A coffee cold brew machine

Abstract

The application relates to a coffee cold extraction machine, and belongs to the technical field of cold extraction machines.The coffee cold extraction machine comprises a rack, an extraction mechanism, a spraying mechanism and a collecting mechanism.The extraction mechanism comprises an extraction barrel installed on the rack and a ball head plug rod slidably installed on the extraction barrel.The top of the extraction barrel is provided with an extraction cavity, and the bottom of the extraction barrel is provided with an extraction opening for the outflow of extraction liquid.The ball head plug rod reciprocatingly slides on the extraction barrel intermittently so that the extraction opening is opened after a certain time interval.The spraying mechanism is located above the extraction barrel and sprays cold water into the extraction cavity.The spraying mechanism is slidably installed on a stand column, and the stand column is provided with a driving piece for driving the spraying mechanism to slide in the vertical direction so as to compact coffee powder in the extraction cavity.The collecting mechanism comprises a collecting barrel located below the extraction barrel, and the top of the collecting barrel is provided with a collecting cavity in communication with the extraction opening and used for collecting extraction liquid.The application has the effect of improving the cold extraction efficiency of coffee.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold extraction machines, in particular to a coffee cold extraction machine. BACKGROUND

[0002] With the continuous improvement of people's living standards, people's pursuit of coffee quality is getting higher and higher, among which the unique taste of cold extraction coffee is deeply loved by people. When making cold extraction coffee, coffee beans need to be ground into coffee powder, and then the coffee powder is placed in an extraction container and stirred evenly with water, and then it is left to extract for up to 20 hours. Therefore, some well-known coffee brands usually make a large barrel of cold extraction in advance for sale.

[0003] In the related art, a device for cold extraction of coffee beans is disclosed in Chinese Utility Model Patent No. CN216317103U, which includes a cold extraction coffee device body, the cold extraction coffee device body includes a shell, a sealing sleeve, a support sleeve, a filter membrane and a bottom plate, the inner wall of the shell is provided with a screw at the top, the side of the top of the shell is provided with a handle one, the middle of the shell is provided with a handle two, the inside of the shell is provided with a sealing sleeve, the top end of the sealing sleeve is provided with a cover plate, the inside of the sealing sleeve is provided with a cold extraction container, the bottom end of the sealing sleeve is attached with a sealing ring, the middle of the inside of the shell is provided with a through hole, the bottom end of the shell is provided with a support sleeve, the inner wall of the support sleeve is provided with a flow guide plate, and the device for cold extraction of coffee beans is simple and convenient to use.

[0004] In the related art, in the process of making cold extraction coffee, the ground coffee powder still needs to be poured into the sealing sleeve and left to extract with a certain amount of cold water. This method requires a long extraction time when making a large amount of cold extraction coffee, which reduces the efficiency of making cold extraction coffee. SUMMARY

[0005] In order to improve the cold extraction efficiency of coffee, the present application provides a coffee cold extraction machine.

[0006] The coffee cold extraction machine provided by the present application adopts the following technical scheme:

[0007] A coffee cold extraction machine, comprising: a rack, the rack comprising a base, a stand and a support ring plate, the stand being arranged on the top of the base, and the support ring plate being fixedly arranged on the stand;

[0008] The extraction mechanism comprises an extraction barrel for containing coffee powder and a ball plug rod slidingly mounted on the extraction barrel, the extraction barrel is placed on the support ring plate, a top of the extraction barrel is provided with an extraction cavity for containing coffee powder, a bottom of the extraction cavity is provided with a tapered liquid collecting cavity, a bottom of the tapered liquid collecting cavity is provided with an extraction port for allowing extraction liquid to flow out, the bottom of the extraction cavity is provided with a filter plate for separating the extraction cavity and the tapered liquid collecting cavity, the ball plug rod slides at the extraction port to shield or open the extraction port, and the ball plug rod reciprocatingly slides on the extraction barrel intermittently to be opened after the extraction port is shielded for a certain time.

[0009] The spraying mechanism is located above the extraction barrel and sprays cold water into the extraction cavity, the spraying mechanism is slidingly mounted on the column, and a driving member for driving the spraying mechanism to slide in the vertical direction is mounted on the column to compact coffee powder in the extraction cavity.

[0010] The collecting mechanism comprises a collecting barrel located below the extraction barrel, and a top of the collecting barrel is provided with a collecting cavity in communication with the extraction port for collecting extraction liquid.

[0011] Optionally, the spraying mechanism comprises a water containing barrel and a spraying barrel, a top of the water containing barrel is provided with a water containing cavity, a bottom of the water containing cavity is provided with a water outlet penetrating through the water containing barrel, a top of the spraying barrel is provided with a containing cavity, the water containing barrel is located in the containing cavity, the spraying barrel is slidingly sleeved on the water containing barrel, and a bottom of the spraying barrel is provided with a water spraying port in communication with the water outlet to uniformly spray cold water.

[0012] Optionally, a limiting ring is detachably mounted on the top of the spraying barrel, a bottom of the limiting ring abuts against the top of the water containing barrel, a bottom of the containing cavity is provided with a partition sleeve, the partition sleeve is located at the water spraying port and in communication with the water spraying port, a water collecting cavity is spaced between the water containing barrel and the bottom of the containing cavity, the water collecting cavity is in communication with the water outlet, and a water outlet channel is formed in an outer wall of the partition sleeve to communicate the water collecting cavity with an inside of the partition sleeve.

[0013] Optionally, the water outlet channel gradually inclines towards the extraction barrel along an opening direction, a plurality of water outlet channels are circumferentially and uniformly spaced on the partition sleeve, and the water outlet channels on opposite sides of the partition sleeve are symmetrically arranged.

[0014] Optionally, a plug column is provided on the bottom of the water containing barrel to shield or open the water outlet channel by being inserted into the partition sleeve.

[0015] When the bottom of the limiting ring abuts against the top of the water containing barrel, the plug post is partially inside the partition sleeve and partially inside the water collecting cavity, and the part of the plug post inside the partition sleeve does not block the water outlet passage;

[0016] When the coffee powder is compacted, the spray barrel is pressed to move upward, the plug post is inserted into the partition sleeve to block the water outlet passage, the side of the plug post close to the spray barrel is flush with the bottom of the spray barrel, and the side of the partition sleeve close to the water containing barrel abuts against the bottom of the water containing barrel.

[0017] Optionally, the collecting mechanism further comprises a barrel cover arranged on the collecting barrel to cover the collecting cavity, a drip hole is arranged on the barrel cover to connect the extraction port and the collecting cavity, an elastic tube is arranged at the extraction port, the side of the elastic tube away from the extraction port is inserted into the drip hole, and the ball head plug rod is arranged in the elastic tube.

[0018] Optionally, the extraction mechanism further comprises a driving assembly configured to drive the ball head plug rod to reciprocally slide, the driving assembly comprises a driving rod connected with the ball head plug rod and exposed outside through the elastic tube, a driving wheel configured to drive the driving rod to intermittently slide, and a driving motor configured to drive the driving wheel to rotate, and the driving motor is arranged on the barrel cover.

[0019] Optionally, a cam groove is arranged on the side of the driving wheel close to the driving rod, and a plug post is arranged on the side of the driving rod close to the driving wheel and inserted into the cam groove.

[0020] A drainage slope is arranged on the driving rod to prevent the extraction liquid from being accumulated on the top of the driving rod.

[0021] Optionally, the coffee cold brewing machine further comprises a stirring vane assembly arranged in the collecting cavity to stir the extraction liquid, the stirring vane assembly comprises an annular support, a stirring vane, and a sliding column, the sliding column is arranged in the annular support, the sliding column is connected with the ball head plug rod and slides synchronously, one side of the stirring vane is hingedly connected to the sliding column, and the other side of the stirring vane is hingedly connected to the annular support, and a waist-shaped hinge hole is arranged on the side of the stirring vane hingedly connected to the annular support.

[0022] Optionally, a connecting rod is rotatably arranged on the side of the sliding column close to the ball head plug rod, and the side of the connecting rod away from the sliding column is threadedly arranged on the ball head plug rod.

[0023] The stirring vane is spaced apart along the vertical direction and the circumferential direction of the annular support.

[0024] To sum up, the present application includes at least one of the following beneficial technical effects:

[0025] 1. When cold brewing coffee, the spraying mechanism injects cold water into the extraction barrel continuously or intermittently. The cold water will gradually seep into the collecting chamber. Then the driving motor drives the ball head plug rod to slide intermittently, so that the extraction port can be intermittently opened. At this time, the water in the collecting chamber will be intermittently discharged and flow into the collection barrel to obtain the finished product. Compared with the traditional cold brewing method, the above structure takes less time and has higher efficiency when cold brewing coffee. In addition, the extraction port is intermittently opened by the ball head plug rod. During the time when the extraction port is not opened, the coffee powder is always soaked in cold water, and the cold brewing effect is better;

[0026] 2. When the bottom of the spraying barrel abuts against the coffee powder, the water tank continues to move downward. At this time, the plug column will be inserted into the partition sleeve, so that the coffee powder is not easy to enter the partition sleeve to block the water outlet channel. After the plug column is inserted into the partition sleeve, the plane at the bottom of the spraying barrel remains flush, which facilitates the pressing and compacting of the coffee powder in the extraction chamber. After the coffee powder is compacted, the driving member drives the water tank to move upward, and the plug column also slides to block the water outlet channel. At this time, the bottom of the spraying barrel still abuts against the coffee powder. When the top of the water tank abuts against the limiting ring, the spraying barrel will also start to rise. Then the cold water in the water tank flows into the collecting chamber and flows out through the water outlet channel. The spraying barrel not only can spray water but also can press and flatten the coffee powder;

[0027] 3. The water outlet channels on the opposite two side walls of the partition sleeve are symmetrically arranged. When the cold water flows out of the water outlet channels, the water flows from the opposite two water outlet channels will collide to reduce the impact force of the water flow, so that the water flow is not easy to wash out the compacted coffee powder from the recess or scatter the coffee powder to the inner wall of the extraction barrel;

[0028] 4. After the driving motor rotates, it will drive the driving wheel to rotate. When the convex portion of the cam groove rotates to the position of the insertion column, the ball head plug rod moves upward to open the extraction port. Then, with the rotation of the driving wheel, the ball head plug rod moves downward to block the extraction port. This cycle repeats, and people can change the rotation speed of the driving motor according to the needs to adjust the interval length of the opening of the extraction port, thereby controlling the extraction time;

[0029] 5. As the extraction time increases, the coffee concentration extracted later is lower. When the ball head plug rod moves upward to open the extraction port, the ball head plug rod will drive the sliding column to move upward. When the sliding column moves upward, it will drive the stirring vane to stir the extraction liquid upward from the bottom of the collection barrel, so that the extraction liquid with higher concentration at the bottom and the extraction liquid with lower concentration later can be uniformly mixed, thereby making the coffee concentration in the entire collection barrel more uniform and the taste consistent. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the overall structure schematic diagram of the coffee cold extraction machine in the embodiment of the present application.

[0031] Figure 2 is the perspective sectional view of the coffee cold extraction machine in the embodiment of the present application.

[0032] Figure 3 is the structure diagram of the rack in the embodiment of the present application.

[0033] Figure 4 is the sectional view of the extraction mechanism and the collection mechanism in the embodiment of the present application.

[0034] Figure 5 is the explosion diagram of the driving assembly in the embodiment of the present application.

[0035] Figure 6 is the explosion diagram of the poking vane assembly in the embodiment of the present application.

[0036] Figure 7 is the explosion diagram of the spraying mechanism in the embodiment of the present application.

[0037] Figure 8 is the perspective sectional view of the spraying mechanism in the embodiment of the present application.

[0038] Figure 9 is the enlarged view of A part in the embodiment of the present application. Figure 8

[0039] BRIEF DESCRIPTION OF THE DRAWINGS: 1, rack; 11, base; 12, stand; 121, sliding groove; 13, support ring plate; 14, driving piece; 2, extraction mechanism; 21, extraction barrel; 211, extraction cavity; 212, conical liquid collecting cavity; 213, extraction port; 22, ball head plug rod; 221, ball; 222, rod body; 23, filter plate; 24, driving assembly; 241, driving rod; 2411, drainage inclined surface; 2412, plug-in column; 242, driving wheel; 2421, cam groove; 243, driving motor; 25, annular convex edge; 3, spraying mechanism; 31, water containing barrel; 311, water containing cavity; 312, water outlet; 313, plug column; 32, spraying barrel; 321, containing cavity; 322, water spraying port; 323, partition sleeve; 324, water collecting cavity; 325, water outlet passage; 33, sliding rod; 34, top cover; 35, water pipe; 36, limiting ring; 4, collection mechanism; 41, collection barrel; 411, collection cavity; 42, barrel cover; 43, telescopic bellows; 5, poking vane assembly; 51, annular support; 52, poking piece; 521, waist type hinged hole; 53, sliding column; 54, connecting rod. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings Figures 1-9 The present application is further described in detail. ​

[0041] The application discloses a coffee cold extraction machine.

[0042] Referring to Figure 1 With Figure 2 , the coffee cold extraction machine comprises a rack 1, an extraction mechanism 2, a spraying mechanism 3, a collecting mechanism 4 and a stirring vane assembly 5. The extraction mechanism 2 is installed on the rack 1 for containing coffee powder and extracting the coffee powder. The spraying mechanism 3 is located above the extraction mechanism 2 and sprays cold water into the extraction mechanism 2, wherein the spraying mechanism 3 is slidingly installed on the rack 1, so that the spraying mechanism 3 can compact the coffee powder in the extraction mechanism 2. The collecting mechanism 4 is located below the extraction mechanism 2 for collecting the extracted liquid in the extraction mechanism 2. The stirring vane assembly 5 is installed in the collecting mechanism 4 for stirring the collected extracted liquid. The coffee concentration is high at the beginning of extraction, gradually decreases in the later extraction, and the stirring vane assembly 5 can make the extracted liquid in the collecting mechanism 4 more uniform.

[0043] Referring to Figure 2 With Figure 3 , the rack 1 comprises a base 11, a column 12 and a support ring plate 13. The column 12 is welded to the top of the base 11, and the support ring plate 13 is welded to the side wall of the column 12 in a cantilevered manner.

[0044] Referring to Figure 1 With Figure 4 , the extraction mechanism 2 comprises an extraction barrel 21, a ball head plug rod 22, a filter plate 23 and a driving assembly 24. The bottom of the extraction barrel 21 is integrally formed with an annular protrusion 25, and the outer diameter of the annular protrusion 25 is smaller than the outer diameter of the bottom of the extraction barrel 21. The bottom of the extraction barrel 21 is placed on the support ring plate 13, and the annular protrusion 25 is inserted into the support ring plate 13, so that the horizontal movement of the extraction barrel 21 is limited, and the extraction barrel 21 can be positioned and installed, thereby improving the precision of the cooperation between the spraying mechanism 3, the collecting mechanism 4 and the extraction barrel 21. The top of the extraction barrel 21 is provided with an extraction cavity 211 for placing coffee powder, and the cavity bottom of the extraction cavity 211 is provided with a tapered liquid collecting cavity 212, and the size of the tapered liquid collecting cavity 212 gradually decreases along the opening direction. The filter plate 23 is placed on the cavity bottom of the extraction cavity 211 to separate the extraction cavity 211 and the tapered liquid collecting cavity 212, so that the coffee powder is not easy to fall into the tapered liquid collecting cavity 212; at the same time, the filter plate 23 can filter the extracted liquid entering the tapered liquid collecting cavity 212. The cavity bottom of the tapered liquid collecting cavity 212 is provided with an extraction port 213, the extraction port 213 penetrates the extraction barrel 21, and the ball head plug rod 22 is slidingly inserted into the extraction port 213 to shield or open the extraction port 213. The driving assembly 24 is installed on the collecting mechanism 4 to drive the ball head plug rod 22 to slide intermittently, so that the extraction port 213 is intermittently opened, so as to discharge the extracted liquid and make the extracted liquid drop into the collecting mechanism 4.

[0045] Referring to Figure 4With Figure 5 The ball head plug rod 22 comprises a ball 221 and a rod body 222. The ball 221 is located at one end of the rod body 222, and the ball 221 is integrally formed with the rod body 222. The diameter of the ball 221 is greater than the diameter of the extraction port 213, and the diameter of the rod body 222 is less than the diameter of the extraction port 213. The ball 221 is located in the conical liquid collecting cavity 212, and the rod body 222 is exposed to the outside through the extraction port 213. Under the action of natural gravity, the ball 221 will shield the extraction port 213, making it difficult for the extraction liquid to leak out.

[0046] The drive assembly 24 comprises a drive rod 241, a drive wheel 242 and a drive motor 243. One end of the drive rod 241 penetrates the rod body 222 along a direction perpendicular to the sliding direction of the ball head plug rod 22, and the drive rod 241 is in interference fit with the rod body 222 after penetrating the rod body 222. The drive wheel 242 is installed on the motor shaft of the drive motor 243, the drive motor 243 drives the drive wheel 242 to rotate, the drive rod 241 intermittently slides under the action of the drive wheel 242, and then the ball head plug rod 22 intermittently slides. The drive motor 243 is installed on the collection mechanism 4.

[0047] The side of the drive rod 241 close to the extraction port 213 is provided with a drainage inclined surface 2411, which is inclined away from the extraction port 213, so that the extraction liquid drops are not easily accumulated on the drive rod 241. Both ends of the drive rod 241 are integrally formed with a plug-in column 2412, so the drive wheel 242 and the drive motor 243 are also provided with two, and the following will be described by taking one drive wheel 242 and drive motor 243 and the matching relationship of the drive rod 241 as an example.

[0048] Referring to Figure 4 With Figure 5 The drive wheel 242 is located at the side of the drive rod 241 where the plug-in column 2412 is arranged, and the side of the drive wheel 242 close to the plug-in column 2412 is provided with a cam groove 2421. The plug-in column 2412 is inserted into the cam groove 2421, and then with the rotation of the drive wheel 242, the plug-in column 2412 will move under the guidance of the cam groove 2421 and will drive the drive rod 241 to move upward when the protruding part in the cam groove 2421 moves to the position of the plug-in column 2412, and then the ball head plug rod 22 will move upward to open the extraction port 213.

[0049] Referring to Figure 1 With Figure 4 The collection mechanism 4 comprises a collection barrel 41 and a barrel cover 42. The collection barrel 41 is placed on the base 11, and the collection barrel 41 is located below the extraction barrel 21. The top of the collection barrel 41 is provided with a collection cavity 411 for storing the extracted coffee, and the barrel cover 42 is arranged at the cavity opening of the collection cavity 411 to shield the collection cavity 411. The drive motor 243 is installed on the barrel cover 42 by bolts.

[0050] Referring to Figure 4 With Figure 5 , the bucket cover 42 is provided with a drip hole for connecting the extraction port 213 and the collection cavity 411, the telescopic bellows 43 is installed at the extraction port 213, the telescopic bellows 43 is inserted into the drip hole away from the extraction port 213, the rod body 222 is located in the telescopic bellows 43, and the driving rod 241 passes through the telescopic bellows 43, and both ends of the driving rod 241 are located outside the telescopic bellows 43.

[0051] Referring to Figure 4 With Figure 6 , the stirring vane assembly 5 is placed in the collection cavity 411, and the stirring vane assembly 5 comprises an annular support 51, a stirring vane 52 and a sliding column 53. The sliding column 53 is located in the middle of the annular support 51, the sliding column 53 is connected with the ball plug rod 22, and the sliding column 53 slides synchronously with the ball plug rod 22. The stirring vane 52 is located between the sliding column 53 and the annular support 51, one side of the stirring vane 52 is hinged to the sliding column 53 through a rotating shaft, and the other side is hinged to the annular support 51 through a rotating shaft. When the ball plug rod 22 slides, the sliding column 53 also slides, thereby making the stirring vane 52 stir the extraction liquid in the collection cavity 411.

[0052] Among them, the side of the stirring vane 52 hinged to the annular support 51 is provided with a waist-shaped hinge hole 521, the extension direction of the waist-shaped hinge hole 521 is the direction of the stirring vane 52 from the annular support 51 to the sliding column 53, and when the sliding column 53 slides, the rotating shaft inserted into the waist-shaped hinge hole 521 has a moving space, so that the entire annular support 51 is not easy to move together with the stirring vane 52.

[0053] Referring to Figure 4 With Figure 6 , a plurality of stirring vanes 52 are arranged along the sliding direction of the sliding column 53, thereby when the sliding column 53 slides, the plurality of stirring vanes 52 can stir the extraction liquid at different height positions. At the same time, a plurality of stirring vanes 52 are arranged along the circumferential direction of the annular support 51, thereby further stirring and agitating the extraction liquid at different positions in the collection cavity 411.

[0054] The side of the sliding column 53 close to the ball plug rod 22 is rotatably installed with a connecting rod 54, the connecting rod 54 is limited on the sliding column 53 along the sliding direction of the sliding column 53, thereby the connecting rod 54 can rotate in the circumferential direction on the sliding column 53 and is not easy to move in the axial direction. The side of the connecting rod 54 close to the ball plug rod 22 is provided with a threaded groove, the side of the rod body 222 away from the ball 221 is provided with a threaded section, and the threaded end on the rod body 222 is threadedly installed in the threaded groove, thereby connecting the sliding column 53 and the ball plug rod 22 together.

[0055] Referring to Figure 2 With Figure 7The spraying mechanism 3 comprises a water containing barrel 31, a spraying barrel 32 and a sliding rod 33. The water containing barrel 31 contains cold water, the spraying barrel 32 is sleeved on the water containing barrel 31 and is used for uniformly spraying the cold water in the water containing barrel 31 on the coffee powder in the extraction barrel 21. One side of the sliding rod 33 is connected with the water containing barrel 31, and the other side is slidingly installed on the stand column 12. The spraying barrel 32 will slide synchronously with the water containing barrel 31.

[0056] In combination Figure 2 With reference to Figure 7 With Figure 8 The top of the water containing barrel 31 is provided with a water containing cavity 311, and a top cover 34 for shielding the cavity mouth of the water containing cavity 311 is fixed on the cavity mouth by bolts. The sliding rod 33 is welded on the top of the top cover 34, and the other side of the sliding rod 33 extends towards the stand column 12. The side of the stand column 12 close to the sliding rod 33 is provided with a sliding groove 121 penetrating through the stand column 12, and the sliding rod 33 is inserted into the sliding groove 121. The top of the stand column 12 is provided with a driving member 14 for driving the sliding rod 33 to slide in the sliding groove 121. In this embodiment, the driving member 14 is preferably a lead screw motor, the lead screw in the driving member 14 is located in the sliding groove 121, and the part of the sliding rod 33 located in the sliding groove 121 is threadedly connected with the lead screw in the driving member 14. The sliding rod 33 is limited in the sliding groove 121 and is not easy to rotate, and then the sliding rod 33 drives the water containing barrel 31 to slide along the vertical direction under the driving of the driving member 14.

[0057] The top cover 34 is provided with a water pipe 35 hole penetrating through the top cover 34, and the water pipe 35 is inserted into the water pipe 35 hole. The cold water can enter into the water containing cavity 311 through the water pipe 35.

[0058] With reference to Figure 7 With Figure 8 The bottom of the water containing cavity 311 is provided with a water outlet 312 penetrating through the water containing barrel 31, and the cold water in the water containing cavity 311 can enter into the spraying barrel 32 through the water outlet 312. The top of the spraying barrel 32 is provided with a containing cavity 321, the water containing barrel 31 is inserted into the containing cavity 321 and does not protrude out of the containing cavity 321, and the outer peripheral wall of the water containing barrel 31 abuts against the cavity wall of the containing cavity 321, so that the spraying barrel 32 can slide on the water containing barrel 31. The top of the spraying barrel 32 is provided with a limiting ring 36 installed by bolts, the inner diameter of the limiting ring 36 is smaller than the outer diameter of the water containing barrel 31, so that the water containing barrel 31 is limited in the containing cavity 321.

[0059] In combination Figure 7 With reference to Figure 8 With Figure 9The bottom of the accommodating cavity 321 is provided with a water outlet 312, and the bottom of the accommodating cavity 321 is integrally formed with a partition sleeve 323. The partition sleeve 323 is located at the water outlet 322, and the inside of the partition sleeve 323 communicates with the water outlet 322. Due to the presence of the partition sleeve 323, the bottom of the accommodating cavity 321 is spaced apart from the bottom of the water tank 31 by a certain gap, and the gap between the bottom of the accommodating cavity 321 and the bottom of the water tank 31 is set as a water collecting cavity 324. The water collecting cavity 324 communicates with the water outlet 312, so that the cold water in the water tank 311 can enter the water collecting cavity 324 through the water outlet 312. The outer wall of the partition sleeve 323 is provided with an inclined water outlet channel 325. The water outlet channel 325 is inclined to the direction close to the extraction barrel 21 along the direction from the outer wall of the partition sleeve 323 to the inside of the partition sleeve 323. The water outlet channel 325 penetrates the wall thickness of the partition sleeve 323, so that the cold water in the water collecting cavity 324 can flow into the inside of the partition sleeve 323 through the water outlet channel 325 and enter the extraction barrel 21 through the water outlet 322. The water outlet channel 325 is uniformly and circumferentially spaced apart on the partition sleeve 323. The water outlet channels 325 on the opposite sides of the partition sleeve 323 are symmetrically arranged, so that the water flows out of the opposite water outlet channels 325 collide to reduce the impact force of the water flow, so that the water flow is not easy to wash out the coffee powder in the pits or scatter the coffee powder on the inner wall of the extraction barrel 21.

[0060] In combination Figure 7 With reference to Figure 8 With Figure 9 The bottom of the water tank 31 is integrally formed with a plug column 313 which is inserted into the partition sleeve 323 to shield or open the water outlet channel 325. When water needs to be sprayed, the spray barrel 32 slides under the action of gravity, the bottom of the limiting ring 36 abuts against the top of the water tank 31, the plug column 313 is partially located in the partition sleeve 323 and partially located in the water collecting cavity 324, the part of the plug column 313 located in the partition sleeve 323 does not shield the water outlet channel 325, and the cold water is sprayed out through the water outlet channel 325. When the coffee powder is compacted, the drive member 14 drives the water tank 31 and the spray barrel 32 to move downward, the spray barrel 32 is pressed to move upward after contacting the coffee powder, the plug column 313 is inserted into the partition sleeve 323 to shield the water outlet channel 325, the side of the plug column 313 close to the extraction barrel 21 is flush with the bottom of the spray barrel 32, and the side of the partition sleeve 323 close to the water tank 31 abuts against the bottom of the water tank 31.

[0061] The implementation principle of the coffee cold extraction machine in the embodiment of the application is as follows: when the coffee is cold extracted, the extraction barrel 21 is first placed on the support ring plate 13, then the coffee powder is poured into the extraction cavity 211, the driving member 14 drives the spraying mechanism 3 to move towards the extraction barrel 21, when the bottom of the spraying barrel 32 abuts against the coffee powder, the water containing barrel 31 continues to move downwards, at this time, the plug post 313 is inserted into the partition sleeve 323, so that the coffee powder is not easy to enter into the partition sleeve 323 to block the water outlet channel 325, and after the plug post 313 is inserted into the partition sleeve 323, the bottom plane of the spraying barrel 32 remains flush, so as to facilitate the pressing and compacting of the coffee powder in the extraction cavity 211, then the driving member 14 drives the spraying barrel 32 and the water containing barrel 31 to rise, at this time, the bottom of the limiting ring 36 abuts against the top of the water containing barrel 31, the plug post 313 is partially located in the partition sleeve 323 and partially located in the water collecting cavity 324, and the part of the plug post 313 located in the partition sleeve 323 does not shield the water outlet channel 325. Cold water enters into the water containing cavity 311 from the water pipe 35, then flows into the water collecting cavity 324 through the water outlet 312, and then, due to the fact that the plug post 313 blocks the opening of the partition sleeve 323 close to the water containing barrel 31, the cold water is sprayed into the extraction barrel 21 from the water outlet channel 325.

[0062] The driving motor 243 rotates, the ball head plug rod 22 intermittently slides under the cooperation of the cam groove 2421 and the driving rod 241, and then the extraction port 213 is intermittently opened. When the ball head plug rod 22 moves upwards to open the extraction port 213, the ball head plug rod 22 drives the sliding post 53 to move upwards, and when the sliding post 53 moves upwards, the sliding post 53 drives the stirring blade to stir the extraction liquid upwards from the bottom of the collection barrel 41, so that the extraction liquid with high concentration at the bottom and the extraction liquid with low concentration behind can be uniformly mixed.

[0063] It is worth noting that the user can add the content of coffee powder according to actual needs, the driving member 14 can control the moving distance of the spraying barrel 32 and the water containing barrel 31 to realize the compacting of coffee powder with different heights. In addition, the user can also select to control the driving motor 243 to operate to make the ball head plug rod 22 slide after the extraction barrel 21 is filled with water, so as to intermittently open the extraction port 213, or can select to control the driving motor 243 to rotate at the same time when the spraying mechanism 3 adds water into the extraction barrel 21, and then the cold water in the water collecting cavity 324 can flow out from the extraction port 213. Finally, the user can also adjust the time length of the intermittent opening of the extraction port 213 by the ball head plug rod 22 by controlling the rotating speed of the motor.

[0064] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A coffee cold brew machine, characterized in that, The utility model relates to a coffee machine, including: A rack (1) including a base (11), a column (12) arranged on the top of the base (11) and a support ring plate (13) fixedly arranged on the column (12); An extraction mechanism (2) including an extraction barrel (21) for containing coffee powder and a ball head plug rod (22) slidingly installed on the extraction barrel (21), the extraction barrel (21) is placed on the support ring plate (13), the top of the extraction barrel (21) is provided with an extraction cavity (211) for placing coffee powder, the bottom of the extraction cavity (211) is provided with a tapered liquid collecting cavity (212), the bottom of the tapered liquid collecting cavity (212) is provided with an extraction port (213) for the outflow of extraction liquid, the bottom of the extraction cavity (211) is provided with a filter plate (23) separating the extraction cavity (211) and the tapered liquid collecting cavity (212), the ball head plug rod (22) is slidingly arranged at the extraction port (213) to shield or open the extraction port (213), the ball head plug rod (22) is intermittently reciprocatingly slid on the extraction barrel (21) so that the extraction port (213) is opened after being intermittently closed for a certain time; A spraying mechanism (3) located above the extraction barrel (21) and spraying cold water into the extraction cavity (211), the spraying mechanism (3) is slidingly installed on the column (12), the column (12) is provided with a driving member (14) driving the spraying mechanism (3) to slide in the vertical direction to compact the coffee powder in the extraction cavity (211); A collection mechanism (4) including a collection barrel (41) located below the extraction barrel (21), the top of the collection barrel (41) is provided with a collection cavity (411) in communication with the extraction port (213) for collecting extraction liquid; The spraying mechanism (3) includes a water containing barrel (31) and a spraying barrel (32), the top of the water containing barrel (31) is provided with a water containing cavity (311), the bottom of the water containing cavity (311) is provided with a water outlet (312) penetrating through the water containing barrel (31), the top of the spraying barrel (32) is provided with a containing cavity (321), the water containing barrel (31) is located in the containing cavity (321), and the spraying barrel (32) is slidingly sleeved on the water containing barrel (31), the bottom of the spraying barrel (32) is provided with a water spraying port (322) in communication with the water outlet (312) to uniformly spray cold water out. The top of the spray barrel (32) is detachably provided with a limiting ring (36), the bottom of the limiting ring (36) abuts against the top of the water storage barrel (31), the bottom of the containing cavity (321) is provided with a partition sleeve (323), the partition sleeve (323) is located at the water spraying opening (322) and communicates with the water spraying opening (322), the water storage barrel (31) and the bottom of the containing cavity (321) are spaced apart by a water collecting cavity (324), the water collecting cavity (324) communicates with the water outlet (312), and the outer wall of the partition sleeve (323) is provided with a water outlet channel (325) for communicating the water collecting cavity (324) with the inside of the partition sleeve (323). The water outlet channel (325) is gradually inclined towards the extraction barrel (21) along the opening direction, a plurality of water outlet channels (325) are uniformly and circumferentially arranged on the partition sleeve (323), and the water outlet channels (325) on the opposite sides of the partition sleeve (323) are symmetrically arranged. The bottom of the water storage barrel (31) is provided with a plug column (313) inserted into the partition sleeve (323) to shield or open the water outlet channel (325). When the bottom of the limiting ring (36) abuts against the top of the water storage barrel (31), the plug column (313) is partially located in the partition sleeve (323) and partially located in the water collecting cavity (324), and the part of the plug column (313) located in the partition sleeve (323) does not shield the water outlet channel (325). When the coffee powder is compacted, the spray barrel (32) is pressed upward, the plug column (313) is inserted into the partition sleeve (323) to shield the water outlet channel (325), the side of the plug column (313) close to the extraction barrel (21) is flush with the bottom of the spray barrel (32), and the side of the partition sleeve (323) close to the water storage barrel (31) abuts against the bottom of the water storage barrel (31).

2. The coffee cold brew machine of claim 1, wherein: The collection mechanism (4) further comprises a barrel cover (42) covering the collection barrel (41) to shield the collection cavity (411), the barrel cover (42) is provided with a drip hole for communicating the extraction opening (213) with the collection cavity (411), the extraction opening (213) is provided with an elastic bellows (43), one side of the elastic bellows (43) away from the extraction opening (213) is inserted into the drip hole, and the ball head plug rod (22) is located in the elastic bellows (43).

3. A coffee cold brew machine according to claim 2, characterized in that: The extraction mechanism (2) further comprises a driving assembly (24) for driving the ball head plug rod (22) to reciprocatingly slide, the driving assembly (24) comprises a driving rod (241) connected with the ball head plug rod (22) and exposed outside through the telescopic bellows (43), a driving wheel (242) for driving the driving rod (241) to intermittently slide, and a driving motor (243) for driving the driving wheel (242) to rotate, the driving motor (243) is installed on the barrel cover (42).

4. A coffee cold brew machine according to claim 3, characterized in that: The driving wheel (242) is provided with a cam groove (2421) on one side close to the driving rod (241), and the driving rod (241) is provided with a plug-in column (2412) inserted into the cam groove (2421) on one side close to the driving wheel (242). The driving rod (241) is provided with a drainage inclined surface (2411) for preventing the extraction liquid from being accumulated on the top of the driving rod (241).

5. The coffee cold brew machine of claim 3, wherein: Further comprising a stirring vane assembly (5) placed in the collecting cavity (411) for stirring the extraction liquid, the stirring vane assembly (5) comprises an annular support (51), a stirring vane (52), and a sliding column (53), the sliding column (53) is located inside the annular support (51), the sliding column (53) is connected with the ball head plug rod (22) and slides synchronously, one side of the stirring vane (52) is hinged to the sliding column (53), and the other side is hinged to the annular support (51), a waist-shaped hinged hole (521) is formed in one side of the stirring vane (52) hinged to the annular support (51).

6. A coffee cold brew machine according to claim 5, characterized in that: The sliding column (53) is rotatably installed with a connecting rod (54) on one side close to the ball head plug rod (22), and one side of the connecting rod (54) away from the sliding column (53) is screwedly installed on the ball head plug rod (22). The stirring vane (52) is spaced apart along the vertical direction and the circumferential direction of the annular support (51).

Images