CN-121970819-A - Jasmine tea scenting method and equipment based on interlayer temperature difference and aroma circulation flow

CN121970819ACN 121970819 ACN121970819 ACN 121970819ACN-121970819-A

Abstract

The invention discloses a jasmine tea scenting method and equipment based on interlayer temperature difference and aroma circulation flow. The method comprises the steps of spreading jasmine flowers and tea leaves in a first cavity and a second cavity which are mutually separated, controlling the temperature of the first cavity to be 30-40 ℃, controlling the temperature of the second cavity to be 5-10 ℃ to form a remarkable temperature difference, cooling aromatic substances in the first cavity through circulating airflow, sending the cooled aromatic substances into the second cavity to suck the tea leaves, and sending the heated gas in the second cavity into the first cavity for airflow circulation after the circulating airflow is used for pumping and heating the gas in the second cavity. The invention adopts proper temperature and circulating air flow to promote jasmine flower fragrance, reduce the amount of flowers, controls the second chamber to promote tea fragrance absorption by a condensation principle on the premise of keeping the color and taste of tea under a low-temperature environment, reduces the problem that the tea fragrance is easy to emit after being absorbed, and solves the problem that the flowers and the tea are easy to heat in accumulation by the interlayer and the circulating air flow, and can improve the fragrance utilization rate.

Inventors

WEI RAN
SU ZHUCHENG
Fang Qiting
HE MEIXUAN
Qin Fangting
ZHONG XIAOYU

Assignees

浙江农林大学

Dates

Publication Date: 20260505
Application Date: 20260203

Claims (10)

1. A jasmine tea scenting method based on interlayer temperature difference and aroma circulation flow is characterized by comprising the following steps: 1) The jasmine flower tea processing method comprises the steps of spreading jasmine flowers in a first chamber, spreading tea leaves in a second chamber, and separating the first chamber from the second chamber, wherein the first chamber and the second chamber are communicated only through a gas circulation pipeline; 2) The temperature of the first chamber is controlled to be 30-40 ℃ so that jasmine fragrance in the first chamber can be spitted, and the jasmine fragrance leaves the first chamber along with circulating air flow and enters a refrigerator for cooling, and then enters the second chamber; 3) Controlling the temperature in the second chamber to be 5-10 ℃, condensing and adsorbing jasmine fragrance by the tea in the second chamber, enabling the non-adsorbed fragrance components to leave the second chamber along with the circulating air flow and enter the air heater for heating, enabling the heated circulating air flow to return to the first chamber for realizing gas circulation, and enabling the heated circulating air flow to be saturated until the tea is saturated with fragrance.
2. The jasmine tea scenting method based on interlayer temperature difference and aroma circulation flow of claim 1, wherein the volume of the second chamber is 5-8 times that of the first chamber, the volume flow of circulating gas in the gas circulation pipeline is a constant value, and the gas flow rate in the second chamber is smaller than that in the first chamber.
3. The jasmine tea scenting method based on interlayer temperature difference and aroma circulation flow of claim 1, wherein the refrigerator reduces the temperature of circulating gas to 5-10 ℃, the air heater heats the circulating gas to 30-40 ℃, and a fan is arranged on a gas circulation pipeline and is used for providing power for conveying the circulating gas.
4. The jasmine tea scenting method based on interlayer temperature difference and aroma circulation flow according to claim 1, wherein a water mist spray head for increasing humidity is arranged in the first chamber, the water mist spray head is connected with a water storage tank outside the first chamber through a water spraying pipeline, a temperature and humidity sensor is further arranged in the first chamber, and the water mist spray head sprays the water into the first chamber to control the humidity in the first chamber to be maintained to be more than 75%.
5. The jasmine tea scenting method based on interlayer temperature difference and aroma circulation flow of claim 1 is characterized in that a plurality of layers of object placing trays are arranged in the first chamber and the second chamber, meshes are uniformly formed in the bottom surface of each object placing tray, fresh jasmine flowers are laid in each object placing tray of the first chamber, and tea leaves are laid in each object placing tray of the second chamber.
6. The jasmine tea scenting method based on interlayer temperature difference and aroma circulation flow of claim 1, wherein a flower chamber air outlet is formed in the side wall of the bottom of the first chamber, the flower chamber air outlet is connected with the refrigerator through a pipeline, a plurality of flower chamber air outlet nozzles are formed in the side wall and the top of the first chamber, and a circulating air flow is distributed to each flower chamber air outlet nozzle through a pipeline and a branch air flow passage by an air heater outlet.
7. The jasmine tea scenting method based on interlayer temperature difference and aroma circulating flow of claim 1, wherein a tea chamber air outlet is formed in the side wall of the bottom of the second chamber, the tea chamber air outlet is connected with the inlet of the air heater through a pipeline, a plurality of tea chamber air outlet nozzles are arranged on the side wall and the top of the second chamber and used for spraying circulating air flow with jasmine aroma, and a refrigerator outlet is connected with each tea chamber air outlet nozzle through a pipeline and a branch air flow passage.
8. The jasmine tea scenting method based on interlayer temperature difference and aroma circulation flow of claim 1, wherein temperature control devices are further arranged in the first chamber and the second chamber, the temperature control devices in the first chamber are used for maintaining the temperature of the first chamber at 30-40 ℃, and the temperature control devices in the second chamber are used for maintaining the temperature of the second chamber at 5-10 ℃.
9. An apparatus for carrying out the method of any one of claims 1-8, wherein the apparatus comprises a cabinet, a refrigerator and a hot air blower, wherein the cabinet is provided with a first chamber and a second chamber which are independent from each other; The multi-layer storage tray is arranged in the first chamber and used for tiling fresh jasmine flowers, the multi-layer storage tray is arranged in the second chamber and used for tiling tea leaves, an air outlet of the first chamber is connected with an inlet of a refrigerator through a gas circulation pipeline, an outlet of the refrigerator is connected to each air outlet nozzle in the second chamber through a pipeline, an air outlet of the second chamber is connected with an inlet of an air heater, an outlet of the air heater is connected to each air outlet nozzle in the first chamber through a gas circulation pipeline, the air outlet nozzles of the first chamber and the second chamber are used for injecting circulating air flow into the corresponding chambers, the circulating air flow leaves from the air outlets of the corresponding chambers, and the circulating air flow circularly flows between the first chamber and the second chamber through the gas circulation pipeline and is cooled in the refrigerator and heated in the air heater.
10. The device according to claim 9, further comprising a control module, wherein a temperature control device and a water mist spray head are arranged in the first chamber, wherein the water mist spray head is connected with a water storage tank outside the first chamber through a water spray pipeline, and a cooling coil is further arranged in the second chamber; the control module acquires temperature and humidity signals detected by temperature and humidity sensors in the first chamber and the second chamber in real time, the temperature of the first chamber is maintained at 30-40 ℃ and the humidity is maintained at more than 75% by controlling the opening and closing of a temperature control device and a water mist spray head in the first chamber, and the temperature of the second chamber is maintained at 5-10 ℃ by controlling the temperature control device in the second chamber.

Description

Jasmine tea scenting method and equipment based on interlayer temperature difference and aroma circulation flow Technical Field The invention belongs to the technical field of tea processing, and particularly relates to a jasmine tea scenting method and equipment based on interlayer temperature difference and fragrance circulation flow. Background Jasmine tea is a reprocessed tea product obtained by adsorbing volatile aroma components released by jasmine flowers by tea leaves. The jasmine tea is prepared by adopting a scenting technology, and scenting adopts a mode of fully absorbing fragrance by mixing tea blanks and fresh flowers, standing, separating and drying to obtain a finished product, and the principle is mainly based on the porous structure of tea and the adsorption characteristic of fragrance component substances, and realizing tea fragrance and flower fragrance blending by means of moisture transfer. The traditional scenting method is to directly mix jasmine flowers and tea leaves, in this way, the mixed material pile can generate heat in the scenting process, and needs to be turned over frequently to dissipate heat, so that the life cycle of the jasmine flowers is seriously influenced, in addition, aroma components are easy to volatilize at a higher temperature and are difficult to be absorbed by the tea leaves, the tea leaves and the flowers are piled and contacted for a long time, the appearance and the soup color of the tea leaves are easy to yellow, and the strip rope is loose. In consideration of the heat dissipation problem, there is also a process of scenting the flowers and the tea under the condition of lower temperature after the mixing, however, under the condition of low temperature, the metabolism of the jasmine is weak, so that the fragrance-emitting capability of the jasmine is poor. Disclosure of Invention The invention aims to overcome the defects of the prior art and provides a jasmine tea scenting method and equipment based on interlayer temperature difference and fragrance circulation flow. In order to achieve the above purpose, the invention provides a jasmine tea scenting method based on interlayer temperature difference and aroma circulation flow, which comprises the following steps: 1) The jasmine flower tea processing method comprises the steps of spreading jasmine flowers in a first chamber, spreading tea leaves in a second chamber, and separating the first chamber from the second chamber, wherein the first chamber and the second chamber are communicated only through a gas circulation pipeline; 2) The temperature of the first chamber is controlled to be 30-40 ℃ so that jasmine fragrance in the first chamber can be spitted, and the jasmine fragrance leaves the first chamber along with circulating air flow and enters a refrigerator for cooling, and then enters the second chamber; 3) Controlling the temperature in the second chamber to be 5-10 ℃, adsorbing jasmine fragrance by the tea in the second chamber, enabling the non-adsorbed fragrance components to leave the second chamber along with the circulating air flow and enter the air heater for heating, and enabling the heated circulating air flow to return to the first chamber to realize gas circulation until the tea is saturated in fragrance absorption. In a second aspect, the invention provides equipment for implementing the method, which comprises a cabinet body, a refrigerator and a hot air blower, wherein the cabinet body is internally provided with a first chamber and a second chamber which are mutually independent; The multi-layer storage tray is arranged in the first chamber and used for tiling fresh jasmine flowers, the multi-layer storage tray is arranged in the second chamber and used for tiling tea leaves, an air outlet of the first chamber is connected with an inlet of a refrigerator through a gas circulation pipeline, an outlet of the refrigerator is connected to each air outlet nozzle in the second chamber through a pipeline, an air outlet of the second chamber is connected with an inlet of an air heater, an outlet of the air heater is connected to each air outlet nozzle in the first chamber through a gas circulation pipeline, the air outlet nozzles of the first chamber and the second chamber are used for injecting circulating air flow into the corresponding chambers, the circulating air flow leaves from the air outlets of the corresponding chambers, and the circulating air flow circularly flows between the first chamber and the second chamber through the gas circulation pipeline and is cooled in the refrigerator and heated in the air heater. According to the embodiment of the invention, the device further comprises a control module, wherein a temperature control device and a water mist spray head are arranged in the first cavity; the control module acquires temperature and humidity signals detected by temperature and humidity sensors in the first chamber and the second chamber in real time, the temperatur