CN115779484A - Coffee liquid self-identification steady-flow ultralow-temperature extraction process and application thereof - Google Patents
Coffee liquid self-identification steady-flow ultralow-temperature extraction process and application thereof Download PDFInfo
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Abstract
The invention relates to the technical field of coffee extraction, and discloses a self-identification steady-flow ultralow-temperature extraction process for coffee liquid and application thereof.
Description
Technical Field
The invention relates to the technical field of coffee extraction, in particular to a coffee liquid self-identification steady-flow ultralow-temperature extraction process and application thereof.
Background
The coffee extract is used as a raw material of a high-quality coffee product, a high-temperature extraction process is mostly adopted in the traditional extract products in China at present, and the final finished product has the defects of bad foreign flavor and peculiar smell, sharp sour flavor and unsmooth feeling, heavy bitter flavor and the like due to the high-temperature condition of the extraction process. As the market demand changes, the coffee extract with better taste needs to be selected. The coffee flavor components can be retained to the maximum extent by adopting a low-temperature extraction process, and the obtained coffee extract and the product thereof have strong and full aroma, soft acidity, smooth mouthfeel, softness and sweet aftertaste.
Because flavor components in the coffee powder can not be extracted completely through once extraction, the existing coffee powder low-temperature extraction device generally needs to be provided with a plurality of extraction tanks to repeatedly extract the coffee powder feed liquid, so that the purchase cost and the use cost of the device are overhigh, the occupied area of the plurality of extraction tanks arranged side by side is overlarge, the device is not beneficial to daily maintenance and cleaning of workers, the labor intensity of the workers is increased, and the extraction liquid obtained after the flavor components in the coffee powder are extracted by pure water needs to be discharged into a cooling device to be cooled through the plurality of extraction tanks in sequence, so that the coffee extraction liquid needs to be retained in the extraction tanks with certain temperature for a long time, the flavor components in the coffee feed liquid are easily lost, and the taste of coffee is lack.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a coffee material liquid self-identification steady-flow ultralow-temperature extraction process and application thereof, which can circularly perform extraction for three times in the same extraction tank, can cool the extraction liquid in time after each extraction to retain flavor components, has the advantages of effectively reducing the extraction cost and labor intensity, ensuring good extraction effect and the like, and solves the problem that a plurality of extraction tanks are required to repeatedly extract coffee powder material liquid in the prior art.
(II) technical scheme
In order to solve the technical problem that a plurality of extraction tanks are required to be arranged to repeatedly extract the coffee powder liquid in the prior art, the invention provides the following technical scheme:
a coffee material liquid self-identification steady flow ultralow temperature extraction process comprises the following steps:
s1, pretreatment: crushing the roasted coffee beans in a low-temperature environment to obtain coffee powder;
s2, low-temperature extraction: putting coffee powder into a low-temperature extraction device, pressurizing pure water and spraying the pure water reversely from bottom to top to extract flavor components in coffee powder particles and cooling to obtain primary extraction liquid;
pressurizing the primary extract liquor and spraying the primary extract liquor from bottom to top in a reverse direction to further extract flavor components and cooling to obtain secondary extract liquor;
pressurizing the secondary extraction liquid, reversely spraying the secondary extraction liquid from bottom to top, further extracting flavor components, cooling to obtain a tertiary extraction liquid, and discharging the tertiary extraction liquid; wherein, the concentration of the primary extraction liquid, the secondary extraction liquid and the tertiary extraction liquid is gradually increased;
s3, post-processing: and (4) sequentially centrifuging, sterilizing and cooling the extract obtained by low-temperature extraction to obtain the required coffee liquid.
A low-temperature extraction device for coffee material liquid self-identification steady flow ultralow-temperature extraction process comprises: the extraction tank comprises an extraction inner cylinder, a filtering assembly and a heating assembly, the heating assembly is used for adjusting the temperature inside the extraction inner cylinder, the filtering assembly with three sequentially increasing meshes is sequentially arranged inside the extraction inner cylinder from bottom to top, a first liquid outlet, a second liquid outlet and a third liquid outlet which are positioned at the upper side of each group of filtering assembly are sequentially arranged on the inner wall of the extraction inner cylinder from bottom to top, and the extraction inner cylinder, the liquid outlet pipeline assembly, the condensation tank and the liquid inlet pipeline assembly are sequentially communicated;
the liquid inlet pipeline component is used for spraying pressurized liquid from the lower side of the extraction inner barrel so as to extract flavor components in coffee powder particles in the extraction inner barrel from bottom to top.
Preferably, the liquid inlet pipeline assembly is used for inputting pure water into the extraction inner cylinder at a certain pressure during primary extraction, and an obtained primary extraction liquid can flow into the liquid outlet pipeline assembly from the first liquid outlet after being filtered by the first group of filtering assemblies;
the liquid inlet pipeline assembly is used for circularly inputting primary extraction liquid into the extraction inner cylinder at higher pressure during secondary extraction, and the obtained secondary extraction liquid can flow into the liquid outlet pipeline assembly from the second liquid outlet after being filtered by the second group of filtering assemblies;
the liquid inlet pipeline assembly is used for circularly inputting secondary extraction liquid into the extraction inner cylinder at higher pressure during tertiary extraction, and the obtained tertiary extraction liquid can flow into the liquid outlet pipeline assembly from the third liquid outlet and is discharged to the outside of the low-temperature extraction device after being filtered by the third group of filtering assemblies;
the extraction inner tube downside is provided with row cinder notch, row cinder notch is used for discharging the coffee powder residue after the extraction of cubic.
Preferably, extraction inner tube downside is provided with the feed liquor pipe, feed liquor pipe output is provided with the shower head, extraction inner tube one side is provided with into powder pipe, the play powder end that enters powder pipe is located first group the filter component downside, it can be closed to advance powder pipe play powder end.
Preferably, the first group of filtering assemblies comprises two first filters arranged in a superposed manner, the second group of filtering assemblies comprises two second filters arranged in a superposed manner, the third group of filtering assemblies comprises two third filters arranged in a superposed manner, and the mesh number of the first filters, the mesh number of the second filters and the mesh number of the third filters are increased progressively.
Preferably, the liquid inlet pipeline assembly comprises a water inlet pipe, an extension pipe, a circulation input pipe and a booster pump, the water inlet pipe and the circulation input pipe are both arranged at the liquid inlet end of the extension pipe, the liquid outlet end of the extension pipe is communicated with the liquid inlet pipe, and the booster pump is arranged on the extension pipe;
the water inlet pipe is used for connecting an external water pipeline, and the circulating input pipe is communicated with the condensing tank.
Preferably, the condensing tank comprises a tank body, a spiral pipeline, a circulating output pipe, a liquid outlet pipe and a refrigerating unit, wherein the refrigerating unit is used for regulating and controlling the temperature of the cooling liquid in the tank body, the spiral pipeline is arranged in the tank body, an input pipe and an output pipe which are arranged at two ends of the spiral pipeline respectively extend to the outside of the tank body, the input pipe is communicated with the liquid outlet pipeline assembly, and the circulating output pipe and the liquid outlet pipe are both arranged at the liquid outlet end of the output pipe;
the liquid outlet pipe is used for connecting an external liquid conveying pipeline, and the circulating output pipe is communicated with the circulating input pipe.
Preferably, the liquid outlet pipeline assembly comprises a liquid outlet main pipe and liquid outlet branch pipes, the liquid inlet end of the liquid outlet main pipe is connected with three liquid outlet branch pipes, the liquid outlet branch pipes are respectively connected with the first liquid outlet, the second liquid outlet and the third liquid outlet, and the liquid outlet end of the liquid outlet main pipe is communicated with the input pipe.
Preferably, the first liquid outlet, the second liquid outlet, the third liquid outlet, the circulating output pipe, the liquid outlet pipe and the water inlet pipe are respectively provided with a one-way valve, and the maximum water capacity of the spiral pipeline is larger than the volume of the tertiary extraction liquid obtained after the tertiary extraction.
Preferably, the heating assembly comprises a jacket, the jacket is arranged on the outer side of the extraction inner barrel, a spiral spoiler is arranged on the outer wall of the extraction inner barrel, and a steam inlet and a steam outlet are respectively arranged at the upper end and the lower end of the jacket.
(III) advantageous effects
Compared with the prior art, the invention provides a coffee material liquid self-identification steady-flow ultralow-temperature extraction process and application thereof, and the coffee material liquid self-identification steady-flow ultralow-temperature extraction process has the following beneficial effects:
1. the coffee liquid self-identification steady-flow ultralow-temperature extraction process comprises the steps of pretreating, crushing roasted coffee beans in a low-temperature environment to obtain coffee powder, putting the coffee powder into a low-temperature extraction device for extraction, carrying out aftertreatment on extract liquor, and sequentially centrifuging, sterilizing and cooling the extract liquor obtained by low-temperature extraction to obtain the required coffee liquid.
2. The coffee material liquid self-identification steady flow ultralow temperature extraction process comprises the steps of sequentially arranging a first filter, a second filter and a third filter with sequentially increasing mesh numbers from bottom to top in an extraction inner cylinder, extracting coffee powder particles by pure water for the first time to extract partial flavor components, filtering by the first filter, cooling by a condensing tank to reserve the flavor components in the extraction liquid to the maximum extent to obtain a primary extraction liquid, circularly extracting the primary extraction liquid in the extraction inner cylinder, filtering by the second filter, cooling by the condensing tank to obtain a secondary extraction liquid with increased concentration, extracting the residual coffee powder particles by the primary extraction liquid for the further more flavor components, circularly extracting the secondary extraction liquid in the extraction inner cylinder again to obtain a tertiary extraction liquid with increased concentration, circularly extracting for the third time in the same extraction tank, cooling the extraction liquid in time after each extraction to reserve the flavor components, effectively reducing extraction cost and labor intensity, and ensuring good extraction effect.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
FIG. 2 is a schematic diagram of a partial cross-sectional structure of an extraction tank of the low-temperature extraction apparatus of the present invention;
FIG. 3 is an exploded schematic view of a cryogenic extraction plant of the present invention;
FIG. 4 is a schematic diagram of the structure of the low-temperature extraction apparatus of the present invention;
FIG. 5 is a schematic cross-sectional view of a condensing tank of the low-temperature extraction apparatus of the present invention.
In the figure: 1. an extraction tank; 11. an extraction inner cylinder; 111. a powder inlet pipe; 112. a liquid inlet pipe; 113. a first liquid outlet; 114. a second liquid outlet; 115. a third liquid outlet; 116. a slag discharge port; 12. a filter assembly; 121. A first filter; 122. a second filter; 123. a third filter; 13. a jacket; 131. a spoiler; 132. a steam inlet; 133. a steam outlet; 2. a condensing tank; 21. a tank body; 22. a helical conduit; 221. An input tube; 222. an output pipe; 23. circulating an output pipe; 24. a liquid outlet pipe; 25. a refrigeration unit; 3. a liquid inlet pipeline assembly; 31. a water inlet pipe; 32. an extension pipe; 33. a circulating input pipe; 34. a booster pump; 4. a liquid outlet pipe assembly; 41. a liquid outlet main pipe; 42. and (4) a liquid outlet branch pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, a coffee liquid self-identification steady flow ultra-low temperature extraction process includes the following steps:
s1, pretreatment: crushing the roasted coffee beans in a low-temperature environment to obtain coffee powder;
s2, low-temperature extraction: putting coffee powder into a low-temperature extraction device, pressurizing pure water and spraying the pure water reversely from bottom to top to extract flavor components in coffee powder particles and cooling to obtain primary extraction liquid;
pressurizing the primary extract liquor and spraying the primary extract liquor from bottom to top in a reverse direction to further extract flavor components and cooling to obtain secondary extract liquor;
pressurizing the secondary extraction liquid, reversely spraying the secondary extraction liquid from bottom to top, further extracting flavor components, cooling to obtain a tertiary extraction liquid, and discharging the tertiary extraction liquid; wherein, the concentration of the primary extraction liquid, the secondary extraction liquid and the tertiary extraction liquid is gradually increased;
s3, post-processing: and (4) sequentially centrifuging, sterilizing and cooling the extract obtained by low-temperature extraction to obtain the required coffee liquid.
Referring to fig. 2 and 3, a low-temperature extraction apparatus for coffee liquid self-identification steady-flow ultra-low-temperature extraction process includes: the extraction tank 1 comprises an extraction inner barrel 11, a filtering component 12 and a heating component, the heating component is used for adjusting the temperature inside the extraction inner barrel 11, three groups of filtering components 12 with sequentially increasing meshes are sequentially arranged inside the extraction inner barrel 11 from bottom to top, a first liquid outlet 113, a second liquid outlet 114 and a third liquid outlet 115 which are positioned at the upper side of each group of filtering components 12 are sequentially arranged on the inner wall of the extraction inner barrel 11 from bottom to top, and the extraction inner barrel 11, the liquid outlet pipeline component 4, the condensation tank 2 and the liquid inlet pipeline component 3 are sequentially communicated; specifically, the internal temperature of the extraction inner barrel 11 is preferably 30 ℃, and the cooling temperature of the condensation tank 2 is preferably 5 ℃;
the liquid inlet pipeline component 3 is used for spraying pressurized liquid from the lower side of the extraction inner barrel 11 so as to extract flavor components in coffee powder particles in the extraction inner barrel 11 from bottom to top, so that the liquid sprayed out at a certain water pressure can flow out from the corresponding liquid outlet after being filtered by the filtering component 12, and the corresponding water pressure is increased in sequence when the liquid flows out from the first liquid outlet 113, the second liquid outlet 114 and the third liquid outlet 115 respectively.
Further, referring to fig. 2-4, the liquid inlet pipe assembly 3 is configured to input pure water into the extraction inner barrel 11 at a certain pressure during primary extraction, and the obtained primary extraction liquid is filtered by the first group of filtering assemblies 12 and then flows into the liquid outlet pipe assembly 4 from the first liquid outlet 113, so that coffee powder particles can be extracted by primary extraction with pure water to extract a part of flavor components on the surfaces of the coffee powder particles, and the extraction liquid is filtered by the first group of filtering assemblies 12 and then cooled by the condensing tank 2 to retain the flavor components in the extraction liquid to the maximum extent to obtain the primary extraction liquid, and the coffee powder particles that cannot pass through the first group of filtering assemblies 12 remain in the lower area of the first group of filtering assemblies 12; specifically, the water pressure when the pure water enters the extraction inner cylinder 11 during the primary extraction is preferably 3Mpa;
the liquid inlet pipeline component 3 is used for circularly inputting the primary extraction liquid into the extraction inner cylinder 11 at a higher pressure during secondary extraction, the obtained secondary extraction liquid can flow into the liquid outlet pipeline component 4 from the second liquid outlet 114 after being filtered by the second group of filtering components 12, so that the primary extraction liquid sprayed into the extraction inner cylinder 11 is circularly extracted, is filtered by the second group of filtering components 12 with increased meshes, is cooled by the condensing tank 2 to retain flavor components in the extraction liquid to the maximum extent to obtain the secondary extraction liquid with increased concentration, and coffee powder particles remained in the lower side area of the first group of filtering components 12 during primary extraction can be further extracted by the primary extraction liquid to obtain more flavor components, are dissolved in the secondary extraction liquid, and coffee powder particles which cannot pass through the second group of filtering components 12 remain in the lower side area of the second group of filtering components 12 and fall into the lower side area of the first group of filtering components 12; specifically, the water pressure of the primary extraction liquid entering the extraction inner cylinder 11 during the secondary extraction is preferably 4Mpa;
the liquid inlet pipeline component 3 is used for circularly inputting the secondary extraction liquid into the extraction inner cylinder 11 at a higher pressure during the tertiary extraction, the obtained tertiary extraction liquid can flow into the liquid outlet pipeline component 4 from the third liquid outlet 115 after being filtered by the third group of filtering components 12 and is discharged to the outside of the low-temperature extraction device, so that the secondary extraction liquid sprayed into the extraction inner cylinder 11 is circularly extracted, is filtered by the third group of filtering components 12 with increased meshes, is cooled by the condensing tank 2 to retain the flavor components in the extraction liquid to the maximum extent to obtain the tertiary extraction liquid with increased concentration, and coffee powder particles remained in the lower side area of the second group of filtering components 12 during the primary extraction and the secondary extraction can be further extracted by the secondary extraction liquid to obtain more flavor components, are dissolved into the tertiary extraction liquid, and coffee powder particles which cannot pass through the third group of filtering components 12 remain in the lower side area of the third group of filtering components 12 and fall into the lower side area of the first group of filtering components 12; specifically, the water pressure of the secondary extraction liquid entering the extraction inner cylinder 11 during the tertiary extraction is preferably 5Mpa;
a residue discharge port 116 is arranged at the lower side of the extraction inner cylinder 11, and the residue discharge port 116 is used for discharging coffee powder residues after three times of extraction, so that residual coffee powder particles with the most extracted flavor components after three times of extraction can be discharged through the residue discharge port 116.
Further, referring to fig. 2, a liquid inlet pipe 112 is disposed at a lower side of the inner extraction cylinder 11, a shower head is disposed at an output end of the liquid inlet pipe 112, so that pressurized liquid entering the inner extraction cylinder 11 from the liquid inlet pipe 112 can be sprayed from bottom to top, so as to more fully extract flavor components in coffee powder particles in the inner extraction cylinder 11, a powder inlet pipe 111 is disposed at one side of the inner extraction cylinder 11, a powder outlet end of the powder inlet pipe 111 is disposed at a lower side of the first group of filter assemblies 12, and a powder outlet end of the powder inlet pipe 111 can be closed, so that the powder outlet end of the powder inlet pipe 111 is closed after the coffee powder is finished, thereby preventing the liquid from directly overflowing from the powder inlet pipe 111, and preventing the powder from being adhered to an inner wall of the powder inlet pipe 111 when the inner wall of the powder inlet pipe 111 is wetted and subsequently feeding the coffee powder.
Further, referring to fig. 2, the first group of filter assemblies 12 includes two first filters 121 disposed in a stacked manner, the second group of filter assemblies 12 includes two second filters 122 disposed in a stacked manner, the third group of filter assemblies 12 includes two third filters 123 disposed in a stacked manner, and the mesh numbers of the first filters 121, the second filters 122 and the third filters 123 are increased. Specifically, the first filter 121, the second filter 122 and the third filter 123 are all screens, and the first filter 121, the second filter 122 and the third filter 123 are preferably 60 meshes, 80 meshes and 100 meshes, respectively.
Further, referring to fig. 4, the liquid inlet pipeline assembly 3 includes a water inlet pipe 31, an extension pipe 32, a circulation input pipe 33 and a booster pump 34, wherein the water inlet pipe 31 and the circulation input pipe 33 are both disposed at a liquid inlet end of the extension pipe 32, a liquid outlet end of the extension pipe 32 is communicated with the liquid inlet pipe 112, and the booster pump 34 is disposed on the extension pipe 32, so that liquid flowing through the extension pipe 32 can be boosted by the booster pump 34;
the water inlet pipe 31 is used for connecting an external water pipeline, and the circulating input pipe 33 is communicated with the condensing tank 2.
Further, referring to fig. 3-5, the condensing tank 2 includes a tank 21, a spiral pipeline 22, a circulation output pipe 23, a liquid outlet pipe 24 and a refrigerating unit 25, the refrigerating unit 25 is used for regulating and controlling the temperature of the cooling liquid inside the tank 21, the spiral pipeline 22 is disposed inside the tank 21, an input pipe 221 and an output pipe 222 disposed at two ends of the spiral pipeline 22 respectively extend to the outside of the tank 21, the input pipe 221 is communicated with the liquid outlet pipe assembly 4, so that the extraction liquid inside the inner extraction cylinder 11 can flow through the input pipe 221, the spiral pipeline 22 and the output pipe 222 in sequence after flowing into the liquid outlet pipe assembly 4, the extraction liquid can be sufficiently cooled by the cooling water inside the tank 21 when flowing through the spiral pipeline 22, and the circulation output pipe 23 and the liquid outlet pipe 24 are both disposed at the liquid outlet end of the output pipe 222;
specifically, the maximum water capacity of the spiral pipe 22 is greater than the volume of the three extraction solutions obtained after the third extraction, so that the spiral pipe 22 can completely contain the same batch of extraction solutions flowing out of the inner extraction barrel 11 during each extraction, that is: after the primary extraction liquid completely flows into the spiral pipeline 22, the primary extraction liquid flows into the extraction inner cylinder 11 from the spiral pipeline 22 for secondary extraction, so that the primary extraction liquid and the secondary extraction liquid are prevented from being mixed in the extraction inner cylinder 11, the volume of a cavity at the upper part of the spiral pipeline 22 is gradually increased in the process until the secondary extraction liquid starts to flow into the spiral pipeline 22, the primary extraction liquid and the secondary extraction liquid coexist in the spiral pipeline 22, and a cavity with a certain volume exists between the primary extraction liquid and the secondary extraction liquid, so that the primary extraction liquid and the secondary extraction liquid are automatically prevented from being mixed in the spiral pipeline 22; after the secondary extraction liquid completely flows into the spiral pipeline 22, the secondary extraction liquid flows into the extraction inner cylinder 11 from the spiral pipeline 22 for tertiary extraction, so that the secondary extraction liquid and the tertiary extraction liquid are prevented from being mixed in the extraction inner cylinder 11, the volume of the cavity at the upper part of the spiral pipeline 22 is gradually increased in the process until the tertiary extraction liquid starts to flow into the spiral pipeline 22, the secondary extraction liquid and the tertiary extraction liquid coexist in the spiral pipeline 22, and a cavity with a certain volume is formed between the secondary extraction liquid and the tertiary extraction liquid, so that the secondary extraction liquid and the tertiary extraction liquid are automatically prevented from being mixed in the spiral pipeline 22, further more flavor components in coffee powder particles can be extracted in each extraction, the concentration of the obtained coffee extraction liquid is increased, the extraction effect is improved, in the extraction process, the extraction liquid does not have a static state and always flows, the extraction liquid can be prevented from being solidified in the spiral pipeline 22 due to low cooling temperature, and further the flavor components of the coffee extraction liquid are prevented from being lost and are not also not solidified.
The liquid outlet pipe 24 is used for connecting an external liquid conveying pipeline, and the circulating output pipe 23 is communicated with the circulating input pipe 33.
Further, referring to fig. 4 and 5, the liquid outlet pipe assembly 4 includes a main liquid outlet pipe 41 and three branch liquid outlet pipes 42, the liquid inlet end of the main liquid outlet pipe 41 is connected to the three branch liquid outlet pipes 42, the branch liquid outlet pipes 42 are respectively connected to the first liquid outlet 113, the second liquid outlet 114 and the third liquid outlet 115, and the liquid outlet end of the main liquid outlet pipe 41 is connected to the input pipe 221.
Further, referring to fig. 4 and 5, the first liquid outlet 113, the second liquid outlet 114, the third liquid outlet 115, the circulation output pipe 23, the liquid outlet pipe 24 and the water inlet pipe 31 are respectively provided with a check valve, so that the flow state of each pipeline can be controlled by the check valve to adjust the flow direction of the liquid;
specifically, during primary extraction, only the check valves corresponding to the water inlet pipe 31 and the first liquid outlet 113 are opened, pure water can be sequentially conveyed to the extension pipe 32 and the liquid inlet pipe 112 through the water inlet pipe 31, and is sprayed into the extraction inner cylinder 11 through the spray header at a water pressure of 3Mpa, the obtained primary extraction liquid can flow into the corresponding liquid outlet branch pipes 42 from the first liquid outlet 113 after being filtered by the two first filters 121, and then sequentially flows through the liquid outlet main pipe 41, the input pipe 221, the spiral pipeline 22 and the output pipe 222;
until the primary extraction liquid all flows into the spiral pipeline 22, only the check valves corresponding to the circulating output pipe 23 and the second liquid outlet 114 are opened, and secondary extraction is started, so that the primary extraction liquid flowing to the output pipe 222 sequentially flows through the circulating input pipe 33, the extension pipe 32 and the liquid inlet pipe 112, and is sprayed into the extraction inner cylinder 11 through the spray header at a water pressure of 4Mpa, the obtained secondary extraction liquid can flow into the corresponding liquid outlet branch pipes 42 from the second liquid outlet 114 after being filtered by the two second filters 122, and then sequentially flows through the liquid outlet main pipe 41, the input pipe 221, the spiral pipeline 22 and the output pipe 222;
until the secondary extraction liquid all flows into the spiral pipeline 22, only keeping the one-way valves corresponding to the circulation output pipe 23 and the third liquid outlet 115 open, and starting to perform tertiary extraction, so that the secondary extraction liquid flowing to the output pipe 222 sequentially flows through the circulation input pipe 33, the extension pipe 32 and the liquid inlet pipe 112, and is sprayed into the extraction inner cylinder 11 through the spray header at a water pressure of 5Mpa, and the obtained tertiary extraction liquid is filtered by the two third filters 123, can flow into the corresponding liquid outlet branch pipes 42 from the third liquid outlet 115, and then sequentially flows through the liquid outlet main pipe 41, the input pipe 221, the spiral pipeline 22 and the output pipe 222;
after the secondary extraction liquid in the spiral pipeline 22 completely flows through the extension pipe 32, only the one-way valves corresponding to the third liquid outlet 115 and the liquid outlet pipe 24 are kept open, so that the tertiary extraction liquid can flow from the output pipe 222 to the liquid outlet pipe 24 and is discharged to the outside of the device, and extraction is completed.
Specifically, a flow meter is installed at the connection between the main liquid outlet pipe 41 and the input pipe 221, and is used for monitoring the liquid flow flowing through the main liquid outlet pipe 41 in real time, that is: the flow of the extraction liquid flowing out from the first liquid outlet 113, the second liquid outlet 114 and the third liquid outlet 115 is automatically identified in the three-time extraction process, the flow meter is electrically connected with the booster pump 34, a constant flow value is set before extraction, when the flow meter monitors that the liquid flow flowing through the liquid outlet main pipe 41 exceeds the error range of the set value, the booster pump 34 can automatically adjust the output pressure to change the water pressure in the extraction inner barrel 11, so that the liquid flow flowing out from the extraction inner barrel 11 is changed until the flow monitored by the flow meter recovers the set value, the flow rate of the extraction liquid flowing out from the extraction inner barrel 11 in the three-time extraction process is consistent, the flow rate of the liquid in the three-time extraction process is stable, and the self-identification steady flow effect is realized.
Further, referring to fig. 2, the heating assembly includes a jacket 13, the jacket 13 is disposed outside the inner extraction barrel 11, a spiral spoiler 131 is disposed on an outer wall of the inner extraction barrel 11, a steam inlet 132 and a steam outlet 133 are respectively disposed at upper and lower ends of the jacket 13, so that steam enters a cavity between the jacket 13 and the inner extraction barrel 11 from the steam inlet 132, can circulate around the outer wall of the inner extraction barrel 11 along a steam channel formed by the spoiler 131, and is finally discharged from the steam outlet 133, and the steam circulates into the cavity between the jacket 13 and the inner extraction barrel 11 to adjust the internal temperature of the inner extraction barrel 11. Specifically, the internal temperature of the extraction inner barrel 11 is preferably set to 20 to 40 ℃.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A coffee material liquid self-identification steady flow ultralow temperature extraction process is characterized by comprising the following steps:
s1, pretreatment: crushing the roasted coffee beans in a low-temperature environment to obtain coffee powder;
s2, low-temperature extraction: putting coffee powder into a low-temperature extraction device, pressurizing pure water and spraying the pure water reversely from bottom to top to extract flavor components in coffee powder particles and cooling to obtain primary extraction liquid;
pressurizing the primary extract liquor and spraying the primary extract liquor from bottom to top in a reverse direction to further extract flavor components and cooling to obtain secondary extract liquor;
pressurizing the secondary extraction liquid, reversely spraying the secondary extraction liquid from bottom to top, further extracting flavor components, cooling to obtain a third extraction liquid, and discharging the third extraction liquid; wherein, the concentration of the primary extraction liquid, the secondary extraction liquid and the tertiary extraction liquid is gradually increased;
s3, post-processing: and (4) sequentially centrifuging, sterilizing and cooling the extract obtained by low-temperature extraction to obtain the required coffee liquid.
2. A low-temperature extraction device for coffee material liquid self-identification steady flow ultralow-temperature extraction process comprises: extraction jar (1), condensate tank (2), liquid inlet pipe assembly (3) and play liquid pipeline subassembly (4), its characterized in that: the extraction tank (1) comprises an extraction inner cylinder (11), a filtering component (12) and a heating component, wherein the heating component is used for adjusting the temperature inside the extraction inner cylinder (11), the filtering component (12) with three sequentially increasing meshes is sequentially arranged inside the extraction inner cylinder (11) from bottom to top, a first liquid outlet (113), a second liquid outlet (114) and a third liquid outlet (115) which are positioned at the upper side of the filtering component (12) of each group are sequentially arranged on the inner wall of the extraction inner cylinder (11) from bottom to top, and the extraction inner cylinder (11), the liquid outlet pipeline component (4), the condensation tank (2) and the liquid inlet pipeline component (3) are sequentially communicated;
the liquid inlet pipeline assembly (3) is used for spraying pressurized liquid from the lower side of the extraction inner barrel (11) so as to extract flavor components in coffee powder particles in the extraction inner barrel (11) from bottom to top.
3. The low-temperature extraction device for the coffee material liquid self-identification flow-stabilizing ultralow-temperature extraction process as claimed in claim 2, wherein: the liquid inlet pipeline component (3) is used for inputting pure water into the extraction inner cylinder (11) at a certain pressure during primary extraction, and the obtained primary extraction liquid can flow into the liquid outlet pipeline component (4) from the first liquid outlet (113) after being filtered by the first group of filtering components (12);
the liquid inlet pipeline component (3) is used for circularly inputting the primary extraction liquid into the extraction inner cylinder (11) at higher pressure during secondary extraction, and the obtained secondary extraction liquid can flow into the liquid outlet pipeline component (4) from the second liquid outlet (114) after being filtered by the second group of filtering components (12);
the liquid inlet pipeline component (3) is used for circularly inputting secondary extraction liquid into the extraction inner cylinder (11) at higher pressure during tertiary extraction, and the obtained tertiary extraction liquid can flow into the liquid outlet pipeline component (4) from the third liquid outlet (115) after being filtered by the third group of filtering components (12) and is discharged to the outside of the low-temperature extraction device;
a residue discharge port (116) is formed in the lower side of the extraction inner barrel (11), and the residue discharge port (116) is used for discharging coffee powder residues after three times of extraction.
4. The low-temperature extraction device for the coffee material liquid self-identification flow-stabilizing ultra-low-temperature extraction process according to claim 3, characterized in that: extract inner tube (11) downside and be provided with feed liquor pipe (112), feed liquor pipe (112) output is provided with the shower head, extract inner tube (11) one side and be provided with into powder pipe (111), the play powder end that advances powder pipe (111) is located first group filtering component (12) downside, it can be closed to advance powder pipe (111) play powder end.
5. The low-temperature extraction device for the coffee material liquid self-identification flow-stabilizing ultralow-temperature extraction process as claimed in claim 4, wherein: the first group of filtering assemblies (12) comprises two first filters (121) which are arranged in an overlapping mode, the second group of filtering assemblies (12) comprises two second filters (122) which are arranged in an overlapping mode, the third group of filtering assemblies (12) comprises two third filters (123) which are arranged in an overlapping mode, and the mesh numbers of the first filters (121), the second filters (122) and the third filters (123) are increased in an increasing mode.
6. The low-temperature extraction device for the coffee material liquid self-identification flow-stabilizing ultralow-temperature extraction process as claimed in claim 5, wherein: the liquid inlet pipeline assembly (3) comprises a water inlet pipe (31), an extension pipe (32), a circulating input pipe (33) and a booster pump (34), the water inlet pipe (31) and the circulating input pipe (33) are both arranged at the liquid inlet end of the extension pipe (32), the liquid outlet end of the extension pipe (32) is communicated with the liquid inlet pipe (112), and the booster pump (34) is arranged on the extension pipe (32);
the water inlet pipe (31) is used for being connected with an external water pipeline, and the circulating input pipe (33) is communicated with the condensing tank (2).
7. The low-temperature extraction device for the coffee material liquid self-identification flow-stabilizing ultralow-temperature extraction process as claimed in claim 6, wherein: the condensing tank (2) comprises a tank body (21), a spiral pipeline (22), a circulating output pipe (23), a liquid outlet pipe (24) and a refrigerating unit (25), wherein the refrigerating unit (25) is used for regulating and controlling the temperature of cooling liquid in the tank body (21), the spiral pipeline (22) is arranged in the tank body (21), an input pipe (221) and an output pipe (222) which are arranged at two ends of the spiral pipeline (22) respectively extend to the outside of the tank body (21), the input pipe (221) is communicated with the liquid outlet pipe assembly (4), and the circulating output pipe (23) and the liquid outlet pipe (24) are both arranged at the liquid outlet end of the output pipe (222);
the liquid outlet pipe (24) is used for connecting an external liquid conveying pipeline, and the circulating output pipe (23) is communicated with the circulating input pipe (33).
8. The low-temperature extraction device for the coffee material liquid self-identification flow-stabilizing ultralow-temperature extraction process as claimed in claim 7, wherein: go out liquid pipe assembly (4) including going out liquid and being responsible for (41) and going out liquid branch pipe (42), it is connected with threely to go out liquid and being responsible for (41) feed liquor end go out liquid branch pipe (42), go out liquid branch pipe (42) respectively with first liquid outlet (113), second liquid outlet (114) and third liquid outlet (115) are connected, it goes out liquid and is responsible for (41) play liquid end with input tube (221) are linked together.
9. The low-temperature extraction device for the coffee material liquid self-identification flow-stabilizing ultralow-temperature extraction process as claimed in claim 8, wherein: be provided with the check valve on first liquid outlet (113), second liquid outlet (114), third liquid outlet (115), circulation output tube (23), drain pipe (24) and inlet tube (31) respectively, the biggest water capacity of helical tube (22) is greater than the volume of the cubic extract liquid that obtains after the extraction of the third time.
10. The low-temperature extraction device for the coffee material liquid self-identification flow-stabilizing ultralow-temperature extraction process, according to claim 9, is characterized in that: the heating assembly comprises a jacket (13), the jacket (13) is arranged on the outer side of the extraction inner barrel (11), a spiral spoiler (131) is arranged on the outer wall of the extraction inner barrel (11), and a steam inlet (132) and a steam outlet (133) are respectively arranged at the upper end and the lower end of the jacket (13).
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| CN202211251597.8A CN115779484B (en) | 2022-10-13 | 2022-10-13 | Self-identification steady-flow ultralow-temperature extraction process for coffee liquid and application thereof |
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