Coffee brewing device including water heater supplying heated water based on siphon principle

Abstract

A coffee extraction device is disclosed that includes a water heating unit that supplies water heated based on the siphon principle. A coffee extraction device according to one embodiment of the present disclosure comprises: a water supply unit that supplies water; a water heating unit that heats the water supplied from the water supply unit; and a coffee extraction module that is provided to allow coffee powder to be introduced and extracts coffee using the water heated by the water heating unit and the coffee powder. The water heating unit may include: an outer heating unit housing that forms an outer shape; a heating unit inlet pipe provided at the bottom of the outer heating unit housing and into which water flows; a heater that heats the water flowing in from the heating unit inlet pipe; and a heating unit outlet pipe provided at the top of the outer heating unit housing and into which water heated by the heater is discharged upward.

Description

Technology Field

[0001] The present disclosure relates to a coffee brewing device comprising a water heating unit that supplies heated water based on the siphon principle, and more specifically, to a device that efficiently performs water heating and coffee brewing by including a water supply unit, a water heating unit, and a coffee brewing module. Background Technology

[0002] Coffee is a beverage made by processing and extracting coffee beans, which are the seeds of the fruit that grows on the coffee tree (Coffea). Due to its distinctive flavor and caffeine content, coffee has established itself as a globally beloved drink. Coffee is broadly classified according to the variety of beans (Arabica, Robusta, etc.), the processing method (washed, natural, etc.), and the degree of roasting (light, medium, dark). It is consumed in various forms, such as espresso, drip coffee, and latte.

[0003] Meanwhile, the siphon principle is a physical principle that utilizes gravity and pressure differences to move fluid between two containers.

[0004] Specifically, the siphon principle can refer to the principle in which a continuous fluid flow is formed in the fluid inside the siphon tube under conditions where the gravitational potential energy at both ends of the siphon tube is different, and the fluid moves from the side with higher potential energy to the other side.

[0005] By utilizing the siphon principle, it becomes possible to efficiently move fluids (e.g., water or coffee) without external power based on a simple structure. Prior art literature

[0006] Registered Patent Publication No. 10-0796015 The problem to be solved

[0007] The present disclosure aims to solve all the problems of the aforementioned prior art.

[0008] In addition, the present disclosure has another objective of providing a coffee extraction device comprising a water supply unit for supplying water, a water heating unit for heating water supplied from the water supply unit, and a coffee extraction module for extracting coffee using water heated by the water heating unit and coffee powder, wherein the water heating unit comprises an outer heating unit housing forming an external shape, a heating unit inlet pipe provided at the bottom of the outer heating unit housing for water to flow in, a heater for heating water flowing in from the heating unit inlet pipe, and a heating unit outlet pipe provided at the top of the outer heating unit housing for discharging water heated by the heater upward.

[0009] In addition, another objective of the present disclosure is to provide an improved structure that effectively controls the flow of water and the discharge of heated water based on the siphon principle, thereby enabling stable extraction of high-quality coffee.

[0010] In addition, another objective of the present disclosure is to extract coffee with a simpler structure by discharging heated water based on the siphon principle without a separate power source and extracting coffee based thereon.

[0011] The purposes of the present disclosure are not limited to those mentioned above, and other purposes and advantages of the present disclosure not mentioned may be understood from the following description and will be more clearly understood from the embodiments of the present disclosure. Furthermore, it will be readily apparent that the purposes and advantages of the present disclosure can be realized by the means and combinations thereof set forth in the claims. means of solving the problem

[0012] A coffee extraction device according to one embodiment of the present disclosure may include a water supply unit for supplying water, a water heating unit for heating water supplied from the water supply unit, and a coffee extraction module configured to allow coffee powder to be introduced and to extract coffee using water heated by the water heating unit and the coffee powder. Here, the water heating unit may include an outer heating unit housing forming an outer shape, a heating unit inlet pipe provided at the bottom of the outer heating unit housing for water to flow in, a heater for heating water flowing in from the heating unit inlet pipe, and a heating unit outlet pipe provided at the top of the outer heating unit housing for water heated by the heater to be discharged upward.

[0013] Additionally, the water heating unit may include an inner heating unit housing provided inside the outer heating unit housing and covering the heater, and a heating space defined as the space between the outer heating unit housing and the inner heating unit housing, in which water introduced from the heating unit inlet pipe is heated.

[0014] Additionally, the water supply unit may include a supply unit housing that is provided to receive water and has a water level of a first height, and a supply unit discharge pipe that is provided to discharge water downward from the supply unit housing and communicates with the heating unit inlet pipe.

[0015] In addition, the inner heating housing may have a longitudinal direction intersecting the ground and the upper end connected to the heating space may be formed at a second height lower than the first height.

[0016] Additionally, the heating unit discharge pipe may include a first heating pipe member communicating with the heating space and allowing water in the heating space to flow upward, and a second heating pipe member communicating with the first heating pipe member, formed integrally with the first heating pipe member by bending the first heating pipe member, arranged in a direction intersecting the first heating pipe member, and discharging heated water to the coffee extraction module.

[0017] Additionally, the coffee extraction module may include a coffee powder receiving section in which coffee powder is received and water heated by the water heating section is mixed to extract coffee, and a coffee receiving section in which coffee discharged downward from the coffee powder receiving section is received.

[0018] Additionally, the coffee extraction module may include a tubular coffee discharge pipe formed in an elongated shape and arranged to allow coffee to flow inside, and a coffee discharge section that allows coffee introduced from the coffee receiving section to be discharged to the outside along the coffee discharge pipe based on the siphon principle.

[0019] Additionally, the coffee receiving portion may be provided so that the coffee received inside can be received up to a third height, and the coffee dispensing portion may be formed such that the highest height of the coffee's movement path along the coffee dispensing pipe is lower than the third height. Effects of the invention

[0020] According to the present disclosure, a coffee extraction device can be provided comprising a water supply unit for supplying water, a water heating unit for heating water supplied from the water supply unit, and a coffee extraction module for extracting coffee using water heated by the water heating unit and coffee powder, wherein the water heating unit comprises an outer heating unit housing forming an outer shape, a heating unit inlet pipe provided at the bottom of the outer heating unit housing for water to flow in, a heater for heating water flowing in from the heating unit inlet pipe, and a heating unit outlet pipe provided at the top of the outer heating unit housing for discharging water heated by the heater upward.

[0021] In addition, according to the present disclosure, an improved structure can be provided to stably extract high-quality coffee by effectively controlling the flow of water and the discharge of heated water based on the siphon principle.

[0022] In addition, according to the present disclosure, water heated based on the siphon principle is discharged without a separate power source, and coffee is extracted based on this, thereby enabling coffee to be extracted with a simpler structure. Brief explanation of the drawing

[0023] FIG. 1 is a block diagram conceptually illustrating the components of a coffee extraction device according to one embodiment of the present disclosure. FIG. 2 is a block diagram conceptually illustrating the components of a coffee extraction device according to one embodiment of the present disclosure. FIG. 3 is a drawing illustrating an exemplary coffee extraction device according to one embodiment of the present disclosure. FIG. 4 is a drawing exemplarily illustrating a water supply unit and a water heating unit according to one embodiment of the present disclosure. FIG. 5 is a drawing exemplarily illustrating a water heating unit according to one embodiment of the present disclosure. FIG. 6 is a drawing illustrating an exemplary coffee extraction module according to one embodiment of the present disclosure. FIG. 7 is a drawing exemplarily illustrating a siphon module and a coffee powder receiving portion according to one embodiment of the present disclosure. FIG. 8 is a drawing exemplarily illustrating a coffee receiving part and a coffee dispensing part according to one embodiment of the present disclosure. FIG. 9 is a drawing exemplarily illustrating a coffee receiving part and a coffee dispensing part according to one embodiment of the present disclosure. Specific details for implementing the invention

[0024] The embodiments described herein are subject to various modifications and may have various forms; specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the scope of specific embodiments and should be understood to include various modifications, equivalents, and / or alternatives of the embodiments of the present disclosure. In relation to the description of the drawings, similar reference numerals may be used for similar components.

[0025] In describing the present disclosure, if it is determined that a detailed description of related known functions or configurations could unnecessarily obscure the essence of the present disclosure, such detailed description is omitted.

[0026] Additionally, the following embodiments may be modified in various other forms, and the scope of the technical concept of the present disclosure is not limited to the following embodiments. Rather, these embodiments are provided to make the present disclosure more faithful and complete and to fully convey the technical concept of the present disclosure to those skilled in the art.

[0027] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit the scope of the rights. The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0028] In the present disclosure, expressions such as “have,” “may have,” “include,” or “may include” indicate the presence of such features (e.g., numerical values, functions, actions, or components such as parts) and do not exclude the presence of additional features.

[0029] In the present disclosure, expressions such as “A or B,” “at least one of A or / and B,” or “one or more of A or / and B” may include all possible combinations of items listed together. For example, “A or B,” “at least one of A and B,” or “at least one of A or B” may refer to cases including (1) at least one A, (2) at least one B, or (3) both at least one A and at least one B.

[0030] Expressions such as "first," "second," "first," or "second" used in this disclosure may modify various components regardless of order and / or importance, and are used only to distinguish one component from another and do not limit said components.

[0031] Where it is stated that a component (e.g., Component 1) is "(operatively or communicatively) coupled with / to" or "connected to" another component (e.g., Component 2), it should be understood that the component may be directly connected to the other component or connected through the other component (e.g., Component 3).

[0032] On the other hand, when it is stated that a certain component (e.g., a first component) is "directly connected" or "directly coupled" to another component (e.g., a second component), it may be understood that no other component (e.g., a third component) exists between the certain component and the other component.

[0033] The expression “configured to” as used in this disclosure may be replaced, depending on the context, with, for example, “suitable for,” “having the capacity to,” “designed to,” “adapted to,” “made to,” or “capable of.” The term “configured to” may not necessarily mean only “specifically designed to” in hardware.

[0034] In the embodiment, the 'module' or 'part' performs at least one function or operation and may be implemented in hardware or software, or a combination of hardware and software.

[0035] Meanwhile, various elements and areas in the drawings are depicted schematically. Accordingly, the technical concept of the present invention is not limited by the relative sizes or spacing depicted in the attached drawings.

[0036] Hereinafter, embodiments according to the present disclosure are described in detail with reference to the attached drawings so that those skilled in the art can easily implement them.

[0037] FIG. 1 is a block diagram conceptually illustrating the components of a coffee extraction device according to an embodiment of the present disclosure. FIG. 2 is a block diagram conceptually illustrating the components of a coffee extraction device according to an embodiment of the present disclosure. FIG. 3 is a drawing exemplarily illustrating a coffee extraction device according to an embodiment of the present disclosure. FIG. 4 is a drawing exemplarily illustrating a water supply unit and a water heating unit according to an embodiment of the present disclosure. FIG. 5 is a drawing exemplarily illustrating a water heating unit according to an embodiment of the present disclosure. FIG. 6 is a drawing exemplarily illustrating a coffee extraction module according to an embodiment of the present disclosure. FIG. 7 is a drawing exemplarily illustrating a siphon module and a coffee powder receiving unit according to an embodiment of the present disclosure. FIG. 8 is a drawing exemplarily illustrating a coffee receiving unit and a coffee dispensing unit according to an embodiment of the present disclosure. FIG. 9 is a drawing exemplarily illustrating a coffee receiving unit and a coffee dispensing unit according to an embodiment of the present disclosure.

[0038] Referring to FIGS. 1 to 9, a coffee extraction device (10) according to one embodiment of the present disclosure may include a water supply unit (100), a water heating unit (200), and a coffee extraction module (300).

[0039] The water supply unit (100) is a configuration having the function of storing or supplying water.

[0040] For example, the water supply unit (100) may be composed of a water storage tank, a water supply hose, or an external water supply connection, but is not limited thereto.

[0041] For example, the water supply unit (100) may be made of glass, polypropylene, polyethylene, or stainless steel, but is not limited thereto.

[0042] The water heating unit (200) is configured to heat water and supply water at a temperature required for coffee extraction.

[0043] Specifically, the water heating unit (200) may include an outer heating unit housing (210), a heating unit inlet pipe (220), a heater (230), and a heating unit outlet pipe (240).

[0044] The outer heating housing (210) is a member that forms the outer shape of the water heating unit (200) and protects the internal components.

[0045] For example, the material of the outer heating housing (210) may include glass, heat-resistant plastic, aluminum alloy, or stainless steel, but is not limited thereto.

[0046] The heating section inlet pipe (220) is a pipe that guides water introduced from the water supply section (100) to be delivered to the heater (230). Here, water can flow inside the heating section inlet pipe (220).

[0047] For example, the heating inlet pipe (220) may be made of a material such as glass, silicone rubber, Teflon, or stainless steel that can withstand high temperatures, but is not limited thereto.

[0048] The heater (230) is a device for heating water and may be an electric heater, an induction heater, or a gas heater, but is not limited thereto. As an example, the heater (230) may be a tungsten heater, but is not limited thereto.

[0049] For example, referring to FIG. 5, the heater (230) can be controlled by an external control device.

[0050] The heating unit discharge pipe (240) is a pipe that discharges water heated by the heater (230) to the coffee extraction module (300). Here, heated water can flow inside the heating unit discharge pipe (240).

[0051] For example, the heating unit discharge pipe (240) may be made of glass, silicone rubber, Teflon, or stainless steel that can withstand high temperatures, but is not limited thereto.

[0052] The coffee extraction module (300) is configured to extract coffee using heated water and discharge it based on the siphon principle. Here, the coffee extraction module (300) may include a coffee powder receiving section (310), a coffee receiving section (320), and a coffee discharge section (330), and may additionally include a siphon module (340) in some cases.

[0053] Referring to FIGS. 1 to 9, a water heating unit (200) according to one embodiment of the present disclosure may include an inner heating unit housing (250) and a heating space (260).

[0054] The inner heating housing (250) is provided inside the outer heating housing (210) and is configured to cover the heater (230).

[0055] For example, the inner heating housing (250) may be formed of a material such as glass, stainless steel, aluminum, or polycarbonate, but is not limited thereto.

[0056] The heating space (260) is defined as the space between the outer heating housing (210) and the inner heating housing (250), and is a space where water introduced from the heating inlet pipe (220) is heated.

[0057] The water heated in the heating space (260) can flow upward and can be discharged along the heating unit discharge pipe (240) as described below.

[0058] According to the present disclosure, since the heater (230) is placed inside the inner heating housing (250) without directly contacting water and transfers heat through the inner heating housing (250), the durability of the heater (230) can be enhanced, and problems such as device failure caused by the phenomenon of water boiling on the surface of the heater (230) can be prevented.

[0059] Referring to FIGS. 1 to 9, a water supply unit (100) according to one embodiment of the present disclosure may include a supply unit housing (110) and a supply unit discharge pipe (120).

[0060] The supply housing (110) is configured to accommodate water, and the water accommodated inside has a first water level.

[0061] For example, the supply housing (110) may be formed of materials such as stainless steel, polypropylene, and polyvinyl chloride (PVC), but is not limited thereto.

[0062] The supply unit discharge pipe (120) is configured to allow water to be discharged downward from the supply unit housing (110) and is connected to the heating unit inlet pipe (220).

[0063] The supply discharge pipe (120) can be manufactured in the shape of a tube with a smooth interior for smooth water discharge, and can be made of a heat-resistant material as needed.

[0064] Referring to FIGS. 1 to 9, an inner heating housing (250) according to one embodiment of the present disclosure has a longitudinal direction in a direction intersecting the ground, and the upper end connected to the heating space (260) may be formed at a second height lower than the first height.

[0065] According to the present disclosure, since the first height is higher than the second height, the inner heating housing (250) can always be submerged in water inside the water heating unit (200). That is, because the water inside the water heating unit (200) has a water level of the first height due to atmospheric pressure, the inner heating housing (250) is submerged. Here, when the water is heated by the heater (230), all the heat can be transferred to the water inside the heating space (260), and the problem of the outer housing being overheated and damaged can be prevented.

[0066] Furthermore, when water in contact with the inner heating unit housing (250) is heated and vaporized, the vaporized steam can push the water located in the heating space (260) upward, and accordingly, the water can flow upward along the heating unit discharge pipe (240) instantaneously. Here, as the fluid is instantaneously filled in the heating unit discharge pipe (240), the water can be introduced into the coffee powder receiving unit (310) by the siphon principle.

[0067] In summary, according to the present disclosure, heated water pushed out by heated steam flows instantaneously along the heating discharge pipe (240), so that the heated water can be discharged discontinuously along the heating discharge pipe (240), so that the heated water can be discharged solely by the heating function of the heater (230) without controlling the flow of water separately.

[0068] Referring to FIGS. 1 to 9, a heating discharge pipe (240) according to one embodiment of the present disclosure may include a first heating pipe member (241) and a second heating pipe member (242).

[0069] The first heating pipe member (241) is connected to the heating space (260) and is configured to allow water in the heating space (260) to flow upward.

[0070] The second heating tube member (242) is connected to the first heating tube member (241), and the first heating tube member (241) is bent and formed integrally, and is arranged in a direction intersecting the first heating tube member (241), and is configured to discharge heated water to the coffee extraction module (300).

[0071] For example, the first heating tube member (241) and the second heating tube member (242) may be formed of materials such as glass, PVC, stainless steel, copper alloy, or high-heat resistant plastic to provide heat resistance and corrosion resistance, but are not limited thereto.

[0072] According to the present disclosure, heated water flowing upward in the heating space (260) flows along the inside of the first heating pipe member (241) and then flows along the inside of the second heating pipe member (242) arranged in an intersecting direction to be discharged into the coffee powder receiving portion (310), thereby maximizing the siphon principle so that the heated water can be discharged.

[0073] Referring to FIGS. 1 to 9, a coffee extraction module (300) according to one embodiment of the present disclosure may include a coffee powder receiving portion (310) and a coffee receiving portion (320).

[0074] The coffee powder receiving section (310) is configured to receive coffee powder, and to extract coffee by mixing the coffee powder with water heated by the water heating section (200).

[0075] For example, the coffee powder receiving portion (310) may be formed of stainless steel, heat-resistant glass, or polycarbonate material, but is not limited thereto.

[0076] Referring to FIGS. 1 to 9, a coffee powder receiving portion (310) according to one embodiment of the present disclosure may include a powder receiving space (311), a powder receiving housing (312), and a filtering member (313).

[0077] The powder receiving space (311) is configured to receive coffee powder and allow heated water to flow from the top downward.

[0078] For example, the powder receiving space (311) may be formed of heat-resistant glass, high-temperature durable plastic, or metal material, but is not limited thereto.

[0079] The powder receiving housing (312) is a configuration that forms the outer shape of the powder receiving space (311).

[0080] For example, the powder receiving housing (312) may be made of aluminum alloy, stainless steel, or reinforced plastic, but is not limited thereto.

[0081] A filtering member (313) is provided at the bottom of the powder receiving housing (312) and is configured to filter the coffee powder.

[0082] For example, the filtering member (313) may be composed of a stainless steel mesh filter, a ceramic filter, or a nylon filter, but is not limited thereto.

[0083] For example, the filtering member (313) may have a groove formed therein to which a separate coffee filter (which may be made of paper material) can be attached, but a stainless steel mesh may also be formed for filtering without attaching a separate coffee filter.

[0084] The coffee receiving section (320) is configured to receive coffee discharged downward from the coffee powder receiving section (310).

[0085] Specifically, a coffee receiving portion (320) according to one embodiment of the present disclosure may include a coffee receiving space (321) and a receiving portion housing (322).

[0086] The coffee receiving space (321) is a space where coffee discharged downward from the coffee powder receiving section (310) is stored.

[0087] The receiving housing (322) is a housing that forms the outer shape of the coffee receiving space (321) so that the coffee received inside the coffee receiving space (321) can be received up to a third height.

[0088] Additionally, the coffee receiving portion (320) according to one embodiment of the present disclosure may include a discharge valve (323).

[0089] The discharge valve (323) is provided at the bottom of the receiving housing (322) and is configured to allow coffee stored in the coffee receiving space (321) to be discharged downward or to block discharge.

[0090] For example, the discharge valve (323) may be made of stainless steel, heat-resistant plastic, or aluminum alloy, but is not limited thereto.

[0091] According to the present disclosure, by selectively discharging the extracted coffee through the discharge valve (323), it is possible to support the user in manually discharging the remaining coffee after extraction.

[0092] Additionally, the coffee receiving portion (320) according to one embodiment of the present disclosure may include a receiving portion discharge pipe (324).

[0093] The receiving portion discharge pipe (324) is formed to protrude outward from the lower part of the receiving portion housing (322) and is configured to communicate the coffee discharged from the coffee receiving space (321) with the coffee discharge portion (330).

[0094] For example, the receiving discharge pipe (324) may be made of materials such as stainless steel, polypropylene (PP), and polyvinyl chloride (PVC), but is not limited thereto.

[0095] Referring to FIGS. 1 to 9, a coffee extraction device (10) according to one embodiment of the present disclosure may include a coffee discharge unit (330).

[0096] The coffee discharge section (330) is configured to allow coffee flowing in from the coffee receiving section (320) to be discharged to the outside along the coffee discharge pipe (331) based on the siphon principle. In other words, the coffee discharge section (330) may include a coffee discharge pipe (331).

[0097] Here, the coffee discharge pipe (331) is formed in an elongated shape and is configured to allow coffee to flow inside.

[0098] For example, the coffee discharge tube (331) may be formed of stainless steel, heat-resistant plastic, or ceramic material, but is not limited thereto.

[0099] Referring to FIGS. 1 to 9, a coffee receiving portion (320) according to one embodiment of the present disclosure may be provided so that coffee received inside can be received up to a third height. And, a coffee dispensing portion (330) may be formed such that the highest height of the coffee moving along the coffee dispensing pipe (331) is lower than the third height.

[0100] According to the present disclosure, the third height is higher than the fourth height, and coffee can be received inside the coffee receiving section (320). During the process of receiving the extracted coffee, at the moment the level of the coffee exceeds the fourth height (i.e., the highest height among the inner paths of the coffee discharge pipe (331)), the coffee inside the coffee receiving section (320) can be discharged all at once along the coffee discharge pipe (331). That is, according to the present disclosure, based on the siphon principle, coffee can be automatically discharged when the coffee is extracted to a certain level or higher (i.e., when the coffee is extracted to a level exceeding the fourth height) even without separate valve operation.

[0101] Meanwhile, referring to FIG. 7, a coffee extraction device (10) according to one embodiment of the present disclosure may include a siphon module (340).

[0102] A siphon module (340) according to one embodiment of the present disclosure is configured to be spaced upward from a coffee powder receiving portion (310) by a predetermined distance and to supply heated water to the coffee powder receiving portion (310) based on the siphon principle.

[0103] Specifically, a siphon module (340) according to one embodiment of the present disclosure may include a siphon receiving space (341), an outer siphon housing (342), an inner siphon housing (343), and a siphon discharge pipe (344).

[0104] The siphon receiving space (341) is a space where heated water is introduced and stored.

[0105] The outer siphon housing (342) forms the outer shape of the siphon receiving space (341) and is a housing positioned spaced apart from the inner siphon housing (343).

[0106] The inner siphon housing (343) is positioned on the inner side of the outer siphon housing (342), has its top closed, is formed at the bottom at a predetermined distance from the lower surface of the outer siphon housing (342) in at least one area, and is a housing that is spaced at a predetermined distance from the outer siphon housing (342) on the side.

[0107] The siphon discharge pipe (344) is connected to the outer siphon housing (342) at the bottom, is formed open at the top at a predetermined distance from the top of the inner siphon housing (343), and is formed at the side at a predetermined distance from the inner siphon housing (343), and is a pipe through which heated water is discharged downward.

[0108] For example, heated water can be introduced and stored in the siphon receiving space (341). Here, the water level of the heated water can rise and rise into the space between the inner siphon housing (343) and the siphon discharge pipe. Then, as a result of the rising water level, the moment the water level of the heated water exceeds the height of the top of the siphon discharge pipe (344), the heated water inside the siphon receiving space (341) can flow downward along the inside of the siphon discharge pipe (344) all at once (this flow is formed by the siphon principle).

[0109] In summary, according to the present disclosure, since the siphon principle can be applied in each of the processes in which water heated from the water heating unit (200) is discharged to the coffee powder receiving unit (310), in which water is discharged discontinuously and all at once from the siphon module (340), and in which coffee is discharged from the coffee receiving unit (320) along the coffee discharge unit (330), coffee extraction can be made possible without separate valve control.

[0110] Although preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above. It is understood that various modifications can be made by those skilled in the art without departing from the essence of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present disclosure. Explanation of the symbols

[0111] 10: Coffee brewing device 100: Water supply unit 200: Water heating unit 300: Coffee Extraction Module 310: Coffee powder receiving section 320: Coffee Reception Unit 330: Coffee Dispenser

Claims

Claim 1 A coffee extraction device comprising a water heating unit that supplies heated water based on the siphon principle, the device comprises: a water supply unit for supplying water; a water heating unit for heating water supplied from the water supply unit; and a coffee extraction module for extracting coffee using water heated by the water heating unit and coffee powder, wherein coffee powder is provided to be introduced therein, and the water heating unit comprises: an outer heating unit housing forming an outer shape; a heating unit inlet pipe provided at the bottom of the outer heating unit housing and into which water flows; a heater for heating water flowing in from the heating unit inlet pipe; and a heating unit outlet pipe provided at the top of the outer heating unit housing and into which water heated by the heater is discharged upward; and the water heating unit comprises an inner heating unit housing provided inside the outer heating unit housing and covering the heater. and a heating space defined as the space between the outer heating unit housing and the inner heating unit housing, wherein water introduced from the heating unit inlet pipe is heated; the water supply unit comprises: a supply unit housing in which water is received and the water received inside has a first height level; and a supply unit discharge pipe in which water is discharged downward from the supply unit housing and communicates with the heating unit inlet pipe; wherein the inner heating unit housing has a longitudinal direction in a direction intersecting the ground and the upper end connected to the heating space is formed at a second height lower than the first height; and the heating unit discharge pipe comprises: a first heating pipe member in which the water in the heating space communicates with the heating space and flows upward; and a second heating pipe member in which the first heating pipe member communicates with the first heating pipe member, is formed integrally with the first heating pipe member by bending the first heating pipe member, is arranged in a direction intersecting the first heating pipe member, and discharges the heated water to the coffee extraction module.A coffee extraction device comprising, wherein the first heating tube member causes water vapor generated by the vaporization of water in contact with the inner heating housing in the heating space to push the water in the heating space upward, thereby causing the water heated by the heater to flow discontinuously. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A coffee extraction device according to claim 1, wherein the coffee extraction module comprises: a coffee powder receiving portion in which coffee powder is received and water heated by the water heating portion is mixed to extract coffee; and a coffee receiving portion in which coffee discharged downward from the coffee powder receiving portion is received. Claim 7 A coffee extraction device according to claim 6, wherein the coffee extraction module comprises a tubular coffee discharge pipe formed in an elongated shape and arranged to allow coffee to flow inside, and a coffee discharge section that allows coffee introduced from the coffee receiving section to be discharged to the outside along the coffee discharge pipe based on the siphon principle. Claim 8 A coffee extraction device according to claim 7, wherein the coffee receiving portion is provided so that the coffee received inside can be received up to a third height, and the coffee dispensing portion is formed such that the highest height of the coffee travel path along the coffee dispensing pipe is a fourth height lower than the third height.

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