JPH0642811B2 - Temperature control equipment in fruit ripening room - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a temperature control facility for controlling the temperature of a fruit ripening room.

[Technical background of the invention and its problems]

For example, when ripening fruits in the fruit ripening chamber, it is necessary to appropriately adjust the temperature in the fruit ripening chamber. Therefore, conventionally, a heat pump type refrigerator is provided as a temperature control facility in the fruit ripening room, and the refrigerator is used for cooling and heating.

However, when air conditioning is performed using only the refrigerator in this way, there is a drawback that the burden of the electricity charge, that is, the running cost becomes large.

[Object of the Invention]

The present invention has been made in view of the above points, and an object of the present invention is to provide a temperature control facility that can significantly reduce the burden of running costs.

[Outline of Invention]

The present invention, in a temperature control facility for controlling the temperature in a fruit ripening room by cooling and heating the fruit ripening room, an outdoor temperature sensor for detecting an outside air temperature, an indoor temperature sensor for detecting a room temperature, and an outside air temperature during heating. Operates when the room temperature is less than or equal to room temperature, and when the outside temperature is below the room temperature during cooling, the outside air intake device takes in the outside air into the fruit ripening chamber, and when the outside temperature is below the room temperature and the set temperature during heating. In this case, there is a heating device that operates in some cases and a cooling device that operates when the outside air temperature is equal to or higher than room temperature and a set temperature during cooling.

Example of Invention

 Hereinafter, the present invention will be described based on embodiments shown in the drawings.

FIG. 1 shows a fruit ripening chamber 1 equipped with the temperature control equipment according to the present invention. A door 2 is attached to the front portion of the fruit ripening chamber 1 so as to be openable and closable. Also, the rear wall 3 of the fruit ripening room 1
An opening 4 is formed on the upper side, and an outside air intake duct 5 is connected to the opening 4. This outside air intake duct 5
Is formed of a horizontal portion 5a and a vertical portion 5b that is bent downward from the horizontal portion 5a and has an outside air intake port 5c formed at the lower end. An outside air intake fan (outside air intake device) 6 and a motor damper 7 interlocking with the outside air intake fan 6 are arranged in the horizontal portion 5a, while an outside air intake port 5c at the lower end of the vertical portion 5b is provided. A filter 8 is arranged. Here, the outside air intake fan 6 is operated when the outside air temperature is above room temperature during heating, and is operated during cooling when the outside air temperature is below room temperature. Further, another opening 9 is formed below the rear wall 3 of the fruit ripening chamber 1, and an exhaust duct 10 is connected to the opening 9. Similar to the outside air intake duct 5, the exhaust duct 10 is formed of a horizontal portion 10a and a vertical portion 10b bent downward from the horizontal portion 10a and having a discharge port 10c at the lower end. A motor damper 11 is arranged in the horizontal portion 10a, while a filter 12 is arranged in the discharge port 10c at the lower end of the vertical portion 10b.

Further, an evaporator 13 which constitutes a part of a refrigerator and is used for cooling and a hot water heater 14 which is used for heating are juxtaposed in the upper rear part of the fruit ripening chamber 1, and the evaporator 13 and the hot water heater 14 are further provided. A blower fan 15 that is steplessly controlled by an inverter (not shown) is installed on the back of the. On the other hand, in front of the upper part of the fruit ripening chamber 1, a humidifier which is automatically controlled by a hydrangea heater (not shown).
16 are installed.

Further, an outdoor unit 17 connected to the evaporator 13 is installed outside the fruit ripening chamber 1. The outdoor unit 17 has a compressor, a condenser, etc. (not shown), and the evaporator 13
Together with this, it constitutes a refrigerator (cooling device). This refrigerator is operated when the outside air temperature is equal to or higher than the room temperature and the set temperature during cooling.

A hot water storage tank 18 for circulating hot water to the hot water heater 14 is installed outside the fruit ripening chamber 1. Furthermore, a solar heat absorber 19 and a boiler 20 are connected to the hot water storage tank 18. Of these, the solar heat absorber 19 is the hot water storage tank
The water in 18 is heated by solar heat during the day to a predetermined temperature (for example, 35
(° C) hot water. On the other hand, the boiler 20 is used as an auxiliary heat source when hot water of a predetermined temperature cannot be secured by the solar heat absorber 19. And, the hot water heater 14, the hot water storage tank 18, the solar heat absorber 19 and the boiler
The entire 20 constitutes a heating system.

This heating device is operated when the outside air temperature is equal to or lower than the room temperature and the set temperature during heating.

Further, an indoor temperature sensor 21 and an outdoor temperature sensor 22 are installed inside and outside the fruit ripening room 1, respectively.

In FIG. 1, reference numerals 23, 24 and 25 represent pumps.

Next, a method of operating this temperature control facility when used in, for example, a banana ripening chamber will be described.

In this case, one day (24 hours) is 6 hours, 6 hours and 12
Divide into 3 parts of time, the room temperature for the first 6 hours is 10 ℃, and the next 6 hours.
The bananas are aged by maintaining the room temperature for 20 hours at 20 ° C and the room temperature for the last 12 hours at 23 ° C, and repeating this for several days.

In this equipment, for example, the room temperature of the fruit ripening room 1 is 10 ° C.
To raise the temperature from 20 ℃ to 20 ℃, operate as follows. That is,
In this case, the outside temperature detected by the outdoor temperature sensor 22 is 20 ° C.
When the temperature is higher, the outside air intake fan 6 is operated to take in outside air into the fruit ripening chamber 1 to heat the inside of the fruit ripening chamber 1. On the other hand, when raising the room temperature of the fruit ripening room 1 from 10 ° C to 20 ° C, when the outside air temperature detected by the outdoor temperature sensor 22 is higher than 10 ° C but lower than 20 ° C, for example, when the outside air temperature is 16 ° C, the outside air temperature is The intake fan 6 is operated to take in outside air into the fruit ripening chamber 1 and the primary heating in the fruit ripening chamber 1 is performed to raise the room temperature to 16 ° C. Then, hot water is supplied from the hot water storage tank 17 to the hot water heater 14 to perform the second heating in the fruit ripening chamber 1.

Further, when the room temperature of the fruit ripening room 1 is raised from 10 ° C. to 20 ° C. When the outdoor temperature detected by the outdoor temperature sensor 22 is 10 ° C. or less, heating by the outside air cannot be expected.
Only the heating is done.

In this way, the room temperature in the fruit ripening room 1 is 10 ℃ to 20 ℃.
And this state is maintained for 6 hours. And 6
After the lapse of time, when the temperature in the fruit ripening chamber 1 is raised from 20 ° C. to 23 ° C., the same method as described above is used.

On the other hand, on the next day, when the room temperature of the fruit ripening room 1 is lowered from 23 ° C to 10 ° C, the operation is performed as follows. That is, in this case, when the outside air temperature detected by the outside temperature sensor 22 is lower than 10 ° C., the outside air intake fan 6 is operated to take in outside air into the fruit ripening chamber 1 to cool the inside of the fruit ripening chamber 1.
On the other hand, when lowering the room temperature of the fruit ripening room 1 from 23 ° C to 10 ° C, when the outdoor temperature detected by the outdoor temperature sensor 22 is lower than 23 ° C but higher than 10 ° C, for example, when the outdoor temperature is 16 ° C,
The outside air intake fan 6 is operated to take in the outside air into the fruit ripening chamber 1 to perform the first cooling in the fruit ripening chamber 1 to raise the room temperature.
Lower to 16 ℃. Then, the evaporator 13 which constitutes a part of the refrigerator cools the fruit ripening chamber 1 in the secondary cooling.

When lowering the room temperature of the fruit ripening chamber 1 from 23 ° C to 10 ° C, when the outdoor temperature detected by the outdoor temperature sensor 22 is 23 ° C or higher, cooling by the outside air cannot be expected.
Cooling is done only by 13.

In this way, the room temperature in the fruit ripening room 1 is from 23 ℃ to 10 ℃.
, And this state is maintained for 6 hours.

It should be noted that some changes in room temperature while maintaining the state of 10 ° C., 20 ° C. or 23 ° C. can be eliminated by the same method as described above.

According to the temperature control equipment of the embodiment configured as described above, the running cost for temperature control is significantly reduced.

The present invention is not limited to the above embodiment, but can be applied to a plurality of fruit ripening chambers 1 arranged in parallel as shown in FIG. In this case, as shown in FIG. 3, the outdoor unit 17, the hot water storage tank 18, etc., which are installed outside the fruit ripening chamber 1, can be shared, so that the outdoor unit 17, the hot water storage tank are individually provided.
It has the advantage of being superior in space factor compared to the case where 18 and the like are provided. 2 and 3, the same reference numerals as those in FIG. 1 represent the same parts, the reference numeral 26 indicates the central monitoring room, and the reference numeral 27 indicates the operation of the outside air intake fan 6, the refrigerator and the hot water heater 14. Represents a controlling controller.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, the present invention, in the temperature control equipment for controlling the temperature in the fruit ripening chamber by heating and cooling the fruit ripening chamber, an outdoor temperature sensor for detecting the outside air temperature, a room temperature sensor for detecting the room temperature, and heating. When the outside temperature is room temperature or above, it operates when the outside temperature is below room temperature, and when the outside temperature is below the room temperature during cooling, the outside air intake device takes the outside air into the fruit ripening chamber, and the outside temperature is room temperature during heating. And a heating device that operates when the temperature is equal to or lower than a set temperature, and an air conditioner that operates when the outside air temperature is room temperature or higher than the set temperature during cooling, so that the running cost in temperature control of the fruit ripening chamber can be significantly reduced. Have.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram when an embodiment of the temperature control equipment according to the present invention is applied to a fruit ripening room, and FIGS. 2 and 3 are schematic configuration diagrams of other embodiments of the present invention. 1 ... Fruit aging room, 13 ... Evaporator, 14 ... Hot water heater.

Claims (1)

[Claims] 1. A temperature control facility for controlling the temperature in a fruit ripening room by heating and cooling the fruit ripening room equipped with a door, and an indoor temperature sensor attached to detect the room temperature in the fruit ripening room, and the fruit ripening. An outdoor temperature sensor attached to detect the outdoor temperature outside the room, an outdoor air intake duct provided with a motor damper interlocking with an outdoor air intake fan provided in the fruit ripening chamber, and an exhaust duct provided with the motor damper, An evaporator and a hot water heater provided with a blow fan provided in the fruit ripening chamber, an outdoor unit connected to supply a refrigerant to the evaporator, and an auxiliary unit connected to the hot water heater to circulate hot water. The above-mentioned outside air intake fan provided with a hot water storage tank equipped with a heat source boiler, when the outside air temperature is above room temperature during heating and when the outside air temperature is below room temperature during cooling. When the outside air is taken in by operating the motor damper that works together, and when the outside air temperature is below room temperature and the set temperature during heating, the hot water from the hot water storage tank is supplied to the above hot water heater for heating, and during cooling, the outside air temperature is set to room temperature and set. A temperature control equipment for a fruit ripening chamber, characterized in that a refrigerant from the outdoor unit is supplied to an evaporator at a temperature equal to or higher than the temperature to cool the evaporator to control the temperature in the fruit ripening chamber.