JPS5971644A - Steaming of raw tea leaf - Google Patents

Abstract

PURPOSE:To prevent damage of tea leaves, and occurrence of moisture condensation on the tea leaves, etc., by heating steam to be fed by a steamer of the fresh tea leaves, followed by sending it to the steamer. CONSTITUTION:Steam to be fed to the steamer 4 is heated by the steam heating chamber 1 arranged above the combustion chamber 12 of propane gas. Namely, steam having about 0.0036-0.00089 fraction of vaporization generated by a boiler is introduced from the pipe 2 to the steam heating chamber 1 and heated in such a way that it has about 0.15-0.18 fraction of vaporization and about 81-97Kcal/kg latent heat. It is fed through the pipes 31-33 to the steaming chamber 4 (the signal 10 is a rotary net barrel, 7 is guide blade, 8 is tea leaf sending member, and 9 is rotating shaft).

Description

[Detailed Description of the Invention] The latent heat of the tea leaves is approximately μkcItll/, ~2 kd/, etc., and the steaming of raw tea leaves is similar to boiling rather than steaming, resulting in a decrease in the roughening effect and the pain of tea confectionery. , an increase in the amount of steam supplied to the steamer, and a reduction in the boiler cost [using more than necessary].
In addition, there is a lot of steamed dew attached to the steamed tea leaves, and a mechanical device is required to remove the steamed dew before moving to the next process, which is the coarse rolling process.

In this invention, steam with low dryness and low latent heat generated in a boiler is guided to a heater to heat raw tea leaves and supply it to a steamer.

C2) To understand the heating of steam by the increase in steam specific volume, the diameter of the steam supply pipe to the steamer after heating is made proportional to the increase in specific volume, and the flow rate of water and steam entering the steamer is increases the amount of steam heat supplied at the same rate as before heating, and improves the state of complete steaming of raw tea leaves, freedom of steaming degree, enhancement of aroma of steamed leaves, drastic reduction of damage to steamed tea leaves, tea production evaluation, and tea production process. This improved the water retention capacity and effectively utilized the amount of steam heating.

(3) For the steaming chamber of the steamer, which is open to the atmosphere, multiple steam supply pipes are connected in the direction of flow of the tea in order to uniformly supply the supplied steam to the steaming chamber and to ensure the effectiveness of steaming. They are arranged at equal intervals, and the steam flow port structure into the steaming chamber is also designed to maximize the effectiveness of steam.

(4), Steam heat generated in the boiler to, 2ktd/
The amount of heat heated with a steam heater is / r / kcal / 9 ~ "kcall / 9 is water 0 specific heat ha (' kcnl / 9 C% water vapor constant volume Considering the specific heat of 0.4Q kd/ and c, the energy saving rate by steam heating is approximately jO
reach %.

151, +11~(4) There is no steaming dew attached to the steamed tea leaves discharged from the steamer, and the tea leaves can be directly fed into the rough rolling machine for the next process.

To explain with the following diagram, the combustor in the steam heater +11 of this invention uses propane, which is easy to adjust, as a heat source, and the bottom of the steam heater has a wavy uneven surface.
In addition to increasing the heat transfer area, the Pronokun heating effect has been improved.

Steam supplied from a boiler (not shown) is piped +2
1'i, enters the steam heater (1), and while flowing through the heater, it is heated, expands, and becomes dryer.

The steam heated by the steam heater (1) is transferred to a plurality of steam feed pipes (31, # (31t
1 f31s--- is steamed and fed to the steamer (4).

The plurality of steam supply pipes (3), +31.1 +31
．． --- and the steaming chamber (5) of the steamer (41) are connected to each other in order to improve the steam utilization effect based on the structure of the steaming chamber that is open to the outside air, and to improve the steaming effect of raw tea leaves. Feed pipe (3) e (3).

+31. --- The flow direction of the steamed tea confectionery was placed at a position corresponding to the length of the steaming chamber (51).

A steam distribution and feeding mechanism (6) is provided in the steaming chamber (5), and a guide blade f of the steam distribution and feeding mechanism (6) is provided.
711 (Through 71-11, it is uniformly flowed into the steaming chamber (5).

The guide vanes (7) and (71--1) are attached to a plurality of tea and confectionery feeding hands and stirring hands (8)e.+81----- are installed so as to protrude in the direction of rotation of the rotating shaft +91, and are installed to prevent steam from entering the steaming chamber. Prevents crowds of tea and sweets from flowing into the opening.

The raw tea leaves put into the steamer (41) from the input port OQ are
The confectionery is sent into the steaming chamber (5) by the sender and stirrer 1811181, steamed, and transferred to the next rotating mesh drum 1111.
It is transferred inside, cooled and discharged to the outside.

In the drawing, +12 is the propane combustor, vJ is the heater lμ3 is the bottom of the heater (1) (14 wavy uneven surface, QS
, t (15, indicates a thermometer, αG indicates a chimney, and a sword indicates a drain pipe.

As mentioned above, this invention has solved most of the problems 1e) desired for steaming raw tea leaves, which could not be achieved with conventional machines and devices.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the arrangement of one embodiment of the present invention, and FIG.
FIG. 3 of the book shows a sectional view taken along line II-II and line II-II of FIG. 1. In the figure, (1) is a steam heater, +21 is a pipe, (3) 1
1 (31!+f31.-m- is steaming steam≠feeding pipe,
(4) is the steamer, (51 is the steaming chamber, (6) is the steam distribution and feeding mechanism, (7) is the guide blade, (8) is the tea leaf feeder/stirring hand, (9) is the rotating shaft, and Qll is Showing the rotating mesh barrel. Figure 3.

Claims (1)

[Claims] A heater is installed to heat the steam and its dryness is 0.16.
By increasing the latent heat per unit weight with ~o, tr, and understanding the heating of steam by increasing the specific volume (expansion) of steam, Depending on the feeding method, the main mechanism of the steamer is adapted to the steam state after steam heating, and the steaming effect of raw tea leaves is improved.