CN220323470U

CN220323470U - Temperature control test incubator

Info

Publication number: CN220323470U
Application number: CN202321432474.4U
Authority: CN
Inventors: 孙成思; 何瀚; 王灿; 张鑫
Original assignee: Chengdu Statan Testing Technology Co ltd
Current assignee: Chengdu Statan Testing Technology Co ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2024-01-09
Anticipated expiration: 2033-06-06

Abstract

The utility model discloses a temperature control test incubator, which is applied to the technical field of microelectronic packaging and testing and comprises the following components: a housing having a cavity therein; the baffle plate is arranged in the shell and divides the cavity into a test cavity and an equipment cavity which are communicated with each other; the heating component is arranged in the equipment cavity and is used for heating air in the equipment cavity; the fan is arranged in the equipment cavity and blows hot air in the equipment cavity to the equipment cavity along the partition plate; the test base is arranged in the test cavity and is connected with the sample to be tested and used for fixing the sample to be tested. According to the temperature control testing temperature box, the partition plates, the heating assemblies and the fans are arranged in the temperature control testing temperature box, the working states of the heating assemblies and the fans are controlled to control the temperature and the fluid flow rate in the shell, hot air obtained through the heating assemblies circulates between the equipment cavity and the testing cavity in the shell, the temperature of the hot air is dynamically controlled, and the temperature uniformity and the flow field uniformity in the testing temperature box are guaranteed.

Description

Temperature control test incubator

Technical Field

The utility model relates to the technical field of microelectronic packaging and testing, in particular to a temperature control testing incubator.

Background

With the popularization of intelligent technology and the continuous growth of the semiconductor market, components such as chips, circuit boards and the like have been widely applied to electronic products such as intelligent wear, mobile phones, vehicle-mounted electronics, desktop computers and the like. With the miniaturization of electronic products, chips are also becoming more and more integrated according to moore's law, and smaller packaging area ratios, i.e. more chips can be placed in a unit area, are being pursued in packaging.

However, under the high-density packaging, the closely connected chips can generate larger heat power consumption, so that the temperature of the electronic product is rapidly increased, and the reliability of the electronic components is greatly reduced due to the high temperature, thereby causing the failure of the product. Therefore, before the products such as chips, PCBs and the like are produced in mass production and marketed, a high-temperature aging test is required to judge the thermal reliability of the products, so that the design of the incubator is necessary, and the function of the incubator is to make the tested products in a temperature environment similar to the working state. The most important of the design of the incubator is to solve the problem of temperature equalization, which is also a major problem in the current designs of incubators on the market, which causes that the tested products cannot be at the same temperature and the test results are inaccurate.

Therefore, there is an urgent need for a test incubator that can solve the temperature equalization problem.

Disclosure of Invention

The utility model mainly aims to provide a temperature control test incubator, which solves the problem that the conventional test incubator is difficult to realize temperature equalization.

In order to achieve the above object, the present utility model provides a temperature control test incubator, the temperature control test Wen Xiangbao includes:

a housing having a cavity therein;

the clapboard is arranged in the shell and divides the cavity into a test cavity and an equipment cavity which are communicated with each other;

the heating component is arranged in the equipment cavity and is used for heating air in the equipment cavity;

the fan is arranged in the equipment cavity and used for blowing hot air in the equipment cavity to the equipment cavity along the partition plate;

the test base is arranged in the test cavity and is connected with the sample to be tested and used for fixing the sample to be tested.

In some embodiments, the partition board is provided with a bearing part, the bearing part is of a hollow box-shaped structure, the interior of the bearing part is an equipment cavity, a test cavity is arranged between the bearing part and the interior of the shell, and the heating component and the fan are arranged in the equipment cavity; the bearing part is also provided with air outlets, a plurality of air outlets are arranged on the same side of the bearing part at intervals, and the air outlets are used for blowing out heated air.

In some embodiments, the partition plate further includes a flow guiding portion, where the flow guiding portion is disposed on the bearing portion and near one end of the air outlet, the flow guiding portion is disposed at an included angle with the bearing portion, and the flow guiding portion is inclined downward, and is used for guiding the heated air downward.

In some embodiments, the bearing part is further provided with an air inlet, the air inlet and the air outlet are arranged on different sides of the bearing part, the air inlet is opposite to the air outlet, the air inlet and the air outlet are used for communicating the equipment cavity with the test cavity, the fan is connected with the bearing part through the air inlet, and the air outlet direction of the fan is towards the air outlet.

In some embodiments, the number of fans is a plurality of, the number of air inlets corresponds to the number of fans, a temperature-equalizing air duct is formed between the air inlets and the air outlets, the heating component is perpendicular to the temperature-equalizing air duct and is arranged in the equipment cavity, and the temperature-equalizing air duct is used for equalizing the temperature of hot air in the equipment cavity.

In some embodiments, the test base includes a plurality of jigs, and the plurality of jigs are disposed in the test cavity along the length direction of the flow guiding portion;

the jig is perpendicular to the length direction of the flow guiding part, and is used for fixing the sample to be measured.

In some embodiments, the casing is further provided with a fixing groove, the fixing groove is disposed at the bottom of the casing, the fixing groove is disposed along the length direction of the flow guiding portion, and the plurality of jigs are connected with the casing through the fixing groove.

In some embodiments, the temperature-controlled test incubator further comprises a sensor assembly disposed within the test chamber and connected to the test base, the sensor configured to obtain environmental information within the test chamber.

In some embodiments, the sensor assembly includes a temperature sensor and a speed sensor, both of which are connected to the test base, the temperature sensor being configured to obtain the temperature of the sample to be measured, the speed sensor being configured to obtain the flow rate of hot air flowing through the flow field of the sample to be measured.

In some embodiments, the temperature control test incubator further comprises an air guide block, the air guide block is arranged on one side, far away from the partition plate, of the bottom of the shell, the air guide block is provided with an air guide surface, the air guide surface is connected with the bottom of the shell in an included angle, and the air guide surface is used for guiding air passing through the sample to be tested upwards.

According to the utility model, the partition board, the heating component and the fan are arranged in the temperature control test incubator, so that the test incubator is in a circulating and uniform-temperature sealing environment, the temperature and the fluid flow rate in the temperature control test incubator can be controlled by controlling the working states of the heating component and the fan, the heat of hot air obtained by the heating component circulates between the equipment cavity and the test cavity in the shell, the temperature of the hot air is dynamically controlled, and the temperature uniformity and the flow field uniformity in the test incubator are ensured.

Drawings

FIG. 1 is a schematic diagram showing the internal structure of an embodiment of a temperature-controlled test incubator according to the present utility model;

FIG. 2 is a schematic view showing the external structure of an embodiment of a temperature-controlled test incubator according to the present utility model;

FIG. 3 is a schematic cross-sectional view of the temperature control test incubator of FIG. 2;

FIG. 4 is a schematic view of a separator plate according to the present utility model;

FIG. 5 is a schematic view of a test base according to the present utility model;

FIG. 6 is a schematic diagram of a control method of the temperature control test incubator according to the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made more clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a temperature control test incubator, which comprises:

a housing 100 having a cavity inside the housing 100; the baffle 200 is arranged in the shell 100, and the baffle 200 divides the cavity into a test cavity 110 and an equipment cavity 120 which are communicated; the heating assembly 300, the heating assembly 300 is disposed in the equipment chamber 120, the heating assembly 300 is used for heating the air in the equipment chamber 120; the fan 400 is arranged in the equipment cavity 120 and is used for blowing hot air in the equipment cavity 120 to the equipment cavity 120 along the partition board 200; the test base 500, the test base 500 is disposed in the test chamber 110, and the test base 500 is connected to the sample 700 to be tested and is used for fixing the sample 700 to be tested.

In this embodiment, as shown in fig. 1-6, the inside of the housing 100 is a closed cavity, the partition board 200 is disposed at the top of the inside of the housing 100, the inside of the housing 100 is partitioned into the equipment cavity 120 and the test cavity 110 by the partition board 200, the equipment cavity 120 is a cavity enclosed by the partition board 200 and the top of the housing 100, the test cavity 110 is located at the lower end of the inside of the housing 100, when the air in the housing 100 is heated by the heating component 300 and blown out of the equipment cavity 120 by the blower 400, the heated fluid contacts with one end of the partition board 200 and moves downwards to the test cavity 110, passes through the sample 700 to be tested, naturally rises to the height of the blower 400, and is then brought into the equipment cavity 120 again by the blower 400 for heating.

It can be appreciated that when the temperature control test incubator heats, due to the objectively existing heat radiation conduction and the different shapes of the housing 100, the heat energy in the test chamber 110 inside the housing 100 is dissipated, and the heat dissipation rates at different positions in the test chamber 110 are different, so that the temperature difference occurs inside the test chamber 110, and therefore, the temperature control test incubator needs to be continuously heated and the heat is ensured to be equal everywhere. The separator 200 is provided with a bending part corresponding to the blowing direction of the blower 400, the blower 400 directly contacts the separator 200 and reflects the blown fluid into the test cavity 110 below, and the hot air moves from the other side of the test cavity along the inner wall of the housing 100 to the corresponding position of the blower 400, thereby forming a circulating flow field.

In this embodiment, the lines of the heating assembly 300 and the blower 400 are all arranged in the casing 100 in a penetrating manner and connected with an external power supply and a control assembly, and the control assembly arranged outside the test cavity 110 is used for controlling the heating assembly 300 and the blower 400, and dynamically adjusting the temperature in the temperature control test incubator, so as to realize temperature uniformity and flow field uniformity.

In this embodiment, the material of the housing 100 is 304 stainless steel, which has good heat resistance and can improve the thermal reliability of the test incubator. The heating assembly 300 is a PTC (Positive Temperature Coefficient ) heater, the fan 400 is an axial flow fan 400, and it will be appreciated that the specific selection of the heating assembly 300 and the fan 400 can be replaced by other high temperature resistant similar products.

In terms of thermal design, the heating assembly 300 and the blower 400 are selected from the thermal mechanism to ensure that the highest temperature of the cavity can reach the limit requirement. The single highest heat consumption of the PTC heater is 800W, the highest temperature requirement of the temperature control test incubator can reach 85 ℃, the flow of the fan is calculated according to the principle of heat transfer chemistry, the temperature is 25 ℃,

P＝C _p mΔT＝C _p ρQΔT

the simplification is that the following empirical formula of heat transfer chemistry is obtained:

Q＝0.05P/ΔT＝0.05*3*800/(85-25)＝2m ³ /min

however, since the blower cannot generally operate at two points of maximum flow, when qmax=1.5-2, the Q value is optimal, i.e. the total air volume needs to be selected according to the size of the blower 400, in this embodiment, 5 maximum flows are selected to be 0.7m ³ An axial flow fan 400 of/min.

In some embodiments, the temperature-controlled test incubator further comprises a control module disposed outside the cavity, the control module being connected to the heating assembly 300 and the fan 400, the control module being configured to control the operation power of the heating assembly 300 and the fan 400.

In this embodiment, the control module is capable of being connected with the heating assembly 300 and the blower 400 in a signal manner, when the control module receives the temperature or the air flow velocity at a certain point in the test cavity 110 is uneven, the control module adjusts the power of the heating assembly 300 and/or the blower 400, and controls the temperature and the flow velocity through negative feedback, so that the temperature uniformity and the flow field uniformity in the temperature control test incubator can be greatly ensured.

In some embodiments, the partition 200 is provided with a carrying part 220, the carrying part 220 is of a hollow box-shaped structure, the inside of the carrying part 220 is an equipment cavity 120, a test cavity 110 is arranged between the carrying part 220 and the inside of the shell 100, and the heating component 300 and the fan 400 are arranged in the equipment cavity 120; the bearing portion 220 is further provided with an air outlet 222, the plurality of air outlets 222 are disposed at intervals on the same side of the bearing portion 220, and the air outlet 222 is used for blowing out heated air.

In this embodiment, referring to fig. 1 to 3, the carrying portion includes a bottom plate and two side plates connected to each other, the two side plates and the bottom plate form a U shape, the two side plates are parallel to each other, the two side plates, the bottom plate and the housing 100 enclose to obtain the equipment cavity 120, the air inlet 221 and the air outlet 222 are respectively disposed on the two side plates, and the number of the air inlet 221 and the air outlet 222 is equal, and the positions of the air inlet 221 and the air outlet 222 are corresponding to each other. In the device cavity 120, the direction from the air inlet 221 to the air outlet 222 is the flowing direction of the heating fluid, and in the test cavity 110, the fluid flowing back from the air outlet 222 to the air inlet 221 is the flowing direction of the heating fluid for heating the sample to be tested. In the apparatus chamber 120, the heating assembly 300 is connected to the top plate of the housing 100, and the power cord of the heating assembly 300 and the blower 400 passes through the top of the housing 100 to be connected to an external power source.

In some embodiments, the partition 200 further includes a guiding portion 210, the guiding portion 210 is disposed at an end of the bearing portion 220 near the air outlet 222, the guiding portion 210 is disposed at an angle with the bearing portion 220, the guiding portion 210 is inclined downward, and the guiding portion 210 is configured to guide the heated air downward.

As shown in fig. 1, the flow guiding portion 210 has a smooth planar plate structure disposed at an angle with the top of the housing 100, so as to prevent turbulence from occurring in the hot air blown out from the equipment chamber 120 to the test chamber 110, resulting in uneven flow velocity and pressure of the flow field inside the housing 100. The smooth flat configuration facilitates fluid flow down the separator 200.

In this embodiment, the guiding portion 210 and the carrying portion 220 are disposed at a fixed angle, and the guiding portion 210 and the carrying portion 220 are formed by bending a plate-shaped structure, and in another embodiment, the guiding portion 210 and the carrying portion 220 can be in a split structure, so that installation is facilitated.

The heating element 300 has a heating surface for heating the fluid, and in this embodiment, the heating surface of the heating element 300 faces the air brought into the equipment chamber 120 by the fan 400, i.e. the heating surface of the heating element 300 is a windward surface for enhancing the heating efficiency.

In some embodiments, the bearing portion 220 is further provided with an air inlet 221, the air inlet 221 and the air outlet 222 are disposed on different sides of the bearing portion 220, the air inlet 221 is opposite to the air outlet 222, the air inlet 221 and the air outlet 222 are used for communicating the equipment cavity 120 and the test cavity 110, the fan 400 is connected with the bearing portion 220 through the air inlet 221, and the air outlet direction of the fan 400 faces the air outlet 222.

As shown in fig. 4, the air inlet 221 and the air outlet 222 are disposed on the same straight line on the left and right sides of the bearing portion 220, so that the equipment cavity 120 is communicated with the test cavity 110, in the equipment cavity 120, a fluid flow field from the air inlet 221 to the air outlet 222 is a uniform temperature air channel, the heating assembly 300 is perpendicular to the uniform temperature air channel, and when the fan 400 disposed on the air inlet 221 works, air is driven by the fan 400 to move along the uniform temperature air channel and pass through the heating assembly 300, and the uniform temperature air channel is used for heating air.

In this embodiment, the size of the air inlet 221 is the same as the size of the blower 400, and the size of the air outlet 222 is set corresponding to the size of the heating blower 400.

In some embodiments, the number of fans 400 is multiple, the number of air inlets 221 is set corresponding to the number of fans 400, a temperature equalizing air channel is formed between the air inlets 221 and the air outlets 222, the heating assembly 300 is perpendicular to the temperature equalizing air channel and is disposed in the equipment cavity 120, and the temperature equalizing air channel is used for equalizing the temperature of the hot air in the equipment cavity 120.

In this embodiment, as shown in fig. 4, the number of the air inlets 221 and the air outlets 222 is five, the five air inlets 221 and the five air outlets 222 are in one-to-one correspondence with each other to form five uniform temperature air channels, the heating assembly 300 is parallel to the fan 400, the fan 400 brings the fluid outside the equipment cavity 120 into the equipment cavity 120 and makes the fluid pass through the heating assembly 300, the heating assembly 300 heats the fluid and then conveys the fluid outwards through the air outlets 222, and one air inlet 221 and one air outlet 222 bearing part 220 are correspondingly arranged in a straight line, so that the fluid can enter and exit the equipment cavity 120 along the shortest path, and the turbulence of the fluid inside the equipment cavity 120 is avoided as much as possible.

In other embodiments, the number of the air inlets 221 and the number of the air outlets 222 can be increased or decreased according to the requirements on the premise of ensuring a one-to-one correspondence.

In some embodiments, the test base 500 includes a plurality of jigs 510, wherein the plurality of jigs 510 are disposed in the test cavity 110 along the length direction of the flow guiding portion 210;

the direction of the jig 510 is perpendicular to the length direction of the guiding portion 210, and the jig 510 is used for fixing the sample 700 to be measured.

As shown in fig. 5, a plurality of jigs 510 are disposed on the bottom cavity wall of the test cavity 110 along the length direction of the fixing groove 130, the sample 700 to be tested fixed on the jigs 510 is disposed perpendicular to the circulating air duct, and hot air in the circulating air duct uniformly passes through the sample 700 to be tested, so that an included angle between the sample 700 to be tested on the jigs 510 and the circulating air duct is avoided, and the difference between the flow velocity and the pressure of the fluid in the test cavity 110 is caused.

In this embodiment, the jig 510 is a boss provided with two side connection portions, a groove is formed on the boss, the samples 700 to be tested are automatically clamped after being inserted into the groove from top to bottom, the samples 700 to be tested are inserted into the jigs 510 one by one along the length direction of the fixing groove 130, and the samples 700 to be tested inserted into the jig 510 are arranged perpendicular to the circulating air duct, i.e. the side surface of the samples 700 to be tested is connected with the circulating air duct in an opposite manner, so that turbulence caused by the windward surface is reduced, uneven fluid flow fields among the samples 700 to be tested are avoided, and the samples 700 to be tested perpendicular to the circulating air duct have better temperature uniformity and fluid uniformity.

In some embodiments, the housing 100 is further provided with a fixing groove 130, the fixing groove 130 is disposed at the bottom of the housing 100, the fixing groove 130 is disposed along the length direction of the flow guiding portion 210, and the plurality of fixtures 510 are connected with the housing 100 through the fixing groove 130.

As shown in fig. 3, the fixing groove 130 is disposed in parallel with the length direction of the partition board 200, when the hot air of the heating assembly 300 flows from the top to the bottom of the casing 100 through the partition board 200, the hot air can uniformly pass through the fixing groove 130, which is not disposed at the bottom of the casing 100, and the inside of the casing 100 is still a closed space, and the fixing groove 130 is used for fixing the test base 500, so as to prevent the test base 500 from being displaced by the hot air.

In this embodiment, as shown in fig. 5, the fixing grooves 130 are disposed at the bottom of the housing 100 and near one side of the air guiding block 600, and in another embodiment, the number of the fixing grooves 130 can be multiple, and the fixing grooves 130 can be disposed at the same horizontal plane inside the housing 100 or gradually rise along the flow direction of the circulating air duct, so that multiple samples 700 to be tested can be heated uniformly at the same time.

In some embodiments, the temperature-controlled test incubator further comprises a sensor assembly disposed within the test chamber 110 and coupled to the test base 500, the sensor being configured to obtain environmental information within the test chamber 110.

In this embodiment, the number of the heating assemblies 300 and the fans 400 is multiple, so that multiple air channels appear in the housing 100, the sensor assembly detects the temperatures and flow rates of the multiple air channels and uploads the temperatures and flow rates to the control module, the control module analyzes and compares the environmental information on the multiple air channels, when the environmental information between the multiple air channels has a difference value, the heating assemblies 300 or the fans 400 on the weaker side are regulated and controlled to increase the power, and the heating assemblies 300 or the fans 400 on the stronger side reduce the power, so that the multiple air channels can have temperature uniformity and flow field uniformity.

In some embodiments, the sensor assembly includes a temperature sensor and a speed sensor, both coupled to the test base 500, the temperature sensor configured to obtain the temperature of the sample 700 to be tested and the speed sensor configured to obtain the flow rate of hot air flowing through the flow field of the sample 700 to be tested.

The temperature sensors are disposed on the test base 500, the speed sensors are disposed on the housing 100, each temperature sensor is only used for sensing a temperature of one of the air channels, each speed sensor is also only used for sensing a flow rate of fluid in the air channels, that is, the temperature sensors and the speed sensors can obtain the temperature and the fluid flow rate of the air channels at the same time and transmit the temperature and the fluid flow rate to the control module, and the control module compares the temperature and the fluid flow rate with the current received temperature and the fluid flow rate according to a preset temperature and a preset fluid flow rate and respectively controls the heating efficiency of the heating assembly 300 and the rotating speed of the fan 400 of different air channels.

In another embodiment, the speed sensor can be disposed on the test base 500, and the temperature and the fluid flow rate of the sample 700 to be tested on different air channels on the test base 500 in the test cavity 110 can be monitored in real time through a plurality of speed sensors and a plurality of temperature sensors, so as to ensure the temperature uniformity and the flow field uniformity.

In detail, the temperature sensor and the speed sensor can be disposed at the bottom and the middle of the sample 700 to be tested, and the temperature sensor and the speed sensor disposed at different positions on the same sample 700 to be tested can feed back the accurate temperature and the information related to the fluid flow field in the test cavity 110 to the external control module, so that the control module can accurately control the working efficiency of the fans 400 and/or the heating assemblies 300.

In more detail, in this embodiment, the temperature preset value is 85 ℃, the interior of the housing 100 is divided into three parts, namely a left part, a middle part and a right part, when the temperature sensor feeds back that the temperature of the left side in the test cavity is lower, the temperature sensor feeds back to the control module, the control module increases the voltage of the left side PTC heater to improve the heating power consumption, when the temperature sensor on the left side obtains the temperature of 85 ℃, the voltage of the left side PTC heater is kept, and the middle part is the same as the right side PTC heater; for the fluid flow rate, when the velocity sensor obtains that the fluid flow rate of the left test base 500 is far greater than or less than the fluid flow rates on other test bases 500, the abnormal fluid flow rate is fed back to the control module, the flow rate of the test base 500 with the largest difference in the positioning flow rates is less than or greater than the flow rate of the other test bases 500, and then the exclusive property of the left axial flow fan 400 is improved or reduced, when the velocity difference of flow field fluid among the plurality of test bases 500 obtained by the control module is within 0.1m/s, the test incubator reaches flow field uniformity at this moment, when the temperature field and the flow field are equal, the temperature and the flow field uniformity of the test incubator can be guaranteed, and the control module can realize the temperature and the flow rate control through negative feedback, so that the temperature uniformity and the flow field uniformity of the test incubator can be greatly guaranteed.

In some embodiments, the temperature-controlled test incubator further includes a wind-guiding block 600, where the wind-guiding block 600 is disposed on a side of the bottom of the housing 100 away from the partition board 200, and the wind-guiding block 600 has a wind-guiding surface 610, where the wind-guiding surface 610 is connected to the bottom of the housing 100 at an angle, and the wind-guiding surface 610 is used for guiding the air passing through the sample 700 to be tested upwards.

In this embodiment, as shown in fig. 3, the air guiding block 600 is disposed along the length direction of the housing 100, and the air guiding block 600 is provided with an air guiding surface 610 with the same angle corresponding to the air guiding portion 210, where the air guiding surface 610 is configured to flow the hot air guided downward by the partition board 200 back into the equipment cavity 120 after passing through the sample 700 to be tested, so as to form a circulation air channel, and the circulation air channel and the uniform temperature air channel form a stable flow field for controlling the interior of the housing 100 to be in a uniform temperature and uniform air speed state.

In this embodiment, the air guiding surface 610 is a plane disposed at an angle with respect to the bottom of the housing 100, and in other embodiments, the air guiding surface 610 can be a curved surface, so as to facilitate upward movement of the fluid.

In the present embodiment, a part of the air guiding block 600 is disposed outside the housing 100, and in another embodiment, the air guiding block 600 is disposed completely inside the housing 100.

In some embodiments, the test base 500 includes a plurality of jigs 510, wherein the plurality of jigs 510 are disposed in the test cavity 110 along the fixing groove 130, and the jigs 510 are used for fixing the sample 700 to be tested.

In summary, the partition board, the heating component and the fan are arranged in the temperature control test incubator, so that the test incubator is in a sealed environment with circulating temperature equalization, the temperature and the fluid flow rate in the temperature control test incubator can be controlled by controlling the working states of the heating component and the fan, and the heat of hot air obtained by the heating component circulates between the equipment cavity and the test cavity in the shell and dynamically controls the temperature of the equipment cavity and the test cavity, so that the temperature uniformity and the flow field uniformity in the test incubator are ensured.

Those skilled in the art may combine and combine the features of the different embodiments or examples described in this specification and of the different embodiments or examples without contradiction.

The above description of the preferred embodiments of the present utility model should not be taken as limiting the scope of the utility model, but rather should be understood to cover all modifications, variations and adaptations of the present utility model using its general principles and the disclosure of the drawings, or the direct/indirect application of the present utility model to other relevant arts and technology.

Claims

1. A temperature control test incubator for a sample to be tested, the temperature control test Wen Xiangbao comprising:

a housing having a cavity therein;

2. The temperature control test incubator according to claim 1, wherein the partition plate is provided with a bearing part, the bearing part is of a hollow box-shaped structure, an equipment cavity is formed in the bearing part, a test cavity is formed between the bearing part and the inside of the shell, and the heating assembly and the fan are arranged in the equipment cavity; the bearing part is also provided with air outlets, a plurality of air outlets are arranged on the same side of the bearing part at intervals, and the air outlets are used for blowing out heated air.

3. The temperature control test incubator according to claim 2, wherein the partition plate further comprises a flow guiding portion, the flow guiding portion is disposed on the bearing portion and near one end of the air outlet, the flow guiding portion is disposed at an included angle with the bearing portion, the flow guiding portion is inclined downward, and the flow guiding portion is configured to guide the heated air downward.

4. The temperature-controlled test incubator according to claim 3, wherein the bearing part is further provided with an air inlet, the air inlet and the air outlet are arranged on different sides of the bearing part, the air inlet is opposite to the air outlet, the air inlet and the air outlet are used for communicating the equipment cavity with the test cavity, the fan is connected with the bearing part through the air inlet, and the air outlet direction of the fan is towards the air outlet.

5. The temperature control test incubator according to claim 4, wherein the number of fans is plural, the number of air inlets is set corresponding to the number of fans, a temperature equalizing air duct is formed between the air inlets and the air outlets, the heating assembly is perpendicular to the temperature equalizing air duct and is arranged in the equipment cavity, and the temperature equalizing air duct is used for equalizing hot air in the equipment cavity.

6. The temperature-controlled test incubator of claim 5, wherein the test base comprises a plurality of jigs, the plurality of jigs being disposed in the test chamber along a length direction of the flow guide portion;

7. The temperature-controlled test incubator according to claim 6, wherein the housing is further provided with a fixing groove provided at the bottom of the housing, the fixing groove being provided along the length direction of the flow guide portion, and a plurality of jigs being connected with the housing through the fixing groove.

8. The temperature-controlled test incubator of claim 1, further comprising a sensor assembly disposed within the test chamber and connected to the test base, the sensor being configured to obtain environmental information within the test chamber.

9. The temperature-controlled test incubator of claim 8, wherein the sensor assembly comprises a temperature sensor and a speed sensor, the temperature sensor and the speed sensor both being connected to the test base, the temperature sensor being configured to obtain the temperature of the sample to be tested, the speed sensor being configured to obtain the flow rate of hot air flowing through the flow field of the sample to be tested.

10. The temperature control test incubator of claim 1, further comprising an air guide block disposed on a side of the bottom of the housing remote from the partition plate, the air guide block having an air guide surface connected at an angle to the bottom of the housing for guiding air passing through the sample to be tested upward.