Residue prevention device, beverage preparation method and electrical equipment

Abstract

The invention belongs to the technical field of life electric appliances, and particularly relates to an anti-residue device, a beverage preparation method and electrical equipment. A brewing chamber is arranged in a brewing bin of the residue prevention device, a brewing opening is formed in the brewing chamber, a brewing part movably passes through the brewing opening and moves back and forth relative to the brewing bin, a flow guide part is communicated with the brewing chamber through an opened first flow guide channel, and a first switching part is arranged in the first flow guide channel to open and close the first flow guide channel. The first switching piece is provided with a flow guide part, and the flow guide part communicates with the flow guide piece and the brewing chamber. According to the brewing device, the fluid retained in the first flow guide channel and the flow guide part can be discharged out of the brewing bin, so that the problem that the quality of the retained fluid is reduced due to long-time retention is avoided, and the user experience is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of household electrical appliances, and specifically relates to an anti-residue device, a beverage preparation method and electrical equipment. Background Art

[0002] After preparing a drink, the existing beverage preparation equipment will retain a certain amount of fluid in the guide between the brewing chamber and the beverage outlet. The retained fluid cannot be discharged from the beverage outlet or returned to the brewing chamber by the equipment. When the interval between the next brewing cycle is too long, the retained fluid will be retained for a long time, resulting in a decrease in fluid quality, affecting the user experience. Summary of the invention

[0003] In order to solve the above technical problems, the present application provides an anti-residue device, a beverage preparation method and an electrical device to avoid the technical problem that the fluid quality deteriorates due to the long-term retention of the fluid in the guide member between the brewing chamber and the beverage outlet, thereby affecting the user experience.

[0004] The technical solution of this application is:

[0005] In a first aspect, the present application provides an anti-residue device, which includes: a brewing bin, provided with a brewing chamber, and the brewing chamber is provided with a brewing port; a brewing piece, which moves through the brewing port, the brewing piece moves back and forth relative to the brewing bin, and the brewing piece is provided with an openable and closable first flow guide channel; a flow guide piece, which is connected to the brewing chamber through the opened first flow guide channel; a first switching piece, which is arranged in the first flow guide channel to open and close the first flow guide channel, the first switching piece is provided with a flow guide part, and the flow guide part connects the flow guide piece and the brewing chamber; under the condition that the brewing piece and the brewing bin move closer to each other, the first flow guide channel is opened, and the fluid in the brewing bin is led out to the flow guide piece through the first flow guide channel; under the condition that the brewing piece and the brewing bin move away from each other, the residual fluid in the flow guide piece is led into the brewing bin through the flow guide part and discharged through the brewing port.

[0006] When the anti-residue device provided by the present application is actually used, after the fluid in the brewing chamber is brewed, the brewing component and the brewing chamber are controlled to move closer to each other, the first guide channel is opened, and the fluid in the brewing chamber is guided to the corresponding equipment through the first guide channel and the guide part to prepare beverages; after the beverage is prepared, the brewing component and the brewing chamber are controlled to move away from each other, and the residual fluid in the guide component is guided into the brewing chamber through the guide part and discharged through the brewing port of the brewing chamber, so that the fluid retained in the guide component can be discharged from the brewing chamber, so as to avoid the problem of fluid quality degradation due to long-term retention of the fluid, so as to improve the user experience.

[0007] In some embodiments, the first switching member includes: a first valve core, which is movably arranged in the first flow guide channel, the head of the first valve core faces the brewing chamber, the head of the first valve core blocks the first flow guide channel, the periphery of the first valve core is arranged in the first flow guide channel in a clearance-matched manner, and the projection of the periphery of the first valve core falls within the head of the first valve core; a first elastic member, the two ends of which are respectively connected to the back of the first valve core and the inner wall of the first flow guide channel. When the brewing member and the brewing chamber move closer to each other, the fluid in the brewing chamber is compressed and flows into the first flow guide channel, acting on the head of the first valve core, forcing the first elastic member to be compressed, so that the fluid can flow out through the periphery of the first valve core and the gap of the first flow guide channel to open the first flow guide channel; on the contrary, when the brewing member and the brewing chamber move away from each other, due to the negative pressure generated in the brewing chamber, the first elastic member is forced to drive the first valve core back to close the first flow guide channel.

[0008] In some embodiments, the guide part includes: a first guide groove arranged on the outer peripheral surface of the head of the first valve core, or / and, a first guide hole arranged on the first valve core, the first guide hole is arranged to pass through in parallel with the axial direction of the first valve core or along the axial direction of the first valve core, and under the condition that the head of the first valve core blocks the first guide channel, the first guide groove and / or the first guide hole connect the first guide channel and the brewing chamber to guide the residual fluid in the guide member into the brewing chamber through the first guide groove and / or the first guide hole.

[0009] In some embodiments, the first switching member further includes: a first valve seat, arranged at one end of the guide channel facing the brewing chamber, a first liquid inlet channel and a first liquid expansion channel are arranged in the first valve seat, the brewing chamber, the first liquid inlet channel and the first liquid expansion channel are connected in sequence, the cross-sectional area of ​​the first liquid expansion channel increases in sequence in the direction away from the brewing chamber, and the head of the first valve core is movably arranged in the first liquid expansion channel.

[0010] In some embodiments, the guide part includes: a second guide groove arranged on the inner wall of the first liquid expansion channel, or / and, a second guide hole arranged on the first valve seat, the axial direction of the second guide hole is parallel to the axial direction of the first valve core, and under the condition that the head of the first valve core blocks the first guide channel, the second guide groove and / or the second guide hole connect the first guide channel and the brewing chamber to guide the residual fluid in the guide member into the brewing chamber through the first guide groove and / or the first guide hole.

[0011] In some embodiments, the head of the brewing component is provided with a filter port, and a filter net is provided in the brewing port.

[0012] In some embodiments, the anti-residue device further includes: a piston member, which is movably disposed in the brewing chamber to receive the residual fluid in the first guide channel and the guide member, and guide the residual fluid to the brewing port for discharge.

[0013] In a second aspect, the present application also provides a beverage preparation method, which is based on the above-mentioned anti-residue device and includes: putting a brewing substance into the brewing chamber of the brewing bin; controlling the brewing bin and the brewing component to move closer together until the brewing component closes the brewing port of the brewing bin; injecting fluid into the brewing chamber; controlling the piston component to rise to compress and extract the fluid and brewing substance on the piston component to form a beverage, and opening the first guide channel to guide the beverage to a corresponding device through the opened first guide channel; controlling the piston component to descend to generate a negative pressure in the brewing bin to close the first guide channel, and the residual beverage falls onto the piston component through the guide channel; controlling the brewing bin and the brewing component to move away from each other until the brewing port of the brewing bin is opened; controlling the piston component to rise to the top of the brewing bin, and the fluid is discharged from the brewing port of the brewing bin and discharged from the brewing port of the brewing bin.

[0014] The beverage preparation method provided in the present application can discharge the fluid retained in the guide member out of the brewing chamber to avoid the problem of the retained fluid being degraded in quality due to long-term retention, thereby improving the user experience.

[0015] In some embodiments, controlling the brewing chamber and the brewing component to move closer to each other specifically includes: controlling the brewing chamber to move towards the brewing component, or / and controlling the brewing component to move towards the brewing chamber.

[0016] In some embodiments, controlling the brewing chamber and the brewing component to move away from each other specifically includes: controlling the brewing chamber to move in a direction away from the brewing component, or / and controlling the brewing component to move in a direction away from the brewing chamber.

[0017] In a third aspect, the present application also provides an electrical device, which includes the above-mentioned anti-residue device.

[0018] The electrical equipment with the above-mentioned anti-residue device can discharge the fluid retained in the guide member out of the brewing chamber to avoid the problem of the retained fluid being degraded due to long-term retention, thereby improving the user experience.

[0019] In some embodiments, the electrical appliance is a fully automatic coffee machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] In the attached figure:

[0022] Figure 1 A cross-sectional schematic diagram of an anti-residue device in one or more embodiments of the present application is shown;

[0023] Figure 2 Shows Figure 1 Explosion diagram of

[0024] Figure 3 Shows Figure 1 A schematic diagram of the structure of the brewing parts;

[0025] Figure 4 Shows Figure 3 Schematic diagram of top view;

[0026] Figure 5 Shows Figure 4 AA cross-sectional diagram of ;

[0027] Figure 6 Shows Figure 3 A schematic diagram of the structure of the base;

[0028] Figure 7 Shows Figure 6 A structural diagram from another perspective;

[0029] Figure 8 Shows Figure 3 A schematic diagram of the structure of the guide member;

[0030] Fig. 9 A schematic flow chart of a beverage preparation method based on the anti-residue device of the first embodiment is shown;

[0031] Fig.10 A schematic diagram of the structure of the first guide groove on the first valve core is shown;

[0032] Fig.11 A schematic diagram showing the structure of the first guide hole on the first valve core is shown;

[0033] Fig.12 Shows Fig.11 A structural diagram from another perspective;

[0034] Fig.13A schematic flow chart of a beverage preparation method based on the anti-residue device of Embodiment 1 is shown;

[0035] Fig.14 A schematic diagram showing the structure of the second guide groove on the first valve seat is shown;

[0036] Fig.15 A schematic diagram showing the structure of the second flow guide hole on the first valve seat is shown;

[0037] Fig.16 Shows Fig.15 A schematic diagram of the structure from another perspective.

[0038] Reference numerals:

[0039] Brewing chamber-100, brewing room-101, brewing mouth-102;

[0040] Brewing element 200, filter port 201, filter screen 202, base 203, first through hole 204, second through hole 205, first guide column 206, first guide section 207, second guide section 208, third guide section 209, second guide column 210, fourth guide section 211, fifth guide section 212, lap platform 213, annular groove 214, sealing element 215;

[0041] A first flow guiding channel 300, a first liquid inlet channel 301, and a first liquid expansion channel 302;

[0042] A second flow guiding channel 400, a second liquid inlet channel 401, and a second liquid expansion channel 402;

[0043] Flow guide 500, main pipe 501, first branch pipe 502, second branch pipe 503, connector 504, infusion port 505;

[0044] The first switching member 600, the first valve core 601, the first elastic member 602, the first valve seat 603, the first positioning column 604, the first guide groove 605, the first guide hole 606, the second guide groove 607, and the second guide hole 608;

[0045] A second switching member 700, a second valve core 701, a second elastic member 702, a second valve seat 703, and a second positioning column 704;

[0046] Piston parts - 800. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0049] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0050] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0051] In the related art, beverage preparation equipment, especially pressure coffee machines, usually put coffee beans, coffee powder or coffee powder bags into the brewing chamber of the coffee preparation machine, and inject fluid with a set temperature and a set pressure into the brewing chamber. After extracting a set amount of coffee beverage, the equipment stops supplying. Then the brewing chamber is opened automatically or manually, and the residue in the brewing chamber is discharged to enter the next brewing cycle.

[0052] After brewing, a certain amount of coffee liquid will be retained in the guide between the brewing chamber and the coffee beverage outlet in the beverage preparation equipment sold on the market. The retained coffee liquid cannot be discharged from the beverage outlet or returned to the brewing chamber by the equipment. When the interval between the next brewing cycle is too long, the temperature of the retained coffee liquid drops, the flavor is lost or even deteriorates. When brewing the beverage next time, the retained coffee liquid and the fresh coffee liquid are discharged into the cup together, resulting in the temperature and quality of the whole cup of coffee beverage failing to meet the requirements, resulting in a decline in the quality of the coffee liquid and affecting the user experience.

[0053] The conventional solution is to increase the waiting time for the next brewing of the beverage to wait for the coffee liquid in the guide member to evaporate, so as to minimize the impact of the retained coffee liquid on the beverage, but this will affect the preparation efficiency of the beverage; or, rinse the guide member to remove the retained coffee liquid in the guide member, but there is still rinse water in the guide member after rinsing, which will still affect the quality of the beverage, increase unnecessary operations, and reduce the preparation efficiency of the beverage.

[0054] Based on the above technical problems, the embodiments of the present application provide an anti-residue device, a beverage preparation method and an electrical device to avoid the technical problem that the fluid quality deteriorates due to the long-term retention of the fluid in the guide member between the brewing chamber and the beverage outlet, affecting the user experience.

[0055] The design idea of ​​the anti-residue device provided in the present application is: under the condition that the brewing part and the brewing chamber move close to each other, that is, under the working condition of brewing extraction, the fluid in the brewing chamber can be led out to the guide part through the brewing part; under the condition that the brewing part and the brewing chamber move away from each other, the residual fluid in the guide part can be guided into the brewing chamber and discharged through the brewing port of the brewing chamber, so as to avoid the problem of fluid quality degradation due to long-term retention of the fluid, thereby improving the user experience.

[0056] Embodiment 1:

[0057] Based on the above design ideas, an embodiment of the present application provides an anti-residue device. Figure 1 shows a cross-sectional schematic diagram of an anti-residue device in one or more embodiments of the present application, Figure 2 Shows Figure 1 Explosion diagram of the . Figure 1 as well as Figure 2The anti-residue device includes a brewing chamber 100, a brewing part 200 and a guide part 500 for conveying fluid, wherein the brewing chamber 100 is provided with a brewing chamber 101, the brewing chamber 101 is provided with a brewing port 102, the brewing part 200 moves through the brewing port 102, the brewing part 200 can move back and forth relative to the brewing chamber 100, and the brewing part 200 is provided with a first guide channel 300 and a second guide channel 400, one end of the first guide channel 300 and one end of the second guide channel 400 are both connected to the brewing chamber 101, and the other end of the first guide channel 300 and the second guide channel 400 are connected to the brewing chamber 101. The other end of the channel 400 is connected to the guide member 500. When the brewing member 200 and the brewing chamber 100 move closer to each other, the first guide channel 300 is opened and the second guide channel 400 is closed, so as to lead the fluid in the brewing chamber 100 out through the first guide channel 300; when the brewing member 200 and the brewing chamber 100 move away from each other, the first guide channel 300 is closed and the second guide channel 400 is opened, so as to lead the fluid in the first guide channel 300 into the brewing chamber 100 through the opened second guide channel 400 and discharge it through the brewing port 102.

[0058] When the anti-residue device provided in the embodiment of the present application is actually used, after the brewing of the fluid in the brewing chamber 100 is completed, the brewing part 200 and the brewing chamber 100 are controlled to move closer, the first guide channel 300 is opened, and the second guide channel 400 is closed, and the fluid in the brewing chamber 100 is guided to the corresponding equipment through the first guide channel 300 and the guide part 500 to prepare a beverage; after the fluid in the brewing chamber 100 is drawn out of a set amount, the brewing part 200 and the brewing chamber 100 are controlled to move away from each other. The first guide channel 300 is closed and the second guide channel 400 is opened, so that the fluid in the first guide channel 300 and the guide member 500 is guided into the brewing chamber 100 through the opened second guide channel 400 and discharged through the brewing port 102 of the brewing chamber 100, so that the fluid retained in the guide member 500 can be discharged from the brewing chamber 100, so as to avoid the problem of fluid quality degradation due to long-term retention of the fluid, so as to improve the user experience.

[0059] Combination Figure 1 as well as Figure 2 The brewing port 102 can be set at the top of the brewing chamber 101 of the brewing bin 100, and the brewing part 200 and the brewing bin 100 can be controlled to move away from each other by some driving mechanism through external force. When the brewing part 200 is completely separated from the brewing bin 100, the brewing port 102 is opened, and then the brewing material required for preparing the beverage can be injected into the brewing chamber 101 of the brewing bin 100 through the opened brewing port 102. After the brewing material is injected, the brewing part 200 and the brewing bin 100 are driven to move closer to each other, and the brewing port 102 can be closed to prepare the fluid brewing.

[0060] Figure 3 Shows Figure 1 The schematic diagram of the brewing parts in Figure 4 Shows Figure 3 A top view of Figure 5 Shows Figure 3 AA cross-sectional diagram of Figure 6 Shows Figure 3 The schematic diagram of the base structure in FIG. Figure 7 Shows Figure 6 Another structural diagram of the perspective. Figure 1-Figure 7 The overall shape of the brewing component 200 is columnar and matches the brewing chamber 101. A seal 215 is provided between the circumference of the brewing component 200 and the side wall of the brewing chamber 101 to ensure a sealing effect between the brewing component 200 and the brewing chamber 101 when the brewing component 200 is in the brewing chamber 101, so as to prevent the fluid from overflowing from between the brewing component 200 and the brewing chamber 101.

[0061] Combination Figure 1-Figure 6 Since the brewing component 200 moves back and forth, an annular groove 214 may be provided on the circumferential surface of the brewing component 200 in the embodiment of the present application, and a seal 215 is provided in the annular groove 214. The seal 215 has a sealing portion protruding from the annular groove 214. When the brewing component 200 moves back and forth relative to the brewing chamber 100, the sealing portion of the seal 215 will be compressed, thereby ensuring the sealing between the brewing component 200 and the brewing chamber 101.

[0062] Combination Figure 1-Figure 6 The head of the brewing part 200 is provided with a filter port 201, through which the fluid can enter and exit. A filter net 202 can be provided in the filter port 201 to improve the extraction quality of the fluid.

[0063] Combination Figure 6 The head of the brewing part 200 may be provided with a base 203, and the end surface of the base 203 facing the brewing chamber 100 is provided with the filter port 201, and the filter screen 202 is installed on the base 203. The base 203 may be provided with a first through hole 204 communicating with the first flow guide channel 300 and a second through hole 205 communicating with the first flow guide channel 300 to realize the conveying and circulation of the fluid.

[0064] Combination Figure 1-Figure 7 A lap platform 213 may be provided on the outer peripheral surface of the base 203. When the brewing component 200 moves into the brewing chamber 100, the lap platform 213 will lean against the top of the brewing chamber 100 to limit the moving position of the brewing component 200 and improve the safety of the device during operation.

[0065] Combination Figure 1 , Figure 2 as well as Figure 5A first switching member 600 is arranged in the first guide channel 300 to control the opening and closing of the first channel. The first switching member 600 includes a first valve core 601 and a first elastic member 602. The first valve core 601 is movably arranged in the first guide channel 300. The head of the first valve core 601 faces the brewing chamber 100. The head of the first valve core 601 blocks the first guide channel 300. The first valve core 601 is arranged in the first guide channel 300 with a clearance fit. The projection of the head of the first valve core 601 falls on the body of the first valve core 601. The two ends of the first elastic member 602 are respectively connected to the back of the first valve core 601 and the inner wall of the first guide channel 300. When the brewing component 200 and the brewing chamber 100 move closer to each other, the fluid in the brewing chamber 100 is compressed and flows into the first guide channel 300, acting on the head of the first valve core 601, forcing the first elastic member 602 to be compressed, so that the fluid can flow out through the gap between the body of the first valve core 601 and the first guide channel 300 to open the first guide channel 300; conversely, when the brewing component 200 and the brewing chamber 100 move away from each other, due to the negative pressure generated in the brewing chamber 100, the first elastic member 602 is forced to drive the first valve core 601 to return to its position to close the first guide channel 300.

[0066] Combination Figure 1 , Figure 2 as well as Figure 5 The first guide channel 300 includes a first liquid inlet channel 301 and a first liquid expansion channel 302 arranged along the moving direction of the brewing component 200, the brewing chamber 101, the first liquid inlet channel 301 and the first liquid expansion channel 302 are connected in sequence, and the cross-sectional area of ​​the first liquid expansion channel 302 increases in sequence in the direction away from the brewing chamber 101, and the head of the first valve core 601 is movably arranged in the first liquid expansion channel 302. In the initial state, under the support of the first elastic member 602, the head of the first valve core 601 is arranged in the first liquid expansion channel 302 to close the first guide channel 300; when the brewing member 200 and the brewing chamber 100 move close to each other, the fluid in the brewing chamber 100 is compressed and flows into the first liquid inlet channel 301 of the first valve seat 603 through the first through hole 204, and forces the head of the first valve core 601 in the first liquid expansion channel 302 to move away from the brewing chamber 100. Since the cross-sectional area of ​​the first liquid expansion channel 302 increases successively in the direction away from the brewing chamber 101, the fluid can flow into between the head of the first valve core 601 and the first liquid expansion channel 302, and then flow out through the gap between the body of the first valve core 601 and the first guide channel 300.

[0067] Combination Figure 1 , Figure 2 as well as Figure 5The first switching member 600 also includes a first valve seat 603. The first liquid inlet channel 301 and the first liquid expansion channel 302 are arranged on the first valve seat 603 along the moving direction of the brewing member 200. The brewing chamber 101 can be connected to the first liquid inlet channel 301 and the first liquid expansion channel 302 in sequence through the first through hole 204 to realize fluid transportation.

[0068] Specifically, combined Figure 1 , Figure 2 , Figure 5 as well as Figure 7 A first guide column 206 may be provided on the top of the base 203, and the first guide column 206 may be axially penetrated to form a first guide channel 300. A section of the first guide channel 300 close to the brewing chamber 100 may be set as a first guide section 207, a section of the first guide channel 300 located in the middle may be set as a second guide section 208, and a section away from the brewing chamber 100 may be set as a third guide section 209. The first guide section 207, the second guide section 208 and the third guide section 209 are coaxially connected in sequence, and the diameters of the first guide section 207, the second guide section 208 and the third guide section 209 decrease in sequence. The first valve seat 603 is fixedly provided at the bottom of the first guide section 207, and there is a distance between the first valve seat 603 and the top of the first guide section 207. The head of the first valve core 601 may be arc-shaped, and the first valve seat 603 may be a valve seat 603. The body of a valve core 601 is loosely matched with the first guide section 207, and a first positioning column 604 may be provided on the back of the first valve core 601. The first positioning column 604 may move through the first guide section 207 and enter the second guide section 208. The first elastic member 602 may be a spring, and its two ends are respectively connected to or against the back of the first valve core 601 and the top of the second guide section 208, and the first elastic member 602 is sleeved on the first positioning column 604 to provide guidance for the compression and reset of the first elastic member 602. The fluid in the brewing chamber 100 may flow out through the first guide section 207, the second guide section 208 and the third guide section 209 in sequence.

[0069] In other embodiments, the head of the first valve core 601 may also be conical or truncated, which is not limited here. In addition, the outer diameter of the third guide section 209 may be smaller than the outer diameter of the second guide section 208, which can facilitate the assembly of the first elastic member 602 and the guide member 500. For the assembly of the guide member 500, please refer to the following description.

[0070] Combination Figure 1 , Figure 2 as well as Figure 5A second switching member 700 is arranged in the second guide channel 400 to control the opening and closing of the second channel. The second switching member 700 includes a second valve core 701 and a second elastic member 702. The second valve core 701 is movably arranged in the second guide channel 400. The head of the second valve core 701 faces away from the brewing chamber 100. The head of the second valve core 701 blocks the second guide channel 400. The second valve core 701 is arranged in the second guide channel 400 with a clearance fit around the body. The projection of the head of the second valve core 701 falls on the body of the second valve core 701; the two ends of the second elastic member 702 are respectively connected to the back of the second valve core 701 and the inner wall of the second guide channel 400. When the brewing component 200 and the brewing chamber 100 move away from each other, the fluid in the brewing chamber 100 is compressed and flows into the second guide channel 400, acting on the back of the second valve core 701. The head of the second valve core 701 blocks the second guide channel 400, so that the fluid can only flow out through the first guide channel 300. At the same time, the second elastic member 702 is forced to be stretched to close the second guide channel 400; on the contrary, when the brewing component 200 and the brewing chamber 100 move closer to each other, due to the negative pressure generated in the brewing chamber 100, the second elastic member 702 is forced to return to its position, and the second elastic member 702 drives the second valve core 701 to move to open the second guide channel 400, so as to guide the fluid in the guide component 500 into the brewing chamber 100 through the opened second guide channel 400, and discharge it through the brewing port 102 of the brewing chamber 100.

[0071] Combination Figure 1 , Figure 2 as well as Figure 5The second flow guide 500 includes a second liquid inlet channel 401 and a second liquid expansion channel 402 sequentially arranged along the moving direction of the brewing element 200. The second liquid inlet channel 401 and the second liquid expansion channel 402 are sequentially connected to the brewing chamber 101 through the second through hole 205. The cross-sectional area of ​​the second liquid expansion channel 402 increases sequentially in the direction approaching the brewing chamber 101. The head of the second valve core 701 is movably arranged in the second liquid expansion channel 402. When the brewing element 200 and the brewing chamber 100 move close to each other, the fluid in the brewing chamber 100 is compressed and flows into the second flow guide channel 400, acting on the back of the second valve core 701. The head of the second valve core 701 is located in the first liquid expansion channel 302 to block the second flow guide channel 400, so that the fluid can only flow out through the first flow guide channel 300. At the same time, the second elastic member 702 is forced to be stretched to close the second flow guide channel 400. On the contrary, when the brewing element 200 and the brewing chamber 100 move close to each other, the fluid in the brewing chamber 100 is compressed and flows into the second flow guide channel 400, acting on the back of the second valve core 701. The head of the second valve core 701 is located in the first liquid expansion channel 302 to block the second flow guide channel 400, so that the fluid can only flow out through the first flow guide channel 300. At the same time, the second elastic member 702 is forced to be stretched to close the second flow guide channel 400. 0 and the brewing chamber 100 move away from each other, due to the negative pressure generated in the brewing chamber 100, the second elastic member 702 is forced to return to its position, and the second elastic member 702 drives the second valve core 701 in the second liquid expansion channel 402 to move toward the brewing chamber 100 to open the second guide channel 400, so as to guide the fluid in the guide member 500 into the brewing chamber 100 through the opened second guide channel 400, and discharge it through the brewing port 102 of the brewing chamber 100.

[0072] Specifically, combined Figure 1 , Figure 2 , Figure 5 as well as Figure 7A second guide column 210 may be provided on the top of the base 203 , and the second guide column 210 may penetrate along the axial direction to form a second guide channel 400 . A section of the second guide channel 400 close to the brewing chamber 100 can be set as the fourth guide section 211, and a section of the second guide channel 400 away from the brewing chamber 100 can be set as the fifth guide section 212. The fourth guide section 211 and the fifth guide section 212 are coaxially connected in sequence, and the diameters of the fourth guide section 211 and the fifth guide section 212 are reduced in sequence. A second valve seat 703 can be provided at the bottom of the fourth guide section 211, and there is a distance between the second valve seat 703 and the top of the fourth guide section 211. The second valve seat 703 is provided with a third through hole. The brewing chamber 101 is connected to the fourth guide section 211 through the second through hole 205 and the third through hole. The third through hole is a stepped hole. The bottom end of the second elastic member 702 is connected to the stepped hole, and the top end of the second elastic member 702 is connected to the first through hole. The back of the second valve core 701, the fifth guide section 212 can be the above-mentioned second liquid inlet channel 401, the second liquid expansion channel 402 is arranged at the transition between the fifth guide section 212 and the fourth guide section 211, the head of the second valve core 701 can be arc-shaped, the circumference of the second valve core 701 and the fourth guide section 211 are clearance-matched, and a second positioning column 704 can be arranged on the back of the second valve core 701, and the second positioning column 704 is movably arranged in the fourth guide section 211, the second elastic member 702 can be a spring, and the second elastic member 702 is sleeved on the second positioning column 704 to provide guidance for the compression and reset of the second elastic member 702, and the fluid in the guide member 500 can flow into the brewing chamber 100 through the fifth and fourth guide sections 211, the third through hole and the second through hole 205 in sequence.

[0073] In other embodiments, the head of the first valve core 601 may also be conical or truncated, which is not limited here. In addition, the outer diameter of the fifth guide section 212 may be smaller than the outer diameter of the fourth guide section 211, which can facilitate the assembly of the guide member 500. For the assembly of the guide member 500, please refer to the following description.

[0074] As can be seen from the above, the first switching member 600 and the second switching member 700 are both pressure control valves, i.e., valves controlled by pressure. In other embodiments, the second switching member and the second switching member may also be other types of valves, for example, the periphery of the switching member has a certain elasticity, and under the action of pressure, the elasticity of the switching member is completely deformed, thereby opening the channel.

[0075] Combination Figure 1 , Figure 2 as well as Figure 5 The anti-residue device also includes a flow guide 500. Figure 8 Shows Figure 3 The schematic diagram of the structure of the guide piece in FIG. Figure 1 , Figure 2 , Figure 5 as well as Figure 8 The flow guide member 500 includes a main pipeline 501, a first branch pipe 502 and a second branch pipe 503. The main pipeline 501 is provided with an infusion port 505. The first branch pipe 502 and the second branch pipe 503 are connected in parallel to the main pipeline 501. The first branch pipe 502 is connected to the first flow guide channel 300, and the second support and the second flow guide channel 400 are connected. In actual implementation, after the brewing of the fluid in the brewing chamber 100 is completed, the brewing member 200 is controlled to move toward the brewing chamber 100, the first flow guide channel 300 is controlled to be opened, and the second flow guide channel 400 is controlled to be closed. The fluid in the brewing chamber 100 is drained into the main pipeline 501 through the first flow guide channel 300 and the first branch pipe 502, and is drained to the corresponding equipment through the infusion port 505 of the main pipeline 501 to prepare beverages; after the fluid in the brewing chamber 100 is drained out of a set amount, the brewing member 200 is controlled to move away from the brewing chamber 100. The guide member 500 moves in the same direction, and negative pressure is formed in the brewing chamber 100. The first guide channel 300 is controlled to be closed, and the second guide channel 400 is controlled to be opened, so that the fluid in the main pipeline 501 and the first guide channel 300 is guided into the brewing chamber 100 through the second branch pipe 503 and the opened second guide channel 400, and discharged through the brewing port 102 of the brewing chamber 100, so that the fluid retained in the guide member 500 can be discharged from the brewing chamber 100, so as to avoid the problem of deterioration of fluid quality due to long-term retention of the retained fluid, so as to improve the user experience.

[0076] In the embodiment of the present application, the first branch pipe 502 and the second branch pipe 503 can be integrally formed with the main pipe 501, the first branch pipe 502 is connected to the third guide section 209 of the first guide column 206 through a joint 504, and the second branch pipe 503 is connected to the fourth guide section 211 of the second guide column 210 through another joint 504. In other embodiments, the first branch pipe 502 can be fixed to the outer circumference of the third guide section 209 of the first guide column 206 by threads, and the second branch pipe 503 can be fixed to the outer circumference of the fourth guide section 211 of the second guide column 210 by threads, and then the main pipe 501 is plugged into the first branch pipe 502 and the second branch pipe 503, which is not limited here.

[0077] In the related art, the brewing port 102 is set at the bottom of the brewing chamber 100 to discharge retained fluid residues. However, since the brewing port 102 needs to be closed when brewing fluid in the brewing chamber 100, a device for controlling the opening and closing of the brewing port 102 needs to be set to adapt to different usage conditions, which increases the cost.

[0078] Based on this, combined Figure 1 as well as Figure 2The anti-residue device of the embodiment of the present application further includes a piston member 800, which can be driven by an external force to move back and forth in the brewing chamber 101 to receive the fluid.

[0079] Fig. 9 The flowchart of the beverage preparation method based on the anti-residue device of the first embodiment is shown. Fig. 9 , the beverage preparation method comprises:

[0080] Putting brewing material into the brewing chamber 101 of the brewing chamber 100: When the brewing chamber 100 and the brewing part 200 are completely separated, the brewing port 102 at the top of the brewing chamber 100 is opened, and brewing material is put into the brewing chamber 101 of the brewing chamber 100 through the opened brewing port 102. The brewing material can be coffee beans, etc., and the brewing material falls onto the top of the piston part 800;

[0081] Control the brewing chamber and the brewing part to move closer to each other until the brewing part closes the brewing port of the brewing chamber: in actual implementation, the brewing chamber 100 can be controlled to move toward the brewing part 200, or the brewing part 200 can be controlled to move toward the brewing chamber 100, or both the brewing chamber 100 and the brewing part 200 can be controlled to move, so that the brewing chamber 100 and the brewing part 200 move closer to each other;

[0082] Injecting fluid into the brewing chamber 102: As the brewing chamber 100 and the brewing component 200 move closer to each other, the air in the brewing chamber 100 is compressed, and the first guide channel 300 is at least partially opened. Therefore, fluid can be injected into the brewing chamber 100 through the guide component 500. In other embodiments, a dedicated delivery pipeline can also be provided to inject fluid into the brewing chamber 100, which is not limited here.

[0083] The control piston 800 is raised to compress the fluid and brewing material on the extraction piston 800 to form a beverage, and the first flow guide channel 300 is opened to guide the beverage to the corresponding device through the opened first flow guide channel 300;

[0084] The piston 800 is controlled to descend, and the piston 800 can descend to the bottom of the brewing chamber 100, so that negative pressure is generated in the brewing chamber 100, so as to close the first guide channel 300 and open the second guide channel 400, and the residual beverage falls onto the piston 800 through the opened second guide channel 400;

[0085] The brewing chamber 100 and the brewing part 200 are controlled to move away from each other until the brewing port 102 of the brewing chamber 100 is opened. In actual implementation, the brewing chamber 100 can be controlled to move away from the brewing part 200, or the brewing part 200 can be controlled to move away from the brewing chamber 100, or both the brewing chamber 100 and the brewing part 200 can be controlled to move so that the brewing chamber 100 and the brewing part 200 move away from each other;

[0086] The control piston member 800 rises to the top of the brewing chamber 100 , and the fluid is discharged from the brewing port 102 of the brewing chamber 100 .

[0087] In the above solution, the rising of the piston 800 can also extract the fluid to produce a beverage, and can avoid the need to separately open a slag discharge port and to add devices to control the opening and closing of the slag discharge port, thereby reducing costs and having good practicality.

[0088] Embodiment 2:

[0089] In this embodiment, the second switching member 700 and the second guide channel 400 of the first embodiment are eliminated, and a guide portion is provided on the first switching member 600, the guide portion connecting the guide member 500 and the brewing chamber 100, when the brewing member 200 and the brewing chamber 100 move close to each other, the first guide channel 300 is opened, and the fluid in the brewing chamber 100 is led out to the guide member 500 through the first guide channel 300 and the guide portion; when the brewing member 200 and the brewing chamber 100 move apart, the residual fluid in the guide member 500 is led into the brewing chamber 100 through the guide portion and discharged through the brewing port 102.

[0090] When the anti-residue device provided by the present application is actually used, after the brewing of the fluid in the brewing chamber 100 is completed, the brewing part 200 and the brewing chamber 100 are controlled to move closer to each other, the first guide channel 300 is opened, and the fluid in the brewing chamber 100 is drained to the corresponding equipment through the first guide channel 300 and the guide part to prepare beverages; after the preparation of the beverage is completed, the brewing part 200 and the brewing chamber 100 are controlled to move away from each other, negative pressure is generated in the brewing chamber 100, the first guide channel 300 is closed, and the residual fluid in the guide part 500 is drained into the brewing chamber 100 through the guide part and discharged through the brewing port 102 of the brewing chamber 100, so that the fluid retained in the guide part 500 can be discharged from the brewing chamber 100, so as to avoid the problem of fluid quality degradation due to long-term retention of the fluid, so as to improve the user experience.

[0091] In some embodiments, the guide portion may include a first guide groove 605 (eg, Fig.10 ), or / and, a first guide hole 606 (as shown in Fig.11 , Fig.12As shown), the first guide hole 606 is arranged along the axial direction parallel to or through the first valve core 601. When the head of the first valve core 601 blocks the first guide channel, the first guide groove 605 and / or the first guide hole 606 connect the first guide channel and the brewing chamber.

[0092] Under the condition that the guide part is the first guide groove 605, the first guide groove 605 can be U-shaped, and the two ends of the first guide groove 605 are relatively arranged at the end of the head of the first valve core 601 facing the body of the first valve core 601, and the middle part of the first guide groove 605 is arranged at the end of the head of the first valve core 601 facing away from the body of the first valve core 601, and the first guide groove 605 is connected to the first liquid inlet channel 301. The first guide groove 605 can be provided with one or more channels. In the case of providing multiple channels, the middle parts of the multiple first guide grooves 605 can meet at the center of the head of the first valve core 601. In specific implementation, after the brewing of the fluid in the brewing chamber 100 is completed, when the brewing component 200 and the brewing chamber 100 are controlled to move closer, the fluid in the brewing chamber 100 is compressed and flows into the first guide channel 300, acting on the head of the first valve core 601, forcing the first elastic component 602 to be compressed, so that the fluid can flow out through the gap between the body of the first valve core 601 and the first guide channel 300 and the first guide groove 605 to open the first guide channel 300; conversely, the brewing component 200 and the brewing chamber 100 are controlled to move away from each other, due to the negative pressure generated in the brewing chamber 100, the first elastic component 602 is forced to drive the first valve core 601 to return to close the first guide channel 300, and the fluid retained in the guide component 500 flows to the brewing chamber 101 of the brewing chamber 100 through the first guide groove 605, and is discharged through the brewing port, so as to avoid the problem of fluid quality degradation due to long-term retention of the fluid, so as to improve the user experience.

[0093] Under the condition that the guide part is the first guide hole 606, the first guide hole 606 can be provided with one or more channels. The first guide hole 606 can be provided along the axial direction of the first valve core 601 or parallel to the axial direction of the first valve core 601, or can be inclined to the axial direction of the first valve core 601. It is only necessary to ensure that the first guide hole 606 and the first liquid inlet channel 301 are connected. In specific implementation, after the brewing of the fluid in the brewing chamber 100 is completed, the brewing component 200 and the brewing chamber 100 are controlled to move closer to each other, the fluid in the brewing chamber 100 is compressed and flows into the first guide channel 300, acting on the head of the first valve core 601, forcing the first elastic component 602 to be compressed, so that the fluid can flow out through the gap between the body of the first valve core 601 and the first guide channel 300 and the first guide hole 606 to open the first guide channel 300; conversely, the brewing component 200 and the brewing chamber 100 are controlled to move away from each other, due to the negative pressure generated in the brewing chamber 100, the first elastic component 602 is forced to drive the first valve core 601 to return to its position to close the first guide channel 300, and the fluid retained in the guide component 500 flows to the brewing chamber 101 of the brewing chamber 100 through the first guide hole 606, and is discharged through the brewing port 102, so as to avoid the problem of fluid quality degradation due to long-term retention of the fluid, so as to improve the user experience.

[0094] In addition, the guide portion may also be a combination of the first guide groove 605 and the first guide hole 606 , and its implementation method may refer to the above description and will not be elaborated here.

[0095] Based on the above-mentioned anti-residue device, this embodiment also discloses a beverage preparation method. Fig.13 The flowchart of the beverage preparation method based on the anti-residue device of the first embodiment is shown. Fig.13 , the beverage preparation method comprises:

[0096] Putting brewing material into the brewing chamber 101 of the brewing chamber 100: When the brewing chamber 100 and the brewing part 200 are completely separated, the brewing port 102 at the top of the brewing chamber 100 is opened, and brewing material is put into the brewing chamber 101 of the brewing chamber 100 through the opened brewing port 102. The brewing material can be coffee beans, etc., and the brewing material falls onto the top of the piston part 800;

[0097] Control the brewing chamber and the brewing part to move closer to each other until the brewing part closes the brewing port of the brewing chamber: in actual implementation, the brewing chamber 100 can be controlled to move toward the brewing part 200, or the brewing part 200 can be controlled to move toward the brewing chamber 100, or both the brewing chamber 100 and the brewing part 200 can be controlled to move, so that the brewing chamber 100 and the brewing part 200 move closer to each other;

[0098] Injecting fluid into the brewing chamber 102: As the brewing chamber 100 and the brewing component 200 move closer to each other, the air in the brewing chamber 100 is compressed, the first guide channel 300 is at least partially opened, and the guide part is also in an open state. Therefore, fluid can be injected into the brewing chamber 100 through the guide component 500. In other embodiments, a dedicated delivery pipeline can also be provided to inject fluid into the brewing chamber 100, which is not limited here.

[0099] The control piston 800 is raised to compress the fluid and brewing material on the extraction piston 800 to form a beverage, and the first flow guide channel 300 is opened to guide the beverage to the corresponding device through the opened first flow guide channel 300;

[0100] The piston 800 is controlled to descend, and the piston 800 can descend to the bottom of the brewing chamber 100, so that negative pressure is generated in the brewing chamber 100 to close the first guide channel 300, and the residual beverage falls onto the piston 800 through the guide channel;

[0101] The brewing chamber 100 and the brewing part 200 are controlled to move away from each other until the brewing port 102 of the brewing chamber 100 is opened. In actual implementation, the brewing chamber 100 can be controlled to move away from the brewing part 200, or the brewing part 200 can be controlled to move away from the brewing chamber 100, or both the brewing chamber 100 and the brewing part 200 can be controlled to move so that the brewing chamber 100 and the brewing part 200 move away from each other;

[0102] The control piston member 800 rises to the top of the brewing chamber 100 , and the fluid is discharged from the brewing port 102 of the brewing chamber 100 .

[0103] In the above solution, the rising of the piston 800 can also extract the fluid to produce a beverage, and can avoid the need to separately open a slag discharge port and to add devices to control the opening and closing of the slag discharge port, thereby reducing costs and having good practicality.

[0104] Embodiment three:

[0105] In this embodiment, the second switching member and the second guide channel of the first embodiment are cancelled, and the first guide groove 605 and the first guide hole 606 of the second embodiment are also cancelled. The guide part of the third embodiment is arranged on the first valve seat 603 on the first switching member 600, and specifically includes: a second guide groove 607 (such as Fig.14 ), or / and, a second guide hole 608 (as shown in Fig.15 and Fig.16As shown), the axial direction of the second guide hole 608 is parallel to the axial direction of the first valve core 601. When the head of the first valve core 601 blocks the first guide channel, the second guide groove 607 and / or the second guide hole 608 connect the first guide channel and the brewing chamber.

[0106] When the guide portion is the second guide groove 607, the second guide groove 607 may be U-shaped, with two ends of the second guide groove 607 relatively disposed at the top of the first valve seat 603, the middle of the second guide groove 607 disposed at the bottom center of the first valve seat 603, and the second guide groove 607 communicates with the first through hole 204. The second guide groove 607 may be provided with one or more channels, and when multiple channels are provided, the middles of the multiple second guide grooves 607 may converge at the bottom center of the first valve seat 603. In specific implementation, after the brewing of the fluid in the brewing chamber 100 is completed, the brewing component 200 and the brewing chamber 100 are controlled to move closer to each other, the fluid in the brewing chamber 100 is compressed and flows into the first guide channel 300, acting on the head of the first valve core 601, forcing the first elastic component 602 to be compressed, so that the fluid can flow out through the gap between the body of the first valve core 601 and the first guide channel 300 and the second guide groove 607 to open the first guide channel 300; conversely, the brewing component 200 and the brewing chamber 100 are controlled to move away from each other, due to the negative pressure generated in the brewing chamber 100, the first elastic component 602 is forced to drive the first valve core 601 to return to its position to close the first guide channel 300, and the fluid retained in the guide component 500 flows to the brewing chamber 101 of the brewing chamber 100 through the second guide groove 607, and is discharged through the brewing port 102, so as to avoid the problem of fluid quality degradation due to long-term retention of the fluid, so as to improve the user experience.

[0107] Under the condition that the guide part is the second guide hole 608, the second guide hole 608 can be provided with one or more channels. The second guide hole 608 can be provided parallel to the axial direction of the first valve core 601, or can be inclined to the axial direction of the first valve core 601. It is only necessary to ensure that the second guide hole 608 and the first through hole 204 are connected. In specific implementation, after the brewing of the fluid in the brewing chamber 100 is completed, the brewing component 200 and the brewing chamber 100 are controlled to move closer to each other, the fluid in the brewing chamber 100 is compressed and flows into the first guide channel 300, acting on the head of the first valve core 601, forcing the first elastic component 602 to be compressed, so that the fluid can flow out through the gap between the body of the first valve core 601 and the first guide channel 300 and the second guide hole 608 to open the first guide channel 300; conversely, the brewing component 200 and the brewing chamber 100 are controlled to move away from each other, due to the negative pressure generated in the brewing chamber 100, the first elastic component 602 is forced to drive the first valve core 601 to return to its position to close the first guide channel 300, and the fluid retained in the guide component 500 flows to the brewing chamber 101 of the brewing chamber 100 through the second guide hole 608, and is discharged through the brewing port 102, so as to avoid the problem of fluid quality degradation due to long-term retention of the fluid, so as to improve the user experience.

[0108] In addition, the guide portion may also be a combination of the second guide groove 607 and the second guide hole 608 , and its implementation method may refer to the above description and will not be elaborated here.

[0109] This embodiment also provides a beverage preparation method, and the details can be referred to the description of the third embodiment, which will not be repeated here.

[0110] Embodiment 4:

[0111] In this embodiment, the guide part can be a combination of at least two of the second guide channel and the second switching member in Example 1, the first guide groove 605 and / or the first guide hole 606 in Example 2, and the second guide groove 607 and / or the second guide hole 608 in Example 3. The implementation method thereof can be referred to the above description and will not be repeated here.

[0112] Embodiment five:

[0113] An embodiment of the present application provides an electrical device, which includes the above-mentioned anti-residue device.

[0114] The electrical equipment with the above-mentioned anti-residue device can discharge the fluid retained in the guide member 500 out of the brewing chamber 100, so that the residual fluid can be recovered in time, avoiding the fluid with a lowered temperature in the next brewing cycle from mixing with the fresh fluid, ensuring the temperature and flavor of the fresh fluid, that is, avoiding the problem of fluid quality degradation due to long-term retention of the fluid, so as to improve the user experience.

[0115] The electrical device may be the above-mentioned fully automatic coffee machine, or may be other types of beverage equipment, such as various types of beverage equipment, etc., which is not limited here.

[0116] The specific operation is that a control panel may be provided on the electrical device, and the control panel may be provided with instructions corresponding to the above-mentioned anti-residue mode. When the user presses or touches the instruction corresponding to the control panel, the anti-residue mode of the electrical device can be controlled to run; or, a sensor may be provided in the electrical device, and the user may control various instructions by remote control or the like to realize the operation of the anti-residue mode of the electrical device. The embodiment of the present application does not impose any specific restrictions on this.

[0117] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0118] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0001] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0002] In the description of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0003] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0004] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0005] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An anti-residue device, characterized in that: The anti-residue device comprises: A brewing bin is provided with a brewing chamber, and the brewing chamber is provided with a brewing port; A brewing element, which moves through the brewing port, and moves back and forth relative to the brewing chamber, and a first guide channel is provided in the brewing element; a flow guide member, communicating with the brewing chamber through the opened first flow guide channel; a first switching member, disposed in the first flow guiding channel to open and close the first flow guiding channel, the first switching member being provided with a flow guiding portion, the flow guiding portion being connected with the flow guiding member and the brewing chamber; When the brewing component and the brewing chamber move closer to each other, the first guide channel opens, and the fluid in the brewing chamber is led out to the guide component through the first guide channel; when the brewing component and the brewing chamber move separately, the residual fluid in the guide component is led into the brewing chamber through the guide part and discharged through the brewing port.

2. The anti-residue device according to claim 1, characterized in that: The first switching element comprises: a first valve core, movably disposed in the first flow guiding channel, the head of the first valve core facing the brewing chamber, the head of the first valve core blocking the first flow guiding channel, the periphery of the first valve core being disposed in the first flow guiding channel with clearance, and the projection of the periphery of the first valve core falling within the head of the first valve core; The first elastic member has two ends connected to the back of the first valve core and the inner wall of the first flow guide channel respectively.

3. The anti-residue device according to claim 2, characterized in that: The guide portion comprises: A first guide groove is arranged on the outer peripheral surface of the head of the first valve core, or / and a first guide hole is arranged on the first valve core, the first guide hole is arranged to pass through in parallel with the axial direction of the first valve core or along the axial direction of the first valve core, and under the condition that the head of the first valve core blocks the first guide channel, the first guide groove and / or the first guide hole connect the first guide channel and the brewing chamber.

4. The anti-residue device according to claim 2 or 3, characterized in that: The first switching member further includes: The first valve seat is arranged at one end of the guide channel facing the brewing chamber, and a first liquid inlet channel and a first liquid expansion channel are arranged in the first valve seat. The brewing chamber, the first liquid inlet channel and the first liquid expansion channel are connected in sequence, and the cross-sectional area of ​​the first liquid expansion channel increases in sequence in the direction away from the brewing chamber. The head of the first valve core is movably arranged in the first liquid expansion channel.

5. The anti-residue device according to claim 4, characterized in that: The guide portion comprises: A second guide groove is arranged on the inner wall of the first liquid expansion channel, or / and a second guide hole is arranged on the first valve seat, the axial direction of the second guide hole is parallel to the axial direction of the first valve core, and under the condition that the head of the first valve core blocks the first guide channel, the second guide groove and / or the second guide hole connect the first guide channel and the brewing chamber.

6. The anti-residue device according to any one of claims 1 to 3 and 5, characterized in that: The head of the brewing part is provided with a filter port, and a filter net is provided in the filter port.

7. The anti-residue device according to any one of claims 1 to 3 and 5, characterized in that: The anti-residue device also includes: The piston is arranged in the brewing chamber so as to be reciprocatingly movable, so as to receive the residual fluid and guide the residual fluid to the brewing port for discharge.

8. A method for preparing a beverage, characterized in that: The beverage preparation method is performed based on the anti-residue device according to claim 7, and the beverage preparation method comprises: Putting brewing material into the brewing chamber of the brewing bin; Controlling the brewing chamber and the brewing component to move closer to each other until the brewing component closes the brewing port of the brewing chamber; injecting fluid into the brewing chamber; Controlling the piston to rise, so as to compress and extract the fluid and brewing material on the piston to form a beverage, and opening the first flow guide channel to guide the beverage to the corresponding device through the opened first flow guide channel and the flow guide portion; Controlling the piston to descend, so that negative pressure is generated in the brewing chamber to close the first flow guide channel, and the remaining beverage falls onto the piston through the flow guide channel; Controlling the brewing chamber and the brewing component to move away from each other until the brewing port of the brewing chamber is opened; The piston is controlled to rise to the top of the brewing chamber, and the fluid is discharged from the brewing port of the brewing chamber.

9. The beverage preparation method according to claim 8, characterized in that: The controlling the brewing chamber and the brewing element to move closer to each other specifically includes: Control the brewing chamber to move towards the direction close to the brewing part, or / and control the brewing part to move towards the direction close to the brewing chamber.

10. The beverage preparation method according to claim 8, characterized in that: The controlling the brewing chamber and the brewing element to move away from each other specifically includes: Control the brewing chamber to move in a direction away from the brewing component, or / and control the brewing component to move in a direction away from the brewing chamber.

11. An electrical device, characterized in that: The electrical equipment comprises the anti-residue device according to any one of claims 1-8.

12. The electrical device according to claim 11, characterized in that: The electrical equipment is a fully automatic coffee machine.

Images