JPS6348535B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a machine for brewing beverages such as coffee.

Conventional structure and its problems Traditionally, when making coffee for general household use, water was injected into a drip-type, siphon-type, or percolator-type extractor, and the power switch was operated. Coffee was extracted by heating and boiling water, and then pouring the heated hot water over coffee grounds.

For this reason, the preparation work before brewing the coffee is troublesome and the preparation time is required, and since the extractor is configured to supply cold water to boiling water, the coffee extraction time requires boiling water. This adds to the time required and makes it impossible to brew coffee immediately and easily when the user wants to drink coffee or for unexpected entertainment.
In addition, the conditions for extracting flavorful and delicious coffee are generally referred to as "high temperature (91-96°C)" because the effective components of coffee are extracted in a short time at high temperature, and the defective components are extracted thereafter.
℃) in a short period of time (3 to 4 minutes). However, it takes 10 to 12 minutes to extract 5 cups (650 c.c. of water) of coffee liquid with a power consumption of 500 W, and the extraction temperature is also high because boiling water is discharged containing cold water. The drip method has a low extraction temperature of 80-86℃, and the siphon method takes less than 1 minute even when extracted with boiling water. It is not something that can be extracted effectively, and the extraction time changes sequentially from the maximum cup (5 cups) to the minimum cup (1 cup), making the above extraction conditions even more complicated and making it possible to extract a stable and delicious coffee liquid. It wasn't something.

Therefore, to make the taste and aroma of coffee more satisfying, it is possible to somewhat compensate for this by increasing the amount of coffee powder, but this increases the extraction time and is also uneconomical. In addition, the coffee tends to be too strong and taste bad.

Furthermore, there were many deficiencies in the structure of the machine, such as the operation of inserting and removing the coffee liquid storage cup when drinking coffee and the cleaning up after use, and there were problems that needed to be improved.

In addition to the above method of extracting at home,
There is a hot water storage type brewer for commercial use that is intended for brewing large amounts of coffee. This is heated in advance by a heater and stored in a container, and when necessary, the same amount of water as the amount you want to extract is poured from the top of the container, the water in the container is pushed out in a sealed form, and the siphon is turned on. The effect is to discharge the stored hot water and pour it over the coffee powder prepared in the basket to extract coffee.

However, since the hot water in the container is injected and pushed out, the hot water (96-98℃) is cooled by the water and discharged, and when it comes into contact with the coffee grounds (depending on the amount of hot water and the amount of water poured) However, if you extract 10 cups (1500c.c.) in a general 2.6 container, the temperature will drop to around 88℃, and there is a limit to the amount of water that can be extracted, and less than 3 cups (400c.c.) will be discharged. It is limited to some commercial use and has not been adopted for general household use.

In addition, a preparatory operation for injecting water is required, and the hot water dispensing time is not constant, and for 5 cups and 10 cups, the dispensing time is approximately double, which is 3 to 4 minutes, which is the requirement for brewing delicious and flavorful coffee. The difference in aroma and taste of the extracted coffee occurs because the extraction time cannot be ensured uniformly.

In addition, since the container has a nearly airtight structure with a lid except for the injection tube of about 12φ, cleaning the inside of the container is not possible. It was discharged along with hot water, inhibiting the extraction of the coffee's active ingredients and causing the coffee to taste unpleasant.

Purpose of the Invention The present invention was made in view of the above circumstances, and its purpose is to enable extraction to be completed in a short time with a simple operation without requiring water pouring, and to provide delicious extraction conditions. It is possible to fully satisfy the coffee extraction conditions of ``extraction at high temperature for a short time'' and extract a flavorful and delicious coffee liquid, and the amount of coffee extracted is not limited, and the extraction operation is reliable. The object of the present invention is to provide a beverage brewing machine that can dramatically increase the number of brewing conditions that can be achieved.

Structure of the Invention In order to achieve the above object, the beverage brewing machine of the present invention includes a hot water storage tank having a heat retention function in the machine body, a hot water storage case having a valve function in the lower pouring spout, and accommodating raw materials such as coffee powder. and a cup for extracting a beverage using hot water from the hot water storage case, a cup for receiving the beverage from the hot water storage case, a water heater for supplying hot water from the hot water storage tank to the hot water storage case, and a hot water supply device for supplying hot water from the hot water storage case to the hot water storage case. By installing a backflow device that returns the hot water to the hot water storage tank, it is possible to store hot water at a high temperature at all times, and when you want to drink coffee, you can easily discharge the stored hot water without having to pour water. It is easy to operate and can complete the extraction in a short time, and the extraction conditions are such that you can set the required amount of stored high-temperature hot water and pour it for the required time to create a delicious cup of coffee. Not only can you ensure the conditions for coffee extraction, allowing you to always extract flavorful and delicious coffee, but you can also easily return the hot water to the hot water storage tank even if you accidentally discharge more than the required amount into the hot water storage case, making it economical. It has various excellent features such as:

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In Figures 1 to 3, 1 is the aircraft;
This is a flat rectangular base 2 and this base 2.
Consisting of a machine frame 3 that stands on the left side of the upper surface, an upper wall part 4 that is attached to the upper part of this machine frame 3 and has an eaves part 5 to the right side, and a mounting part 6 that is attached below the eaves part 5, The inside of the machine frame 3 is a hot water tank storage part 7, and the right side thereof is an extraction storage part 8 as if the machine body 1 is cut out and released in the shape of a letter. or,
Above the extraction storage section 8, there is a canopy section 5 and a placing section 6.
A hot water storage case housing section 9 is formed. Reference numeral 10 denotes a stainless steel hot water storage tank to which a tank water boiling heater 11 and a tank heat retention heater 12 are wrapped around the outer periphery of the lower part, and is placed in the hot water storage tank storage section 7, and has a cylindrical shape with an approximately U-shaped cross section and an opening at the top. None, the upper end outer flange 13 is inserted and placed from above into the lower end inner flange 16 of the upper wall recess 15 via the tank gasket 14,
A fixing plate 17, which is spot welded to the lower outer bottom surface, is attached to the base attachment part 18 by tightening it with screws a. Reference numerals 19 and 20 designate a thermostat that controls the tank water heater 11 and a TRS that controls the tank heat-retaining heater 12, which are attached to the outside of the bottom of the hot water storage tank 10 via appropriate means.

Reference numeral 21 denotes a removable inner lid that covers the upper opening surface of the hot water storage tank 10, and is composed of an injection guide plate 22 made of heat-resistant synthetic resin, and a heat-resistant inner cover fixed to the upper surface of the injection guide plate 22 by welding or the like. a pipe cover 23 made of stainless steel synthetic resin; a protection plate 25 made of stainless steel that is attached to the outer periphery of the lower surface of the injection guide plate 22 via an inner lid packing 24 via means such as screws (not shown); It consists of a hot water supply pipe 26 that is inserted and fixed in an airtight manner upward and downward through the lid main body 21.

The hot water supply pipe 26 is disposed on the right side of the hot water storage tank 10 on the side of the extraction storage section 8, and its lower end is located near the inner lower surface of the hot water storage tank 10, while its upper end is connected halfway to the protection plate 25 of the inner lid 21, It passes through a pipe insertion portion 27 in the space formed by the guide plate 22 and the pipe cover 23, and its upper end surface slightly protrudes above the inner lid 21. Further, an injection port 28 for injecting water is formed inside the inner lid 21, and an injection guide plate 2 of the inner lid 21 guides the water to the injection port 28.
The upper surface of 2 forms an inclined surface b that rises sequentially toward the outside.

Reference numeral 30 denotes a lid body which is detachably attached to the upper wall recess 15 and has an air-tight packing 29 at its lower part that presses against the upper surface of the injection port 28 of the inner lid 21 in an airtight state using elasticity, and has an air pump function. Built-in. This air pump function uses the upper and lower openings 3.
1 and 32 and a bellows part 33, and a bellows pump 34 whose lower end is engaged with the upper opening 32 of the bellows pump 34 in a manner that prevents it from coming off, and whose upper and lower parts are capable of closing the opening 32 with a seal ring 36 on the upper surface. A movable valve body 37 and a push plate 35 formed by pressing the valve body 37 are disposed within the bellows pump 34, and have one end on the inner surface of the lower end of the bellows pump 34 and the other end on the inner surface of the valve body 37. It is composed of a spring 52 that comes into contact with the bellows pump 34 and acts to provide a restoring force to the bellows pump 34. Then, the air pump function section connects the outer periphery of the bellows pump lower opening 31 to the inner lid inlet 2.
The cover 30 is fixed to an opening hole 38 at the lower end of the cover provided opposite to the cover 8, and the upper part thereof is positioned below a push plate 35 which is slidably engaged from the outside of the upper part of the cover 30.

In addition, in order to attach and detach the lid body 30 to and from the body 1, the lower outer peripheral recess 39 and the protruding engaging part 40 provided in the upper wall recess 15 are engaged, and the other side of the eaves part 5 is connected to the spring 41.
This is done by fitting the claw part 43 of the knob 42 which is energized through the fitting hole 44 provided in the upper wall recess 15, thereby causing elastic deformation of the lower airtight packing 29 and airtightness of the outer periphery of the inner lid 21. Due to the elastic deformation of the packing 29, the upper part of the hot water storage tank 10 is separated by the inner lid 21 and the lid body 30.
Therefore, the area other than the injection port 28 is kept airtight.

On the contrary, the operation for removing the lid body 30 from the machine body 1 is as follows.
Push up the knob 42 against the force of the spring 41
3 away from the fitting hole 44, the protruding engagement portion 4
This can be done using 0 as the fulcrum.

This attachment/detachment method is not limited to this embodiment.
5, a screwing method using screws formed on the inner surface and the outer periphery of the lid body 30 may be adopted.

Reference numeral 45 designates a socket 48 whose one end is fitted onto the upper end of the hot water pipe 26 of the inner lid 21 via a water pipe packing 46, and whose other end opening 47 is provided on the upper surface of the eaves part 5.
The discharge ports are arranged to face each other upward, and the main body except for the fitting part to the water pipe bushing 46 projects above the eaves part 5, and the entire discharge port 45 is configured to be freely rotatable via the water pipe bushing part 46. To do this, grab the rotary operation knob 54 protruding from the top surface of the discharge port cover 53 that covers the discharge port 45, and rotate it 90 degrees to the left so that the opening 47 protrudes from the side of the body 1 as shown in Figure 3. It is set to be dimensionally related.

Reference numeral 49 denotes a hot water storage case disposed in the hot water storage case storage section 9 below the socket 48, which has a pouring spout 50 on the lowermost surface of the lower part and a flow control valve function 51 for opening and closing this pouring spout 50; is sandwiched between the eaves part 5 and the mounting part 6 and attached with screws or the like (not shown).

Reference numeral 55 is a valve knob for operating the flow rate control valve function 51 from the outside, and the outflow amount is controlled by a control function that freely changes the opening area (flow path) of the pouring port 50.
That is, not only can the pouring time be freely adjusted, but also hot water can be stored by closing the pouring port 50.

Further, the hot water storage case 49 is provided with a water level gauge 56 that allows checking the amount of hot water stored from the outside.
In the extraction storage section 8 below the hot water storage case 49, a drain case 61 and a cup 75 are arranged.

This case 61 has an upper outwardly protruding step portion 59 on a pair of rails 58 formed at the lower part of the placing section 6.
It is arranged on the upper part of the extraction storage part 8 so that it can be freely mounted.

A paper filter 60 is housed inside, and its cross section is approximately V-shaped, with a stepped portion 59 at the top opening.
A curved diffuser 62 having an apex at the center located below the pouring port 50 of the hot water storage case 49 is inserted through a communication hole 57 on the bottom surface of the placing part 6, and the overflow case 61 is dispersed by the diffuser 62. A case lid 64 having a plurality of sprinkling ports 63 communicating therein is attached. In addition, an extraction port 65 is provided on the bottom surface of the case 61.
The extraction port 65 is provided with an extraction valve 67 that is biased by a spring 66 and acts to close the extraction port 65 from inside the case 61;
The extraction port 6 is opened from the outside of the lower part against the force of the spring 66.
An operating lever 68 that operates up and down to release 5.
is installed.

This actuating lever 68 has an annular rib 6 which extends inwardly from the extraction port 65 of the case 61 and protrudes outward from the lower part.
9 and the other sliding hole 71 with both ends supported, and the other sliding hole 71 side is configured to be freely rotatable up and down using the locking hole 70 as a fulcrum. , the lower end of the extraction valve 67 in contact with the concave contact surface 72 having the drip hole 73 in the middle is pushed up from below to open the extraction port 65. This operation is configured to be performed automatically in conjunction with the operation of the cup 75 in and out of the body 1, and a cup lid abutting projection protruding from the lower surface of the annular rib 69 is located near the sliding hole 71 of the operating lever 68. 74 is formed.

The cup 75 is detachably attached to a cup mounting section 76 provided on the base 2 below the brewing storage section 8, and stores coffee liquid. A cup lid 77 is attached to the upper surface of the cup 75, and a handle for putting in and taking out the cup is provided on the side surface. Here, the shape of the cup lid 77 includes a circular bulge 78 projecting upward, a case 61 extraction port 65 and an operating lever 6 inside the circular bulge 78.
An opening hole 79 facing the drip hole 73 of No. 8 is formed guided by an inclined guide surface 80.

Reference numeral 82 denotes a heat insulating plate that is attached to the cup mounting portion 76 from the inside via the heater gasket 81, and is made of a good thermal conductor (for example, made of aluminum) that transmits the heat from the cup insulating heater 83 on the back side to the cup 75 from the bottom bottom surface. The temperature is controlled by a thermostat 84 for keeping the cup warm, which controls the energization of the heater 83 for keeping the cup warm.

In addition, the hot water storage case 49 is provided with a flow path through which hot water can flow back into the hot water storage tank 10, as shown in FIG. An inlet 87 consisting of a metal fitting 86 is provided in the middle of the flow path on the side of the space above the specified water level of 10.
8 via tube A89 and tube B90
are connected and concatenated by.

The pot 88 is provided with a communication hole 93 whose flow path can be opened and closed by rotating an external backflow knob 92 linked to a pot shaft 91 by 90 degrees.

Further, the positional relationship between the outlet 85 of the hot water storage case 49 and the inlet 87 of the hot water storage tank 10 is such that the outlet 85 is disposed above the inlet 87 and hot water naturally falls into the hot water.

However, this backflow configuration is not limited to this embodiment;
For example, it may be configured using a pump or the like, and this embodiment is proposed as one of the simpler and cheaper configurations.

Next, the electric circuit will be explained with reference to FIG. 101 and 102 are power terminals connected to, for example, a 100V single-phase AC power supply, 103 is a power switch (operation button 104 is shown in FIG. 1), and power switch 103 is connected to a protective temperature fuse 107. The other end power terminal 10 to be connected
2 (between A and C), the tank water heater 11 and the thermostat 19 are connected in series between the tank water heater 11 and the thermostat 19, the tank heat retention heater 12 and the TRS, and the cup heat retention switch 105 (as shown in Figure 1). An operation button 106 is shown), a heater 83 for keeping the cup warm, and a thermostat 84 for keeping the cup warm are connected in parallel.

108 and 109 are tank water heaters 1
The water boiling indicator lamp and the warming indicator lamp indicate the hot water heating and warming status of the hot water storage tank 10 in conjunction with the heat generation and stoppage of the hot water storage tank 10.The common contact point is set as point B between the tank water heater 11 and the thermostat 19, and the power terminal side (A The other contact point of the boiling water indicator lamp 108 is placed at the point (point), and the other connection point of the heat retention indicator lamp 109 is placed on the power terminal 102 side (contact C side).

Reference numeral 110 denotes a cup heat retention indicator lamp that lights up when the cup heat retention switch 95 is closed.
It is connected between the contacts C on the side.

Next, the operation of the above configuration will be explained.
First, when the knob 42 of the lid 30 is pushed up by hand and the claw portion 43 of the knob is disengaged from the fitting hole 44 of the upper wall recess 15, the lid 30 is rotated about the protruding engagement portion 40 as a fulcrum. It can be removed from fuselage 1.

Then, fill the water tank 1 with a jug such as a jug.
0, but at this time there is no need to take out the inner lid 21, and even if the injection position shifts or the inner lid 21 hits the top surface and rebounds, the inner surface of the recess 15 of the upper wall 4 is a water-shielding material. This prevents the outside of the machine from getting wet. Moreover, since the mirror slope b of the injection guide plate 22 works to smoothly guide the splashed water toward the injection port 28, the user can easily and safely pour water without worrying about the water injection operation. The amount of water injected into the hot water tank 10 is 2.2 to 3.0
The amount of water to be injected is displayed on the water amount display section 111, which is made visible from the outside of the aircraft 1 using a water pipe (not shown) connected to the hot water storage tank 10, so that the required amount of water to be injected can be confirmed. It is composed of
Water injection operation and confirmation of the amount used can be easily performed without removing the lid body 30 each time.

After pouring water into the hot water storage tank 10, the lid body 30 is assembled into the body 1 in the opposite manner to the removal operation.

At this time, the hot water storage tank 10 is communicated with the outside only through the gap between the upper surface opening 32 and the valve body 37 of the bellows pump 34 via the inlet 28 .

Then, when the operation button 104 is operated to close the power switch 103, the tank water boiling heater 11 and the tank warming heater 12 are energized.
The water in the hot water storage tank 10 is heated. At this time, the indicator lamp is the water boiler indicator lamp 1 where 100V is applied.
08 lights up, and the heat retention indicator lamp 109 does not light up because current flows to the thermostat 19 side due to the lamp resistance.

Then, the water temperature rises due to the heat generated by the tank water heater 11 and the tank heat retention heater 12.
For example, if the thermostat 19 is set to operate and open at 90 to 92°C, the thermostat 19 will automatically open when this water temperature is reached.

Then, the water boiling indicator lamp 108 and the tank water boiling heater 11 become a parallel circuit (between A and B),
Through the common contact B, the heat retention indicator lamp 109
A voltage is applied to.

Naturally, a voltage close to 100V is applied to the heat retention indicator lamp 109, which has a high resistance value (lamp resistance is 33KΩ, tank water boiler heater is about 14Ω), and only a small voltage is applied between contacts A and B. Therefore, the water boiler indicator lamp 108 does not turn on, and the tank water heater 11 does not generate heat. On the contrary, keep warm indicator lamp 10
9 lights up, and the hot water storage tank 10 is heated and kept warm only by the tank heater 12.

TRS20 that controls the tank heat retention heater 12
has a smaller differential (width between ON and OFF) than the thermostat 19, and normally the tank water heater 11 will not generate heat again, and the water temperature in the hot water storage tank 10 will rise further after the thermostat 19 is opened. and 96 to 98 by controlling TRS20.
Turn on and off the heat retention state to maintain it at around ℃.

The body 1 is normally energized and stores hot water in this warm state.

When you want to drink coffee, or when you want to immediately brew coffee for unexpected customer service, coffee extraction can be completed in a short time without requiring a water pouring operation.

To do this, grasp the handle 112 of the filter case 61, slide the rail 58 to take it out from the extraction storage section 8, remove the case lid 64, and set the paper filter 60 containing the required number of cups of ground coffee. After attaching the case lid 64, the case 61 is again inserted into the upper part of the extractor storage section 8.

The cup 75 is fitted with a cup lid 77 and mounted on a cup holder 76. At this time, the circular bulging portion 78 of the cup lid 77 pushes up the cup lid abutting protrusion 74 of the operating lever 68 from below, and the lower extraction port 65 of the overcase 61 is opened. Then, the necessary amount of hot water corresponding to the amount of coffee powder is stored in the hot water storage case 49, but at this time, the flow rate control valve 51 is closed, and the backflow waterway tap 88 is connected to the backflow knob 92 shown in FIG.
Do this with the operation display section closed. To supply hot water, push the push plate 35 on the top of the lid 30 up and down several times by hand to activate the air pump function, and the hot water in the hot water storage tank 10 flows through the outlet 45 and the opening 47 into the inlet 48.
Hot water is supplied into the hot water storage case 49 through the hot water storage case 49. This movement causes the lower surface of the push plate 35 to push the valve body 37 and the seal ring 36 to open the upper surface opening 32 of the bellows pump 34.
When the push plate 35 is further pushed down, the internal pressure of the tank 10 increases and hot water is supplied into the hot water storage case 49 from the discharge port 45 via the hot water supply pipe 26. be done.

The amount of hot water supplied to this hot water storage case 49 is determined by the water level gauge 5.
6 allows for visual confirmation, but it is difficult to discharge only the required amount.

Therefore, the hot water is discharged somewhat more, and the excess hot water is removed by operating the backflow knob 92 and opening the communication hole 93 of the pot shaft 91 in accordance with the open position of the operation display section in FIG. 6.
If the outflow port 85 of the hot water storage case 49 and the inflow port 87 of the hot water storage tank 10 are communicated, excess hot water flows into the hot water storage tank 10 side, and the user checks the amount with the water level gauge 56 and operates the backflow knob 92 again. Then, as shown in FIG. 5, the flow path is closed.

Thereafter, the valve knob 55 is operated to a position corresponding to the extraction cup on the operation display section, and the flow rate control valve 51 of the pouring spout 50 is opened. In this flow rate control valve 51, the opening area of the pouring port 50 can be changed by adjusting the valve knob 55 according to the number of cups.If the number of cups is large, the opening area becomes large, and if the number of cups is small, the opening area is changed. It is set to be small so that hot water from the hot water storage case 49 can complete coffee extraction within 3 to 4 minutes, and the opening area gradually increases depending on the closed position and opening on the operation display section according to the number of cups. Cup numbers are displayed that increase as the number of cups increases.

The hot water from this hot water storage case 49 is transferred to the communication hole 57.
The water hits the diffuser 62 of the case lid 64 through the spout, and is dispersed and poured into the coffee powder inside the case 61 through the sprinkling spout 63.

The coffee liquid is filtered through the paper filter 60, passes through the drip hole 73 from the opened lower extraction port 65, and remains in the cup 75 through the open hole 79 of the case lid 77. The coffee liquid stored in the cup 75 is extracted at a high temperature by operating the operation button 106 to close the cup warming switch 105 and energizing the cup warming heater 83 to heat the cup 75 from below. It maintains coffee at an appropriate temperature for a long time, prevents the ingredients from deteriorating, and preserves the taste. In addition, when the operation button 106 is operated, the cup heat retention indicator lamp 110 connected in parallel with the cup heat retention heater 83 lights up, indicating that the power is on. The operation button 106 of this cup warming heater 83 can be operated as needed, and if it is not needed, the cup warming switch 105 can be opened.

When pouring coffee, if only the cup 75 is taken out from the brewing storage section 8, the resistance of the operating lever 68 to the spring 66 is released, and the force of the spring 66 closes the brewing port 65 with the brewing valve 67, allowing the coffee liquid to flow downward. The dripping of the coffee liquid is prevented, and the coffee liquid can be used hygienically without staining the heat insulating plate 82, the outer surface of the machine body 1, or even the floor surface with the dripped coffee liquid.

After use, the coffee grounds in the filter case 61 are thrown away together with the paper filter 60, and the inside of the filter case 61 is simply washed with water and the cup 75 is cleaned.

This hot water can be used repeatedly, and the amount of hot water in the hot water storage tank 10 is checked on the water amount display section 111, and if water needs to be poured, the water can be poured in the same manner as the above-mentioned water pouring operation. Then, the temperature inside the hot water storage tank 10 rapidly decreases to below the return temperature of the thermostat 19, the thermostat 19 is energized, the heat retention indicator lamp 109 goes out, and 100V is applied to the boiling water indicator lamp 108 and the tank water heater 11. The water boiling indicator lamp 108 lights up, the tank water boiling heater 11 generates heat, and the above-described water boiling and warming operation of the hot water storage tank 10 is repeated.

In addition, in this embodiment, if you want to use hot water to make tea, instant food, etc. other than brewing coffee, a hot water supply device outside the machine is required. When rotated by 90 degrees, the opening 47 of the discharge port 45 is set to protrude from the side of the body 1 as shown in Figure 3. Place the container below it and operate the push plate 35 to supply hot water. .

Furthermore, when cleaning the inside of the water storage tank 10, when the lid body 30 and the inner lid 21 are taken out with the discharge openings (45, 53, etc.) upward, the wide opening of the hot water storage tank 10 is opened as it is, and therefore the hot water supply pipe 26 Clean and maintain the inner container in the absence of any other substances. Further, the lid body 30, the inner lid 21, and the discharge port portion can also be taken out to the outside of the machine 1, so they can be taken out and washed with water or cleaned.

As described above, according to this embodiment, the water heater 11 and the heat retention heater 12 are attached to the machine body 1 to provide the hot water storage tank 10 that can keep hot water warm, and the lower water pouring port 50.
A hot water storage case is equipped with a flow rate control function by providing a flow rate control valve 51 in the hot water storage case, a hot water supply device that can supply hot water from the hot water storage tank 10 to the hot water storage case 49 through the hot water supply pipe 26 and the discharge port 45 using an air pump function, and conversely, a hot water storage case. 49 hot water in tube A to hot water storage tank 10
89, a tube B90, and a backflow device that connects the hot water storage case outlet 85 and the hot water storage tank inlet 87 by means of a tube B90 and a hot water storage tank 88. Pour boiling water from Step 10 at high temperature,
The system is configured so that the coffee liquid can be extracted by operating the flow rate control valve 51 in 3 to 4 minutes to complete extraction. It is possible to fully satisfy the "quick extraction time", so the active ingredients of coffee can be effectively extracted, and the extraction of defective ingredients can be reduced, making it possible to extract delicious coffee.In addition, the amount of hot water poured can be accurately controlled by the backflow device. It can be adjusted, so that it can be extracted with a rich and delicious taste without damaging the concentration of the coffee liquid.The pouring time also guarantees accurate operation of the flow rate control valve 51, and the extraction time is constant. This eliminates the variation in

Further, the operation of the flow rate control valve 51 and the operation of the backflow device can be easily controlled from outside the machine via the valve knob 55 and the backflow knob 92, so that the operation can be easily performed.

Further, in the backflow device, the outlet 85 of the hot water storage case 49 is located above the inlet 87 of the hot water storage tank 10, and when the backflow knob 92 is operated to open the flow path, hot water flows from the hot water storage case 49 to the hot water storage tank 10.
There is no need for complicated configurations such as pumps, etc. to push out the hot water.
The 8-part structure is greatly simplified, rational, and reliable. Moreover, the manufacturing cost can be reduced accordingly.

Furthermore, the flow rate control valve 51 of the hot water storage case 49 is
The opening area of the pouring spout 50 is set to be variable, and the setting position is displayed near the valve knob 55 from the outside according to the number of cups, and extraction is always completed in 3 to 4 minutes regardless of the number of cups. This eliminates the problem of conventional methods where the extraction conditions change depending on the number of cups, resulting in variations in the flavor of the extracted coffee. You can extract coffee.

In addition, there is no need for water filling operations as in the past, and there is no need to heat cold water before supplying hot water.
0 hot water can be used immediately, so it can be extracted immediately and requires almost no waiting time. Moreover, the operation is simplified accordingly.

In addition, the hot water supply system is driven by the pressure of a bellows pump, and does not have a limit on the discharge amount due to the siphon effect of conventional hot water storage and expulsion systems, but can supply hot water from any number of cups, from general household use to commercial use with a large number of cups. It is possible to employ up to

In addition, water can be poured into the hot water storage tank 10 from above the inner lid 21 by simply removing the lid 30, and the operation is simple and will not spill out of the machine even if the injection position is shifted. The water flows smoothly from the inlet 28 due to the action of the inclined surface b, and the amount of water can be easily checked from outside the machine using the water amount display section 111. In addition, the amount of water in the hot water storage case 49 is configured so that the amount of hot water supplied can be easily checked using a water level gauge 56 and the amount of water returned to the hot water storage tank 10 can be easily adjusted.

Furthermore, the over case 61 is configured to be detachable from the aircraft body, making it easy to insert and remove the cup 75 using only the cup 75.
The cup 75 is provided with a valve function to prevent coffee liquid from dripping, and its operation is configured to function in conjunction with the operation of the cup 75, thereby greatly improving the usability.

In addition, the extracted coffee liquid in the cup 75 is
The cup warming heater 83 can be operated arbitrarily to control the temperature to maintain the coffee at an appropriate temperature for a long period of time, and the function of preserving coffee for that amount of time is improved, and its operation can be selected, making it easy to use.

In addition, the inside of the hot water storage tank 10 functions for a long time and needs to be maintained and managed in a sanitary manner. Since nothing is left inside and it can be opened as a wide-mouthed outer diameter tank, it is very easy to maintain and clean, and in that respect, it is also excellent in terms of maintenance and cleaning, such as being able to maintain sanitary management.

In addition, when the hot water in the hot water storage tank 10 is used for supplying hot water outside the machine, the discharge port 45 is configured to be rotated so as to increase the utility value.

Furthermore, by providing a hot water storage tank 10 that can boil hot water and keep it warm for a long time, and eliminating the need for a water injection operation when extracting water, it can be installed in a location away from tap water, and the range of use can be greatly improved.

Now, if we consider the case where the hot water storage case 49 does not have a backflow device, it is necessary to pay sufficient attention to the hot water supply to the hot water storage case 49 and stop the hot water supply operation when the required amount is near, but this action is extremely difficult. There is inevitably a certain amount of increase or decrease, and when coffee is extracted using this variation, it causes a difference in the taste of the coffee.

Also, as a method, extract extra water and use water level gauge 5.
6 may be operated to stop the excess dripping and drain it after use, but this is uneconomical and the user has to be careful with the operation, which is inconvenient as the user is glued to the brewing machine 1 during the brewing time. However, in this embodiment, a backflow device is installed, which solves the above problem and dramatically improves the operability of use.In addition, the amount of pouring water for coffee extraction can be set accurately, and the As for the hot water time, the position of the valve knob 55 can be guaranteed to ensure accurate extraction conditions and improve quality.

In this embodiment, the air pump used as the hot water supply device was driven manually, but the present invention is not limited to this method, and this driving may be performed automatically using a motor or the like.

Furthermore, the hot water storage tank 10 is provided so that a stainless steel container is heated and kept warm using heaters 11 and 12, but is not limited to this. A stainless steel vacuum container or the like may also be used.

Effects of the Invention As described in the above embodiments, according to the present invention, the fuselage includes a hot water storage tank with a heat retention function, a hot water storage case with a valve function in the lower pouring port, and raw materials such as coffee powder, and a hot water case for extracting a beverage using hot water from the hot water storage case, a cup for receiving the beverage from the hot water storage case, a water heater for supplying hot water from the hot water storage tank to the hot water storage case, and a hot water supply device for supplying hot water from the hot water storage case to the hot water storage case. Since the system is equipped with a backflow device that returns the hot water to the hot water storage tank, it is possible to extract flavorful and delicious coffee, and the amount of hot water that is supplied can be adjusted accurately, so that the coffee concentration can always be extracted deliciously, and there is no need for water pouring. Not only can it be extracted and drunk in a short period of time, its operability has been greatly improved, making it easy to perform, and it is also easy to discharge only boiling water to the outside of the machine, making it possible to use boiling water for multiple purposes. It is possible to provide a beverage brewing machine with high utility value by making significant improvements in operability and post-processing such as cleaning after use.

[Brief explanation of the drawing]

Fig. 1 is a front external view of a beverage brewing machine according to an embodiment of the present invention, Fig. 2 is a vertical cross-sectional view thereof, Fig. 3 is a plan view when hot water is supplied outside the machine, and Fig. 4 is an electric circuit. figure,
Figures 5 and 6 are a cross-sectional view of the backflow device (left side) and a knob diagram of the operation display section (right side), Figure 5 shows the closed state, and Figure 6 shows the open state. show. 1... Body, 10... Hot water storage tank, 21... Inner lid, 26... Hot water supply pipe, 34... Bellows pump, 30... Lid body, 45... Discharge port, 49... Hot water storage case, 51... Flow rate control valve, 61... over case, 75... cup.

Claims (1)

[Scope of Claims] 1. A hot water storage tank with a heat retention function in the body, a hot water storage case with a valve function in the lower pouring port, and a hot water storage case that stores raw materials such as coffee powder and drinks beverages with hot water from the hot water storage case. a drinking case for extracting water, a cup for receiving the beverage from the drinking case, and a hot water supply device for supplying hot water from the hot water storage tank to the hot water storage case;
A beverage brewing machine comprising: a backflow device for returning hot water from the hot water storage case to the hot water storage tank. 2. The beverage brewing machine according to claim 1, wherein the machine body has an operation part that can control the function of the backflow device. 3. A patent claim characterized in that the backflow device includes a flow path connecting an inlet of the hot water storage tank and an outlet of a hot water storage case located above the inflow port, and a valve device that opens and closes the flow path. The beverage brewing machine according to item 1 or 2. 4. The beverage brewing machine according to claim 1, 2, or 3, wherein the hot water storage case has a water level gauge that allows the amount of water to be checked from the outside. 5. The beverage brewing machine according to claim 1 or 2, characterized in that the valve function of the over-case has an operating section configured to variably set the opening area of the pouring spout. 6. The beverage brewing machine according to claim 1, wherein the hot water supply device operates in conjunction with pressing and driving the air pump. 7. The beverage brewing machine according to claim 1 or 6, wherein the hot water supply device has a switching means that enables hot water to be supplied outside the machine. 8. The beverage brewing machine according to claim 1 or 5, wherein the filter case is detachably attached to the machine body. 9. The beverage brewing machine according to claim 1, wherein the machine body is provided with a heating device for warming the cup.