Constant temperature system of infrared spectrometer gas chamber

Abstract

The utility model relates to the technical field of infrared spectrometer detection, in particular to a constant temperature system of an infrared spectrometer air chamber, which comprises a heat insulation box, a PTC (Positive Temperature Coefficient) heating fan and a controller, the heat preservation box comprises a box body and a heat preservation layer, the heat preservation layer covers the outer wall of the box body, and a heat preservation cavity used for containing the optical module is formed in the box body; the PTC heating fan is arranged outside the box body and used for adjusting the temperature in the heat preservation cavity. The controller is electrically connected with the PTC heating fan and used for controlling the operation state of the PTC heating fan. The heat preservation cavity can be filled with hot air generated by the PTC heating fan, so that the air chamber is heated more uniformly, and the heat transfer efficiency is improved. The PTC heating fan has high adjustability and is matched with the controller, so that temperature control in the heat preservation cavity is more flexible. And meanwhile, real-time adjustment can be carried out according to needs, and it is ensured that the air chamber can rapidly reach and keep the needed temperature under different working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of infrared spectrometer detection, in particular to a constant temperature system of an infrared spectrometer gas chamber. Background Art

[0002] Infrared spectrometer is an instrument that uses the absorption characteristics of substances to infrared radiation of different wavelengths to analyze molecular structure and chemical composition. Infrared spectrometers used for gaseous substance analysis generally include a gas chamber. In order to increase the volatility of the sample and make it easier to form spectral peaks, the gas chamber generally needs to be heated.

[0003] In the prior art, the air chamber is generally placed in an aluminum alloy box and heated by attaching a heating sheet outside the air chamber. This design effectively isolates the air chamber from the outside air, ensuring the accuracy of the measurement.

[0004] However, the heating plate is clamped outside the air chamber, the heat transfer efficiency is restricted to a certain extent, the temperature adjustment is not flexible enough, the response speed is slow, and the layout position of the heating plate will also affect the heating speed. Utility Model Content

[0005] (I) The problem to be solved by the utility model is that the existing infrared spectrometer gas chamber is heated by a heating plate, the temperature adjustment is not flexible enough, the heating speed is slow, and the working efficiency during the experiment or detection is affected.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the embodiment of the utility model provides a constant temperature system for an infrared spectrometer gas chamber, wherein the infrared spectrometer includes an optical module;

[0008] The constant temperature system of the infrared spectrometer air chamber includes: an insulation box, a PTC heating fan and a controller;

[0009] The thermal insulation box comprises a box body and a thermal insulation layer, the thermal insulation layer covers the outer wall of the box body, and the interior of the box body is provided with a thermal insulation cavity for accommodating the optical module;

[0010] The PTC heating fan is arranged outside the box and is used to adjust the temperature in the heat preservation chamber;

[0011] The controller is electrically connected to the PTC heating fan and is used to control the operating state of the PTC heating fan.

[0012] Further, the optical module includes an air chamber and a temperature sensor;

[0013] The temperature sensor is embedded in the gas chamber and is used to monitor the gas temperature in the gas chamber;

[0014] The temperature sensor is electrically connected to the controller, and the temperature sensor can feed back temperature information of the gas in the gas chamber to the controller;

[0015] The controller controls the temperature and wind speed of the PTC heating fan according to the temperature information of the gas in the air chamber monitored by the temperature sensor.

[0016] Furthermore, the air chamber of the optical module has a first air inlet and a first air outlet;

[0017] The box body is provided with a second air inlet for matching with the first air inlet, and a second air outlet for matching with the first air outlet.

[0018] Furthermore, the box includes a main body and a cover plate;

[0019] The main body is in a groove-shaped structure, the cover plate is detachably connected to the open end of the main body, and the outer surfaces of the cover plate and the main body are both covered with the insulation layer;

[0020] When the cover plate is connected to the main body, a heat preservation cavity for accommodating the optical module is formed between the main body and the cover plate.

[0021] Furthermore, the PTC heating fan and the controller are both arranged on the outer surface of the cover plate.

[0022] Furthermore, the cover plate and the main body are sealed.

[0023] Furthermore, a sealing ring is provided at the edge of the open end of the main body.

[0024] Furthermore, a connecting plate is provided on the outer wall of the box, and the connecting plate is used to be connected to the body of the infrared spectrometer, and a heat insulation pad is provided on the side of the connecting plate connected to the body of the infrared spectrometer.

[0025] Furthermore, the box body is provided with a wiring board for matching the circuit system of the optical module and the circuit system of the main body of the infrared spectrometer.

[0026] Furthermore, the thermal insulation layer is thermal insulation cotton.

[0027] Beneficial effects of the utility model:

[0028] The utility model provides a constant temperature system for an infrared spectrometer air chamber, the infrared spectrometer includes an optical module; the constant temperature system for the infrared spectrometer air chamber includes: an insulation box, a PTC heating fan and a controller; the insulation box includes a box body and an insulation layer, the insulation layer covers the outer wall of the box body, and the interior of the box body is provided with an insulation cavity for accommodating the optical module; the PTC heating fan is arranged outside the box body, and is used to adjust the temperature in the insulation cavity; the controller is electrically connected to the PTC heating fan, and is used to control the operating state of the PTC heating fan.

[0029] By setting up an insulation box, the temperature in the air chamber can be kept constant. The insulation layer is set on the outer wall of the box body, which can prevent the insulation layer from occupying the space inside the box body. The hot air generated by the PTC heating fan can fill the insulation chamber, making the air chamber heated more evenly and improving the heat transfer efficiency. The PTC heating fan has strong adjustability. With the help of the controller, the temperature control in the insulation chamber is more flexible, and the temperature in the insulation chamber can be quickly adjusted. At the same time, it can also be adjusted in real time as needed to ensure that the air chamber can quickly reach and maintain the required temperature under different working conditions. In addition, the temperature in the insulation chamber is adjusted by the PTC heating fan and the controller, which has a simple structure, reduces the design cost and manufacturing cost, and is economically beneficial; at the same time, it also reduces the complexity of maintenance, reduces the number of potential fault points, and makes maintenance and management more intuitive and simple. Compared with the prior art, the air chamber is heated evenly, the heat transfer efficiency is high, and the temperature adjustment is flexible and the response is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 An exploded view of a constant temperature system for an infrared spectrometer gas chamber provided in an embodiment of the utility model.

[0032] Icons: 11-PTC heating fan; 12-controller; 131-main body; 132-cover plate; 14-insulation layer; 151-second air inlet; 152-second air outlet; 16-sealing ring; 17-connecting plate; 18-insulation pad; 19-connection board;

[0033] 2-optical module; 21-air chamber; 22-temperature sensor; 231-first air inlet; 232-first air outlet; 24-carbon 13 detector board; 25-carbon 12 detector board; 26-pressure sensor; 27-light source board. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] like Figure 1 As shown, the embodiment of the utility model provides a constant temperature system for the air chamber of an infrared spectrometer. The infrared spectrometer includes an optical module 2 and a body. The body of the infrared spectrometer includes a computer and other equipment. The optical module 2 includes an air chamber 21, a first air inlet 231, a first air outlet 232, a carbon 13 detector board 24, a carbon 12 detector board 25, a pressure sensor 26 and a light source board 27. Among them, the air chamber 21 is a detection site for gaseous material detection, the pressure sensor 26 is used to monitor the pressure in the air chamber 21, the light source board 27 is a light source for emitting infrared light, and the carbon 13 detector board 24 and the carbon 12 detector board 25 are used to perform detection.

[0036] In this embodiment, the air chamber 21 is provided with a first air inlet joint and a first air outlet joint that are in communication with the interior of the air chamber 21. The first air inlet joint forms the above-mentioned first air inlet port 231, and the first air outlet joint forms the above-mentioned first air outlet port 232. The first air inlet joint and the first air outlet joint can be pagoda joints, which have the characteristics of convenient disassembly and assembly. Alternatively, the first air inlet joint and the first air outlet joint can also be cylindrical joints, etc.

[0037] Furthermore, in this embodiment, the constant temperature system is used to provide a constant temperature environment for the optical module 2, specifically the air chamber 21 of the optical module 2, and the ambient temperature can be adjusted in real time, and has the characteristics of fast response speed when adjusting the ambient temperature.

[0038] Specifically, Figure 1 As shown, the constant temperature system of the infrared spectrometer air chamber includes: an insulation box, a PTC heating fan 11 and a controller 12; the insulation box includes a box body and an insulation layer 14, the insulation layer 14 covers the outer wall of the box body, and the interior of the box body is provided with an insulation cavity for accommodating the optical module 2; the PTC heating fan 11 is arranged outside the box body, and is used to adjust the temperature in the insulation cavity; the controller 12 is electrically connected to the PTC heating fan 11, and is used to control the operating state of the PTC heating fan 11.

[0039] In this embodiment, the constant temperature system of the air chamber of the infrared spectrometer is composed of several parts such as an insulation box, a PTC (Positive Temperature Coefficient) heating fan and a controller 12. Among them, the insulation box is composed of a box body and an insulation layer 14. The insulation layer 14 covers the outer wall of the box body and is used to keep the interior of the box body warm. At the same time, it does not occupy the internal space of the box body. The box body is hollow and formed with an insulation cavity, which is used to accommodate the above-mentioned optical module 2, that is, the air chamber 21 is located in the insulation cavity. The PTC heating fan 11 is arranged outside the box body and is used to adjust the temperature in the insulation cavity, thereby adjusting the temperature in the air chamber 21. In addition to the ordinary fan part, the PTC heating fan 11 also has PTC ceramics. PTC ceramics can generate heat after power is turned on, thereby heating the airflow generated by the fan part. The airflow generated by the fan part can enter the insulation cavity after being heated, thereby adjusting the temperature in the insulation cavity. PTC ceramics have the characteristics of constant heating and fast heating, which can reduce the fluctuation of airflow temperature. The controller 12 is electrically connected to the PTC heating fan 11 and is used to adjust the operating state of the PTC heating fan 11, thereby controlling the temperature in the heat preservation chamber.

[0040] Specifically, in this embodiment, the controller 12 is used to control the heat generated by the PTC ceramic and the rotation speed of the fan part, so as to adjust the temperature in the heat preservation chamber.

[0041] Optionally, in this embodiment, the controller 12 can be a PCB (Process Control Block) board or a CPU (Central Processing Unit) board, both of which can achieve the purpose of controlling the operating state of the PTC heating fan 11.

[0042] The constant temperature air chamber 21 of the infrared spectrometer provided in this embodiment can keep the temperature in the air chamber 21 constant by setting an insulation box. The insulation layer 14 is arranged on the outer wall of the box body, which can prevent the insulation layer 14 from occupying the space inside the box body. The hot air generated by the PTC heating fan 11 can fill the insulation chamber, so that the air chamber 21 is heated more evenly and the heat transfer efficiency is improved. The PTC heating fan 11 has strong adjustability, and cooperates with the controller 12 to make the temperature control in the insulation chamber more flexible, and can quickly adjust the temperature in the insulation chamber. At the same time, it can also be adjusted in real time as needed to ensure that the air chamber 21 can quickly reach and maintain the required temperature under different working conditions. In addition, the temperature in the insulation chamber is adjusted by the PTC heating fan 11 and the controller 12, which has a simple structure, reduces the design cost and manufacturing cost, and is economically beneficial; at the same time, it also reduces the complexity of maintenance, reduces the number of potential fault points, and makes maintenance and management more intuitive and simple. Compared with the prior art, the air chamber 21 is heated evenly, has a high heat transfer efficiency, and is flexible in temperature adjustment and responds quickly.

[0043] Optionally, in this embodiment, an opening may be provided on the box body, and the PTC heating fan 11 may be disposed at the opening. The temperature in the insulation chamber may be adjusted by the PTC fan blowing hot air into the box body. Furthermore, by opening the hole in the box body, the pressure in the insulation chamber will not be too high due to the long-term operation of the PTC heating fan 11.

[0044] Alternatively, in this embodiment, the hot air generated by the PTC heating fan 11 can be introduced into the heat preservation chamber through a pipeline, which is explained in detail below.

[0045] In this embodiment, in order to balance the pressure in the heat preservation chamber, a balancing hole for balancing the internal and external pressures may be opened on the box body.

[0046] like Figure 1 As shown, an embodiment of the utility model provides a constant temperature system for an infrared spectrometer air chamber, wherein the optical module 2 also includes a temperature sensor 22; the temperature sensor 22 is embedded in the air chamber 21 and is used to monitor the gas temperature in the air chamber 21; the temperature sensor 22 is electrically connected to the controller 12, and the temperature sensor 22 can feed back the temperature information of the gas in the air chamber 21 to the controller 12; the controller 12 controls the temperature and wind speed of the PTC heating fan 11 according to the temperature information of the gas in the air chamber 21 monitored by the temperature sensor 22.

[0047] In this embodiment, in order to be able to more intuitively control the temperature of the air chamber 21, the optical module 2 also includes a temperature sensor 22 for monitoring the temperature in the air chamber 21. Specifically, the temperature sensor 22 is embedded on the outer wall of the air chamber 21 and is used to monitor the temperature of the gas in the air chamber 21. At the same time, the temperature sensor 22 is also electrically connected to the controller 12, and the temperature information in the air chamber 21 monitored by the temperature sensor 22 can be fed back to the controller 12, and the controller 12 controls the wind speed and temperature of the PTC heating fan 11 according to the temperature information in the air chamber 21 monitored by the temperature sensor 22.

[0048] For example, when the temperature sensor 22 detects that the temperature in the air chamber 21 is lower than the preset temperature, the controller 12 controls the PTC ceramic to increase the heat generation and speed up the fan part. When the temperature sensor 22 detects that the temperature in the air chamber 21 is higher than the preset temperature, the controller 12 controls the PTC ceramic to reduce the heat generation and speed down the fan part.

[0049] like Figure 1 As shown, an embodiment of the utility model provides a constant temperature system for an infrared spectrometer air chamber, wherein the air chamber 21 of the optical module 2 has a first air inlet 231 and a first air outlet 232; the box body is provided with a second air inlet 151 for matching with the first air inlet 231, and a second air outlet 152 for matching with the first air outlet 232.

[0050] In this embodiment, the air chamber 21 has a first air inlet 231 and a first air outlet 232 that communicate with the inside and outside of the air chamber 21. The gaseous substance for detection can be rushed into the air chamber 21 through the first air inlet 231, and the gaseous substance in the air chamber 21 can be discharged through the first air outlet 232. In order to improve the adaptability of the box, the box is provided with a second air inlet 151 for matching with the first air inlet 231, and a second air outlet 152 for matching with the first air outlet 232. When in use, the first air inlet 231 and the second air inlet 151 are connected through a pipeline, and the first air outlet 232 and the second air outlet 152 are connected through a pipeline.

[0051] Optionally, in this embodiment, a second air inlet connector and a second air outlet connector are provided on the box body, a second air inlet port 151 is formed at the second air inlet connector, and a second air outlet port 152 is formed at the second air outlet connector. By providing the second air inlet connector and the second air outlet connector, the constant temperature system is conveniently connected to the outside world.

[0052] Optionally, in this embodiment, the structures of the second air inlet connector and the second air outlet connector may refer to the first air inlet connector and the first air outlet connector, and the specific structures are not repeated here.

[0053] like Figure 1As shown, an embodiment of the utility model provides a constant temperature system for an infrared spectrometer air chamber, wherein the box body includes a main body 131 and a cover plate 132; the main body 131 is a groove-shaped structure, the cover plate 132 is detachably connected to the open end of the main body 131, and the outer surfaces of the cover plate 132 and the main body 131 are covered with the insulation layer 14; when the cover plate 132 is connected to the main body 131, an insulation cavity for accommodating the optical module 2 is formed between the main body 131 and the cover plate 132.

[0054] In this embodiment, the box body is divided into two parts: a main body 131 and a cover plate 132. The main body 131 is a groove-shaped structure. The cover plate 132 is detachably connected to the main body 131. The cover plate 132 is used to open or close the open end of the main body 131. When the cover plate 132 is connected to the main body 131, the above-mentioned heat preservation cavity is formed between the cover plate 132 and the main body 131. The cover plate 132 cooperates with the main body 131 to facilitate inspection and maintenance of the internal structure of the box body.

[0055] Furthermore, in this embodiment, the above-mentioned insulation layer 14 covers the outer surface of the main body 131 and the cover plate 132, that is, the side of the main body 131 and the cover plate 132 facing away from the insulation cavity. The insulation layer 14 can be fixed to the main body 131 and the cover plate 132 by bonding, or by providing a connecting structure such as a cable tie, a screw, etc.

[0056] like Figure 1 As shown, an embodiment of the utility model provides a constant temperature system for an air chamber of an infrared spectrometer, wherein the PTC heating fan 11 and the controller 12 are both arranged on the outer surface of the cover plate 132 .

[0057] In this embodiment, preferably, the PTC heating fan 11 and the controller 12 are both arranged on the cover plate 132 and are located on the outer surface of the cover plate 132, so as to facilitate the operator to adjust the PTC heating fan 11 through the controller 12, and facilitate the connection between the PTC heating fan 11 and the controller 12, and facilitate the wiring layout.

[0058] In this embodiment, a heating hole connecting the heat preservation chamber with the outside is provided on the cover plate 132, and the PTC heating fan 11 is arranged at the heating hole by means of structures such as screws or rivets, so that the hot air generated by the PTC heating fan 11 can enter the heat preservation chamber. The controller 12 can be fixed to the cover plate 132 by means of structures such as screws or rivets, and the above-mentioned heat preservation layer 14 is provided between the controller 12 and the cover plate 132 to prevent the controller 12 from being overheated and affecting its use.

[0059] like Figure 1As shown, an embodiment of the utility model provides a constant temperature system for an infrared spectrometer air chamber, wherein the cover plate 132 and the main body 131 are sealed.

[0060] In this embodiment, preferably, a seal is provided between the cover plate 132 and the main body 131 to improve the heat preservation performance of the heat preservation chamber.

[0061] like Figure 1 As shown, an embodiment of the utility model provides a constant temperature system for an infrared spectrometer air chamber, and a sealing ring 16 is provided on the edge of the open end of the main body 131.

[0062] Specifically, in this embodiment, in order to achieve a sealing setting between the cover plate 132 and the main body 131, a circle of sealing ring 16 is arranged on the outer edge of the open end of the main body 131. After the cover plate 132 is connected to the main body 131, the cover plate 132 and the main body 131 squeeze the sealing ring 16 to achieve a sealing setting between the cover plate 132 and the main body 131.

[0063] Optionally, in this embodiment, the sealing ring 16 may be a silicone ring, a rubber ring, or the like.

[0064] It is understandable that, in this embodiment, sealant may be applied at the connection between the cover plate 132 and the main body 131 , which can also achieve the purpose of sealing between the cover plate 132 and the main body 131 in the present invention.

[0065] like Figure 1 As shown, an embodiment of the utility model provides a constant temperature system for an infrared spectrometer air chamber, wherein a connecting plate 17 is further provided on the outer wall of the box body, wherein the connecting plate 17 is used to be connected to the body of the infrared spectrometer, and a heat insulating pad 18 is provided on the side of the connecting plate 17 connected to the body of the infrared spectrometer.

[0066] In this embodiment, a connecting plate 17 is provided on the outer wall of the box body, and the connecting plate 17 is used to be connected to the body of the infrared mass spectrometer. Optionally, screw holes are opened on the connecting plate 17, and the box body is connected to the body of the infrared mass spectrometer by bolts or screws cooperating with the screw holes on the connecting plate 17.

[0067] Furthermore, preferably, a heat insulating pad 18 is provided on one side of the connecting plate 17 connected to the infrared mass spectrometer body to insulate the box body from the infrared mass spectrometer body, thereby effectively providing a good heat preservation environment for the optical module 2 in the heat preservation cavity.

[0068] Specifically, in this embodiment, the connecting plate 17 is disposed on the outer wall of the main body 131 , thereby improving the stability of the box.

[0069] like Figure 1As shown, an embodiment of the utility model provides a constant temperature system for an infrared spectrometer gas chamber, wherein the box body is provided with a wiring board 19 for matching the circuit system of the optical module 2 and the circuit system of the infrared spectrometer body.

[0070] In this embodiment, a wiring board 19 is provided on the box body, and the circuit system of the infrared mass spectrometer body is electrically connected to the circuit system of the optical module 2 through the wiring board 19. By providing the wiring board 19, the sealing of the heat preservation chamber can be improved, thereby providing a good heat preservation environment for the optical module 2 in the heat preservation chamber.

[0071] Preferably, in this embodiment, the wiring board 19 is also disposed on the main body 131, and the wiring board 19 and the connecting plate 17 are located on the same side wall of the main body 131 to facilitate wiring.

[0072] The embodiment of the utility model provides a constant temperature system for an infrared spectrometer air chamber. Preferably, the above-mentioned thermal insulation layer 14 is thermal insulation cotton, which has a simple structure, low cost, and excellent thermal insulation effect.

[0073] It is understandable that, in this embodiment, the thermal insulation layer 14 may also be made of foam board, extruded board, etc., which can also provide a good thermal insulation environment for the optical module 2 in the thermal insulation cavity.

[0074] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0075] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A constant temperature system for an infrared spectrometer gas chamber, the infrared spectrometer comprising an optical module (2); It is characterized in that The constant temperature system of the infrared spectrometer air chamber comprises: an insulation box, a PTC heating fan (11) and a controller (12); The thermal insulation box comprises a box body and a thermal insulation layer (14), the thermal insulation layer (14) covers the outer wall of the box body, and a thermal insulation cavity for accommodating the optical module (2) is provided inside the box body; The PTC heating fan (11) is arranged outside the box and is used to adjust the temperature in the heat preservation chamber; The controller (12) is electrically connected to the PTC heating fan (11) and is used to control the operating state of the PTC heating fan (11).

2. The constant temperature system of the infrared spectrometer gas chamber according to claim 1, characterized in that: The optical module (2) comprises an air chamber (21) and a temperature sensor (22); The temperature sensor (22) is embedded in the gas chamber (21) and is used to monitor the gas temperature in the gas chamber (21); The temperature sensor (22) is electrically connected to the controller (12), and the temperature sensor (22) is capable of feeding back temperature information of the gas in the gas chamber (21) to the controller (12); The controller (12) controls the temperature and wind speed of the PTC heating fan (11) according to the temperature information of the gas in the air chamber (21) monitored by the temperature sensor (22).

3. The constant temperature system of the infrared spectrometer gas chamber according to claim 1, characterized in that: The air chamber (21) of the optical module (2) has a first air inlet (231) and a first air outlet (232); The box body is provided with a second air inlet (151) for matching with the first air inlet (231), and a second air outlet (152) for matching with the first air outlet (232).

4. The constant temperature system of the infrared spectrometer gas chamber according to claim 1, characterized in that: The box body comprises a main body (131) and a cover plate (132); The main body (131) is in a groove-shaped structure, the cover plate (132) is detachably connected to the open end of the main body (131), and the outer surfaces of the cover plate (132) and the main body (131) are both covered with the thermal insulation layer (14); When the cover plate (132) and the main body (131) are connected, a heat preservation cavity for accommodating the optical module (2) is formed between the main body (131) and the cover plate (132).

5. The constant temperature system of the infrared spectrometer gas chamber according to claim 4, characterized in that: The PTC heating fan (11) and the controller (12) are both arranged on the outer surface of the cover plate (132).

6. The constant temperature system of the infrared spectrometer gas chamber according to claim 4, characterized in that: The cover plate (132) and the main body (131) are sealed.

7. The constant temperature system of the infrared spectrometer gas chamber according to claim 6, characterized in that: A sealing ring (16) is provided at the edge of the open end of the main body (131).

8. The constant temperature system of the infrared spectrometer gas chamber according to claim 1, characterized in that: A connecting plate (17) is also provided on the outer wall of the box body. The connecting plate (17) is used to be connected to the body of the infrared spectrometer, and a heat insulation pad (18) is provided on the side of the connecting plate (17) connected to the body of the infrared spectrometer.

9. The constant temperature system of the infrared spectrometer gas chamber according to claim 1, characterized in that: The box body is provided with a wiring board (19) for matching the circuit system of the optical module (2) and the circuit system of the main body of the infrared spectrometer.

10. The constant temperature system of the infrared spectrometer gas chamber according to claim 1, characterized in that: The thermal insulation layer (14) is thermal insulation cotton.

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