JPH0317047B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides for processing gas from a processing gas intake,
After controlling the temperature and humidity to a water vapor saturated state at the set temperature, it is reheated and provided to general living rooms, clean rooms for various uses, or rooms subject to temperature and humidity control such as painting booms, and the humidity in the target room is adjusted. The present invention relates to a temperature and humidity control method that enables highly accurate control of temperature and humidity.

Conventionally, in the above temperature and humidity control method, in order to control the temperature and humidity of the process gas such as outside air taken in from the intake port 4 to a water vapor saturated state at a set temperature, as shown in FIG. Circulating washers 22
Alternatively, as shown in FIG. 5, a large amount of water vapor is sprayed and supplied from a humidifying nozzle 23 to the processing gas preheated by a preheater 3', and then a large amount of water vapor is sprayed from a humidifier 16. I was trying to cool it down to saturation, but in any case,
In order to directly spray a large amount of hot water or steam, hot water mist or steam mist remains even in the treated gas that has been reheated by the reheat heater 17, and these residual mist becomes drain in the transfer path to the target chamber 7. ,
In addition, there was a problem that the liquid was captured by the filter 6 installed in the middle of the transfer path and turned into drain, and the drain was scattered to the target chamber 7 side.

Therefore, it is conceivable to provide an extended air passage in the conditioner downstream of the reheat heater 17 to naturally vaporize or drain the remaining mist, but it would take a considerable amount of time to ensure sufficient natural vaporization or draining. Since a long air path is required, a problem arises in that the overall structure of the harmonizer becomes significantly larger.

An object of the present invention is to enable processing gas to be sufficiently humidified without generating residual mist, and to reasonably reduce the energy required for temperature and humidity control.

The characteristic means of the method of the present invention is that, in order to control the temperature and humidity of the processing gas from the intake port to a water vapor saturated state at a set temperature, high-humidity hot air from a high-temperature hot air generator is mixed with the processing gas, so that the temperature is lower than the set temperature. The high-temperature, high-humidity gas is cooled to the set temperature using a non-mixing type cooler to create a gas saturated with water vapor, and the high-humidity hot air is mixed as the initial temperature of the process gas increases. The purpose is to adjust the thermal energy applied to the generator so that the temperature of the generator is lowered, and its functions and effects are as follows.

In other words, since high-humidity hot air generators humidify hot air, even if the amount of humidified water is large, it is extremely efficient compared to humidifying low-temperature process gases by direct steam spray or hot water spray. Hot air can be sufficiently humidified under good conditions.

Therefore, it is possible to keep almost no mist of humidifying moisture in the high humidity hot air mixed with the processing gas, so that the processing gas can be mixed with the high humidity hot air without generating any residual mist. This makes it possible to sufficiently humidify and heat the air without any heat generation, and to create a high-temperature, high-humidity gas without mist before cooling and reheating.

As a result, it is possible to avoid problems caused by residual mist flowing out of the conditioner, and it is also possible to eliminate the need for an extended air passage in the conditioner for natural vaporization and drainage of residual mist, making it possible to greatly reduce the size of the conditioner itself. Can be miniaturized in width.

On the other hand, if you try to control the transition of the set temperature to the water vapor saturated state by simply adjusting the cooling capacity of the non-mixing type cooler in response to temperature changes in the initial processing gas, for example, when the processing gas is outside air, is the third
As shown in Figure A, when the outside air changes from the state to '' due to seasonal changes, the high-temperature, high-humidity air that has changed to the '' state or '' state by mixing with the high-humidity hot air set in the The cooling load to transition to the water vapor saturated state at the set temperature tx is from Qc ₁
Qc′ ₂ varies greatly, and the average cooling load and maximum cooling load Qc′ ₂ become large, which is disadvantageous in terms of energy consumption.

According to the present invention, as the temperature of the outside air increases from the above-mentioned state to the '' state, as shown in FIG.
Since the temperature state of the mixed high-humidity hot air is lowered from the state to the '' state, cooling is performed to move the high-temperature, high-humid air, which becomes the state or '' state by mixing with the high-humidity hot air, to the water vapor saturated state at the set temperature tx. The load fluctuation can be suppressed from Qc ₁ to Qc ₂ , and the average cooling load and maximum cooling load Qc ₂ can be greatly reduced. In addition to reducing the heat energy supplied to the generator, the overall energy consumption can be significantly reduced.

In short, the overall structure of the device can be made compact while the humidification performance can be greatly improved.
We were able to provide a temperature and humidity control method that is advantageous in terms of running control.

Next, embodiments will be described based on the drawings.

As shown in FIG. 1, one end of the mixing chamber 1 is connected to an outside air intake 4 via a prefilter 2 and a preheating coil 3, and the other end is connected to an air blower 5 and a HEPA filter 6. A part of the exhaust gas forcibly discharged from the exhaust port 9 of the air-conditioned room 7 by the exhaust fan 10 is sent through the branch flow path 11 to the blow-off device 8 of the air-conditioned room 7 after preheating. The outside air is mixed and supplied, and the temperature and humidity of the passing air is controlled to a set temperature and humidity state by a temperature and humidity control device provided in the mixing chamber 1.

To explain the temperature and humidity control in the mixing chamber 1,
A part of the outside air after passing through the prefilter 2 is sent to the blower 1.
2, the diverted outside air is supplied into the casing 14A of the high-humidity hot air generator 14 through the bypass flow path 13, and the diverted outside air is supplied to the heater 14B and the water spray type humidifying nozzle 14C provided in the casing 14A, for example.
Adjust the temperature to high humidity and hot air at around 70° to 80°C. and,
By jetting and supplying the high-humidity hot air from the generator 14 to the passing air in the mixing chamber 1 from the nozzle 15, the passing air is adjusted to high temperature and high humidity by mixing with the high-humidity hot air, and the high temperature and high humidity is The air is cooled and dehumidified to a water vapor saturated state at a set temperature tx by a cooling coil 16 provided downstream of the nozzle 15,
Further, the reheating coil 17 provided on the downstream side heats the inside of the room to a predetermined supply temperature.

In other words, by humidifying the passing air by mixing it with the high-humidity hot air from the generator 14, good humidification is performed without generating residual mist, and the high-temperature and high-humidity air after humidification is cooled to bring the dew point Through this control, the humidity in the air-conditioned room 7 is maintained at the set humidity with high accuracy.

The above-mentioned temperature and humidity control process will be explained using the t-x diagram in FIG. 2. The outside air heated by the preheating coil 3 changes from state to state by mixing with the exhaust air from the room. Then, the passing air is heated and humidified to the above-mentioned temperature and humidity by mixing the high-humidity hot air that has been heated and humidified to the above state in the generator 14, and the passing air is heated and humidified to the above-mentioned high temperature and high humidity. As it passes through, it is cooled and dehumidified to a saturated state at the set temperature tx, and is heated by the reheating coil 17 from one state to another, and in that state is blown into the room.

In order to perform temperature and humidity control in response to changes in outside air temperature, a first temperature sensor 1 attached to the outside air intake port 4 is used.
8 constantly detects the intake outside air temperature t, and when the outside air temperature t fluctuates in the range from the design minimum temperature t ₁ to the set preheating temperature t ₂ by the preheating coil 3, information from the temperature sensor 18 is detected. , and the heating capacity of the preheating coil 3 is automatically adjusted by the controller 20 based on the information from the second temperature sensor 19 for feedback provided immediately after the preheating coil 3, so that the outside air temperature after preheating becomes the set preheating temperature. _t2 maintain.

On the other hand, if the intake outside air temperature t becomes higher than the set preheating temperature _t2 during the intermediate period, etc., based on the information from the first temperature sensor 18, the intake outside air temperature t becomes higher than the set preheating temperature. The controller ₂ is configured to reduce only the temperature ta of the high-humidity hot air from the set maximum temperature (ta) as the temperature t2 increases.
0, the heating capacity of the heater 14B in the generator 14 is automatically adjusted.

In other words, in Figure 2, the outside air has the set preheating temperature
By automatically controlling the state of the high-humidity hot air from state to state ' when the temperature reaches state ' which is higher than t ₂ , as the outside air temperature t rises to a higher temperature side than the set preheating temperature t ₂ . The increase in the cooling load (Qc) of the cooling coil 16 is suppressed from (Qc ₁ ) to (Qc ₂ ) to suppress the increase in the necessary energy required for cooling, and the heater 1 in the generator 14 for the above-mentioned adjustment is suppressed.
By reducing the heating capacity of the 4B, we are aiming to reduce the running cost significantly during the interim period, as well as reducing the amount of energy supplied.

In the figure, 22 is a third temperature sensor for feedback that detects the temperature ta of the supplied high-humidity hot air.

Next, another embodiment will be described.

The heating means in the high-humidity hot air generator 14 can be various conventionally known means such as electric heaters, burners, and high-temperature steam coils, and the humidifying means in the generator 14 can also be water spray nozzles, steam spray nozzles, etc. Various means can be applied.

Set maximum temperature of high humidity hot air from generator 14
The setting conditions such as ta ₁ , set humidity, and temperature and humidity of the high-temperature, high-humidity air created by mixing it with the high-humidity hot air are the set temperature and humidity of the target room 7 and the mixture of the treated air and the high-humidity hot air. It can be changed as appropriate depending on the quantity ratio and the like.

Various means can be used to cool the high-temperature, high-humidity air created by mixing it with high-humidity hot air to a water vapor saturated state at the set temperature tx, as long as the heat medium that serves as the cooling source is not mixed with the treated air. Applicable.

Instead of mixing part of the exhaust air from the room with the outside air taken in, only the outside air may be used as the target air for temperature and humidity control, and the gas that is the target of temperature and humidity control may be other than air. Various gases can be applied depending on the purpose of the target chamber 7, and these gases are collectively referred to as processing gas.

The preheating process of the intake process gas can be omitted if necessary.

Further, the means for adjusting the thermal energy applied to the generator 14 is such that as the temperature t of the introduced initial processing gas increases, the temperature ta of the high-humidity hot air decreases. Instead of the automatic control means based on the temperature detection, the temperature may be adjusted manually.

The temperature and humidity control method according to the present invention can be applied to rooms to be temperature and humidity controlled for various purposes, and the use thereof is not limited.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the method of the present invention. FIG. 1 is an overall system diagram, FIG. 2 is a t-x diagram of air showing the temperature and humidity control process, and FIG. ，Ro is
The air t-x diagram, FIG. 4, and FIG. 5, which explain the control state of temperature and humidity control, are diagrams each explaining the conventional method. 4...Processing gas intake port, 7...Target chamber, 14...
...High humidity hot air generator, 16...Cooler, t...Processing gas temperature, ta...High humidity hot air temperature, tx...Set saturation temperature.

Claims (1)

[Claims] 1 After controlling the temperature and humidity of the processing gas from the processing gas intake port 4 to a water vapor saturated state at the set temperature tx,
This is a temperature and humidity control method for reheating and supplying the target room 7, in which the temperature and humidity control is performed by mixing high humidity hot air from the high humidity hot air generator 14 with the processing gas to achieve the set temperature. A high-humidity body with a temperature higher than tx is created, and the high-temperature and high-humidity body is heated to the set temperature using a non-mixing type cooler 16.
tx to create a water vapor saturated gas, and adjust the thermal energy applied to the generator 14 so that the temperature ta of the mixed high-humidity hot air decreases as the initial temperature t of the treated gas increases. Humidity control method.