阅读说明：本技术 一种高低温试验箱 (High-low temperature test box ) 是由 周新波 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种高低温试验箱,包括：试验箱主体；设置于所述试验箱主体内的气流调节装置,所述气流调节装置包括多个外壁,多个所述外壁围成用于容纳被测物的腔体；多个所述外壁中的至少一个为具有供气流进入所述腔体的开口结构的气流调节板,所述试验箱主体内的气流经过所述气流调节板的开口结构进入所述腔体内。本发明提供的高低温试验箱,由于气流调节装置设置在试验箱主体内,通过热传导的作用,使得腔体内的温度与试验箱主体内(气流调节装置外)的温度大致一样,不会影响被测物的周围温度；并且,通过气流调节板的开口结构,能够起到调节到达被测物的气流速度,以便于依据试验标准进行调节,满足环境试验标准关于气流速度参数的要求。(The invention discloses a high-low temperature test chamber, which comprises: a test box main body; the air flow adjusting device is arranged in the test box main body and comprises a plurality of outer walls, and a cavity for accommodating a measured object is formed by surrounding the outer walls; a plurality of at least one in the outer wall is for having the air feed stream and entering the air flow adjusting plate of the open structure of cavity, the air current in the test box main part passes through air flow adjusting plate's open structure gets into in the cavity. According to the high-low temperature test box provided by the invention, the air flow adjusting device is arranged in the test box main body, so that the temperature in the cavity is approximately the same as the temperature in the test box main body (outside the air flow adjusting device) through the action of heat conduction, and the ambient temperature of a measured object cannot be influenced; and moreover, the air flow speed of the object to be measured can be adjusted through the opening structure of the air flow adjusting plate, so that the adjustment can be performed according to the test standard, and the requirements of the environmental test standard on the air flow speed parameters are met.)

1. A high-low temperature test chamber, comprising:

a test box main body;

the air flow adjusting device is arranged in the test box main body and comprises a plurality of outer walls, and a cavity for accommodating a measured object is formed by surrounding the outer walls; a plurality of at least one in the outer wall is for having the air feed stream and entering the air flow adjusting plate of the open structure of cavity, the air current in the test box main part passes through air flow adjusting plate's open structure gets into in the cavity.

2. The high-low temperature test chamber as claimed in claim 1, wherein the air flow adjusting device further comprises a box body frame, and a plurality of the outer walls are detachably mounted on the box body frame.

3. High-low temperature test chamber according to claim 2, characterized in that a plurality of said external walls have a first external wall (1) facing the air outlet, said first external wall (1) being a closed panel without an opening.

4. The high-low temperature test chamber as claimed in claim 3, wherein the air flow regulating device is a rectangular parallelepiped;

the plurality of outer walls comprise the first outer wall (1), the second outer wall (2), a first side wall (3), a second side wall (4) and a top wall (5);

the second outer wall (2) is arranged opposite to the first outer wall (1); the first side wall (3) and the second side wall (4) are arranged oppositely and connected with the first outer wall (1) and the second outer wall (2).

5. The high-low temperature test chamber as claimed in claim 4, wherein the bottom (6) of the gas flow regulating device is in contact with the inner bottom surface of the test chamber main body.

6. High-low temperature test chamber according to claim 4, wherein the first side wall (3) and the second side wall (4) are the air flow regulating plates.

7. A high-low temperature test chamber as claimed in claim 4, wherein the second outer wall (2) has a test hole through which a test wire is passed.

8. The high-low temperature test chamber as claimed in claim 2, wherein the opening structure includes a plurality of openings uniformly distributed on the air flow adjustment plate;

or the opening structure is a plurality of transverse strip gaps arranged along the transverse direction of the airflow adjusting plate, and the plurality of transverse strip gaps are uniformly distributed along the longitudinal direction of the airflow adjusting plate;

or, the open structure is a plurality of edges the vertical bar breach of the vertical setting of air adjustment board is a plurality of the vertical bar breach is followed the horizontal evenly distributed of air adjustment board.

9. The high-low temperature test chamber as claimed in claim 2, wherein the box body framework is provided with an insertion groove;

the outer wall can be inserted into the insertion groove.

10. The high-low temperature test chamber according to any one of claims 1 to 9,

V₁≤V₂/5；

wherein the content of the first and second substances,

V₁is the volume of the gas flow regulating device;

V₂is the volume of the high-low temperature test chamber.

Technical Field

The invention relates to the technical field of test equipment, in particular to a high-low temperature test box.

Background

The current high-low temperature test box is a common air box, namely, the purpose of controlling the temperature is achieved by supplying air into the main body of the test box. And the main body of the test chamber can not artificially control the air flow speed. For example, the air flow velocity of the air outlet of the test box can reach 4m/s, the air flow velocity of the central test point is 0.5-1 m/s, and the air flow velocity of the four corner test points is 0.5 m/s. The air flow speed of the air outlet cannot meet the requirement that the relevant test of the environmental test standard GB-T2423 is less than 0.2 m/s.

Therefore, how to adjust the air flow speed to meet the requirements of the environmental test standard on the air flow speed parameters is an urgent problem to be solved by the technical personnel.

Disclosure of Invention

In view of the above, the present invention provides a high and low temperature test chamber to adjust the air flow speed, so as to meet the requirements of the environmental test standards on the air flow speed parameters.

In order to achieve the purpose, the invention provides the following technical scheme:

a high-low temperature test chamber comprising:

a test box main body;

the air flow adjusting device is arranged in the test box main body and comprises a plurality of outer walls, and a cavity for accommodating a measured object is formed by surrounding the outer walls; a plurality of at least one in the outer wall is for having the air feed stream and entering the air flow adjusting plate of the open structure of cavity, the air current in the test box main part passes through air flow adjusting plate's open structure gets into in the cavity.

Optionally, in the above-mentioned high low temperature test box, the air flow adjusting device further includes a box body skeleton, and is a plurality of the outer wall detachably install in on the box body skeleton.

Optionally, in the high and low temperature test box, a first outer wall facing the air outlet is arranged in the plurality of outer walls, and the first outer wall is a closed panel without an opening.

Optionally, in the high-low temperature test box, the airflow adjusting device is a cuboid;

the plurality of outer walls comprise the first outer wall, a second outer wall, a first side wall, a second side wall and a top wall;

the second outer wall is arranged opposite to the first outer wall; the first side wall and the second side wall are oppositely arranged and connected with the first outer wall and the second outer wall.

Optionally, in the high and low temperature test chamber, the bottom of the air flow adjusting device is in contact with the inner bottom surface of the test chamber main body.

Optionally, in the high and low temperature test box, the first side wall and the second side wall are the airflow adjusting plate.

Optionally, in the high and low temperature test box, the second outer wall has a test hole for the test wire to penetrate.

Optionally, in the high and low temperature test box, the opening structure includes a plurality of openings uniformly distributed on the airflow adjusting plate;

or the opening structure is a plurality of transverse strip gaps arranged along the transverse direction of the airflow adjusting plate, and the plurality of transverse strip gaps are uniformly distributed along the longitudinal direction of the airflow adjusting plate;

or, the open structure is a plurality of edges the vertical bar breach of the vertical setting of air adjustment board is a plurality of the vertical bar breach is followed the horizontal evenly distributed of air adjustment board.

Optionally, in the high-low temperature test box, the box body framework is provided with an insertion groove;

the outer wall can be inserted into the insertion groove.

Optionally, in the high and low temperature test chamber, V₁≤V₂/5；

Wherein the content of the first and second substances,

V₁is the volume of the gas flow regulating device;

V₂is the volume of the high-low temperature test chamber.

According to the technical scheme, the airflow adjusting device is arranged in the test box main body, so that airflow in the test box main body enters the cavity through the opening structure of the airflow adjusting plate and then contacts with the measured object in the cavity. Because the air flow regulating device is arranged in the test box main body, the temperature in the cavity is approximately the same as the temperature in the test box main body (outside the air flow regulating device) through the action of heat conduction, and the ambient temperature of a measured object cannot be influenced; and moreover, the air flow speed of the object to be measured can be adjusted through the opening structure of the air flow adjusting plate, so that the adjustment can be performed according to the test standard, and the requirements of the environmental test standard on the air flow speed parameters are met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an air flow adjusting device of a high-low temperature test chamber according to an embodiment of the present invention.

Detailed Description

The invention discloses a high-low temperature test chamber, which is used for providing refrigerating capacity and ensuring that a system does not obviously reduce the generating capacity because of providing extra refrigeration.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a high-low temperature test chamber, which includes a test chamber main body and an air flow adjusting device disposed in the test chamber main body. The airflow adjusting device comprises a plurality of outer walls, and a cavity for accommodating the measured object is formed by the plurality of outer walls; at least one of the outer walls is an air flow adjusting plate with an opening structure for air flow to enter the cavity, and air flow in the test box main body enters the cavity through the opening structure of the air flow adjusting plate.

According to the high-low temperature test box provided by the embodiment of the invention, the airflow adjusting device is arranged in the test box main body, so that airflow in the test box main body enters the cavity through the opening structure of the airflow adjusting plate and then contacts with a measured object contained in the cavity. Because the air flow regulating device is arranged in the test box main body, the temperature in the cavity is approximately the same as the temperature in the test box main body (outside the air flow regulating device) through the action of heat conduction, and the ambient temperature of a measured object cannot be influenced; and moreover, the air flow speed of the object to be measured can be adjusted through the opening structure of the air flow adjusting plate, so that the adjustment can be performed according to the test standard, and the requirements of the environmental test standard on the air flow speed parameters are met.

In order to improve the commonality, the air flow adjusting device further comprises a box body framework, and a plurality of outer walls are detachably arranged on the box body framework. The outer walls are detachably arranged on the box body framework, so that the position of the airflow adjusting plate on the airflow adjusting device is adjustable; and, can set up the airflow adjustment board of multiple structure for opening structure on the multiple airflow adjustment board is different, so that carry out the selection of airflow adjustment board according to experimental standard, install suitable airflow adjustment board on airflow adjustment device.

In this embodiment, the plurality of outer walls have a first outer wall 1 facing the air outlet, and the first outer wall 1 is a closed panel without an opening. Through the arrangement, the phenomenon that the airflow flowing into the test box main body from the air outlet directly enters the cavity through the opening structure of the airflow adjusting plate is avoided, and the airflow impact on the measured object is reduced.

As shown in fig. 1, the air flow adjusting device in the present embodiment is a rectangular parallelepiped; the plurality of outer walls comprise a first outer wall 1, a second outer wall 2, a first side wall 3, a second side wall 4 and a top wall 5; the second outer wall 2 is arranged opposite to the first outer wall 1; the first side wall 3 is disposed opposite to the second side wall 4 and connects the first outer wall 1 and the second outer wall 2. The design can facilitate the processing of the airflow adjusting device and the volume design of the cavity of the airflow adjusting device. Of course, the air flow adjusting device may also be configured as a cylinder structure, a cone structure, or a triangular prism structure, etc., which are not described in detail herein and are all within the protection scope.

In order to facilitate the placement of the object to be tested in the chamber and also simplify the structure of the air flow regulating device, it is preferable that the bottom 6 of the air flow regulating device is in contact with the inner bottom surface of the test chamber main body. In the actual test process, the measured object is placed on the inner bottom surface of the test box main body, and then the assembled air flow adjusting device is buckled on the measured object through the bottom 6 (bottom opening) of the air flow adjusting device, so that the measured object is located in the cavity of the air flow adjusting device. The bottom surface of the air flow adjusting device can be set to be a closed panel, and a measured object is placed in the cavity through the detachable connection of the top surface or the outer side wall (the first outer wall 1, the second outer wall 2, the first side wall 3 and the second side wall 4) of the air flow adjusting device and the box body framework.

In this embodiment, the first sidewall 3 and the second sidewall 4 are airflow adjusting plates. Through the arrangement, the airflow flowing into the test box main body from the air outlet enters and exits the cavity through the first side wall 3 and the second side wall 4, and the design of the airflow adjusting device is facilitated. In this embodiment, the first side wall 3 may be a face facing the operator, and the second side wall 4 may be a face facing away from the operator. The top wall 5 is preferably a closure panel.

Further, the second outer wall 2 has a test hole through which the test wire penetrates. Of course, it is also possible to thread the test wire from the bottom 6 of the air flow regulating device into the cavity of the air flow regulating device.

In a first embodiment, the flow-regulating plate has a plurality of uniformly distributed openings. That is, the opening structure includes a plurality of openings uniformly distributed on the airflow adjusting plate. Wherein, the opening is preferably a round hole, and the diameter of the round hole is preferably 1cm +/-0.1 cm. Of course, hexagonal holes (honeycomb holes), elliptical holes, triangular holes, or the like may be provided.

In a second embodiment, the airflow adjusting plate is provided with a plurality of cross bar notches arranged along the transverse direction of the airflow adjusting plate, and the plurality of cross bar notches are uniformly distributed along the longitudinal direction of the airflow adjusting plate. That is, the open structure is a plurality of horizontal bar breach that sets up along the air current regulating plate's transversely, and a plurality of horizontal bar breach are along the vertical evenly distributed of air current regulating plate.

Preferably, the length of the cross bar notch is approximately equal to the transverse length of the air flow adjusting plate, so that the edges of two sides of the air flow adjusting plate are provided with a certain connecting structure, the length of the cross bar notch is less than the transverse length of the air flow adjusting plate, the air flow adjusting plate is conveniently arranged into a whole plate, and the assembly is convenient.

In a third embodiment, the airflow adjusting plate is provided with a plurality of vertical bar notches arranged along the longitudinal direction of the airflow adjusting plate, and the plurality of vertical bar notches are uniformly distributed along the transverse direction of the airflow adjusting plate. That is, the open structure is a plurality of vertical bar gaps arranged along the longitudinal direction of the airflow adjusting plate, and the plurality of vertical bar gaps are uniformly distributed along the transverse direction of the airflow adjusting plate.

Preferably, the length of the vertical bar notch is approximately equal to the longitudinal length of the air flow adjusting plate, so that the upper edge and the lower edge of the air flow adjusting plate are provided with a certain connecting structure, the length of the vertical bar notch is less than the longitudinal length of the air flow adjusting plate, the air flow adjusting plate is conveniently arranged into a whole plate, and the assembly is convenient.

The opening structure can be further arranged to be an oblique strip notch, namely, the extending direction of the oblique strip notch and the longitudinal direction and the transverse direction of the airflow adjusting plate are arranged at a certain included angle.

In order to facilitate the installation, the box body framework is provided with an inserting groove; the outer wall can be inserted into the insertion groove. The box body framework can be a structure formed by connecting a plurality of supporting rods, grooves are formed in the supporting rods, and inserting grooves formed by the grooves formed in the two symmetrically-arranged supporting rods are used for installing the outer wall between the two supporting rods. Of course, the outer wall can be detachably connected to the box body framework in other modes, such as buckle connection, bolt connection or adhesive connection.

V₁≤V₂/5；

Wherein, V₁Is the volume of the gas flow regulating device; v₂Is the volume of the high and low temperature test chamber.

Currently, in some test standards for high and low temperature test chambers (e.g., damp heat test), volume specifications for the test object cannot exceed the test chamber body volume 1/5. Therefore, in order to avoid the influence of the air flow adjusting device on the air flow circulation as much as possible, the volume of the air flow adjusting device cannot exceed the test chamber main body volume 1/5. Of course, other non-specified volumes for the high and low temperature test chamber may be achieved by industry convention to achieve test chamber body volume 1/3. Therefore, the volume of the air flow control device can be appropriately designed according to the object to be measured and the type of test, and is not particularly limited herein.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.