JP5543411B2 - Beverage cup extractor - Google Patents

Description

  The present invention relates to a beverage brewing apparatus.

  Conventionally, a beverage extraction device that extracts a beverage such as coffee has used a gear pump to send hot water from a boiler tank (hot water tank) to an extraction unit (see, for example, Patent Document 1).

JP 2010-75595 A

However, a beverage brewing device for extracting a beverage from a granular material for beverages such as regular coffee is required to be small and lightweight, especially for home use (small and lightweight). Is desired by users). However, since it is difficult to reduce the size and weight of the gear pump, there is a limit to reducing the size and weight of the entire device.
In addition, the gear pump has problems of abnormal noise generation and failure due to gear meshing and inflow of foreign matter such as scale. Furthermore, as a noise countermeasure, there are many parts such as a sound absorbing member and a soundproofing member around the gear pump, and various sensors to keep the amount of hot water supplied to the beverage powder (pump discharge amount) constant. In addition to making it more difficult to reduce the size and weight, there are problems that the assembly work is complicated and cannot be easily manufactured. In addition, since it is very difficult to maintain a constant amount of hot water to be supplied to the centrifugal pump, the strength of the beverage to be extracted is not stable and the taste does not come out, and the taste changes every serving. There was a problem that the quality of the taste is not stable.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a beverage brewing apparatus that is excellent in quietness, is light and small in size, can be easily manufactured, and that can stably extract a beverage having a good taste.

In order to achieve the above object, a beverage full extraction device according to the present invention supplies hot water to a predetermined amount of beverage granule in an extraction container to extract a full amount of beverage. A supply pipe that communicates and connects a boiler tank that stores water and a supply port that supplies hot water into the extraction container is provided with a pump for supplying hot water, and the pump serves as a diaphragm pump, and the diaphragm pump which has a diaphragm assembly consisting rubber member and the diaphragm drive portion is formed in one piece for compressing and expanding a plurality of bowl-shaped diaphragm and該椀type diaphragm, the diaphragm pump is a circular a columnar electric motor, and a cylindrical shape having integrally shaped as a coaxial heart-shaped in a cylindrical case body in which the diaphragm driving unit is accommodated, constitute the diaphragm pump Gore All rubber members that are in contact with hot water are made of EPDM, and the diaphragm pump is disposed between the boiler tank having a circular shape in plan view and the extraction container having a circular shape in plan view. viewing at the axial center of the boiler tank, the axis of the diaphragm pump, the axis of the extraction vessel, a parallel to parallel form, a flat plane view, the center point of the diaphragm pump, the boiler tank And the distance in the width direction from the straight line to the outer peripheral surface of the diaphragm pump farthest from the straight line is set to be the farthest from the straight line. It is set to be smaller than the separation dimension in the width direction to the outer peripheral surface of the tank .

ADVANTAGE OF THE INVENTION According to this invention, the amount of hot water supplied to the granular material for drinks can be kept constant, and silence can be acquired. The device can be reduced in size and weight without sacrificing taste. In particular, the depth, width, and height of the entire apparatus can be reduced. In addition, the number of parts can be reduced, and manufacturing (assembly) can be performed easily and quickly (manufacturing cost can be reduced). In addition, it is possible to greatly reduce the occurrence of abnormal noises and failures due to foreign matter flowing into the pump. Moreover, since hot water can be drooped and supplied by fixed supply, it has a good taste and is particularly suitable as a drip coffee machine (beverage brewing device).

It is a perspective view of an embodiment of the invention. It is a simplified piping diagram. It is a simplified sectional side view which shows arrangement | positioning of each part. It is a simplified top view which shows arrangement | positioning of each part. It is a principal part expanded sectional view of an extraction part. It is a bottom view which shows an example of a contact member. It is a disassembled perspective view which shows an example of a diaphragm pump. It is a principal part sectional side view showing an example of a diaphragm pump.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
As shown in the embodiment shown in FIGS. 1 to 3, the beverage full extraction device of the present invention includes a boiler unit 3 having a heater 33 for heating water and a boiler tank 31 for storing heated water (hot water), It has an extraction unit 2 having an extraction container 21 in which a predetermined amount of a granular material F for beverage is stored, a cup receiving unit 4 provided below the extraction unit 2 and provided with a beverage cup C, and a push button. The casing body 1 includes an operation unit 6 and a control unit 5 having a control base 50 that controls the operation of the heater 33 and the pump P according to the operation of the operation unit 6. Hot water is supplied to extract a full drink.

  In the casing body 1, there is provided a supply pipe 10 that communicates and connects a boiler tank 31 and a supply port 19 that supplies hot water into the extraction container 21. A suction pipe 11 for interfacing and connecting (connecting) the suction port 81 of the pump P and the bottom of the boiler tank 31 with a pump P for feeding hot water to the supply pipe 10 (pressure feeding); A discharge pipe 12 is provided for connecting and connecting the discharge port portion 82 and the supply port portion 19 of the pump P in communication. The discharge pipe 12 is provided with a check valve 13 (not shown in FIG. 3) for preventing back flow of hot water. The suction pipe 11 and the discharge pipe 12 are made of heat resistant rubber and are, for example, silicon tubes.

  The granular material for beverages (raw material for beverage) F is a granular material obtained by pulverizing coffee beans, regular coffee, or granular material (including leaf pieces) such as Japanese tea, Chinese tea, black tea, and herbs. In other words, the beverage to be extracted is Japanese tea, Chinese tea, black tea, herbal tea, or other tea, or coffee. The predetermined amount is an optimum amount for extracting a full beverage.

7 and 8, the pump P is a cylindrical diaphragm pump Pd, which has a cylindrical electric motor M integrally, and the protruding direction of the output shaft Ma of the electric motor M (the center of the shaft is uniform). In the direction La), a cylindrical suction port portion 81 and a cylindrical discharge port portion 82 are projected.
In addition, it has a diaphragm assembly 95 in which a plurality of (three) saddle-shaped diaphragms 95a are integrally formed, and by driving the motor M, each pump chamber 80 formed by each diaphragm 95a is sequentially compressed. And expansion are repeated, and the fluid (hot water) can be sent quantitatively (the discharge flow rate and discharge pressure are constant).

  In the diaphragm pump Pd, all rubber members that come into contact with hot water are made of heat-resistant rubber. Specifically, the packing 92, the suction valve main body 94, and the diaphragm assembly 95 are formed of heat resistant rubber. The heat resistant rubber is EPDM (ethylene propylene diene rubber). In particular, EPDM is preferably vulcanized using peroxide as a vulcanizing agent (EPDM for peroxide vulcanization). Compared to EPDM of sulfur vulcanization, heat resistance is good (compression permanent deformation due to heat is difficult to increase), so that the flow rate is hardly changed by heat.

  Further, in the diaphragm pump Pd, all the resin members that come into contact with hot water are made of a heat resistant resin. Specifically, the lid 91 and the middle lid 93 are made of heat resistant resin. The heat resistant resin is an SPS resin (syndiotactic polystyrene resin). Since heat resistance is good, flow rate changes and failures (problems) due to thermal deformation are prevented.

In addition, this diaphragm pump Pd is more excellent in quantitativeness (discharge flow rate stability) than a gear pump having the same discharge amount (work amount).
Moreover, the diaphragm pump Pd is excellent in quietness compared with the gear pump. For example, when the driving sound (operating sound) is measured by a noise meter at a position 300 mm away from the diaphragm pump Pd, it is 37.2 db. In the case of a gear pump, it is 60.5 db. Furthermore, when the gear pump was installed in the soundproof box (enclosed by the soundproof box), it was 51.5 db. That is, the diaphragm pump Pd is as quiet as about 72% to 73% when compared with 100% of the noise of the gear pump installed in the soundproof box (measured against soundproofing).

Further, the diaphragm pump Pd is smaller than the gear pump. For example, the diaphragm pump Pd has a substantially cylindrical shape (excluding the protruding cylindrical portion) having a diameter of about 30 mm × a length of about 60 mm, while the gear pump is about 70 mm × about 55 mm × about 80 mm in vertical, horizontal, and height dimensions. The size of the soundproof box is approximately 80 mm × about 80 mm × about 80 mm. When the volume of the soundproof box is assumed to be 100%, the size is about 9% (10% to 13% considering the protruding cylindrical portion).
The diaphragm pump Pd has a weight of 60 to 70 g, which is lighter than the weight of the soundproof box and the gear pump.

Further, as shown in FIG. 3, in a side view, the diaphragm pump Pd is disposed between the boiler tank 31 and the extraction container 21, and the axis L3 of the boiler tank 31, the axis L2 of the extraction container 21, The shaft center Lp of the diaphragm pump Pd is arranged in parallel.
Further, as shown in FIG. 4, the diaphragm pump Pd is disposed between the boiler tank 31 and the extraction container 21 in a plan view. In plan view, the center point Oa of the boiler tank 31 (circular in plan view) and the center point Ob of the extraction container 21 (circular in plan view) are arranged on a straight line (on a straight line E). Yes. The diaphragm pump Pd is arranged in a circular shape in plan view, and its center point Od is located away from the straight line E (not on the straight line E), and (inside the casing body 1), the central point Oa of the boiler tank 31. And the center point Ob of the extraction container 21.
Furthermore, the separation dimension Yp from straight E to the outer surface of the farthest diaphragm pumps Pd, is set to be smaller than the separation dimensions Y a from straight E to the outer surface of the farthest boiler tank 31.

In this way, by not providing the diaphragm pump Pd below or above the boiler tank (hot water tank) 31, the height dimension H of the casing body 1 (device) is reduced (or the height of the boiler tank 31). It is possible to set a larger dimension). Further, the extraction container 21 and the boiler tank 31 can be disposed close to each other, and the depth dimension D can be set small. Moreover, it is not necessary to set the width dimension W large by the diaphragm pump Pd (the width dimension W is sufficient to surround the boiler tank 31).
Specifically, the casing body 1 (apparatus) has outer dimensions such as a width dimension W of 80 mm to 120 mm, a depth dimension D of 190 mm to 235 mm, and a height dimension H of 190 mm to 240 mm, and has a narrow vertically long shape. Yes, it is small and light, and is ideal for home use.

  In FIG. 3, the boiler tank 31 is formed in a bottomed cylindrical shape, and includes a heater (heat transfer tube) 33 for heating water and a cover member 32 for protecting the heater 33 therein. Yes. A detachable tank lid member 34 is provided at the upper opening of the boiler tank 31. The boiler tank 31 has a capacity capable of storing hot water from which two to four or four or more drinks can be extracted. Specifically, the capacity is about 400 cc to 600 cc. A control unit 5 (control board 50) is disposed below the boiler tank 31.

  Further, by using the diaphragm pump Pd in the casing body 1, supply amount adjustment sensors such as a flow sensor (meter) such as a flow meter, a discharge pressure sensor (meter), and a flow velocity sensor (meter) are omitted, The water level sensor (total) and the adjustment (replenishment) tank for adjusting the amount of hot water in the boiler tank 31 are omitted, thereby reducing the weight and size. Further, the three-way switching valve and the air flow path for sending air to the pump P in order to discharge the remaining hot water in the pump P are omitted, and the weight and size are reduced.

Further, as shown in FIG. 5, a predetermined amount of the powder granule F is contained (filled) in a filling container 40 (in advance).
The filling container 40 is made of a non-woven fabric, and is provided with a bowl-shaped filter unit 41 in which an optimum amount (predetermined amount) of beverage granular material F for extracting one cup of beverage is stored, and a filter unit 41 are provided. And a disc-shaped lid portion 42 to be lidded.
The lid part 42 is disposed on the filter part 41 side and does not have water permeability, and has a first sheet 42a made of one or a plurality of resin films, and has a water permeability and is laminated on the first sheet 42a. And a second sheet 42b. And the hot water passage hole 42c for allowing hot water to pass through is formed in the approximate center of the first sheet 42a. That is, the beverage granule F is stored in the extraction container 21 in a state of being stored in the filling container 40.

The extraction container 21 has a locking flat surface 21a for locking the outer peripheral edge (outer collar part) 42d of the lid part 42 of the filling container 40 at the opening edge of the upper surface. Furthermore, the cross-sectional shape of the inner peripheral wall is formed in a saddle shape (a saddle shape or a U shape), and the outer peripheral surface (outer surface or outer bottom surface) of the filter portion 41 of the filling container 40 and the inner periphery of the extraction container 21 A predetermined gap is provided between the surfaces (inner side surface or inner bottom surface). In other words, the inner peripheral shape of the extraction container 21 is formed along the outer peripheral shape of the filter part 41, and a saddle-shaped space 49 is formed between the extraction container 21 and the filling container 40 (in the accommodated state).
When hot water is poured, the beverage in the filling container 40 exudes (extracts) from the filter unit 41 and falls along the outer peripheral surface of the filter unit 41 and flows out from the extraction port 21b of the extraction container 21. Such a flow reproduces the ideal extraction of the paper drip, and a fragrant and tasty beverage (a beverage such as coffee or tea).

Further, the extraction lid member 22 pivotally attached to the casing body 1 so as to be swingable so as to be switched between the lid opening state and the opening state with respect to the upper opening of the extraction container 21 is provided with the filling container 40 in the lid covering state. An abutting member 23 made of a heat-resistant rubber (made of silicon rubber) that abuts on the substantially central portion protrudes downward.
The contact member 23 forms a supply port portion 19 having a central through hole and communicating with the supply pipe 10. The abutting member 23 surrounds a substantially central portion of the filling container 40 (a position corresponding to the opening edge of the hot water passage hole 42c), is in close contact with the lid portion 42, and when hot water is poured, An annular (annular) seal portion 29 is provided to prevent the lid portion 42 from overflowing so as to spread on the upper surface.

  The seal portion 29 is formed in a downwardly bulging annular shape, and as shown in FIG. 6, surrounds the first seal portion 29a and an annular first seal portion 29a that surrounds the lower opening edge of the supply port portion 19. An annular second seal portion 29b and an annular third seal portion 29c surrounding the second seal portion 29b are provided. A predetermined amount of hot water can be reliably supplied to the beverage granule F (in the filling container 40) without waste, and the taste (quality) can be kept constant. In other words, it has a double or triple annular seal portion 29 surrounding the supply port portion 19.

Next, an operation (usage method) of the beverage full extraction device of the present invention will be described.
In the embodiment described above, the filling container 40 is set in the extraction container 21 and the operation unit 6 is operated in a predetermined manner, whereby the diaphragm pump Pd is controlled by the control unit 5 and hot water is supplied to the filling container 40 in the first predetermined state. After being sent for a time (eg 4 seconds), the supply is automatically paused. The beverage powder F in the filling container 40 is steamed with the hot water sent in the first predetermined time. Then, after steaming for a second predetermined time (for example, 4 seconds), the hot water supply is resumed. By supplying hot water for a third predetermined time (for example, 20 to 30 seconds), the extracted beverage is poured into the cup C, and the extraction operation for one cup is completed. In the case of making the second cup, the first filling container 40 is discarded from the extraction container 21, a new filling container 40 is set, and hot water is supplied.

  Here, it is determined whether or not the steaming has been performed sufficiently effectively by the amount of hot water (the amount of steamed hot water) sent in the first predetermined time, and affects the aroma, taste (concentration), color, etc. of the extracted beverage Effect. The amount of hot water required for steaming may be small, but if it is too small, steaming will be insufficient, and if it is too much, a large amount of beverage will be extracted, so it is important to supply a predetermined amount.

  Therefore, in the case of the diaphragm pump Pd (Example A) and the case of the gear pump (Comparative Example A), the flow rate per second is measured in the extraction operation for one cup, and the measurement is performed for five cups (5 times). ) And the difference between the maximum flow rate and the minimum flow rate of the five measurement results (flow rate difference at each extraction) was calculated. The results (comparison table) are shown in Table 1 below. The ambient temperature is 20 ° C. to 25 ° C., and the hot water temperature is 80 ° C. to 90 ° C.

  As apparent from Table 1, the flow rate of Example A is more stable than that of Comparative Example A. In particular, in the first 4 seconds to obtain a steaming effect that is important for taste and aroma, the flow rate difference is suppressed to 75% to 50% of the gear pump, and the flow rate is maintained even for a short time of 5 seconds or less from the start of supply. It is clear that it is stable. In addition, the supply amount (in 30 seconds) for performing extraction is more stable in Example A.

  Further, the apparatus in which the pump P is the above-described diaphragm pump Pd is the first embodiment, the pump P is a centrifugal pump as a comparative example 1, the gear pump is a comparative example 2, and the vibration pump is a comparative example 3. Table 2 below shows a comparison of quantitativeness, heat resistance, silence, and size. In addition, the granular material F for drinks was regular coffee.

In Comparative Example 1 (centrifugal pump), when the air biting occurs, or when the discharge pressure is small and the check valve becomes a resistance, the supply amount of hot water changes or the supply stops, it cannot be stably supplied, and it is full The taste and aroma changed every time.
In Comparative Example 2 (gear pump), the operation noise was large and the overall size of the device was large (not suitable for home use).
In Comparative Example 3 (vibration pump), the pulsation was intense, the noise was large, the quantitativeness could not be secured, and the taste (quality) could not be kept constant.
In Example 1, sufficient quantitativeness could be obtained without a large change in flow rate. Moreover, even if it was quiet and the hot water of 80 to 90 degreeC, there was no malfunction.

  Further, in Example 1, the flow rate does not vary due to the resistance of the check valve, and the hot water does not hit the beverage granule F in a sprayed state (quantitatively). Thread) and was suitable for the drip method. For example, if the supply pressure of hot water is high and it is supplied too vigorously (at once), the beverage powder F is pushed away to the outside by the hot water (the beverage granule F itself becomes funnel-shaped). Thus, there is a problem that hot water passes through the center of the beverage granule F (the beverage to be extracted becomes thin), but this did not occur in Example 1.

  Moreover, when the taste, fragrance, etc. of the extracted coffee were actually compared, Example 1 was able to obtain high evaluation in both fragrance and taste compared with Comparative Examples 1-3. This is probably because the hot water was supplied as set. Moreover, even when multiple cups were made and compared, the strength of the extracted coffee did not change from cup to cup, and there was little variation in taste and aroma, and delicious coffee was obtained no matter who operated it. This is considered to be because the quantity of hot water supplied does not change no matter how many times the operation (extraction work) is performed, and the quantitativeness is good.

  The design of the present invention can be changed, and without using the filling container 40, a filter (paper) for drip is laid (interior) in the extraction container 21 to store the powder F for beverages. Also good. The outer shape of the casing body 1 may be a shape other than that illustrated. The pump P may be a diaphragm pump Pd other than that shown in the drawing as long as hot water is allowed to flow into the pump chamber 80 formed by the bowl-shaped diaphragm 95a and discharged. The diaphragm assembly 95 may be one in which two or four saddle-shaped diaphragms 95a are integrally formed. The shaft center (single shaft center) Lp of the pump P can be said to be the shaft center of the output shaft Ma of the motor M.

  The diaphragm pump Pd will be described more specifically. As shown in FIGS. 7 and 8, a resin cylinder having a suction cylinder portion (suction port portion) 81 and a discharge cylinder portion (discharge port portion) 82 is used. Lid 91, resin middle lid 93, rubber packing 92 interposed between lid 91 and middle lid 93, and rubber umbrella attached to middle lid 93 A rubber diaphragm assembly 95 in which a plurality of (two to four) saddle-shaped diaphragms 95a are connected by a planar diaphragm 95b orthogonal to the uniaxial center Lp, and a diaphragm assembly A resin retainer member 96 that supports the diaphragm 95b of the resin 95, a resin eccentric rotating body 99 that is rotated by the output shaft Ma of the motor M, and a single axis Lp attached to the eccentric rotating body 99 in an inclined manner. A metal crankshaft 98 that rotates (turns) around, and a radial tree that swings with the crankshaft 98 And SeiYuradoban 97 includes a cylindrical case body 90 made of resin bottom for supporting the retainer member 96, a.

  Further, the retainer member 96 is formed of a wear-resistant resin. The wear resistant resin is polyacetal. The retainer member 96 may be formed of a heat resistant resin (SPS resin). Further, the cylindrical case body 90 may be formed of a heat resistant resin (SPS resin).

  The diaphragm assembly 95 includes three diaphragms 95a arranged around the uniaxial center (pump shaft center) Lp at equal circumferential distribution (in the case of three, every 120 degrees) and connected by a diaphragm 95b. Each diaphragm 95a has a short cylindrical discharge valve film 95c formed by extending the opening edge of the diaphragm 95a from the diaphragm 95b in one axial direction La. A diaphragm driving portion 95d that compresses and expands the diaphragm 95a is provided so as to protrude from the diaphragm 95a in the axial direction Lb. A packing edge 95e is provided on the outer peripheral edge of the diaphragm 95b.

The inner lid 93 has a common discharge recess 93c for discharging fluid from the discharge port portion 82 on the side of the axial center other direction Lb. And the bottomed short cylindrical valve seat part 93e is protrudingly provided in the axial center other direction Lb. A part of the outer peripheral wall portion of the valve seat portion 93e is a discharge valve seat portion that is covered with the discharge valve film 95c so as to be in close contact with the diaphragm 95a.
An attachment through hole of the suction valve main body 94, a suction through hole 93f that is opened and closed by the valve portion 94a of the suction valve main body 94 and communicates with the pump chamber 80 and the suction opening 81 in the open state. , And the place where the valve portion 94a comes into contact with and separates from the bottom wall portion is defined as a suction valve seat portion. The number of diaphragms 95a and valve seats 93e is not limited to three, and may be two or four.
The lid 91 has a suction recess 91c that communicates with the suction port portion 81 on the other side Lb of the shaft center, and a discharge recess 91d that is partitioned by the suction recess 91c and an annular wall and communicates with the discharge port portion 82. ing.

  Then, each diaphragm drive unit 95d reciprocates sequentially by the eccentric rotating body 99, the crankshaft 98, and the swing plate 97, and each diaphragm 95a (formed by each diaphragm 95a and each valve seat portion 93e). Each pump chamber 80) is configured to sequentially repeat compression and expansion. Further, hot water does not enter into the drive portion space 83 surrounded by the other side Lb of the axis 95 of the diaphragm 95b, the retainer member 96, and the cylindrical case body 90. In other words, hot water does not contact the drive unit (the output shaft Ma, the eccentric rotating body 99, the crank shaft 98, the swing plate 97, and the diaphragm drive unit 95d) for compressing and expanding the pump chamber 80 (diaphragm 95a). It has become.

  As described above, the beverage full extraction device of the present invention supplies hot water to a predetermined amount of beverage granular material F in the extraction container 21 to extract a full amount of beverage. The supply pipe 10 that connects the boiler tank 31 and the supply port 19 for supplying hot water into the extraction container 21 are connected to a pump P for supplying hot water, and the pump P is connected to the diaphragm. Since it was set as pump Pd, the amount of hot water supplied to the granular material F for drinks can be kept constant, and silence can be obtained. The device can be reduced in size and weight without sacrificing taste. In addition, the number of parts such as a water level sensor for adjusting the water level of the boiler tank 31 can be reduced, and manufacturing (assembly) can be performed easily and quickly, and the manufacturing cost can be reduced. In addition, the occurrence of abnormal noise and failure due to foreign matter flowing into the pump P can be greatly reduced. In addition, since hot water can be continuously fed in a string form, it has a good taste and is particularly suitable as a drip coffee machine (beverage brewing device). There is no need for a soundproofing member (soundproof box member) or the like like a gear pump, making it possible to realize quietness, contributing to weight reduction, size reduction, and reduction in the number of parts.

  Further, the diaphragm pump Pd has a heat-resistant rubber diaphragm assembly 95 in which a plurality of saddle-shaped diaphragms 95a are integrally formed. Therefore, the number of parts of the diaphragm pump Pd can be reduced, and the size and weight can be reduced. can do. The plurality of pump chambers 80 (saddle type diaphragms 95a) can be continuously expanded and contracted, and a predetermined flow rate can be stably obtained. Even if a foreign object enters, it is made of rubber, so it can be bitten and there is no possibility of overloading the motor M, and the inside of the pump P can be passed through to reduce the possibility of failure.

  Since the heat-resistant rubber is EPDM, even when the hot water is at a high temperature of 80 ° C. to 90 ° C., the vertical diaphragm 95a forming the pump chamber 80 can be prevented from being thermally deformed. The amount of hot water discharged from the pump chamber 80 can be kept constant. That is, a predetermined amount of hot water can be supplied to the beverage granular material F in the extraction container 21, and the taste (concentration and flavor) of each cup can be stabilized.

  Since the diaphragm pump Pd is disposed between the boiler tank 31 and the extraction container 21 in plan view, the depth dimension D, width dimension W, and height dimension H of the casing body 1 (the entire apparatus) can be reduced. A device suitable for use can be obtained.

10 Supply pipe
19 Supply port
21 Extraction container
31 Boiler tank
90 cylindrical case body
95 Diaphragm assembly
95a Vertical diaphragm
95d Diaphragm Drive Unit F Beverage Granules E Straight Line L2 Axle Center of Extraction L3 L3 Center of Boiler Tank Lp Axis of Diaphragm Pump M Electric Motor Oa Center Point of Boiler Tank Ob Center Point of Extraction Container Od Center of Diaphragm Pump Point P Pump Pd Diaphragm pump
Ya separation dimension
Yp separation dimension

Claims (1)

In a beverage full extractor for supplying hot water to a predetermined amount of beverage granules (F) in an extraction container (21) and extracting a full beverage,
A pump for feeding hot water to a supply pipe (10) communicating with a boiler tank (31) for storing hot water and a supply port (19) for supplying hot water into the extraction container (21) ( P),
The pump (P) is a diaphragm pump (Pd),
The diaphragm pump (Pd) is made of a rubber member in which a plurality of vertical diaphragms (95a) and a diaphragm driving part (95d) for compressing and expanding the vertical diaphragms (95a) are integrally formed. The diaphragm pump (Pd) has a cylindrical electric motor (M) that is coaxial with a cylindrical case body (90) in which the diaphragm drive unit (95d) is housed. a cylindrical shape having integrally shaped as,
A rubber member constituting the diaphragm pump (Pd), wherein all rubber members in contact with hot water are made of EPDM,
The diaphragm pump (Pd) is disposed between the boiler tank (31) having a circular shape in plan view and the extraction container (21) having a circular shape in plan view, and the shaft of the boiler tank (31) is viewed in side view. The core (L3), the axis (Lp) of the diaphragm pump (Pd), and the axis (L2) of the extraction container (21) are arranged in parallel ,
In plan view, the center point (Od) of the diaphragm pump (Pd) is determined from a straight line (E) connecting the center point (Oa) of the boiler tank (31) and the center point (Ob) of the extraction vessel (21). The distance between the outermost surfaces of the diaphragm pump (Pd) farthest from the straight line (E) and the separation dimension (Yp) in the width direction from the straight line (E) are set to the boiler tanks farthest from the straight line (E). 31) A beverage full brewing device, which is set to be smaller than the separation dimension (Ya) in the width direction to the outer peripheral surface of 31) .

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