Water process control mechanism of intelligent hand coffee machine

Abstract

The utility model provides a kind of water technology control mechanism of intelligent hand coffee machine, comprising: outlet water pump, heating module, circulating water pump, three-way electromagnetic valve and heat preservation water tank, wherein, the water outlet of circulating water pump is connected with the water inlet of heating module by pipeline, the water outlet of heating module is connected with the hot water interface of heat preservation water tank, the water outlet of heat preservation water tank is connected with the water inlet of outlet water pump by pipeline, three-way electromagnetic valve first interface is connected with external water inlet interface, three-way electromagnetic valve second interface is connected with heat preservation water tank bottom water outlet interface, three-way electromagnetic valve third interface is connected with the water inlet of circulating water pump, and the water outlet interface of outlet water pump is connected outward by pipeline.The water technology control mechanism is simple in structure, reasonable in design, can realize the accurate control to the water temperature of brewing coffee, improve the heating efficiency of brewing water, and ensure the temperature constant when single water outlet.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, specifically to a water process control mechanism for an intelligent pour-over coffee machine. Background Technology

[0002] Coffee is a beverage made from roasted and ground coffee beans. A coffee machine automates the coffee-making process by incorporating electronic technology. In current technology, the water heating process in a coffee machine involves the machine controlling a heating element to heat the water. The water temperature during coffee extraction is typically between 85-95 degrees Celsius, and some machines even have an initial temperature setting that leans towards 92-96 degrees Celsius. This is because water temperature directly affects the extraction rate of different components in the coffee, thus influencing the flavor profile. Therefore, the water process control mechanism is a core component of the coffee machine.

[0003] In existing methods of making superheated coffee, the water temperature in the tank is low due to the low temperature of the water. The water temperature needs to be raised from a lower temperature to room temperature, and then from room temperature to a higher temperature. This process takes a long time compared to the time required to change the water temperature from room temperature to hot water, resulting in a longer waiting time for continuous coffee making and reducing efficiency. Therefore, how to precisely control the water temperature, improve the heating efficiency of the brewing water, and ensure a constant temperature for each batch of water is a technical problem that needs to be solved in this field. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a water process control mechanism for an intelligent pour-over coffee machine, which can achieve precise control of the brewing water temperature, improve the heating efficiency of the brewing water, and ensure a constant temperature during each dispensing.

[0005] To achieve the above technical solution, this utility model provides a water process control mechanism for an intelligent pour-over coffee machine, including: a water pump, a heating module, a circulating water pump, a three-way solenoid valve, and an insulated water tank. The outlet of the circulating water pump is connected to the inlet of the heating module via a pipe. The outlet of the heating module is connected to the hot water interface of the insulated water tank. The outlet of the insulated water tank is connected to the inlet of the water pump via a pipe. The first port of the three-way solenoid valve is connected to an external water inlet. The second port of the three-way solenoid valve is connected to the outlet port at the bottom of the insulated water tank. The third port of the three-way solenoid valve is connected to the inlet of the circulating water pump. The outlet port of the water pump is connected externally via a pipe.

[0006] In the above technical solution, during actual operation, the circulating water pump is used to circulate and heat the water in the insulated water tank. The three-way solenoid valve can input water from the external water inlet or the insulated water tank into the circulating water pump, which then delivers it to the heating module for precise heating. The water in the insulated water tank can be delivered to the water injection pipe in the brewing actuator via the outlet water pump for external water injection. Because of the insulated water tank, the water temperature can be kept relatively constant. Furthermore, by using the circulating water pump, once the water temperature drops, the hot water in the insulated water tank can be quickly heated by the heating module and then returned to the insulated water tank, thus improving the heating efficiency of the brewing water. Additionally, the outlet water pump ensures that the temperature of the constant-temperature hot water from the insulated water tank remains constant during each dispensing, thereby improving the quality of the dispensed water.

[0007] Preferably, the insulated water tank is equipped with a high-level float switch and a low-level float switch. In actual operation, the high-level and low-level float switches are used to maintain a stable water level in the insulated water tank. When the water level in the insulated water tank is higher than the set level, the high-level float switch activates, cutting off the water flow to prevent the water level from becoming too high. When the water level in the insulated water tank is lower than the set level, the low-level float switch activates, cutting off the water flow to prevent the water level from becoming too low.

[0008] Preferably, the insulated water tank has a steam outlet at the top, which is connected to a steam outlet installed at the bottom of the frame via a pipe. The steam outlet is used to discharge the steam accumulated inside the insulated water tank.

[0009] Preferably, the bottom of the insulated water tank is provided with a drain port, which is used to drain the insulated water tank when cleaning it.

[0010] Preferably, an outlet flow meter is installed on the pipe connecting the outlet of the insulated water tank and the inlet of the water pump, and an inlet flow meter is installed on the pipe connecting the first port of the three-way solenoid valve and the external water inlet. In actual operation, the outlet and inlet flow meters can accurately measure the outflow and inflow of water.

[0011] Preferably, a water outlet temperature sensor is installed at the water outlet of the heating module, and a water inlet temperature sensor is installed at the water inlet of the heating module, so as to better control the heating temperature of the heating module.

[0012] Preferably, a control circuit board is also installed on one side of the insulated water tank. The control circuit board is electrically connected to the outlet water pump, heating module, circulating water pump, three-way solenoid valve, and insulated water tank. In actual operation, the control circuit board can realize the water circulation in the insulated water tank, ensuring that the liquid temperature in the tank is uniform and reaches the target set value.

[0013] The beneficial effects of the water process control mechanism for an intelligent pour-over coffee machine provided by this utility model are as follows: This water process control mechanism has a simple structure and reasonable design, enabling precise control of the brewing water temperature and improving the heating efficiency of the brewing water, ensuring a constant temperature during each dispensing. In actual operation, a circulating water pump is used to circulate and heat the water in the insulated water tank. A three-way solenoid valve allows water from the external water inlet or the insulated water tank to be input into the circulating water pump, which then delivers it to the heating module for precise heating. Water in the insulated water tank can be pumped to the water inlet pipe in the brewing actuator via the outlet water pump. Because of the insulated water tank, the water temperature is kept relatively constant. Furthermore, by using a circulating water pump, once the water temperature drops, the hot water in the insulated water tank can be quickly heated by the circulating water pump and then returned to the insulated water tank, thus improving the heating efficiency of the brewing water. The outlet water pump also ensures that the constant temperature of the hot water in the insulated water tank is maintained during each dispensing, thereby improving the quality of the dispensed water. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the pipe connection structure of this utility model.

[0015] In the diagram: 1. Water outlet; 2. Water pump; 3. Hot water outlet; 4. Heating module outlet temperature sensor; 5. Heating module; 6. Heating module inlet temperature sensor; 7. Circulating water pump; 8. Drainage outlet; 9. Steam outlet; 10. External water inlet; 11. Inlet flow meter; 12. Three-way solenoid valve first interface; 13. Three-way solenoid valve second interface; 14. Three-way solenoid valve; 15. Bottom outlet of the insulated water tank; 16. Internal temperature sensor of the insulated water tank; 17. Insulated water tank; 18. Steam outlet of the insulated water tank; 19. Water outlet of the insulated water tank; 20. High water level float switch of the insulated water tank; 21. Low water level float switch of the insulated water tank; 22. Outlet flow meter; 23. Control circuit board; 24. Three-way solenoid valve third interface. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: A water process control mechanism for an intelligent pour-over coffee machine.

[0018] Reference Figure 1 As shown, a water process control mechanism for an intelligent pour-over coffee machine includes: a water pump 2, a heating module 5, a circulating water pump 7, a three-way solenoid valve 14, and an insulated water tank 17. The water outlet 1 of the water pump 2 is connected to the water injection pipe in the brewing actuator via a silicone hose. The outlet of the circulating water pump 7 is connected to the inlet of the heating module 5 via a pipe. The outlet of the heating module 5 is connected to the hot water interface 3 of the insulated water tank 17. The outlet of the insulated water tank 17 is connected to the inlet of the water pump 2 via a pipe. The first interface 12 of the three-way solenoid valve is connected to the external water inlet 10. The second interface 13 of the three-way solenoid valve is connected to the bottom outlet 15 of the insulated water tank. The third interface 24 of the three-way solenoid valve is connected to the inlet of the circulating water pump 7. In actual operation, the circulating water pump 7 is used to circulate and heat the water in the insulated water tank 17. The three-way solenoid valve 14 can input water from the external water inlet 10 or the insulated water tank 17 into the circulating water pump 7, and then deliver it to the heating module 5 for precise heating through the circulating water pump 7. The water in the insulated water tank 17 can be delivered to the water injection pipe in the boiling actuator through the water outlet pump 2 to inject water externally.

[0019] Reference Figure 1 As shown, the insulated water tank 17 is equipped with a high water level float switch 20 and a low water level float switch 21. The top of the insulated water tank 17 is equipped with a steam outlet 18, which is connected to a steam outlet 9 installed at the bottom of the frame via a pipe. The bottom of the insulated water tank 17 is equipped with a drain interface 8. The high-level float switch 20 and the low-level float switch 21 of the insulated water tank are used to maintain a stable water level in the insulated water tank 17. When the water level in the insulated water tank 17 is higher than the set water level, the high-level float switch 20 is activated to cut off the water flow and prevent the water level in the insulated water tank 17 from being too high. When the water level in the insulated water tank 17 is lower than the set water level, the low-level float switch 21 is activated to cut off the water flow and prevent the water level in the insulated water tank 17 from being too low. The steam outlet 18 of the insulated water tank is used to discharge the steam accumulated in the insulated water tank 17, and the drain port 8 is used to empty the insulated water tank 17 when cleaning it.

[0020] Reference Figure 1As shown, an outlet flow meter 22 is installed on the pipe connecting the outlet 19 of the insulated water tank and the inlet of the water pump 2, and an inlet flow meter 11 is installed on the pipe connecting the first port 12 of the three-way solenoid valve and the external inlet port 10. In actual operation, the outlet and inlet flow meters 22 and 11 can accurately measure the outflow and inflow of water. A heating module outlet temperature sensor 4 is installed at the outlet of the heating module 5, and a heating module inlet temperature sensor 6 is installed at the inlet of the heating module 5 to better control the heating temperature of the heating module 5. An internal temperature sensor 16 is installed inside the insulated water tank 17 to monitor the water temperature inside the insulated water tank 17 in real time. The control circuit board 23 is mounted on the frame and is electrically connected to the water pump 2, the heating module 5, the circulating water pump 7, the three-way solenoid valve 14 and the insulated water tank 17 respectively. In actual operation, the water flow in the insulated water tank 17 can be circulated through the control circuit board 23 to ensure that the liquid temperature in the tank is uniform and reaches the target set value.

[0021] The working principle of this utility model is as follows:

[0022] 1) When the three-way solenoid valve 14 is turned on, the first port 12 and the third port 24 of the three-way solenoid valve are directly connected. At this time, the second port 13 and the outlet of the solenoid valve are in the closed state. The circulating water pump 7 starts to work, drawing external water from the external water inlet port 10, and preheating it through the heating module 5.

[0023] 2) The control circuit board 23 monitors the status of the high water level float switch 20 of the insulated water tank. When the switch is turned on, that is, when the water level reaches the high water level line, the three-way solenoid valve 14 is turned off, so that the second port 13 of the three-way solenoid valve is connected to the water outlet of the solenoid valve, and the first port 12 of the three-way solenoid valve is cut off from the third port 24 of the three-way solenoid valve.

[0024] 3) At this time, the circulating water pump 7 is still in operation. Since the hot water interface 3 of the heating module 5 is located at the upper left corner of the insulated water tank 17, and the bottom outlet of the insulated water tank 17 is located at the lower right corner, a circulating water flow is formed in the insulated water tank 17. After continuous circulation, the temperature of the liquid in the insulated water tank 17 is uniform throughout, which can be accurately detected by the internal temperature sensor 16 of the insulated water tank.

[0025] 4) When the insulated water tank 17 is in a water circulation state, the heating module 5 is controlled by PID to make the temperature inside the insulated water tank 17 reach the target set value. The inlet water temperature sensor 6 and the outlet water temperature sensor 4 of the heating module are used as reference compensation (the ambient temperature may cause the pipe circulation process to cool down).

[0026] 5) When the insulated water tank 17 is at a low water level, the control circuit board 23 controls the water pump 2 to stop. At this time, the cycle of steps 1 to 4 is performed to ensure the water level and temperature of the insulated water tank 17.

[0027] 6) When the target temperature is lower than the real-time temperature of the insulated water tank 17, water is injected to mix with the hot water in the insulated water tank 17 to lower its temperature. (The water tank is designed with a large margin, so the mixing of hot and cold water will not overflow the tank.) After mixing, the water circulation is continued to make the water temperature in the insulated water tank 17 uniform before heating to the target temperature.

[0028] The water process control mechanism provided by this utility model has a simple structure and reasonable design, which can achieve precise control of the water temperature for brewing coffee and improve the heating efficiency of the brewing water, ensuring a constant temperature during each water dispensing. In actual operation, the circulating water pump 7 is used to circulate and heat the water in the insulated water tank 17. The three-way solenoid valve 14 can input water from the external water inlet or the insulated water tank 17 into the circulating water pump 7, and then deliver it to the heating module 5 for precise heating through the circulating water pump 7. The water in the insulated water tank 17 can be delivered to the water injection pipe in the brewing actuator through the water outlet pump 2 for external water injection. Because of the insulated water tank 17, the water temperature can be kept basically constant. And because of the circulating water pump 7, once the water temperature drops, the hot water in the insulated water tank 17 can be transported to the heating module 5 for rapid heating and then transported back to the insulated water tank 17. Therefore, the heating efficiency of the brewing water can be improved. And because of the outlet water pump 2, the temperature of the constant-temperature hot water in the insulated water tank 17 is kept constant when it is dispensed, thereby improving the quality of the dispensed water.

[0029] This water process control mechanism uses a circulating water pump 7 to ensure rapid water flow within the insulated water tank 17, resulting in uniform water temperature throughout the tank and more accurate temperature measurements. Furthermore, the heating module 5 is equipped with inlet and outlet water temperature sensors. When the heating module 5 is not operating (not in heating mode), these sensors, in conjunction with the internal temperature sensor 16 of the insulated water tank, can detect how much the temperature inside the insulated water tank 17 might drop after passing through the pipes (generally 0.1~1℃, affected by the external ambient temperature). This allows for compensation of the insulated water tank 17 temperature, facilitating precise control of the output water temperature.

[0030] This water process control mechanism ensures that the water temperature in the insulated water tank 17 is uniform and constant, which is more precise than traditional pour-over coffee equipment and pour-over coffee pots used by professionals. At the same time, it effectively compensates for the influence of ambient temperature, so that the temperature is more accurate when the water comes into contact with the coffee grounds, thus improving the pour-over extraction rate.

[0031] The above description is only a preferred embodiment of the present utility model. However, the present utility model should not be limited to the content disclosed in the embodiment and the accompanying drawings. Therefore, any equivalent or modified embodiments made without departing from the spirit disclosed in the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A water process control mechanism for an intelligent hand coffee maker, characterized by include: The system includes a water pump, a heating module, a circulating water pump, a three-way solenoid valve, and an insulated water tank. The outlet of the circulating water pump is connected to the inlet of the heating module via a pipe. The outlet of the heating module is connected to the hot water interface of the insulated water tank. The outlet of the insulated water tank is connected to the inlet of the water pump via a pipe. The first port of the three-way solenoid valve is connected to the external water inlet. The second port of the three-way solenoid valve is connected to the outlet port at the bottom of the insulated water tank. The third port of the three-way solenoid valve is connected to the inlet of the circulating water pump. The outlet port of the water pump is connected to the outside via a pipe.

2. The water process control mechanism of an intelligent hand coffee maker according to claim 1, characterized in that: The insulated water tank is equipped with a high water level float switch and a low water level float switch.

3. The water process control mechanism of an intelligent hand coffee maker according to claim 1, wherein: The top of the insulated water tank is equipped with a steam outlet, which is connected to a steam outlet installed at the bottom of the frame via a pipe.

4. The water process control mechanism of an intelligent pour-over coffee machine as described in claim 1, characterized in that: The insulated water tank is equipped with a drain port at the bottom.

5. The water process control mechanism of an intelligent hand coffee maker according to claim 1, wherein: A flow meter is installed on the pipe connecting the outlet of the insulated water tank and the inlet of the water pump, and an inlet flow meter is installed on the pipe connecting the first port of the three-way solenoid valve and the external inlet port.

6. The water process control mechanism of an intelligent hand coffee maker according to claim 1, wherein: A water outlet temperature sensor is installed at the outlet of the heating module, and a water inlet temperature sensor is installed at the inlet of the heating module.

7. The water process control mechanism of an intelligent hand coffee maker according to claim 1, wherein: A control circuit board is also installed on one side of the insulated water tank. The control circuit board is electrically connected to the outlet water pump, the heating module, the circulating water pump, the three-way solenoid valve and the insulated water tank.

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