CN108931472B

CN108931472B - Environmental test device and heat treatment device

Info

Publication number: CN108931472B
Application number: CN201810245002.5A
Authority: CN
Inventors: 渡边正和; 谷口修一
Original assignee: Espec Corp
Current assignee: Espec Corp
Priority date: 2017-05-29
Filing date: 2018-03-23
Publication date: 2021-06-08
Anticipated expiration: 2038-03-23
Also published as: DE102018106823A1; JP6657141B2; CN108931472A; JP2018200254A

Abstract

The environment test device of the present invention includes: a blower (26) which is formed by an axial fan having a rotating shaft (26b) and blows air-conditioning air into the laboratory (R1), wherein the rotating shaft is arranged at a position deviated from the center of a partition member (16) forming the laboratory in a predetermined direction; a flow regulating member (33) for regulating the direction of the air flow of the air-conditioning air on the blowing side of the blower; and an obstruction part (40) which obstructs the flow of the air-conditioning air at the blowing side of the blower. The interference portion has portions arranged at the following positions: the blade of the axial flow fan is located on a side facing the predetermined direction when the blower is operated with respect to a first virtual plane including the rotation axis and extending in the predetermined direction, and is located at a position offset in the predetermined direction with respect to a second virtual plane including the rotation axis and perpendicular to the first virtual plane. This can suppress the occurrence of temperature distribution in the test chamber.

Description

Environmental test device and heat treatment device

Technical Field

The present invention relates to an environmental test apparatus and a heat treatment apparatus.

Background

Conventionally, there is known an environmental test apparatus in which a test chamber is adjusted to a predetermined temperature and humidity as a test environment, and a test piece placed in the test chamber is placed in the test environment to test the performance and the like of the test piece. For example, an environmental test apparatus disclosed in japanese patent laid-open publication No. 2004-. The cooler 83 and the perforated plate 84 constitute a partition wall for partitioning the laboratory 81 and the air-conditioning room 82. The heater 85 and the blower 86 are disposed in the air conditioning room 82. The blower 86 is disposed substantially in the center of the side wall (perforated plate 84) of the laboratory 81.

In the environmental test apparatus disclosed in japanese patent laid-open publication No. 2004-. For example, the blower 86 may be disposed at a position offset from the center of the side portion. When the temperature distribution in the test chamber 81 at this time is examined, it is found that the temperature in the test chamber 81 is likely to be distributed. This is not limited to the environmental test apparatus, and occurs similarly in a heat treatment apparatus that performs heat treatment on an object to be treated in a heat treatment chamber.

Disclosure of Invention

The present invention has been made in view of the above-mentioned conventional techniques, and an object thereof is to: in an environmental test apparatus or a heat treatment apparatus in which a blower is disposed at a position deviated from the center of the inner wall surface of a test chamber or a heat treatment chamber, the occurrence of temperature distribution in the test chamber or the heat treatment chamber is suppressed.

The present inventors have studied, for example, the temperature distribution in a room (e.g., a laboratory) in a case where an indoor fan is disposed at a position offset upward from the center portion of the inner wall surface. In this case, it is found that the temperature changes relatively quickly at the upper side of the room and relatively slowly at the lower side, and therefore, when the heated air is generated, the temperature at the upper side of the room tends to be relatively high and the temperature at the lower side tends to be relatively low. Further, it was found that a temperature distribution occurred in the upper side of the chamber due to the relation with the rotation direction of the blower. The present inventors have made intensive studies, and as a result, have found that the temperature distribution is related to the direction in which the position of the fan deviates from the center of the inner wall surface and the direction in which the blades of the fan rotate.

An environment testing apparatus according to an aspect of the present invention includes: a blower that is formed of an axial fan having a rotary shaft and blows air-conditioned air into a test chamber, the rotary shaft being disposed at a position offset in a predetermined direction from a central portion of an inner wall surface forming the test chamber; a flow regulating member that regulates a direction of an air flow of the air-conditioning air on a discharge side of the blower; and an interference portion that interferes with the flow of the air-conditioning air on the outlet side of the blower, wherein the interference portion has portions arranged at: the blade of the axial fan is moved in the predetermined direction with respect to a first virtual plane including the rotary shaft and extending in the predetermined direction, and is positioned to be deviated in the predetermined direction with respect to a second virtual plane including the rotary shaft and perpendicular to the first virtual plane.

Another aspect of the present invention relates to a heat treatment apparatus including: a blower formed of an axial fan having a rotary shaft disposed at a position deviated in a predetermined direction from a center of an inner wall surface forming the heat treatment chamber, and blowing air-conditioned air into the heat treatment chamber; a flow regulating member that regulates a direction of an air flow of the air-conditioning air on a discharge side of the blower; and an interference portion that interferes with the flow of the air-conditioning air on the outlet side of the blower, wherein the interference portion has portions arranged at: the blade of the axial fan is moved in the predetermined direction with respect to a first virtual plane including the rotary shaft and extending in the predetermined direction, and is positioned to be deviated in the predetermined direction with respect to a second virtual plane including the rotary shaft and perpendicular to the first virtual plane.

According to the present invention, it is possible to suppress the occurrence of temperature distribution in a test chamber or a heat treatment chamber.

Drawings

Fig. 1 is a diagram schematically showing the configuration of an environment testing apparatus according to a first embodiment.

Fig. 2 is a view partially showing a laboratory of the environmental test apparatus.

Fig. 3 is a perspective view of a rectifying member provided in the environment testing apparatus.

FIG. 4 is a perspective view of a finger pinch prevention member provided in the environmental test apparatus.

FIG. 5 is a perspective view of a finger pinch prevention member provided in the environmental test apparatus.

Fig. 6 is a diagram for explaining a position where the obstacle portion is disposed in the finger pinching prevention member.

Fig. 7 is a diagram partially showing a laboratory of the environment testing apparatus according to the modification of the first embodiment.

Fig. 8 is a diagram showing a barrier portion and a sub-barrier portion provided in the environment testing apparatus according to the modification of the first embodiment.

Fig. 9 is a diagram schematically showing the configuration of a heat treatment apparatus according to a second embodiment.

Fig. 10 is a diagram schematically showing the configuration of a conventional environmental test apparatus.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the drawings.

(first embodiment)

As shown in fig. 1, the first embodiment is an environmental test apparatus (chamber) 10 for performing a test in which a test piece W1 provided in a test room R1 is placed in a predetermined temperature environment. The environment testing apparatus 10 according to the present embodiment is an oven in which a test piece (workpiece) W1 is placed in an atmosphere of a predetermined temperature condition and a thermal load is applied to the test piece W1. The environmental test apparatus 10 is not limited to this, and may be a constant temperature and humidity chamber in which the specimen W1 is placed in an atmosphere of a predetermined temperature condition and a predetermined humidity condition and a heat load is applied to the specimen W1. At this time, a humidifier is also provided.

The environmental test apparatus 10 according to the first embodiment includes a hollow case 12 having a rectangular parallelepiped shape as a whole. The casing 12 includes a door body 12a constituting a front side wall, a left side wall 12b, a right side wall 12c (see fig. 2), a rear side wall 12d, a bottom surface portion 12e, and a ceiling portion 12 f. The case 12 is formed of a heat insulating plate in which a heat insulating material is covered with a metal or resin plate. A machine chamber housing 14 that partitions a machine chamber is provided on the rear side of the housing 12. The right and left sides refer to the right and left sides when viewed from the front side, with the door body 12a side being the front side.

A partition member 16 is provided in the case 12, and the space in the case 12 is divided into two spaces by the partition member 16. In the present embodiment, the partition member 16 is disposed in the middle portion in the front-rear direction in the housing 12, and is partitioned into a space on the front side and a space on the rear side. A test piece W1 is housed in the space on the front side of the partition member 16. That is, a test room (work room) R1 for accommodating the test piece W1 is formed by the door body 12a and the partition member 16, and the portions of the left side wall 12b, the right side wall 12c, the bottom surface portion 12e, and the top portion 12f that are located forward of the partition member 16. Therefore, the front surface of the partition member 16 functions as one inner wall surface forming the test chamber R1. Similarly, the right surface of the left side wall 12b, the left surface of the right side wall 12c, the rear surface of the door body 12a, the upper surface of the bottom surface portion 12e, and the lower surface of the ceiling portion 12f function as inner wall surfaces forming the test chamber R1, respectively.

On the other hand, a device for adjusting the temperature environment in the laboratory R1 is housed in the space on the rear side of the partition member 16. That is, the air-conditioning room R2, which houses equipment for adjusting the temperature in the laboratory R1, is formed by the partition member 16, the rear wall 12d, and the portions of the left side wall 12b, the right side wall 12c, the bottom portion 12e, and the top portion 12f that are positioned on the rear side of the partition member 16. Therefore, in the present embodiment, an air conditioning room R2 is disposed behind the test room R1. The rear surface of the partition member 16 functions as one inner wall surface forming the air-conditioning compartment R2. Similarly, the right surface of the left side wall 12b, the left surface of the right side wall 12c, the front surface of the rear side wall 12d, the upper surface of the bottom portion 12e, and the lower surface of the ceiling portion 12f function as inner wall surfaces forming the air-conditioned room R2, respectively.

The laboratory R1 is provided with a support table 18 for placing a test piece W1, and a changing means 19 for changing the installation position of the support table 18. In the present embodiment, the changing member 19 is provided on the left side wall 12b and the right side wall 12c, and the height of the support base 18 can be changed.

A stepped portion 16a is formed at the middle portion of the partition member 16. That is, the partition member 16 includes: a first surface portion 16b having a planar wall surface; a second surface portion 16c arranged at a position offset from the first surface portion 16b and having a planar wall surface; and a step portion 16a connecting the first surface portion 16b and the second surface portion 16 c. In the present embodiment, the first face portion 16b and the second face portion 16c are arranged in a vertical posture, and the step portion 16a is arranged in a horizontal posture. The first surface portion 16b is located above the second surface portion 16c at a position offset toward the air-conditioned room R2 side from the second surface portion 16 c. The partition member 16 is formed of sheet metal, for example. In the present embodiment, the stepped portion 16a is located above the central portion 21 of the partition member 16 in the height direction.

The partition member 16 is provided with two

communication holes

23 and 24 for communicating the space in the air-conditioning room R2 with the space in the test room R1. The first communication hole 23 is disposed above the central portion 21 of the partition member 16 in the height direction, and the second communication hole 24 is disposed below the central portion 21 of the partition member 16. Further, a first communication hole 23 is formed in the first face 16b, and a second communication hole 24 is formed in the second face 16 c. In addition, the second communication hole 24 may be formed by a gap between the partition member 16 and the bottom surface portion 12 e. Further, the first communication hole 23 may be formed by a gap between the partition member 16 and the top 12 f.

In the present embodiment, as will be described later, since the conditioned air blown out from the blower 26 flows from the conditioned room R2 into the test room R1 through the first communication hole 23, the first communication hole 23 functions as an air outlet from which the conditioned air is blown out. On the other hand, since the air in the test room R1 flows into the air-conditioning room R2 through the second communication hole 24, the second communication hole 24 functions as a suction port for sucked air.

The air-conditioning room R2 is provided with a cooler 28 for cooling air in the air-conditioning room R2, a heater 30 for heating air in the air-conditioning room R2, and a blower 26. The temperature of the air in the air-conditioned room R2 is adjusted by the cooler 28 and the heater 30, and becomes air-conditioned air.

The blower 26 is formed of an axial flow fan having a motor 26a fixed to the rear side wall 12d and an impeller 26c fixed to a rotary shaft 26b of the motor 26 a. The motor 26a is located in a machine room disposed on the rear side of the rear side wall 12 d. The rotary shaft 26b penetrates the rear wall 12d and extends forward (toward the test room R1) in the air-conditioning room R2. The distal end of the rotating shaft 26b is disposed concentrically with the center of the first communication hole 23 of the partition member 16. The impeller 26c has a plurality of blades arranged in the circumferential direction around the rotating shaft 26 b. Then, if the motor 26a is operated and the impeller 26c is rotated, the air-conditioning air blown from the blower 26 flows into the test room R1 through the first communication hole 23. In addition, the blower 26 may be disposed further inside the air-conditioning compartment R2 than the motor 26.

As shown in fig. 2, a flow regulating member 33 and a finger pinching preventing member 35 are disposed on the outlet side of the blower 26. The flow straightening member 33 is a member for adjusting the direction of the flow of the air-conditioning air blown out from the blower 26. The finger pinch preventing member 35 is a member for preventing fingers from entering the blower 26.

As shown in fig. 3, the flow rectification member 33 includes a frame portion 37 and a plurality of blade portions 38 supported by the frame portion 37. The frame portion 37 includes a plurality of support members 37a arranged at intervals from each other and a plurality of connection members 37b connecting the support members 37 a. In the present embodiment, the support member 37a has a posture extending vertically, and the connection member 37b is connected to the upper end and the lower end of the support member 37a and has a posture extending horizontally.

The plurality of blade portions 38 are disposed at intervals from each other. One end in the longitudinal direction of each blade 38 is connected to one of the mutually adjacent support members 37a, and the other end in the longitudinal direction of each blade 38 is connected to the other of the mutually adjacent support members 37 a. The blade portions 38 are arranged at intervals in the vertical direction, and a plurality of rows of the blade portions 38 are provided in the horizontal direction.

In addition, the support member 37a may have a horizontally extending posture. At this time, the connecting member 37b is connected to one end and the other end of the support member 37a in the longitudinal direction, and has a posture of extending vertically. The blade portions 38 are formed in a shape extending in the vertical direction, and are arranged at intervals in the horizontal direction, and a plurality of rows of the blade portions 38 are provided in the vertical direction.

In the present embodiment, since 5 support members 37a are provided, four rows of blade portions 38 are provided. The connecting member 37b is bent at the same angle at the second supporting member 37a from the end. Accordingly, the frame portion 37 includes a front surface portion 37c extending in a direction perpendicular to the rotation shaft 26b of the blower 26, a first inclined surface portion 37d connected to one side of the front surface portion 37c, and a second inclined surface portion 37e connected to the other side of the front surface portion 37 c. The first inclined surface portion 37d extends in a direction inclined at a predetermined angle with respect to the front surface portion 37 c. The second inclined surface portion 37e extends in a direction inclined at a predetermined angle to the front surface portion 37c on the opposite side of the first inclined surface portion 37 d. The normal direction of the first inclined surface portion 37d is a posture in a direction away from the rotation shaft 26b toward the vertical direction of the rotation shaft 26b as it goes away from the blower 26. The second inclined surface portion 37e faces a direction symmetrical to the first inclined surface portion 37d with respect to the direction of the rotation shaft 26 b.

The front surface portion 37c is provided with blade portions 38 extending in a direction perpendicular to the rotation shaft 26b of the blower 26. The first inclined surface portion 37d is provided with blade portions 38 extending in a direction inclined with respect to the rotation shaft 26b of the blower 26. The second inclined surface portion 37e is provided with blade portions 38 extending in a direction inclined in a direction opposite to the blade portions 38 of the first inclined surface portion 37d with respect to the rotation shaft 26b of the blower 26. In the front portion 37c, two rows of the blade portions 38 are formed, but the present invention is not limited to this. May be one row or 3 or more rows. Further, the first inclined surface portion 37d and the second inclined surface portion 37e are formed in a row of the blade portions 38, but the present invention is not limited thereto. There may be two or more rows.

The support members 37a at both ends are formed with attachment holes 37f for attaching the rectifying member 33 to the partition member 16. The rectifying member 33 can be fixed to the partition member 16 by hooking the head of the screw 39 fixed to the partition member 16 into the mounting hole 37 f. That is, the rectifying member 33 can be attached to and detached from the partition member 16. The rectifying member 33 is not limited to the structure attached to the partition member 16, and may be, for example, a structure attached to the ceiling portion 12f (the inner wall surface of the air-conditioning room R2). Further, the rectifying member 33 may be a structure that is not detachable from the partition member 16 or the top portion 12 f.

The rectifying member 33 is formed of sheet metal. The sheet metal is press-worked and the connecting member 37b is bent, thereby forming a member in a state where the blade portions 38 are parallel to the support member 37 a. Then, the blade portions 38 are rotated so that the direction of the blade portions 38 with respect to the support member 37a changes with both ends of the blade portions 38 as axes, and the rectifying member 33 is formed.

The finger pinching prevention member 35 is disposed between the blower 26 and the rectifying member 33. That is, the finger pinch prevention member 35 is disposed on the rear side of the rectifying member 33. However, the finger pinch prevention member 35 may be disposed on the opposite side of the air blower 26 from the air rectifying member 33. In this case, the finger pinch prevention member 35 is disposed on the front side of the rectifying member 33.

As shown in fig. 4 and 5, the finger pinching prevention member 35 is formed of a member formed with a plurality of holes 35 a. Specifically, the finger pinching prevention member 35 is provided with a hole forming portion in which a plurality of holes 35a having a width that prevents the entry of fingers and through which air-conditioning air passes are formed. In the illustrated example, the hole 35a is illustrated as a rectangular hole that is long in one direction, but the shape of the hole 35a is not limited thereto, and may be, for example, a circular hole. Further, the hole forming part may be formed in a mesh shape.

The finger pinch preventing member 35 is provided with an attachment portion 35c, and the attachment portion 35c is formed with an insertion hole 35b through which a fastener for fixing the finger pinch preventing member 35 is inserted.

The finger grip preventing member 35 is formed of a thin sheet metal. The finger pinching prevention member 35 has a front surface portion 35d, a first inclined surface portion 35e, and a second inclined surface portion 35f, similarly to the rectifying member 33. The front face 35d of the finger pinch prevention member 35 is disposed parallel to the front face 37c of the rectifying member 33, the first inclined face 35e of the finger pinch prevention member 35 is disposed parallel to the first inclined face 37d of the rectifying member 33, and the second inclined face 35f of the finger pinch prevention member 35 is disposed parallel to the second inclined face 37e of the rectifying member 33. The front surface portion 35d extends in a direction perpendicular to the rotation shaft 26b of the blower 26. The first inclined surface portion 35e is connected to one end of the front surface portion 35d, and extends in a direction inclined at a predetermined angle with respect to the front surface portion 35 d. The second inclined surface portion 35f is connected to the other end portion of the front surface portion 35d, and extends in a direction inclined at a predetermined angle to the front surface portion 35d on the opposite side of the first inclined surface portion 35 e. The hole forming portions are provided on the front surface portion 35d, the first inclined surface portion 35e, and the second inclined surface portion 35f, respectively. The first inclined surface portion 35e and the second inclined surface portion 35f are located mainly outside the impeller 26c of the blower 26 when viewed in the direction of the rotation shaft 26b of the blower 26 (see fig. 6).

The finger pinching prevention member 35 is fixed to the rectifying member 33 by an unillustrated fastener inserted through the insertion hole 35b of the mounting portion 35 c. Therefore, by detaching the rectifying member 33 from the partition member 16, the finger pinching prevention member 35 is also detached from the partition member 16 together. The finger pinching prevention member 35 may be fixed to the partition member 16 without being fixed to the rectifying member 33.

The finger pinching prevention member 35 is provided with an interfering portion 40 that interferes with the flow of the air-conditioning air. The interference portion 40 is flat and disposed on the first inclined surface portion 35 e. That is, the interference portion 40 is formed at a position separated from the first imaginary plane P1 described later in the direction of the second imaginary plane P2 described later. The interference portion 40 has an area larger than the areas of the plurality of gaps formed between the mutually adjacent blade portions 38 of the flow rectification member 33. The position where the interference portion 40 is provided is set based on the direction (direction a) in which the rotary shaft 26b of the blower 26 is offset from the central portion 21 of the partition member 16 in which the first communication hole 23 functioning as the outlet of the conditioned air is formed and the rotation direction of the impeller 26c of the blower 26. The following is a detailed description.

The rotation shaft 26b of the blower 26 is disposed at a position offset in the a direction (in the present embodiment, the upward direction) with respect to the central portion 21 of the partition member 16 (see fig. 1). Therefore, the blower 26 is disposed at a position closer to the lower surface of the ceiling portion 12f than the right surface of the left side wall 12b, the left surface of the right side wall 12c, and the upper surface of the bottom surface portion 12 e. That is, the lower surface of the ceiling portion 12f is an inner wall surface located closer to the blower 26 than other inner wall surfaces excluding the front surface of the partition member 16 among the inner wall surfaces constituting the test room R1. The impeller 26c of the blower 26 is set to rotate clockwise when viewed from the front. For example, in fig. 6 in which the finger pinch prevention member 35 is viewed from the front, the rotary shaft 26B and the impeller 26c are set to rotate in the direction indicated by the arrow B. Therefore, in fig. 6, at a position on the left side with respect to a first imaginary plane P1 including the rotation shaft 26b and extending in the direction along the a direction, when the blower 26 is operated, the blade of the impeller 26c moves in the a direction.

At this time, if there is no obstacle 40, the lower surface of the ceiling portion 12f is present near the left side of the first virtual plane P1, and therefore, the airflow is fast on the a direction side with respect to the second virtual plane P2 that is perpendicular to the first virtual plane P1 and includes the rotation axis 26b, and the airflow tends to slow on the opposite side to the a direction with respect to the second virtual plane P2. Therefore, the air-conditioning air blown out from the blower 26 easily flows along the lower surface of the ceiling portion 12f on the left side of the first imaginary plane P1. Therefore, even if the air flow is directed obliquely opposite to the direction a by the blade portions 38 of the rectifying member 33, the temperature near the ceiling portion 12f tends to change rapidly in the test chamber R1.

In contrast, in fig. 6, the interference portion 40 includes a site (first site 40a) of the specific region disposed at a position shifted in the a direction from the second imaginary plane P2 on the left side (one side) of the first imaginary plane P1. The interference portion 40 also includes a portion (second portion 40b) disposed at a position offset from the first portion 40a in the direction opposite to the a direction with respect to the second virtual plane P2. Therefore, in the present embodiment, the interference portion 40 is provided on the left side of the first virtual plane P1 in a range from a specific region on the upper side of the second virtual plane P2 to the lower side of the second virtual plane P2. However, the area of the second portion 40b is smaller than the area of the first portion 40 a. By providing the interference portion 40 including the first portion 40a, the speed of the airflow in the specific region deviated in the a direction from the second imaginary plane P2 on the left side of the first imaginary plane P1 is reduced. Therefore, the speed of the airflow can be increased on the opposite side of the second virtual plane P2 from the direction a where the speed of the airflow is not high originally. This can suppress the occurrence of temperature distribution in the laboratory R1.

In the illustrated example, in the specific region, the upper end portion of the finger pinching prevention member 35 is provided with a hole forming portion having a hole 35a without providing the interfering portion 40. However, the present invention is not limited to this, and the interference portion 40 may be provided in this portion.

In addition, the second portion 40b may be omitted. When the rotation direction of the impeller 26c is counterclockwise in fig. 6, the positions of the interference portion 40 and a sub-interference portion 42 described later are arranged in left and right opposite positions. In this case, the second portion 40b may be omitted.

The finger pinch preventing member 35 is provided with a sub-obstructing portion 42 obstructing the flow of the air-conditioning air at a position other than the obstructing portion 40. The sub interference portion 42 is disposed at the second inclined surface portion 35 f. That is, the sub interfering portion 42 is disposed at a position separated from the first virtual plane P1 in the direction along the second virtual plane P2. On the right side (the other side) of the first imaginary plane P1, when the blower 26 is operated, the blades of the impeller 26c move to the opposite side of the a direction. However, since it is found that the air-conditioning air tends to flow along the lower surface of the ceiling portion 12f also on the right side of the first virtual plane P1, the sub interference portion 42 is provided on the a direction side of the second inclined surface portion 35f with respect to the second virtual plane P2. The area of the secondary interfering portion 42 is smaller than the area of the interfering portion 40, but larger than the areas of the gaps formed between the mutually adjacent blade portions 38 of the flow straightening member 33.

The blower 26 is closest to the lower surface of the ceiling portion 12f on the first virtual plane P1, and since the conditioned air is hard to be blown out near the first virtual plane P1 close to the lower surface of the ceiling portion 12f, the amount of the conditioned air blown out tends to increase on both sides thereof. In contrast, the provision of the auxiliary interference portion 42 can further reduce the variation in the amount of blow from the blower 26 in the circumferential direction. The sub interference portion 42 may be omitted.

In the environmental test apparatus 10 according to the first embodiment, if the blower 26 is operated, air circulates between the space in the air conditioning room R2 and the space in the test room R1 in the space in the casing 12. That is, in the air-conditioned room R2, the temperature is adjusted by the cooler 28 and the heater 30, thereby generating air-conditioned air. In the air-conditioned room R2, the conditioned air flows upward from below and is sucked by the blower 26, and the conditioned air passes through the first communication hole 23 of the partition member 16 and is blown out into the test room R1. At this time, the conditioned air flows upward (direction a) in the air conditioning room R2 and is sucked into the blower 26, and the blowing direction is also likely to be directed obliquely upward by this influence. Further, the blower 26 is set closer to the lower surface of the ceiling portion 12f than the other inner wall surfaces except the front surface of the partition member 16 among the inner wall surfaces constituting the test room R1. However, the presence of the interference portion 40 and the sub-interference portion 42 interferes with the airflow at the first inclined surface portion 37d and the second inclined surface portion 37e of the flow rectification member 33. Therefore, the air conditioning air mainly flows to the front surface portion 37c of the flow rectification member 33, and easily flows in the direction along the rotation shaft 26b of the blower 26. Further, the first inclined surface portion 37d of the flow regulating member 33 can increase the air volume in the region corresponding to the region on the opposite side of the second virtual plane P2 in the a direction. Therefore, in the laboratory R1, the temperature distribution in which the temperature at the position on the left side of the first virtual plane P1 and shifted to the a direction changes rapidly and the temperature at that position relatively increases during heating is suppressed from occurring.

As described above, in the first embodiment, the flow rectification member 33 adjusts the direction of the flow of the air-conditioning air on the blowing side of the blower 26 formed by the axial flow fan. On the other hand, an obstruction portion 40 that obstructs the flow of the air-conditioning air is provided on the discharge side of the blower 26. The interference portion 40 has a portion arranged in a specific region on the outlet side of the blower 26 in order to suppress temperature unevenness in the laboratory R1 that cannot be solved by adjusting the direction of the airflow only with the flow adjustment member 33. That is, the interference portion 40 includes a first portion 40a of the specific region disposed at a position shifted in the a direction from the second imaginary plane P2 on the left side of the first imaginary plane P1 in fig. 6. The flow of the air-conditioning air is blocked by the blocking portion 40, and the temperature unevenness in the laboratory R1 is suppressed. More specifically, since the rotation shaft 26b of the blower 26 is offset in the a direction from the central portion 21 of the partition member 16 forming the laboratory R1, if there is no interference portion 40, the conditioned air blown from the blower 26 easily flows along the lower surface of the ceiling portion 12f located in the direction offset in the a direction. Further, in the test room R1, the air volume of the conditioned air becomes larger in a specific region located on the a direction side of the second virtual plane P2 on the left side of the first virtual plane P1 in fig. 6. On the other hand, by providing the interference portion 40 having the first portion 40a, the increase in the volume of the conditioned air in the specific area can be suppressed, and as a result, the temperature unevenness in the laboratory R1 can be suppressed.

In the first embodiment, the interfering portion 40 is formed in a flat plate shape from the specific region to a position shifted in the direction opposite to the a direction with respect to the second virtual plane P2. Even if the interference portion 40 has only the first portion 40a disposed at a position deviated in the a direction from the second virtual plane P2, temperature unevenness in the test chamber R1 can be suppressed. On the other hand, in the case where the interference portion 40 includes the first portion 40a and the second portion 40b, the air volume in the specific region can be more effectively suppressed. Further, by making the interference portion 40 flat, the interference portion 40 can be realized by a simple member.

In the first embodiment, since the sub-interfering portion 42 is provided, it is possible to suppress the increase in the air volume of the conditioned air in the specific area and also suppress the increase in the air volume of the conditioned air in the area located on the opposite side of the specific area with respect to the first virtual plane P1. As a result, temperature unevenness in the laboratory R1 can be further suppressed.

In addition, in the present embodiment, since the finger pinch prevention member 35 is provided, the safety in the laboratory R1 can be ensured while allowing the passage of the conditioned air from the blower 26.

Further, since the interference portion 40 is provided in the finger pinching prevention member 35, an increase in the number of parts can be suppressed.

In the first embodiment, the flow rectification member 33 includes the frame portion 37 and the plurality of blade portions 38 connected to the frame portion 37 so as to be variable in direction, and therefore, the direction of the airflow can be adjusted by changing the direction of the blade portions 38. Therefore, by adjusting the direction of each blade portion 38 according to the installation environment of the flow straightening member 33, the temperature distribution in the laboratory R1 can be finely adjusted.

In the first embodiment, the blower 26 sucks the conditioned air flowing from below to above in the conditioned room R2 and blows the conditioned air into the test room R1. Therefore, if there is no obstacle 40, the blowing direction of the conditioned air from the conditioned room R2 may be affected by the flow direction of the conditioned air in the conditioned room R2. However, by effectively functioning the interference portion 40, temperature unevenness in the laboratory R1 can be suppressed. That is, since the blower 26 sucks the conditioned air flowing from below to above in the conditioned room R2 and blows the conditioned air into the test room R1, if there is no obstacle 40, the conditioned air tends to be blown obliquely upward in the specific area. However, the presence of the interference portion 40 can suppress the air-conditioning air from being blown obliquely upward. This can suppress temperature unevenness in the laboratory R1.

In the first embodiment, the finger pinch prevention member 35 is provided, but the finger pinch prevention member 35 may be omitted. In this case, the interference portion 40 may be provided in the rectifying member 33. That is, the interference portion 40 may be formed of a flat plate-like member disposed in an area corresponding to the specific area at the first inclined surface portion 37d of the frame portion 37 of the flow rectification member 33. In this case, the blade portions 38 may be omitted at the positions where the interference portions 40 are arranged. The secondary interfering portion 42 may be provided in the rectifying member 33 in the same manner as the interfering portion 40.

In addition, the interference portion 40 may be formed of a member separate from the rectifying member 33, as shown in fig. 7, for example, regardless of whether the finger pinching prevention member 35 is not provided or the finger pinching prevention member 35 is provided. That is, the interference portion 40 shown in fig. 7 is formed of a flat plate-like member parallel to the first inclined surface portion 37d of the flow rectification member 33, and is disposed on the opposite side of the fan 26 from the flow rectification member 33. At this time, the interference portion 40 is configured to interfere with the flow of a part of the air-conditioning air rectified by the rectifying member 33. The interference portion 40 may be disposed between the first inclined surface portion 37d of the flow rectification member 33 and the blower 26. At this time, the interference portion 40 is configured to interfere with the flow of a part of the air-conditioning air to be rectified by the rectifying member 33. In either case, the interference portion 40 does not differ in the point at which it interferes with the flow of a part of the air-conditioning air rectified by the rectifying member 33. The interference portion 40 may be attached to the rectifying member 33 or may be attached to the ceiling portion 12f of the case 12. In this case, the finger pinch prevention member 35 may be omitted.

In addition, the auxiliary interfering part 42 may be formed of a member separate from the rectifying member 33 regardless of whether the finger pinching prevention member 35 is not provided or the finger pinching prevention member 35 is provided. For example, the sub interfering portion 42 shown in fig. 7 is formed of a flat plate-like member parallel to the second inclined surface portion 37e of the flow rectification member 33. The auxiliary interfering portion 42 may be disposed on the opposite side of the fan 26 from the rectifying member 33, or may be disposed between the rectifying member 33 and the fan 26. That is, the sub-interference portion 42 may be configured to interfere with the flow of the part of the air-conditioning air rectified by the rectifying member 33, or may be configured to interfere with the flow of the part of the air-conditioning air to be rectified by the rectifying member 33. In either case, there is no difference in the point at which the sub-interfering portion 42 interferes with the flow of a part of the air-conditioning air rectified by the rectifying member 33. The secondary interfering portion 42 may be attached to the rectifying member 33 or may be attached to the ceiling portion 12f of the case 12.

As shown in fig. 8, the interfering portion 40 and the sub-interfering portion 42 may be provided on an interfering portion member 45 formed in the same shape as the finger pinch prevention member 35. The interference portion member 45 includes: a plurality of (4 in the drawing) columnar portions 45a arranged at intervals from each other; and a plurality of (2 in the drawing) beam-shaped portions 45b arranged at intervals from each other and bridging between the columnar portions 45 a. The central 2 columnar portions 45a are arranged at intervals of a degree of housing most of the impeller 26c of the blower 26.

The beam-like portion 45b is provided with an attachment portion 45c, and the attachment portion 45c is formed with an insertion hole through which a fastener for fixing the interfering portion member 45 is inserted.

The beam-like portion 45b is bent at two points on the way. Accordingly, the interfering member 45 has a front surface portion 45d, a first inclined surface portion 45e, and a second inclined surface portion 45 f. The front surface portion 45d is disposed in parallel with the front surface portion 37c of the rectifying member 33, the first inclined surface portion 45e is disposed in parallel with the first inclined surface portion 37d of the rectifying member 33, and the second inclined surface portion 45f is disposed in parallel with the second inclined surface portion 37e of the rectifying member 33. The front surface portion 45d extends in a direction perpendicular to the rotation shaft 26b of the blower 26. The first inclined surface portion 45e is connected to one end of the front surface portion 45d, and extends in a direction inclined at a predetermined angle with respect to the front surface portion 45 d. The second inclined surface portion 45f is connected to the other end portion of the front surface portion 45d, and extends in a direction inclined at a predetermined angle to the front surface portion 45d on the opposite side of the first inclined surface portion 45 e.

The interference portion 40 is flat and disposed to fill a part of the gap between the columnar portions 45a constituting the first inclined surface portion 45 e. The sub-interfering portion 42 is flat and disposed to fill a part of the gap between the columnar portions 45a constituting the second inclined surface portion 45 f. The obstructing portion member 45 may be disposed between the fan 26 and the rectifying member 33, or may be disposed on the opposite side (near side) of the fan 26 with respect to the rectifying member 33.

In the first embodiment, the blower 26 is disposed at a position offset upward from the center portion 21 of the partition member 16, but the present invention is not limited thereto. For example, the blower 26 may be disposed at a position offset downward from the center portion 21 of the partition member 16. At this time, the blower 26 is disposed at a position close to the upper surface of the bottom surface portion 12 e. Therefore, the interference portion 40 is disposed on the right side of the first imaginary plane P1 in fig. 6, and the sub-interference portion 42 is disposed on the left side. However, if the rotation direction of the blower 26 is counterclockwise in fig. 6, the interference portion 40 is disposed on the left side and the sub-interference portion 42 is disposed on the right side.

The blower 26 may be disposed at a position offset to the left (or right) side from the center portion 21 of the partition member 16. In this case, the a direction is the left direction (or the right direction), the first imaginary plane P1 is defined as a plane that extends horizontally including the rotation axis 26b, and the second imaginary plane P2 is a plane that extends vertically. At this time, the interference portion 40 is disposed on the left side (or the right side) with respect to the second virtual plane P2 on the upper side or the lower side with respect to the first virtual plane P1 as viewed in the direction of the rotation axis 26 b.

In the first embodiment, the partition member 16 partitions the space in the housing 12 in the front-rear direction, but the present invention is not limited to this. For example, the partition member 16 may be configured to partition the space in the housing 12 in the left-right direction. Alternatively, the partition member 16 may be configured to vertically partition the space in the housing 12.

In a case where the space inside the casing 12 is partitioned in the left-right direction by the partition member 16, for example, the test room R1 is located on the left side (or right side) of the air-conditioning room R2. In this case, the blower 26 may be disposed at a position offset upward from the center portion 21 of the partition member 16, for example. At this time. The a direction is an up direction. Therefore, the first virtual plane P1 is defined as a plane spreading in the vertical direction, and the second virtual plane P2 is defined as a plane spreading in the horizontal direction. The interference portion 40 includes a portion that is disposed at a position shifted in the upward direction from the second virtual plane P2 on the near side or the deep side of the first virtual plane P1 in accordance with the rotation direction of the impeller 26 c.

In the case where the space in the housing 12 is partitioned in the left-right direction by the partition member 16, the blower 26 may be disposed at a position shifted toward the depth side (or the front side) with respect to the central portion 21 of the partition member 16. At this time. The a direction is a depth side (or front side). At this time, the first virtual plane P1 is defined as a plane spreading in the horizontal direction, and the second virtual plane P2 is defined as a plane spreading in the vertical direction. At this time, the interference portion 40 includes a portion which is arranged at a position deviated to the depth side (or the front side) with respect to the second imaginary plane P2 on the upper side or the lower side of the first imaginary plane P1 depending on the rotation direction of the impeller 26 c.

When the space in the casing 12 is partitioned in the vertical direction by the partition member 16, for example, the test room R1 is located below (or above) the air-conditioning room R2. In this case, the blower 26 is disposed at a position offset to the depth side, front side, left side, and right side with respect to the central portion 21 of the partition member 16. At this time, the arrangement position of the interference portion 40 is set according to the a direction and the rotation direction of the impeller 26 c.

(second embodiment)

As shown in fig. 9, the second embodiment is a heat treatment apparatus (chamber) 50 for performing a heat treatment on an object to be treated W3 by placing the object to be treated (workpiece) W3 disposed in a heat treatment chamber (workpiece chamber) R3 in a predetermined temperature environment. Here, the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

In the heat treatment apparatus 50 according to the second embodiment, the partition member 16 is provided in the case 12 to divide the space in the case 12 into two spaces, similarly to the configuration of the environmental test apparatus 10 according to the first embodiment. The left side wall 12b, the right side wall 12c, the bottom portion 12e, and the top portion 12f form a heat treatment chamber R3 for accommodating the object W3 at a position forward of the partition member 16, the door body 12a, and the partition member 16. That is, the heat treatment chamber R3 has the same structure as the test chamber R1 of the first embodiment. Therefore, in the description of the first embodiment, the test chamber R1 may be replaced with the heat treatment chamber R3. On the other hand, the left side wall 12b, the right side wall 12c, the bottom portion 12e, and the top portion 12f are positioned rearward with respect to the partition member 16, and the rear side wall 12d and the partition member 16 form an air conditioning chamber R2 in which a device for adjusting the temperature in the heat treatment chamber R3 is housed. The air-conditioning room R2 has the same structure as the air-conditioning room R2 of the first embodiment. In the heat treatment apparatus 50, the cooler 28 may be omitted. At this time, the temperature of the air in the air-conditioned room R2 is adjusted by being heated by the heater 30, and becomes air-conditioned air.

In the second embodiment, the rectifying member 33 and the finger pinching prevention member 35 having the same configurations as the rectifying member 33 and the finger pinching prevention member 35 of the first embodiment are also arranged. In the second embodiment, the interference portion 40 and the sub-interference portion 42 are also provided as in the first embodiment.

In the second embodiment, the finger pinch prevention member 35 is provided, but the finger pinch prevention member 35 may be omitted. At this time, the interference portion 40 may be provided at the rectifying member 33. That is, the interference portion 40 may be formed of a flat plate-like member disposed in an area corresponding to the specific area in the first inclined surface portion 37d of the flow rectification member 33. In this case, the blade portions 38 are omitted at the positions where the interference portions 40 are arranged. The secondary interfering portion 42 may be provided in the rectifying member 33 as in the interfering portion 40.

In the second embodiment, the interference portion 40 may be formed of a member separate from the rectifying member 33, as in the interference portion 40 shown in fig. 7, regardless of whether the finger pinch preventing member 35 is not provided or the finger pinch preventing member 35 is provided. Further, the interference portion 40 may be provided in the interference portion member 45 shown in fig. 8. The interference portion 40 may be disposed on the opposite side of the fan 26 from the rectifying member 33, or may be disposed between the first inclined surface portion 37d of the rectifying member 33 and the fan 26. The interference portion 40 may be attached to the rectifying member 33 or may be attached to the ceiling portion 12f of the case 12.

In the second embodiment, the sub-interfering portion 42 may be formed of a member separate from the rectifying member 33, as in the case of the sub-interfering portion 42 shown in fig. 7, regardless of whether the finger pinch preventing member 35 is not provided or the finger pinch preventing member 35 is provided. The auxiliary interfering portion 42 may be provided in an interfering portion member 45 shown in fig. 8. The auxiliary obstructing portion 42 may be disposed on the opposite side of the fan 26 from the rectifying member 33, or may be disposed between the rectifying member 33 and the fan 26. The secondary interfering portion 42 may be attached to the rectifying member 33 or may be attached to the ceiling portion 12f of the case 12.

In the second embodiment, the blower 26 is disposed at a position offset upward with respect to the central portion 21 of the partition member 16, but the present invention is not limited to this. For example, the blower 26 may be disposed at a position offset downward with respect to the central portion 21 of the partition member 16. At this time, the interference portion 40 is disposed on the right side of the first virtual plane P1 in fig. 6, and the sub-interference portion 42 is disposed on the left side. However, if the rotation direction of the blower 26 is counterclockwise in fig. 6, the interference portion 40 is disposed on the left side and the sub-interference portion 42 is disposed on the right side.

The blower 26 may be disposed at a position offset to the left (or right) with respect to the central portion 21 of the partition member 16. In this case, the first virtual plane P1 is defined as a plane that includes the rotation axis 26b and extends in the horizontal direction, and the second virtual plane P2 is defined as a plane that extends in the vertical direction. At this time, the interference portion 40 is located above or below the first virtual plane P1, and is located on the left side (or right side) with respect to the second virtual plane P2 when viewed along the rotation axis 26 b.

In the second embodiment, the partition member 16 partitions the space in the housing 12 in the front-rear direction, but the present invention is not limited to this. For example, the partition member 16 may be a structure that partitions the space inside the housing 12 in the left-right direction. Alternatively, the partition member 16 may be a structure that partitions the space inside the housing 12 in the up-down direction.

In the case where the space inside the casing 12 is partitioned in the left-right direction by the partition member 16, for example, the heat treatment chamber R3 is located on the left side (or right side) of the air conditioning chamber R2. In this case, the blower 26 may be disposed at a position offset upward from the center portion 21 of the partition member 16, for example. At this time. The a direction is an up direction. Therefore, the first virtual plane P1 is defined as a plane spreading in the vertical direction, and the second virtual plane P2 is defined as a plane spreading in the horizontal direction. The interference portion 40 includes a portion that is disposed at a position shifted in the upward direction from the second virtual plane P2 on the near side or the deep side of the first virtual plane P1 in accordance with the rotation direction of the impeller 26 c.

In the case where the space in the housing 12 is partitioned in the left-right direction by the partition member 16, the blower 26 may be disposed at a position shifted toward the depth side (or the front side) with respect to the central portion 21 of the partition member 16. At this time. The direction a is the depth side or the front side. At this time, the first virtual plane P1 is defined as a plane spreading in the horizontal direction, and the second virtual plane P2 is defined as a plane spreading in the vertical direction. At this time, the interference portion 40 includes a portion which is arranged at a position deviated to the depth side (or the front side) with respect to the second imaginary plane P2 on the upper side or the lower side of the first imaginary plane P1 depending on the rotation direction of the impeller 26 c.

In the case where the space inside the casing 12 is partitioned in the vertical direction by the partition member 16, for example, the heat treatment chamber R3 is located on the lower side (or the upper side) of the air conditioning chamber R2. In this case, the blower 26 is disposed at a position offset to the depth side, front side, left side, and right side with respect to the central portion 21 of the partition member 16. At this time, the arrangement position of the interference portion 40 is set according to the a direction and the rotation direction of the impeller 26 c.

Other structures, operations, and effects are not described, but are similar to those of the first embodiment.

Here, the embodiments are described in general.

(1) The environmental test apparatus according to the first embodiment includes: a blower that is formed of an axial fan having a rotary shaft and blows air-conditioned air into a test chamber, the rotary shaft being disposed at a position offset in a predetermined direction from a central portion of an inner wall surface forming the test chamber; a flow regulating member that regulates a direction of an air flow of the air-conditioning air on a discharge side of the blower; and an interference portion that interferes with the flow of the air-conditioning air on the outlet side of the blower, wherein the interference portion has portions arranged at: the blade of the axial fan is moved in the predetermined direction with respect to a first virtual plane including the rotary shaft and extending in the predetermined direction, and is positioned to be deviated in the predetermined direction with respect to a second virtual plane including the rotary shaft and perpendicular to the first virtual plane.

In the above-described environment testing apparatus, the flow regulating member regulates the direction of the air flow of the air-conditioning air on the blowing side of the blower formed by the axial flow fan. On the other hand, an obstructing portion obstructing the flow of the air-conditioning air is also provided on the blowing side of the blower. The interference portion has a portion arranged in a specific region on the blowing side of the blower in order to suppress temperature unevenness in the test room that cannot be eliminated by adjusting the direction of the airflow only with the flow adjusting member. Namely, the interference portion has the following portions: the blade is disposed at a position deviated in the predetermined direction, that is, a position of a specific region, with respect to a second virtual plane perpendicular to the first virtual plane, on a side where the blade moves in the predetermined direction when the blower is operated with respect to a first virtual plane including a rotation axis of the blower and extending in the predetermined direction. The temperature unevenness in the test room is suppressed by blocking the air-conditioned air by the blocking portion. More specifically, since the rotation axis of the blower is offset in a predetermined direction from the center of the inner wall surface forming the test chamber, the conditioned air blown from the blower easily flows along the inner surface of the test chamber located in the direction offset in the predetermined direction if there is no obstacle. In the test room, the volume of the conditioned air is increased on the side where the blades of the axial flow fan move in the predetermined direction with respect to a first virtual plane including the rotary shaft and extending in the predetermined direction, and in a specific region on the side of the predetermined direction with respect to a second virtual plane including the rotary shaft and perpendicular to the first virtual plane. Therefore, by providing the interfering portion having the portion arranged in the specific area, the increase in the volume of the conditioned air in the specific area is suppressed, and as a result, the temperature variation in the test room can be suppressed.

(2) The interference portion may be formed in a flat plate shape from a position deviated in the predetermined direction from the second virtual plane to a position deviated in a direction opposite to the predetermined direction from the second virtual plane.

Even if the interference portion is disposed only at a position deviated from the second virtual plane in the predetermined direction and the interference portion is not disposed on the opposite side of the predetermined direction, temperature unevenness in the test chamber can be suppressed. On the other hand, when the interference portion is provided in a range from a position deviated from the second virtual plane in the predetermined direction to a position deviated from the second virtual plane in the opposite direction to the predetermined direction, the air volume in the specific region can be more effectively suppressed. Further, the interference portion can be realized by a simple member by forming the interference portion in a flat plate shape.

(3) The environmental test apparatus may further include: and a secondary interference portion that is disposed on a side of the first virtual plane where the blades of the axial flow fan move in a direction opposite to the predetermined direction when the blower is operated, and that is offset in the predetermined direction with respect to the second virtual plane.

In this configuration, it is possible to suppress not only an increase in the volume of conditioned air in the specific area but also an increase in the volume of conditioned air in an area located on the opposite side of the specific area with respect to the first virtual plane. As a result, temperature unevenness in the test chamber can be further suppressed.

(4) The environmental test apparatus may further include: a finger pinch prevention member formed of a member having a plurality of holes to prevent fingers from entering the blower.

In this configuration, the safety of the laboratory can be ensured while allowing the passage of the air-conditioned air from the blower.

(5) The interference portion may also be provided on the finger pinch prevention member. In this configuration, an increase in the number of parts can be suppressed.

(6) The rectifying member may include a frame portion and a plurality of blade portions that are arranged at intervals from each other and have both ends connected to the frame portion so as to be capable of changing the direction.

In this configuration, the direction of the airflow can be adjusted by changing the direction of the blade portions. Therefore, the direction of each blade portion is adjusted according to the installation environment of the flow regulating member, and the temperature distribution in the test room can be finely adjusted.

(7) The environmental test apparatus may further include: and an air conditioning chamber configured to allow air in the test chamber to flow therein by operation of the blower and to adjust the air to be air-conditioned air, wherein the rotary shaft of the blower is disposed at a position displaced from the center portion in an upward direction that is the predetermined direction, and the blower sucks in air-conditioned air flowing from below in the air conditioning chamber and blows the air out into the test chamber.

In this structure, the blower sucks in the conditioned air flowing from below to above in the air-conditioned room and blows the conditioned air into the test room. Therefore, if there is no obstruction, the blowing direction of the conditioned air from the conditioned room may be affected by the flow direction of the conditioned air in the conditioned room. However, by effectively functioning the interference portion, temperature unevenness in the test chamber can be suppressed. That is, since the blower sucks in the conditioned air flowing from below to above in the air-conditioned room and blows the conditioned air into the test room, if there is no obstacle, the conditioned air tends to be blown obliquely upward. However, the presence of the interference portion can suppress the air-conditioning air from being blown obliquely upward. This makes it possible to suppress temperature components in the test chamber.

(8) The heat treatment apparatus of the second embodiment includes: a blower formed of an axial fan having a rotary shaft disposed at a position deviated in a predetermined direction from a center of an inner wall surface forming the heat treatment chamber, and blowing air-conditioned air into the heat treatment chamber; a flow regulating member that regulates a direction of an air flow of the air-conditioning air on a discharge side of the blower; and an interference portion that interferes with the flow of the air-conditioning air on the outlet side of the blower, wherein the interference portion has portions arranged at: the blade of the axial fan is moved in the predetermined direction with respect to a first virtual plane including the rotary shaft and extending in the predetermined direction, and is positioned to be deviated in the predetermined direction with respect to a second virtual plane including the rotary shaft and perpendicular to the first virtual plane.

In the heat treatment apparatus, the flow regulating member regulates the direction of the air flow of the air-conditioning air on the blowing side of the blower formed by the axial flow fan. On the other hand, an obstructing portion obstructing the flow of the air-conditioning air is also provided on the blowing side of the blower. The obstruction portion has a portion arranged in a specific region on the blowing side of the blower in order to suppress temperature unevenness in the heat treatment chamber that cannot be eliminated by adjusting the direction of the air flow only by the flow adjusting member. Namely, the interference portion has the following portions: the blade is disposed at a position deviated in the predetermined direction, that is, a position of a specific region, with respect to a second virtual plane perpendicular to the first virtual plane, on a side where the blade moves in the predetermined direction when the blower is operated with respect to a first virtual plane including a rotation axis of the blower and extending in the predetermined direction. The temperature unevenness in the heat treatment chamber is suppressed by blocking the air-conditioning air by the blocking portion. More specifically, since the rotation axis of the blower is offset in a predetermined direction from the center of the inner wall surface forming the heat treatment chamber, if there is no obstacle, the conditioned air blown from the blower easily flows along the inner surface of the heat treatment chamber located in the direction offset in the predetermined direction. In the heat treatment chamber, on a side where the blades of the axial flow fan move in the predetermined direction with respect to a first virtual plane including the rotary shaft and extending in the predetermined direction, the air volume of the air-conditioning air becomes larger in a specific region located on the side of the predetermined direction with respect to a second virtual plane including the rotary shaft and perpendicular to the first virtual plane. Therefore, by providing the interfering portion having the portion disposed in the specific area, the increase in the air volume of the air-conditioned air in the specific area is suppressed, and as a result, the temperature unevenness in the heat treatment chamber can be suppressed.

(9) The interference portion may be formed in a flat plate shape from a position deviated in the predetermined direction from the second virtual plane to a position deviated in a direction opposite to the predetermined direction from the second virtual plane.

(10) The heat treatment apparatus may further include: and a secondary interference portion that is disposed on a side of the first virtual plane where the blades of the axial flow fan move in a direction opposite to the predetermined direction when the blower is operated, and that is offset in the predetermined direction with respect to the second virtual plane.

(11) The heat treatment apparatus may further include: a finger pinch prevention member formed of a member having a plurality of holes to prevent fingers from entering the blower.

(12) The interference portion may also be provided on the finger pinch prevention member.

(13) The rectifying member may include a frame portion and a plurality of blade portions that are arranged at intervals from each other and have both ends connected to the frame portion so as to be capable of changing the direction.

(14) The heat treatment apparatus may further include: and an air conditioning chamber configured to allow air in the heat treatment chamber to flow therein by operation of the blower and to adjust the air to be air-conditioned air, wherein the rotary shaft of the blower is disposed at a position offset from the center portion in an upward direction that is the predetermined direction, and the blower sucks in air-conditioned air flowing from below in the air conditioning chamber and blows the air out into the heat treatment chamber.

As described above, in the environmental test apparatus or the heat treatment apparatus in which the blower is disposed at a position deviated from the center position of the inner wall surface of the test chamber or the heat treatment chamber, it is possible to suppress the occurrence of the temperature distribution in the test chamber or the heat treatment chamber.

Claims

1. An environmental test device, characterized by comprising:

a blower that is formed of an axial fan having a rotary shaft and blows air-conditioned air into a test chamber, the rotary shaft being disposed at a position offset in a predetermined direction from a central portion of an inner wall surface forming the test chamber;

a flow regulating member that regulates a direction of an air flow of the air-conditioning air on a discharge side of the blower; and

an interference portion that interferes with the flow of the air-conditioning air on the blowing side of the blower, wherein,

the interference portion has portions arranged at the following positions: the blade of the axial fan is moved in the predetermined direction with respect to a first virtual plane including the rotary shaft and extending in the predetermined direction, and is positioned to be deviated in the predetermined direction with respect to a second virtual plane including the rotary shaft and perpendicular to the first virtual plane.

2. The environmental test apparatus of claim 1,

the interference portion is formed in a flat plate shape from a position deviated in the predetermined direction from the second virtual plane to a position deviated in a direction opposite to the predetermined direction from the second virtual plane.

3. The environmental test apparatus of claim 1, further comprising:

and a secondary interference portion that is disposed on a side of the first virtual plane where the blades of the axial flow fan move in a direction opposite to the predetermined direction when the blower is operated, and that is offset in the predetermined direction with respect to the second virtual plane.

4. The environmental test apparatus of claim 1, further comprising:

a finger pinch prevention member formed of a member having a plurality of holes to prevent fingers from entering the blower.

5. The environmental test apparatus of claim 4,

the interference portion is disposed on the finger anti-pinch member.

6. The environmental test apparatus according to any one of claims 1 to 5,

the rectifying member includes a frame portion and a plurality of blade portions that are arranged at intervals from each other and have both ends connected to the frame portion so as to be capable of changing a direction.

7. The environmental test apparatus according to any one of claims 1 to 5, characterized by further comprising:

an air conditioning chamber for making air in the test chamber flow in by the operation of the blower and adjusting the air to be air-conditioned air,

the rotary shaft of the blower is disposed at a position deviated from the central portion in an upper direction which is the predetermined direction,

the air feeder sucks in air conditioning air flowing from bottom to top in the air conditioning chamber and blows the air out of the test chamber.

8. A heat treatment apparatus characterized by comprising:

a blower formed of an axial fan having a rotary shaft disposed at a position deviated in a predetermined direction from a center of an inner wall surface forming the heat treatment chamber, and blowing air-conditioned air into the heat treatment chamber;

9. The thermal processing device of claim 8,

10. The thermal processing device of claim 8, further comprising:

11. The thermal processing device of claim 8, further comprising:

12. The thermal processing device of claim 11,

the interference portion is disposed on the finger anti-pinch member.

13. The thermal processing device according to any one of claims 8 to 12,

14. The heat treatment apparatus according to any one of claims 8 to 12, characterized by further comprising:

an air conditioning chamber for supplying air in the heat treatment chamber by operation of the blower and adjusting the air to be air-conditioned air,

the blower sucks in air-conditioning air flowing from the bottom to the top in the air-conditioning chamber and blows the air out of the heat treatment chamber.