KR20200013927A - Hot water supply device and water purifier using the same - Google Patents

Abstract

According to one embodiment of the present invention, a hot water supply device comprises: a hot water storage unit which includes a first heating unit generating lukewarm water by heating raw water flowing from the outside at the first temperature, stores the lukewarm water, and discharges the lukewarm water when a hot water extraction signal is inputted; an instantaneous heating unit which is disposed at the rear end of the hot water storage unit, includes a second heating unit instantaneously heating the lukewarm water discharged from the hot water storage unit into hot water at the second temperature higher than the first temperature when the hot water extraction signal is inputted, and discharges the hot water; and a control unit which selectively supplies current to the first heating unit and the second heating unit within the allowable current of power supplied to the first heating unit and the second heating unit.

Description

Hot water supply device and water purifier using the same {HOT WATER SUPPLY DEVICE AND WATER PURIFIER USING THE SAME}

The present invention relates to a hot water supply device and a water purifier using the same.

In recent years, research on a direct type water purifier that provides hot water using an instant hot water heater has been actively conducted.

The conventional direct type water purifier instantaneously heats raw water supplied using a high capacity heating element within the limit of the allowable current of the power source to generate hot water of 80 ° C or higher. However, in a region where the voltage is relatively low, the extraction flow rate was reduced to generate a low flow rate of hot water in order to generate hot water within the allowable current.

One of the problems to be solved by the present invention is to provide a hot water supply device and a water purifier using the same, even if the hot water is generated within the limit of the allowable current in a region where the voltage is relatively low. .

An embodiment of the present invention includes a first heating unit for generating lukewarm water by heating raw water introduced from the outside to a first temperature, storing the lukewarm water, and storing the lukewarm water when the hot water extraction signal is input. part; A second heating unit disposed at a rear end of the hot water storage unit and configured to instantaneously heat the lukewarm water discharged from the hot water storage unit to high temperature water having a second temperature higher than the first temperature when the hot water extraction signal is input; Instantaneous heating unit for extracting hot water; And a control unit for selectively supplying current to the first heating unit and the second heating unit within an allowable current of the power supplied to the first heating unit and the second heating unit. .

In addition, a first temperature sensor disposed in the hot water storage unit for measuring the temperature of the lukewarm water; And a second temperature sensor disposed at the instantaneous heating unit and measuring the temperature of the hot water.

In addition, the first temperature may be 50 ℃ to 60 ℃, the second temperature may be 80 ℃ to 90 ℃.

The first heating unit may include a sheath heater, and the second heating unit may include a ruthenox heater.

The hot water storage unit may maintain the lukewarm water at the first temperature.

In addition, the power supply may have a voltage of 100V to 120V.

An embodiment of the present invention includes a first heating unit, the hot water storage unit for heating the raw water to the first heating unit when the hot water extraction signal is input to generate lukewarm water of the first temperature and withdraw; A second heating unit disposed at a rear end of the hot water storage unit, the second heating unit configured to instantaneously heat the lukewarm water discharged from the hot water storage unit to high temperature water having a second temperature higher than the first temperature, and to generate the hot water. part; And a control unit for selectively supplying current to the first heating unit and the second heating unit within an allowable current of the power supplied to the first heating unit and the second heating unit. .

One embodiment of the present invention, at least one water filter, including a filtration unit for filtering the supplied raw water; A first heating unit configured to generate lukewarm water by heating raw water introduced from the outside to a first temperature, storing the lukewarm water, and outputting the lukewarm water when a hot water extraction signal is input; A second heating unit disposed at a rear end of the hot water storage unit and configured to instantaneously heat the lukewarm water discharged from the hot water storage unit to high temperature water having a second temperature higher than the first temperature when the hot water extraction signal is input; Instantaneous heating unit for extracting hot water; And a control unit selectively supplying current to the first heating unit and the second heating unit within an allowable current of power supplied to the first heating unit and the second heating unit.

In addition, the hot water storage unit auxiliary tank for storing the lukewarm water; And a first temperature sensor disposed in the auxiliary tank, the first temperature sensor measuring a temperature of the lukewarm water, wherein the first heating part may be disposed in the auxiliary tank.

In addition, the lukewarm water may be 50 ° C to 60 ° C, the high temperature water may be 80 ° C to 90 ° C.

According to an embodiment of the present invention, there is provided a hot water supply device and a water purifier using the same, which can supply hot water with a sufficient flow rate even when used for a power source having a low voltage and allowable current value.

Various and advantageous advantages and effects of the present invention is not limited to the above description, it will be more readily understood in the course of describing specific embodiments of the present invention.

1 is a view showing a water purifier according to an embodiment of the present invention.
2 is a flow chart for explaining the operation of the water purifier according to an embodiment of the present invention.
3 is a view for explaining the relationship between the allowable current and the rated current of the water purifier according to an embodiment of the present invention.

In order to help understand the features of the present invention as described above, it will be described in more detail with respect to the water purifier associated with the embodiment of the present invention.

The embodiments described below will be described based on the embodiments best suited for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the described embodiments. It is to illustrate that the present invention can be implemented as in the embodiments. Accordingly, the present invention may be modified in various ways within the technical scope of the present invention through the embodiments described below, and the modified embodiments fall within the technical scope of the present invention. In addition, in order to help the understanding of the embodiments described below, in the reference numerals described in the accompanying drawings, among the components that will perform the same function in each embodiment, the related components are denoted by the same or extension numbers.

1 to 3, a hot water supply device and a water purifier using the same according to an embodiment of the present invention will be described. 1 is a view showing a water purifier according to an embodiment of the present invention, Figure 2 is a flow chart for explaining the operation of the water purifier according to an embodiment of the present invention, Figure 3 is another water purifier according to an embodiment of the present invention Is a diagram for explaining the relationship between the allowable current and the rated current.

1, the water purifier 100 according to an embodiment of the present invention is a raw water inlet 110, filtration unit 120, hot water storage unit 130, instantaneous heating unit 140 and the controller 150 It may include. Among them, the hot water storage unit 130, the instantaneous heating unit 140 and the controller 150 may constitute a hot water supply device.

The raw water inlet 110 may be connected to an external raw water supply source 200 to supply the raw water supplied from the raw water supply source 200 to the filtration unit 120 to be described later. Here, the raw water supply source 200 is a facility that can supply raw water, such as tap water.

In one embodiment, the raw water inlet 110 may be configured to include an adapter 111, regulator 112 and the water supply valve 113. Stepping valves are employed as the water supply valve 113, it is possible to precisely control the flow rate of the raw water. Here, the adapter 111 corresponds to a part in which a flow path connected to the raw water supply source 200 outside the device is connected to the device.

In addition, the regulator 112 may adjust the water pressure of the raw water flowing from the raw water supply source 200. As an example, the regulator 112 may reduce the incoming raw water to a certain water pressure (for example, 3 kg / cm ² ).

In addition, the water supply valve 113 is provided at the rear end of the regulator 112 is configured to open and close the flow path. In one embodiment, the water supply valve 113 is linked to the extraction unit 170 to be described later, it can be opened and closed in accordance with the water extraction and singular operation of the extraction unit 170. In other words, when the user wants hot water supply in the water purifier 100 according to an embodiment of the present invention to operate the extractor 170, the water supply valve 113 may be opened at the same time, and the extractor 170 may be singular. In the state, the water supply valve 113 may be closed.

This indicates that the water purifier 100 according to an embodiment of the present invention employs a direct water method.

The filter unit 120 may include at least one purified water filter and may be connected to the rear end of the raw water inlet unit 110 to filter the raw water supplied from the raw water inlet unit 110 to generate purified water. In one embodiment, the filtration unit 120 may include a pretreatment filter 121, a main filter 122, and a post-treatment filter 123.

The main filter 122 may be a reverse osmosis filter, and the main filter 122 may be connected to a living water line (not shown) for draining the living water that is not filtered by the main filter 122 to the outside. However, the filtration unit 120 may include only the main filter 122, and in addition to the main filter 122, may include only any one of the pretreatment filter 121 and the post-treatment filter 123. As long as the water filter can be filtered, other than the 122, the pretreatment filter 121, and the post-treatment filter 123, any known structure may be used.

The hot water storage unit 130 may include a water supply valve 131, 135, an auxiliary tank 132, a first temperature sensor 133, and a first heating unit 134. The hot water storage unit 130 may generate lukewarm water by temporarily heating the purified water at room temperature introduced from the filtration unit 120 and temporarily store the lukewarm water into the instantaneous heating unit 140 when a hot water extraction signal is input. can do. In addition, the hot water storage unit 130 may maintain the temperature of the generated lukewarm water.

The water supply valves 131 and 135 are provided at the front and rear ends of the auxiliary tank 132, respectively, and are purified by the filtration unit 120 and flow in the purified water flowing into the auxiliary tank 132 and instantaneous heating in the auxiliary tank 132. The flow rate of lukewarm water discharged to the unit 140 may be controlled respectively.

The first heating unit 134 may be disposed in the auxiliary tank 132 to heat purified water at room temperature with lukewarm water. The first heating unit 134 may generate lukewarm water of 50 ° C to 60 ° C by heating the purified water introduced into the auxiliary tank 132. The first heating unit 134 may be configured as a sheath heater.

The first temperature sensor 133 may be disposed in the auxiliary tank 132 to periodically measure the temperature of purified or lukewarm water in the auxiliary tank 132, and transmit the measured value to the controller 150.

The instantaneous heating unit 140 may be provided at the rear end of the hot water storage unit 130 to generate hot water by receiving lukewarm water discharged from the hot water storage unit 130 and heating it. The instantaneous heating unit 140 includes a second heating unit 141 as the instantaneous heating means capable of instantaneously heating the supplied lukewarm water to a high temperature.

In one embodiment, the second heating unit 141 may be configured as a Ruthenox heater, and such a Luthenox heater may include a plurality of heating plates. Here, the heating plate included in the Luthenox heater may be configured to heat the supplied water instantaneously, and the plurality of heating plates may be configured to independently perform heating operations. For example, when the Luthenox heater is composed of two heating plates, one heating plate of the two heating plates may be configured to 1400W and the other heating plate is 1000W. Here, the 1400W heating plate and the 1000W heating plate may be operated independently. Through this, the second heating unit 141 may adjust the degree of heating the lukewarm water supplied.

In addition, in one embodiment, the instantaneous heating unit 140 may include a water supply valve 142 and the second temperature sensor 143. The water supply valve 142 may be disposed at the rear end of the second heating unit 141 to adjust the flow rate of the hot water discharged from the instantaneous heating unit 140.

In addition, the second temperature sensor 143 may be provided on the flow path at the rear end of the second heating unit 141 to measure the temperature of the hot water heated by the second heating unit 141 and discharged.

The instantaneous heating unit 140 generally has an inverse relationship between the flow rate of hot water that can be supplied and the temperature of the generated hot water. That is, increasing the temperature of hot water decreases the flow rate of hot water that can be supplied, and lowering the temperature of hot water can increase the flow rate of hot water that can be supplied.

In an exemplary embodiment, by configuring the lukewarm water to be supplied to the instantaneous heating unit 140, the hot water is supplied from the instantaneous heating unit 140, while maintaining the flow rate of the supplied hot water. Therefore, when the hot water is supplied, the flow rate of the hot water is increased as compared with the conventional case in which the flow rate is to be reduced.

This effect is due to the hot water storage unit 130 employed in the water purifier 100 of the embodiment, the hot water storage unit 130 is the amount of heat that needs to be heated in the instantaneous heating unit 140 to supply hot water of 80 ℃ or more. In this case, even when a relatively low voltage is applied to the water purifier 100, the hot water in which the flow rate of the hot water extracted from the water purifier 100 is not reduced can be supplied.

This will be described in detail. The direct type water purifier includes an instantaneous heating unit for instantaneous heating of raw water supplied from the raw water inlet. In regions where voltages of 100V to 120V are used, when hot water is instantaneously heated using only a current within a range that does not deviate from the allowable current (for example, 15A) due to low voltage, high temperature is extracted to generate hot water of 80 ° C or higher. The water flow had to be reduced. For example, if the power source is a voltage of 100V and an allowable current of 15A, the hot water should be generated using a heater capacity of less than 1400W in consideration of the power required by the electronic device except the heater. When the temperature of the purified water flowing into the instantaneous heating part is 20 ° C, the instantaneous heating part needs to heat 60 ° C further, so that hot water can be supplied at a 0.33L / m flow rate with a heater capacity of 1400W.

When storing lukewarm water of 50 ° C. in the hot water storage unit and supplying it to the instantaneous heating unit, the instantaneous heating unit needs to heat 30 ° C. further, so that the high temperature is 0.67 L / m at about twice the temperature of the hot water storage unit. Water can be supplied. Accordingly, it is possible to provide hot water at a flow rate doubling as compared to the case where there is no hot water storage unit without departing from the allowable current under the same low voltage.

Meanwhile, the controller 150 turns on / off the first heating unit 134 and the second heating unit 141 to heat the first heating unit 134 and the second heating unit in the power supply 300. The currents supplied to the units 141 may be controlled. In addition, the controller 150 turns on / off the first heating unit 134 and the second heating unit 141 based on the temperature values measured by the first temperature sensor 133 and the second temperature sensor 143. By doing so, the temperature of the water stored in the hot water storage unit 130 and the instantaneous heating unit 140 can be adjusted. The power supply 300 may be an AC power supply having a voltage of 100V to 120V, and may be supplied as a current amount within an allowable current. In one embodiment, the allowable current may be 15A. However, the voltage of the power supply 300 is not limited to 100V to 120V, and a voltage of 250V or less may be supplied.

Referring to FIG. 3, the relationship between the allowable current of the water purifier 100 and the rated current of the first and second heating units 134 and 141 will be described.

The currents I1 and I2 may be applied to the hot water storage unit 130 and the instantaneous heating unit 140 within the allowable current IL that can be supplied from the power source 300, respectively. The currents I1 and I2 supplied to the hot water storage unit 130 and the instantaneous heating unit 140 are respectively limited so as not to be applied at the same time. This is because when the currents I1 and I2 are simultaneously supplied to the hot water storage unit 130 and the instantaneous heating unit 140, the allowable current IL that can be supplied from the power source 300 may be released.

As shown in FIG. 3, the hot water storage unit 130 may be supplied with a current of I1 for a time t1, and the instantaneous heating unit 140 may be supplied with a current of I2 for t3. I1 and I2 are currents below the allowable current IL, respectively, and t1 and t2 may be supplied at intervals of t3 so that currents are not simultaneously supplied to the hot water storage unit 130 and the instantaneous heating unit 140. Can be. However, in some embodiments, t3 may be a time near zero in a range where t1 and t2 do not overlap.

On the other hand, the extraction unit 170 is connected to the filter unit 120 and the hot water storage unit 130, the generated purified water and hot water may be extracted by the user's operation. The purified water generated by the filter unit 120 may be directly supplied to the extraction unit 170 through the water supply valve 160. In addition, the cold water generating unit (not shown) is connected to the extraction unit 170, it is also possible to extract the cold water by the user's operation. The extraction unit 170 is not limited to a particular configuration, and in one embodiment, in order to miniaturize the device, purified water, hot water and cold water may be extracted through one outlet, and an electronic faucet composed of a button ( Or coke).

Referring to Fig. 2, the operation of the water purifier 100 of one embodiment will be described.

First, the controller 150 may check whether the water purifier 100 enters the normal heating mode, and accordingly, may control the method of controlling the water purifier 100 (S100). If the water purifier 100 is in the constant heating mode, the controller 150 stores the lukewarm water in the hot water storage unit 130 even if there is no hot water extraction signal. When the hot water extraction signal is input, the warm water storage unit 130 generates lukewarm water. Therefore, in the normal heating mode, as soon as the hot water extraction signal is input, the lukewarm water of the hot water storage unit 130 is additionally heated in the instantaneous heating unit 140 to be discharged as high temperature water, so that the user can use the hot water immediately. However, since lukewarm water must be stored in the hot water storage unit 130 in advance, power consumption may increase somewhat. On the other hand, in the non-heating mode, since the hot water extraction unit generates lukewarm water from the hot water storage unit 130 from the time point is input, and reheats it in the instantaneous heating unit 140, hot water compared to the normal heating mode The time taken to extract is increased, but since it is not necessary to store lukewarm water in advance, power consumption can be reduced.

In the normal heating mode, first, the control unit 150 generates lukewarm water by first heating the purified water supplied to the auxiliary tank 132 with the first heating unit 134 (S100). The controller 150 maintains the temperature of the lukewarm water in the auxiliary tank 132 with reference to the temperature measured by the first temperature sensor 133 (S300).

Next, when the hot water extraction signal is input, the controller 150 determines whether the hot water extraction signal is to request the extraction of hot water (S500). When there is a request for high temperature water, the controller 150 extracts lukewarm water from the auxiliary tank 132 (S600), and instantaneously heats the extracted lukewarm water from the instantaneous heating unit 140 to the second heating unit 141. After generating hot water (S700), it is discharged (S800).

When the hot water extraction signal is input, but the hot water is not requested, the control unit 150 withdraws the lukewarm water of the auxiliary tank 132 (S510), and immediately discharges it without reheating (S800).

If the heating mode is not always, first, the controller 150 suspends the generation of lukewarm water in the hot water storage unit 130 until a hot water extraction signal is input (S110). When the hot water extraction signal is input, the controller 150 determines whether the hot water extraction signal requests the extraction of hot water (S120). When there is a request for hot water, the controller 150 heats the purified water of the auxiliary tank 132 to generate lukewarm water and outputs it to the instantaneous heating unit 140 (S130), and the extracted lukewarm water is instantaneous heating unit 140. After instantaneous heating to the second heating unit 141 to generate a high temperature water (S140), it is discharged (S800).

When the hot water extraction signal is input, but the hot water is not requested, the controller 150 exits the instantaneous heating unit 140 without heating the purified water of the auxiliary tank 132, and the instantaneous heating unit 140 removes the hot water. After heating the purified water to the heating unit 141 to generate lukewarm water (S121), it is discharged (S800). However, according to the embodiment, the control unit 150 generates lukewarm water by heating the purified water of the auxiliary tank 132, and exits the instantaneous heating unit 140, lukewarm water in a state that is not heated in the instantaneous heating unit 140 It can also be configured to discharge.

The water purifier described above may not be limitedly applied to the configuration of the above-described embodiment, but the embodiments may be configured by selectively combining all or some of the embodiments so that various modifications can be made.

100: water purifier 110: raw water inlet
111: adapter 112: regulator
113: water supply valve 120: filtration unit
121: pretreatment filter 122: main filter
123: post-processing filter 130: hot water storage unit
131: water supply valve 132: auxiliary tank
133: first temperature sensor 134: first heating portion
135: water supply valve 140: instantaneous heating
141: second heating portion 142: water supply valve
143: second temperature sensor 150: control unit
170: extraction unit 160: water supply valve
200: raw water supply source 300: power

Claims (10)

A first heating unit configured to generate lukewarm water by heating raw water introduced from the outside to a first temperature, storing the lukewarm water, and outputting the lukewarm water when a hot water extraction signal is input;
A second heating unit disposed at a rear end of the hot water storage unit and configured to instantaneously heat the lukewarm water discharged from the hot water storage unit to high temperature water having a second temperature higher than the first temperature when the hot water extraction signal is input; Instantaneous heating unit for extracting hot water; And
And a control unit selectively supplying current to the first heating unit and the second heating unit within an allowable current of the power supplied to the first heating unit and the second heating unit.
The method of claim 1,
A first temperature sensor disposed in the hot water storage unit to measure a temperature of the lukewarm water; And
And a second temperature sensor disposed at the instantaneous heating unit and measuring a temperature of the hot water.
The method of claim 1,
The first temperature is 50 ℃ to 60 ℃,
The second temperature is hot water supply apparatus, characterized in that 80 ℃ to 90 ℃.
The method of claim 1,
The first heating unit includes a sheath heater (Sheath Heater),
The second heating unit is a hot water supply device characterized in that it comprises a Rutenox Heater (Ruthenox Heater).
The method of claim 1,
The hot water storage unit is characterized in that for maintaining the lukewarm water at the first temperature.
The method of claim 1,
The power supply is hot water supply, characterized in that having a voltage of 100V to 120V.
A hot water storage unit including a first heating unit and heating the raw water to the first heating unit to generate lukewarm water having a first temperature when the hot water extraction signal is input;
A second heating unit disposed at a rear end of the hot water storage unit, the second heating unit configured to instantaneously heat the lukewarm water discharged from the hot water storage unit to high temperature water having a second temperature higher than the first temperature, and to heat the hot water. part; And
And a control unit selectively supplying current to the first heating unit and the second heating unit within an allowable current of the power supplied to the first heating unit and the second heating unit.
A filtration unit including at least one water purification filter and filtering the supplied raw water;
A first heating unit configured to generate lukewarm water by heating raw water introduced from the outside to a first temperature, storing the lukewarm water, and outputting the lukewarm water when a hot water extraction signal is input;
A second heating unit disposed at a rear end of the hot water storage unit and configured to instantaneously heat the lukewarm water discharged from the hot water storage unit to high temperature water having a second temperature higher than the first temperature when the hot water extraction signal is input; Instantaneous heating unit for extracting hot water; And
And a control unit for selectively supplying current to the first heating unit and the second heating unit within an allowable current of the power supplied to the first heating unit and the second heating unit.
The method of claim 8
The hot water storage unit auxiliary tank for storing the lukewarm water; And
It is disposed in the auxiliary tank, and further comprises a first temperature sensor for measuring the temperature of the lukewarm water,
And the first heating unit is disposed in the auxiliary tank.
The method of claim 8,
The lukewarm water is 50 ℃ to 60 ℃,
The hot water is a water purifier, characterized in that 80 ℃ to 90 ℃.

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