Double-working-condition test box

Abstract

The utility model discloses a double-working-condition test box which comprises a first machine shell, a first pressure-bearing shell is fixedly connected into the first machine shell, a heat preservation layer is fixedly connected into the first pressure-bearing shell, a second pressure-bearing shell is fixedly connected into the heat preservation layer, a second machine shell is fixedly connected onto the first machine shell, and a vacuum pump is fixedly connected into the second machine shell. According to the utility model, flexible switching of two working conditions of a normal pressure and humidity test and a low pressure test on the same equipment is realized, the limitation of the existing single working condition test box is changed, the practicability of the equipment is greatly improved, the equipment can meet more different types of test requirements, and the test efficiency is improved. The interior of the second pressure-bearing shell and the heat preservation layer are vacuumized in different areas, it is effectively guaranteed that water vapor cannot enter the heat preservation layer under different working conditions, performance reduction of the heat preservation layer due to water vapor invasion is avoided, meanwhile, the vacuum adsorption cold trap is additionally arranged, damage of the water vapor to the vacuum pump is reduced, and the service life of the vacuum pump is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of test chamber technology, and in particular to a dual-condition test chamber. Background Technology

[0002] In the field of product reliability testing, it is often necessary to conduct humidity tests under both normal pressure and low-pressure conditions. However, existing test chambers can only be adapted to one of these conditions. This limitation forces companies to purchase multiple test chambers of different types to meet diverse product testing needs. This not only significantly increases testing costs but also requires a large amount of space, putting considerable pressure on site planning. Utility Model Content

[0003] The purpose of this invention is to provide a dual-condition test chamber to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a dual-condition test chamber, comprising a first housing, a first pressure-bearing shell fixedly connected inside the first housing, a heat insulation layer fixedly connected inside the first pressure-bearing shell, a second pressure-bearing shell fixedly connected inside the heat insulation layer, a second housing fixedly connected to the first housing, a vacuum pump fixedly connected inside the second housing, a vacuum adsorption cold trap connected to the input end of the vacuum pump, a three-way pipe connected to the input end of the vacuum adsorption cold trap, a first solenoid valve fixedly connected to one input end of the three-way pipe, a first vacuum extraction pipeline fixedly connected to the input end of the first solenoid valve and connected to the heat insulation layer, a second solenoid valve fixedly connected to the other input end of the three-way pipe, a second vacuum extraction pipeline fixedly connected to the input end of the second solenoid valve and connected to the second pressure-bearing shell.

[0005] Preferably, a humidifier is fixedly connected inside the second housing, and a third solenoid valve is conductively connected to the output end of the humidifier. A moisture delivery pipeline is conductively fixed to the output end of the third solenoid valve and is conductively connected to the second pressure-bearing housing.

[0006] Preferably, a compressor is fixedly connected inside the second housing, a condenser is conductively connected to the output end of the compressor, an evaporator is conductively connected to the output end of the condenser, and the output end of the evaporator is conductively connected to the input end of the compressor. The evaporator is fixedly connected inside the second pressure-bearing housing.

[0007] Preferably, a heat dissipation vent is provided on the second casing at the position corresponding to the condenser.

[0008] Preferably, a heater is fixedly connected inside the second pressure-bearing housing.

[0009] Preferably, a motor is fixedly connected to the first housing, a rotating shaft is fixedly connected to the output end of the motor, a fan is fixedly connected to the rotating shaft, and the fan is disposed inside the second pressure-bearing housing.

[0010] Preferably, a door is hinged to the first housing, and an observation window is provided on the door.

[0011] Preferably, a control panel is fixedly connected to the second housing, and the control panel is electrically connected to the vacuum pump, the first solenoid valve, the second solenoid valve, the humidifier, the third solenoid valve, the motor, the compressor, and the heater.

[0012] The present invention provides a dual-condition test chamber, the advantages of which are: the present invention realizes the flexible switching between normal pressure humidity test and low pressure test on the same equipment, changing the limitations of the existing single-condition test chamber, greatly improving the practicality of the equipment, and enabling the equipment to meet more different types of test needs. By evacuating the second pressure shell and the insulation layer in separate areas, it effectively ensures that water vapor cannot enter the insulation layer under different conditions, avoiding the performance degradation of the insulation layer due to water vapor intrusion. At the same time, by adding a vacuum adsorption cold trap, the damage of water vapor to the vacuum pump is reduced, and the service life of the vacuum pump is extended. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall main structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall front view sectional structure of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the first housing of this utility model.

[0018] In the diagram: 1. First casing; 11. First pressure-bearing casing; 12. Insulation layer; 13. Second pressure-bearing casing; 14. Door; 15. Observation window; 16. Second casing; 17. Heat dissipation vent; 2. Control panel; 3. Vacuum pump; 31. Vacuum adsorption cold trap; 32. T-connector; 33. First solenoid valve; 34. First vacuum line; 35. Second solenoid valve; 36. Second vacuum line; 4. Humidifier; 41. Third solenoid valve; 42. Moisture delivery line; 5. Motor; 51. Shaft; 52. Fan; 6. Compressor; 61. Condenser; 62. Evaporator; 7. Heater. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Please see the appendix Figure 1 - Appendix Figure 4This utility model provides an embodiment of a dual-condition test chamber, comprising a first housing 1, a first pressure-bearing shell 11 fixedly connected inside the first housing 1, a heat insulation layer 12 fixedly connected inside the first pressure-bearing shell 11, a second pressure-bearing shell 13 fixedly connected inside the heat insulation layer 12, a second housing 16 fixedly connected to the first housing 1, a vacuum pump 3 fixedly connected inside the second housing 16, a vacuum adsorption cold trap 31 conductively connected to the input end of the vacuum pump 3, a three-way pipe 32 conductively connected to the input end of the vacuum adsorption cold trap 31, a first solenoid valve 33 conductively fixedly connected to one input end of the three-way pipe 32, and a first vacuum pumping pipeline 34 conductively fixedly connected to the input end of the first solenoid valve 33. The first vacuum line 34 is connected to the insulation layer 12. The other input end of the three-way pipe 32 is connected to and fixed with a second solenoid valve 35. The input end of the second solenoid valve 35 is connected to and fixed with a second vacuum line 36, which is connected to the second pressure-bearing housing 13. The first and second pressure-bearing housings 11 and 13 are used to improve the pressure-bearing capacity of the first housing 1. The insulation layer 12 is used for insulation. The second housing 16 is the equipment room. The vacuum pump 3 is used for vacuuming. The vacuum adsorption cold trap 31 is used to filter water vapor. The three-way pipe 32 is used to install the first solenoid valve 33 and the second solenoid valve 35. The first solenoid valve 33 is used to control the opening and closing of the first vacuum line 34. The first vacuum line 34 is used to transport air from the insulation layer 12. The second solenoid valve 35 is used to control the opening and closing of the second vacuum line 36, which is used to transport air from the second pressure-bearing housing 13. A humidifier 4 is fixedly connected inside the second housing 16. The output end of the humidifier 4 is connected to a third solenoid valve 41. The output end of the third solenoid valve 41 is connected to a moisture delivery line 42, which is connected to the second pressure-bearing housing 13. The humidifier 4 is used to generate moisture, and the third solenoid valve 41 is used to control the opening and closing of the moisture delivery line 42, which is used to deliver moisture into the second pressure-bearing housing 13. A compressor 6 is fixedly connected inside the second pressure-bearing housing 13. A condenser 61 is conductively connected to the output end of the compressor 6, and an evaporator 62 is conductively connected to the output end of the condenser 61. The output end of the evaporator 62 is conductively connected to the input end of the compressor 6. The evaporator 62 is fixedly connected inside the second pressure-bearing housing 13. The compressor 6 is used to compress the refrigerant, the condenser 61 is used for refrigerant condensation and heat dissipation, and the evaporator 62 is used for refrigerant evaporation and heat absorption. A heat dissipation vent 17 is provided on the second housing 16 at the position corresponding to the condenser 61, for ventilation and heat dissipation of the condenser 61. A heater 7 is fixedly connected inside the second pressure-bearing housing 13, for heating the interior of the second pressure-bearing housing 13.A motor 5 is fixedly connected to the first housing 1. A rotating shaft 51 is fixedly connected to the output end of the motor 5. A fan 52 is fixedly connected to the rotating shaft 51, and the fan 52 is located inside the second pressure-bearing housing 13. The motor 5 drives the rotating shaft 51, which in turn drives the fan 52. The fan 52 propels the air inside the second pressure-bearing housing 13, forming a circulating airflow to ensure uniform mixing of the air within the housing. A door 14 is hinged to the first housing 1, and an observation window 15 is provided on the door. The door 14 is used to close the first housing 1. A control panel 2 is fixedly connected to the second housing 16. The control panel 2 is electrically connected to the vacuum pump 3, the first solenoid valve 33, the second solenoid valve 35, the humidifier 4, the third solenoid valve 41, the motor 5, the compressor 6, and the heater 7. The control panel 2 is used to control the operation of the equipment.

[0021] Working principle: When using this invention, under low pressure conditions, the third solenoid valve 41 is closed, and the vacuum pump 3, the first solenoid valve 33, and the second solenoid valve 35 are opened. The vacuum pump 3 draws a vacuum, and the air in the insulation layer 12 enters the three-way pipe 32 through the first vacuum pipe 34 and the first solenoid valve 33. The air in the second pressure-bearing shell 13 enters the three-way pipe 32 through the second vacuum pipe 36 and the second solenoid valve 35. The air in the three-way pipe 32 enters the vacuum adsorption cold trap 31, and then... After filtration, the vapor is drawn into the vacuum pump 3 to prevent moisture from entering the insulation layer 12. When the operating condition is only atmospheric pressure for humidity testing, the vacuum pump 3, the first solenoid valve 33, and the second solenoid valve 35 are closed to prevent moisture from entering the insulation layer 12. The humidifier 4 and the third solenoid valve 41 are opened, and the moisture is sent into the second pressure-bearing housing 13 through the moisture delivery pipeline 42. The first pressure-bearing housing 11 and the second pressure-bearing housing 13 are used to improve the pressure-bearing capacity of the first housing 1, and the door 14 is used to seal the first housing. The casing 1 and observation window 15 are used for easy observation of the interior of the second pressure-bearing casing 13. The second casing 16 is the equipment room. The control panel 2 is used to control the operation of the equipment. The motor 5 is used to drive the rotating shaft 51, which drives the impeller 52. The impeller 52 is used to push the air flow in the second pressure-bearing casing 13 to form a circulating airflow, so that the air in the second pressure-bearing casing 13 is evenly mixed. The refrigerant inside the evaporator 62 evaporates in a low-pressure environment, absorbing the heat of the surrounding air, thereby achieving the effect of cooling the interior of the second pressure-bearing casing 13. After evaporation, the refrigerant changes from liquid to gas. The compressor 6 draws in the low-temperature, low-pressure gaseous refrigerant from the evaporator 62 and then compresses it to increase its pressure and temperature, turning it into a high-temperature, high-pressure gaseous refrigerant, creating conditions for the liquefaction of the refrigerant in the condenser 61. The condenser 61 is used for heat dissipation of the refrigerant. The heat dissipation port 17 is used for ventilation and heat dissipation of the condenser 61. The heater 7 is used to heat the interior of the second pressure-bearing casing 13.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dual-condition test chamber comprising a first housing (1), characterized in that: A first pressure-bearing shell (11) is fixedly connected inside the first housing (1). A heat insulation layer (12) is fixedly connected inside the first pressure-bearing shell (11). A second pressure-bearing shell (13) is fixedly connected inside the heat insulation layer (12). A second housing (16) is fixedly connected to the first housing (1). A vacuum pump (3) is fixedly connected inside the second housing (16). A vacuum adsorption cold trap (31) is conductively connected to the input end of the vacuum pump (3). A three-way pipe (32) is conductively connected to the input end of the vacuum adsorption cold trap (31). One input end of the pipe (32) is connected to a first solenoid valve (33), the input end of the first solenoid valve (33) is connected to a first vacuum line (34), and the first vacuum line (34) is connected to the insulation layer (12). The other input end of the three-way pipe (32) is connected to a second solenoid valve (35), the input end of the second solenoid valve (35) is connected to a second vacuum line (36), and the second vacuum line (36) is connected to the second pressure-bearing shell (13).

2. A dual condition test chamber as claimed in claim 1, wherein: A humidifier (4) is fixedly connected inside the second housing (16). The output end of the humidifier (4) is connected to a third solenoid valve (41). The output end of the third solenoid valve (41) is connected to a moisture delivery pipeline (42), and the moisture delivery pipeline (42) is connected to the second pressure-bearing housing (13).

3. A dual condition test chamber as claimed in claim 2, characterised in that: A compressor (6) is fixedly connected inside the second housing (16). A condenser (61) is connected to the output end of the compressor (6). An evaporator (62) is connected to the output end of the condenser (61). The output end of the evaporator (62) is connected to the input end of the compressor (6). The evaporator (62) is fixedly connected inside the second pressure-bearing housing (13).

4. A dual condition test chamber as claimed in claim 3, wherein: A heat dissipation vent (17) is provided on the second housing (16) at the position corresponding to the condenser (61).

5. A dual condition test chamber as claimed in claim 3, wherein: A heater (7) is fixedly connected inside the second pressure-bearing housing (13).

6. The dual-condition test chamber of claim 1, wherein: A motor (5) is fixedly connected to the first housing (1), a rotating shaft (51) is fixedly connected to the output end of the motor (5), a fan (52) is fixedly connected to the rotating shaft (51), and the fan (52) is located inside the second pressure-bearing housing (13).

7. A dual condition test chamber as claimed in claim 6, characterised in that: The first housing (1) is hinged with a door (14), and the door (14) is provided with an observation window (15).

8. The dual-condition test chamber of claim 1, wherein: The second housing (16) is fixedly connected to a control panel (2), and the control panel (2) is electrically connected to the vacuum pump (3), the first solenoid valve (33), the second solenoid valve (35), the humidifier (4), the third solenoid valve (41), the motor (5), the compressor (6) and the heater (7).

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