JPS6235344Y2 - - Google Patents

Description

[Detailed description of the invention] A. Industrial application field This invention expels the high temperature or high temperature and humidity air inside the tea machine room to the outside, and exchanges heat with the outside air using exhaust heat and an air heating device such as a combustor. The present invention relates to a hot air generation/ventilation device for a closed tea making machine which returns the hot air to the tea making machine room and ventilates the air inside the tea making machine room.

B. Conventional technology Conventional air ventilation includes natural ventilation and forced ventilation. Forced ventilation using a ventilation blower is generally performed in factories and the like where tea-making machines are installed. In addition, for tea manufacturing and drying, there is a hot air generating device that uses oil or gas to dry products with high moisture content.

C. Problems to be solved by the invention The hot air is generated using a furnace that heats the air directly or indirectly, which has the disadvantage of being large and increasing the equipment cost, and when oil is used as fuel, the oil contaminates the tea leaves. In particular, because the temperature is high, there is a risk that the odor will dissolve into the tea leaves and may not disappear or deteriorate. In addition, the indoor temperature at the tea factory is 30 to 40℃.
Unless you work while maintaining a certain temperature, you will not be able to obtain a high-quality product.

However, in order to use forced ventilation using the above-mentioned ventilation blower, even though the room temperature is kept at an appropriate temperature and the work continues, it becomes hot and humid and when ventilation is performed, the hot air that has become high temperature is forcibly removed to the outside, and reducing outside air is brought in, which lowers the indoor temperature, spoils the scent and color of the tea leaves, and causes deterioration of quality, and furthermore, energy is lost.

D. Means for solving the problem The hot and humid air inside the room is exhausted to the outside through the blower and the exhaust duct of the heat exchange room, while the outside air drawn in from the outside air duct is heat exchanged in the heat exchange room, and then this air is returned to the inside of the room. The air is heated by the air blower through the connecting duct of the heating chamber, and is then fed into the machine room through the reduction duct, allowing ventilation without lowering the indoor temperature, and the amount of heat from the hot air being exhausted is recovered. It can be preheated.

E. Effect To ventilate a sealed machine room, start the suction blower, supply blower, and burner in the heating chamber in the ventilation system, and adjust the opening degree of the outside air intake valve mechanism to lower the temperature inside the machine room from the suction blower. , high-temperature and humid air is introduced into the closed room of the hot air generation ventilation system through the suction duct, and this air is expelled to the outside from the exhaust duct via the communication duct by the suction blower. On the other hand, outside air introduced into the heat exchange chamber from the intake valve mechanism through the outside air intake duct absorbs heat by exchanging heat with exhaust heat while meandering through the outside air passage provided in the exhaust duct in the heat exchange chamber. , which is discharged indoors through a discharge duct.

In addition, this discharged air is sent from the air supply blower installed in the connecting duct to the discharge port in the machine room through the reduction duct together with the indoor air.
While passing through this connecting duct, it is further heated by combustion gas from the burner in the heating chamber and is fed, and this is done continuously to provide ventilation.

In addition, ventilation is performed by adjusting the angle of the valve mechanism provided in the outside air suction duct to arbitrarily set the degree of pressure reduction inside the sealed machine room and the amount of air to be ventilated.

Embodiment 1 is a hot air generation device having a sealed chamber 2. Inside this chamber 2, a heat exchange chamber 3 and a heating chamber 4 are provided, and one heat exchange chamber 3 has a suction blower 5 and a communication duct 6. and the outside air passage 7.
A large number of exhaust ducts 8 are provided, and an exhaust duct 8 with its upper end protruding outside the room is built-in. Furthermore, the heat exchange chamber 3 has an outside air suction duct 9 connected to the upper side and an outside air discharge duct 10 that discharges the outside air sucked into the chamber 2 at the lower side, and the air taken in from the outside air suction duct 9 is connected to the inside. Partition pieces 11 for meandering are provided alternately.

In addition, the other heating chamber 4 has a burner 12 at the bottom.
A combustion port 13 with a flame duct 16 is connected to the upper part, a chimney 14 for discharging combustion gas is connected to the upper part, and a connecting duct 17 with a blower 15 and a flame duct 16 is installed in the lower part. Partition pieces 18 for meandering the combustion gas combusted by the burner 12 are provided alternately in the chimney 14, and the combustion gas is meandered through the flame duct 16 while exchanging heat with the air passing through the connection duct 17 to heat the chimney 14. It is designed to release exhaust gas from the The upper part of the connection duct 17 is connected to the reduction duct 21 connected to the discharge port 20 in the sealed tea machine room 19, and the inside of the hot air generation ventilation device 1 is connected to the intake port 22 in the machine room 19 and the intake port 22 in the machine room 19. They are connected by a duct 23. The outside air intake duct 9 is provided with an outside air intake valve mechanism 24.
Tea making machine room 1 sealed by adjusting the
9 and adjust the amount of air to ventilate the valve mechanism 2.
As the opening degree of No. 4 is reduced, the pressure inside the machine room can be brought to a reduced pressure state lower than atmospheric pressure.

In the figure, 25 is a wire mesh provided at the exhaust port of the exhaust duct 8. 26 is a regulating valve for the burner 12, and a temperature regulator 27 is provided on the discharge port side of the reduction duct 21.
I have contacted you.

G. Effects of the invention As mentioned above, the present invention has been developed in closed tea manufacturing machines such as a tea coarsening machine, a tea medium softening machine, a tea fine softening machine, and a tea drying machine, by converting high temperature or hot and humid air in a sealed room into hot air. The hot air is introduced into the closed room of the generation ventilation system and removed through the blower and exhaust duct built into the heat exchange room.The outside air from the outside air intake duct is heat exchanged with the exhaust heat, and then the hot air is sent to the hot air generation ventilation system using the blower. The hot air is heated by the combustion gas from the burner in the heating chamber together with the air in the room, thereby supplying hot air into the sealed tea making machine room and ventilating the air inside the tea making machine. In other words, the amount of heat is recovered from the hot air exhausted from the closed machine room, and the outside air is heated using this amount of heat and the fuel gas from the burner, and this is then supplied into the room, so the work can be done without the temperature drop due to ventilation of the machine room. The current temperature can be maintained, there is no harm to the work due to ventilation, and the loss of thermal energy can be reduced.

In addition, a valve mechanism is provided in the outside air suction duct, and by opening and closing the valve mechanism, the amount of air taken in can be adjusted, and the degree of pressure reduction inside the sealed machine and the amount of air to be ventilated can be arbitrarily set.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional front view showing an embodiment of the hot air generation ventilation device in the closed tea making machine according to the present invention. 1...Hot air generation ventilation device, 2...Indoor, 3...
Heat exchange chamber, 4... Heating chamber, 5... Suction blower, 6
...Communication duct, 7...Outside air passage, 8...Exhaust duct, 9...Outside air intake duct, 10...Outside air discharge duct, 11...Partition piece, 12...Burner, 1
3... Fuel port, 14... Chimney, 15... Supply blower, 16... Flame duct, 17... Connection duct, 18...
...Partition piece, 19...Machine room, 20...Discharge port, 2
1...Reduction duct, 22...Intake port, 23...Suction duct, 24...Outside air intake valve mechanism, 27...Temperature regulator.

Claims (1)

[Scope of utility model registration request] A sealed chamber is provided that is connected to the intake port of the sealed machine room, and a heat exchange chamber and a heating chamber are installed in this chamber. The other end is located outside the room, and an exhaust duct with many outside air passages is built in between.The upper part of the chamber is connected to an outside air intake duct equipped with an outside air intake valve mechanism, and the lower end is connected to an outside air intake duct with an outside air intake valve mechanism. The outside air discharge duct that is discharged into the room is connected, and the other heating chamber has a built-in connection duct with many flame ducts inside, and the upper part of this connection duct is connected to the reduction duct connected to the discharge port of the machine room. A hot air generation ventilation device for a closed tea machine, characterized in that the lower part of the heating chamber is connected to the room via a supply blower, the upper part of the heating chamber is connected to a chimney, and the lower part is connected to a combustion port provided with a burner.