KR101665359B1 - Environment test device - Google Patents

Abstract

[PROBLEMS] environmental testing apparatus which can present invention is to suppress the distribution non-uniformity in the rotation direction of the rotary pin of the non-uniform distribution of the temperature and the humidity of the discharged air from the blower, in particular a blower, and achieve an improvement in the environmental test accuracy And to provide the above-mentioned objects.
[MEANS FOR SOLVING PROBLEMS] environment test apparatus 1 and are separated by the Laboratory (6) and the air conditioning passage (7) by a constant temperature and humidity Joe cell wall 4, via the upper and lower openings (9, 19), test room ( 6 and the air conditioning passageway 7 so as to control the inside of the test chamber 6 to a desired environment. The air conditioning passageways 7 are arranged in series in the order of the humidifier 14, the evaporator 15, the heater 26 and the blower 27 from the upstream side and are connected to the heater 26 and the blower 27 And a resistance plate 11 is formed on the downstream side of the blower 27. The air inlet guide 8 is provided on the downstream side of the blower 27, The air introducing guide 8 guides the air in the vicinity of the downstream of the heater 26 to the blower 27 and the resistance plate 11 can make the deflection of the discharge flow rate of the blower 27 substantially equal.

Description

{ENVIRONMENT TEST DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an environmental test apparatus having a function of adjusting the temperature environment of a closed space, and more particularly to an environmental test apparatus having an air blower for stirring air in a closed space.

An apparatus for testing the performance and durability of a product or material is an environmental test apparatus. This type of environmental testing apparatus has a test space in which the sample body of the test object is placed, and adjusts the temperature and humidity in the test space to a desired test environment. That is, this type of environmental testing apparatus is provided with a heater for heating the air, a cooler for cooling the air (for example, an evaporator forming part of the refrigeration cycle) At least an air blower for stirring air in the space is mounted.

Patent Document 1 discloses a test space in which a specimen is placed on a partition wall in one constant temperature and constant humidity chamber and an air space in which the above devices (heater, cooler, blower, etc.) An environmental test apparatus is disclosed which is divided into an adjustment space. This environmental test apparatus activates the blower in a state in which the heater or the cooler is driven, circulates air between the air adjustment space and the test space to adjust the temperature and humidity in the test space to a desired environment, So as to be almost uniform.

Japanese Laid-Open Patent Publication No. 2011-163585

However, in an environmental testing apparatus such as Patent Document 1, it is difficult to form a desired test environment with stability and high accuracy, and reliability of test results may be impaired. The reason will be described in detail below.

The environmental test apparatus of Patent Document 1 has a basic configuration in which the cooler, the heater, and the blower are arranged in this order from the upstream side of the air flow direction in the air adjustment space. That is, in the air conditioning space, the circulating air passes through the cooler and the heater in this order, and is sent out into the test space via the blower.

More specifically, in this kind of environmental testing apparatus, a cooler or a heater is selectively used in the air adjusting space in accordance with the target temperature and the target humidity in the test space. That is, when the sample in the test space is exposed to a high temperature, a heater is mainly used. Specifically, in the high temperature test operation, the heater is adjusted to a predetermined output (proportional control or on / off control), air circulation is formed between the test space and the air adjustment space by the blower, Is maintained at the target temperature. On the other hand, when the sample in the test space is exposed to a low temperature, both the cooler and the heater are used. Specifically, in the low-temperature test operation, the heater is adjusted to a predetermined output (proportional control or on-off control) while the cooler is intermittently operated, and the air is circulated between the test space and the air adjustment space by the blower And controls the atmosphere temperature of the test space to be maintained at the target temperature.

However, actually, in any operation, as shown in Fig. 17, air is blown from any direction at an angle of 360 degrees with respect to the inflow portion (hereinafter referred to as the air intake port 102) into which the air flows into the blower 100 Can be introduced. Thereby, the air introduced into the blower 100 from the intake port 102 may cause a large distribution unevenness in temperature and humidity. This is because the suction force in one direction is lowered due to the broadening of the intake range in the blower, and the stay region 110 in which air is lodged in the vicinity of the intake port 102 is formed. 17, the retention area 110 is slightly spaced apart from the intake port 102 and is located near the corner on the upper side of the air adjustment space with respect to the intake port 102 . That is, the retention area 110 generated in the air adjustment space is mainly a portion along the wall surface forming the outer periphery of the apparatus. In addition, the ambient air temperature is affected by the outside air temperature in the vicinity of the wall surface in the air adjusting space. That is, in the conventional environmental test apparatus, the retention area 110 is formed within a range in which influence of such disturbance is present. Therefore, even though the test is being performed, air different from the temperature and humidity adjusted by the cooler, . Further, air in the non-temperature-controlled holding region 110 is sucked into the blower 100, causing large distribution irregularities in temperature and humidity.

Another reason for generating a large distribution irregularity in temperature or humidity of the air sucked by the blower is as follows. For example, the air introduced into the blower 100 is mixed with air (simply referred to as low-temperature air) that has passed through only the cooler, air that has passed through the cooler and heater 101 (Simply called high temperature air) that has just passed through it and mixed with it.

Due to such a cause, the air introduced into the blower 100 from the air inlet 102 does not have a uniform distribution of temperature and humidity, and large distribution irregularities occur in temperature and humidity. Also, as follows, the discharged air from the blower 100 is also in a state where large distribution unevenness occurs in temperature and humidity. That is, the discharge air of the blower 100 has a distribution of temperature and humidity distribution on the cross section in the direction crossing the discharge direction. By this air having uneven distribution, the test space is adjusted to the desired environment.

As described above, in the environmental test apparatus of the prior art, air having various temperatures and humidity is introduced into the blower through the intake port, and the test environment is formed using the air. This makes it difficult to adjust the temperature and humidity in the test space, and it is difficult to maintain the test environment in a stable state. As a result, in an unstable environment, the environmental test was made unreasonably and the test precision was lowered. That is, uneven distribution of the discharged air in the blower has become one of the causes of lowering the test accuracy. Particularly, in a constant temperature apparatus or a constant temperature / humidity apparatus (environmental test apparatus) suitable for a test in which a high temperature state or a low temperature state is maintained over a long term, the influence on the test result is increased, .

Therefore, in view of the problems of the prior art, the present invention can suppress the uneven distribution of the temperature and the humidity of the discharged air from the blower, particularly the distribution irregularity in the rotating direction of the rotating pin of the blower, The present invention also provides an environment test apparatus capable of providing a test environment.

According to an aspect of the present invention, there is provided an air conditioning apparatus including an air conditioning space and a test space in which a sample body is disposed, wherein the air conditioning space has a blower and a heat source having at least one of a heating function and a cooling function, An environmental test apparatus for circulating air between a space and a test space to form a desired environment in the test space, wherein the heat source and the blower are arranged in this order from the upstream side toward the downstream side in the air flow direction, An air introduction guide is formed between the heat source and the blower so as to guide the air, whose temperature is adjusted mainly by the heat source, to the blower, between the heat source and the blower, so that the direction of the air sucked by the blower crosses the passing direction of the air passing through the heat source. And an environmental test apparatus.

Here, the " heat source " includes a heat source such as a cold source.

In the environmental test apparatus described in claim 1, an air introduction guide is formed between a blower and a heat source, and the air having passed through the heat source is guided to the blower. Thus, even when a certain test is performed in the environmental test apparatus, air in a substantially constant state after the adjustment of temperature and humidity mainly in the vicinity of the downstream side of the heat source flows into the blower of the environmental test apparatus, Can be made almost uniform. Further, even in the case where the staying region is formed above the intake portion of the blower in the air adjusting space as described above, in the present invention, the air introducing guide can restrict the air in the region from being sucked by the blower . This makes it possible to more reliably prevent occurrence of uneven distribution of the temperature and humidity of the air flowing into the blower. In other words, in the present invention, since the distribution of temperature and humidity distribution of the discharged air in the blower can be made substantially uniform, adjustment of the test environment in the test space is facilitated. As a result, it becomes possible to maintain the test environment in a stable state for a long period of time. Thus, even when the environmental test apparatus of the present invention is employed in a constant temperature apparatus or a constant temperature / humidity apparatus that maintains a high temperature state or a low temperature state over a long period of time, high test accuracy can be ensured, There is no danger to abandon.

It is also preferable that the apparatus further comprises a first heat source having a heating function and a second heat source having a cooling function. It is preferable that a first heat source is formed on the downstream side of the second heat source.

In the high temperature test operation, this type of environmental testing apparatus adjusts the heater to a predetermined output (proportional control or on / off control), and the circulating air To control the atmosphere temperature of the test space to be maintained at the target temperature. On the other hand, in the low-temperature test operation, the heater is adjusted to a predetermined output (proportional control or on-off control) while intermittently operating the cooler, circulating air is formed between the test space and the air adjustment space by the blower, So that the ambient temperature of the test space is maintained at the target temperature.

That is, in this type of environmental testing apparatus, the heater is driven in either the high temperature test operation or the low temperature test operation.

According to the environmental test apparatus described above, the air having passed through the first heat source such as a heater is guided to the blower. Thereby, the temperature and humidity control already completed in the vicinity of the downstream side of the first heat source, and the air having a substantially constant temperature and humidity is introduced into the blower. As a result, it is possible to make the distribution of the temperature and humidity distribution of the inflow air almost uniform.

Further, in the present invention, since the blower is provided so as to cross the passing direction of the air passing through the heat source, the direction of the air sucked by the blower is set so as to intersect with the passing direction of the air, There is no case to cause it.

This reason will be briefly explained.

In the environmental test apparatus, a motor is used as a drive source of the blower. In general, a motor may be exposed to a high temperature or a sudden change in temperature, thereby indicating a failure. As a result, in the environmental test apparatus, it is avoided to place the motor in the test space or in the air adjustment space. Therefore, a centrifugal type blower is often used in an environmental test apparatus rather than an axial flow type. The centrifugal type blower has a structure in which air is drawn in from the axial direction and is discharged in the rotating direction. That is, the centrifugal blower has a structure in which the suction direction and the discharge direction of air cross each other. The motor for driving the blower is generally provided in the axial direction. In view of such circumstances, conventionally, the blower is disposed outside the air adjustment space, and the direction in which the air sucked by the blower crosses the direction of the air passing through the heat source. In addition, when installed in this posture, it is possible to prevent the occurrence of motor failure due to heat, and in addition, the environmental test apparatus is not increased in size more than necessary.

Therefore, in the present invention, since the air introduction guide is formed while the installation posture of the blower is the same as that of the conventional installation posture, a new operation effect can be expected while keeping the environmental test apparatus at almost the same size as the conventional environmental test apparatus .

It is recommended that the air introduction guide has an inlet opening on the upstream side with respect to the direction of air flow and the inlet opening is formed to open toward the heat source.

According to such a configuration, since the inflow opening of the air introduction guide is arranged so as to open toward the heat source, the blower can introduce the air after passing the heat source more effectively. In other words, since the inflow opening of the air introduction guide is located on the extension line of the air inflow portion (intake portion) through the blower, the inflow opening can be regarded as the suction portion of the blower, . ≪ / RTI >

And the inflow opening is disposed so as to be located in the projection plane projected toward the inflow opening.

With this configuration, since the inflow opening of the air introducing guide is disposed so as to be located in the projection plane projected toward the inflow opening, the air blower can introduce air after passing the heat source more effectively.

Wherein the blower has an intake port and air is drawn in from the intake port, the air introduction guide includes a surrounding wall surrounding a portion of the periphery of the intake port other than the direction in which the heat source is present, And the inlet opening.

According to this configuration, the air introducing guide for guiding the air to the inlet port is formed by the surrounding wall surrounding the portion other than the direction in which the heat source is present in the vicinity of the inlet port of the blower, and air is guided through the inlet opening . As a result, air having passed through the inflow opening can be reliably introduced into the blower. In other words, according to the present invention, air can be prevented from flowing into the weft wall from a portion other than the inflow opening, so that it is possible to more reliably suppress uneven distribution of the temperature and humidity of the air introduced into the blower.

In the air conditioning space, the heat source may have an area occupied in a direction orthogonal to the air flow direction, which is smaller than an area occupied by the air adjustment space in a direction orthogonal to the air flow direction.

Generally, in the environmental test apparatus, the size (outer shape) of the heater is smaller than the size (outer shape) of the cooler. Further, a general fluid tries to follow a path having a small resistance depending on the relationship of the flow path resistance. Therefore, the air that has passed through the cooler flows by avoiding the heater, and becomes one of the causes of occurrence of uneven distribution of temperature and humidity of the air in the blower.

With the configuration of the present invention, air near the downstream side of the heat source can be introduced into the blower by the air introduction guide, even if it is configured to flow into the blower along the path avoiding the heat source. That is, the air in the vicinity of the downstream side of the heat source can be sucked into the blower without changing the design of the apparatus, air conditioning space, and the like in the existing environmental testing apparatus. According to this, there is no fear that the manufacturing cost is greatly increased.

Wherein the heat source has a first heat source and a second heat source and is arranged in the air conditioning space in the order of the second heat source, the first heat source, and the blower from the upstream side in the air flow direction, Is smaller than an area occupied by the second heat source in a direction orthogonal to the flow direction of the air.

According to this configuration, even if the air that has passed through the second heat source can flow into the blower along the path avoiding the first heat source, air near the downstream side of the second heat source is introduced into the blower by the air introduction guide .

In the environmental test apparatus of the present invention, it is preferable that the first heat source is a heater and the second heat source is a cooler.

As a more specific configuration, an air adjusting space and a test space in which a sample body is disposed,

An air introducing opening communicating with the air adjusting space and the test space, and an air discharging opening,

Wherein the air conditioning space is formed with a blower having an air inlet and an air outlet, a first heat source having a heating function, and a second heat source having a cooling function,

An environment test apparatus for circulating air between an air conditioning space and a test space to form a desired environment in a test space,

A closed wall is formed on the downstream side of the air adjusting space in the air flow direction,

A second heat source, a first heat source, and an air intake port of a blower are formed in sequence between the air introduction opening and the obstruction wall, the air intake port of the blower opening in a direction crossing the air flow direction, Is drawn through the second heat source, the first heat source, the air suction port by the blower, and discharged to the air discharge opening side,

And an air introduction guide for shielding the flow of air from the space formed between the intake port and the obstruction wall toward the intake port is formed.

The air introduction guide may include a weft wall surrounding the portion of the periphery of the inlet port other than the direction of the first heat source and an inflow opening for guiding air into the weft wall, In addition,

Wherein the first heat source has an area occupied in a direction orthogonal to the flow direction of the air is smaller than an area occupied by the second heat source in a direction orthogonal to the flow direction of the air,

And the inflow opening is disposed so as to be located in a projection plane projecting the first heat source toward the inflow opening.

It is preferable that the blower has a discharge port for discharging air and a resistor which becomes the flow resistance of air is formed in the vicinity of the discharge port.

According to the above configuration, the flow of the air discharged from the discharge port by the resistor can be restricted, and the deviation of the discharge flow rate that can be generated by the rotation pin of the blower can be adjusted. As a result, the flow rate of the air discharged from the blower and directed to the inside of the test space can be almost uniformly dispersed, so that it is possible to efficiently reach the desired test environment in the test space without any time difference. As a result, the test accuracy can be improved.

It is preferable that the blower is a multi-blade type fan, and the resistor is formed so as to block the discharge direction of the air from the discharge port.

According to this configuration, since the resistor is formed on the rotating direction side of the blower, the flow rate of the air discharged from the blower can be dispersed. This makes it possible to more evenly distribute the air discharged from the blower.

It is preferable that a guide member for guiding air to the first heat source is formed between the first heat source and the second heat source.

It is preferable that the air introduction guide has a shape that widens toward the heat source.

It is preferable that the length l of the inlet opening in the direction orthogonal to the air flow direction is not less than 1/2 and not more than 2/2 of the length L in the direction perpendicular to the air flow direction of the first heat source.

Preferably, the resistor is a standing plate, and the plate is directed toward the discharge port.

In the environmental test apparatus of the present invention, an air introduction guide is formed between the blower and the heater, and the air having passed through the heater can be guided to the blower by the air introduction guide. As a result, it is possible to suppress uneven distribution of the temperature and humidity of the air discharged from the blower. As a result, the test environment in the test space can be maintained stably and with high accuracy, so that highly reliable test results can be obtained.

1 is a conceptual diagram showing an environment testing apparatus according to an embodiment of the present invention.
Fig. 2 is a perspective view showing the substance of a recess in the interior of the environmental test apparatus of Fig. 1;
3 is a perspective view showing the introduction flow path forming member.
4 is a front view showing the introduction flow path forming member.
5 is an explanatory diagram showing the positional relationship between the blower, its peripheral equipment and its members in the environmental test apparatus.
6 is a conceptual diagram showing the flow of air inside the environmental test apparatus.
7 is a conceptual diagram paying attention to the flow of air upstream and downstream of the blower.
8 is a conceptual diagram paying attention to the flow of air on the downstream side of the blower.
Fig. 9 is a perspective view showing a modified example of the introduction flow path forming member. (Curved shape)
10 is a perspective view showing a modified example of the introduction flow path forming member. (Triangular shape)
11 is a perspective view showing another modification of the introduction flow passage forming member. (Inflow opening extension)
12 is a perspective view showing still another modification of the introduction flow path forming member.
13 is a perspective view showing a modified example of the resistance plate (inclined surface)
14 is an explanatory view showing a modified example of the resistance plate. (Hanging)
15 is an explanatory view showing a modified example of the resistance plate (curved line)
16 is an explanatory diagram showing a modified example of the resistance plate. (Slit image)
17 is a conceptual diagram paying attention to the flow of air upstream and downstream of the blower in the conventional environmental test apparatus. (Shaded portion: Staying region)

Hereinafter, an environmental test apparatus 1 according to an embodiment of the present invention will be described.

First, the basic configuration of the environmental test apparatus 1 of the present embodiment will be described.

The environmental test apparatus 1 shown in Fig. 1 is a so-called constant temperature and humidity apparatus having a housing 2 whose periphery is covered with a heat insulating material 3. As shown in Fig. That is, the housing 2 constitutes a constant temperature and humidity bath 5, and the inside thereof is partitioned into a test chamber (test space) 6 and an air conditioning passage (air conditioning space) 7 by a partition wall 4 have. Openings 9 and 19 for communicating the test chamber 6 and the air conditioning passageway 7 are formed on the upper side and the lower side of the constant temperature and humidity bath 5.

The opening 9 on the lower side is an air introduction opening. The opening 19 on the upper side is an air vent opening.

The air introducing opening 9 and the air discharging opening 19 are both long rectangular openings in the horizontal direction when viewed from the front side.

The test room 6 is a space for arranging equipment, parts, and the like to be a sample when performing environmental testing. The test room (6) is provided with indoor temperature detection means (23) for detecting the temperature of the space and indoor humidity detection means (24) for detecting the relative humidity of the space. The room temperature detecting means 23 is, for example, a conventionally known temperature sensor such as a thermocouple or a thermistor. On the other hand, the indoor humidity detection means 24 is, for example, a conventionally known humidity sensor.

The air conditioning passageway (7) is a portion that generates air of a desired temperature or humidity. A humidifier 14, an evaporator (second heat source) 15, a heating heater (first heat source) 26, a blower (air conditioner) 27 are disposed.

The humidifier 14 has an evaporation dish 30 and a conventionally known electric heater 31 to evaporate the hot water stored in the evaporation dish 30 by the electric heater 31.

The evaporator (cooler) 15 is part of the known cooling device 10 and functions to take charge of a part of the refrigeration cycle. That is, the evaporator 15 is capable of changing the cooling ability and the surface temperature by allowing the phase-change refrigerant to flow therein.

The heating heater 26 is a conventionally known electric heater and heats the air passing through the air conditioning passageway 7.

The blower 27 is a conventionally known centrifugal blower and has a rotary pin 28 and an outer member 33 in which the rotary pin 28 and the rotary pin 28 are installed, will be. That is, the blower 27 has the air inlet 35 and the air outlet 36 in the outer member 33. [ The intake port 35 is formed as a peripheral member 33 on a side orthogonal to the rotation axis of the rotation pin 28. [ The discharge port 36 is formed on the surface along the rotation direction of the rotation pin 28.

In the air conditioning passageway 7, a blocking wall 16 is formed on the upper side (the downstream side in the air flow direction) of the blower 27. The closure wall 16 is an air circulation restricting member having an opening 17 penetrating in the thickness direction of the member formed at a predetermined position and permitting passage of air only from the opening 17. [ That is, the closed wall 16 can send the air discharged from the blower 27 to the test chamber 6 side by making the discharge port 36 of the blower 27 communicate with the opening 17. [ In the present embodiment, the opening 17 of the closed wall 16 has an almost rectangular shape, and the opening size of the opening 17 is substantially the same as the opening size of the discharge port 36 of the blower 27 to be.

Since the air conditioning passageway 7 employed in the present embodiment has the blocking wall 16 formed at the distal end portion thereof, the downstream side in the air flow direction has a membrane structure, .

Subsequently, the characteristic configuration of the environmental test apparatus 1 of the present embodiment will be described.

The environmental test apparatus 1 of the present embodiment is arranged such that air is supplied to the air intake port 35 upstream of the air intake port 35 of the air blower 27 in order to suppress uneven distribution of the temperature and humidity of the air discharged from the air blower 27 An introduction guide 8 is formed. The resistance plate 11 is provided on the downstream side in the air flow direction with respect to the discharge port 36 of the blower 27 in order to suppress uneven distribution of temperature and humidity in the test chamber 6 and to facilitate temperature and humidity adjustment. Respectively.

The air introducing guide 8 is formed between the heater 26 and the blower 27 as shown in Fig. 1, and restricts the air flowing into the blower 27. As shown in Fig. That is, the air introducing guide 8 is a member mainly serving as an auxiliary flow path for introducing the air that has passed through the heater 26 to the blower 27. 2, the air introduction guide 8 is formed by the introduction flow path forming member 12 mounted on the blower 27. [

As shown in Figs. 3 and 4, the introduction flow path forming member 12 has a substantially trapezoidal shape in outer appearance and is constituted by the flow path forming portion 21 and the mounting portion 22. As shown in Fig. As shown in Fig. 2, the flow path forming portion 21 is a portion surrounding the air inlet 35 of the blower 27, and is formed by bending a metal member having a predetermined width (length in the depth direction of Fig. 3) As shown in Fig. That is, the flow path forming portion 21 has a connecting wall (great wall) 40 connecting the two inclined walls (great walls) 37 and 38 and the two inclined walls 37 and 38. The two inclined walls 37 and 38 are disposed at the ends of the connecting wall 40, respectively. The inclined walls 37 and 38 extend from the end of the connecting wall 40 to the same side of the connecting wall 40 and extend from the end of the inclined wall 37 And 38 are mutually separated from each other in an oblique direction. That is, the flow path forming portion 21 forms the shoulder space 32 by the inclined walls 37 and 38 and the connecting wall 40. [ The flow path forming portion 21 has an opening portion (inlet opening) 25 formed between the ends where the inclined walls 37 and 38 are most distant from the side of the connecting wall 40 facing the surface.

As described above, the air introduction guide 8 is arranged in an oblique direction in which the inclined walls 37 and 38 are mutually separated, and has a shape widening toward the heater heater 26 side.

The mounting portion 22 is a portion contributing to the mounting to the blower 27. The mounting portion 22 is disposed on the outer side with respect to the trapezoid of the introduction flow path forming member 12 and is formed to extend over the two inclined walls 37 and 38 and the connecting wall 40. Specifically, the mounting portion 22 has a plate body 41 arranged to be substantially orthogonal to the flow path forming portion 21, and the plate body 41 has two inclined walls 37, 38 and a connecting wall 40 As shown in Fig. In the present embodiment, the plate body 41 is arranged to extend over a part of the two inclined walls 37 and 38 and the entire connection wall 40. The plate body 41 has a contour side 42 at a position separated from the flow path forming portion 21 and the contour side 42 is formed in a curved shape. Concretely, the contour side 42 is an arc that is a part of a circle of radius r (for example, a length equal to or slightly longer than the length of the connecting wall 40). The plate body 41 is provided with three through-holes 43 through which fastening means such as screws, which penetrate in the thickness direction of the member, are inserted.

As shown in Fig. 2, the resistance plate 11 is a rectangular plate having a predetermined size, and is configured to equalize the deflection of the flow rate distribution of the air discharged from the blower 27. As shown in Fig. That is, the resistance plate 11 is constituted by a resistance portion 45 and a fixing portion 46 bent in a direction substantially orthogonal to the end portion of the resistance portion 45.

Next, the positional relationship among the devices, members, and the like in the environmental test apparatus 1 will be described.

The environmental test apparatus 1 of the present embodiment is divided into the test chamber 6 and the air conditioning passageway 7 by the partition wall 4 formed in the constant temperature and constant humidity chamber 5 as described above. That is, the test chamber 6 and the air conditioning passageway 7 are adjacent to each other with the partition wall 4 as a boundary. The test chamber 6 and the air conditioning passageway 7 are also in communication with each other by the openings 9 and 19 formed above and below the partition wall 4.

The humidifier 14, the evaporator 15, the heater 26, and the blower 27 are arranged in this order from the upstream side (lower side in Fig. 1) of the air flow direction in the air conditioning passageway 7 Is installed. Further, the closed wall 16 is located on the downstream side of the suction port 35 of the blower 27, and the suction port 35 has a membrane structure before the suction port 35.

Each of the devices is arranged in series in the air-conditioning passageway 7 at regular intervals. More specifically, the humidifier 14 is fixed so as to be located substantially at the center of the bottom of the air-conditioning passageway 7. The evaporator 15 is fixed so as to almost entirely belong to the projection area formed when the humidifier 14 is projected vertically upward. The heating heater 26 almost entirely belongs to the projection area formed when the humidifier 14 is vertically projected upward and is fixed so as to substantially belong to the projection area formed when the evaporator 15 is vertically projected upward (The remaining part deviates from the projection area of the evaporator 15). The blower 27 is substantially in the projection area formed when the outer member 33 projects the humidifier 14 vertically upward and the blower 27 is a projection area formed when the evaporator 15 is projected vertically upward, And is fixed to the housing 2 so that a part of the projection area is formed when the heating heater 26 is projected vertically upward and the remaining part of the projection area is deviated from the projection area.

In order to further clarify the positional relationship between the humidifier 14, the evaporator 15, the heater 26 and the blower 27, on the basis of the size of the projection area in the vertical direction in the installation posture, The relative sizes of the respective devices in the case of the present invention will be described. The size of the humidifier 14 is the largest and is smaller in the order of the evaporator 15, the heater 26, and the outer member 33 of the blower 27. In other words, the gap P between the inner wall of the air conditioning passageway 7 and each device is the smallest (gap P1) in the position of the evaporator 15, and the position (gap P2) , And the position of the outer frame member 33 of the blower 27 (gap P3). In the present embodiment, a gap P1 is formed between the evaporator 15 and the partition wall 4, a gap P2 is formed between the heater 26 and the housing 2, and the blower 27 And a partition P3 is formed between the outer wall member 33 of the partition wall 4 and the partition wall 4. As shown in Fig. Therefore, in the air conditioning passageway 7, there is a portion where the evaporator 15 does not cover the humidifier 14. In addition, there is a portion where the heater 26 does not cover the evaporator 15. In addition, there is a portion where the blower 27 does not cover the heater 26. Therefore, in this embodiment, the guide plate 34 is formed so that the air that has passed through the evaporator 15 can not flow into the gap P2. 1, the guide plate 34 is disposed from the end of the evaporator 15 on the side of the housing 2 to the lower end of the heater 26. As shown in Fig.

In the present embodiment, the gap P3 is used as the main flow path for guiding air to the blower 27. [ That is, the blower 27 is provided in a posture in which the air inlet 35 is opened toward the gap P3.

An air introduction guide 8 is formed so as to surround the air inlet 35 of the air blower 27. 1, the introduction flow path forming member 12 is disposed in the gap P3 formed between the outer member 33 of the blower 27 and the partition wall 4, And is fixed to the blower 27 via a pipe. More specifically, the introduction flow path forming member 12 has an end portion (hereinafter simply referred to as a protruding end side end portion) opposite to an end portion where the mounting portion 22 is located in the flow path forming portion 21, And is fixed to the blower 27 in such a posture as to be opposed to the blower 27. At this time, a constant gap is formed between the end portion of the protrusion end side of the flow path forming portion 21 and the partition wall 4. In other words, the surrounding space 32 of the flow path forming portion 21 is surrounded by the outer member 33 of the blower 27 in addition to the inclined walls 37 and 38 and the connecting wall 40.

1, 2, and 5, the flow path forming portion 21 is provided with the heating heater 26 (see FIG. 1), the connecting wall 40 being disposed substantially in parallel with the bottom surface of the air conditioning passageway 7, In the vertical direction. In addition, the entire inflow opening 25 of the flow path forming portion 21 is positioned just above the heating heater 26. Specifically, the flow path forming portion 21 is formed in a predetermined range 1 (in the present embodiment, the lengthwise center in the longitudinal direction of the heating heater 26) And about one-half to two-thirds of the total length (L), including the vertical direction projection area.

Therefore, in the present embodiment, the air introduction guide 8 guides the air over the heating heater 26 from the inflow opening 25 into the shoulder space 32 and feeds the air to the flow path forming portion 21 and the blower 27 And is guided along the outer member 33 of the air blower 27 to the air inlet 35 of the air blower 27.

An obstruction wall 16 is disposed at an upper portion of the blower 27. That is, the closed wall 16 has the opening 17 penetrating in the thickness direction of the member in a state of communicating in the vertical direction of the air conditioning passageway 7 and the opening 17 is formed in the discharge port 36 of the blower 27, As shown in Fig.

A resistance plate 11 serving as a flow resistance of air is mounted on the upper surface side of the closed wall 16 in the vicinity of the opening 17. The resistance plate 11 is fixed to the stalk wall 16 in a posture in which the stent portion 46 is disposed so as to follow the edge portion of the opening 17. [ Specifically, the resistance plate 11 is mounted at a position where a discharge flow rate of the air discharged from the blower 27 is large, and a part of the discharge direction of the air is cut off. More specifically, in this embodiment, the resistance plate 11 is directed toward the discharge port 36 side of the blower 27 in the mounting posture, and the protruding end in the height direction abuts against the ceiling of the air conditioning passageway 7 have. The resistance plate 11 is stretched from the position slightly distanced from the partition wall 4 along the ridge portion of the opening 17 until it is caught by a part of the discharge port 36. [ That is, the resistance plate 11 reflects the air dispersed in the height direction from the clogged wall 16 to the ceiling of the air-conditioning passageway 7, so that the air is supplied from the partition wall 4 to the wall surface of the housing 2 And it is an arrangement capable of reflecting a part of the air dispersed in the depth direction of the passage 7 (left and right direction in Fig. 1).

Next, the basic operation of the environmental test apparatus 1 of the present embodiment will be described.

In the environmental test apparatus 1 of the present embodiment, the air in the thermo-hygrostat 5 is circulated by the blower 27, and a desired environment is created in the test chamber 6. The air in the constant temperature and constant humidity chamber 5 is sucked from the opening 9 on the lower side of the partition wall 4 to the air conditioning passageway 7 side by the blower 27 and the air conditioning passageway 7 is vertically upwardly Against. The air is then introduced into the air inlet 35 of the blower 27 and discharged from the discharge port 36 and discharged from the opening 19 on the upper side of the partition wall 4 to the test chamber 6 side.

6, the air in the air-conditioning passageway 7 is sucked into the suction port 35 of the blower 27 and discharged from the discharge port 36. In this case, do. The air discharged from the blower 27 is sent from the opening 19 on the upper side of the partition wall 4 to the test chamber 6 side. Thereby, a flow of air is formed along the wall surface in the test chamber 6. Air that has reached the opening 9 on the lower side of the partition wall 4 is again introduced into the air conditioning passageway 7. The air conditioning passageway 7 is provided with a humidifier 14, an evaporator 15 and a heater 26 in this order along the air flow direction as described above. Therefore, the air introduced into the air conditioning passageway 7 is humidified by the humidifier 14 as necessary, passes through the evaporator 15, and then flows to the heater heater 26 side.

The environmental test apparatus 1 monitors the current temperature (current temperature) and the current relative humidity (current relative humidity) in the test chamber 6 by the indoor temperature detection means 23 and the indoor humidity detection means 24 (The humidifier 14, the evaporator 15, the heater 26, and the blower 27) are controlled based on predetermined setting conditions.

Next, the characteristic functions of the environmental test apparatus 1 of the present embodiment will be described.

The environmental test apparatus 1 of the present embodiment facilitates adjustment of the temperature and humidity in the test chamber 6 by suppressing uneven distribution of the temperature and humidity of the air discharged from the blower 27 during the basic operation , And also has a function capable of suppressing uneven distribution of temperature and humidity in the test chamber 6.

The environmental test apparatus 1 of the present embodiment is provided with an air introduction guide 8 on the upstream side of the blower 27 to restrict the air flowing into the blower 27. [ That is, in the present embodiment, the air introducing guide 8 blocks the flow of air from the staying region where the air is staying to the blower 27, and directs the desired temperature-adjusted air to the blower 27. As a result, the air in the vicinity of the heater 26 can be guided into the blower 27 because the air inlet 35 of the blower 27 comes close to the heater 26 side in a pseudo manner. More specifically, as shown in Fig. 7, the distance H from the air inlet 35 to the heater 26 is reduced to the pseudo range h by forming the air introduction guide 8. More specifically, the inlet opening 25 of the introduction flow path forming member 12 is brought close to the heating heater 26 and the inlet opening 25 thereof is directed downward so as to open toward the heating heater 26 . As a result, the air sucked into the suction port 35 of the blower 27 substantially becomes air that has passed through the inflow opening 25, and the distance between the suction port 35 of the blower 27 and the heater 26 becomes Reduced to physician. As a result, the air introduction guide 8 can concentrate the suction force of the air in the blower 27 downward. That is, when the blower 27 is started, the air in the vicinity of the downstream side of the heater 26, that is, almost immediately above the heater 26, is sucked, as shown in Fig. The air that has passed through the heater 26 and the air that has passed through the clearance P2 and reaches the vicinity of the downstream side of the heater heater 26 flows to be sucked into the shoulder space 32 in the air guide 8. Particularly, in the present embodiment, the ratio of the air that has passed through the heater 26 can be increased. This makes it possible to greatly reduce the temperature distribution of the air introduced into the blower 27 and the distribution of humidity.

Thus, the air introduced into the blower 27 is discharged from the discharge port 36 to the outside of the blower 27. That is, the air is blown out from the blower 27 at a flow rate deflected mainly from the opening 17 of the closed wall 16 in the rotating direction (the running direction) of the rotating pin 28. More specifically, the discharge flow rate of the blower 27 is larger in the rightward direction (rotational direction of the rotational pin 28) with reference to FIG. 2, and less in the leftward direction (the rotational direction of the rotational pin 28) . 7 and 8, the air flowing in the rotating direction of the rotating pin 28 is partially blown out of the resistance plate 11, because the resistance plate 11 is formed in the vicinity of the opening 17. In this embodiment, Collides with the housing 11 and flies in a direction opposite to the rotating direction of the rotating pin 28. Only the remaining air flows out between the resistance plate 11 and the housing 2 and flows in the rotating direction. Thus, the air discharged from the blower 27 spreads substantially evenly in the width direction (left and right direction in FIG. 8) of the air conditioning passageway 7 and is sent out into the test chamber 6. That is, air in the test chamber 6 having almost no temperature and humidity distribution irregularities can be sent with a substantially uniform flow rate distribution.

As described above, according to the present embodiment, the air introduction guide 8 is formed so that the air that has reached the vicinity of the downstream side of the heater 26 is restricted to be sucked from the suction port 35 of the blower 27, It is possible to reduce uneven distribution of the temperature and humidity of the passing air. This can suppress the distribution of the temperature and humidity distribution of the air discharged from the blower 27 within a predetermined range. That is, as shown in the following Table 1, in the case of the environmental test apparatus 1 having the above-described configuration (Example), the distribution of the temperature distribution of the air discharged from the discharge port 36 of the blower 27 is expressed as Celsius It could be suppressed to within 1.0 degree (actually 0.3 degree Celsius). On the other hand, in the case of the conventional environmental test apparatus without the air introduction guide 8 (comparative example), the temperature distribution unevenness of the air discharged from the discharge port of the blower exceeded 3.0 degrees Celsius (actually 3.2 degrees Celsius).

Table showing the temperature distribution at the discharge port The half-rotation direction end (left side) The rotational direction end of the discharge port (right side) Discharge port temperature difference Example 121.9 ° C 122.2 DEG C 0.3 ℃ Comparative Example 122.8 DEG C 119.6 ° C 3,2 캜

In addition, in the present embodiment, since the resistance plate 11 is formed and the deflection of the flow rate distribution discharged from the blower 27 can be made substantially uniform, uneven distribution of temperature and humidity in the test chamber 6 can be suppressed . As a result, the temperature and humidity in the test chamber 6 can be easily adjusted, and the test environment can be stably maintained. Thus, according to the present embodiment, the test accuracy can be improved and the reliability of the test result can be improved.

In the above embodiment, the introduction flow path forming member 12 has a trapezoidal shape. However, the present invention is not limited to this, and other shapes of the introduction flow path forming member may be employed. For example, as shown in Fig. 9, the introduction flow path forming member 38 may be an " acid " type member having a curved surface formed by bending a member having a constant width into a curved shape. Further, as shown in Fig. 10, the introduction flow path forming member 39 having a triangular shape may be used.

Further, the contour sides of the introduction passage forming member mounting portion are not limited to the circular arc, but may be trapezoidal, curved, or triangular in conformity with the shape of the introduction flow passage forming member.

In the above embodiment, the width of the inflow opening 25 of the flow path forming portion 21 is only about the width of the member (the length from the partition wall 4 to the outer member 33 of the blower 27) However, the present invention is not limited to this, and the width of the inflow opening may be wider than that of the above embodiment. For example, as shown in Fig. 11, a flow path forming portion 47 having a flow path opening 50 extending to a width equal to the heating degree of the heater 26 can be mentioned.

12, the present invention adopts the introduction flow passage forming member 48 on the case having the communication opening 49 communicating with the inlet opening 25 and the inlet port 35 of the blower 27 It may be a configuration.

The present invention is not limited to this configuration but may be applied to a case where the resistance plate 11 is removed from the ceiling surface of the housing 2 Or may be configured to be fixed so as to hang down. As shown in Fig. 13, the slanting plate 51 may be used to fix the slanting wall 16 to the slanting wall 16 at a predetermined angle. Likewise, the resistance plate 51 may be fixed to the ceiling surface of the housing 2.

14, the hanging member 53 is mounted on the ceiling of the housing 2, and the resisting plate 52 is inclined at a predetermined angle with respect to the hanging member 53 Or may be arranged so as to be shown.

Although the rectangular plate 11 is used in the above embodiment, the present invention is not limited to this. As shown in Fig. 15, a resistive plate 55 having a curved cross- It may be a configuration adopted.

In the above embodiment, the planar resistor plate 11 having a constant thickness is used. However, the present invention is not limited to this. As shown in Fig. 16, the resistor plate 11 having a predetermined number of slits 57 (56) may be employed.

Although the above embodiment has been described by taking the configuration of the environmental test apparatus 1 employed as the constant temperature and humidity apparatus as an example, the present invention is not limited to this and can be applied to the constant temperature apparatus without the humidifier 14 as well. The present invention can also be applied to an environmental test apparatus having other functions, for example, a cold / heat shock test apparatus.

In the above embodiment, the air conditioning passageway 7 is arranged on the side of the test chamber 6 and the air flows in the height direction. However, the present invention is not limited to this. The air conditioning passageway 7 may be arranged above or below the test chamber 6 and the air may flow in the horizontal direction.

In the above embodiment, the air conditioning passageway 7 has the structure in which the humidifier 14, the evaporator 15, and the heater 26 are disposed in this order from the upstream side in the air flow direction. But is not limited thereto. For example, the heating heater 26, the humidifier 14, the evaporator 15 or the evaporator 15, the humidifier 14, and the heater 26 may be disposed in this order from the upstream side.

In the above embodiment, the structure in which the size of the projected area in the vertical direction is the largest in which the humidifier 14 is the largest, and the evaporator 15 and the heater 26 are reduced in that order is shown. However, But the size of each device may be any size. That is, the respective devices arranged in the air conditioning passageway 7 can be expected to have the same effects as those of the above embodiments, regardless of their positional relationship or size.

However, when the size of each device is changed, the device having the smallest projection area in the vertical direction is disposed at the position (the most downstream side) closest to the air introduction guide 8 in the air conditioning passageway 7 And in this case, a particularly high effect can be obtained.

In the above embodiment, the air conditioning passageway 7 is provided with the two heat sources of the evaporator 15 and the heater 26. However, the present invention is not limited to this, .

The protruding end side end of the introduction flow path forming member 12 of the air introduction guide 8 does not abut against the partition wall 4 in the above embodiment. However, the present invention is not limited to this, The protruding end side end of the partition wall 12 may be in contact with the partition wall 4. This makes it possible to provide a stay area that can be formed above the air intake port 35 of the air blower 27 and a stay space 32 in which the conditioned air leading to the air intake port 35 of the blower 27 is blocked It is possible to further equalize the temperature distribution of the air flowing into the blower 27 and the distribution of the humidity.

Although the guide plate 34 is formed between the heater 26 and the evaporator 15 in order to block the air passing between the heater 26 and the housing 2 in the above embodiment, The present invention is not limited to this, and the guide plate 34 may not be formed.

1 Environmental test equipment
4 partition wall
6 Laboratory (test space)
7 Aisle for air conditioning (air conditioning space)
8 Air Intake Guide
11, 51, 52, 55 resistance plate (resistor)
12 introduction flow path forming member
14 Humidifier
15 Evaporator (cooler, second heat source)
16 closed wall
17 aperture
21, 47,
25, 50 inlet opening
26 Heating heater (first heat source)
27 blower
28 Rotating pin
32th floor space
33 outer member
35 intake port
36 Outlet
56 Resistor

Claims (10)

An air conditioning space, and a test space in which the sample body is disposed,
Wherein the air conditioning space is provided with a blower and a heat source having at least one of a heating function and a cooling function,
An environment test apparatus for circulating air between an air conditioning space and a test space to form a desired environment in a test space,
The blower is provided with an air inlet, and the direction of the air sucked from the air inlet is the direction of the air passing through the heat source in the direction of the air passing through the heat source Respectively,
A closed wall is formed on the downstream side in the air flow direction of the air adjusting space to have a membrane structure,
Between the heat source and the blower, there is formed an air introduction guide for guiding the air whose temperature is adjusted by the heat source to the blower,
Wherein the air introduction guide has a surrounding wall surrounding a portion of the periphery of the inlet port other than the direction in which the heat source is present and an inlet opening for guiding air into the surrounding wall. The environmental test apparatus according to claim 1, wherein the air introduction guide has an inlet opening on an upstream side with respect to a flow direction of air, and the inlet opening is formed to open toward the heat source. The environmental test apparatus according to claim 2, wherein the inflow opening is disposed so as to be located in a projection plane projected toward the inflow opening. The air conditioning apparatus according to claim 1, wherein the heat source is smaller than an area occupied by the heat source in a direction orthogonal to a flow direction of the air in a direction orthogonal to the flow direction of the air, Environmental testing equipment. 2. The apparatus of claim 1, wherein the heat source has a first heat source and a second heat source,
Wherein the air conditioning space is arranged in the order of the second heat source, the first heat source, and the blower from the upstream side in the air flow direction,
Wherein the first heat source has an area occupied in a direction orthogonal to the flow direction of the air is smaller than an area occupied by the second heat source in a direction orthogonal to the flow direction of the air. An air conditioning space, and a test space in which the sample body is disposed,
An air introducing opening communicating with the air adjusting space and the test space, and an air discharging opening,
Wherein the air conditioning space is formed with a blower having an air inlet and an air outlet, a first heat source having a heating function, and a second heat source having a cooling function,
An environment test apparatus for circulating air between an air conditioning space and a test space to form a desired environment in a test space,
A closed wall is formed on the downstream side in the air flow direction of the air adjusting space to have a membrane structure,
A second heat source, a first heat source, and an air intake port of a blower are formed in sequence between the air introduction opening and the obstruction wall, the air intake port of the blower opening in a direction crossing the air flow direction, Is drawn through the second heat source, the first heat source, the air suction port by the blower, and discharged to the air discharge opening side,
An air introduction guide for shielding a flow of air from the space formed between the intake port and the obstruction wall toward the intake port is formed,
Wherein the air introduction guide has a surrounding wall surrounding a portion of the periphery of the inlet port other than the direction in which the heat source is present and an inlet opening for guiding air into the surrounding wall. The air conditioner according to claim 6, wherein the air introduction guide has a weft wall surrounding a portion of the periphery of the inlet port other than the direction in which the first heat source is present, and an inflow opening for guiding air into the weft wall, And has a shape that widens toward the heat source side,
Wherein the first heat source has an area occupied in a direction orthogonal to the flow direction of the air is smaller than an area occupied by the second heat source in a direction orthogonal to the flow direction of the air,
Wherein the inflow opening is disposed so as to be located in a projection plane projected toward the inflow opening. 8. The environmental test apparatus according to any one of claims 1 to 7, wherein the blower has a discharge port for discharging air, and a resistor which becomes the flow resistance of air is formed in the vicinity of the discharge port. The air conditioner according to claim 8, wherein the blower is a multi-
Wherein the resistor is formed so as to block the discharge direction of the air from the discharge port. delete

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