JP2009002858A - Temperature testing booth and method for creating environment in the temperature testing booth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for creating an environment capable of making environment temperatures to be parallel to a horizontal face and in a layer fashion, the environmental temperatures being in a temperature testing booth to be used for temperature testing of electronic devices, and maintaining the temperature in each layer to be at a desired constant level, and to provide the temperature testing booth to be used therefor. <P>SOLUTION: This temperature testing booth comprises a heat radiation fan, a blower fan having a heater, a temperature sensor, and a controller for controlling the temperature in the temperature test booth, according to information of the temperature in the temperature test booth detected by the temperature sensor. The controller controls the blowing direction and the blowing rate of each of the blower fan and the heat radiation fan, to form a plurality of regions in a layer fashion, in a direction perpendicular to the horizontal direction in the temperature test booth so that the temperature of each region is maintained at a constant level. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a temperature test booth for performing a temperature test on an electronic device or the like and an environment generation method in the temperature test booth.

  Currently, as a product test for electronic equipment, etc., a simple temperature test booth covered with vinyl or a room type dedicated temperature test booth (hereinafter, unless otherwise specified, a temperature test booth including both) A test object is placed inside the test object, and a test for the environmental temperature of the test object is performed as necessary.

  However, for example, in the example of the conventional temperature test booth shown in FIG. 3, the temperature test booth 30 is a transparent synthetic resin sheet on which an antistatic treatment is applied to a framework (not shown) made of an aluminum pipe. Are provided on the ceiling and the periphery, and a heat dissipation fan 31 is provided on the ceiling.

  The device under test 32 has a control unit 32-1 and a drive unit 32-2. The air in the temperature test booth 30 is taken in from the direction of intake air in the figure by a built-in fan (not shown) in which the device under test 32 is built. It is designed to discharge in the direction of exhaust. High temperature air stays in the vicinity of part A in the upper part of the temperature test booth, and a temperature difference is likely to occur between part A in the temperature test booth and part B in the lower part.

  So far, adjustments have been made by combining a heater for heating and a fan for diffusion so as to reduce the temperature difference in the temperature test booth and maintain a constant temperature.

  As a known example, Patent Document 1 has a description that keeps the inside of the thermostat at a desired temperature by circulating the temperature-controlled air in the thermostat.

  Further, Patent Document 2 has a description of controlling the air volume by circulating air through a filter and a rectifying plate in a thermostat equipped with a blower, a heater, and a cooler, and changing the rotation speed of the blower.

  Furthermore, Patent Document 3 discloses that in a thermostatic bath for a burn-in test, the upper and lower sides of a rack on which a test target substrate is placed are partitioned by a heat insulating material and separated into a plurality of rooms, and a gas inflow portion and an outflow portion are provided for each room A burn-in device for setting the ambient temperature for each room is described.

  In a high-temperature test of a large product among electronic devices and the like, for example, there is a case where a control unit is disposed below the electronic device and it is desired to apply an appropriate temperature stress only to the control unit. If you want only the control unit to have the desired ambient temperature so that the other units placed at the top do not have that much ambient temperature, or even if the temperature is higher than the electronic equipment, It may be necessary to set the temperature environment.

In response to such a request, it is difficult to cope with the methods described in Patent Document 1 and Patent Document 2 described in the above-mentioned patent documents, and the method described in Patent Document 3 is used for testing work such as a large electronic device. Was not suitable.
Japanese Utility Model Publication No. 05-44233 Japanese Patent Application Laid-Open No. 11-231943 JP 2005-257564 A

  In order to solve the above-described problems, the present invention provides an environment generation method in which the environment temperature in the temperature test booth is parallel and layered with respect to the horizontal plane, and is maintained at a desired constant temperature in each layer, and to this. The purpose is to provide a temperature test booth.

  The invention according to claim 1 of the present invention is detected by a heat dissipating fan, a blower fan provided with a heater for heating, a temperature sensor, and the temperature sensor in a temperature test booth used for a temperature test of an electronic device or the like. And a controller for controlling the temperature in the temperature test booth based on the temperature information in the temperature test booth, the controller adjusting the air volume of the blower fan and the heat dissipating fan to adjust the temperature. A test environment generation method characterized in that a plurality of regions maintained at a constant temperature in a test booth are generated in layers in a direction perpendicular to a horizontal plane.

  According to the first aspect of the present invention, the temperature test booth is made of, for example, a sheet made of a transparent synthetic resin subjected to an antistatic treatment on a frame made of an aluminum pipe at each ridge portion of a rectangular parallelepiped or a cube. The ceiling and surroundings are covered. A heat-dissipating fan that is preferably openable and closable on the ceiling of the temperature test booth, a plurality of fans with a heater for heating on the side wall or floor of the temperature test booth, a device under test as a test object, and a temperature test A temperature sensor is provided at an appropriate location inside the booth, and a controller that incorporates a CPU that controls the temperature in the temperature test booth based on the temperature information in the temperature test booth detected by the temperature sensor.

  Preferably, the controller adjusts the air volume of the blower fan and the heat dissipating fan installed in the temperature test booth so that the region maintained at a constant temperature in the temperature test booth is layered in a direction perpendicular to the horizontal plane. A plurality of layers in which two layers or three layers are kept at a constant temperature can be generated.

  For this reason, for example, for a rectangular parallelepiped device under test, the control unit is arranged in the lower part, the environmental temperature of the control unit is maintained at a desired temperature higher than room temperature, and other parts arranged in the upper part of the device under test are In order to keep the ambient temperature lower than this, the temperature in the temperature test booth in the vicinity of the four outer surfaces corresponding to the width region in the height direction of the control unit is made equal to the desired environmental temperature, and the inside of the control unit by the fan built in the control unit The temperature of the air to be taken in can be generated in the temperature test booth in the temperature test booth so that the temperature in each layer substantially parallel to the horizontal plane in the height direction has a desired temperature in order to make the temperature of the intake air the same temperature.

  According to the present invention, in the conventional temperature test booth, high temperature air stays at the upper part, and with time, a larger temperature difference occurs between the upper part and the lower part of the temperature test booth. The temperature test environment is to be generated by generating a plurality of layers in which each region is maintained at a constant temperature, such as two layers or three layers, preferably in layers in the direction perpendicular to the horizontal plane.

  The controller receives the temperature information of each part of the temperature test booth from the temperature sensor, the fan for heating provided with the heaters provided at various places, the temperature of the heater for heating and the air volume of the fan for blowing as necessary Adjusting and operating the heat dissipation fan so that the temperature inside the temperature test booth does not become too high.

  In order to generate an air layer having a desired temperature substantially parallel to the horizontal plane in the temperature test booth, for example, the wind direction is the same as the horizontal plane at the upper limit of the side wall of the temperature test booth corresponding to each layer, or slightly downward The air blowing fan equipped with a heater for heating, which is attached to the air heater, is operated, and the air blowing fan provided with a heater for heating is operated as a heating and diffusion fan in each layer, so that the temperature uniformity in each layer is achieved. obtain.

  Here, when a layer having a temperature lower than room temperature is generated in the temperature test booth, it is needless to say that the temperature test booth may further include a blower fan equipped with a known cooler.

  In the present invention, the temperature test booth generates a temperature environment in which each layer generated in a direction perpendicular to the horizontal plane is maintained at a desired temperature without providing a solid partition in the booth. A good temperature test environment can be generated.

  Here, the temperature test booth may be a movable type in which casters are attached to the lower part of the temperature test booth corresponding to a framework column made of an aluminum pipe, or may be a fixed type.

  Moreover, the synthetic resin sheet | seat similar to a ceiling or a side wall part may be laid by the floor part of the temperature test booth as needed.

  Moreover, in order to lower the temperature inside the temperature test booth, the temperature test booth may be provided with a known cooling air blowing fan with a refrigerator, for example.

  The invention according to claim 2 of the present invention is the test environment generation method according to claim 1, wherein the controller further adjusts a wind direction of the blower fan.

  According to the second aspect of the invention, since the controller adjusts the air direction together with the air volume of the blower fan provided with the heater for heating, the temperature of each layer can be adjusted more finely.

  The adjustment of the air direction of the blower fan provided with the heater for heating is performed by, for example, a known technique including a mechanism capable of freely operating the direction of the blower fan from the controller.

  The controller collects the temperature information of each part of the temperature test booth from the temperature sensor, and the fan for the air with the heater for heating provided in each place needs the temperature of the heater for heating, the air volume and the air direction of the fan for blowing. The heat radiating fan is operated so that the temperature inside the temperature test booth does not become too high while adjusting according to the conditions.

  Invention of Claim 3 of this invention is a temperature test booth used for temperature tests, such as an electronic device, Comprising: The said temperature test booth, The fan for ventilation provided with the heater for heating, The fan for thermal radiation, A temperature sensor and a controller for controlling the temperature in the temperature test booth based on the temperature information in the temperature test booth detected by the temperature sensor, in multiple layers in each direction perpendicular to the horizontal plane and for each layer A temperature test booth characterized by generating a temperature test environment having a substantially constant desired temperature.

  According to the third aspect of the present invention, the temperature test booth is made of a transparent synthetic resin sheet that has been subjected to antistatic treatment on a frame made of aluminum pipes, for example, each ridge portion of a rectangular parallelepiped or a cube. The ceiling and surroundings are covered. A heat-dissipating fan, preferably openable and closable, on the ceiling of the temperature test booth, a plurality of blower fans with heating heaters on the side wall or floor of the temperature test booth, in a suitable place inside the device under test or the temperature test booth A temperature sensor, and a controller that incorporates a CPU that controls the temperature in the temperature test booth based on the temperature information in the temperature test booth detected by the temperature sensor.

  Preferably, the controller adjusts the air volume of the blower fan and the heat dissipating fan installed in the temperature test booth so that the region maintained at a constant temperature in the temperature test booth is layered in a direction perpendicular to the horizontal plane. A plurality of layers in which two layers or three layers are kept at a constant temperature can be generated.

  For this reason, for example, for a rectangular parallelepiped device under test, the control unit is arranged in the lower part, the environmental temperature of the control unit is maintained at a desired temperature higher than room temperature, and other parts arranged in the upper part of the device under test are In order to keep the ambient temperature lower than this, the temperature in the temperature test booth in the vicinity of the four outer surfaces corresponding to the width region in the height direction of the control unit is made equal to the desired environmental temperature, and the inside of the control unit by the fan built in the control unit The temperature of the air to be taken in can be generated in the temperature test booth in the temperature test booth so that the temperature in each layer substantially parallel to the horizontal plane in the height direction has a desired temperature in order to make the temperature of the intake air the same temperature.

  According to the present invention, in the conventional temperature test booth, high temperature air stays at the upper part, and with time, a larger temperature difference occurs between the upper part and the lower part of the temperature test booth. This is a temperature test booth for generating a temperature test environment by generating a plurality of layers in which each region is maintained at a constant temperature, such as two layers or three layers, preferably in layers in a direction perpendicular to the horizontal plane. is there.

  The controller collects the temperature information of each part of the temperature test booth from the temperature sensor, and sends the fan for heating with the heater for heating provided in various places, the temperature of the heater for heating and the air volume of the fan for blowing as needed The heat dissipating fan is operated so that the temperature inside the temperature test booth does not become too high.

  In order to generate an air layer having a desired temperature substantially parallel to the horizontal plane in the temperature test booth, for example, the wind direction is the same as the horizontal plane at the upper limit of the side wall of the temperature test booth corresponding to each layer, or slightly downward The air blowing fan equipped with a heater for heating, which is attached to the air heater, is operated, and the air blowing fan provided with a heater for heating is operated as a heating and diffusion fan in each layer, so that the temperature uniformity in each layer is achieved. obtain.

  Here, when a layer having a temperature lower than room temperature is generated in the temperature test booth, it is needless to say that the temperature test booth may further include a blower fan equipped with a known cooler.

  In the present invention, a temperature environment in which each layer generated in a direction perpendicular to the horizontal plane is maintained at a desired temperature without providing a partition in the booth is generated in the temperature test booth, so that workability is good. It has a structure that generates a temperature test environment.

  Here, the temperature test booth may be a movable type in which casters are attached to the lower part of the temperature test booth corresponding to a framework column made of an aluminum pipe, or may be a fixed type.

  Moreover, the synthetic resin sheet | seat similar to a ceiling or a side wall part may be laid by the floor part of the temperature test booth as needed.

  Furthermore, in the case where a layer having a temperature lower than room temperature is generated in the temperature test booth, the temperature test booth may further include a blower fan provided with a known cooler.

  According to a fourth aspect of the present invention, the temperature test booth includes a partition plate substantially parallel to a horizontal plane, the partition plate surrounds a part of the test object, and the partition plate is a part of the partition plate. 4. The temperature test booth according to claim 3, further comprising an openable / closable vent hole penetrating the front and back surfaces.

  According to the invention described in claim 4, for example, it is a partition plate having a thickness of several centimeters which is made of polystyrene foam and has a good thermal insulation property, and the entire size is parallel to the horizontal plane. The outer shape placed in the center of the temperature test booth is divided so as to sandwich the device under test with a long rectangular parallelepiped, and a rectangular cutout is provided at a position corresponding to the device under test. ing. Further, apart from the rectangular cutout, the partition plate is provided with one or more openable and closable vent holes penetrating the front and back surfaces of the partition plate.

  In addition, each of the divided partition plates can be adjusted in height in the vertical direction with respect to the horizontal plane and is supported substantially in parallel with the horizontal plane. First, set one of the divided partitions to the back of the temperature test booth, place the device under test so that it abuts the notch in the partition plate, and place the temperature sensor and device under test at the appropriate location of the device under test. After attaching the instrument, measuring instrument, and sensor necessary for the temperature test, set the other side of the partition plate so that it matches one of the partition plates.

  Here, the partition plate may be divided into a plurality of partitions other than two, and the number of partition plates may be one or more. In the above example, one partition plate is set so as to sandwich the device under test so that the partition plate is positioned at the same position as the upper limit height of the control unit at the bottom.

  In the present invention, the air layer in the temperature test booth multi-layered with the partition plate as a boundary can be more effectively and reliably maintained at a desired temperature. Although there are points to be noted in handling and workability as compared with a structure in which no partition plate is provided, it is more effective in maintaining the air in the temperature test booth for the device under test at a desired temperature and layer width.

  The invention according to claim 5 of the present invention is the temperature test booth according to claim 4, wherein a part of the partition plate is detachable from at least one surface around the device under test. .

  According to the invention described in claim 5, even when a part of the partition plate is detachable on at least one surface around the device under test, it is necessary to work on the device under test during the temperature test. Yes.

  In conventional temperature test booths, hot air stays at the top, and with time, a larger temperature difference tends to occur between the top and bottom of the temperature test booth. Although the temperature of the entire test booth is kept constant, in the present invention, the environmental temperature in the temperature test booth is parallel to the horizontal plane and layered, and is maintained at a desired constant temperature in each layer. Create an environment.

  FIG. 1 shows a first embodiment according to the present invention. The external shape of the temperature test booth 100 is a rectangular parallelepiped or a cube, and each ridge line portion is a frame made of an aluminum pipe (not shown), a ceiling made of a transparent synthetic resin sheet subjected to an antistatic treatment, and a ceiling. The surrounding area is covered. A plurality of blower fans 101 (hereinafter simply referred to as blower fans 101) provided with heaters are arranged on the side wall or floor of the temperature test booth 100, and a heat dissipation fan that is preferably openable and closable on the ceiling. 102, a temperature sensor 103 which is known in a suitable place inside the device under test 107 or the temperature test booth 100, and temperature control in the temperature test booth 100 is controlled based on temperature information of each part in the temperature test booth 100 detected by the temperature sensor 103. And a controller 104 having a built-in CPU.

  The controller 104 adjusts the air volume and direction of the blower fan 101 installed in the temperature test booth and the air flow of the heat dissipating fan 102 so that the region maintained at a constant temperature in the temperature test booth 100 is set to a horizontal plane. It is possible to generate a temperature environment in which the layers A and B of the two layers are maintained at a desired constant temperature in layers in the vertical direction.

  For example, a case where a high-temperature test is performed in the temperature test booth 100 for the device under test 107 having a rectangular parallelepiped outer shape will be described. The control unit 107-1 is arranged at the lower part, the environmental temperature of the control unit 107-1 is maintained at a desired temperature higher than room temperature, and the drive unit 107-2 arranged at the upper part of the device under test is set to an environmental temperature lower than this. The temperature test booth temperatures in the vicinity of the four outer surfaces corresponding to the width region in the height direction of the control unit 107-1 are made equal to the desired environmental temperature, and the control unit 107-1 is not shown so as to maintain In order to make the temperature of the air taken into the control unit 107-1 by the fan the same temperature, A part and B part of two different air layers that are substantially parallel to the horizontal plane in the height direction are generated. The temperature test booth 100 generates an environment in which the temperature of each of these maintains a desired temperature.

  In the conventional temperature test booth, high-temperature air stays at the upper part, and with time, a larger temperature difference has occurred between the upper and lower parts of the temperature test booth. However, in the present invention, the temperature test booth 100 is constant. Part A and part B of two different air layers maintained at a temperature are generated, and two layers are formed in layers in a direction perpendicular to the horizontal plane. In this way, a temperature test environment is generated in which a plurality of air layers in which two or more layers are kept at a constant temperature are generated.

  The controller 104 receives the temperature information of each part of the temperature test booth 100 sent from the temperature sensor 103, adjusts the temperature of the heater for the fan 101 for blowing provided at each place and the blowing amount as necessary, and The heat dissipating fan 102 with an opening / closing port is operated so that the temperature inside the temperature test booth 100 does not become too high.

  The air section A 105 and the section B 106 are controlled by the controller 104 with the air direction and the air volume of the blower fan 101 disposed at the upper or lower position of each air layer. Air circulation A108 and air circulation B109 are formed respectively at the boundary.

  Thus, in order to generate an air layer having a desired temperature substantially parallel to the horizontal plane in the temperature test booth 100, for example, the wind direction is set to the horizontal plane at the upper limit position of the side wall portion of the temperature test booth 100 corresponding to each layer. The fan 101, which is the same or slightly facing downward, is operated, and the fan 101 is operated as a heating and diffusion fan in each air layer, so that the temperature in each layer is uniform. ing. Through the boundary 110 between the A part and the B part, there is a slight air movement upward in the figure as shown by the arrow.

  Here, in the case where a layer having a temperature lower than room temperature is generated in the temperature test booth 100, the temperature test 100 booth may further include a blower fan equipped with a known cooler (not shown). Of course.

  In addition, if necessary, an air blowing fan 101 may be further provided on the outer surface of the device under test 107 so as to maintain a better temperature.

  According to the present invention, a temperature environment in which each layer generated in a direction perpendicular to the horizontal plane is maintained at a desired temperature is generated in the temperature test booth 100 without providing a solid partition in the booth. A good temperature test environment can be generated.

  In this manner, a plurality of layers in which the region maintained at a constant temperature is formed in layers in the direction perpendicular to the horizontal plane, preferably two or more layers, and each layer is maintained at a constant temperature are generated in the temperature test booth 100. Be able to.

  Here, the temperature test booth 100 may be a movable type in which casters are attached to the lower part of a framework column made of an aluminum pipe, or may be a fixed type.

  Further, the floor 111 of the temperature test booth 100 may be laid with a synthetic resin sheet similar to that of the ceiling or the side wall as necessary.

  Further, the temperature test booth 100 may be provided with a known cooling air blowing fan with a refrigerator, for example, in order to lower the internal temperature.

  FIG. 2 shows a second embodiment according to the invention. a) Front view and b) Perspective overview. The external shape of the temperature test booth 200 is a rectangular parallelepiped or a cube, and each ridge line portion is a frame made of an aluminum pipe (not shown) and a ceiling made of a transparent synthetic resin sheet subjected to antistatic treatment. The surrounding area is covered. A plurality of blower fans 201 (hereinafter simply referred to as blower fans 201) provided with heaters are arranged on the side wall or floor of the temperature test booth 200, and a heat radiation fan that is preferably openable and closable on the ceiling. 202, a temperature sensor 203 which is known in a suitable place inside the device under test 207 and the temperature test booth 200, and temperature control in the temperature test booth 200 is performed based on temperature information of each part in the temperature test booth 100 detected by the temperature sensor 203. And a controller 204 having a built-in CPU.

  At almost the center of the temperature test booth 200, a rectangular parallelepiped device 210 having a long outer shape is installed.

  Then, for example, a severable partition plate 207 having a thickness of several centimeters, which is made of polystyrene foam and has a good thermal insulation property, is accommodated in the temperature test booth 200 in parallel to the horizontal plane, and the control of the device under test 210 is performed. It is fixed and installed at a height at which the boundary between the part 210-1 and the drive part 210-2 is located by a metal fitting not shown.

  The partition plate 207 is divided so as to sandwich the device under test 210, and a rectangular notch is provided at a position sandwiching the device under test 210. Further, apart from the rectangular cutout, the partition plate 207 is provided with one or more freely openable / closable vent holes 207-1 that penetrate the front and back surfaces.

  The partition plate 207 can be divided into a partition plate 207-2 and a partition plate 207-3, and the height in the horizontal direction and the vertical direction can be adjusted, and the partition plate 207 is supported substantially parallel to the horizontal plane. Therefore, for example, one of the partition plates adjusted to a desired height and divided into two parts, A207-2 is first set deep inside the temperature test booth 200, and the device under test 210 is used as a notch in the partition plate A. After installing the device under test 200 with the temperature sensor and the instrument, measuring instrument, sensor, etc. necessary for the temperature test, the other partition plate B207-3 is aligned with the partition plate A207-2. To install.

  Here, the partition plate 207 may be divided into a plurality of divisions other than two, and the number of the partition plates 207 may be as many as necessary.

  In the present invention, the two layers of the air in the temperature test booth 200 with the partition plate 207 as a boundary can be more effectively and reliably maintained at a desired temperature. Compared to the structure without the partition plate 207, it is necessary to pay attention to handling and workability, but it is more effective to accurately maintain the air in the temperature test booth 200 for the device under test 210 at a desired temperature and layer width. Is.

  The controller 204 adjusts the air volume and direction of the blower fan 201 mounted in the temperature test 200 booth, and the air volume of the heat dissipation fan 202 to adjust the area maintained at a constant temperature in the temperature test booth 200 to a horizontal plane. It is possible to generate a temperature environment in which the two layers of the A portion 205 and the B portion 206 are maintained at a desired constant temperature in a layered manner in a direction perpendicular to each other.

  For example, a case where a high-temperature test is performed on the device under test 210 having a rectangular parallelepiped outer shape in the temperature test booth 200 will be described. The control unit 210-1 is arranged at the lower part, the environmental temperature of the control unit 210-1 is kept at a desired temperature higher than room temperature, and the drive unit 210-2 arranged at the upper part of the device under test 210 is kept at a lower environmental temperature. The temperature in the temperature test booth 200 in the vicinity of the four outer surfaces corresponding to the width region in the height direction of the control unit 210-1 is made equal to a desired set temperature, and the control unit 210-1 has a built-in Two different air layers A 205 and B 206 that are substantially parallel to the horizontal plane in the height direction are generated so that the temperature of the air taken into the control unit 200-1 by the fan not shown is also similar. Then, an air circulation A and an air circulation B are generated, and an environment in which the temperature in each air layer maintains a desired temperature is generated in the temperature test booth 200.

  The controller 204 receives the temperature information of each part of the temperature test booth 200 sent from the temperature sensor 203, adjusts the temperature of the heater for the fan 201 and the amount of air supplied at various places as necessary, and The heat dissipating fan 202 with an opening / closing port is operated so that the temperature inside the temperature test booth 200 does not become too high.

  In the air layer A part 205 and B part 206, the air direction and the air volume of the blower fan 201 disposed at the upper or lower position of each air layer are controlled by the controller 204, and the A part 205 and the B part 206 part. An air circulation A 208 and an air circulation B 209 are formed with the partition plate 207 positioned at the boundary between the air circulation A 208 and the air circulation B 209, respectively.

  Further, the partition plate 207 is provided with one or more vent holes 207-1 so that the temperature of the B portion 206 does not become too high. Similarly, the heat dissipation fan 202 is controlled by the controller 204 so that the temperature of the A portion 205 does not become too high.

  Thus, in order to generate an air layer having a desired temperature substantially parallel to the horizontal plane in the temperature test booth 200, for example, the wind direction is set at the upper limit position of the side wall of the temperature test booth 200 corresponding to each layer. The fan 201, which is the same or slightly facing downward, is operated, and the fan 201 is operated as a heating and diffusion fan in each air layer so as to achieve a uniform temperature in each layer. ing.

  Here, in the case where a layer having a temperature lower than room temperature is generated in the temperature test booth 200, the temperature test 200 booth may further include a blower fan equipped with a known cooler (not shown). Absent.

  FIG. 4 shows another embodiment according to the present invention, in which a) generates a two-layer temperature region in the temperature test booth 40, and b) generates a three-layer temperature region in the temperature test booth 40. The case is shown in comparison. In either case, the temperature test booth 40 has a rectangular parallelepiped appearance with a transparent synthetic resin sheet with antistatic treatment provided on a frame (not shown) made of aluminum pipes on the ceiling and the periphery. It is the type of having.

In a), the temperature test booth 40 includes a blower fan 41 and a heat dissipation fan 42,
A plurality of temperature sensors 45 are arranged in the temperature test booth 40 in order to create a region A42 and a region B43 having different temperatures from the boundary region C at a desired height, and air circulation at a temperature T1 is circulated in the region A42. In the region B43, air circulation at the temperature T2 is generated. Here, based on the temperature in each part detected by the temperature sensor 45, the temperature of the heater for the fan 41 and the amount of air are adjusted as needed by a controller (not shown) with a built-in CPU. In addition, the heat dissipating fan 42 with an opening / closing port is operated so that the temperature inside the temperature test booth 40 does not become too high.

  In the air layer regions A42 and B43, the air direction and the air volume of the blower fan 41 arranged at the upper or lower position of each air layer are controlled by the controller, and the boundary region C between the region A and the region B is defined. Air circulations at temperatures T1 and T2 are formed as boundaries.

b), the temperature test booth 40 includes a blower fan 41 and a heat dissipation fan 42;
A plurality of temperature sensors 45 are arranged in the temperature test booth 40 in order to create three regions having different temperatures from the boundary region D46 and the boundary region D47 at the desired height, and the first region has a temperature T3. The air circulation of temperature T4 is generated in the second region, and the air circulation of temperature T5 is generated in the third region. Here, based on the temperature in each part detected by the temperature sensor 45, the temperature of the heating heater of the fan 41 and the amount of air are adjusted as necessary by a controller (not shown) with a built-in CPU. In addition, the heat dissipating fan 42 with an opening / closing port is operated so that the temperature inside the temperature test booth 40 does not become too high. In the three areas, the air direction and the air volume of the blower fan 41 located at the upper part of each area are controlled by the controller.

First embodiment according to the present invention Second embodiment according to the present invention Conventional example Other embodiments according to the invention

Explanation of symbols

30, 40, 100, 200 Temperature test booth 31, 102, 202 Heat radiation fan 32, 107, 210 Device under test 41, 101, 201 Blower fan 42 Region A
43 Area B
44 Boundary region 45, 103, 203 Temperature sensor 46 Boundary region D
47 Boundary region E
104, 204 Controller 105, 205 Part A 106, 206 Part B 108, 208 Air circulation A
109, 209 Air circulation B
110 Boundary between Part A and Part B 207 Partition plate 211 Floor

Claims (5)

In the temperature test booth used for temperature testing of electronic devices, etc.
A fan for radiating heat, a fan for blowing with a heater for heating, a temperature sensor, and a controller for controlling the temperature in the temperature test booth based on temperature information in the temperature test booth detected by the temperature sensor,
The controller adjusts the air volume of the blower fan and the heat dissipating fan,
A test environment generation method characterized in that a plurality of regions maintained at a constant temperature in the temperature test booth are generated in layers in a direction perpendicular to a horizontal plane.   The test environment generation method according to claim 1, wherein the controller further adjusts a wind direction of the blower fan. A temperature test booth used for temperature testing of electronic equipment, etc.
The temperature test booth is
A blower fan equipped with a heater for heating;
A heat dissipation fan;
A temperature sensor;
A controller for controlling the temperature in the temperature test booth based on the temperature information in the temperature test booth detected by the temperature sensor;
A temperature test booth characterized by generating a temperature test environment having a plurality of layers in a direction perpendicular to a horizontal plane and a substantially constant desired temperature for each layer. A partition plate substantially parallel to a horizontal plane in the temperature test booth;
The partition plate surrounds a part of the test object,
The temperature test booth according to claim 3, wherein the partition plate has an openable and closable vent hole penetrating the front and back surfaces of the partition plate. 5. The temperature test booth according to claim 4, wherein a part of the partition plate is detachable from at least one surface around the device under test.

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