Semiconductor refrigerator temperature detection device

Abstract

The utility model provides a temperature detection device for a semiconductor cooler. The temperature detection device comprises a bottom box, a temperature sensor, a constant current source circuit board and an instrument panel, the upper surface of the box body of the bottom box is provided with a carrier plate for placing a to-be-tested semiconductor cooler; a pressing plate capable of moving in the vertical direction is further arranged on the upper surface of the box body of the bottom box; the temperature sensor is arranged at the bottom of the pressing plate and corresponds to the position of the semiconductor cooler to be tested; the constant current source circuit board is arranged on the bottom surface of the bottom box and is used for supplying power to the to-be-tested semiconductor cooler; the instrument panel is arranged on the front face of the bottom box and used for visually displaying the temperature value measured by the temperature sensor. During measurement, a human body does not need to contact the detector for a long time, the influence of the human body temperature on the resistance value of the detector is avoided, the working refrigeration temperature of the semiconductor cooler is visually displayed through the digital thermometer, and the problems that a semiconductor cooler temperature detection device in the prior art is low in detection precision and inconvenient to operate are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor refrigeration control, and more particularly to a temperature detection device for a semiconductor refrigerator. Background Art

[0002] A semiconductor refrigerator (TEC), also known as a thermoelectric refrigerator, is made using the Peltier effect of semiconductor materials. When a semiconductor refrigerator works, the maximum temperature difference under a fixed current directly affects the application effect of the components. The purchased semiconductor refrigerators must be inspected one by one to eliminate those with a maximum temperature difference not meeting the usage requirements.

[0003] The existing temperature detection methods for semiconductor refrigerators are the direct measurement method or the thermocouple measurement method. The direct measurement method is to fix the detector on the workbench, connect the constant current source, and judge the refrigeration effect through the direct subjective feeling of the finger. The thermocouple measurement method is to place the product to be measured on the workbench and fix it with insulating tape, measure the temperature of the cold reading surface of the semiconductor refrigerator using a thermocouple, measure the resistance value of the thermocouple with a digital multimeter, and obtain the temperature by looking up a table. Since the thermocouple is large in size and has poor contact with the surface of the semiconductor refrigerator, it causes a large temperature detection error; the thermocouple measurement method is cumbersome to operate and cannot directly read the temperature value, and it is necessary to look up a table to obtain it. Summary of the Utility Model

[0004] The main purpose of the present utility model is to provide a temperature detection device for a semiconductor refrigerator, so as to at least solve the problem that the direct measurement method of the semiconductor refrigerator in the prior art can only judge whether the refrigerator is working and cannot accurately display the temperature.

[0005] To achieve the above purpose, the present utility model provides a temperature detection device for a semiconductor refrigerator, including: a bottom box, a temperature sensor, a constant current source circuit board, and an instrument dashboard; a carrier plate is provided on the upper surface of the box body of the bottom box for placing the semiconductor refrigerator to be measured; a pressing plate that can move vertically is further provided on the upper surface of the box body of the bottom box, and the pressing plate is located above the carrier plate and their positions correspond; the temperature sensor is provided at the bottom of the pressing plate and corresponds to the position where the semiconductor refrigerator to be measured is located; the constant current source circuit board is provided on the bottom surface of the bottom box, and the constant current source circuit board is connected to both the power supply and the semiconductor refrigerator to be measured to supply power to the semiconductor refrigerator to be measured; the instrument dashboard is provided on the front surface of the bottom box, and the instrument dashboard is connected to both the temperature sensor and the constant current source circuit board, and the instrument dashboard is used to intuitively display the temperature value measured by the temperature sensor.

[0006] Further, the temperature detection device for a semiconductor refrigerator further includes: a pressing handle, the pressing handle is fixedly connected to the bottom box, the pressing handle is provided with a handle and a connecting rod, and the end of the connecting rod is connected to the pressing plate. The handle can rotate around the hinge between it and the connecting rod to displace the connecting rod and drive the pressing plate to displace vertically towards the carrier plate.

[0007] Further, the bottom box further includes: a needle plate, shock-absorbing springs, and slide rails; the needle plate is disposed on the upper surface of the box body of the bottom box, and a plurality of spring guides are arranged vertically on the upper surface of the needle plate; there are a plurality of shock-absorbing springs, and the plurality of shock-absorbing springs are sleeved on the plurality of spring guides one by one; there are a plurality of slide rails, and the plurality of slide rails are all arranged vertically on the upper surface of the box body; wherein, the carrier plate is disposed above the needle plate and fixedly connected to the plurality of spring guides; the pressing plate is movably disposed in the plurality of slide rails.

[0008] Further, a power interface and a power switch are disposed on the side surface of the box body of the bottom box.

[0009] Further, the instrument dashboard includes: a digital thermometer, an ammeter, and a refrigeration current adjustment knob; the digital thermometer is connected to the temperature sensor; the ammeter is connected to the constant current source circuit board; the refrigeration current adjustment knob is connected to the constant current source circuit board to adjust the output current of the constant current source circuit board.

[0010] Further, the temperature sensor adopts a PT100 temperature sensor.

[0011] A semiconductor refrigeration temperature detection device according to the technical solution of the present invention includes: a bottom box, a temperature sensor, a constant current source circuit board, and an instrument dashboard; a carrier plate is disposed on the upper surface of the box body of the bottom box for placing a semiconductor refrigeration device to be tested; a pressing plate that can move vertically is further disposed on the upper surface of the box body of the bottom box, and the pressing plate is located above the carrier plate and their positions correspond; the temperature sensor is disposed at the bottom of the pressing plate and corresponds to the position where the semiconductor refrigeration device to be tested is located; the constant current source circuit board is disposed on the bottom surface of the bottom box, and the constant current source circuit board is connected to both the power supply and the semiconductor refrigeration device to be tested to supply power to the semiconductor refrigeration device to be tested; the instrument dashboard is disposed on the front surface of the bottom box, and the instrument dashboard is connected to both the temperature sensor and the constant current source circuit board, and the instrument dashboard is used to intuitively display the temperature value measured by the temperature sensor. When measuring according to the present invention, it is not necessary for the human body to contact the detector for a long time, avoiding the influence of the human body temperature on the resistance value of the detector. The digital thermometer is used to directly display the working refrigeration temperature of the semiconductor refrigeration device. It only needs to press the handle to complete quickly and conveniently, reducing the requirements for the operator and improving the work efficiency, and solving the problems of low detection accuracy and inconvenient operation of the semiconductor refrigeration temperature detection device in the prior art. Description of the Drawings

[0012] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0013] Figure 1It is a schematic structural diagram of a temperature detection device for a semiconductor refrigerator according to an embodiment of the present utility model;

[0014] Figure 2 It is a side view of a temperature detection device for a semiconductor refrigerator according to an embodiment of the present utility model;

[0015] Figure 3 It is a top view of a temperature detection device for a semiconductor refrigerator according to an embodiment of the present utility model;

[0016] Figure 4 It is a bottom view of a temperature detection device for a semiconductor refrigerator according to an embodiment of the present utility model;

[0017] Figure 5 It is a circuit schematic diagram of a temperature detection device for a semiconductor refrigerator according to an embodiment of the present utility model.

[0018] Among them, the above-mentioned drawings include the following reference numerals:

[0019] 10, bottom box; 11, carrier plate; 12, pressing plate; 13, needle plate; 14, shock-absorbing spring; 15, slide rail; 16, power supply interface; 17, power switch; 20, temperature sensor; 30, constant current source circuit board; 31, constant current source output interface; 40, instrument dashboard; 41, digital thermometer; 42, ammeter; 43, refrigeration current adjustment knob; 50, pressing handle; 60, semiconductor refrigerator to be measured. Specific embodiments

[0020] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0021] The present utility model provides a temperature detection device for a semiconductor refrigerator, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, it includes: a bottom box 10, a temperature sensor 20, a constant current source circuit board 30, and an instrument dashboard 40; a carrier plate 11 is provided on the upper surface of the box body of the bottom box 10 for placing the semiconductor cooler 60 to be tested; a pressing plate 12 that can move vertically is also provided on the upper surface of the box body of the bottom box 10. The pressing plate 12 is located above the carrier plate 11 and their positions correspond to each other; the temperature sensor 20 is provided at the bottom of the pressing plate 12 and corresponds to the position where the semiconductor cooler 60 to be tested is located; the constant current source circuit board 30 is provided on the bottom surface of the bottom box 10. The constant current source circuit board 30 is connected to both the power supply and the semiconductor cooler 60 to be tested to supply power to the semiconductor cooler 60 to be tested; the instrument dashboard 40 is provided on the front of the bottom box 10. The instrument dashboard 40 is connected to both the temperature sensor 20 and the constant current source circuit board 30. The instrument dashboard 40 is used to intuitively display the temperature value measured by the temperature sensor 20.

[0022] During specific implementation, the housing of the bottom box 10 adopts a finished ABS plastic chassis, which is durable; the carrier plate 11 adopts plexiglass, which is easy to process; the connection between the constant current source circuit board 30 and the semiconductor cooler 60 to be tested uses ultra-soft silicone wires and alligator clips that are soft and not easy to break, and the operation is convenient.

[0023] Furthermore, the semiconductor cooler temperature detection device further includes: a pressing handle 50, the pressing handle 50 is fixedly connected to the bottom box 10. The pressing handle 50 is provided with an operating handle and a connecting rod. The end of the connecting rod is connected to the pressing plate 12. The operating handle can rotate around the hinge with the connecting rod as the center so that the displacement of the connecting rod drives the pressing plate 12 to move vertically towards the carrier plate 11. During specific implementation, the pressing handle 50 adopts a push-pull type clamp compactor.

[0024] Furthermore, the bottom box 10 further includes: a needle plate 13, shock-absorbing springs 14, and slide rails 15; the needle plate 13 is provided on the upper surface of the box body. A plurality of spring guide rails are arranged vertically on the upper surface of the needle plate 13; there are a plurality of shock-absorbing springs 14, and the plurality of shock-absorbing springs 14 are sleeved on the plurality of spring guide rails one by one; there are a plurality of slide rails 15, and the plurality of slide rails 15 are all arranged vertically on the upper surface of the box body; among them, the carrier plate 11 is arranged above the needle plate 13 and is fixedly connected to the plurality of spring guide rails; the pressing plate 12 is movably arranged in the plurality of slide rails 15. During specific implementation, the slide rails 15 adopt metal tracks and move smoothly. Preferably, both the semiconductor cooler 60 to be tested and the temperature sensor 20 are made of ceramic materials and are easy to crush. Arranging a plurality of slide rails 15 realizes multi-point balanced support, and adding shock-absorbing springs 14 can play a buffering role when rotating the operating handle to make the pressing plate 12 press the carrier plate 11 downward.

[0025] Furthermore, a power interface 16 and a power switch 17 are provided on the side surface of the box body of the bottom box 10. During specific implementation, the power switch 17 adopts a self-locking LED indicator switch, and the operation is flexible and reliable. Preferably, the bottom box 10 is also provided with a constant current source output interface 31.

[0026] Further, the instrument dashboard 40 includes: a digital thermometer 41, an ammeter 42, and a refrigeration current adjustment knob 43; the digital thermometer 41 is connected to the temperature sensor 20, and the digital thermometer 41 is used to visually display the operating temperature of the semiconductor refrigerator 60 to be measured; the ammeter 42 is connected to the constant current source circuit board 30, and the ammeter 42 is used to visually display the output current of the constant current source circuit board 30; the refrigeration current adjustment knob 43 is connected to the constant current source circuit board 30 to adjust the output current of the constant current source circuit board 30.

[0027] Further, the temperature sensor 20 adopts a PT100 temperature sensor. The measurement cable of the temperature sensor 20 uses a special tetrafluoro compensation wire to improve the measurement accuracy.

[0028] When the present utility model is specifically used, as Figure 5 shown, first place the semiconductor refrigerator 60 to be measured on the carrier plate 11 and use alligator clips to connect the semiconductor refrigerator 60 to be measured and the constant current source circuit board 30. Then turn on the power supply of the box body and turn on the power switch. After reading the output current of the constant current source circuit board 30 as an appropriate value through the ammeter 42 by adjusting the refrigeration current adjustment knob 43, pull down the operating handle so that the connecting rod drives the pressing plate 12 to move towards the carrier plate 11 until the temperature sensor 20 abuts against the semiconductor refrigerator 60 to be measured. After waiting for a few seconds, the operating temperature of the semiconductor refrigerator 60 to be measured can be read on the digital thermometer 41. When measuring with the present utility model, there is no need for the human body to contact the detector for a long time, avoiding the influence of the human body temperature on the resistance value of the detector. The digital thermometer 41 is used to visually display the working refrigeration temperature of the semiconductor refrigerator, and it can be quickly and conveniently completed only by pressing down the pressing handle 50, reducing the requirements for the operator and improving the work efficiency, and solving the problems of low detection accuracy and inconvenient operation of the semiconductor refrigerator temperature detection device in the prior art.

[0029] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A semiconductor refrigerator temperature detection device, characterized in that: include: A bottom box (10), wherein the upper surface of the bottom box (10) is provided with a carrier plate (11) for placing the semiconductor refrigerator (60) to be tested; the upper surface of the bottom box (10) is also provided with a pressing plate (12) movable in a vertical direction, wherein the pressing plate (12) is located above the carrier plate (11) and the positions of the two are corresponding; A temperature sensor (20), the temperature sensor (20) being arranged at the bottom of the pressing plate (12) and corresponding to the location of the semiconductor refrigerator (60) to be tested; A constant current source circuit board (30), the constant current source circuit board (30) being arranged on the bottom surface of the bottom box (10), the constant current source circuit board (30) being connected to both a power source and the semiconductor refrigerator (60) to be tested so as to supply power to the semiconductor refrigerator (60) to be tested; An instrument panel (40), the instrument panel (40) being arranged on the front side of the bottom box (10), the instrument panel (40) being connected to both the temperature sensor (20) and the constant current source circuit board (30), and the instrument panel (40) being used to visually display the temperature value measured by the temperature sensor (20).

2. The semiconductor refrigerator temperature detection device according to claim 1, characterized in that: The semiconductor refrigerator temperature detection device also includes: A pressing handle (50) is fixedly connected to the bottom box (10). The pressing handle (50) is provided with an operating handle and a connecting rod. The end of the connecting rod is connected to the pressing plate (12). The operating handle can rotate along a hinge between the operating handle and the connecting rod so that the connecting rod is displaced to drive the pressing plate (12) to move toward the carrier plate (11) in a vertical direction.

3. The semiconductor refrigerator temperature detection device according to claim 1, characterized in that: The bottom box (10) also includes: A needle plate (13), the needle plate (13) being arranged on the upper surface of the box body of the bottom box (10), and a plurality of spring guide rails being arranged on the upper surface of the needle plate (13) along the vertical direction; A shock absorbing spring (14), wherein the shock absorbing spring (14) is multiple, and the multiple shock absorbing springs (14) are sleeved on the multiple spring guide rails in a one-to-one correspondence; A slide rail (15), wherein the slide rail (15) is provided in a plurality, and the plurality of slide rails (15) are all arranged on the upper surface of the bottom box (10) in a vertical direction; Wherein, the carrier plate (11) is arranged above the needle plate (13) and is fixedly connected to the plurality of spring guide rails; The pressing plate (12) is movably arranged in the plurality of slide rails (15).

4. The semiconductor refrigerator temperature detection device according to claim 1, characterized in that: A power interface (16) and a power switch (17) are provided on the side of the box body of the bottom box (10).

5. The semiconductor refrigerator temperature detection device according to claim 1, characterized in that: The instrument panel (40) comprises: A digital thermometer (41), the digital thermometer (41) being connected to the temperature sensor (20); An ammeter (42), the ammeter (42) being connected to the constant current source circuit board (30); A refrigeration current adjustment knob (43), wherein the refrigeration current adjustment knob (43) is connected to the constant current source circuit board (30) to adjust the output current of the constant current source circuit board (30).

6. The semiconductor refrigerator temperature detection device according to claim 1, characterized in that: The temperature sensor (20) is a PT100 temperature sensor.

Images