Constant temperature incubator and temperature control system thereof

Abstract

The application discloses a constant-temperature incubator and a temperature control system thereof, and relates to the field of incubators. The constant-temperature incubator comprises an incubator body and a temperature control box, a plurality of independent culture cavities are formed in the incubator body, air inlets and air outlets are formed on the two sides of the culture cavities respectively, the temperature control box is fixedly installed on the side surface of the incubator body, a main air duct, a plurality of branch air ducts and a plurality of return air ducts are installed in the temperature control box, and an air inlet cavity in communication with the main air duct and the outside is formed in the side wall of the temperature control box. The cooperation of the main air duct, the branch air duct and the return air duct in the temperature control box constructs a complete air circulation system, and temperature loss is reduced. Meanwhile, a single fan can be controlled to open and close different branch air ducts in cooperation with an air valve actuator, the number of culture cavities to be started is adjusted, all air duct components need not be started, and the adaptability of the equipment to different sample culture numbers is improved.

Description

Technical Field

[0001] This invention relates to the field of incubators, and particularly to a constant temperature incubator and its temperature control system. Background Technology

[0002] In fields such as biological culture and experimental testing, constant temperature incubators are one of the core pieces of equipment. They are mainly used to provide a stable constant temperature environment for cultured objects such as microorganisms and cells, ensuring the smooth progress of the culture process.

[0003] Currently, most existing constant temperature incubators adopt a single integrated temperature control structure, meaning that the entire incubator has only one unified temperature control system, and multiple culture zones share a single air duct and temperature regulation component. This structure has significant technical drawbacks: When multiple samples with different temperature requirements need to be cultured simultaneously, it is impossible to achieve independent constant temperature control in multiple culture areas. Only a uniform temperature setting can be used, which may cause some samples to be affected by unsuitable temperature, affecting the culture effect or even causing sample damage.

[0004] Furthermore, the existing incubators have low airflow circulation efficiency and insufficient integration of return airflow and fresh air, which further affects the accuracy and stability of temperature control. At the same time, when a single fan in the existing incubator is driven, it is impossible to control the opening and closing of different branch pipes separately. This means that all culture chambers can only be activated or deactivated simultaneously. Even if only some culture chambers are needed, all air ducts and temperature control components must be activated. This not only wastes energy but also makes it impossible to flexibly adjust the number of culture chambers in use according to the number of samples cultured. The adaptability is poor and it cannot meet the needs of high-precision and diversified biological culture. Summary of the Invention

[0005] The purpose of this invention is to provide a constant temperature incubator and its temperature control system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a constant temperature incubator, comprising: The incubation chamber has multiple independent incubation cavities inside, and air inlets and exhaust outlets are respectively provided on both sides of each incubation cavity. A temperature control chamber is fixedly installed on the side of the incubator. The interior of the temperature control chamber contains a main air duct, multiple branch air ducts, and multiple return air ducts. An air inlet cavity is opened on the side wall of the temperature control chamber, which is connected to the main air duct and the outside. One end of the branch air duct is connected to the main air duct, and the other end is connected to the air inlet. One end of the return air duct is embedded in the incubator and connected to the exhaust port, and the other end is connected to the air inlet cavity. A fan is installed inside the main air duct. Temperature regulation mechanisms are installed in each of the multiple branch air ducts, and air valve actuators are installed between the branch air ducts connected to the same incubator cavity and the return air ducts.

[0007] Preferably, the incubation chamber has multiple return air cavities inside, which are connected to the incubation chamber through exhaust vents and are also connected to the return air duct.

[0008] Preferably, a diffuser is installed at the end of the branch duct, the branch duct is connected to the air inlet through the diffuser, and a grille is installed in the air inlet and the air outlet.

[0009] Preferably, the outer wall of the temperature control box is provided with a fresh air inlet that communicates with the air inlet cavity, and the inner wall of the temperature control box is provided with a fusion airflow inlet and multiple return ports. The air inlet cavity is connected to multiple return air ducts through the multiple return ports. The hot air or cold air returning in the return air ducts merges with the fresh air entering from the fresh air inlet to form a fusion airflow, and then the fusion airflow is transported to the main air duct through the fusion airflow inlet.

[0010] Preferably, the temperature regulating mechanism includes a heating element and a cooling element. The heating element is arc-shaped and embedded in the inner wall of the branch air duct. The cooling element is installed on the outer side of the branch air duct and fixedly connected to a transfer plate. The transfer plate is arc-shaped and embedded in the inner wall of the branch air duct. When the heating element is turned on, the airflow transported in the branch air duct can be heated. When the cooling element is turned on, the airflow transported in the branch air duct can be cooled by using the transfer plate.

[0011] Preferably, a first temperature sensor and a second temperature sensor are respectively installed on the inner walls of the plurality of culture cavities and the inner walls of the branch air ducts, and the second temperature sensor is located on the side of the temperature adjustment mechanism near the culture chamber, for real-time detection of the airflow temperature after temperature adjustment.

[0012] Preferably, the damper actuator includes an electric actuator and a main shaft. The electric actuator is fixedly installed on the outside of the branch duct. One end of the main shaft is connected to the electric actuator for transmission, and the other end passes through the branch duct and is provided with and fixedly installed with a first valve plate. The first valve plate is rotatably disposed inside the branch duct and is used to adjust the ventilation cross-sectional area of ​​the branch duct.

[0013] Preferably, a sleeve is fixedly installed between the branch air duct and the return air duct, a transmission shaft is fixedly connected to the end of the main shaft, and the end of the transmission shaft passes through the sleeve and is rotatably connected to the inner wall of the return air duct. A second valve plate is fixedly installed on the outside of the transmission shaft. The second valve plate is rotatably disposed inside the return air duct and rotates synchronously with the first valve plate to adjust the ventilation cross-sectional area of ​​the return air duct.

[0014] Preferably, the front of the culture chamber is rotatably connected to multiple doors via hinges, and each of the multiple doors seals the culture cavity.

[0015] A temperature control system for a constant temperature incubator, comprising a control unit, and a temperature detection module, an airflow regulation module, and a temperature regulation module electrically connected to the control unit. The temperature detection module consists of the first temperature sensor and the second temperature sensor, which is used to collect the actual temperature in each culture cavity and the airflow temperature in each branch air duct after temperature adjustment in real time, and transmit the collected temperature signal to the control unit in real time. The temperature regulation module consists of multiple temperature regulation mechanisms. The control unit compares and analyzes the received real-time temperature signal with the preset temperature, and then independently controls the start-up, shutdown and working power of the arc-shaped heating element and cooling element in each branch air duct, thereby achieving precise temperature control of the corresponding culture cavity. The airflow regulation module consists of a fan and multiple air valve actuators. The control unit can adjust the fan speed according to temperature control requirements, thereby adjusting the total air volume of the main air duct. At the same time, the control unit controls each air valve actuator to synchronously adjust the ventilation cross-sectional area of ​​the corresponding branch air duct and return air duct, so that the airflow velocity in the culture cavity and the ratio of return airflow are adapted to the current temperature control requirements. In addition, the control unit can dynamically adjust the blending ratio of fresh air and return airflow according to the airflow temperature in the return air duct, taking into account both temperature control stability and equipment energy efficiency.

[0016] The technical effects and advantages of this invention are as follows: This constant temperature incubator, through the setting of multiple independent culture cavities within the chamber, enables the simultaneous culture of multiple samples, avoiding cross-influence between samples. The coordination of the main air duct, branch air ducts, and return air duct within the chamber constructs a complete airflow circulation system, reducing temperature loss. Each branch air duct has an independent temperature regulation mechanism, which, in conjunction with the control of the air valve actuator, achieves preliminary independent temperature control for each culture cavity, improving temperature control flexibility. The fan configuration ensures the stability of airflow delivery, providing power support for maintaining the constant temperature environment. Simultaneously, a single fan, in conjunction with the air valve actuator, can control the opening and closing of different branch air ducts, allowing adjustment of the number of culture cavities in use without activating all air duct components, effectively reducing energy waste and improving the equipment's adaptability to different sample culture volumes.

[0017] This constant temperature incubator features a first temperature sensor that directly collects the actual temperature inside the culture cavity, ensuring accurate temperature detection and enabling timely detection of temperature deviations. A second temperature sensor, located on the side of the temperature control mechanism near the incubator body, accurately detects the temperature of the airflow about to enter the culture cavity after temperature regulation. This allows for advance assessment of whether the airflow temperature meets requirements, enabling timely adjustments to the temperature control mechanism and preventing temperature deviations from being transmitted to the culture cavity. The combined use of these two sensors achieves dual monitoring of airflow temperature control and actual cavity temperature, improving the accuracy and reliability of temperature control.

[0018] This constant temperature incubator uses an electric actuator to drive the first valve plate to rotate, achieving automated adjustment of the cross-sectional area of ​​the branch air ducts. This adjustment is highly precise, has a fast response speed, and requires no manual intervention. The first valve plate is positioned inside the branch air duct, ensuring a smooth adjustment process without significant airflow turbulence, thus preventing temperature fluctuations. The air valve actuators are matched with the corresponding branch air ducts of the culture chambers, allowing independent adjustment of the airflow rate in each branch air duct, further enhancing the independence and flexibility of temperature control for each culture chamber. Simultaneously, by independently controlling the start and stop of each air valve actuator, the opening and closing of different branch air ducts can be controlled separately while a single fan is running, thereby flexibly adjusting the number of culture chambers in use to meet the needs of different sample culture scales and reduce ineffective energy consumption. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the incubator and temperature control chamber of the present invention; Figure 4 For the present invention Figure 3 A sectional view; Figure 5This is a schematic diagram of the internal structure of the temperature control box of the present invention; Figure 6 For the present invention Figure 5 A sectional view; Figure 7 This is a cross-sectional view of the connection between the branch air duct and the temperature regulation mechanism of the present invention; Figure 8 This is a cross-sectional view of the connection between the branch air duct, the return air duct, and the damper actuator of the present invention; Figure 9 This is the system control diagram of the present invention.

[0020] In the diagram: 1. Incubator; 11. Incubation cavity; 12. Air inlet; 13. Air outlet; 14. Return air cavity; 15. Door; 2. Temperature control box; 21. Main air duct; 211. Fan; 22. Branch air duct; 221. Flow diffuser; 23. Return air duct; 24. Air inlet cavity; 241. Fresh air inlet; 242. Combined airflow inlet; 243. Return outlet; 25. Temperature regulation mechanism; 251. Heating element; 252. Cooling element; 253. Transfer element; 26. Air valve actuator; 261. Electric actuator; 262. Main shaft; 263. First valve; 264. Transfer shaft; 265. Second valve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention provides, for example Figures 1-9 The constant temperature incubator shown includes: The culture chamber 1 has multiple independent culture cavities 11 inside, and air inlets 12 and air outlets 13 are respectively opened on both sides of the culture cavities 11. Temperature control box 2 is fixedly installed on the side of incubator 1. The interior of temperature control box 2 is equipped with main air duct 21, multiple branch air ducts 22 and multiple return air ducts 23. An air inlet cavity 24 is opened on the side wall of temperature control box 2, which is connected to the main air duct 21 and the outside. One end of the branch air duct 22 is connected to the main air duct 21 and the other end is connected to the air inlet 12. One end of the return air duct 23 is embedded in incubator 1 and connected to the exhaust port 13, and the other end is connected to the air inlet cavity 24. A fan 211 is installed inside the main air duct 21. Temperature adjustment mechanism 25 is installed in each of the multiple branch air ducts 22. A damper actuator 26 is installed between the branch air ducts 22 and the return air ducts 23 connected to the same incubator cavity 11.

[0023] First, the culture samples are placed into multiple independent culture cavities 11 of the culture chamber 1, and the equipment is started after the chamber door 15 is closed. The fan 211 is started in the main air duct 21, and outside air or airflow through recirculation enters the air inlet cavity 24 of the temperature control chamber 2, and enters the main air duct 21 under the action of the fan 211. The airflow in the main air duct 21 is split into multiple branch air ducts 22, and the temperature regulation mechanism 25 in each branch air duct 22 is activated as needed to heat or cool the airflow. After temperature regulation, the airflow... The airflow is delivered through the branch air duct 22 to the air inlets 12 on both sides of the culture cavity 11, and enters the culture cavity 11 to provide a constant temperature environment for the sample. After the airflow completes heat exchange in the culture cavity 11, it enters the return air duct 23 through the exhaust vent 13, and finally flows back to the air inlet cavity 24 to merge with fresh air or other airflows to achieve airflow circulation. The air valve actuator 26 corresponding to the same culture cavity 11 synchronously adjusts the airflow state of the branch air duct 22 and the return air duct 23 to ensure the temperature stability of the culture cavity 11.

[0024] By setting up multiple independent culture cavities 11 in the culture chamber 1, multiple samples can be cultured simultaneously, avoiding cross-influence between samples. The main air duct 21, branch air ducts 22 and return air duct 23 in the temperature control chamber 2 work together to construct a complete airflow circulation system, reducing temperature loss. Each branch air duct 22 is independently equipped with a temperature adjustment mechanism 25, which, together with the control of the air valve actuator 26, achieves preliminary independent temperature control of each culture cavity 11, improving the flexibility of temperature control. The setting of the fan 211 ensures the stability of airflow delivery and provides power support for maintaining a constant temperature environment. At the same time, a single fan 211 can work with the air valve actuator 26 to control the opening and closing of different branch air ducts 22, realizing the adjustment of the number of different culture cavities 11 in use, without having to start all air duct components, effectively reducing energy waste and improving the adaptability of the equipment to different sample culture numbers.

[0025] Furthermore, the interior of the culture chamber 1 is provided with multiple return air cavities 14, which are connected to the culture chamber 11 through the exhaust port 13 and are also connected to the return air duct 23.

[0026] After the airflow that has completed heat exchange in the culture cavity 11 is discharged through the exhaust port 13, it first enters the return air cavity 14 opened inside the culture chamber 1. After the airflow completes preliminary convergence and buffering in the return air cavity 14, it smoothly enters the return air duct 23 through the connection between the return air cavity 14 and the return air duct 23, and finally flows back to the air inlet cavity 24 to participate in the next round of airflow circulation.

[0027] Furthermore, a diffuser 221 is installed at the end of the branch duct 22, and the branch duct 22 is connected to the air inlet 12 through the diffuser 221. Grilles are installed in the air inlet 12 and the air outlet 13.

[0028] The temperature-regulated airflow in the branch air duct 22 is delivered to the diffuser 221 installed at the end of the branch air duct 22. The diffuser 221 disperses the concentrated airflow evenly and then smoothly delivers it into the culture cavity 11 through the air inlet 12. At the same time, the grilles installed in the air inlet 12 and the air outlet 13 filter the airflow, preventing external impurities or debris in the culture cavity 11 from entering the air duct, and also preventing personnel from contacting the internal structure of the air duct and causing damage.

[0029] Furthermore, the outer wall of the temperature control box 2 is provided with a fresh air inlet 241 that is connected to the air inlet cavity 24, and the inner wall of the temperature control box 2 is provided with a fusion airflow inlet 242 and multiple return ports 243. The air inlet cavity 24 is connected to multiple return air ducts 23 through the multiple return ports 243 respectively. The hot air or cold air returning in the return air duct 23 is fused with the fresh air entering from the fresh air inlet 241 to form a fusion airflow, and then the fusion airflow is transported to the main air duct 21 through the fusion airflow inlet 242.

[0030] When the equipment is running, fresh air from outside enters the air intake cavity 24 through the fresh air inlet 241 on the outer wall of the temperature control box 2; at the same time, the return airflow in the return air duct 23 enters the air intake cavity 24 through multiple return ports 243 on the inner wall of the temperature control box 2; the fresh air and the return airflow are fully mixed in the air intake cavity 24 to form a fused airflow with a stable temperature; the fused airflow enters the main air duct 21 through the fused airflow inlet 242 on the inner wall of the temperature control box 2, and is then transported to each culture cavity 11 through the branch air duct 22.

[0031] Furthermore, the temperature regulation mechanism 25 includes a heating element 251 and a cooling element 252. The heating element 251 is arc-shaped and embedded in the inner wall of the branch air duct 22. The cooling element 252 is installed on the outer side of the branch air duct 22 and is fixedly connected to a transfer plate 253. The transfer plate 253 is arc-shaped and embedded in the inner wall of the branch air duct 22. When the heating element 251 is turned on, the airflow transported in the branch air duct 22 can be heated. When the cooling element 252 is turned on, the airflow transported in the branch air duct 22 can be cooled by using the transfer plate 253.

[0032] When it is necessary to raise the airflow temperature inside the branch duct 22, the heating element 251 of the temperature regulating mechanism 25 is activated. The arc-shaped heating element 251 is embedded in the inner wall of the branch duct 22, providing a larger contact area with the airflow and quickly heating the airflow inside the branch duct 22 until the preset temperature is reached. When it is necessary to lower the airflow temperature inside the branch duct 22, the cooling element 252 is activated. The cooling capacity generated by the cooling element 252 is conducted to the interior of the branch duct 22 through the fixedly connected arc-shaped transfer piece 253. The arc-shaped transfer piece 253 is in full contact with the airflow, quickly cooling the airflow until the preset temperature is reached. After heating or cooling is completed, the temperature regulating mechanism 25 starts or stops or adjusts its power according to the signal from the temperature sensor to maintain a stable airflow temperature.

[0033] Furthermore, a first temperature sensor and a second temperature sensor are respectively installed on the inner walls of the multiple culture cavities 11 and the inner walls of the branch air ducts 22. The second temperature sensor is located on the side of the temperature adjustment mechanism 25 near the culture chamber 1, and is used to detect the airflow temperature after temperature adjustment in real time.

[0034] During equipment operation, first temperature sensors installed on the inner walls of multiple culture cavities 11 collect the actual temperature signals in each culture cavity 11 in real time; second temperature sensors installed on the inner walls of multiple branch air ducts 22 collect the airflow temperature signals in each branch air duct 22 after temperature regulation in real time; the temperature signals collected by the two sensors are transmitted in real time to the control unit of the subsequent temperature control system to provide data support for temperature regulation.

[0035] The first temperature sensor directly collects the actual temperature inside the culture cavity 11, ensuring the accuracy of temperature detection and enabling timely detection of temperature deviations within the culture cavity 11. The second temperature sensor is located on the side of the temperature regulating mechanism 25 near the culture chamber 1, and can accurately detect the temperature of the airflow that is about to enter the culture cavity 11 after temperature regulation. This allows for advance prediction of whether the airflow temperature meets the requirements and timely adjustment of the working state of the temperature regulating mechanism 25, preventing temperature deviations from being transmitted to the culture cavity 11. The combined setup of the two sensors achieves dual monitoring of airflow temperature control and actual cavity temperature detection, improving the accuracy and reliability of temperature control.

[0036] Furthermore, the damper actuator 26 includes an electric actuator 261 and a main shaft 262. The electric actuator 261 is fixedly installed on the outside of the branch duct 22. One end of the main shaft 262 is connected to the electric actuator 261 for transmission, and the other end passes through the branch duct 22 and is provided with and fixedly installed with a first valve plate 263. The first valve plate 263 is rotatably disposed inside the branch duct 22 and is used to adjust the ventilation cross-sectional area of ​​the branch duct 22.

[0037] The control unit of the temperature control system sends a control command to the electric actuator 261 of the air valve actuator 26 based on the temperature detection signal. The electric actuator 261 is fixedly installed on the outside of the branch air duct 22. After receiving the command, it drives the main shaft 262 to rotate. One end of the main shaft 262 is connected to the electric actuator 261, and the other end passes through the branch air duct 22 and drives the fixedly installed first valve plate 263 to rotate inside the branch air duct 22. By adjusting the rotation angle of the first valve plate 263, the ventilation cross-sectional area of ​​the branch air duct 22 is adjusted, thereby adjusting the airflow rate entering the corresponding culture cavity 11 to meet the temperature control requirements.

[0038] The electric actuator 261 drives the first valve plate 263 to rotate, realizing the automatic adjustment of the ventilation cross-sectional area of ​​the branch air duct 22. The adjustment is highly accurate and the response speed is fast, requiring no manual intervention. The rotation of the first valve plate 263 is set inside the branch air duct 22, and the adjustment process is smooth without generating obvious airflow turbulence, thus avoiding temperature fluctuations. The air valve actuator 26 is matched with the branch air duct 22 of the corresponding culture cavity 11, and can independently adjust the airflow of each branch air duct 22, further improving the independence and flexibility of temperature control of each culture cavity 11. At the same time, by independently controlling the start and stop of each air valve actuator 26, the opening and closing of different branch air ducts 22 can be controlled separately when a single fan 211 is running, thereby flexibly adjusting the number of culture cavities 11 in use to meet the needs of different sample culture scales and reduce ineffective energy consumption.

[0039] Furthermore, a sleeve is fixedly installed between the branch air duct 22 and the return air duct 23. A transmission shaft 264 is fixedly connected to the end of the main shaft 262, and the end of the transmission shaft 264 passes through the sleeve and is rotatably connected to the inner wall of the return air duct 23. A second valve plate 265 is fixedly installed on the outside of the transmission shaft 264. The second valve plate 265 is rotatably disposed inside the return air duct 23 and rotates synchronously with the first valve plate 263 to adjust the ventilation cross-sectional area of ​​the return air duct 23.

[0040] When the electric actuator 261 drives the main shaft 262 to rotate, the transmission shaft 264 fixedly connected to the end of the main shaft 262 rotates synchronously. The transmission shaft 264 passes through the sleeve fixedly installed between the branch air duct 22 and the return air duct 23, and its end is rotatably connected to the inner wall of the return air duct 23. The rotation process is smooth and without jamming. The second valve plate 265 fixedly installed on the outside of the transmission shaft 264 rotates synchronously with the transmission shaft 264, and the rotation direction and angle are consistent with those of the first valve plate 263, thereby adjusting the ventilation cross-sectional area of ​​the return air duct 23 so that the air intake of the branch air duct 22 and the return air volume of the return air duct 23 are matched.

[0041] The compact structural design eliminates the need for additional drive components, reducing equipment costs while improving the synchronization and reliability of adjustment. Furthermore, the second valve plate 265 starts and stops synchronously with the first valve plate 263, enabling the synchronous opening and closing of the corresponding branch air duct 22 and return air duct 23 when a single fan 211 is running. This avoids ineffective airflow circulation in the air ducts corresponding to unused culture cavities 11, further saving energy and ensuring overall temperature control stability when adjusting the number of culture cavities 11.

[0042] Furthermore, the front of the culture chamber 1 is connected to multiple doors 15 via hinges, and each of the multiple doors 15 seals the culture cavity 11.

[0043] Multiple doors 15 correspond one-to-one with multiple culture cavities 11, enabling independent opening and closing of a single culture cavity 11. When samples are taken out or placed in a cavity, the sealing and constant temperature environment of other culture cavities 11 will not be affected, thus improving the flexibility of use.

[0044] A temperature control system for a constant temperature incubator, comprising a control unit, and a temperature detection module, an airflow regulation module, and a temperature regulation module, all electrically connected to the control unit. The temperature detection module consists of a first temperature sensor and a second temperature sensor, which are used to collect the actual temperature in each culture cavity 11 and the temperature of the airflow in each branch air duct 22 after temperature adjustment in real time, and transmit the collected temperature signal to the control unit in real time. The temperature regulation module consists of multiple temperature regulation mechanisms 25. The control unit compares and analyzes the received real-time temperature signal with the preset temperature, and independently controls the start-up, shutdown and working power of the arc heating element 251 and cooling element 252 in each branch air duct 22, thereby achieving precise temperature control of the corresponding culture cavity 11. The airflow regulation module consists of a fan 211 and multiple air valve actuators 26. The control unit can adjust the speed of the fan 211 according to the temperature control requirements, thereby adjusting the total air volume of the main air duct 21. At the same time, the control unit controls each air valve actuator 26 to synchronously adjust the ventilation cross-sectional area of ​​the corresponding branch air duct 22 and return air duct 23, so that the airflow velocity in the culture cavity 11 and the ratio of return airflow are adapted to the current temperature control requirements. In addition, the control unit can dynamically adjust the blending ratio of fresh air and return airflow according to the airflow temperature in the return air duct 23, taking into account both temperature control stability and equipment energy saving.

[0045] The temperature control system coordinates the temperature detection module, airflow regulation module, and temperature regulation module through the control unit, realizing the automation and intelligence of the temperature control process. It eliminates the need for real-time manual monitoring and adjustment, reducing the intensity of manual labor. The dual detection design of the temperature detection module provides reliable data support for precise temperature control. The comparative analysis function of the control unit can quickly respond to temperature deviations, improving the temperature control accuracy. The temperature regulation mechanism 25 of each branch air duct 22 can be independently controlled. With the synchronous adjustment of the air valve actuator 26, it realizes independent and precise temperature control of multiple culture cavities 11, adapting to the culture needs of different samples. The dynamic adjustment of fan speed 211 and the fusion ratio of fresh air and return airflow ensures temperature control stability while effectively reducing equipment energy consumption and improving equipment practicality and economy. At the same time, the control unit can control the opening and closing of different branch air ducts 22 by coordinating the control of each air valve actuator 26 while a single fan 211 is running, flexibly adjusting the number of activated culture cavities 11, accurately adapting to different sample culture scales, further optimizing energy utilization, and improving equipment adaptability and practicality.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A constant temperature incubator, characterized in that, include: The culture chamber (1) has multiple independent culture cavities (11) inside, and air inlets (12) and air outlets (13) are respectively provided on both sides of the culture cavities (11). A temperature control box (2) is fixedly installed on the side of the incubator (1). The temperature control box (2) is equipped with a main air duct (21), multiple branch air ducts (22) and multiple return air ducts (23). An air inlet cavity (24) is opened on the side wall of the temperature control box (2) and is connected to the main air duct (21) and the outside. One end of the branch air duct (22) is connected to the main air duct (21) and the other end is connected to the air inlet (12). One end of the return air duct (23) is embedded in the incubator (1) and is connected to the exhaust port (13), and the other end is connected to the air inlet cavity (24). A fan (211) is installed inside the main air duct (21). A temperature regulating mechanism (25) is installed in each of the multiple branch air ducts (22). A wind valve actuator (26) is installed between the branch air ducts (22) connected to the same incubator cavity (11) and the return air duct (23).

2. The constant temperature incubator according to claim 1, characterized in that, The culture chamber (1) has multiple return air cavities (14) inside. The return air cavities (14) are connected to the culture cavity (11) through the exhaust port (13), and the return air cavities (14) are connected to the return air duct (23).

3. The constant temperature incubator according to claim 1, characterized in that, The branch duct (22) is equipped with a diffuser hood (221) at its end. The branch duct (22) is connected to the air inlet (12) through the diffuser hood (221). The air inlet (12) and the air outlet (13) are equipped with grilles.

4. A constant temperature incubator according to claim 1, characterized in that, The outer wall of the temperature control box (2) is provided with a fresh air inlet (241) that is connected to the air inlet cavity (24). The inner wall of the temperature control box (2) is provided with a fusion airflow inlet (242) and multiple return ports (243). The air inlet cavity (24) is connected to multiple return air ducts (23) through multiple return ports (243). The hot air or cold air returning in the return air duct (23) is fused with the fresh air entering from the fresh air inlet (241) to form a fusion airflow. Then, the fusion airflow is transported to the main air duct (21) through the fusion airflow inlet (242).

5. A constant temperature incubator according to claim 1, characterized in that, The temperature regulation mechanism (25) includes a heating element (251) and a cooling element (252). The heating element (251) is arc-shaped and embedded in the inner wall of the branch air duct (22). The cooling element (252) is installed on the outer side of the branch air duct (22) and is fixedly connected to a transfer plate (253). The transfer plate (253) is arc-shaped and embedded in the inner wall of the branch air duct (22). When the heating element (251) is turned on, the airflow transported in the branch air duct (22) can be heated. When the cooling element (252) is turned on, the airflow transported in the branch air duct (22) can be cooled by the transfer plate (253).

6. A constant temperature incubator according to claim 1, characterized in that, A first temperature sensor and a second temperature sensor are respectively installed on the inner wall of the multiple culture cavities (11) and the inner wall of the branch air duct (22). The second temperature sensor is located on the side of the temperature adjustment mechanism (25) close to the culture chamber (1) and is used to detect the airflow temperature after temperature adjustment in real time.

7. A constant temperature incubator according to claim 1, characterized in that, The damper actuator (26) includes an electric actuator (261) and a main shaft (262). The electric actuator (261) is fixedly installed on the outside of the branch duct (22). One end of the main shaft (262) is connected to the electric actuator (261) for transmission, and the other end passes through the branch duct (22) and is provided with and fixedly installed with a first valve plate (263). The first valve plate (263) is rotatably disposed inside the branch duct (22) for adjusting the ventilation cross-sectional area of ​​the branch duct (22).

8. A constant temperature incubator according to claim 7, characterized in that, A sleeve is fixedly installed between the branch air duct (22) and the return air duct (23). A transmission shaft (264) is fixedly connected to the end of the main shaft (262). The end of the transmission shaft (264) passes through the sleeve and is rotatably connected to the inner wall of the return air duct (23). A second valve plate (265) is fixedly installed on the outside of the transmission shaft (264). The second valve plate (265) is rotatably disposed inside the return air duct (23) and rotates synchronously with the first valve plate (263) to adjust the ventilation cross-sectional area of ​​the return air duct (23).

9. A constant temperature incubator according to claim 1, characterized in that, The front of the culture chamber (1) is connected to multiple doors (15) by hinges, and the multiple doors (15) respectively seal the culture cavity (11).

10. A temperature control system for a constant temperature incubator, employing the constant temperature incubator described in any one of claims 1-9, characterized in that, The temperature control system includes a control unit, and a temperature detection module, an airflow regulation module, and a temperature regulation module, which are electrically connected to the control unit respectively. The temperature detection module consists of the first temperature sensor and the second temperature sensor, and is used to collect the actual temperature in each culture cavity (11) and the airflow temperature in each branch air duct (22) after temperature adjustment in real time, and transmit the collected temperature signal to the control unit in real time. The temperature regulation module consists of multiple temperature regulation mechanisms (25). The control unit compares and analyzes the received real-time temperature signal with the preset temperature, and independently controls the start-up and shutdown and working power of the arc heating plate (251) and cooling plate (252) in each branch air duct (22), thereby achieving precise temperature regulation of the corresponding culture cavity (11). The airflow regulation module consists of a fan (211) and multiple air valve actuators (26). The control unit can adjust the speed of the fan (211) according to the temperature control requirements, thereby adjusting the total air volume of the main air duct (21). At the same time, the control unit controls each air valve actuator (26) to synchronously adjust the ventilation cross-sectional area of ​​the corresponding branch air duct (22) and return air duct (23) so that the airflow velocity in the culture cavity (11) and the ratio of return airflow are adapted to the current temperature control requirements. In addition, the control unit can dynamically adjust the fusion ratio of fresh air and return air according to the air temperature in the return air duct (23), taking into account both temperature control stability and equipment energy saving.

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