JP2018151297A - Environmental test device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an environmental test device having wet bulb temperature sensing means having a structure that wick is difficult to detach from a temperature detection part and a detection water storage part.SOLUTION: The environmental test device includes: a temperature detection sensor for wet bulb 28; a wick 25; a detection water reservoir 23 for reserving water; and wet bulb temperature sensing means 13 in which a part of the wick 25 is soaked in a water in the detection water reservoir 23 and another part of the wick 25 is allowed to be in contact with the temperature detection sensor for wet bulb 28 to thereby detect the wet bulb temperature. The environmental test device also includes wick drop prevention means 50 for preventing drop-off of the wick 25 from at least either one from the temperature detection sensor for wet bulb 28 and drop-off of the wick 25 from the detection water reservoir 23.SELECTED DRAWING: Figure 10

Description

  The present invention relates to an environmental test apparatus that has a test chamber and adjusts the test chamber to a target temperature and humidity.

  There is an environmental testing device as a device for testing the performance and durability of products and materials. The environmental test apparatus is an apparatus having a test room in which a test object is placed and having a function of adjusting the temperature and humidity in the test room to a desired test environment. The test chamber may be controlled in a low humidity environment or a high humidity environment in order to evaluate the performance and durability of the test object.

Therefore, the environmental test apparatus has a humidity detection sensor. In an environmental test apparatus, a wet and dry humidity detection sensor may be used.
Here, the dry and wet humidity detection sensor detects a so-called dry bulb temperature and wet bulb temperature. Note that “dry bulb temperature” and “wet bulb temperature” are technical terms, and do not limit the shape of the temperature measuring section.
The portion for measuring the wet bulb temperature is to cover the temperature detection portion of the temperature detection sensor with a cloth or the like (hereinafter referred to as wick) containing water and detect the temperature in that state.
Patent Document 1 discloses an environmental test apparatus using a dry and wet humidity detection sensor.

Humidity detection means employed in the environmental test apparatus disclosed in Patent Document 1 has wet bulb temperature detection means for detecting wet bulb temperature. The wet bulb temperature detection means disclosed in Patent Document 1 includes a temperature detection sensor having a rod-shaped temperature detection unit, a detection water storage unit that stores water, and a sheet-like wick.
In the wet bulb temperature detection means disclosed in Patent Document 1, the rod-shaped temperature detection unit of the temperature detection sensor is arranged in a horizontal posture, and the water tank portion of the detection water storage unit is arranged therebelow.
Further, the folded portion (crotch portion) of the sheet-like wick in the folded state is hooked and engaged with the temperature measuring portion, and the free end side of the wick is suspended from the temperature measuring portion. Then, the hanging portion of the wick is immersed in the water in the detection water storage unit, the water is sucked up by capillary action, and the temperature detection unit of the temperature detection sensor is moistened.
In the wet bulb temperature detecting means disclosed in Patent Document 1, the wick is simply folded in half and hooked and engaged with the rod-shaped temperature measuring section, so that the wick can be easily replaced.
The temperature sensor of the humidity sensor and the posture of the wick disclosed in Patent Document 1 can be compared to a shape in which a flagman holds a flag such as a national flag horizontally.

Moreover, in the environmental test apparatus disclosed by patent document 1, the wick and the water storage part for a detection are installed with the attitude | position extended in the center from the side surface of a test chamber.
That is, the test chamber has a door member for taking in and out the DUT, and has a back wall facing the door member. There is also a side wall connecting the door side and the back wall. In the environmental test apparatus disclosed in Patent Document 1, the wick and the detection water storage unit are cantilevered on the side wall side of the test chamber, and the wick and the detection water storage unit extend from the side surface side of the test chamber to the center. It has become.

In the environmental test apparatus disclosed in Patent Document 1, a sirocco fan is employed as a blower. Here, centrifugal fans such as sirocco fans have higher static pressure than axial fans such as propeller fans and can withstand the flow resistance of air-conditioning equipment. is there.
On the other hand, the centrifugal fan has a smaller amount of air flow than an axial fan such as a propeller fan, and an environmental test apparatus employing the centrifugal fan tends to have a low wind speed in the test chamber.

  Moreover, in the environmental test apparatus disclosed by patent document 1, there exists an air blower outlet of an air blower in the back wall side. The temperature detection sensor is provided at a position closer to the door member than to the back wall.

JP 2014-20777 A

In the environmental testing apparatus of the prior art, when the relationship between the rod-shaped temperature measuring unit and the wick hung on the rod-shaped temperature measuring unit and the direction of the air blowing is observed, the air blowing hits the surface of the cloth in the hanging portion of the wick in a substantially vertical direction. As described above, if the posture of the rod-shaped temperature measuring unit and the wick is compared to a state in which the flag holder holds the flag horizontally, the wind blows in the direction in which the flag (wick) flutters.
Therefore, the free end side (lower end side) of the wick swings as if the flag flutters. However, in patent document 1, since the sirocco fan is employ | adopted as an air blower, the wind speed in a test chamber is weak and the attitude | position change amount of a flag (wick) is small in many cases. Therefore, according to the configuration of the prior art, even if the wick is subjected to the wind of the blower and the posture is changed, the lower end of the wick is rarely detached from the detection water storage section.

Further, in the conventional environmental testing apparatus, the blast vector applied to the wick is mostly in the vertical direction with respect to the rod-shaped temperature detector, and the vector component in the direction along the axial direction of the temperature detector is small.
Therefore, the posture of the wick is changed in the direction of flapping by blowing air, but the force for moving the wick along the rod-shaped temperature measuring unit is small. Therefore, in the environmental testing apparatus of the prior art, there is little concern that the wick is moved by the air blowing and is detached from the temperature detecting unit and dropped.

By the way, in the market, there is a demand for an environmental test apparatus that can make the environment in the test room reach the target environment earlier and realize a rapid temperature change.
In view of this, the applicant of the present application adopted an axial blower such as a propeller fan as a blower in consideration of increasing the amount of air circulation in the tank as a measure for solving this problem.
In addition, the prototype environmental test apparatus was provided with a blow-out port forming portion that protruded from the back wall so that the air was evenly distributed in the test chamber, and the air was blown out not only in the front direction but also in an oblique direction.
According to this layout, since a space was created between the blow-out port forming portion and the side wall of the test chamber, the wet bulb temperature detecting means was disposed in the space between the blow-out port forming portion and the side wall of the test chamber.

When the environmental testing apparatus prototyped by the present inventors was driven, a new problem that was not anticipated by the environmental testing apparatus of the prior art was encountered.
In other words, when the prototype environmental test apparatus was driven, the wick of the wet bulb temperature detecting means was blown off by receiving air.
In addition, even if the wick did not blow off, the wick might fluttered like a flag and changed its posture significantly, and the lower end could be detached from the detection water reservoir.

That is, in the prototype environmental test apparatus, a strong wind is blown from an oblique direction to the wick. On the other hand, the wick is always wet when it detects humidity and contains moisture, and is unlikely to move or change its posture. However, the wick at the time of drying is merely a thin cloth and is light so that it is likely to be blown or changed in posture.
Here, the environmental test apparatus may not detect humidity depending on the content of the test. For example, when conducting an experiment in which the test object is simply exposed to a high temperature environment, there is no water in the detection water reservoir, and the wick is in a dry state.
Further, since the wick is only hooked to the temperature measuring unit so that it can be easily replaced, it is easily detached from the temperature measuring unit and the detection water storage unit.

For this reason, the wick in a light and easy-to-flight state receives wind in an oblique direction, moves along the rod-shaped temperature measuring unit, and sometimes leaves the temperature measuring unit.
Alternatively, the wick may flutter greatly due to strong winds, and the lower end may be detached from the detection water reservoir.

For example, there is a case where an experiment is performed in which the test object is exposed to a high temperature environment while ignoring the humidity, and then an experiment that considers humidity requirements is performed. When the wick is removed from the rod-shaped temperature detection part or the lower part of the wick is removed from the detection water storage part in the previous high-temperature environment test, the experiment is performed without taking notice of the humidity requirement. The humidity in the test chamber cannot be maintained at the target humidity.
Moreover, since the humidity in the test chamber cannot be determined by visual inspection from the outside, there is a concern that the experiment may be continued in a state where the humidity environment is out of order for a long time.

  An object of the present invention is to provide an environmental test apparatus provided with a wet bulb temperature detecting means having a structure in which the wick is not easily detached from the temperature detecting unit and the water storage unit for detection, paying attention to the above-described problems.

  An aspect for solving the above-described problem includes a test chamber in which a DUT is disposed, an air conditioning unit capable of adjusting at least humidity, and a humidity detection unit, and the humidity detection unit includes a temperature detection sensor. And a wick and a detection water storage part that stores water, soak part of the wick in the water in the detection water storage part, and contact the other part of the wick with the temperature detection sensor to detect the wet bulb temperature In the environmental test apparatus having a wet bulb temperature detecting means, the apparatus has a wick detachment preventing means for preventing at least one of detachment of the wick from the temperature detection sensor or detachment of the wick from the water storage portion for detection. It is an environmental test device.

  According to the present invention, the action of the wick detachment preventing means prevents the wick from detaching from the temperature detection sensor and the wick from detaching from the water storage part for detection.

  The wick disengagement prevention means is preferably provided in the vicinity of the wick, and has a guard portion that contacts the wick at all times or when the wick moves and / or changes its posture and prevents the wick from moving and / or changing its posture. .

  According to this aspect, the guard member is in contact with the wick, so that the movement of the wick and the posture change are suppressed, and the wick is prevented from being detached from the temperature detection sensor and from the detection water storage section.

  In each of the above-described aspects, the temperature detection sensor has a rod-shaped and cantilevered temperature detecting unit, a part of the wick is engaged with the temperature measuring unit, and the other part of the wick hangs down from the temperature measuring unit. The wick removal prevention means has a roll prevention guard part and a vertical drop prevention guard part, and the roll prevention guard part is a side surface of the wick that hangs down. And the height direction is less than the height of the temperature detection unit and at a position equal to or higher than the water level of the detection water storage unit, and the vertical drop prevention guard unit is located on the free end side of the temperature detection unit. In the height direction, it is desirable to be at a position that is not more than the height of the temperature detecting section and not less than the height of the water surface of the detection water storage section.

Here, “engagement” includes a state in which a gauze-like wick is folded in half and simply hooked onto a rod-shaped temperature measuring unit. The term “engaged” is a concept including a form that is simply hooked, and the state of “hooked” is an aspect of “engaged”.
In addition, a state in which a temperature detecting portion insertion portion is provided in the wick, the temperature detecting portion of the temperature detection sensor is inserted into the temperature detecting portion insertion portion, and the wick is attached to the temperature detecting portion is also an aspect of “engagement”.
In this aspect, the roll prevention guard is on the side of the wick in a suspended state. That is, the roll prevention guard part is in the direction in which the wick shakes.
Further, the roll prevention guard portion is located at a position that is less than the height of the temperature detection portion in the height direction and equal to or higher than the height of the water surface of the detection water storage portion. Therefore, the roll prevention guard part is at a height at which the wick hits.
Therefore, when the wick flutters like a flag, it strikes the roll prevention guard part, and the movement and posture change of the wick are suppressed.
Further, the vertical drop prevention guard portion is on the free end side of the temperature detecting portion. That is, the vertical slip-off prevention guard portion is in a position in the direction in which the wick moves in the axial direction.
Further, the vertical slip-off prevention guard portion is at a position that is not more than the height of the temperature detection portion in the height direction and not less than the height of the water surface of the detection water storage portion. Therefore, the vertical slip prevention guard portion is at a height at which the wick hits.
Therefore, when the wick moves along the temperature measuring section, it hits the vertical drop prevention guard section, and the movement of the wick is suppressed.

  In each of the above-described aspects, the temperature detection sensor has a rod-shaped and cantilevered temperature detecting unit, a part of the wick is engaged with the temperature measuring unit, and the other part of the wick hangs down from the temperature measuring unit. It is immersed in the water in the water storage part for detection, has a blower, the wet bulb temperature detection means is placed in the ventilation atmosphere by the blower, and the vector of the blow applied to the wick is the axial direction of the temperature detection part The wick removal prevention means includes a roll prevention guard part and a vertical drop prevention guard part, and both the roll prevention guard part and the vertical drop prevention guard part are from the wick. Is also preferably downstream of the ventilation direction.

This aspect employs the structure of a prototype environmental test apparatus.
In this aspect, the roll prevention guard part and the vertical drop prevention guard part are both provided downstream of the wick in the ventilation direction. Therefore, the posture change in the rolling direction and the movement in the axial direction of the wick caused by the blowing are prevented.

  In each of the above-described aspects, it has a blower, the wet bulb temperature detecting means is placed in a ventilation atmosphere by the blower, and the wet bulb temperature detecting means is configured such that a part of a wick is engaged with the temperature detecting unit, The other part of the wick hangs down from the temperature measuring part and is immersed in the water in the detection water storage part, and the wick is expected to move and / or change its posture by blowing air from the blower. The preventive means is on the expected wick movement side and / or posture change side, and contacts the wick when the wick moves and / or changes posture, and prevents wick movement and / or posture change. Is desirable.

The structure of the prototype environmental test apparatus is also adopted for this embodiment.
In this aspect, since the wick disengagement prevention means is provided on the expected wick movement side or posture change side, the change in the posture of the wick in the roll direction and the movement in the axial direction caused by air blowing are prevented. .

  In each aspect described above, it is desirable that the wick detachment preventing means has a bent bar shape, and both ends are supported by the inner walls of the test chamber.

  According to this aspect, the wick detachment preventing means is unlikely to obstruct ventilation. Further, since the heat capacity of the wick detachment preventing means can be reduced, it is difficult to affect the environment in the test room.

  In each of the above-described aspects, the test chamber has a door member that opens and closes, the test chamber has a back wall facing the door member, and air blown by the blower is directed from the back wall side to the door member side, and temperature detection It is desirable that the sensor has a rod shape and is arranged in a posture from the back wall side toward the test chamber side.

  According to this aspect, the space of the test room can be used effectively.

  In each of the above embodiments, the test chamber has a door member that opens and closes the test chamber, the test chamber has a back wall facing the door member, an air blow-out portion that blows air into the test chamber on the back wall side, and an air blow-out portion There is a blow-out port forming portion that protrudes from the back wall side toward the test chamber side, and it is desirable that a part or all of the wet bulb temperature detecting means is located on the side surface side of the blow-out port forming portion.

The structure of the prototype environmental test apparatus is also adopted for this embodiment.
According to this aspect, the space of the test room can be used effectively.

  In the environmental test apparatus according to the present invention, the wick of the wet bulb temperature detection means is unlikely to be detached from the temperature detection unit or the detection water storage unit. Therefore, the environmental test apparatus of the present invention is less susceptible to erroneous humidity detection, and can maintain the humidity environment in the test chamber in a desired environment.

1 is a perspective view of an environmental test apparatus according to an embodiment of the present invention. It is sectional drawing of the test chamber part of the environmental test apparatus of FIG. (A) is a plane sectional view in the state where the shelf member of the test room part of the environmental test device of Drawing 1 was omitted, and (b) is an enlarged view in a circle of (a). It is a cross-sectional perspective view of the test chamber of the environmental test apparatus of FIG. It is a perspective view of the wet bulb temperature detection means with which the environmental test apparatus of FIG. 1 was equipped. It is a disassembled perspective view of the wet bulb temperature detection means of FIG. It is sectional drawing of the wet bulb temperature detection means of FIG. FIG. 2 is a perspective view of a wick detachment preventing unit employed in the environmental test apparatus of FIG. 1. It is a top view of the wick detachment | leave prevention means of FIG. The relationship between the wick detachment preventing means and the wet bulb temperature detecting means in a windless environment is shown, (a) is a perspective view thereof, (b) is a plan view thereof, and (c) is a sectional view taken along line AA of (a). The relationship between the wick detachment preventing means and the wet bulb temperature detecting means when the wind hits in a direction perpendicular to the wick is shown, (a) is a perspective view, (b) is a plan view, and (c) is ( It is AA sectional drawing of a). The relationship between the wick detachment preventing means and the wet bulb temperature detecting means when the wind hits the wick in the direction along the temperature detection sensor, (a) is a perspective view thereof, (b) is a plan view thereof, (c) ) Is an AA cross-sectional view of (a). The relationship between the wick detachment preventing means and the wet bulb temperature detecting means when the wind strikes the wick is shown, (a) is a perspective view, (b) is a plan view, and (c) is (a). It is AA sectional drawing of). It is a perspective view which shows the relationship between the wick detachment | leave prevention means and wet-bulb temperature detection means of other embodiment of this invention. It is a perspective view which shows the relationship between the wick detachment | leave prevention means and wet-bulb temperature detection means of further another embodiment of this invention. It is a perspective view of the wick detachment | leave prevention means of other embodiment of this invention. It is a perspective view of the wick detachment | leave prevention means of other embodiment of this invention. It is a perspective view which shows the relationship between the wick detachment | leave prevention means and wet-bulb temperature detection means of further another embodiment of this invention. It is a perspective view which shows the relationship between the wick detachment | leave prevention means and wet-bulb temperature detection means of further another embodiment of this invention. It is a perspective view which shows the relationship between the wick detachment | leave prevention means and wet-bulb temperature detection means of further another embodiment of this invention. It is a perspective view which shows the relationship between the wick detachment | leave prevention means and wet-bulb temperature detection means of further another embodiment of this invention. (A), (b), (c) shows the modification of a wick, and is a perspective view of a wick and a temperature detection part.

Embodiments of the present invention will be further described below.
First, the basic structure of the environmental test apparatus 1 of the present embodiment will be described. The basic structure of the environmental test apparatus 1 has the characteristics of the prototype described above.
As shown in FIG. 1, the environmental test apparatus 1 according to the present embodiment is divided into an upper test chamber region 100 and a lower machine region 101.
In the test room region 100, a heat insulating tank 3 covered with a heat insulating wall 2 is installed as shown in FIG. A test chamber 5 is formed in a part of the heat insulating tank 3. The test chamber 5 is a space for installing a device under test. The heat insulating layer 3 is constituted by a test chamber body 21 and a door member 20. The test chamber 5 is formed in a part of the heat insulation layer 3 surrounded by six surfaces by the test chamber main body 21 and the door member 20.
The environmental test apparatus 1 further includes an air conditioner (air conditioner) 10 and a blower 11. The air conditioner 10 includes a humidifier 6, a cooling device 7, and a heater 8.
The environmental test apparatus 1 includes an air conditioning ventilation passage 15 that communicates with the test chamber 5 in a ring shape, and the air conditioning equipment 10 and the blower 11 described above are incorporated in the air conditioning ventilation passage 15.

The air-conditioning ventilation path 15 is formed in a part of the heat insulating tank 3 and communicates with the test chamber 5 at two locations of the air blowing section 16 and the air introducing section 18.
Therefore, when the blower 11 is activated, the air in the test chamber 5 is introduced from the air introduction unit 18 into the air conditioning ventilation path 15. Then, the air conditioning ventilation path 15 enters the ventilation state, air contacts the air conditioning equipment 10 to perform heat exchange and humidity adjustment, and the adjusted air is blown into the test chamber 5 from the air blowing section 16.

Further, a temperature sensor 12 and a wet bulb temperature detection means 13 are provided in the vicinity of the air blowing portion 16 of the air conditioning ventilation path 15. The temperature sensor 12 is a conventionally known temperature sensor such as a thermocouple or a thermistor.
The wet bulb temperature detection means 13 detects the wet bulb temperature. The dry bulb temperature detected by the temperature sensor 12 and the wet bulb temperature detected by the wet bulb temperature detection means 13 are input to a control device (not shown), and the humidity is calculated from the difference between the two.
The structure and mounting position of the wet bulb temperature detection means 13 will be described later.
When the environmental test apparatus 1 is used, the air blower 11 is operated to bring the air-conditioning ventilation path 15 into a ventilation state, and the air-conditioning apparatus 10 is controlled so that the detected value of the temperature sensor 12 approaches the temperature of the set environment.
Further, the humidity is calculated from the dry bulb temperature detected by the temperature sensor 12 and the wet bulb temperature detected by the wet bulb temperature detecting means 13, and the air conditioner 10 is controlled so that the calculated humidity approaches the humidity of the set environment.
The structure and mounting position of the wet bulb temperature detection means 13 will be described later.

In the environmental test apparatus 1, as shown in FIGS. 3 and 4, the air blowing section 16 of the air-conditioning ventilation path 15 is provided on the back side of the test chamber 5, and the blower 11 is installed therein.
In this embodiment, the blower 11 is an axial blower and is a propeller fan.
As is well known, an axial blower has a larger amount of air flow than a centrifugal blower such as a sirocco fan.
In the present embodiment, a wind direction member 71 is provided on the front side of the blower 11. The cross-sectional shape of the airflow direction member 71 is a trapezoid, and has a front air blowing surface 72 and side air blowing surfaces 73a and 73b. In the present embodiment, the wind direction member 71 is substantially the air blowing portion 16 of the air conditioning ventilation path 15.

The front air blowing surface 72 of the airflow direction member 71 is a surface facing the door member 20 substantially in parallel, and a plurality of openings are provided on the surface. The air is blown from the front air blowing surface 72 toward the door member 20.
On the other hand, the side air blowing surfaces 73 a and 73 b are inclined with respect to a virtual straight line connecting the blower 11 and the door member 20. A plurality of openings are also provided in the side air blowing surfaces 73a and 73b. The air blown from the side air blowing surfaces 73a, 73b hits the side walls 31, 32 from an oblique direction.

In the axial blower, the wind generated by the vicinity of the outer periphery of the propeller fan is strong, and the wind speed is low near the rotation center.
However, in the environmental test apparatus 1 of this embodiment, the wind direction member 71 is provided in the front side of the air blower 11, and the air injected from the side surface air blowing surfaces 73a and 73b of the wind direction member 71 is on the side walls 31 and 32 side. It has a vector component in the direction to go. Therefore, the air jetted from the side air blowing surfaces 73a and 73b collides with the side walls 31 and 32, is reflected, and returns to the center side. For this reason, the air is distributed to the front side of the rotation center of the blower 11.

  In the present embodiment, since the air blowing portion 16 is provided in the back wall and the air blowing portion 16 has a shape in which the central portion protrudes toward the door member 20 side, the side air blowing surfaces 73a and 73b and the side wall 31 of the test chamber 5 are provided. There is a space 80 between 32.

In the present embodiment, as shown in FIG. 2, shelves 55 can be provided in the test chamber 5, and two shelf receiving members 61 are provided on each of the left and right side walls 31 and 32 of the test chamber body 21. It has been.
The shelf receiving member 61 is a columnar member having a concave cross-sectional shape. The shelf receiving member 61 is provided with a plurality of engaging holes 62 (see FIG. 4) for engaging the end portions of the shelf 55 in the vertical direction.
Two shelf receiving members 61 are provided on the left side wall 31 and two on the right side wall 32.

Next, the wet bulb temperature detection means 13 employed in this embodiment will be described.
The wet bulb temperature detection means 13 detects the wet bulb temperature as described above, and constitutes a part of the humidity detection means.
As shown in FIGS. 5 and 6, the wet bulb temperature detection means 13 has a wet bulb temperature detection sensor 28, a wick 25 that covers the detection portion of the wet bulb temperature detection sensor 28, and a detection water storage portion 23. doing. The detection water storage unit 23 is a member called a wick pan and is a container for storing water.
The wet bulb temperature detection sensor 28 is a temperature sensor such as the above-described thermocouple or thermistor, and includes a rod-shaped temperature detection unit 26 having a certain length.
The wet bulb temperature detection means 13 immerses a part of the wick 25 in the water in the detection water storage unit 23 and brings the other part of the wick 25 into contact with the wet bulb temperature detection sensor 28 to detect the wet bulb temperature. Is.

  In the present embodiment, an outer portion 27 is provided around the detection water storage portion 23 of the wet bulb temperature detection means 13 to collect the water flowing out from the detection water storage portion and guide it to the humidifying device 6 side.

  The wick 25 is a cloth or gauze that can retain moisture and has a sheet shape. The wick 25 may be any other material as long as it can vaporize the retained moisture in accordance with the environment such as the atmospheric temperature and the atmospheric humidity.

  As shown in FIG. 6, the detection water storage section 23 has an open water passage having a semicircular cross-sectional shape with the upper part of a cylindrical pipe open, and a storage space 37 for storing water is provided in the open water passage. Is provided. The storage space 37 is a space that is surrounded by a semicircular pipe wall and a weir portion 38 and is open at the top.

The outer section 27 collects the water overflowed from the detection water storage section 23 and flows it downward.
The wet bulb temperature detection means 13 is inserted into the outer portion 27 with the detection water storage portion 23 facing the open side of the storage space 37 upward.
The wet bulb temperature detection sensor 28 is located immediately above the detection water reservoir 23, and the temperature detector 26 is in a horizontal posture.

And the wick 25 is hooked on the said temperature detection part 26 (one aspect of engagement).
In the wick 25, gauze or the like is folded in half, and the folded portion (crotch portion) in the folded state is hooked to the temperature measuring unit 26, and the free end side 33 of the wick 25 is suspended from the temperature measuring unit 26. It has become.
That is, the folded portion (crotch portion) of the wick 25 is engaged with the temperature measuring portion 26, and the free end 33 of the wick 25 is a hanging portion 35 that hangs down from the temperature measuring portion 26.
And the lower part of the hanging part 35 of the wick 25 is immersed in the water in the detection water storage part 23, sucks up water by a capillary phenomenon, and wets the temperature detection part 26 of the temperature detection sensor 28 for wet bulbs.
In this way, the wet bulb temperature detection sensor 28 is in a horizontal posture, and the temperature detection unit 26 is disposed so as to be covered with the wick 25.

The shape and engagement state of the wick 25 are not limited, and may be, for example, as shown in FIG. Each of the wicks 40, 41, and 42 shown in FIGS. 22A, 22B, and 22C is formed using sewing, an adhesive, or the like.
A wick 40 shown in FIG. 22 (a) is obtained by folding a sheet-like cloth in two and joining parts of the front and back cloths 45a and 45b by stitching the vicinity of the bent part with a thread 47 or the like. It is. In the wick 40 shown in FIG. 22A, the cloths 45a and 45b on the front and back sides are connected in an annular shape at the bent portion, and a long hole-shaped temperature detecting portion insertion portion 46 is formed.
In the wick 40 shown in FIG. 22A, the temperature detecting unit 26 of the wet bulb temperature detection sensor 28 is inserted into the temperature detecting unit inserting unit 46, and the temperature detecting unit inserting unit 46 of the wick 40 is engaged with the temperature detecting unit 26. Yes.

A wick 41 shown in FIG. 22 (b) is an evolution of the wick 40 of FIG. 22 (a), and is formed by stitching the hem portions of the cloths 45a and 45b on the front and back sides.
A wick 42 shown in FIG. 22 (c) is provided with a temperature detecting portion insertion portion 46 at the end of one piece of cloth.

  Next, the wick removal prevention means 50 will be described. As shown in FIG. 3, the wick detachment preventing means 50 is a guard disposed in the vicinity of the wet bulb temperature detection means 13, and the wick 25 is detached from the wet bulb temperature detection sensor 28, and the wick 25 detection water. This prevents the detachment from the storage unit 23.

  In this embodiment, the wick detachment preventing means 50 is made by bending a single thin metal wire. It is desirable that the material of the wick detachment preventing means 50 has a considerable rigidity and can withstand a high temperature environment, a low temperature environment, and a high humidity environment. For example, it is desirable to use a metal rod such as stainless steel or brass. In the present embodiment, a stainless round bar having a diameter of 2 to 3 mm is adopted as a material of the wick detachment preventing means 50.

The wick detachment preventing means 50 has a complicated shape as shown in FIGS.
Explaining from the end side, the side surface engaging piece 51, the rising piece 52, the overhanging piece 53, the longitudinal drop prevention guard portion 56, the roll prevention guard portion 57, the return piece 58 and the back side engagement piece 60 are continuous. It is formed. In the present embodiment, the vertical drop prevention guard part 56 and the roll prevention guard part 57 are functional parts that prevent the wick from being detached.
Of each part of the wick detachment preventing means 50, the overhanging piece 53, the longitudinal drop prevention guard part 56, the roll prevention guard part 57, the return piece 58 and the back side engagement piece 60 are in the same common plane.
On the other hand, the rising piece 52 extends in a direction perpendicular to the common plane. The side engaging piece 51 is a portion where the tip of the rising piece 52 is bent.

To explain sequentially, the side engaging piece 51 is a portion that engages with the right side wall 32 side of the test chamber 5 and supports one end of the wick detachment preventing means 50, and is mounted as shown in FIGS. It is a short piece extending in the horizontal direction based on the posture at the time.
The rising piece 52 holds the functional portions (the vertical slip prevention guard portion 56 and the roll prevention guard portion 57) at a predetermined height and extends at an angle in the vertical direction with respect to the side engagement piece 51. .
The rising piece 52 is a portion that rises in the vertical information with reference to the posture at the time of mounting as shown in FIGS. 8 and 10A.

The overhanging piece 53 is a part that protrudes so that the end of the vertical slip prevention guard 56 extends away from the right side wall 32 of the test chamber 5 so that the vertical slip prevention guard 56 straddles the wick 25.
The overhanging piece 53 is bent vertically from the rising piece 52 and extends in the same direction as the side engaging piece 51 in the horizontal direction.
The overhanging piece 53 is a portion extending in the horizontal direction with reference to the posture at the time of mounting as shown in FIGS. 8 and 10A.

The vertical slip prevention guard portion 56 prevents the wick 25 from moving in the axial direction, and is a folded piece folded back in a “V” shape with respect to the overhanging piece 53.
The vertical slip-off prevention guard portion 56 is in a horizontal posture with reference to the posture at the time of mounting as shown in FIGS. 8 and 10A, but the overhanging piece 53 is also against the roll prevention guard portion 57. However, it is inclined at a predetermined angle.
The effective length La of the vertical slip prevention guard portion 56 is a length that can straddle at least the folded wick 25 horizontally. That is, although the vertical slip-off prevention guard portion 56 is inclined, if the component in the width direction of the test chamber 5 is an effective length La, La can straddle at least the folded wick 25 in the cloth thickness direction. Length.

The roll prevention guard part 57 is bent at a predetermined angle with respect to the vertical drop prevention guard part 56. The through-hole prevention guard portion 57 is a portion extending in the horizontal direction with reference to the posture at the time of mounting as shown in FIGS. 8 and 10A, and is inclined at a predetermined angle with respect to the vertical-hole prevention guard portion 56. ing.
The through-hole prevention guard portion 57 is a portion extending in the horizontal direction on the basis of the posture at the time of mounting as shown in FIGS. 8 and 10A.
The through-hole prevention guard portion 57 has a length corresponding to the width of the large area portion of the wick 25 (the width extending in the depth direction).

As described above, the roll prevention guard portion 57 and the vertical drop prevention guard portion 56 are in an inclined relationship. In the present embodiment, as shown in FIG. 9, the angle A formed by the roll prevention guard part 57 and the vertical drop prevention guard part 56 is an obtuse angle. The angle A formed by the roll prevention guard part 57 and the vertical drop prevention guard part 56 is not limited, but is preferably 90 degrees or more.
Furthermore, the angle between the two is 100 degrees to 160 degrees. The most recommended angle is 130 to 150 degrees. In the present embodiment, the angle A between them is 135 degrees.

  The return piece 58 is a portion bent perpendicularly to the roll prevention guard portion 57. The return piece 58 is a portion that extends in the horizontal direction and approaches the right side wall 32 side of the test chamber 5 with reference to the posture at the time of mounting as shown in FIGS. 8 and 10A.

  The back side engagement piece 60 is a portion bent perpendicular to the return piece 58. The back side engagement piece 60 is a part that extends in the horizontal direction and approaches the back wall 30 side of the test chamber 5 with reference to the posture at the time of mounting as shown in FIGS. 8 and 10A.

Next, the mounting positions of the temperature sensor 12, the wet bulb temperature detecting means 13 and the wick detachment preventing means 50 with respect to the test chamber 5 and the relative positions of the wet bulb temperature detecting means 13 and the wick detachment preventing means 50 will be described.
The temperature sensor 12, the wet bulb temperature detecting means 13, and the wick detachment preventing means 50 are arranged in a space 80 between the side air blowing surface 73b and the right side wall 32 of the outlet forming portion as shown in FIGS. .
That is, in the present embodiment, the air blowing portion 16 is provided in the back wall, and a part of the air blowing portion 16 protrudes to the door member 20 side, so that there is a space between the side air blowing surfaces 73 a and 73 b and the side walls 31 and 32 of the test chamber 5. There are 80.
In the horizontal direction, as shown in FIG. 3, the temperature sensor 12 is provided on the side air blowing surface 73b side, the wet bulb temperature detecting means 13 side is provided on the right side wall 32 side thereof, and wick detachment prevention is provided on the right side wall 32 side. There is a means 50.

Both the temperature sensor 12 and the wet bulb temperature detection means 13 are cantilevered with the back wall 30 as a base end. The portions extending in the longitudinal direction on the temperature sensor 12 and wet bulb temperature detecting means 13 side extend in parallel with the right side wall 32.
Therefore, the temperature sensor 12 and the wet bulb temperature detection sensor 28 of the wet bulb temperature detection means 13 are both cantilevered from the back wall 30 side, and the free ends are directed toward the door member 20. .

The wick detachment prevention means 50 is supported at both ends by the right side wall 32 and the back wall 30.
More specifically, the rising piece 52 of the wick detachment preventing unit 50 is held by the shelf receiving member 61 provided on the right side wall 32 of the test chamber 5, and the side engagement piece 51 which is one end of the wick detachment preventing unit 50 is provided. The insertion hole (not shown) formed in the shelf receiving member 61 is inserted.
Further, a back side engagement piece 60 which is the other end of the wick detachment preventing means 50 is inserted into a mounting hole (not shown) of the back wall 30 of the test chamber 5.
As a result, both ends of the wick detachment preventing means 50 are supported by the test chamber 5, and as shown in FIG. 10, the overhanging piece 53, the vertical drop prevention guard part 56, the roll prevention guard part 57, the return piece 58 and the back side. A common plane constituted by the engagement pieces 60 is in a horizontal posture in the vicinity of the wick 25.

Here, the positional relationship between the wick detachment preventing means 50 and the wick 25 will be described. The wick detachment preventing means 50 is in the vicinity of the wick 25, but in a windless state, the wick detachment preventing means 50 is as shown in FIG. Is not in contact with Wick 25.
The roll prevention guard portion 57 of the wick detachment preventing means 50 is closer to the right side wall 32 of the test chamber 5 than the wick 25 is. The roll prevention guard part 57 has a length corresponding to the width of the wick 25 in the insertion direction, and the roll prevention guard part 57 covers the surface of the wick 25 in the width direction (insertion direction).
The wick detachment preventing means 50 is in a horizontal posture, and the position when viewed in plan is parallel to the wet bulb temperature detection sensor 28, and with respect to the large area side (surface side) of the hanging portion 35 of the wick 25. Parallel.
The height of the roll prevention guard portion 57 is the position of the intermediate height of the hanging portion 35 of the wick 25.
The roll prevention guard portion 57 is on the side surface side of the wick 25 in a suspended state and is below the height of the temperature detection portion 26 in the height direction, and at a position higher than the height of the water surface of the detection water storage portion 23. is there.

The vertical drop prevention guard 56 of the wick removal prevention means 50 is on the free end side of the wet bulb temperature detection sensor 28 and is located slightly away from the free end. The vertical drop prevention guard portion 56 is in a horizontal posture, and the posture in plan view is inclined with respect to the axis of the temperature detecting portion 26 of the wet bulb temperature detection sensor 28.
The vertical slip prevention guard portion 56 is disposed so as to straddle the wick 25 in the cloth thickness direction.

Next, the function of the wick removal prevention means 50 of this embodiment will be described.
As described above, the temperature sensor 12, the wet bulb temperature detecting means 13, and the wick detachment preventing means 50 are provided in the space 80 between the side air blowing surface 73b and the right side wall 32 of the outlet forming portion as shown in FIGS. It is arranged in. The air flowing out from the side air blowing surface 73b strikes the right side wall 32 from an oblique direction.

Here, in this embodiment, since the wet bulb temperature detecting means 13 is located between the side air blowing surface 73b and the right side wall 32, the wet bulb temperature detecting means 13 receives wind from an oblique direction as indicated by an arrow V in FIG. .
If the wind vector is V, the direction orthogonal to the wet bulb temperature detection sensor 28 is the X direction, and the direction along the wet bulb temperature detection sensor 28 is the Y direction, the blowing is the wet bulb temperature detection sensor. 28 has a vector VX in a direction orthogonal to 28 and a vector VY in a direction along the wet bulb temperature detection sensor 28.
Therefore, as shown in FIG. 11, the hanging portion 35 of the wick 25 sways to the leeward side due to the wind direction component in the direction orthogonal to the wet bulb temperature detection sensor 28.

Here, in the present embodiment, the roll prevention guard portion 57 of the wick detachment preventing means 50 is applied from the wick 25 to the wind direction component (X direction) in the direction orthogonal to the wet bulb temperature detection sensor 28 as shown in FIG. Is also in the leeward position.
Therefore, when the hanging portion 35 of the wick 25 is shaken, the large area portion of the wick 25 comes into contact with the rolling prevention guard portion 57 as shown in FIG. 11 and prevents the hanging portion 35 from swinging further.
Therefore, even if the wick 25 receives wind having a wind direction component in a direction orthogonal to the wet bulb temperature detection sensor 28, the amount of swinging of the hanging portion 35 is small, and the lower end portion (free end 33) of the wick 25 is stored as water for detection. The separation from the portion 23 is prevented.

  The posture of the wick 25 is changed so that the flag is fluttered by the blower of the blower 11, but the roll prevention guard portion 57 is on the expected posture change side of the wick 25 and contacts the wick 25 when the wick 25 changes the posture. And acts to prevent the wick 25 from changing its posture.

Further, as shown in FIG. 12, the vertical drop prevention guard 56 of the wick removal prevention means 50 is related to the wet bulb temperature detection sensor 28 and the wind direction component (Y direction) along the wet bulb temperature detection sensor 28 from the wick 25. Is also in the leeward position.
Therefore, when the hanging portion 35 of the wick 25 moves in the axial direction as shown in FIG. 12, the end of the wick 25 comes into contact with the vertical slip-off preventing guard portion 56 as shown in FIG. 12, and the wick 25 further extends in the axial direction. Prevent moving to.

  Therefore, even if the wick 25 receives wind in the direction along the wet bulb temperature detection sensor 28, the amount of movement of the wick 25 is small, and the wick 25 is prevented from being detached from the wet bulb temperature detection sensor 28.

  The wick 25 moves in the axial direction of the temperature sensor 28 for wet bulb due to the air blown by the blower 11, but the vertical drop prevention guard portion 56 is on the expected movement side of the wick 25 and moves when the wick 25 moves. 25, and serves to prevent movement of the wick 25.

  Actually, wind strikes the wick 25 from an oblique direction. When both the X-direction component and the Y-direction component of the wind are large, as shown in FIG. 13, the large area portion of the wick 25 hits the roll prevention guard portion 57, and the vertical edge of the wick 25 is the vertical drop prevention guard portion. 56.

Next, another embodiment of the present invention will be described. In the following description, the same number is attached | subjected about what exhibits the function similar to previous embodiment even if it is a member from which a shape differs. In the explanation and drawings, emphasis is placed on the functional unit that prevents the wick from being removed, and the illustration and explanation of the mounting relationship with the test chamber 5 are omitted.
In the embodiment described above, the angle A formed by the roll prevention guard part 57 and the vertical drop prevention guard part 56 is an obtuse angle. By making the angle A formed by the roll prevention guard portion 57 and the vertical drop prevention guard portion 56 an obtuse angle, the wick 25 can be easily attached and the wick 25 is not easily blown.
However, the present invention is not limited to this configuration, and even if the roll prevention guard portion 57 is orthogonal to the vertical drop prevention guard portion 56 as in the wick separation prevention means 82 shown in FIG. Good. Further, the angle A may be an acute angle.

  In the embodiment described above, the roll prevention guard portion 57 is disposed only on the leeward side. However, like the wick separation prevention means 83 shown in FIG. .

In the embodiment described above, the wick detachment prevention means 50 and the like are all processed wires, but have a certain area like the wick detachment prevention means 85 and 86 shown in FIGS. You may do it.
However, it is desirable that the wick detachment preventing means is one through which wind passes. In the wick detachment prevention means 85 shown in FIG. 16, a roll prevention guard portion 57 is formed by a plate having a ventilation opening 88, and a vertical drop prevention guard portion 56 is constituted by two upper and lower bars.
In addition, the wick removal prevention means 86 shown in FIG. 17 includes a roll prevention guard portion 57 and a vertical drop prevention guard portion 56 formed of a net.

  In the embodiment described above, the roll prevention guard portion 57 has a horizontal bar shape and has a horizontal component. However, like the wick release prevention means 87 shown in FIG. The guard part 57 may be suspended from the support part 90.

  In the embodiment described above, the roll prevention guard portion 57 and the vertical drop prevention guard portion 56 are inseparable from each other, but the roll prevention guard portion 57 and the vertical drop prevention guard are provided as in the wick detachment prevention means 91 shown in FIG. The part 56 may be separated. Moreover, it may be provided in the water storage part 23 for detection like the wick detachment preventing means 92 shown in FIG.

  Further, as shown in FIG. 21, the tip of the wet bulb temperature detection sensor 28 may be processed to form a vertical drop prevention guard portion 56.

In the embodiment described above, the wick detachment preventing unit 50 or the like does not touch the wick 25 in the no-wind state, but the wick detachment preventing unit 50 or the like may touch the wick 25 even in the no-wind state.
In the embodiment described above, the wick detachment preventing means 50 and the like have both the roll prevention guard part 57 and the vertical drop prevention guard part 56, but may have only one of them. That is, the roll prevention guard part 57 may not be provided, and the vertical drop prevention guard part 56 may not be provided.

Moreover, in the wick detachment preventing means 50 described above, the roll prevention guard portion 57 is located on the side surface side of the wick 25, so that the movement of the wet bulb temperature detection sensor 28 in the wick 25 cannot be prevented in the axial direction. It mainly has the function of preventing the wick 25 from rolling.
On the other hand, the vertical slip prevention guard portion 56 has a weak function of preventing the wick 25 from rolling, and mainly functions to prevent the wick 25 from moving in the axial direction.
Thus, in the wick detachment preventing means 50, the function of each member is clear, and it is clear that one is a member for preventing rolling and the other is a member for preventing vertical dropout.
However, the present invention is not limited to the function of each part as described above, and may have a portion having both functions of preventing rolling and preventing vertical slipping.

1 Environmental test equipment 5 Test room 10 Air-conditioning equipment (air-conditioning means)
DESCRIPTION OF SYMBOLS 11 Blower 13 Wet bulb temperature detection means 16 Air blowing part 20 Door member 21 Test chamber body 23 Detection water storage part 25 Wick 26 Temperature detection part 28 Wet bulb temperature detection sensor 50 Wick detachment prevention means 56 Vertical drop prevention guard part 57 Rolling Prevention guard part 71 Airflow direction member 73a, 73b Side air blowing surface 82, 83, 85, 86, 87, 91, 92 Wick detachment prevention means

Claims (8)

A test chamber in which the object to be tested is placed, air conditioning means capable of adjusting humidity at least, and humidity detection means,
The humidity detection means includes a temperature detection sensor, a wick, and a detection water storage section for storing water, a part of the wick is immersed in water in the detection water storage section, and another part of the wick is a temperature detection sensor. In an environmental test apparatus having a wet bulb temperature detecting means for detecting wet bulb temperature by contacting the wet bulb,
An environmental test apparatus comprising wick removal prevention means for preventing at least one of removal of a wick from a temperature detection sensor or separation from a wick detection water storage section.   The wick disengagement prevention means is provided in the vicinity of the wick, and has a guard part that contacts the wick at all times or when the wick moves and / or changes its posture and prevents the wick from moving and / or changing its posture. The environmental test apparatus according to claim 1. The temperature detection sensor is a rod-shaped and has a temperature measuring part that is cantilevered, a part of the wick engages with the temperature measuring part, and the other part of the wick hangs down from the temperature measuring part, and the water in the detection water storage part Is immersed in
The wick removal prevention means has a roll prevention guard part and a vertical drop prevention guard part,
The roll prevention guard portion is on the side surface side of the wick in a suspended state, and is in a height direction that is less than the height of the temperature detection portion and at a position equal to or higher than the water surface height of the detection water storage portion,
The vertical slip-off prevention guard part is on the free end side of the temperature detection part, and is in a height direction at a position equal to or less than the height of the temperature detection part and higher than the height of the water surface of the detection water storage part. The environmental test apparatus according to claim 1 or 2. The temperature detection sensor is a rod-shaped and has a temperature measuring part that is cantilevered, a part of the wick engages with the temperature measuring part, and the other part of the wick hangs down from the temperature measuring part, and the water in the detection water storage part Is immersed in
The wet bulb temperature detection means is placed in a ventilation atmosphere by the blower, and the vector of the blow applied to the wick includes an axial component of the temperature detector and a component in a direction across the temperature detector,
The wick removal prevention means has a roll prevention guard part and a vertical drop prevention guard part,
4. The environmental test apparatus according to claim 1, wherein the roll prevention guard portion and the vertical drop prevention guard portion are both downstream of the wick in the ventilation direction. The wet bulb temperature detecting means is placed in a ventilated atmosphere by the blower, and the wet bulb temperature detecting means is configured such that a part of the wick is engaged with the temperature detecting unit, and the other part of the wick is It hangs down from the temperature detector and is immersed in the water in the detection water reservoir,
The wick is expected to move and / or change posture by the blower of the blower, and the wick disengagement prevention means is on the expected wick moving side and / or posture changing side, and the wick moves and / or postures. The environmental test apparatus according to any one of claims 1 to 4, wherein the environmental test apparatus contacts the wick when changed and prevents movement and / or posture change of the wick.   6. The environmental test apparatus according to claim 1, wherein the wick detachment preventing means has a bent bar shape, and both ends are supported by inner walls of the test chamber.   The test chamber has a door member that opens and closes the test chamber, the test chamber has a back wall facing the door member, air blown by the blower is directed from the back wall side to the door member side, and the temperature detection sensor is in a rod shape The environmental test apparatus according to claim 1, wherein the environmental test apparatus is arranged in a posture from the back wall side toward the test chamber side.   There is a door member that opens and closes the test chamber, the test chamber has a back wall facing the door member, an air blow-out portion that blows air into the test chamber on the back wall side, and the air blow-out portion from the back wall side 8. A blow-out port forming portion that protrudes toward the test chamber side, and a part or all of the wet bulb temperature detecting means is located on a side surface side of the blow-out port forming portion. The environmental test apparatus described.

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