KR20230086360A - Apparatus for hot water provision - Google Patents

Abstract

The present invention relates to a hot water supply device. Specifically, the hot water supply device comprises: a heating device that heats purified water to provide hot water and includes an inlet through which the purified water flows in and an outlet through which the hot water is discharged; a water outlet part that discharges the purified water and the hot water to the outside; a passage part that provides a passage for the purified water and the hot water to flow; and a valve part that is selectively opened and closed to control the flow of the purified water and the hot water within the passage part. The passage part comprises: a hot water discharge passage providing a passage for the hot water provided from the heating device to flow to the water outlet part; and a drain passage capable of discharging the hot water discharged from the heating device to the outside through the inlet. Accordingly, it is possible to efficiently remove the scale attached to the inside of the hot water supply device and the scale dissolved or mixed in the water stagnant inside the hot water supply device.

Description

Hot water providing device {APPARATUS FOR HOT WATER PROVISION}

The present invention relates to a hot water providing device.

The hot water providing device may generate high-temperature water by heating the introduced water. For example, the hot water supply device includes a gas water heater that heats water using gas, and an electric water heater that heats water using electricity. A product provided with such a water heater is, for example, a water purifier.

In general, a water purifier is a device that receives water from a water supply source such as a tap water, filters it into purified water, and provides purified water to a user. Such purified water may be immediately provided to the user, but may be provided as cold water after being cooled to a certain temperature or less, or as hot water heated to a certain temperature or more. In addition, the water purifier includes a plurality of passages through which purified water, cold water, and hot water respectively flow in order to provide purified water, cold water, and hot water to the user.

Meanwhile, recently, development of a water purifier capable of instantaneously heating water using a heater to generate high-temperature water has been actively progressed. Such a water purifier can instantaneously heat introduced purified water and maintain the temperature of the heated water.

In this regard, Korean Patent Laid-Open Publication No. 10-2020-0013927 of the present applicant "Hot water supply device and water purifier using the same" (Patent Document 1) discloses a water purifier that heats water so that the temperature of water becomes high temperature water at a predetermined temperature or higher. However, when the water purifier of Patent Document 1 is used for a certain period of time or longer, there is a problem in that scale, on which heavy metals or foreign substances contained in water are adhered, is formed inside the water purifier. The scale formed inside the water purifier not only adheres to the inside of the water purifier, but also dissolves or mixes with stagnant water inside the water purifier. Factors in which scale is formed include scale-inducing substances (Ca, Na, HCO _{3 ,} SO ₄ ), pH, water temperature, and the like. In particular, water temperature is a major factor in scale formation. For example, when the temperature of water rises from room temperature (eg, 25° C.) to a relatively higher temperature (eg, 80° C.) than room temperature, the possibility of scale generation rapidly increases. On the other hand, Patent Document 1 does not disclose a means for removing scale formed inside the water purifier due to high-temperature water stagnant inside the water purifier. The water purifier of Patent Document 1 has a problem in that it cannot remove not only the scale attached to the inside of the water purifier, but also the scale dissolved or mixed with water stagnant inside the water purifier.

Therefore, there is an increasing need for a hot water providing device equipped with a means capable of efficiently removing the scale attached to the inside of the hot water providing device and the scale melted or mixed with stagnant water inside the hot water providing device.

Korean Patent Publication No. 10-2020-0013927 (2020. 02. 10 application published)

An embodiment of the present invention was invented in view of the above background, and provides hot water capable of efficiently removing the scale attached to the inside of the hot water supply device and the scale melted or mixed with stagnant water inside the hot water supply device. We want to provide you with a device.

According to one aspect of the present invention, a heating device which heats purified water to provide hot water, and includes an inlet through which the purified water flows in and an outlet through which the hot water is discharged; a water outlet for dispensing the purified water and the hot water to the outside; a flow path part providing a passage through which the purified water and the hot water flow; and a valve part that is selectively opened and closed to control the flow of the purified water and the hot water in the flow path part, wherein the flow path part is a hot water outlet flow passage providing a passage through which the hot water supplied from the heating device flows to the water outlet part. ; and a drain passage through which the hot water discharged from the heating device is discharged to the outside through the inlet.

In addition, the hot water discharged through the discharge port is discharged to the outside through the water outlet and the hot water discharged through the inlet is placed in any one of the drain mode discharged to the outside through the drain passage. An apparatus for providing hot water may be provided, further comprising a control device for controlling the opening and closing of the valve part.

The flow path part further includes a purified water outlet flow path providing a passage for the purified water to flow into the hot water outlet flow channel, and the control device is configured to: and a device for providing hot water that controls the valve unit to sequentially flow through the drain passage and discharge the water to the outside.

In addition, the control device performs the drain mode when a predetermined time elapses from the point in time when the hot water dispensing mode ends, and while the drain mode is performed, the hot water is heated while the operation of the heating device is stopped. A hot water providing device may be provided that controls the heating device and the valve unit to be discharged from the device.

The controller may further include a sensor capable of measuring at least one of a temperature of the heating device and a temperature of hot water in the heating device, and the control device may perform the drain mode when the temperature measured by the sensor is equal to or less than a preset threshold temperature. It may be provided with a hot water providing device that controls the valve unit to stop.

In addition, the flow path unit may include a purified water outlet flow path providing a passage through which the purified water flows to the water outlet unit; and an intermediate flow passage connecting the purified water outlet flow passage and the hot water outlet flow passage, wherein the valve unit includes a first valve module that is selectively opened and closed to control the flow of the purified water in the purified water outlet flow passage and the intermediate flow passage. Including, hot water providing device may be provided.

In addition, the flow passage part further includes a purified water inlet flow passage providing a passage through which the purified water flows to the heating device, and the valve part has a second gate that is selectively opened and closed to control the flow of the purified water in the purified water inlet passage. The hot water providing device may further include a valve module, wherein the first valve module is configured to allow a higher flow rate than the second valve module.

In addition, the valve unit includes a third valve module that is selectively opened and closed to control the flow of the hot water in the hot water outlet flow path, and the third valve module is connected to the hot water outlet flow path between the intermediate flow path and the outlet. Disposed, a hot water providing device may be provided.

In addition, the hot water providing device may be provided in which the inlet is formed below the heating device and the outlet is disposed above the inlet.

The hot water providing device according to an embodiment of the present invention has an effect of efficiently removing the scale attached to the inside of the hot water providing device and the scale melted or mixed with stagnant water inside the hot water providing device.

1 is a conceptual diagram schematically illustrating an apparatus for providing hot water according to an embodiment of the present invention.
2 is a block diagram showing a hot water providing device according to an embodiment of the present invention.
3 is a conceptual diagram schematically illustrating the flow of water when the hot water providing device according to an embodiment of the present invention is in a hot water dispensing mode.
4 is a conceptual diagram schematically illustrating a flow of water when the hot water providing device according to an embodiment of the present invention is in a drain mode.

Hereinafter, specific embodiments for implementing the technical idea of the present invention will be described in detail with reference to the drawings.

In addition, in the description of the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

In addition, when a component is referred to as being 'connected', 'flowed', 'output', 'discharged', or 'heated' to another component, it is directly connected to, flowed, discharged, discharged, or heated to the other component. It may be possible, but it should be understood that other components may exist in the middle.

Terms used in this specification are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by these terms. These terms are only used to distinguish one component from another.

As used herein, the meaning of "comprising" specifies specific characteristics, regions, integers, steps, operations, elements, and/or components, and other specific characteristics, regions, integers, steps, operations, elements, elements, and/or groups. does not exclude the presence or addition of

In addition, in this specification, expressions such as upper, lower, and upper surfaces are described based on the drawings, and it is made clear in advance that they may be differently expressed when the direction of the object is changed.

Hereinafter, a specific configuration of the hot water providing device 1 according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIGS. 1 and 2 , the hot water providing device 1 according to an embodiment of the present invention can provide clean water to users by filtering water supplied from the outside. For example, the hot water providing device 1 may receive water from a water supply source (not shown) such as tap water, and may filter the supplied water as clean water. The hot water providing device 1 may be a gas water heater that heats water using gas, an electric water heater that heats water using electricity, and a water purifier. However, the hot water providing device 1 is not limited to a water purifier, and may be provided with any device requiring instant hot water such as an espresso machine.

The hot water providing device 1 includes a frame (not shown), a filter unit 100, a heating device 200, a water outlet unit 300, a flow path unit 400, a valve unit 500, a sensor 600, and a control unit. Device 700 may be included.

Meanwhile, water introduced into the hot water supply device 1 from the outside may be classified into raw water, purified water, and hot water. Hereinafter, among the water introduced into the hot water providing device 1 from the outside, water that has not passed through the filter unit 100 is defined as raw water, and water that has been filtered through the filter unit 100 is defined as purified water. In addition, among the water filtered by the filter unit 100, water heated to a predetermined temperature or higher in the heating device 200 is defined as hot water.

The frame may provide a space in which the filter unit 100, the heating device 200, the water outlet unit 300, the flow path unit 400, the valve unit 500, the sensor 600, and the controller 700 are accommodated. there is. The filter unit 100 may filter the raw water introduced into the hot water providing device 1 into purified water. Raw water passing through a raw water intake passage 410 to be described later may flow into the filter unit 100, and purified water filtered by the filter unit 100 may flow into the purified water intake passage 420. In addition, one or more filter units 100 may be provided, and may be provided to the frame to be replaceable. For example, one or more filter units 100 may be disposed on the rear side of the hot water providing device 1 .

The heating device 200 may provide hot water by heating purified water. This heating device 200 may include a hot water receptor 210 and a heater 220. The hot water receiver 210 may provide a space for receiving purified water introduced from the purified water intake passage 420 .

The hot water receptor 210 may be, for example, a water storage tank in which incoming purified water is gradually filled. However, the spirit of the present invention is not necessarily limited thereto, and the hot water receptor 210 may be configured as a direct water type providing a path for purified water to flow. For example, the hot water receptor 210 may be provided with a plurality of barrier ribs arranged to be offset from each other to provide a flow path through which purified water flows while being heated by the heater 220 . While flowing along the passage provided by the hot water receptor 210, the flow direction of purified water may be changed multiple times by a plurality of partition walls. As another example, the hot water receptor 210 may have a pipe shape in which water pre-entered into the hot water receptor 210 may be discharged.

The warm water receptor 210 may include an inlet 211 and an outlet 212 .

Purified water may flow into the inlet 211 . This inlet 211 may communicate with the purified water intake passage 420 . This inlet 211 may be disposed lower than the raw import water passage 410 .

Hot water may be discharged from the outlet 212 . The outlet 212 may communicate with the inlet 211 and the hot water outlet 440 to be described later. Also, the outlet 212 may be disposed above the inlet 211 .

The heater 220 may heat purified water accommodated in the hot water container 210 . The heater 220 may include, for example, at least one of a sheath heater and a surface heating heater having a plurality of heating plates. In addition, the sheath heater and the surface heating heater may independently heat purified water accommodated in the hot water receptor 210 . This heater 220 may be disposed inside the hot water container 210 .

The water outlet 300 may discharge one or more of purified water and hot water to the outside. For example, the water outlet unit 300 may discharge purified water supplied from the purified water outlet passage 430 to be described later to the outside. In addition, the water outlet unit 300 may discharge hot water supplied from the hot water outlet flow path 440 to be described later to the outside.

The flow path part 400 may provide a passage through which purified water and hot water flow. The flow path part 400 may communicate with the filter part 100 , the heating device 200 and the water outlet part 300 . The flow path unit 400 includes a raw water intake flow path 410, a purified water intake flow path 420, a purified water output flow path 430, a hot water output flow path 440, a drain flow path 450, and an intermediate flow path 460. can include

The raw water intake passage 410 may provide a passage through which raw water introduced from the outside flows. The raw water flowing into the raw water intake passage 410 may be connected to the filter unit 100 . The purified water intake passage 420 may provide a passage through which purified water flows to the heating device 200 . In addition, purified water filtered by the filter unit 100 may be introduced into the purified water intake passage 420 and may be guided to the heating device 200 . The purified water intake passage 420 may communicate with the inlet 211 of the hot water receptor 210 .

The purified water outlet passage 430 may provide a passage through which purified water flows. Purified water filtered by the filter unit 100 may flow into the purified water outlet channel 430 and guide the filtered purified water to the water outlet unit 300 .

The hot water outlet passage 440 may provide a passage through which hot water supplied from the heating device 200 flows to the water outlet 300 . Clean water heated by the heating device 200 may be introduced into the hot water outlet channel 440 and may guide the introduced hot water to one or more of the water outlet 300 and the drain channel 450 . The hot water outlet passage 440 may communicate with the outlet 212 of the hot water receptor 210 .

The drain passage 450 may provide a passage through which hot water is discharged to the outside. For example, the drain passage 450 may discharge hot water discharged from the heating device 200 to the outside through the inlet 211 . As such, since hot water can be drained through the inlet 211 without a separate drain port for draining the hot water discharged from the heating device 200, the structure of the hot water providing device 1 is simplified. The drain passage 450 may be disposed below the inlet 211 .

The middle passage 460 may provide a passage through which purified water flows from the purified water outlet passage 430 to the hot water outlet passage 440 . The middle passage 460 may connect the purified water outlet passage 430 and the hot water outlet passage 440 . The middle passage 460 may extend between the purified water outlet passage 430 and the hot water outlet passage 440 . For example, one end of the middle flow passage 460 may be branched from the purified water outlet flow passage 430 , and the other end of the middle flow passage 460 may be branched from the hot water outlet flow passage 440 .

The valve unit 500 may be selectively opened and closed to control the flow of one or more of purified water and hot water in the flow path unit 400 . The valve unit 500 includes a first valve module 510, a second valve module 520, a third valve module 530, a fourth valve module 540, a fifth valve module 550 and a sixth valve. module 560.

The first valve module 510 may be selectively opened and closed to control the flow of purified water in the purified water outlet channel 430 and the intermediate channel 460 . For example, the first valve module 510 may be placed in a back-flushing state to guide the flow of purified water in the purified water outlet channel 430 to the intermediate channel 460 and block the flow to the water outlet 300. . When the first valve module 510 is in a back-flushing state, the purified water outlet passage 430 may communicate with the intermediate passage 460 .

In addition, the first valve module 510 may be placed in a purified water outlet state of guiding the flow of purified water in the purified water outlet channel 430 to the water outlet 300 and blocking the flow to the intermediate channel 460 . When the first valve module 510 is in the purified water outlet state, the purified water outlet channel 430 may communicate with the water outlet 300 .

The first valve module 510 may be configured to allow the flow of purified water at a higher flow rate than the second valve module 520 . For example, the flow rate of purified water flowing through the intermediate flow passage 460 when the first valve module 510 is in the back-flushing state is the rate of the hot water receptor 210 when the second valve module 520 is opened. It may be greater than the flow rate of purified water flowing into the inlet 211 . In other words, flow resistance of the first valve module 510 may be smaller than flow resistance of the second valve module 520 .

The second valve module 520 may be selectively opened and closed to control the flow of purified water in the purified water inlet and water passage 420 . For example, the second valve module 520 may adjust the flow rate of purified water flowing into the heating device 200 . The second valve module 520 may be, for example, a flow control valve. The second valve module 520 may be disposed in the purified water intake passage 420 between the fifth valve module 550 and the inlet 211 . For example, the second valve module 520 may be disposed above the inlet 211 . This second valve module 520 may be named, for example, a 'purified water inlet valve module'.

The third valve module 530 may be selectively opened and closed to control the flow of hot water in the hot water outlet channel 440 . For example, when the third valve module 530 is opened, the hot water outlet passage 440 may communicate with the intermediate passage 460 . The third valve module 530 may be disposed in the hot water outlet channel 440 between the intermediate channel 460 and the outlet 212 . The third valve module 530 may be disposed above the outlet 212 . Also, the third valve module 530 may be disposed lower than the first valve module 510 .

The fourth valve module 540 may be selectively opened and closed to control the flow of hot water that has passed through the third valve module 530 among hot water in the hot water outlet passage 440 . For example, when the fourth valve module 540 is opened, the hot water outlet passage 440 may communicate with the water outlet 300 . Also, the fourth valve module 540 may be selectively opened and closed to control the flow of purified water in the intermediate flow path 460 . For example, when the fourth valve module 540 is closed, the flow of purified water in the middle passage 460 to the water outlet 300 may be blocked. The fourth valve module 540 may be disposed in the hot water outlet channel 440 between the middle channel 460 and the water outlet 300 . Also, the fourth valve module 540 may be disposed lower than the first valve module 510 . Also, the fourth valve module 540 may be disposed above the water outlet 300 .

The fifth valve module 550 may be selectively opened and closed so as to guide the flow of purified water to one of the purified water intake flow path 420 and the purified water output flow path 430 and block the flow of purified water to the other one. For example, the fifth valve module 550 guides the purified water filtered by the filter unit 100 to the purified water intake flow path 420 and blocks the flow to the purified water output flow path 430. can When the fifth valve module 550 is placed in the purified water intake state, the raw water intake flow path 410, the purified water intake flow path 420, the inlet 211, the discharge port 212, and the hot water output flow path 440 are can communicate with each other.

In addition, the fifth valve module 550 guides the purified water filtered by the filter unit 100 to the purified water outlet channel 430 and blocks the flow to the purified water inlet channel 420, so that the purified water can be placed in an allowable state. . When the fifth valve module 550 is placed in a purified water outlet permitting state, the raw water intake flow path 410, the purified water output flow path 430, the inlet 211, the discharge port 212, and the hot water output flow path 440 can communicate with each other.

The sixth valve module 560 may be selectively opened and closed to control the flow of hot water in the drain passage 450 . For example, the sixth valve module 560 may adjust the flow rate of hot water discharged from the inlet 211 . The sixth valve module 560 may be, for example, a flow control valve. The sixth valve module 560 may be disposed below the inlet 211 . This sixth valve module 560 may be named, for example, a 'drain valve module'.

The sensor 600 may be a temperature sensor capable of measuring one or more of the temperature of the heater 220 and the temperature of hot water in the hot water receptor 210 .

Further referring to FIGS. 3 and 4 , the controller 700 may control at least one of the heater 220 and the valve unit 500 based on the temperature measured by the sensor 600 . The controller 700 may control opening and closing of the valve unit 500 to perform one of the hot water dispensing mode and the drain mode. The hot water outlet mode may be a mode in which hot water discharged from the heating device 200 is discharged to the outside through the water outlet 300 . For example, when the hot water dispensing mode is performed, the control device 700 sets the fifth valve module 550 to allow purified water intake, opens the second valve module 520, and opens the third valve module ( 530) may be opened, and the valve unit 500 may be controlled so that the fourth valve module 540 is opened. In addition, when the hot water outlet mode is performed, purified water is discharged to the outside by sequentially flowing through the purified water intake flow path 420, the inlet 211, the discharge port 212, the hot water output flow path 440, and the water outlet 300. It can be.

Also, the drain mode may be a mode in which hot water discharged from the hot water container 210 is discharged to the outside through the drain passage 450 without passing through the water outlet 300 . For example, when the drain mode is performed, the control device 700 places the fifth valve module 550 in the purified water dispensing state, the first valve module 510 in the back flushing state, and the third valve module 550 in the back flushing state. The valve unit 500 may be controlled so that the valve module 530 is opened, the fourth valve module 540 is closed, and the sixth valve module 560 is opened. In addition, when the drain mode is performed, purified water flows through the purified water outlet flow path 430, the intermediate flow path 460, the hot water outlet flow path 440, and the outlet 212. It may be discharged to the outside by sequentially flowing through the inlet 211 and the drain passage 450 .

The controller 700 may control the heater 220 and the valve unit 500 so that hot water is discharged from the hot water container 210 while the operation of the heater 220 is stopped while the drain mode is performed. In addition, the control device 700 may perform the drain mode when a predetermined time elapses from the time when the temperature extraction mode ends. In other words, whenever the user uses hot water, the drain mode may be performed after the user uses hot water.

The controller 700 may control the valve unit 500 so that the drain mode is stopped when the temperature measured by the sensor 600 is less than or equal to a predetermined critical temperature. For example, the controller 700 compares the temperature measured by the sensor 600 with the threshold temperature at each preset check time, stops the drain mode when the measured temperature is less than the threshold temperature, and the measured temperature is the threshold temperature. If it exceeds, the drain mode can be continued until the measured temperature is below the critical temperature. The critical temperature may be, for example, any one of 25 °C to 40 °C, and the check time may be, for example, 2 seconds to 5 seconds.

In addition, the controller 700 may control the second valve module 520 so that purified water having a greater flow rate flows through the hot water receptor 210 in the drain mode than in the hot water outlet mode. For example, the controller 700 may fully open the second valve module 520 so that purified water flows through the hot water receptor 210 at a maximum flow rate in the drain mode.

In addition, when the control device 700 is not in the hot water dispensing mode, it may perform the drain mode every predetermined drain period. The control device 700 may perform the drain mode for a preset execution time for each drain period.

The controller 700 may calculate the drain cycle based on total dissolved solids (TDS), which is solids dissolved in raw water. For example, the control device 700 is configured once/day when the TDS is greater than 500 ppm, once/2 days when the TDS is greater than 300 ppm and less than 500 ppm, once/3 days when the TDS is greater than 100 ppm and less than 300 ppm, and TDS When it is 100ppm or less, the drain cycle can be calculated once/week.

Also, the control device 700 may calculate the drain cycle based on the amount of hot water used. For example, when calculating the drain cycle as 1 time/10L based on the amount of hot water used, the controller 700 may perform the drain mode during the morning of the next day after 7L or more of hot water is used.

However, the basis for calculating the drain cycle is not limited to TDS and hot water usage, and the drain cycle may be calculated based on one or more of raw water hardness and hot water temperature. Furthermore, the control device 700 may calculate the drain cycle based on a value obtained by combining the TDS, the amount of hot water used, the hardness of the raw water, and the temperature of the hot water. For example, the control device 700 may perform the drain mode for a preset time period at each preset drain cycle regardless of whether hot water is discharged to the outside. Such a drain cycle may be, for example, 1 time/day to 1 time/week (TDS cycle) or 1 time/2L to 1 time/10L (usage cycle), and the control device 700 determines the TDS cycle and usage amount. The drain mode may be performed based on the period that comes first among the periods.

For example, when the TDS cycle is once/day, the usage cycle is once/2L, and the hot water usage is 2L for 2 hours, the drain mode may be performed based on the usage period. As another example, when the TDS cycle is 1 time/day, the usage cycle is 1 time/2L, and the hot water usage for 1 day is 1L, the drain mode may be performed based on the TDS cycle. The execution time of the drain mode may be, for example, 1 minute to 3 minutes.

However, the concept of the present invention is not necessarily limited thereto, and the control device 700 may control the valve unit 500 to be placed in the purified water extraction mode. The purified water extraction mode may be a mode in which purified water passing through the filter unit 100 is discharged to the outside through the purified water extraction water passage 430 and the water extraction unit 300 sequentially. For example, when the purified water extraction mode is performed, the control device 700 sets the fifth valve module 550 to allow purified water and the first valve module 510 to be placed in the purified water extraction state. (500) can be controlled.

Such a control device 700 may be implemented by an arithmetic device including a microprocessor, and since the implementation method is obvious to those skilled in the art, further detailed description thereof will be omitted.

Hereinafter, operations and effects of the hot water providing device 1 according to an embodiment of the present invention will be described.

The hot water providing device 1 may filter raw water supplied from the outside into purified water through the filter unit 100 . The purified water may flow into the inlet 211 of the hot water container 210 and be heated, and the heated hot water may be discharged through the outlet 212 of the hot water container 210 . In addition, such hot water may be stagnant in the hot water receptor 210 . Due to this stagnation of hot water, scale may be formed around the heating device 200 and the heating device 200, and the formed scale may stick to the heating device 200 or be mixed with or melted in the stagnant hot water. In order to lower the possibility of scale formation, the temperature of hot water stagnant in the hot water receptor 210 is lowered, the flow rate of water flowing through the hot water receptor 210 is increased, or the drain mode is periodically performed. In addition, it is necessary to remove stagnant hot water in which the formed scale is mixed or dissolved.

In order to lower the temperature of hot water stagnant in the hot water receptor 210, the controller 700 controls the heater 220 to discharge the hot water from the hot water receptor 210 while the operation of the heater 220 is stopped while the drain mode is performed. ) and the valve unit 500 (heater cooling control). As the operation of the heater 220 is stopped while the drain mode is performed, the temperature of the hot water discharged from the hot water receptor 210 is lowered, and accordingly, the possibility of scale forming inside the hot water providing device 1 This has a lowering effect.

In addition, in order to increase the flow rate of water flowing through the hot water receptor 210 when the drain mode is performed, the first valve module 510 may allow the flow of purified water at a greater flow rate than the second valve module 520. there is. Through the first valve module 510, the flow rate of purified water in the drain mode can be faster than the flow rate of purified water in the hot water dispensing mode. The scale formed inside the hot water supply device 1 through the first valve module 510 is effectively removed by purified water having a relatively fast flow rate.

In addition, in order to perform the periodic drain mode, the control device 700 may perform the drain mode for a predetermined time at each predetermined period regardless of whether hot water is discharged to the outside. In this way, as the hot water providing device 1 periodically performs the drain mode, there is an effect of preventing scale from being accumulated inside the hot water providing device 1 and increasing in size.

In addition, in order to remove the stagnant hot water in which the formed scale is mixed or melted, the control device 700 controls the hot water stagnant in the hot water receptor 210 to be discharged to the outside through the inlet 211 and the drain passage 450. 6 The valve module 560 may be opened. In addition, the control device 700 may continue to perform the drain mode so that the inside of the heating device 200 is washed with purified water even after all the hot water stagnant in the hot water receptor 210 is discharged to the outside. As such, the hot water providing device 1 removes stagnant hot water in the hot water receptor 210, and furthermore, the effect of efficiently removing the scale attached to the heating device 200 through the flow of purified water in the drain mode. there is

Although the embodiments of the present invention have been described as specific embodiments, this is merely an example, and the present invention is not limited thereto, and should be construed as having the widest scope according to the technical spirit disclosed herein. A person skilled in the art may implement a pattern of a shape not indicated by combining/substituting the disclosed embodiments, but this also does not deviate from the scope of the present invention. In addition, those skilled in the art can easily change or modify the disclosed embodiments based on this specification, and it is clear that such changes or modifications also fall within the scope of the present invention.

1: hot water supply device
100: filter unit 200: heating device
210: hot water receptor 211: inlet
212: discharge port 220: heater
300: outlet part 400: flow part
410: raw import flow 420: purified water import flow
430: purified water outlet flow path 440: hot water outlet flow path
450: drain flow path 460: middle flow path
500: valve unit 510: first valve module
520: second valve module 530: third valve module
540: fourth valve module 550: fifth valve module
560: sixth valve module 600: sensor
700: control device

Claims (9)

a heating device that heats purified water to provide hot water, and includes an inlet through which the purified water flows in and an outlet through which the hot water is discharged;
a water outlet for dispensing the purified water and the hot water to the outside;
a flow path part providing a passage through which the purified water and the hot water flow; and
A valve unit that is selectively opened and closed to control the flow of the purified water and the hot water in the flow path unit;
The flow path part,
a hot water outlet flow path providing a passage through which the hot water provided from the heating device flows to the water outlet; and
Including a drain flow path capable of discharging the hot water discharged from the heating device to the outside through the inlet,
Hot water supply device. According to claim 1,
The hot water discharged through the discharge hole is discharged to the outside through the water outlet and the hot water discharged through the inlet is discharged to the outside through the drain passage to be placed in any one mode of the drain mode. Further comprising a control device for controlling the opening and closing of the valve unit,
Hot water supply device. According to claim 2,
The flow path part further includes a purified water outlet flow path providing a passage through which the purified water flows into the hot water outlet flow path;
The control device,
Controlling the valve unit so that the purified water is discharged to the outside by sequentially flowing through the purified water outlet flow path, the heating device, and the drain flow path in the drain mode.
Hot water supply device. According to claim 2,
The control device
The drain mode is performed when a predetermined time has elapsed from the point where the hot water dispensing mode ends, and the heating device is discharged from the heating device while the operation of the heating device is stopped while the drain mode is performed. Controlling the device and the valve unit,
Hot water supply device. According to claim 4,
Further comprising a sensor capable of measuring at least one of the temperature of the heating device and the temperature of the hot water in the heating device,
The control device controls the valve unit to stop the drain mode when the temperature measured by the sensor is below a preset threshold temperature.
Hot water supply device. According to claim 1,
The flow path part,
a purified water outlet passage providing a passage through which the purified water flows to the water outlet; and
An intermediate flow path connecting the purified water outlet flow path and the hot water outlet flow path;
The valve part,
Including a first valve module that is selectively opened and closed to control the flow of purified water in the purified water outlet flow passage and the intermediate flow passage,
Hot water supply device. According to claim 6,
The flow path part,
Further comprising a purified water inlet passage providing a passage for the purified water to flow to the heating device,
The valve part,
Further comprising a second valve module that is selectively opened and closed to control the flow of the purified water in the purified water inlet passage;
The first valve module is configured to allow a flow of a larger flow rate than the second valve module,
Hot water supply device. According to claim 6,
The valve part,
A third valve module that is selectively opened and closed to control the flow of the hot water in the hot water outlet passage;
The third valve module is disposed in the hot water outlet passage between the intermediate passage and the discharge port.
Hot water supply device. According to claim 1,
The inlet is formed at the bottom of the heating device,
The outlet is disposed above the inlet,
Hot water supply device.

Images