A preheating device for near infrared spectrometer

Abstract

The utility model relates to the technical field of preheating devices. In order to solve the disadvantages in the prior art that the heat preservation ring always covers the surface of the InGaAs detector, during long-term detection work, the internal temperature of the device will eventually exceed the threshold, affecting the normal operation of the device and reducing its service life, a preheating device for a near-infrared spectrometer is proposed, which includes an equipment box. An InGaAs detector body is installed in the equipment box. C-shaped frames are arranged on both sides of the InGaAs detector body. The two C-shaped frames are symmetrically arranged, and electric heating plates are embedded on the surfaces. A plurality of micro fans are respectively installed on one adjacent side of the two C-shaped frames. In the utility model, a closed environment is formed by the two C-shaped frames. Combining the electric heating plates and the micro fans enables the rapid heating of the inside of the C-shaped frames, realizing the rapid preheating of the InGaAs detector body. At the same time, when the temperature is high, the two C-shaped frames are separated, and combining the micro fans and the heat dissipation windows accelerates the heat dissipation of the InGaAs detector body, enabling it to maintain a good working temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of preheating devices, in particular to a preheating device for a near-infrared spectrometer. Background Art

[0002] Near-infrared spectrometers generally use InGaAs detectors, which have the characteristics of high detection rate and low dark current, and can work stably at room temperature. Usually, a thermoelectric cooler (TE) is integrated in the component to provide a suitable temperature for the chip. The time required for the InGaAs detector to reach room temperature is generally solved by starting the instrument in advance to preheat.

[0003] A near-infrared spectrometer preheating device in the prior art (publication number: CN214472759U) can help the InGaAs detector to quickly heat up and reach a suitable temperature and quickly enter a working state by setting a heating element, a heat preservation ring, a digital temperature control chip and a timing switch module to cooperate with each other, thereby saving a lot of preheating time and improving work efficiency. However, the heat preservation ring of the device is always covered on the surface of the InGaAs detector. After a long period of detection work, the internal temperature of the device will eventually exceed the threshold, affecting the normal operation of the device and reducing its service life. Therefore, it is urgent to design a near-infrared spectrometer preheating device that can flexibly adjust the temperature. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that a heat preservation ring is always covered on the surface of an InGaAs detector, and the internal temperature of the device will eventually exceed a threshold value after long-term detection work, thus affecting the normal operation of the device and reducing its service life, and a near-infrared spectrometer preheating device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A near-infrared spectrometer preheating device comprises an equipment box, an InGaAs detector body is installed in the equipment box, U-shaped frames are provided on both sides of the InGaAs detector body, the two U-shaped frames are symmetrically arranged, and electric heating plates are embedded on the surfaces of the two U-shaped frames, a plurality of micro fans are respectively installed on adjacent sides of the two U-shaped frames, sliders are fixedly installed on the bottoms of the two U-shaped frames, and the two sliders are slidably installed on the bottom of the equipment box.

[0007] As a further technical solution of the utility model, heat dissipation windows are provided on two opposite side surfaces of the equipment box, a slide groove is provided in each of the heat dissipation windows, and a side window mechanism is provided in each of the heat dissipation windows.

[0008] As a further technical solution of the present utility model, the side window mechanism includes a baffle and a push rod. The push rod is fixedly installed on one side of the baffle close to the inside of the equipment box. The push rod is slidably installed in the chute, and rubber blocks are fixedly installed on the adjacent sides of the push rod and the corresponding U-shaped frame.

[0009] As a further technical solution of the present utility model, a cover plate is hinged on the top of the equipment box. Two brackets are symmetrically and fixedly installed in the equipment box. Two tension springs are fixedly installed on one side of each bracket close to the equipment box. The other ends of the two tension springs are fixedly installed on one side of the adjacent baffle.

[0010] As a further technical solution of the present utility model, a bidirectional lead screw is rotatably installed at the bottom inside the equipment box. The two ends of the bidirectional lead screw respectively pass through the outer surfaces of two sliders and are threadedly connected to them. A servo motor is fixedly installed at the bottom inside the equipment box. The output end of the servo motor is fixedly installed at one end of the bidirectional lead screw.

[0011] As a further technical solution of the present utility model, a temperature sensor is installed on the top of the InGaAs detector body, and sealing strips are fixedly installed on the surfaces of the adjacent ends of the two U-shaped frames.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. By arranging two U-shaped frames to cover the InGaAs detector body, a relatively closed environment is formed. When preheating, the electric heating plate and the micro fan are started, so that the temperature inside the U-shaped frame rises rapidly, improving the preheating efficiency of the equipment;

[0014] 2. By arranging a temperature sensor to monitor the temperature on the surface of the InGaAs detector body in real time. When the temperature continues to rise, the servo motor is started to drive the bidirectional lead screw to rotate, and then drive the two U-shaped frames to slide towards both sides inside the equipment box, releasing the InGaAs detector body to cool itself. When the temperature is still rising or the self-cooling effect is not good, the two U-shaped frames slide to the extreme on both sides, pushing the two side window mechanisms to open the heat dissipation window, and at the same time starting the micro fan to accelerate the heat dissipation of the InGaAs detector body, avoiding continuous temperature increase from damaging the InGaAs detector body and reducing its service life, and at the same time improving the flexibility of the equipment to control the temperature. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of a preheating device for a near-infrared spectrometer proposed by the present utility model;

[0016] Figure 2 is a schematic internal structural diagram of a preheating device for a near-infrared spectrometer proposed by the present utility model;

[0017] Figure 3 is Figure 2 Schematic enlarged structure diagram of part A

[0018] Figure 4 Schematic structure diagram of the equipment box of a preheating device for a near-infrared spectrometer proposed by the present utility model

[0019] In the figure: 1, equipment box; 2, U-shaped frame; 3, sealing strip; 4, electric heating plate; 5, bidirectional lead screw; 6, servo motor; 7, bracket; 8, tension spring; 9, side window mechanism; 10, slider; 11, InGaAs detector main body; 12, micro fan; 13, rubber block; 14, temperature sensor; 101, cover plate; 102, heat dissipation window; 103, chute; 901, baffle; 902, push rod Specific embodiments

[0020] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations

[0023] Please refer to the attached Figure 1 - attached Figure 4, a preheating device for a near-infrared spectrometer, comprising an equipment box 1. An InGaAs detector body 11 is installed inside the equipment box 1. C-shaped frames 2 are provided on both sides of the InGaAs detector body 11. The two C-shaped frames 2 are symmetrically arranged, and electric heating plates 4 are embedded on their surfaces. A plurality of micro fans 12 are respectively installed on one adjacent side of the two C-shaped frames 2. Sliders 10 are fixedly installed at the bottoms of the two C-shaped frames 2. The two sliders 10 are slidably installed on the inner bottom of the equipment box 1. Heat dissipation windows 102 are opened on the surfaces of two opposite sides of the equipment box 1. A chute 103 is opened in each heat dissipation window 102. A side window mechanism 9 is provided in each heat dissipation window 102. The side window mechanism 9 includes a baffle 901 and a push rod 902. The push rod 902 is fixedly installed on the side close to the inside of the equipment box 1 of the baffle. The push rod 902 is slidably installed in the chute 103. Rubber blocks 13 are fixedly installed on one adjacent side of the push rod 902 and the corresponding C-shaped frame 2. A cover plate 101 is hinged to the top of the equipment box 1. Two brackets 7 are symmetrically and fixedly installed inside the equipment box 1. Two tension springs 8 are fixedly installed on one side of each bracket 7 close to the equipment box 1. The other ends of the two tension springs 8 are fixedly installed on one side of the adjacent baffle 901.

[0024] When in use, the InGaAs detector body 11 is covered by arranging the two C-shaped frames 2 to form a relatively enclosed environment. When preheating, the electric heating plate 4 and the micro fans 12 are started, so that the temperature inside the C-shaped frames 2 rises rapidly, improving the preheating efficiency of the equipment.

[0025] The micro fans 12 are installed inside the C-shaped frames 2, and the micro fans 12 are not communicated with the other side of the C-shaped frames 2. When the temperature continues to rise, the servo motor 6 is started to drive the bidirectional lead screw 5 to rotate, and then the two C-shaped frames 2 are driven to slide towards both sides inside the equipment box 1, releasing the InGaAs detector body 11 to cool itself. When the temperature is still rising or the self-cooling effect is not good, the two C-shaped frames 2 slide extremely towards both sides, and the two pairs of rubber blocks 13 abut against each other, pushing the two side window mechanisms 9 to open the heat dissipation windows 102. At the same time, the micro fans 12 are started to accelerate the heat dissipation of the InGaAs detector body 11, avoiding continuous temperature increase from damaging the InGaAs detector body 11 and reducing its service life, and improving the flexibility of the equipment to control the temperature at the same time.

[0026] In this embodiment, a bidirectional lead screw 5 is rotatably installed on the inner bottom of the equipment box 1. The two ends of the bidirectional lead screw 5 respectively pass through the outer surfaces of the two sliders 10 and are threadedly connected thereto. A servo motor 6 is fixedly installed on the inner bottom of the equipment box 1. The output end of the servo motor 6 is fixedly installed with one end of the bidirectional lead screw 5. A temperature sensor 14 is installed on the top of the InGaAs detector body 11. Sealing strips 3 are fixedly installed on the surfaces of one adjacent end of the two C-shaped frames 2.

[0027] When in use, the bidirectional lead screw 5 is provided with two groups of symmetrical thread grooves, which can simultaneously drive the two sliders 10 to slide toward or away from each other when rotating, thereby controlling the closing of the two V-shaped frames 2. A sealing strip 3 is provided to prevent the two V-shaped frames 2 from collision and damage when closed. A temperature sensor 14 is provided to detect the temperature of the InGaAs detector body 11 in real time, so as to facilitate timely corresponding operations, adjust the temperature inside the equipment, avoid high-temperature damage to the equipment, and increase the service life of the equipment.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A near-infrared spectrometer preheating device, comprising an equipment box (1), characterized in that: An InGaAs detector body (11) is installed inside the equipment box (1). C-shaped frames (2) are provided on both sides of the InGaAs detector body (11). The two C-shaped frames (2) are symmetrically arranged, and electric heating plates (4) are embedded on their surfaces. A plurality of miniature fans (12) are respectively installed on one adjacent side of the two C-shaped frames (2). Sliders (10) are fixedly installed at the bottoms of the two C-shaped frames (2), and the two sliders (10) are slidably installed on the inner bottom of the equipment box (1).

2. A near infrared spectrometer preheating device according to claim 1, characterized in that: Heat dissipation windows (102) are opened on the surfaces of two opposite sides of the equipment box (1). A chute (103) is opened in each heat dissipation window (102), and a side window mechanism (9) is provided in each heat dissipation window (102).

3. A near infrared spectrometer preheating device according to claim 2, characterized in that: The side window mechanism (9) includes a baffle (901) and a push rod (902). The push rod (902) is fixedly installed on the side close to the inside of the equipment box (1) of the baffle. The push rod (902) is slidably installed in the chute (103). Rubber blocks (13) are fixedly installed on one adjacent side of the push rod (902) and the corresponding C-shaped frame (2).

4. A near infrared spectrometer preheating device according to claim 3, characterized in that: A cover plate (101) is hinged to the top of the equipment box (1). Two brackets (7) are symmetrically and fixedly installed inside the equipment box (1). Two tension springs (8) are fixedly installed on one side of each bracket (7) close to the equipment box (1). The other ends of the two tension springs (8) are fixedly installed on one side of the adjacent baffle (901).

5. A near infrared spectrometer preheating device according to claim 4, characterized in that: A bidirectional lead screw (5) is rotatably installed on the inner bottom of the equipment box (1). The two ends of the bidirectional lead screw (5) respectively pass through the outer surfaces of the two sliders (10) and are threadedly connected thereto. A servo motor (6) is fixedly installed on the inner bottom of the equipment box (1), and the output end of the servo motor (6) is fixedly installed at one end of the bidirectional lead screw (5).

6. A near infrared spectrometer preheating device according to claim 1, characterized in that: A temperature sensor (14) is installed on the top of the InGaAs detector body (11). Sealing strips (3) are fixedly installed on the surfaces of one adjacent end of the two C-shaped frames (2).

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