Temperature control box

Abstract

The utility model relates to a temperature control box, which comprises an inner box body and at least two inner heat sources, and is characterized in that the inner box body is configured to be provided with an optical cavity ring-down device; the at least two inner heat sources are arranged on two opposite inner walls of the inner box body; the inner heat source comprises a first fan, a heating mechanism and a flow guide plate, the first fan is configured to enable air to flow towards the two sides of the heating mechanism along the inner wall of the inner box body, the heating mechanism is configured to heat airflow, the flow guide plate is arranged on the inner wall of the inner box body, and the ends of the two sides of the flow guide plate incline inwards by a preset angle. According to the temperature control box disclosed by the invention, the flow direction of the hot air flow is adjusted by arranging the flow guide plate, the hot air flow acts with the hot air flow generated by the oppositely arranged internal heat source to form a plurality of stable annular air flows, and an optical cavity ring-down device can be arranged in each stable annular air flow, so that the effective working space of the temperature control box is increased; a plurality of optical cavity ring-down devices can be arranged in one temperature control box, and the experiment efficiency of optical cavity ring-down is improved.

Description

Technical Field

[0001] This disclosure relates to the field of temperature control technology, and in particular to a temperature control box. Background Technology

[0002] Cavity ring-down spectroscopy is a highly sensitive technique for measuring the optical absorption of gaseous, liquid, or solid samples. It is based on the phenomenon that light gradually attenuates after multiple reflections within a highly reflective optical cavity. By precisely measuring the decay of light intensity over time, it determines the degree of absorption of a specific wavelength of light by the sample. Because the effective path length is greatly increased due to the multiple reflections within the cavity, cavity ring-down spectroscopy can detect extremely low concentrations of substances and is widely used to measure the concentration of gas components.

[0003] Temperature changes alter the length of an optical cavity, leading to variations in the path length of light waves within it. Temperature variations also cause deformation of the mirrors, affecting the reflection and focusing of light waves. The light field distribution within the optical cavity is influenced by the cavity length and the reflectivity of the mirrors; therefore, temperature changes significantly impact the laser's mode and beam quality.

[0004] Existing temperature control chambers have a small effective working area, typically only allowing for one gas detection system. Furthermore, they lack resistance to external environmental interference, causing temperature fluctuations due to ambient temperature variations, which in turn affect the optical cavity's ability to measure gas concentration. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a temperature control box.

[0006] According to a first aspect of this disclosure, the temperature control chamber includes:

[0007] An inner enclosure, the inner enclosure being configured to house an optical cavity ring-down device;

[0008] At least two internal heat sources are disposed on two opposing inner walls of the inner casing.

[0009] The internal heat source includes a first fan, a heating mechanism, and a guide plate. The first fan is configured to cause air to flow along the inner wall of the inner housing to both sides of the heating mechanism. The heating mechanism is configured to heat the airflow. The guide plate is disposed on the inner wall of the inner housing, and the two ends of the guide plate are inclined inward at a preset angle.

[0010] In one embodiment of this disclosure, a first mounting through hole is provided on the inner wall of the inner casing, and the guide plate includes:

[0011] A fixing part is embedded in the first mounting through hole and fixedly connected to the inner box. The first fan and heating mechanism are detachably mounted on the fixing part.

[0012] Two horizontal flow guide portions, each of which extends from a side of the fixing portion along a hole wall of the first mounting through hole to an inner wall of the inner box body, and then extends along the inner wall of the inner box body;

[0013] An inclined flow guide portion, which extends from an end of the horizontal flow guide portion away from the fixing portion and is inclined inwardly by a preset angle.

[0014] In an embodiment of the present disclosure, the heating mechanism includes a heating element arranged on the inner box body, a first heat sink stacked on the heating element, and a first fan stacked on the first heat sink and configured to guide airflow in the inner box body through the first heat sink to the heating element for heating.

[0015] In an embodiment of the present disclosure, the temperature control box further includes:

[0016] An outer box body, which covers the inner box body and forms a heat insulation gap between the inner box body and the outer box body;

[0017] An outer heat source, which is arranged on the outer box body and is configured to exchange heat with airflow in the heat insulation gap and airflow in an external environment of the outer box body, so that the temperature in the heat insulation gap is within a preset temperature range.

[0018] In an embodiment of the present disclosure, the inner box body and the outer box body are both rectangular box bodies, four inner heat sources are arranged in the inner box body, the four inner heat sources are arranged on two long side box bodies of the inner box body, two outer heat sources are arranged in the outer box body, the two outer heat sources are arranged on two long side box bodies of the outer box body, and one outer heat source on the same side is located between the corresponding two inner heat sources.

[0019] In an embodiment of the present disclosure, the outer box body has a second mounting through hole, and the outer heat source includes a second fan, a second heat sink, a thermoelectric cooler, a third heat sink, and a third fan arranged in the outer box body in sequence from inside to outside.

[0020] The thermoelectric cooler is arranged in the second mounting through hole and has oppositely arranged first and second heat-conducting surfaces, the first heat-conducting surface faces the heat insulation gap, and the second heat-conducting surface faces the external environment of the outer box body.

[0021] In an embodiment of the present disclosure, the power of the third fan is greater than the power of the second fan.

[0022] In one embodiment of the present disclosure, the external heat source further comprises a heat insulation cotton, the heat insulation cotton is provided with a third mounting through hole, the thermoelectric cooler is arranged in the third mounting through hole on the heat insulation cotton, and the heat insulation cotton is tightly arranged between the second heat sink and the inner wall of the external box body, or the heat insulation cotton is tightly arranged between the third heat sink and the outer wall of the external box body.

[0023] In one embodiment of the present disclosure, the temperature control box further comprises:

[0024] a first temperature sensor arranged in the inner box body;

[0025] a second temperature sensor arranged in the heat insulation gap;

[0026] a controller in communication connection with the first temperature sensor and the second temperature sensor, and configured to control the external heat source and the internal heat source based on the first temperature sensor and the second temperature sensor, so that the temperature difference between the inner box body and the heat insulation gap is within a preset temperature difference range.

[0027] In one embodiment of the present disclosure, corner braces are arranged at the connection between the side plates of the inner box body, the corner braces are provided with press-in nuts, the top plate of the inner box body is downwardly bent at the four corners of the long side to form a connecting surface, the connecting surface is provided with a waist-shaped hole, and the corner braces and the top plate of the inner box body are fixedly connected through the screw passing through the press-in nuts and the waist-shaped hole.

[0028] One beneficial effect of the temperature control box of the present disclosure is that the temperature control box of the present disclosure is provided with a flow guide plate, a heating mechanism and a first fan, the first fan blows air in the center of the inner box body to the heating mechanism, the air flow is heated under the action of the heating mechanism, and then the hot air flow flows to both sides of the heating mechanism and flows from one side wall to the other side wall under the shielding action of the end portions of the flow guide plate. The internal heat source is also arranged at the corresponding position of the other side wall, the hot air flows generated on both sides collide with each other, and multiple stable annular air flows are formed. In each stable annular air flow, a light cavity ring-down device can be arranged, the effective working space of the temperature control box is increased, multiple light cavity ring-down devices can be arranged in one temperature control box, and the experimental efficiency of the light cavity ring-down is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] Figure 1 is a structural schematic view of a temperature control box without an inner top plate and an outer top plate provided in one embodiment of the present disclosure;

[0031] Figure 2 is an exploded structural schematic view of an inner box provided in an embodiment of the present disclosure;

[0032] Figure 3 is an exploded structural schematic view of an outer box provided in an embodiment of the present disclosure;

[0033] Figure 4 is an exploded structural schematic view of an inner heat source provided in an embodiment of the present disclosure;

[0034] Figure 5 is an exploded structural schematic view of an outer heat source provided in an embodiment of the present disclosure;

[0035] Figure 6 is an air flow direction diagram of the inner box and the outer box provided in an embodiment of the present disclosure.

[0036] Figures 1-6 A one-to-one correspondence between the names of components and reference numerals in the following table is as follows:

[0037] 1 - inner box; 11 - inner heat source; 111 - first fan; 114 - flow guide plate; 1141 - fixed part; 1142 - horizontal flow guide part; 1143 - inclined flow guide part;

[0038] Heating mechanism: 112 - heating element; 113 - first heat sink;

[0039] 12 - gusset plate; 13 - first mounting through hole;

[0040] 2 - outer box; 21 - outer heat source; 211 - second fan; 212 - second heat sink; 213 - thermoelectric cooler; 214 - third heat sink; 215 - third fan; 216 - thermal insulation cotton; 2161 - third mounting through hole; 22 - second mounting through hole. DETAILED DESCRIPTION

[0041] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present disclosure unless otherwise specifically stated.

[0042] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the disclosure and its applications or uses.

[0043] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the description if appropriate.

[0044] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Thus, other examples of the example embodiments can have different values.

[0045] It should be noted that like reference numerals and letters refer to like elements throughout the several views of the drawings, and that, unless otherwise indicated, like elements in two or more figures are not necessarily drawn to scale.

[0046] In the present document, 'upper', 'lower', 'front', 'back', 'left', 'right', and the like are used to denote relative positional relationship between relevant parts, and do not limit the absolute positions of the relevant parts.

[0047] In the present document, 'first','second', and the like are used only to distinguish between relevant parts from each other, and do not indicate importance and order, and the premise of existence of each other.

[0048] In the present document, 'equal','same', and the like are not strictly limited in the mathematical and / or geometric sense, but also include errors allowed by the person skilled in the art in manufacturing or use, and the like.

[0049] The effective working area space of the existing temperature control box is small, and the anti-external environment interference ability is poor. Therefore, the present disclosure provides a temperature control box. In order to facilitate understanding, the specific structure of the temperature control box of the present disclosure and its working principle will be described in detail below with reference to Figures 1-6 .

[0050] Referring to Figure 4 , Figure 6 The temperature control box comprises an inner box body 1 and at least two inner heat sources 11. The inner box body 1 is configured to be provided with a light cavity ring-down device. The at least two inner heat sources 11 are arranged on two opposite inner walls of the inner box body 1. The inner heat source 11 comprises a first fan 111, a heating mechanism, and a flow guide plate 114. The first fan 111 is configured to make air flow along the inner wall of the inner box body 1 to both sides of the heating mechanism. The heating mechanism is configured to heat the air flow. The flow guide plate 114 is arranged on the inner wall of the inner box body 1, and the two side ends of the flow guide plate 114 are inclined inward by a preset angle.

[0051] Specifically, the inner box body 1 is a rectangular box body, and two long edges of the rectangular box body are provided with inner heat sources 11. The inner heat sources 11 can be two, four or the like, and every two inner heat sources 11 are oppositely arranged. A temperature sensor is further arranged near the inner heat sources 11, for detecting the temperature of the inner box body 1. The inner heat sources 11 are connected with the inner wall through a flow guide plate 114, and are connected by using a press-in screw. The press-in screw can be quickly installed, and only a simple tool such as a press-in gun is needed to complete the installation, thereby greatly reducing the assembly time and cost. Welding or pre-processing of threaded holes is not needed, thereby avoiding the problems of material deformation and stress concentration caused by heat treatment, and a very stable connection can be provided.

[0052] The two side ends of the flow guide plate 114 are inwardly inclined by a preset angle, and the angle value is 45°. Of course, 45° is only a reference in this embodiment, and in actual use, the inclination angle of the flow guide plate 114 can be changed according to the stability effect of the airflow. The middle position of the flow guide plate 114 is provided with a heating mechanism and a first fan 111, and the first fan 111 blows the air at the center of the inner box body 1 to the heating mechanism. Under the action of the heating mechanism, the airflow is heated, and then the hot airflow contacts the flow guide plate 114 and flows to both sides of the heating mechanism. Under the shielding action of the two side ends of the flow guide plate 114, the hot airflow flows from one side wall to the other side wall. The other side wall is also provided with an inner heat source 11 at the corresponding position, and the hot airflows generated on both sides collide to form multiple stable annular airflows. The annular airflows are the effective working space, which is used to arrange the optical cavity ring-down devices.

[0053] In detail, the inner heat source 11 on one side generates two inward airflows at the two side ends of the flow guide plate 114, and the inner heat source 11 arranged on the opposite side also generates two inward airflows. The four inward airflows collide, and since the air at the center of the inner box body 1 is sucked by the fan and blown to the flow guide plate 114, the air pressure at the center of the inner box body 1 is low, and the airflows generated at the two side ends of the flow guide plate 114 flow to the center of the inner box body 1 and are then sucked by the fan and blown to the flow guide plate 114. Finally, four stable annular airflows are generated, and the flow directions of any two adjacent annular airflows are opposite, that is, two clockwise annular airflows and two counterclockwise annular airflows. The four stable airflows are the effective working space in the temperature control box, and four optical intensity ring-down devices can be arranged. In actual application, the number of inner heat sources 11 can be increased according to the number of required effective working spaces.

[0054] The temperature control box of the present disclosure adjusts the flow direction of the hot airflow by arranging the flow guide plate 114, and the hot airflow generated by the oppositely arranged inner heat sources 11 acts to form multiple stable annular airflows. In each stable annular airflow, an optical cavity ring-down device can be arranged, the effective working space of the temperature control box is increased, multiple optical cavity ring-down devices can be arranged in one temperature control box, and the experimental efficiency of the optical cavity ring-down is improved.

[0055] Referring to Figure 4 In one embodiment, the inner wall of the inner box body 1 is provided with a first mounting through hole 13, and the flow guide plate 114 includes a fixed part 1141, two horizontal flow guide parts 1142, and an inclined flow guide part 1143. The fixed part 1141 is embedded in the first mounting through hole 13 and fixedly connected with the inner box body 1. The first fan 111 and the heating mechanism are detachably mounted on the fixed part 1141. The two horizontal flow guide parts 1142 extend from the two sides of the fixed part 1141 to the inner wall of the inner box body 1 along the hole wall of the first mounting through hole 13, and then continue to extend along the inner wall of the inner box body 1. The inclined flow guide part 1143 extends from the end of the horizontal flow guide part 1142 in a direction away from the fixed part 1141 and is inclined inward by a preset angle.

[0056] Specifically, the flow guide plate 114 includes the fixed part 1141, the horizontal flow guide part 1142, and the inclined flow guide part 1143 arranged in sequence from the middle to the two sides. The inclined flow guide part 1143 is inclined inward by a preset angle relative to the horizontal flow guide part 1142, so that the airflow flows from along the inclined flow guide part 1143 to the center of the inner box body 1. The inner wall of the inner box body 1 is provided with a first mounting through hole 13. The fixed part 1141 is completely arranged in the first mounting through hole 13. Part of the horizontal flow guide part 1142 is arranged in the first mounting through hole 13, and the other part is firmly connected with the inner wall of the inner box body 1 by screws. The main function is to further guide the airflow and provide support for subsequent components.

[0057] The flow guide plate 114 is made of lightweight but strong material, such as aluminum alloy or engineering plastic, which can withstand certain mechanical stress without significantly increasing the weight of the system. The design of the first mounting through hole 13 ensures the stability of the flow guide plate 114.

[0058] The fan is selected to be of high efficiency and energy saving type, with good silent performance, to provide a stable and quiet working environment and reduce the influence of vibration on the optical cavity. The first fan 111 and the heating mechanism are arranged close to the fixed part 1141, which can effectively increase the area of the stable region of the airflow. The flow guide plate 114, the heating mechanism, and the first fan 111 are detachably arranged in sequence on the inner wall of the inner box body 1. This modular design not only simplifies the installation process, but also greatly improves the flexibility and maintenance efficiency of the equipment, and can ensure long-term reliable operation.

[0059] Referring to Figure 4 In one embodiment, the heating mechanism includes a heating element 112 arranged on the inner box body 1 and a first heat sink 113 stacked on the heating element 112. The first fan 111 is stacked on the first heat sink 113 and is configured to guide the airflow in the inner box body 1 to the heating element 112 through the first heat sink 113 for heating.

[0060] Specifically, the heating element 112 is composed of a series of high-power electric heating elements embedded in a solid and high-temperature-resistant metal substrate. The electric heating elements inside the heating element 112 can take the form of resistance wires or ceramic heating sheets, which generate a large amount of heat when powered on and transfer it outward through radiation and conduction.

[0061] The first heat sink 113 typically adopts a finned structure composed of multiple thin metal fins arranged in parallel. This design greatly increases the surface area and improves heat exchange efficiency. The spacing between the fins is optimized to ensure sufficient contact area without causing excessive airflow obstruction. The first heat sink 113 efficiently transfers the heat generated by the heating element 112 to the airflow driven by the first fan 111, thereby achieving rapid air warming.

[0062] The first heat sink 113 is directly connected to the heating element 112 and tightly adheres to it through thermal grease, ensuring that heat is quickly conducted from the heating element 112 to the first heat sink 113.

[0063] Referring to Figure 3 In one embodiment, the temperature control box further includes an outer box body 2, an outer heat source 21, the outer box body 2 covers the inner box body 1, and a heat insulation gap is formed between the inner box body 1 and the outer box body 2; the outer heat source 21 is arranged on the outer box body 2 and is configured to exchange heat with the airflow in the heat insulation gap and the airflow outside the outer box body 2, so that the temperature in the heat insulation gap is within a preset temperature range.

[0064] Specifically, the heat insulation gap between the outer box body 2 and the inner box body 1 is filled with air, and changes in the environment outside the outer box body 2 need to first change the air in the heat insulation gap before being transmitted to the inner box body 1. Under normal circumstances, since the inner heat source 11 is embedded in the inner wall of the inner box body 1, part of the heat of the inner box body 1 is dissipated into the outer box body 2 through the flow guide plate 114, and some electronic components are arranged in the outer box body 2, which will also dissipate heat in the working state. Therefore, the air in the outer box body 2 usually needs to be cooled, and the temperature of the outer box body 2 is generally kept 5-10℃ lower than that of the inner box body 1. Keeping the temperature of the outer box body 2 stable is conducive to the temperature stability of the inner box body 1 and improves the anti-environmental interference capability of the inner box body 1.

[0065] In one embodiment, the outer box body 2 and the inner box body 1 are both rectangular boxes, four inner heat sources 11 are arranged in the inner box body 1, the four inner heat sources 11 are arranged on two long side boxes of the inner box body 1, two outer heat sources 21 are arranged in the outer box body 2, the two outer heat sources 21 are arranged on two long side boxes of the outer box body 2, and one outer heat source 21 on the same side is located between the corresponding two inner heat sources 11.

[0066] Specifically, since the fixed part 1141 of the inner heat source 11 is close to the heating element 112 and contacts the air in the heat insulation gap through the first mounting hole 13, the outer heat source 21 is arranged at the center position between the two inner heat sources 11, and the air in the heat insulation gap is cooled by the outer heat source 21, so that the air in the heat insulation gap reaches the preset temperature range, and in particular, the air near the inner heat source 11 is cooled, and the air temperature in the inner box body 1 reaches a stable state.

[0067] In one embodiment, the outer box body 2 has a second mounting hole 22, and the outer heat source 21 includes a second fan 211, a second heat sink 212, a thermoelectric cooler 213, a third heat sink 214, and a third fan 215 arranged in sequence from inside to outside; wherein the thermoelectric cooler 213 is arranged in the second mounting hole 22 and has oppositely arranged first and second heat-conducting surfaces, the first heat-conducting surface faces the heat insulation gap, and the second heat-conducting surface faces the external environment of the outer box body 2.

[0068] Specifically, the thermoelectric cooler 213 is a semiconductor refrigerator, which uses the temperature difference generated when an electric current passes through the junction of different types of semiconductor materials to achieve the effect of refrigeration or heating. It is usually composed of multiple PN junctions made of N-type and P-type semiconductor materials connected in series, both ends are packaged with ceramic materials to provide mechanical support and protect the internal components from the external environment, and are connected to a power source to ensure that the current can flow correctly through each PN junction.

[0069] Peltier effect: When a direct current passes through the junction of two different semiconductor materials, it will produce a heat absorption effect on one side and a heat release effect on the other side.

[0070] Based on the Peltier effect, in the cooling mode, heat is absorbed from the outer box body 2 and conducted to the outside through the semiconductor material, and finally dissipated to the environment. Changing the direction of the current can reverse the heat flow direction to achieve the heating mode, in which heat is absorbed from the outside and conducted to the outer box body 2 through the semiconductor material.

[0071] The thermoelectric cooler 213 is fixedly arranged in the second mounting hole 22 of the outer box body 2. In order to effectively dissipate heat, the first heat-conducting surface of the thermoelectric cooler 213 facing the heat insulation gap is provided with the second fan 211 and the second heat sink 212, and the second heat-conducting surface facing the external environment of the outer box body 2 is provided with the third fan 215 and the third heat sink 214. The second fan 211 causes air to flow to the second heat sink 212, which exchanges heat with the first heat-conducting surface of the thermoelectric cooler 213, and the third fan 215 causes air to flow to the third heat sink 214, which exchanges heat with the second heat-conducting surface of the thermoelectric cooler 213.

[0072] In one embodiment, the power of the third fan 215 is greater than the power of the second fan 211.

[0073] Specifically, due to the different requirements of the cooling end and the heating end, in the process of cooling using the thermoelectric cooler 213, the heating end needs to effectively dissipate the heat, and in order to cope with the greater heat dissipation requirement, the fan of the heating end is usually larger in size and has greater power, so as to be able to quickly and effectively discharge the heat out of the system, thereby ensuring the efficient work of the thermoelectric cooler 213. Since the internal heat source 11 is embedded in the inner wall of the inner box 1, part of the heat of the inner box 1 is dissipated into the outer box 2 through the flow guide plate 114, and some electronic components are arranged in the outer box 2, which will also dissipate heat in the working state. Therefore, the air in the outer box 2 usually needs to be cooled, that is, the inner box 2 is the cooling end, and the outer box 2 is the heating end. Therefore, the power of the third fan 215 is greater than the power of the second fan 211, so as to be able to quickly and effectively discharge the heat out of the system, thereby ensuring the efficient work of the thermoelectric cooler 213. In addition, increasing the size of the fan to increase the air flow can help to reduce the temperature rise of the heating end, thereby maintaining the temperature difference between the two sides of the thermoelectric cooler 213 and ensuring its cooling effect. Therefore, the size of the third fan 215 and the third heat sink 214 is greater than the size of the second fan 211 and the second heat sink 212.

[0074] In one embodiment, the external heat source 21 further comprises a heat insulation cotton 216, the heat insulation cotton 216 has a third mounting through hole 2161, the thermoelectric cooler 213 is arranged in the third mounting through hole 2161 on the heat insulation cotton 216, and the heat insulation cotton 216 is tightly pressed between the second heat sink 212 and the inner wall of the outer box 2 or the heat insulation cotton 216 is tightly pressed between the third heat sink 214 and the outer wall of the outer box 2.

[0075] Specifically, the shape of the third mounting through hole 2161 is matched with the shape of the thermoelectric cooler 213, the thermoelectric cooler 213 is fixed in the second mounting through hole 22 through the heat insulation cotton 216, and the outer contour size of the heat insulation cotton 216 is slightly larger than the size of the second mounting through hole 22, so that the heat insulation cotton 216 can be tightly pressed between the second heat sink 212 and the inner wall of the outer box 2 or the heat insulation cotton 216 is tightly pressed between the third heat sink 214 and the outer wall of the outer box 2. By such arrangement, the outer box 2 is separated from the external environment, and the temperature of the heat insulation gap is kept stable.

[0076] In one embodiment, the temperature-controlled box further comprises a first temperature sensor, a second temperature sensor, and a controller, wherein the first temperature sensor is arranged in the inner box body 1; the second temperature sensor is arranged in the heat insulation gap; the controller is in communication connection with the first temperature sensor and the second temperature sensor, and is configured to control the outer heat source 21 and the inner heat source 11 based on the first temperature sensor and the second temperature sensor, so that the temperature difference between the inner box body 1 and the heat insulation gap is within a preset temperature difference range.

[0077] Specifically, the first temperature sensor is arranged in the inner box body 1 to detect the temperature in the inner box body 1, the second temperature sensor is arranged in the heat insulation gap in the outer box body 2 to detect the temperature of the heat insulation gap, and the controller is arranged in the outer box body 2 and in communication connection with the first temperature sensor and the second temperature sensor to control the inner heat source 11 and the outer heat source 21.

[0078] When the temperature measurement value of the first temperature sensor or the second temperature sensor is lower than the preset temperature, the controller controls the corresponding inner heat source 11 to increase the temperature or controls the corresponding outer heat source 21 to increase the temperature; when the temperature measurement value of the second temperature sensor is higher than the preset temperature, the controller controls the corresponding outer heat source 21 to reduce the temperature

[0079] In one embodiment, the corner braces 12 are arranged at the connection between the two inner side plates of the inner box body 1, and the corner braces 12 are provided with press-in nuts, the top plate of the inner box body 1 is downwardly bent at the four corners of the long side to form a connecting surface, the connecting surface is provided with a waist-shaped hole, and the corner braces 12 and the top plate of the inner box body 1 are fixedly connected through the screws passing through the press-in nuts and the waist-shaped hole.

[0080] Specifically, the inner box body 1 comprises an inner top plate, an inner bottom plate, and inner side plates, the inner side plates located at the long side are threadedly connected with the four press-in studs arranged on the inner side plates located at the short side through the four through holes arranged at the two ends of the inner side plates, and the corner braces 12 are arranged at the connection between the two inner side plates, so as to form a stable inner box body 1 structure and prevent the thermal insulation material from being opened at the edges. The inner top plate is arranged above the inner side plates, the connecting surface formed by downwardly bending the inner top plate at the four corners of the long side is opposite to the surface of the corner braces 12 provided with the press-in nuts, the connecting surface is provided with a waist-shaped hole, and the screw is threadedly connected through the press-in nut arranged on the corner brace 12 and then lapped in the waist-shaped hole of the connecting surface, so as to fix the inner top plate and the inner side plates. When disassembling, the screw does not need to be pulled out, but only needs to be rotated to retreat from the waist-shaped hole, so that the inner top plate can be taken out, thereby improving the work efficiency.

[0081] Having described above several embodiments of the disclosure, any modifications and variations that fall within the scope of the described embodiments are also contemplated by the inventor(s). As such, the foregoing description is not intended to limit the scope of the disclosure, and it is recognized that modifications are contemplated which can provide one or more benefits and which are within the scope of the disclosure. The disclosure is defined by the appended claims.

Claims

1. An incubator, characterized in that, The temperature control box comprises: an inner box body (1) configured to set up a light cavity ring-down device; at least two inner heat sources (11) arranged on two opposite inner walls of the inner box body (1); the inner heat source (11) comprises a first fan (111), a heating mechanism and a flow guide plate (114), the first fan (111) is configured to make air flow along the inner wall of the inner box body (1) to both sides of the heating mechanism, the heating mechanism is configured to heat the airflow, and the flow guide plate (114) is arranged on the inner wall of the inner box body (1), and both side ends of the flow guide plate (114) are inclined inward by a preset angle.

2. The temperature-controlled chamber of claim 1, wherein, A first mounting through hole (13) is arranged on the inner wall of the inner box body (1), and the flow guide plate (114) comprises: a fixed part (1141) embedded in the first mounting through hole (13) and fixedly connected with the inner box body (1), and the first fan (111) and the heating mechanism are detachably mounted on the fixed part (1141); two horizontal flow guide parts (1142) respectively extended from both sides of the fixed part (1141) to the inner wall of the inner box body (1) along the hole wall of the first mounting through hole (13) and then continued to extend along the inner wall of the inner box body (1); and an inclined flow guide part (1143) extended from the end of the horizontal flow guide part (1142) away from the fixed part (1141) and inclined inward by a preset angle.

3. The temperature-controlled box of claim 2, wherein, The heating mechanism comprises a heating element (112) arranged on the inner box body (1) and a first heat sink (113) stacked on the heating element (112), and the first fan (111) is stacked on the first heat sink (113) and is configured to guide the airflow in the inner box body (1) to the heating element (112) through the first heat sink (113) for heating.

4. Incubator according to any one of claims 1 to 3, characterized in that The temperature control box further comprises: an outer box body (2) covering the inner box body (1), and a heat insulation gap formed between the inner box body (1) and the outer box body (2); an outer heat source (21) arranged on the outer box body (2) and configured to exchange heat with the airflow in the heat insulation gap and the airflow outside the outer box body (2) to make the temperature in the heat insulation gap within a preset temperature range.

5. The temperature-controlled box of claim 4, wherein, The outer box body (2) and the inner box body (1) are both rectangular boxes, four inner heat sources (11) are arranged in the inner box body (1), the four inner heat sources (11) are arranged on two long side boxes of the inner box body (1), two outer heat sources (21) are arranged in the outer box body (2), the two outer heat sources (21) are arranged on two long side boxes of the outer box body (2), and one outer heat source (21) on the same side is located between the corresponding two inner heat sources (11).

6. The temperature-controlled box of claim 4, wherein, The outer box body (2) is provided with a second mounting through hole (22), and the outer heat source (21) comprises, from inside to outside, a second fan (211), a second radiator (212), a thermoelectric cooler (213), a third radiator (214) and a third fan (215) which are sequentially stacked; The thermoelectric cooler (213) is arranged in the second mounting through hole (22) and has oppositely arranged first and second heat-conducting surfaces, the first heat-conducting surface faces the heat insulation gap, and the second heat-conducting surface faces the external environment of the outer box body (2).

7. The temperature-controlled box of claim 6, wherein, The power of the third fan (215) is greater than that of the second fan (211).

8. The temperature-controlled box of claim 6, wherein, The outer heat source (21) further comprises heat insulation cotton (216) which is provided with a third mounting through hole (2161), the thermoelectric cooler (213) is arranged in the third mounting through hole (2161) of the heat insulation cotton (216), and the heat insulation cotton (216) is tightly pressed between the second radiator (212) and the inner wall of the outer box body (2) or between the third radiator (214) and the outer wall of the outer box body (2).

9. The temperature-controlled box of claim 4, wherein, The temperature control box further comprises: A first temperature sensor arranged in the inner box body (1); A second temperature sensor arranged in the heat insulation gap; A controller in communication connection with the first and second temperature sensors and configured to control the outer heat source (21) and the inner heat source (11) based on the first and second temperature sensors so that the temperature difference between the inner box body (1) and the heat insulation gap is within a preset temperature difference range.

10. The temperature-controlled box of claim 9, wherein, Corner braces (12) are arranged at the connection portions between two side plates of the inner box body (1), the corner braces (12) are provided with press-in nuts, the top plate of the inner box body (1) is downwardly bent at four corners of the long side to form connecting surfaces, the connecting surfaces are provided with waist-shaped holes, and the corner braces (12) and the top plate of the inner box body (1) are fixedly connected through screws passing through the press-in nuts and the waist-shaped holes.

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