KR102112722B1 - Induction heating module and water purifier having the same - Google Patents

Abstract

The present invention, a working coil; A hot water tank arranged to face the working coil at a position spaced apart from the working coil and induction heated by the working coil to heat liquid passing through the inner space; A bracket coupled to the hot water tank with the working coil interposed therebetween; And a spacer disposed between the working coil and the hot water tank to maintain a constant distance between the working coil and the hot water tank, and formed to maintain a constant thickness even when compressed by the combination of the hot water tank and the bracket. Provide a water purifier.

Description

INDUCTION HEATING MODULE AND WATER PURIFIER HAVING THE SAME

The present invention relates to a water purifier that generates hot water in an induction heating method.

In general, the water purifier is a device that converts safe and sanitary beverages into water by filtering various harmful components contained in raw water such as tap water or ground water by filtering at various stages installed inside the main body.

To this end, the water purifier is a device that forms a cold water flow path, a hot water flow path, and a water purification flow path so that purified water that has passed through the filter can be supplied to the water outlet according to a user's choice, and controls the flow of water with a mechanical or electronic valve. .

The water purifier can be divided into a water storage tank type and a direct water tank type depending on whether or not a water tank is provided. The water storage tank type water purifier is configured to store purified water in a water storage tank and provide purified water stored in the water storage tank when a user operates the water outlet. On the other hand, the direct-type water purifier does not have a water storage tank, and when the user operates the water outlet, the raw water is immediately filtered to provide the user with purified water. The direct water purifier is recognized as being more hygienic and water-saving than the water tank type water purifier, and recently, the user's preference for the direct water purifier has increased.

In addition to room temperature water, water purifiers also provide hot and cold water. A water purifier providing hot and cold water has separate heating and cooling devices therein. The heating device is configured to heat the purified water to generate hot water, and the cooling device is configured to cool the purified water to generate cold water.

In order to provide hot or cold water, a direct water purifier must be able to heat or cool the water in a short time. There are various ways in which the heating device heats the purified water in a short time.

For example, Republic of Korea Patent Publication No. 10-0817832 (2008.03.31.) Discloses a configuration for heating the purified water using a planar heating heater. In addition, Korean Patent Application Publication No. 10-2005-0103723 (2005.11.01.) Discloses a configuration for heating purified water by an induction heating method.

Induction heating refers to a method of heating an object using electromagnetic induction. When a current is supplied to the coil, an eddy current is generated in the object to be heated, and Joule heating generated by resistance of the metal increases the temperature of the object to be heated.

The output value of induction heating varies depending on the distance between the coil and the object to be heated. For example, if the output value of induction heating exceeds the normal range (high power), water boils and steam is generated. Conversely, if the induction heating output value does not reach the normal range (low power), it is impossible to sufficiently heat the purified water.

Therefore, it is very important to maintain a constant distance between the coil and the object to be heated. However, the technique disclosed in the prior art is not sufficiently disclosed as a means for maintaining a constant distance between the coil and the object to be heated.

The first object of the present invention is to propose a water purifier including a spacer disposed between the working coil and the hot water tank to maintain a constant distance between the working coil and the hot water tank.

The second object of the present invention is to provide an assembly structure in which a constant distance between the working coil and the hot water tank can be maintained even when the working coil, the hot water tank, and the spacer are assembled without a sealant.

The third object of the present invention is to propose a water purifier having a structure capable of accurately controlling the induction heating output for each water purifier even if a large amount of the water purifier including the induction heating module is produced.

A fourth object of the present invention is to provide a water purifier having a structure capable of suppressing heat generated from the working coil and the hot water tank from being transferred to adjacent parts.

The fifth object of the present invention is to propose a water purifier having a structure capable of cooling the working coil while maintaining a constant distance between the working coil and the hot water tank.

The induction heating module of the present invention includes a working coil, a hot water tank induction heated by the working coil, and a spacer disposed between the working coil and the hot water tank to maintain a constant distance between the working coil and the hot water tank.

The spacer is (1) maintaining a constant distance between the working coil and the hot water tank, (2) electrical insulation, (3) heat transfer suppression, (4) flame retardant material having heat resistance, (5), a structure capable of passing both ends of the working coil , (6) It has the condition of the structure that can realize the cooling of the working coil.

To satisfy the above conditions, the spacer can be formed of mica, quartz, glass or silicon.

In addition, in order to satisfy the above conditions, the spacer is formed in an annular shape, the first part of the spacer forms any part of the annulus, and the second part of the spacer forms the remaining part of the annulus and has a narrower width than the first part.

In addition, in order to satisfy the above condition, the spacer is provided with a hole that faces the hot water tank and the working coil.

One surface of the spacer is in close contact with the hot water tank and the other side of the spacer is in close contact with the working coil so that the distance between the hot water tank and the working coil is determined by the thickness of the spacer. A plurality of spacers may be provided, and in this case, the plurality of spacers are disposed to be in close contact with each other. The hot water tank and the bracket are joined to each other by screws with a working coil and a spacer therebetween.

Specifically, the bracket is provided with a plurality of boss portions which are spaced apart from each other, and the hot water tank and the bracket are coupled to each other by screws inserted into the boss portion. When the combination of the hot water tag and the bracket is completed, an edge of the hot water tank is disposed between the head of the screw and the boss portion.

The bracket includes a base portion, a boss portion, a hot water tank support portion, a position fixing portion, a core receiving portion, a temperature sensor receiving portion, and an overheat preventing fuse receiving portion, and is configured to fix components of the induction heating module to the interior of the water purifier body.

The insulator has (1) electrical insulation, (2) heat transfer suppression, (3) heat-resistant flame retardant, (4), a structure capable of passing both ends of the working coil, and (5) a structure capable of cooling the working coil. Conditions are met.

In order to satisfy the above conditions, the insulator can be formed of mica, quartz, glass or silicon.

In addition, in order to satisfy the above conditions, the insulator is formed in an annular shape, the first portion of the insulator forms any part of the annular shape, and the second portion of the insulator forms the remaining portion of the annular shape and has a narrower width than the first portion.

In addition, in order to satisfy the above conditions, the insulator has holes.

In order to achieve such an object of the present invention, the present invention discloses a water purifier including an induction heating module. The water purifier has a means for solving the problems of the induction heating module.

According to the present invention, the spacer disposed between the hot water tank and the working coil may be formed of mica, quartz, or glass to maintain a constant distance between the hot water tank and the working coil.

In particular, although the spacer is compressed as the hot water tank and the bracket are coupled to each other by screws, the thickness of the spacer can be kept constant. Since the spacer remains in close contact with the hot water tank and the working coil, the space between the hot water tank and the working coil is determined by the spacer. Therefore, that the thickness of the spacer can be kept constant means that the gap between the hot water tank and the working coil can also be kept constant.

Even if the hot water tank and the bracket are coupled to each other by screws, the distance between the hot water tank and the working coil can be kept constant, and according to the structure of the present invention, the positions of the working coil, the hot water tank, and the spacer can be fixed without a sealant. Can be.

Furthermore, unlike the sealant, the screw fastening structure does not cause different results depending on the process, so the structure of the present invention is advantageous for mass production.

As the spacer and the insulator are formed of mica, quartz, glass or silicon, an effect of suppressing heat transfer can be obtained in the present invention. In particular, when heat generated from the induction heating module is transferred to adjacent parts, damage due to heat may be caused, but when heat transfer is suppressed by a spacer and an insulator, damage caused by heat may be prevented.

The spacer and the insulator are provided with holes to secure a contact area between the working coil and air. Therefore, air cooling of the working coil may be realized while maintaining a constant distance between the working coil and the hot water tank.

1 is a perspective view showing the appearance of a water purifier related to the present invention.
Figure 2 is an exploded perspective view showing the internal configuration of the water purifier of the present invention.
3 is a conceptual view showing a flow path configuration of a water purifier related to the present invention.
4 is an exploded perspective view of an induction heating module and a control module related to the present invention.
5 is an exploded perspective view showing some components of an induction heating module related to the present invention.
6 is a side view showing a configuration corresponding to the line AA of FIG. 5 to show the coupling structure of the induction heating module.

1 is a perspective view showing a water purifier 1000 of the present invention.

The water purifier 1000 includes a cover 1010, a water outlet 1020, a base 1030, and a tray 1040.

The cover 1010 forms an external appearance of the water purifier 1000. The appearance of the water purifier 1000 formed by the cover 1010 may be referred to as the main body of the water purifier 1000. Parts for filtering raw water are installed inside the main body of the water purifier 1000. The cover 1010 surrounds the parts to protect the parts. The name of the cover 1010 may be changed to a case or a housing, and may be called. Either name corresponds to the cover 1010 described in the present invention if it is made to surround the parts that form the exterior of the water purifier 1000 and filter raw water.

The cover 1010 may be formed of a single component, but may be formed by combining several components. As an example, as illustrated in FIG. 1, the cover 1010 may include a front cover 1011, a rear cover 1014, a side panel 1013a, an upper cover 1012, and a top cover 1015.

The front cover 1011 is disposed in front of the water purifier 1000. The rear cover 1014 is disposed behind the water purifier 1000. Here, the front and rear of the water purifier 1000 are set based on the direction in which the water outlet 1020 is viewed from the user's gaze in front. However, since the concept of the front and rear of the water purifier 1000 is not absolute, it may vary according to a method of describing the water purifier 1000.

The side panels 1013a are disposed on the left and right sides of the water purifier 1000, respectively. The side panel 1013a is disposed between the front cover 1011 and the rear cover 1014. The side panels 1013a may be combined with the front cover 1011 and the rear cover 1014, respectively. The side panel 1013a substantially forms a side surface of the water purifier 1000.

The upper cover 1012 is disposed in front of the water purifier 1000. The upper cover 1012 is installed at a higher position than the front cover 1011. The water outlet 1020 is exposed as a space between the upper cover 1012 and the front cover 1011. The upper cover 1012 together with the front cover 1011 forms an external appearance of the front surface of the water purifier 1000.

The top cover 1015 forms an upper surface of the water purifier 1000. An input / output unit 1016 may be formed in front of the top cover 1015. The input / output unit 1016 is a concept including an input unit and an output unit. The input unit is configured to receive a user's control command. The method in which the input unit receives the user's control command may include all of touch input, physical pressing, or the like. The output unit is configured to provide the user with audio-visual status information of the water purifier 1000.

The water outlet part (take-out part or coke assembly, 1020) functions to provide water to the user according to a user's control command. At least a portion of the water outlet 1020 is exposed to the outside of the main body of the water purifier 1000 to supply water. In particular, in the water purifier 1000 configured to provide purified water at room temperature, cold water colder than normal temperature, and hot water hotter than normal temperature, at least one of purified water at room temperature, cold water, and hot water is discharged through the water outlet 1020 according to a control command received from a user. Can be.

The water outlet 1020 may be made to be rotatable according to a user's manipulation. The front cover 1011 and the upper cover 1012 form a rotation area of the water discharge part 1020 therebetween, and the water discharge part 1020 may be rotated left and right in the rotation area. Rotation of the water outlet 1020 may be achieved by a force that the user physically exerts on the water outlet 1020. In addition, rotation of the water outlet 1020 may be performed based on a control command applied by the user to the input / output unit 1016. The configuration implementing the rotation of the water outlet 1020 may be installed inside the water purifier 1000, and may be specifically installed in an area covered by the upper cover 1012. Also, the input / output unit 1016 may also be implemented to rotate together with the water discharge unit 1020 when the water discharge unit 1020 is rotated.

The base 1030 forms the bottom of the water purifier 1000. The internal parts of the water purifier 1000 are supported by the base 1030. When the water purifier 1000 is placed on the floor or shelf, the base 1030 faces the floor or shelf. Therefore, when the water purifier 1000 is placed on the floor or a shelf, the structure of the base 1030 is not exposed to the outside.

The tray 1040 is disposed to face the water outlet 1020. Based on the case where the water purifier 1000 is installed as shown in FIG. 1, the tray 1040 faces the water outlet 1020 in the vertical direction. The tray 1040 is formed to support a container or the like for holding purified water or the like discharged through the water outlet part 1020. In addition, the tray 1040 is formed to receive the remaining water falling from the water outlet 1020. When the tray 1040 receives and receives the residual water falling from the water outlet 1020, it is possible to prevent the occurrence of contamination due to the residual water around the water purifier 1000.

Since the tray 1040 needs to receive the remaining water falling from the water outlet 1020, the tray 1040 may also be implemented to rotate together with the water outlet 1020. The input / output unit 1016 and the tray 1040 are preferably implemented to rotate in the same direction as the water outlet unit 1020.

FIG. 2 is an exploded perspective view showing an internal configuration of the water purifier 1000 shown in FIG. 1.

The filter unit 1060 is installed inside the front cover 1011. The filter unit 1060 is configured to filter the raw water supplied from the raw water supply unit to generate purified water. Since it may be difficult for a user to generate an integer suitable for drinking with only one filter, the filter unit 1060 may include a plurality of unit filters 1061 and 1062. The unit filters 1061 and 1062 include, for example, a prefilter such as a carbon block and an adsorption filter, a HEPA filter (High Efficiency Particulate Air filter), and a UF filter (Ultra Filteration or Ultra Filteration filter). And high performance filters. Although two unit filters 1061 and 1062 are installed in FIG. 2, the number of unit filters 1061 and 1062 may be expanded or reduced as necessary.

The plurality of unit filters 1061 and 1062 are connected according to a predetermined order. The preset order means the order in which the filter unit 1060 is suitable for filtering water. Raw water may contain various foreign substances. Since large particles such as hair and dust cause deterioration of filtration performance of high performance filters such as Hepa filters and UF filters, the high performance filters must be protected from large particles such as hair or dust. Therefore, in order to protect the high-performance filters, a pre-filter should be installed upstream of the high-performance filters.

The pre-filter is made to remove large particles from the water. If the pre-filter is disposed on the upstream side of the high-performance filters and the large particles included in the raw water are first removed, the high-performance filters can be protected because the raw water not containing the large particles is supplied to the high-performance filters. The raw water that has passed through the pre-filter is then filtered by a HEPA filter or UF filter.

The purified water generated by the filter unit 1060 may be directly provided to the user through the water outlet unit 1020. In this case, the temperature of the purified water provided to the user corresponds to room temperature. Alternatively, the purified water generated by the filter unit 1060 may be heated by the induction heating module 1100 or cooled by the cold water tank assembly 1200.

The filter bracket assembly 1070 is a structure for fixing unit filters 1061 and 1062 of the filter unit 1060 and fixing parts such as a water discharge channel such as purified water or cold water, a valve, and a sensor.

The lower portion 1071 of the filter bracket assembly 1070 is coupled to the tray 1040. The lower portion 1071 of the filter bracket assembly 1070 is formed to receive the projecting coupling portion 1041 of the tray 1040. As the projecting coupling portion 1041 of the tray 1040 is inserted into the lower portion 1071 of the filter bracket assembly 1070, the filter bracket assembly 1070 and the tray 1040 are combined.

The lower portion 1071 of the filter bracket assembly 1070 and the tray 1040 have curved surfaces corresponding to each other. The lower portion 1071 of the filter bracket assembly 1070 can be rotated independently about the rest of the filter bracket assembly 1070.

The upper portion 1072 of the filter bracket assembly 1070 is configured to support the water outlet portion 1020. The upper portion 1072 of the filter bracket assembly 1070 forms a rotation path of the water outlet portion 1020. The water outlet part 1020 may be divided into a take-out coke part 1021 protruding to the outside of the water purifier 1000 and a rotating part 1022 disposed inside the water purifier 1000. The rotating portion 1022 may be formed in a circular shape for rotation as shown in FIG. 2. The rotating portion 1022 is mounted on the upper portion 1072 of the filter bracket assembly 1070. The water outlet 1020 mounted on the upper portion 1072 of the filter bracket assembly 1070 is made to rotate relative to the filter bracket assembly 1070.

The lower portion 1071 and the upper portion 1072 of the filter bracket assembly 1070 may be connected to each other by an upper and lower connection portion 1073. The lower portion 1071 and the upper portion 1072 of the filter bracket assembly 1070 connected to each other by the upper and lower connection portions 1073 may be rotated in the same direction. If the user rotates the water outlet 1020, the upper part 1072, upper and lower connections 1073, the lower part 1071, and the tray 1040 of the filter bracket assembly 1070 connected to the water outlet part 1020 are the water outlet part. It can be rotated with (1020).

A filter installation area 1074 is formed between the lower portion 1071 and the upper portion 1072 of the filter bracket assembly 1070 to receive unit filters 1061 and 1062 of the filter portion 1060. The filter installation area 1074 provides an installation space of the unit filters 1061 and 1062.

On the opposite side of the filter installation area 1074, a support 1075 protruding toward the rear of the water purifier 1000 is formed. The support 1075 is configured to support the control module 1080 and the induction heating module 1100. The control module 1080 is an induction heating module 1100 is mounted on a support (1075). The support 1075 is disposed between the induction heating module 1100 and the compressor 1051 to block the heat formed in the induction heating module 1100 from being conducted to the compressor 1051 or the like.

The control module 1080 is configured to implement overall control of the water purifier 1000. Various printed circuit boards that control the operation of the water purifier 1000 may be built in the control module 1080.

The induction heating module 1100 is formed to heat the purified water generated in the filter unit 1060 to generate hot water. The induction heating module 1100 includes parts capable of heating purified water using an induction heating method. The induction heating module 1100 receives purified water from the filter unit 1060, and the hot water generated in the induction heating module 1100 is discharged through the water outlet 1020.

The induction heating module may include a printed circuit board that controls the production of hot water. A protective cover 1161 may be coupled to one side of the induction heating module to prevent water from entering the printed circuit board and to protect the printed circuit board in the event of a fire.

The refrigeration cycle device 1050 is formed to produce cold water. The refrigeration cycle device 1050 refers to a set of devices in which the compression-condensation-expansion-evaporation process of the refrigerant occurs continuously. In order to generate cold water in the cold water tank assembly 1200, the refrigeration cycle device 1050 must first operate to make the coolant filled in the cold water tank assembly 1200 cool.

The refrigeration cycle device 1050 includes a compressor 1051, a condenser 1052, a capillary 1053, an evaporator (not shown, disposed inside the cold water tank assembly), a dryer 1055, and a refrigerant passage connecting them to each other. . The refrigerant flow path may be formed by piping or the like, and the refrigerant flow path connects each other to the compressor 1051, the condenser 1052, the expansion device 1053, and the evaporator to form a circulation flow path of the refrigerant.

The compressor 1051 is configured to compress the refrigerant. The compressor 1051 is connected to the condenser 1052 by a refrigerant passage, and the refrigerant compressed in the compressor 1051 flows through the refrigerant passage to the condenser 1052. The compressor 1051 may be disposed under the support 1075 and is installed to be supported by the base 1030.

The condenser 1052 is configured to condense the refrigerant. The refrigerant compressed in the compressor 1051 flows into the condenser 1052 through the refrigerant passage, and is condensed by the condenser 1052. The refrigerant condensed in the condenser 1052 flows to the dryer 1055 through the refrigerant passage.

* Dryer 1055 is made to remove moisture from the refrigerant. In order to improve the efficiency of the refrigeration cycle device 1050, moisture must be previously removed from the capillary tube 1053 and the refrigerant to be introduced into the evaporator. The dryer 1055 is installed between the condenser 1052 and the capillary tube 1053, and removes moisture from the refrigerant to improve the efficiency of the refrigeration cycle device 1050.

The expansion of the refrigerant is realized by capillaries 1053. The capillary tube 1053 is made to expand the refrigerant, and depending on the design, a throttle valve or the like may constitute an expansion device instead of the capillary tube 1053. The capillary tube 1053 may be rolled in a coil form to secure a sufficient length in a narrow space.

The evaporator is made to evaporate the refrigerant, and is installed inside the cold water tank assembly 1200. The coolant filled inside the cold water tank assembly 1200 and the refrigerant in the refrigeration cycle device 1050 are exchanged with each other by an evaporator, and the coolant may be kept at a low temperature by heat exchange. In addition, purified water may be cooled by cooling water maintained at a low temperature.

The refrigerant heated by heat exchange with the cooling water in the evaporator is returned to the compressor 1051 again along the refrigerant passage, and continuously circulates the refrigeration cycle device 1050.

Base 1030 supports compressor 1051, front cover 1011, rear cover 1014, side panels 1013a, 1013b, filter bracket assembly 1070, condenser 1052, fan 1033, etc. Is formed. It is desirable that the base 1030 has high rigidity to support these components.

The condenser 1052 and the fan 1033 may be installed on the rear side of the water purifier 1000, and continuous air circulation is required for heat dissipation of the condenser 1052. An intake port 1034 may be formed at the bottom of the base 1030 for circulation of air. The air sucked through the intake port 1034 flows by the fan 1033. Air flows toward the condenser 1052 to implement air cooling. A fan 1033 and a duct structure 1032 surrounding the condenser 1052 may be fixed to the base 1030 to increase heat dissipation efficiency of the condenser 1052.

A drain 1035 is installed behind the duct structure 1032. The drain 1035 is exposed outside the water purifier 1000 to form a drain flow path. Since all of the internal flow paths of the water purifier 1000 are made to pass through, even if the drain 1035 is connected to any one internal flow path, all the fluid present in the internal flow paths can be discharged through the drain 1035.

A support 1031 configured to support the cold water tank assembly 1200 may be installed at an upper portion of the condenser 1052. The base 1031 has a first hole 1031a on the rear side, and the rear cover 1014 has a second hole 1014a. The first hole 1031a and the second hole 1014a are formed at positions corresponding to each other. The first hole 1031a and the second hole 1014a are for disposing a drain valve for draining cooling water filled in the cold water tank assembly 1200.

The cold water tank assembly 1200 is formed to receive coolant therein. The cold water tank assembly 1200 receives purified water generated by the filter unit 1060. In particular, in the case of the direct water purifier 1000 without a separate water storage tank, the cold water tank assembly 1200 may be directly supplied with purified water from the filter unit 1060.

The temperature of the coolant filled in the cold water tank assembly 1200 is lowered by the operation of the refrigeration cycle device 1050. The cold water tank assembly 1200 is configured to cool purified water with cooling water to form cold water.

Since the coolant is stored in the cold water tank assembly 1200 and does not circulate, after a long time, the degree of contamination of the coolant increases. For hygiene, the cooling water stored in the cold water cold assembly is periodically discharged to the outside, and new cooling water must be filled in the cold water tank assembly 1200.

3 is a conceptual view showing a flow path configuration of the water purifier 1000 according to the present invention. The solid line in Fig. 3 represents the flow path of water. The water flow path may be divided into a raw water line 1400 on the upstream side of the filter portion 1060 and a purified water line 1500 on the downstream side of the filter portion 1060 based on the filter portion 1060. Here, the upstream side or the downstream side is a division based on the flow of water.

The water supply valve 1312 is opened and closed based on a control command input through the input unit 1016 (see FIG. 1). When a control command for extracting purified water, hot water, or cold water is input through the input unit 1016, the water supply valve 1312 is opened, and raw water is supplied from the raw water supply unit 10 to the filter unit 1060.

Raw water passes through the pressure reducing valve 1311 in the process of being supplied to the filter unit 1060. The pressure reducing valve 1311 is installed between the raw water supply part 10 and the filter part 1060. The pressure reducing valve 1311 is configured to reduce the pressure of the raw water supplied from the raw water supply unit 10.

Since the direct-type water purifier 1000 does not have a water storage tank, the pressure of purified water discharged through the water outlet 1020 is determined by the pressure of the raw water supplied from the raw water supply 10. In general, since the pressure of the raw water supplied from the raw water supply unit 10 is high pressure, if there is no pressure reducing valve 1311, the water is discharged at an excessively high pressure in the outlet 1020. In addition, there is a risk that the unit filters 1061 and 1062 of the filter unit 1060 are physically damaged by the pressure of raw water. Therefore, decompression of raw water is required.

The pressure reducing valve 1311 depressurizes the raw water supplied from the raw water supply unit 10 to the filter unit 1060. Accordingly, the filter unit 1060 may be protected, and the water discharge unit 1020 may discharge water at an appropriate pressure.

Raw water is filtered while sequentially passing through the unit filters 1061 and 1062 of the filter unit 1060. Based on the filter unit 1060, water on the upstream side may be referred to as raw water, and water on the downstream side may be referred to as purified water.

The purified water generated in the filter unit 1060 sequentially passes through the water supply valve 1312 and the flow sensor 1313. The flow sensor 1313 is configured to measure the flow rate supplied from the filter unit 1060. The flow rate measured by the flow sensor 1313 is used to control the water purifier.

For example, when a control command for extracting a predetermined amount of purified water is input through the input unit 1060 of the water purifier 1000, a pulse value corresponding to the predetermined amount is input to the flow sensor 1313 by the control module 1080 and controlled. The water supply valve 1312 is opened by the control of the module 1080. When an integer of the flow rate corresponding to the pulse value passes through the flow rate sensor 1313, the control module 1080 receives feedback from the flow rate sensor 1313 to control the water supply valve 1312, and the water supply valve 1312 Is closed by the control of the control module 1080. The flow rate measured by the flow sensor 1313 through such a process may be used to control the water purifier 1000.

The water purification line 1500 connected to the flow sensor 1313 is branched into two branches 1600 and 1700, and one branch is sequentially connected to the flow control valve 1351 and the induction heating module 1100. The fork, which is sequentially connected to the flow control valve 1351 and the induction heating module 1100, may be referred to as a hot water line 1700. A check valve 1321 is installed on the other fork 1600, and the fork branches to the purified water line 1601 and the cold water line 1602 again from the downstream side of the check valve 1321. A purified water outlet valve 1330 is installed in the purified water line 1601, and a cold water outlet valve 1340 is installed in the cold water line 1602. The purified water line 1601 and the cold water line 1602 are joined again to be connected to the outlet 1020, and a check valve 1322 is installed in the joined flow path 1603.

The two check valves 1321 and 1322 installed on the upstream and downstream sides of the purified water outlet valve 1330 and the cold water outlet valve 1340 are first and second check valves 1321 and 232. It can be named as The first check valve 1321 and the second check valve 1322 are for preventing residual water.

When a control command for supplying hot water is input to the water purifier, the water supply valve 1312, the flow control valve 1351, and the hot water outlet valve 1351 are opened, and hot water is discharged through the hot water line 1700. In this process, the pressure inside the purified water line 1601 and the cold water line 1602 may be lowered, such that the purified water discharge valve 1330 or the cold water discharge valve 1340 is opened and closed momentarily. There is no problem of residual water in the structure in which the water outlet unit 1020 has only one extraction coke and cold water and hot water are both discharged through the extraction coke. However, in a structure in which both cold water and hot water are discharged through two different blowout cokes, a small amount of residual water may be discharged from the other blowout coke while hot water is discharged from one blowout coke.

However, if the first check valve 1321 is installed on the upstream side of the bifurcation point of the purified water line 1500 and the cold water line 1602, the pressure change formed in the process of discharging hot water through the hot water line 1700 is the purified water line ( 1601) and the transmission to the cold water line 1602 may be blocked. Accordingly, it is possible to prevent the occurrence of the phenomenon that the purified water discharge valve 1330 or the cold water discharge valve 1340 is opened and closed momentarily.

When comparing the configuration in which the cold water outlet valve 1340 is installed on the upstream side of the cold water tank assembly 1200 and the configuration in which the cold water outlet valve 1340 is installed on the downstream side of the cold water tank assembly 1200, the former is in the latter. Compared, you can get even a little more cold water. This is because cold water in an amount corresponding to the flow path length between the cold water tank assembly 1200 and the cold water outlet valve 1340 may be further supplied. Therefore, the cold water outlet valve 1340 is preferably installed on the upstream side of the cold water tank assembly 1200 as shown. However, in a structure in which the cold water outlet valve 1340 is installed on the upstream side of the cold water tank assembly 1200, residual water may be generated in the cold water line 1602 due to a change in pressure inside the cold water line 1602, and even though the water discharge is stopped, a small amount The remaining water may be discharged through the water outlet 1020.

However, when the second check valve 1322 is installed in the confluence flow path 1603 of the purified water line 1601 and the cold water line 1602, the pressure change of the cold water line 1602 can be prevented from being transmitted to the water outlet 1020. . Accordingly, it is possible to prevent a phenomenon in which a small amount of residual water is discharged through the water outlet 1020 when the water is stopped.

The purified water that has passed through the flow sensor 1313 may be supplied directly to the user in the state of normal temperature, or may be supplied to the user after becoming hot or cold water.

The purified water outlet valve 1330 and the cold water outlet valve 1340 are respectively opened and closed based on a control command input through the input unit 1016. When a control command for extracting purified water is input through the input unit 1016, the water supply valve 1312 and the purified water extraction valve 1330 are opened. The purified water generated in the filter unit 1060 is discharged to the water extraction unit 1020 through the water purification line 1601. Similarly, when a control command for extracting cold water is input through the input unit 1016, the water supply valve 1312 and the cold water discharge valve 1340 are opened. The purified water generated in the filter unit 1060 flows into the cold water tank assembly 1200 along the cold water line 1602 and is cooled while passing through the cold water tank assembly 1200. The cold water generated in the cold water tank assembly 1200 is discharged through the water outlet 1020.

A drain valve 1280 is installed in the cold water tank assembly 1200, and cooling water filled in the cold water tank assembly 1200 may be discharged to the outside through the drain valve 1280.

The hot water line 1700 is provided with a flow control valve 1351. When a flow rate of an appropriate amount or more flows into the hot water tank 1130 (refer to FIG. 4), sufficient heating may not be performed, so that the flow rate of the appropriate amount should always be adjusted. The flow control valve 1351 is installed on the upstream side of the induction heating module 1100 and is formed to control the flow rate of purified water flowing into the hot water tank 1130.

The thermistor 1352 may be installed together in the flow control valve 1351. The temperature of the purified water measured by the thermistor 1352 is utilized for the control of the induction heating module 1100. For example, if the temperature of the purified water measured by the thermistor 1352 is relatively low, the induction heating module 1100 can be operated with high power. Conversely, if the temperature of the purified water measured by the thermistor 1352 is relatively high, the induction heating module 1100 may be operated with low power.

The hot water outlet valve 1352 is installed on the downstream side of the hot water tank 1130. When a control command for discharging hot water is input through the input unit 1016, the water supply valve 1312 and the hot water discharge valve 1352 are opened and hot water is discharged along the hot water line 1700.

A safety valve 1360 may be installed in a flow path branched from the hot water line 1700. The safety valve 1360 is formed to operate by a pressure change formed in the flow path of water. When the flow path of the water purifier 1000 is overpressure, such as the induction heating module 1100 operating abnormally, the safety valve 1360 is opened, and the purified water is drained through the drain 1035.

4 is an exploded perspective view of the induction heating module 1100 and the control module 1080 related to the present invention.

The induction heating module 1100 refers to a set of parts that generate hot water by receiving purified water generated by the filter unit 1060 (see FIG. 2). In particular, in the case of a direct water purifier (1000, see FIGS. 1 to 3) that does not have a separate water storage tank, purified water may be supplied to the induction heating module 1100 directly from the filter unit 1060 (see FIG. 2) without going through the water storage tank. Can be.

The induction heating module 1100 includes an induction heating printed circuit board 1110, an induction heating printed circuit board cover 1121, 1122, a hot water tank 1130, a working coil 1140, a bracket 1060, and a shield plate 1190. It includes.

The induction heating printed circuit board 1110 controls the induction heating operation of the working coil 1140. Both ends of the working coil 1140 are connected to the induction heating printed circuit board 1110 and controlled by the induction heating printed circuit board 1110. For example, when the user inputs a control command through the input unit 1016 of the water purifier (see 1000, 1 and 2) to take out the hot water, the purified water generated in the filter unit 1060 (see FIG. 2) is a hot water tank (1130). The induction heating printed circuit board 1110 controls the current to flow through the working coil 1140. The hot water tank 1130 is induction heated by the current supplied to the working coil 1140. The purified water is instantaneously heated while passing through the hot water tank 1130 to become hot water.

The induction heating printed circuit board covers 1121 and 1122 are made to surround the induction heating printed circuit board 1110. The induction heating printed circuit board covers 1121 and 1122 include a first induction heating cover 1121 and a second induction heating cover 1122.

An induction heating printed circuit board 1110 is installed in the inner space formed by the first induction heating cover 1121 and the second induction heating cover 1122. The first induction heating cover 1121 and the second induction heating cover 1122 are coupled to each other to prevent the penetration of water. In addition, a sealing member (not shown) may be coupled to the edges of the first induction heating cover 1121 and the second induction heating cover 1122 to prevent ingress of water. The first induction heating cover 1121 and the second induction heating cover 1122 are preferably made of a flame retardant material to prevent damage to the induction heating printed circuit board 1110 by fire.

The hot water tank 1130 heats purified water to generate hot water. The hot water tank 1130 has an internal space for heating the liquid. The hot water tank 1130 is induction heated by the magnetic force line formed by the working coil 1140. The liquid is heated while passing through the inner space of the hot water tank 1130 to become hot water. The hot water tank 1130 is made to maintain airtightness.

For miniaturization of a water supply device such as a water purifier (see FIG. 1) or a refrigerator, it is necessary to miniaturize the hot water tank 1130. In addition to the length or width of the hot water tank 1130, the thickness of the hot water tank 1130 can be reduced to reduce the size of the water supply device. Therefore, as the hot water tank 1130 is formed flat, it is easy to realize miniaturization of the water supply device. However, as shown in FIG. 4, the hot water tank 1130 in a flat shape causes several problems.

The first problem is the deformation of the hot water tank 1130. When the liquid is heated in the interior space of the hot water tank 1130, the liquid expands. As the liquid expands, the pressure in the interior space increases rapidly. The sudden increase in pressure causes deformation of the hot water tank 1130.

The second problem is insufficient heating. If the liquid is heated using the very large hot water tank 1130, the time for heating the liquid is sufficient, so that the liquid can be sufficiently heated. However, since the miniaturized hot water tank 1130 does not have enough time to heat the liquid, the liquid may not be sufficiently heated.

The two problems are not necessarily caused only by miniaturization of the hot water tank 1130. However, the smaller the hot water tank 1130 is, the more serious the problem has. The hot water tank 1130 of the present invention has a structure capable of improving this problem. The detailed structure of the hot water tank 1130 will be described later with reference to FIG. 5.

The working coil 1140 forms a magnetic force line for induction heating of the hot water tank 1130. The working coil 1140 is disposed on one side of the hot water tank 1130 to face the hot water tank 1130. When a current is supplied to the working coil 1140, a magnetic force line is formed in the working coil 1140. The magnetic force line affects the hot water tank 1130, and the hot water tank 1130 is induction heated under the influence of the magnetic force line.

The shield plate 1190 is disposed on one side of the working coil 1140. The shield plate 1190 is disposed on the opposite side of the hot water tank 1130 based on the working coil 1140. The shield plate 1190 is to prevent the magnetic force lines generated from the working coil 1140 from being radiated to the rest of the area except the hot water tank 1130. The shield plate 1190 may be made of aluminum or other materials that change the flow of magnetic force lines.

The control module 1080 includes a control printed circuit board 1082, a noise printed circuit board 1083, an NFC (Near Field Communication) printed circuit board 1084, a buzzer 1085, and a main printed circuit board 1086. And main printed circuit board covers 1087 and 1088.

The control printed circuit board 1082 is a sub configuration of the display printed circuit board (not shown). The control printed circuit board 1082 is not an essential configuration for driving a water supply device such as a water purifier 1000 (see FIG. 1), but serves as an auxiliary for a display printed circuit board (not shown).

The noise printed circuit board 1083 is for supplying power to the induction heating printed circuit board 1110. Since the output voltage for induction heating is very high, sufficient power must be supplied. The noise printed circuit board 1083 is also not an essential configuration for driving a water supply device such as a water purifier 1000 (see FIG. 1). However, a water supply device such as a water purifier 1000 (see FIG. 1) may have a noise printed circuit board 1083 in case the power required for induction heating is not sufficiently supplied. The noise printed circuit board 1083 may supply an additional power to the induction heating printed circuit board 1110 to satisfy an output voltage for induction heating. The noise printed circuit board 1083 may serve to provide auxiliary power to the induction heating printed circuit board 1110 as well as other configurations.

The buzzer 1085 outputs sound to provide accurate defect information to a user when a defect occurs in a water supply device such as a water purifier 1000 (see FIG. 1). The buzzer 1085 may output a specific sound of a previously input code according to a defect.

The NFC printed circuit board 1084 is for exchanging data with a communication device. Currently, personal communication devices such as smartphones are widely used. Therefore, if the consumer can check the state of the water purifier using the personal communication device or input a control command, the convenience of the consumer can be improved. The NFC printed circuit board 1084 may provide status information of a water supply device to a paired personal communication device, and receive a user's control command from the personal communication device.

The main printed circuit board 1086 controls the overall operation of a water supply device such as a water purifier 1000 (see FIG. 1). The driving of the input / output unit 1016 (see FIG. 1) described in FIG. 1 or the compressors 1051 (see FIG. 2) described in FIG. 2 may also be controlled by the main printed circuit board 1086. The main printed circuit board 1086 may receive insufficient power through the noise printed circuit board 1083 when the power is insufficient.

The main printed circuit board covers 1087 and 1088 are made to surround the main printed circuit board 1086. The main printed circuit board covers 1087 and 1088 include a first main cover 1087 and a second main cover 1088.

The main printed circuit board 1086 is installed in the inner space formed by the first main cover 1087 and the second main cover 1088.

The first main cover 1087 and the second main cover 1088 are coupled to each other to prevent the penetration of water. A sealing member (not shown) may be installed on the first main cover 1087 and the second main cover 1088 to prevent the penetration of water. Also, the first main cover 1087 and the second main cover 1088 are preferably made of a flame retardant material to prevent the main printed circuit board 1086 from being damaged by fire.

Hereinafter, a structure of the hot water tank 1130 that implements deformation prevention and flow distribution (or flow rate control) will be described. In addition, a structure capable of maintaining a constant distance between the working coil 1140 and the hot water tank 1130 will be described.

5 is an exploded perspective view showing some components of the induction heating module 1100 (see FIG. 4) related to the present invention.

The hot water tank 1130 is formed by combining the edges of the first cover 1131 and the second cover 1132 with each other. The rim of the first cover 1131 and the rim of the second cover 1132 may be joined to each other by welding or the like to maintain airtightness. The hot water tank 1130 has an internal space for heating the liquid. The inner space is formed by the combination of the first cover 1131 and the second cover 1132.

The hot water tank 1130 includes an inlet pipe 1132a and an outlet pipe 1132b. The inlet pipe 1132a and the outlet pipe 1132b may be formed in the second cover 1132. The intake pipe 1132a corresponds to a flow path through which a liquid to be heated flows. The water discharge pipe 1132b corresponds to a flow path through which the heated liquid is discharged. The inlet pipe 1132a and the outlet pipe 1132b may be formed on opposite sides of each other.

The first cover 1131 is made to generate heat under the influence of the magnetic force line formed by the working coil 1140. Since the first cover 1131 is induction heated by the working coil 1140, in order to accurately control the output of the first cover 1131, the interval between the first cover 1131 and the working coil 1140 is kept constant. Should be. Accurate control of induction heating means controlling the output of the induction heating module 1110.

If the working coil 1140 deviates from the reference position, it is difficult to accurately control the induction heating of the first cover 1131. Here, the reference position refers to the position of the working coil 1140 in which induction heating of the first cover 1131 by the working coil 1140 can be accurately controlled. The distance between the first cover 1131 and the working coil 1140 is maintained by spacers 1151 and 1152 described later.

Likewise, if one portion of the first cover 1131 is too far from the working coil 1140 or placed too close to the working coil 1140 compared to the other portion, induction heating of the portion is difficult to accurately control. Therefore, it is preferable that the first cover 1131 has a shape of a flat plate so that all portions of the first cover 1131 are uniformly positioned at a proper distance from the working coil 1140.

The first cover 1131 may be made of a suitable material for heat generation. The first cover 1131 may be made of stainless steel, and preferably may be made of four series stainless steel. More preferably, the first cover 1131 may be made of stainless steel (STS) 439 material. STS 439 has enhanced corrosion resistance compared to STS430. Corrosion resistance refers to a property that can inhibit corrosion by contact with water. The first cover 1131 may have a thickness of about 0.8mm.

Since the second cover 1132 is disposed on the opposite side of the working coil 1140 based on the first cover 1131 and has little influence of magnetic force lines, it has less relationship with heat generation than the first cover 1131. Therefore, the second cover 1132 is preferably made of a material having corrosion resistance rather than heat generation characteristics. The second cover 1132 may be made of stainless steel, and preferably may be made of three series of stainless steel. More preferably, the second cover 1132 may be made of STS 304 material. STS 304 has stronger corrosion resistance than STS 430 or STS 439. The second cover 1132 may have a thickness of about 1.0 mm.

Since the second cover 1132 is less related to induction heating, it is not necessary to maintain a constant distance from the working coil 1140. Therefore, a portion of the second cover 1132 may be disposed farther away from the working coil 1140 or closer to the working coil than the other portion.

The second cover 1132 includes a base surface 1132c, a protruding surface 1132d, a welding portion 1132e, and a protruding portion 1132f. The base surface 1132c, the protruding surface 1132d, and the protrusion 1132f may be integrally formed by press working. When the second cover 1132 having the base surface 1132c is partially press-processed, a protrusion surface 1132d and a protrusion 1132f may be formed on the second cover 1132. Being integrally formed does not consist of separate components, but rather means composed of one component. The base face 1132c, the protruding face 1132d, and the protrusion 1132f are any of the second covers 1132. It should be understood that the part is named to distinguish it from other parts. The base surface 1132c, the protruding surface 1132d, and the protrusion 1132f are names indicating parts of the second cover 1132.

The base surface 1132c faces the first cover 1131 at a position spaced apart from the first cover 1131. It was previously described that the hot water tank 1130 has an internal space for heating the liquid. The base surface 1132c is spaced from the first cover 1131 to form the interior space.

The protruding surface 1132d protrudes from the base surface 1132c toward the first cover 1131. The protruding surface 1132d may be in close contact with the first cover 1131. The circumference of the protruding surface 1132d connects the base surface 1132c and the protruding surface 1132d to each other. When the second cover 1132 is pressed to form the protruding surface 1132d, a circumference that naturally connects the base surface 1132c and the protruding surface 1132d is formed. The circumference of the protruding surface 1132d may be formed to be inclined.

The welding portion 1131e is formed by welding the first cover 1131 and the second cover 1132. More specifically, the welding portion 1131e is formed by welding the first cover 1131 and the protruding surface 1132d. Therefore, the welding portion 1131e is formed not only on the protruding surface 1132d, but also on the first cover 1131.

The base surface 1132c is spaced apart from the first cover 1131 to form the interior space of the hot water tank 1130 and therefore cannot be welded to the first cover 1131. Since the circumference of the protruding surface 1132d is also closer to the base surface 1132c, it is farther away from the first cover 1131, so it is difficult to weld to the first cover 1131. On the other hand, since the protruding surface 1132d protrudes to be in close contact with the first cover 1131, it can be easily welded to the first cover 1131. The protruding surface 1132d may be referred to as a prerequisite for forming the welding portion 1131e rather than having a technical meaning in itself.

The welding portion 1131e is for preventing deformation of the first cover 1131. When the temperature of the liquid rises inside the hot water tank 1130 by the operation of the induction heating module 1100 (see FIG. 3), the liquid gradually expands and the pressure inside the hot water tank 1130 gradually increases. It is known that when the water evaporates and becomes a vapor, the volume inside the hot water tank 1130 may rise very high in the process of generating hot water. In addition, the internal pressure of the rapidly increasing hot water tank 1130 may cause deformation of the first cover 1131.

The first cover 1131 has a condition that it must have a shape of a flat plate for accurate control of induction heating, and the flat plate is limited to having a deformation preventing structure due to pressure increase. The welding portion 1131e was introduced to prevent deformation of the first cover 1131 within this limitation.

Welding refers to a process of joining two metal materials to each other by locally applying heat to melt a part of the metal material and rearranging the atomic bonds to a desired position. Joining by welding has a very strong bonding force by rearrangement of atomic bonds. Since the welding portion 1131e is formed by welding the protruding surface 1132d and the first cover 1131, it can be described that the first cover 1131 has a welding portion 1131e, and the second cover 1132 It may be described as having a welding portion 1132e, and it may be described that the first cover 1131 and the second cover 1132 have a welding portion 1131e. Furthermore, the welding portion 1131e may be described as being formed between the first cover 1131 and the second cover 1132. Although the welding part (not shown) of the second cover 1132 is not illustrated in FIG. 5, its shape and position can be inferred from the welding part 1131e of the first cover 1131.

Since the welding portion 1131e strongly couples the first cover 1131 and the second cover 1132, deformation of the first cover 1131 may be prevented even if the internal pressure of the hot water tank 1130 increases. Furthermore, the welding portion 1131e can be understood as being capable of preventing deformation of the first cover 1131 as well as the second cover 1132 in that the first cover 1131 and the second cover 1132 are mutually coupled. have.

The position of the welding portion 1132e is not limited to a specific position. The welding portion 1132e is preferably formed at a position that does not overlap with the temperature sensor 1181, but this is not necessary. The overlapping position means that the welding portion 1132e and the temperature sensor 1181 are projected to the same area when the working coil assembly 1140 is viewed from the second cover 1132 in front.

The temperature sensor 1181 is disposed on the opposite side of the second cover 1132 based on the first cover 1131. The temperature sensor 1181 is configured to measure the temperature of the liquid passing through the inner space of the hot water tank 1130. In order for the temperature sensor 1181 to measure the temperature of the liquid, the liquid must be present at a position overlapping the temperature sensor 1181. However, if the welding portion 1131e is formed at a position overlapping with the temperature sensor 1181, no liquid is present at a position overlapping the temperature sensor 1181, and only the welding part 1131e is present. Therefore, in this structure, the temperature measurement of the hot water by the temperature sensor 1181 may be inaccurate.

The welding portion 1131e has a closed curve shape. If the welding portion 1131e is formed in a shape having an end point such as a straight line or a curve, the effect of high pressure formed in the hot water tank 1130 is concentrated at the end point. Accordingly, separation of the first cover 1131 and the second cover 1132 may occur from the end point. On the other hand, if the welding portion 1132e has a shape of a closed curve, the effect of high pressure can be evenly distributed over the closed curve without being concentrated on any part. Therefore, the welding part 1131e of the closed curve can improve the pressure resistance performance of the hot water tank 1130.

The closed curve in this specification means a figure having the same start point and end point when a point on a straight line or a curve is taken. For example, since polygons as well as circles and ellipses correspond to the closed curves, the closed curves may not necessarily be formed only by curves, but may also be formed by a set of straight lines. Accordingly, a closed figure or a single closed curve may be used instead of the closed curve.

The protrusion 1132f protrudes from the base surface 1132c toward the first cover 1131. Unlike the protruding surface 1132d being in close contact with the first cover 1131, the protrusion 1132f is not in close contact with the first cover 1131 and maintains a spaced state from the first cover 1131. However, the protrusion 1132f is formed closer to the first cover 1131 than the base surface 1132c.

The protrusion 1132f extends toward the inlet pipe 1132a and the outlet pipe 1132b of the hot water tank 1130. For example, when the inlet pipe 1132a and the outlet pipe 1132b are disposed opposite to each other based on the vertical direction of the hot water tank 1130, the projections 1132f also include the inlet pipe 1132a and the outlet pipe 1132b It may extend in the vertical direction toward. The protrusion 1132f may reinforce the stiffness (or strength) of the second cover 1132 through a structure protruding toward the first cover 1131 and extending toward the inlet pipe 1132a and the outlet pipe 1132b. .

The protrusion 1132f is for preventing deformation of the second cover 1132 and distributing the flow rate of the liquid (or controlling the flow rate of the liquid). As described above, when the internal pressure of the hot water tank 1130 increases, deformation of the first cover 1131 as well as the second cover 1132 may be caused. Since the protrusion 1132f reinforces the rigidity of the second cover 1132 through a structure extending in a protruding state, even if the internal pressure of the hot water tank 1130 increases, the second cover 1132 by the protrusion 1132f The deformation of the can be prevented. Furthermore, since the second cover 1132 is strongly coupled to the first cover 1131 by the welding part 1132e, deformation of the second cover 1132 is caused by interaction between the welding part 1132e and the protrusion 1132f. Can be prevented.

The protrusion 1132f has a constant width in a direction intersecting the extending direction. For example, the extending direction of the projection 1132f is the up-down direction toward the inlet pipe 1132a and the outlet pipe 1132b. The direction intersecting the extending direction is a left-right direction. Since the projection 1132f has a constant width in the left-right direction, particles of the liquid introduced through the intake pipe 1132a collide with the projection 1132f. And the particles of the collided liquid spread out all over the place. Through this mechanism, the protrusion 1132f may distribute the flow rate to the interior of the hot water tank 1130.

Furthermore, the protrusion 1132f controls the flow rate. For example, the protrusion 1132f forms a flow resistance to lower the flow rate of the liquid. Particles of the liquid flowing into the hot water tank 1130 through the inlet pipe 1132a are resistant to flow as they collide with the protrusion 1132f. Therefore, when the particles of the liquid collide with the protrusions 1132f, the flow velocity of the liquid decreases. This is to prevent the liquid from being heated sufficiently in the hot water tank 1130 and discharged excessively quickly. The protrusion 1132f controls the flow rate so that the liquid can sufficiently stay in the hot water tank 1130. Accordingly, the liquid can be sufficiently heated in the hot water tank 1130.

The protrusion 1132f includes a first protrusion 1132f1 and a second protrusion 1132f2.

The first protrusion 1132f1 extends toward the inlet pipe 1132a and the outlet pipe 1132b of the hot water tank assembly 1130. The first protrusion 1132f1 is for preventing deformation of the second cover 1132. The first protrusion 1132f1 may have a smaller width than the second protrusion 1132f2.

The second protrusion 1132f2 extends in a direction crossing the extending direction of the first protrusion 1132f1. For example, the first protrusion 1132f1 extends in the vertical direction, and the second protrusion 1132f2 extends in the horizontal direction intersecting the vertical direction.

The left and right extension lengths of the second protrusion 1132f2 are longer than the width of the first protrusion 1132f1. This is because the second projection 1132f2 is configured to distribute the flow rate of the second cover 1132 and control the flow rate. In order to disperse the liquid to be heated in the hot water tank 1130, the second protrusion 1132f2 must be able to collide with particles of the liquid. The extended length of the second protrusion 1132f2 is formed to be longer than the width of the first protrusion 1132f1 to provide a collision area with liquid particles. In addition, the second protrusion 1132f2 may protrude closer to the first cover 2131 than the first protrusion 1132f1 to provide a collision area.

The second protrusions 1132f2 may be formed at both ends of the first protrusions 1132f1, respectively. In FIG. 5, when both ends of the first protrusion 1132f1 are referred to as a first end and a second end, respectively, the first end is disposed close to the inlet pipe 1132a, and the second end is disposed close to the outlet pipe 1132b. do. The second protrusion 1132f2 may be formed at the first end and the second end of the first protrusion 1132f1, respectively, or may be formed between the first end and the second end.

The hot water tank 1130 may include a plurality of first protrusions 1132f1 and second protrusions 1132f2. At least some of the plurality of second protrusions 1132f2 are arranged to contact the liquid introduced through the inlet pipe 1132a or the liquid to be discharged through the outlet pipe 1132b. Contact with liquid means collision with liquid particles. Flow rate distribution and flow rate control may be achieved through the structure of the second protrusion 1132f2.

Among the plurality of second protrusions 1132f2, those formed at the first end (end of the inlet pipe 1132a) of the first protrusion 1132f1 are for distribution of the flow rate and control of the flow rate. The liquid particles introduced into the hot water tank 1130 through the intake pipe 1132a collide with the second protrusion 1132f2, so that the flow rate of the liquid spreads in all directions. Accordingly, the liquid can be sufficiently heated in the hot water tank 1130.

Among the plurality of second protrusions 1132f2, those formed at the second end (end of the outlet pipe 1132b) of the first protrusion 1132f1 are for controlling the flow rate. If the liquids are mixed with each other before being discharged from the hot water tank 1130 by controlling the flow rate, hot water in a uniform temperature range may be provided.

The first protrusion 1132f1 and the second protrusion 1132f2 may be integrally formed by press working. When the press processing is performed considering the extension direction of the first protrusion 1132f1 and the extension direction of the second protrusion 1132f2 to the second cover 1132 having the base surface 1132c, the first protrusion 1132f1 and the second protrusion (1132f2) is integrally formed with the base surface 1132c. Since the protruding surface 1132d can also be formed by press working, the protrusion 1132f and the protruding surface 1132d can be formed simultaneously by one press processing.

The positions and numbers of the first protrusions 1132f1, the second protrusions 1132f2, and the welds 1132e may be selectively changed. The position of the projection 1132f is not particularly limited. The protrusion 1132f may be formed at a position overlapping with the temperature sensor 1181.

The working coil 1140 is disposed on one side of the hot water tank 1130. The working coil 1140 and the hot water tank 1130 are arranged to face each other at spaced apart positions. Referring to FIG. 5, the working coil 1140 may be described as being disposed at a position facing an outer surface of the first cover 1131. For convenience of description, a surface facing the second cover 1132 among the two surfaces of the first cover 1131 was divided into an inner surface, and a surface facing the working coil 1140 was divided into an outer surface. Therefore, one side of the hot water tank 1130 corresponds to a position facing the outer surface of the first cover 1131.

The working coil 1140 is formed by a conductor wound in an annular shape. The working coil 1140 is made of a single strand or multiple strands of copper or other conductors. When the working coil 1140 is made of several strands of conductors, each strand is insulated.

The working coil 1140 forms a magnetic field or a magnetic force line by a current applied to the working coil 1140. The first cover 1131 generates heat under the influence of the magnetic force line formed by the working coil 1140.

Since the hot water tank 1130 is induction heated by the working coil 1140, maintaining a constant distance between the working coil 1140 and the hot water tank (! 130) is very important for the control of the induction heating. The spacers 1151 and 1152 are disposed between the working coil 1140 and the hot water tank 1130 to maintain a constant distance between the working coil 1140 and the hot water tank 1130.

The spacers 1151 and 1152 should satisfy the following six conditions.

* In the first condition, even if the spacers 1151 and 1152 are compressed by the hot water tank 1130 and the working coil 1140, the spacers 1151 and 1152 have a constant distance between the working coil 1140 and the hot water tank 1130. It should be able to maintain. In order to accurately control the induction heating, it has been described above that the interval between the hot water tank 1130 and the working coil 1140 must be kept constant. With the spacers 1151 and 1152 disposed between the hot water tank 1130 and the working coil 1140, one surface of the spacers 1151 and 1152 is in close contact with the hot water tank 1130 and the other surface of the spacers 1151 and 1152. When in close contact with the working coil 1140, the distance between the hot water tank 1130 and the working coil 1140 is determined by the thickness of the spacers 1151 and 1152.

If the spacers 1151 and 1152 are compressed and elastically deformed by the hot water tank 1130 and the working coil 1140, the thickness of the spacers 1151 and 1152 will be thinner than before being compressed, and the hot water tank 1130 and the walking The gap between the coils 1140 cannot be kept constant. Therefore, even if the spacers 1151 and 1152 are compressed by the hot water tank 1130 and the working coil 1140, it should be able to maintain the original thickness without causing deformation.

If the spacers 1151 and 1152 have appropriate strength, even if they are compressed by the hot water tank 1130 and the working coil 1140, they do not cause elastic deformation and can maintain their original thickness. Accordingly, the first condition of the spacers 1151 and 1152 is the same as that of having a strength that does not cause deformation even when compressed by the hot water tank 1130 and the working coil 1140.

The second condition is that the spacers 1151 and 1152 must be able to maintain electrical insulation between the hot water tank 1130 and the working coil 1140. A current is applied to the working coil 1140 for induction heating. However, when the current applied to the working coil 1140 is conducted to the hot water tank 1130, it affects the induction heating of the hot water tank 1130. This is because induction heating is heating using joule heating generated by electrical resistance of the metal.

If electrical insulation between the hot water tank 1130 and the working coil 1140 is not maintained, it is difficult to accurately control induction heating of the hot water tank 1130. Since the spacers 1151 and 1152 are disposed between the hot water tank 1130 and the working coil 1140, the spacers 1151 and 1152 should be made of an electrical insulator.

The third condition is that the spacers 1151 and 1152 should be able to suppress heat transfer between the hot water tank 1130 and the working coil 1140. When a current flows through the working coil 1140, the working coil 1140 generates heat, and the hot water tank 1130 induction heated by the working coil 1140 also generates heat. Therefore, there is a risk of fire due to overheating by the two heating elements. Can be.

In addition, the induction heating module 1100 (see FIG. 4) is controlled based on the temperature measured by the temperature sensor 1181. When the temperature sensor 1181 is influenced by too many elements, it becomes increasingly difficult to accurately control the induction heating module. Therefore, in order for the induction heating module 1100 to be accurately controlled, the factors that affect the temperature sensor 1181 are as few as possible. desirable.

* However, if the heat transfer between the hot water tank 1130 and the working coil 1140 is not suppressed, since there are many factors affecting the temperature measured by the temperature sensor 1181, it becomes increasingly difficult to accurately control the induction heating module 1100. Make. Since the spacers 1151 and 1152 are disposed between the hot water tank 1130 and the working coil 1140, the spacers 1151 and 1152 should be able to suppress heat conduction between the hot water tank 1130 and the working coil 1140.

The fourth condition is that the spacers 1151 and 1152 should be made of a flame retardant material having heat resistance. Spacers 1151 and 1152 are disposed between the working coil 1140 and the hot water tank 1130, and since the temperature of the working coil 1140 and the hot water tank 1130 rises to about 150 ° C, the spacers 1151 and 1152 If it does not have heat resistance, it can be damaged by heat.

Therefore, the spacers 1151 and 1152 should be made of a flame-retardant material having a heat resistance up to at least 200 to 300 ° C so as not to be damaged even at a temperature higher than the temperature of the heated working coil 1140 and the induction heated hot water tank 1130.

To satisfy the first to fourth conditions, the spacers 1151 and 1152 may be formed of any one of mica, quartz, or glass. Mica, quartz and glass are flame retardants that can maintain their own thickness even when compressed by the hot water tank 1130 and the working coil 1140, have electrical insulation, suppress heat conduction, and have sufficient heat resistance.

In addition, the spacers 1151 and 1152 may be formed of silicon (Si) to satisfy the second to fourth conditions. Silicon is a flame retardant having electrical insulation, capable of suppressing heat conduction, and having sufficient heat resistance. However, silicone may cause elastic deformation when excessively compressed by the hot water tank 1130 and the working coil 1140. Therefore, silicon can be used as a material for the spacers 1151 and 1152 only when it is not excessively compressed by the hot water tank 1130 and the working coil 1140.

The fifth condition of the spacers 1151 and 1152 is that the spacers 1151 and 1152 must have a structure capable of passing both ends of the working coil 1140. The working coil 1140 is formed by a conducting wire in an annular shape, and the working coil 1140 is connected to an induction heating printed circuit board 1110 (see FIG. 4) at one end extending from the inside of the annular shape, and of the working coil 1140. The other end extends from the outside of the annular shape and is connected to the induction heating printed circuit board.

The spacers 1151 and 1152 are formed in an annular shape so as to correspond to the working coil 1140, and the first portions 1151a and 1152a and the second portions (covered by the hot water tank) so as to pass both ends of the working coil 1140. Jim, 1152b). The first portions 1151a and 1152a form a part of the annular shape. The second portion 1152b forms the remaining portion of the annular shape and has a narrower width than the first portions 1151a and 1152a. In particular, the second portion 1152 is recessed from the inside and the outside of the annulus, respectively, and has a narrower width than the first portions 1151a and 1152a. Accordingly, a gap through which both ends of the working coil 1140 can pass is formed on the inside and outside of the annular shape. One end of the working coil 1140 passes through the inner side of the annular shape, and the other end of the working coil 1140 passes through the outer side of the annular shape.

The sixth condition of the spacers 1151 and 1152 should be a structure in which the spacers 1151 and 1152 can cool the working coil 1140. Since the heat generated in the hot water tank 1130 by induction heating is transferred to the liquid passing through the hot water tank 1130, the hot water tank 1130 is cooled by liquid. On the other hand, the working coil 1140 is in close contact with the spacers 1151 and 1152 and the insulator 1153 to be described later, and since the spacers 1151 and 1152 and the insulator 1153 are made to suppress heat transfer, the working coil 1140 There is no object to transfer heat except silver air.

Therefore, in order to cool the working coil 1140, an area in which the working coil 1140 and the air can sufficiently contact each other should be provided. The spacers 1151 and 1152 have holes 1151c and 1152c that face the hot water tank 1130 and the working coil 1140 with each other. The holes 1151c and 1152c may be formed in the first portions 1151a and 1152a, and may be provided in plural to be spaced apart from each other along the annular spacers 1151 and 1152.

Since the working coil 1140 and the hot water tank 1130 are arranged to face each other at a spaced apart position, the working coil 1140 and the hot water tank 1130 may face each other through holes 1151c and 1152c. Since the working coil 1140 is spaced from the hot water tank 1130, the working coil 1140 may contact air through holes 1151c and 1152c. Therefore, the holes 1151c and 1152c are configured to form a contact area between the working coil 1140 and air.

Referring to FIG. 2 again, the water purifier 1000 includes a fan 1033, and the wind generated by the fan 1033 promotes air flow inside the water purifier 1000. Therefore, when the wind generated by the fan 1033 is transmitted to the working coil 1140 through the holes 1151c and 1152c, cooling of the working coil 1140 may be further promoted compared to natural convection of air.

The spacers 1151 and 1152 may be provided in plural. For example, if the distance between the hot water tank 1130 and the working coil 1140 should be kept constant at 3.5 mm, three spacers 1151 having a thickness of 1 mm and a spacer 1152 having a thickness of 0.5 mm. One sheet may be disposed between the hot water tank 1130 and the working coil 1140. The plurality of spacers 1151 and 1152 should be disposed to be in close contact with each other such that the distance between the hot water tank 1130 and the working coil 1140 is determined by the thickness of the spacers 1151 and 1152.

The insulator 1153 is disposed on the opposite side of the spacers 1151 and 1152 based on the working coil 1140. The insulator 1153 may be understood to be disposed between the working coil 1140 and the bracket 1160 described later. Like the spacers 1151 and 1152, the insulator 1153 should satisfy the following five conditions. However, conditions such as spacers 1151 and 1152 capable of maintaining a gap are not applicable to the insulator 1153.

The first condition is that the insulator 1153 should be able to maintain electrical insulation between the working coil 1140 and the core 1170. The core 1170 is intended to suppress the loss of current, and a ferrite is generally used as a material for the core 1170. Therefore, when the current applied to the working coil 1140 is transmitted to the ferrite, which is a conductive material, normal operation of the core 1170 may be prevented. Therefore, the insulator 1153 should be made of a material capable of maintaining electrical insulation.

The second condition is that the insulator 1153 should be able to suppress heat transfer between the working coil 1140 and the bracket 1160. The bracket 1160 may be formed by injection, and the injection product is generally weak to heat. Therefore, when heat generated from the working coil 1140 is transferred to the bracket 1160, the bracket 1160 may be damaged by heat. To prevent the bracket 1160 from being damaged by heat, the insulator 1153 should be made of a material capable of inhibiting heat transfer.

The third condition is that the insulator 1153 should be made of a flame retardant material having heat resistance. The reason why the insulator 1153 should be made of a flame retardant having heat resistance is the same as the reason why the spacers 1151 and 1152 should be made of a flame retardant having heat resistance.

The insulator 1153 may be formed of any one of mica, quartz, glass, or silicon (Si) to satisfy the first to third conditions. Mica, quartz, glass and silicon are flame retardants having electrical insulating properties, capable of suppressing thermal conductivity, and sufficient heat resistance. In particular, since the insulator 1153 does not require a condition related to maintaining a gap, silicon can be used as a material for the insulator 1153 without restrictions.

The fourth condition of the insulator 1153 is that the insulator 1153 should have a structure capable of passing both ends of the working coil 1140. The insulator 1153 should have a structure capable of passing both ends of the working coil 1140, which is the same as that of the spacers 1151 and 1152 having a structure capable of passing both ends of the working coil 1140. Accordingly, the insulator 1153 may have substantially the same structure as the spacers 1151 and 1152.

The insulator 1153 is formed in an annular shape to correspond to the working coil 1140, and includes a first portion 1153a and a second portion 1153b so as to pass both ends of the working coil 1140. The first portion 1153a forms a part of the annular shape. The second portion 1153b forms the remaining part of the annulus, and has a narrower width than the first portion 1153a. In particular, the second portion 1153b is recessed from the inside and the outside of the annulus, respectively, and has a narrower width than the first portion 1153a. Accordingly, a gap through which both ends of the working coil 1140 can pass is formed on the inside and outside of the annular shape. One end of the working coil 1140 passes through the inner side of the annular shape, and the other end of the working coil 1140 passes through the outer side of the annular shape.

The fifth condition of the insulator 1153 should be a structure in which the insulator 1153 can implement cooling of the working coil 1140. The reason why the insulator 1153 should be made of a structure capable of cooling the working coil 1140 is the same as the reason that the spacers 1151 and 1152 should be made of a structure capable of implementing the cooling of the working coil 1140. Like the spacers 1151 and 1152, a hole 1153c for contacting the working coil 1140 with air is also formed in the insulator 1153.

As described above, the spacers 1151 and 1152 and the insulator 1153 should satisfy substantially the same conditions except for the space maintenance condition. Therefore, the spacers 1151 and 1152 and the insulator 1153 may be made of the same material and have the same structure. The names of the spacers 1151 and 1152 and the insulator 1153 are also intended to be distinguished from each other, and the names are not to be divided into completely different structures.

The bracket 1160 is formed to fix the hot water tank 1130 inside the water purifier (see FIG. 1) body. Referring to FIG. 4 again, boss portions 1087a and 1087b (1162a and 1162b) corresponding to each other are formed on the front surface of the main printed circuit board cover 1087 and the bracket 1160. As long as they correspond to each other, the positions of the two boss portions 1087a, 1087b (1162a, 1162b) may be changed according to the design, and comparing the FIGS. 4 and 5, it can be seen that the positions of the boss portions are changed. When a screw (not shown) passes through the boss portions 1162a and 1162b of the bracket 1160 and is inserted into the boss portions 1087a and 1087b of the main printed circuit board cover 1087, the bracket 1160 is the water purifier 1000 It is fixed inside the body. Since the bracket 1160 is coupled to the hot water tank 1130, the bracket 1160 can fix the hot water tank 1130 inside the water purifier 1000 body.

Referring to FIG. 5 again, the bracket 1160 and the hot water tank 1130 are coupled to each other with the spacers 1151 and 1152, the working coil 1140, and the insulator 1153 interposed therebetween. In the bracket 1160, a plurality of boss portions 1161a, 1161b, 1161c, and 1161d are formed at positions corresponding to the edges of the hot water tank 1130. The plurality of boss portions 1161a, 1161b, 1161c, and 1161d are spaced apart from each other along a line corresponding to the rim of the hot water tank 1130. The hot water tank 1130 and the bracket 1160 are coupled to each other by screws 1800a, 1800b, 1800c, 1800d inserted into the boss portions 1161a, 1161b, 1161c, 1161d.

The heads of each screw 1800a, 1800b, 1800c, 1800d and the boss portions 1161a, 1161b, while the hot water tank 1130 and the bracket 1160 are coupled to each other by screws 1800a, 1800b, 1800c, 1800d A border of the hot water tank 1130 is disposed between 1161c and 1161d. By this structure, the hot water tank 1130 can be coupled to the bracket 1160 without having a separate hole for screw fastening.

When the bracket 1160 and the hot water tank 1130 are coupled by screws 1800a, 1800b, 1800c, 1800d, both surfaces of the spacers 1151 and 1152 are compressed by the hot water tank 1130 and the working coil 1140. Nevertheless, the reason why the bracket 1160 and the hot water tank 1130 can be combined by screws 1800a, 1800b, 1800c, 1800d is that the spacers 1151 and 1152 are the hot water tank 1130 and the working coil 1140. This is because the interval between them can be kept constant.

If the bracket 1160 and the hot water tank 1130 are closed by a screw 1800a, 1800b, 1800c, 1800d in the process, the gap between the hot water tank 1130 and the working coil 1140 is narrow, and induction heating is accurately performed. Cannot be controlled. However, since the spacers 1151 and 1152 can maintain a constant distance between the hot water tank 1130 and the working coil 1140, the brackets 1160 and the hot water tank 1130 have screws 1800a, 1800b, 1800c, 1800d. ), And there is no problem in controlling induction heating.

The bracket 1160 includes a base portion 1168, and two boss portions 1161a, 1161b, 1161c, and 1161d (1162a, 1162b) of the bracket described above are formed along the border of the base portion 1168. The plurality of hot water tank support parts 1163 protrude from the base part 1168 to support the hot water tank 1130. The hot water tank support 1163 may be formed to be spaced apart from each other along a line corresponding to the rim of the hot water tank 1130. When the rim of the hot water tank 1130 is divided into the outer side and the inner side based on the distance from the center of the hot water tank 1130, the outer side is a boss portion 1161a, 1161b, 1161c by screws 1800a, 1800b, 1800c, 1800d. , 1161d), and the inner side is supported by the hot water tank support 1130.

The bracket 1160 includes a plurality of core receiving portions 1164 arranged in a radial shape. The core accommodating portion 1164 is formed by being recessed in a direction away from the insulator 1153. The plurality of cores 1170 are inserted into each core receiving portion 1164.

The core 1170 is for suppressing the loss of electric current, and serves as a shielding film of the magnetic force line. As described above, ferrite may be used as a material of the core 1170.

The temperature sensor 1181 is configured to measure the temperature of the liquid heated in the hot water tank 1130. The bracket 1160 is formed with a temperature sensor accommodating portion 1165 formed to accommodate the temperature sensor 1181, and the temperature sensor 1181 is inserted into the temperature sensor accommodating portion 1165. Since the center of the working coil 1140 having an annular shape is empty, the temperature sensor 1181 may be disposed at the center of the working coil 1140 (or inside the annular shape).

The temperature measured by the temperature sensor 1181 is provided to the induction heating printed circuit board 1110 and the control module 1080 described in FIG. 4. The induction heating printed circuit board 1110 and the control module 1080 determine whether to further heat or stop heating based on the temperature of the liquid measured by the temperature sensor 1181. In other words, the output of the induction heating module 1100 may be determined based on the temperature measured by the temperature sensor 1181. As the temperature sensor 1181, a thermistor may be used.

The overheating prevention fuse 1182 is a safety device that cuts off power to the induction heating module 1100 when the liquid in the hot water tank 1130 is overheated. Unlike the temperature sensor 1181 is classified as a return type sensor, the overheating protection fuse 1182 may be classified as a non-return type sensor because it must be replaced once operated.

The bracket 1160 is formed with an overheat prevention fuse receiving portion 1166 formed to accommodate the overheat prevention fuse 1182, and the overheat prevention fuse 1182 is inserted into the overheat prevention fuse accommodation portion 1166. The overheating prevention fuse 1182 may be disposed in the center (or inside the annulus) of the working coil 1140 like the temperature sensor 1181. Referring to FIG. 5, the temperature sensor 1181 and the overheat prevention fuse 1182 may be disposed on one side of the temperature sensor cover 1183, and the first cover 1131 may be disposed on the other side of the temperature sensor cover 1183. have.

The bracket 1160 has a position fixing portion 1167. The position fixing portion 1167 is a base portion (along the line corresponding to the inner circumference of the annulus to fix the position of the working coil 1140, the spacers 1151, 1152 and the insulator to support the inner circumference of the working coil 1140 ( 1168). The position fixing unit 1167 may be provided in plural, and may be arranged to be spaced apart from each other.

The position of the working coil 1140, the spacers 1151, 1152 and the insulator 1153 is fixed by the position fixing part 1167 of the bracket 1160, the working coil 1140, the spacers 1151, 1152, and The insulator 1153 is in close contact with each other by the hot water tank 1130 coupled to the bracket 1160. Therefore, even if there is no additional fixing structure or sealant, the positions of the working coil 1140, the spacers 1151, 1152, and the insulator 1153 can be fixed, and the distance between the hot water tank 1130 and the working coil 1140 is constant. Can be maintained.

Furthermore, the bonding structure by the sealant may have different work results depending on the process, and it may be difficult to control induction heating according to the work result. Therefore, the coupling structure by the sealant is a structure in which mass production is disadvantageous. However, the coupling structure by screws (1800a, 1800b, 1800c, 1800d) as in the present invention is advantageous for mass production since the results of the operation do not differ depending on the process.

The silicone cover 1183 is coupled to the bracket 1160 to cover the temperature sensor 1181 and the overheat protection fuse 1182. The silicone cover 1183 may be formed to surround the outer circumferential surface of the position fixing portion 1167. For smooth temperature measurement of the temperature sensor 1181, the silicon cover 1183 may be provided with a hole.

FIG. 6 is a side view showing a configuration corresponding to line A-A of FIG. 5 to show the coupling structure of the induction heating module 1100 (see FIG. 4).

6 shows a structure in which the rim of the hot water tank 1130 is coupled to the boss portion 1161a of the bracket 1160 by a screw 1800a. The rim of the hot water tank 1130 is formed at a position corresponding to the boss portion 1161a of the bracket 1160. When the screw 1800a is fastened to the boss portion 1161a, an edge of the hot water tank 1130 is disposed between the head of the screw 1800a and the boss portion 1161a.

Referring to FIG. 6, between the first cover 1131 of the hot water tank 1130 and the base portion 1168 of the bracket 1160, an insulator 1153, a working coil 1140, and a spacer 1151, 1152 are sequentially Are stacked. The base 1168 of the bracket 1160, the insulator 1153, the working coil 1140, the spacers 1151, 1152, and the first cover 1131 are disposed to be in close contact with each other. It can be seen in FIG. 6 that the space G between the working coil 1140 and the hot water tank 1130 is kept constant by the spacer.

The water outlet pipe 1132b, the second cover 1132, the hot water tank support portion 1163, the position fixing portion 1167, the core receiving portion 1164, and the core 1170 not described in FIG. 6 are described in FIG. To replace

The water purifier described above is not limited to the configuration and method of the above-described embodiments, and the above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

Claims (14)

The water purifier,
A bracket forming an accommodation space;
An annular walking coil disposed in an accommodation space of the bracket and having an empty center portion;
Hot water fixed to the bracket is composed of a first cover having a flat plate shape formed of a metallic material and facing the working coil, and a second cover forming a flow and heating space for water coupled to the rim of the first cover Tank; And
It includes; a temperature sensor fixed by the bracket so as to be disposed in the hollow portion of the working coil;
The water purification device,
It includes a temperature sensor cover formed to cover the temperature sensor,
The temperature sensor cover has elasticity,
The temperature sensor cover is a water purification device characterized in that it has a hole to face the temperature sensor and the first cover to each other. According to claim 1,
The hot water tank is induction heated by the working coil and is formed to heat water rising from the bottom,
The temperature sensor is arranged to measure the temperature of the water heated while being filled in the hot water tank. According to claim 1,
The hot water tank,
An inlet pipe coupled to a lower portion of the second cover; And
It includes a water outlet pipe coupled to the upper portion of the second cover to have a height difference with the inlet pipe,
The temperature sensor is a water purifying device, characterized in that installed to correspond to the intermediate height of the inlet pipe and the outlet pipe. According to claim 1,
The bracket has a temperature sensor accommodating portion formed to accommodate the temperature sensor,
The temperature sensor accommodating portion is a water purifying device, characterized in that protrudes from one surface of the bracket toward the hollow portion of the working coil. The method of claim 4,
The temperature sensor accommodating portion is composed of two ribs protruding toward the hollow portion of the working coil,
The temperature sensor is a water purification device, characterized in that disposed between the two ribs. According to claim 1,
The bracket is a water purification device characterized in that it has a hole in a position facing the temperature sensor. delete According to claim 1,
The temperature sensor cover is a water purification device, characterized in that disposed between the temperature sensor and the first cover. According to claim 1,
A first portion disposed between the temperature sensor and the first cover to cover the temperature sensor; And
A water purifying device further comprising an insulator extending from the rim of the first portion toward the bracket and surrounding the temperature sensor at a position spaced apart from the temperature sensor. delete According to claim 1,
The temperature sensor cover is a water purification device, characterized in that formed of a silicon material. According to claim 1,
The second cover,
A base surface disposed to face the first cover at a position spaced apart from the first cover to form a flow space and a flow of water;
A protruding surface protruding from the base surface toward the second cover; And
And a welding portion for welding the projecting surface and the inner surface of the central portion of the first cover to each other by welding. The method of claim 12,
The second cover further includes a protrusion protruding from the base surface toward the first cover,
The degree of separation of the projections from the first cover is a water purifying device, characterized in that between the base surface and the protruding surface. The method of claim 13,
The hot water tank,
An inlet pipe coupled to one side of the second cover; And
It includes an outlet pipe coupled to the other side of the second cover,
The projection,
A first protrusion extending toward the inlet pipe and the outlet pipe; And
And a second protrusion extending in a direction intersecting the extending direction of the first protrusion.

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