Piston water pump for handheld coffee machine

Abstract

The utility model discloses a piston water pump for a handheld coffee machine, which relates to the technical field of coffee machines and is characterized in that two oppositely fixed one-way valves are opened and closed at high frequency through reciprocating of leather cups, and the other one-way valve is closed while one one-way valve is opened. According to the coffee machine, one-way circulation of the gas path between the gas storage space and the outside and between the gas path between the gas storage space and the closed cavity and between the gas path between the gas path between the gas storage space and the water storage space and between the gas path between the gas path between the gas storage space and the closed cavity and between the gas path between the water storage space and the closed cavity is achieved; the water inlet and outlet nozzle on the line cavity cover can conduct water inlet and water outlet according to the set rhythm, so that the brewing process of coffee is completed, a high-frequency switch enables a gas path or a liquid path to rapidly achieve one-way circulation, the working efficiency and the circulation speed of the water inlet and outlet nozzle are improved, the consistency of the brewing quality and the taste of the coffee is guaranteed, and the service life of the coffee is prolonged. The volume and the weight of the coffee machine are reduced, and the portability is improved.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, specifically a piston water pump for a handheld coffee machine. Background Technology

[0002] Handheld coffee machines, also known as portable coffee machines, have become a "mobile coffee station" for coffee lovers when they are out and about, thanks to their compact size and professional extraction capabilities. The original design intention of handheld coffee machines is to break the limitations of the scene and realize the freedom of "freshly ground espresso anytime, anywhere". Through manual pressure or electric drive, they provide 9-15 bar high pressure (close to the standard of professional espresso machines) to extract rich oils and aroma, making it easy to quickly make espresso in the morning and replace instant drinks.

[0003] Existing handheld coffee machines cannot precisely control the water inlet and outlet flow of the spout, nor can they achieve water circulation between the spout and outlet. This results in inconsistent contact time between coffee grounds and water, leading to over- or under-extraction, and a bitter or weak coffee taste. Unstable water flow can cause water temperature fluctuations; if the water volume is too low, the water will heat up too quickly, ruining the coffee flavor. Users will find it difficult to reproduce the ideal concentration, affecting personalized needs. Unidirectional water flow cannot maintain a stable water temperature through circulation; a sudden drop in temperature will cause a prominent acidity, while a sudden rise will result in a noticeable burnt and bitter taste. Utility Model Content

[0004] This invention provides a piston water pump for a handheld coffee machine, which has the advantage that the piston water pump of the handheld coffee machine enables the inlet and outlet nozzles to carry water in and out at a set rhythm and to work in a cycle, thereby solving the problem that the piston water pump of the handheld coffee machine cannot achieve a cycle of water in and out of the inlet and outlet nozzles.

[0005] To achieve the goal of enabling the inlet and outlet nozzles of a handheld coffee machine to perform water intake and output at a set rhythm and to circulate the water intake and output, this utility model provides the following technical solution: A piston water pump for a handheld coffee machine, including a motor, a support base mounted on the top surface of the motor, a soundproof cover mounted on the outer surface of the support base, a transmission reciprocating assembly mounted inside the motor, a cavity cover mounted on the outer surface of the support base, a pressure cap mounted on the outer surface of the cavity cover, a sealed cavity formed between the cavity cover and the support base, and an air storage space formed between the cavity cover and the pressure cap.

[0006] As a preferred embodiment of this utility model, the reciprocating transmission assembly includes a connecting rod and an eccentric wheel. The eccentric wheel is mounted on the outer surface of the motor output shaft, and the connecting rod is movably mounted on the outer surface of the eccentric wheel.

[0007] As a preferred embodiment of this utility model, a ball bearing is movably installed inside the soundproof cover, and the inside of the ball bearing is in movable contact with the outer surface of the motor output shaft.

[0008] As a preferred embodiment of this utility model, the connecting rod is internally engaged with a screw post, a cup is installed on one end of the screw post, and two one-way valves are installed on the outer surface of the cup, with the two one-way valves facing each other.

[0009] As a preferred embodiment of this utility model, a valve plate is installed inside the pressure cap.

[0010] Compared with the prior art, this utility model provides a piston water pump for a handheld coffee machine, which has the following beneficial effects:

[0011] This piston water pump for handheld coffee machines uses a reciprocating piston cup to rapidly open and close two fixed one-way valves. Opening one valve simultaneously closes the other, enabling unidirectional airflow between the gas storage space and the external gas, as well as the gas within the sealed cavity. This allows for the continuous circulation of water into and out of the spouts on the lid. The high-frequency switching ensures rapid unidirectional airflow, improving the efficiency and circulation speed of the spouts and contributing to consistent brewing quality and taste. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the reciprocating transmission assembly of this utility model;

[0014] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the external structure of the cavity cover of this utility model.

[0016] In the diagram: 1. Motor; 2. Bracket base; 3. Connecting rod; 4. Eccentric wheel; 5. Ball bearing; 6. Soundproof cover; 7. Leather cup; 8. Screw post; 9. One-way valve; 10. Cavity cover; 11. Valve plate; 12. Pressure cap; 13. Gas storage space; 14. Sealed cavity. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 This utility model discloses a piston water pump for a handheld coffee machine, including a motor 1, a support base 2 mounted on the top surface of the motor 1, a soundproof cover 6 mounted on the outer surface of the support base 2, a transmission reciprocating assembly installed inside the motor 1, a cavity cover 10 mounted on the outer surface of the support base 2, a pressure cap 12 mounted on the outer surface of the cavity cover 10, forming a sealed cavity 14 between the cavity cover 10 and the support base 2, and forming an air storage space 13 between the cavity cover 10 and the pressure cap 12. The reciprocating motion of the cup 7 causes two oppositely fixed one-way valves 9 to open and close at a rapid frequency. By opening one check valve 9 and closing the other check valve 9 simultaneously, the gas path achieves unidirectional flow between the gas storage space 13 and the external gas and the gas inside the sealed cavity 14, thereby enabling the water inlet and outlet of the water inlet / outlet on the cavity cover 10 to circulate. Through the reciprocating motion of the piston cup 7 and the alternating opening and closing of the check valves 9, the coffee machine achieves unidirectional flow of gas or liquid between the gas storage space 13 or water storage space and the external environment and the sealed cavity 14, allowing the water inlet / outlet on the cavity cover 10 to inlet and outlet water according to a set rhythm, thus completing the coffee brewing process. Due to the drive and deflection of the motor 1, The transmission of the heart wheel 4 and connecting rod 3 enables the piston cup 7 to reciprocate rapidly, thereby driving the one-way valve 9 to open and close at a high frequency. This high-frequency switching allows for rapid one-way flow in either the air or liquid path, improving the efficiency and circulation speed of the inlet and outlet nozzles. Through precise control by the controller, the speed of the motor 1 and the amplitude of the piston cup 7's reciprocating motion can be adjusted, thus achieving precise control over the water flow rate at the inlet and outlet nozzles. This helps ensure consistent brewing quality and taste of the coffee. The entire coffee machine's working principle is based on a series of mechanical transmissions and valve controls; these components can... The relatively compact integration within the coffee machine helps reduce its size and weight, improving portability and usability. The leather cup 7 is equipped with screw posts 8, facilitating its installation and removal. When maintenance or replacement of the leather cup 7 is required, the operator can quickly complete the relevant work, improving the maintainability and lifespan of the coffee machine. Furthermore, the use of mechanical transmission and simple valve control principles ensures high reliability during operation. As long as the normal operation and lubrication of each component are guaranteed, the coffee machine can work stably, providing users with a continuous coffee brewing service.

[0019] The reciprocating transmission assembly includes a connecting rod 3 and an eccentric wheel 4. The eccentric wheel 4 is mounted on the outer surface of the output shaft of the motor 1. The connecting rod 3 is movably mounted on the outer surface of the eccentric wheel 4. A ball bearing 5 is movably mounted inside the soundproof cover 6. The inside of the ball bearing 5 is in contact with the outer surface of the output shaft of the motor 1. A screw post 8 is movably engaged inside the connecting rod 3. A cup 7 is mounted on one end of the screw post 8. Two one-way valves 9 are mounted on the outer surface of the cup 7. The two one-way valves 9 are installed facing each other. A valve plate 11 is installed inside the pressure cover 12. The motor 1 drives the eccentric wheel 4 to rotate. The eccentric wheel 4 is adjusted to rotate the connecting rod 3. The screw post 8 is mounted on the cup 7 to facilitate the installation of the cup 7. Thus, the cup 7 assembled on the connecting rod 3 reciprocates in the sealed cavity 14 of the bracket base 2 and the cavity cover 10.

[0020] The working principle and usage process of this utility model are as follows: When the coffee machine needs to be used, the controller controls the motor 1 to work. The motor 1 drives the eccentric wheel 4 to rotate. The eccentric wheel 4 is adjusted to rotate the connecting rod 3. The cup 7 is equipped with a screw post 8 for easy installation. This causes the cup 7 mounted on the connecting rod 3 to reciprocate within the sealed cavity 14 of the bracket base 2 and the cavity cover 10. The reciprocating motion of the cup 7 causes two oppositely fixed one-way valves 9 to open and close at a rapid frequency. Opening one one-way valve 9 simultaneously closes the other one-way valve 9. This allows for unidirectional airflow between the gas storage space 13 and the external gas, as well as the gas inside the sealed cavity 14, thereby enabling the water inlet and outlet of the cup lid 10 to circulate. Through the reciprocating motion of the cup 7 and the alternating opening and closing of the one-way valve 9, the coffee machine achieves unidirectional airflow or liquid flow between the gas storage space 13 or water storage space and the external environment, as well as the sealed cavity 14. This allows the water inlet and outlet on the cup lid 10 to flow water according to a set rhythm, thus completing the coffee brewing process. Driven by the motor 1 and transmitted by the eccentric wheel 4 and connecting rod 3, the cup... Motor 1 (7) can perform rapid reciprocating motion, thereby driving the one-way valve 9 to open and close at a high frequency. The high-frequency switching allows the air or liquid path to quickly achieve one-way flow, improving the working efficiency and circulation speed of the inlet and outlet nozzles. Through the precise control of the controller, the speed of motor 1 and the reciprocating motion amplitude of the cup 7 can be adjusted, thereby achieving precise control of the water volume entering and leaving the inlet and outlet nozzles. This helps to ensure the consistency of coffee brewing quality and taste. The working principle of the entire coffee machine is based on a series of mechanical transmissions and valve controls. These components can be relatively compactly integrated inside the coffee machine, which helps to reduce the size and weight of the coffee machine and improve portability and applicability. The cup 7 is equipped with screw posts 8, which facilitates the installation and removal of the cup 7. When maintenance or replacement of the cup 7 is required, the operator can quickly complete the relevant work, improving the maintainability and service life of the coffee machine. Moreover, by adopting mechanical transmission and simple valve control principles, the coffee machine has high reliability during operation. As long as the normal operation and lubrication of each component are ensured, the coffee machine can work stably and provide users with continuous coffee brewing service.

[0021] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A piston water pump for a hand-held coffee machine, comprising a motor (1), characterized in that: The top surface of the motor (1) is provided with a bracket base (2), the outer surface of the bracket base (2) is provided with a sound insulation cover (6), the inside of the motor (1) is provided with a transmission reciprocating assembly, the outer surface of the bracket base (2) is provided with a row cavity cover (10), the outer surface of the row cavity cover (10) is provided with a gland (12), a closed cavity (14) is formed between the row cavity cover (10) and the bracket base (2), and a gas storage space (13) is formed between the row cavity cover (10) and the gland (12).

2. A piston water pump for a hand-held coffee maker according to claim 1, characterized in that: The transmission reciprocating assembly comprises a connecting rod (3) and an eccentric wheel (4), the eccentric wheel (4) is installed on the outer surface of the output shaft of the motor (1), and the connecting rod (3) is movably installed on the outer surface of the eccentric wheel (4).

3. A piston water pump for a hand coffee maker according to claim 2, characterized in that: The inside of the sound insulation cover (6) is movably provided with a ball bearing (5), and the inside of the ball bearing (5) is movably in contact with the outer surface of the output shaft of the motor (1).

4. A piston water pump for a hand coffee maker according to claim 3, characterized in that: The inside of the connecting rod (3) is movably provided with a screw column (8), one end surface of the screw column (8) is provided with a leather cup (7), the outer surface of the leather cup (7) is provided with two one-way valves (9), and the two one-way valves (9) are oppositely installed.

5. A piston water pump for a hand coffee maker according to claim 4, characterized in that: The inside of the gland (12) is provided with a valve plate (11).

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