JP2020180937A - Environment test room and air conditioning system - Google Patents

Abstract

To reduce the influence of the radiant heat radiated from a floor surface, etc.SOLUTION: An environment test room 2 comprises: a supply port 2in to which an air-conditioning air of prescribed temperature is supplied at a prescribed wind speed; an exhaust port 2out which is arranged facing the supply port, and from which the air-conditioning air is ejected; a flow path 101 which is arranged between the support port and the exhaust port, and through which the air-conditioning air passes; an installation unit 102 which is arranged near the center of the flow path, and in which a measurement object for optical measurement is installed; a rectification member (curtain 103) for rectifying the air current of the air-conditioning air and arranged between a side wall face of the flow path and the installation unit; and a stool 104 the surface of which can be heated/cooled. The side wall face of the flow path and the rectification member are arranged in parallel to the air current direction of the air-conditioning air flowing from the support port toward the exhaust port. The stool is arranged on a floor.SELECTED DRAWING: Figure 2

Description

The present invention relates to an environmental test laboratory and an air conditioning system.

Conventionally, in order to perform high-precision measurement of optical instruments in an atmospheric pressure environment, an environmental test room that stabilizes the measurement environment by air conditioning control and an air conditioning system using the environmental test room have been proposed.

The environmental test room is required to reduce the influence of radiant heat radiated from the wall surface. Therefore, in Patent Document 1 (unpublished at the time of filing the present invention), the present inventors have arranged an object (optical) for optical measurement arranged near the side wall surface of the flow path portion through which the conditioned air passes and the center of the flow path portion. We proposed an environmental test room with a configuration in which a rectifying member that rectifies the air flow of conditioned air is placed between the installation part of the equipment).

Japanese Patent Application No. 2018-198731 (unpublished at the time of filing the present invention)

The environmental test laboratory proposed in Patent Document 1 (unpublished at the time of filing the present invention) improved the influence of radiant heat radiated from the side wall surface, but the influence of radiant heat radiated from the floor surface and the like. There was room for improvement.

The present invention has been made to solve the above-mentioned problems, and its main purpose is to provide an environmental test room that reduces the influence of radiant heat radiated from a floor surface or the like, and an air conditioning system. To do.

In order to achieve the above object, the present invention is an environmental test room, in which a supply port to which air-conditioned air of a predetermined temperature is supplied at a predetermined wind speed and a discharge port which is arranged to face the supply port and discharges the conditioned air. An installation unit arranged between the outlet, the supply port and the discharge port, through which the conditioned air passes, and near the center of the flow path portion, where an object to be measured for optical measurement is installed. A rectifying member arranged between the side wall surface of the flow path portion and the installation portion to rectify the air flow of the conditioned air, and a platen capable of heating and cooling the surface of the flow path portion. The side wall surface and the rectifying member are arranged so as to be parallel to the flow direction of the conditioned air flowing from the supply port to the discharge port, and the platen is arranged on the floor. ..
Other means will be described later.

According to the present invention, the influence of radiant heat radiated from the floor surface or the like can be reduced.

It is explanatory drawing which shows the schematic structure of the whole air conditioning system including the environmental test room which concerns on Embodiment 1. FIG. It is a perspective view which shows the schematic structure of the environmental test laboratory which concerns on Embodiment 1. FIG. It is a top view which shows the schematic structure of the environmental test laboratory which concerns on Embodiment 1. FIG. It is a side sectional view which shows the schematic structure of the environmental test laboratory which concerns on Embodiment 1. FIG. It is a back view which shows the schematic structure of the environmental test room which concerns on Embodiment 1. FIG. It is explanatory drawing which shows the relationship between the amount of heat conduction, the amount of heat transfer, and the amount of radiant heat in an environmental test room. It is explanatory drawing (1) which shows the relationship between the amount of heat transfer and the amount of radiant heat. It is explanatory drawing (2) which shows the relationship between the amount of heat transfer and the amount of radiant heat. It is a schematic diagram for demonstrating the size of an object. It is a graph which shows the relationship between the temperature difference between an object and air, and the temperature difference between a wall surface and an object. It is explanatory drawing which shows the temperature relation of the environmental test room which concerns on Embodiment 1. FIG. It is a top view which shows the schematic structure of the environmental test laboratory which concerns on Embodiment 2. It is a temperature distribution map near the side wall surface of the flow path portion in the environmental test room according to the second embodiment. It is a top view which shows the schematic structure of the environmental test laboratory which concerns on Embodiment 3. It is a side sectional view which shows the schematic structure of the environmental test laboratory which concerns on Embodiment 3. It is a back view which shows the schematic structure of the environmental test room which concerns on Embodiment 4. It is explanatory drawing of the tent-shaped rectifying member used in Embodiment 4. It is a top view which shows the schematic structure of the environmental test laboratory which concerns on Embodiment 4. It is a side sectional view which shows the schematic structure of the environmental test laboratory which concerns on Embodiment 4. FIG. It is explanatory drawing of the crane which concerns on the modification. It is a rear view which shows the schematic structure of the environmental test laboratory which concerns on another modification. It is a top view which shows the schematic structure of the environmental test laboratory which concerns on another modification. It is a side sectional view which shows the schematic structure of the environmental test laboratory which concerns on another modification. It is a partial cross-sectional view (1) of a plate member used in another modification. It is a partial cross-sectional view (2) of a plate member used in another modification. It is a partial cross-sectional view (3) of a plate member used in another modification. It is explanatory drawing of the plate member used in another modification. It is a perspective view which shows the schematic structure of the plate member used in another modification. It is a perspective view which shows the arrangement example of the plate member used in another modification. It is a top view which shows the arrangement example of the plate member used in another modification.

Hereinafter, embodiments of the present invention (hereinafter, referred to as “the present embodiment”) will be described in detail with reference to the drawings. In addition, each figure is only shown schematicly to the extent that the present invention can be fully understood. Therefore, the present invention is not limited to the illustrated examples. Further, in each figure, common components and similar components are designated by the same reference numerals, and duplicate description thereof will be omitted.

[Embodiment 1]
<Configuration of the entire air conditioning system including the environmental test room>
Hereinafter, the configuration of the entire air conditioning system including the environmental test room according to the first embodiment will be described with reference to FIG. FIG. 1 is an explanatory diagram showing a schematic configuration of the entire air conditioning system including the environmental test room according to the first embodiment.

As shown in FIG. 1, the air conditioning system 1 includes a dehumidifying unit 3, a dry air temperature control unit 4, a dry air heating unit 5, a circulation flow path 6, a blower 41, heaters 51, 54, a heat storage body 55, and the like. There is. The air conditioning system 1 harmonizes the air discharged from the discharge port 2out of the environmental test room 2 through the circulation flow path 6 and returns it to the supply port 2in of the environmental test room 2 to circulate the conditioned air in the system. ..

The dehumidifying unit 3 is provided with a dehumidifier such as a desiccant air conditioner 30, and sends dry air obtained by dehumidifying the air discharged from the environmental test room 2 mixed with outside air to the dry air temperature control unit 4. .. The dry air temperature control unit 4 regulates the dry air sent from the dehumidifying unit 3 to a temperature slightly lower than the set air temperature inside the environmental test room 2, and sends the air to the dry air heating unit 5. The dry air heating unit 5 heats up to the set air temperature inside the environmental test chamber 2 and sends air into the environmental test chamber 2.

Here, the inside of the environmental test room 2 is shielded from the outside air by an outer wall made of a heat insulating panel or the like. Only the air conditioned by the air conditioned system 1 is supplied to the environmental test room 2. An installation unit 102 for installing an optical measurement object (test object) for optical measurement and an optical measurement device such as a laser interferometer is installed near the center of the environmental test room 2. The details of the environmental test room 2 will be described in the chapter "Structure of the environmental test room".

The dry air heating unit 5 of the air conditioning system 1 is usually installed so as to be distributed over the entire specific side surface of the environmental test room 2, and the air sent from the dry air heating unit 5 passes through the environmental test room 2. , Flows from the side surface on which the dry air heating unit 5 is installed toward the side surface facing the dry air heating unit 5, most of which is discharged to the dehumidifying unit 3 side, circulates in the air conditioning system 1, and a part of the air is discharged to the outside air. The exhaust duct to the outside air is provided with a valve 23 (air amount adjusting valve) for adjusting the amount of exhaust gas.

The dehumidifying unit 3 includes a desiccant air conditioner 30 as a main component, and the air and the outside air discharged from the environmental test room 2 are cooled by coolers 31 and 34 to temperatures suitable for dehumidification, and then mixed. It is supplied to the desiccant air conditioner 30. Temperature sensors 32 and 35 are provided at the outlets of the coolers 31 and 34, respectively, and the control devices (denoted as PID in the figure) 33 and 36 are dehumidified by the temperature obtained by the temperature sensors 32 and 35. The coolers 31 and 34 are controlled so as to have a suitable temperature.

Cooling the air supplied to the desiccant air conditioner 30, that is, the air to be dehumidified by the coolers 31 and 34, means not only making the air to be dehumidified at a temperature suitable for dehumidification but also pre-dehumidifying. doing. In particular, since the outside air has a high humidity, the burden of dehumidification by the desiccant air conditioner 30 can be reduced by pre-dehumidifying with the cooler 34.

In FIG. 1, the air and the outside air discharged from the environmental test chamber 2 are mixed after being cooled by the coolers 31 and 34, respectively, but the air and the outside air discharged from the environmental test chamber 2 are mixed first. Then, it may be cooled by one cooler.

The air supplied to the desiccant air conditioner 30 (air to be dehumidified) is sent by the blower 302, passes through the desiccant rotor 301 in which the moisture adsorbent is retained, and is dehumidified. Here, as the water adsorbent retained in the desiccant rotor 301, a high-temperature regenerative water-adsorbing substance such as a polymer adsorbent, silica gel, or zeolite is used, which adsorbs water at low temperature and releases water at high temperature. Be done.

The desiccant rotor 301 has a cylindrical shape and rotates around the axis of the cylinder in the direction of the arrow shown in FIG. 1, for example. Here, most of the air to be dehumidified passes through the portion of the region A of the rotating desiccant rotor 301, is dehumidified, becomes dry air, and is sent to the dry air temperature control unit 4 side. Further, a part of the air to be dehumidified passes through the portion of the region C of the desiccant rotor 301, is heated by the heater 304, returns to the desiccant rotor 301 again, and passes through the portion of the region B. At this time, the moisture-adsorbing substance held in the region B of the desiccant rotor 301 is exposed to the heated air, so that the moisture-adsorbing ability is restored. On the other hand, since the air that has passed through the region B contains a large amount of water, it is exhausted to the outside of the dehumidifying unit 3 (air conditioning system 1) via the blower 303.

The desiccant rotor 301 rotates in the direction of region A → region B → region C → region A → ... Here, the air to be dehumidified cooled by the coolers 31 and 34 passes through the portion of the region A, and the air heated by the heater 304 passes through the portion of the region B. Therefore, as the desiccant rotor 301 rotates, the water-adsorbing substance held therein adsorbs water in the region A, but releases the water adsorbed in the region B to increase the water adsorption capacity. Recover.

Further, a part of the cooled air to be dehumidified passes through the portion of the region C. At this time, the moisture-adsorbing substance heated in the region B is cooled, and the air passing through the region C is heated. Therefore, the energy required for heating in the heater 304 can be saved.

The temperature of the air that has passed through the region A of the desiccant rotor 301 rises. Therefore, the air that has passed through the portion of the region A is cooled by the cooler 37 to a temperature substantially equal to that of the air discharged from the environmental test chamber 2. At this time, a temperature sensor 38 is provided at the outlet of the cooler 37, and the air that has passed through the cooler 37 is controlled by the control device 39 so as to maintain a constant temperature.

By the way, in the present embodiment, not all of the air discharged from the environmental test chamber 2 is supplied to the dehumidifying section 3, but a part of the air passes through the bypass duct 15, that is, bypasses the dehumidifying section 3. It is made to flow to the dry air temperature control unit 4. By doing so, among the air discharged from the environmental test chamber 2, only the amount of air necessary for removing the humidity increase generated in the environmental test chamber 2 can be flowed to the dehumidifying section 3. At least after the operation of the air conditioning system 1 is started and a certain period of time has passed, the increase in humidity generated in the environmental test room 2 becomes slight. Therefore, by flowing a part of the air discharged from the environmental test room 2 to the bypass duct 15 side, the dehumidifying load of the desiccant rotor 301 can be reduced, and further, the desiccant rotor 301 can be downsized. ..

The amount of air supplied to the dehumidifying unit 3 and the amount of air bypassing the dehumidifying unit 3 can be adjusted by controlling the opening degrees of the valves 11 and 13, respectively. Further, as a matter of course, all the air discharged from the environmental test chamber 2 may be supplied to the dehumidifying unit 3 without providing the bypass duct 15.

The humidity of the air discharged from the desiccant air conditioner 30 is appropriately adjusted by adjusting the temperature of the region B of the desiccant rotor 301, that is, the heating intensity of the heater 304, the rotation speed of the desiccant rotor 301, the air volume of the blower 302, and the like. Can be set.

Further, in the present embodiment, the dehumidifying unit 3 is dehumidified by the desiccant air conditioner 30, but the dehumidifying means is not limited to the desiccant air conditioner 30, and is dehumidified by a method of repeating cooling and overheating. There may be.

Next, the dry air temperature control unit 4 includes a cooler 42 using cold water as a refrigerant, a chiller 43, a heater 48 for heating the cooled cold water, and the like. The dry air sent from the dehumidifying section 3 is adjusted to a temperature lower than the set air temperature inside the environmental test chamber 2 by the cooler 42, and then sent to the dry air heating section 5.

Here, the cooler 42 is provided in the cooling duct 40, and is composed of a coil-shaped pipe through which cold water as a refrigerant (hereinafter referred to as refrigerant water) flows. The refrigerant water flowing through the coiled pipe is heated by the heater 48 to adjust the temperature to a predetermined target temperature of the refrigerant water. Then, the dry air sent from the dehumidifying unit 3 via the blower 41 is cooled by coming into contact with the chilled water coil, and is cooled from the target temperature of the predetermined dry air (from the set air temperature inside the environmental test chamber 2). The temperature is adjusted to a slightly lower temperature).

Here, a tank 47 is provided in addition to the heater 48 in the middle of the pipe through which the refrigerant water flows. The tank 47 plays a role of stabilizing the temperature of the refrigerant water by temporarily storing the refrigerant water.

Therefore, the heater 48 is supplied with refrigerant water having a small temperature fluctuation. Then, the refrigerant water having a small temperature fluctuation is heated by the heater 48 controlled by the control devices 61 and 62, and is sent to the cooler 42. At this time, the control device 61 compares the air temperature obtained from the temperature sensor 63 provided at the outlet of the cooling duct 40 with the preset target air temperature, and based on the difference amount, the refrigerant at the outlet of the heater 48. Calculate the target temperature of water. Further, the control device 62 compares the temperature of the refrigerant water obtained from the temperature sensor 49 provided at the outlet of the heater 48 with the target temperature of the refrigerant water calculated by the control device 61, and the heater is based on the difference amount. The heat generation intensity of 48 is controlled.

The dry air heating unit 5 includes heaters 51, 54, a heat storage body 55, temperature sensors 52, 56, control devices 53, 57, CL, and the like. The dry air supplied from the dry air temperature control unit 4 is heated to a predetermined temperature by passing through the heater 51, and further passes through the heater 54 and the heat storage body 55 provided on the side surface of the environmental test chamber 2. Then, it is heated to the set air temperature in the preset environmental test room 2.

Here, the heating intensity of the heater 51 is controlled by the control device 53 so that the temperature obtained by the temperature sensor 52 provided at the outlet thereof is constant. Similarly, as for the heating intensity of the heater 54, the temperature obtained by the temperature sensor 52 provided on the ceiling of the environmental test room 2 which is the outlet from the heat storage body 55 becomes the same as the set air temperature in the environmental test room 2. It is controlled by the control device 57. The control device CL is a control unit that controls the surface temperature of the surface plate 104 (see FIG. 2) and the wind speed of the conditioned air, which will be described later. The control device CL controls so that the surface temperature of the surface plate 104, which will be described later, is the same as that of the conditioned air. The control device CL may be installed in a place other than the dry air heating unit 5.

A plurality of sets of a heater 54 and a heat storage body 55 are provided in the supply port 2in of the environmental test room 2. Therefore, since the dry air maintained at a constant temperature is supplied substantially uniformly into the environmental test chamber 2, the air temperature in the environmental test chamber 2 is also made uniform.

The heat storage body 55 provided on the downstream side of the heater 54 is composed of a perforated passage member having a large number of holes serving as air passages. The heat storage body 55 absorbs heat when the temperature of the air passing through the hole is higher than its own temperature, and releases heat when the temperature is lower. Therefore, the heat storage body 55 is preferably one in which the temperature does not fluctuate easily, and is usually constructed by using a material having a large heat capacity and a material having a good thermal conductivity (for example, a metal such as copper or aluminum). Therefore, the temperature fluctuation of the dry air that passes through the hole of the heat storage body 55 and is sent into the environmental test chamber 2 can be effectively suppressed.

<Structure of environmental test room>
Hereinafter, the configuration of the environmental test laboratory 2 according to the present embodiment will be described with reference to FIGS. 2 to 5.

FIG. 2 is a perspective view showing a schematic configuration of the environmental test chamber 2 according to the present embodiment, and shows the configuration of the environmental test chamber 2 as viewed from an obliquely upward and rearward direction. FIG. 3 is a top view showing a schematic configuration of the environmental test chamber 2, and shows the configuration of the environmental test chamber 2 as viewed from above. FIG. 4 is a side sectional view showing a schematic configuration of the environmental test chamber 2, and a cross section obtained by cutting the environmental test chamber 2 shown in FIG. 3 along the line X1-X1 is seen from the side surface direction (arrow direction). Shows the layout you saw. FIG. 5 is a rear view showing a schematic configuration of the environmental test chamber 2, and shows the configuration of the environmental test chamber 2 as viewed from the rear direction.

As shown in FIG. 2, the environmental test room 2 according to the present embodiment has a hexahedral shape, and has a supply port 2in, a discharge port 2out, a flow path portion 101, an installation portion 102, and a curtain. It includes 103, a surface plate 104, a vibration isolating member 105, and a rectifying plate 106.

The supply port 2in is an opening to which conditioned air is supplied. The supply port 2in is provided on the entire surface of an arbitrary surface in the environmental test room 2 which has a hexahedral shape. Air-conditioned air at a substantially uniform predetermined wind speed and a substantially uniform predetermined temperature is supplied to the supply port 2in. A filter for removing foreign matter from the conditioned air flowing into the inside of the flow path portion 101 from the outside through the supply port 2in is installed in the supply port 2in. The discharge port 2out is an opening through which conditioned air is discharged. The discharge port 2out is arranged on the entire surface of the environmental test room 2 facing the supply port 2in. A filter is installed in the discharge port 2out to prevent the conditioned air from flowing back into the inside of the flow path portion 101 through the discharge port 2out. The flow path portion 101 is a portion through which the conditioned air inside the environmental test chamber 2 passes. The flow path portion 101 is arranged between the supply port 2in and the discharge port 2out. The installation unit 102 is a place where an optical measurement object (test object) or an optical measurement device such as a laser interferometer, which is not shown for optical measurement, is installed. The installation portion 102 is arranged near the center of the flow path portion 101.

The curtain 103 partitions the space in which the installation portion 102 is provided (hereinafter referred to as “measurement target space”) and the space outside the space, and rectifies the air flow of the conditioned air flowing in the flow path portion 101. It is a rectifying member. Here, it is assumed that the rectifying member is composed of the curtain 103. However, the rectifying member may be made of a plate-shaped article instead of the curtain 103. In the present embodiment, two curtains 103 are arranged, one on each side of the installation portion 102. The curtain 103 is arranged between the side wall surface 101s of the flow path portion 101 and the installation portion 102 in the lateral direction so as to extend in the depth direction.

The curtain 103 is movably suspended from the ceiling surface 101t (see FIG. 5) by a curtain rail (not shown), and is configured to be deployable and retractable in the direction of arrow A103. The curtain 103 preferably has a structure that can be fixed to an arbitrary position on the ceiling surface 101t (see FIG. 5) or the floor surface 101b (see FIG. 5) of the flow path portion 101 with a member (not shown) such as a string. It is good to have. Since the curtain 103 can be deployed and stored in the direction of arrow A103 in the environmental test room 2, the object to be measured (not shown) or the optical measuring device (not shown) to the installation unit 102 Installation work can be done easily.

The curtain 103 is preferably made of a radiant heat insulating material having a specular reflection surface F11 and a diffuse reflection surface F12 as a material. The specular reflection surface F11 is a surface having a specular reflection function (that is, a function of reflecting light with high efficiency like a mirror). The diffuse reflection surface F12 is a surface having a diffuse reflection function (that is, a function of reflecting light while diffusing).

The curtain 103 may be installed on the specular reflection surface F11 with the outer surface of the flow path portion 101 (environmental test chamber 2) facing the side wall surface 101s (see FIG. 3). As a result, the environmental test room 2 according to the present embodiment can suppress the propagation of radiant heat from the side wall surface 101s to the measurement object or the optical measuring device installed in the installation portion 102. In such an environmental test room 2, the temperature inside the curtain 103 can be made substantially the same. Therefore, the environmental test room 2 can easily converge the temperature distribution of the measurement object or the optical measuring device installed in the installation unit 102 to a small value. As a result, the environmental test room 2 keeps the temperature distribution of the measurement object and the optical measuring device installed in the installation unit 102 within a desired temperature range (for example, within ± 0.5 ° C., particularly preferably ± 0.1 ° C.). It can be easily stored within).

Further, the curtain 103 is installed so that the inner surface which is the surface facing the installation portion 102 (the surface not facing the side wall surface 101s of the flow path portion 101 (environmental test room 2)) becomes the diffuse reflection surface F12. It should be done (see FIG. 3). As a result, the environmental test room 2 according to the present embodiment prevents the laser beam from being diffusely reflected by the curtain 103 and hindering the measurement when, for example, the installation unit 102 uses an optical measuring device that emits the laser beam. can do.

In the present embodiment, a slight gap is provided between the upper end portion of the curtain 103 and the ceiling surface 101t (see FIG. 5) of the flow path portion 101. Further, a slight gap is provided between the lower end portion of the curtain 103 and the floor surface 101b (see FIG. 5) of the flow path portion 101. This reduces the contact area of the curtain 103 with respect to the ceiling surface 101t and the floor surface 101b of the flow path portion 101 (environmental test room 2), and reduces the amount of heat conduction transmitted from the ceiling surface 101t and the floor surface 101b to the curtain 103 as much as possible. This is to suppress fluctuations in the temperature of the curtain 103.

The side wall surface 101s of the flow path portion 101 and the curtain 103 are arranged so as to be parallel to the air flow direction of the conditioned air flowing from the supply port 2in to the discharge port 2out. In the environmental test room 2 according to the present embodiment, the entire surface of an arbitrary wall is provided with a supply port 2in for uniformly blowing out conditioned air, and the conditioned air is rectified by the side wall surface 101s of the flow path portion 101 and the curtain 103. As a result, the conditioned air supplied from the supply port 2in into the environmental test chamber 2 is rectified by the curtain 103 and travels almost straight toward the discharge port 2out, and the circulation flow path 6 is rectified from the discharge port 2out (see FIG. 1). ) (See arrow Air). The environmental test room 2 according to the present embodiment is air-conditioned so that the temperature of the measurement object or the optical measurement device does not fluctuate due to unintended heat transfer to the measurement object or the optical measurement device. The air flow can be controlled.

The surface plate 104 is a trapezoidal member capable of heating and cooling the surface. The surface plate 104 is arranged on the floor via the vibration isolating member 105. The space above the surface plate 104 is used as the installation unit 102. The surface plate 104 is preferably configured so that the floor surface 101b cannot be seen from the installation portion 102 as much as possible for radiant heat insulation. Therefore, it is preferable that the surface plate 104 has a width substantially equal to the width of the installation portion 102. In other words, the installation portion 102 may be designed to have a width substantially equal to the width of the surface plate 104. The surface plate 104 has a configuration in which the surface temperature can be changed between 0 and 50 ° C., for example. As described above, the control device CL controls so that the surface temperature of the surface plate 104 is the same as that of the conditioned air. As a result, the control device CL can prevent the measurement object and the optical measurement device installed in the installation unit 102 from becoming a temperature different from the air temperature due to radiant heat. Further, the control device CL can keep the temperature distribution in the measurement target space within a desired temperature range, for example.

The vibration isolating member 105 is a trapezoidal member that removes vibration. Hereinafter, the vibration isolator 105 may be referred to as a “vibration isolation table”. The vibration isolating member 105 is arranged below the surface plate 104, and removes vibration transmitted from the floor side so that the surface plate 104 does not shake.

The rectifying plate 106 is a rectifying member that rectifies the air flow of the conditioned air flowing in the flow path portion 101. The straightening vane 106 is composed of a plate-shaped member, and is arranged between the surface plate 104 and the discharge port 2out. The upper surface of the straightening vane 106 is arranged at the same height as the upper surface of the surface plate 104.

Further, as shown in FIGS. 3 and 4, the environmental test room 2 according to the present embodiment includes a straightening vane 107. Like the rectifying plate 106, the rectifying plate 107 is a rectifying member that rectifies the air flow of the conditioned air flowing in the flow path portion 101. The straightening vane 107 is composed of a plate-shaped member, and is arranged between the surface plate 104 and the supply port 2in. The upper surface of the straightening vane 107 is arranged at the same height as the upper surface of the surface plate 104.

Further, as shown in FIGS. 4 and 5, the environmental test room 2 according to the present embodiment includes a straightening vane 108. Like the rectifying plates 106 and 107, the rectifying plate 108 is a rectifying member that rectifies the air flow of the conditioned air flowing in the flow path portion 101. The straightening vane 108 is composed of a plate-shaped member, and is arranged between the ceiling surface 101t of the flow path portion 101 and the installation portion 102.

Hereinafter, when the rectifying plates 106, 107, and 108 are distinguished, the rectifying plate 106 is referred to as a "first surface plate rectifying member", the rectifying plate 107 is referred to as a "second surface plate rectifying member", and the rectifying plate 108 is used. May be referred to as "ceiling surface rectifying member".

The rectifying plate 106 (the rectifying member for the first surface plate) is preferably rotatably attached to the opening surface of the discharge port 2out with a hinge (see FIG. 4). In such an environmental test room 2, a working space is formed around the installation portion 102 by rotating (lifting) the straightening vane 106 in the direction of the arrow A106 when installing the measurement object or the optical measuring device. Can be done. Therefore, the environmental test room 2 can easily perform the work of installing the measurement object and the optical measuring device on the installation unit 102. Further, in the environmental test room 2, the upper surface of the rectifying plate 106 is arranged at the same height as the upper surface of the surface plate 104 by rotating (tilting) the rectifying plate 106 in the opposite direction of the arrow A106 when measuring the optical equipment. can do. As a result, the environmental test room 2 can rectify the airflow of the conditioned air near the discharge port 2out and reduce the turbulence of the airflow. As a result, the environmental test room 2 can easily obtain a space suitable for measurement of the optical device. The straightening plate 106 (the straightening member for the first surface plate) may be configured to be freely removable and attached to the opening surface of the discharge port 2out.

Further, the straightening vane 106 (the straightening vane for the first surface plate) is preferably arranged so as not to come into contact with the surface plate 104 (see FIG. 4). Since such an environmental test room 2 can suppress the vibration of the straightening vane 106 from being transmitted to the surface plate 104, it is possible to perform high-precision measurement of the optical equipment. In the surface plate 104, vibration is removed by the vibration isolating member 105.

Further, the straightening vane 106 (the straightening vane for the first surface plate) is preferably made of a heat insulating material. Particularly preferably, the straightening vane 106 (the straightening member for the first surface plate) is made of a radiating heat insulating material having a specular reflection surface F11 on the lower surface and a diffuse reflection surface F12 on the upper surface (FIG. 4). reference). In such an environmental test room 2, since the lower surface of the straightening vane 106 is a specular reflection surface F11, the propagation of radiant heat from the floor surface 101b (see FIG. 4) to the measurement object placed on the installation unit 102 is suppressed. can do. Therefore, the environmental test room 2 can easily converge the temperature distribution of the measurement object or the optical measuring device installed in the installation unit 102 to a small value. Further, in the environmental test room 2, for example, when the installation unit 102 uses an optical measuring device that emits laser light, the upper surface of the rectifying plate 106 is a diffuse reflection surface F12, so that the laser light is diffusely reflected by the rectifying plate 106. It is possible to prevent the measurement from being hindered.

Further, the straightening vane 107 (rectifying member for the second surface plate) is preferably rotatably attached to the opening surface of the supply port 2in by a hinge (see FIG. 4). In such an environmental test room 2, a working space can be formed around the installation portion 102 by rotating the straightening vane 107 in the direction of the arrow A107 when installing the measurement object or the optical measuring device. Therefore, the environmental test room 2 can easily perform the work of installing the measurement object and the optical measuring device on the installation unit 102. Further, in the environmental test room 2, the upper surface of the rectifying plate 107 is arranged at the same height as the upper surface of the surface plate 104 by rotating (tilting) the rectifying plate 107 in the direction opposite to the arrow A107 when measuring the optical equipment. can do. As a result, the environmental test room 2 can rectify the airflow of the conditioned air near the supply port 2in and reduce the turbulence of the airflow. As a result, the environmental test room 2 can easily obtain a space suitable for measurement of the optical device. The rectifying plate 107 (rectifying member for the second surface plate) may be configured to be freely removable and attached to the opening surface of the supply port 2in.

Further, the straightening vane 107 (the straightening vane for the second surface plate) is preferably arranged so as not to come into contact with the surface plate 104 (see FIG. 4). In such an environmental test room 2, the vibration of the straightening vane 107 can be prevented from being transmitted to the surface plate 104, so that high-precision measurement of the optical device can be performed.

Further, the straightening vane 107 (rectifying member for the second surface plate) is preferably made of a heat insulating material. Particularly preferably, the straightening vane 107 (rectifying member for the second surface plate) is made of a radiating heat insulating material having a specular reflection surface F11 on the lower surface and a diffuse reflection surface F12 on the upper surface (FIG. 4). reference). Such an environmental test room 2 can suppress the propagation of radiant heat from the floor surface 101b (see FIG. 4) to the measurement object placed on the installation unit 102. Therefore, the environmental test room 2 can easily converge the temperature distribution of the measurement object or the optical measuring device installed in the installation unit 102 to a small value.

Further, the straightening vane 108 (ceiling surface straightening member) is preferably made of a heat insulating material. Particularly preferably, the straightening vane 108 (ceiling surface straightening member) is made of a radiating heat insulating material having a specular reflection surface F11 on the upper surface and a diffuse reflection surface F12 on the lower surface (see FIG. 4). .. Such an environmental test room 2 can suppress the propagation of radiant heat from the ceiling surface 101t (see FIG. 4) to the measurement object placed on the installation unit 102. Therefore, the environmental test room 2 can easily converge the temperature distribution of the measurement object or the optical measuring device installed in the installation unit 102 to a small value.

In such a configuration, when measuring an optical device, the operator first carries the measurement object or the optical measuring device into the installation unit 102. Next, the operator installs the object to be measured and the optical measuring device in the installation unit 102 to operate the air conditioning system 1. At this time, the control device CL controls the surface plate 104 so that the surface temperature of the surface plate 104 is the same as that of the conditioned air.

<Relationship between heat conduction, heat transfer and radiant heat in an environmental test room>
Hereinafter, the relationship between the amount of heat conduction, the amount of heat transfer, and the amount of radiant heat in the environmental test room 2 will be described with reference to FIG. FIG. 6 is an explanatory diagram showing the relationship between the amount of heat conduction, the amount of heat transfer, and the amount of radiant heat in the environmental test room 2.

FIG. 6 shows a state in which the anti-vibration pedestal st is arranged on the floor surface 101b instead of the surface plate 104, and the object m as a measurement object is installed on the anti-vibration pedestal st. FIG. 6 shows that when the temperature Tm of the object m is lower than the ambient temperature, the heat conduction amount Qcond, the heat transfer amount Qht, and the radiant heat amount Qr are transmitted from the surroundings to the object m side. However, when the temperature Tm of the object m is higher than the ambient temperature, these amounts of heat are conversely transmitted from the object m side to the surroundings. The heat conduction amount Qcond is the amount of heat transmitted from the ground to the object m side by heat conduction through the anti-vibration gantry st in contact with the object m (or the object via the anti-vibration gantry st in contact with the object m). The amount of heat transferred from m to the ground) is shown. The heat transfer amount Qht represents the amount of heat transferred from the air conditioning air to the object m by heat transfer (or the amount of heat transferred from the object m to the air conditioning air by heat transfer). The amount of radiant heat Qr is the circumference of the object m (for example, the rectifying plate 108 arranged near the ceiling (see FIG. 5), the curtain 103 arranged on the side surface side of the object m (see FIG. 5), the floor surface 101b, etc. It represents the amount of heat radiated from the wall surface) (or the amount of heat radiated from the object m to the surroundings).

Regarding the influence of the heat conduction amount Qcond on the temperature Tm of the object m, the table on which the object m is installed is exposed to the conditioned air flowing through the flow path portion 101 to release the heat amount to the conditioned air (or to release the heat amount to the conditioned air). It can be eliminated by changing the base from the anti-vibration stand st to the platen 104 and operating the platen 104 to control the temperature of the platen 104.

In the environmental test room 2 according to the present embodiment, as described below, the amount of radiant heat radiated from the rectifying plate 108 and the amount of radiant heat radiated from the curtain 103 become almost zero. Therefore, as the amount of radiant heat to be considered, only the amount of radiant heat radiated from the floor surface 101b remains. For example, the amount of radiated heat Qr fluctuates according to the temperature difference between the radiated wall surface and its surroundings, and becomes zero when the temperature difference between the wall surface and its surroundings is zero. Then, the environmental test room 2 exposes the rectifying plate 108 arranged near the ceiling to the conditioned air flowing through the flow path portion 101 and releases the heat amount to the conditioned air (or takes in the heat amount from the conditioned air) to rectify the heat. The temperature difference between the plate 108 and the conditioned air can be made almost zero. As a result, the environmental test room 2 can reduce the amount of radiant heat radiated from the straightening vane 108 to almost zero. Further, the environmental test room 2 exposes the curtain 103 arranged on the side surface side of the object m to the conditioned air flowing through the flow path portion 101 to release the amount of heat to the conditioned air (or to take in the amount of heat from the conditioned air). , The temperature difference between the curtain 103 and the conditioned air can be made almost zero. As a result, the environmental test room 2 can reduce the amount of radiant heat radiated from the curtain 103 to almost zero. Therefore, in the environmental test room 2 according to the present embodiment, only the amount of radiant heat radiated from the floor surface 101b remains as the amount of radiant heat to be considered (that is, the amount of radiant heat Qr).

According to the known Stefan-Boltzmann law, it is known that the energy emitted from the blackbody by thermal radiation (that is, the amount of radiated heat Qr) is proportional to the fourth power of the thermodynamic temperature. The value of such a radiant heat amount Qr is relatively large and easily changes. Therefore, in order to carry out a suitable test, it is important to control the radiant heat amount Qr appropriately.

Here, the relationship between the heat transfer amount Qht and the radiant heat amount Qr will be described with reference to FIGS. 7A and 7B. For example, as shown in FIG. 7A, it is assumed that the relationship between the temperature Ta of the conditioned air, the temperature Tm of the object m, and the temperature Twall of the wall surface is "Ta <Tm <Twall". In this case, the object m releases the heat transfer amount Qht to the conditioned air and takes in the radiant heat amount Qr from the surrounding wall surface. On the contrary, as shown in FIG. 7B, it is assumed that the relationship between the temperature Ta of the conditioned air, the temperature Tm of the object m, and the temperature Twall of the wall surface is "Twall <Tm <Ta". In this case, the object m takes in the heat transfer amount Qht from the surrounding wall surface and releases the radiant heat amount Qr to the conditioned air. As described above, the relationship between the heat transfer amount Qht and the radiant heat amount Qr varies depending on each value of the temperature Ta of the conditioned air, the temperature Tm of the object m, and the temperature Twall of the wall surface.

The wall surface temperature Twall is an average temperature of the temperature Twall (t) of the ceiling surface 101t, the temperature Twall (s) of the side wall surface 101s, and the temperature Twall (b) of the floor surface 101b. However, in the present embodiment, as described below, with respect to the wall surface temperature Twall, the temperature Twall (t) of the ceiling surface 101t and the temperature Twall (s) of the side wall surface 101s can be excluded from the components. The value of the temperature Twall of the wall surface is the same as the value of the temperature Twall (b) of the floor surface 101b. For example, in the environmental test room 2 according to the present embodiment, a straightening vane 108 (see FIG. 5) is arranged between the ceiling surface 101t and the object m, and the straightening vane 108 is used as conditioned air flowing through the flow path 101. By exposing, the temperature difference between the straightening vane 108 and the conditioned air can be made almost zero. Therefore, in the present embodiment, with respect to the wall surface temperature Twall, the temperature Twall (t) of the ceiling surface 101t can be excluded from the components. Further, in the environmental test room 2 according to the present embodiment, the curtain 103 (see FIG. 5) is arranged between the side wall surface 101s and the object m, and the curtain 103 is exposed to the conditioned air flowing through the flow path portion 101. Therefore, the temperature difference between the curtain 103 and the conditioned air can be made almost zero. Therefore, in the present embodiment, with respect to the wall surface temperature Twall, the temperature Twall (s) of the side wall surface 101s can be excluded from the components. Therefore, in the present embodiment, the value of the wall surface temperature Twall is the same as the value of the floor surface 101b temperature Twall (b). Such an environmental test room 2 can eliminate the influence of the temperature Twall (t) of the ceiling surface 101t and the influence of the temperature Twall (s) of the side wall surface 101s on the temperature Tm of the object m.

By the way, the local heat transfer coefficient h of the object m changes according to the size of the object m. The relationship between the temperature difference Tm-Ta between the object m and the air and the temperature difference Twall-Ta between the wall surface and the conditioned air changes according to the local heat transfer coefficient h of the object m. FIG. 8 is a schematic diagram for explaining the size of the object m. FIG. 9 is a graph showing the relationship between the temperature difference Tm-Ta between the object m and the air and the temperature difference Twall-Ta between the wall surface and the conditioned air.

In the example shown in FIG. 8, the object m is virtually configured as a flat plate, and its size is L. In FIG. 9, the horizontal axis is the distance L [m] from the tip of the flat plate (that is, the size of the object m), the vertical axis on the right side is the local heat transfer coefficient h [W / m ² ° C.] of the flat plate, and the left side. The vertical axis is the temperature difference between the object m and the air Tm-Ta [° C.].

In FIG. 9, the local heat transfer coefficient h of the flat plate corresponding to the distance L [m] (that is, the size of the object m) from the tip of the flat plate is shown by a dotted line. The value of the local heat transfer coefficient h of the flat plate at each distance L corresponds to the value on the vertical axis on the right side. As is clear from FIG. 9, the local heat transfer coefficient h of the flat plate (object m) decreases as the distance L increases.

When the local heat transfer coefficient h of the flat plate (object m) becomes small, the efficiency of heat transfer performed between the conditioned air and the object m decreases. As a result, the influence of the heat transfer amount Qht on the temperature Tm of the object m is reduced. Therefore, the balance between the heat transfer amount Qht and the radiant heat amount Qr changes, and the temperature Tm of the object m changes. For example, suppose that when the local heat transfer coefficient h is small, the heat transfer amount Qht having the same value as when the local heat transfer coefficient h is large is transferred between the conditioned air and the object m. In this case, the temperature difference Tm-Ta between the object m and the air increases more than when the local heat transfer coefficient h is large. On the other hand, the amount of radiant heat Qr also increases as the dissociation between the object temperature Tm and the wall surface temperature Tw increases according to Stefan-Boltzmann's law. If heat transfer due to heat conduction is ignored, the temperature Tm of the object is stable at the point where the heat transfer amount Qht and the radiated heat amount Qr are equal. Therefore, if the local heat transfer rate h is small, the temperature Tm of the object m is local. The temperature changes to a temperature closer to the wall temperature Twall than when the heat transfer rate h is large. Therefore, the balance between the heat transfer amount Qht and the radiant heat amount Qr changes as the local heat transfer coefficient h changes. Moreover, since the local heat transfer coefficient h changes according to the size of the flat plate (object m), the balance of the relationship between the heat transfer amount Qht and the radiant heat amount Qr changes according to the size of the flat plate (object m).

Further, FIG. 9 shows an object m corresponding to the distance L [m] (that is, the size of the object m) from the tip of the flat plate when the temperature difference Twall-Ta between the wall surface and the conditioned air is changed in five steps. The measurement results of the air temperature difference Tm-Ta are shown by lines L1, L2, L3, L4, and L5. The measurement results shown in FIG. 9 show that the wind speed u is 0.4 [m / s], the temperature Ta of the air conditioning air is 23.5 [° C.], the emissivity δm of the object m is 0.1, and the view factor. It was measured in an environment where F was 0.4. The lines L1, L2, L3, L4, and L5 are measured when the temperature difference Twall-Ta between the wall surface and the conditioned air is 2 ° C, 1 ° C, 0.5 ° C, 0.2 ° C, and 0.1 ° C, respectively. It was done. The value of the temperature difference Tm-Ta between the object m and the air at each distance L corresponds to the value on the left vertical axis. As is clear from FIG. 9, the temperature difference Tm-Ta between the object m and the air increases as the distance L increases. Further, the amount of increase in the temperature difference Tm-Ta between the object m and the air with the increase in the distance L becomes smaller as the temperature difference Twall-Ta between the wall surface and the conditioned air becomes smaller. Since the air temperature Ta is almost constant regardless of the distance L, the distribution of the temperature Tm of the object becomes smaller as the temperature difference Twall-Ta between the wall surface and the conditioned air becomes smaller.

In such a relationship, in the environmental test room 2 according to the present embodiment, as shown in FIG. 10, the surface plate 104 is arranged on the floor surface 101b, and the surface plate 104 is operated to operate the surface plate 104 to obtain the temperature of the surface plate 104. To the temperature of the conditioned air. As a result, the environmental test room 2 sets the relationship between the temperature Ta of the conditioned air, the temperature Tm of the object m, and the temperature Twall of the wall surface as "Ta≈Tm≈Twall". FIG. 10 is an explanatory diagram showing the temperature relationship of the environmental test room 2. For example, in the example shown in FIG. 10, the temperature Ta of the conditioned air taken in from the supply port 2in is 25 ° C, the temperature of the air discharged from the discharge port 2out is 23 ° C, and the temperature of the ceiling surface 101t is 30 ° C. The temperature of the floor surface 101b is 20 ° C. The temperature on the ceiling side becomes 25 ° C., which is the same as the conditioned air, when the rectifying plate 108 arranged near the ceiling is exposed to the conditioned air flowing through the flow path portion 101. Further, although not shown, the temperature of the side surface side of the object m becomes 25 ° C., which is the same as that of the conditioned air, when the curtain 103 arranged on the side surface side is exposed to the conditioned air flowing through the flow path portion 101. Then, the temperature on the floor surface side becomes 25 ° C., which is the same as the conditioned air, when the surface plate 104 is operated. In this way, the environmental test room 2 sets the relationship between the temperature Ta of the air conditioning air, the temperature Tm of the object m, and the temperature Twall of the wall surface to "Ta ≒ Tm ≒ Twall", and is local to the shape and size of the object. Even if the heat transfer coefficient h changes, the amount of change in the temperature Tm of the object m can be reduced. In such an environmental test room 2, the temperature distribution of the object can be reduced.

<Main features of the environmental test laboratory according to this embodiment>
Hereinafter, the main features of the environmental test room 2 according to the present embodiment will be described.
(1) The environmental test room 2 according to the present embodiment includes a supply port 2in, a discharge port 2out, a flow path portion 101, an installation portion 102, a curtain 103 (rectifying member), and a surface plate 104. ing. The side wall surface 101s of the flow path portion 101 and the curtain 103 are arranged so as to be parallel to the air flow direction of the conditioned air flowing from the supply port 2in to the discharge port 2out. The surface plate 104 is arranged on the floor.

Such an environmental test room 2 according to the present embodiment reduces the influence of radiant heat radiated from the floor surface or the like by operating the surface plate 104 (that is, controlling the temperature of the surface plate 104). Can be done.

(2) The environmental test room 2 according to the present embodiment includes a control device CL (control unit) that controls the surface temperature of the surface plate 104 and the wind speed of the conditioned air. The control device CL controls so that the surface temperature of the surface plate 104 is the same as that of the conditioned air.

By operating the surface plate 104 (that is, controlling the temperature of the surface plate 104), the environmental test room 2 according to the present embodiment keeps the temperature distribution of the entire space of the installation unit 102 within a desired temperature range. It can be easily stored in. In particular, the environmental test room 2 according to the present embodiment operates the surface plate 104 before or immediately after the start of the measurement of the optical device to keep the temperature distribution of the entire space of the installation unit 102 within a desired temperature range. Can be done.

(3) The environmental test room 2 according to the present embodiment is provided with a vibration isolating member 105 that removes vibration under the surface plate 104.

In the environmental test room 2 according to the present embodiment, since the surface plate 104 does not shake, the measurement object (test object) for optical measurement and the optical measurement device such as a laser interferometer can be kept stationary. As a result, the environmental test room 2 according to the present embodiment can perform high-precision measurement of the optical device.

(4) In the environmental test room 2 according to the present embodiment, the rectifying plate 106 (the rectifying member for the first surface plate) whose upper surface is the same height as the upper surface of the surface plate 104 between the surface plate 104 and the discharge port 2out. It has.

Since the environmental test room 2 according to the present embodiment can rectify the airflow of the conditioned air near the discharge port 2out and reduce the turbulence of the airflow, it is possible to perform high-precision measurement of the optical device. it can.

(5) In the environmental test room 2 according to the present embodiment, the rectifying plate 106 (the rectifying member for the first surface plate) is rotatably attached to the opening surface of the discharge port 2out.

The environmental test room 2 according to the present embodiment can form a working space around the installation portion 102 by lifting the straightening vane 106 when installing the measurement object or the optical measuring device. Therefore, the environmental test room 2 according to the present embodiment can easily install the measurement object and the optical measurement device on the installation unit 102. Further, in the environmental test room 2 according to the present embodiment, a space suitable for the measurement of the optical equipment can be easily obtained by tilting the straightening vane 106 at the time of measuring the optical equipment.

(6) In the environmental test room 2 according to the present embodiment, the rectifying plate 106 (the rectifying member for the first surface plate) is arranged so as not to come into contact with the surface plate 104.

Since the environmental test room 2 according to the present embodiment can prevent the vibration of the straightening vane 106 from being transmitted to the surface plate 104, it is possible to perform high-precision measurement of the optical device.

(7) In the environmental test room 2 according to the present embodiment, the rectifying plate 107 (the rectifying member for the second surface plate) whose upper surface is flush with the upper surface of the surface plate 104 between the surface plate 104 and the supply port 2in. Is equipped with.

Since the environmental test room 2 according to the present embodiment can rectify the airflow of the conditioned air near the supply port 2in and reduce the turbulence of the airflow, it is possible to perform high-precision measurement of the optical device. it can.

(8) In the environmental test room 2 according to the present embodiment, the rectifying plate 107 (rectifying member for the second surface plate) is rotatably attached to the opening surface of the supply port 2in.

The environmental test room 2 according to the present embodiment can form a working space around the installation portion 102 by lifting the straightening vane 107 when installing the measurement object or the optical measuring device. Therefore, the environmental test room 2 according to the present embodiment can easily install the measurement object and the optical measurement device on the installation unit 102. Further, in the environmental test room 2 according to the present embodiment, a space suitable for the measurement of the optical equipment can be easily obtained by tilting the straightening vane 107 at the time of measuring the optical equipment.

(9) In the environmental test room 2 according to the present embodiment, the rectifying plate 107 (the rectifying member for the second surface plate) is arranged so as not to come into contact with the surface plate 104.

Since the environmental test room 2 according to the present embodiment can prevent the vibration of the straightening vane 107 from being transmitted to the surface plate 104, it is possible to perform high-precision measurement of the optical device.

(10) The environmental test room 2 according to the present embodiment
It is arranged between the ceiling surface 101t of the flow path portion 101 and the installation portion 102, and includes one or a plurality of rectifying plates 108 (ceiling surface rectifying members) for rectifying the air flow of the conditioned air.

Since the environmental test room 2 according to the present embodiment can rectify the airflow of the conditioned air near the ceiling and reduce the turbulence of the airflow, it is possible to perform high-precision measurement of the optical device.

As described above, according to the environmental test room 2 according to the first embodiment, the influence of radiant heat radiated from the floor surface or the like can be reduced.

[Embodiment 2]
The environmental test room 2 (see FIG. 3) according to the first embodiment has a configuration in which one curtain 103 (rectifying member) is arranged between the side wall surface 101s of the flow path portion 101 and the installation portion 102. ..
On the other hand, the second embodiment provides an environmental test chamber 2A having a configuration in which two or more curtains 103 (rectifying members) are arranged between the side wall surface 101s of the flow path portion 101 and the installation portion 102. ..

Hereinafter, the configuration of the environmental test room 2A according to the second embodiment will be described with reference to FIGS. 11 and 12. FIG. 11 is a top view showing a schematic configuration of the environmental test room 2A according to the second embodiment. FIG. 12 is a temperature distribution diagram in the vicinity of the side wall surface 101s of the flow path portion 101 in the environmental test room 2A.

As shown in FIG. 11, the environmental test chamber 2A according to the second embodiment has the side wall surface 101s of the flow path portion 101 and the installation portion 102 as compared with the environmental test chamber 2 according to the first embodiment (see FIG. 3). The difference is that two curtains 103a and 103b are arranged between the two curtains. In the example shown in FIG. 11, the curtain 103b is arranged on the side close to the side wall surface 101s of the flow path portion 101, and the curtain 103a is arranged on the side close to the installation portion 102. The number of curtains 103 is not limited to two, and may be three or more.

As shown in FIG. 11, in the environmental test room 2A according to the second embodiment, the temperature distribution in the vicinity of the side wall surface 101s is relatively lower than that of the installation portion 102 due to the temperature of the side wall surface 101s of the flow path portion 101. The region Td2a is formed. Due to the influence of the temperature distribution region Td2a, the temperature changes in the portion inside the curtain 103b. However, since the influence of the temperature distribution region Td2a can be substantially blocked by the curtain 103b, the temperature does not change in the portion inside the curtain 103a. Such an environmental test room 2A according to the second embodiment can provide an environment more suitable for measurement of optical instruments than the environmental test room 2 according to the first embodiment.

As described above, according to the environmental test room 2A according to the second embodiment, the influence of the radiant heat radiated from the floor surface or the like can be reduced as in the environmental test room 2 according to the first embodiment.
Moreover, according to the environmental test room 2A according to the second embodiment, two or more curtains 103 (rectifying members) are arranged between the side wall surface 101s of the flow path portion 101 and the installation portion 102. Therefore, in the environmental test chamber 2A according to the second embodiment, the influence of the temperature distribution region Td2a caused by the temperature of the side wall surface 101s of the flow path portion 101 can be substantially blocked by the curtain 103b. Such an environmental test room 2A according to the second embodiment can provide an environment more suitable for measurement of optical instruments than the environmental test room 2 according to the first embodiment.

[Embodiment 3]
The environmental test room 2 (see FIG. 3) according to the first embodiment has a configuration in which only the flow path portion 101 is provided between the installation portion 102 and the discharge port 2out, and the discharge port 2out directly faces the installation portion 102. .. Therefore, in the environmental test room 2 according to the first embodiment, radiant heat radiated from the filter installed in the discharge port 2out and invading the inside of the flow path portion 101 may reach the installation portion 102.
On the other hand, the third embodiment provides an environmental test room 2B in which a labyrinth mechanism 111 is provided between the installation unit 102 and the discharge port 2out.

Hereinafter, the configuration of the environmental test room 2B according to the third embodiment will be described with reference to FIGS. 13 and 14. FIG. 13 is a top view showing a schematic configuration of the environmental test room 2B according to the third embodiment. FIG. 14 is a side sectional view showing a schematic configuration of the environmental test chamber 2B, and a cross section obtained by cutting the environmental test chamber 2B shown in FIG. 13 along the X2-X2 line is seen from the side surface direction (arrow direction). Shows the layout you saw.

Compared with the environmental test room 2 (see FIG. 3) according to the first embodiment, the environmental test room 2B according to the third embodiment has the rectifying plate 106 (see FIG. 3) deleted, and the installation unit 102. The difference is that a labyrinth mechanism 111 is provided between the outlet 2out and the discharge port 2out.

The labyrinth mechanism 111 is a mechanism that guides the air flow of the conditioned air to the bottleneck 112. The environmental test room 2B according to the third embodiment reaches the installation unit 102 by blocking the radiant heat radiated from the filter installed in the discharge port 2out and entering the inside of the flow path portion 101 by the labyrinth mechanism 111. Can be prevented. Such an environmental test room 2B according to the third embodiment can provide an environment more suitable for measurement of optical instruments than the environmental test room 2 according to the first embodiment.

As described above, according to the environmental test room 2B according to the third embodiment, the influence of the radiant heat radiated from the floor surface or the like can be reduced as in the environmental test room 2 according to the first embodiment.
Moreover, according to the environmental test room 2B according to the third embodiment, the labyrinth mechanism 111 blocks the radiant heat radiated from the filter installed in the discharge port 2out and enters the inside of the flow path portion 101. It is possible to prevent reaching 102. Such an environmental test room 2B according to the third embodiment can provide an environment more suitable for measurement of optical instruments than the environmental test room 2 according to the first embodiment.

[Embodiment 4]
The object to be measured and the optical measuring device are relatively heavy articles. Therefore, it is desirable that the environmental test room 2 uses a crane to perform the installation work when installing the measurement object or the optical measurement device in the installation unit 102. However, the environmental test room 2 (see FIG. 5) according to the first embodiment has a configuration in which the vibration isolating member 105 and the surface plate 104 are arranged on the floor surface 101b. The environmental test room 2 according to the first embodiment has a step between the floor surface 101b and the upper surface of the surface plate 104. Therefore, the environmental test room 2 according to the first embodiment may collide with the surface plate 104 when the object to be measured or the optical measuring device is suspended by the crane and carried into the installation unit 102. Therefore, the environmental test room 2 according to the first embodiment is configured to force the operator to carefully operate the crane when performing the installation work using the crane.
On the other hand, in the fourth embodiment, when the object to be measured or the optical measuring device is suspended by the crane and carried into the installation unit 102, the environmental test room 2C has a configuration in which it is difficult for them to collide with the surface plate 104. I will provide a.

Hereinafter, the configuration of the environmental test room 2C according to the fourth embodiment will be described with reference to FIGS. 15 to 18. FIG. 15 is a rear view showing a schematic configuration of the environmental test room 2C according to the fourth embodiment. FIG. 16 is an explanatory view of the bellows type tent 110 (tent-shaped rectifying member) used in the fourth embodiment. FIG. 17 is a top view showing a schematic configuration of the environmental test room 2C. FIG. 18 is a side sectional view showing a schematic configuration of the environmental test room 2C.

As shown in FIGS. 15, 17, and 18, the environmental test room 2C according to the fourth embodiment differs from the environmental test room 2 (see FIG. 5) according to the first embodiment in the following points. ing.
(1) In the environmental test room 2C according to the fourth embodiment, an accommodating groove 113 dug in the ground is formed on the floor, and the vibration isolating member 105 and the surface plate 104 are accommodated in the accommodating groove 113. There is.
(2) The environmental test room 2C according to the fourth embodiment has a bellows type tent 110 (see FIG. 16) surrounding the installation portion 102, and a crane 114 (see FIG. 15) on the ceiling.

The surface plate 104 is arranged inside the accommodating groove 113 so that the upper surface of the surface plate 104 is at the same height as the floor surface 101b. A vibration isolating member 105 is arranged below the surface plate 104. A gap of a separation distance W104 is provided between the side wall of the surface plate 104 and the side wall of the accommodating groove 113. Therefore, the surface plate 104 is arranged so as not to come into contact with the accommodating groove 113. Since the environmental test room 2C has a gap between the side wall of the surface plate 104 and the side wall of the accommodating groove 113, the surface plate 104 and the surface plate 104 are arranged so as to fill the gap when the measurement object or the optical measuring device is installed. A bridge 115 may be installed between the accommodation groove 113 and the accommodation groove 113.

The bellows-type tent 110 (see FIG. 16) is a tent-shaped rectifying member having a bellows-shaped frame and a cloth material supported by the frame. The bellows-type tent 110 can be freely deployed and stored in the extending direction of the bellows-shaped frame, and has a function of rectifying the air flow of the conditioned air. Since the environmental test room 2C according to the fourth embodiment can form a relatively wide space around the installation portion 102 by accommodating the bellows type tent 110, the installation work of the measurement object and the optical measurement equipment Can be facilitated. Further, in the environmental test room 2C according to the fourth embodiment, the environment suitable for the measurement of the optical device can be easily formed by deploying the bellows type tent 110.

The cloth material of the bellows type tent 110 is preferably made of a radiant heat insulating material having a specular reflection surface F11 on the outer surface and a diffuse reflection surface F12 on the inner surface. Such an environmental test room 2C can suppress heat transfer from the outside to the inside of the bellows type tent 110. Therefore, the environmental test room 2C can easily converge the temperature distribution in the measurement target space to a small value.

The crane 114 (see FIG. 15) is a transport mechanism for suspending and transporting a measurement object for optical measurement. The crane 114 has a gantry structure 114a erected so as to straddle the accommodation groove 113, and a hook portion 114b suspended from the gantry structure 114a. The hook portion 114b has a configuration that allows the portal structure 114a to be freely moved in the extending direction (horizontal direction in FIG. 15) and in the vertical direction. The gantry structure 114a preferably has a structure that allows it to move in the depth direction (direction perpendicular to the paper surface of FIG. 15).

In the present embodiment, the environmental test room 2C is provided with an inlet 101in on the side wall surface 101s, and the crane 114 is arranged inside the inlet 101in. Two curtains 103 are arranged between the side wall surfaces 101s on both sides of the environmental test room 2C and the installation portion 102. The curtain 103 is installed so that the outer surface serves as a specular reflection surface F11 and the inner surface serves as a diffuse reflection surface F12. The leg portion of the gantry structure 114a of the crane 114 is arranged between the side wall surface 101s of the environmental test room 2C and the outer surface of the curtain 103. Further, a straightening vane 108 is arranged between the ceiling surface 101t of the environmental test room 2C and the ceiling portion of the portal structure 114a of the crane 114. The straightening vane 108 is installed so that the lower surface is a specular reflection surface F11 and the upper surface is a diffuse reflection surface F12. The bellows tent 110 is arranged so that it can be deployed inside the crane 114 and at a position inside the inner surface of the curtain 103.

When measuring an optical device, the operator first puts the bellows-type tent 110 in a stored state, suspends the measurement object or the optical measuring device with a crane 114, and carries it into the installation unit 102. Next, the operator lowers the object to be measured and the optical measuring device to the installation unit 102 and installs the tent 110 in an unfolded state to operate the air conditioning system 1. At this time, the control device CL controls the surface plate 104 so that the surface temperature of the surface plate 104 is the same as that of the conditioned air.

The environmental test room 2C according to the fourth embodiment does not have a step between the floor surface 101b and the upper surface of the surface plate 104. Therefore, the environmental test room 2C can make it difficult for the crane 114 to collide with the surface plate 104 when the object to be measured or the optical measuring device is suspended and carried into the installation unit 102. Therefore, the environmental test room 2C does not force the operator to carefully operate the crane 114 when performing the installation work using the crane 114. Therefore, the environmental test room 2C can easily perform the work of installing the measurement object and the optical measuring device on the installation unit 102.

As shown in FIGS. 17 and 18, in the present embodiment, the straightening vane 107 (see FIGS. 3 and 4) has been deleted, and instead, the surface plate 104 has a supply port 2in rather than a discharge port 2out. It is placed close to. Further, the straightening vane 106 has a configuration in which the length is longer (extended) in the direction of the supply port 2in than that of the first embodiment. In the environmental test room 2C according to the fourth embodiment, the temperature of the conditioned air flowing into the flow path portion 101 from the supply port 2in can be immediately controlled by the surface plate 104. Therefore, the environmental test room 2C can provide an environment more suitable for the measurement of the optical device than the environmental test room 2 according to the first embodiment.

As described above, according to the environmental test room 2C according to the fourth embodiment, the influence of the radiant heat radiated from the floor surface or the like can be reduced as in the environmental test room 2 according to the first embodiment.
Moreover, according to the environmental test room 2C according to the fourth embodiment, the accommodating groove 113 is formed on the floor, and the vibration isolating member 105 and the surface plate 104 are accommodated in the accommodating groove 113. Therefore, the environmental test room 2C according to the fourth embodiment is different from the environmental test room 2 according to the first embodiment when the object to be measured or the optical measuring device is suspended by the crane 114 and carried into the installation unit 102. It is possible to make it difficult for these to collide with the surface plate 104. Therefore, the environmental test room 2C according to the fourth embodiment does not force the operator to carefully operate the crane 114 when performing the installation work using the crane 114. Therefore, the environmental test room 2C according to the fourth embodiment can easily install the measurement object and the optical measuring device in the installation unit 102 as compared with the environmental test room 2 according to the first embodiment.

The present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of the embodiment with another configuration, and it is also possible to add another configuration to the configuration of the embodiment. In addition, it is possible to add / delete / replace other configurations for a part of each configuration.

For example, the environmental test room 2C according to the fourth embodiment can be deformed as in the environmental test room 2D shown in FIG. The environmental test room 2D is provided with a curtain 109 instead of the bellows tent 110 (see FIG. 15). The curtain 109 is a ceiling surface rectifying member that is arranged between the ceiling surface 101t of the flow path portion 101 and the installation portion 102 and rectifies the air flow of the conditioned air. The curtain 109 is configured to move with the movement of the crane 114 (see arrow A114).

Since such an environmental test room 2D includes a curtain 109 as a rectifying member for the ceiling surface, it is possible to provide an environment more suitable for measurement of optical equipment. The cloth material of the curtain 109 is preferably made of a radiant heat insulating material having a specular reflection surface F11 on the upper surface and a diffuse reflection surface F12 on the lower surface. Such an environmental test room 2D can suppress heat transfer from above to below the curtain 109. Therefore, the environmental test room 2D can easily converge the temperature distribution in the measurement target space to a small value.

Further, for example, the environmental test room 2C according to the fourth embodiment can be deformed like the environmental test room 2E shown in FIGS. 20 to 22. FIG. 20 is a rear view showing a schematic configuration of the environmental test chamber 2E according to this modified example, and shows the configuration of the environmental test chamber 2E as viewed from the rear direction. FIG. 21 is a top view showing a schematic configuration of the environmental test chamber E, and shows the configuration of the environmental test chamber 2E as viewed from above. FIG. 22 is a side sectional view showing a schematic configuration of the environmental test chamber E, and a cross section obtained by cutting the environmental test chamber 2E shown in FIG. 21 along the line X3-X3 is seen from the side surface direction (arrow direction). Shows the layout you saw.

As shown in FIGS. 20 to 22, the environmental test chamber 2E includes a plate member 121 protruding outward from the upper surface of the surface plate 104 on the outer peripheral portion of the upper surface of the surface plate 104. Here, the plate member 121 will be described as being fixed to the outer peripheral portion of the upper surface of the surface plate 104 with screws.

The plate member 121 covers the upper side of the accommodating groove 113 so that the inside of the accommodating groove 113 cannot be seen from the installation portion 102 side. That is, the plate member 121 hides the accommodating groove 113 from the installation portion 102 side. Such a plate member 121 blocks the radiant heat radiated from the groove bottom surface and the side wall surface inside the accommodating groove 113, and the radiant heat amount QR (see FIGS. 20 and 22) reaches the installation portion 102. Can be suppressed. That is, the plate member 121 can suppress the propagation of radiant heat from the inside of the accommodating groove 113 to the measurement object or the optical measuring device installed in the installation portion 102. The plate member 121 is preferably made of a metal material having excellent thermal conductivity (for example, an aluminum alloy or the like). Then, the plate member 121 may maintain the same temperature (or a very close temperature) as the surface plate 104 by heat conduction. Further, the plate member 121 preferably has a specular reflection surface F11 on the lower surface and a diffuse reflection surface F12 on the upper surface.

As shown in FIGS. 23A to 23C, the shape of the plate member 121 is configured so that the outer portion is higher than the inner portion. 23A to 23C are partial cross-sectional views of the plate member 121, respectively. In the example shown in FIG. 23A, the plate member 121 has a shape extending diagonally upward from the fastening portion. Further, in the example shown in FIG. 23B, the plate member 121 has a shape that bends and extends in two steps in an obliquely upward direction from the fastening portion. Further, in the example shown in FIG. 23C, the plate member 121 has a shape that extends obliquely upward from the fastening portion.

As shown in FIG. 24, the plate member 121 also functions as a blindfold that hides the portion from the lower end of the supply port 2in to the floor surface 101b. FIG. 24 is an explanatory view of the plate member 121.

The plate member 121 has, for example, the configuration shown in FIG. 25A. FIG. 25A is a perspective view showing a schematic configuration of a plate member 121 arranged along the side surface of the surface plate 104. In the example shown in FIG. 25A, the plate member 121 has a configuration having a wide portion 121a formed in a relatively wide planar shape and a connecting portion 121b connected to the plate members 121 arranged adjacent to each other. It has become. The connecting portion 121b is formed in a flat shape with a step on the wide portion 121a.

The plate member 121 is arranged on the side surface portion of the surface plate 104, for example, as shown in FIG. 25B. FIG. 25B is a perspective view showing an arrangement example of the plate member 121 arranged on the side surface portion of the surface plate 104. As shown in FIG. 25B, the plate member 121 is arranged so that the connecting portion 121b rides on the wide portion 121a of the plate member 121 arranged adjacent to the plate member 121. Further, as shown in FIG. 25C, for example, the plate member 121 is arranged on the corner portion of the surface plate 104. FIG. 25C is a top view showing an arrangement example of the plate member 121 arranged on the corner portion of the surface plate 104. In the example shown in FIG. 25C, the plate member 121 is composed of a rectangular flat plate-shaped corner portion 121c and adjacent portions 121d and 121e arranged adjacent to the corner portion 121c. The adjacent portions 121d and 121e are configured such that the portions facing the corner portions 121c overlap the sides of the corner portions 121c or below the sides.

The environmental test room 2E according to this modified example considers the following items.
The water-cooled surface plate 104 may be installed in the accommodating groove 113 in order to improve the convenience when carrying in the measurement object or the optical measuring device. When installed in the accommodating groove 113, radiant heat radiated from the groove bottom surface and the side wall surface of the accommodating groove 113 may reach the object to be measured. In order to prevent this, the environmental test room 2E according to this modification attaches the plate member 121 to the upper surface of the surface plate 104 as a radiant heat insulating plate that blocks radiant heat, so that the bottom surface and the side wall surface of the accommodating groove 113 It is possible to prevent the radiant heat radiated from and from reaching the installation portion 102 of the object to be measured.
The plate member 121 attached to the surface plate 104 is preferably kept out of contact with the surrounding floor, wall, or curtain in order to prevent vibration from being transmitted to the surface plate 104. The plate member 121 may have a shape extending obliquely upward from the upper surface of the surface plate 104 in order to block radiant heat without contacting the surroundings.
Further, in order to hide the portion from the lower end of the supply port 2in to the floor surface 101b, the plate member 121 has an outer peripheral portion (the end portion on the opposite side of the surface plate 104) higher than the height of the lower end of the supply port 2in. It is preferable that the configuration is arranged at a position.
Further, the plate member 121 has a specular reflection surface F11 on the lower surface of the accommodating groove 113 facing the groove bottom surface and the side wall surface in order to efficiently insulate the radiant heat radiated from the groove bottom surface and the side wall surface of the accommodating groove 113. It is good to have. Further, the plate member 121 may have a diffuse reflection surface F12 on the upper surface in order to prevent the laser light from being diffusely reflected by the plate member 121 and hindering the measurement.
Further, the plate member 121 may maintain the same temperature (or a temperature very close to) that of the surface plate 104 by heat conduction. Further, since it is desirable that the plate member 121 has the same temperature as the surface plate 104 (that is, the same temperature as the conditioned air), it is preferable that the plate member 121 is made of a material having good thermal conductivity (for example, an aluminum alloy).
Further, the plate member 121 may be removable in order to improve convenience when carrying in the object to be measured or the optical measuring device. At that time, the plate member 121 may have a divided structure in consideration of the convenience of removal. In that case, the plate member 121 may have a shape that hides the gap so that the radiant heat blocking performance is deteriorated when a gap is formed in the divided portion.

1 Air conditioning system 2,2A, 2B, 2C, 2D, 2E Environmental test room 2in Supply port 2out Discharge port 3 Dehumidifying part (dehumidifying means)
4 Dry air temperature control unit (dry air temperature control means)
5 Dry air heating unit (dry air heating means)
6 Circulation flow path 11-14 Valve 15 Bypass duct 23 Valve 30 Desiccant air conditioner 31, 34, 37 Cooler 32, 35, 38 Temperature sensor 33, 36, 39 Controller 301 Desiccant rotor 302, 303 Blower 304 Heater 40 Cooling duct 41 Blower 42 Cooler (dry air cooling means)
43 Chiller (refrigerant cooling means)
47 Tank 48 Heater (Refrigerant heating means)
49,63 Temperature sensor 61,62 Control device 51,54 Heater 52,56 Temperature sensor 53,57 Control device 55 Heat storage body 101 Flow path 101b Floor surface 101t Ceiling surface 101s Side wall surface 101in Inlet 102 Installation section 103, 103a, 103b Curtain (rectifying member)
104 Surface plate 105 Anti-vibration member 106 Rectifying plate (Rectifying member for the first surface plate)
107 Rectifying plate (rectifying member for the second surface plate)
108 Rectifying plate (rectifying member for ceiling surface)
109 Curtain (rectifying member for ceiling surface)
110 Bellows-type tent (tent-shaped rectifying member)
111 Labyrinth mechanism 112 Bottleneck 113 Containment groove 114 Crane 114a Gate type structure 114b Hook part 115 Bridge 121 Plate member 121a Wide part 121b Connecting part 121c Square part 121d, 121e Adjacent part 122 Screw CL control device (control part)
F11 Specular reflection surface F12 Diffuse reflection surface W104 Separation distance

Claims (21)

A supply port that supplies conditioned air at a specified temperature at a specified wind speed,
A discharge port that is arranged to face the supply port and discharges the conditioned air,
A flow path portion that is arranged between the supply port and the discharge port and through which the conditioned air passes,
An installation unit that is located near the center of the flow path and where an object for optical measurement is installed.
A rectifying member arranged between the side wall surface of the flow path portion and the installation portion to rectify the air flow of the conditioned air, and
Equipped with a surface plate that can heat and cool the surface,
The side wall surface of the flow path portion and the rectifying member are arranged so as to be parallel to the air flow direction of the conditioned air flowing from the supply port to the discharge port.
The surface plate is an environmental test room characterized in that it is arranged on the floor. In the environmental test room according to claim 1.
A control unit for controlling the surface temperature of the surface plate and the wind speed of the conditioned air is provided.
The control unit is an environmental test room characterized in that the surface temperature of the surface plate is controlled to be the same as that of the conditioned air. In the environmental test room according to claim 1 or 2.
An environmental test room characterized by providing a vibration isolating member for removing vibration under the surface plate. In the environmental test room according to any one of claims 1 to 3.
An environmental test room characterized in that a rectifying member for a first surface plate whose upper surface is flush with the upper surface of the surface plate is provided between the surface plate and the discharge port. In the environmental test room according to claim 4.
An environmental test room characterized in that the first surface plate rectifying member is rotatably attached to the opening surface of the discharge port. In the environmental test room according to claim 4 or 5.
An environmental test room characterized in that the first surface plate rectifying member is arranged so as not to come into contact with the surface plate. In the environmental test room according to any one of claims 4 to 6.
An environmental test room characterized in that the rectifying member for the first surface plate is made of a heat insulating material. In the environmental test room according to any one of claims 1 to 7.
An environmental test room characterized in that a rectifying member for a second surface plate whose upper surface is flush with the upper surface of the surface plate is provided between the surface plate and the supply port. In the environmental test room according to claim 8.
An environmental test room characterized in that the second surface plate rectifying member is rotatably attached to the opening surface of the supply port. In the environmental test room according to claim 8 or 9.
An environmental test room characterized in that the second surface plate rectifying member is arranged so as not to come into contact with the surface plate. In the environmental test room according to any one of claims 8 to 10.
An environmental test room characterized in that the rectifying member for the second surface plate is made of a heat insulating material. In the environmental test room according to any one of claims 1 to 11.
An environmental test room which is arranged between the ceiling surface of the flow path portion and the installation portion and includes one or a plurality of ceiling surface rectifying members for rectifying the air flow of the conditioned air. In the environmental test room according to any one of claims 1 to 12.
An environmental test room characterized in that the rectifying member is composed of a curtain that can be deployed and stored. In the environmental test room according to any one of claims 1 to 13.
An environmental test room characterized in that two or more of the rectifying members are arranged between the side wall surface of the flow path portion and the installation portion. In the environmental test room according to any one of claims 1 to 14.
An environmental test room arranged between the installation portion and the discharge port and provided with a labyrinth mechanism for guiding the air flow of the conditioned air to a bottleneck. In the environmental test room according to any one of claims 1 to 15.
A storage groove for accommodating the surface plate is formed on the floor.
The environmental test room is characterized in that the surface plate is arranged inside the accommodating groove so that the upper surface of the surface plate is flush with the floor surface. In the environmental test room according to claim 16.
A plate member that projects outward from the upper surface of the surface plate is provided on the outer peripheral portion of the upper surface of the surface plate.
An environmental test laboratory characterized in that the plate member is configured so that the outer portion is higher than the inner portion. In the environmental test room according to any one of claims 1 to 17.
An environmental test room characterized in that the surface plate is arranged closer to the supply port than the discharge port. In the environmental test room according to any one of claims 1 to 18.
An environmental test room characterized by having a crane on the ceiling for suspending and transporting an object for optical measurement. In the environmental test room according to claim 19.
An environmental test room provided with a rectifying member for a ceiling surface that moves with the movement of the crane. The environmental test laboratory according to any one of claims 1 to 20 and
A circulation flow path that returns the conditioned air discharged from the discharge port of the environmental test room to the supply port of the environmental test room, and
A blower provided in the circulation flow path to blow the conditioned air and
A heater provided in the circulation flow path to heat the conditioned air and
An air conditioning system provided near a supply port of the environmental test room, comprising a heat storage body that heats the conditioned air to a preset set air temperature.

Images