KR20170029249A - Drinking water supplying device and method for controlling the same - Google Patents

Drinking water supplying device and method for controlling the same Download PDF

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Publication number
KR20170029249A
KR20170029249A KR1020150126340A KR20150126340A KR20170029249A KR 20170029249 A KR20170029249 A KR 20170029249A KR 1020150126340 A KR1020150126340 A KR 1020150126340A KR 20150126340 A KR20150126340 A KR 20150126340A KR 20170029249 A KR20170029249 A KR 20170029249A
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KR
South Korea
Prior art keywords
water tank
hot water
temperature
water
drinking
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KR1020150126340A
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Korean (ko)
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KR101758283B1 (en
Inventor
정철민
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엘지전자 주식회사
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Priority to KR1020150126340A priority Critical patent/KR101758283B1/en
Publication of KR20170029249A publication Critical patent/KR20170029249A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B67OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67DDISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00Apparatus or devices for dispensing beverages on draught
    • B67D1/08Details
    • B67D1/0895Heating arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B67OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67DDISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00Apparatus or devices for dispensing beverages on draught
    • B67D1/08Details
    • B67D1/12Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B67OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67DDISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00Apparatus or devices for dispensing beverages on draught
    • B67D1/08Details
    • B67D1/12Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • B67D1/125Safety means, e.g. over-pressure valves

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  • Devices For Dispensing Beverages (AREA)

Abstract

The present invention relates to a drinking water supply apparatus and a method for controlling the same. The drinking water supply apparatus comprises: a drinking water supply device which discharges drinking water by pressure of water supplied by a water supply source; a hot water tank which has a heating unit for heating the water supplied by the water supply source; a temperature sensor which is installed in the hot water tank to sense the temperature of the water in the hot water tank; and a control unit which is formed to control the heating unit and the temperature sensor. Before the heating unit is operated, the control unit determines whether water is accommodated in the hot water tank based on the difference in value between a first temperature, sensed by the temperature sensor, and a second temperature sensed by the temperature sensor after operating the heating unit for a predetermined first time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drinking water supply device,

The present invention relates to a drinking water supply apparatus and a control method thereof, and it is possible to determine whether or not water exists in a hot water tank and a cold water tank based on a temperature value sensed by a temperature sensor, And a control method for the drinking water supply device capable of selectively driving a heater for making hot water.

Generally, a drinking water supply device is a device that supplies drinking water to a user, which the user can drink. Such a drinking water supply device may be formed as a unique device, or may be formed to form a part of a household appliance such as a refrigerator.

The drinking water supply device can not only supply the drinking water at room temperature but also cool or heat the drinking water flowing in the drinking water supply device and supply the user with cold water or hot water as needed.

The drinking water may be raw water supplied from ground water or water (water supply source), and raw water may be filtered by filtration means such as a filter.

The drinking water supply device includes a low water drinking water supply device for storing raw water or purified water in a water storage tank and then discharging drinking water stored in the water storage tank in response to a discharge instruction of a user, And may include a direct drinking water supply device for supplying the drinking water.

In the case of the direct drinking water supply device, a cold water tank and a hot water tank may be provided to provide cold water and hot water. The drinking water, which is contained in the cold water tank and the hot water tank through the water pressure of the drinking water supplied to the cold water tank and the hot water tank Can be discharged to the outside.

Therefore, the cold water tank and the hot water tank should be hermetically sealed except for the inlet and outlet of the drinking water due to the nature of the direct drinking water supply device.

The cold water tank is formed to cool the drinking water through heat exchange between the refrigerant flowing into the evaporator and the drinking water in the cold water tank. The hot water tank is heated by driving a heating unit (for example, a heater) .

In this case, when the refrigerant flows in a state where there is no drinking water (i.e., water) in the cold water tank, the liquid refrigerant flows into the pump for flowing the refrigerant, thereby damaging the pump or shortening the lifetime of the pump have.

In addition, when the refrigerant flows in a state in which there is no drinking water in the hot water tank, the heating unit may overheat and damage the hot water tank. In particular, when the heating unit is equipped with a safety device, the heating of the heating unit may cause the entire product to stop driving.

Therefore, it is necessary to judge whether or not the drinking water is contained in the hot water tank and the cold water tank before driving the heating part and the cooling part.

Particularly, it is often necessary to judge whether or not the drinking water is contained in the hot water tank and the cold water tank at the time of initial installation of the drinking water supply device or at the time of reapplying the power according to the moving installation.

In the case of the conventional direct drinking water supply device, whether or not the drinking water is contained in the hot water tank and the cold water tank is judged through the level detected by the water level sensor.

However, in the case of the water level sensor, there is a part unsuitable for application to the hot water tank and the cold water tank of the direct drinking water supply device as a sensor in a direct contact with water.

For example, when the water level sensor is installed in the hot water tank and the cold water tank of the direct drinking water supply device, the portion where the water level sensor is installed is not completely sealed, so that the drinking water contained in the hot water tank and the cold water tank may leak.

SUMMARY OF THE INVENTION The present invention provides a drinking water supply device and a control method thereof that can determine whether drinking water is contained in a cold water tank and a hot water tank while maintaining a closed state of a cold water tank and a hot water tank .

Another object of the present invention is to provide a drinking water supply device and a control method thereof, which can prevent damage to a pump for supplying a refrigerant to an evaporator provided in a cold water tank and increase the service life thereof.

Further, the present invention provides a drinking water supply device and a control method thereof, which can prevent damage to the hot water tank and prevent the driving of the drinking water supply device from being stopped unintentionally, by preventing overheating of the heating part provided in the hot water tank .

The present invention provides a drinking water supply device for discharging drinking water by water pressure supplied from a water supply source, comprising: a hot water tank having a heating unit for heating water supplied from a water supply source; A temperature sensor installed in the hot water tank to sense the temperature of water in the hot water tank; And a controller configured to control the heating unit and the temperature sensing sensor, wherein the controller drives the first temperature sensed by the temperature sensing sensor and the heating unit for a predetermined first time before the heating unit is driven And judges whether or not water is contained in the hot water tank based on a difference value of the second temperature detected by the temperature sensor.

At this time, the second temperature may be a temperature value detected through the temperature sensor after the heating unit is driven for the first time and a predetermined second time has elapsed.

In addition, when the difference is smaller than a predetermined reference value, the control unit may determine that water is contained in the hot water tank, and selectively control the heating unit based on the predetermined hot water temperature.

When the difference value is equal to or greater than a preset reference value, the control unit determines that water is not contained in the hot water tank, stops driving the heating unit and the cooling unit, and the control unit includes purified water, cold water, It is possible to selectively drive the heating unit based on the presence or absence of the discharge signal of the drinking water.

The drinking water supply device according to the present invention further comprises a supply valve provided on the supply flow path from the water supply source to the hot water tank and configured to be opened according to the discharge signal of the drinking water, When the reception is terminated after the signal is received, the heating unit may be driven again for a first time period, and the difference value may be determined.

The determination of the difference value by the control unit and the determination of the discharge signal of the drinking water may be repeatedly performed until the difference value becomes less than the reference value.

The drinking water supply device according to the present invention further includes a cold water tank having a cooling unit for cooling water supplied from the water supply source, wherein the internal volume of the cold water tank is larger than the internal volume of the hot water tank, The signal may be a cold water discharge signal.

In addition, the hot water tank is formed in a closed structure, and the hot water tank can be kept in a full state by driving the supply valve in normal operation.

The control unit may further include a power supply unit configured to supply power to the drinking water supply apparatus, wherein the control unit calculates the difference value when the power supply unit is turned on again after the power supply unit is turned off, It is possible to judge whether or not the water is contained in the water.

In addition, the hot water tank is provided with a mounting portion formed to insert the temperature sensor, and the mounting portion is formed in a shape corresponding to the temperature sensor, and the water contained in the hot water tank and the temperature sensor are not in contact with each other .

According to another aspect of the present invention, there is provided a control method of a drinking water supply device formed to selectively supply drinking water including purified water and hot water by a water pressure of water supplied from a water supply source, the method comprising: Measuring a first temperature in the hot water tank; A second temperature measuring step of sensing a second temperature in the hot water tank after driving the heating unit provided in the hot water tank for a predetermined first time; And a first judging step of judging whether or not water is contained in the hot water tank based on the difference between the first temperature and the second temperature by the control unit do.

The second temperature measured in the second temperature measuring step may be a temperature value after the heating part is driven for the first time and a predetermined second time has elapsed.

Further, in the first determining step, it is determined that water is contained in the hot water tank when the difference value is less than the predetermined reference value, and the heating unit in the hot water tank is selectively driven based on the predetermined hot water temperature.

In the first determining step, it is determined that the water is not contained in the hot water tank when the difference value is equal to or greater than the preset reference value, and the driving of the heating unit in the hot water tank may be stopped.

According to another aspect of the present invention, there is provided a method for controlling a drinking water supply device, the method comprising: a second determination step of determining whether a discharge signal of drinking water is received in the controller and whether the reception is completed;

The first temperature measurement step, the second temperature measurement step, and the first determination step may be performed again if it is determined in the second determination step that the discharge signal of the drinking water has been received and terminated.

In addition, the first temperature measurement step, the second temperature measurement step, the first determination step, and the second determination step may be repeated until the difference value becomes less than the reference value.

In the first temperature measurement step and the second temperature measurement step, the first temperature and the second temperature may be detected through a temperature sensor installed in the hot water tank in a non-contact manner with water contained in the hot water tank have.

According to the present invention, it is possible to provide a drinking water supply device and a control method thereof, which can determine whether or not the drinking water is contained in the cold water tank and the hot water tank while maintaining the closed state of the cold water tank and the hot water tank.

In addition, according to the present invention, it is possible to provide a drinking water supply device and a control method thereof, which can prevent damage to a pump for supplying a refrigerant to an evaporator provided in a cold water tank and increase the service life thereof.

According to the present invention, there is provided a drinking water supply device capable of preventing damage to the hot water tank and preventing the driving of the drinking water supply device from being stopped unintentionally, in order to prevent overheating of the heating part provided in the hot water tank, Can be provided.

1 is an external perspective view of a drinking water supply apparatus according to an embodiment of the present invention.
2 is a conceptual view showing a structure and piping of a drinking water supply device according to an embodiment of the present invention.
3 is a view showing a cold water tank provided in the drinking water supply device.
4 is a view showing a hot water tank provided in the drinking water supply device.
5 is a block diagram showing a connection relationship of main components provided in the drinking water supply device.
6 is a flowchart showing a control method of the drinking water supply apparatus according to the embodiment of the present invention.

Hereinafter, a drinking water supply apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and the shape of each constituent member shown may be exaggerated or reduced.

Hereinafter, in defining the terms, water before passing through the filter section is referred to as raw water, raw water filtered through the filter is referred to as a constant, water cooled in a cold water tank is referred to as cold water, .

Also, for convenience of explanation, the raw water, the purified water, the cold water, and the hot water may all be referred to as drinking water or water.

Further, the front end and the rear end may refer to the upstream side and the downstream side with respect to the forward flow direction of the fluid. In this case, the forward flow direction refers to a direction in which the drinking water flows in the drinking water supply apparatus during the discharge of the drinking water out of the drinking water supply apparatus.

1 is an external perspective view of a drinking water supply apparatus according to an embodiment of the present invention.

1, the drinking water supply apparatus 1 includes a cabinet 2 and a dispenser 3 forming an outer appearance, and the dispenser 3 may mean a space where a user is supplied with application water. Accordingly, the dispenser 3 may be formed generally in front of the cabinet 2. [

The dispenser 3 may be provided with a cock 7 through which drinking water is discharged. In addition, the dispenser 3 may be provided with a real-time control input unit 4 and a quantitative control input unit 5 for operating the discharge of drinking water.

The real-time control input unit 4 may be provided in the form of a lever that is pushed or operated by a user. The quantitative control input unit 5 may be a button or a touch input unit operated by a user .

The user can input a command through the quantitative control input unit 5 and manipulate the drinking water supply device 1 to be driven in the quantitative control mode. In the quantitative control mode, the drinking water supply device (1) can be controlled so that a predetermined amount of drinking water is discharged through the cock (7).

Alternatively, the user does not input a command through the quantitative control input unit 5

And the lever corresponding to the real-time control input unit 4 can be pushed or pulled. For example

The user pushes the lever in a state where the cup C is disposed under the cock 7,

The drinking water discharged from the cock 7 can be contained in the cup C.

At this time, the drinking water supply device 1 can be driven in a real-time control mode. In the real-time control mode, the drinking water supply device 1 can be controlled so that the drinking water is discharged through the cock 7 based on a time when the user pushes or pulls the lever.

That is, when the user does not input a command through the quantitative control input unit 5

, The drinking water supply device (1) can be driven in a real time control mode.

The drinking water supply device 1 may further include a display unit 6. The display unit 6 may be configured to display information on drinking water including a cold water temperature and a hot water temperature.

The display unit 6 may be formed to be touch-recognizable. Accordingly, the user can select at least one of purified water, hot water, and cold water through the touch of the display unit 6.

1 shows two corks 7 including one cork for discharging cold water and purified water and another cork for discharging hot water, but three corks 7 for discharging purified water, hot water and cold water, respectively, It is also possible to provide two corks. Alternatively, it is also possible to have only one cock for both cold water, purified water and hot water.

Hereinafter, the construction and piping of the drinking water supply device according to the embodiment of the present invention will be described with reference to other drawings.

3 is a view showing a cold water tank provided in the drinking water supply apparatus, and FIG. 4 is a schematic view showing the structure of the hot water tank provided in the drinking water supply apparatus, Fig.

2 to 4, a drinking water supply device 1 according to an embodiment of the present invention is formed in the form of a direct drinking water supply device formed to discharge drinking water based on the water pressure of water supplied from the water supply source 10 .

At this time, the water pressure of the water supplied from the water supply source 10 may be the water pressure of the water coming out of the water supply source 10 or the water pressure of the water supplied from the water supply source 10, have.

The drinking water supply apparatus 1 according to the embodiment of the present invention includes a hot water tank 60 having a heating unit 61 for heating water supplied from a water supply source 10 and a water supply unit 60 for supplying water supplied from the water supply source 10 And a cold water tank 70 having a cooling part 71 for cooling.

The water supplied from the water supply source 10 can be supplied to the hot water tank 60 and the cold water tank 70 through the supply flow path 50.

The supply passage 50 may be provided with one or more filters 30 and water supplied from the water supply source 10 may be purified through the filter 30.

In addition, the supply passage 50 may be provided with a supply valve 40 on the downstream side (i.e., the downstream end) of the filter 30. The supply valve 40 may be selectively opened based on a user's drinking water discharge signal.

The supply passage 50 may be branched from the rear end of the supply valve 40 to a first flow passage 51 and a second flow passage 52. The first flow path 51 may be formed to face the hot water tank 60 and the second flow path 52 may be formed to face the cold water tank 70.

Therefore, the drinking water flowing along the first flow path 51 branched from the supply flow path 50 can be introduced into the hot water tank 60 through the first inlet portion 62 of the hot water tank 60. At this time, the first inlet portion 62 may be formed as a first inlet hole communicated with the first flow path 51.

The second flow path 52 may be branched into a third flow path 53 directed toward the cold water tank 70 and a fourth flow path 54 directed toward the cock 7 described above.

Therefore, the drinking water flowing along the third flow path 53 branched from the second flow path 52 may flow into the cold water tank 70 through the second inlet portion 72 of the cold water tank 70. At this time, the second inlet portion 72 may be formed as a second inlet hole.

In addition, the drinking water flowing along the fourth flow path 54 branched from the second flow path 52 can be discharged through the cock 7 in a purified state at normal temperature according to the user's constant discharge signal.

The hot water tank 60 includes a first inlet portion 62 and a first outlet portion 63. When the drinking water (i.e., hot water) flows through the first inlet portion 62, (I.e., hot water) is discharged through the drain pipe 63. At this time, the first discharge portion 63 may be formed as a first discharge hole.

That is, the hot water tank 60 is provided with the first inlet portion 62 and the second inlet portion 62 so that the drinking water is discharged through the first discharge portion 63 in accordance with the inflow pressure of the drinking water through the first inlet portion 62, All the portions except for the first discharge portion 63 may be formed to be sealed.

The first inlet portion 62 may be formed on the lower surface of the hot water tank 60 and the first outlet portion 63 may be formed on the upper surface of the hot water tank 60. This is to discharge the drinking water located in the upper part of the hot water tank 60 in accordance with the hot water discharge signal of the user in consideration of the property of the hot water to be raised.

The heating unit 61 for heating the drinking water in the hot water tank 60 may be provided in the form of a heating coil in the hot water tank 60 or may be represented by a heater. The heating unit 61 may be controlled by a control unit C to be described later so as to selectively heat the drinking water in the hot water tank 60.

The cold water tank 70 includes a second inlet portion 72 and a second outlet portion 73. When the drinking water (i.e., hot water) flows through the second inlet portion 72, (I.e., cold water) may be discharged through the drain pipe 73.

That is, the cold water tank 70 is disposed in the second inlet portion 72 and the second inlet portion 72 so that the drinking water is discharged through the second outlet portion 73 in accordance with the inflow pressure of the drinking water through the second inlet portion 72. [ The portion except for the second discharge portion 73 may be formed to be sealed.

At this time, the second inlet portion 72 and the second outlet portion 73 may all be formed on the upper surface of the cold water tank 70. At this time, the second discharge portion 73 may include a discharge pipe 73 'extending to approach the lower surface of the cold water tank 70. This is to discharge the drinking water located in the lower portion of the cold water tank 70 in accordance with the cold water discharge signal of the user in consideration of the property of the hot water to rise and the property of the cold water to descend. The discharge pipe 73 'may communicate with the coke 7 through a fifth flow path 55 to be described later.

Alternatively, the second discharge portion 73 may be formed on the lower surface of the cold water tank 70. In this case, the discharge tube 73 'will be unnecessary.

The cooling unit 71 for heating the drinking water in the cold water tank 70 may be formed in the form of an evaporator configured to exchange heat with the drinking water in the cold water tank 70. That is, in order to cool the drinking water in the cold water tank 70, the drinking water supply device 1 may further include a compressor 74, a condenser 75 and an expansion valve 76.

At this time, the refrigerant is circulated through the compressor 74, the condenser 75, the expansion valve 76 and the cooling unit 71 through the driving of the compressor 74, and the cooling unit 71, The drinking water in the cold water tank 70 can be cooled through the heat exchange between the drinking water in the cold water tank 70.

The cooling unit 71 is disposed inside the cold water tank 70 so that water (drinking water) in the cold water tank 70 can be heat-exchanged with refrigerant in the cooling unit 71.

For example, the cooling unit 71 may be disposed in the form of a refrigerant pipe disposed in the cold water tank 70. For example, the cooling unit 71 may be wound in the cold water tank 70 several times in a coil form. Therefore, while the refrigerant evaporates in the cooling section 71, the refrigerant and the drinking water in the cold water tank 70 can exchange heat with each other.

The water supplied from the water supply source 10 passes through the supply passage 50, the second flow passage 52 and the fourth flow passage 54 sequentially through the coke 7 Can be discharged.

When the cold water discharge signal is input by the user, the water supplied from the water supply source 10 flows through the supply passage 50, the second passage 52, and the third passage 53 sequentially to the cold water tank 70 . At this time, the water (i.e., cold water) in the cold water tank 70 is discharged through the coke 7 via the second discharge portion 73 and the fifth flow path 55 connected to the second discharge portion 73 .

When the hot water discharge signal is inputted by the user, the water supplied from the water supply source 10 is supplied into the hot water tank 60 via the supply flow path 50 and the first flow path 51 in sequence. At this time, water (i.e., hot water) in the hot water tank 70 is discharged through the coke 7 via the first discharge portion 63 and the sixth flow path 56 connected to the first discharge portion 63 .

At this time, discharge valves 91, 92, and 93 may be provided in the fourth flow path 54, the fifth flow path 55, and the sixth flow path 56, respectively. On the basis of the user's drinking water discharge signal, the discharge valves 91, 92 and 93 can be controlled to be selectively opened and closed by a control part C to be described later. The discharge valves 91, 92 and 93 may be solenoid valves.

The coke 7 shown in Fig. 1 can be provided with three cocks at the discharge end of the fourth flow path 54, the fifth flow path 55 and the sixth flow path 56, respectively. Alternatively, one end of the fourth flow path 54, the fifth flow path 55, and the discharge end of the sixth flow path 56 may be merged into one coke. It is also possible that one cock is provided at the discharge end of the fourth flow path 54 and the fifth flow path 55 for discharging the cold water and purified water and another one at the discharge end for discharging hot water Do.

The hot water tank (60) and the cold water tank (70) may be respectively connected to ventilation passages (81, 82) for discharging air inside. The air flow paths 81 and 82 may include a first air flow path 81 connected to the hot water tank 60 and a second air flow path 82 connected to the cold water tank 70.

At this time, the first ventilation passage 81 may be provided with the first ventilation valve 83 and the second ventilation passage 82 may be provided with the second ventilation valve 84. The first ventilation valve 83 and the second ventilation valve 84 may be opened when the water is filled in the hot water tank 60 and the cold water tank 70, respectively.

That is, at the initial installation of the drinking water supply device 1, air in the hot water tank 60 and the cold water tank 70 is discharged to the outside through the ventilation flow paths 81 and 82, ) And the cold water tank (70).

When the first ventilation passage 81 and the second ventilation passage 82 are connected to the hot water tank 60 and the cold water tank 70, the hot water tank 60 and the cold water tank 70 The portion where the first ventilation passage 81 and the second ventilation passage 82 are connected may be excluded from the sealing structure.

That is, the hot water tank 60 may be formed so that all the portions except the connecting portions of the first inlet portion 62, the first outlet portion 63, and the first air flow passage 81 are sealed.

In addition, the cold water tank 70 may be formed so that all the portions except for the connecting portions of the second inlet portion 72, the second outlet portion 73, and the second air flow passage 82 are sealed.

Temperature sensing sensors 65 and 75 for sensing the temperature of the water supplied into the hot water tank 60 and the cold water tank 70 are respectively installed in the hot water tank 60 and the cold water tank 70 . The temperature sensing sensors 65 and 75 may include a first temperature sensing sensor 65 installed in the hot water tank 60 and a second temperature sensing sensor 75 installed in the cold water tank 70 .

The hot water tank 60 and the cold water tank 70 may be provided with mounting portions 64 and 74 for installing the temperature sensing sensors 65 and 75, respectively. The installation portions 64 and 74 may include a first installation portion 64 provided in the hot water tank 60 and a second installation portion 70 provided in the cold water tank 70.

At this time, the mounting portions 64 and 74 may be recessed from the outside of the hot water tank 60 and the cold water tank 70 to the inside of the hot water tank 60 and the cold water tank 70 . That is, the mounting portions 64 and 74 are formed such that a part of the outer circumferential surfaces of the hot water tank 60 and the cold water tank 70 is recessed toward the inside of the hot water tank 60 and the cold water tank 70 .

For example, the first installation part 64 may be formed by recessing a part of the upper surface of the hot water tank 60 downwardly. The first temperature sensor 65 may be inserted into the first mounting portion 64. Therefore, the first temperature sensor 65 may be configured to sense the temperature of the water in the hot water tank 60 without contacting the water in the hot water tank 60 directly.

That is, the hot water tank 60 is provided with a first mounting portion 64 for inserting the first temperature sensing sensor 65, and the first mounting portion 64 is connected to the first temperature sensing sensor 65 As shown in Fig.

In addition, the second installation part 74 may be formed by recessing a part of the upper surface of the cold water tank 70 downwardly. The second temperature sensor 75 may be inserted into the second mounting portion 74. Accordingly, the second temperature sensor 75 may be configured to sense the temperature of the water in the cold water tank 70 without contacting the water in the cold water tank 70 directly.

That is, the cold water tank 70 is provided with a second mounting portion 74 formed to insert the second temperature sensing sensor 75, and the second mounting portion 74 includes the second temperature sensing sensor 75 As shown in Fig.

The water contained in the hot water tank 60 and the first temperature sensor 65 are not in contact with each other and the water contained in the cold water tank 70 and the water The second temperature sensor 75 may be in a non-contact state. Therefore, the water leakage prevention effect can be obtained as compared with the case where a water level sensor in a manner of directly contacting water in the hot water tank 60 and the cold water tank 70 is provided.

Hereinafter, the main components controlled by the controller of the drinking water supply apparatus according to the embodiment of the present invention and the control of the main components by the controller will be described with reference to other drawings.

5 is a block diagram showing a connection relationship of main components provided in the drinking water supply device.

5, the drinking water supply device 1 according to the embodiment of the present invention includes the supply valve 40, the discharge valves 91, 92, 93, the heating unit 61, and the cooling unit 71 And a control unit (C) configured to control the control unit.

That is, the controller C may be electrically connected to the supply valve 40, the discharge valves 91, 92, 93, the heating unit 61, and the cooling unit 71.

The controller C is electrically connected to the real-time control input unit 4, the quantitative control input unit 5, the display unit 6, the first temperature sensor 65 and the second temperature sensor 75, Can be connected.

For example, based on input signals input through at least one of the real-time control input 4, the quantitative control input 5, and the display 6, the controller C controls the supply valve 40 and / Cold water and hot water can be selectively discharged through the cock 7 by controlling the discharge valves 91, 92,

The controller C controls the heating unit 61 so that the water in the hot water tank 60 and the water in the cold water tank 70 are kept within a predetermined temperature range, And the cooling unit 71 can be controlled.

The controller C controls the temperature of the heating unit 61 and the cooling unit 71 based on the temperature detected by the first temperature sensor 65 and the second temperature sensor 75, Driving can be controlled.

Here, the normal operation may mean the operation of the drinking water supply device 1 in a state where water is fully charged in the hot water tank 60 and the cold water tank 70. The driving of the heating part 61 means the application of power to the heating coil constituting the heating part 61 and the driving of the cooling part 71 causes the cooling part 71 to flow The compressor 74 may be replaced with a compressor.

On the other hand, when the refrigerant flows in the state that no water is present in the hot water tank 60, the heating unit 61 is overheated and the hot water tank 60 may be damaged. Particularly, when a safety device (not shown) is installed in the heating part 61, if the heating part 61 is overheated, the entire product may be stopped.

When the refrigerant flows into the cooling unit 71 without water in the cold water tank 70, the liquid refrigerant flows into the compressor 74 for flowing the refrigerant, and the compressor 74 is damaged Or the life of the compressor 74 may be shortened.

Therefore, it is necessary to judge whether or not water (that is, drinking water) is accommodated in the hot water tank 60 and the cold water tank 70 before driving the heating part 61 and the cooling part 71.

According to the embodiment of the present invention, it is possible to judge whether or not water is contained in the hot water tank 60 and the cold water tank 70 by using the above-described temperature sensing sensors 65 and 75 without the water level sensor .

The controller C controls the first temperature T1 sensed by the first temperature sensor 65 and the second temperature T1 sensed by the heating unit 61 before the heating unit 61 is driven, (T2-T1) of the second temperature (T2) sensed by the first temperature sensing sensor (65) after driving the hot water tank (60) and the cold water tank It is possible to judge whether or not water is contained in the water.

For example, the controller C may determine whether water is stored in the hot water tank 60 based on the difference T2-T1. When there is water in the hot water tank 60, the difference (T2-T1) can be smaller than in the case where there is no water in the hot water tank 60.

Therefore, even if the water level sensor 60 is not separately provided in the hot water tank 60 and the cold water tank 70, the temperature of the hot water tank 60 and the temperature of the hot water tank 70 Whether or not water is contained in at least one of the cold water tanks 70 can be judged by the control portion C. [

Also, since the price of the temperature sensor is lower than that of the water level sensor, the price of the whole product can be lowered when the temperature sensor is used without using the water level sensor.

At this time, the second temperature T2 may be a temperature value detected through the first temperature sensor 65 after the heating unit 61 is driven for the first time and a predetermined second time has elapsed have.

The second time may be a time sufficient for the temperature of the water contained in the hot water tank 60 to achieve a thermal equilibrium. Accordingly, the second temperature T2 sensed by the first temperature sensor 65 after the second time period may be a temperature in which the water in the hot water tank 60 is thermally balanced.

For example, the first time may be 15 seconds to 25 seconds, the second time may be 1 minute to 3 minutes, and the reference value may be 2 to 4. Preferably, the first time is 20 seconds, the second time is 2 minutes, and the reference value may be 3.

The control unit C compares the difference value T2-T1 with a preset reference value Ts to determine whether water is contained in at least one of the hot water tank 60 and the cold water tank 70 Can be judged.

Specifically, when the difference T2-T1 is smaller than the reference value Ts, the controller C may determine that water is contained in the hot water tank 60 and the cold water tank 70 . At this time, the controller C may selectively control the heating unit 61 and the cooling unit 71 based on the predetermined cold water temperature and the hot water temperature. As described above, the control of the cooling unit 71 may mean the control of the compressor 74 that is configured to supply the coolant toward the cooling unit 71. [

That is, even if the heating unit 61 and the cooling unit 71 are driven in the normal state in which the water is received (or fully charged) in the hot water tank 60 and the cold water tank 70, And the compressor 74 are not damaged. Therefore, the control unit C can control the heating unit 61 and the cooling unit 71 on / off based on the predetermined cold water temperature and the hot water temperature.

Alternatively, if the difference (T2-T1) is equal to or greater than the reference value Ts, the controller C determines that water is not contained in at least one of the hot water tank 60 and the cold water tank 70 The driving of the heating unit 61 and the cooling unit 71 can be stopped.

At this time, the controller C may selectively drive at least one of the heating unit 61 and the cooling unit 71 based on the presence or absence of the discharge signal of drinking water including purified water, cold water, and hot water. As described above, the driving of the cooling unit 71 may mean the driving of the compressor 74 configured to supply the coolant toward the cooling unit 71.

That is, in the case of an abnormal state in which water is not contained (or fully charged) in the hot water tank 60 and the cold water tank 70, the hot water The tank 60 and the compressor 74 may be damaged. Therefore, the control unit C temporarily stops the driving of the heating unit 61 and the cooling unit 71.

The controller C can open the supply valve 40 in accordance with the discharge signal of the drinking water containing purified water, cold water and hot water. The controller 40 can open the supply valve 40, Water may be supplied into the cold water tank 70.

Accordingly, when the discharge signal of the drinking water containing purified water, cold water and hot water is received, water can be supplied into the hot water tank 60 and the cold water tank 70 for the duration of the discharge signal.

More specifically, the control unit C drives the heating unit 61 again for the first time when the reception of the drinking water is finished after the discharge signal of the drinking water is received, and then the difference (T2-T1) It can be judged.

In this case also, when the difference T2-T1 is equal to or greater than the reference value Ts, the controller C determines that water is not contained in at least one of the hot water tank 60 and the cold water tank 70 And stop the driving of the heating unit 61 and the cooling unit 71.

The determination of the difference value T2-T1 by the controller C and the determination of the discharge signal of the drinking water are repeatedly performed until the difference value T2-T1 becomes less than the reference value Ts .

That is, when the difference T2-T1 is less than the reference value Ts, the controller C determines that water is contained in the hot water tank 60 and the cold water tank 70, The heating unit 61 and the cooling unit 71 can be selectively driven.

Meanwhile, the internal volume of the cold water tank 70 may be larger than the internal volume of the hot water tank 60. Since the supply passage 50 is branched into the cold water tank 70 and the hot water tank 60, when the inside of the cold water tank 70 is filled with water, the inside of the hot water tank 60 is also filled with water Can be considered.

In this case, the discharge signal of the drinking water determined by the controller (C) may be a hot water discharge signal or a cold water discharge signal. For example, the discharge signal of the drinking water may be a hot water discharge signal. This is because, when cold water is discharged through the cock 7 in accordance with the cold water discharge signal, the cold water tank 70 and the hot water tank 60 can all be considered to be filled with water.

On the other hand, when water is supplied to the hot water tank 60 and the cold water tank 70 when the water is supplied to the drinking water supply device 1 or when the drinking water supply device 1 is moved, It is necessary to judge whether or not it is.

 The drinking water supply device (1) according to the present invention may further comprise a power supply part (P) configured to supply power to the drinking water supply device (1). The power supply unit P may also be electrically connected to the controller C.

At this time, when the power supply unit P is turned on again after the power supply unit P is turned off, the controller C calculates the difference value T2-T1, and based on the difference value T2-T1, 60) and the cold water tank (70).

According to the drinking water supply device 1 of the present invention, whether or not the drinking water is contained in the hot water tank 60 and the cold water tank 70 is detected by the first temperature sensor 65 provided in the hot water tank 60, Based on the sensed temperature value.

Also, according to the present invention, it is possible to know whether or not the water in the hot water tank 60 and the cold water tank 70 is accommodated by using a temperature sensor of non-contact type with water even if there is no water level sensor in a direct contact with water , The risk of leakage due to the installation of the water level sensor can be reduced.

Hereinafter, a control method of the drinking water supply apparatus according to the embodiment of the present invention will be described with reference to other drawings.

6 is a flowchart showing a control method of the drinking water supply apparatus according to the embodiment of the present invention.

6, it is obvious that the configuration of the drinking water supply device 1 described with reference to Figs. 1 to 5 can be equally applied to the control method of the drinking water supply device.

Hereinafter, with reference to FIG. 6, a control method of a drinking water supply apparatus formed to selectively supply drinking water including purified water, hot water, and cold water by water pressure of water supplied from a water supply source will be described.

The control method of the drinking water supply apparatus according to the embodiment of the present invention includes a power supply step S10 for supplying power to the drinking water supply apparatus 1, a first temperature T1 for sensing a first temperature T1 in the hot water tank 60, A second temperature measurement step S30 in which the second temperature T2 in the hot water tank 60 is sensed after the heating unit 61 provided in the hot water tank 60 is driven for a first time, And whether the water is contained in at least one of the hot water tank 60 and the cold water tank 70 based on the difference (T2-T1) between the first temperature T1 and the second temperature T2 And a first determination step (S40) as determined by the control unit (C).

In the power applying step S10, power can be supplied to the drinking water supply device 1 through the power supply part P so that the drinking water supply device 1 in the OFF state is turned ON.

In the first temperature measurement step S20, the first temperature inside the hot water tank 60 may be measured. At this time, the first temperature (1) may be the temperature of the water when the water is contained in the hot water tank 60, and when the water is not contained in the hot water tank 60, It can be the temperature of the inside air.

In the second temperature measurement step S30, the heating unit 61 provided in the hot water tank 60 is driven for a first time period, and the second temperature T2 after raising the temperature in the hot water tank 60 is increased Can be detected. That is, the second temperature T2 may be higher than the first temperature T1. The second temperature T2 may be the temperature of the water when the water is received in the hot water tank 60 and may be the temperature of the hot water tank 60 when the water is not contained in the hot water tank 60. [ It can be the temperature of the inside air.

On the other hand, the second temperature T2 measured in the second temperature measuring step S30 may be a temperature value after the heating unit 61 is driven for the first time and a predetermined second time has elapsed.

The second time may be a time sufficient for the inside of the hot water tank 60 to be in thermal equilibrium after the heating unit 61 is heated for the first time. That is, the second time is a time for temperature equilibrium in a portion relatively close to the heating portion 61 and relatively farther in the hot water tank 60.

In the first determining step S40, at least one of the hot water tank 60 and the cold water tank 70, based on the difference (T2-T1) between the first temperature T1 and the second temperature T2, It can be judged by the control part C whether or not the water is contained in one.

For example, when the water is not contained in the hot water tank 60, the difference (T2-T1) may be larger than when the water is contained in the hot water tank 60.

Specifically, when the difference (T2-T1) is less than the preset reference value (Ts) in the first rupturing step (S40), it is determined that water is contained in the hot water tank (60) and the cold water tank (70) (C). ≪ / RTI >

In this case, the heating unit 61 in the hot water tank 60 and the cooling unit 71 in the cold water tank 70 can be selectively driven (S50) based on the predetermined cold water temperature and the hot water temperature.

Alternatively, in the first determining step S40, when the difference value T2-T1 is equal to or greater than the preset reference value Ts, water is received in at least one of the hot water tank 60 and the cold water tank 70 It can be judged by the control section (C).

In this case, the heating unit 60 of the hot water tank 60 and the cooling unit 71 of the water tank 70 can be stopped by the control unit C (S60).

This is because when the heating unit 61 and the cooling unit 71 are driven in a state where no water is contained in the hot water tank 60 and the cold water tank 70, the hot water tank 60 and the compressor 74 ) May be damaged.

Meanwhile, the control method of the drinking water supply apparatus according to the embodiment of the present invention may further include a second determining step (S70) in which it is determined whether or not the discharge signal of the drinking water is received and the reception is terminated in the controller (C) .

The second determination step S70 may be performed after the step S60 of stopping the driving of the heating unit 61 and the cooling unit 71. [

Specifically, in the second determination step (S70), the control unit (C) can determine whether or not the discharge signal of the drinking water has been received and the discharge signal has been received. Water can be supplied to the hot water tank 60 and the cold water tank 70 through the opening of the supply valve 40 when the discharge signal of the drinking water is received by the control unit C. [

If it is determined in the second determination step S70 that the discharge signal of the drinking water has been received and terminated, the first temperature measurement step S20, the second temperature measurement step S30, and the first determination step S40 ) Can be performed again.

That is, while the first temperature measurement step S20, the second temperature measurement step S30 and the first determination step S40 are performed again, the water is received in the hot water tank 60 and the cold water tank 70 The control unit C can judge whether or not it has been set.

In addition, according to the present invention, the first temperature measurement step (S20), the second temperature measurement step (S30), the first temperature measurement step (S30), and the second temperature measurement step The determination step S40 and the second determination step S70 may be repeated.

In the process of repeating the first temperature measurement step S20, the second temperature measurement step S30, the first determination step S40, and the second determination step S70, And the cooling section 71 can be maintained in a state in which the driving section is stopped by the control section C. [

Meanwhile, the internal volume of the cold water tank 70 may be larger than the internal volume of the hot water tank 60. In this case, in the second determination step S70, the discharge signal of the drinking water becomes the discharge signal of the cold water .

Water may be supplied to at least one of the cold water tank 70 and the hot water tank 60 from the water supply source 10 through the opening of the supply valve 40 when there is the discharge signal of the cold water.

When the cold water is discharged through the cock 7 in accordance with the cold water discharge signal, it can be seen that water is fully charged in the cold water tank 70. Further, if the water is fully charged in the cold water tank 70 having a relatively large internal volume, the water can be regarded as being fully charged in the hot water tank 60 as well.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, The present invention may be modified in various ways. Therefore, modifications of the embodiments of the present invention will not depart from the scope of the present invention.

10 Water source 20 Pressure reducing valve 30 Filter
40 Supply valve 50 Supply channel 60 Hot water tank
61 heating section 65 first temperature detecting sensor 70 cold water tank
71 Cooling section 75 Second temperature sensor

Claims (18)

A drinking water supply device for discharging drinking water by water pressure of water supplied from a water supply source,
A hot water tank having a heating unit for heating water supplied from a water supply source;
A temperature sensor installed in the hot water tank to sense the temperature of water in the hot water tank; And
And a control unit configured to control the heating unit and the temperature sensing sensor,
Wherein the control unit controls the heating unit based on a first temperature sensed by the temperature sensing sensor and a second temperature sensed by the temperature sensing sensor after driving the heating unit for a predetermined first time before the heating unit is driven, And judges whether or not water is contained in the hot water tank.
The method according to claim 1,
Wherein the second temperature is a temperature value sensed by the temperature sensor after the heating unit is driven for a first time and a predetermined second time has elapsed.
The method according to claim 1,
If the difference value is smaller than the preset reference value,
Wherein the control unit determines that water is contained in the hot water tank and selectively controls the heating unit based on the predetermined hot water temperature.
The method according to claim 1,
When the difference value is equal to or greater than a preset reference value,
Wherein the control unit determines that no water is contained in the hot water tank, stops driving the heating unit and the cooling unit,
Wherein the control unit selectively drives the heating unit based on the presence or absence of a discharge signal of drinking water including purified water, cold water, and hot water.
5. The method of claim 4,
Further comprising a supply valve provided on the supply flow path from the water supply source to the hot water tank and configured to be opened according to a discharge signal of the drinking water,
Wherein the control unit drives the heating unit again for a first time when the reception is finished after the discharge signal of the drinking water is received, and then determines the difference value.
6. The method of claim 5,
Wherein the determination of the difference value by the control unit and the determination of the discharge signal of the drinking water are repeatedly performed until the difference value becomes less than the reference value.
6. The method of claim 5,
Further comprising a cold water tank having a cooling portion for cooling water supplied from a water supply source,
The inner volume of the cold water tank is larger than the inner volume of the hot water tank,
Wherein the discharge signal of the drinking water is a cold water discharge signal.
The method according to claim 1,
Wherein the hot water tank is formed in a hermetically sealed structure and the hot water tank is kept in a full state by driving the supply valve during normal operation.
The method according to claim 1,
Further comprising a power supply unit configured to supply power to the drinking water supply apparatus,
Wherein the control unit calculates the difference value when the power supply unit is turned on again after the power supply unit is turned off and determines whether or not water is contained in the hot water tank based on the difference value.
The method according to claim 1,
The hot water tank is provided with a mounting portion formed to insert the temperature sensor, and the mounting portion is formed in a shape corresponding to the temperature sensor,
Wherein the water contained in the hot water tank and the temperature sensor are not in contact with each other.
A control method of a drinking water supply device formed to selectively supply drinking water including purified water and hot water by a water pressure of water supplied from a water supply source,
A power supply step of supplying power to the drinking water supply device;
Measuring a first temperature in the hot water tank;
A second temperature measuring step of sensing a second temperature in the hot water tank after driving the heating unit provided in the hot water tank for a predetermined first time;
And a first determining step of determining, based on the difference between the first temperature and the second temperature, whether or not water is contained in the hot water tank by the control unit.
12. The method of claim 11,
Wherein the second temperature measured in the second temperature measuring step is a temperature value after the heating unit is driven for the first time and a predetermined second time has elapsed.
12. The method of claim 11,
In the first determining step, it is determined that the water is contained in the hot water tank when the difference value is less than the preset reference value,
Wherein the heating unit in the hot water tank is selectively driven based on the predetermined hot water temperature.
12. The method of claim 11,
In the first determining step, it is determined that the water is not contained in the hot water tank when the difference value is equal to or greater than a predetermined reference value,
And the driving of the heating unit in the hot water tank is stopped.
15. The method of claim 14,
Further comprising a second determination step of determining whether the discharge signal of the drinking water is received in the control unit and whether the reception is terminated.
16. The method of claim 15,
Wherein the first temperature measurement step, the second temperature measurement step, and the first determination step are performed again when it is determined that the discharge signal of the drinking water is completed after the reception of the drinking water in the second determination step Way.
17. The method of claim 16,
Wherein the first temperature measurement step, the second temperature measurement step, the first determination step, and the second determination step are repeated until the difference value becomes less than the reference value .
13. The method of claim 12,
The first temperature and the second temperature are sensed through a temperature sensor installed in the hot water tank in a non-contact manner with the water contained in the hot water tank in the first temperature measurement step and the second temperature measurement step A control method of the drinking water supply device.
KR1020150126340A 2015-09-07 2015-09-07 Drinking water supplying device and method for controlling the same KR101758283B1 (en)

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