Brewing core of coffee machine
By canceling the rear end plate of the brewing core of the coffee machine and setting a sealing ring, the dust accumulation problem is solved, ensuring that the coffee powder does not get stuck behind the filter plate, achieving convenient high-pressure brewing and cleaning, and improving the service life of the coffee machine Brewing stability.
Patent Information
- Application Number
- CN202420334071.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-22
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-02-22
AI Technical Summary
After long-term use of the existing horizontally arranged coffee machine brewing core, the coffee powder is prone to get stuck between the movable filter plate and the brewer back end plate, resulting in dust accumulation and corruption, affecting taste and health, and may lead to failure.
Cancel the brewer rear end plate, set the first sealing ring on the outer edge of the movable filter plate and the inner convex ring on the rear opening of the brewer to ensure high-pressure sealing, and realize water connection through the design of the front and rear tubes to ensure that the coffee powder is not It is stuck behind the filter plate, while avoiding complex docking structures, solving guidance and water supply problems at low cost.
Effectively clean the coffee powder stuck behind the filter plate to prevent corruption, ensure taste and hygiene, ensure normal return of the movable filter plate, ensure brewing stability, and achieve high water pressure brewing requirements.
Smart Images
Figure CN222265027U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a component of a coffee machine, in particular to a brewing core of a coffee machine. Background Art
[0002] The brewing core of a coffee machine is a core component of the coffee machine for brewing coffee. The present application relates to a transverse brewing core, that is, the main components of the core are distributed and move transversely.
[0003] The prior art coffee machine brewing core is arranged horizontally, and it comprises a bracket, a top, a brewer and a water inlet pipe; the bracket is fixed with a guide rod, the guide rod is slidably matched with a guide sleeve, the bracket is equipped with a lead screw driven by a motor, the lead screw is screwed with a sliding sleeve, and the guide sleeve and the sliding sleeve are respectively fixed on both sides of the top head; the brewer is fixed to the bracket, the front end of the brewer is open and the opening faces the top head, and the powder drop port is located near the opening of the brewer; the inner cavity of the brewer is sleeved with a movable filter plate, and the linkage shaft of the movable filter plate is slidably sealed with the central hole of the rear end plate of the brewer; the water inlet pipe passes through the rear end plate and communicates with the inner cavity of the brewer, and a liquid outlet pipe is provided in the top head; the rear end of the linkage shaft is fixed with a linkage sleeve through a connecting rod, the linkage sleeve is slidably matched on the guide rod, and a compression spring is sleeved on the guide rod, and the two ends of the compression spring are respectively against the guide sleeve and the linkage sleeve; the guide sleeve is provided with a convex rib, and the front section of the linkage sleeve is provided with a hook for hooking the convex rib, and the bracket is provided with a wedge block for lifting the hook to separate the hook from the convex rib when the movable filter plate pushes the coffee grounds out of the brewer.
[0004] The action process of the brewing core is as follows: in the initial state, the compression spring pushes the linkage sleeve backward, thereby driving the movable filter plate to approach the rear end plate of the brewer; during brewing, coffee powder falls into the brewer from the powder drop port, and then the lead screw drives the top head into the brewer opening through the sliding sleeve, thereby compacting the coffee powder. The top head, the annular inner wall of the brewer and the movable filter plate constitute a closed brewing chamber, and the water inlet pipe injects water into the brewing chamber to brew coffee, and discharges the coffee liquid from the liquid outlet pipe; in the process of the top head moving forward to the brewer to compact the coffee powder, the convex rib of the guide sleeve will hook the hook of the linkage sleeve After brewing is finished, when the top head retreats and separates from the brewer, the convex rib will pull the linkage sleeve, and the movable filter plate will be driven to retreat synchronously with the top head through the connecting rod and the linkage shaft, and the brewed coffee grounds will be pushed out of the opening of the brewer; and after the coffee grounds are pushed out of the brewer, the top head continues to drive the linkage sleeve to retreat, causing the hook of the linkage sleeve to contact the wedge block of the bracket and be lifted by the wedge block, thereby separating from the convex rib of the guide sleeve. In this way, the linkage sleeve and the movable filter plate will be reset under the action of the compression spring and return to the vicinity of the rear end plate of the brewer to wait for the next brewing process.
[0005] After long-term use, it was found that the above-mentioned horizontal brewing core has a disadvantage: Figure 1As shown, the coffee bean grinder is arranged above the powder drop opening 101. In theory, the coffee bean grinder will drop coffee powder only when the cutter head motor is started in the bean grinding state. However, in reality, the powder drop process of the coffee bean grinder cannot be prohibited. Even after the cutter head motor is stopped, there will always be a part of the coffee powder that continues to drop due to gravity or the shaking of other parts. Coincidentally, when the coffee is brewed and the brewing core is discharged, the movable filter plate 102 will push the coffee grounds forward to cross the powder drop opening. At this moment, some coffee powder will fall behind the movable filter plate, and as the movable filter plate is reset and retreated, this part of the coffee powder will eventually be stuck between the movable filter plate and the rear end plate 104 of the brewer 103. The above-mentioned powder stuck part is located inside the brewer, which is a dead corner and is difficult to clean. Moreover, the coffee powder stuck behind the movable filter plate will accumulate more and more over time, and the accumulation will become thicker and thicker. After corruption and deterioration, bacteria will grow, affecting the taste and health. It will also cause the movable filter plate to be unable to return to the rear end plate position, making the thickness of the brewing chamber smaller and smaller, affecting brewing and causing failures. Utility Model Content
[0006] The technical problem to be solved by the utility model is to provide a brewing core of a coffee machine which can conveniently and quickly clean the coffee powder stuck behind the movable filter plate of the brewer.
[0007] The technical solution of the utility model is to provide a brewing core of a coffee machine, which includes a bracket, a top head, a brewer and a water inlet pipeline; the bracket is fixed with a guide rod, the guide rod is slidably matched with a guide sleeve, the bracket is installed with a lead screw driven by a motor, the lead screw is screwed with a sliding sleeve, and the guide sleeve and the sliding sleeve are respectively fixed on both sides of the top head; the brewer is fixed to the bracket, the front end opening of the brewer faces the top head, and the powder drop port is located near the front opening of the brewer; a movable filter plate is provided in the brewer, and a liquid outlet pipeline is provided in the top head; the linkage shaft of the movable filter plate is fixed with a linkage sleeve via a connecting rod, the linkage sleeve is slidably matched on the guide rod, and a first compression spring is sleeved on the guide rod, and the two ends of the first compression spring are against the guide sleeve and the linkage sleeve; a convex rib is provided on the guide sleeve, and the linkage sleeve is provided with a A hook for hooking the convex rib is provided on the bracket for lifting the hook when the movable filter plate pushes the coffee grounds out of the brewer; the rear end of the brewer is open but no end plate is provided, a first sealing ring is provided on the outer edge of the movable filter plate, a positioning sleeve is fixed to the bracket, the linkage shaft is movably fitted with the positioning hole of the positioning sleeve, and two second sealing rings sealed with the wall of the positioning hole are provided on the linkage shaft; the water inlet pipeline includes a front pipe provided in the positioning sleeve and a rear pipe provided in the linkage shaft, the outlet of the rear pipe is located on the front surface of the movable filter plate, the inlet of the rear pipe is located on the side wall of the linkage shaft and the inlet is located between the two second sealing rings, and the outlet of the front pipe is located on the wall of the positioning hole; when the movable filter plate abuts against the positioning sleeve, the first sealing ring is sealed with the rear opening of the brewer, and the outlet of the front pipe is located between the two second sealing rings.
[0008] Compared with the prior art, the brewing core of the coffee machine using the above structure has the following advantages.
[0009] First of all, the core eliminates the rear end plate of the brewer, which solves the problem of powder accumulation behind the movable filter plate when the movable filter plate discharges the slag over the powder drop port. The movable filter plate will push the coffee powder at the rear from the rear opening of the brewer; thereby eliminating the dead corners of slag accumulation and powder jamming, avoiding the accumulation of coffee powder between the rear end plate and the movable filter plate, and preventing the jammed powder from deteriorating and corrupting, ensuring the taste, hygiene and health, and ensuring that the movable filter plate can return to the rear end of the brewer every time, avoiding the thickness of the brewing chamber from becoming thinner, and ensuring brewing stability.
[0010] What is more valuable is that although the rear end plate is cancelled, it does not affect the guiding and sealing of the movable filter plate. A full circle of first sealing ring is arranged on the outer edge of the movable filter plate to fit with the rear opening of the brewer to meet the high-pressure sealing requirement of the brewing chamber; and the movable filter plate and the rear opening of the brewer, the linkage shaft and the positioning sleeve are doubly guided to ensure that the movable filter plate slides accurately along the center along a straight line; furthermore, the front tube is arranged on the guide sleeve and the rear tube is arranged on the linkage shaft. When the movable filter plate is pressed to the brewing position, the front tube outlet and the rear tube inlet are simultaneously located between the two second sealing rings, thereby connecting the water path, solving the problem of no fixed structure for installing the high-pressure water supply pipe after the rear end plate is cancelled, and successfully supplying water to the brewing chamber sealed by the movable filter plate. Since the water path is connected and sealed ideally, the brewing requirement of high water pressure can be met; what is more, the above-mentioned water supply structure does not have an additional complex docking structure, but is integrated into the existing structure positioning sleeve and linkage shaft, so that one object serves two purposes and kills two birds with one stone, thereby solving the guiding and water supply problems simultaneously at a low cost.
[0011] In summary, the brewing core can brew smoothly, and after brewing, the coffee grounds can be smoothly discharged from the front opening of the brewer and it can be ensured that the powder will not be stuck behind the movable filter plate.
[0012] Preferably, the rear opening of the brewer is provided with a circle of inwardly convex radial convex rings, and the first sealing ring can be sealed with the radial convex ring, and there is a gap between the ordinary inner wall at the front of the brewer and the first sealing ring; firstly, the sealing performance of the movable filter plate and the inner wall of the brewer is improved, and the brewing water pressure is increased; moreover, when the slag is pushed forward to discharge after brewing, there is a gap between the movable filter plate and the ordinary inner wall, which can effectively reduce scratches, reduce the wear of the sealing ring, and increase the service life of the brewing core.
[0013] As a further preferred embodiment, a clamping ring is provided at the tail of the bracket, a blind hole is provided at the rear end of the linkage shaft, and a second compression spring for pushing the movable filter plate forward is provided between the clamping ring and the bottom of the blind hole, and the elastic force of the second compression spring is greater than that of the first compression spring; in this way, when the top head retreats toward the front opening of the brewer after brewing, the vacuum negative pressure in the brewing chamber makes it difficult to pull the top head, and the second compression spring quickly pushes the movable filter plate forward after the top head retreats slightly, destroying the vacuum negative pressure in the brewing chamber and connecting it with the atmosphere, thereby reducing the resistance of pulling the top head and the movable filter plate forward and making the forward slag discharge smoother.
[0014] As a further preferred embodiment, the bracket includes an upper shell cover and a lower shell cover, the upper shell cover is provided with a flushing hole, and the lower shell cover is provided with a slag discharge port, the flushing hole and the slag discharge port are respectively located above and below the rear opening of the brewer; in this way, after the movable filter plate pushes the coffee powder behind it out of the rear opening of the brewer, water is injected into the flushing hole, so that the coffee powder in the rear opening of the brewer can be rinsed clean and completely discharged from the slag discharge port to avoid residue remaining in the brewing core. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the semi-section structure of the brewing core of the prior art coffee machine.
[0016] Figure 2 It is a schematic diagram of the structure of the brewing core of the coffee machine of the utility model after removing the motor component.
[0017] Figure 3 yes Figure 2 Schematic diagram of the structure after deflection at a certain angle.
[0018] Figure 4 yes Figure 2 Schematic diagram of the structure after removing the bracket.
[0019] Figure 5 yes Figure 4 Schematic diagram of the structure after deflection at a certain angle.
[0020] Figure 6 It is a semi-sectional structural schematic diagram of the brewing core of the coffee machine of the utility model.
[0021] Figure 7 The utility model is a schematic diagram of the exploded structure of a positioning sleeve and a half-cut movable filter plate of a brewing core of a coffee machine.
[0022] As shown in the figure
[0023] Prior art parts 101, powder drop port, 102, movable filter plate, 103, brewer, 104, rear end plate;
[0024] The utility model comprises the following parts: 1. a bracket; 1.1. an upper shell cover; 1.2. a lower shell cover; 2. a top head; 3. a brewer; 3.1. a radial convex ring; 4. a water inlet pipe; 4.1. a front pipe; 4.2. a rear pipe; 4.2.1. a front vertical section; 4.2.2. a central hole section; 5. a liquid outlet pipe; 6. a guide rod; 7. a guide sleeve; 8. a lead screw; 9. a sliding sleeve; 10. a powder drop port; 11. a movable filter plate; 12. a linkage shaft; 12.1. a blind hole; 13. a linkage sleeve; 14. a first compression spring; 15. a convex rib; 16. a hook; 17. a wedge block; 18. a connecting rod; 19. a first sealing ring; 20. a positioning sleeve; 20.1. a positioning hole; 20.2. a pipe joint; 21. a second sealing ring; 22. a retaining ring; 23. a second compression spring; 24. a flushing hole; 25. a slag discharge port. DETAILED DESCRIPTION
[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0026] like Figures 2 to 7 As shown, the brewing core of the coffee machine of the utility model comprises a bracket 1, a top head 2, a brewer 3 and a water inlet pipe 4. A liquid outlet pipe 5 for coffee to flow out is provided in the top head 2. A guide rod 6 is fixed to the bracket 1, and a guide sleeve 7 is slidably matched with the guide rod 6. A lead screw 8 driven by a motor is installed on the bracket 1, and a sliding sleeve 9 is screwed on the lead screw 8. The guide sleeve 7 and the sliding sleeve 9 are respectively fixed on both sides of the top head 2. The brewer 3 is fixed to the bracket 1, and the front end of the brewer 3 is open and the front opening faces the top head 2. The powder drop port 10 faces upward and is located near the front opening of the brewer 3.
[0027] A movable filter plate 11 is provided in the brewer 3, and a linkage sleeve 13 is fixed to the linkage shaft 12 of the movable filter plate 11 via a connecting rod 18. The linkage sleeve 13 is slidably fitted on the guide rod 6, and a first compression spring 14 is sleeved on the guide rod 6. Both ends of the first compression spring 14 abut against the guide sleeve 7 and the linkage sleeve 13; its function is to push the linkage sleeve 13 backward in the non-brew stage, thereby driving the movable filter plate 11 to approach the rear end of the brewer 3.
[0028] The guide sleeve 7 is provided with a convex rib 15, and the linkage sleeve 13 is provided with a hook 16 for hooking the convex rib 15. When brewing, the head 2 moves forward into the brewer 3, causing the hook 16 to hook the convex rib 15. After brewing, the head 2 moves back, which drives the movable filter plate 11 to push the residue toward the front of the brewer 3. The bracket 1 is provided with a wedge block 17 for lifting the hook 16 after the movable filter plate 11 pushes the coffee residue out of the brewer 3; the wedge block 17 lifts the hook 16 to separate it from the convex rib 15, so that the linkage sleeve 13 and the movable filter plate 11 will be reset under the action of the first compression spring 14, and return to the vicinity of the rear end plate of the brewer 3 to wait for the next brewing process.
[0029] The above are the same parts as the prior art, and the improvements of this application are as follows.
[0030] The rear end of the brewer 3 is open without an end plate, a first sealing ring 19 is provided on the outer edge of the movable filter plate 11, a positioning sleeve 20 is fixed to the bracket 1, and the positioning sleeve 20 is located behind the brewer 3, and the linkage shaft 12 is movably fitted with the positioning hole 20.1 of the positioning sleeve 20. The linkage shaft 12 is provided with two second sealing rings 21 that are sealed with the hole wall of the positioning hole 20.1. The water inlet pipeline 4 includes a front pipe 4.1 arranged in the positioning sleeve 20 and a rear pipe 4.2 arranged in the linkage shaft 12; a pipe joint 20.2 is arranged in the positioning sleeve 20, the inlet of the front pipe 4.1 is located at the front end of the pipe joint 20.2, the outlet of the front pipe 4.1 is located at the hole wall of the positioning hole 20.1, and the entire front pipe 4.1 is L-shaped; the rear pipe 4.2 is also roughly L-shaped, and the rear pipe 4.2 includes a front vertical section 4.2.1 and a central hole section 4.2.2 of the main body, the inlet of the front vertical section 4.2.1 of the rear pipe 4.2 is located on the side wall of the linkage shaft 12 and the inlet is located between the two second sealing rings 21, and the outlet of the rear pipe 4.2 is located on the front surface of the movable filter plate 11.
[0031] When the movable filter plate 11 abuts against the positioning sleeve 20, the movable filter plate 11 is in the rear limit position, that is, the brewing state. At this time, the first sealing ring 19 is sealed with the rear opening of the brewer 3, and the outlet of the front pipe 4.1 is located between the two second sealing rings 21. In other words, at this time, the outlet of the front pipe 4.1 and the inlet of the rear pipe 4.2 are both located between the two second sealing rings 21, thereby realizing the connection of the high-pressure water circuit.
[0032] The rear opening of the brewer 3 is provided with a circle of inwardly convex radial convex ring 3.1, and the first sealing ring 19 can seal with the radial convex ring 3.1. There is a gap between the common inner wall of the front part of the brewer 3, that is, the inner wall other than the radial convex ring 3.1, and the first sealing ring 19.
[0033] A snap ring 22 is fixed to the rear of the bracket 1, a blind hole 12.1 is provided at the rear end of the linkage shaft 12, and a second compression spring 23 for pushing the movable filter plate 11 forward is provided between the snap ring 22 and the bottom of the blind hole 12.1. The elastic force of the second compression spring 23 is greater than that of the first compression spring 14.
[0034] The bracket 1 comprises an upper shell cover 1.1 and a lower shell cover 1.2. The upper shell cover 1.1 is provided with a flushing hole 24, and the lower shell cover 1.2 is provided with a slag discharge port 25. The flushing hole 24 and the slag discharge port 25 are respectively located above and below the rear opening of the brewer 3.
Claims
1. A brewing core of a coffee machine, which comprises a bracket, a top head, a brewer and a water inlet pipeline; the bracket is fixed with a guide rod, the guide rod is slidably matched with a guide sleeve, the bracket is equipped with a lead screw driven by a motor, the lead screw is screwed with a sliding sleeve, the guide sleeve and the sliding sleeve are respectively fixed on both sides of the top head; the brewer is fixed to the bracket, the front end opening of the brewer faces the top head, and the powder drop port is located near the front opening of the brewer; a movable filter plate is arranged in the brewer, and a liquid outlet pipeline is arranged in the top head; the linkage shaft of the movable filter plate is fixed with a linkage sleeve through a connecting rod, the linkage sleeve is slidably matched on the guide rod, and a first compression spring is sleeved on the guide rod, and the two ends of the first compression spring are against the guide sleeve and the linkage sleeve; a convex rib is arranged on the guide sleeve, and the linkage sleeve is provided with a hook for hooking the convex rib, and a wedge block for lifting the hook is arranged on the bracket when the movable filter plate pushes the coffee grounds out of the brewer; it is characterized in that: The rear end of the brewer is open but not provided with an end plate, a first sealing ring is provided on the outer edge of the movable filter plate, a positioning sleeve is fixed to the bracket, the linkage shaft is movably fitted with the positioning hole of the positioning sleeve, and two second sealing rings sealed with the wall of the positioning hole are provided on the linkage shaft; the water inlet pipeline comprises a front pipe arranged in the positioning sleeve and a rear pipe arranged in the linkage shaft, the outlet of the rear pipe is located on the front surface of the movable filter plate, the inlet of the rear pipe is located on the side wall of the linkage shaft and the inlet is located between the two second sealing rings, and the outlet of the front pipe is located on the wall of the positioning hole; when the movable filter plate abuts against the positioning sleeve, the first sealing ring is sealed with the rear opening of the brewer, and the outlet of the front pipe is located between the two second sealing rings.
2. The brewing core of the coffee machine according to claim 1, characterized in that: The rear opening of the brewer is provided with a circle of inwardly convex radial convex ring, the first sealing ring can be sealed with the radial convex ring, and there is a gap between the common inner wall of the front part of the brewer and the first sealing ring.
3. The brewing core of the coffee machine according to claim 1, characterized in that: A clamping ring is arranged at the rear of the bracket, a blind hole is arranged at the rear end of the linkage shaft, and a second compression spring for pushing the movable filter plate forward is arranged between the clamping ring and the bottom of the blind hole, and the elastic force of the second compression spring is greater than that of the first compression spring.
4. The brewing core of the coffee machine according to claim 1, characterized in that: The bracket comprises an upper shell cover and a lower shell cover. The upper shell cover is provided with a flushing hole, and the lower shell cover is provided with a slag discharge port. The flushing hole and the slag discharge port are respectively located above and below the rear opening of the brewer.