JP2009092446A - Method and device for adjusting temperature/humidity in humidity conditioning performance measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temperature/humidity adjusting means in a humidity conditioning performance measuring device capable of efficiently and accurately performing a humidity conditioning performance test of a humidity conditioning building material. <P>SOLUTION: A temperature/humidity conditioning chamber 2 for performing the humidity conditioning performance test of a sample F of the humidity conditioning building material is provided in a thermohygrostat bath 1 to measure the temperature/humidity in the temperature/humidity conditioning chamber 2, and the measure value is compared and operated with a set temperature/humidity which is a target for performing the humidity conditioning test at every fixed time by a comparison operation circuit 9 of a central processing unit, and the temperature/humidity of an atmosphere supplied into the thermohygrostat bath 1 is adjusted so that the temperature/humidity in the temperature/humidity conditioning chamber 2 becomes equal to the set temperature/humidity. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a humidity control apparatus for measuring the performance of a humidity control building material in accordance with JIS A 1470-1, and is capable of efficiently adjusting the humidity control chamber to the set temperature and set humidity. The present invention relates to a method and an apparatus for carrying out the method.

  Conventionally, it has been practiced to reduce fluctuations in the relative humidity of indoor spaces by adopting humidity-controlling building materials as interior materials for buildings. As a method for measuring the humidity control performance of such a humidity control building material, the method described in JIS A 1470-1 (Non-patent Document 1) is generally used. This method is a method of measuring the mass of the sample of the humidity-controlled building material over time in a constant temperature and humidity chamber adjusted to a constant temperature and humidity environment, and as an apparatus for carrying out this method, A constant temperature and humidity chamber provided with a humidity control chamber surrounded by a windshield, an electronic balance placed in the humidity control chamber for placing a measurement sample, and a sample placed on the electronic balance A temperature sensor and a humidity sensor for detecting the temperature and humidity in the humidity control measurement chamber 50 mm above from each other, a fan for stirring in the tank that gives a constant air velocity to the sample surface in order to keep the moisture transfer resistance on the sample surface constant, A temperature / humidity adjusting means for heating, humidifying, and cooling the inside of the thermostatic chamber is provided, and a temperature sensor and a humidity sensor for detecting the temperature and humidity in the thermostatic chamber are provided.

  The humidity control device configured as described above sets the target temperature and humidity when performing a humidity control test in the humidity control chamber, and measures the humidity of the sample under the set temperature and humidity. However, as described above, the humidity control chamber is partitioned by a windshield from the constant temperature and humidity chamber in order to avoid the influence of wind from the fan of the constant temperature and humidity chamber. The temperature and humidity measurement values in the temperature and humidity chamber are controlled and controlled by the temperature and humidity control means consisting of a cooler, and the temperature and humidity measurement values in the humidity control chamber must be different. become.

  As a method for adjusting the temperature and humidity in the constant temperature and humidity chamber to the set temperature and humidity by controlling the ability of the heater and humidifier, for example, the means described in Patent Document 1 is known. It is possible to easily and automatically adjust the temperature and humidity in the constant temperature and humidity chamber in the humidity control performance measuring device by such a control method, but the temperature and humidity in the humidity control measurement chamber partitioned by the windshield. Therefore, it is difficult to automatically adjust the temperature to the set temperature and the set humidity.For this reason, the temperature and humidity values detected by the temperature sensor and humidity sensor are displayed on the monitor. Based on the detected value, the temperature and humidity adjusting means for heating, humidifying, and cooling the inside of the constant temperature and humidity chamber is manually controlled, and this control operation is performed at regular intervals to determine the temperature and humidity in the humidity control measurement chamber. Set temperature and set humidity At present, it is adjusted to be.

JIS A 1470-1 (humidity response method) JP 7-218421 A

  However, according to the temperature / humidity adjustment method in the humidity control chamber as described above, the temperature / humidity adjusting means is artificially controlled so that the detected value of the temperature / humidity in the humidity control chamber approaches the set temperature and the set humidity. Change the temperature and humidity in the temperature and humidity chamber, detect the temperature and humidity in the humidity measurement chamber that changes according to the changed temperature and humidity after a certain period of time, and adjust the temperature and humidity so that the value approaches the set temperature and the set humidity By manually controlling the adjustment means again, changing the temperature and humidity in the temperature and humidity chamber, and repeating this operation, the humidity measurement chamber is adjusted to the set temperature and set humidity. However, there is a risk that the setting of the change range may be complicated and may fluctuate up and down, making it difficult to make fine setting changes and requiring considerable labor and labor for humidity control measurement of the sample of the humidity control building material. In particular, when the humidity control performance test is started and when the set humidity is changed, it is difficult to adjust the temperature and humidity in the constant temperature and humidity chamber, which is a great difficulty in measuring humidity.

  The present invention has been made in view of such problems, and the object thereof is the temperature in the humidity control measurement chamber provided in the thermostatic chamber for performing the humidity control performance test of the humidity control building material sample. The present invention provides a temperature / humidity adjustment method and a temperature / humidity adjustment device in a humidity control apparatus capable of automatically adjusting the humidity and humidity to a predetermined set temperature and set humidity in a short time.

  In order to achieve the above object, the invention according to claim 1 of the present invention is a temperature and humidity adjustment method for performing a humidity control performance test of a humidity control building material in a thermostatic chamber, comprising heating, cooling, The temperature and humidity inside the temperature and humidity chamber is controlled by the temperature and humidity adjustment means for humidification, and the temperature and humidity inside the humidity control chamber surrounded by the draft shield provided in the temperature and humidity chamber. Measure and input the temperature and humidity in the humidity control chamber into the central processing unit, and set the temperature and humidity to the target set temperature and humidity when performing the humidity control performance test previously input to the central processing unit. The atmosphere supplied from the temperature / humidity adjusting means to the constant temperature / humidity chamber by the control device so that the temperature / humidity in the humidity control measurement chamber becomes equal to the set temperature / humidity by performing a comparison operation with a comparison operation circuit of the central processing unit at regular intervals Adjusting the temperature and humidity in the temperature and humidity chamber by changing the temperature and humidity To.

  The invention according to claim 2 is the temperature and humidity adjustment method in the humidity control performance measuring apparatus according to claim 1, wherein the measured temperature and measured humidity in the humidity controlled measurement chamber are set to the set temperature and the set humidity. When a certain ratio is exceeded, the temperature difference between the measured temperature value and the set temperature value at that time, and the humidity difference value between the measured humidity value and the set humidity value are referred to as the temperature value in the constant temperature and humidity chamber. The temperature / humidity adjusting means is controlled by the control device so that the temperature value and the humidity value are subtracted from the humidity value, respectively, and the measured temperature value and the measured humidity value in the humidity control measurement chamber are compared with the set temperature value and the set humidity value. When the temperature falls below a certain percentage, the temperature difference between the set temperature value and the measured temperature value at that time, the humidity difference value between the set humidity value and the measured humidity value, and the temperature value and humidity in the constant temperature and humidity chamber The temperature is controlled by the control unit so that the temperature value and the humidity value are added to each value. And controlling the degree adjusting means.

  The invention according to claim 3 is an apparatus for carrying out the temperature and humidity adjustment method in the humidity control performance measuring apparatus, and is provided with a constant temperature and humidity chamber provided with a humidity control measurement chamber surrounded by a windshield, A ventilator that adjusts the ventilation volume in the humidity control chamber to a constant level and applies a constant air speed to the surface of the sample in the humidity control chamber; and a temperature / humidity meter having a sensor that detects the temperature and humidity in the humidity control chamber; A temperature / humidity measuring device with a sensor that detects the temperature and humidity inside the temperature and humidity chamber outside the windshield, temperature and humidity adjustment means for heating, cooling and humidifying the temperature and humidity chamber, and the air in the temperature and humidity chamber A humidity control chamber, and a control device that controls the temperature / humidity adjusting means so that the temperature / humidity in the humidity control measurement chamber becomes a set temperature / humidity targeted for the humidity control performance test. When performing the humidity control performance test in a performance measurement device A central processing unit for inputting the set temperature and humidity is connected to the central processing unit, and the temperature and humidity measuring device of the humidity control measuring chamber and the control unit are connected to the central processing unit, and the set temperature and humidity value is set by a comparison operation circuit of the central processing unit. And the temperature / humidity measurement value in the humidity control chamber are compared and calculated at regular intervals, and the temperature and humidity adjustment means is controlled by the controller so that the temperature / humidity in the temperature control chamber becomes the set temperature / humidity. The temperature and humidity of the atmosphere supplied to the constant temperature and humidity chamber are changed to adjust the temperature and humidity in the constant temperature and humidity chamber.

  In the temperature / humidity adjusting device in the humidity control performance measuring apparatus configured as described above, the invention according to claim 4 provides an electronic balance that measures the mass of the sample of the humidity control building material installed in the humidity control measurement chamber at regular intervals. A mass measuring device for detecting the mass value of the sample is connected to the data recording device of the central processing unit, and a comparison operation circuit is connected to the data recording device to control the mass value together with the mass value. The temperature and humidity in the humidity measurement chamber and the constant temperature and humidity chamber and the set temperature and humidity are displayed and recorded at regular intervals.

  According to the present invention, the inside is surrounded by the temperature and humidity in the temperature and humidity chamber in which the temperature is adjusted and controlled by the temperature and humidity adjusting means for heating, cooling and humidification, and the windshield provided in the temperature and humidity chamber. The temperature and humidity in the humidity control chamber are measured, and the temperature and humidity in the humidity control chamber are input to the central processing unit, and the humidity and humidity control test previously input to the central processing unit is performed. The temperature / humidity adjustment is performed by the control device so that the temperature / humidity in the humidity measurement chamber becomes the set temperature / humidity by comparing the calculated temperature / humidity, which is the target when performing, with a comparison processing circuit of the central processing unit at regular intervals. Since the temperature and humidity in the temperature and humidity chamber is adjusted by changing the temperature and humidity from the means, it was provided in the temperature and humidity chamber to perform the humidity control performance test of the sample of the humidity control building material The temperature and humidity in the humidity control chamber are automatically and accurately set to a preset temperature in a short time. It is possible to adjust the temperature and humidity from the temperature and humidity adjusting means finely every very short time, such as every 1 to 5 minutes. Therefore, not only the fluctuation of the detected value of the temperature and humidity in the humidity control chamber and the constant temperature and humidity chamber is reduced, but the humidity control chamber can be efficiently set to the set temperature and set humidity. .

  Accordingly, the temperature and humidity values detected by the temperature sensor and the humidity sensor are displayed on a monitor or the like, and the temperature at which the inside of the constant temperature and humidity chamber is heated, humidified and cooled based on the detected value is displayed. According to the conventional method in which the humidity adjusting means is controlled manually, the adjustment is about every 10 minutes. However, according to the present invention, the adjustment can be made every 1 to 3 minutes. The adjustment performance of an excellent humidity conditioning building material can be measured more accurately and efficiently, and the development of an excellent humidity conditioning building material becomes possible.

  Further, according to the present invention, when the measurement temperature and the measurement humidity in the humidity control measurement chamber exceed a certain ratio with respect to the set temperature and the set humidity, respectively, or when the measurement temperature and the measurement humidity become a certain ratio or less. By configuring the temperature / humidity adjusting means to operate and adjust, the humidity measurement chamber can be adjusted to the set temperature / humidity more efficiently and accurately.

  According to the invention of claim 4, a mass measuring device that detects a mass value at regular intervals is connected to an electronic balance that measures the mass of a sample of the humidity control building material installed in the humidity control measurement chamber. The mass measuring instrument is connected to the data recording device of the central processing unit, and the comparison arithmetic circuit is connected to the data recording device, and the temperature and humidity in the humidity control chamber and the constant temperature and humidity chamber together with the mass value, and Because it is configured to display the set temperature and humidity, the data on the mass change of the sample whose humidity control performance is measured based on the temperature and humidity set according to the target, and the temperature and humidity value input every short time It is possible to store data such as changes in the temperature and humidity together with the above set temperature and humidity, and to display these data as a graph, so that the humidity control performance of the humidity control building material can be confirmed at a glance.

  Next, a specific embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a simplified diagram of a temperature / humidity adjusting device for carrying out a temperature / humidity adjusting method in a humidity control performance measuring device. The temperature / humidity adjusting apparatus includes a humidity control chamber 2 separated from the thermostatic chamber 1 by a windshield 3 in the thermostatic chamber 1, and the humidity is adjusted on the bottom of the humidity control chamber 2. An electronic balance 4 for measuring the mass of the sample F of the building material is installed, and an air supply fan 5 and an exhaust fan 6 are provided on one side and the other side of the windshield 3 so as to face each other. While taking the air in the outside constant temperature and humidity chamber 1 into the humidity control chamber 2, the air inside the humidity control chamber 2 is discharged into the constant temperature and humidity chamber 1 by the exhaust fan 6. The ventilation rate of the sample F is adjusted to a constant level, and the electronic balance 4 is not shaken on the surface of the sample F. And to provide a constant wind velocity along the surface.

  The electronic balance 4 is connected to a mass measuring device 7 provided outside the constant temperature and humidity chamber 1 and the mass measuring device 7 is connected to a data recording device 8 of a central processing unit (CPU). The mass value of the sample F is measured at regular time intervals by the mass measuring instrument 7 and the measured value is recorded in the data recording device 8.

  A temperature sensor a for detecting the temperature in the constant temperature and humidity chamber 1 and a humidity for detecting humidity are provided at appropriate positions inside the constant temperature and humidity chamber 1 outside the windshield 3 surrounding the humidity control chamber 2. The sensor b is disposed, and the temperature sensor a and the humidity sensor b are connected to the central processing unit (via the temperature measuring device A and the humidity measuring device B that measure the detected values at regular intervals, respectively. CPU). On the other hand, in the humidity control chamber 2, the temperature sensor c for detecting the temperature in the humidity control chamber 2 above the surface of the sample F with a space of about 50 mm and the humidity for detecting the humidity. A sensor d is provided, and the temperature sensor c and the humidity sensor d are connected to the temperature and humidity chamber via a temperature measuring device C and a humidity measuring device D that measure respective detection values at regular intervals. Together with the temperature / humidity measuring instruments A and B on one side, it is connected to the comparison operation circuit 9 in the central processing unit (CPU). The temperature sensor c and the humidity sensor d can be vertically adjusted according to the thickness of the sample and the height of the electronic balance 4.

  Further, a temperature and humidity control chamber 10 communicating with the temperature and humidity chamber 1 is integrally provided on one side of the temperature and humidity chamber 1, and a heater 11 and a humidifier are provided in the temperature control chamber 10. 12 and a cooler 13 are provided, and the temperature and humidity adjusting means 14 is arranged to change and set the temperature and humidity in the temperature control chamber 10 to a desired temperature. An atmosphere having temperature and humidity is configured to be fed into the thermostatic chamber 1 by a fan 15 or the like that uniformly stirs the air in the thermostatic chamber provided on one side of the thermostatic chamber 1. .

  The heater 11, the humidifier 12, and the cooler 13 constituting the temperature / humidity adjusting means 14 are set so that the temperature / humidity of the atmosphere supplied into the constant temperature / humidity chamber 1 by the control device 16 becomes a predetermined temperature / humidity. Adjusted and controlled. The control device 16 is connected to the comparison operation circuit 9 in the central processing unit (CPU), and controls the temperature / humidity adjusting means 14 based on the calculated values of temperature and humidity output from the comparison operation circuit 9. It is configured as follows.

  The data recording device 8 in the central processing unit (CPU) is connected to a display device 17 such as a monitor.

  In order to measure the humidity control performance of the temperature control building material with the humidity control performance measuring apparatus configured in this way, first, a sample F of the humidity control building material made of a rectangular fiberboard or the like having a certain thickness is prepared. Then, after the moisture treatment of the sample F on all sides and the back surface is performed by sticking aluminum tape, the sample F is cured under a predetermined temperature and humidity condition, and the cured sample F has the same temperature and humidity as the curing. The sample F measured by the mass measuring instrument 7 at this time is placed on the electronic balance 4 in the temperature and humidity control chamber 2 adjusted to the same humidity atmosphere with the non-humidified surface facing upward. Is set to 0 g, and the set temperature and the set humidity that are targets for testing the humidity control performance are input to the comparison arithmetic circuit 9 of the central processing unit (CPU).

  This humidity conditioning performance test is performed based on JIS A 1470-1 (Humidity Response Method). The humidity conditions for the above curing are 33% for low humidity, 53% for medium humidity, and 75 for high humidity. In the moisture absorption process test, for example, the humidity setting is 75% in the middle humidity range. Then, while adjusting the temperature and humidity in the constant temperature and humidity chamber 1 so that the humidity adjustment measurement chamber 2 has the temperature during curing (set temperature) and the set humidity, the humidity of the sample F during curing is 53%. From the above, the mass per fixed time that changes due to moisture absorption is measured, and the quality of the humidity control performance is judged by the magnitude of the increase rate of the mass.

  At this time, the temperature and humidity in the constant temperature and humidity chamber 1 detected by the temperature sensor a and the humidity sensor b, and the temperature and humidity in the humidity control measurement chamber 2 detected by the temperature sensor c and the humidity sensor d are as follows: The temperature measuring devices A and C and the humidity measuring devices B and D are measured at regular intervals, for example, every minute, and the data values of the respective temperatures and humidity are sent to the comparison arithmetic circuit 9 of the central processing unit (CPU). On the other hand, the measurement data value of the temperature and humidity and the value of the set temperature and humidity are compared by the comparison operation circuit 9, and the temperature and humidity in the humidity control measurement chamber 2 are set to the above set temperature and humidity. The temperature and humidity from the temperature and humidity adjusting means 14 for adjusting the temperature and humidity in the tank 1 are calculated, and the value is input to the control device 16, and the temperature and humidity adjusting means 14 is adjusted to the temperature and humidity value to operate.

  In this case, an output signal of the calculated temperature / humidity value from the comparison operation circuit 9 is always input to the control device 16 every few minutes, but humidity measurement is detected by the temperature sensor c and the humidity sensor d. Adjust the temperature and humidity when the temperature and humidity in the chamber 2 are a certain percentage of the set temperature and set humidity. For example, if the temperature specified in JIS A1470-1 is within ± 0.5 ° C and the humidity is within ± 3%, The temperature and humidity in the constant temperature and humidity chamber 1 were adjusted with the temperature and humidity of the previous control value without changing the control value of the temperature and humidity from the means 14, and when the above value was exceeded, the value was below the value. Occasionally, the temperature and humidity control value of the temperature and humidity adjusting means 14 is changed by the comparison arithmetic circuit 9 so that the temperature and humidity in the constant temperature and humidity chamber 1 is adjusted to the changed temperature and humidity. In this case, in particular, by setting the above-mentioned certain ratio to a temperature of less than ± 0.5 ° C. and a humidity of less than 3%, preferably a temperature of about ± 0.2 to 0.3 ° C. and a humidity of about ± 0.5 to 1.5%. A Not only can the humidity control chamber 2 be controlled under environmental conditions where the temperature specified in 1470-1 is within ± 0.5 ° C and humidity is within ± 3.0%, and the temperature and humidity adjustment means 14 does not operate frequently. Therefore, there is less up and down shake, and very stable measurement is possible.

  Specifically, when the measured temperature / humidity in the humidity control measurement chamber detected by the temperature sensor c and the humidity sensor d exceeds the predetermined ratio with respect to the set temperature / humidity, the comparison operation circuit 9 The temperature difference between the measured temperature / humidity in the humidity control chamber 2 and the set temperature / humidity is calculated, and the temperature value in the constant temperature and humidity chamber 1 detected by the temperature sensor c and the humidity sensor d. The temperature value and the humidity value are calculated by subtracting the temperature difference value and the humidity difference value from the temperature value and the humidity value, respectively, and these temperature value and humidity value signals are input to the control device 16 and input by the control device 16. The temperature / humidity adjusting means 14 including the heater 11, the humidifier 12 and the cooler 13 is controlled and adjusted so as to be the temperature and humidity.

  Further, when the measured temperature and humidity in the humidity control measurement chamber detected by the temperature sensor c and the humidity sensor d are less than the predetermined ratio with respect to the set temperature and humidity, respectively, the comparison arithmetic circuit 9 sets the set temperature and humidity and the current temperature and humidity. The temperature difference between the measured temperature and humidity in the humidity control chamber 2 and the value of the humidity difference are calculated, and the temperature value and humidity value in the constant temperature and humidity chamber 1 detected by the temperature sensor c and the humidity sensor d at that time are calculated. The temperature value and the humidity value are calculated by adding the temperature difference value and the humidity difference value, respectively, and these temperature value and humidity value signals are input to the control device 16, and the heater 16 The temperature / humidity adjusting means 14 including the humidifier 12 and the cooler 13 is controlled and adjusted so as to be the temperature and humidity.

  In this way, the mass of the sample F placed on the electronic balance 4 under the temperature and humidity in the humidity control measurement chamber 2 that is automatically controlled and adjusted is measured by the mass measuring instrument 7 at regular intervals, for example, every 10 minutes. The measured value is input to the data recording device 8 of the central processing unit (CPU) and recorded and held. In this data recording device 8, the set temperature, set humidity and temperature / humidity in the constant temperature and humidity chamber 1 and humidity control chamber 2 measured at regular intervals from the comparison calculation circuit 9, the comparison calculation circuit 9. The temperature / humidity value obtained by the calculation process is also input, recorded and held, and the recorded data is displayed on the display device 17 and printing is possible.

Example 1
Next, the humidity control performance of the volcanic glassy multilayer board (made by Daiken Kogyo Co., Ltd., trade name: Saraia), which has been used as a humidity control building material, is measured using the humidity control performance measuring device. A specific control and adjustment method of temperature and humidity in the case of measurement will be described. This method was based on JIS A 1470-1 (humidity response method), and the humidity control performance in the middle humidity region was measured. First, the humidity control building material is cut to a size of 250 mm square to prepare a sample F. The sample F is coated with aluminum tape on the four sides and the back surface, and then moisture-removed. Cured for 48 hours at 53% humidity. Further, this cured sample F is placed on the electronic balance 4 in the humidity control chamber 2 in which the surface airflow is calibrated by the air supply fan 5 and the exhaust fan 6 in the humidity control performance measuring apparatus. And kept at the above temperature of 23 ° C. and humidity of 53% for 24 hours.

  The mass of the sample F at the start of the test measured by the mass measuring instrument 7 after holding is set to 0 g, and the target set temperature 23 ° C. and set humidity 75% are set in the comparison arithmetic circuit 9 of the central processing unit (CPU). Then, after starting the test, the temperature / humidity adjusting means 14 including the heater 11, the humidifier 12, and the cooler 13 is operated at a temperature and humidity equal to the set temperature and the set humidity, and the temperature is kept constant. By adjusting the atmosphere in the humidity chamber 1 to these temperatures and humidity, taking this atmosphere into the humidity control chamber 2 by the air supply fan 5, and exhausting it into the temperature and humidity chamber 1 by the exhaust fan 6, The temperature and humidity in the humidity control measurement chamber 2 are adjusted.

  Measurements by temperature measuring devices A and C and humidity measuring devices B and D having sensors a to d for detecting the temperature and humidity in the temperature and humidity chamber 1 and the humidity control chamber 2 are performed every minute. It is set to be input to the comparison arithmetic circuit 9 and to measure the mass of the sample F by the mass measuring instrument 7 every 10 minutes and input to the recording device of the central processing unit (CPU). Further, the temperature value and humidity value in the humidity control chamber 2 detected by the temperature sensor c and the humidity sensor d are + 0.3 ° C. and + 0.5% or more than the set temperature 23 ° C. and the set humidity 75%, respectively. When it becomes higher, the temperature difference value between the measured temperature value and the set temperature value in the humidity control measurement chamber 2 at that time, and the humidity difference value between the measured humidity value and the set humidity value are converted into the temperature value in the constant temperature and humidity chamber 1. The comparison arithmetic circuit 9 performs arithmetic processing so that the temperature value and the humidity value are respectively subtracted from the humidity value and the humidity value, and signals of these temperature value and humidity value are input to the control device 16 every 5 minutes. The adjusting means 14 is configured to be controlled.

  Similarly, the temperature value and humidity value in the humidity control chamber 2 detected by the temperature sensor c and the humidity sensor d are lower by 0.3 ° C. and 0.5% or more than the set temperature 23 ° C. and the set humidity 75%, respectively. The temperature difference value between the set temperature value and the measured temperature value in the humidity control chamber 2 at that time, and the humidity difference value between the set humidity value and the measured humidity value in the humidity control chamber 2 at that time Is calculated by the comparison operation circuit 9 so that the temperature value and the humidity value respectively added to the temperature value and the humidity value in the constant temperature and humidity chamber 1 are obtained, and signals of these temperature value and humidity value are controlled by the control device 16. The temperature / humidity adjusting means 14 is controlled every 5 minutes. Therefore, the difference between the temperature value in the humidity control chamber 2 and the set temperature value is within ± 0.3 ° C, and the difference between the humidity value in the humidity control chamber 2 and the set humidity value is within ± 0.5% The temperature and humidity in the constant temperature and humidity chamber 1 is not changed by the temperature and humidity adjusting means 14.

  As a result of the humidity measurement of the sample F under such setting conditions, the measurement temperature in the humidity measurement chamber 2 measured by the temperature measuring device C after 5 minutes from the measurement was 23.2 ° C., and the humidity measuring device D was used. The measured humidity in the humidity control chamber 2 was 69.6%. In this case, the measured temperature is 0.2 ° C higher than the set temperature, but is not changed because it is within the range of ± 0.3 ° C. However, the measured humidity is 5.4% lower than the set humidity. In addition to%, a signal is sent from the comparison arithmetic circuit 9 to the control device 16 so that the humidity in the constant temperature and humidity chamber 1 measured by the humidity measuring device B is 80.4%, and the constant temperature and humidity by the temperature and humidity adjusting means 14 It controls and adjusts so that the humidity in the tank 1 becomes the value.

  Next, 10 minutes after the start of measurement, the measured temperature in the humidity control chamber 2 by the temperature measuring device C was 23.1 ° C., and the measured humidity in the humidity control chamber 2 by the humidity measuring device D was 75.6%. In the same way as above, the humidity is adjusted and changed to 79.8%, and the measured temperature in the humidity control chamber 2 after 15 minutes is 23.0 ° C and the measured humidity is 74%, so the humidity is adjusted and changed to 80.8%. The Similarly, the temperature and humidity in the constant temperature and humidity chamber 1 are adjusted every 5 minutes to bring the temperature and humidity in the humidity control chamber 2 close to the set temperature and set humidity in a short time, and the temperature and humidity. The humidity control test of Sample F was performed while maintaining the above constant for a long time. The humidity control performance curve obtained from the experimental results is shown in FIG.

  As can be seen from FIG. 2, the humidity in the humidity control chamber 2 can be adjusted to the vicinity of the set humidity in about 15 minutes after the start of the test, and then the test is completed for 480 minutes. Humidity adjustment tests are performed while maintaining the same or very close humidity as the set humidity.

(Example 2)
As with Example 1 above, the wall material made of gypsum board with a thickness of 12 mm is covered with a vinyl cloth in the same way as in Example 1 above. Wet performance was measured. First, a sample F was prepared by cutting a gypsum board with a vinyl cloth on the surface to a size of 250 mm square, and the sample F was coated with aluminum tape on its four sides and moisture-proofed. After that, it was cured for 48 hours under conditions of a temperature of 23 ° C. and a humidity of 53%. Further, this cured sample F is placed on the electronic balance 4 in the humidity control chamber 2 in which the surface airflow is calibrated by the air supply fan 5 and the exhaust fan 6 in the humidity control performance measuring apparatus. And kept at the above temperature of 23 ° C. and humidity of 53% for 24 hours.

  The mass of the sample F at the start of the test measured by the mass measuring instrument 7 after holding is set to 0 g, and the target set temperature 23 ° C. and set humidity 75% are set in the comparison arithmetic circuit 9 of the central processing unit (CPU). While inputting, the measurement method of temperature and humidity in the constant temperature and humidity chamber 1 and the humidity control chamber 2 and the control method such as temperature and humidity control change in the constant temperature and humidity chamber 1 are the same as in the first embodiment. The humidity control of Sample F was performed.

  Five minutes after starting the measurement, the temperature measured in the humidity control chamber 2 by the temperature measuring device C was 22.9 ° C., and the humidity measured in the humidity control chamber 2 by the humidity measuring device D was 74.7%. In this case, the difference between the measured temperature and the set temperature is within ± 0.3 ° C, and the difference between the measured humidity and the set humidity is within ± 0.5%. Absent. Next, 10 minutes after starting the measurement, the measurement temperature in the humidity control chamber 2 by the temperature measuring device C is 22.9 ° C., the measured humidity in the humidity control chamber 2 by the humidity measuring device D is 74.7%, 15 Since the measurement temperature in the humidity control chamber 2 after 2 minutes was 22.8 ° C. and the humidity measured in the humidity control chamber 2 by the humidity measuring device D was 75.0%, the setting is not changed as described above.

  Furthermore, 20 minutes after starting the measurement, the measurement temperature in the humidity control chamber 2 was 22.7 ° C and the measurement humidity was 74.9%, so only the temperature in the constant temperature and humidity chamber 1 was increased from 23.0 ° C to 23.3 ° C. 25 minutes after starting the measurement, the measurement temperature in the humidity control chamber 2 was 22.9 ° C and the measurement humidity was 77.0%, so only the humidity in the constant temperature and humidity chamber 1 was 79.7% to 77.7 The setting is changed to%. Similarly, the temperature and humidity in the constant temperature and humidity chamber 1 are adjusted every 5 minutes to bring the temperature and humidity in the humidity control chamber 2 close to the set temperature and set humidity in a short time, and the temperature and humidity. The humidity control test of Sample F was performed while maintaining the above constant for a long time. The humidity control performance curve obtained from the experimental results is shown in FIG.

  As is apparent from FIG. 3, the humidity in the humidity control chamber 2 can be adjusted to the vicinity of the set humidity in about 15 minutes after the start of the test, and then the test is completed for 480 minutes. Humidity adjustment tests are performed while maintaining the same or very close humidity as the set humidity.

A simplified diagram of a temperature and humidity adjustment device. The humidity-control performance curve figure which shows the moisture-absorption test result of humidity-control building materials. The humidity-control performance curve figure which shows the moisture-absorption test result of another humidity-control building material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Constant temperature and humidity chamber 2 Humidity adjustment measurement room 3 Windshield 4 Electronic balance 5 Air supply fan 6 Exhaust fan 7 Mass measuring device 8 Data recording device 9 Comparison arithmetic circuit
14 Temperature / humidity adjustment means
16 Controller A. C Temperature measuring instrument B, D Humidity measuring instrument F Sample

Claims (4)

  This is a temperature / humidity adjustment method for humidity control performance testing of humidity-controlled building materials in a temperature / humidity chamber, and the temperature and humidity are adjusted and adjusted by temperature / humidity adjustment means for heating, cooling and humidification. Measure the temperature and humidity in the humidity chamber and the temperature and humidity in the humidity control chamber surrounded by the draft shield provided in the temperature and humidity chamber, and input the temperature and humidity in the humidity control chamber to the central processing unit. Humidity measurement by comparing and calculating this temperature and humidity with the set temperature and humidity that is the target when performing the humidity control performance test that has been input to the central processing unit in advance by the comparison processing circuit of the central processing unit. The temperature / humidity of the atmosphere supplied from the temperature / humidity adjusting means to the constant temperature / humidity chamber is changed by the control device so that the indoor temperature / humidity becomes the set temperature / humidity, thereby adjusting the temperature / humidity in the constant temperature / humidity chamber. A method for adjusting temperature and humidity in a humidity control apparatus for measuring humidity characteristics.   When the measured temperature and measured humidity in the humidity control chamber exceed a certain percentage of the set temperature and set humidity, respectively, the temperature difference value between the measured temperature value and the set temperature value at that time The temperature / humidity adjusting means is controlled by the control device so that the humidity value between the measured humidity value and the set humidity value is subtracted from the temperature value and humidity value in the constant temperature and humidity chamber, respectively. When the measured temperature value and the measured humidity value in the humidity control chamber are less than a certain percentage of the set temperature value and the set humidity value, the temperature difference value between the set temperature value and the measured temperature value is set. The temperature / humidity adjusting means is controlled by the control device so that the humidity value between the humidity value and the measured humidity value is added to the temperature value and humidity value in the thermostatic chamber. The temperature / humidity adjustment method in the humidity control performance measuring apparatus according to claim 1 .   A constant temperature and humidity chamber having a humidity measurement chamber surrounded by a windshield, and a ventilation device for adjusting the ventilation rate in the humidity measurement chamber to a constant level and providing a constant wind speed to the sample surface in the humidity measurement chamber; A temperature and humidity measuring device having a sensor for detecting the temperature and humidity in the humidity control chamber, a temperature and humidity measuring device having a sensor for detecting the temperature and humidity in the constant temperature and humidity chamber outside the windshield, and the constant temperature and humidity chamber Temperature / humidity adjusting means for heating, cooling, and humidifying, a fan that uniformly stirs the air in the constant temperature and humidity chamber, and the set temperature that is the target temperature when the humidity in the humidity control chamber performs humidity control In a humidity control device comprising a controller for controlling the temperature and humidity adjustment means so as to be humidity, a central processing unit for inputting a set temperature and humidity as a target when performing the humidity control test is provided. Temperature and humidity measurement of the humidity control chamber in this central processing unit And the control unit of the central processing unit, the difference between the set temperature / humidity value and the temperature / humidity measurement value in the humidity control chamber is compared and calculated at regular intervals, and the temperature in the humidity control chamber is The controller is configured to adjust the temperature and humidity in the constant temperature and humidity chamber by changing the temperature and humidity of the atmosphere supplied from the temperature and humidity adjustment means to the constant temperature and humidity chamber so that the humidity becomes the set temperature and humidity. A temperature / humidity adjusting apparatus in a humidity control apparatus for measuring humidity characteristics.   A mass measuring device that detects the mass value of the sample at regular intervals is connected to an electronic balance that measures the mass of the sample of the humidity control building material installed in the humidity control chamber, and the mass measuring device is data of the central processing unit. Connect to a recording device, and connect a comparison operation circuit to this data recording device to display the humidity value and the set temperature and humidity in the humidity control chamber and the constant temperature and humidity chamber together with the mass value, and at regular intervals. 4. The temperature / humidity adjusting device in the humidity control device according to claim 3, wherein the temperature / humidity adjusting device is configured to record.

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