Electric control coffee brewing and filtering device

Abstract

The utility model discloses an electric control coffee brewing and filtering device which comprises a filter cup with a soaking cavity and a micropore filter screen arranged at the bottom of the soaking cavity, a water outlet hole penetrating through an inner cavity of the filter cup is formed in the lower end of the filter cup, the micropore filter screen is arranged above the water outlet hole, and an installation cavity is formed in the lower portion of the filter cup. An air pump, a PCB (Printed Circuit Board) control panel for controlling the air pump to work and a battery are arranged in the mounting cavity, an air inlet hole is formed in the bottom surface of the filter cup, the filter cup is also provided with an air outlet hole communicated with the outside, and an air inlet and an air outlet of the air pump are respectively communicated with the air inlet hole and the air outlet hole to form an independent exhaust passage capable of being opened and closed by electric control. According to the utility model, the air pump is adopted to control the opening and closing of the exhaust passage, the filtering of coffee particle soaking liquid is accelerated by utilizing the atmospheric pressure principle, the electrified or automatic control is realized, the manual operation steps can be reduced, the operation is simpler and more labor-saving, the use is safe and reliable, the filtering efficiency is accelerated, and coffee drinks with better quality can be obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brewing coffee, in particular to an electric control coffee brewing and filtering device. BACKGROUND

[0002] Instant brewing with ground coffee and hot water is a common coffee beverage preparation method.

[0003] During the preparation process, factors such as the fineness of coffee powder, soaking time, water temperature, and filtering speed have a decisive influence on the taste quality of the product. Coffee residue needs to be filtered out during the brewing process, and the filtered coffee tastes better.

[0004] A coffee filter cup disclosed in Chinese Utility Model Patent No. 202323070176.8 includes a lower cup body, which is a hollow structure with an opening at the top; an upper cup body, which is threadedly connected to the top of the lower cup body at the lower part, and is also a hollow structure with openings at the bottom and top; a cup cover, which is threadedly connected to the top of the upper cup body at the bottom; and a hollow structure provided on the upper cup body, which is provided with a dripping filter. The upper cup body is "conical". As a cup, the lower cup body can be used alone as a cup for drinking water or coffee, or the lower cup body and the upper cup body can be used together as a cup for drinking water or coffee. When brewing dripping coffee is needed, the upper cup body is inverted in the lower cup body, coffee filter paper is placed on the filter of the upper cup body, and then ground coffee is added for brewing and dripping. The coffee cup is brewed and dripped in the lower cup body.

[0005] The coffee filter cup described above uses a dripping filter in combination with coffee filter paper to achieve filtering, which has low filtering efficiency and cannot accelerate the filtering efficiency. In addition, it needs manual replacement of coffee filter paper, which is cumbersome to operate and not convenient to use, causing great inconvenience to users.

[0006] In view of this, the present inventors have proposed the following technical solutions. UTILITY MODEL CONTENTS

[0007] The utility model aims at overcoming the defects of the prior art and providing an electric control coffee brewing and filtering device.

[0008] To solve the above technical problems, the utility model adopts the following technical solutions: the electric control coffee brewing and filtering device includes a filter cup with a soaking cavity and a microporous filter screen arranged at the bottom of the soaking cavity. The lower end of the filter cup is provided with a water outlet hole penetrating the inner cavity of the filter cup. The microporous filter screen is arranged above the water outlet hole. The lower part of the filter cup is provided with a mounting cavity. The mounting cavity is provided with a gas pump, a PCB control panel for controlling the operation of the gas pump, and a battery. The bottom surface of the filter cup is provided with an air inlet hole. The filter cup is also provided with an air outlet hole connected to the outside. The air inlet and outlet of the gas pump are respectively connected to the air inlet and outlet holes to form an independent exhaust passage that can be electrically controlled to open and close.

[0009] Furthermore, in the above technical solution, the lower part of the filter cup is also provided with a connecting part for assembly with the drinking cup. The air inlet and water outlet both pass through the bottom of the connecting part and communicate with the inner cavity of the drinking cup. The lower part of the filter cup is also provided with a downward protruding part. The protruding part is located on the outside of the connecting part. The air outlet passes through the lower end face of the protruding part, and the protruding part has a notch that communicates with the air outlet along its outer side inward. After the filter cup and the drinking cup are assembled, the notch connects the gap between the filter cup and the drinking cup to communicate with the outside.

[0010] Furthermore, in the above technical solution, the air pump's inlet and outlet are respectively connected to an inlet pipe and an outlet pipe, and the inlet pipe is connected to an inlet hole, and the outlet pipe is connected to an outlet hole; a one-way valve is also provided on the inlet pipe or outlet pipe. When the air pump is not started, the one-way valve is in a closed state; when the air pump is started, the airflow is generated and passes through the one-way valve to drive the one-way valve to open.

[0011] Furthermore, in the above technical solution, the outer surface of the filter cup is provided with a control switch and a charging interface that are electrically connected to the PCB control board.

[0012] Furthermore, in the above technical solution, a stepped groove is provided at the bottom of the inner cavity of the filter cup, the outer edge of the microporous filter is installed in the stepped groove, the fixing ring is pressed into the stepped groove, and pressed on the outer surface of the microporous filter to fix the microporous filter in the stepped groove.

[0013] Furthermore, in the above technical solution, the inner wall of the fixing ring is formed with a convex piece that is easy to disassemble, and the convex piece is in an inclined state; the outer surface of the fixing ring is formed with a positioning part, and the positioning part is also embedded in the positioning groove provided in the inner wall of the stepped groove.

[0014] Furthermore, in the above technical solution, the bottom surface of the soaking chamber is an inclined surface, and the lowest point of the inclined surface is connected to the water outlet. A support part is also provided in the middle of the bottom surface of the soaking chamber, and the upper end of the support part contacts the bottom surface of the microporous filter to support the microporous filter.

[0015] Furthermore, in the above technical solution, the filter cup includes a filter cup body, a filter cup middle seat, and a filter cup base, which are sealed and installed sequentially from top to bottom. The installation cavity is formed between the filter cup middle seat and the filter cup base, and the soaking cavity is formed between the filter cup body and the filter cup middle seat. The air inlet and air outlet are both located on the filter cup base.

[0016] Furthermore, in the above technical solution, the filter cup body has a double-layer structure, which includes an outer cup body and an inner liner integrally fixed inside the outer cup body. A gap is formed between the outer wall of the inner liner and the inner wall of the outer cup body, and the inner liner has a shape that is larger at the top and smaller at the bottom.

[0017] Furthermore, in the above technical solution, the lower end of the filter cup body is provided with a downwardly protruding first water outlet pipe, the lower end of the filter cup seat is provided with a downwardly protruding second water outlet pipe, and the lower end of the filter cup base is provided with a downwardly protruding third water outlet pipe. The lower end of the first water outlet pipe is fitted with a first sealing ring, which passes through the upper end of the second water outlet pipe from top to bottom to form a sealed assembly. The lower end of the second water outlet pipe is fitted with a second sealing ring, which passes through the upper end of the third water outlet pipe from top to bottom to form a sealed assembly. The inner holes of the first, second, and third water outlet pipes are joined together to form the water outlet hole.

[0018] After adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: The filter cup of this utility model is equipped with an independent exhaust passage, and an air pump is used to control the opening and closing of the exhaust passage. Utilizing the principle of atmospheric pressure, it accelerates the filtration of coffee particle infusion, achieving electrified or automated control, reducing manual operation steps, making operation simpler and less labor-intensive, safer and more reliable, and accelerating filtration efficiency, resulting in a higher quality coffee beverage. Furthermore, this utility model uses a miniaturized and integrated filter cup, which can be combined with various drinking cups as the cup body to form a detachable structure, making it convenient to carry and use. Attached image description:

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a perspective view of the present invention from another angle;

[0021] Figure 3 This is an exploded view of this utility model;

[0022] Figure 4 This is a diagram of the internal structure of this utility model;

[0023] Figure 5 This is a perspective view of the filter cup base in this utility model;

[0024] Figure 6 This is a cross-sectional view of the present invention;

[0025] Figure 7 This is a perspective view of the filter cup base from another angle in this utility model;

[0026] Figure 8 This is a schematic diagram illustrating the usage principle of this utility model when assembled with a drinking cup;

[0027] Figure 9 This is an instruction diagram showing the use of this utility model and its assembly with a drinking cup. Detailed implementation method:

[0028] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0029] See Figures 1-9 As shown, an electronically controlled coffee brewing and filtering device includes a filter cup 1 and a microporous filter screen 2.

[0030] In this embodiment, the filter cup 1 has an infusion chamber 101, which is used to hold coffee particles / coffee powder and hot water for infusing coffee. A microporous filter 2 is disposed at the bottom of the infusion chamber 101, and is used to filter coffee particle residue to obtain a coffee beverage, thus achieving the purpose of brewing coffee. The filter cup 1 has a water outlet 102 penetrating its inner cavity at its lower end. The microporous filter 2 is positioned above the water outlet 102, so that the coffee particle infusion liquid formed after the coffee particles / coffee powder and hot water are combined is filtered through the microporous filter 2 and flows out from the water outlet 102.

[0031] The main improvements made in this utility model are as follows:

[0032] The filter cup 1 has a mounting cavity 103 at its lower part. The mounting cavity 103 contains an air pump 3, a PCB control board 33 for controlling the operation of the air pump 3, and a battery 34. The bottom surface of the filter cup 1 has an air inlet 104 and an air outlet 105 that connects to the outside. The air inlet and outlet of the air pump 3 are connected to the air inlet 104 and the air outlet 105, respectively, to form an independent exhaust passage that can be electrically controlled to open and close.

[0033] In practical use, the filter cup 1 is used in conjunction with the drinking cup 4. The drinking cup 4 is fixed to the lower end of the filter cup 1, and a sealed holding space 40 is formed inside the drinking cup 4. In the initial state, the air pump 3 is not running. Coffee particles / coffee powder and hot water are poured into the steeping chamber 101 of the filter cup 1 in sequence to form a coffee particle steeping liquid. Because the surface tension of the coffee particle steeping liquid at the microporous filter screen 2 is large enough, the air between the filter cup 1 and the drinking cup 3 forms a gas seal in the holding space, which is balanced with the external atmospheric pressure. The coffee particle steeping liquid is supported on the filter screen, maintaining the steeping and extraction state of the coffee particles and hot water, that is, in the brewing state. After the coffee particles are fully extracted, the air pump is activated, opening the exhaust passage. At this time, the gas between the filter cup and the drinking cup is continuously expelled through the opened exhaust passage (i.e., entering through the air inlet 104, passing through the air pump 3, and exiting through the air outlet 105). This reduces the air pressure in the drinking cup 4, and the atmospheric pressure propels the coffee particle infusion liquid through the filter screen 2, flowing into the drinking cup 4's holding space 40 through the water outlet 101. This quickly completes the filtration of the coffee particle infusion liquid, resulting in a higher quality coffee beverage. Finally, the filter cup 1 is removed, yielding a cup of coffee. In other words, the filter cup 1 of this invention has an independent exhaust passage, controlled by an air pump. Utilizing atmospheric pressure, it accelerates the filtration of the coffee particle infusion liquid, achieving electrified or automated control. This reduces manual operation steps, making it simpler and more labor-saving, safer and more reliable, and accelerating filtration efficiency to obtain a higher quality coffee beverage. In addition, this utility model adopts a miniaturized and integrated filter cup, which can be combined with various drinking cups that serve as the cup body to form a detachable structure, making it convenient to carry and use.

[0034] To further improve the airtightness of the exhaust passage, a one-way valve 30 is added. The air inlet or outlet of the air pump 3 is connected to the one-way valve 30, so that the entire exhaust passage can only be unidirectionally vented, that is, only exhaust can be vented outwards, and other external air cannot enter. As a result, when the drinking cup 4 is fixed to the lower end of the filter cup 1 in later use, the sealing effect of the holding space 40 formed in the drinking cup 4 is better.

[0035] The air pump 3 has an inlet and an outlet connected to an inlet pipe 31 and an outlet pipe 32, respectively. The inlet pipe 31 is connected to an inlet hole 104, and the outlet pipe 32 is connected to an outlet hole 105. A one-way valve 30 is also provided on the inlet pipe 31 or the outlet pipe 32. When the air pump 3 is not running, the one-way valve 30 is closed. When the air pump 3 starts, airflow passes through the one-way valve 30 to open it. Both the inlet pipe 31 and the outlet pipe 32 are made of flexible tubing, which facilitates periodic bending and makes installation easier. The one-way valve 30 is a conventional one-way valve and will not be described in detail here. It is normally closed, but opens when the air pump generates airflow. Those skilled in the art can reasonably select a suitable one-way valve.

[0036] The assembly structure of the filter cup 1 and the microporous filter screen 2 in this utility model is as follows: A stepped groove 107 is provided at the bottom of the inner cavity of the filter cup 1. The outer edge of the microporous filter screen 2 is installed in the stepped groove 107. The fixing ring 5 is pressed into the stepped groove 107 and pressed against the outer surface of the microporous filter screen 2 to fix the microporous filter screen 2 in the stepped groove 107. The assembly structure is simple and easy to install. Among them, the outer surface of the fixing ring 5 is formed with a positioning part 52, which is also embedded in the positioning groove 108 provided in the inner wall of the stepped groove 107, thereby ensuring that the fixing ring 5 can be more stably installed in the stepped groove 107 and preventing the fixing ring 5 from accidentally detaching from the stepped groove 107.

[0037] To facilitate the disassembly of the retaining ring 5, the structure of the retaining ring 5 has been improved. Specifically, the inner wall of the retaining ring 5 is formed with a convex piece 51 that is easy to disassemble. The convex piece 51 is in an inclined state, which makes it easy to pinch the convex piece 51 with fingers to remove the entire filter cup 1 at the lower end of the retaining ring 5, or to use tools to hold the convex piece 51 to remove the entire filter cup 1 at the lower end of the retaining ring 5, so that disassembly is very convenient.

[0038] The bottom surface of the soaking chamber 101 is inclined, and the lowest point of the inclined surface is connected to the water outlet 102. This facilitates the flow of liquid within the soaking chamber 101 and ensures that all liquid flows to the water outlet 102, preventing liquid residue. Furthermore, a support portion 109 is provided in the middle of the bottom surface of the soaking chamber 101. The upper end of the support portion 109 contacts the bottom surface of the microporous filter 2 to provide support for the microporous filter 2, thereby ensuring the stable installation of the microporous filter 2 and preventing the center of the microporous filter 2 from collapsing, thus guaranteeing the quality of the microporous filter 2.

[0039] To facilitate the connection and installation of the filter cup 1 and the drinking cup 4, this invention provides a connecting part 106 at the lower part of the filter cup 1 for assembly with the drinking cup 4. Specifically, the filter cup 1 is assembled to the upper end of the drinking cup 4 via the connecting part 106. The connecting part 106 and the upper end of the drinking cup 4 can be connected by threads or by a snap-fit ​​mechanism after rotation. In this embodiment, the connecting part 106 is threaded to the upper end of the drinking cup 4, resulting in a stable installation structure and improved sealing. Furthermore, a waterproof sealing ring is provided between the filter cup 1 and the drinking cup 4.

[0040] The air inlet 104 and the water outlet 102 both penetrate the bottom of the connecting part 106, so that after the filter cup 1 is assembled with the upper end of the drinking cup 4 through the connecting part 106, the air inlet 104 and the water outlet 102 are both connected to the inner cavity of the drinking cup 4. To improve the aesthetics of the filter cup 1 and prevent the air vent 105 from being blocked by foreign objects, the following design is made: The lower part of the filter cup 1 is also provided with a downward protruding part 10, which is located outside the connecting part 106. The air vent 105 passes through the lower end face of the protruding part 10, and the protruding part 10 has a notch 100 that connects to the air vent 105 along its outer side inward. After the filter cup 1 is assembled with the drinking cup 4, the lower end face of the protruding part 10 contacts the upper end face of the drinking cup 4, so that a gap is formed between the lower part of the filter cup 1 (the outer part of the protruding part 10) and the upper end face of the drinking cup 4. At this time, the notch 100 connects the gap between the filter cup 1 and the drinking cup 4 to connect to the outside, thereby allowing the air vent 105 to connect to the outside, achieving the design of a hidden air vent 105, which not only improves the aesthetics of the filter cup 1 but also prevents the air vent 105 from being blocked by foreign objects.

[0041] The outer surface of the filter cup 1 is provided with a control switch 331 and a charging interface 332, which are electrically connected to the PCB control board 33. The control switch 331 can control the operation of the air pump, and the charging interface 332 can be connected to a charging cable to charge the battery.

[0042] The specific structure of the filter cup 1 is as follows, which mainly includes three parts: the filter cup 1 includes a filter cup body 11, a filter cup middle seat 12, and a filter cup base 13, which are sealed and installed from top to bottom. The installation cavity 103 is formed between the filter cup middle seat 12 and the filter cup base 13, and the soaking cavity 101 is formed between the filter cup body 11 and the filter cup middle seat 12. The air inlet 104 and the air outlet 105 are both provided on the filter cup base 13.

[0043] In some embodiments, the filter cup body 11 has a single-layer structure. In other embodiments, the filter cup body 11 has a double-layer structure, which can achieve the functions of heat insulation and preventing scalding. The filter cup body 11 includes an outer cup body 111 and an inner liner 112 integrally fixed inside the outer cup body 111. A gap is formed between the outer wall of the inner liner 112 and the inner wall of the outer cup body 111, and the inner liner 112 has a shape that is larger at the top and smaller at the bottom, which is not conducive to liquid flow.

[0044] The filter cup body 11 has a downwardly protruding first water outlet pipe 113 at its lower end, the filter cup middle seat 12 has a downwardly protruding second water outlet pipe 121 at its lower end, and the filter cup base 13 has a downwardly protruding third water outlet pipe 131 at its lower end. The lower end of the first water outlet pipe 113 is fitted with a first sealing ring 114, which passes through the upper end of the second water outlet pipe 121 from top to bottom to form a sealed assembly. The lower end of the second water outlet pipe 121 is fitted with a second sealing ring 122, which passes through the upper end of the third water outlet pipe 131 from top to bottom to form a sealed assembly. The inner holes of the first water outlet pipe 113, the second water outlet pipe 121, and the third water outlet pipe 131 are joined to form the water outlet hole 102. The assembly structure is simple and forms a water outlet hole 102 that will not leak.

[0045] In summary, the filter cup 1 of this invention features an independent exhaust passage, controlled by an air pump. Utilizing atmospheric pressure, it accelerates the filtration of coffee particles infusion, achieving electrified or automated control. This reduces manual operation, making it simpler, more labor-saving, safer, and more reliable. Furthermore, it accelerates filtration efficiency, resulting in higher-quality coffee beverages. In addition, this invention employs a miniaturized and integrated filter cup, allowing for combination with various drinking cups to form a detachable structure for easy portability and use.

[0046] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. An electrically controlled coffee brewing and filtering device, comprising a filter cup (1) having an immersion chamber (101) and a microporous filter screen (2) disposed at the bottom of the immersion chamber (101), wherein the lower end of the filter cup (1) is provided with a water outlet (102) penetrating the inner cavity of the filter cup (1), and the microporous filter screen (2) is positioned above the water outlet (102), characterized in that: The filter cup (1) has an installation cavity (103) at its lower part. The installation cavity (103) contains an air pump (3), a PCB control board (33) for controlling the operation of the air pump (3), and a battery (34). The bottom surface of the filter cup (1) has an air inlet (104) and an air outlet (105) that connects to the outside. The air inlet and outlet of the air pump (3) are connected to the air inlet (104) and the air outlet (105) respectively to form an independent exhaust passage that can be electrically controlled to open and close.

2. The electronically controlled coffee brewing and filtering device according to claim 1, characterized in that: The filter cup (1) is also provided with a connecting part (106) for assembly with the drinking cup (4). The air inlet (104) and water outlet (102) are both through the bottom of the connecting part (106) and communicate with the inner cavity of the drinking cup (4). The filter cup (1) is also provided with a downward protruding part (10) at the bottom. The protruding part (10) is located outside the connecting part (106). The air outlet (105) is through the lower end face of the protruding part (10). The protruding part (10) has a notch (100) that communicates with the air outlet (105) along its outer side. After the filter cup (1) is assembled with the drinking cup (4), the notch (100) connects the gap between the filter cup (1) and the drinking cup (4) to communicate with the outside.

3. The electronically controlled coffee brewing and filtering device according to claim 1, characterized in that: The air pump (3) has an air inlet and an air outlet connected to an air inlet pipe (31) and an air outlet pipe (32) respectively. The air inlet pipe (31) is connected to an air inlet hole (104), and the air outlet pipe (32) is connected to an air outlet hole (105). A one-way valve (30) is also provided on the air inlet pipe (31) or the air outlet pipe (32). When the air pump (3) is not started, the one-way valve (30) is closed. When the air pump (3) is started, airflow is generated and passes through the one-way valve (30) to drive the one-way valve (30) to open.

4. An electronically controlled coffee brewing and filtering device according to any one of claims 1-3, characterized in that: The outer surface of the filter cup (1) is provided with a control switch (331) and a charging interface (332) that are electrically connected to the PCB control board (33).

5. An electronically controlled coffee brewing and filtering device according to any one of claims 1-3, characterized in that: The bottom of the inner cavity of the filter cup (1) is provided with a stepped groove (107). The outer edge of the microporous filter (2) is installed in the stepped groove (107). The fixing ring (5) is pressed into the stepped groove (107) and pressed on the outer surface of the microporous filter (2) to fix the microporous filter (2) in the stepped groove (107).

6. The electronically controlled coffee brewing and filtering device according to claim 5, characterized in that: The inner wall of the fixing ring (5) is formed with a convex piece (51) that is easy to disassemble, and the convex piece (51) is in an inclined state; the outer surface of the fixing ring (5) is formed with a positioning part (52), and the positioning part (52) is also embedded in the positioning groove (108) provided on the inner wall of the stepped groove (107).

7. The electronically controlled coffee brewing and filtering device according to claim 5, characterized in that: The bottom surface of the soaking chamber (101) is an inclined surface, and the lowest point of the inclined surface is connected to the water outlet (102). A support part (109) is also provided in the middle of the bottom surface of the soaking chamber (101). The upper end of the support part (109) is in contact with the bottom surface of the microporous filter (2) to support the microporous filter (2).

8. An electronically controlled coffee brewing and filtering device according to any one of claims 1-3, characterized in that: The filter cup (1) includes a filter cup body (11), a filter cup middle seat (12), and a filter cup base (13) that are sealed and installed from top to bottom. The installation cavity (103) is formed between the filter cup middle seat (12) and the filter cup base (13), and the soaking cavity (101) is formed between the filter cup body (11) and the filter cup middle seat (12). The air inlet (104) and the air outlet (105) are both located on the filter cup base (13).

9. The electronically controlled coffee brewing and filtering device according to claim 8, characterized in that: The filter cup body (11) has a double-layer structure, including an outer cup body (111) and an inner liner (112) integrally fixed inside the outer cup body (111). The outer wall of the inner liner (112) and the inner wall of the outer cup body (111) are separated, and the inner liner (112) has a shape that is larger at the top and smaller at the bottom.

10. The electronically controlled coffee brewing and filtering device according to claim 8, characterized in that: The filter cup body (11) has a downward protruding first water outlet pipe (113) at its lower end, the filter cup middle seat (12) has a downward protruding second water outlet pipe (121) at its lower end, and the filter cup base (13) has a downward protruding third water outlet pipe (131) at its lower end. The lower end of the first water outlet pipe (113) is fitted with a first sealing ring (114) and passes through the upper end of the second water outlet pipe (121) from top to bottom to form a sealed assembly. The lower end of the second water outlet pipe (121) is fitted with a second sealing ring (122) and passes through the upper end of the third water outlet pipe (131) from top to bottom to form a sealed assembly. The inner holes of the first water outlet pipe (113), the second water outlet pipe (121), and the third water outlet pipe (131) are connected to form the water outlet hole (102).

Images