Vertical tea leaf drying device

Abstract

The invention discloses a vertical tea leaf drying device which comprises a box body, a fresh air input device, a heat regenerator, an electric heater, a circulating fan, an airflow guide control valve and a dehumidification pipe are arranged at the top of the box body, and a first vertical air duct plate and a second vertical air duct plate are further placed in the box body. The rear vertical face and the left vertical face of the box body and the first vertical air duct plate form a first air chamber, and the rear vertical face and the right vertical face in the box body and the second vertical air duct plate form a second air chamber. A certain included angle (30-60 degrees) is formed between the vertical air duct plate and the rear vertical face in the box body, airflow from the air supply holes in the air duct plate and the rotating tea trays jointly act to uniformly heat rotational flow hot air of tea leaves, and the purposes of stable interlayer water content and uniform heating are achieved. And the dehumidifying plate is arranged on the connecting pipeline of the return air and the heater, so that the fragrance of the tea leaves is greatly reserved. Temperature control associated with aroma enhancement control is designed into two-stage or three-stage heating, so that the tea baking temperature is accurately controlled, the tea is prevented from being burnt by over-high local temperature, and the energy-saving and environment-friendly effects are realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tea processing, and particularly relates to a vertical energy-saving tea drying device with flavoring. BACKGROUND

[0002] Tea drying is a key link in the tea processing process, directly affecting the quality, aroma, taste and shelf life of tea. Tea drying mainly relies on hot air drying and charcoal baking, and the initial drying is simple to implement by hot air circulation and is not easy to cause tea to be scorched.

[0003] A general vertical tea dryer, such as those described in patents CN208108717U, CN204722173U and CN210036044U, is internally provided with several trays for loading tea, is sealed by a door, and is provided with control instruments and meters at the upper part or side, and four rolling wheels at the bottom to facilitate the movement of the dryer. An electric heater is installed on the inner wall to dry the tea, or a driving motor is installed at the bottom to rotate the tea tray support frame to enhance the uniformity of tea heating, but due to the defects of the structure itself, the tea is not evenly heated, there is no measure to improve the quality of the tea, and no energy recovery technology is used. The existing drying device usually has only one door seal for the operation door, and each time the door is opened, the heat of all tea trays is affected. The existing tea dryer uses adsorbent material to absorb moisture to deal with water vapor, which is not friendly to aroma preservation and enhancement, because the adsorbent material not only adsorbs water vapor but also adsorbs aroma gas, causing loss of aroma, and secondly, tea debris is easily trapped in the adsorbent due to the entrainment of circulating air.

[0004] Therefore, there is a lack of a tea drying technology that can achieve high efficiency, energy saving, aroma enhancement and simplified operation process in the prior art, which has become a technical problem to be solved.

[0005] The present application is based on the above deficiencies, and provides a vertical energy-saving tea dryer with flavoring, which optimizes the drying process and equipment structure design to achieve energy saving, aroma enhancement and operation simplification of tea drying, to meet the high quality requirements of modern tea processing. SUMMARY

[0006] The present application provides a vertical tea drying device, which solves the problems of low tea drying efficiency and high energy consumption in the prior art, and improves the aroma of tea.

[0007] According to one aspect of the present application, a vertical tea drying device is provided, comprising: a box body, the top of the box body is provided with a fresh air input device, a regenerator, an electric heater, a circulating fan, an air flow guide control valve and a dehumidification pipe, and the inside of the box body is further placed with a first and a second vertical air duct plate, the rear vertical surface and the left vertical surface of the box body and the first vertical air duct plate form a first air chamber, and the rear vertical surface and the right vertical surface inside the box body and the second vertical air duct plate form a second air chamber.

[0008] Preferably, the box interior is also provided with a multi-layer support structure, which is a hollow support pipe, facilitating the access of tea trays, and the multi-layer support structure is a multi-layer annular pipe fixedly connected to a semi-cylindrical support having a semi-circular upper and lower bottom and three side edges connected to the upper and lower bottom. The support pipe is a hollow pipe in the same plane by connection or coiling, and the support pipe can be a disc according to needs, and the support pipe is used for placing tea trays.

[0009] The vertical air duct plate is perpendicular to the bottom surface of the box, and the angle between the vertical air duct plate and the rear vertical surface and the side vertical surface of the box is an acute angle, and the projection of the first and second air chambers on the bottom surface of the box is an isosceles right triangle. The first and second vertical air duct plates are provided with air supply holes, the first vertical air duct plate and the rear vertical surface and the left side vertical surface of the box form a first air chamber, and the second vertical air duct plate and the rear vertical surface and the right side vertical surface of the box form a second air chamber.

[0010] Preferably, the vertical air duct plate is a detachable vertical air duct plate. The vertical air duct plate is provided with uniformly or non-uniformly distributed air supply holes, and the opening rate is greater than 60%.

[0011] The box top is also provided with a driving motor and a worm, the worm and the support structure are connected through a triangular or disc-shaped connector, and the driving motor drives the support structure to rotate through the worm and the connector, so that the tea is heated more uniformly.

[0012] The pipes connected between the fresh air input device, the humidity monitor, the air flow control valve, the heat accumulator, the heater, and the circulating fan are all hollow pipes.

[0013] The box interior is also provided with a plurality of temperature and humidity acquisition devices, which monitor the temperature and humidity in the drying process in real time.

[0014] The circulating fan is connected with the hollow pipe, and the circulating fan delivers the heated air flow to the air chamber through the hollow pipe, the air flow in the air chamber is delivered to the tea heating chamber through the air supply holes in the air duct plate, and the included angle between the air supply plate and the rear vertical surface of the box is an acute angle, preferably the included angle is 30-60°, and the effect is best when the included angle is 35-45°.

[0015] In an embodiment of the present application, the hollow pipe is arranged at the upper part of the box, and the number of air supply holes of the air duct plate is less at the upper part than at the lower part. The number of air supply holes of the air duct plate is distributed according to the distance from the hollow pipe, so as to balance the air flow resistance by changing the number of openings, and ensure that the upper and lower tea trays are heated uniformly, and the smaller the temperature difference in each area of the box interior, the better the flow arrangement.

[0016] In another embodiment of the present application, the hollow duct is arranged in the lower part of the cabinet, and the number of air supply holes of the air duct plate is less in the lower part than in the upper part to achieve uniform distribution of air flow.

[0017] In another embodiment of the present application, the hollow duct is arranged in the middle part of the cabinet, and the number of air supply holes of the air duct plate is less in the central region than in the peripheral region.

[0018] The air flow circulating in the cabinet is discharged through the return air duct, and a dehumidification plate is arranged on the return air duct and the heater connecting duct, and the dehumidification plate is selected as a condensation plate, and the condensation plate adopts a plug-in ice crystal cooling module.

[0019] As the support device of the tea tray is driven to rotate clockwise by the worm, the hot air after heating is transported into the cabinet through the air supply holes on the second vertical air duct plate from the second air chamber, and forms a rotational flow of hot air with the rotating tea tray to change the air supply flow angle, and the air flow angle after the recombination is 45-60° (horizontal direction), and the air supply is uniformly heated on the tea through the recombination of the air supply angle and the air flow rotation driven by the rotation of the tea tray, and the pressure formed on the tea tray guides the moisture evaporated from the tea to the outer edge due to the different speeds of the outer edge and the central region of the tea tray, and finally enters the return air duct through the first air chamber, and then enters the heater, thereby realizing the circulation of hot air flow. In this way, according to the law of fluid mechanics, the air flow containing moisture after heating is guided to the first air chamber into the return air passage in the same direction as the rotation direction of the worm, thereby avoiding the difference in heating and water content caused by the upward flow of water vapor after heat and mass transfer, and minimizing the upward flow of steam, thereby realizing the technical effects of stable moisture content between layers and uniform heating.

[0020] The circulating air is sequentially transported to the temperature and humidity monitor and the air flow guide control valve outside the cabinet through the return air duct, and the subsequent return air duct is connected to the regenerator and the heater in switching mode, that is, the return air can directly bypass the regenerator, and when the humidity exceeds the set value, the control valve is opened and the fresh air input device is started, the air flow is communicated with the regenerator passage, the new air is input while the exhaust air is exhausted, the heat carried by the air flow is transferred to the new air for heat exchange to preliminarily heat the air flow, and then the air flow is transported to the heater for further heating, and then the heated air flow is transported to the hollow duct into the cabinet by the circulating fan; when the humidity is lower than the set value, the control valve is closed, and the air flow directly flows through the heater and then enters the circulation again.

[0021] Because the green smell of tea needs to be discharged before 70 DEG C, the stage is empty. After 70 DEG C, beneficial aroma gas in tea will be discharged, and the discharge of tea aroma needs to be reduced. However, the existing tea dryer uses adsorption material to absorb moisture in order to independently process water vapor. This technology is not friendly to aroma preservation and enhancement, because the aroma gas is also adsorbed while the water vapor is adsorbed, and the adsorbent is easily blocked due to the tea debris carried in the circulating air. The dehumidification plate is installed on the return air pipeline and the heater connecting pipeline, the dehumidification plate is selected as a condensation plate, the condensation plate uses a plug-in ice crystal cooling module (some sealed ice crystals used in water-cooled circulating fans), and the moisture in the circulating gas is condensed by the condensation plate. The water is automatically discharged or manually cleaned by the water valve when the amount reaches a certain amount. In the application, the humidity in the circulating air is reduced by installing a dehumidification plate on the return air and the heater connecting pipeline, and the aroma of tea is retained, effectively improving the quality of tea baking.

[0022] The temperature control associated with the aroma control is designed as two-stage or three-stage heating. When rapid heating is needed, two-stage or three-stage heating (two groups or three groups) is used, and the temperature is heated to a certain temperature. At this time, the circulating air has a certain energy, and only low heating power is needed for heat preservation. One-stage heating (one group of heating wires) can be used to avoid local temperature too high and burn the tea while achieving the effect of energy saving and environmental protection. Two-stage heating or three-stage heating is set according to the tea drying capacity. Small two-group heating power can meet the setting of two-stage heating, and tea dryer with larger diameter needs three-stage heating power. Precise power matching is also conducive to energy saving.

[0023] During the tea drying process, the door needs to be opened frequently to check the uniformity of tea drying. In order to reduce the influence of opening the door on the quality of tea, the front is designed as three independent doors, which can accurately control the opening area and greatly reduce the adverse effects on other space tea. When the existing tea dryer is opened, the support is in a random state facing the door, and the tea tray is a triangular support. The door is often blocked by the triangular support, so it needs to be closed and randomly waited for a period of time before opening. The rotation angle of the worm is set so that the tea is not blocked by the triangular support when the door is opened. In this way, the tray can be taken out every time the door is opened, thereby reducing unnecessary door opening times, and at the same time, energy saving and environmental protection are achieved.

[0024] The beneficial effects of the embodiments of the application are:

[0025] The application realizes uniform heating of tea by making the airflow after the air supply hole is tilted interact with the rotating tea tray to form a rotating airflow of hot air on the tea, thereby achieving the technical effects of stabilizing the moisture content between layers and uniform heating. By installing a dehumidification plate on the return air and the heater connection pipeline, the aroma of the tea is greatly preserved, effectively improving the quality of tea roasting. The temperature control associated with the aroma control is designed as two or three levels of heating, which accurately controls the tea roasting temperature while avoiding local high temperature burning of tea and achieving the technical effects of energy saving and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some example embodiments of the present application. Those skilled in the art can obtain other drawings according to the content of the example embodiments of the present application and these drawings without creating any creative labor.

[0027] Figure 1 Figure 1 is a schematic diagram of the main structure of a tea roasting aroma machine;

[0028] Figure 2 Figure 2 is a top view of a tea tray and an air duct plate;

[0029] Figure 3 Figure 3 is a schematic diagram of the opening of an air duct plate;

[0030] Figure 4 Figure 4 is a schematic diagram of the included angle between the air duct plate and the rear vertical surface of the box;

[0031] Figure 5 Figure 5 is an electric heater and its arrangement;

[0032] Figure 6 Figure 6 is a schematic diagram of the connection between the heat exchanger and the heater.

[0033] In the figure, 1 is a box, 2 is a heat exchanger, 3 is a heater, 4 is a circulating fan, 5 is an air supply channel, 6 is a dehumidification plate, 701 is a first vertical air duct plate, 702 is a second vertical air duct plate, 703 is an air duct plate air supply hole, 8 is a support structure, and 9 is a door handle. DETAILED DESCRIPTION

[0034] The application will be further described in conjunction with the drawings and specific embodiments. In order to make the drawings simple, only the parts related to the disclosure are shown in the drawings, and they do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is marked. In this document, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0035] In this document, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this disclosure can be understood according to the specific circumstances.

[0036] In this disclosure, unless otherwise explicitly specified and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature of the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the present embodiment, the orientation or position relationship of the terms "up", "down", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0038] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.

[0039] Embodiment one

[0040] As shown in the accompanying drawings, a vertical flavoring type tea drying device is shown. Figures 1-6

[0041] Referring to Figure 1 , Figure 1 ​This is a schematic diagram of the overall internal structure of a vertical aroma-enhancing tea drying device according to one embodiment of this application. The vertical tea drying device includes a housing 1. The top of the housing 1 is equipped with a fresh air input device, a regenerator 2, an electric heater 3, a circulating fan 4, an airflow control valve (not shown in the figure), and a dehumidifier plate 6. A first vertical air duct plate 701 and a second vertical air duct plate 702 are respectively placed between the rear facade and the left and right side facades of the housing 1. The rear facade and left side facade of the housing 1, together with the first vertical air duct plate 701, form a first air chamber, and the rear facade and right side facade of the housing 1, together with the second vertical air duct plate 702, form a second air chamber. A controller 5 is installed on the side facade of the housing 1. The controller 5 is used to set and adjust parameters, including the heating temperature, humidity, and heating time inside the housing 1, the fan speed, and the electric heating frequency converter. Multiple temperature and humidity acquisition devices are also installed inside the housing 1 to collect the temperature and humidity of various areas inside the housing 1. A temperature and humidity monitor is installed on the top, side, or front of the enclosure 1 to facilitate staff monitoring the operating temperature inside the enclosure 1. The temperature and humidity acquisition device is electrically connected to the controller 5 and the temperature and humidity monitor.

[0042] See Figure 2 , Figure 2 for Figure 1 The embodiment shows a top view of the tea tray and the air duct plate. The vertical air duct plates 701 and 702 are perpendicular to the bottom surface of the housing 1 and form an angle of 45° with the rear and side surfaces of the housing 1. The projection of the vertical air duct plate 701 or 702 onto the bottom surface of the housing 1 forms an isosceles right triangle with the rear and side surfaces of the housing 1. The vertical air duct plate 701 or 702 can be detachably connected within the housing 1, for example, through a latching engagement with a locking groove, a screw and nut tightening engagement, or other conventional connection methods in the art. The vertical air duct plate 701 or 702 can also be fixedly integrated with the housing 1, for example, through welding, riveting, or other conventional methods.

[0043] The pipes connecting the fresh air input device, airflow control valve (not shown in the figure), regenerator 2, heater 3, circulating fan 4, and multi-layer support structure 8 are all hollow pipes. The circulating fan 4 delivers the heated airflow through the hollow pipes to the second air chamber, and the airflow in the second air chamber is delivered to the tea heating chamber through the air outlets 703 on the duct plate 702. The distribution of the number of air outlets on the duct plate can be uneven, and can be set according to the distance between the duct plate 702 and the hollow pipes, so as to balance the airflow resistance by varying the number of openings, ensuring that the upper and lower tea trays are heated evenly. The smaller the temperature difference between different areas inside the box, the better the flow channel arrangement.

[0044] See Figure 3 ,Figure 3 A display of the vertical air duct plate 701, 702 on the layout of the uneven distribution of air supply hole 703, the hollow pipe is arranged in the upper part of the box 1, the upper surface of the air duct plate 701, 702 is close to the hollow pipe, and the lower surface is away from the hollow pipe, therefore, the number of air supply hole 703 is less in the upper part than in the lower part.

[0045] The box 1 top is also provided with driving motor and worm, the worm and the support structure are connected through the triangular connecting piece, the driving motor drives the multi-layer support structure 8 to rotate through the worm. Because the support device 8 of the tea tray is driven by the worm to rotate clockwise, the heated airflow, that is, the hot air is transported to the box 1 through the air supply hole 703 on the right air duct plate 702 from the second air chamber, and the rotating tea tray cooperates to form a rotational flow of hot air to the tea, changes the air supply flow angle, and the airflow angle range after the recombination is 35-40°. Through the air supply angle and the airflow rotation driven by the tea tray rotation recombination, the air supply realizes uniform heating on the tea, and because the speed of the outer edge and the center area of the tea tray is different, the pressure formed on the tea tray guides the moisture evaporated by the tea to the outer edge and finally enters the return air duct through the first air chamber, and then enters the heater 3, thereby realizing the circulation of the hot airflow. In this way, according to the law of fluid mechanics, the airflow containing moisture after heating is guided to the first air chamber into the return air passage in the same direction as the worm rotation direction, avoiding the difference of each layer heating and water content caused by the upward flow of water vapor after heat and mass transfer, which can minimize the upward flow of steam, realize the technical effects of stable and uniform heating of moisture content between layers.

[0046] Referring to Figure 4 , Figure 4 for Figure 1 The angle between the air supply plate of the embodiment shown and the rear vertical surface of the box is shown. In some embodiments, the angle between the air supply plate and the rear vertical surface of the box 1 is β, which is an acute angle, and the angle of the angle is preferably 30°. By making the airflow of the air supply hole 703 and the tea tray cooperate to form a rotational flow of hot air to the tea, uniform heating is realized, and the technical effects of stable and uniform heating of moisture content between layers are achieved. The box 1 is also provided with a plurality of temperature and humidity collection devices inside, which are used to monitor the temperature and humidity changes of each part in the box 1 in real time.

[0047] Referring to Figure 5 , Figure 5 for Figure 1The structure diagram of the heater and its arrangement of the embodiment shown. The air flow in the box 1 is circulated and then discharged through the return air duct, and is sequentially delivered to the temperature and humidity monitor and the air flow control valve outside the box 1. When the humidity exceeds the set value, the air flow control valve is opened, the fresh air input device is started, the air flow is communicated with the channel of the regenerator 2 to discharge the moisture, and then the air flow is delivered to the heater 3. The air flow is then delivered to the air supply duct into the box 1 through the circulating fan 4. When the humidity is lower than the set value, the control valve is closed, and the air flow directly flows through the heater 3 and then enters the circulation again. The dehumidifier 6 is installed on the connecting duct of the return air duct and the heater 3, which reduces the water content and the discharge of the fragrance gas, greatly retains the aroma of the tea leaves, and effectively improves the quality of the tea leaf baking.

[0048] Referring to Figure 6 , Figure 6 for Figure 1 The structure diagram of the heater and its arrangement of the embodiment shown. The top of the box 1 is provided with two-stage or three-stage heaters 3, and each stage of the heater 3 includes a group of heating wires. The temperature control associated with the flavoring control is designed as two-stage or three-stage heating, and the multi-stage heating can flexibly adjust the power of each stage according to the actual needs. For example, according to the different drying stages of the tea leaves or the water content of the tea leaves, when the water content of the tea leaves is high, two-stage or three-stage heating is adopted to increase the heating power to quickly remove water; when the water content is reduced, one-stage heating is adopted to gradually reduce the temperature and the power to maintain a suitable temperature, deeply remove the internal moisture, shorten the overall drying time, and avoid energy waste. For another example, the two-stage or three-stage heating can also be set according to the tea leaf drying capacity. A small tea leaf dryer can be set to two-stage heating with two groups of heating power, and a tea leaf dryer with a larger diameter needs a three-stage heating power. Precise power matching is also conducive to energy saving.

[0049] During the tea leaf drying process, the door needs to be opened frequently to check the uniformity of the tea leaf drying. The old tea leaf dryer does not have a program setting, and the position of the tea leaf tray facing the door is random, which may not be able to take out the tray. At this time, the door can only be closed and randomly waited for a period of time before being opened again. This random way will increase the number of door openings and cause energy waste. In the embodiment of the present application, in order to reduce the influence of the number of door openings on the quality of the tea leaves, the front of the box 1 is designed as three independent doors, so that the opening area can be accurately controlled, and the adverse effects on the tea leaves in other spaces can be greatly reduced. At the same time, the top of the box 1 is also provided with a driving motor and a worm, and the worm and the support structure are connected through a triangular connecting piece. The driving motor drives the multi-layer support structure 8 to rotate through the worm. Before the tea leaf dryer starts to work, the operator can set the rotation angle of the worm through the program of the controller 5, so that the tea leaves are not blocked by the triangular support when the door is opened, and the tea leaf tray can be smoothly taken out, reducing unnecessary door openings, and achieving energy saving and environmental protection at the same time.

[0050] Embodiment Two

[0051] Embodiment Two shows a vertical tea leaf drying device with flavoring function according to the present application.

[0052] Referring to Figure 1 , Figure 1 is a structural schematic diagram of the whole inside of the vertical tea leaf drying device with flavoring function in an embodiment of the present application. The vertical tea leaf drying device includes a box body 1, the top of which is provided with a fresh air input device, a regenerator 2, an electric heater 3, a circulating fan 4, an air flow control valve (not shown in the figure) and a dehumidification plate 6. The rear vertical surface and the left and right vertical surfaces of the box body 1 are respectively placed with a first vertical air duct plate 701 and a second vertical air duct plate 702, the rear vertical surface, the left vertical surface and the first vertical air duct plate 701 constitute a first air chamber, and the rear vertical surface, the right vertical surface and the second vertical air duct plate 702 constitute a second air chamber. A controller 5 is arranged on the side vertical surface of the box body 1, which is used to set and adjust parameters, including the heating temperature, humidity and heating time inside the box body 1, the fan gear and the electric heating frequency conversion. A plurality of temperature and humidity acquisition devices are further arranged inside the box body 1, which are used to acquire the temperature and humidity of each area inside the box body 1. A temperature and humidity monitor is arranged on the top or side vertical surface or front surface of the box body 1, which is convenient for the staff to observe the working temperature inside the box body 1. The temperature and humidity acquisition devices are electrically connected between the controller 5 and the temperature and humidity monitor.

[0053] Referring to Figure 2 , Figure 2 is Figure 1 a top view schematic diagram of the tea leaf tray and the air duct plate in the embodiment. The vertical air duct plates 701 and 702 are perpendicular to the bottom surface of the box body 1 and form an angle of 45° with the rear vertical surface and the side vertical surface of the box body 1, and the projection of the vertical air duct plate 701 or 702 on the bottom surface of the box body 1 forms an isosceles right triangle with the rear vertical surface and the side vertical surface of the box body 1. The vertical air duct plate 701 or 702 can be arranged in the box body 1 by a detachable connection mode, such as the clamping cooperation of the lock tongue and the lock groove, the tightening cooperation of the screw and the nut or other connection modes in the prior art. The vertical air duct plate 701 or 702 can also be arranged in the box body 1 in a fixed integrated manner, such as by welding, riveting or other conventional modes.

[0054] The new air input device, air flow control valve (not shown in the figure), regenerator 2, heater 3, circulating fan 4, and the pipes connecting the multi-layer support structure 8 are all hollow pipes. The circulating fan 4 delivers the heated air flow through the hollow pipes to the second air chamber, and the air flow in the second air chamber is delivered to the tea heating chamber through the air supply holes 703 on the air duct plate 702. The number of air supply holes on the air duct plate can be unevenly distributed, and can be set according to the distance between the air duct plate 702 and the hollow pipe, so as to balance the air flow resistance by changing the number of holes, and ensure that the upper and lower tea trays are evenly heated. The smaller the temperature difference between each area inside the box, the better the flow arrangement.

[0055] Referring to Figure 3 , Figure 3 B shows that the vertical air duct plate 701, 702 is provided with non-uniformly distributed air supply holes 703, the hollow pipe is arranged at the lower part of the box 1, and the number of air supply holes of the air duct plate 701, 702 is less at the lower part than at the upper part, so as to realize uniform distribution of air flow.

[0056] Referring to Figure 4 , Figure 4 For Figure 1 the angle between the air supply holes of the embodiment and the rear vertical surface of the box is shown in the schematic view. In some embodiments, the angle between the air supply plate and the rear vertical surface of the box 1 is β, which is an acute angle, and preferably the angle is 45°. The box 1 is also provided with a driving motor and a worm at the top, and the worm and the support structure are connected by a triangular connecting piece. The driving motor drives the multi-layer support structure 8 to rotate through the worm, so that the tea tray rotates. By making the air flow of the air supply hole 703 and the tea tray work together to form a rotational flow of hot air for tea, uniform heating is achieved, and the technical effects of stable and uniform heating between layers are achieved. The box 1 is also provided with a plurality of temperature and humidity collection devices inside, for real-time monitoring of the temperature and humidity changes of each part inside the box 1.

[0057] Referring to Figure 5 , Figure 5 For Figure 1The structure diagram of the heater and its arrangement of the embodiment shown. The air flow in the box 1 is circulated and then discharged through the return air duct, and is sequentially delivered to the temperature and humidity monitor and the air flow control valve outside the box 1. When the humidity exceeds the set value, the air flow control valve is opened, the fresh air input device is started, the air flow is communicated with the channel of the regenerator 2 to discharge the moisture, and then the air flow is delivered to the heater 3, and then the air flow is delivered to the air supply duct into the box 1 through the circulating fan 4. When the humidity is lower than the set value, the control valve is closed, and the air flow directly flows through the heater 3 and then enters the cycle again. The dehumidifier 6 is installed on the connecting duct of the return air duct and the heater 3. The water vapor in the circulating air will condense and form condensate water when it is cooled, which reduces the water content and also reduces the discharge of fragrance gas, greatly retains the aroma of tea leaves, and effectively improves the quality of tea baking. The dehumidification plate 6 selects a condensation plate, and the condensation plate adopts a plug-in ice crystal cooling module.

[0058] Referring to Figure 6 , Figure 6 for Figure 1 The schematic diagram of the heater and its arrangement of the embodiment shown. The top of the box 1 is provided with two-stage or three-stage heaters 4. Each stage of the heater includes a group of heating wires. The temperature control associated with the flavoring control is designed as two-stage or three-stage heating. The multi-stage heating can flexibly adjust the power of each stage according to actual needs. Before the tea dryer starts to work, the staff can set the heating programs and parameters such as heating temperature, heating time, temperature rising rate, fan gear, and electric heating frequency conversion through the controller 5. During the working process of the tea dryer, the temperature and humidity values collected by the multiple temperature and humidity collectors in the box 1 are transmitted to the controller 5, which is adjusted by the staff according to the actual situation.

[0059] In order to reduce the influence of the number of door openings on the quality of tea, the front of the box 1 is designed as three independent doors, which can accurately control the opening area and greatly reduce the adverse effects on other space tea. At the same time, the top of the box 1 is also provided with a driving motor and a worm, and the worm and the support structure are connected through a triangular connecting piece. The driving motor drives the multi-layer support structure 8 to rotate through the worm. Before the tea dryer starts to work, the staff can set the rotation angle of the worm through the program of the controller 5, so that the tea is not blocked by the triangular support when the door is opened, and the tea tray is smoothly taken out, reducing unnecessary door openings, and at the same time realizing energy saving and environmental protection.

[0060] Embodiment three

[0061] Embodiment 3 shows a vertical flavoring type tea drying device according to the present application.

[0062] Referring to Figure 1 , Figure 1It is a structure diagram of the whole inside of the vertical tea leaf drying device in an embodiment of the present application. The vertical tea leaf drying device comprises a box body 1, the top of the box body 1 is provided with a fresh air input device, a heat regenerator 2, an electric heater 3, a circulating fan 4, an air flow control valve (not shown in the figure) and a dehumidification plate 6. The rear vertical surface and the left and right vertical surfaces of the box body 1 are respectively provided with a first vertical air duct plate 701 and a second vertical air duct plate 702, the rear vertical surface, the left vertical surface and the first vertical air duct plate 701 constitute a first air chamber, and the rear vertical surface, the right vertical surface and the second vertical air duct plate 702 constitute a second air chamber. A controller 5 is arranged on the side vertical surface of the box body 1, and the controller 5 is used for setting and adjusting parameters, the parameters including the heating temperature, humidity and heating time inside the box body 1, the fan gear, and the electric heating frequency conversion. A plurality of temperature and humidity acquisition devices are further arranged inside the box body 1, and the temperature and humidity acquisition devices are used for acquiring the temperature and humidity of each area inside the box body 1. A temperature and humidity monitor is arranged on the top or the side vertical surface or the front surface of the box body 1, so as to facilitate the staff to observe the working temperature inside the box body 1. The temperature and humidity acquisition devices are electrically connected with the controller 5 and the temperature and humidity monitor.

[0063] Referring to Figure 2 , Figure 2 for Figure 2 an embodiment of the present application, a top view schematic diagram of the tea leaf tray and the air duct plate is shown. The vertical air duct plate 701 and 702 are perpendicular to the bottom surface of the box body 1, and the angle between the vertical air duct plate and the rear vertical surface and the side vertical surface of the box body 1 is 45°, the projection of the vertical air duct plate 701 or 702 on the bottom surface of the box body 1 and the rear vertical surface and the side vertical surface of the box body 1 form an isosceles right triangle. The vertical air duct plate 701 or 702 is fixedly arranged in the box body 1 in an integrated manner, for example, by welding, riveting or other conventional methods.

[0064] The pipes for connecting the fresh air input device, the air flow control valve (not shown in the figure), the heat regenerator 2, the heater 3 and the circulating fan 4 are all hollow pipes. The circulating fan 4 delivers the heated air flow to the second air chamber through the hollow pipes, and the air flow in the second air chamber is delivered to the tea leaf heating chamber through the air supply holes 703 on the second air duct plate 702. The number of the air supply holes of the air duct plate can be unevenly distributed, and can be set according to the distance between the air duct plate 702 and the hollow pipe, so as to balance the air flow resistance by changing the number of the holes, and ensure that the upper and lower tea leaf trays are evenly heated, and the smaller the temperature difference in each area inside the box body is, the better the flow channel arrangement is.

[0065] Referring to Figure 3 , Figure 3C shows that the vertical air duct plate 701, 702 is arranged on the uneven distribution of the air supply hole 703, the hollow pipe is arranged in the middle of the box 1, the number of air supply holes of the vertical air duct plate 701, 702 is less in the central region than in the peripheral region.

[0066] Because the support device 8 of the tea tray is driven by the worm to rotate clockwise, the heated airflow, i.e. hot air, is transported into the box 1 from the second air chamber through the air supply hole 703 on the second air duct plate 702, and cooperates with the rotating tea tray to form a rotational flow of hot air on the tea, changes the air supply flow angle, and the airflow angle after the recombination is 35-40°. After the rotation of the air supply angle and the air flow driven by the rotation of the tea tray, the air supply realizes uniform heating on the tea, and because the speed of the outer edge and the central region of the tea tray is different, the pressure formed on the tea tray guides the moisture evaporated from the tea to the outer edge and finally enters the return air duct through the left air chamber, and then enters the heater, thereby realizing the circulation of the hot airflow. In this way, according to the law of fluid mechanics, the airflow containing moisture after heating is guided to the first air chamber in the same direction as the rotation of the worm, avoiding the difference in heating and water content caused by the upward flow of water vapor after heat and mass transfer, which can minimize the upward flow of steam, realize the technical effects of stable moisture content between layers and uniform heating.

[0067] The included angle between the air supply plate and the rear vertical surface of the box 1 is β, which is an acute angle, and the angle of the included angle is preferably 60°. By making the airflow of the air supply hole 703 and the tea tray cooperate to form a rotational flow of hot air on the tea, uniform heating is realized, and the technical effects of stable moisture content between layers and uniform heating are achieved. The box 1 is also provided with a plurality of temperature and humidity collection devices inside, for real-time monitoring of the temperature and humidity changes of each part in the box 1.

[0068] Referring to Figure 5 , Figure 5 for Figure 1The structure diagram of the heater and its arrangement of the embodiment shown. The air flow in the box 1 is circulated and then discharged through the return air duct, and is delivered to the humidity monitor and the air flow control valve outside the box 1 in turn. When the humidity exceeds the set value, the air flow is discharged through the air flow control valve, the fresh air input device is started, the air flow is exchanged with the fresh air to recover the heat after the humidity is discharged, and then the air flow is delivered to the heater 3, and then the air flow is delivered to the air supply duct into the box 1 through the circulating fan 4. When the humidity is lower than the set value, the control valve is closed, and the air flow directly flows through the heater 3 and then enters the circulation again. The dehumidifier 6 is installed on the connecting duct of the return air duct and the heater 3. The water vapor in the circulating air is condensed to form condensed water when it is cooled, which reduces the water content and the fragrance gas discharge, greatly retains the aroma of tea leaves, and effectively improves the quality of tea baking. The dehumidification plate 6 selects a condensation plate, and the condensation plate adopts a plug-in ice crystal cooling module.

[0069] Referring to Figure 6 , Figure 6 for Figure 1 The structure diagram of the heater and its arrangement of the embodiment shown. The top of the box 1 is provided with two-stage or three-stage heaters 4. Each stage of the heater includes a group of heating wires. The temperature control associated with the flavoring control is designed as two-stage or three-stage heating. The multi-stage heating can flexibly adjust the power of each stage according to the actual demand. Before the tea dryer starts to work, the staff can program and parameterize the heating programs such as heating temperature, heating time, and heating rate through the controller 5. In the working process of the tea dryer, the temperature and humidity values collected by the multiple temperature and humidity collectors in the box 1 are transmitted to the controller 5, which is adjusted by the staff according to the actual situation.

[0070] In order to reduce the influence of the opening times on the quality of tea, the front of the box 1 is designed as three independent doors, which can accurately control the opening area and greatly reduce the adverse effects on the tea in other spaces. At the same time, the top of the box 1 is also provided with a driving motor and a worm, and the worm and the support structure are connected through a triangular connecting piece. The driving motor drives the multi-layer support structure 8 to rotate through the worm. Before the tea dryer starts to work, the staff can program the rotation angle of the worm through the controller 5, so that the tea is not blocked by the triangular support when the door is opened, and the tea tray is smoothly taken out, reducing unnecessary opening times, and achieving energy saving and environmental protection at the same time.

[0071] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vertical tea drying device, comprising a box body (1), the top of the box body (1) is provided with a fresh air input device, a heat regenerator (2), an electric heater (3), a circulating fan (4), an airflow guide control valve, and the inside of the box body (1) is further provided with a first vertical air duct plate (701) and a second vertical air duct plate (702), the rear vertical surface and the left vertical surface of the box body (1) and the first vertical air duct plate (701) form a first air chamber, and the rear vertical surface and the right vertical surface inside the box body (1) and the second vertical air duct plate (702) form a second air chamber.

2. The vertical tea drying device according to claim 1, wherein the inside of the box body (1) is further provided with a multi-layer support structure (8).

3. The vertical tea drying device according to claim 1, wherein the first vertical air duct plate (701) and the second vertical air duct plate (702) are perpendicular to the bottom surface of the box body (1) and form an angle of 30-60° with the rear vertical surface of the box body (1), and the first vertical air duct plate (701) and the second vertical air duct plate (702) are provided with air supply holes (703).

4. The vertical tea drying device according to claim 1, wherein the angle between the first vertical air duct plate (701) and the second vertical air duct plate (702) and the rear vertical surface of the box body (1) is 30°, 35°, 40°, 45°, 50°, 55° or 60°.

5. The vertical tea drying device according to claim 3, wherein the number of air supply holes (703) of the air duct plate is uniformly or non-uniformly distributed, and optionally, the number of air supply holes (703) is less in the upper part than in the lower part.

6. The vertical tea drying device according to claim 3, wherein the circulating fan (4) delivers the heated airflow to the second air chamber through a hollow pipe, and the airflow in the second air chamber is delivered to the tea heating chamber through the air supply holes (703) on the second vertical air duct plate (702).

7. The vertical tea drying device according to claim 2, wherein the top of the box body (1) is further provided with a driving motor and a worm, the worm and the support structure are connected through a connecting piece, the driving motor drives the multi-layer support structure (8) to rotate through the worm and the connecting piece, and the multi-layer support structure (8) is composed of a plurality of circular ring pipes fixedly connected to a semi-cylindrical support composed of a semi-circular ring as the upper and lower bottoms and three side edges connected to the upper and lower bottoms.

8. The vertical tea drying device according to claim 1, wherein the top of the box body (1) is provided with two or three levels of electric heaters (3), and each level of electric heater (3) comprises a group of heating wires.

9. The vertical tea drying device according to claim 1, wherein a controller (5) is arranged on the side vertical surface or the front surface of the box body (1), the controller (5) is used for setting and adjusting parameters, the parameters include the heating temperature, humidity, heating time, fan gear and thermal frequency adjustment in the inside of the box body (1), a plurality of temperature and humidity collection devices are arranged in the inside of the box body (1), and a temperature and humidity monitor is arranged on the top or the side vertical surface or the front surface of the box body (1) to facilitate the staff to observe the working temperature in the box body (1).

10. The vertical tea drying device according to claim 1, wherein the air flow circulating in the box (1) is discharged through a return air duct, a dehumidification plate (6) is installed on the return air duct and the connecting duct of the heater (4), and the dehumidification plate (6) is a condensation plate adopting a plug-in ice crystal cooling module.

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