JPH0642586Y2 - Coffee extractor - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for extracting coffee or the like, which is obtained by injecting hot water under pressure into an object to be extracted such as coffee powder.

[0002]

2. Description of the Prior Art Structure and Problems Thereof It is generally said that it is preferable to extract coffee at a high temperature for a short time and evenly from the whole. For this reason, there has been conventionally found a coffee extraction device that pressurizes with a pump or the like to extract coffee liquid in a short time. Hereinafter, the conventional extraction device for coffee or the like as described above will be described with reference to the drawings.

FIG. 1 shows a conventional device for extracting coffee or the like. In FIG. 1, reference numeral 1 is a heater block, and this heater block 1 comprises a block body 2, an upper cover 3 and a lower cover 4. And is made of a good heat conductor such as aluminum. A spiral water channel 5 is formed on the front surface of the block body 2, and a spiral heating element 6 is embedded on the rear surface. Further, a through hole 7 is provided at the center thereof so as to communicate with the groove 5 for the water channel. Reference numeral 8 denotes a seal ring mounted on the outer peripheral portion of the block main body 2, and by providing the upper cover 3 in a watertight manner via the seal ring 8, the upper surface of the groove 5 is closed to form a water channel 5a. The lower cover 4 is provided with a recess 10 having an opening 10a which is watertightly communicated with the through hole 7 and an O-ring 9. The recess 10 closes the opening 10a, and the valve 11 is biased. The valve spring 12 is provided by screwing a valve seat 13. Reference numeral 14 denotes a diffusion plate screwed to the valve seat 13 with a mounting screw 14a.

Reference numeral 15 denotes a pump mounted by screwing on the intermediate plate 16, and a suction pipe 18 having one end opened at the bottom of the water container 17 via the pump 15 and the groove 5 of the block body 2 It is connected to the connection pipe 19 that communicates with the water channel 5a of the heater block 1 that is formed. 20 is a hook plate with a central opening provided in the lower part of the lower cover 4,
Around the central opening of the hook plate 20, a plurality of cutouts 24 for loosely fitting a plurality of claws 23 provided around the upper end of a filter holder 22 provided with a handle 21, and a claw 23.
A plurality of engaging pieces 25 that engage with the claws 23 by the rotation of the filter holder 22 after the loose fitting are respectively provided. Two
6 is a filter housed in the filter holder 22,
Reference numeral 27 is a seal packing that is locked to the lower cover 4 and is in airtight contact with the upper end of the filter 26. In addition,
An outlet 28 is provided at the lower end of the taper surface facing the center at the bottom of the filter holder 22. Reference numeral 29 is a backing plate having a large number of holes for mounting a demitasse coffee cup 30 into which this type of coffee is placed, and 31 is a saucer. Again 3
Reference numeral 2 denotes an automatic temperature controller which is heat-sensitively attached to the block body 2.

The operation of the extraction apparatus constructed as above will be described below. First, the water container 1
Put the required amount of water in 7. Next, when power supply to the heating element 6 is started, the automatic temperature controller 32 controls the temperature to a predetermined value. Then, a predetermined amount of coffee powder 33 is put into the filter 26 stored in the filter holder 22, and the hook plate 20
Pivotally engage. This completes the preparation for coffee extraction. Next, the demitasse coffee cup 30 is set on the receiving plate 29 which is just below the outflow port 28 of the filter holder 22, and the pump 15 is operated, whereby the water in the water container 17 is connected to the suction pipe 18 by the pump 15. It is pumped into the block body 2 via the pipe 19. This block body 2
The water pumped into the inside is boiled by the heat transfer from the heater block 1 into hot water while passing through the spiral water passage 5 a, passing through the through hole 7 and pressing the valve 11 to pass through the diffusion plate 14. While passing through the coffee grounds 33 to extract the coffee liquid, the coffee liquid flows out from the outlet 28 and is poured into the demitasse coffee cup 30 to complete the coffee.

However, this type of electromagnetic pump 15
During its operation, the entire pump 15 vibrates due to the sliding magnetic material that slides inside the pump 15, and this vibration increases as the discharge capacity of the pump 15 increases.
Therefore, in the above-described configuration, the pump 15 has the intermediate plate 1
Pump 15 which is attached to 6 via a cushioning rubber or the like
The vibration of the was spread over the entire body and generated noise, which was a problem.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional drawbacks, and an object of the present invention is to provide a brewing apparatus for coffee or the like which does not cause any troubles due to noise generation.

[0008]

In order to achieve the above-mentioned object, a brewing device for coffee or the like of the present invention comprises a water container having an opening at the bottom and standing upright on a base, and a small opening below the opening. The pump has a suction pipe opposed to each other with a gap, and has a pump attached to the base via a vibration-proof rubber, and a rubber communication bushing for communicating the opening with the suction pipe. The water contained in the container is discharged from the pump through the communication bushing, and is configured to be poured into an object to be extracted such as coffee powder through a boiling unit, and according to this configuration, extraction of coffee or the like is performed. Since the vibration of the pump that operates from time to time is the vibration of only the pump itself, the noise of the body generated by the vibration of the pump is further reduced.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. 2 to 4 show an apparatus for extracting coffee or the like according to an embodiment of the present invention. In FIG. 2, 41 is a heater block which is a boiling water unit, and this heater block 41 is a good heat conductor such as aluminum die casting. The formed heater block main body 42 is provided with a water pipe 44 in which a substantially cylindrical heater 43 in which a heating wire 43a is filled with an insulating powder 43b is installed in a heat conductive manner. This water pipe 44 is provided with a spiral groove 45 continuous from one end to the other end on the outer peripheral surface, and is provided with seal rings 46 at both ends thereof, and is hermetically inserted into the heater block main body 42 to form a spiral water channel 47. Is formed. Four
8 is a heater block body 4 located at the tip of the water channel 47
2 is an outlet provided at the bottom. Incidentally, 49 is a terminal plate of the heater 43, and 50 is a set screw for screwing the water pipe 44 to the heater block main body 42.

Reference numeral 51 is a ring plate having an opening 53 in the center thereof, which is in airtight communication with the outlet 48 and an O-ring 52, and is screwed to the lower surface of the heater block body 42 by a plurality of mounting screws 54. There is. 55 is the ring plate 51
Is a holder integrally formed by zinc die-casting or the like by extending a handle 56 for operation on the outside of the holder to form a substantially cylindrical shape. It is provided so as to be rotatable by being engaged with the portion 57.

The ring plate 5 is communicated with the opening 53.
1 is a guide ring detachably provided by a male screw portion 60 screwed to a female screw portion of a stepped hole portion 59 provided in No. 1, and a stainless steel is provided with a needle tip having an acute-angled tapered tip at the center upper portion thereof. A storage portion 58a in which a nozzle 61 formed of, for example, is press-fitted to surround the nozzle 61 and form a substantially truncated cone-shaped cavity.
And is formed of stainless steel or the like. Further, the nozzle 61 is provided with a nozzle hole 62 which is branched in two directions at the lower end portion and is opened in the tapered surface, and when the guide ring 58 is screwed by the O-ring 63, the ring plate 51 is screwed.
The opening 53 is communicated in an airtight manner. Reference numeral 64 is a valve formed of silicon rubber or the like and provided in the stepped portion of the stepped hole portion 59. This valve 64 is formed by a valve spring 66 provided in the central opening 65 of the male screw portion 60 of the guide ring 58. Is urged in the direction to close the.

Reference numeral 67 denotes a support metal fitting provided on the base 68 by screwing, for example. The support metal fitting 67 is formed in a substantially U-shape open to the rear with a steel plate or the like, and is provided on the front surface thereof. An elevating table 70 formed of a stainless steel plate or the like is provided so as to be able to elevate and lower through support rods 69 provided at both ends. The lift table 70 is provided with a notch hole 70a at the center, and a guide groove 71a having a substantially U-shaped cross section which is opened in the notched hole 70a at an inclined surface 71b. It has been extended. Further, the guide groove 71a is formed on the upper surface of the capsule base 71.
The pair of left and right hook plates 72 with a gap narrower than the U-shaped groove width of
Is formed by zinc die casting or the like. In addition, a discharge port 73 is provided at the center of the lower part of the center of the capsule base 71, and a disk-shaped capsule seat 74 made of stainless steel or the like is provided with the periphery thereof being concave.

The pair of hook plates 72 are integrally provided with hook pieces 75 projecting outwardly from each other. The hook pieces 75 slide upward together with the lifting table 70, and the lifting table 7
When the upper end of the sliding range of 0 is reached, the holder 5
5, passing through the notch 76 provided around the central opening,
By the rotation of the holder 55, the holder 55 is engaged with the engaging portion 77 adjacent to the cutout portion.

In FIG. 3, reference numeral 78 denotes a mounting member 7 shown in FIG. 2 on which the heater block 41 is mounted and which is formed of a steel plate or the like.
9 is a lever slidably provided in the front-rear direction, that is, in the longitudinal direction of the heater block main body 42. The lever 78 engages near the base of the handle 56 of the holder 55, and Sliding in conjunction with rotation.

Reference numeral 80 denotes a link which is formed of a steel plate or the like and has one end abutted against a recess 81 at the tip of the lever 78. At the same time, the other end is engaged with an engaging shaft 83 provided on the side wall of the elevating table 70 to convert the rotation of the holder 55 into vertical sliding of the elevating table 70. 84 is a lever 78
The contact piece 84 forms the recess 81 of the contact piece 84. The lift piece 70 of the contact piece 84 is slid to the upper end, and the hook piece 75 is engaged with the engaging portion 77 by the rotation of the holder 55 as described above. During this period, the capsule base 71 is kept in the upper end position by sliding against the terminal portion 85 of the link 80. The abutting piece 84 is provided with a first square hole 84a and a second square hole 84b, and the terminal portion 85 is provided with a projection 85a and a step projection 85b corresponding thereto. Reference numeral 78a is a protruding piece provided adjacent to the contact piece 84 and protruding from the lever 78.
Is an engaging piece provided on the upper portion of the link 80.

Reference numeral 86 denotes a water container which is positioned on the base 68 and is located behind the heater block 41 and the lifting platform 70 that moves up and down below the heater block 41, and the capsule platform 71, and which is open at the top. 86 is a capsule base 7
1 is provided with a pair of guide ribs 86b extending downward so as to surround the notch hole 71a of the elevating table 71 continuous with the guide groove 71a.

Numeral 87 is located below the water container 86 and is located on the base 6
8 is an electromagnetic pump mounted on the back surface of the water container 8 via a vibration proof rubber 87a. The suction port of the pump 87 is provided with a suction pipe 88, and the suction pipe 88 is opened at the bottom of the water container 86. The opening tube 89a and the communication bushing 90 made of rubber, the opening tube 89a and the communication bushing 90 made of rubber are provided so as to have a slight gap 1 vertically with the opening tube 89a extending downward. Through the communication. 91
Is a drain cock having one end communicating with the second opening 92 on the bottom surface of the water container 86. A drain port 94 is provided at the other end of the drain cock 91, and the drain port 94 is located in front of the pump 87. It faces the inside of a tray 93 provided below the base 68. The discharge port 94 is normally the drain cock 9
It is closed at 1. A float switch 95 is provided on the inner bottom of the water container 86, and detects the water level of the water stored in the water container 86. 89b is the first opening 89
It is a filter equipped in. 96 is a side plate, 97 is a back plate having rubber feet 97a, and this back plate 96 is the base 68.
It is integrated by being screwed on.

Reference numeral 98 is an operating knob of the drain cock 91,
99 is the lid of the water container 86, 100 is detachably attached to the opening of the base 68 located below the capsule base 71,
Further, it is a receiving plate having a large number of holes, on which the demitasse coffee cup 101 is placed. 102 is a heater block 41
Heat shield plate 103, cover 103, operation panel 105
It is an operation switch prepared for.

Reference numeral 106 denotes a capsule in which coffee powder 107 is hermetically sealed. The capsule main body 108 is formed by a thin film of aluminum or the like in a generally conical shape with an obtuse angle, and a convex spherical shape that expands to a substantially central portion when pressurized. A bottom portion 109 formed of a thin film of aluminum or the like having a weak line portion 109a that opens
The capsule body 108 has a gap with the bottom portion 109.
And a filter 110 having an opening suitable for filtering the coffee powder 107 enclosed in the above, the capsule main body 108 is extended to form an outer peripheral rim 111, and a crimp seam is formed. The end of the capsule body 108 is wound and sealed under the outer peripheral rim 111.

The operation of the coffee extraction device having the above-described structure will be described below. First, water of a predetermined quality is put into the water container 86, and the operation switch 104 is operated to start energizing the heater 43. When a predetermined time has elapsed, the heater block 41 starts to be controlled to a predetermined temperature by an automatic temperature controller (not shown).

Next, the handle 56 of the holder 55 is rotated in the front direction (the direction opposite to the water container 86) to rotate the capsule base 71.
Is lowered, and the capsule 106 is inserted along the guide groove 71a of the capsule base 71 that is wider than the outer diameter of the outer peripheral rim 111 of the capsule 106. At this time, the capsule 106 has left and right guides on opposite side surfaces of a pair of hook plates 72 provided with a narrow outer diameter of the outer peripheral rim 111 and a gap wider than the outer diameter of the substantially cone-shaped capsule body 108. At the same time, the back surfaces of the pair of hook plates 72 projecting inward from the guide grooves 71a wider than the outer diameter of the outer peripheral rim 111 and the bottom surfaces of the guide grooves 71a are vertically guided to be inserted substantially linearly. . Capsule 106 has guide ring 5
When it is inserted up to the capsule seat 74 located directly below 8,
The capsule 106 is positioned by engaging a concave capsule seat 74 with a convex spherical bottom portion 109, and the outer peripheral rim 111 abuts on the capsule seat 74 and is placed.

Then, the handle 56 is pushed and rotated rearward (toward the water container 86) to rotate the lever 78, the link 80, and the lift table 7.
Raise the capsule base 71 through 0. The capsule 106 placed on the capsule base 71 is guided by the accommodating portion 58a of the guide ring 58 having substantially the same shape as the capsule body 108, and the tip thereof is pierced by the needle-shaped nozzle 61, and the nozzle hole 62 is formed in the capsule 106. Open.

When the rotation of the handle 56 advances and the recess 81 of the lever 78 reaches the projection 84a of the terminal portion 84 of the link 80, the capsule base 71 reaches almost the upper end of the lifting range in which the capsule base 71 slides together with the lifting base 70. Even if the handle 56 is rotated, the lever 78 only abuts and slides on the terminal portion 84 by the abutment piece 84, and the link 80 does not rotate, so that the capsule base 71 does not rise. At this time, the hook piece 75 provided on the capsule base 71 enters from the notch portion 76 of the holder 55 as described above. Holder 55 via handle 56
When is further rotated, the capsule base 71 is further lifted by rotating while contacting the inclined surfaces provided on the back surface of the hook piece 75 and the inner surface of the engagement portion 77 of the holder 55, respectively. The capsule base 71 is lifted, and the capsule seat 7
4, the outer peripheral rim 111 of the capsule 106, which is in contact with the capsule 4, is pressed against the lower end of the guide ring 58 from above, and
Is kept airtight, the setting of the capsule 106 is completed. On the other hand, in the lever 78 and the link 80, the lever 78 slides further rearward in association with the rotation of the handle 56. At this time, the projection 85a provided on the terminal portion 85 of the link 80 passes through the first square hole 84a provided on the abutment piece 84 of the lever 78 to engage with the second square hole 84a, and at the same time, the terminal portion is formed. The stepped projections 85b of 85 and the first square holes 84a are engaged with each other, and a sound is emitted each time the end surface of the first square holes 84a passes over the respective stepped portions of the stepped projections 85b. 74 and guide ring 5
8 represents a holding state.

Next, when the demitasse coffee cup 101 is placed on the receiving plate 100 below the projecting port 73 of the capsule seat 74 and the operation switch 104 is operated to start the operation of the pump 87, the water in the water container 86 is Is a check valve (not shown) provided in the heater block main body 42 which is an inlet of the water pipe 44 from a discharge pipe (not shown) of the pump 87 through the pump 87.
To the water pipe 44 via a pipe (not shown) communicating with the water pipe 44. The water sent to the water pipe 44 circulates in the vicinity of the outer periphery of the heater 43 by the spiral water passage 47, is heated to be hot water, and exits from the outlet 48. Furthermore, this hot water is pump 8
The valve 64 is pressed by the discharge pressure from 7, and the coffee powder 107 in the capsule 106 is sprayed and sprayed from the nozzle hole 62 of the nozzle 61. Then, the hot water pumped into the capsule 106 passes through the coffee grounds 107 and is filtered by the filter 110, and the weak pressure portion 109a of the bottom portion 109 is opened by the discharge pressure to be poured from the discharge port 73 into the demitasse coffee cup 101. Coffee is ready.

The vibration of the pump 87 during the coffee extraction is first conducted to the base 68 equipped with the pump 87 through the anti-vibration rubber 87a, and is absorbed into the water container 86 by the rubber communication bushing 91. Since the pump 87, which is transmitted in a lowered state and is a source of vibration, is located below the water container 86, the vibration of the body can be reduced even by the water stored in the water container 86. Is.

As described above, according to this embodiment, the water container 8
A pump 87 having a suction pipe 88, which is opposed to the first opening 89 on the bottom surface of 6 with a gap liter and is communicated with a communication bushing 90, is attached to the back surface of a base 68 equipped with a water container 86 on a back surface of a vibration-proof rubber 87a. The vibration of the pump 87 generated when the pump 87 is operated is the vibration of the pump 87 alone as much as possible, and as a result, the noise of the body generated by the vibration of the pump 87 can be reduced. Is.

In this embodiment, the water container 86 is the base 6
8 is provided upright on the rear part of the pump 8 integrally, but is provided with a water container receiver having an opening facing the suction pipe 88 of the pump 87 and communicating with the communication bushing 90 with a slight gap, A water container may be detachably attached to this receiver. In addition, the connection configuration with the communication bushing 90 that communicates with the first opening 89 of the water container 86 is not limited to this embodiment, and for example, the opening of the water container is circumscribed and sandwiched by the flanges that contact the inner and outer surfaces of the opening. The design can be changed as appropriate by, for example, sealing.

[0028]

As described above, according to the present invention, a water container having an opening at the bottom and standing upright on the base is opposed to the water container located below the opening with a slight clearance. A pump having an intake pipe and attached to the base via a vibration-proof rubber, and a rubber communication bushing for communicating with the opening and the intake pipe, and containing water in the water container to store the water. Since it is configured to discharge from the pump via the communication bushing and to pour the material to be extracted such as coffee powder through the boiling unit, the vibration of the pump that operates when extracting coffee or the like is limited to that of the pump alone. This results in vibration, and as a result, the noise of the body generated by the vibration of the pump can be further reduced.

Further, according to the present invention, since the suction pipe of the pump is provided below the opening provided on the bottom surface of the water container so as to face the opening with a slight gap, The length of the communicating bushing can be used, and therefore, the communicating bushing itself does not oscillate and vibrate due to the vibration transmission from the pump. It will not cause a lot of noise.

[Brief description of drawings]

FIG. 1 is a left side sectional view of a conventional coffee brewing device.

FIG. 2 is a right side sectional view of the coffee brewing apparatus according to the embodiment of the present invention.

FIG. 3 is a perspective view of a portion of the coffee brewing device of FIG.

4 is a perspective view of the coffee brewing device of FIG. 2. FIG.

[Explanation of symbols]

 41 Heater block 68 Base 86 Water container 87 Pump 87a Anti-vibration rubber 88 Suction pipe 89 First opening 90 Communication bushing 106 Capsule

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Hideaki Kobayashi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A water container which has an opening on the bottom surface and is erected on a base, and an intake pipe which is located below the opening and faces the opening with a slight gap, and the base. It has a pump attached to the table via a vibration-proof rubber, and a rubber communication bushing that communicates the opening with the suction pipe, and discharges the water contained in the water container from the pump via the communication bushing. An apparatus for extracting coffee or the like, which is configured to pour hot water onto an object to be extracted such as coffee powder through a boiling water unit.