CN220045597U - Pressure-controlled coffee extraction system - Google Patents

Abstract

The utility model discloses a pressure control coffee extraction system which comprises a water supply container, a water pump, a pressure detection component, a heating device and an extraction component which are sequentially connected, wherein the water pump comprises a first water pump and a second water pump which are connected in parallel, the first water pump and the second water pump are in wrong phase operation and supply water to the extraction component together, and a pressure control circuit module drives the first water pump and the second water pump to work. The pressure-controlled coffee extraction system can realize the stability, accuracy and controllability of the water pressure of coffee extraction under the condition of not generating extra waste water, and ensures the taste of coffee extraction.

Description

Pressure-controlled coffee extraction system

Technical Field

The utility model relates to the technical field of coffee machine products, in particular to a pressure-controlled coffee extraction system.

Background

Coffee machines are currently using more appliances, and extraction of coffee is a major factor determining the mouthfeel of the final coffee. CN202310079056.X discloses a constant pressure and pressure variable coffee extraction system and control method, comprising a water supply container, a delivery pump, a heating device, a pressure detection member, a three-way valve, a switch valve, a wastewater container and an extraction member. According to the scheme, the three-way valve and the wastewater container are arranged to adjust the pressure during extraction, the system is used for reducing the pressure, and the additional waste of resources is caused by the fact that the wastewater is generated by additional drainage.

Disclosure of Invention

The utility model aims to provide a pressure-controlled coffee extraction system, which realizes the stability and the accuracy and the controllability of the water pressure of coffee extraction under the condition of not additionally discharging generated wastewater so as to overcome the defects in the prior art.

The utility model is realized by the following technical scheme: the utility model provides a accuse pressure coffee extraction system, includes water supply container, water pump, pressure detection component, heating device and the extraction component that connects gradually, the water pump includes parallelly connected first water pump, second water pump, first water pump and second water pump are wrong looks operation, supply water to the extraction component jointly, and accuse pressure circuit module drives first water pump, second water pump work.

Further, the water pump is a vibration pump.

Further, the extraction system further comprises a flow detection member disposed between the water supply container and the water pump.

Further, the voltage control circuit module drives the first water pump and the second water pump to supply water at a first pressure, then supply water at a second pressure, and then the water pressure is slowly reduced to a third pressure.

The utility model has the following beneficial effects: the controllable coffee extraction system provided by the utility model can realize the stability and the accuracy and the controllability of water pressures with different requirements during coffee extraction under the condition of not generating additional waste water, and ensures the taste of coffee extraction.

Drawings

Fig. 1 is a schematic diagram of a pressure-controlled coffee extraction system according to the present utility model.

Fig. 2 is a schematic diagram of a water outlet pressure curve of a parallel water pump in a pressure-controlled coffee extraction system according to the present utility model.

Fig. 3 is a schematic diagram of a pressure swing extraction pressure curve of a third embodiment of a pressure controlled extraction coffee system according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Reference is now made to the description of a controlled pressure coffee extraction system according to some embodiments of the utility model.

Example 1

As shown in fig. 1, the pressure-controlled coffee extraction system comprises a water supply container 1, a water pump 2, a pressure detection component 3, a heating device 4 and an extraction component 5 which are sequentially connected, wherein the water pump 2 comprises a first water pump 8 and a second water pump 9 which are connected in parallel, the first water pump 8 and the second water pump 9 are in wrong phase operation and supply water to the extraction component 5 together, and a pressure control circuit module 7 drives the first water pump 8 and the second water pump 9 to work.

Further, the water pump 2 is a vibration pump.

Further, the extraction system further comprises a flow detection member 6, the flow detection member 6 being arranged between the water supply container 1 and the water pump 2.

Based on the above described structure, the pressure control coffee extraction system can realize constant pressure extraction and pressure variable extraction, and the specific process is as follows:

constant pressure extraction

The water pump 2 is started to pump water in the water supply container 1 into the system, and the system is connected by a passage, so that the extraction pressure is the pressure of the water outlet of the water pump 2, namely the pressure detected by the pressure detection component 3, the system adopts a first water pump 8 and a second water pump 9 which are connected in parallel, the first water pump 8 and the second water pump 9 are all vibration pumps and work in a wrong phase, the wrong phase work enables the first water pump 8 to start the water suction stroke when the water suction stroke is finished and the second water pump 9 to start the water discharge stroke when the water discharge stroke is finished, and therefore, the water pump is always operated in the water discharge stroke during the water supply period of the water pump 2, and the pressure is stable.

In the coffee extraction process, the pressure detection component 3 detects the water outlet pressure of the water pump 2 in real time and feeds actual pressure data back to the pressure control circuit module 7, and when the actual pressure of the continuous operation of the water pump 2 exceeds the preset pressure, the pressure control circuit module 7 adjusts the working pressure of the water pump 2 in an alternating current chopper voltage regulation mode, so that the actual pressure is consistent with the preset pressure.

(II) pressure-variable extraction

When the extraction pressure is uniformly stable at a certain pressure, the water outlet pressure can be actively changed according to a preset extraction step, so that the changed extraction pressure is realized. The pressure detection component 3 detects the current water outlet pressure of the water pump 2 and feeds actual pressure data back to the pressure control circuit module 7, the pressure control circuit module 7 adjusts the water outlet pressure of the water pump 2 according to preset extraction pressure, and meanwhile, the pressure control circuit module 7 corrects the self adjusting amplitude according to the actual pressure fed back by the pressure detection component 3 in real time, so that the extraction pressure which is stable to reach the required fluctuation in the shortest time is realized.

The pressure-controlled coffee extraction system comprises a parallel double vibration pump which is arranged in the structure and runs in a staggered phase, so that the pressure can be stably and constantly realized in the whole extraction process, and meanwhile, the pressure can be stably and rapidly changed to different extraction pressures, thereby obtaining the coffee with good taste.

Example two

The second embodiment of the present utility model also provides a control method of a pressure-controlled coffee extraction system, which is based on the pressure-controlled coffee extraction system described in the first embodiment. Therefore, the pressure control coffee extraction system has all the beneficial technical effects, and the same technical characteristics and beneficial effects are not repeated.

In this embodiment, preferably, the control method of the pressure controlled coffee extraction system comprises the steps of:

step one: starting a water pump, extracting water in a water supply container into a system, and detecting the inflow water quantity by a flow detection component arranged between the water supply container and the water pump;

step two: the voltage control circuit module controls the first water pump and the second water pump to trigger starting in a zero crossing mode, and the first water pump and the second water pump work in a phase-staggered mode;

step three: the pressure detection component detects the actual pressure of the water discharged by the water pump, and feeds data back to the pressure control circuit module, and the pressure control circuit module controls the water pump to adjust the water pressure according to the condition that the actual pressure is consistent with the preset pressure;

step four: after the water pressure reaches the preset pressure, the water is heated to the set temperature by the heating device, and flows into the extraction component to finish extraction.

In the extraction process, the water supply for extraction is carried out by two parallel vibration pumps. As shown in fig. 2, since the vibration pump includes two strokes of water suction and water discharge in the operation period, the water suction stroke is not supplied with water, that is, the water supply pressure of the stroke is 0, so that the water supply pressure curve 11 provided by the single vibration pump shows obvious wave fluctuation in the continuous period of the alternating current sine wave 10; the two vibration pumps are connected in parallel and are connected in a staggered mode, and the staggered operation of the first water pump 8 and the second water pump 9 can be realized by combining a zero-crossing triggering starting mode, so that one water pump is always in a drainage stroke in a working period, namely, in the continuous period of an alternating current sine wave 10, the water supply pressure curve 12 provided by the two vibration pumps connected in parallel is stable, the pressure average value is also improved, the balance and stability of the water supply pressure in the period are realized, and the capacity of realizing water pressure stability in different extraction pressure settings in the whole extraction process is realized.

In the extraction process, the flow detection component 6 detects the water supply amount in the current extraction step, when the actual water supply amount reaches the set water supply amount in the current extraction step, the extraction step is ended and the next extraction step is started, and the steps are repeated until all the extraction steps are completed, and the current extraction is completed. The flow detection component 6 is used for replacing a timing component to control the start and the end of different extraction steps, so that the water consumption of different extraction steps can be controlled more directly to ensure the extraction effect, and the extraction water consumption also corresponds to the drinking coffee quantity, thereby being more convenient for a user to operate and adjust.

In the extraction process, the pressure detection component 3 detects the actual pressure of water discharged by the water pump 2, data is fed back to the pressure control circuit module 7, the pressure control circuit module 7 controls the water pump 2 to carry out water pressure adjustment according to the condition that the actual pressure accords with the preset pressure, and when the actual pressure is greater than the preset pressure, the pressure control circuit module 7 controls the water pump 2 in an alternating current chopper voltage adjustment mode, so that water pressure adjustment and reduction are completed. Because the phase-staggering work of the first water pump 8 and the second water pump 9 which are connected in parallel realizes the stability of water pressure and the lifting of pressure average value, when an alternating current chopper voltage regulation mode is adopted, the alternating current chopper voltage regulation mode has larger space of regulating amplitude and linear smooth fluctuation trend, so that the pressure fluctuation of the water pump 2 is smooth and cannot be severely fluctuated in the voltage transformation process, the timeliness and the accuracy of the pressure control circuit module 7 for water pressure regulation are good, the switching time required by the extraction pressure fluctuation is very short, and the extraction pressure stability is realized quickly at a new pressure value after the switching.

Example III

The third embodiment of the present utility model also provides a control method of a pressure-controlled coffee extraction system, which is based on the pressure-controlled coffee extraction system described in the first embodiment. Therefore, the pressure control coffee extraction system has all the beneficial technical effects, and the same technical characteristics and beneficial effects are not repeated.

In this embodiment, as shown in fig. 3, the control method of the pressure-controlled coffee extraction system preferably comprises the steps of:

firstly, starting extraction, and pre-soaking coffee powder in an extraction member 5 at a low pressure by using a first pressure P1;

step two, extracting the coffee powder in the extraction member 5 at a high pressure by using a second pressure P2;

and thirdly, linearly reducing the second pressure P2 to the third pressure P3 to perform pressure reduction extraction on the coffee powder in the extraction member 5, and ending the extraction.

Further, the first pressure P1 is 3-5bar, the second pressure P2 is 8-12bar, and the third pressure P3 is 5-6bar.

The low-pressure pre-soaking mainly comprises the steps of pre-wetting the coffee powder in the extraction component 5, discharging air in the coffee powder, enabling the coffee powder to reach an initial wetting state, enabling water to be uniform when passing through the coffee powder, and avoiding channel effect; the high-pressure extraction is to extract the core component from the coffee powder by penetrating the coffee powder with high-pressure hot water; the step-down extraction is to extract the main core component from the coffee powder by high pressure extraction, and then gradually maximize the residual core component by adopting linearly reduced pressure.

According to the pressure-variable extraction implementation mode, the core components in the coffee powder can be extracted to the greatest extent, so that better taste is obtained.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (4)

1. The utility model provides a accuse pressure coffee extraction system, includes water supply container, water pump, pressure detection component, heating device and extraction component that connects gradually, its characterized in that: the water pump comprises a first water pump and a second water pump which are connected in parallel, the first water pump and the second water pump are in phase-staggered operation, water is supplied to the extraction component together, and the voltage control circuit module drives the first water pump and the second water pump to work.

2. A pressure controlled coffee extraction system according to claim 1, wherein said water pump is a vibrating pump.

3. A pressure controlled coffee extraction system according to claim 1, further comprising a flow detection member, said flow detection member being arranged between the water supply container and the water pump.

4. The pressure-controlled coffee extraction system of claim 1, wherein the pressure-controlled circuit module drives the first pump and the second pump to supply water at a first pressure, then at a second pressure, and then slowly drops to a third pressure.