Intake and exhaust system and cold brew coffee machine

Abstract

We provide intake and exhaust systems and cold brew coffee machines. [Solution] The intake and exhaust device and cold brew coffee machine relate to the technology of coffee machines. The intake and exhaust device 4 has a main casing 41, an air pump 42 installed inside the main casing 41, a motor 43, a rotating disc 44, a first air pipe 45, a second air pipe 46, and a third air pipe 47. The intake and exhaust device 4 of the cold brew coffee machine has been optimized and improved, and an innovative structural design using a single air pump 42 and a single motor 43 has been adopted. The motor 43 drives the forward or reverse rotation of the rotating disc 44, switching the connection state of each air pipe 45, 46, and 47. In this way, the intake state or exhaust state can be automatically switched in cooperation with the air pump 42. Compared to conventional technology, it has the advantages of a compact structure, clever design, small volume, and easy and convenient operation, contributing to the improvement of the extraction effect and extraction efficiency of the cold brew coffee machine.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee machines, and particularly to an intake and exhaust device and a cold brew coffee machine.

Background Art

[0002] Cold brew coffee refers to a coffee liquid obtained by immersing coffee powder in cold water for several hours and then filtering it. Since no heating is performed, cold brew coffee has a very mild sour taste, a greatly increased sweet taste, and a smoother mouthfeel. A cold brew coffee machine adopts a method of intake and air supply by an air pump, and repeatedly circulates cold water inside an inner cup and an outer cup to repeatedly extract coffee, thereby effectively increasing the extraction speed and shortening people's waiting time.

[0003] The intake and exhaust devices of conventional cold brew coffee machines usually adopt the following two types of structures. One is a double air pump structure, in which one air pump intakes air and the other air pump exhausts air. The other is a structure in which two solenoid valves are combined with a single air pump, and one air pump is controlled by the two solenoid valves to realize the switching of intake and exhaust. However, both of these two types of intake and exhaust devices have the problem that their structures are complex and disadvantageous for production and assembly.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The prior art adopts a double air pump structure or a structure combining a single air pump and two solenoid valves, but both methods have the disadvantage that the structure is complex and production and assembly become complicated.

Means for Solving the Problems

[0005] This invention relates to an intake and exhaust device and a cold brew coffee machine that can solve the problem of the complex structure of the intake and exhaust devices found in conventional cold brew coffee machines.

[0006] The intake and exhaust device according to the present invention comprises a main casing, and an air pump, motor, rotating disk, first air pipe, second air pipe, and third air pipe installed inside the main casing, wherein the rotating disk is driven and connected to the motor, and a first chamber, a second chamber, and a third chamber, which are independent of each other, are installed between the rotating disk and the main casing, a first vent is installed in the side wall of the main casing, a second vent is installed at the bottom of the second chamber, and a third vent is installed at the bottom of the third chamber, one end of the first air pipe communicates with the first vent and the other end communicates with the first chamber via the rotating disk, one end of the second air pipe communicates with the intake port of the air pump and the other end communicates with the second chamber or the first chamber via the rotating disk, and one end of the third air pipe communicates with the exhaust port of the air pump and the other end communicates with the first chamber or the third chamber via the rotating disk.

[0007] Furthermore, the main casing is provided with a mounting groove, a first seal ring is fitted to the outer edge of the mounting groove, a second vent and a third vent are provided inside the mounting groove, a second seal ring and a third seal ring are fitted to the outer edges of the second vent and the third vent, respectively, and the bottom of the bottom of the rotating disk abuts against the first seal ring, the second seal ring and the third seal ring, respectively, thereby dividing the mounting groove into the first chamber, the second chamber and the third chamber.

[0008] Furthermore, a first annular projection is provided on the main casing, and the mounting groove is formed inside the first annular projection. A relief groove is provided on the rotating disk at a position corresponding to the mounting groove. The first seal ring abuts against the outer edge of the relief groove, and the second and third seal rings abut within the relief groove.

[0009] Furthermore, an annular step is provided on the first annular protrusion, an annular recess is provided on the bottom of the rotating disk, and the first seal ring is fitted between the annular step and the annular recess.

[0010] Furthermore, a second annular projection and a third annular projection are provided within the mounting groove, a second ventilation opening and a third ventilation opening are provided within the second annular projection and the third annular projection, respectively, and a second groove and a third groove for mounting the second seal ring and the third seal ring are provided.

[0011] Furthermore, an arc-shaped projection is provided on the upper end surface of the rotating disk, positioning projections are provided at both ends of the arc-shaped projection, and the device also has an inner frame installed inside the main casing, the inner frame having a mounting portion for attaching the rotating disk and an arc-shaped positioning block that contacts the positioning projection.

[0012] Furthermore, a drive wheel is installed on the output shaft of the motor, and an outer tooth portion that meshes with the drive wheel is installed on the outer wall of the rotating disk.

[0013] Furthermore, the rotating disk has a first connection port for attaching the first air pipe, and a second connection port and a third connection port for attaching the second air pipe and the third air pipe are provided to the side of the first connection port.

[0014] The cold brew coffee machine has an upper inner cup, a lower inner cup, and an outer cup, and the intake and exhaust device is installed at the upper end of the upper inner cup. [Effects of the Invention]

[0015] Compared to conventional technologies, this invention has the following advantages:

[0016] This invention optimizes and improves the intake and exhaust system of a cold brew coffee machine, adopting an innovative structural design with a single air pump and a single motor. The motor drives the forward or reverse rotation of the rotating disk, switching the connection state of each air pipe, thereby automatically switching between intake and exhaust states in conjunction with the air pump. This invention has the advantages of a compact structure, ingenious design, small volume, and ease and convenience of operation, and can improve the extraction effect and extraction efficiency of the cold brew coffee machine. [Brief explanation of the drawing]

[0017] [Figure 1] This is a schematic diagram of the structure of the present invention. [Figure 2] This is a schematic diagram of the disassembled intake and exhaust system according to the present invention. [Figure 3] This is a schematic diagram of the disassembled intake and exhaust system according to the present invention. [Figure 4] This is a schematic diagram illustrating the exhaust state of the intake and exhaust system according to the present invention. [Figure 5] This is a schematic cross-sectional view of the exhaust state according to the present invention. [Figure 6] This is a schematic diagram of the intake state of the intake and exhaust device according to the present invention. [Figure 7] This is a schematic cross-sectional view of the exhaust state according to the present invention. [Modes for carrying out the invention]

[0018] (One embodiment) Specific embodiments of the present invention will be described below with reference to the attached drawings. While many details will be described below to fully understand the present invention, those skilled in the art may be able to implement the invention without necessarily needing these details.

[0019] As shown in FIGS. 1, 5, and 7, the cold brew coffee machine according to this embodiment has an upper inner cup 1, a lower inner cup 2, and an outer cup 3. An air intake and exhaust device 4 is connected to the upper end of the upper inner cup 1, and the lower inner cup 2 is connected to the lower end. The outer cup 3 is mounted outside the upper inner cup 1 and the lower inner cup 2, and a liquid storage space 30 is provided between the outer cup 3 and the upper inner cup 1 and the lower inner cup 2. The air intake and exhaust device 4 communicates with the inside of the upper inner cup 1, the lower inner cup 2, and the liquid storage space 30, and is used for the air intake or exhaust operation. Thereby, the water in the liquid storage space 30 is sucked into the upper inner cup 1 and the lower inner cup 2, or the water in the upper inner cup 1 and the lower inner cup 2 is discharged into the liquid storage space 30.

[0020] As shown in FIGS. 2 and 3, the air intake and exhaust device 4 has a main body casing 41, and an air pump 42, a motor 43, a rotating disk 44, a first air pipe 45, a second air pipe 46, and a third air pipe 47 installed inside the main body casing 41. The rotating disk 44 is drivingly connected to the motor 43, and mutually independent first chamber 401, second chamber 402, and third chamber 403 are provided between the rotating disk 44 and the main body casing 41. A first vent 413 is provided on the side wall of the main body casing 41, a second vent 414 is provided at the bottom of the second chamber 402, and a third vent 415 is provided at the bottom of the third chamber 403. One end of the first air pipe 45 communicates with the first vent 413, and the other end communicates with the first chamber 401 through the rotating disk 44. One end of the second air pipe 46 communicates with the exhaust port of the air pump 42, and the other end communicates with the second chamber 402 or the first chamber 401 through the rotating disk 44. One end of the third air pipe 47 communicates with the intake port of the air pump 42, and the other end communicates with the first chamber 401 or the third chamber 403 through the rotating disk 44. During operation, the rotating disk 44 rotates forward or reversely driven by the motor 43, thereby switching the second air pipe 46 between the second chamber 402 and the first chamber 401, and also switching the third air pipe 47 between the first chamber 401 and the third chamber 403, so as to realize air intake or exhaust.

[0021] As shown in FIGS. 2 to 7, an attachment groove (not shown) is provided in the main body casing 41, a first seal ring 405 is mounted on the outer peripheral edge of the attachment groove, and a second vent hole 414 and a third vent hole 415 are provided in the attachment groove. Second seal rings 406 and third seal rings 407 are respectively provided on the outer peripheral edges of the second vent hole 414 and the third vent hole 415. The bottom of the bottom of the rotating disk 44 abuts against the first seal ring 405, the second seal ring 406, and the third seal ring 407 respectively, whereby the attachment groove is partitioned into a first chamber 401, a second chamber 402, and a third chamber 403. In the present invention, by adopting a structure in which a plurality of seal rings are skillfully used to partition and isolate each chamber, the structures of the main body casing 41 and the rotating disk 44 can be simplified, good sealing performance can be realized, and the effects of air intake and exhaust can be ensured.

[0022] As shown in FIGS. 2 to 7, specifically, a first annular convex portion 408 is provided in the main body casing 41, and an attachment groove is formed inside the first annular convex portion 408. A relief groove 440 is provided in the rotating disk 44 at a position corresponding to the attachment groove. The first seal ring 405 abuts against the outer peripheral edge of the relief groove 440, and the second seal ring 406 and the third seal ring 407 abut inside the relief groove 440. By adopting the design of the first annular convex portion 408 and the relief groove 440, the fitting between the rotating disk 44 and the main body casing 41 becomes tighter and firmer, and the sealing performance of each chamber can be improved.

[0023] As shown in Figures 2 to 7, more specifically, an annular step is provided on the first annular protrusion 408, an annular recess 441 is provided on the bottom of the rotating disk 44, and the first seal ring 405 is mounted between the annular step and the annular recess 441. The second annular protrusion 409 and the third annular protrusion 410 are provided in the mounting groove, and the second vent 414 and the third vent 415 are provided in the second annular protrusion 409 and the third annular protrusion 410, respectively. In addition, a second groove (not shown) and a third groove (not shown) are provided for mounting the second seal ring 406 and the third seal ring 407. By designing the mounting structure of each seal ring in detail, this invention makes the assembly of the seal rings stable and reliable, and further improves the sealing performance.

[0024] As shown in Figures 2 and 3, an arc-shaped projection 442 is provided on the upper end surface of the rotating disk 44, and positioning projections 443 are provided at both ends of the arc-shaped projection 442. The intake and exhaust device 4 further has an inner frame 48 installed inside the main casing 41, and the inner frame 48 is provided with a mounting portion 481 for attaching the rotating disk 44 and an arc-shaped positioning block 482 that abuts against the positioning projection 443. When the rotating disk 44 rotates, the positioning projection 443 and the arc-shaped positioning block 482 effectively perform their positioning functions, ensuring that the second air pipe 46 and the third air pipe 47 are accurately connected to a predetermined chamber.

[0025] As shown in Figures 2 to 7, the intake and exhaust device 4 further includes a battery 49 for supplying power to the air pump 42 and motor 43. The air pump 42, motor 43, and battery 49 are all installed inside the main casing 41 by an inner frame 48.

[0026] As shown in Figures 2 and 3, a drive wheel 431 is mounted on the output shaft of the motor 43, and an outer peripheral tooth portion 444 that meshes with the drive wheel 431 is mounted on the outer wall of the rotating disk 44.

[0027] As shown in Figures 2 and 3, a first connection port 445 for attaching the first air pipe 45 is provided in the center of the rotating disk 44, and a second connection port 446 and a third connection port 447 for attaching the second air pipe 46 and the third air pipe 47 are provided next to the first connection port 445.

[0028] As shown in Figures 2 to 7, the specific operation method of the intake and exhaust device 4 is described below.

[0029] A push button 416 is installed on the top cover 417 of the main casing 41. When the push button 416 is pressed twice, the intake and exhaust device 4 enters a circulating operation mode and repeatedly operates in the order of supplying air → exhausting air → supplying air → exhausting air, circulating continuously for 12 minutes. Also, when the push button 416 is pressed and held, the intake and exhaust device 4 continuously supplies air.

[0030] Under exhaust conditions, the motor 43 rotates forward, causing the rotating disk 44 to rotate and enabling the switching of connections between each air pipe. Specifically, as shown in Figures 4 and 5, one end of the first air pipe 45 communicates with the first vent 413, and the other end communicates with the first chamber 401. One end of the second air pipe 46 communicates with the exhaust port of the air pump 42, and the other end communicates with the second chamber 402. One end of the third air pipe 47 communicates with the intake port of the air pump 42, and the other end communicates with the first chamber 401. When the air pump 42 is started, outside air flows from the first vent 413 through the first air pipe 45 into the first chamber 401, and is also drawn into the air pump 42 through the third air pipe 47 under the pressure of the air pump 42, and then sent into the second chamber 402 through the second air pipe 46. Finally, water is blown from the second vent 414 into the upper inner cup 1 and the lower inner cup 2, thereby enabling the process of water being discharged from the upper inner cup 1 and the lower inner cup 2 into the liquid storage space 30.

[0031] Under intake conditions, the motor 43 reverses direction, causing the rotating disk 44 to rotate and enabling the switching of connections between each air pipe. Specifically, as shown in Figures 6 and 7, one end of the first air pipe 45 communicates with the first vent 413, and the other end communicates with the first chamber 401. One end of the second air pipe 46 communicates with the exhaust port of the air pump 42, and the other end communicates with the first chamber 401. One end of the third air pipe 47 communicates with the intake port of the air pump 42, and the other end communicates with the third chamber 403. When the air pump 42 is started, the air in the upper inner cup 1 and the lower inner cup 2 enters the third chamber 403 through the third vent 415, is drawn into the air pump 42 via the third air pipe 47, and is then sent into the first chamber 401 via the second air pipe 46. Finally, the water is discharged into the outside air through the first air pipe 45 and the first vent 413, thereby enabling the water to be drawn up from the liquid containment space 30 into the upper inner cup 1 and the lower inner cup 2.

[0032] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-essential modifications made using the concept of the present invention shall be deemed to infringe upon the scope of protection of the present invention. [Explanation of Symbols]

[0033] 1 Upper inner cup 2 Lower inner cup 3 Outer cup 30 Liquid containment space 4. Intake and exhaust system 41 Main casing 401 First Chamber 402 Second Chamber 403 Third Chamber 405 First seal ring 406 Second seal ring 407 Third seal ring 408 First ring-shaped protrusion 409 Second ring-shaped protrusion 410 Third ring-shaped protrusion 413 First ventilation opening 414 Second ventilation opening 415 Third ventilation opening 416 Push Button 417 Top Cover 42 Air pump 43 Motor 431 Drive wheels 44 RPM disc 440 Escape groove 441 Annular recess 442 Arc-shaped protrusion 443 Positioning protrusion 444 Peripheral tooth region 445 First connection port 446 Second connection port 447 Third Connection Port 45. First air pipe 46. ​​Second air pipe 47 Third air pipe 48 Inner frame 481 Mounting part 482 Arc-shaped positioning block 49 Batteries

Claims

1. An intake and exhaust device comprising a main casing, and an air pump, motor, rotating disk, first air pipe, second air pipe, and third air pipe installed within the main casing, The rotating disk is driven and connected to the motor, and a first chamber, a second chamber, and a third chamber, independent of each other, are installed between the rotating disk and the main casing, a first vent is installed in the side wall of the main casing, a second vent is installed at the bottom of the second chamber, and a third vent is installed at the bottom of the third chamber. One end of the first air pipe is connected to the first vent, and the other end is connected to the first chamber via the rotating disk. One end of the second air pipe is connected to the exhaust port of the air pump, and the other end is connected to the second chamber or the first chamber via the rotating disk. One end of the third air pipe communicates with the air intake of the air pump, and the other end communicates with the first chamber or the third chamber via the rotating disk. Characterized by, Intake and exhaust system.

2. Mounting grooves are provided in the main casing, a first seal ring is fitted to the outer periphery of the mounting grooves, a second vent and a third vent are provided inside the mounting grooves, and a second seal ring and a third seal ring are provided on the outer periphery of the second vent and the third vent, respectively. The bottom of the rotating disk abuts against the first seal ring, the second seal ring, and the third seal ring, respectively, thereby dividing the mounting groove into the first chamber, the second chamber, and the third chamber. Characterized by, The intake and exhaust device according to claim 1.

3. The main casing is provided with a first annular projection, the mounting groove is formed inside the first annular projection, and the rotating disk is provided with a relief groove at a position corresponding to the mounting groove. The first seal ring abuts against the outer edge of the relief groove, and the second seal ring and the third seal ring abut within the relief groove. Characterized by, The intake and exhaust device according to claim 2.

4. An annular step is provided on the first annular protrusion, an annular recess is provided on the bottom of the rotating disk, and the first seal ring is fitted between the annular step and the annular recess. Characterized by, The intake and exhaust device according to claim 3.

5. A second annular projection and a third annular projection are provided within the mounting groove, and a second ventilation opening and a third ventilation opening are provided within the second annular projection and the third annular projection, respectively, and a second groove and a third groove for mounting the second seal ring and the third seal ring are provided. Characterized by, The intake and exhaust device according to claim 2.

6. The upper end surface of the rotating disk is provided with an arc-shaped projection, and positioning projections are provided at both ends of the arc-shaped projection. Furthermore, the main body casing has an inner frame installed within it, and the inner frame is provided with a mounting portion for attaching the rotating disk and an arc-shaped positioning block that abuts against the positioning projections. Characterized by, The intake and exhaust device according to claim 1.

7. A drive wheel is installed on the output shaft of the motor, and an outer tooth portion that meshes with the drive wheel is installed on the outer wall of the rotating disk. Characterized by, The intake and exhaust device according to claim 1.

8. The rotating disk has a first connection port for attaching the first air pipe, and a second connection port and a third connection port for attaching the second air pipe and the third air pipe are provided to the side of the first connection port. Characterized by, The intake and exhaust device according to claim 1.

9. A cold brew coffee machine having an upper inner cup, a lower inner cup, and an outer cup, wherein the intake and exhaust device described in any one of claims 1 to 8 is installed at the upper end of the upper inner cup. Characterized by, Cold brew coffee machine.

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