KR20230044898A - Non-electric coffee brewing apparatus which driving at setting temperature - Google Patents

Abstract

Disclosed is a non-electric coffee extracting equipment that drives at a set temperature. The non-electric coffee extracting equipment that drives at the set temperature of the present invention comprises: a water filling part, leaving a predetermined gas space, wherein water is filled and heat is provided; a filter basket part comprising a supply pipe, a chamber, a filter, and a heat-operated valve; and a coffee container part wherein an extract that has passed through the filter basket part is put. Therefore, the present invention is capable of having an effect of extracting coffee with a taste close to or identical to that of an espresso.

Description

Non-electric coffee brewing apparatus which driving at setting temperature}

The present invention relates to a non-electric coffee extraction device driven at a set temperature.

Espresso refers to coffee brewed with finely ground coffee beans and hot water extracted under high pressure. Even if the same beans are used, the composition ratio of the components constituting the espresso liquid may vary depending on the pressure, temperature, and extraction time during extraction, resulting in a difference in taste.

In general, espresso juice extracted for about 30 seconds at a pressure of 9 bar and a temperature of 93 ° C to 95 ° C is known to have the best taste. Accordingly, espresso extraction devices have been developed in consideration of pressure, temperature, and extraction time conditions that produce the best taste.

Meanwhile, the Mocha Pot is a household espresso extraction device developed in 1933. A moka pot is a device that extracts coffee juice using the pressure of steam generated from heated water. It has the advantage of being small in volume and convenient to use, but does not include a configuration that controls variables related to temperature, pressure, and extraction time. Common.

1 is a cross-sectional view of a moka pot according to the prior art. Referring to FIG. 1, the moka pot 10 includes a port 11 for receiving water, a basket 13 for accommodating ground beans, a container 15 for accommodating an extract, and an upper lid 18.

When heat is transferred from the water inside the port 11, water vapor is generated to increase the air pressure in the inner port 11. The increased air pressure in the port 11 transfers pressure to the water inside the port 11 so that the water rises through the water pipe 14, which meets the ground beans inside the basket 13 and becomes an extract. The extraction liquid further rises and is discharged to the discharge port 17 through the discharge pipe 16.

The discharged extract is accumulated in the container 15, and the user can use the extract contained in the container 15 to prepare and drink a coffee beverage suitable for his or her taste.

The conventional moka pot has the advantage that anyone can easily use it as long as the ground beans are inserted and heat is provided, but the internal pressure is low and the extraction time is long enough to maximize the taste of the coffee.

A technical problem to be solved by the present invention is to provide a non-electrical coffee extraction device capable of extracting coffee at a preset pressure and temperature if only a heat source is provided even in an environment without electricity.

In order to solve the above technical problem, a non-electric coffee extracting device driven at a set temperature according to an embodiment of the present invention is filled with water leaving a predetermined gas space and a water filling unit receiving heat; A filter basket unit including a supply pipe, a chamber, a filter, and a thermally operated valve; and a coffee container portion containing the extract that has passed through the filter basket portion, wherein the supply pipe defines a flow path from the water filling portion to the chamber, and the chamber, together with the filter coupled to the upper portion, extracts ground beans. The thermally operated valve is coupled to the inner circumferential surface of the supply pipe to block the flow path defined in the supply pipe, and when the temperature of the thermally operated valve exceeds a set temperature during manufacture, the internal structure is changed to form a first flow path, , Water raised from the water filling unit may pass through the blocked portion through the first flow path.

In order to solve the above technical problem, a non-electric coffee extracting device driven at a set temperature according to an embodiment of the present invention is filled with water leaving a predetermined gas space and a water filling unit receiving heat; A filter basket unit including a supply pipe, a chamber, a filter, and a thermally operated valve; and a coffee container portion containing the extract that has passed through the filter basket portion, wherein the supply pipe defines a flow path from the water filling portion to the chamber, and the chamber, together with the filter coupled to the upper portion, extracts ground beans. When the temperature of the thermally operated valve exceeds the set temperature during manufacture, the internal structure is changed to form a first flow path, and the thermally operated valve closes the flow path defined in the supply pipe before reaching the set temperature. Although coupled to the inner circumferential surface of the supply pipe, a fine second flow path is formed compared to the first flow path so that a small amount of water can pass through, and the water rising from the water filling part can pass through the blocked part through the first flow path. there is.

In one embodiment of the present invention, the thermally movable valve includes a thermally movable unit containing a thermally expandable material therein; a piston shaft which is partially inserted into and coupled to the thermally movable part and generates a stroke by receiving the expansion pressure of the thermally expandable material; a shaft interlocking unit that comes in contact with one end of the piston shaft and interlocks its movement; a valve film fixedly coupled to the thermally movable part; and a membrane contact portion that is connected to the shaft coupling portion and separates from the valve membrane to form the first flow path when the stroke occurs while in contact with the valve membrane.

In one embodiment of the present invention, the thermally operated valve may include: elastic means; and a frame, wherein the frame is connected to the shaft linkage unit and coupled to one end of the elastic means at a lower end, and the other end of the elastic means is connected to the valve membrane to provide a restoring force.

In one embodiment of the present invention, the thermally operated valve further includes an O-ring, and the O-ring may be coupled to an outer surface of the thermally operated valve to be replaceable.

In one embodiment of the present invention, the shaft linkage portion may be formed with an insertion groove in which a portion of the piston shaft is inserted to guide the movement of the piston shaft.

The present invention has the effect of extracting coffee with a taste similar to or identical to that of espresso by extracting coffee under desired pressure and temperature conditions while employing the advantages of a conventional moka pot as it is.

The present invention can extract coffee at the desired temperature and pressure even in environments where electricity is not provided, such as mountains, seas, or remote areas, as long as there is a separate heat source, so that high-quality espresso-level coffee can be easily prepared anywhere and the taste and aroma of the coffee can be enjoyed. There are effects you can enjoy.

1 is a view showing a conventional moka pot.
Figure 2 shows a non-electric coffee extraction mechanism driven at a set temperature according to an embodiment of the present invention.
3 shows a filter basket part according to an embodiment of the present invention.
4 is a perspective view showing a thermally operated valve according to an embodiment of the present invention.
5 is an exploded view of a thermally operated valve according to an embodiment of the present invention.
Figure 6 shows the flow of water through the second flow path in the implementation of the non-electric coffee extraction device driven at the set temperature according to an embodiment of the present invention.
Figure 7 shows the flow of water through the second flow path in the practice of a non-electric coffee extraction device driven at a set temperature according to an embodiment of the present invention.
Figure 8 shows the flow of water through the first flow path in the implementation of the non-electric coffee extraction device driven at the set temperature according to an embodiment of the present invention.
Figure 9 shows the flow of water through the first flow path in the implementation of the non-electric coffee extraction device driven at the set temperature according to an embodiment of the present invention.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, it should be understood that this is not intended to limit the present invention to specific embodiments, and includes all transformations, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, a non-electric coffee extraction device (hereinafter, simply referred to as an 'extraction device') driven at a set temperature according to the present invention will be described in detail with reference to the accompanying drawings.

The heat supply unit 100 may use any type that can transfer heat to the water filling unit 200, such as a portable gas burner or an induction stove. However, it is preferable to use a heat transfer unit 100 capable of manually or electrically controlling the heat transfer temperature compared to using a heat supply unit 100 that continuously transfers excessively high heat.

As described above, the heat supply unit 100 can use an electric heating means, but is distinguished from the fact that the extraction device according to the present invention does not use electricity. When a non-electrical product is used as the heat supply unit 100, such as a gas burner, the present invention has the advantage of being able to be implemented even in an environment without electricity.

Referring to FIG. 2 , the extraction device 1 according to the present invention may include a water filling unit 200, a filter basket unit 300, and a coffee container unit 400.

The water filling unit 200 includes a filling container 210 and a safety valve 220.

The filling container 210 may be formed to have a certain volume so that water (W) can be filled therein. The longitudinal sectional area of the filling container 210 may be formed wider as it goes downward.

The size of the filling container 210 may be determined to include a space in which air pressure can be formed in addition to the amount of water for extracting coffee.

When the water (W) is heated, the gas inside the filling container 210 receives the heat and increases the pressure. In this case, the flow of the water W inside the filling container 210 may be discharged to the outside due to a pressure difference between the gas inside the filling container 210 and the external gas. The water (W) inside the filling container 210 passes through the supply pipe 320, the chamber 310, and the discharge passage 420 sequentially, and is provided with a force to come out through the discharge port 425. However, while the thermal operation valve 330 is closed, this flow may be partially restricted.

The top of the filling container 210 may be open. Water (W) may be filled from the top of the open filling container 210, the filter basket portion 300 may be inserted from the open top of the filling container 210 and coupled to the filling container (210).

A handle H may be connected to the outer surface of the filling container 210 .

The filling container 210 may be formed of a material such as stainless steel or aluminum to receive heat, but is not necessarily limited thereto. For example, the filling container 210 may be formed of a tempered glass material having durability due to heat. However, even in this case, it is preferable that the bottom surface for transferring heat is formed of a metal material. When the filling container 210 is transparent, the flow state of the water (W) can be observed.

The safety valve 220 may be coupled through one surface of the filling container 210 .

The safety valve 220 may be coupled to communicate with the inside of the filling container 210 in a closed state.

The safety valve 220 may be opened when a pressure higher than a certain level is received. Therefore, the safety valve 220 can prevent the filling container 210 from being damaged due to an excessively high internal pressure.

Depending on the embodiment, the safety valve 220 may be installed in a structure that is selectively opened and closed by a user's external force.

3 to 5 show the filter basket unit 300 and its sub-components in detail.

Referring to FIGS. 3 to 5 , the filter basket unit 300 may include a chamber 310 , a supply pipe 320 and a thermally operated valve 330 . The filter basket unit 300 may be detachably coupled to the filling container 210 and the coffee container unit 400, respectively. To this end, the components may include a structure for being screwed together (a screw thread and an inner structure corresponding thereto).

The chamber 310 may be formed in the shape of a pipe (PIPE) with open tops and bottoms. An upper portion of the chamber 310 may be open and a lower portion of the chamber 310 may be formed in a partially closed shape.

The lower part of the chamber 310 is formed with an inlet hole 311 of a size that allows water to pass through without leaking the ground beans (P/C), and the upper part is combined with the filter 313 to allow the passage of the ground beans (P/C). C) to form a closed space. Specifically, after supplying the pulverized beans (P/C) to the chamber 310, when the top is closed with the filter 313, the pulverized beans (P/C) do not move upwards or downwards.

Water passes through the lower surface of the chamber 310, and the coffee extract E may pass through the filter 313 disposed above the chamber 310. A plurality of inlet holes 311 communicating with the supply pipe 320 may be formed on the lower surface of the chamber 310 .

The material of the filter 313 and the size of the formed hole may be different from that of the inlet hole 311 . This is because the inlet hole 311 is simply for passing water (W), but the filter 313 is for passing coffee extract (E), and its technical purpose is different.

The chamber 310 may include a metal material having durability against corrosion, such as stainless steel or aluminum.

The supply pipe 320 may be formed to extend from the bottom of the chamber 310 to have a certain length. The supply pipe 320 may define a flow path from the bottom of the filling container 210 to the chamber 310 .

The upper part of the supply pipe 320 is connected to the lower surface of the chamber 310 and the lower part may communicate with the lower part of the filling container 210 . Accordingly, the lower end of the supply pipe 320 may be spaced apart from the lower surface of the filling container 210.

The thermally operated valve 330 may be coupled to the supply pipe 320 in contact with the inner diameter of the supply pipe 320 . The thermally movable valve 330 may be coupled with an interference fit. The interference fit may mean a coupling in a state where the O-ring 332 constituting the outermost part of the thermally movable valve 330 is compressed. In this case, the O-ring 332 may be formed with a diameter D1 equal to or larger than the inner diameter D2 of the supply pipe 320 .

If the size of the inner diameter (D2) of the supply pipe 320 is different in products of various sizes, it can be designed to be fitted by changing the size of the diameter (D1) of the O-ring 332. That is, it is possible to adapt to supply pipes 320 of various sizes only by replacing the O-ring 332 .

The thermally movable valve 330 may include a frame 331, an O-ring 332, a shaft coupling part 333, a thermally movable part 335, a piston shaft 336, a valve membrane 337, and an elastic means 338. can

The frame 331 forms the outer shape of the thermally movable valve 330 .

An upper portion of the frame 331 is connected to the shaft interlocking portion 333, and an O-ring 332 may be coupled to the outside. The O-ring 332 may include a material having elasticity such as rubber.

The shaft linkage part 333 is formed to come into contact with the upper end of the piston shaft 336 and can receive an upward pushing force from the piston shaft 336 .

The shaft coupling part 333 may be formed in an approximate arc shape, and an insertion groove 334 may be formed at a position corresponding to the piston shaft 336 . The insertion groove 334 is partially inserted into the upper end of the piston shaft 336 and can prevent the piston shaft 336 from being separated.

The thermally movable part 335 may be disposed inside the frame 331 along the longitudinal direction.

The thermally movable part 335 is coupled to the valve membrane 337 and coupled to the piston shaft 336 disposed in communication from the inside to the outside.

The thermally movable part 335 may include a thermal expansion material such as paraffin therein. The thermally expandable material is combined with the lower portion of the piston shaft 336 and is expanded by heat to raise the piston shaft 336 .

The temperature at which the piston shaft 336 operates may vary according to at least one of the type and amount of the thermally expandable material included in the thermally movable unit 335 . For example, when the temperature of the piston shaft 336 reaches 80° C. or higher, it receives a rapid expansion pressure and moves upward by a predetermined distance (stroke). For example, when the temperature of the piston shaft 336 reaches 93° C. or higher, it receives a rapid expansion pressure and moves up a predetermined distance (stroke). For example, when the temperature of the piston shaft 336 reaches 95° C. or higher, it receives a rapid expansion pressure and moves upward by a predetermined distance (stroke). The piston shaft 336 protrudes as much as Y2 and protrudes outward as much as Y1+Y2. At this time, the position difference between the lower end of the frame 331 and the lower end of the thermally movable part 335 is as much as Y2.

The thermally movable unit 335 may be operated based on various temperatures as in the above-described example. A set temperature at which the thermally movable unit 335 operates may be determined when the thermally movable unit 335 is manufactured. In fact, for products driven by heat, the operating temperature desired by the customer can be set as much as possible within a possible range, such as -5°C to 100°C, for example. That is, the thermally movable part 335 may be manufactured in response to a desired temperature (set temperature).

In addition, as described above, the thermally movable unit 335 is driven by a thermal factor and is a component capable of operating at a set temperature without using electricity.

The shaft linkage part 333 receives force by the stroke of the piston shaft 336, and the frame 331 and the O-ring 332 connected thereto may be raised relative to the thermally movable part 335. At this time, since contact between the valve membrane 337 coupled to the thermally movable unit 335 and the membrane contact portion 339 is released, the thermally movable valve 330 is in an open state. When the thermally movable valve 330 is in an open state, a first flow path 331a is formed. At this time, the elastic means 338 is in a compressed state, which is the result of the valve film 337 shortening the distance between the lower end of the frame 331 by Y2.

The valve film 337 may be fixed and coupled to the thermally movable part 335 .

The valve film 337 may be formed in a substantially donut shape, and the thermally operable valve 330 may be closed or opened by contacting the film contact portion 339 or by keeping a distance from the film contact portion 339 .

In the valve membrane 337 , at least one second passage 337a penetrating the valve membrane 337 may be formed. The second flow passage 337a provides a fine passage even before the thermal operation valve 330 is opened, so that the water filling part 200 from the supply pipe 320 is not completely closed.

The elastic means 338 has an upper end connected to the lower portion of the valve membrane 337 and a lower end connected to the lower end of the frame 331 to provide restoring force to both.

The elastic means 338 may include a spring, but is not necessarily limited thereto, and any means capable of providing a restoring force may be employed.

The elastic means 338 is in a state of equilibrium when the piston shaft 336 is not raised, and is compressed when the piston is raised. The elastic means 338 provides restoring force in the opposite direction so that the descending piston shaft 336 can continuously face the shaft interlocking unit 330 when the temperature of the thermally movable unit 335 is below the set temperature, thereby providing a state before heating. to be able to return to

Referring back to FIG. 2 , the coffee container unit 400 may include a coffee container 410 and a discharge pipe 420 .

The coffee container 410 may be formed of stainless steel or aluminum, but is not necessarily limited thereto. For example, the coffee container 410 may be formed of a tempered glass material having durability by heat. When the coffee container 410 is transparent, the flow state of the water W can be observed.

The lower portion of the coffee container 410 may be detachably coupled to the upper portion of the chamber 310 . At this time, a gasket (not shown) may be disposed and coupled between the filter 313 and the lower portion of the coffee container 410 to improve airtightness.

The lower part of the coffee container 410 is defined as a short height of the space corresponding to the area of the filter 313, and a discharge pipe 420 may be formed in the center.

The discharge pipe 420 may define a flow path through which the extraction liquid E that has passed through the filter 313 is discharged.

The inner space of the coffee container 410 may be partitioned by the lower part of the coffee container 410 and the discharge pipe 420 connected thereto. Hereinafter, 'inside' of the coffee container 410 will be expressed as excluding the inner space partitioned by the discharge pipe 420 from the inner space of the coffee container 410 .

The extract (E) rises along the path defined by the discharge pipe 420 and is discharged into the coffee container 410 through the discharge port 425.

The position of the outlet 425 may be formed higher than the maximum height of the extract liquid E filled in the coffee container 410 .

A shade 421 may be formed at an upper portion of the discharge pipe 420 so that the extract E is guided to a lower portion of the coffee container 410 .

Hereinafter, the method of use and operation of the extraction mechanism 1 according to the present invention will be described in detail with reference to the accompanying drawings. Prior to the description, it is assumed that the water filling part 200, the filter basket part 300, and the coffee container member 400 are coupled to each other to maintain airtightness, and the water filling part 200 contains water (W). A state in which the chamber 310 is filled with ground beans (P/C) will be described as a starting point.

As shown in FIG. 2 , when the water filling part 200 containing water W is placed on the heat supply part 100 and heated, the temperature of the air inside the water filling part 200 rises. According to the thermodynamic law (PV=nRT), since the pressure increase is proportional to the temperature rise, the pressure by the air inside the water filling unit 200 rises and pushes the water W toward the supply pipe 320.

The water (W) rises along the inside of the supply pipe 320 and rises to the vicinity of the thermally operable valve 330 to transfer heat to the thermally operable valve 330 . Here, the movement of the water W is not completely restricted, and a part of the water W may flow into the small amount chamber 310 through the second flow path 337a (see FIGS. 6 and 7 ).

The water (W) introduced into the chamber 310 makes the ground beans (P/C) moist with hot moisture. This condition is similar to when making drip coffee, soaking the whole ground beans (P/C) in water and steaming for about 30 seconds.

Ground beans (P / C) can be an advantageous condition for extracting coffee, such as widening the distance between the ground particles in a state of soaking in warm water.

Meanwhile, despite some water (W) flowing into the chamber 310, the air pressure inside the water filling unit 200 gradually increases. This is because the amount of flowed water is not sufficient to offset the atmospheric pressure caused by the temperature rise.

The air pressure inside the water filling unit 200 rises until the thermal operation valve 330 is opened and the first flow path 331a is formed. At this time, the maximum air pressure may be determined by determining a volume excluding water (W) to be filled in the water filling unit 200 . That is, the water filling part 200 can be designed by determining the remaining volume (the volume of the space excluding water) of the water filling part 200 as the desired maximum air pressure increases. This design considers the law of thermodynamics (PV=nRT), where volume is inversely proportional to pressure.

If possible, the maximum pressure can be designed as close to 9 bar. According to another embodiment, the maximum pressure may be set higher than 9 bar. This is in consideration of the fact that the gas volume inside the water filling unit 200 rises and the pressure gradually decreases as the filled water W rises, and this is to bring the average pressure close to 9 bar during the extraction process.

The thermal operation valve 330 is opened when the set temperature is reached to form the first flow path 331a (see FIGS. 8 and 9). The set temperature of the thermally movable valve 330 is preferably 93°C. Meanwhile, the set temperature at which the thermally movable valve 330 is opened may be set lower than 93°C. Since it may take time for the water (W) and the thermal valve 330 to reach thermal equilibrium, the thermal valve 330 can be designed to open at a lower temperature when the water (W) reaches 93 ° C. because there is

When the thermal operation valve 330 is opened and the first flow path 331a is defined, the water W rapidly rises due to the pressure of the gas inside the water filling unit 200 .

Water (W) forms an extract liquid while passing through a filter filled with ground coffee beans (P/C), and the extract liquid may rise along a flow path defined by the discharge pipe 420 and be discharged through the discharge port 425 .

When coffee extraction is completed, the heat supply unit 100 is not operated so that the temperature is naturally cooled. The opened first flow passage 331a is closed as the thermal operation valve 330 cools down. In this process, the elastic means 338 assists the valve membrane 337 and the membrane contact portion 339 to be completely closed by mutual pressure through their restoring force.

According to the above usage method, the user can pour out the extract E from the coffee container 410 and enjoy it.

According to an embodiment of the present invention, the coffee extract (E) can taste the same as or very close to espresso.

The present invention adopts the advantages of the moka pot as it is, and determines the extraction temperature by including the thermal operation valve 330 and determines the maximum pressure by determining the volume inside the water filling unit 200, so that the extraction conditions are the same as those of commercial espresso. or have the effect of providing very similar conditions.

In addition, the present invention has an effect of providing a more delicious coffee extract (E) by providing a configuration in which the ground beans (P / C) are wetted and steamed before extraction through the second flow path (337a).

In addition, the present invention can extract coffee at a desired temperature and pressure without using electricity. Of course, the temperature and pressure mostly depend on the structure and material of the water filling unit 200 and the thermally movable unit 335 designed during manufacturing. When extracting coffee at a different set temperature, the thermally movable valve 330 including the thermally movable part 335 driven at a different temperature can be replaced.

As a result, the present invention has the effect that coffee of the same quality as or close to that of espresso extracted at a set temperature and pressure can be provided even in a place without electricity as long as a heat supply means, ground coffee, and water such as a gas burner are provided.

According to another embodiment of the present invention, the extraction device 1 may further include another reverse heat operation valve (not shown) disposed inside the supply pipe 320 . The reverse heat actuated valve is substantially the same as the heat actuated valve, but is designed to be opened below the set temperature and closed above the set temperature. This can be achieved by disposing the valve membrane and the membrane contact portion in a state where they are separated from each other when the temperature is lower than the set temperature, and designing the valve membrane to face the membrane contact portion by the stroke of the thermally movable unit. For example, a reverse heat actuated valve may be determined to close at 95°C. For example, a reverse heat operated valve may be determined to close at a temperature slightly below 95°C (so that it opens when the water is at 95°C).

According to another embodiment of the present invention, conditions in which coffee can be extracted in a set temperature range (eg, 93 ° C. or more and 95 ° C. or less) are provided. When coffee stops being extracted, the user can control coffee to be extracted again within the set temperature range by stopping the heat supply unit 100 .

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

100: heat study
200: water filling unit
210: filling container
220: safety valve
300: filter basket part
310: chamber
311: inlet hole
313: filter
320: supply pipe
330: thermally operated valve
331: frame
331a: first euro
337a: second flow
332: O-ring
333: shaft linkage
334: insertion groove
335: thermally movable unit
336: piston shaft
337 valve membrane
338 elastic means
339 membrane contact
400: coffee container
410: coffee container
420: discharge pipe
425: outlet
430: extraction filter
E: Extract
H: handle
P/C: ground beans
W: water

Claims (6)

a water filling unit filled with water leaving a predetermined gas space and receiving heat;
A filter basket unit including a supply pipe, a chamber, a filter, and a thermally operated valve; and
Including; coffee container portion containing the extract that has passed through the filter basket portion,
The supply pipe defines a flow path from the water filling part to the chamber,
The chamber defines a space in which ground beans are extracted together with the filter coupled thereto,
The thermally operated valve is coupled to an inner circumferential surface of the supply pipe to block a flow path defined in the supply pipe,
When the temperature of the thermally operated valve is higher than the temperature set during manufacture, the internal structure is changed to form a first flow path, and the water rising from the water filling part passes through the blocked part through the first flow path. Non-electrical coffee brewing equipment driven at temperature.
a water filling unit filled with water leaving a predetermined gas space and receiving heat;
A filter basket unit including a supply pipe, a chamber, a filter, and a thermally operated valve; and
Including; coffee container portion containing the extract that has passed through the filter basket portion,
The supply pipe defines a flow path from the water filling part to the chamber,
The chamber defines a space in which ground beans are extracted together with the filter coupled thereto,
When the temperature of the thermally operated valve exceeds the set temperature during manufacture, the internal structure is changed to form a first flow path,
The thermally operated valve is coupled to the inner circumferential surface of the supply pipe to block the flow path defined in the supply pipe before reaching the set temperature, but a fine second flow path is formed compared to the first flow path so that a small amount of water passes,
The non-electric coffee extraction mechanism driven at the set temperature, characterized in that the water raised from the water filling portion passes through the blocked portion through the first flow path.
According to claim 1 or 2,
The thermal operation valve,
A thermally movable unit containing a thermally expandable material therein;
a piston shaft which is partially inserted into and coupled to the thermally movable part and generates a stroke by receiving the expansion pressure of the thermally expandable material;
a shaft interlocking unit that comes into contact with one end of the piston shaft and interlocks its movement;
a valve film fixedly coupled to the thermally movable part; and
A non-electric coffee driven at a set temperature, characterized in that it comprises a; membrane contact portion connected to the shaft linkage and separated from the valve membrane to form the first flow path when the stroke occurs in a state in contact with the valve membrane. extractor.
According to claim 3,
The thermal operation valve,
elastic means; And a frame; further comprising,
The frame is connected to the shaft linkage and is coupled to one end of the elastic means at the lower end,
The other end of the elastic means is driven at a set temperature, characterized in that connected to the valve film to provide a restoring force.
According to claim 3,
The thermal operation valve,
It further includes an O-ring;
The O-ring is a non-electric coffee brewing device driven at a set temperature, characterized in that replaceably coupled to the outer surface of the thermally operated valve.
According to claim 3,
The shaft linkage part,
A non-electric coffee extraction device driven at a set temperature, characterized in that a portion of the piston shaft is inserted to form an insertion groove through which the movement of the piston shaft is guided.

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