JPS63123944A - Thermostatic-hydrostatic air conditioning equipments - Google Patents

Abstract

PURPOSE:To reduce installation expenses and also to reduce the running cost of the equipment by providing an air conditioner comprising a single-coil type fan coil and a humidifier and also providing a plurality of heat pump chillers for supplying any of cool water and warm water to the single coil of the fan coil. CONSTITUTION:As an air conditioner, one 2 provided with a single-coil type fan coil 5 and a humidifier 6 is used. Air blown off through the air conditioner 2 is circulated within a thermostatic-hydrostatic chamber 1 through a fan duct 11. Furthermore, in order to keep the interior of the chamber 1 in its entirety are predetermined temperature and humidity, a predetermined number of heat pump chillers 7 are operated with a predetermined flow rate of cool water or warm water at a command from a controlling computer 15 which has obtained data concerning the indoor atmosphere, and the cool water or warm water is passed through the single coil 3 of the single-coil tape fan coil 5 thereby to carry out the control of a heat source. A predetermined amount of air having the temperature and humidity thus controlled is supplied into the chamber by a fan 4 the rotational speed of which has been controlled thereby to control the chamber 1 in a thermostatic and hydrostatic manner. Therefore, the number of the air conditioners used is reduced and the inside of the air conditioner dispensed with the single coil 3.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to constant temperature/constant temperature air conditioning equipment that maintains a constant temperature with high precision using only either cold water or hot water using the temperature and humidity in a constant temperature room as a heat source. Regarding.

(Conventional technology) Conventionally, in order to control the temperature and humidity in a constant temperature / constant temperature room with high precision, an air conditioner equipped with a multi-coil type fan coil having a cooling coil and a heating coil and a humidifier is installed indoors. Multiple units are installed at appropriate intervals, and for constant temperature control, the cooling coil of each air conditioner produces supercooled air, which is then final adjusted to the blowout temperature using the heating coil.Also, for constant temperature control, the cooling coil of each air conditioner produces supercooled air. This was done by creating dehumidified air, using a humidifier to adjust the final blowout humidity, and then blowing the air, whose temperature and humidity were finally adjusted, into the room using the fans of each air conditioner.

(Problems to be Solved by the Invention) In the case of the above conventional example, a plurality of air conditioners are required, and each air conditioner requires two coils, a cooling coil and a heating coil, resulting in high equipment costs and running costs. The problem was that it was expensive.

The present invention aims to solve this problem in high-precision constant temperature/constant temperature air conditioning equipment.

(Means for Solving the Problems) The present invention provides an air conditioner equipped with a single-coil fan coil and a humidifier as an air conditioner that supplies air at a predetermined temperature and humidity indoors, and the single-coil fan coil Install multiple heat pump chillers that supply either cold or hot water to a single coil, and install fan ducts for indoor air circulation.
Furthermore, switching control of each heat pump chiller between cold water operation or drought operation, control of the number of heat pump chillers in operation, control of the air flow rate of the single-coil type fan coil fan, control of steam supply to the humidifier, and control of the air flow of the fan duct fan. The present invention provides constant-temperature/constant-temperature air conditioning equipment characterized by being equipped with a control computer that performs the following.

(Function) The present invention has the above configuration, and according to this, as shown in FIG. By command, a predetermined number of heat pump chillers (7) are operated with chilled water at a predetermined flow rate, and this chilled water is passed through the single coil (3) of the single coil type fan coil (5) to create air at a temperature and humidity below a predetermined temperature. Next, this air is passed through a single coil fan coil (5) whose rotation speed is controlled by instructions from the control computer 09.
It is sent to a predetermined interior by a fan (4), and the temperature inside the interior (1) is controlled to be constant.

Specifically, when the actual humidity in the room (1) is higher than the predetermined humidity, the fan (4) of the single-coil fan coil (5)
) to reduce the air blow m into the air (1) to raise the temperature in the room (1) until the indoor temperature reaches the upper limit allowable value, and when the indoor temperature reaches the upper limit allowable value, the fan ( 4) Increase the air blower ■ until the indoor temperature reaches the set value.
(1) The above-described fan <
Repeat the increase and decrease of the air blow m in step 4) to maintain a constant temperature in the room (1).
Control to constant temperature.

In addition, when the actual humidity in the room (1) is lower than the set humidity, the amount of air blown into the room (1) by the fan (4) of the single-coil fan coil (5) is increased, and the indoor temperature is increased. The temperature in the room (1) is lowered until the indoor temperature reaches the lower limit tolerance value, and when the indoor temperature reaches the lower limit tolerance value, the air flow rate of the fan (4) is decreased, and the temperature in the room (1) is lowered until the indoor temperature reaches the set value. 1)
The above-mentioned fan (4) is activated according to instructions from the control computer (19) until the indoor humidity reaches the set value.
) is repeated to control the temperature inside the room (1) to be constant.

In addition, in order to control constant temperature in a room during heating, first, a predetermined number of heat pump chillers (7) are operated with hot water at a predetermined flow rate based on a command from the control computer OS that has obtained information about the indoor atmosphere, and this hot water is pumped into a single coil. Water is passed through the single coil (3) of the type fan coil (5), and the amount of steam supplied to the humidifier (6) is controlled to a predetermined amount by instructions from the control computer aS, so that the temperature and humidity exceed the predetermined temperature and humidity. Air is created, and then a predetermined amount of this air is sent into the room by the fan (4) of the single-coil type fan coil (5) whose rotation speed is controlled by instructions from the control computer a9 to control the room temperature at a constant temperature. .

Specifically, when the actual humidity in the air (1) is lower than the predetermined humidity, the control computer a9 increases the amount of steam supplied to the humidifier (6) to maintain a constant temperature in the room. Control. In addition, when the actual humidity in the room (1) is higher than the set temperature, the amount of steam supplied to the humidifier (6) is reduced by a command from the control computer a9 to maintain a constant temperature in the room (1).
Control to constant temperature.

When performing the constant temperature/constant temperature control described above, the indoor air is circulated by the control computer (+51) through the fan duct (ITJ) controlled by the Suita wind m, and the temperature/humidity distribution in the room (1) is made uniform. .

(Example) Next, embodiments of the present invention will be described based on the drawings.

In Figure 1, (1) indicates a constant temperature/constant temperature to be controlled, and an air conditioner #a (2) that supplies air at a set temperature/humidity is installed within the constant temperature/constant temperature v(1). .

The air conditioning! 11 (2) is a single coil (3) and a fan <4
) and a humidifier (
6〉. Either cold water or hot water is passed through the single coil (3). Cold water and hot water are produced by a heat pump chiller (7) that can switch between cold water operation and hot water operation. A plurality of heat pump chillers (D) are installed, and each heat pump chiller (7) is connected to the single coil (3) of the air conditioner (2) by a two-pipe cold/hot water pipe (8). Although the figure shows three unitized heat pump chillers, four heat pumps aO each capable of independent operation are installed inside each heat pump chiller unit. A three-way valve (
9) is interposed, and by controlling the opening degree of this, a single coil (3)
Control the amount of water flowing to. On the other hand, a fan duct (IT) is installed near the ceiling of the constant temperature and constant temperature room (1).The fan duct a takes in indoor air from the duct a3, which is equipped with a number of downward air outlets. It consists of a fan a@ that supplies air to the duct a3, and by driving the fan a@, indoor air is circulated while forming a downward airflow from each air outlet (+21) of the duct a3. As shown in Fig. 3, air flows through the single coil type fan coil (5) and/or fan duct (by branching the prepent nozzle from +'D). When it is difficult to reach the end of chamber (1), a lateral airflow may be formed to spread the airflow throughout the chamber (1).

In the present invention, in addition to such basic equipment, an IIL control computer a9 is installed. The control computer ■
is the detection signal a from the indoor temperature sensor (IG, indoor humidity sensor ■, outside air temperature sensor ae, and cold/hot water temperature sensor a9)
, b, c, and d are set to 1!7 to control the switching between cold water operation or hot water operation of each heat pump chiller (7), and control the number of operating heat pump chillers (7).Single-coil type fan coil (5)
The fan (4) blows air ffi 1tIIJ tII, controls the amount of steam supplied to the humidifier (6), and the fan of the fan duct av (controls the blowing air m of IIO.Fan (4)
and fan aΦ'a control is performed by changing the frequency of the transistor inverter and changing the rotation speed of the fan motor. The program installed in the control computer a9 can be mainly divided into a startup operation mode and a control operation mode, and a typical flow of the program is shown in FIG.

In the startup operation mode, (i) fan (4) and fan (IΦ) are operated at the set maximum rotation speed at startup.(1) Heat pump chiller (7) has manual or automatic mode selection in the initial setting. In manual mode, you can switch between cold water and drought modes and specify the number of units to operate while looking at the display of outside air temperature, indoor humidity, and cold/hot water temperature.
Specify whether to start or stop the humidifier (6) and to supply steam to the humidifier (6) while looking at the indoor humidity display.In addition, in the automatic operation mode, the indoor temperature detection signal a1 the indoor temperature detection signal b1 the outside air temperature Obtaining the detection signal C and the cold/hot water temperature detection signal d, switching between cold water and hot water modes, the number of operating units, and the humidifier (
The control computer ('19) determines the steam supply m to 6) and starts operation fully automatically.

(lii) In order to prevent frequent switching between cold water operation and hot water operation when it is judged to be an intermediate period, increase the set temperature of cold water (e.g. from 7°C to 15°C) and set the set temperature of hot water. lower the temperature (e.g. lower from 45°C to 30°C). This allows precise control even during the intermediate period.

In the control operation mode, (1) the number of operating compressors that are self-controlled by the body thermometer of the heat pump chiller (7) and the temperature of the inlet water to the heat pump chiller (7) determines the cold water mode or hot water mode, and at the same time controls the number of operating compressors. , the amount of steam supplied to the humidifier (6) is controlled depending on the indoor humidity. (1) Heat pump chiller (7) has cold water/
When entering the hot water switching mode, the opening degree of the three-way valve <9) of the air conditioner (2) is monitored to determine whether water is cold or hot. (110 fan (4) is operated to save the most power based on the deviation value between the indoor temperature qe and the set temperature and the deviation value between the indoor humidity and the set humidity. ■Fan 0 @ is the indoor temperature ( 16b)
Based on the deviation between the temperature and the predetermined temperature, and the deviation between the indoor humidity (17b) and the set humidity, the system is operated to save the most power.

Since the specific operation in the controlled operation mode was explained in the section of the above-mentioned operation, it will be omitted here.

In FIG. 1, ■ indicates a filter, and ■ indicates a steam supply source. According to experiments conducted by the present inventors, for example, when performing ventilation 20 times, a conventional device that performs ventilation using multiple air conditioners consumes 100 KH of power, but the device of the present invention consumes 100 KH of power. Since a@ is used as a pre-vent fan, it will consume 40KH of power, and the negative power consumption can be reduced by that amount.

(Effects of the Invention) According to the present invention, an air conditioner equipped with a single-coil type fan coil and a humidifier is used as an air conditioner, and the air blown from the air conditioner is sent through a fan duct in a thermostatic room. The control computer uses a control computer to control the heat source, etc. to maintain the entire room at a predetermined temperature and humidity. Compared to the conventional type, the number of air conditioners is reduced and the coil in the air conditioner is a single coil, which has the effect of reducing equipment costs and running costs.

[Brief explanation of the drawing]

Fig. 1 is an equipment layout δ system diagram showing an example of implementation of the constant temperature/constant temperature air conditioning equipment of the present invention, Fig. 2 is a flow diagram showing an example of a program for startup and control operation mode of the equipment of the invention, and Fig. 3 is a FIG. 3 is a schematic explanatory diagram of another embodiment of the present invention. (1)... Constant temperature/constant temperature room (2)... Air conditioner (3
)...Single coil (4)...Fan (5)・
...Single-coil fan coil (6)...Humidifier (7)...Heat pump chiller 01)...Fan duct a@...Fan 09...Control computer

Claims (1)

[Claims] An air conditioner equipped with a single-coil fan coil and a humidifier is installed as an air conditioner that supplies air at a predetermined temperature and humidity indoors,
A plurality of heat pump chillers are provided to supply either cold water or hot water to the single coil of the single-coil fan coil, a fan duct is provided for indoor air circulation, and each heat pump chiller is controlled to switch between cold water operation and hot water operation. , a constant temperature system characterized by being equipped with a control computer that controls the number of operating heat pump chillers, controls the air flow rate of a single-coil type fan coil fan, controls the steam supply amount to a humidifier, and controls the blowout air volume of a fan duct fan.・Constant temperature air conditioning equipment.