JPS59137782A - Controller for drying temperature in tea making machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tea confectionery temperature control device suitable for rough rolling machines, medium rolling machines, and the like.

A rough rolling machine or a medium rolling machine (hereinafter referred to as a tea making machine) is a machine that receives hot air from a hot air generator and dries the tea confectionery placed in a barrel while controlling the temperature to a constant temperature.

Conventionally, this tea temperature (hereinafter referred to as tea temperature) has been controlled by turning the burner of the hot air generator into two states: fully open, that is, a large fire, and 0 to 115, that is, a small fire. It was. However, tea confectionery has a large heat capacity and it takes several minutes to change the tea temperature by 0.5 degrees, so a large discrepancy occurs between the ON-OFF of the heat source and the rise and fall of the tea temperature. As shown in Figure 4, even if the heat source is turned to a small flame in an attempt to lower the tea temperature, the tea temperature still rises by 20 seconds and then starts to drop. In this way, when the tea temperature drops below the set temperature, increase the tea temperature by -1-
Even if you set the heat source to a large fire to cool the tea, the hot air generator will have cooled down while the tea temperature is dropping, so it will take some time to discharge the high temperature hot air, and during this time the tea temperature will continue to drop further. After a while, he finally moved on to the second rank. Even if the heat source is turned off when the tea temperature exceeds the set value, the tea temperature continues to rise further and greatly exceeds the set value. In this way, the heat source is turned on and off depending on the tea temperature.
Second, there was a problem in that the temperature of the hot air varied greatly, making it impossible to control the tea temperature at a constant level.

In view of these problems, the present invention has developed a drying method that reduces fluctuations in tea temperature by setting the hot air at two levels, high temperature and medium temperature, and reducing the temperature change of the hot air supplied to the tea machine. The purpose is to provide a temperature control device.

Another object of the present invention is to prevent the tea temperature detector from being exposed to hot air and cooling the hot air generator when replacing tea confectionery, thereby quickly measuring the tea temperature when introducing confectionery. An object of the present invention is to provide a drying temperature control device that can control the drying temperature.

Therefore, details of the present invention will be explained below based on illustrated embodiments.

FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention, and reference numeral l in the figure is a tea temperature regulator, which detects the temperature of tea from a tea temperature detector 2 disposed inside the body of the tea making machine. A temperature signal and a setting signal from the tea temperature setting device 3 for setting the drying temperature of tea confectionery are input,
Set the hot air temperature to the upper limit of 1 when turning the tea temperature setting.
The relay 4 is configured to be driven so as to switch to the lower limit when the value falls below the lower limit. 5 is a hot air temperature controller,
A hot air temperature setting signal from the lower limit temperature setter 6 or the lower limit temperature setter 7 selected by the tea temperature regulator 1 is input to one input terminal. This lower limit temperature setting device 6 is
Based on the thermal energy balance between the thermal energy from the hot air generator, the amount of heat dissipated by the tea making machine, and the heat of evaporation of the moisture contained in the tea confectionery, the tea temperature is set below the drying temperature set by the tea temperature setting device l. The upper limit temperature setting device 7 sets the temperature at which the tea temperature can be raised to a temperature higher than the drying temperature (hereinafter referred to as the lower limit temperature), and the upper limit temperature setting device 7 , - upper limit temperature). A hot air temperature signal from a hot air temperature detector 8 disposed at the discharge port of the hot air generator is input to the other input terminal of the hot air temperature controller 5, and the hot air temperature is adjusted to the selected setting value. It is configured to output an H signal to the relay 9 when it goes below, and a zero signal to the relay 9 when it goes over, to open and close the fuel supply valve 10 of the hot air generator. ll is a tea temperature setting release device connected to the tea temperature setting device 1, and when the temperature signal from the tea temperature detector exceeds the drying temperature by about 15 to 20°C, the hot air temperature controller 5 is set to the upper limit temperature. The hot air generator is configured to prevent the hot air generator from cooling down when changing the tea and confectionery. Note that reference numerals 12 and 13 in the figure indicate a tea temperature indicator and a hot air temperature indicator connected to the tea temperature detector 2 and the hot air temperature detector 8, respectively.

Next, the operation of the apparatus configured as described above will be explained based on the temperature curve shown in FIG.

When the drying temperature of the tea temperature setting device is set to 35°C, and the lower and upper limits of the hot air temperature controller are set to 80°C and 100°C, respectively, and the device is operated, at this stage, the tea confectionery is thrown in. Therefore, the tea temperature detector 2 is exposed to hot air, and the temperature rises to exceed 50°C. Therefore, the tea temperature setting release device 11 switches the hot air temperature regulator 1 to the upper limit temperature, and discharges 100°C hot air from the hot air generator to heat the inside of the tea machine to 100°C (r ). In this state, when tea leaves are put into the tea making machine, the tea confectionery absorbs the heat inside the tea making machine body and rapidly rises in temperature, causing the temperature of the tea temperature detector 2 to drop rapidly (II). In this manner, when the tea temperature detector falls below 50°C, the operation of the tea temperature setting/cancelling device 11 is stopped and the tea temperature regulator is activated.

At this point, the temperature of the tea temperature detector 2 is higher than the drying temperature, so the tea temperature regulator 1 activates the relay 4 and switches the hot air temperature regulator 5 to the lower limit temperature to lower the hot air temperature to 80°C.
(m). This reduces the thermal energy supplied to the tea machine, and the tea temperature continues to drop. In this way, when the tea temperature falls below 35°C, the tea temperature regulator 1 activates the relay 4 and switches the hot air temperature regulator 5 to the second temperature limit, supplying 100°C hot air to the tea machine. Then, slowly raise the tea temperature to 10A (rV). When the tea temperature exceeds 35°C, the tea temperature controller 1 again switches the hot air temperature to 80'O and gradually lowers the tea temperature (V). 80° like this
The tea temperature is maintained at a constant temperature by changing the hot air temperature between C and 100 C, and the tea confectionery is dried until it reaches a predetermined ice loss. When the tea confectionery is taken out from the tea machine when drying is completed, the tea temperature detector 2 is exposed to hot air and reaches 50°C, and the tea temperature setting release device 11 is activated to switch the hot air generator to the northern limit temperature. It is kept on standby in such a way that hot air of 100°C can be discharged at any time, in preparation for the next introduction of tea and sweets.

In another embodiment of the present invention shown in FIG. 3, a timer 14 is connected to a relay 4 that switches the hot air temperature setting device 5, so that the hot air temperature setting device 5 can be operated from the time of discharging the tea confections to the time of putting them in the next time. 5 is switched to the 1-eye side to prevent the hot air generator from cooling.

As explained above, according to the present invention, the temperature difference between the hot air for heating and cooling the tea confectionery supplied to the tea making machine is made as small as possible, so the change in tea temperature is gradual, and the tea confectionery is Despite having a large heat capacity, the tea temperature can be controlled constant with a small fluctuation range. In addition, since the hot air temperature controller is set to the temperature limit when tea confectionery is not added, the initial tea temperature rises quickly when tea confectionery is added, and the operating rate of the tea making machine can be increased.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention;
FIG. 2 is an explanatory diagram showing the operation of the same device, FIG. 3 is a block diagram of the device showing another embodiment of the present invention, and FIG.
FIG. 2 is an explanatory diagram showing the operation of a conventional device. ■・・・Tea temperature regulator 2・・・・Tea temperature detector 3・
... Drying temperature setting device 5 ... Hot air temperature controller 6.
...Lower limit temperature setter 7...Upper limit temperature setter 8.
...Hot air temperature detector io...Fuel supply valve 11.
...Tea temperature setting release device applicant Toyo Denso Co., Ltd. Agent
Patent Attorney Kei Nishikawa Oil Volume Katsuhiko Kimura-455

Claims (2)

[Claims] (1) Tea temperature detection means that detects the temperature of tea leaves inside the tea machine body and outputs a tea temperature signal, sets the drying temperature of tea confectionery, compares this set temperature with the tea temperature signal, and when the former is larger is selected by the tea temperature adjusting means which selects the upper limit temperature and the lower limit temperature when the latter is large; the hot air temperature detecting means which detects the hot air temperature of the hot air generating means that supplies hot air to the tea machine; and the tea temperature adjusting means. A drying temperature control device for a tea making machine, comprising a hot air temperature adjusting means for adjusting the hot air temperature so that the hot air temperature is adjusted to a certain temperature. (2) A tea temperature detection means that detects the temperature of the tea confectionery in the body of the tea making machine and outputs a tea temperature signal, sets the drying temperature of the tea confectionery, compares this set temperature with the tea temperature signal, and when the former is larger. is selected by the tea temperature adjusting means which selects the upper limit temperature and the lower limit temperature when the latter is large; the hot air temperature detecting means which detects the hot air temperature of the hot air generating means that supplies hot air to the tea machine; and the tea temperature adjusting means. and a tea temperature setting canceling means that switches the hot air adjustment means to an upper limit temperature when no tea confectionery is put into the tea making machine body. Drying temperature control device in the machine.