TW202100080A - Improved structure of filter cup to improve the phenomenon that the ground coffee powders are extracted non-uniformly, enable the flow rate when the coffee is filtered to be more stable, and make the difference of tastes of coffees extracted every time not so obvious - Google Patents

Abstract

Provided is an improved structure of a filter cup. The improved structure is matched up with a filter paper to use and may be placed on a containing cup for filtering and extracting a brewing matter into the containing cup. The improved structure of the filter cup of this invention is formed by integrally forming a cup body, a cup seat and a groove structure. Therefore, the filter paper may be tightly attached to the surface of the filter cup by virtue of equidistant radial arrangement of grooves with one being long and the other one being short during brewing. The grooves for exhausting air are capable of uniformly exhausting the air, so that air in ground coffee powders may be successfully exhausted, so as to improve the phenomenon that the ground coffee powders are extracted non-uniformly, enable the flow rate when the coffee is filtered to be more stable, and make the difference of tastes of coffees extracted every time not so obvious, thereby achieving making coffee brewed by every person have same quality and enabling coffee with stable quality to be still generated even after continuously brewing several cups. In addition, by using the structure of the filter cup, raw materials may be effectively saved.

Description

Improved structure of filter bowl

The present invention relates to an improved structure of a filter cup, in particular to a filter cup with full grooves and semi-grooves, and especially refers to the smooth expulsion of the air in the coffee powder to improve the uneven extraction of the coffee powder By.

For most people, coffee has become an indispensable part of life. In addition to refreshing, coffee has many health benefits, such as reducing muscle fatigue, promoting digestive juice secretion, and protecting Heart etc. In order to brew coffee that meets personal preferences, a simple method of brewing coffee by hand has become an entry choice for many consumers. The method of hand brewing coffee is mainly to set filter paper on the filter cup, and place the coffee powder in the filter paper. The brewer slowly pours hot water into different positions of the filter cup so that the coffee powder in different positions on the filter cup can be evenly covered. The hot water contacts to extract the oil and aromatic substances in the coffee, and then slowly flow out the coffee liquid of coffee flavor. The above-mentioned coffee for 1 to 2 people takes about 2 to 3 minutes to make the coffee. The operation is simple, convenient and fast, and it is very suitable for office or home use. The coffee extracted from the filtered coffee powder and water has a mellow taste. Although there are many factors that affect the quality of coffee brewing, including the quality of coffee beans, the time of filtering and steeping, the brewing temperature, etc., the time of filtering and steeping can be directly controlled by the brewer. In other words, the filter cup required to filter coffee powder is the main factor affecting the flow rate and smoothness of coffee powder filtration . The structure of the conventional filter cup is a cup with several half-groove channels of equal length and a filter hole. A filter paper is placed in the filter cup, and the coffee powder is placed on the filter paper, and the coffee is steeped on the filter paper by adding water The powder flows into the drinking cup or brewing pot through the filter hole. However, the combination of the equal-length and half-groove flow channel design on the cup surface of the traditional filter cup with the filter paper, although the rib structure of the outer convex is improved to a concave structure, the filter paper can be easily attached to the cup body after being exposed to water On the side and the half-groove runners, the effect cannot be sustained, and it needs to be added according to the special watering method of the master. When it is continuously brewed for several cups, the coffee quality and extraction rate will appear unstable, resulting in brewing. The quality of coffee varies, increasing the consumption of raw materials. In view of this, how to improve the structure of the filter cup to make the flow rate of the coffee filter more stable and fit the filter paper better, without the need for special water addition methods by the master, so that everyone can brew the same coffee quality and continuous After brewing a few cups, coffee of stable quality can still be produced, the extraction rate is improved, and the effective saving of raw materials is an urgent issue facing the industry.

The main purpose of the present invention is to overcome the above-mentioned problems encountered by the prior art and to provide a filter paper that can be arranged between the filter paper and the surface of the filter cup through an equal-spaced radial arrangement of long and short grooves during brewing. The fitting can be tightly fitted, and the exhaust grooves can be uniformly exhausted, so that the air in the coffee powder can be smoothly discharged out, which can improve the phenomenon of local extraction of coffee powder and make the flow rate of coffee filtration more stable. The difference in the taste of each coffee extraction is less significant, so as to achieve the same quality of coffee brewed by everyone. Even after several cups of continuous brewing, coffee of stable quality can be produced, which improves the extraction rate and is effective Improved structure of filter bowl that saves raw materials. To achieve the above purpose, the present invention is an improved structure of a filter cup, which is used with filter paper and can be placed on a container for filtering and extracting a brewing substance in the container. The filter cup is improved The structure includes: a cup body, including a cup mouth, a filter hole opposite to the cup mouth, a housing space formed between the cup mouth and the filter hole, and a cup surface surrounding the housing space; a cup seat, forming At the bottom of the cup body, the cup holder includes a bottom surface and a positioning platform extending from the bottom surface. The positioning platform is formed with the filter hole; and a groove structure consisting of several long grooves and several short grooves. The grooves are arranged radially on the cup surface with a long and short equidistant intervals. Each of the long and short grooves is recessed from the cup surface. Each includes a drainage part and an introduction part. The introduction part is larger than the The drainage part is close to the cup seat and directly connected to the filter hole, and the drainage part of each long groove extends from one end of the cup mouth to the introduction part, and the width of the drainage part of each short groove is from close to the cup One end of the mouth gradually expands in diameter to extend to the introduction part. In the above-mentioned embodiment of the present invention, the depth of the drainage part of each short groove gradually increases from the end close to the cup mouth to the introduction part. In the above embodiment of the present invention, the introduction part of each long and short groove is bent downward from the end of the drainage part near the cup holder to the filter hole, so that the bottom end of the filter paper is placed in the containing space It will not touch the surrounding of the filter hole. In the above embodiment of the present invention, the drainage part of each short groove is spaced a distance from the cup opening. In the above embodiment of the present invention, the length of each short groove is 28-42 mm. In the above embodiment of the present invention, the width of the drainage part of each long groove extends from the end close to the cup mouth to the introduction part. In the above embodiment of the present invention, the width of each long groove is 5.1-7.7 mm. In the above-mentioned embodiment of the present invention, the bottom surface of the cup holder further has a plurality of stoppers, which are arranged at equal intervals and radially arranged on the bottom surface for embedding on the container. In the above-mentioned embodiment of the present invention, the introduction part of each long and short groove forms a U-shaped curved surface at the filter hole, so that the filter hole has a contour composed of a continuous curved surface. In the above-mentioned embodiment of the present invention, the drainage part of each long groove forms a U-shaped curved surface at the cup opening, so that the cup opening has a contour formed by a spaced curved surface. In the above embodiment of the present invention, the number of the plurality of long and short grooves is 3-5 each. In the above embodiment of the present invention, the improved structure of the filter cup can be made of wood, porcelain, plastic, white Made of porcelain, bone china, stainless steel, silicon rubber, glass, pottery, copper or stone materials. In the above embodiment of the present invention, the ratio of the length of the short groove to the long groove is 0.3-0.5. In the above embodiment of the present invention, the diameter of the cup holder is 80-120 mm. In the above embodiment of the present invention, the diameter of the cup mouth is 74-111 mm. In the above embodiment of the present invention, each short groove has a width of 5.1-7.7 mm at the widest part. In the above embodiment of the present invention, the total length from the cup body to the cup base is 60-90 mm. In the above-mentioned embodiment of the present invention, the outer circumference of the cup body is formed in a relatively convex shape corresponding to the position of each long and short groove.

Please refer to "Figures 1-7", which are the three-dimensional schematic view of the improved structure of the filter cup of the present invention, the isometric view of the improved structure of the filter cup of the present invention, the top view of the improved structure of the filter cup of the present invention, and the present invention. The schematic side view of the improved structure of the filter cup, the bottom schematic view of the improved structure of the filter cup of the present invention, the AA cross-sectional view showing Figure 4, and the schematic view of the use state of one of the improved structures of the filter cup of the present invention. As shown in the figure: the present invention is an improved structure 1 of a filter cup, which is used with filter paper and can be placed on a container 2 for filtering and extracting a brewed substance in the container 2. The foam is preferably coffee powder, but it is not limited to this. The improved structure 1 of the filter cup of the present invention includes a cup body 10, a cup seat 20, and a groove structure 30 formed integrally. The aforementioned cup body 10 includes a cup opening 11, a filter hole 12 opposite to the cup opening 11, an accommodation space 13 formed between the cup opening 11 and the filter hole 12, and a surrounding space 13 The cup noodles 14. The cup body 10 has an approximate circular cone shape, and the diameter of the cup mouth 11 is 74-111 mm, which is larger than the bottom of the cup body 10. In this embodiment, 92.9 mm is preferred; in addition, the cup body 10 to The total length of the cup holder 20 is 60-90 mm. In this implementation, 74.98 mm is preferred, and the cup holder 20 and the cup body 10 are arranged oppositely. In other words, the cup holder 20 and the cup body Viewed from the side, the two together form an approximately inclined L-shaped side edge, as shown in Figures 1, 2 and 3. As shown in Figure 4, the cup holder 20 includes a bottom surface 21 and a positioning platform 22 extending from the bottom surface 21. The positioning platform 22 is formed with the filter hole 12, and the diameter of the cup holder is 80-120 mm In this implementation, 100 mm is preferred; in addition, the bottom surface 21 further has a number of limit members 211, which are arranged radially on the bottom surface 21 (as shown in Figure 5). It is used to insert and snap on the edge of the container 2 to position the improved filter cup structure 1 on the container 2. In another implementation, the positioning platform 22 protruding from the bottom surface 21 can also be used as the lateral positioning of the improved filter cup structure 1 on the container 2 (as shown in Figure 7). The improved structure 1 of the filter cup of the present invention can be made of wood, porcelain, plastic, white porcelain, bone china, stainless steel, silicon rubber, glass, pottery, copper or stone materials. The groove structure 30, as shown in Figures 1, 3 and 6, is composed of a number of long grooves 31 and a number of short grooves 32 arranged radially on the cup surface 14 with a long and short equidistant intervals. A long and short grooves 31, 32 are recessed from the cup surface 14, each including a drainage portion 311, 321 and an introduction portion 312, 322 integrally formed on the drainage portion 311, 321, and the two together form one Water flow approach. The number of the long and short grooves 31 and 32 is preferably 3 to 5. In this embodiment, there are 4 each. They are arranged with one long and one short at equal intervals, so that when water is added, the The cup surface 14 can be guided by the groove structure 30 to guide the water flow into the accommodating space 13, and the filter paper can be attached to the cup surface 14 closely. In particular, the aforementioned long and short grooves 31 and 32 have a special configuration, in which the introduction portions 312 and 322 are closer to the cup base 20 than the drainage portions 311 and 321, and are directly connected to the filter hole 12. The drainage portion 311 of each long groove 31 starts from one end of the cup opening 11 and extends to the introduction portion 312, and the width of the drainage portion 311 is 5.1～7.7 mm, and is equal in size from the end close to the cup opening 11. Extend to the introduction portion 312, in this implementation, 6.3 mm is better; and the width of the drainage portion 321 of each short groove 32 is 5.1 ~ 7.7 mm, and gradually expands from one end near the cup mouth 11 to In this implementation, the introduction portion 322 is preferably 6.4 mm, and the depth of the drainage portion 321 of each short groove 32 gradually increases from the end close to the cup opening 11 to the introduction portion 322. In addition, the introduction portion 312, 322 of each long and short grooves 31, 32 is bent downward from the drainage portion 311, 321 near the end of the cup base 20 to the filter hole 12, so that the bottom end of the filter paper is placed at After entering the accommodating space 13, it will not touch the periphery of the filter hole 12, so that the bottom end of the filter paper forms a complete dripping part, and it also has the function of positioning and supporting the filter paper. Furthermore, the drainage portion 321 of each short groove 32 is separated from the cup opening 11 by an appropriate distance t (as shown in Figures 1, 2, 3 and 6), and the short groove 32 and the long groove 31 The length ratio is 0.3 to 0.5, and the length of each short groove 32 is 28 to 42 mm. In this embodiment, 35.3 mm is preferred. In other words, the end of the drainage part 311 on the cup surface 14 and the cup mouth 11 There is a long groove 31 in the middle, and there is no short groove 32 between the end of the drainage part 321 and the cup opening 11. The purpose is to make the injected hot water flow slowly into the accommodating space 13 at the beginning. , Allow enough time for the water and coffee to combine, and smoothly expel the air in the coffee powder, which can improve the local extraction of coffee powder. In addition, the introduction parts 312, 322 of each long and short grooves 31, 32 form a U-shaped curved surface 321, 321 at the filter hole 12, so that the filter hole 12 has a continuous curved surface (as shown in Figure 3). Shown), and the drainage portion 311 of each long groove 31 forms a U-shaped curved surface at the cup opening 11, so that the cup opening 11 has a contour formed by a spaced curved surface and corresponds to the outer circumference of the cup body 10 The positions of each of the long and short grooves 31 and 32 form a relatively convex shape (as shown in Figure 2). If so, a brand-new improved structure of the filter cup is formed by the structure disclosed above. When using the improved structure 1 of the filter cup of the present invention, the filter paper (not shown in the figure) is first installed in the accommodating space 13 of the cup body 10. At this time, the filter paper and the cup surface 14 are not fully attached, and then the filter cup The improved structure 1 is placed on the container 2; after the improved structure 1 of the filter cup is put in place, pour hot water from the cup surface 14 into the container space 13, and the injected water quickly wets and penetrates the filter paper, so that the filter paper is attached On the cup surface 14, the arrangement of the groove structure 30 with 4 full recesses and 4 semi-recesses allows the filter paper and the cup surface 14 to fit tightly. The tanks can be vented uniformly. In this way, water is initially injected between the end of the short groove 32 and the cup mouth 11. Because of a flat surface, the water flow is slow, so that the water and coffee powder can be fully combined first, and then the conical cup is used. The surface 14 and the plural short grooves 32 are arranged from narrow to wide and from shallow to deep. The water flow rate gradually increases and flows smoothly into the bottom of the filter paper. After the coffee powder is soaked, the bottom of the filter paper flows from the filter hole 12 into the container. In the cup 2, the water flow is smooth and the filter paper and the cup surface 14 can be tightly adhered and uniformly exhausted. Not only can the extracted coffee have a pleasant taste, mellow and delicious, but also make the taste of each coffee extracted more different Not significant. The following embodiments are only examples for understanding the details and connotations of the present invention, but are not used to limit the scope of patent application of the present invention. Test of filter cup properties of hand brewed coffee [Brewing method] Use 15 grams of coffee powder with a particle size of 0.1～0.5 mm, put it into the filter cup with filter paper, dig a small hole in the middle of the coffee powder, and add 15 grams first Steam with hot water for 45 seconds, then pour 215 grams of hot water for extraction, collect the coffee extract for pH, conductivity (Conductivity, CON) and total dissolved solids (TDS) analysis, each The filter cup coffee extraction is carried out in a triple test, and the physical properties of the coffee extract obtained are analyzed as shown in Table 1. Filter cup 1: commercially available convex groove filter cup, filter cup 2: conventional M505900 new patented semi-recessed filter cup , Filter cup 3: 4 full groove filter cups of the present invention. Table I pH CON(ms) TDS(mg/L) Analysis value average value Standard deviation Analysis value average value Standard deviation Analysis value average value Standard deviation Filter bowl 1 5.33 5.34 0.01 2.54 2.52 0.11 1017 1007 41.4 5.35 2.61 1043 5.35 2.40 961 Filter bowl 2 5.31 5.30 0.02 2.52 2.54 0.03 1007 1016 9.54 5.30 2.54 1015 5.28 2.57 1026 Filter bowl 3 5.36 5.35 0.02 2.24 2.25 0.01 898 901 3.51 5.36 2.25 901 5.33 2.26 905 [Coffee extraction characteristics of convex groove filter cup] At present, the hand brewed coffee filter cup is mainly designed with convex groove, which is mainly to prevent the filter paper and the cup surface of the filter cup from being completely attached. When the filter is fully attached, hot water is added to the filter. When the coffee powder in the cup is in the coffee powder, the air in the coffee powder cannot be smoothly discharged, which will cause water accumulation. The convex groove design is mainly designed to improve this water accumulation. However, although the current commercial filter cup is designed with convex grooves, It is easy to cause non-uniformity of the fit between the filter paper and the surface of the filter cup during each extraction, which makes the taste of each extraction coffee have a considerable difference. [Coffee extraction characteristics of grooved filter cup] The grooved design of the filter cup mainly allows the air in the coffee powder to be discharged smoothly, which can improve the phenomenon of water accumulation during extraction. The invention uses 4 full grooves to allow The adhesion between the filter paper and the surface of the filter cup can be tightly fitted, and the exhaust grooves can uniformly exhaust, so that the difference in the taste of each coffee extraction is less significant. [Comparison of Coffee Extraction in Convex and Groove Filter Cup] The standard deviation is a measure of the degree to which a set of values are scattered from the average value. A larger standard deviation means that most of the values are quite different from the average value. A smaller standard deviation means that these values are closer to the average. Therefore, the coffee taste index parameter is represented by the total dissolved solids, and the coffee stability index parameter is based on the standard deviation. From the above three-fold filter cup test (see Table 1), the standard deviation of the total dissolved solids of the commercially available convex grooved filter cup 1 is 41.4, and the standard deviation of the conventional patented semi-grooved filter cup 2 is 9.54. The standard deviation of the four full-groove filter cups 3 of the present invention is 3.51. From the results, it is found that the standard deviation of the filter cup 3 is the lowest, which means that the filter cup 3 is used for hand brewed coffee extraction, and the coffee brewed every time is extracted The concentration of the liquid is not significantly different, and the extraction stability is good. Therefore, the four full-groove design concepts of the present invention are most suitable for hand-made coffee filter cups (ie, filter cup 3). To sum up, the present invention is an improved structure of the filter cup, which can effectively improve the various shortcomings of conventional use. During brewing, the filter paper can be arranged in an equal-spaced radial arrangement of long and short grooves to make the filter paper and the surface of the filter cup At the same time, the bonding can be tightly bonded, and the exhaust grooves can be uniformly exhausted, so that the air in the coffee powder can be smoothly discharged out, which can improve the phenomenon of local extraction of coffee powder, and make the flow rate of coffee filtration more Stable, so that the difference in the taste of each extraction coffee is less significant, so as to achieve the same quality of coffee brewed by everyone, even after several cups of continuous brewing, it can still produce coffee of stable quality, which improves the extraction rate , Effectively save raw materials, so that the invention can be more advanced, more practical, and more in line with the needs of users. It has indeed met the requirements of an invention patent application. A patent application is filed in accordance with the law. However, the above are only preferred embodiments of the present invention, and should not be used to limit the scope of implementation of the present invention; therefore, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the description of the invention , Should still fall within the scope of the invention patent.

1: Improved structure of filter bowl 10: Cup body 11: Cup mouth 12: filter hole 13: accommodation space 14: Cup noodles 2: Rong Cup 20: Cup holder 21: Bottom 211: limit piece 22: positioning platform 30: Groove structure 31: Long groove 311: Drainage Department 312: Introduction Department 3121: U-shaped surface 32: short groove 321: Drainage Department 322: Introduction Department 3221: U-shaped surface

Figure 1 is a three-dimensional schematic diagram of the improved structure of the filter cup of the present invention. Figure 2 is an isometric view of the improved structure of the filter bowl of the present invention. Figure 3 is a schematic top view of the improved structure of the filter bowl of the present invention. Figure 4 is a schematic side view of the improved structure of the filter cup of the present invention. Figure 5 is a schematic bottom view of the improved structure of the filter cup of the present invention. Figure 6 shows the A-A cross-sectional view of Figure 4. Figure 7 is a schematic diagram of one of the improved structures of the filter cup of the present invention in use.

1: Improved structure of filter bowl

10: Cup body

11: Cup mouth

12: filter hole

13: accommodation space

14: Cup noodles

2: Rong Cup

20: Cup holder

21: Bottom

211: limit piece

22: positioning platform

30: Groove structure

31: Long groove

311: Drainage Department

312: Introduction Department

32: short groove

321: Drainage Department

322: Introduction Department

Claims (10)

An improved structure of a filter cup, which is used with filter paper and can be placed on a container, Used to filter and extract a brewing substance in the container, the improved structure of the filter cup includes: The cup body includes a cup mouth, a filter hole opposite to the cup mouth, an accommodating space formed between the cup mouth and the filter hole, and a cup surface surrounding the accommodating space; A cup holder formed at the bottom of the cup body, the cup holder including a bottom surface and a positioning platform extending from the bottom surface, the positioning platform being formed with the filter hole; and A groove structure is composed of a number of long grooves and a number of short grooves arranged radially on the surface of the cup at an equal interval of one long and one short. Each of the long and short grooves is recessed from the surface of the cup. , Each includes a drainage portion and an introduction portion, the introduction portion is closer to the cup seat than the drainage portion, and directly connected to the filter hole, and the drainage portion of each long groove starts from one end of the cup opening to the introduction The width of the drainage portion of each short groove is gradually enlarged from an end close to the cup opening to the introduction portion. According to the improved structure of the filter cup described in item 1 of the scope of patent application, each short groove The depth of the drainage part gradually increases from the end close to the cup mouth to the introduction part. According to the improved structure of the filter cup described in item 1 of the scope of patent application, each of the long and short The introduction part of the groove is bent downward from the end of the drainage part close to the cup seat to the filter hole, so that the bottom end of the filter paper will not touch the periphery of the filter hole after being placed in the containing space. According to the improved structure of the filter cup described in item 1 of the scope of patent application, each short groove The drainage part is separated from the cup mouth by a distance. According to the improved structure of the filter cup described in item 1 or 4 of the scope of patent application, each short concave The length of the groove is 28～42 mm. According to the improved structure of the filter cup described in item 1 of the scope of patent application, each long groove The width of the drainage part extends from the end close to the cup mouth to the introduction part. According to the improved structure of the filter cup described in item 1 or 6 of the scope of patent application, each long concave The width of the groove is 5.1～7.7 mm. According to the improved structure of the filter cup described in item 1 of the scope of patent application, the bottom of the cup holder The surface further has a number of limiters, which are arranged radially at equal intervals on the bottom surface for embedding on the container. The number of the long and short grooves is 3 to 5 each The improved structure of the filter cup can be made of materials selected from wood, porcelain, plastic, white porcelain, bone china, stainless steel, silicon rubber, glass, ceramic, copper or stone, and the ratio of the length of the short groove to the long groove 0.3～0.5, the diameter of the cup holder is 80～120 mm, the diameter of the cup mouth is 74～111 mm, each of the short grooves has a width of 5.1～7.7 mm at the widest part, and the cup body to the cup The total length of the seat is 60-90 mm. The outer circumference of the cup body corresponds to the position of each long and short groove to form a relatively convex shape. According to the improved structure of the filter cup described in item 1 of the scope of patent application, each of the long and short The introduction part of the groove forms a U-shaped curved surface at the filter hole, so that the filter hole has a continuous curved surface. According to the improved structure of the filter cup described in item 1 of the scope of patent application, each long groove The drainage part forms a U-shaped curved surface at the cup mouth, so that the cup mouth has a contour formed by an interval curved surface.

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