JP2006078018A - Portable air circulation temperature and humidity system for display cases - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constant temperature and humidity system capable of easily remodeling an existing display case having no temperature and humidity management function into a display case capable of managing temperature and humidity at a constant level.
An opening of a display case 2 is closed with a sealing panel 4, and the air conditioning unit 10 is connected to both the ducts through the intake ducts 12 and 14 and the air ducts 16 and 18, respectively. The air conditioning unit 10 includes an air circulation device 42, a cooling device 40, and a heating device 44, and a humidifying device 20 inside or outside the air conditioning unit 10. The temperature control device 30 controls the heating device 44 based on the temperature information in the display case 2 detected by the temperature sensors 34 and 36, and the humidity control device 32 detects the display case detected by the humidity sensor 38. The humidifying device 20 is controlled based on the humidity information in 2.
[Selection] Figure 1

Description

  The present invention relates to a constant temperature and humidity system for managing temperature and humidity in a display case for displaying materials arranged in a facility such as a museum or a museum.

The museum contains valuable materials collected from countries around the world, some of which are on display in the exhibition hall. Some materials are made of organic materials such as wood, leather, and paper that are sensitive to changes in temperature and humidity, and some materials require special temperature or humidity settings. There may be a need for a display case that can control humidity. Conventionally, when displaying materials that require temperature and humidity management, a dedicated display case as disclosed in Patent Document 1 has been installed.
JP-A-8-238149

  In addition to permanent materials that are permanently displayed, there are materials that are temporarily displayed at special exhibitions. Even for permanent materials, the exhibition method may be temporarily changed at a special exhibition. For example, in a special exhibition, materials are displayed by a method according to the content of the plan, and an exhibition case according to the display method is prepared. In this case, if a dedicated display case is newly installed at each planned exhibition, the cost increases, and the necessary preparation period becomes longer as much installation work is required. In addition, since the dedicated display case disclosed in Patent Document 1 has a restriction on the installation place, there is also a disadvantage that the display method is limited due to the restriction of the installation place.

  The present invention has been made in order to solve the above-described problems, and an existing display case that does not have a temperature and humidity management function can be easily remodeled into a display case that can maintain temperature and humidity at a constant level. An object is to provide a constant humidity system.

In order to achieve the above object, the first invention is a constant temperature and humidity system for maintaining a constant temperature and humidity in the display case,
A sealing panel for sealing the inside of the display case by closing the opening of the display case;
An air conditioning unit disposed outside the display case;
An air intake duct arranged through the sealing panel and connecting the inside of the display case and the air inlet of the air conditioning unit;
An air duct arranged through the sealing panel and connecting the inside of the display case and the air outlet of the air conditioning unit;
An air circulation device that constitutes the air conditioning unit, sucks air from the intake duct and blows it to the blower duct,
A cooling device that constitutes the air conditioning unit and cools and dehumidifies the air taken in from the intake duct to a predetermined temperature;
A heating device that constitutes the air conditioning unit and heats the air cooled by the cooling device;
A humidifying device for humidifying the air heated by the heating device;
A temperature sensor for detecting the temperature in the display case;
A humidity sensor for detecting the humidity in the display case;
A temperature control device that controls the heating device so as to keep the temperature in the display case constant based on temperature information from the temperature sensor;
A humidity controller for controlling the humidifier so as to keep the humidity in the display case constant based on humidity information from the humidity sensor;
It is characterized by having.

  According to a second invention, in the first invention, the humidifier is an ultrasonic humidifier connected to the air conditioning unit or the air duct by a hose, and supplies steam through the hose.

  According to a third invention, in the first or second invention, the moisture dehumidified by the cooling device is used for humidification by the humidifying device.

  According to the first aspect of the present invention, the temperature and humidity can be controlled at a constant level by simply closing the opening of the display case with the sealing panel and connecting the air conditioning unit to both ducts through the intake duct and the air duct. Can be modified to a case. Therefore, the cost can be reduced compared to the case where a dedicated display case is installed, and the preparation period can be shortened. In addition, since only a constant temperature and humidity system is attached to an existing display case, there are few restrictions on the installation place like a dedicated display case, and the display case can be installed in an arbitrary place. Furthermore, after the exhibition period ends, the sealing panel is removed from the opening of the display case, the intake duct and the air duct are removed from the sealing panel, and both ducts are removed from the air conditioning unit, making it easy to carry around. Can be broken down into The decomposed temperature and humidity system can be reused to modify another display case. Moreover, according to the first invention, the air in the display case circulates without leaking to the outside, so that the influence of the operation of the constant temperature and humidity system on the outside can be suppressed.

  According to 2nd invention, a vapor | steam can be supplied to a place far away by using an ultrasonic humidifier as a humidifier. Moreover, since the hose is used for the connection between the humidifier and the air conditioning unit or the air duct, the degree of freedom in installing the humidifier is high. Therefore, according to the 2nd invention, a humidifier can be installed in arbitrary places.

  According to the third invention, the moisture dehumidified by the cooling device is used for humidification by the humidifying device, so that it is not necessary to supply water to the humidifying device during operation of the system. Therefore, the display case can be installed at an arbitrary place without being restricted by the position or presence of the water supply equipment.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 is a diagram showing a configuration of a constant temperature and humidity system as an embodiment of the present invention. In FIG. 1, the display case in which the constant temperature and humidity system is mounted is shown from the front. FIG. 2 is a bird's-eye view of the display case on which the constant temperature and humidity system shown in FIG. 1 is mounted as viewed from above.

  As shown in the figure, the constant temperature and humidity system of the present embodiment includes a sealing panel 4 that partitions the inside of the display case 2. The display case has an opening in a part thereof, but the display case 2 shown in FIG. 1 has an opening in the ceiling. The sealing panel 4 closes the opening of the display case 2 to form a sealed space 6 inside the display case 2. The materials to be displayed are arranged in this sealed space 6 (not shown).

  An air conditioning unit 10 constituting a constant temperature and humidity system is disposed on the ceiling of the display case 2. Air intake ducts 12 and 14 communicating with the sealed space 6 of the display case 2 are connected to the air inlet of the air conditioning unit 10. The intake ducts 12 and 14 include a detachable first intake duct 12 and a second intake duct 14, and the first intake duct 12 is disposed on the ceiling portion of the display case 2 and connected to the intake port of the air conditioning unit 10. . The second intake duct 14 is attached so as to hang down from the first intake duct 12 into the display case 2, penetrates the sealing panel 4 and protrudes into the sealed space 6 with its tip protruding. The through hole through which the second intake duct 14 of the sealing panel 4 passes is sealed to block air leakage. The first intake duct 12 and the air conditioning unit 10 are detachable, and the second intake duct 14 and the sealing panel 4 are also detachable.

  In addition, air ducts 16 and 18 communicating with the sealed space 6 of the display case 2 are connected to the air outlet of the air conditioning unit 10. The air ducts 16 and 18 include a detachable first air duct 16 and a second air duct 18, and the first air duct 16 is disposed on the ceiling portion of the display case 2 and connected to the air outlet of the air conditioning unit 10. . The second air duct 18 is attached so as to hang down from the first air duct 16 into the display case 2, penetrates the sealing panel 4 and protrudes into the sealed space 6 with its tip protruding. The through hole through which the second air duct 18 of the sealing panel 4 passes is sealed to block air leakage. The first air duct 16 and the air conditioning unit 10 are detachable, and the second air duct 18 and the sealing panel 4 are also detachable.

  FIG. 3 is a schematic diagram showing the configuration of the air conditioning unit 10. As shown in the figure, an air circulation fan 42 is disposed in the air conditioning unit 10. When the air circulation fan 42 is operated, air is blown from the air conditioning unit 10 to the sealed space 6 via the blower ducts 16 and 18, and is again taken into the air conditioning unit 10 via the intake ducts 12 and 14. A circulation line is formed.

  A refrigerator 40 is disposed upstream of the air circulation fan 42 in the air conditioning unit 10. The refrigerator 40 is a device that cools the air taken in from the sealed space 6 to a predetermined temperature (for example, 10 ° C.). By cooling, the dew point of the air decreases and moisture in the air condenses. By removing the condensed moisture as a drain, the air is dehumidified to a certain absolute humidity.

  A heating heater 44 and a humidifying pipe 46 are sequentially arranged downstream of the air circulation fan 42 in the air conditioning unit 10. The air that has been cooled and dehumidified by the refrigerator 40 is first heated when it passes through the heating heater 44 to be heated again. The heated air is humidified by supplying steam when passing through the humidifying pipe 46.

  In the constant temperature and humidity system of the present embodiment, the steam supplied to the air in the humidifying pipe 46 is generated by the ultrasonic humidifier 20 disposed outside the air conditioning unit 10. The ultrasonic humidifier 20 is a device that atomizes water by vibration caused by ultrasonic waves, and can generate extremely fine vapor (mist). The ultrasonic humidifier 20 and the air conditioning unit 10 are connected by one to four (one in the figure) humidifying hoses 24, and steam is supplied from the ultrasonic humidifier 20 to the air conditioning unit 10 through the humidifying hose 24. . The water atomized in the ultrasonic humidifier 20 is stored in a water supply tank 22 attached to the ultrasonic humidifier 20. In the constant temperature and humidity system of the present embodiment, the water supply tank 22 and the refrigerator 40 of the air conditioning unit 10 are connected by a drain hose 26. Moisture (drain) dehumidified from the air by the refrigerator 40 is collected in the water supply tank 22 through the drain hose 26, atomized by the ultrasonic humidifier 20 again, and used for air humidification.

  As described above, the constant temperature and humidity system of the present embodiment includes the sealing panel 4, the first intake duct 12, the second intake duct 14, the first air duct 16, the second air duct 18, the air conditioning unit 10, and the super Each component of the sonic humidifier 20 is configured. Since each of these parts is small and light and can be carried, it is easy to attach the constant temperature and humidity system to the display case 2. Therefore, according to the constant temperature and humidity system of the present embodiment, the existing display case 2 can be easily remodeled into a display case in which the temperature and humidity can be managed constant. Furthermore, after the exhibition period ends, the constant temperature and humidity system can be removed from the display case 2 and disassembled into parts, so that it can be reused for remodeling another display case.

  In addition, the constant temperature and humidity system is simply attached to the existing display case 2, and the components that make up the constant temperature and humidity system are small and light, and can be carried around. There are few restrictions. Since the condensed water generated in the refrigerator 40 is circulated and reused as the humidifying water for the ultrasonic humidifier 20, it is not necessary to replenish the humidifying water during the operation of the system. There are no restrictions. In addition, since flexible hoses 24 and 26 are used to connect the ultrasonic humidifier 20 and the air conditioning unit 10, the degree of freedom of installation of the ultrasonic humidifier 20 is high, and the ultrasonic humidifier. Since the steam generated at 20 is very fine, it is possible to supply steam to a remote place. That is, the installation location of the display case 2 is not restricted by the installation location of the ultrasonic humidifier 20. Furthermore, when using a generator (2kW, about 30A) as a power supply of the air conditioning unit 10 or the ultrasonic humidifier 20, there is no restriction on the position or presence of the facility-side power supply. Therefore, according to the constant temperature and humidity system of this embodiment, the display case 2 can be installed in an arbitrary place.

  Next, temperature control in the sealed space 6 by the constant temperature and humidity system of the present embodiment will be described. The air taken into the air conditioning unit 10 from the sealed space 6 is cooled to about 10 ° C. by the refrigerator 40, heated by the heating heater 44, and then returned to the sealed space 6 again. Therefore, the temperature in the sealed space 6 can be appropriately adjusted by controlling the operation of the heating heater 44 by the temperature controller 30. Connected to the temperature controller 30 are temperature sensors 34 and 36 arranged at two locations in the sealed space 6. The temperature controller 30 controls the operation of the heating heater 44 based on the temperature information in the sealed space 6 output from the temperature sensors 34 and 36. The two temperatures in the sealed space 6 measured by the temperature sensors 34 and 36 are respectively displayed on the display unit of the temperature controller 30.

  As a control method of the operation of the heating heater 44 by the temperature controller 30, two control methods of control by proportional operation and control by switch switching operation can be selected. In the proportional operation, the temperature controller 30 adjusts the electrical output supplied to the heating heater 44 in proportion to the difference between the set temperature and the measured temperature in the sealed space 6, and changes the heater capacity of the heating heater 44. The temperature in the sealed space 6 is controlled in the vicinity of the set temperature. The set temperature can be set arbitrarily, and the ratio of changing the electrical output with respect to the difference between the set temperature and the measured temperature can also be set arbitrarily.

  On the other hand, in the switch switching operation, the temperature controller 30 turns off the heating heater 44 when the measured temperature in the sealed space 6 exceeds the upper limit temperature, and when the measured temperature falls below the lower limit temperature. By turning on the heater 44, the temperature in the sealed space 6 is controlled in the range from the lower limit temperature to the upper limit temperature. The upper limit temperature and the lower limit temperature can be arbitrarily set. In the switch switching operation, the measured temperature of either one of the two temperature sensors 34 and 36 may be compared with the upper limit temperature and the lower limit temperature, or both may be compared.

  Further, the temperature controller 30 has an alarm function for notifying the temperature abnormality in the sealed space 6 in addition to the above-described temperature control function. The temperature controller 30 outputs an alarm signal when the temperature measured by the temperature sensors 34 and 36 is equal to or higher than the upper limit alarm temperature, or when the measured temperature is equal to or lower than the lower limit alarm temperature. The upper limit alarm temperature and the lower limit alarm temperature can be arbitrarily set in the range of −50 ° C. to 50 ° C.

  Next, humidity control in the sealed space 6 by the constant temperature and humidity system of the present embodiment will be described. The air sucked from inside the sealed space 6 is dehumidified by the refrigerator 40, and then is humidified by the steam supplied from the ultrasonic humidifier 20 and then returned to the sealed space 6. Therefore, by controlling the operation of the ultrasonic humidifier 20 by the humidity controller 32, the humidity in the sealed space 6 can be adjusted as appropriate. A humidity sensor 38 disposed in the sealed space 6 is connected to the humidity controller 32. The humidity controller 32 controls the operation of the ultrasonic humidifier 20 based on the humidity information in the sealed space 6 output from the humidity sensor 38. The humidity in the sealed space 6 measured by the humidity sensor 38 is displayed on the display unit of the humidity controller 32.

  As a control method of the operation of the ultrasonic humidifier 20 by the humidity controller 32, two control methods, control by proportional operation and control by switch switching operation, can be selected. In the proportional operation, the humidity controller 32 adjusts the electrical output supplied to the ultrasonic humidifier 20 in proportion to the difference between the set humidity and the humidity measured by the humidity sensor 38, and changes the humidification capacity of the ultrasonic humidifier 20. Thus, the humidity in the sealed space 6 is controlled in the vicinity of the set humidity. The set humidity can be arbitrarily set in the range of 0.1% to 100%, and the ratio of changing the electrical output with respect to the difference between the set humidity and the measured humidity can also be set arbitrarily.

  On the other hand, in the switch switching operation, the humidity controller 32 turns off the ultrasonic humidifier 20 when the humidity measured by the humidity sensor 38 is higher than the upper limit humidity, and when the measured humidity is lower than the lower limit humidity. By turning on the ultrasonic humidifier 20, the humidity in the sealed space 6 is controlled in the range from the lower limit humidity to the upper limit humidity. The upper limit humidity and the lower limit humidity can be arbitrarily set. In addition, in order to prevent an operation gap in which excessive steam is discharged for several seconds after the operation of the ultrasonic humidifier 20 is stopped, an electromagnetic wave that closes at the same time as the power is turned off is supplied to the vapor outlet of the ultrasonic humidifier 20. There is a valve.

  By performing the temperature control and the humidity control as described above, according to the constant temperature and humidity system of the present embodiment, the inside of the sealed space 6 of the display case 2 can be controlled to a constant temperature and humidity with a simple structure. it can. In particular, since two temperature sensors 34 and 36 installed at arbitrary locations in the sealed space 6 are used for temperature control, precise temperature management is performed while checking the temperature difference between the two points in the sealed space 6. be able to. Moreover, since the humidity sensor 38 can also be installed in any place according to the situation, it is possible to perform precise humidity management as in the temperature control.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the following modifications may be made.

  In the above embodiment, the constant temperature and humidity system is mounted on the upper part of the display case 2, but it may be the side part of the display case 2 or the lower part of the display case 2. Alternatively, it may be arranged away from the display case 2. The arrangement position of the constant temperature and humidity system may be determined according to the structure of the display case 2 and the display method of the materials to be displayed.

  In the above embodiment, one second intake duct 14 hangs down from the first intake duct 12 and one second air duct 18 hangs down from the first air duct 16. Accordingly, the number of second intake ducts 14 and second air ducts 18 may be increased.

  Moreover, although the ultrasonic humidifier 20 is arrange | positioned outside the air conditioning unit 10 in the said embodiment, you may incorporate the ultrasonic humidifier 20 in the air conditioning unit 10 similarly to the heating heater 44 grade | etc.,. When the ultrasonic humidifier 20 is disposed outside the air conditioning unit 10, the connection destination of the humidification hose 24 may be the air ducts 16 and 18.

  In the above embodiment, the temperature controller 30 and the humidity controller 32 are provided separately, but they may be configured integrally. For example, the temperature control function of the temperature controller 30 and the humidity control function of the humidity controller 32 may both be realized as one function of a personal computer. Moreover, in the said embodiment, although the temperature of two places in the sealed space 6 is measured, one place may be sufficient and the temperature of many places may be measured. Similarly, the humidity may be measured at a plurality of locations.

It is a figure which shows the structure of the constant temperature and humidity system as embodiment of this invention. It is the bird's-eye view which looked at the display case carrying the constant temperature and humidity system shown in FIG. 1 from upper direction. It is the schematic which shows the structure of an air conditioning unit.

Explanation of symbols

2 Display case 4 Sealing panel 6 Sealed space 10 Air conditioning unit 12 First intake duct 14 Second intake duct 16 First air duct 18 Second air duct 20 Ultrasonic humidifier 22 Water supply tank 24 Humidification hose 26 Drain hose 30 Temperature controller 32 Humidity controller 34, 36 Temperature sensor 38 Humidity sensor

Claims (3)

A constant temperature and humidity system for maintaining the temperature and humidity in the display case at a constant level,
A sealing panel for sealing the inside of the display case by closing the opening of the display case;
An air conditioning unit disposed outside the display case;
An air intake duct arranged through the sealing panel and connecting the inside of the display case and the air inlet of the air conditioning unit;
An air duct arranged through the sealing panel and connecting the inside of the display case and the air outlet of the air conditioning unit;
An air circulation device that constitutes the air conditioning unit, sucks air from the intake duct and blows it to the blower duct,
A cooling device that constitutes the air conditioning unit and cools and dehumidifies the air taken in from the intake duct to a predetermined temperature;
A heating device that constitutes the air conditioning unit and heats the air cooled by the cooling device;
A humidifying device for humidifying the air heated by the heating device;
A temperature sensor for detecting the temperature in the display case;
A humidity sensor for detecting the humidity in the display case;
A temperature control device that controls the heating device so as to keep the temperature in the display case constant based on temperature information from the temperature sensor;
A humidity controller for controlling the humidifier so as to keep the humidity in the display case constant based on humidity information from the humidity sensor;
A constant temperature and humidity system comprising:   The constant temperature and humidity system according to claim 1, wherein the humidifier is an ultrasonic humidifier connected to the air conditioning unit or the air duct by a hose and supplies steam through the hose.   The constant temperature and humidity system according to claim 1 or 2, wherein the moisture dehumidified by the cooling device is used for humidification by the humidifying device.

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