A circulating air cooling temperature control device for tea leaf extraction process

Abstract

The application relates to a circulating air cooling temperature control device for a tea leaf extraction process and relates to the technical field of tea leaf processing, which comprises a device main body, a refrigeration circulation system, a temperature control chamber and an air flow circulation loop are arranged in the device main body, and a cold air distribution mechanism is arranged through a partition plate above the temperature control chamber; the cold air distribution mechanism comprises a carrier plate driven to lift by a screw rod and a guide rod, a dynamic sweeping structure is fixed below the carrier plate, the dynamic sweeping structure drives a movable air duct component to reciprocatingly fan sweep, the movable air duct component is linked with a guide flow component through a worm and a long and short supporting rod to make the guide flow component reciprocatingly stretch and shrink in the radial direction, and the guide flow component is driven by a gear and a rack to synchronously swing a plurality of blades inside the guide flow component to dynamically deflect the wind direction and can be completely closed. The application realizes the continuous sweeping of the cold air on the surface of an extraction container through multi-dimensional transmission, eliminates the cooling dead zone and temperature stratification, cooperates with a temperature sensor closed loop control, and significantly improves the temperature control uniformity, working condition adaptability and temperature control precision.

Description

Technical Field

[0001] This application relates to the technical field of tea processing, and in particular to a circulating air-cooled temperature control device for the tea extraction process. Background Technology

[0002] In the deep processing of tea and the preparation of high-quality tea beverages, the extraction process has strict requirements for temperature precision. If the extraction temperature is too high, it will easily lead to excessive oxidation of tea polyphenols and loss of aromatic substances, resulting in a bitter taste and weak aroma in the tea soup. If the temperature is too low, the effective components will not dissolve sufficiently, and the tea soup will have a thin taste. Therefore, it is usually necessary to use cooling equipment to implement precise temperature control of the extraction container throughout the process. Among them, the circulating air cooling method is widely used because of its simple structure and the gentle contact between the cooling medium and the extraction container.

[0003] Currently, Chinese patent publication number CN222165430U discloses a cooling device for a supercritical extraction process. This device includes a cooling pool, a feeding pipe, an air-cooling device, and a water-cooling device. The feeding pipe is evenly distributed in the cooling pool in a double-layer configuration for multi-stage cooling. The air-cooling device is located above the cooling pool to perform primary cooling on the upper layer of the feeding pipe, while the water-cooling device is located on the side of the cooling pool to perform secondary cooling on the lower layer of the feeding pipe and to achieve a refrigeration cycle. The inlet of the feeding pipe is located in the upper layer, and the outlet is located in the lower layer. This scheme achieves stepped cooling by combining air cooling and water cooling. Air cooling is used to pre-cool the material and the feeding pipe, followed by rapid cooling with water cooling. This aims to avoid damage to the material or the feeding pipe due to sudden temperature changes, while improving cooling efficiency and uniformity.

[0004] However, the existing air-cooling technology uses a fixed-installation fan, with the air outlet position and blowing direction remaining constant. The area covered by the cold air is relatively fixed. When applied to statically placed extraction containers, temperature differences can easily occur between different parts, affecting the uniformity of the temperature field distribution. At the same time, it lacks an adaptive adjustment function for extraction containers of different sizes, and the blowing range of the air-cooling component is not easy to dynamically adjust. This makes it difficult to actively match and respond to changes when container sizes are changed or local temperature differences occur in the chamber. There is still room for improvement in terms of further enhancing temperature control uniformity and adaptability to operating conditions. Summary of the Invention

[0005] The purpose of this application is to provide a circulating air-cooled temperature control device for the tea extraction process, in order to solve the problems in the background art.

[0006] This application provides a circulating air-cooled temperature control device for tea extraction process, which adopts the following technical solution: it includes a main body of the device, a refrigeration circulation system for generating cold energy is provided on one side of the main body of the device, and a temperature control chamber for accommodating the tea extraction container is provided on the other side of the main body of the device. The main body of the device is hinged to a door on the front side of the temperature control chamber. A cold air outlet is provided on the side of the refrigeration circulation system near the temperature control chamber, and a circulating air duct is provided below the cold air outlet. A partition is embedded and fixed on the upper part of the temperature control chamber. An airflow circulation loop is formed between the refrigeration circulation system, the temperature control chamber, the cold air outlet and the circulating air duct. A cold air distribution mechanism is installed inside the partition. The cold air distribution mechanism includes a rectangular carrier plate. Two threaded sleeves are installed through the two diagonally opposite sides of the carrier plate. Each of the two threaded sleeves is threaded with a screw. The top of each screw is connected to the bottom output end of a first motor. Both first motors are locked and fixed to the top side of the partition plate. A guide rod is slidably installed through the two diagonally opposite sides of the carrier plate. The top of each guide rod is fixed to the partition plate. A dynamic sweeping structure is locked and fixed to the bottom center of the carrier plate. The four sides of the dynamic sweeping structure are connected to the cold air outlet through a flexible hose.

[0007] By adopting the above technical solution, the carrier plate is driven to move vertically up and down along the guide rod by screw transmission, which drives the dynamic sweeping structure to move up and down in the temperature control chamber, thereby achieving a comprehensive sweeping of different height areas of the tea extraction container.

[0008] Preferably, the temperature control chamber has a support for detachably fixing the tea extraction container on the bottom side of the interior, the support having a hollow structure to allow cold air to circulate; the inner wall of the temperature control chamber is provided with a heat insulation layer, and at least one temperature sensor is provided on the heat insulation layer for detecting the temperature of the temperature control chamber and the tea extraction container.

[0009] By adopting the above technical solution, the hollow structure of the bracket ensures that the cold air can return smoothly through the bottom of the container after being blown out, forming a complete airflow circulation path, while the temperature sensor provides a receiving end for real-time temperature feedback for subsequent dynamic control.

[0010] Preferably, the refrigeration cycle system includes a compressor, a condenser, an expansion valve, and an evaporator connected in a closed loop in sequence; a circulating fan is provided in the circulating air duct to drive airflow through the evaporator of the refrigeration cycle system to exchange heat and form circulating cold air, and to send the circulating cold air into the temperature control chamber to cool the tea extraction container.

[0011] By adopting the above technical solution, the circulating fan drives the airflow to repeatedly flow through the evaporator for heat exchange, forming a closed cold air circulation loop, which not only ensures the continuous supply of cooling capacity, but also avoids the interference of outside air on the temperature control environment.

[0012] Preferably, the circulating fan is covered by a casing, and an air filter is provided on the side of the casing near the temperature control chamber.

[0013] By adopting the above technical solution, the air filter filters the circulating airflow to prevent the circulating air from carrying impurities or odors that could contaminate the tea extraction environment, thus ensuring the cleanliness of the extraction process.

[0014] Preferably, the dynamic sweeping structure includes a positioning plate fixed to the top of a carrier plate, a support locked to the bottom of the positioning plate, a second motor locked to the rear bottom of the support, a turntable connected to the front output end of the second motor, and the turntable rotating through the middle of the bottom of the support. A V-shaped piece is provided on the inner side of the circular part of the turntable, and a groove is opened inside one side of the V-shaped piece. A slider is slidably connected inside the groove. A convex rod is connected to the front inside the slider. The front of the convex rod is open, and cross rods are rotatably inserted through the left and right sides of the opening. The top of the cross rod is inserted into the front of the support. A base is integrally formed at the bottom of the cross rod. A movable air duct component is locked to the bottom of the base. The four sides of the movable air duct component are connected to a cold air outlet through a flexible hose.

[0015] By adopting the above technical solution, the rotation of the turntable driven by the second motor becomes the reciprocating sliding of the slider, and then the cross rod is pushed and pulled by the convex rod to swing back and forth around the top fulcrum, so that the movable air duct component generates a fan sweeping motion, dynamically changing the air outlet direction in the horizontal direction and eliminating the cooling dead zone of blowing air in one direction.

[0016] Preferably, the rear end of the convex rod is spherical, and a hemispherical groove is provided on the front side inside the slider, and the spherical part of the convex rod is inserted into and rotates inside the hemispherical groove.

[0017] By adopting the above technical solution, the ball joint between the ball head and the hemispherical groove enables the convex rod to deflect adaptively during the pushing and pulling process, compensating for motion interference in the transmission chain and ensuring smooth and stable reciprocating oscillating motion.

[0018] Preferably, the movable air duct component includes a shroud that is fastened to the base at the top. A third motor is locked and fixed inside the top side of the shroud. A worm gear is connected to the front output end of the third motor. A worm wheel is engaged with the side of the worm gear. A support column is fixed through the middle of the worm wheel. The top of the support column is inserted and rotates in the middle of the shroud, and the bottom of the support column is fixed to the chassis. The top middle of the chassis is rotatably connected to the shroud. Four long support rods are rotatably distributed in a cross shape on the outer side of the top of the chassis. A short support rod is rotatably connected to the top of each of the four long support rods. The side of each of the four short support rods away from the long support rods is rotatably connected to the shroud. A flow guide assembly is fastened to the bottom of the side of each of the four long support rods away from the short support rods. A connector is provided on the outer side of each of the four flow guide assemblies. The connector is connected to the cold air outlet through a flexible hose.

[0019] By adopting the above technical solution, the third motor drives the chassis to rotate via a worm gear, which in turn drives the four sets of long and short support rods to move in tandem, so that the four flow guiding components can extend and retract synchronously in the radial direction, thereby flexibly adjusting the distance between the air outlet and the extraction container to adapt to containers of different capacities.

[0020] Preferably, the long support rod and the short support rod are connected by a pivot, and the long support rod is divided into a long side and a short side by the pivot, with the short side located below the short support rod.

[0021] By adopting the above technical solution, the long support rod uses the long side and the short side to form a lever structure. Under the constraint of the short support rod, the rotational motion of the chassis is converted into radial reciprocating displacement at the end of the long side, so as to obtain sufficient radial extension and retraction of the flow guide component with a small driving stroke.

[0022] Preferably, the flow guiding assembly includes a shroud that is fastened to a long support rod on its top side. A rectangular channel is provided on the inner side wall of the shroud. A fourth motor is locked and fixed inside the upper side of the shroud. A drive gear is connected to the right output end of the fourth motor. A rack is meshed and driven on the rear side of the drive gear. The rack is located inside the shroud and is slidably connected to it longitudinally. At least ten driven gears are meshed and driven sequentially from top to bottom on the front side of the rack. Each driven gear has a blade coaxially fixed in the middle.

[0023] By adopting the above technical solution, the fourth motor drives a row of blades to swing back and forth synchronously via a gear and rack, continuously sweeping and deflecting the airflow direction of the rectangular channel, so that the cold air forms a dynamically changing blowing angle on the surface of the tea extraction container, further improving the temperature uniformity of the local area.

[0024] Preferably, no fewer than ten blades are disposed through the inner side of the rectangular channel, and when all blades are upright, the blades distributed from top to bottom contact each other in sequence, forming a closed state inside the rectangular channel.

[0025] By adopting the above technical solution, the blades can completely close the rectangular channel at the extreme position, realizing independent cutoff of the airflow in that direction. This allows for selective shut-off of the airflow on one side without changing the main duct air supply, thus improving the flexibility and controllability of airflow distribution.

[0026] In summary, this application includes the following beneficial technical effects: 1. This application constructs a multi-dimensional cold air distribution architecture integrating vertical lifting, reciprocating fan sweeping, radial reciprocating extension and retraction, and dynamic blade guidance. In this architecture, the carrier plate smoothly lifts and lowers vertically under the coordination of screw drive and guide rod. The dynamic sweeping structure generates reciprocating fan sweeping motion using a motion conversion chain consisting of a turntable, slider, convex rod, and cross rod. The movable air duct component achieves radial reciprocating extension and retraction of the guide assembly through the linkage of worm gear and long and short support rods. Inside the guide assembly, multiple blades are driven to reciprocate synchronously through gears and racks. The above-mentioned motions are coupled with each other, so that the blown cold air forms a continuously changing sweeping trajectory on the surface of the tea extraction container, effectively eliminating the inherent cooling dead zone and temperature stratification of the fixed air duct, and significantly improving the uniformity of the temperature field in the temperature control chamber.

[0027] 2. This application features a multi-dimensional adjustable structure with lifting stroke, radial reciprocating extension and retraction, and blade swing angle, providing strong adaptability to various working conditions. The lifting stroke can accommodate extraction containers of different heights, and the radial reciprocating extension and retraction can automatically adjust the air outlet distance according to the container capacity. The continuously adjustable blade swing angle and the function of completely closing and cutting off the airflow allow for precise control of the air outlet direction, air volume, and coverage area as needed. This not only meets the differentiated temperature requirements at different stages of the tea extraction process but also allows for compatibility with different container sizes without hardware replacement, significantly improving the equipment's versatility and flexibility.

[0028] 3. This application achieves closed-loop linkage control of the aforementioned mechanical actions through a controller and temperature sensors distributed in the temperature control chamber. Based on real-time temperature feedback, the controller can independently or in conjunction with other controllers adjust the lifting speed, swing amplitude, extension and retraction amount, and blade swing parameters. When a local temperature difference is detected, the dynamic sweeping intensity of the corresponding area can be enhanced in real time to achieve precise and rapid temperature balance control. In conjunction with the air filter in the closed circulation duct, while ensuring the accuracy and uniformity of temperature control, the cleanliness of the circulating airflow is also ensured, providing a stable and hygienic low-temperature environment for tea extraction. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the circulating air-cooled temperature control device of this application; Figure 2 This is a schematic diagram of the internal structure of the main body of the equipment in this application; Figure 3 This is a schematic diagram of the cold air distribution mechanism of this application; Figure 4 This is a schematic diagram of the dynamic sweep structure of this application; Figure 5 This application Figure 4 A side view of the connection between the central support, the second motor, and the turntable; Figure 6 This is a three-dimensional structural diagram of the connection between the slider and the convex rod in this application; Figure 7 This is a structural schematic diagram of the active air duct component of this application; Figure 8 This is a schematic diagram of the flow guiding component of this application; Figure 9 This application Figure 8 A partial structural diagram showing the connection between the rack, driven gear, and blades.

[0030] Explanation of reference numerals in the attached drawings: 1. Main body of the equipment; 2. Refrigeration cycle system; 3. Door; 4. Temperature control chamber; 5. Cold air outlet; 6. Circulating air duct; 7. Support; 8. Partition plate; 9. Cold air distribution mechanism; 41. Temperature sensor; 61. Cover; 62. Circulating fan; 63. Air filter; 91. Carrier plate; 92. Internal threaded sleeve; 93. Screw; 94. First motor; 95. Guide rod; 96. Dynamic sweeping structure; 961. Positioning plate; 962. Support; 963. Second motor; 964. Turntable; 965. Slider; 966. Convex... 967. Cross-shaped support rod; 968. Base; 969. Movable air duct component; 9691. Cover; 9692. Third motor; 9693. Worm gear; 9694. Worm wheel; 9695. Support column; 9696. Chassis; 9697. Long support rod; 9698. Short support rod; 9699. Flow guide assembly; 96910. Connector; 96990. Cover; 96991. Rectangular channel; 96992. Fourth motor; 96993. Drive gear; 96994. Rack; 96995. Driven gear; 96996. Blade. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 This application will be described in further detail below.

[0032] Please see Figure 1 and Figure 2This application provides a circulating air-cooled temperature control device for tea extraction process, including a main body 1. A refrigeration circulation system 2 for generating cooling capacity is provided on one side of the main body 1, and a temperature control chamber 4 for accommodating tea extraction containers is provided on the other side of the main body 1. A door 3 is hinged to the front of the temperature control chamber 4 of the main body 1, and the tea extraction containers can be placed in or taken out by opening the door 3. A cold air outlet 5 is provided on the side of the refrigeration circulation system 2 near the temperature control chamber 4, and a circulating air duct 6 is provided below the cold air outlet 5. A partition 8 is embedded and fixed in the upper part of the temperature control chamber 4. An airflow circulation loop is formed between the refrigeration circulation system 2, the temperature control chamber 4, the cold air outlet 5 and the circulating air duct 6 to realize the circulation of cold air.

[0033] The temperature control chamber 4 has a support 7 for detachably fixing the tea extraction container on its bottom side. The support 7 has a hollow structure to allow cold air to circulate, ensuring that the cold air can pass through the support 7 and return from the bottom of the container. The inner wall of the temperature control chamber 4 is provided with a heat insulation layer to reduce cold loss, and at least one temperature sensor 41 is provided on the heat insulation layer to detect the temperature of the temperature control chamber 4 and the tea extraction container. The temperature sensor 41 is electrically connected to the controller of the equipment. The refrigeration cycle system 2 includes a compressor, condenser, expansion valve and evaporator connected in a closed loop in sequence. A circulating fan 62 is provided in the circulating air duct 6 to drive the airflow through the evaporator to exchange heat and form circulating cold air, which is then sent into the temperature control chamber 4 to cool the tea extraction container. The circulating fan 62 is covered by a cover 61, and an air filter 63 is provided on the side of the cover 61 closest to the temperature control chamber 4 to ensure the cleanliness of the circulating airflow.

[0034] A cold air distribution mechanism 9 is installed inside the partition 8, such as... Figure 3 As shown, the cold air distribution mechanism 9 includes a rectangular carrier plate 91. Two threaded sleeves 92 are threaded through each of the two diagonal sides of the carrier plate 91. Each threaded sleeve 92 is threaded with a screw 93. The top ends of both screws 93 are connected to the bottom output end of a first motor 94, and both first motors 94 are locked and fixed to the top side of a partition plate 8. Two guide rods 95 slide through each of the two diagonal sides of the carrier plate 91, and the top sides of both guide rods 95 are fixed to the partition plate 8. When the two first motors 94 operate synchronously, they drive the two screws 93 to rotate synchronously. With the cooperation of the screws 93 and the threaded sleeves 92, the carrier plate 91 moves up and down along the guide rods 95, thereby adjusting the vertical position of the entire cold air distribution mechanism 9. A dynamic sweeping structure 96 is locked and fixed to the bottom center of the carrier plate 91. The four sides of the dynamic sweeping structure 96 are connected to the cold air outlet 5 via flexible hoses. The hoses are flexible and can adapt to the lifting and lowering motion.

[0035] like Figures 4 to 6The dynamic sweeping structure 96 includes a positioning plate 961 fixed to the top of a carrier plate 91. A support 962 is locked to the bottom side of the positioning plate 961. A second motor 963 is locked to the rear bottom of the support 962. A turntable 964 is connected to the front output end of the second motor 963, and the turntable 964 rotates through the middle of the bottom of the support 962. A V-shaped piece is provided on the inner side of the circular part of the turntable 964. A groove is opened inside one side of the V-shaped piece. A slider 965 is slidably connected inside the groove. A protruding rod 966 is connected to the front inside the slider 965. Specifically, the rear end of the protruding rod 966... The part is spherical, and a hemispherical groove is opened on the front side of the slider 965. The spherical part of the convex rod 966 is inserted into the hemispherical groove and rotates to form a ball joint structure. The front side of the convex rod 966 is open, and a cross rod 967 is rotatably inserted through the left and right sides of the opening. The cross rod 967 is cross-shaped, and its top is inserted into the shaft hole provided on the front side of the support 962. The bottom of the cross rod 967 is integrally formed with a base 968. The bottom of the base 968 is locked and fixed with a movable air duct component 969. The four sides of the movable air duct component 969 are respectively connected to the cold air outlet 5 through a flexible hose.

[0036] When the second motor 963 drives the turntable 964 to rotate, the V-shaped plate rotates with the turntable, the slide groove drives the slider 965 to slide back and forth along the groove, and through the ball joint connection, it drives the convex rod 966 to push and pull the cross rod 967 to swing back and forth around its top fulcrum, so that the base 968 and the movable air duct component 969 below it perform a reciprocating fan sweeping motion as a whole, changing the direction of dynamic airflow.

[0037] like Figure 7 The movable air duct component 969 includes a cover 9691 that is fastened to the top of the base 968. A third motor 9692 is locked and fixed inside the top side of the cover 9691. A worm gear 9693 is connected to the front output end of the third motor 9692. A worm wheel 9694 is meshed and driven on the side of the worm gear 9693. A support column 9695 is fixed through the middle of the worm wheel 9694. The top of the support column 9695 is inserted into and rotates in the middle of the cover 9691. The bottom of the support column 9695 is fixed to the chassis 9696. The top middle of the chassis 9696 is rotatably connected to the cover 9691. The chassis 9696 has four long support rods 9697 arranged in a cross shape on its top outer side. Each of the four long support rods 9697 is rotatably connected to a short support rod 9698. The side of each of the four short support rods 9698 away from the long support rods 9697 is rotatably connected to the hood 9691. Specifically, the long support rods 9697 and the short support rods 9698 are connected by a pivot column, and the long support rods 9697 are divided into long and short sides by the pivot column. The short side is located below the short support rods 9698, forming a lever-type transmission. A flow guide assembly 9699 is tightly attached to the bottom of the side of each of the four long support rods 9697 away from the short support rods 9698. Each of the four flow guide assemblies 9699 has a connector 96910 on its outer side, and the connector 96910 is connected to the cold air outlet 5 through a hose.

[0038] When the third motor 9692 operates, it drives the worm wheel 9694 to rotate via the worm gear 9693. The worm wheel 9694 drives the chassis 9696 to rotate relative to the hood 9691 via the support column 9695. When the chassis 9696 rotates, it drives the lower ends of the four long support rods 9697 to make circular motion around the axis of the support column 9695. Since one end of the short support rod 9698 is hinged to the hood 9691 and the other end is connected to the long support rod 9697 through the rotating shaft column, it forms a rocker mechanism. During the rotation, the long side end of the long support rod 9697 will generate radial reciprocating extension and retraction motion, so that the four flow guiding components 9699 can synchronously move closer to or further away from the tea extraction container, adjust the air outlet distance, expand the coverage of dynamic sweeping, and adapt to tea extraction containers of different capacities.

[0039] like Figure 8 and Figure 9 The flow guiding assembly 9699 includes a shroud 96990 whose top side is fastened to a long support rod 9697. A rectangular channel 96991 is formed on the inner wall of the shroud 96990. Cold air enters the inner cavity of the shroud 96990 through a connector 96910 and is then blown out through the rectangular channel 96991. A fourth motor 96992 is locked and fixed to the upper side inside the shroud 96990. A drive gear 96993 is connected to the right output end of the fourth motor 96992. The rear side of 993 is connected to a rack 96994, which is located inside the cover 96990 and is longitudinally slidably connected to it. The front side of the rack 96994 is connected to at least ten driven gears 96995 from top to bottom. Each driven gear 96995 has a blade 96996 coaxially fixed in the middle. The blades 96996 are all installed inside the rectangular channel 96991 and can rotate synchronously at a certain angle under the action of gear drive.

[0040] When the fourth motor 96992 rotates forward and backward, the driving gear 96993 drives the rack 96994 to move up and down. The rack 96994 simultaneously drives all driven gears 96995 and their blades 96996 to swing back and forth, thereby continuously changing the direction of the airflow and forming a sweeping airflow. When it is necessary to completely shut off the airflow in a certain direction, the fourth motor 96992 drives the rack 96994 to move to the limit position, causing all blades 96996 to stand up. The blades 96996 distributed from top to bottom contact each other in sequence, forming a closed state inside the rectangular channel 96991, cutting off the airflow in that direction.

[0041] The device in this application is also equipped with a controller, which is electrically connected to a temperature sensor 41, a first motor 94, a second motor 963, a third motor 9692, a fourth motor 96992, a refrigeration cycle system 2, and a circulating fan 62. Based on a preset temperature control strategy and temperature distribution information fed back by the temperature sensor 41, the controller can independently or in conjunction with other motors control the motion parameters, such as lifting speed, swing amplitude, swing frequency, radial extension / retraction, and blade swing angle, to achieve precise adjustment of the range and speed of the dynamic sweeping of cold air. For example, when a large temperature difference is detected between the upper and lower parts of the tea extraction container, the controller can instruct the first motor 94 to drive the carrier plate 91 to reciprocate up and down within the corresponding range, while simultaneously increasing the swing speed of the second motor 963 to quickly equalize the temperature field. Through this multi-dimensional motion coupling, the tea extraction container is always in a uniform and changing cold air environment, ensuring a high degree of temperature consistency during the extraction process.

[0042] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A circulating air-cooled temperature control device for tea extraction process, comprising a main body (1), wherein a refrigeration circulation system (2) for generating cold energy is provided on one side of the main body (1), and a temperature control chamber (4) for accommodating tea extraction containers is provided on the other side of the main body (1), wherein a door (3) is hinged to the front side of the temperature control chamber (4) of the main body (1), wherein a cold air outlet (5) is provided on the side of the refrigeration circulation system (2) near the temperature control chamber (4), and a circulating air duct (6) is provided below the cold air outlet (5), wherein a partition (8) is embedded and fixed in the upper part of the temperature control chamber (4), and an airflow circulation loop is formed between the refrigeration circulation system (2), the temperature control chamber (4), the cold air outlet (5) and the circulating air duct (6); Its features are: A cold air distribution mechanism (9) is installed inside the partition (8). The cold air distribution mechanism (9) includes a rectangular carrier plate (91). A threaded sleeve (92) is installed on each of the two diagonal sides of the carrier plate (91). A screw (93) is threaded inside each of the two threaded sleeves (92). The top of each screw (93) is connected to the bottom output end of a first motor (94). Both first motors (94) are locked and fixed to the top side of the partition (8). A guide rod (95) is slidably installed on each of the two diagonal sides of the carrier plate (91). The top of each guide rod (95) is fixed to the partition (8). A dynamic sweeping structure (96) is locked and fixed to the bottom middle side of the carrier plate (91). The four sides of the dynamic sweeping structure (96) are connected to the cold air outlet (5) through a hose.

2. The circulating air-cooled temperature control device for tea extraction process according to claim 1, characterized in that: The temperature control chamber (4) has a support (7) for detachably fixing the tea extraction container on the bottom side. The support (7) has a hollow structure to allow cold air to circulate. The inner wall of the temperature control chamber (4) is provided with a heat insulation layer, and at least one temperature sensor (41) is provided on the heat insulation layer for detecting the temperature of the temperature control chamber (4) and the tea extraction container.

3. The circulating air-cooled temperature control device for tea extraction process according to claim 1, characterized in that: The refrigeration cycle system (2) includes a compressor, a condenser, an expansion valve and an evaporator connected in a closed loop in sequence; the circulating air duct (6) is provided with a circulating fan (62) to drive the airflow through the evaporator of the refrigeration cycle system (2) to exchange heat and form circulating cold air, and send the circulating cold air into the temperature control chamber (4) to cool the tea extraction container.

4. The circulating air-cooled temperature control device for tea extraction process according to claim 3, characterized in that: The circulating fan (62) is covered by a cover (61), and an air filter (63) is provided on the side of the cover (61) near the temperature control chamber (4).

5. The circulating air-cooled temperature control device for tea extraction process according to claim 1, characterized in that: The dynamic sweeping structure (96) includes a positioning plate (961) fixed to the top of a carrier plate (91). A support (962) is locked to the bottom side of the positioning plate (961). A second motor (963) is locked to the rear bottom of the support (962). A turntable (964) is connected to the front output end of the second motor (963). The turntable (964) rotates through the middle of the bottom of the support (962). A V-shaped piece is provided on the inner side of the circular part of the turntable (964). A groove is opened inside one side of the V-shaped piece. A sliding connection is slidably connected inside the groove. The slider (965) has a convex rod (966) connected to its front side. The convex rod (966) has an open front side, and a cross rod (967) is rotatably inserted through the left and right sides of the open side. The top of the cross rod (967) is inserted into the front side of the support (962). The bottom of the cross rod (967) is integrally formed with a base (968). The bottom of the base (968) is locked and fixed with a movable air duct component (969). The four sides of the movable air duct component (969) are respectively connected to the cold air outlet (5) through a flexible hose.

6. The circulating air-cooled temperature control device for tea extraction process according to claim 5, characterized in that: The rear end of the convex rod (966) is spherical, and a hemispherical groove is provided on the front side of the slider (965), and the spherical part of the convex rod (966) is inserted into and rotates inside the hemispherical groove.

7. The circulating air-cooled temperature control device for tea extraction process according to claim 5, characterized in that: The movable air duct component (969) includes a hood (9691) whose top is fastened to the base (968). A third motor (9692) is locked and fixed inside the top side of the hood (9691). A worm gear (9693) is connected to the front output end of the third motor (9692). A worm wheel (9694) is meshed and driven on the side of the worm gear (9693). A support column (9695) is fixed through the middle of the worm wheel (9694). The top of the support column (9695) is inserted and rotated in the middle of the hood (9691), and the bottom of the support column (9695) is fixed to the chassis (9696). The top middle of the chassis (9696) is connected to the hood (9691). 9691) Rotatable connection, the chassis (9696) has four long support rods (9697) rotatably distributed in a cross shape on the outer side of the top. Each of the four long support rods (9697) is rotatably connected to a short support rod (9698). The side of each of the four short support rods (9698) away from the long support rods (9697) is rotatably connected to the hood (9691). Each of the four long support rods (9697) has a flow guide assembly (9699) tightly attached to the bottom of the side away from the short support rods (9698). Each of the four flow guide assemblies (9699) has a connector (96910) on its outer side. The connector (96910) is connected to the cold air outlet (5) through a hose.

8. The circulating air-cooled temperature control device for tea extraction process according to claim 7, characterized in that: The long support rod (9697) and the short support rod (9698) are connected by a pivot column, and the long support rod (9697) is divided into a long side and a short side by the pivot column, with the short side located below the short support rod (9698).

9. A circulating air-cooled temperature control device for tea extraction process according to claim 7, characterized in that: The flow guiding assembly (9699) includes a shroud (96990) whose top side is fastened to a long support rod (9697). A rectangular channel (96991) is opened on the inner side wall of the shroud (96990). A fourth motor (96992) is locked and fixed inside the upper side of the shroud (96990). A drive gear (96993) is connected to the right output end of the fourth motor (96992). A rack (96994) meshes with the rear side of the drive gear (96993). The rack (96994) is located inside the shroud (96990) and slides longitudinally with it. The rack (96994) meshes with at least ten driven gears (96995) from top to bottom on the front side of the rack (96994). Each driven gear (96995) has a blade (96996) coaxially fixed in the middle.

10. A circulating air-cooled temperature control device for tea extraction process according to claim 9, characterized in that: No fewer than ten blades (96996) are disposed inside the rectangular channel (96991), and when all blades (96996) are erected, the blades (96996) distributed from top to bottom contact each other in sequence, forming a closed state inside the rectangular channel (96991).

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