JP2005143847A - Coffee maker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coffee maker having a server hard to be broken and hardly boiling down and deteriorating the coffee. <P>SOLUTION: This coffee maker heats water in a water storage part 5 by a heater 11 provided inside a mount part 3 of a body 1 using a heating pipe in a water guiding passage A, makes it a boiling water, pours it to an extraction part 15 in the upper part of the body 1, extracts the coffee in the extraction part 15, and receives the extracted coffee with a stainless steel server 19; and the bottom 20a of a vessel body 20 of the server 19 is formed with a support projection 23 provided in an approximate point contact with a heating plate 10 which is heated by the heater 11. This constitution restricts the heat capacity flowing in the server 19 from the heater 11 via the heating plate 10 and the simple and low cost constitution can reduce a possibility of boiling down and deteriorating the coffee in the server 19. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric coffee maker, and more particularly to a server structure for receiving extracted coffee.

Conventionally, as a coffee maker of this type, a water tank (corresponding to the water storage part of the present invention) is detachably provided on the base of the main body, and the water in the water tank corresponds to a heating pipe (corresponding to the heating pipe of the present invention). The hot water is heated by the heater when passing through the hot water, and this hot water passes through the water rising pipe (corresponding to the rising pipe of the present invention) and the discharge pipe (corresponding to the discharging port of the present invention), and the coffee basket (the present invention). The coffee is extracted from within the coffee basket, and the extracted coffee is placed under the coffee basket and on the base (of the present invention). There is known a drip coffee maker that is received by a coffee receiver (corresponding to a server of the present invention) placed on a paper receiving part (corresponding to a placing part) (for example, Patent Document 1). And the coffee receptacles used in these coffee makers are generally made of heat-resistant glass. On the other hand, one using a stainless steel storage container (corresponding to the server of the present invention) is also known (for example, Patent Document 2). The storage container has a single structure or a vacuum double structure.
Japanese Patent No. 2810564 Japanese Patent No. 2855258

  However, in the former coffee maker, since the server is made of heat-resistant glass, although the strength of the heat-resistant glass itself is relatively high, there is a possibility that it may be accidentally broken. In the latter coffee maker, although the server is made of stainless steel, it is difficult to break, but for single-layered products, the stainless steel container is harder to cool the contents than the glass container, so the server is placed on the mounting table. If the temperature is kept warm, the coffee in the server may be heated more than necessary to be boiled or deteriorated.

  An object of the present invention is to solve the above problems and to provide a coffee maker having a server that is not easily broken and that does not easily boil or alter coffee during heat insulation.

  A coffee maker according to claim 1 of the present invention includes a main body, a mounting portion provided in a lower portion of the main body, a heater provided in the mounting portion, a water storage portion provided in the main body, In a coffee maker having a server that is mounted on a part and heated by the heat from the heater, an extraction part provided above the server, and a water conduit that sends water from the water storage part to the extraction part, The server is made of stainless steel, and a support protrusion is formed on the bottom surface of the server for limiting heat conducted from the heating surface of the mounting portion heated by the heater to the server.

  Moreover, the coffee maker according to claim 2 of the present invention is the coffee maker according to claim 1, wherein the support protrusion has a substantially point contact with the heating surface.

  Moreover, the coffee maker according to claim 3 of the present invention is the coffee maker according to claim 1, wherein the support protrusion has a shape that makes a substantially line contact with the heating surface.

  Furthermore, the coffee maker according to claim 3 of the present invention is the coffee maker according to claims 1 to 3, wherein the support protrusion is formed integrally with the bottom of the server by a press or the like.

  The coffee maker according to claim 1 of the present invention is configured as described above to boil the water in the water storage section in the water storage section or the water conduit, and extract the coffee extracted by the boiled hot water. The above-described storage unit stores the coffee in the server and retains the coffee in the server by the heat generated by the heater, but the heat conducted from the heating surface to the server is limited by the support protrusion. Thus, even if the server is made of stainless steel that emits less heat and is difficult to cool, the temperature of the coffee in the server does not rise excessively, and clogging and alteration can be prevented.

  Moreover, the coffee maker according to claim 2 of the present invention is configured as described above, so that the heat generated by the heater is conducted to the server by conduction from a support protrusion that is substantially in point contact with the heating surface. By being transmitted, heat transfer from the heater to the server is sufficiently limited, so that the coffee in the server can be more reliably prevented from being boiled or altered.

  Moreover, the coffee maker according to claim 3 of the present invention is configured as described above, so that the heat generated by the heater is conducted to the server by conduction from a support protrusion that is in substantially line contact with the heating surface. By being transmitted, heat transfer from the heater to the server is sufficiently limited, so that the coffee in the server can be more reliably prevented from being boiled or altered.

  Furthermore, the coffee maker according to claim 4 of the present invention can be easily formed on the bottom surface of the server by configuring as described above.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4. 1 is the main body of the coffee maker. The main body 1 includes a standing portion 2, a placing portion 3 formed integrally with the lower portion of the standing portion 2, and a flange portion 4 formed integrally with the upper portion of the standing portion 2. It is configured. And from the center to the upper part of the said standing part 2, the water storage part 5 opened upwards is provided, and the cover body 6 is attached so that the opening above this water storage part 5 may be covered. A water discharge pipe 7 is integrally formed at the bottom of the water storage section 5, and the base end of the water conduit 8 is connected to the tip of the water discharge pipe 7. Is connected to a proximal end of a heating tube 12 to be described later. In addition, 9 is a check valve.

  The placement unit 3 is open at the top, and a substantially flat heating plate 10 is provided so as to close the opening. A heater 11 is provided in thermal contact with the lower surface of the heating plate 10, and a heating tube 12 is provided below the heater. The heating plate 10 is heated from below by the heater 11, and the heater 11 and the heating tube 12 are substantially parallel and integrally formed. Further, as described above, the distal end of the water conduit 8 is connected to the proximal end of the heating tube 12. Further, a rising pipe 13 is connected to the tip of the heating pipe 12, and this rising pipe 13 extends upward in the standing portion 2, and in the flange portion 4, at the end portion. A discharge port 14 is open. The water guide path A is formed by the water discharge pipe 7, the water guide pipe 8, the heating pipe 12, the rising pipe 13 and the discharge port 14.

  An extraction section 15 is provided on the side of the standing section 2 and below the flange section 4. The extraction unit 15 is configured to be rotatable about a substantially vertical axis by a hinge mechanism (not shown). The extraction portion 15 is provided with a funnel portion 16 formed in a substantially funnel shape, and a through hole 17 is formed near the bottom of the funnel portion 16. Further, a valve body 18 is provided below the funnel portion 16 so as to close the through hole 17.

  A server 19 is placed on the heating plate 10. The server 19 includes a stainless steel container body 20 having an upper opening, a synthetic resin gripping part 21 attached to a side surface of the container body 20, and a synthetic resin lid that covers the opening of the container body 20. It is composed of a body 22. In the vicinity of the outer periphery of the bottom surface 20a of the container body 20, there is provided a support protrusion 23 that is formed integrally with the container body 20 by pressing. The support protrusions 23 protrude downward in a substantially spherical shape, and are formed on the bottom surface 20a of the container main body 20 at three positions with an interval of approximately 120 degrees with respect to the center of the container main body 20. The protrusion of the support protrusion 23 is about 0.5 mm. Therefore, when the server 19 is placed on the heating plate 10, the bottom surface 20 a of the container body 20 has an interval of about 0.5 mm between the heating plate 10 and the server 19. A through hole 24 that communicates the inside and the outside of the server 19 is formed in the approximate center of the lid body 22. In addition, 25 is a power switch, 26 is a leg of the main body 1.

  Next, the operation of this embodiment will be described. First, the user removes the lid body 6, pours a necessary amount of water into the water reservoir 5, and returns the lid body 6 when water injection is completed. At this time, a part of the water in the water storage part 5 flows from the water discharge pipe 7 through the water guide pipe 8 into the heating pipe 12. Then, the extraction unit 15 is rotated in the horizontal direction to expose the funnel unit 16, a filter (not shown) is installed in the funnel unit 16, and a necessary amount of coffee bean powder is placed in the filter. Further, the server 19 is placed on the heating plate 10 of the placement unit 3 with the lid 22 attached. At this time, the support protrusion 23 formed on the bottom surface 20 a of the server 19 comes into contact with the heating plate 10. As described above, since the heating plate 10 is formed in a substantially flat shape and the support protrusion 23 is formed in a substantially spherical shape, the heating plate 10 and the support protrusion 23 are substantially the same. Point contact will occur. Further, when the lid body 22 abuts on the valve body 18, the valve body 18 is opened and the through hole 17 is opened.

  When the coffee is ready for extraction in this way, the user turns on the power switch 25 to energize the heater 11. At this time, the water in the heating pipe 12 is heated by the heater 11 provided integrally with the heating pipe 12 and boiled to rise up the riser pipe 13 and extract from the discharge port 14. Part 15 is poured. The hot water boiled in the heating pipe 12 not only flows toward the rising pipe 13 connected to the distal end side in the heating pipe 12, but also connected to the proximal end side of the heating pipe 12. Although it tries to flow backward toward the water guide pipe 8, the check valve 9 prevents the hot water from flowing backward. Then, the hot water poured into the extraction unit 15 extracts coffee from the coffee bean powder in the extraction unit 15, flows down from the through hole 17 through the through hole 24 of the lid body 22, and the server Stored in 19 container bodies 20. When the heater 11 detects that the water in the water storage section 5 has run out and the heating pipe 12 is in an empty state by a thermostat (not shown), the heater 11 is repeatedly turned on and off. Then, the coffee in the server 19 is kept warm by the heat from the heater 11 in a state where power interruption is repeated. The heat from the heater 11 is transferred from the heating plate 10 to the coffee through the container body 20. When drinking the extracted coffee, the user holds the grip portion 21 of the server 19 to take out the server 19 from the placement portion 3 and pours the coffee in the server 19 into an arbitrary cup or the like. .

  As described above, the container body 20 of the server 19 is made of stainless steel, and the coffee in the container body 20 is hard to cool, that is, the heat that the coffee has is hard to be released to the outside, the stainless steel itself Compared to heat-resistant glass, the heat conductivity is high and the specific heat is small. Therefore, the coffee in the server 19 efficiently uses the heat from the heater 11 during heat retention compared to the case of using a heat-resistant glass server. In addition to being received, heat is not easily released, so it tends to be boiled or altered. However, as described above, the support protrusion 23 is formed on the bottom surface 20a of the container body 20 of the server 19, and the support protrusion 23 is substantially point-contacted with the heating plate 10 (in practice, Due to the deformation of the heating plate 10 due to the weight of the server 19 and the coffee, etc., the surface contact is made in a very small area), so that the heat conducted from the heating plate 10 to the container body 20 is limited. That is, the server 19 is heated by a small amount of heat conducted from the heater 11 through the heating plate 10 to the support protrusion 23 and a relatively small amount of heat transferred from the heating plate 10 to the bottom surface 20a by radiation or convection. Therefore, it is possible to reduce the risk that the stored coffee is boiled or deteriorated by the heat from the heater 11, although it is made of stainless steel that is less likely to release heat and has better heat conduction than glass. can do. Accordingly, without taking measures such as providing a control circuit for detecting and controlling the temperature of the server 19, the coffee in the server 19 can be prevented from being simmered or altered.

  Next, a second embodiment of the present invention will be described based on FIG. In addition, about the structure which is common in 1st embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted. The server 19 includes a stainless steel container body 20 having an upper opening, a synthetic resin gripping part 21 attached to a side surface of the container body 20, and a synthetic resin lid that covers the opening of the container body 20. It is composed of a body 22. In the vicinity of the outer periphery of the bottom surface 20b of the container body 20, there is provided a support protrusion 27 that is formed integrally with the container body 20 by pressing. The support protrusion 27 protrudes downward so that the cross section has a substantially arc shape, and is formed in an annular shape over the entire circumference of the bottom surface 20 b of the container body 20. The protruding amount of the support protrusion 27 is about 0.5 mm. Therefore, when the server 19 is placed on the heating plate 10, the bottom surface 20 b of the container body 20 has an interval of about 0.5 mm between the heating plate 10 and the server 19.

  Next, the operation of this embodiment will be described. Note that description of operations common to the first embodiment described above is omitted. The user places the server 19 on the heating plate 10 of the placement unit 3 with the lid 22 attached. At this time, the support protrusion 27 formed on the bottom surface 20 b of the server 19 comes into contact with the heating plate 10. As described above, the heating plate 10 is formed in a substantially flat shape and the support protrusion 27 is formed in a substantially arc shape in cross section. A substantially line contact is made in an annular shape. When the user turns on the power switch 25, coffee is extracted from the coffee bean powder and stored in the container body 20 of the server 19. The coffee in the server 19 is kept warm by the heat from the heater 11. The heat from the heater 11 is transferred from the heating plate 10 to the coffee through the container body 20.

  As described above, the container body 20 of the server 19 is made of stainless steel, and the coffee in the container body 20 is hard to cool, that is, the heat that the coffee has is hard to be released to the outside, the stainless steel itself Compared to heat-resistant glass, the heat conductivity is high and the specific heat is small. Therefore, the coffee in the server 19 efficiently uses the heat from the heater 11 during heat retention compared to the case of using a heat-resistant glass server. In addition to being received, heat is not easily released, so it tends to be boiled or altered. However, as described above, the support protrusion 27 is formed on the bottom surface 20b of the container body 20 of the server 19, and the support protrusion 27 is in a substantially line contact with the heating plate 10 in an annular manner (actually Is in surface contact with a very small area due to deformation of the heating plate 10 due to the weight of the server 19 and coffee), the heat conducted from the heating plate 10 to the container body 20 is limited. That is, the server 19 is heated by a small amount of heat conducted from the heater 11 through the heating plate 10 to the support protrusion 27 and a relatively small amount of heat that moves from the heating plate 10 to the bottom surface 20b by radiation or convection. Therefore, it is possible to reduce the risk that the stored coffee is boiled or deteriorated by the heat from the heater 11, although it is made of stainless steel that is less likely to release heat and has better heat conduction than glass. can do. Accordingly, without taking measures such as providing a control circuit for detecting and controlling the temperature of the server 19, the coffee in the server 19 can be prevented from being simmered or altered.

  Next, a third embodiment of the present invention will be described with reference to FIGS. In addition, about the structure which is common in each embodiment mentioned above, a common code | symbol is attached | subjected and the description is abbreviate | omitted. The server 19 includes a stainless steel container body 20 having an upper opening, a synthetic resin gripping part 21 attached to a side surface of the container body 20, and a synthetic resin lid that covers the opening of the container body 20. It is composed of a body 22. In the vicinity of the outer periphery of the bottom surface 20c of the container body 20, there is provided a support protrusion 28 that is formed integrally with the container body 20 by pressing. Although the lower end surface 28a of the support projection 28 is flat and is in surface contact with the heating surface 10, the area of the lower end surface of the support projection 28 is sufficiently small with respect to the bottom surface 20c of the container body 20. As a result, the heat conducted from the heating surface 10 to the server 19 is limited. Further, the support protrusions 28 are formed on the bottom surface 20c of the container main body 20 at three locations at intervals of about 120 degrees with respect to the center of the container main body 20. The protruding amount of the support protrusion 28 is about 0.5 mm. Accordingly, when the server 19 is placed on the heating plate 10, the bottom surface 20 c of the container body 20 has an interval of about 0.5 mm between the heating plate 10 and the server 19.

  Next, the operation of this embodiment will be described. Note that description of operations common to the above-described embodiments is omitted. The user places the server 19 on the heating plate 10 of the placement unit 3 with the lid 22 attached. At this time, the lower end surface 28a of the support protrusion 28 formed on the bottom surface 20c of the server 19 is in contact with the heating plate 10. As described above, the heating plate 10 is formed in a substantially flat shape, and the lower end surface 28a of the support protrusion 28 is formed sufficiently small with respect to the bottom surface 20c. And the support protrusion 28 come into contact with each other with a small area. When the user turns on the power switch 25, coffee is extracted from the coffee bean powder and stored in the container body 20 of the server 19. The coffee in the server 19 is kept warm by the heat from the heater 11. The heat from the heater 11 is transferred from the heating plate 10 to the coffee through the container body 20.

  As described above, the container body 20 of the server 19 is made of stainless steel, and the coffee in the container body 20 is hard to cool, that is, the heat that the coffee has is hard to be released to the outside, the stainless steel itself Compared to heat-resistant glass, the heat conductivity is high and the specific heat is small. Therefore, the coffee in the server 19 efficiently uses the heat from the heater 11 during heat retention compared to the case of using a heat-resistant glass server. In addition to being received, heat is not easily released, so it tends to be boiled or altered. However, as described above, the support protrusion 28 is formed on the bottom surface 20c of the container body 20 of the server 19, and the support protrusion 28 comes into contact with the heating plate 10 in a small area. The heat conducted from the heating plate 10 to the container body 20 is limited. That is, the server 19 is heated by a small amount of heat conducted from the heater 11 through the heating plate 10 to the support protrusion 28 and a relatively small amount of heat transferred from the heating plate 10 to the bottom surface 20b by radiation or convection. Therefore, it is possible to reduce the risk that the stored coffee is boiled or deteriorated by the heat from the heater 11, although it is made of stainless steel that is less likely to release heat and has better heat conduction than glass. can do. Accordingly, without taking measures such as providing a control circuit for detecting and controlling the temperature of the server 19, the coffee in the server 19 can be prevented from being simmered or altered.

  As described above, according to the present invention, the heater 11 provided in the mounting portion 3 of the main body 1 heats the water in the water storage portion 5 with the heating pipe 12 in the water guide path A to make hot water, A coffee maker is then poured from the discharge port 14 to the extraction unit 15 at the top of the main body 1 to extract coffee in the extraction unit 15 and receive the extracted coffee by a stainless steel server 19. A support protrusion 23 provided so as to be substantially in point contact with the heating plate 10 heated by the heater 11 or a support provided so as to be substantially in line contact with the bottom surface 20a, 20b, 20c of the container body 20. By forming the protrusion 27 or the support protrusion 28 provided so as to come into contact with a small area, the amount of heat flowing from the heater 11 to the server 19 via the heating plate 10 is limited, and the structure is simple and inexpensive. The coffee in the server 19 has been boiled or altered It is capable of reducing the risk of.

  In addition, the present invention forms the support protrusions 23, 27, and 28 on the bottom surfaces 20a, 20b, and 20c of the container body 20 of the server 19 by press working. It can be easily formed on the bottom surface of 19.

  In addition, this invention is not limited to the above embodiment, A various deformation | transformation is possible within the range of the summary of invention. For example, in the first embodiment, the support protrusion is formed in a substantially spherical shape, but the point is that the support protrusion may be in a shape that makes a substantially point contact with the heating surface. You may form in. Similarly, in the second embodiment, the cross-sectional shape of the support protrusion is formed in a substantially arc shape, but the point is that the support protrusion may be in a shape that is substantially in line contact with the heating surface. You may form so that a cross-sectional shape may become a substantially V shape. In the first embodiment, three support protrusions are provided at equiangular intervals. However, a larger number of support protrusions may be provided, and the positions where the support protrusions are provided are also placed on the heating surface. Any position where the server is stable is acceptable. Further, in the second embodiment, the support protrusion is formed in an annular shape, but the number, shape, and position are not limited as long as the server placed on the heating surface is in a stable position and shape. (For example, intermittently forming a plurality of arc-shaped support protrusions)

It is a front view of the coffee maker which shows 1st embodiment of this invention. It is sectional drawing same as the above. It is a bottom view of a server same as the above. FIG. 4 is an enlarged cross-sectional view of the vicinity of the support protrusion. It is a bottom view of the server of the coffee maker which shows 2nd embodiment of this invention. It is a bottom view of the server of the coffee maker which shows 3rd embodiment of this invention. FIG. 4 is an enlarged cross-sectional view of the vicinity of the support protrusion.

Explanation of symbols

1 Body 3 Placement 5 Reservoir
10 Heating plate
11 Heater
15 Extractor
19 servers
20a, 20b, 20c Bottom
23, 27, 28 Supporting protrusion A Water conveyance path

Claims (4)

  A main body, a mounting portion provided in a lower portion of the main body, a heater provided in the mounting portion, a water storage portion provided in the main body, and a heat receiving portion mounted on the mounting portion and the heat from the heater. In a coffee maker having a server to be heated, an extraction unit provided above the server, and a water conduit for sending water from the water storage unit to the extraction unit, the server is formed of stainless steel and heated by the heater A coffee maker characterized in that a support protrusion for limiting heat conducted from the heating surface of the mounting portion to the server is formed on the bottom surface of the server.   The coffee maker according to claim 1, wherein the support protrusion has a shape that makes substantially point contact with the heating surface.   The coffee maker according to claim 1, wherein the support protrusion has a shape that makes a substantially line contact with the heating surface. The coffee maker according to any one of claims 1 to 3, wherein the support protrusion is formed integrally with a bottom surface of the server by a press or the like.

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