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Heat pump tobacco leaf bulk curing barn capable of alternately operating airflow

A technology of alternating operation and intensive curing room, applied in the directions of tobacco, tobacco preparation, application, etc., can solve the problems of browning of tobacco leaves upstream of the airflow, inconsistent grades of tobacco leaves in the upper and lower sheds, insufficient yellowing of tobacco leaves, etc., to achieve dehydration speed and yellowing. The effect of maintaining the degree and solving the different speed of yellowing and dehydration of tobacco leaves

Pending Publication Date: 2021-08-17
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects and problems existing in the existing equipment, the present invention provides a heat pump tobacco leaf intensive curing barn with alternating airflow, which effectively solves the problem that the single airflow circulation in the existing equipment easily causes inconsistent grades of the baked tobacco leaves in the upper and lower sheds. , it is prone to the problem of browning of tobacco leaves upstream of the airflow or insufficient yellowing of tobacco leaves downstream of the airflow

Method used

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  • Heat pump tobacco leaf bulk curing barn capable of alternately operating airflow
  • Heat pump tobacco leaf bulk curing barn capable of alternately operating airflow
  • Heat pump tobacco leaf bulk curing barn capable of alternately operating airflow

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Embodiment 1

[0032] Embodiment 1: This embodiment aims to provide a heat pump tobacco leaf intensive curing barn with alternating airflow operation, which mainly aims at the defects existing in the existing single airflow cycle, which may easily cause the tobacco leaves to turn yellow and dehydrate at different speeds, and the tobacco leaves in the upper and lower sheds are not suitable for curing. It is difficult to take care of the problems. This embodiment provides a heat pump tobacco leaf intensive curing barn with multiple airflow cycles running alternately.

[0033] Such as Figure 1-5 As shown in , this embodiment mainly provides a heat pump tobacco leaf intensive curing barn with alternating airflow, which specifically includes a tobacco loading room 1, a heating room 2, an alternate switching device and a control system; wherein the tobacco loading room 1 is provided with a horizontal Hanger, the tobacco leaves are hung on the hanger, which occupies the main area of ​​the barn, th...

Embodiment 2

[0042] Embodiment 2: This embodiment is basically the same as Embodiment 1, the difference is that this embodiment further explains the heating air duct.

[0043] The upper and lower sides of the bracket are provided with a blocking plate 11, and the blocking plate 11 wraps the air inlet end of the fan 14, the auxiliary heating wire 17 and the condenser 16 to form a heating air duct 12; Figure 1-3 As shown in , the blocking plate 11 is an arc-shaped structure or a straight-line structure.

[0044] The heating channel 12 of this embodiment is a closed channel, thereby preventing the hot air from being scattered in the heating chamber 2, improving the utilization rate of the hot air, and avoiding the influence of the hot air at the return air port on the return air, so that the heating chambers outside the heating channel are in a relatively low pressure state , to facilitate gas circulation.

Embodiment 3

[0045] Embodiment 3: This embodiment is basically the same as Embodiment 1, and the difference is that this embodiment adds a middle circulating air loop.

[0046] In this embodiment, the upper electric push rod and the lower electric push rod are respectively controlled by the controller, and the upper electric push rod and the lower electric push rod act synchronously. An air valve 27 is provided, and the valve plate inside the air valve 27 is controlled by a motor to turn over. This is an existing structure and will not be described in detail, and the motor is connected to the controller.

[0047] Thereby the present embodiment increases the circulation loop in the middle part on the basis of Embodiment 1, heat is supplied from the middle part, and the upper and lower ends return air; the embodiment has three working modes, one of which is an upwind circulation mode, and the other is an upwind circulation mode. Downwind circulation mode, the third is the circulation mode of...

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Abstract

The invention belongs to the technical field of tobacco leaf curing, and particularly relates to a heat pump tobacco leaf bulk curing barn capable of alternately operating airflow, an air source heat pump is used as a main heat source, an auxiliary heating wire is used for auxiliary heating, a heat source is generated in a heating chamber, the heat source is blown into an air inlet duct by a fan, and under the switching of an alternate switching device, automatic switching of upward air circulation and downward air circulation is achieved, different switching durations can be set according to different periods of tobacco leaf curing by taking the temperature difference between the upper portion and the lower portion in the tobacco containing chamber and the delayer as starting signals during switching, and the situation that tobacco leaves at the same position are located at the upstream or the downstream of airflow in the whole curing period is avoided; the dehydration speed and the yellowing degree of the tobacco leaves in upper and lower greenhouses are kept relatively consistent, the problems that the tobacco leaf yellowing dehydration speed is different and the baking quality of the tobacco leaves in upper and lower greenhouses is difficult to consider in the existing equipment and process are effectively solved, and the curing barn is low in cost and high in energy utilization rate and has huge economic, environmental and social benefits.

Description

technical field [0001] The invention belongs to the technical field of tobacco leaf curing, and in particular relates to a heat pump tobacco leaf intensive curing barn with alternating air flow. Background technique [0002] Tobacco leaf curing is a key link in tobacco production. The quality of tobacco leaf curing is directly related to the flavor and grade of cigarettes. Tobacco leaf intensive curing room is the carrier of tobacco leaf curing technology and is very important to ensure the quality of tobacco leaf curing. [0003] At present, there are two forms of airflow up and airflow down in our country’s tobacco leaf intensive curing barn, both of which use circulating fans to perform forced ventilation in the barn, suck the dry and cold air in the environment into the heating room, and send it into the tobacco loading room after heating. And the water vapor evaporated from the tobacco leaves is brought to the environment, and the tobacco leaves are roasted in this cycl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/10
CPCA24B3/10
Inventor 李赫牛潇潇郭长乐柴嘉君赵弋秋程上上徐一高
Owner HENAN AGRICULTURAL UNIVERSITY
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