Extraction pressure and flow control device, method, electronic equipment, and storage medium

Abstract

This application provides a control device, method, electronic device, and storage medium for extraction pressure and flow rate, including: a first end of a first electromagnetic pump and a first end of a second electromagnetic pump are both connected to a first end of a flow meter; a second end of the flow meter is connected to a water tank; and the second ends of the first and second electromagnetic pumps are both connected to a first end of a heating boiler module. A water delivery pipe between the second ends of the first and second electromagnetic pumps and the first end of the heating boiler module is connected to the first ends of a first and second pinhole pressure relief valve module, respectively; the second ends of both the first and second pinhole pressure relief valve modules are connected to the water tank. The second end of the heating boiler module is connected to the first end of an extraction solenoid valve, and the second end of the extraction solenoid valve is connected to an extraction head. An extraction pressure sensor is installed between the extraction solenoid valve and the extraction head to ensure sufficient flow rate and water flow for effective and stable coffee extraction.

Description

Technical Field

[0001] This application relates to the field of coffee machine technology, and in particular to control devices, methods, electronic devices and storage media for extraction pressure and flow. Background Technology

[0002] A good cup of coffee requires achieving the right level of extraction, extracting only the desired components while extracting too much or too little of unwanted substances, thus ensuring a balanced and delicious taste. During the extraction process, increasing pressure increases extraction, while decreasing pressure decreases it. Many espresso machines on the market utilize variable pressure extraction, primarily employing rotary or wheel pumps to adjust pump speed and thus flow rate and pressure. Some use vibratory pumps, but vibratory pumps mainly change the pump's Hertz frequency or cut off the Hertz band, altering the piston frequency and speed, reducing the amount and rate of water entering the pipe, and thus changing the internal pressure. However, this alteration can result in inconsistent flow rate and volume, hindering effective and stable extraction. Therefore, ensuring sufficient flow rate and water volume for stable extraction has become a significant technical challenge. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide an extraction pressure and flow rate control device, method, electronic device and storage medium. The extraction pressure and flow rate control device enables the use of two electromagnetic pumps to provide effective and continuous output to ensure water flow and prevents water flow from becoming unstable due to power changes caused by pressure adjustment of a single electromagnetic pump, thereby ensuring sufficient flow rate and water flow for effective and stable coffee extraction.

[0004] This application provides an extraction pressure and flow rate control device, which includes a first electromagnetic pump, a second electromagnetic pump, a water tank, a flow meter, a heating boiler module, a first pinhole pressure relief valve module, a second pinhole pressure relief valve module, an extraction solenoid valve, an extraction pressure sensor, and an extraction head; wherein...

[0005] The first end of the first electromagnetic pump and the first end of the second electromagnetic pump are both connected to the first end of the flow meter, the second end of the flow meter is connected to the water tank, and the second end of the first electromagnetic pump and the second end of the second electromagnetic pump are both connected to the first end of the heating boiler module.

[0006] The water delivery pipe between the second end of the first electromagnetic pump, the second end of the second electromagnetic pump and the first end of the heating boiler module is respectively connected to the first end of the first pinhole pressure relief valve module and the first end of the second pinhole pressure relief valve module. The second end of the first pinhole pressure relief valve module and the second end of the second pinhole pressure relief valve module are both connected to the water tank.

[0007] The second end of the heating boiler module is connected to the first end of the extraction solenoid valve, and the second end of the extraction solenoid valve is connected to the extraction head. An extraction pressure sensor is installed between the extraction solenoid valve and the extraction head. The extraction pressure sensor is used to obtain the real-time pressure value of the coffee powder bottle during coffee extraction.

[0008] In one possible implementation, the heating boiler module includes a heating boiler and a boiler electronic pressure sensor; wherein,

[0009] The first end of the heating boiler serves as the first end of the heating boiler module, and the boiler electronic pressure sensor is installed on the water outlet pipe of the heating boiler.

[0010] In one possible implementation, the first pinhole pressure relief valve module includes a first pinhole pressure relief valve and a first one-way solenoid valve, and the second pinhole pressure relief valve module includes a second pinhole pressure relief valve and a second one-way solenoid valve; wherein...

[0011] The first end of the first pinhole pressure relief valve is connected to the first end of the second pinhole pressure relief valve, the second end of the first electromagnetic pump, and the second end of the second electromagnetic pump, respectively. The second end of the first pinhole pressure relief valve is connected to the first end of the first single-way solenoid valve. The second end of the second pinhole pressure relief valve is connected to the first end of the second single-way solenoid valve. The second end of the first single-way solenoid valve is connected to the second end of the second single-way solenoid valve and the water tank, respectively.

[0012] In one possible implementation, the control device further includes a central processing unit and a control panel; wherein,

[0013] Both the central processing unit and the control panel are electrically connected to the extraction pressure sensor and the boiler electronic pressure sensor.

[0014] In one possible implementation, the control panel is further provided with a display screen and input buttons.

[0015] This application embodiment also provides a method for controlling extraction pressure and flow rate, the control method comprising:

[0016] Obtain the coffee extraction pressure value entered by the user on the control panel;

[0017] The central processing unit determines a constant pressure value corresponding to the coffee extraction pressure value based on the coffee extraction pressure value, and opens the needle pressure relief valve module corresponding to the constant pressure value;

[0018] After the pinhole pressure relief valve module is opened, it is checked whether the furnace pressure value collected by the boiler electronic pressure sensor is consistent with the coffee extraction pressure value.

[0019] If not, the second electromagnetic pump increases the flow rate in the water pipe and the heating boiler. The central processing unit determines the pressure value inside the boiler in real time based on the boiler pressure sensor. When the pressure value inside the boiler is consistent with the coffee extraction pressure value, the central processing unit stores and maintains the operating frequency of the second electromagnetic pump under the condition of consistent pressure value, and controls the extraction solenoid valve to open to extract coffee.

[0020] In one possible implementation, the constant pressure value is determined by the following steps:

[0021] When both the first pinhole pressure relief valve module and the second pinhole pressure relief valve module are closed, the constant pressure is the maximum pressure value corresponding to the maximum target electromagnetic pump.

[0022] When the first pinhole pressure relief valve module is open and the second pinhole pressure relief valve module is closed, the constant pressure is the pressure difference between the maximum pressure value and the pressure value flowing out of the first pinhole pressure relief valve.

[0023] When the first pinhole pressure relief valve module is closed and the second pinhole pressure relief valve module is open, the constant pressure value is the pressure difference between the maximum pressure value and the pressure value flowing out of the second pinhole pressure relief valve.

[0024] When both the first pinhole pressure relief valve module and the second pinhole pressure relief valve module are open, the constant pressure value is the pressure difference between the maximum pressure value and the relief pressure.

[0025] In one possible implementation, the control method further includes:

[0026] After obtaining the adaptive pressure extraction information input by the user on the control panel, the extraction pressure and flow control device extracts coffee at the maximum coffee extraction pressure value and sends the extraction pressure value collected by the extraction pressure sensor and the furnace pressure value collected by the boiler electronic pressure sensor to the central processing unit.

[0027] The central processing unit controls the pinhole pressure relief valve module to open based on the furnace pressure value and the extraction pressure value, so as to extract the remaining coffee powder based on a pressure value equal to the furnace pressure value and the extraction pressure value.

[0028] This application also provides an electronic device, including: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the steps of the extraction pressure and flow control method described above are performed.

[0029] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, performs the steps of the extraction pressure and flow rate control method described above.

[0030] The extraction pressure and flow control device, method, electronic device, and storage medium provided in this application embodiment include a first electromagnetic pump, a second electromagnetic pump, a water tank, a flow meter, a heating boiler module, a first pinhole pressure relief valve module, a second pinhole pressure relief valve module, an extraction solenoid valve, an extraction pressure sensor, and an extraction head. The first end of the first electromagnetic pump and the first end of the second electromagnetic pump are both connected to the first end of the flow meter, the second end of the flow meter is connected to the water tank, and the second ends of the first electromagnetic pump and the second electromagnetic pump are both connected to the first end of the heating boiler module. The first electromagnetic pump... The water supply pipe between the second end of the second electromagnetic pump and the first end of the heating boiler module is connected to the first end of the first pinhole pressure relief valve module and the first end of the second pinhole pressure relief valve module, respectively. The second ends of both the first and second pinhole pressure relief valve modules are connected to the water tank. The second end of the heating boiler module is connected to the first end of the extraction solenoid valve, and the second end of the extraction solenoid valve is connected to the extraction head. An extraction pressure sensor is installed between the extraction solenoid valve and the extraction head to obtain the real-time pressure value of the coffee powder bottle during coffee extraction. The extraction pressure and flow rate control device ensures effective and continuous output from two electromagnetic pumps, guaranteeing water flow and preventing instability caused by power changes due to pressure adjustment of a single electromagnetic pump, thus ensuring sufficient flow rate and water volume for effective and stable coffee extraction.

[0031] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is one of the structural schematic diagrams of an extraction pressure and flow rate control device provided in an embodiment of this application;

[0034] Figure 2This is a second schematic diagram of the structure of an extraction pressure and flow rate control device provided in an embodiment of this application;

[0035] Figure 3 A schematic diagram of the process flow of an extraction pressure and flow control method provided in an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0037] Icons: 100 - Control device for extraction pressure and flow; 110 - First electromagnetic pump; 120 - Second electromagnetic pump; 130 - Water tank; 140 - Flow meter; 150 - Heating boiler module; 151 - Heating boiler; 152 - Boiler electronic pressure sensor; 160 - First pinhole pressure relief valve module; 161 - First pinhole pressure relief valve; 162 - First one-way solenoid valve; 170 - Second pinhole pressure relief valve module; 171 - Second pinhole pressure relief valve; 172 - Second one-way solenoid valve; 180 - Extraction solenoid valve; 190 - Extraction pressure sensor; 10-10 - Extraction head; 10-20 - Central processing unit; 10-30 - Control panel; 400 - Electronic equipment; 410 - Processor; 420 - Memory; 430 - Bus. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0039] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0040] In order to enable those skilled in the art to use the content of this application, and in combination with the specific application scenario of "extracting coffee", the following implementation is given. For those skilled in the art, the general principles defined herein can be applied to other embodiments and application scenarios without departing from the spirit and scope of this application.

[0041] The methods and apparatus described in this application can be applied to any scenario where coffee extraction is required. This application does not limit the specific application scenario. Any scheme using the extraction pressure and flow control device, method, electronic device, and storage medium provided in this application is within the protection scope of this application.

[0042] First, the applicable scenarios for this application will be introduced. This application can be applied to the field of coffee machine technology.

[0043] Research has shown that a good cup of coffee requires achieving the right level of extraction—extracting the desired components while extracting too much or too little of unwanted substances to ensure a balanced and delicious flavor. During extraction, increased pressure leads to higher extraction, while decreased pressure results in lower extraction. Many espresso machines on the market utilize variable pressure extraction, primarily employing rotary or wheel pumps to adjust pump speed and thus flow rate and pressure. Some use vibratory pumps, but vibratory pumps mainly change the pump's Hertz frequency or cut off the Hertz band, altering the piston frequency and speed. This reduces the amount and rate of water entering the pipe, changing the internal pressure. However, this alteration can result in inconsistent flow rate and volume, hindering effective and stable extraction. Therefore, ensuring sufficient flow rate and volume for stable extraction has become a significant technical challenge.

[0044] Based on this, the embodiments of this application provide an extraction pressure and flow rate control device. By using the extraction pressure and flow rate control device, two electromagnetic pumps are used to provide effective and continuous output to ensure water flow and to prevent the water flow from becoming unstable due to power changes caused by pressure adjustment of a single electromagnetic pump, thereby ensuring sufficient flow rate and water flow for effective and stable coffee extraction.

[0045] Please see Figure 1 , Figure 1 This is one of the structural schematic diagrams of an extraction pressure and flow rate control device 100 provided in an embodiment of this application. Figure 1As shown in the figure, the extraction pressure and flow control device 100 provided in this application embodiment includes a first electromagnetic pump 110, a second electromagnetic pump 120, a water tank 130, a flow meter 140, a heating boiler module 150, a first pinhole pressure relief valve module 160, a second pinhole pressure relief valve module 170, an extraction solenoid valve 180, an extraction pressure sensor 190, and an extraction head 10-10.

[0046] Specifically, the first end of the first electromagnetic pump 110 and the first end of the second electromagnetic pump 120 are both connected to the first end of the flow meter 140, the second end of the flow meter 140 is connected to the water tank 130, and the second ends of the first electromagnetic pump 110 and the second electromagnetic pump 120 are both connected to the first end of the heating boiler module 150; the water delivery pipe between the second ends of the first electromagnetic pump 110, the second ends of the second electromagnetic pump 120 and the first end of the heating boiler module 150 is respectively connected to the first end of the first pinhole pressure relief valve module 160 and... The first end of the second pinhole pressure relief valve module 170 is connected to the first end of the first pinhole pressure relief valve module 160 and the second end of the second pinhole pressure relief valve module 170 are both connected to the water tank 130; the second end of the heating boiler module 150 is connected to the first end of the extraction solenoid valve 180, and the second end of the extraction solenoid valve 180 is connected to the extraction head 10-10; the extraction pressure sensor 190 is set between the extraction solenoid valve 180 and the extraction head 10-10, and the extraction pressure sensor 190 is used to obtain the real-time pressure value of the coffee powder bottle during coffee extraction.

[0047] Here, the device includes two electromagnetic pumps with the same maximum pressure. The water inlet of the electromagnetic pumps is connected to the water tank 130, and the water outlets of the two electromagnetic pumps merge and enter the heating boiler module 150. The water pipe between the merging point of the two electromagnetic pumps and the heating boiler module 150 is connected to at least two sets of pinhole pressure relief valve modules with different pressures. The water outlet of the heating boiler module 150 is connected to the extraction solenoid valve 180 and then to the extraction head 10-10. An extraction electronic pressure sensor is installed between the extraction solenoid valve 180 and the extraction head 10-10 to sense the real-time pressure of the powder bottle during extraction.

[0048] Here, the two electromagnetic pumps are divided into the first electromagnetic pump 110 and the second electromagnetic pump. The two electromagnetic pumps can work independently or simultaneously, or one electromagnetic pump can work at full frequency while the other electromagnetic pump can work at variable frequency. Based on the first electromagnetic pump, the pressure and flow in the water pipe and boiler can be provided as four constant pressure values ​​according to the two pinhole pressure relief valve modules.

[0049] For further details, please refer to Figure 2 , Figure 2 This is a second schematic diagram of the structure of an extraction pressure and flow rate control device 100 provided in an embodiment of this application. Figure 2 As shown, the heating boiler module 150 includes a heating boiler 151 and a boiler electronic pressure sensor 152; wherein,

[0050] The first end of the heating boiler 151 serves as the first end of the heating boiler module 150, and the boiler electronic pressure sensor 152 is installed on the water outlet pipe of the heating boiler 151.

[0051] Here, the extraction pressure sensor 190 mainly detects the passive tube pressure caused by the back pressure of the coffee powder, while the boiler electronic pressure sensor 152 detects the furnace pressure composed of the pump flow and pressure.

[0052] Furthermore, such as Figure 2 As shown, the first pinhole pressure relief valve module 160 includes a first pinhole pressure relief valve 161 and a first one-way solenoid valve 162, and the second pinhole pressure relief valve module 170 includes a second pinhole pressure relief valve 171 and a second one-way solenoid valve 172; wherein, the first end of the first pinhole pressure relief valve 161 is connected to the first end of the second pinhole pressure relief valve 171, the second end of the first solenoid pump 110, and the second end of the second solenoid pump 120, respectively; the second end of the first pinhole pressure relief valve 161 is connected to the first end of the first one-way solenoid valve 162; the second end of the second pinhole pressure relief valve 171 is connected to the first end of the second one-way solenoid valve 172; and the second end of the first one-way solenoid valve 162 is connected to the second end of the second one-way solenoid valve 172 and the water tank 130, respectively.

[0053] Here, the two pinhole pressure relief valves can provide four constant pressure values. For example, the electromagnetic pump is 15 bar, the first pinhole pressure relief valve 161 has a pressure relief of 6 bar, and the second pinhole pressure relief valve 171 has a pressure relief of 9 bar, under the condition of constant pump output:

[0054] The first constant pressure value is: when the first single-way solenoid valve 162 and the second single-way solenoid valve 172 in the pipeline are closed, the constant pressure value from the extraction pipeline to the boiler is 15 bar, which is the body pressure of the maximum electromagnetic pump.

[0055] The second constant pressure value is as follows: When the first one-way solenoid valve 162 in the pipeline is open and the second one-way solenoid valve 172 is closed, water with a pressure of 6 bar in the pipeline will flow out from the first needle-hole pressure relief valve 161. According to Newton's law of constant force, when the maximum pressure of the electromagnetic pump is 15 bar, the pressure in the extraction pipeline and boiler will be 15 bar - 6 bar = 9 bar. Under the same flow rate and velocity, 9 bar is the constant pressure in the extraction pipeline and boiler. Therefore, the second constant pressure value is 9 bar.

[0056] The third constant pressure value is as follows: When the first one-way solenoid valve 172 and the second one-way solenoid valve 172 in the pipeline are closed, the water with a pressure of 9 bar in the pipeline will flow out from the second needle-hole pressure relief valve 171. According to Newton's law of constant force, when the maximum pressure of the electromagnetic pump is 15 bar, the pressure in the extraction pipeline and boiler will be 15 bar - 9 bar = 6 bar. Under the same flow rate and velocity, the 6 bar pressure is the constant pressure in the extraction pipeline and boiler. Therefore, the third constant pressure value is 6 bar.

[0057] The fourth constant pressure value is as follows: When both the first and second single-way solenoid valves 172 in the pipeline are open, the pressure in the extraction pipeline and the boiler flows out from the first pinhole pressure relief valve 161 and the second pinhole pressure relief valve 171. When the two pinhole pressure relief valves release pressure at the same time, the pressure released = the maximum pressure released by the pressure relief valve + the pressure difference = 9 + (9-6) = 12 bar. That is, the pressure in the extraction pipeline and the boiler = 15 bar - 12 bar = 3 bar. Therefore, the fourth constant pressure value is 3 bar.

[0058] In a specific embodiment, when the solenoid valve of the pinhole pressure relief valve is fully closed, the pressure and flow rate in the pipe are at their maximum values, equal to the maximum pressure and flow rate of the first solenoid pump, since there is no pressure relief. When the first one-way solenoid valve 162 of the first pinhole pressure relief valve 161 is open and the second one-way solenoid valve 172 of the second pinhole pressure relief valve 171 is closed, some of the pressure and flow rate in the pipe will flow back to the water tank 130 through the first pinhole pressure relief valve 161, while the constant pressure in the pipe remains constant pressure 1 = maximum pump pressure (pump pressure) - pressure relief pressure of the first pinhole pressure relief valve 161 (pressure relief 1). When the first one-way solenoid valve 162 of the first pinhole pressure relief valve 161 is closed and the second one-way solenoid valve 172 of the second pinhole pressure relief valve 171 is open, some of the pressure and flow rate in the pipe will flow back to the water tank 130 through the second pinhole pressure relief valve 161. 71 flows back to the water tank 130, while the constant pressure 2 in the pipe is maintained = maximum pump pressure (pump pressure) - pressure relief pressure of the second pinhole pressure relief valve 171 (pressure relief 2). When both the first single-way solenoid valve 162 of the first pinhole pressure relief valve 161 and the second single-way solenoid valve 172 of the second pinhole pressure relief valve 171 are open, part of the pressure and flow in the pipe will flow back to the water tank 130 through the first and second pinhole pressure relief valves 171. The constant pressure 3 in the pipe = (pump pressure - pressure relief 1) - ((pump pressure - pressure relief 2). In this way, the electromagnetic pump provides constant pressure in the pipeline in the order of maximum electromagnetic pump pressure > constant pressure 1 > constant pressure 2 > constant pressure 3. This effectively ensures that the vibrating pump provides effective and continuous output, guarantees water flow, and prevents the water flow from becoming unstable due to changes in the operating frequency caused by pressure adjustment of a single electromagnetic pump, thus affecting extraction.

[0059] When there are two pinhole pressure relief valves, the maximum number of pressure combinations in the pipeline and boiler is 3. When there are n pinhole pressure relief valves, the maximum number of pressure combinations in the pipeline and boiler is: number of pressure relief combinations + maximum pump pressure value.

[0060] Furthermore, such as Figure 2 As shown, the control device also includes a central processing unit 10-20 and a control panel 10-30; wherein the central processing unit 10-20 and the control panel are both electrically connected to the extraction pressure sensor 190 and the boiler electronic pressure sensor 152. The control panel is also equipped with a display screen and input buttons.

[0061] Here, the device includes a CPU and a control panel 10-30, which are connected to the electrical components and sensors inside the coffee machine. The control panel allows the user to set the desired pressure and voltage parameters.

[0062] This application provides an extraction pressure and flow control device, comprising a first electromagnetic pump, a second electromagnetic pump, a water tank, a flow meter, a heating boiler module, a first pinhole pressure relief valve module, a second pinhole pressure relief valve module, an extraction solenoid valve, an extraction pressure sensor, and an extraction head. The first end of the first electromagnetic pump and the first end of the second electromagnetic pump are both connected to the first end of the flow meter, and the second end of the flow meter is connected to the water tank. The second ends of the first electromagnetic pump and the second electromagnetic pump are both connected to the first end of the heating boiler module. A water delivery pipe between the second ends of the first electromagnetic pump, the second electromagnetic pump, and the first end of the heating boiler module is connected to the first ends of the first and second pinhole pressure relief valve modules, respectively. The second ends of both the first and second pinhole pressure relief valve modules are connected to the water tank. The second end of the heating boiler module is connected to the first end of the extraction solenoid valve, and the second end of the extraction solenoid valve is connected to the extraction head. The extraction pressure sensor is disposed between the extraction solenoid valve and the extraction head, and the extraction pressure sensor is used to acquire the real-time pressure value of the coffee powder bottle during coffee extraction. By controlling the extraction pressure and flow rate, two electromagnetic pumps are used to provide effective and continuous output to ensure water flow. The water flow will not become unstable due to power changes caused by pressure adjustment of a single electromagnetic pump, thus ensuring sufficient flow rate and water volume for effective and stable coffee extraction.

[0063] In this step, please refer to Figure 3 , Figure 3 This is a schematic diagram of the process flow of an extraction pressure and flow rate control method provided in an embodiment of this application. Figure 3 As shown in the embodiments of this application, the control method includes:

[0064] S301: Obtain the coffee extraction pressure value entered by the user on the control panel.

[0065] In this step, the coffee extraction pressure value entered by the user on the control panel is obtained.

[0066] S302: The central processing unit determines a constant pressure value corresponding to the coffee extraction pressure value based on the coffee extraction pressure value, and opens the pinhole pressure relief valve module corresponding to the constant pressure value.

[0067] In this step, the central processing unit determines a constant pressure value corresponding to the coffee extraction pressure value, and opens the needle pressure relief valve module corresponding to the constant pressure value to start the first electromagnetic pump.

[0068] Here, the constant pressure value is pre-calculated. During extraction, the CPU calculates the closest constant pressure value based on the coffee extraction pressure value input by the user.

[0069] In one possible implementation, the constant pressure value is determined by the following steps:

[0070] A: When both the first pinhole pressure relief valve module and the second pinhole pressure relief valve module are closed, the constant pressure is the maximum pressure value corresponding to the largest target electromagnetic pump;

[0071] B: When the first pinhole pressure relief valve module is open and the second pinhole pressure relief valve module is closed, the constant pressure is the pressure difference between the maximum pressure value and the pressure value flowing out of the first pinhole pressure relief valve;

[0072] C: When the first pinhole pressure relief valve module is closed and the second pinhole pressure relief valve module is open, the constant pressure value is the pressure difference between the maximum pressure value and the pressure value flowing out of the second pinhole pressure relief valve.

[0073] D: When both the first pinhole pressure relief valve module and the second pinhole pressure relief valve module are open, the constant pressure value is the pressure difference between the maximum pressure value and the relief pressure.

[0074] The method for determining the constant pressure value will not be elaborated here.

[0075] S303: After the pinhole pressure relief valve module is opened, it checks whether the furnace pressure value collected by the boiler electronic pressure sensor is consistent with the coffee extraction pressure value.

[0076] In this step, after the pinhole pressure relief valve module is opened, it is checked whether the pressure value inside the furnace collected by the boiler electronic pressure sensor is consistent with the coffee extraction pressure value.

[0077] S304: If not, the second electromagnetic pump operates to increase the flow rate in the water pipe and the heating boiler. The central processing unit determines the pressure value inside the boiler in real time based on the boiler pressure sensor. When the pressure value inside the boiler is consistent with the coffee extraction pressure value, the central processing unit stores and maintains the operating frequency of the second electromagnetic pump under the condition of consistent pressure value, and controls the extraction solenoid valve to open to extract coffee.

[0078] In this step, if there is a discrepancy, the second electromagnetic pump operates to increase the flow rate in the water pipes and the heating boiler. The central processing unit determines the boiler pressure value in real time based on the boiler pressure sensor. When the boiler pressure value matches the coffee extraction pressure value, the central processing unit stores and maintains the operating frequency of the second electromagnetic pump under the condition of consistent pressure values, and controls the extraction solenoid valve to open to extract coffee. If they match, the second electromagnetic pump does not operate and remains in the operating state.

[0079] Here, users can select different boiler pressures for extraction as needed. During extraction, the CPU calculates the closest constant pressure value based on the coffee extraction pressure value input by the user, and then opens the solenoid valve of the corresponding needle-hole pressure relief valve. The first solenoid pump starts working. Based on the comparison between the boiler electronic pressure sensor and the coffee extraction pressure value selected by the user, if the boiler pressure value equals the coffee extraction pressure value, the second solenoid pump will remain inactive. If the boiler pressure value does not equal the coffee extraction pressure value, the second solenoid pump will start working at full frequency or variable frequency. When the second solenoid pump is working, it increases the flow rate in the pipe and in the boiler. As the flow rate increases, the pressure also increases. When the CPU determines that the boiler pressure equals the coffee extraction pressure value, the CPU records and maintains the current frequency of the second solenoid pump, opens the extraction solenoid valve to perform extraction, and records the value recorded by the CPU as the reference value for the next extraction. This adjustment method is the constant pressure variable pressure control method.

[0080] In another specific embodiment, when the user inputs a coffee extraction pressure value, the system first searches the database to see if the coffee extraction pressure value exists. If it does, the system determines the operating frequency of the second electromagnetic pump corresponding to the coffee extraction pressure value, directly adjusts the operating frequency of the second electromagnetic pump, and controls the extraction solenoid valve to open for coffee extraction, without needing to determine the operating frequency of the second electromagnetic pump corresponding to the coffee extraction pressure value again.

[0081] In one possible implementation, the control method further includes:

[0082] a: After obtaining the adaptive pressure extraction information input by the user on the control panel, the extraction pressure and flow control device extracts coffee at the maximum extraction pressure value and sends the extraction pressure value collected by the extraction pressure sensor and the furnace pressure value collected by the boiler electronic pressure sensor to the central processing unit.

[0083] Here, after obtaining the adaptive pressure extraction information entered by the user on the control panel, the extraction pressure and flow control device extracts coffee at the maximum extraction pressure value and sends the extraction pressure value collected by the extraction pressure sensor and the furnace pressure value collected by the boiler electronic pressure sensor to the central processing unit.

[0084] Specifically, the greater the pressure of the boiler, the greater the pressure inside the pipeline. When the pressure of the boiler is less than the back pressure of the coffee powder, there is insufficient water during extraction, which prevents the water from passing through the coffee powder at the normal extraction rate. This causes the water to remain in the coffee powder for a longer time, resulting in over-extraction. Conversely, when the pressure of the boiler is greater than the back pressure of the coffee powder, the pressure during extraction causes the water to remain in the coffee powder for a shorter time, resulting in under-extraction.

[0085] b: The central processing unit controls the pinhole pressure relief valve module to open based on the furnace pressure value and the extraction pressure value, so as to extract the remaining coffee powder based on the pressure value equal to the furnace pressure value and the extraction pressure value.

[0086] Here, the central processing unit controls the needle pressure relief valve module to open based on the furnace pressure value and the extraction pressure value, so that the remaining coffee powder is extracted according to the pressure value that is equal to the furnace pressure value and the extraction pressure value.

[0087] When the user selects adaptive pressure extraction via the operation panel, the machine will start extraction at maximum pressure. The extraction pressure sensor and the boiler electronic pressure sensor will send pressure signals to the CPU. The CPU will compare the pressures. Once the pressure from the extraction pressure sensor stabilizes, the CPU will adjust the pressure according to the extraction pressure sensor using a constant pressure variable pressure control method after two seconds, so that the furnace pressure value obtained from the boiler electronic pressure sensor equals the extraction pressure value, and then proceed with the remaining extraction.

[0088] This application provides a method for controlling extraction pressure and flow rate. The method includes: acquiring a coffee extraction pressure value input by a user on a control panel; a central processing unit (CPU) determining a constant pressure value corresponding to the coffee extraction pressure value and opening a pinhole pressure relief valve module corresponding to the constant pressure value; after the pinhole pressure relief valve module is opened, detecting whether the furnace pressure value collected by the boiler electronic pressure sensor is consistent with the coffee extraction pressure value; if not, a second electromagnetic pump operates to increase the flow rate in the water pipe and the heating boiler; the CPU determines the furnace pressure value in real time based on the boiler pressure sensor; when the furnace pressure value is consistent with the coffee extraction pressure value, the CPU stores and maintains the operating frequency of the second electromagnetic pump under the consistent pressure value state, and controls the extraction electromagnetic valve to open for coffee extraction. This extraction pressure and flow rate control device utilizes two electromagnetic pumps to provide effective and continuous output, ensuring water flow and preventing instability caused by power changes due to pressure adjustment of a single electromagnetic pump, thus guaranteeing sufficient flow rate and water volume for effective and stable coffee extraction.

[0089] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 4 As shown, the electronic device 400 includes a processor 410, a memory 420, and a bus 430.

[0090] The memory 420 stores machine-readable instructions executable by the processor 410. When the electronic device 400 is running, the processor 410 communicates with the memory 420 via the bus 430. When the machine-readable instructions are executed by the processor 410, they can perform the operations described above. Figure 3 The steps of the extraction pressure and flow rate control method in the illustrated method embodiment can be found in the method embodiment for specific implementation, and will not be repeated here.

[0091] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can perform the above-described actions. Figure 3 The steps of the extraction pressure and flow rate control method in the illustrated method embodiment can be found in the method embodiment for specific implementation, and will not be repeated here.

[0092] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0093] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0094] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0095] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0096] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0097] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control device for extraction pressure flow, characterized by, The control device comprises a first electromagnetic pump, a second electromagnetic pump, a water tank, a flow meter, a heating boiler module, a first pinhole pressure relief valve module, a second pinhole pressure relief valve module, an extraction electromagnetic valve, an extraction pressure sensor and an extraction head; wherein, The first end of the first electromagnetic pump and the first end of the second electromagnetic pump are connected with the first end of the flow meter, the second end of the flow meter is connected with the water tank, and the second end of the first electromagnetic pump and the second end of the second electromagnetic pump are connected with the first end of the heating boiler module; The water pipes between the second end of the first electromagnetic pump, the second end of the second electromagnetic pump and the first end of the heating boiler module are connected with the first end of the first pinhole pressure relief valve module and the first end of the second pinhole pressure relief valve module respectively, and the second end of the first pinhole pressure relief valve module and the second end of the second pinhole pressure relief valve module are connected with the water tank; The second end of the heating boiler module is connected with the first end of the extraction electromagnetic valve, the second end of the extraction electromagnetic valve is connected with the extraction head, the extraction pressure sensor is arranged between the extraction electromagnetic valve and the extraction head, and the extraction pressure sensor is used to acquire the real-time pressure value of the powder bottle during coffee extraction; The first pinhole pressure relief valve module comprises a first pinhole pressure relief valve and a first single-way electromagnetic valve, and the second pinhole pressure relief valve module comprises a second pinhole pressure relief valve and a second single-way electromagnetic valve; wherein, The first end of the first pinhole pressure relief valve is connected with the first end of the second pinhole pressure relief valve, the second end of the first electromagnetic pump and the second end of the second electromagnetic pump respectively, the second end of the first pinhole pressure relief valve is connected with the first end of the first single-way electromagnetic valve, the second end of the second pinhole pressure relief valve is connected with the first end of the second single-way electromagnetic valve, and the second end of the first single-way electromagnetic valve is connected with the second end of the second single-way electromagnetic valve and the water tank respectively.

2. The control device according to claim 1, characterized by The heating boiler module comprises a heating boiler and a boiler electronic pressure sensor; wherein, The first end of the heating boiler serves as the first end of the heating boiler module, and the boiler electronic pressure sensor is arranged on the water outlet pipeline of the heating boiler.

3. The control device of claim 2, wherein The control device further comprises a central processing unit and a control panel; wherein, The central processing unit and the control panel are electrically connected with the extraction pressure sensor and the boiler electronic pressure sensor.

4. The control device according to claim 3, characterized by The control panel is further provided with a display screen and input keys.

5. A control method of extraction pressure flow, characterized by, The control method is applied to the extraction pressure flow control device according to any one of claims 1-4, and the control method comprises the following steps: Acquiring the coffee extraction pressure value input by a user on the control panel; The central processing unit determines a constant pressure value corresponding to the coffee extraction pressure value based on the coffee extraction pressure value, and opens the pinhole pressure relief valve module corresponding to the constant pressure value; After the pinhole pressure relief valve module is opened, it is detected whether the pressure value in the boiler collected by the boiler electronic pressure sensor is consistent with the coffee extraction pressure value. If not, the second electromagnetic pump works to increase the flow in the water pipe and in the heating boiler, the central processor determines the pressure value in the boiler in real time according to the boiler pressure sensor, when the pressure value in the boiler is consistent with the coffee extraction pressure value, the central processor stores and maintains the working frequency of the second electromagnetic pump in the consistent pressure value state, and controls the extraction electromagnetic valve to open for coffee extraction.

6. The control method according to claim 5, characterized by The constant pressure value is determined by the following steps: When the first needle hole pressure relief valve module and the second needle hole pressure relief valve module are both closed, the constant pressure is the maximum pressure value corresponding to the maximum target electromagnetic pump; When the first needle hole pressure relief valve module is open and the second needle hole pressure relief valve module is closed, the constant pressure is the pressure difference between the maximum pressure value and the pressure value discharged by the first needle hole pressure relief valve; When the first needle hole pressure relief valve module is closed and the second needle hole pressure relief valve module is open, the constant pressure value is the pressure difference between the maximum pressure value and the pressure value discharged by the second needle hole pressure relief valve; When the first needle hole pressure relief valve module and the second needle hole pressure relief valve module are both open, the constant pressure value is the pressure difference between the maximum pressure value and the discharge pressure.

7. The control method according to claim 5, characterized by, The control method further comprises: After obtaining the adaptive pressure extraction information input by the user on the control panel, the extraction pressure flow control device extracts at the maximum coffee extraction pressure value, and sends the extraction pressure value collected by the extraction pressure sensor and the pressure value in the boiler collected by the boiler electronic pressure sensor to the central processor; After the central processor controls the needle hole pressure relief valve module to open based on the pressure value in the boiler and the extraction pressure value, the remaining coffee powder is extracted based on the pressure value equal to the pressure value in the boiler and the extraction pressure value.

8. An electronic device, comprising: It comprises: A processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, and the machine readable instructions are executed by the processor to perform the steps of the extraction pressure flow control method according to any one of claims 5 to 7.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, which is executed by the processor to perform the steps of the extraction pressure flow control method according to any one of claims 5 to 7.

Images