Centrifugal extractor with cyclic extraction function

Abstract

The present invention belongs to the technical field of beverage extraction equipment, and specifically provides a centrifugal extractor with a cyclic extraction function. The centrifugal extractor includes a liquid storage container, a driving device, a filter container, a reflux cover and an impeller. The driving device is relatively fixed to the liquid storage container. The filter container is arranged in the liquid storage container and is connected to the driving device. The reflux cover is relatively fixed to the liquid storage container in the liquid storage container, the reflux cover is buckled on the outside of the filter container, and the reflux cover is defined by a reflux channel extending from its bottom end to the top side of the filter container. The impeller is arranged in the liquid storage container and is connected to the driving device, at least a part of the impeller is radially located on the outside of the filter container, and the impeller is located on the bottom side of the reflux cover to drive the liquid in the liquid storage container to flow back to the filter container via the reflux channel.

Description

Technical Field

[0001] The invention belongs to the technical field of beverage extraction equipment, and specifically provides a centrifugal extraction machine with a cyclic extraction function. Background Art

[0002] Existing extraction equipment generally extracts coffee to be extracted by soaking, hot water brewing, cooking, etc., so as to extract the target substance in the extract and obtain the final drinking solution.

[0003] The principle of the above extraction method is to make the target substance in the coffee waiting to be extracted dissolve and diffuse into the solution by molecular diffusion. It is not only time-consuming, but also makes the extract still retain more target substances after extraction, the extraction is incomplete, and even affects the taste of the final drinking solution. Summary of the invention

[0004] One object of the present invention is to solve the problem that the existing extraction equipment has poor extraction integrity of the extract.

[0005] Another object of the present invention is to realize cyclic extraction of the extract.

[0006] To achieve the above object, the present invention provides a centrifugal extractor, comprising:

[0007] liquid storage container;

[0008] A driving device, fixed relatively to the liquid storage container;

[0009] A filtering container, disposed in the liquid storage container and drivingly connected to the driving device;

[0010] A reflux cover is fixedly arranged in the liquid storage container relative to the liquid storage container, the reflux cover is buckled on the outside of the filter container, and the reflux cover defines a reflux channel extending from its bottom end to the top side of the filter container;

[0011] An impeller is arranged in the liquid storage container and is drivingly connected to the driving device. At least a portion of the impeller is radially located outside the filter container, and the impeller is located on the bottom side of the reflux cover to drive the liquid in the liquid storage container to flow back to the filter container through the reflux channel.

[0012] Optionally, the liquid inlet of the reflux channel is an annular opening formed at the bottom end of the reflux cover.

[0013] Optionally, the liquid inlet is configured as a tapered structure that gradually becomes smaller from bottom to top on a radial cross section of the reflux cup.

[0014] Optionally, the outer end of the liquid inlet on the radial cross section of the return cup extends to the outer peripheral surface of the return cup, and the inner end of the liquid inlet on the radial cross section of the return cup extends to the inner peripheral surface of the return cup.

[0015] Optionally, the return cover comprises an inner cover and an outer cover which are fixed together or made in one piece, and the inner cover is spaced apart from the outer cover so that the return channel is formed between the inner cover and the outer cover.

[0016] Optionally, the tops of the inner cover and the outer cover are both provided with through holes, so that the liquid outlet of the reflux channel is defined as an annular opening formed between the two through holes.

[0017] Optionally, the height of the reflux channel decreases successively from the liquid outlet to the liquid inlet, so that the liquid in the reflux channel can flow back into the liquid storage container under the action of its own gravity; and / or, the aperture of the through hole on the inner cover is smaller than the aperture of the through hole on the outer cover, so that the outer cover blocks the liquid outlet.

[0018] Optionally, the return cover further includes connecting ribs arranged between the inner cover and the outer cover, so that the inner cover and the outer cover are fixedly connected through the connecting ribs.

[0019] Optionally, the impeller includes a hub disposed on the bottom side of the filter container and a plurality of spiral blades disposed radially outside the hub, and the blades are located radially outside the filter container.

[0020] Optionally, the top end of the blade is in clearance fit or sliding contact with the bottom end of the reflow channel.

[0021] Optionally, a groove recessed toward the back side of the blade is provided at the top end of the blade, and the groove is used to guide the liquid driven by the blade to the liquid inlet of the reflux channel.

[0022] Optionally, in the radial direction of the impeller, the depth of the groove gradually increases towards the direction approaching the liquid inlet; in the axial direction of the impeller, the depth of the groove gradually increases towards the direction approaching the return cup.

[0023] Optionally, the blade is provided with a rib protruding toward the front of the blade at the outer end in the radial direction of the impeller, so as to prevent the liquid driven by the blade from separating from the blade under the action of centrifugal force.

[0024] Optionally, a snap-fit ​​structure is provided on one of the liquid storage container and the reflux cover, and a snap-fitting structure is provided on the other of the liquid storage container and the reflux cover, so that the reflux cover can be snap-fitted to the liquid storage container through the snap-fitting structure and the snap-fitting structure.

[0025] Optionally, the snap-fit ​​structure is a conical slot provided on the liquid storage container, and the snap-fitting structure is a conical protrusion provided on the return cover; the conical protrusion is removably inserted into the conical slot to fix the return cover and the filter container together in the radial and circumferential directions.

[0026] Optionally, the driving device includes a motor arranged on the outside of the liquid storage container and a driving disk arranged on the inside of the liquid storage container; the hub and the driving disk are plugged together, and the hub is fixedly connected to the filter container to facilitate the installation and disassembly of the impeller and the filter container.

[0027] Optionally, the wheel hub is provided with a plurality of pins extending downward, and the drive disk is provided with a plurality of sockets opening upward, and the pins can be plugged into the sockets to plug the wheel hub and the drive disk together.

[0028] Optionally, the centrifugal extraction machine further comprises a body, and the liquid storage container and the driving device are both mounted on the body; and / or, the centrifugal extraction machine is suitable for extracting coffee.

[0029] Based on the above description, it can be understood by those skilled in the art that, in the above technical solution of the present invention, by configuring the filter container driven by the driving device, the filter container can centrifugally extract the object to be extracted placed therein by rotating, and the extracted target substance is thrown out of the filter container. During the centrifugal extraction, it is easier to throw the target substance on the object to be extracted out of the filter container, so the centrifugal extractor of the present invention improves the completeness of its extraction of the object to be extracted.

[0030] At the same time, by configuring a reflux hood with a reflux channel and configuring an impeller that drives the liquid in the liquid storage container to reflux to the filter container through the reflux channel, the present invention can make the liquid circulate between the filter container and the liquid storage container to perform cyclic extraction of the to-be-extracted. Therefore, the present invention can achieve rapid and complete extraction of the to-be-extracted by centrifugal extraction, and also save water consumption when extracting coffee by driving the liquid to circulate.

[0031] Furthermore, by setting the liquid inlet of the reflux channel as an annular opening, the liquid driven by the impeller can enter the reflux channel 360° without dead angles. Compared with the liquid inlet in the form of a non-annular opening, the obstruction of the reflux cover to the impeller driven liquid is reduced.

[0032] Furthermore, by setting the liquid inlet as a tapered structure that gradually becomes smaller from bottom to top, the liquid inlet is not only larger, but also has the function of gathering liquid, thereby avoiding the situation where too much liquid driven by the impeller cannot enter the liquid inlet.

[0033] Furthermore, by extending the outer end of the liquid inlet to the outer circumferential surface of the reflux cup and the inner end of the liquid inlet to the inner circumferential surface of the reflux cup, the liquid inlet can basically occupy the entire bottom surface of the reflux cup, thereby improving the liquid intake capacity of the liquid inlet.

[0034] Furthermore, by making the return cover include an inner cover and an outer cover which are arranged at an interval, the return channel is formed between the inner cover and the outer cover, so that the structure of the return cover is relatively simple.

[0035] Furthermore, by providing through holes at the top of both the inner cover and the outer cover, the liquid outlet of the reflux channel is formed as a ring-shaped opening between the two through holes, thereby making the reflux cover more beautiful as a whole. In addition, the provision of the through holes also allows the user to add water to the filter container through the through holes, which is convenient for the user to add water.

[0036] Furthermore, by making the top of the impeller blades fit or slide in contact with the bottom of the reflux channel, the gap between the blades and the reflux cover is reduced, thereby reducing the leakage of liquid between the impeller and the reflux cover and improving the circulation efficiency of the centrifugal extractor for liquid.

[0037] Furthermore, by providing a groove recessed toward the back side of the blade at the top end, the liquid driven by the blade is guided to the liquid inlet of the reflux channel, so that the liquid driven by the blade can accumulate in the groove and enter the reflux channel when moving to the top end of the blade, thereby reducing the leakage of liquid at the top end of the blade.

[0038] Furthermore, by providing a rib protruding toward the front of the blade at the outer end of the impeller in the radial direction, the liquid driven by the blade is effectively prevented from separating from the blade under the action of centrifugal force, thereby reducing liquid leakage.

[0039] Furthermore, the return cover is snapped onto the liquid storage container through the snap-fit ​​structure and the snap-fit ​​matching structure, which not only facilitates the installation and removal of the return cover, but also prevents the return cover from rotating and shaking with the impeller during the rotation of the impeller.

[0040] Furthermore, by providing a plurality of downwardly extending pins on the impeller hub, providing a plurality of upwardly opening holes on the drive disk, and allowing the pins to be pluggably inserted into the holes, the hub and the drive disk are plugged together, thereby facilitating the disassembly of the impeller and the filter container, and further facilitating the user to clean the impeller and the filter container.

[0041] Other beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand the improved purposes, features and advantages of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the same reference numerals indicate the same or similar components or parts in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0043] In the attached figure:

[0044] Figure 1 is a structural exploded view of a centrifugal extractor in some embodiments of the present invention (first axonometric perspective);

[0045] Figure 2 yes Figure 1 A cross-sectional view of the centrifugal extractor along the AA direction;

[0046] Figure 3 yes Figure 1 Cross-sectional view of the middle return hood along the BB direction;

[0047] Figure 4 is a structural exploded view of a centrifugal extractor in some embodiments of the present invention (second axonometric perspective);

[0048] Figure 5 is an axonometric view of a centrifugal extractor according to some embodiments of the present invention;

[0049] Figure 6 yes Figure 5 A cross-sectional view of the centrifugal extractor along the CC direction;

[0050] Figure 7 is a schematic diagram of the extraction principle of a centrifugal extractor in some embodiments of the present invention;

[0051] Figure 8 In some embodiments of the present invention, the backflow cover edge Figure 1 Cross-sectional view in the BB direction;

[0052] Fig. 9 is an axonometric view of an impeller in some other embodiments of the present invention;

[0053] Fig.10 1 is an isometric view of blades of an impeller in some other embodiments of the present invention.

[0054] Description of reference numerals:

[0055] 001, centrifugal extractor; 002, liquid; 003, substance to be extracted;

[0056] 100, body; 101, top cavity; 102, bottom cavity; 110, knob;

[0057] 200, liquid storage container; 201, snap-fit ​​structure; 202, avoidance hole; 203, liquid discharge channel; 210, annular baffle; 220, plug;

[0058] 300, driving device; 310, motor; 320, driving disk; 321, jack;

[0059] 400, filter container;

[0060] 500, reflux cover; 501, reflux channel; 5011, liquid inlet; 5012, liquid outlet; 510, clamping structure; 521, inner cover; 522, outer cover; 5201, through hole; 523, connecting rib;

[0061] 600, impeller; 601, annular groove; 610, hub; 611, plug post; 620, blade; 621, groove; 622, rib;

[0062] 700, funnel cover;

[0063] θ, circumferential direction; z, axial direction; r, radial direction. DETAILED DESCRIPTION

[0064] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0065] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the corresponding devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0066] Furthermore, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. For example, the terms "install", "connect", "connect" and "fix", unless otherwise specifically described, can specifically be any feasible connection form such as bolt connection, screw connection, welding, plug-in, riveting, melting, and clamping.

[0067] like Figures 1 to 6 As shown, in some embodiments of the present invention, the centrifugal extractor 001 includes an optional body 100, a liquid storage container 200, a driving device 300, a filtering container 400, a reflux cover 500, an impeller 600 and an optional funnel cover 700.

[0068] The body 100 is defined with a top cavity 101 and a bottom cavity 102. The top cavity 101 is used to arrange the liquid storage container 200, the filter container 400, the backflow cover 500, the impeller 600 and the funnel cover 700, and the bottom cavity 102 is used to arrange the drive device 300. Of course, under the premise that the liquid storage container 200, the drive device 300, the filter container 400, the backflow cover 500, the impeller 600 and the funnel cover 700 can be installed, the technicians in this field can also set the body 100 to any other feasible shape, such as a hollow barrel-shaped member, as needed. Alternatively, the technicians in this field can also omit the setting of the body 100 as needed. That is, under the premise that the liquid storage container 200, the drive device 300 and the filter container 400 can be relatively fixed, the technicians in this field can also omit the body 100 as needed, or set the body 100 and the liquid storage container 200 as a whole.

[0069] The liquid storage container 200 is used to hold the liquid 002 (such as Figure 7 As shown), or liquid 002 produced during the operation of centrifugal extractor 001.

[0070] The driving device 300 is relatively fixed to the liquid storage container 200 , and can be specifically fixedly connected to the body 100 .

[0071] The filter container 400 is disposed in the liquid storage container 200 and is connected to the driving device 300 so that the filter container 400 can extract the extract 003 (such as Figure 7As shown in the figure, centrifugal extraction is performed, and the extracted liquid 002 is thrown out from the filter container 400 into the liquid storage container 200 under the action of centrifugal force.

[0072] The reflux cover 500 and the liquid storage container 200 are relatively fixedly arranged in the liquid storage container 200, the reflux cover 500 is buckled on the outside of the filter container 400, and the reflux cover 500 is defined by a reflux channel 501 extending from its bottom end to the top side of the filter container 400.

[0073] The impeller 600 is disposed in the liquid storage container 200 and is connected to the driving device 300. At least a portion of the impeller 600 is radially r (e.g. Figure 6 As shown in the figure, the impeller 600 is located on the outside of the filter container 400, and the impeller 600 is located on the bottom side of the reflux cover 500 to drive the liquid 002 in the liquid storage container 200 to flow back to the filter container 400 through the reflux channel 501.

[0074] The funnel cover 700 is removably mounted in the filter container 400 to prevent the extract 003 in the filter container 400 from being thrown out of the filter container 400. The funnel cover 700 is also used to receive water added by the user and the liquid 002 refluxed from the reflux cover 500. In addition, those skilled in the art may also omit the setting of the funnel cover 700 as needed.

[0075] It is understood by those skilled in the art that, by configuring the filter container 400 driven by the driving device 300, the filter container 400 can perform centrifugal extraction on the object to be extracted 003 placed therein by rotating, and the extracted target substance is thrown out of the filter container 400. During the centrifugal extraction, it is easier to throw the target substance on the object to be extracted 003 out of the filter container 400, so the centrifugal extractor 001 of the present invention improves the completeness of its extraction of the object to be extracted 003.

[0076] At the same time, by configuring the reflux cover 500 with the reflux channel 501 and configuring the impeller 600 that drives the liquid 002 in the liquid storage container 200 to reflux to the filter container 400 through the reflux channel 501, the present invention can make the liquid 002 circulate between the filter container 400 and the liquid storage container 200 to perform cyclic extraction of the to-be-extracted 003. Therefore, the present invention can realize fast and complete extraction of the to-be-extracted 003 through centrifugal extraction, and also save water consumption when extracting coffee by driving the liquid 002 to circulate.

[0077] It should be noted that, in the present invention, the object to be extracted 003 includes coffee powder and / or tea powder. For example, the object to be extracted 003 can be coffee powder or tea powder, or a mixture of coffee powder and tea powder.

[0078] Of course, those skilled in the art can also make the extract 003 include any other feasible powdered substances, such as soybean powder, mung bean powder, cocoa powder, lemon, etc., as needed.

[0079] The centrifugal extractor 001 of the present invention generates liquid 002 in which the target substance is dissolved during the process of extracting the object to be extracted 003.

[0080] The target substance may be a substance dissolved in water in the object to be extracted 003. The liquid 002 may be a liquid substance of the object to be extracted 003 itself, which may be water, or water in which the target substance is dissolved. The water may be hot water, room temperature water, or cold water in terms of temperature, and may be pure water, tap water, mineral water, or water in which a specific substance (such as sugar, milk, flavor, etc.) is dissolved in terms of composition.

[0081] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments of the present invention, a knob 110 may be further provided on the body 100 , so as to adjust the rotation speed of the filter container 400 through the knob 110 .

[0082] In addition, in other embodiments of the present invention, those skilled in the art may also omit the setting of the knob 110 as needed, and control the rotation speed of the filter container 400 through other buttons or other devices. Among them, the other buttons may be physical buttons set on the centrifugal extractor 001 or virtual buttons displayed on the display screen of the centrifugal extractor 001. The other devices may be remote controllers compatible with the centrifugal extractor 001, or mobile phones, tablets, and other devices connected to the centrifugal extractor 001 for communication.

[0083] like Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the liquid storage container 200 is placed in the top cavity 101 of the body 100 and can be detachably connected to the body 100, so that the user can take down the liquid storage container 200 for cleaning. Of course, those skilled in the art can also make the liquid storage container 200 fixedly connected to the body 100 as needed.

[0084] When the liquid storage container 200 is detachably connected to the body 100, the liquid storage container 200 and the body 100 are provided with a rotation-stopping structure to prevent the liquid storage container 200 from rotating relative to the body 100. For example, Figure 1 and Figure 4 As shown, a protruding structure (not marked in the figure) is provided on the peripheral wall of the liquid storage container 200, and a slot (not marked in the figure) matching the protruding structure is provided on the body 100. The protruding structure is inserted into the slot, so as to realize the circumferential θ (as shown in FIG. Figure 6 A lug (not marked in the figure) may also be provided on the side of the liquid storage container 200 away from the protruding structure, and a slot (not marked in the figure) corresponding to the lug is provided on the body 100, and the lug is embedded in the slot to further achieve circumferential θ fixation of the liquid storage container 200 and the body 100.

[0085] When the liquid storage container 200 is fixedly connected to the body 100, the two may be fixedly connected together by means of fixing components, structures or materials such as screws, buckles, and adhesives.

[0086] like Figures 1 to 4 As shown, in some embodiments of the present invention, a snap-fit ​​structure 510 is provided on one of the liquid storage container 200 and the reflux cover 500, and a snap-fit ​​structure 201 is provided on the other of the liquid storage container 200 and the reflux cover 500, so that the reflux cover 500 can be snap-fitted to the liquid storage container 200 via the snap-fit ​​structure 510 and the snap-fit ​​structure 201.

[0087] For example, Figures 1 to 4 As shown, the snap-fit ​​structure 510 is a tapered slot provided on the liquid storage container 200, and the snap-fitting structure 201 is a tapered protrusion provided on the backflow cover 500. The tapered protrusion can be inserted into the tapered slot to fix the backflow cover 500 and the filter container 400 together in the radial direction r and the circumferential direction θ.

[0088] It can be understood by those skilled in the art that the structure in which the liquid storage container 200 and the reflux cover 500 are connected by the snap-fit ​​structure 510 and the snap-fitting structure 201 not only ensures the stability of the reflux cover 500 when the centrifugal extractor 001 is working, but also facilitates the user to install and disassemble the reflux cover 500.

[0089] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in some embodiments of the present invention, the bottom wall of the liquid storage container 200 is provided with an avoidance hole 202 to avoid the driving device 300, thereby ensuring the driving connection between the driving device 300 and the impeller 600. The liquid storage container 200 is also provided with an annular baffle 210 extending from the bottom wall to the top side thereof to prevent the liquid 002 in the liquid storage container 200 from flowing out of the avoidance hole 202.

[0090] like Figure 1 , Figure 2 , Figures 4 to 6As shown, in some embodiments of the present invention, a liquid discharge channel 203 is provided on the liquid storage container 200 to discharge the liquid 002 in the liquid storage container 200 through the liquid discharge channel 203. The liquid storage container 200 is also provided with a detachable plug 220 to open and block the liquid discharge channel 203 through the plug 220.

[0091] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in some embodiments of the present invention, the driving device 300 includes a motor 310 arranged on the outside of the liquid storage container 200 and a driving disk 320 arranged on the inside of the liquid storage container 200, the motor 310 is fixedly connected to the body 100 through its casing, the motor 310 is fixedly connected to the driving disk 320 through its rotating shaft, and the driving disk 320 is fixedly connected to the impeller 600, so that the motor 310 drives the impeller 600 to rotate through the driving disk 320.

[0092] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in some embodiments of the present invention, the impeller 600 includes a hub 610 disposed at the bottom side of the filter container 400 and a plurality of spiral blades 620 disposed radially outside the hub 610. The hub 610 is circumferentially fixedly connected to the drive disk 320 and the filter container 400, respectively, and the blades 620 are located on the outside of the filter container 400 in the radial direction r.

[0093] Furthermore, the hub 610 is plugged into the driving disk 320 , and the hub 610 is fixedly connected to the filter container 400 to facilitate installation and removal of the impeller 600 and the filter container 400 , thereby facilitating the user to clean the impeller 600 and the filter container 400 .

[0094] The fixed connection between the hub 610 and the filter container 400 may be any feasible connection method such as screw connection, riveting, welding, bonding, clamping, welding, etc.

[0095] In addition, those skilled in the art may also configure the hub 610 and the filter container 400 as an integral component as required.

[0096] like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, in some embodiments of the present invention, the hub 610 is provided with a plurality of plug posts 611 extending downward, and the drive disk 320 is provided with a plurality of plug holes 321 opening upward. The plug posts 611 are pluggably inserted into the plug holes 321 to plug the hub 610 and the drive disk 320 together. This connection method facilitates the disassembly of the impeller 600 and the filter container 400, and makes it more convenient for users to clean the impeller 600 and the filter container 400.

[0097] like Figure 2 , Figure 4 and Figure 6 As shown, in some embodiments of the present invention, the hub 610 is provided with an annular groove 601 opening downward, and the annular baffle 210 in the filter container 400 is embedded in the annular groove 601 to prevent the liquid 002 in the filter container 400 from leaking out from the avoidance hole 202.

[0098] like Figure 6 and Figure 7 As shown, in some embodiments of the present invention, the top end of the blade 620 is gap-fitted or in sliding contact with the bottom end of the return channel 501 to reduce the gap between the blade 620 and the return cover 500, thereby reducing the leakage of the liquid 002 between the impeller 600 and the return cover 500, thereby improving the circulation efficiency of the centrifugal extractor 001 for the liquid 002.

[0099] like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, in some embodiments of the present invention, the filter container 400 includes a bottom large diameter section (not marked in the figure) and a top small diameter section (not marked in the figure), and a plurality of filter holes (not marked in the figure) are evenly distributed on the peripheral wall of the bottom large diameter section, so that the extracted solution can be thrown out of the filter container 400 through the plurality of filter holes. The top small diameter section is used to prevent the to-be-extracted 003 in the bottom large diameter section from being thrown out of the bottom large diameter section.

[0100] like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, in some embodiments of the present invention, the funnel cover 700 includes a top large diameter section (not marked in the figure) and a bottom small diameter section (not marked in the figure). The top large diameter section matches the top small diameter section of the filter container 400, and is used to prevent the extract 003 in the bottom large diameter section from being thrown out of the bottom large diameter section. A plurality of water-permeable holes (not marked in the figure) are evenly distributed on the peripheral wall of the bottom small diameter section, so that the liquid 002 in the filter container 400 flows out from the water-permeable holes or is thrown out to the bottom large diameter section of the filter container 400.

[0101] like Figures 1 to 3 As shown, in some embodiments of the present invention, the liquid inlet 5011 of the reflux channel 501 is an annular opening formed at the bottom end of the reflux cover 500, so that the liquid 002 driven by the impeller 600 can enter the reflux channel 501 without dead angles at 360 degrees. Compared with the liquid inlet 5011 in the form of a non-annular opening, the obstruction of the reflux cover 500 to the liquid 002 driven by the impeller 600 is reduced.

[0102] Furthermore, those skilled in the art may, as needed, sequentially reduce the height of the reflux channel 501 from the liquid outlet 5012 to the liquid inlet 5011 so that the liquid 002 in the reflux channel 501 can flow back into the liquid storage container 200 under the action of its own gravity.

[0103] like Figure 3 As shown, in some embodiments of the present invention, the return cover 500 includes an inner cover 521 and an outer cover 522 that are fixed together or made in one piece, and the inner cover 521 and the outer cover 522 are spaced apart so that the return channel 501 is formed between the inner cover 521 and the outer cover 522. It can be understood by those skilled in the art that this form of the return cover 500 has a relatively simple structure, is easy to process and manufacture, and has a low cost.

[0104] Continue reading Figure 3 In some embodiments of the present invention, the return cover 500 further includes a connecting rib 523 disposed between the inner cover 521 and the outer cover 522 , so that the inner cover 521 and the outer cover 522 are fixedly connected via the connecting rib 523 .

[0105] Exemplarily, the inner cover 521 and the outer cover 522 are respectively provided with snap-fit ​​holes (not shown in the figure), and the two ends of the connecting rib 523 are respectively adapted to the snap-fit ​​holes, so that the connecting rib 523 is respectively inserted into the snap-fit ​​holes on the inner cover 521 and the outer cover 522, and the inner cover 521 and the outer cover 522 are fixed together. Alternatively, those skilled in the art can also respectively provide snap-fit ​​holes on only one of the inner cover 521 and the outer cover 522 as needed, and make the other one fixedly connected to the connecting rib 523 or integrally formed.

[0106] In addition, those skilled in the art may also integrally manufacture the inner cover 521, the outer cover 522 and the connecting ribs 523 through casting, die-casting or injection molding as needed.

[0107] from Figures 1 to 3As can be seen in the figure, the tops of the inner cover 521 and the outer cover 522 are both provided with through holes 5201, so that the liquid outlet 5012 of the reflux channel 501 is defined as a ring-shaped opening formed between the two through holes 5201, so that the reflux cover 500 is more beautiful as a whole. In addition, the provision of the through holes 5201 also allows the user to add water into the filter container 400 through the through holes 5201, which is convenient for the user to add water.

[0108] Furthermore, those skilled in the art may, as required, make the aperture of the through hole 5201 on the inner cover 521 smaller than the aperture of the through hole 5201 on the outer cover 522 , so that the outer cover 522 covers the liquid outlet 5012 .

[0109] In addition, those skilled in the art may also configure a plug cover for the through hole 5201 on the outer cover 522 as needed to open and block the through hole 5201 on the outer cover 522 .

[0110] like Figure 5 and Figure 6 As shown, in the assembled state, the impeller 600 is gap-matched with the liquid storage container 200 , and the filter container 400 and the funnel cover 700 are gap-matched with the reflux cover 500 , respectively.

[0111] Refer to the following Figure 1 , Figure 2 , Figure 4 , Figures 5 to 7 The working principle and use method of the centrifugal extractor 001 in some embodiments of the present invention are briefly described.

[0112] First, the impeller 600 and the filter container 400 are installed in the liquid storage container 200 , and the plug 611 on the impeller 600 is inserted into the plug hole 321 on the driving disk 320 .

[0113] Then, the object to be extracted 003 is added into the filter container 400 . Then, the motor 310 is started for a period of time (eg, 5S, 10S, 30S, etc.) to make the object to be extracted 003 close to the peripheral wall of the filter container 400 .

[0114] Then, the funnel cover 700 is inserted into the filtration container 400 , and sufficient water is added to the funnel cover 700 .

[0115] Finally, the reflux cover 500 is installed on the filter container 400, and the centrifugal extractor 001 is started to rotate the motor 310 again to extract the extract 003.

[0116] like Figure 7 As shown, during the extraction of the extract 003, the filter container 400 and the impeller 600 rotate synchronously under the drive of the motor 310. The liquid 002 (such as Figure 7The liquid 002 in the liquid storage container 200 is forced to rise by the rotating impeller 600, and then flows back to the funnel cover 700 through the reflux channel 501, thus entering the next cycle.

[0117] When the extraction is finished, the motor 310 stops rotating, the user opens the stopper 220 , and the liquid 002 in the liquid storage container 200 is discharged through the discharge channel 203 .

[0118] When cleaning is required, the user may remove the reflux cover 500 , the funnel cover 700 , the filter container 400 , and the impeller 600 in sequence, and clean the removed parts, as well as clean the liquid storage container 200 .

[0119] Alternatively, only the object to be extracted 003 may be taken out, and then the motor 310 may be alternately rotated forward and reversely. When the motor 310 rotates forward, the impeller 600 drives the water to circulate as described above. When the motor 310 rotates reversely, the impeller 600 drives the water to move downward along the circumferential direction z, and under the action of the bottom wall of the liquid storage container 200, the water flows from the gap between the impeller 600 and the liquid storage container 200 to the upper side of the impeller 600, thereby cleaning the liquid storage container 200, the reflux cover 500, the funnel cover 700, the filter container 400 and the impeller 600.

[0120] In the present invention, whether the centrifugal extractor 001 has completed the extraction of the extract 003 can be determined by counting the running time of the motor 310, or by determining whether the solubility of the liquid 002 in the liquid storage container 200 has reached the value set by the user.

[0121] It should be noted that the above-mentioned method of use is only used to help those skilled in the art understand the centrifugal extractor 001 of the present invention, and does not mean that the centrifugal extractor 001 of the present invention can only have the above-mentioned method of use.

[0122] Based on the foregoing description, those skilled in the art will appreciate that the centrifugal extractor 001 in some embodiments of the present invention not only has a higher extraction rate, but also has a cyclic extraction function and is easy to clean.

[0123] like Figure 8 As shown, in some further embodiments shown therein, compared with any of the embodiments described above, the liquid inlet 5011 of the reflux channel 501 is located at a radial cross section (such as Figure 8The cross section shown in FIG. 5 is configured as a tapered structure that gradually decreases from bottom to top, so as to increase the size of the liquid inlet 5011 and gather the liquid 002, thereby avoiding the situation where too much liquid 002 driven by the impeller 600 cannot enter the liquid inlet 5011.

[0124] Continue reading Figure 8 In some other embodiments shown therein, the outer end of the liquid inlet 5011 on the radial cross section of the reflux cover 500 extends to the outer peripheral surface of the reflux cover 500, and the inner end of the liquid inlet 5011 on the radial cross section of the reflux cover 500 extends to the inner peripheral surface of the reflux cover 500, so as to improve the liquid intake capacity of the liquid inlet 5011.

[0125] like Fig. 9 As shown, in some other embodiments shown therein, compared with any of the embodiments described above, the top of the blade 620 is provided with a groove 621 recessed toward the back thereof, and the groove 621 is used to guide the liquid 002 driven by the blade 620 to the liquid inlet 5011 of the reflux channel 501. It can be understood by those skilled in the art that the groove 621 enables the liquid 002 driven by the blade 620 to accumulate at the groove 621 and enter the reflux channel 501 when moving to the top of the blade 620, thereby reducing the leakage of the liquid 002 at the top of the blade 620.

[0126] Continue reading Fig. 9 In the radial direction r of the impeller 600 , the depth of the groove 621 gradually increases toward the direction close to the liquid inlet 5011 . In the axial direction z of the impeller 600 , the depth of the groove 621 gradually increases toward the direction close to the return cup 500 .

[0127] like Fig.10 As shown, in some other embodiments shown therein, compared with any of the embodiments described above, the blade 620 is provided with a rib 622 protruding toward the front of the blade 620 at the outer end in the radial direction of the impeller 600, so as to prevent the liquid 002 driven by the blade 620 from separating from the blade 620 under the action of centrifugal force. It can be understood by those skilled in the art that the rib 622 can effectively prevent the liquid 002 driven by the blade 620 from separating from the blade 620 under the action of centrifugal force, thereby reducing the leakage of the liquid 002.

[0128] Continue reading Fig.10 The width of the rib 622 in the radial direction r gradually increases from the bottom end to the top end of the blade 620, so as to drive the liquid 002 toward the liquid inlet 5011 during the rotation of the impeller 600.

[0129] So far, the technical solution of the present invention has been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to understand that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can split and combine the technical solutions in the above embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present invention will fall within the protection scope of the present invention.

[0130] Finally, it should be noted that in the present invention, the term "communication" means fluid communication, so as to allow fluid (such as air, liquid 002) to flow between two connected objects. And the "communication" can be to allow the fluid to flow between the two connected objects without leakage, or to allow the fluid to flow between the two connected objects with a little leakage.

Claims

1. A centrifugal extractor, comprising: liquid storage container; A driving device, fixed relatively to the liquid storage container; A filtering container, disposed in the liquid storage container and drivingly connected to the driving device; A reflux cover is fixedly arranged in the liquid storage container relative to the liquid storage container, the reflux cover is buckled on the outside of the filter container, and the reflux cover defines a reflux channel extending from its bottom end to the top side of the filter container; An impeller is arranged in the liquid storage container and is drivingly connected to the driving device. At least a portion of the impeller is radially located outside the filter container, and the impeller is located on the bottom side of the reflux cover to drive the liquid in the liquid storage container to flow back to the filter container through the reflux channel.

2. The centrifugal extractor according to claim 1, wherein: The liquid inlet of the reflux channel is an annular opening formed at the bottom end of the reflux cover.

3. The centrifugal extractor according to claim 2, wherein: The liquid inlet is arranged in a radial cross section of the reflux cup as a tapered structure that gradually becomes smaller from bottom to top.

4. The centrifugal extractor according to claim 3, wherein: The outer end of the liquid inlet on the radial cross section of the return cup extends to the outer peripheral surface of the return cup, and the inner end of the liquid inlet on the radial cross section of the return cup extends to the inner peripheral surface of the return cup.

5. The centrifugal extractor according to claim 2, wherein: The return cover includes an inner cover and an outer cover which are fixed together or formed in one piece, and the inner cover is spaced apart from the outer cover so that the return channel is formed between the inner cover and the outer cover.

6. The centrifugal extractor according to claim 5, wherein: The tops of the inner cover and the outer cover are both provided with through holes, so that the liquid outlet of the reflux channel is defined as an annular opening formed between the two through holes.

7. The centrifugal extractor according to claim 6, wherein: The height of the reflux channel decreases from the liquid outlet to the liquid inlet, so that the liquid in the reflux channel can flow back into the liquid storage container under the action of its own gravity; and / or, The aperture of the through hole on the inner cover is smaller than the aperture of the through hole on the outer cover, so that the outer cover covers the liquid outlet.

8. The centrifugal extractor according to claim 5, wherein: The return cover further includes a connecting rib arranged between the inner cover and the outer cover, so that the inner cover and the outer cover are fixedly connected through the connecting rib.

9. The centrifugal extractor according to any one of claims 2 to 8, wherein: The impeller includes a hub disposed on the bottom side of the filter container and a plurality of spiral blades disposed radially outside the hub. The blades are located radially outside the filter container.

10. The centrifugal extractor according to claim 9, wherein: The top end of the blade is in clearance fit or sliding contact with the bottom end of the return channel.

11. The centrifugal extractor according to claim 10, wherein: The top end of the blade is provided with a groove which is sunken toward the back side thereof, and the groove is used to guide the liquid driven by the blade to the liquid inlet of the reflux channel.

12. The centrifugal extractor according to claim 11, wherein: In the radial direction of the impeller, the depth of the groove gradually increases toward the direction close to the liquid inlet; In the axial direction of the impeller, the depth of the groove gradually increases toward the direction approaching the return cup.

13. The centrifugal extractor according to claim 10, wherein: The blade is provided with a rib protruding toward the front of the blade at the outer end in the radial direction of the impeller, so as to prevent the liquid driven by the blade from separating from the blade under the action of centrifugal force.

14. The centrifugal extractor according to any one of claims 1 to 8, wherein: A snap-fit ​​structure is provided on one of the liquid storage container and the return cover, and a snap-fitting structure is provided on the other of the liquid storage container and the return cover, so that the return cover can be snap-fitted to the liquid storage container through the snap-fitting structure and the snap-fitting structure.

15. The centrifugal extractor according to claim 14, wherein: The snap-fit ​​structure is a conical slot provided on the liquid storage container, and the snap-fit ​​matching structure is a conical protrusion provided on the reflux cover; The conical protrusion is removably inserted through the conical slot to fix the backflow cup and the filter container together in radial and circumferential directions.

16. The centrifugal extractor according to claim 9, wherein: The driving device includes a motor arranged outside the liquid storage container and a driving disk arranged inside the liquid storage container; The wheel hub is plugged into the driving disk, and the wheel hub is fixedly connected to the filter container to facilitate installation and removal of the impeller and the filter container.

17. The centrifugal extractor according to claim 16, wherein: The wheel hub is provided with a plurality of plug posts extending downward, and the driving disc is provided with a plurality of plug holes opening upward. The plug post can be plugged into the plug hole to plug the wheel hub and the driving plate together.

18. The centrifugal extractor according to any one of claims 1 to 8, wherein: The centrifugal extractor further comprises a body, and the liquid storage container and the driving device are both mounted on the body; and / or, The centrifugal extraction machine is suitable for extracting coffee.

Images