A high-precision temperature-controlled test chamber

Abstract

The present invention provides a high-precision temperature-controlled test chamber, which relates to the field of aging test chambers, including a chamber, a heating mechanism and an air conditioning mechanism, wherein the heating mechanism includes a plurality of heating units evenly arranged on the top of the chamber, and the air conditioning mechanism includes a heat dissipation main pipe and a plurality of air conditioning units. When the temperature is lower than the set temperature, the heating unit circulates to heat the temperature inside the chamber; when the components generate more heat and the temperature inside the chamber is higher than the set temperature, the heating unit stops heating, and the air conditioning unit discharges part of the overheated air out of the chamber and introduces it into the heat dissipation main pipe, and external cold air enters the chamber through the air inlet on the chamber, thereby realizing high-precision regulation of the temperature inside the chamber; the single group of heating units and air conditioning units of the present invention dynamically adjust the temperature inside the chamber, thereby realizing high-precision regulation of different areas inside the chamber, effectively avoiding the problem of local overheating or overcooling, and realizing dynamic regulation of the overall temperature inside the chamber, which has great market application value.

Description

Technical Field

[0001] The present invention relates to the field of aging test chambers, and in particular to a high-precision temperature-controlled test chamber. Background Art

[0002] The test chamber simulates the use environment of the test piece by setting different temperature working conditions to test whether the operating conditions of the test piece meet the requirements. However, the test chamber is usually used to measure the working conditions of the test piece in a static and non-working state, that is, the environment inside the test chamber is heated to a roughly set temperature through the heating equipment of the test chamber. However, as the detection range of the test piece continues to increase, there is currently a problem of low measurement accuracy for components such as electrical cabinets and motors that dissipate heat during operation. The main reason is that the electrical cabinets and motors continue to generate heat when they are in working state, and the heat they emit themselves may be higher than the set temperature. However, it is difficult for existing conventional test chambers to dynamically adjust the temperature inside the test chamber, resulting in large temperature fluctuations inside the test chamber. Therefore, how to achieve high-precision and dynamic adjustment of the temperature inside the test chamber has become an urgent problem to be solved by technical personnel in this field. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a high-precision temperature-controlled test chamber, which achieves high-precision and dynamic adjustment of the temperature in the test chamber.

[0004] The present invention is achieved through the following technical solutions:

[0005] A high-precision temperature-controlled test chamber comprises a chamber, a heating mechanism and an air conditioning mechanism. The chamber wall is provided with a plurality of air inlets connected to the outside. The air conditioning mechanism is arranged outside the chamber. The heating mechanism comprises a plurality of heating units evenly arranged on the top of the chamber. The heating units circulate and heat the air in the chamber. The air conditioning mechanism comprises a heat dissipation main pipe and a plurality of air conditioning units. The air conditioning units are matched with the heating units one by one. The air inlets of the air conditioning units are connected to the heating units, and the air outlets of the air conditioning units are connected to the heat dissipation main pipe. The air conditioning units are used to guide part of the gas in the chamber to the heat dissipation main pipe.

[0006] It can be seen that in the above technical solution, multiple groups of heating units of the heating mechanism circulate and heat the air in the box, and the air conditioning unit is used to guide part of the gas in the box to the heat dissipation main duct. When the temperature is lower than the set temperature, the single group of heating units circulates to heat the temperature in the box; when the components generate more heat and the temperature in the box is higher than the set temperature, the air conditioning unit discharges the overheated air out of the box and introduces it into the heat dissipation main duct, and the external cold air enters the box through the air inlet on the box to achieve cooling, thereby realizing high-precision adjustment of the temperature in the box; the single group of heating units and air conditioning units dynamically adjust the temperature in the box, thereby realizing high-precision adjustment of different areas in the box, effectively avoiding the problem of local overheating or overcooling, and realizing dynamic adjustment of the overall temperature in the box.

[0007] According to the above technical solution, preferably, the heating unit includes a bellows, an axial flow fan and multiple groups of heating tubes arranged on both sides of the axial flow fan. The bellows is fixed at the top of the box body, an air inlet is provided at the lower part of the bellows, and air outlets are provided on both sides of the bellows. The axial flow fan is arranged at the air inlet, and the heating tubes are arranged at the air outlet. The axial flow fan draws air toward the bottom and blows the air horizontally to the heating tubes, and the heating tubes heat the air.

[0008] It can be seen that in the above technical solution, the axial flow fan draws air toward the bottom and blows the air horizontally toward the heating tube. The heating tube heats the air, thereby achieving a circulating heating temperature inside the box.

[0009] According to the above technical solution, preferably, the air conditioning unit includes a heat dissipation branch pipe and a heat dissipation control valve, the air inlet end of the heat dissipation branch pipe passes through the top of the box body and is inserted into the bellows, the air outlet end of the heat dissipation branch pipe is connected to the air inlet of the heat dissipation main pipe, and the heat dissipation control valve is arranged on the heat dissipation branch pipe, and the heat dissipation control valve is used to control the opening degree of the heat dissipation branch pipe.

[0010] It can be seen that in the above technical solution, when the temperature inside the box is higher than the set temperature, the heat dissipation control valve controls the opening of the heat dissipation branch pipe, the heating pipe stops heating, and the axial flow fan continues to run, and the high-temperature gas in the box is introduced into the heat dissipation branch pipe and the heat dissipation main pipe in turn.

[0011] According to the above technical solution, preferably, each group of heating units is provided with a temperature sensor for measuring the local temperature inside the box. The temperature sensor is arranged at the air outlet of the heating unit. The temperature sensor is electrically connected to the axial flow fan and the heat dissipation control valve. Each group of air conditioning units is independently regulated.

[0012] It can be seen that in the above technical solution, the temperature sensor arranged at the air outlet of the heat unit can more accurately measure the temperature of the treated gas.

[0013] According to the above technical solution, preferably, the air inlet end of the heat dissipation branch pipe is vertically facing the axial flow fan.

[0014] It can be seen that in the above technical solution, when the heat dissipation control valve is opened, the axial flow fan can smoothly guide the high-temperature gas in the box into the heat dissipation branch pipe.

[0015] According to the above technical solution, preferably, it also includes a control system, which includes a signal conversion module, a correction module and a central processor. The input end of the signal conversion module is connected to the output end of the temperature sensor, the output end of the signal conversion module is connected to the input end of the correction module, and the output end of the correction module is connected to the input end of the central processor. The central processor is electrically connected to the axial fan, heating tube and heat dissipation control valve respectively.

[0016] According to the above technical solution, preferably, the temperature sensor measures the temperature inside the box and generates a temperature electrical signal, the signal conversion module is used to amplify the temperature electrical signal and convert the data to generate data information, the correction module is used to nonlinearly correct the data information, and input the corrected data information into the central processor, the central processor compares the data information with the set temperature value to obtain a deviation value, and generates an adjustment signal to control the operating status of the axial flow fan, heating tube and heat dissipation control valve.

[0017] According to the above technical solution, preferably, the heat dissipation main duct is provided with a negative pressure fan, and the negative pressure fan is used to extract the gas in the heat dissipation main duct.

[0018] It can be seen that in the above technical solution, when the temperature inside the box is much higher than the set temperature, the negative pressure fan can be turned on to quickly extract the high-temperature gas in the box and improve the cooling efficiency.

[0019] According to the above technical solution, preferably, a plurality of test holes are provided on the box wall of the box body.

[0020] The beneficial effects of the present invention are:

[0021] (1) The test box of the present invention includes a heating mechanism and an air conditioning mechanism, wherein multiple groups of heating units of the heating mechanism circulate and heat the air in the box, and the air conditioning unit is used to guide part of the gas in the box to the heat dissipation main pipe. When the temperature is lower than the set temperature, the heating unit of a single group circulates and heats the temperature in the box; when the components generate more heat and the temperature in the box is higher than the set temperature, the air conditioning unit discharges the overheated air from the box and introduces it into the heat dissipation main pipe, and the external cold air enters the box through the air inlet on the box to achieve cooling, thereby achieving high-precision temperature regulation in the box;

[0022] (2) The single set of heating units and air conditioning units of the present invention dynamically adjusts the temperature inside the box, thereby achieving high-precision adjustment of different areas inside the box, effectively avoiding the problem of local overheating or overcooling, and achieving dynamic adjustment of the overall temperature inside the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 shows an isometric structural diagram according to an embodiment of the present invention;

[0024] Figure 2 It shows a schematic diagram of the main structure according to an embodiment of the present invention;

[0025] Figure 3 A schematic side view of the structure of an embodiment of the present invention is shown;

[0026] Figure 4 It shows a schematic diagram of a top view structure according to an embodiment of the present invention;

[0027] Figure 5 Shown Figure 4 Schematic diagram of the cross-sectional structure in the AA direction;

[0028] Figure 6 It shows a schematic structural diagram of a heating mechanism according to an embodiment of the present invention;

[0029] Description of reference numerals:

[0030] 1. Box body; 2. Heating mechanism; 3. Air conditioning mechanism; 4. Air inlet; 5. Heating unit; 6. Bellows; 7. Axial fan; 8. Heating pipe; 9. Heat dissipation main pipe; 10. Air conditioning unit; 11. Heat dissipation branch pipe; 12. Heat dissipation control valve; 13. Test hole. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and the best embodiment. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the invention.

[0032] In the description of the invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the invention.

[0033] Example 1

[0034] As shown in the figure, the present invention provides a high-precision temperature-controlled test box, including a box body 1, a heating mechanism 2 and an air conditioning mechanism 3. The box wall of the box body 1 is provided with multiple groups of air inlets 4 connected to the outside world. The air conditioning mechanism 3 is arranged outside the box body 1, and the heating mechanism 2 includes multiple groups of heating units 5 evenly arranged on the top of the box body 1. The heating unit 5 is used to circulate and heat the air in the box body 1, wherein the heating unit 5 includes a bellows 6, an axial flow fan 7 and multiple groups of heating pipes 8 arranged on both sides of the axial flow fan 7. The bellows 6 is fixed to the top of the box body 1, and an air inlet is provided at the lower part of the bellows 6. Air outlets are provided on both sides of the bellows 6. The axial flow fan 7 is arranged at the air inlet, and the heating pipe 8 is arranged at the air outlet. The axial flow fan 7 draws air toward the lower side and blows the extracted air horizontally to the heating pipe 8. The heating pipe 8 is used to heat the air, and the air conditioning mechanism 3 includes a heat dissipation main duct 9 and multiple groups of air conditioning units 10. The air conditioning unit The unit 10 is matched with the heating unit 5 one by one, the air inlet 4 of the air conditioning unit 10 is connected to the heating unit 5, and the air outlet of the air conditioning unit 10 is connected to the heat dissipation main pipe 9. The air conditioning unit 10 is used to guide part of the gas in the box 1 to the heat dissipation main pipe 9, wherein the air conditioning unit 10 includes a heat dissipation branch pipe 11 and a heat dissipation control valve 12. The air inlet end of the heat dissipation branch pipe 11 passes through the top of the box 1 and is inserted into the bellows 6, and the air outlet end of the heat dissipation branch pipe 11 is connected to the air inlet 4 of the heat dissipation main pipe 9. The heat dissipation control valve 12 is arranged on the heat dissipation branch pipe 11. The heat dissipation control valve 12 is used to control the opening degree of the heat dissipation branch pipe 11. Each group of heating units 5 is provided with a temperature sensor for measuring the local temperature in the box 1. The temperature sensor is arranged at the air outlet of the heating unit 5. The temperature sensor is electrically connected to the axial flow fan 7 and the heat dissipation control valve 12. Each group of air conditioning units 10 is independently regulated.

[0035] Working process:

[0036] The multiple groups of heating units 5 of the heating mechanism 2 circulate and heat the air in the box 1, and the air conditioning unit 10 is used to guide part of the gas in the box 1 to the heat dissipation main pipe 9; when the temperature is lower than the set temperature, the single group of heating units 5 circulates and heats the temperature in the box 1 until the set temperature is reached inside the box; when the tested component generates more heat during operation and the temperature in the box 1 is higher than the set temperature, the air conditioning unit 10 discharges the overheated air out of the box 1 and introduces it into the heat dissipation main pipe 9, and the external cold air enters the box 1 through the air inlet 4 on the box 1 to achieve cooling, thereby realizing high-precision temperature regulation in the box 1.

[0037] Furthermore, the air inlet end of the heat dissipation branch pipe 11 is vertically opposite to the axial flow fan 7 , and when the heat dissipation control valve 12 is opened, the axial flow fan 7 can smoothly guide part of the high-temperature gas in the box 1 into the heat dissipation branch pipe 11 .

[0038] Furthermore, the heat dissipation main duct 9 is provided with a negative pressure fan (not shown in the figure), which is used to extract the gas in the heat dissipation main duct 9. When the temperature in the box 1 is much higher than the set temperature, the negative pressure fan can be turned on to quickly extract the high-temperature gas in the box 1, thereby improving the cooling efficiency.

[0039] Furthermore, a plurality of test holes 13 are provided on the wall of the box body 1 .

[0040] Example 2

[0041] As shown in the figure, the present invention provides a high-precision temperature-controlled test box, including a box body 1, a heating mechanism 2, an air conditioning mechanism 3 and a control system. The box wall of the box body 1 is provided with multiple groups of air inlets 4 connected to the outside world. The air conditioning mechanism 3 is arranged outside the box body 1, and the heating mechanism 2 includes multiple groups of heating units 5 evenly arranged on the top of the box body 1. The heating unit 5 is used to circulate and heat the air in the box body 1, wherein the heating unit 5 includes a bellows 6, an axial flow fan 7 and multiple groups of heating pipes 8 arranged on both sides of the axial flow fan 7. The bellows 6 is fixed to the top of the box body 1, and an air inlet is provided at the lower part of the bellows 6. Air outlets are provided on both sides of the bellows 6, and the axial flow fan 7 is arranged at the air inlet. The heating pipe 8 is arranged at the air outlet, the axial flow fan 7 sucks air toward the bottom and blows the air horizontally to the heating pipe 8, the heating pipe 8 heats the air, and the air conditioning mechanism 3 includes a heat dissipation main pipe 9 and a plurality of air conditioning units 10, the air conditioning units 10 are matched with the heating units 5 one by one, the air inlet 4 of the air conditioning unit 10 is connected to the heating unit 5, the air outlet of the air conditioning unit 10 is connected to the heat dissipation main pipe 9, the air conditioning unit 10 is used to guide part of the gas in the box 1 to the heat dissipation main pipe 9, wherein the air conditioning unit 10 includes a heat dissipation branch pipe 11 and a heat dissipation control valve 12, the air inlet end of the heat dissipation branch pipe 11 passes through the top plug of the box 1 In the air inlet box 6, the outlet end of the heat dissipation branch pipe 11 is connected to the air inlet 4 of the heat dissipation main pipe 9, and the heat dissipation control valve 12 is arranged on the heat dissipation branch pipe 11. The heat dissipation control valve 12 is used to control the opening degree of the heat dissipation branch pipe 11. Each group of heating units 5 is provided with a temperature sensor for measuring the local temperature in the box body 1. The temperature sensor is arranged at the air outlet of the heating unit 5. The temperature sensor is electrically connected to the axial flow fan 7 and the heat dissipation control valve 12. Each group of air conditioning units 10 is independently regulated, and the control system includes a signal conversion module, a correction module and a central processor. The input end of the signal conversion module is connected to the output end of the temperature sensor. The output end is connected to the input end of the correction module, and the output end of the correction module is connected to the input end of the central processor. The central processor is electrically connected to the axial flow fan 7, the heating tube 8 and the heat dissipation control valve 12 respectively, wherein the temperature sensor measures the temperature inside the box 1 and generates a temperature electrical signal, the signal conversion module is used to amplify the temperature electrical signal and convert the data to generate data information, the correction module is used to nonlinearly correct the data information, and input the corrected data information into the central processor, the central processor compares the data information with the set temperature value to obtain the deviation value, and generates an adjustment signal to control the operating status of the axial flow fan 7, the heating tube 8 and the heat dissipation control valve 12.

[0042] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A high-precision temperature-controlled test chamber, characterized in that: The invention comprises a box body, a heating mechanism and an air conditioning mechanism, wherein a plurality of air inlets connected to the outside are provided on the box wall of the box body, the air conditioning mechanism is arranged outside the box body, the heating mechanism comprises a plurality of heating units evenly arranged on the top of the box body, the heating units circulate and heat the air in the box body, the air conditioning mechanism comprises a heat dissipation main pipe and a plurality of air conditioning units, the air conditioning units are matched with the heating units one by one, the air inlets of the air conditioning units are connected to the heating units, the air outlets of the air conditioning units are connected to the heat dissipation main pipe, and the air conditioning units are used to guide part of the gas in the box body to the heat dissipation main pipe; The heating unit includes a bellows, an axial flow fan, and a plurality of heating tubes arranged on both sides of the axial flow fan. The bellows is fixed to the top of the box body, an air inlet is provided at the lower part of the bellows, and air outlets are provided on both sides of the bellows. The axial flow fan is arranged at the air inlet, and the heating tubes are arranged at the air outlet. The axial flow fan draws air toward the bottom and blows the air horizontally toward the heating tubes, and the heating tubes heat the air. The air conditioning unit includes a heat dissipation branch pipe and a heat dissipation control valve. The air inlet end of the heat dissipation branch pipe passes through the top of the box body and is inserted into the wind box. The air outlet end of the heat dissipation branch pipe is connected to the air inlet of the heat dissipation main pipe. The heat dissipation control valve is arranged on the heat dissipation branch pipe and is used to control the opening degree of the heat dissipation branch pipe. Each group of heating units is equipped with a temperature sensor for measuring the local temperature in the box. The temperature sensor is arranged at the air outlet of the heating unit. The temperature sensor is electrically connected to the axial flow fan and the heat dissipation control valve. Each group of air conditioning units is independently controlled. It also includes a control system, which includes a signal conversion module, a correction module and a central processor. The input end of the signal conversion module is connected to the output end of the temperature sensor, the output end of the signal conversion module is connected to the input end of the correction module, the output end of the correction module is connected to the input end of the central processor, and the central processor is electrically connected to the axial fan, heating tube and heat dissipation control valve respectively.

2. A high-precision temperature-controlled test chamber according to claim 1, characterized in that: The air inlet end of the heat dissipation branch pipe is vertically opposite to the axial flow fan.

3. A high-precision temperature-controlled test chamber according to claim 1, characterized in that: The temperature sensor measures the temperature inside the box and generates a temperature electrical signal. The signal conversion module is used to amplify the temperature electrical signal and convert the data to generate data information. The correction module is used to nonlinearly correct the data information and input the corrected data information into the central processor. The central processor compares the data information with the set temperature value to obtain a deviation value and generates an adjustment signal to control the operating status of the axial flow fan, heating pipe and heat dissipation control valve.

4. A high-precision temperature-controlled test chamber according to any one of claims 1 to 3, characterized in that: The heat dissipation main pipeline is provided with a negative pressure fan, and the negative pressure fan is used to extract the gas in the heat dissipation main pipeline.

5. A high-precision temperature-controlled test chamber according to claim 4, characterized in that: The box wall of the box body is provided with multiple groups of test holes.

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