Water distribution device

Abstract

A water distribution device according to one embodiment of the present invention comprises: a water supply channel through which raw water supplied from a water source flows; a filter configured to generate purified water by filtering the raw water supplied through the water supply channel; a purified water passage through which the purified water that has passed through the filter flows; and a water quality measuring unit connected to the purified water passage and configured to measure the water quality of the purified water. The water quality measurement unit includes a turbidity sensor module configured to measure a turbidity of water introduced therein. The turbidity sensor module includes: a water inlet portion for receiving water; an internal passage through which water introduced through the water inlet portion flows; a chamber filled with water discharged from the internal passage; a light source unit including a light source configured to emit light into the chamber; and a light receiver configured to receive scattered light scattered from the chamber, in which a light path of light emitted by the light source unit is spaced apart from the internal channel.

Description

Technical Field

[0001] The present specification relates to a water dispensing device and a method of operating the same, and more particularly, to a water dispensing device including a sensor capable of determining water quality and a method of operating the same. Background Art

[0002] A water dispenser is a device that supplies water in a desired amount at a desired temperature based on user input. While these devices are used in a variety of fields, they are commonly found in refrigerators and water purifiers. In particular, the water dispensers in refrigerators and water purifiers are configured to automatically supply a set amount of water based on user input. Recently, water dispensers have been developed that can supply not only purified water but also both cold and hot water.

[0003] For example, a water purifier is connected to a water source (such as a faucet) to receive raw water, and is configured to remove floating matter and harmful substances contained in the raw water by using a filter, and to purify and distribute a desired amount of water according to a user's operation. Various purifiers are available on the market, including purifiers that can not only purify water but also heat or cool the purified water to supply hot or cold water. In addition, purifiers with compact sizes and that can be installed in various installation environments are currently being developed.

[0004] If water distribution equipment is used for an extended period of time, microorganisms and the like may multiply in pipes, valves, and water outlets, or the equipment may become contaminated. Furthermore, if the filter replacement cycle has passed, floating particles and harmful substances contained in the raw water may not be removed. Therefore, it is important to accurately measure water quality and hygienically manage water distribution equipment, and the quality performance of purified water should also be managed.

[0005] Korean Patent Publication No. 10-2013-0119357 as a related art discloses a turbidity sensor configured to determine the turbidity of a solution based on the ratio of visible light to infrared light, but does not provide a means for preventing or removing noise generated due to an internal channel environment. Summary of the Invention

[0006] Technical issues

[0007] An object of the present disclosure is to provide a water dispensing device capable of more accurately measuring water quality.

[0008] Another object of the present disclosure is to provide a water dispensing device that can effectively separate and discharge air bubbles.

[0009] Yet another object of the present disclosure is to provide a water dispensing device capable of accurately measuring the water quality of raw water and purified water.

[0010] Another object of the present invention is to provide a water distribution device that can automatically detect abnormal water quality and manage the channel in a hygienic manner.

[0011] Yet another object of the present disclosure is to provide a water dispensing device capable of improving sensing accuracy and efficiency through a rinsing operation and a water pipe configuration sharing a sensor.

[0012] Solution to the problem

[0013] According to one aspect of the present disclosure, the above and other objects can be achieved by providing a water distribution device, the water distribution device comprising: a water supply channel, through which raw water supplied from a water source flows; a filter, the filter being configured to produce purified water by filtering the raw water supplied via the water supply channel; a purified water channel, through which the purified water having passed through the filter flows; and a water quality measuring unit connected to the purified water channel and configured to measure the water quality of the purified water, wherein the water quality measuring unit comprises a turbidity sensor module. The turbidity sensor module is configured to measure the turbidity of water introduced into the turbidity sensor module, wherein the turbidity sensor module includes: a water inlet portion, the water inlet portion being used to receive water; an internal channel, the water introduced through the water inlet portion flowing through the internal channel; a chamber, the chamber being filled with water discharged from the internal channel; a light source unit, the light source unit including a light source configured to emit light into the chamber; and a light receiver, the light receiver being configured to receive scattered light scattered from the chamber, wherein an optical path of the light emitted by the light source unit is spaced apart from the internal channel.

[0014] The turbidity sensor module may include a first water outlet portion through which water is discharged from the internal channel to the chamber, and a second water outlet portion through which water is discharged from the chamber to the outside.

[0015] The first water outlet portion may be formed in an opening portion of one surface of the inner passage facing the second water outlet portion.

[0016] One surface of the inner passage, in which the first water outlet portion is formed, may have inclined portions inclined at both sides of the first water outlet portion.

[0017] The second water outlet portion may have a size smaller than half the length of the internal passage.

[0018] The turbidity sensor module may further include a flow generator formed in an opening portion of a side surface of the internal channel facing the optical path.

[0019] The flow generator and the first water outlet portion may have the same size.

[0020] The flow generator may be located closest to the water inlet portion at a side of the internal passage contacting the chamber.

[0021] The turbidity sensor module may further include an inner inlet portion through which water discharged from the first water outlet portion flows into the chamber, wherein a size of the inner inlet portion may be larger than a size of the first water outlet portion.

[0022] The inner inlet portion may be formed on a line extending in a longitudinal direction of the inner passage.

[0023] A size of the first water outlet portion may be smaller than a size of the water inlet portion, and a size of the second water outlet portion may be larger than a size of the water inlet portion.

[0024] The water inlet portion and the second water outlet portion may have the same size, and the first water outlet portion may be smaller than half the length of the internal passage.

[0025] The optical path may be formed parallel to a longitudinal direction of the internal channel.

[0026] The chamber may include a flat portion, the light source unit or the light receiver is disposed on the flat portion, and an inclined portion disposed between the flat portion and the second water outlet portion.

[0027] The water distribution device may further include: a water outlet through which the purified water is discharged; a water discharge channel that guides the purified water to the water outlet; and a discharge channel that branches from the water discharge channel between the water quality measuring unit and the water outlet, and through which the raw water or the purified water is discharged.

[0028] The water distributing device may further include a water discharge valve selectively supplying the raw water or the purified water to the water discharge channel and the drain channel.

[0029] The water distribution device may further include: a hot water channel having a side branching from the purified water channel; a hot water module disposed in the hot water channel and configured to heat the purified water passing through the hot water channel; a cold water channel having a side branching from the purified water channel; and a cold water module disposed in the cold water channel and configured to cool the purified water passing through the cold water channel.

[0030] The water dispensing device may further include a sensing channel that branches from the water supply channel and through which the raw water flows, wherein the water quality measuring unit is configured to measure the water quality of the purified water in response to the purified water being introduced through the purified water channel, and is configured to measure the water quality of the raw water in response to the raw water being introduced through the sensing channel.

[0031] The water quality measurement unit may be configured to measure the water quality of the purified water after performing a rinsing operation in which the purified water passes through the water quality measurement unit one or more times when measuring the water quality of the raw water.

[0032] The water dispensing device may further include a switching valve configured to supply the raw water to the water supply channel or the sterilization channel; and a sensing valve configured to open and close the sensing channel.

[0033] Advantageous Effects of the Present Disclosure

[0034] According to at least one embodiment of the present disclosure, water quality can be measured more accurately.

[0035] According to at least one embodiment of the present disclosure, the water quality of raw water and purified water can be measured more accurately.

[0036] According to at least one embodiment of the present disclosure, bubbles can be effectively separated and discharged.

[0037] According to at least one embodiment of the present disclosure, it is possible to hygienically manage a passage by automatically detecting abnormal water quality and performing disinfection.

[0038] According to at least one embodiment of the present disclosure, sensing accuracy and efficiency may be improved through a rinsing operation and a water pipe configuration that shares a sensor.

[0039] Meanwhile, various other effects will be directly or implicitly disclosed in the following detailed description of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a block diagram of the main components of a water dispensing device according to an embodiment of the present disclosure.

[0041] Figure 2 is a conceptual diagram illustrating a water dispensing apparatus according to an embodiment of the present disclosure.

[0042] Figures 3 to 5 is describing Figure 2 Refer to the diagram when operating the water distribution device.

[0043] Figure 6is a conceptual diagram illustrating a water dispensing apparatus according to an embodiment of the present disclosure.

[0044] Figure 7 is a diagram referred to when describing optical turbidity sensing using light.

[0045] Figures 8 to 12 2 are drawings referred to in describing a turbidity sensor module according to various embodiments of the present disclosure. DETAILED DESCRIPTION

[0046] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, it should be understood that the present disclosure is not limited to these embodiments and can be modified in various forms.

[0047] In the drawings, in order to clearly and briefly describe the embodiments of the present disclosure, illustration of parts that are not related to the description is omitted, and the same reference numerals are used for the same or very similar parts throughout the specification.

[0048] Hereinafter, the suffixes "module" and "unit" of the elements herein are used for convenience of description and thus can be used interchangeably and do not have any distinguishable meanings or functions. Therefore, the terms "module" and "unit" can be used interchangeably.

[0049] It will be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0050] Figure 1 is a block diagram of the main components of a water dispensing device according to an embodiment of the present disclosure.

[0051] Reference Figure 1 The water dispensing device according to an embodiment of the present disclosure includes a water quality measuring unit 50. The water quality measuring unit 50 may include a turbidity sensor module 55 (see Figure 9). According to an embodiment of the present disclosure, turbidity (degree of pollution) can be detected in an optical sensing manner. The transmitted light method and the scattered light method are used as optical sensing methods for measuring turbidity. The transmitted light method senses turbidity by emitting light to the fluid, receiving the light that has passed through the fluid, and processing the data. The scattered light method senses turbidity by receiving scattered light and converting it into data, and the scattered light method is classified according to the method of generating scattered light and the method of processing the received light data. The turbidity sensor module 800 according to an embodiment of the present disclosure can emit light to some raw water or purified water, and can sense turbidity based on the received scattered light pattern. According to an embodiment of the present disclosure, particles and microorganisms are separated by patterning the movement and intensity of light scattered by microorganisms, and big data processing is performed to distinguish the types of indicator microorganisms according to water quality / sanitation standards. In addition, the detected microbial concentration value and safety index are provided on the display for intuitive identification by the user.

[0052] In addition, the water quality measurement unit 50 can use a water quality measurement sensor, such as a turbidity sensor, a microbial sensor, a total dissolved solids (TDS) sensor, etc., to detect contamination of the water in the channel. The water quality measurement unit 50 can include at least one of a turbidity sensor, a microbial detection sensor, a chlorine sensor, a TDS sensor, and a biochemical oxygen demand (BOD) sensor, and can measure at least one of the turbidity, microorganisms, residual chlorine, total dissolved solids (TDS), and dissolved oxygen of the incoming water. At least one of the sensors included in the water quality measurement unit 50 can be a shared sensor that measures the water quality of both the raw water and the purified water.

[0053] In the present disclosure, the inflow of purified water or raw water into the water quality measurement unit 50 does not only mean that the purified water or raw water flows into the water quality measurement unit 50. For example, some of the purified water or raw water may be sampled for water quality measurement in the water quality measurement unit 50 and then discharged after measurement. In addition, at least some of the sensors included in the water quality measurement unit 50 may also measure the water quality of the flowing liquid. In this case, the inflow of purified water or raw water into the water quality measurement unit 50 may mean that at least some of the purified water or raw water passes through the sensor-capable area of ​​the water quality measurement unit 50.

[0054] For example, if the turbidity sensor module 800 includes an internal chamber, and when water flows into the internal chamber connected to the channel 20 and fills the chamber, the turbidity sensor module 800 can measure the water quality by emitting light to the water filling the chamber and receiving the scattered light pattern. In addition, the water in the internal chamber can be discharged after the water quality is measured. Alternatively, the light source and light receiver of the turbidity sensor module 800 can be located in a specific channel section (e.g., the section after the purified water channel 20 and the sensing channel 12 are connected) to emit light to the purified water or raw water passing through the specific channel section and receive the scattered light pattern.

[0055] The water dispensing device according to an embodiment of the present disclosure can measure the water quality of raw water and purified water by using a shared sensor for the same measurement item (such as turbidity, etc.). The turbidity sensor module can measure the turbidity of the raw water and the turbidity of the purified water and transmit the sensed data to the controller 60. The controller 60 can control other components of the water dispensing device, such as the turbidity sensor, etc., based on the sensed data of the water quality measurement unit 50.

[0056] The water dispensing device comprises a filter 10 (see Figure 2 The filter 10 is configured to produce purified water by filtering raw water supplied from a water source. The filter 10 is provided to purify the supplied raw water and filter out various impurities and harmful substances contained in the raw water. One or more filters 10 are provided, and in the case of providing multiple filters, a combination of filters with various functions can be used. For example, three filters 10 can be provided, including a pre-carbon filter, a post-carbon filter, and a membrane filter or a hollow fiber membrane filter provided between the pre-carbon filter and the post-carbon filter. Alternatively, the filter 10 may include a pre-carbon filter and a UF composite filter.

[0057] The purified water purified by the filter 10 flows to the storage tank or channel 20 (see Figure 2 Since the water stored in the storage tank provides an environment suitable for the growth of microorganisms over time, it is more preferred that the water immediately flows through the channel 20. The purified water that has passed through the filter 10 flows to the purified water channel 20.

[0058] In addition, the water distribution device includes a valve unit 90 including valves for controlling the flow of water. The valve unit 90 may include a plurality of valves V1, V2, V3, etc., which will be described later.

[0059] When the water quality measuring unit 50 measures the water quality of the raw water, the controller 60 may control the valve unit 90 , etc., so that a rinsing operation in which purified water passes through the water quality measuring unit 50 one or more times is performed.

[0060] The water quality measuring unit 50 measures the water quality of the purified water after performing the rinsing operation, thereby minimizing the influence of the raw water on the water quality measurement of the purified water. Therefore, by using only one water quality sensor of the same type, each of the raw water and the purified water can be effectively and accurately sensed.

[0061] When tap water and purified water are discharged, they generally have a low degree of water contamination, and in order to measure low contamination concentrations, it is important to minimize measurement deviations. According to an embodiment of the present disclosure, by providing and controlling a channel capable of simultaneously measuring raw water and discharged water using a single sensor, compared to a technique of measuring raw water and discharged water separately, an increase in material costs can be minimized and a product can be manufactured in a compact size.

[0062] The water quality of tap water (raw water) and that of water purifiers (purified water) mostly fall into the low concentration range, and in order to clearly show the performance difference between raw water and discharged water, it is most important to minimize the measurement deviation between devices by using one sensor for comparison.

[0063] In addition, the water distribution device may include a hot water module 30 and a cold water module 40 configured to supply hot / cold water. The hot water module 30 heats purified water and then flows the water toward the water outlet 90a (see FIG. Figure 2 The cold water module 40 cools the purified water and then discharges the water toward the water outlet 90a.

[0064] In addition, the water dispensing device further includes an operating unit 75 and an output unit 85 .

[0065] The operation unit 75 can receive user input and include one or more buttons. For example, the operation unit 75 can be configured as a touch panel and can include a capacity button for selecting the capacity of water to be discharged, a hot water button for selecting the hot water to be discharged and the temperature of the hot water, a purified water button for selecting purified water, a cold water button for selecting cold water, and other function buttons.

[0066] The output unit 85 may include a display device, such as a display (not shown) or a light emitting diode (LED) (not shown), etc. For example, the output unit 85 may display information such as the operating status of the water dispensing device, the operating status related to the occurrence of an error, or the degree of water contamination.

[0067] The output unit 85 may include an audio device such as a speaker (not shown), a buzzer (not shown), etc. For example, the output unit 85 may output a sound effect for the operating state of the water dispensing device and output a predetermined warning sound when an error occurs.

[0068] In addition, the water distribution device may further include a module for sanitation. For example, the water distribution device includes a sterilization module 70 using high temperature or hot water. In addition, the water distribution device includes a water outlet sterilization module 80 for sterilization located on the side of the water outlet 90a where the possibility of contamination is high.

[0069] The sterilization module 70 instantly heats the water to a high temperature to sterilize bacteria growing in the water. Furthermore, the controller 60 can operate the sterilization module 70 so that the sterilized water (hot water) discharged from the sterilization module 70 can circulate through another channel to sterilize that channel. Based on the water quality data measured by the water quality measurement unit 50, the controller 60 can control the hot water discharged from the sterilization module 70 to flow to different channel areas, thereby performing a sterilization operation on each channel area.

[0070] The water outlet sterilization module 80 may remove bacteria or viruses by emitting ultraviolet (UV) light toward the water outlet 90a. The water outlet sterilization module 80 may include at least one ultraviolet (UV) lamp or at least one ultraviolet light emitting diode (UVLED).

[0071] The water outlet sterilization module 80 can be activated periodically under the control of the controller 60. Alternatively, the water outlet sterilization module 80 can be activated within a specified time period before the water is discharged. More preferably, based on the water quality data measured by the water quality measurement unit 50, the controller 60 can activate the water outlet sterilization module 80 only when necessary, thereby improving efficiency. For example, the controller 60 can control the water outlet sterilization module 80 based on the purified water quality measurement results.

[0072] The controller 60 may be connected to each component provided in the water distribution device. For example, the controller 60 may send and / or receive signals with the corresponding components provided in the water distribution device and may control the overall operation of the corresponding components.

[0073] The controller 60 may include at least one processor and may control the overall operation of the water dispensing device by using the processor included therein. Here, the processor may be a general-purpose processor such as a central processing unit (CPU). Obviously, the processor may be a dedicated device such as an ASIC or other hardware-based processor.

[0074] The controller 60 may perform various operations based on data received from the water quality measurement unit 50, which includes various sensors such as the turbidity sensor 800. In addition, the controller 60 may store the data received from the water quality measurement unit 50 in a memory (not shown).

[0075] The water quality measurement unit 50 can measure the water quality and output it to the controller 60. The controller 60 can perform feedback operations in response to the received raw water and / or purified water quality measurement data. Alternatively, the water quality measurement unit 50 can directly determine the contamination level and send it to the controller 60, and the controller 60 can control other components based on the received contamination level to perform appropriate feedback operations.

[0076] By identifying the contamination status of the raw water and / or purified water, the controller 60 may control the output unit 85 to provide a cleaning alarm or information on a filter replacement cycle to the user.

[0077] In addition, the controller 60 can detect odors that may be generated based on the degree of contamination of raw water and / or purified water, and can operate the sterilization module 70 and the water outlet sterilization module 80 to perform automatic cleaning / sterilization logic before the customer recognizes it. Therefore, user convenience and hygiene for non-professional users can be improved.

[0078] Figure 2 is a conceptual diagram illustrating a water dispensing device according to an embodiment of the present disclosure, and Figures 3 to 5 is describing Figure 2 Refer to the diagram when operating the water distribution device.

[0079] Reference Figure 2 The water distributing apparatus includes a water supply channel 11 through which raw water supplied from a water source flows; and a filter unit 10 configured to generate purified water by filtering the raw water supplied by the water supply channel 11 .

[0080] Purified water having passed through the filter unit 10 may flow toward the water outlet 90a through the purified water passage 20. Purified water having passed through the filter unit 10 may flow into the water quality measuring unit 50. When purified water is introduced, the water quality measuring unit 50 may measure water quality of the purified water.

[0081] In addition, the sensing channel 12 may branch from the water supply channel 11 so that raw water can directly flow into the water quality measurement unit 50 through the sensing channel 12. When raw water is introduced, the water quality measurement unit 50 may measure the water quality of the raw water.

[0082] According to an embodiment of the present disclosure, a water supply valve V1 may be provided in the water supply passage 11, and the water supply valve V1 is configured to control the supply of water to the filter unit 10 and the purified water passage 20. The water supply valve V1 may open and close the purified water passage 20. When the water supply valve V1 is opened, raw water flows along the purified water passage 20. Figure 3 The first line L1 is purified by passing through the filter unit 10 , and the purified water may flow into the water quality measurement unit 50 through the purified water channel 20 .

[0083] On the other hand, the water supply channel 11 may include a first water supply channel 11 a connecting the water source with the water supply valve V1 and a second water supply channel 11 b connecting the water supply valve V1 with the filter 10 .

[0084] In addition, the sensing passage 12 may have a first end connected to the first water supply channel 11a and a second end connected to the water quality measurement unit 50. A valve V2 configured to open and close the sensing channel 12 may be provided in the sensing channel 12. When the sensing valve V2 is opened, raw water may flow along the sensing channel 12. Figure 4 The second line L2 flows directly into the water quality measurement unit 50 through the sensing channel 12 .

[0085] Reference Figure 2 The water distribution device may further include: a water outlet 90a, through which purified water is discharged; a water discharge channel 13, which guides the purified water to the water outlet 90a; a discharge channel 14, which branches from the water discharge channel 13 between the water quality measuring unit 50 and the water outlet 90a, and through which raw water or purified water is discharged; and a water discharge valve V3, which selectively supplies raw water or purified water to the water discharge channel 13 and the discharge channel 14.

[0086] Under the control of controller 60, water discharge valve V3 transfers water that has undergone water quality measurement to drain section 90b and water outlet 90a. During this process, the water that has undergone water quality measurement flows into drain passage 14. By draining and cleaning the raw water, it is prevented from being discharged as drinking water.

[0087] On the other hand, the water discharge channel 13 may include a first water discharge channel 13 a connecting the water quality measurement unit 50 with the water discharge valve V3 , and a second water discharge channel 13 b connecting the water discharge valve V3 with the water outlet 90 a .

[0088] On the other hand, a water outlet sterilization module 80 is located on one side of the water outlet 90a, which discharges purified water. This module 80 sterilizes the space surrounding the water outlet and any remaining water. The controller 60 can operate the module 80 for a predetermined period of time based on the water quality data measured by the water quality measurement unit 50.

[0089] Reference Figure 2 , the sterilization passage 71 may have a first side branching from the water supply passage 11 and a second side connected to the filter 10 side, and a sterilization module 70 configured to heat water passing through the sterilization passage 71 is provided in the sterilization passage 71. The controller 60 may operate the sterilization module 70 for a predetermined period of time based on the water quality data measured by the water quality measuring unit 50.

[0090] According to an embodiment of the present disclosure, the water supply valve V1 may be a switching valve that selectively supplies raw water to the water supply channel 11 or the sterilization channel 71 .

[0091] Reference Figure 2 The water distribution device may further include: a hot water channel 21 having a side branching from the purified water channel 20; a hot water module 30, which is arranged in the hot water channel 21 and is configured to heat the purified water passing through the hot water channel 21; a cold water channel 22 having a side branching from the purified water channel 20; and a cold water module 40, which is arranged in the cold water channel 22 and is configured to cool the purified water passing through the cold water channel 22.

[0092] Reference Figure 2 , the hot water channel 21 and the cold water channel 22 can be joined to the purified water channel 2 again. Alternatively, the hot water channel 21 and the cold water channel 22 can also be joined to the water supply channel 13 again.

[0093] According to an embodiment of the present disclosure, the discharge pump 65 may be provided in the discharge channel 14. By operating the discharge pump 65 after measuring the water quality, the water for which the water quality measurement is performed may be discharged to the outside more quickly at a faster rate.

[0094] Furthermore, the drain pump 65 can operate during the sterilization process for each channel section. Therefore, sterilized hot or hot water can be discharged to the outside more quickly. Specifically, when sterilizing the water discharge channel 13 of the cork connected to the water outlet 90a, some hot water is discharged toward the water outlet 90a, but a large amount of hot water may be discharged toward the drain portion 90b. This prevents potential safety incidents, user discomfort, and the inconvenience of having to handle large amounts of hot water when discharging large amounts of hot water.

[0095] On the other hand, the water quality measuring unit 50 may measure the water quality of purified water when purified water is introduced through the purified water channel 20 , and may measure the water quality of raw water when raw water is introduced through the sensing channel 12 .

[0096] When measuring the quality of raw water, the water quality measuring unit 50 can measure the quality of purified water after performing a rinsing operation in which purified water passes through the water quality measuring unit 50 one or more times. As described above, sensing accuracy and efficiency can be improved through the rinsing operation and the water pipe configuration of the shared sensor.

[0097] Figure 6 is a conceptual diagram illustrating a water dispensing apparatus according to an embodiment of the present disclosure.

[0098] The water dispensing device according to an embodiment of the present disclosure may correspond to various water treatment devices and purification devices, such as a purifier, a refrigerator, etc., in which water is introduced from an external source and the introduced water is purified and then discharged.

[0099] For example, the water distributing device may be provided as an under-sink type water purifier, at least a portion of which is provided in the space below the kitchen sink.

[0100] Reference Figure 6 The water dispensing device according to an embodiment of the present disclosure may include a water discharge portion 200 having at least a portion exposed to the outside of the water tank and a remaining body portion installed inside the water tank.

[0101] The water distribution device includes: a water supply channel 11, which guides raw water supplied from the outside to the inside; a filter 10, which is configured to purify the raw water supplied along the water supply channel 11 into purified water; and a purified water channel 20, through which the purified water passing through the filter 10 flows to the water discharge part 200.

[0102] On the other hand, the water supply channel 11 connects an external water source and the filter 10. Raw water supplied from the external water source may be supplied to the filter 10 through the water supply channel 11.

[0103] The water (raw water) supplied to the filter 10 can be purified into purified water by passing through the filter 10. At least one filter 10 can be provided. For example, a plurality of filters 10 can be provided. Therefore, the water that has passed through the water supply channel 11 can be purified into cleaner water by passing through the plurality of filters 10.

[0104] On the other hand, the purified water having passed through the filter 10 may flow toward the water discharge portion 200 exposed to the outside of the water tank 10 through the purified water passage 20 .

[0105] To this end, a first end of the purified water channel 20 may be connected to the filter 10, and a second end of the purified water channel 20 may be connected to the water discharge portion 200. On the other hand, at least one of the cold water channel 22, the hot water channel 21, and the washing water channel 90c may branch from the purified water channel 20.

[0106] exist Figure 6 , an example is illustrated in which the cold water channel 22 is integrated into the purified water channel 20 , and the hot water channel 21 and the washing water channel 90 c are branched from the purified water channel 20 .

[0107] One end of the purified water passage 20 is connected to the filter 10, and water having passed through the filter 10 flows toward the water discharge portion 200 through the connected water discharge passage 13. The water discharge portion 200 includes a water outlet 90a and can dispense purified water, etc.

[0108] Water may be supplied toward the wash water outlet in a sterile water state through the wash water module 1030 provided in the wash water channel 90c. In the case where the water discharge portion 200 includes a plurality of water outlets, the wash water outlet may also be formed in the water discharge portion 200 in some examples.

[0109] On the other hand, a pressure reducing valve 1010 for adjusting the flow rate of water supplied to the filter 10 may be provided in the water supply passage 11 .

[0110] In addition, at least one of a flow sensor 1011 for detecting the flow of water, a feed valve 35 for adjusting the flow of water or regulating the flow of water, or a flow rate sensor (not shown) for detecting the flow rate of water can be installed in the water supply channel 11 or the purified water channel 20.

[0111] In addition, an on / off valve for regulating the flow of water in each channel may be separately provided in the purified water channel 20, the hot water channel 21 and the washing water channel 90c. For example, a washing water valve 1019 may be provided in the washing water channel 90c.

[0112] Alternatively, a cold / hot / purified water valve 1015 for selectively supplying purified water to the purified water channel 20 and the hot water channel 21 may be installed at a branch point of the purified water channel 20 and the hot water channel 21.

[0113] In addition, a safety device 1025 such as a device for preventing backflow may be provided in the hot water channel 21. In addition, a safety valve 1016 for discharging steam may be provided in the hot water module 30. The steam of the hot water module 30 may be discharged toward the discharge portion 90b through the connected channel 15.

[0114] On the other hand, the water discharge valve 1018 is provided in the water discharge passage 13 to supply purified water, cold water, and hot water flowing toward the water discharge part 200 to the water discharge part 200 or may block water.

[0115] In addition, the discharge passage 14 may be branched from the water discharge passage 13, or a discharge valve 1017 may be provided in the discharge passage 14 to discharge purified water, cold water, hot water, and raw water toward the discharge portion 90b.

[0116] On the other hand, for example, each of the water discharge valve 1018 and the drain valve 1017 may be implemented as a three-way valve having one inlet, a first outlet that is selectively opened, and a second outlet, and including an actuator that selectively opens and closes the two outlets. In this case, the first outlet may be connected to the water discharge portion 200, and the second outlet may be connected to the drain portion 90b.

[0117] On the other hand, raw water is supplied through a water supply channel 11 connected to a water source such as a water pipe, a water tank or an underground pipe. A pressure reducing valve 1010 is installed in the water supply channel 11, and the raw water passes through the pressure reducing valve 1010 so that the pressure is reduced to a set pressure.

[0118] In addition, the raw water from which impurities are removed is converted into purified water while passing through the filter 10. The purified water flows along the purified water passage 20. In addition, the water may be branched into cold water-purified water and hot water.

[0119] First, the purified water branched into cold water-purified water is branched into cold water and purified water again, and based on the operation of the cold water module 40 caused by the user's operation of selecting purified water or cold water, the purified water or cold water can be supplied to the user through the water discharge part 200.

[0120] When the user requests to discharge cold water, the purified water passes through the cooling coil inside the cold water module 40. The water flowing along the cooling coil exchanges heat with the coolant in the cold water module 40 and is then cooled. To this end, the coolant is continuously cooled to maintain the set temperature. For reference, the compressor can be driven to cool the coolant. The drive of the compressor can be determined by the cold water temperature sensor provided in the cold water module 40. Therefore, the coolant can always be maintained at a preset temperature, and for this purpose, the drive of the compressor can be controlled. The frequency of the compressor can be adjusted to correspond to the load required by the variable frequency compressor, and the cooling capacity of the compressor can be adjusted. In other words, the compressor can be driven by inverter control to cool the coolant with optimal efficiency.

[0121] On the other hand, when a user requests to discharge hot water, the water can be heated to a set temperature while passing through the hot water module 30. The hot water module 30 can be heated by induction heating, and the output of the working coil provided in the hot water module 30 can be adjusted to achieve this. The purified water passing through the hot water module 30 can be heated to a set temperature. The hot water heated while passing through the hot water module 30 can flow toward the water discharge portion 200.

[0122] On the other hand, the sterilization channel 71 has a first side branched from the water supply channel 11 and a second side connected to the filter 10. A sterilization module 70 configured to heat water passing through the sterilization channel 71 and a flow control valve 1013 configured to adjust the amount of water flowing into the sterilization channel 71 may be provided in the sterilization module 70.

[0123] On the other hand, a feed valve 1012 for selectively supplying raw water to the water supply channel 11 or the sterilization channel 71 may be provided at a position where the sterilization channel 71 branches from the water supply channel 11 .

[0124] On the other hand, the water supply channel 11 may include a first water supply channel 11 a connecting the water source with the feed valve 1012 and a second water supply channel 11 b connecting the feed valve 1012 with the filter 10 .

[0125] On the other hand, the sensing channel 12 may branch from the first water supply channel 11a at the front end of the feed valve 1012. The sensing channel 12 may include a sensing valve 1014 configured to open and close the sensing channel 12 and a backflow prevention device 1020 configured to prevent backflow of raw water.

[0126] The controller 60 may close the feed valve 1012 and open the sensing valve 1014 to control the supply of raw water to the water quality measurement unit 50 through the sensor channel 14 .

[0127] After measuring the water quality of the raw water, the controller 60 may close the water discharge valve 1018 and open the discharge valve 1017 to discharge the raw water measured by the water quality measurement unit 50 toward the discharge portion 90 b .

[0128] The controller 60 may open the feed valve 1012 toward the purified water passage 20 and close the sensing valve 1014 to control the supply of purified water to the water quality measurement unit 50 .

[0129] In addition, the controller 60 may close the water discharge valve 1018 and open the drain valve 1017 to perform a rinsing operation by controlling the purified water having passed through the water quality measuring unit 50 to be discharged toward the drain part 90 .

[0130] Then, the controller 60 can control the valve in the same manner to supply purified water to the water quality measurement unit 50 for water quality measurement of the purified water. Therefore, the influence of the raw water can be removed and the water quality of the purified water can be accurately measured by the same water quality measurement unit 50.

[0131] As described above, the water quality measurement unit 50 includes a turbidity sensor module, which serves as an optical sensor. The turbidity sensor module emits light into the raw water or purified water and senses turbidity based on the received scattered light pattern. For example, the turbidity sensor module can detect scattered light emitted from a visible light laser source, reflected and scattered by floating matter in the water, and output the scattered light as a signal value.

[0132] Scattered light increases in proportion to the amount of particles in the fluid and may also be affected by external noise generated by external environments such as particle behavior or fluid state (physical environments such as the formation of bubbles or vortices), vibrations, etc. Regardless of the amount of particles, the signal value measured by the turbidity sensor may be exaggerated / reduced due to external noise that may affect the scattered light signal.

[0133] Figure 7is a diagram referred to when describing optical turbidity sensing using light.

[0134] Reference Figure 7 Water flows into the chamber 730 through the inlet 740 and the water in the chamber 730 is discharged through the outlet 750. The light source unit 710 including a light source and the light receiver 720 configured to receive light are disposed to face each other on the left or right side of the chamber 730.

[0135] On the other hand, when an optical method is used to measure foreign matter contained in water, an abnormal signal may be detected due to bubbles in the water. Bubbles 730 may be generated as water flows from the inlet 740 to the chamber 730, and at least some of the bubbles 730 may exist in the optical path formed between the light source unit 710 and the light receiver 720 during turbidity sensing. Figure 7 , since the light source unit 710 / light receiver 720 and the outlet 750 / inlet 740 are arranged vertically, bubbles may exist in the light path, thereby causing signal interference.

[0136] In the case of using the light signal and scattered light method, the bubble 730 may affect the scattered light, and the light receiver 20 may receive an excessive signal. Faulty sensor information may cause device malfunction and lead to unnecessary repairs, causing discomfort to users and reducing their satisfaction with the product.

[0137] The present disclosure proposes a method of separating and removing bubbles and measuring floating foreign matter rather than external noise such as bubbles in water, thereby ensuring the reliability of turbidity sensing.

[0138] Figures 8 to 12 2 are drawings referred to in describing a turbidity sensor module according to various embodiments of the present disclosure.

[0139] Figures 8 to 12 A turbidity sensor module 800 is shown, which is included in reference Figures 1 to 6 The water quality measuring unit 50 is described.

[0140] Reference Figures 8 to 12 The turbidity sensor module 800 includes: a water inlet portion 840 for receiving water; an internal channel 860 through which water introduced through the water inlet portion 840 flows; a chamber 830 filled with water discharged from the internal channel 860; a light source unit 810 including a light source configured to emit light into the chamber 830; and a light receiver 820 configured to receive scattered light scattered from the chamber 830.

[0141] In existing optical turbidity sensing, turbidity is determined by measuring the absolute change in scattered light at a 90-degree angle relative to the incident light. In most commercial methods, the intensity of scattered light is measured once per pixel. This requires accessories to maintain light output (lenses, light source temperature control devices, reflective structures, etc.), making accurate measurement instruments expensive and bulky. Furthermore, these instruments are significantly affected by noise (such as biofilm and scale) that affects light source intensity.

[0142] The turbidity sensor module 800 can sense turbidity based on the pattern of received scattered light. For example, the turbidity sensor module 800 can determine turbidity by measuring the relative change in a speckle image, which is obtained by continuously capturing images of light scattered from incident light emitted by the light source unit 810 using the camera module of the light receiver 820. By considering the relative change in the speckle image of scattered light over time, the module is not affected by stationary noise (such as scale) and does not require additional optical accessories, thereby achieving a compact size and low price.

[0143] However, when measuring foreign matter (turbidity) in water, bubbles formed when the fluid is introduced can cause unnecessary optical signals, potentially exaggerating the measured turbidity. Bubbles contained in the water can affect the optical signal of the turbidity sensor, causing it to detect a signal higher than the actual turbidity value, thereby reducing sensing accuracy and potentially transmitting defective information to the water distribution device and actual users.

[0144] In the present disclosure, the light path LL of light emitted by the light source unit 810 is spaced apart from the internal channel 860 , so that even when water introduced through the water inlet portion 810 forms bubbles, the bubbles can be separated from the light path LL as much as possible.

[0145] More specifically, the inner channel 860 primarily filters out bubbles generated by the introduced water and can reduce the amount of bubbles flowing into the chamber 830. Furthermore, the inner channel 860 can guide the inflow / movement path of water so that bubbles do not affect the optical path LL. Bubbles can move toward the first water outlet portion 870 and the second water outlet portion 850 by inertia of movement.

[0146] When water flows through water inlet portion 810, there is a high probability of bubbles forming. Therefore, by connecting internal channel 860 to water inlet portion 840 and controlling the flow of water introduced through water inlet portion 840 into chamber 830 through internal channel 860, bubbles generated when fluid flows into internal chamber 830 of turbidity sensor module 800 can be removed or separated from optical path LL. Therefore, by eliminating the influence of bubbles, a good turbidity signal can be obtained, the occurrence of sensor abnormalities can be prevented in advance, and sensing accuracy and reliability can be improved.

[0147] Reference Figures 8 to 12 The turbidity sensor module 800 may include a first water outlet portion 870 through which water is discharged from the internal channel 860 to the chamber 830, and a second water outlet portion 850 through which water is discharged from the chamber 830 to the outside. The internal channel 860 may be a pipe that prevents air bubbles that may enter through the water inlet portion 840 and air bubbles that may be generated during inflow from flowing into the chamber 830 and guides water to the first water outlet portion 870 and the second water outlet portion 850.

[0148] First water outlet portion 870 is a functional unit that regulates the size of bubbles that may be present in the water flowing through water inlet portion 840. First water outlet portion 870 can be larger than 0.5 times the diameter of the flow channel tube within the water distribution device and smaller than 0.8 times the diameter. If first water outlet portion 870 is too narrow, it will hinder the flow of water. Therefore, it should be larger than at least half the diameter of the flow channel tube. If it is too large, it will not separate bubbles. Therefore, it is preferably smaller than 0.8 times the diameter of the flow channel tube.

[0149] The first water outlet portion 870 may be formed in an opening portion of one surface of the inner channel 860 facing the second water outlet portion 850. The inner channel 860 may have a long side formed in the direction in which water is introduced, and a short side formed in a direction perpendicular to the long side. The long side may be one surface of the inner channel 860 facing the light path LL, and the short side may be one surface of the inner channel 860 facing the second water outlet portion 850. The first water outlet portion 870 may be provided at the short side of the inner channel 860.

[0150] On the other hand, the inner channel 860 may be formed in the shape of a pipe to be easily connected to a water pipe of a water distribution device. In this case, the long side may be formed in the longitudinal direction of the inner channel 860.

[0151] The light source unit 810 can be positioned at the upper end of the chamber 830, and the light receiver 820 can be positioned at the lower end of the chamber 830. Conversely, the light source unit 810 can be positioned at the lower end of the chamber 830, and the light receiver 820 can be positioned at the upper end of the chamber 830. The light source unit 810 and the light receiver 820 are positioned at the upper and lower ends of the chamber 830 to form a light path LL in the vertical direction. Furthermore, the internal channel 860 can be spaced apart from the light source unit 810 / light receiver 820 by a predetermined distance. To eliminate the effects of air bubbles, the internal channel 860 and the light source unit 810 / light receiver 820 are preferably spaced apart by a maximum distance on both sides of the chamber 830. In some examples, the light path LL can be formed parallel to the longitudinal direction of the internal channel 860, rather than perpendicular thereto. To prevent air bubbles from interfering with the light path LL, the light source unit 810 / light receiver 820 and the inlet 840 / outlet 850 can be horizontally aligned.

[0152] In the turbidity sensing zone Z1 including the light path LL, the light source unit 810 emits light and the light receiver 820 receives scattered light, and senses turbidity based on the scattered light pattern. Meanwhile, in order to minimize the introduction of bubbles into the turbidity sensing zone Z1, the internal channel 860 is provided at the front end of the turbidity sensing zone Z1.

[0153] On the other hand, the water inlet portion 840 is connected to the flow channel pipe inside the water distribution device so that its size (diameter) a is preferably the same as the diameter of the flow channel pipe inside the water distribution device.

[0154] Reference Figure 8 In the turbidity sensor module 800 according to an embodiment of the present disclosure, the water inlet portion 840 and the second water outlet portion 850 may have the same size (diameter). The shape and size of the water inlet portion 840 and the second water outlet portion 850 may correspond to the shape and size of the water pipe of the water distribution device.

[0155] On the other hand, the chamber 830 may include a flat portion 831 on which the light source unit 810 or the light receiver 820 is disposed, and an inclined portion 833 disposed between the flat portion 831 and the second water outlet portion 850. The inclined portion 833 is inclined to guide bubbles that may escape from the first water outlet portion 870 to the second water outlet portion 850.

[0156] Reference Figure 9In the turbidity sensor module 800 according to an embodiment of the present disclosure, the size of the first water outlet portion 870 can be smaller than the size of the water inlet portion 840, and the size of the second water outlet portion 850 can be larger than the size of the water inlet portion 840. In order to quickly measure the turbidity of water flowing into the turbidity sensor module 800, it is necessary to ensure sufficient internal flow so that the sample is well mixed and flows smoothly to the outlet (second water outlet portion 850). Therefore, the size of the second water outlet portion 850 can be larger than the size of the water inlet portion 840. In other words, the outlet diameter can be larger than the inlet diameter, thereby allowing the water filled therein to be discharged smoothly through the outlet.

[0157] Reference Figure 10 , the first water outlet portion 870 may be smaller than half the longitudinal length C of the internal channel 860. That is, the longitudinal length C of the internal channel 860 is twice the size (diameter) of the first water outlet portion 870, thereby ensuring sufficient space inside the internal channel 860. In addition, the size of the second water outlet portion 850 may be smaller than half the length of the internal channel 830.

[0158] Reference Figure 10 The turbidity sensor module 800 according to an embodiment of the present disclosure may further include a flow generator 880 formed in an opening portion of the side surface (long side) of the internal channel 860 facing the optical path LL. That is, the two outlets 870 and 880 may be provided above / below the water inlet channel of the internal channel 860. Therefore, due to the pressure difference when the water moves, the water therein flows into the flow generator 880 located below the water inlet channel, causing an internal flow and enabling water exchange.

[0159] The flow generator 880 is a functional unit capable of separating bubbles present in or potentially generated in the water flowing through the water inlet portion 840. In some examples, the flow generator 880 and the first water outlet portion 870 may have the same dimensions. That is, the diameter of the flow generator 880 may be the same as that of the first water outlet portion 870. The flow generator 880 may be positioned closest to the water inlet portion 840 on the side where the internal passage 860 contacts the chamber 830.

[0160] Reference Figures 8 to 12 , the turbidity sensor module 800 may further include an internal inlet portion 835 through which water in the chamber 830 flows to the second water outlet portion 850 .

[0161] The inner inlet portion 835 is a section where water flowing in from the outer channel 860 flows toward the turbidity sensing region 1 including the optical path LL, and may also be a section where water within the chamber 830 flows toward the second water outlet portion 850 .

[0162] The dimension b of the inner inlet portion 835 may be greater than that of the first water outlet portion 870. To allow water to smoothly flow into the turbidity sensing zone Z1, the height b of the inner inlet portion 835 may preferably be greater than or equal to at least 0.25×the inner channel height c.

[0163] In some examples, the inner inlet portion 835 may be formed on a line extending in the longitudinal direction of the inner channel 860 .

[0164] Reference Figure 11 and Figure 12 , one surface of the inner channel 86 in which the first water outlet portion 870 is formed may include inclined portions 890 inclined at both sides of the first water outlet portion 870. Therefore, water can be discharged more smoothly through the first water outlet portion 870.

[0165] Even in this case, a flow generator 895 is further included, which is formed in the opening portion of the side surface (long side) of the internal channel 860 facing the optical path LL. The flow generator 895 and the first water outlet portion 870 may have the same size. The flow generator 895 may be positioned closest to the water inlet portion 840 on the side where the internal channel 860 contacts the chamber 830.

[0166] It will be apparent that although preferred embodiments have been shown and described above, the present disclosure is not limited to the specific embodiments described above, and that various modifications and variations may be made by those skilled in the art without departing from the spirit of the appended claims. Therefore, it is intended that modifications and variations should not be understood independently of the technical spirit or perspective of the present disclosure.

Claims

1. A water distribution device, comprising: a water supply channel through which raw water supplied from a water source flows; a filter configured to produce purified water by filtering the raw water supplied through the water supply channel; a purified water passage through which the purified water having passed through the filter flows; as well as a water quality measuring unit connected to the purified water channel and configured to measure the water quality of the purified water, wherein the water quality measurement unit includes a turbidity sensor module configured to measure turbidity of water introduced into the turbidity sensor module, Wherein, the turbidity sensor module includes: a water inlet portion, the water inlet portion being configured to receive water; an internal passage through which water introduced through the water inlet portion flows; a chamber filled with water drained from the internal passage; a light source unit including a light source configured to emit light into the chamber; and a light receiver configured to receive scattered light scattered from the chamber, Wherein, a light path of light emitted by the light source unit is spaced apart from the internal channel.

2. The water distribution device according to claim 1, wherein The turbidity sensor module includes a first water outlet portion through which water is discharged from the internal passage to the chamber, and a second water outlet portion through which water is discharged from the chamber to the outside.

3. The water distribution device according to claim 2, wherein: The first water outlet portion is formed in an opening portion of one surface of the inner passage facing the second water outlet portion.

4. The water distribution device according to claim 2, wherein: One surface of the inner passage, where the first water outlet portion is formed, has inclined portions inclined at both sides of the first water outlet portion.

5. The water distribution device according to claim 2, wherein: The second water outlet portion has a size smaller than half the length of the internal passage.

6. The water distribution device according to claim 2, wherein: The turbidity sensor module further includes a flow generator formed in an opening portion of a side surface of the internal channel facing the optical path.

7. The water distribution device according to claim 6, wherein: The flow generator and the first water outlet portion have the same size.

8. The water distribution device according to claim 6, wherein: The flow generator is located closest to the water inlet portion at a side of the internal passage contacting the chamber.

9. The water distribution device according to claim 2, wherein: The turbidity sensor module further includes an internal inlet portion through which water discharged from the first water outlet portion flows into the chamber. Wherein, the size of the inner inlet portion is larger than the size of the first water outlet portion.

10. The water distribution device according to claim 9, wherein: The inner inlet portion is formed on a line extending in a longitudinal direction of the inner passage.

11. The water distribution device according to claim 2, wherein: A size of the first water outlet portion is smaller than a size of the water inlet portion, and a size of the second water outlet portion is larger than a size of the water inlet portion.

12. The water distribution device according to claim 2, wherein: The water inlet portion and the second water outlet portion have the same size, and the first water outlet portion is smaller than half the length of the internal passage.

13. The water distribution device of claim 1, wherein: The optical path is formed parallel to the longitudinal direction of the internal channel.

14. The water distribution device of claim 1, wherein: The chamber includes a flat portion, the light source unit or the light receiver is disposed on the flat portion, and an inclined portion disposed between the flat portion and the second water outlet portion.

15. The water distribution device of claim 1, further comprising: a water outlet, through which the purified water is discharged; a water discharge channel, the water discharge channel guiding the purified water to the water outlet; as well as a discharge passage that branches from the water discharge passage between the water quality measurement unit and the water outlet, and through which the raw water or the purified water is discharged. 16 . The water distributing device according to claim 15 , further comprising a water discharge valve which selectively supplies the raw water or the purified water to the water discharge passage and the drain passage.

17. The water distribution device of claim 15, further comprising: a hot water channel having a side branching from the purified water channel; a hot water module disposed in the hot water channel and configured to heat purified water passing through the hot water channel; a cold water channel having one side branching from the purified water channel; as well as A cold water module is provided in the cold water channel and is configured to cool purified water passing through the cold water channel.

18. The water distributing device according to claim 1, further comprising a sensing channel that branches from the water supply channel and through which the raw water flows. in, The water quality measurement unit is configured to measure the water quality of the purified water in response to the purified water being introduced through the purified water passage, and is configured to measure the water quality of the raw water in response to the raw water being introduced through the sensing passage.

19. The water distribution device of claim 18, wherein: The water quality measurement unit is configured to measure the water quality of the purified water after performing a rinsing operation in which the purified water passes through the water quality measurement unit one or more times when measuring the water quality of the raw water.

20. The water distribution device of claim 18, further comprising: a switching valve configured to supply the raw water to the water supply passage or the sterilization passage; as well as A sensing valve is configured to open and close the sensing channel.

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