KR101703818B1 - Hand espresso machine - Google Patents

Abstract

According to the present invention, disclosed is a hand espresso machine enabling extraction of espresso while uniformly spraying water under a high and uniform pressure, enabling extraction of the espresso while adjusting the pressure according to a user preference, and having a simple structure to facilitate washing and repair. The hand espresso machine comprises: a water tank receiving water for espresso extraction therein; a cylinder detachably coupled to a lower part of the water tank; a piston unit installed inside the cylinder to be slidably moving in a vertical direction along the cylinder, and allowing the water stored in the water tank to flow in a cylinder direction while preventing the water located in a lower part from being lifted towards the water tank even if the piston unit is lifted down by sliding along the cylinder; a portafilter detachably connected to the lower part of the cylinder so as to be located under the piston unit, and receiving ground coffee beans therein; and a pair of lever units rotatably installed to the water tank and rotatably connected to the piston, and pushing down the piston unit towards the portafilter with high pressure by the principle of levers to pressurize the water between the piston unit and the portafilter to a high pressure such that the water passes through the portafilter in which the ground coffee beans is received, and thereby the espresso is extracted.

Description

Hand espresso machine {HAND ESPRESSO MACHINE}

The present invention relates to a hand espresso machine, and more particularly, to a hand espresso machine capable of extracting espresso while the user is carrying and using electricity.

In general, espresso refers to coffee extracted by a machine, and more specifically, coffee ground liquid extracted at a high pressure of about 9 atm using 7 to 10 g of ground coffee and a small amount of water of about 20 to 40 ml.

The espresso machine for extracting such espresso coffee comprises a filter for extracting coffee by receiving the ground coffee beans, a boiler for supplying hot water, and a pump for supplying hot water to the coffee beans, Espresso machines have been developed in various forms for use in coffee shops, companies and homes.

For example, in the case of the above espresso machine, roasted coffee beans are crushed and placed in a conical filter, then ground coffee beans are placed on a filter using an extractor called coffee drip, water is poured, And the heating means is operated to heat the water. When the heated water becomes high on the coffee, the espresso is extracted and the espresso is discharged downward due to the effect of gravity And a device for extracting the liquid is mainly used.

Recently, as the base of coffee culture has been expanded, the desire for users to extract and drink espresso coffee regardless of place and time has been increased, so that a hand espresso machine capable of extracting espresso while carrying with the user has been popular to be.

On the other hand, in the case of the espresso coffee, the taste and quality of the espresso coffee can be determined not only by the kind of the coffee beans, the degree of roasting the coffee beans, the size of the ground coffee beans, and the like. The taste and quality of the espresso coffee are also determined by the pressure and the temperature of the water. That is, in the case of espresso, the taste and quality of coffee are evaluated to be the best when extracted at a pressure of 9.2 atm. However, in the case of conventional portable espresso machines, the pressure for extracting espresso is generally as low as 8 atm, The espresso can not be extracted at once, the pressure for extracting espresso can not be adjusted according to the user's taste, and the taste and quality of the coffee are somewhat deteriorated because the water is not uniformly sprayed.

In addition, the conventional hand espresso machine is complicated in structure and requires a high manufacturing cost, which makes it difficult for a consumer to reach a shop due to a high selling price, and it is not easy to clean and repair.

Korean Patent Laid-Open Publication No. 2014-0053555 (Aug. 2014.)

It is an object of the present invention to provide a hand espresso machine capable of extracting espresso while spraying water evenly under a high and uniform pressure and extracting espresso while adjusting extraction pressure according to a user's taste.

Another problem to be solved by the present invention is to provide a hand espresso machine which is very simple in structure and which can greatly reduce manufacturing costs and is easy to clean and repair.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

In order to accomplish the above object, the present invention provides a water purifying apparatus for an espresso, comprising: a water reservoir for containing water to be extracted therein; a cylinder coupled to a lower portion of the water receptacle so as to be detachable from the water receptacle; A piston unit disposed at a lower portion of the piston so as to allow water contained in the water tank to flow downward in a cylinder direction and slid down along the cylinder so as to prevent water located at a lower portion from rising in a water bottle direction; A pita filter which is detachably connected to a lower portion of the cylinder and into which pulverized beans are inserted, and a pita filter which is rotatably installed in the pail and which is rotatably connected to the piston, Piston push down to high pressure Is pressed in the units and Porta a high pressure water between the filter presents a hand espresso machine comprising a pair of lever unit to extract espresso by having passed through the Porta filter with said grinding coffee beans are inserted.

For example, the piston unit has a piston main body portion disposed inside the cylinder so as to be able to slide up and down along the cylinder, and water contained in the water can easily flow downward in the downward direction of the piston main body portion, The water located in the lower portion may include a plurality of check valves installed on the piston body portion to prevent the water from rising upward in the piston body portion even if a high pressure is applied by the piston body portion.

In addition, the present invention may further comprise a shower screen disposed above the porter filter so that water pressurized by the piston unit at a high pressure can be uniformly injected into the pulverized beans inserted into the porter filter.

For example, the lever unit includes a handle portion rotatably connected to the water bottle, a link connecting portion protruding from the handle portion to be positioned inside the water bottle, and a link connecting portion rotatably connected to the link connecting portion and the piston unit And a link portion that transmits the rotational force of the handle portion, which is rotated around the water bottle, to the piston unit in a vertical direction to thereby raise or lower the piston unit.

In addition, the present invention may further include a tumbler detachably coupled to the lower portion of the porcelain filter so as to receive the espresso extracted through the porcelain filter.

As described above, in the hand espresso machine according to an embodiment of the present invention, when the user grips the pair of knobs of the lever unit with both hands, the pair of knobs is rotated So that the user can pressurize the heated water in the cylinder, so that the user can extract the espresso easily under a high and uniform pressure even if the user uses a small force, so that the espresso having good taste and quality can be extracted.

In addition, the heated water, which is uniformly pressurized through the piston unit and is pressurized at a high pressure, is uniformly sprayed on the pulverized beans contained in the potato filter through the shower screen, thereby extracting espresso having better taste and quality .

The user can control the pressure of the heated water in the cylinder by controlling the force and the speed for rotating the handle, thereby extracting espresso such as drip coffee suitable for the user's taste It is effective.

In addition, the hand espresso machine according to the embodiment of the present invention has a very simple structure and is manufactured so that a water bottle, a cylinder, a tumbler, a piston unit, a basket, have.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a perspective view of a hand espresso machine according to an embodiment of the present invention;
2 is a view for explaining an internal structure of a hand espresso machine according to an embodiment of the present invention;
Fig. 3 is another drawing for explaining the internal structure of a hand espresso machine according to an embodiment of the present invention

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 1 is a perspective view of a hand espresso machine according to an embodiment of the present invention, FIG. 2 is a view for explaining an internal structure of a hand espresso machine according to an embodiment of the present invention, and FIG. Fig. 5 is another drawing for explaining the internal structure of the hand espresso machine according to the example. Fig.

1 to 3, a hand espresso machine 100 according to an embodiment of the present invention includes a water bottle 110, a cylinder 120, a piston unit 130, a potafilter 140, The lever unit 150 of FIG.

The water tank 110 can receive water for extracting espresso therein.

For example, the water bottle 110 can be manufactured in a capacity of 90 ml which can extract about two cups of espresso. The water bottle 110 is made of a transparent material so that the capacity of the water can be easily measured, And a water inlet 111 capable of opening and closing can be formed at the upper end of the water bottle.

The cylinder 120 may be coupled to a lower portion of the water bottle 110 to be detachable from the water bottle 110.

The piston unit 130 may be disposed inside the cylinder 120 so as to be slidable upward and downward along the cylinder 120. The piston unit 130 slides along the cylinder 120 and descends so that the water contained in the water bottle 110 flows down easily in the direction of the cylinder 120 The water located in the lower portion of the piston unit 130 can not be raised in the direction of the water bottle 110, that is, the upper direction of the piston unit 130. [

For example, the piston unit 130 may include a piston body 131, a check valve 132, and a cylinder seal 133.

The piston main body 131 may be disposed inside the cylinder 120 so as to be slidable upward and downward along the cylinder 120.

The check valve 132 allows the water contained in the water bottle 110 to be easily flowed downward to the piston main body 131 and the water located below the piston main body 131 flows into the piston main body 131 May be slid along the cylinder 120 to be lowered so that a plurality of the piston body 131 may not be raised in the upward direction of the piston body 131 even if a high pressure is applied thereto. Preferably, four piston body portions 131 are provided.

For example, the check valve 132 may be a ball check valve, an umbrella check valve, a silicone check valve, a duckbill valve, an o-ring check valve O-ring check valve, or the like may be selected and used.

Meanwhile, in the hand espresso machine 100 according to the embodiment of the present invention, as shown in the figure, a plurality of ball insertion holes 132a are formed in the upper surface direction from the lower surface of the piston main body 131, A water insertion hole 132b is formed to extend from the ball insertion hole 132a to the upper surface and a ball 132c is inserted into the ball insertion hole 132a so that water is supplied to the upper portion of the piston main body 131 The ball 132c inserted into the ball insertion hole 132a is spaced apart from the water insertion hole 132b so that the water located in the upper portion of the piston main body 131 flows into the water insertion hole 132b and the water insertion hole 132b, Through the ball insertion hole 132a and flows down to the lower portion of the piston main body portion 131. After the water flows down to the lower portion of the piston main body portion 131, the piston main body portion 131 is lowered The water located below the piston main body 131 The ball inserted into the ball insertion hole 132a is brought into close contact with the water insertion hole 132b to close the water insertion hole 132b so that the piston main body 131 is lowered, The water located in the lower portion of the piston main body 131 does not flow back toward the upper portion of the piston main body 131 through the water insertion hole 132b even if the water located under the piston main body 131 is pressurized with a high pressure.

The cylinder seal 133 is installed on the outer circumferential surface of the piston main body 131 so that water can be sealed between the piston main body 131 and the cylinder 120.

The porta filter 140 may be detachably connected to the lower portion of the cylinder 120 so as to be positioned below the piston unit 130. The powdered filter 140 may be filled with pulverized beans.

The pair of lever units 150 is rotatably installed in the water bottle 110 and is rotatably connected to the piston unit 130 so that the piston unit 130 can be rotated in the direction of the potato filter 140 So that water in the space between the piston unit 130 and the pota filter 140 is pressurized to a high pressure so as to pass through the pota filter 140 into which the pulverized beans are inserted so that the espresso can be extracted .

For example, the lever unit 150 may include a handle 151, a link connector 152, and a link 153.

The handle 151 may be hingedly connected to the water container 110 so as to be rotatable. Here, the handle 151 may be hinged so that the end of the handle 151 is rotatable about the center of the upper end of the water container 110.

The gear portion 151a is formed on the pair of grip portions 151 facing each other to be engaged with each other so that the pair of lever units 150 are operated in cooperation with each other, 151).

The link connection part 152 may protrude from the end of the handle 151 so as to be positioned inside the water bottle 110.

The link unit 153 is rotatably coupled to the link unit 152 and the piston unit 130 so that the rotational force of the handle 151 rotated about the water bottle 110 is transmitted to the piston unit 130 So that the piston unit 130 can be raised or lowered.

The hand espresso machine 100 according to an embodiment of the present invention may further include a shower screen 160.

The shower screen 160 may be disposed above the porcelain filter 140 so that the shower screen 160 may be uniformly injected into the ground beans inserted into the porcelain filter 140 that is pressurized with high pressure by the piston unit 130 .

In addition, the hand espresso machine 100 according to an embodiment of the present invention may further include a tumbler 170.

The tumbler 170 may be detachably coupled to the lower portion of the porcelain filter 140 so that espresso extracted through the porcelain filter 140 can be received.

Referring to FIGS. 1 to 3, a process of extracting espresso using the hand espresso machine 100 according to an embodiment of the present invention and an operation effect will be described.

Referring to FIGS. 1 to 3, in order to extract espresso using the hand espresso machine 100 according to an embodiment of the present invention, the potato filter 140 is filled with pulverized beans before damping.

Thereafter, the porcelain filter 140 is coupled to the cylinder 120, and then the heated water is filled into the water bottle 110 through the water inlet 111.

When the water in the bucket 110 is filled with heated water, the handle 151 of the pair of lever units 150 is rotated in the direction of the arrow A to be slowly lifted.

2, when the handle 151 of the lever unit 150 is rotated in the direction of arrow A and slowly lifted up, the link connection part 152 is also rotated in the direction of the arrow A by interlocking with the handle 151 And the link unit 153 is pulled up by the link connection unit 152 as the link unit 152 is rotated in the direction of arrow A so that the piston unit 130 is interlocked with the link unit 153 And is raised in the direction of the water tub 110.

When the piston unit 130 moves upward in the direction of the water bottle 110, the air pressure at the lower portion of the piston unit 130 becomes lower than the air pressure at the upper portion of the piston unit 130, The ball 132c is lowered and separated from the water insertion hole 132b so that the water filled in the water container 110 sequentially passes through the water insertion hole 132b and the ball insertion hole 132a, And injected into the cylinder 120.

When the handle 151 of the lever unit 150 is rotated in the direction of arrow B as shown in FIG. 3 after a predetermined time after the heated water is injected into the cylinder 120, The link unit 152 is also rotated in the direction of arrow B so that the link unit 153 is lowered by the link connection unit 152 to lower the piston unit 130 along the cylinder 120 The heated water injected into the cylinder 120 is pressurized by the piston unit 130 to a high pressure.

When the piston unit 130 is lowered and the heated water injected into the cylinder 120 is pressurized to a high pressure, the heated water passes through the shower screen 160 while the porcelain filter 140 is filled, The espresso is extracted while being passed through the porcelain filter 140 and collected in the tumbler 170 coupled to the lower part of the porcelain filter 140.

At this time, by adjusting the force and speed for rotating the handle 151, the user adjusts the pressure of the heated water introduced into the cylinder 120 to be pressed by the piston unit 130, Allow espresso to be extracted.

The lever unit 150 includes a pair of knobs 151 and a pair of knobs 151. The lever unit 150 includes a pair of knobs 151, The user can press the heated water in the lower portion of the piston unit 130, that is, the cylinder 120, by rotating the piston unit 151 to extract espresso easily under a high and uniform pressure even if the user uses a small force, And espresso of good quality can be extracted.

In addition, the knobs 151 facing each other are gear-connected to each other by the gear portion 151a so that the pair of lever units 150 can be operated in cooperation with each other, Allow espresso to be extracted with pressure.

Further, the heated water, which is uniformly pressurized at a high pressure through the piston unit 130, is uniformly sprayed to the pulverized beans contained in the porcelain filter 140 through the shower screen 160, There is an advantage of extracting espresso.

In addition, the hand espresso machine 100 according to an embodiment of the present invention is very simple in structure and has a structure in which the water bottle 110, the cylinder 120, the tumbler 170, the piston unit 130, All of which are detachably coupled to each other, thereby being very easy to clean and repair.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

(110): a water bottle (120): a cylinder
(130): Piston unit (140): Pota filter
(150): lever unit (160): shower screen
(170): Tumbler

Claims (5)

A water tank in which water to be extracted is extracted;
A cylinder coupled to a lower portion of the water bottle to be detachable from the water bottle;
The water contained in the water tank flows downward in the cylinder direction so as to be able to slide up and down along the cylinder so as to be slidable upward and downward, A piston unit for preventing the piston unit from moving;
A porta filter detachably connected to a lower portion of the cylinder so as to be positioned below the piston and having a pulverized bean inserted therein; And
The piston unit is rotatably installed in the water bottle and is rotatably connected to the piston so that the piston unit is pushed to a high pressure in the direction of the potato filter by the principle of the lever, and the water between the piston unit and the potato filter is pressurized to a high pressure, And a pair of lever units for allowing espresso to be extracted by allowing the coffee beans to pass through a potter filter having inserted beans therein, the hand espresso machine comprising:
Wherein the piston unit includes a piston body portion disposed inside the cylinder so as to be slidable upward and downward along the cylinder, and a plurality of ball insertion holes formed in a direction from an upper surface to a lower surface of the piston body portion, A water insertion hole is formed through the upper surface of the piston main body to allow water contained in the water receptacle to flow downward in a downward direction of the piston main body by inserting a ball into the ball insertion hole, And a plurality of check valves installed on the piston main body to prevent the piston main body from rising upward even if a high pressure is applied by the piston main body,
The lever unit includes a handle portion rotatably connected to the water bottle, a link connecting portion protruding from the handle portion to be positioned inside the water bottle, and a connecting portion rotatably connected to the link connecting portion and the piston unit, And a link portion that transmits the rotational force of the handle portion, which is rotated to the center, to the piston unit in a vertical direction to thereby raise or lower the piston unit,
Wherein the water bottle, the cylinder, the piston unit, and the potter filter are made detachably mountable. delete The method according to claim 1,
Further comprising a shower screen disposed at an upper portion of the potter filter so that water pressurized by the piston unit at a high pressure can be uniformly sprayed to the pulverized beans inserted into the potter filter. delete The method according to claim 1,
Further comprising a tumbler detachably coupled to a lower portion of the potter filter so that espresso extracted through the potter filter can be received.

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