CN217931757U

CN217931757U - Desktop high low temperature test camera bellows

Info

Publication number: CN217931757U
Application number: CN202222227156.6U
Authority: CN
Inventors: 管玉静; 蒋志勇; 李�灿
Original assignee: Beijing Tiandiyige Technology Co ltd
Current assignee: Beijing Tiandiyige Technology Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-11-29
Anticipated expiration: 2032-08-24

Abstract

The application discloses high low temperature test camera bellows of desktop level, including shell, base, frame and the thermal-insulated bubble of setting in the frame are continuous: the shell is wrapped by the frame, the frame is fixedly connected with the base, and the heat-insulating foam and the base are enclosed to form a heat-insulating cavity; a refrigerating and heating device is embedded on the heat insulation foam; the side surface of the heat-insulating foam far away from the shell is covered with wave-absorbing foam; the refrigerating and heating device penetrates through the wave-absorbing foam and extends out. The heat insulation foam and the base are enclosed to form a heat insulation cavity, the heat insulation performance is improved, the space utilization inside the camera bellows is improved, the refrigerating and heating device is arranged for temperature configuration, the wave absorption foam is arranged on one side face, far away from the shell, of the heat insulation foam to absorb microwaves for testing the clutter generated inside the camera bellows, the clutter in the testing process is reduced, the testing accuracy is improved, meanwhile, a camera chamber environment is formed through the wave absorption material and the wave absorption coating, and the small-size microwave antenna radio frequency performance online test is realized.

Description

Desktop high low temperature test camera bellows

Technical Field

The application relates to the technical field of antenna testing, in particular to a desktop high and low temperature testing camera bellows.

Background

When carrying out the test of microwave antenna product, need use high cryogenic equipment to test, present high cryogenic equipment size generally has 2000mm 1500mm about 1200mm, and the testing arrangement volume is too big when measuring to small-size antenna, and equipment area is great, can not realize the test environment of desktop level, does not have a testing arrangement that can be used for the laboratory desktop when especially carrying out experimental testing to small-size antenna.

The existing high-low temperature camera bellows is poor in heat preservation performance, the heat insulation cover is usually made of a medium material which is transparent to waves, resistant to high and low temperatures and has certain strength and stability, the camera bellows space can be occupied, extra heat insulation treatment is needed, the internal space of the camera bellows is difficult to change, when a small microwave product is tested, the extra space needs to be heated or refrigerated, and therefore energy waste can be caused.

When high and low temperature tests are carried out in high and low temperature equipment, only on-line tests of power supply or control signals can be generally carried out, clutter is large in the test process, the test result is easily influenced, and the measurement accuracy is low.

The microwave absorbing foam is not arranged in high-low temperature equipment, and a darkroom environment required by the antenna radio frequency performance test cannot be formed, so that the small-size microwave antenna radio frequency performance online test cannot be realized.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will be solved is that current high low temperature test equipment thermal insulation performance is poor, the clutter is big, lead to measuring accuracy low, can not realize small-size microwave antenna radio frequency performance on-line measuring, the purpose is in providing a desktop high low temperature test camera bellows, through setting up the base, the framework is continuous with the thermal-insulated bubble of setting in the framework, thermal-insulated bubble is continuous and the base encloses to close and forms a heat preservation cavity and improves thermal insulation performance, improve the space utilization to the camera bellows inside, it carries out the microwave absorption to the clutter to set up the continuous microwave absorption of absorbing bubble, reduce the clutter in the test procedure, improve the test accuracy, through absorbing material and absorbing coating, form the darkroom environment, realize small-size microwave antenna radio frequency performance on-line measuring.

The application is realized by the following technical scheme:

the utility model provides a high low temperature test camera bellows of desktop, includes shell, base, frame and the thermal-insulated bubble cotton of setting in the frame:

the shell is wrapped by the frame, the frame is fixedly connected with the base, and the heat-insulating foam and the base are enclosed to form a heat-insulating cavity;

a refrigerating and heating device is embedded on the heat-insulating foam;

the side surface of the heat insulation foam far away from the shell is covered with wave absorbing foam;

the refrigerating and heating device penetrates through the wave-absorbing foam and extends out.

This application is through setting up the base, framework and the thermal-insulated bubble of setting in the framework are continuous, thermal-insulated bubble is continuous and is enclosed to close with the base and form a heat preservation cavity, the heat preservation performance is improved, it insulates against heat to reduce the additional thermal-insulated medium that uses, improve the space utilization to the camera bellows inside, through setting up the configuration that the refrigeration heating device carries out the required temperature of high low temperature experiment, through setting up the clutter that ripples bubble is continuous to test the inside production of camera bellows and carry out the microwave absorption at the continuous side of keeping away from the shell in thermal-insulated bubble, reduce the clutter in the test procedure, improve the test accuracy, simultaneously through absorbing material and absorbing coating, form the darkroom environment, realize small-size microwave antenna radio frequency performance on-line test.

Further, the refrigeration and heating device comprises internal cold heat exchange teeth, refrigeration and heating fins and an external heat dissipation device:

the internal cold and heat exchange teeth and the refrigeration and heating sheets are respectively arranged on two side surfaces of the heat insulation foam, and the internal cold and heat exchange teeth are arranged in the darkroom;

the other end of the refrigeration and heating sheet connected with the heat insulation foam is connected with an external heat dissipation device.

Set up inside cold and hot exchange tooth and be used for guaranteeing not only ventilation but also keep indoor temperature, humidity stable, set up outside heat abstractor and be used for dispelling the heat to the refrigeration heating piece, improve heat exchange efficiency.

Furthermore, the refrigeration and heating piece comprises a semiconductor refrigeration piece and an alumina ceramic heating piece, the edge part of the refrigeration and heating piece is fixedly connected with the internal cold and heat exchange teeth, and heat-conducting silica gel is filled between the middle part of the refrigeration and heating piece and the internal heat dissipation teeth. The heat conduction efficiency is improved, and the resource waste is reduced.

Further, the external heat dissipation device comprises a plurality of external fans and external heat dissipation teeth, the external heat dissipation teeth wrap the plurality of external fans, and heat conduction pads are filled between the external heat dissipation teeth and the semiconductor refrigeration pieces. The heat conducting pad is arranged, so that air between the external heat radiating teeth and the semiconductor refrigerating sheet can be completely exhausted in use, full contact is achieved, and the heat radiating effect is improved.

Furthermore, a side surface of the internal cold and heat exchange tooth, which is far away from the refrigerating and heating piece, is coated with a wave absorbing material. Because the cold and heat exchange teeth are installed, the wave absorbing foam cannot be installed, and therefore in order to absorb waves, the wave absorbing coating is sprayed on the internal cold and heat exchange teeth on the side surface and the heat insulation foam on the side surface.

Furthermore, an opening and closing door is formed by movably connecting one end face of the box body with the box body, and a test product placing opening is formed in the opening and closing door. Set up the test product and place the mouth and survey and establish the product and place, guarantee to survey and establish stability.

Furthermore, the number of the refrigerating and heating devices is at least two, and the two refrigerating and heating devices are respectively arranged on two side surfaces of the opening and closing door. Two refrigerating and heating devices are arranged, and the efficiency of temperature change during testing is improved.

Furthermore, an antenna is arranged on the opposite side face of the opening and closing door, the antenna penetrates through the darkroom and is used for being in signal connection with the microwave antenna radio frequency test circuit. The antenna is arranged to be in signal connection with the microwave antenna radio frequency test circuit and used for performing microwave antenna radio frequency test on a test product.

Furthermore, an internal fan and a temperature sensor are arranged above the wave-absorbing foam arranged on the base. The internal fan and the temperature sensor are in signal connection with an internal circuit of the box body. Through being connected with the internal circuit signal of box to realize the signal transmission between inside fan and temperature sensor and the internal circuit of box.

Furthermore, the power supply control box is further included and is in signal connection with the circuit inside the box body. The power supply control box is arranged to provide a signal control level, so that the working stability of the refrigerating and heating device, the internal fan and the temperature sensor is ensured.

Compared with the prior art, the application has the following advantages and beneficial effects:

through setting up the base, the framework with set up the thermal-insulated bubble in the framework continuously, thermal-insulated bubble is continuous and is enclosed to close with the base and form a heat preservation cavity, improve thermal insulation performance, it insulates against heat to reduce the additional thermal-insulated medium that uses, improve the space utilization to the inside of camera bellows, through setting up the configuration that the refrigeration heats the device and carry out the required temperature of high low temperature experiment, through set up the continuous clutter that produces of ripples bubble of inhaling to test the inside clutter of camera bellows and carry out the microwave absorption in thermal-insulated bubble one side of keeping away from the shell, reduce the clutter in the test procedure, improve the test accuracy.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the disclosure, are incorporated in and constitute a part of this disclosure, and do not constitute a limitation on the embodiments of the disclosure. In the drawings:

FIG. 1 is a schematic overall structure diagram in an embodiment of the present application;

FIG. 2 is a schematic overall structure split view in the embodiment of the present application;

FIG. 3 is a cross-sectional view of an embodiment of the present application;

FIG. 4 is a top view of an embodiment of the present application;

FIG. 5 is a side view of an embodiment of the present application;

FIG. 6 is a rear view of an embodiment of the present application;

FIG. 7 is a partial schematic structural view of an embodiment of the present application;

fig. 8 is a front view in an embodiment of the present application.

Reference numbers and corresponding part names in the drawings:

10. a housing; 20. a base; 21. an internal fan; 22. a temperature sensor; 30. a frame; 40. heat insulation foamed plastic; 50. a refrigerating and heating device; 51. internal cold heat exchange teeth; 52. refrigerating and heating sheets; 521. a semiconductor refrigerating sheet; 522. an alumina ceramic heating sheet; 53. an external heat sink; 531. an external fan; 532. an external heat dissipating tooth; 60. absorbing the wave foam; 70. opening and closing the door; 71. testing the product placement port; 80. an antenna; 90. and a power supply control box.

Detailed Description

To make the purpose, technical solution and advantages of the present application more apparent, the present application is further described in detail below with reference to examples and drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present application and are not used as limitations of the present application.

Example 1

As shown in fig. 1 and 2, the present embodiment provides a desktop high and low temperature test dark box, which comprises a housing 10, a base 20, a frame 30, and a heat insulation foam 40 disposed in the frame 30:

the shell 10 wraps the frame 30 and the heat insulation foam 40, the shell 10 is fixedly connected with the base 20, and the heat insulation foam 40 and the base 20 are enclosed to form a heat insulation cavity;

a refrigerating and heating device 50 is embedded on the heat insulation foam 40;

the side surface of the heat insulation foam 40 far away from the shell 10 is covered with wave-absorbing foam 60;

the refrigerating and heating device 50 passes through the wave-absorbing foam 60 and extends out.

Through setting up base 20, framework and the thermal-insulated bubble silk floss 40 of setting in the framework, thermal-insulated bubble silk floss 40 encloses with base 20 and closes and form a heat preservation cavity, the heat preservation performance is improved, it insulates against heat to reduce the additional use heat-proof medium, improve the space utilization inside the camera bellows, carry out the configuration of the required temperature of high low temperature experiment through setting up refrigeration heating device 50, through setting up the continuous 60 of ripples bubble of inhaling in the continuous side of keeping away from shell 10 at thermal-insulated bubble and carrying out the microwave absorption to the clutter that tests the inside production of camera bellows, reduce the clutter in the test procedure, improve the test accuracy, simultaneously through absorbing material and absorbing coating, form the camera bellows environment, realize small-size microwave antenna radio frequency performance on-line test.

As shown in fig. 3 to 5, the cooling and heating device 50 includes internal cooling and heating teeth 51, cooling and heating fins 52, and an external heat sink 53:

the internal cold heat exchange teeth 51 and the refrigerating and heating sheets 52 are respectively arranged on two side surfaces of the heat insulation foamed plastic 40, and the internal cold heat exchange teeth 51 are arranged in the darkroom;

the other end of the refrigeration and heating sheet 52 connected with the heat insulation foam 40 is connected with an external heat dissipation device 53, the heat insulation foam 40 is provided with a mounting hole for mounting the refrigeration and heating sheet 52, and the refrigeration and heating sheet 52 is fixedly connected with the external heat dissipation device 53 through the mounting hole. The internal cold-heat exchange teeth 51 are arranged to ensure ventilation and keep indoor temperature and humidity stable, and the external heat dissipation device 53 is arranged to dissipate heat of the refrigerating and heating fins 52, so that heat exchange efficiency is improved.

The refrigeration and heating sheet 52 comprises a semiconductor refrigeration sheet 521 and an alumina ceramic heating sheet 522, the edge part of the refrigeration and heating sheet 52 is fixedly surrounded with the internal cold-heat exchange teeth 51 to form a cavity in the middle, and heat-conducting silica gel is filled between the middle part of the refrigeration and heating sheet 52 and the internal heat-radiating teeth to improve the heat-conducting efficiency and reduce the resource waste.

The external heat sink 53 includes a plurality of external fans 531 and external heat dissipation teeth 532, the external heat dissipation teeth 532 are disposed to wrap the plurality of external fans 531, and a thermal pad is filled between the external heat dissipation teeth 532 and the semiconductor chilling plates 521. The heat conducting pad is arranged to completely exhaust air between the external heat dissipation teeth 532 and the semiconductor chilling plates 521 during use, so that sufficient contact is achieved, and the heat dissipation effect is improved. As shown in fig. 6, the external fans 531 are provided in four, the four external fans 531 are arranged in a matrix, and the external fan heating teeth are provided in a rectangular structure having four recesses for receiving the external fans 531.

One side surface of the internal cold heat exchange teeth 51 far away from the refrigerating and heating sheet 52 and the heat insulation foam 40 around the position where the internal cold heat exchange teeth 51 are arranged are coated with wave-absorbing materials. Because the cold and heat exchange teeth are installed, the wave absorbing foam 60 cannot be installed, and therefore, in order to absorb waves, the wave absorbing coating needs to be sprayed on the internal cold and heat exchange teeth 51 on the side surface and the heat insulation foam on the side surface.

As shown in fig. 7 and 8, the box body is arranged in a rectangular structure, and the box body comprises a bottom surface, a top surface, a front end surface, a rear end surface, a left side surface and a right side surface:

the front end face of the box body is movably connected with the box body to form an opening and closing door 70, the front end face is hinged with the box body, a test product placing opening 71 is formed in the opening and closing door 70, and the product placing opening 71 penetrates through the heat insulation foam 40 and the wave absorption foam 60. Set up test product and place mouth 71 and survey and establish the product and place, guarantee to survey and establish stability.

The number of the refrigerating and heating devices 50 is at least two, the two refrigerating and heating devices 50 are respectively disposed on the left and right sides of the opening and closing door 70, and the two refrigerating and heating devices 50 are disposed opposite to each other. Two refrigerating and heating devices 50 are provided to improve the efficiency of temperature change during testing.

The rear end face of the opening and closing door 70 is provided with an antenna 80, the antenna 80 penetrates through the rear end face, and the antenna 80 is used for being in signal connection with a radio frequency test circuit of the microwave antenna 80. The antenna 80 is arranged in signal connection with a microwave antenna 80 radio frequency test circuit for performing a microwave antenna 80 radio frequency test on a test product.

The top surface, the front end surface, the rear end surface, the left side surface and the right side surface of the box body are all provided with heat insulation foam 40, the bottom surface, the top surface, the front end surface and the rear end surface are all provided with wave absorbing foam 60, and the left side surface and the right side surface are provided with the refrigerating and heating devices 50, so that the heat insulation foam 40 and the internal cold-heat exchange teeth 51 of the left side surface and the right side surface are coated with wave absorbing coating.

In some possible embodiments, the base 20 is provided with an internal fan 21 and a temperature sensor 22 above the foam absorbing material 60. The internal fan 21 and the temperature sensor 22 are in signal connection with the internal circuitry of the housing. The signal transmission between the internal fan 21 and the temperature sensor 22 and the internal circuit of the case is realized by signal connection with the internal circuit of the case. An internal fan 21 for internal air convection and a temperature sensor 22 for monitoring the internal air temperature.

In some possible embodiments, a power supply control box 90 is further included, and the power supply control box 90 is in signal connection with the internal circuit of the box body. The power supply control box 90 is provided to provide a signal control level to ensure the operation stability of the cooling and heating apparatus 50, the internal fan 21, and the temperature sensor 22. The outer side of the box body is provided with a socket connected with the power supply control box 90 and a control panel used for displaying data and acquiring data.

In some possible embodiments, the case size is 400mm 240mm, and the test can be performed on a laboratory test table.

When the refrigeration system adopts the semiconductor refrigeration piece 521 to refrigerate the air in the box body, the semiconductor refrigeration piece 521 utilizes the Peltier effect of semiconductor materials, and when direct current passes through a couple formed by connecting two different semiconductor materials in series, heat can be absorbed and released at two ends of the couple respectively, so that the refrigeration purpose can be realized. The temperature difference between the end surfaces of the semiconductor refrigerating sheet 521 at the cold end and the hot end can reach 60 ℃. When the temperature of the external radiating teeth 532 is controlled at 20 ℃, the internal low-temperature environment can be close to-35 ℃.

Adopt the alumina ceramics to heat piece 522 during this application heats, heat to the air in the box, the inside high density tungsten thick liquid printing heating material that adopts of alumina ceramics heating piece 522 adopts 1650 ℃ high temperature and alumina ceramics to sinter, can realize dry combustion method surface 100 ℃ -320 ℃.

The temperature sensor 22 is used for temperature detection in temperature control, and the power supply control box 90 regulates and controls the power supply voltages of the internal cold heat exchange teeth 51, the refrigerating and heating sheets 52 and the external heat dissipation device 53 in real time according to the detected temperature, so that the temperatures of the semiconductor refrigerating sheet 521 and the alumina ceramic heating sheets 522 are changed, and the internal temperature heat dissipation of the box body is stabilized.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A desktop high-low temperature test camera box is characterized by comprising a shell (10), a base (20), a frame (30) and a heat insulation foam (40) arranged in the frame (30):

the shell (10) is arranged by wrapping a frame (30), the frame (30) is fixedly connected with the base (20), and the heat-insulating foam (40) and the base (20) are enclosed to form a heat-insulating cavity;

a refrigerating and heating device (50) is embedded on the heat insulation foam (40);

the side surface of the heat insulation foam (40) far away from the shell (10) is covered with wave-absorbing foam (60);

the refrigerating and heating device (50) penetrates through the wave-absorbing foam (60) and extends out.

2. The desktop high and low temperature testing camera box of claim 1, wherein the cooling and heating device (50) comprises internal cooling and heating exchange teeth (51), cooling and heating fins (52) and an external heat dissipation device (53):

the internal cold-heat exchange teeth (51) and the refrigerating and heating sheets (52) are respectively arranged on two side surfaces of the heat-insulating foamed plastic (40), and the internal cold-heat exchange teeth (51) are arranged in the darkroom;

the other end of the refrigeration and heating sheet (52) connected with the heat insulation foam (40) is connected with an external heat dissipation device (53).

3. The desktop high and low temperature test dark box as claimed in claim 2, wherein the refrigerating and heating sheet (52) comprises a semiconductor refrigerating sheet (521) and an alumina ceramic heating sheet (522), the edge part of the refrigerating and heating sheet (52) is fixedly connected with the internal cold and heat exchange teeth (51), and heat conducting silica gel is filled between the middle part of the refrigerating and heating sheet (52) and the internal heat dissipation teeth.

4. The desktop high and low temperature test camera box as claimed in claim 2, wherein the external heat dissipation device (53) comprises a plurality of external fans (531) and external heat dissipation teeth (532), the external heat dissipation teeth (532) are wrapped around the plurality of external fans (531), and a heat conduction pad is filled between the external heat dissipation teeth (532) and the semiconductor chilling plates (521).

5. The desktop high and low temperature test dark box according to claim 2, wherein one side of the internal cold and heat exchange teeth (51) away from the refrigerating and heating sheet (52) is coated with a wave-absorbing material.

6. The desk-top high and low temperature test dark box of claim 2, wherein an end face of the box body is movably connected with the box body to form an opening and closing door (70), and a test product placing opening (71) is formed in the opening and closing door (70).

7. The desktop high and low temperature testing dark box as claimed in claim 6, wherein at least two refrigerating and heating devices (50) are provided, and the two refrigerating and heating devices (50) are respectively provided on two sides of the opening and closing door (70).

8. The desk-top high and low temperature test camera bellows as claimed in claim 6, wherein an antenna (80) is arranged on the opposite side of the opening and closing door (70), the antenna (80) is arranged through the camera bellows, and the antenna (80) is used for being in signal connection with a microwave antenna (80) radio frequency test circuit.

9. The desk-top high-low temperature testing dark box of claim 1, characterized in that an internal fan (21) and a temperature sensor (22) are arranged above a wave-absorbing foam (60) arranged on the base (20), and the internal fan (21) and the temperature sensor (22) are in signal connection with an internal circuit of the box body.

10. The desk-top high and low temperature test camera bellows of claim 1, further comprising a power supply control box (90), wherein the power supply control box (90) is in signal connection with an internal circuit of the bellows.