Patent Description:
A cold water generating apparatus is an apparatus cold water, transforming water into cold water, and supplying the cold water to a user. Among such cold water manufacturing apparatuses, a method in which a heat transfer medium such as ice water is stored therein and a portion of a cold water pipe through which water flows is immersed in the heat transfer medium is also used.

Conventionally, in a cold water generating apparatus having such a configuration, a cooling unit cools a heat transfer medium and cools water flowing through a cold water pipe, transforms it into cold water, and supplies it to a user. As described above, in the conventional cold water generating apparatus, cooling efficiency of the cold water generating apparatus may be inefficient because the water flowing through the cold water pipe is indirectly cooled by the heat transfer medium instead of being directly cooled by the cooling unit.

In addition, in order to cool a larger amount of water, an amount of heat transfer medium is increased and a length of the cold water pipe immersed in the heat transfer medium must be increased.

Meanwhile, in order to reduce a size of the cold water generating apparatus, a method of using a thermoelectric element, rather than ice water, as a cold water generating apparatus, has been proposed. European Patent Publication No. <CIT> "Cold water Tank and Water Treatment Apparatus Having the Same" of the present applicant discloses a cold water generating apparatus using a thermoelectric element.

According to this method, since the thermoelectric element in thermal contact with the tank cools water stored in the tank, the size of the cold water generating apparatus can be reduced. However, since it is necessary to cool a large amount of water stored in the tank, it is difficult to cool water located distantly from a surface of the tank, so the cooling efficiency is lowered, and there may be a problem that the time for which the cold water remains in the tank is relatively long.

<CIT> discloses a cold water generating apparatus. The container is not connected to the heat exchanger, so water does not flow from the container to the heat exchanger, which makes cold water generation inefficient.

<CIT> and <CIT> each disclose a cold water generating apparatus for generating cold water.

The present disclosure has been made in recognition of at least one of the needs or problems occurring in the prior art as described above.

An aspect of the present disclosure is to provide a cold water generating apparatus and a method of manufacturing the same, wherein in the cold water generating apparatus, cold water generation efficiency is improved while the size of the cold water generating apparatus is reduced.

The present invention provides a cold water generating apparatus as defined in the independent claim <NUM> and a method of manufacturing said cold water generating apparatus, as defined in the independent claim <NUM>.

A cold water generating apparatus, includes: an apparatus body; a water tank which is provided in the apparatus body and which accommodates water flowing in from a water supply source; a cold water generation pipe which is provided in the apparatus body so as to be connected to the water tank, and which allows the water accommodated in the water tank to flow thereto, to then be discharged; and a cooling unit which is mounted on an outer surface of the apparatus body, and which cools the apparatus body so that the water accommodated in the water tank and the water flowing in the cold water generation pipe is cooled, wherein the apparatus body has a tank insertion space having one open side so that at least a portion of the water tank is inserted thereinto, wherein the water tank includes a tank main body which is inserted into the tank insertion space and having one open side, and a tank cover which is coupled to the apparatus body so as to cover the one open side of the tank main body, and having an inlet which allows water from the water supply source to flow into the tank main body and a connector connected to the cold water generation pipe, wherein the apparatus body and the water tank include a material having thermal conductivity of 10W(m. K) or higher at room temperature.

In addition, the apparatus body and the cold water generation pipe are made of metal, and the apparatus body and the cold water generation pipe are integrally formed by die casting. Furthermore the connector of the tank cover is connected to the cold water generation pipe by a fitting member so that the water from a water supply source is primarily cooled in the water tank and the primarily-cooled water is cooled secondarily in the cold water generation pipe during a water outflow process.

In addition, the cold water generation pipe may be disposed on the apparatus body to surround the tank insertion space.

The cold water generation pipe may be formed to have a spiral shape on a side surface of the apparatus body so as to surround the tank insertion space of the apparatus body.

In addition, the cooling unit may include a thermoelectric module installed so that a cooling side thereof is in contact with a cold sink unit formed on the apparatus body.

The cooling unit may further include a heat transfer member connected to be in contact with a heating side of the thermoelectric module, a heating pipe having one side thereof connected to the heat transfer member, a heat sink in which the other side of the heating pipe is connected, and a blowing fan provided in the heat sink.

In addition, the cold water generating apparatus according to an embodiment of the present disclosure may further include a heat insulating member surrounding the apparatus body and the tank cover.

A method of manufacturing a cold water generating apparatus includes: an operation of preparing a cold water generation pipe; an operation of integrally forming the cold water generation pipe inside side parts of an apparatus body having a tank insertion space having one open side and a cold sink unit on a side surface, by performing die casting, wherein the cold water generation pipe is configured to surround the tank insertion space; and an operation of installing of inserting and installing a water tank into the tank insertion space, and connecting and installing a cooling unit to the cold sink unit, wherein the apparatus body and the water tank are formed of a material having thermal conductivity of 10W/(m·K) or more at room temperature, wherein in the installation operation, a tank main body included in the water tank is inserted into the tank insertion space, and a tank cover having an inlet and a connector is connected to the apparatus body so as to cover one open side of the tank main body, and in the installation operation, the connector of the tank cover is connected to one side of the cold water generation pipe by a fitting member so that the water from a water supply source is primarily cooled in the water tank and the primarily-cooled water is cooled secondarily in the cold water generation pipe during a water outflow process.

According to the present invention, the apparatus body and the cold water generation pipe are made of metal.

In addition, the cold water generation pipe may have a spiral shape.

In the installation operation, it is possible to connect the connector and one side of the cold water generation pipe.

In addition, in the installation operation, after inserting the tank main body into the tank insertion space, a heat insulating body unit included in the heat insulating member is provided to surround a portion of the apparatus body, and after the connector and one side of the cold water generation pipe are connected, a heat insulating cover unit is provided to surround a rest of the apparatus body and the tank cover.

The cooling unit may include a thermoelectric module installed so that a cooling side thereof is in contact with the cold sink unit.

In addition, the cooling unit may further include a heat transfer member connected to be in contact with a heating side of the thermoelectric module, a heating pipe having one side thereof connected to the heat transfer member, a heat sink in which the other side of the heating pipe is connected, and a blowing fan provided in the heat sink.

According to an embodiment of the present disclosure, it is possible to obtain an effect that cold water generation efficiency is improved while the size of the cold water generating apparatus is reduced.

In order to help the understanding of the features of the present disclosure as described above, a cold water generating apparatus and a method for manufacturing the same related to an embodiment of the present disclosure will be described in more detail below.

Hereinafter, embodiments in the present disclosure will be described hereinafter with reference to the accompanying drawings. The disclosure may, however, be exemplified in many different forms and should not be construed as being limited to the specific embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the same reference numerals will be used throughout to designate the same or like elements, and the shapes and dimensions of elements may be exaggerated for clarity. In addition, the same reference numerals will be used throughout the drawings for elements having the same or similar functions and operations.

Hereinafter, an embodiment of a cold water generating apparatus according to the present disclosure will be described with reference to <FIG>.

<FIG> is a front perspective view of an embodiment of a cold water generating apparatus according to the present disclosure, and <FIG> is a rear perspective view of an embodiment of a cold water generating apparatus according to the present disclosure.

In addition, <FIG> is a perspective view illustrating separation of a heat insulating member in an embodiment of the cold water generating apparatus according to the present disclosure, and <FIG> is an exploded perspective view of an embodiment of the cold water generating apparatus according to the present disclosure except for the heat insulating member.

<FIG> and <FIG> are views illustrating an operation of an embodiment of the cold water generating apparatus according to the present disclosure, and are cross-sectional views taken along lines I-I' and II-II' of <FIG>, respectively.

According to the present invention, the cold water generating apparatus includes an apparatus body <NUM>, a water tank <NUM>, a cold water generation pipe <NUM>, and a cooling unit <NUM>.

As shown in <FIG>, a tank insertion space <NUM> having one open side is formed in the apparatus body <NUM>. At least a portion of the water tank <NUM>, for example, the tank main body <NUM> of the water tank <NUM> is inserted into the tank insertion space <NUM> through the one open side of the tank insertion space <NUM>. Accordingly, when the apparatus body <NUM> is cooled by the cooling unit <NUM>, the water in the water tank <NUM> is cooled.

A cold sink unit <NUM> may be formed in the apparatus body <NUM> as shown in <FIG> and <FIG>. The cooling unit <NUM> may be connected to the cold sink unit <NUM>. Accordingly, when the cooling unit <NUM> cools the cold sink unit <NUM>, the apparatus body <NUM> may be cooled. For example, the cold sink unit <NUM> may be installed so that a cooling side of the thermoelectric module <NUM> included in the cooling unit <NUM> is in contact. When electricity is applied to the thermoelectric module <NUM>, the cold sink unit <NUM> may be cooled to cool the apparatus body <NUM>. In addition, the cooling unit <NUM> may include an evaporation tube (not shown) through which a refrigerant flows. In this case, the evaporation tube may be provided on the apparatus body <NUM> to surround the apparatus body <NUM>, or may be configured to be integrally formed with the apparatus body <NUM> to cool the apparatus body <NUM>.

The apparatus body <NUM> is made of metal. For example, such a material may be exemplified by aluminum, gold, copper, silver, graphene, or the like having thermal conductivity of <NUM> W/ (m·K) or more at room temperature. As described above, when the apparatus body <NUM> is made of a material having high thermal conductivity, cooling of the apparatus body <NUM> by the cooling unit <NUM> can be made faster. In addition, as will be described later, the apparatus body <NUM> is integrally formed with the cold water generation pipe <NUM> made of metal by die casting.

The water tank <NUM> is provided in the apparatus body <NUM>. As described above, a tank insertion space <NUM> having one open side is formed in the apparatus body <NUM>, and at least a portion of the water tank <NUM> is inserted into the tank insertion space <NUM> through the open side of the tank insertion space <NUM>, such that the water tank <NUM> is provided in the apparatus body <NUM>. Accordingly, in an embodiment of the cold water generating apparatus <NUM> according to the present disclosure, a size thereof may be reduced. However, the configuration in which the water tank <NUM> is provided in the apparatus body <NUM> is not particularly limited, and any known configuration is possible.

The water tank <NUM> is connected to a water supply source (not shown) such as water supply, or the like. Accordingly, water from the water supply source is introduced into and accommodated in the water tank <NUM> as shown in <FIG> and <FIG>. For example, as shown in <FIG>, the water tank <NUM> includes an inlet <NUM> connected to a water supply source by a connecting pipe (not shown). In addition, water from the water supply source flows to the inlet <NUM> through the connection pipe and is introduced into the water tank <NUM> through the inlet <NUM>.

The water tank <NUM> may be made of a material having high thermal conductivity, such as metal. For example, such a material may include aluminum, gold, copper, silver, graphene, or the like having a thermal conductivity of <NUM> W/(m·K) or more at room temperature. However, since water is accommodated in the water tank <NUM>, it is preferable to use, for example, stainless steel in consideration of the lack of corrosiveness thereof.

The water tank <NUM> includes a tank main body <NUM> and a tank cover <NUM> as shown in <FIG>.

The tank main body <NUM> is inserted into the tank insertion space <NUM> through one open side of the tank insertion space <NUM> of the apparatus body <NUM>. A storage space <NUM> may be formed inside the tank main body <NUM>. Water from the water supply source may be introduced into the storage space <NUM> of the tank main body <NUM> through the inlet <NUM>.

The tank cover <NUM> is connected to the apparatus body <NUM> so as to cover one open side of the tank main body <NUM>, for example, one open side of the storage space <NUM> of the tank main body <NUM>. For example, a cover connecting unit <NUM> may be formed in the apparatus body <NUM> as shown in <FIG> and <FIG>. In addition, a body connecting unit <NUM> connected to the cover connecting unit <NUM> may be formed in the tank cover <NUM>. As shown in <FIG> and <FIG>, in a state in which the body connecting unit <NUM> of the tank cover <NUM> is located in the cover connecting unit <NUM>, the body connecting unit <NUM> and the cover connecting unit <NUM> may be connected by a bolt BT, to be connected to the apparatus body <NUM> such that the tank cover <NUM> covers the open side of the tank main body <NUM>. However, the configuration in which the tank cover <NUM> is connected to the apparatus body <NUM> so as to cover the one open side of the tank main body <NUM> is not particularly limited, and any known configuration is possible.

The tank cover <NUM> is provided with an inlet <NUM> and a connector <NUM> as shown in <FIG>. The inlet <NUM> is connected to a water supply source such as water supply, or the like, by a connection pipe. Accordingly, water of the water supply source may flow through the connection pipe, and as shown in <FIG> and <FIG>, the water may be introduced into the storage space <NUM> of the tank main body <NUM> through the inlet <NUM>. The connector <NUM> is connected to the cold water generation pipe <NUM>. Accordingly, water in the storage space <NUM> of the tank main body <NUM> is introduced into the cold water generation pipe <NUM> through the connector <NUM>. The connector <NUM> is connected to the cold water generation pipe <NUM> by a fitting member FT.

As shown in <FIG>, the tank cover <NUM> may be provided with a temperature sensor ST capable of measuring a temperature of water in the storage space <NUM> of the tank main body <NUM>.

The cold water generation pipe <NUM> is provided in the apparatus body <NUM> to be connected to the water tank <NUM>. As shown in <FIG> and <FIG>, the water accommodated in the water tank <NUM> flows into the cold water generation pipe <NUM> to then be discharged.

The cold water generation pipe <NUM> is formed integrally with the apparatus body <NUM>. Accordingly, in an embodiment of the cold water generating apparatus <NUM> according to the present disclosure, a size thereof may be reduced. According to the present invention, the cold water generation pipe <NUM> and the apparatus body <NUM> are made of metal, and the cold water generation pipe <NUM> are integrally formed with the apparatus body <NUM> by die casting.

The cold water generation pipe <NUM> may be made of, for example, stainless steel. However, the metal constituting the cold water generation pipe <NUM> is not particularly limited, and any metal may be used as long as it can be formed integrally with the apparatus body <NUM> by die casting.

In this case, as shown in <FIG> and <FIG>, the cold water generation pipe <NUM> may be disposed in the apparatus body <NUM> to surround the tank insertion space <NUM> of the apparatus body <NUM>. Accordingly, when the apparatus body <NUM> is cooled by the cooling unit <NUM> and the water flowing through the cold water generation pipe <NUM> is cooled, the apparatus body <NUM> is cooled by the water flowing through the cold water generation pipe <NUM>. Water in the water tank <NUM> inserted into the tank insertion space <NUM> may be cooled. Accordingly, the water in the water tank <NUM> may be cooled not only by cooling the apparatus body <NUM> with the cooling unit <NUM>, but also with the water flowing through the cold water generation pipe <NUM>. Accordingly, in an embodiment of the cold water generating apparatus <NUM> according to the present disclosure, cold water generation efficiency can be improved. The cold water generation pipe <NUM> may be formed to have a spiral shape on a side surface of the apparatus body <NUM> so as to surround the tank insertion space <NUM> of the apparatus body <NUM> as shown in <FIG>. Accordingly, a heat transfer area between the cold water generation pipe <NUM> and the apparatus body <NUM> may be increased, and heat transfer between the water flowing through the cold water generation pipe <NUM> and the water in the water tank <NUM> may be smoothly performed. Therefore, cooling of the water flowing through the cold water generation pipe <NUM> by cooling the apparatus body <NUM> of the cooling unit <NUM> and cooling of the water in the water tank <NUM> by the water flowing through the cold water generation pipe <NUM> may be done faster. Also thereby, in an embodiment of the cold water generating apparatus <NUM> according to the present disclosure, the cold water generation efficiency can be improved.

The cooling unit <NUM> is provided in the apparatus body <NUM> to cool the apparatus body <NUM>. As described above, as the apparatus body <NUM> is cooled by the cooling unit <NUM>, the water accommodated in the water tank <NUM> and the water in the cold water generation pipe <NUM> is cooled. Accordingly, the water from a water supply source is primarily cooled in the water tank <NUM> and the primarily-cooled water is cooled secondarily in the cold water generation pipe <NUM> during a water outflow process to become cold water below a predetermined temperature. As described above, since the water of the water supply source is cooled primarily in the water tank <NUM> and secondarily cooled in the cold water generation pipe <NUM>, in an embodiment of the cold water generating apparatus <NUM> according to the present disclosure, not only a size thereof may be reduced, but also the cold water generation efficiency may be improved.

The cooling unit <NUM> may further include a heat transfer member <NUM>, a heating pipe <NUM>, a heat sink (not shown), and a blowing fan (not shown). The heat transfer member <NUM> may be connected to be in contact with a heating side of the thermoelectric module <NUM>. In addition, one side of the heating pipe <NUM> may be connected to the heat transfer member <NUM>. In addition, the other side of the heating pipe <NUM> may be connected to the heat sink. In addition, the blowing fan may be provided in the heat sink. Accordingly, heat generated from the heating surface of the thermoelectric module <NUM> may be transferred to the heat sink through the heat transfer member <NUM> and the heating pipe <NUM> to be dissipated by the heat sink and the blowing fan. In addition, since the heat sink provided with the blowing fan does not directly contact the heating surface of the thermoelectric module <NUM>, but is connected to the heating side of the thermoelectric module <NUM> through the heating pipe <NUM>, a degree of freedom of installation can be increased.

A configuration of the cooling unit <NUM> is not particularly limited, and as long as the configuration is a configuration that can be provided in the apparatus body <NUM> such as including an evaporation tube through which a refrigerant flows so that the water in the water tank <NUM> and the water flowing through the cold water generation pipe <NUM> are cooled by cooling the apparatus body <NUM>, any well-known configuration is possible.

In an embodiment of the cold water generating apparatus <NUM> according to the present disclosure, a heat insulating member <NUM> may further be included. As shown in <FIG> and <FIG> and <FIG> and <FIG>, the heat insulating member <NUM> may be configured to surround the apparatus body <NUM>, a tank cover <NUM> of the water tank <NUM>. Thereby, it is possible to prevent external heat from being transmitted to the water flowing through the water tank <NUM> and the cold water generation pipe <NUM> through the apparatus body <NUM> and the tank cover <NUM> of the water tank <NUM>.

As shown in <FIG> and <FIG> and <FIG>, the heat insulating member <NUM> may include a heat insulating body unit <NUM> and a heat insulating cover unit <NUM>. The heat insulating body unit <NUM> may be configured to surround the apparatus body <NUM>. The heat insulating cover unit <NUM> may be connected to the heat insulating body unit <NUM> to surround the tank cover <NUM> of the water tank <NUM>.

As shown in <FIG>, a sink exposing hole <NUM> may be formed in the heat insulating body unit <NUM>. As shown in <FIG> through the sink exposing hole <NUM>, the cold sink unit <NUM> of the apparatus <NUM> may be exposed externally so that the cooling unit <NUM> may be provided in the cold sink unit <NUM> of the apparatus body <NUM>.

As shown in <FIG>, a member exposing hole <NUM> may be formed in the heat insulating cover unit <NUM>. Through the member exposing hole <NUM>, as shown in <FIG> and <FIG>, an inlet <NUM> of the tank cover <NUM> of the water tank <NUM>, a fitting member FT connecting a connector <NUM> of the tank cover <NUM> of the water tank <NUM> and one side of the cold water generation pipe <NUM>, or the other side of the cold water generation pipe <NUM> may be exposed externally.

Hereinafter, an embodiment of a method for manufacturing a cold water generating apparatus according to the present disclosure will be described with reference to <FIG>.

<FIG> are views illustrating an embodiment of a method of manufacturing a cold water generating apparatus according to the present disclosure.

An embodiment of the method of manufacturing a cold water generating apparatus according to the present disclosure includes a preparation operation (S100), a body forming operation (S200), and an installation operation (S300).

In the preparation operation (S100), a cold water generation pipe <NUM> as shown in <FIG> is prepared. In embodiments that do not fall within the scope of the present claimed invention, the cold water generation pipe <NUM> may be formed by bending a pipe generated by extrusion, drawing, or the like, into a predetermined shape.

In the body formation operation (S200), as shown in <FIG>, the apparatus body <NUM> in which the tank insertion space <NUM> and the cold sink unit <NUM> are formed is made integrally with the cold water generation pipe <NUM>. The apparatus body <NUM> and the cold water generation pipe <NUM> are made of a material having thermal conductivity of <NUM> W/ (m·K) or more at room temperature, and are of metal. In the body formation operation (S200), the apparatus body <NUM> is made to be integrated with the cold water generation pipe <NUM> by die casting. For example, the apparatus body <NUM> may be made of aluminum, and the cold water generation pipe <NUM> may be made of stainless steel. By aluminum die casting with a mold (not shown) capable of making the apparatus body <NUM> in which the tank insertion space <NUM> and the cold sink unit <NUM> are formed, the apparatus body <NUM> is made to be integrated with the cold water generation pipe <NUM>.

In the body formation operation (S200), the cold water generation pipe <NUM> surrounds the tank insertion space <NUM>. For example, in a state in which the cold water generation pipe <NUM> surrounds a portion of the mold that becomes the tank insertion space <NUM> of the apparatus body <NUM>, by aluminum die casting, the cold water introduction pipe <NUM> may surround the tank insertion space <NUM>. In this case, the cold water introduction pipe <NUM> may have, for example, a spiral shape. However, the shape of the cold water introduction pipe <NUM> is not particularly limited, and any shape is possible as long as it can surround the tank insertion space <NUM>.

In the installation operation (S300), the water tank <NUM> may be inserted into the tank insertion space <NUM> and the cooling unit <NUM> connected to the cold sink unit <NUM>.

In the installation operation (S300), as shown in <FIG>, the tank main body <NUM> of the water tank <NUM> is inserted into the tank insertion space <NUM>, and as shown in <FIG>, the tank cover <NUM> of the water tank <NUM> is connected to the apparatus body <NUM> to cover one open side of the tank main body <NUM>.

In the installation operation (S300), as shown in <FIG>, a connector <NUM> of a tank cover <NUM> and one side of the cold water generation pipe <NUM> are connected. By a fitting member FT, the connector <NUM> of the tank cover <NUM> and one side of the cold water generation pipe <NUM> are connected.

In the installation operation (S300), as shown in <FIG>, after inserting the tank main body <NUM> of the water tank <NUM> into the tank insertion space <NUM> of the apparatus body <NUM>, a heat insulating body <NUM> of a heat insulating member <NUM> may surround a portion of the apparatus body <NUM>. In this case, the cold sink unit <NUM> of the apparatus body <NUM> may be exposed through a sink exposing hole <NUM> of the heat insulating body <NUM>. In the installation step (S300), as shown in <FIG>, after the connector <NUM> of the tank cover <NUM> and one side of the cold water generation pipe <NUM> are connected, the heat insulating cover unit <NUM> of the heat insulating member <NUM> may be configured to surround a rest of the apparatus body <NUM> and the tank cover <NUM> of the water tank <NUM>. In this case, an inlet <NUM> of the tank cover <NUM> of the water tank <NUM>, a fitting member FT connecting the connector <NUM> of the tank cover <NUM> of the water tank <NUM> and one side of the cold water generation pipe <NUM>, the other side of the cold water generation pipe, or the like may be exposed through the member exposing hole <NUM> of the heat insulating cover unit <NUM>.

The cooling unit <NUM> may include a thermoelectric module <NUM>. The thermoelectric module <NUM> may be installed so that a cooling surface thereof is in contact with the cold sink unit <NUM> of the apparatus body <NUM>.

The cooling unit <NUM> may further include a heat transfer member <NUM>, a heating pipe <NUM>, a heat sink, and a blowing fan. The heat transfer member <NUM> may be connected to be in contact with a heating side of the thermoelectric module <NUM>. In addition, one side of the heating pipe <NUM> may be connected to the heat transfer member <NUM>. In addition, the other side of the heating pipe <NUM> may be connected to the heat sink. In addition, the blowing fan may be provided in the heat sink.

The configuration of the cooling unit <NUM> is not particularly limited, and as long as it is provided in the apparatus body <NUM> to cool the apparatus body <NUM>, such as including an evaporation tube through which refrigerant flows, and any known configuration is possible.

As described above, by using the cold water generating apparatus and a method of manufacturing the same according to the present disclosure, a size of the cold water generating apparatus may be reduced, and cold water generation efficiency of the cold water generating apparatus may be improved.

The cold water generating apparatus and a method of manufacturing the same are not limited to the configuration of the above-described embodiment, but the above embodiments may be configured by selectively combining all or part of each of the embodiments so that various modifications can be made.

Claim 1:
A cold water generating apparatus (<NUM>), comprising:
an apparatus body (<NUM>); a water tank (<NUM>) which is provided in the apparatus body (<NUM>) and which accommodates water flowing in from a water supply source; a cold water generation pipe (<NUM>) which is provided in the apparatus body (<NUM>) so as to be connected to the water tank (<NUM>), and which allows the water accommodated in the water tank (<NUM>) to flow thereto, to then be discharged; and a cooling unit (<NUM>) which is mounted on an outer surface of the apparatus body (<NUM>), and which cools the apparatus body (<NUM>) so that the water accommodated in the water tank (<NUM>) and the water flowing in the cold water generation pipe (<NUM>) is cooled,
wherein the apparatus body (<NUM>) has a tank insertion space (<NUM>) having one open side so that at least a portion of the water tank (<NUM>) is inserted thereinto,
the water tank (<NUM>) includes a tank main body (<NUM>) which is inserted into the tank insertion space (<NUM>) and having one open side, and a tank cover (<NUM>) which is coupled to the apparatus body (<NUM>) so as to cover the one open side of the tank main body (<NUM>), and having an inlet (<NUM>) which allows water from the water supply source to flow into the tank main body (<NUM>) and a connector (<NUM>) connected to the cold water generation pipe (<NUM>),
the apparatus body (<NUM>) and the water tank (<NUM>) include a material having thermal conductivity of <NUM> W/(m·K) or higher at room temperature, characterized in that
the apparatus body (<NUM>) and the cold water generation pipe (<NUM>) are made of metal, and the apparatus body (<NUM>) and the cold water generation pipe (<NUM>) are integrally formed by die casting, the connector (<NUM>) of the tank cover (<NUM>) is connected to the cold water generation pipe (<NUM>) by a fitting member (FT) so that the water from a water supply source is primarily cooled in the water tank (<NUM>) and the primarily-cooled water is cooled secondarily in the cold water generation pipe (<NUM>) during a water outflow process.