A precision environmental control laboratory

Abstract

This application relates to a precision environmental control laboratory, belonging to the technical field of laboratory environmental control. It includes a laboratory box body, which is connected with an air outlet duct and a return air duct. The air outlet duct and the return air duct are jointly connected to a air supply box body. A cooling component and a primary heating component are arranged in the air supply box body. A sound-absorbing shell is installed in the air supply box body. A motor and a sound-absorbing board are arranged in the sound-absorbing shell. The sound-absorbing board is arranged to wrap around the circumference of the motor. A number of heat dissipation air ducts are opened along the length direction of the outer wall of the fan. The heat dissipation air ducts penetrate through to the circumferential surface of the motor. The motor is connected with a centrifugal fan. After the air in the laboratory box body passes through the air outlet duct and enters the air supply box body, the air sequentially passes through the cooling component, the centrifugal fan, the heat dissipation air ducts, the primary heating component and the return air duct, and finally the air flows back into the laboratory box body again. This application has the effect of being able to improve the heat dissipation performance of the motor while reducing noise.

Description

Technical Field

[0001] This application relates to the technical field of laboratory environmental control, and particularly to a precision environmental control laboratory. Background Art

[0002] With the development of technology, many high-precision laboratories have put forward higher and higher requirements for environmental factors such as temperature, humidity, cleanliness, and noise. Especially in laboratories where some experimental equipment is particularly sensitive to environmental noise, how to effectively reduce noise and ensure the accuracy of experimental results has become a key issue. Generally, a fan is installed in the air supply system of the laboratory for air circulation and temperature regulation. However, the fan will generate relatively large noise during operation, which will interfere with the normal operation of precision instruments and thus affect the accuracy of the experiment.

[0003] The existing noise control methods generally set sound-absorbing materials, such as sound-absorbing cotton, in the laboratory to reduce noise. Although the sound-absorbing cotton can effectively reduce the noise generated during the operation of the fan, it also has a strong heat preservation effect. This characteristic causes problems in specific application scenarios: when a large amount of sound-absorbing cotton is used, the heat dissipation performance of the motor in the enclosed space is greatly reduced, resulting in the motor being possibly damaged due to overheating. This problem is particularly prominent in large laboratories. The larger the laboratory area, the higher the requirement for air circulation, the greater the required motor power, and the stronger the corresponding noise, thus more sound-absorbing cotton is needed for sound insulation. However, too much sound-absorbing material will further weaken the heat dissipation performance of the motor, forming a vicious cycle and affecting the long-term stable operation of the equipment. Summary of the Invention

[0004] In order to be able to improve the heat dissipation performance of the motor while reducing noise, this application provides a precision environmental control laboratory.

[0005] A precision environmental control laboratory provided by this application adopts the following technical solutions:

[0006] A precision environmental control laboratory includes a laboratory box body. The laboratory box body is connected with an air outlet duct and a return air duct. The air outlet duct and the return air duct are jointly connected with an air supply box body. A cooling component and a primary heating component are arranged in the air supply box body. A sound-absorbing shell is installed in the air supply box body. A motor and a sound-absorbing plate are arranged in the sound-absorbing shell. The sound-absorbing plate is wrapped around the circumference of the motor. A plurality of heat dissipation air ducts are opened along the length direction of the outer wall of the fan. The heat dissipation air ducts penetrate through to the circumferential surface of the motor. The motor is connected with a centrifugal fan;

[0007] After the air in the laboratory box passes through the air outlet duct and enters the air supply box, the air sequentially passes through the cooling component, the centrifugal fan, the heat dissipation duct, the primary heating component, and the return air duct, and finally the air flows back into the laboratory box again.

[0008] By adopting the above technical solution, the motor drives the centrifugal fan to start, enabling the air to form a cycle in the laboratory box and the air supply box. The air flowing back from the laboratory is first cooled by the cooling component, and then passes through the heat dissipation channel to dissipate heat from the motor. In general high-precision laboratories, the air needs to be cooled first and then heated through multiple stages to accurately reach the temperature requirements of the laboratory. Therefore, the heat source of the motor is just used to initially heat the air, and then the temperature is regulated again by the primary heating component. This not only solves the problem of motor heat dissipation but also reasonably utilizes the heat generated during the operation of the motor to preheat the air, improving the overall energy efficiency of the system. And the sound-absorbing board is directly arranged around the motor, which can also achieve a good sound insulation effect.

[0009] Optionally, an air outlet is provided at the top of the laboratory box, air return openings are provided at the bottoms on both sides of the laboratory box, and a first air duct and a second air duct are provided on both sides of the laboratory box, with the first air duct above the second air duct;

[0010] There are two air outlet ducts, two return air ducts, and two air supply boxes. The first air duct is connected to the air outlet and the air outlet duct, and the second air duct is connected to the air return opening and the return air duct.

[0011] By adopting the above technical solution, this design optimizes the air flow path, forming a reasonable cycle of supplying air from the top and returning air from the bottom, making the air distribution in the laboratory more uniform. The design of double air supply boxes, double air outlet ducts, and double return air ducts greatly enhances the redundancy and stability of the system. When a failure occurs in a certain air duct or air supply box, the other system can continue to maintain the air circulation and treatment functions, without causing a significant impact on the experimental environment. And in a large laboratory box, with the design of double air supply boxes, a stable air circulation can be ensured, and two smaller-power motors can be used to replace a single high-power motor, which is beneficial to reducing noise.

[0012] Optionally, sound-absorbing blocks are provided at the air outlet and air return of the air supply box. The sound-absorbing blocks are provided with air guiding channels, and the air guiding channels are multi-bending channels, and the air is discharged from the sound-absorbing blocks through the air guiding channels.

[0013] By adopting the above technical solution, the multiple bent air guiding channels provided in the sound absorption block increase the path length of air flow and guide the air flow to repeatedly turn back in complex curves. Such a design makes the air have to change direction multiple times when flowing through, consuming part of its kinetic energy, weakening the high-frequency vibration in the air flow, and thus reducing the generation of noise. Thereby, the wind noise interference in the laboratory can be significantly reduced.

[0014] Optionally, the cooling assembly includes a spiral water pipe. A number of support frames are installed in the air supply box, and the number of the support frames are jointly connected to the spiral water pipe. The spiral water pipe is connected with a water inlet pipe and a drain pipe. The water inlet pipe is arranged adjacent to the return air duct, the drain pipe is arranged away from the return air duct, and both the water inlet pipe and the drain pipe extend out of the air supply box body.

[0015] By adopting the above technical solution, the design that the water inlet pipe and the drain pipe extend out of the air supply box body facilitates the connection with an external water circulation system. The spiral water pipe effectively improves the heat exchange efficiency with the air flow by increasing the surface area of the cooling water pipe. When the air flow passes through the spiral water pipe, more air can come into contact with the cooling water pipe, taking away heat and quickly cooling down. A large-area cooling effect can be achieved within a limited space. The setting of the support frames ensures the stability of the cooling assembly, and at the same time enables the air flow to be cooled from the outer peripheral surface of the spiral water pipe, further improving the cooling effect of the air flow.

[0016] Optionally, the centrifugal fan is coaxially connected with a centrifugal pump. The drainage end of the spiral water pipe is connected to the water inlet end of the centrifugal pump, and the drain pipe is connected to the water outlet end of the centrifugal pump.

[0017] By adopting the above technical solution, the motor drives the centrifugal fan and the centrifugal pump simultaneously through a coaxial structure, reducing the complexity of the mechanical structure and eliminating the need for an additional drive system. The synchronous flow of air and water ensures the coordination of air cooling and water circulation. When the centrifugal fan starts, water starts to circulate while the air is flowing, ensuring that the cooling water always matches the air flow rate and providing a more balanced heat exchange effect.

[0018] Moreover, in a large laboratory box body, due to the increase in volume and the internal air circulation path, the water circulation system needs to handle a larger water flow rate and higher water pressure. At this time, it may be difficult to maintain a stable water circulation solely by an external water pump. Especially when the air temperature in the air supply box body is relatively high, the water cooling efficiency will decrease. Therefore, introducing a centrifugal pump into the air supply box can enhance the local water flow power and work in coordination with the external water pump, providing stronger power for water circulation in a large system and ensuring a stable and efficient water flow rate in the spiral water pipe. In this way, even if the laboratory box body is large and the internal air temperature is high, sufficient cooling water circulation can be ensured to maintain the thermal balance of the system.

[0019] Meanwhile, large laboratories have relatively high requirements for the response time of environmental temperature changes. With the assistance of a centrifugal pump, the water circulation speed can be accelerated, the cooling response speed of the system can be improved, and local temperature rise problems caused by slow water flow can be avoided. This can more precisely control the temperature in the laboratory.

[0020] Optionally, the centrifugal pump includes a water guide seat, the water guide seat is provided with an annular water channel, a water inlet channel and a water drainage channel, both the water inlet channel and the water drainage channel are communicated with the annular water channel, a partition is arranged in the water guide seat, and the partition is arranged in the annular water channel to separate the water inlet channel and the water drainage channel;

[0021] The water guide seat is rotatably connected with a turntable, the turntable is provided with an eccentric convex disk, the eccentric convex disk is provided with an eccentric ring buckle, both ends of the eccentric ring buckle are provided with soft pads, the soft pads are abutted against the partition, and when the eccentric ring buckle moves, it cooperates with the inner wall of the annular water channel to squeeze the fluid in the annular water channel and discharge it from the water drainage channel.

[0022] Optionally, the primary heating component includes a honeycomb carrier and a first temperature sensor. The air inlet end of the honeycomb carrier is arranged adjacent to the air outlet end of the sound-absorbing shell. The first temperature sensor is fixed in the air supply box body, and the first temperature sensor is located between the honeycomb carrier and the sound-absorbing shell. A first electric heating wire is arranged on the honeycomb carrier.

[0023] By adopting the above technical solution, the first temperature sensor is fixed between the honeycomb carrier and the sound-absorbing shell, and can monitor the temperature change of the air in real time. Thus, it can be used to determine what temperature the first electric heating wire should be controlled at. The first electric heating wire is used to heat the honeycomb carrier, and heat exchange occurs when the air passes through the honeycomb carrier, so as to adjust the temperature of the air in turn.

[0024] The honeycomb carrier can not only achieve the uniformity of air flow, but also improve the heating efficiency. Due to its large surface area, the air can quickly absorb heat, thus achieving a relatively fast temperature rise. The honeycomb structure can make the air evenly distributed in each channel when passing through, avoiding local air flow disorder caused by uneven flow velocity in the air duct. This helps to maintain the stability of the air flow, thus effectively reducing wind noise.

[0025] Optionally, a second electric heating wire is built into the sound-absorbing block at the air outlet of the air supply box body, and a second temperature sensor is arranged between the sound-absorbing block and the primary heating component. The second temperature sensor is fixed in the air supply box body.

[0026] By adopting the above technical solution, if the temperature is still too low detected by the second temperature sensor after primary heating, the second electric heating wire can be started to adjust the temperature of the air again, and precise temperature control can be achieved through multi-stage temperature control.

[0027] Optionally, the air outlet of the laboratory box is installed with a filter, and the air supply box is installed with a control cabinet.

[0028] By adopting the above technical solution, the filter is installed at the air outlet, which can effectively filter out dust, particles, impurities, etc. in the air. By pre-filtering the air, it can ensure that the air entering the laboratory box is cleaner. The control cabinet can centrally control various components in the entire air circulation system, such as centrifugal fans, motors, primary heating components, cooling components, etc. Through the control cabinet, users can accurately adjust parameters such as air supply volume, heating temperature, cooling speed, etc. to ensure that the temperature and airflow in the laboratory remain within the preset range.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The motor drives the centrifugal fan to start, so that the air can circulate in the laboratory box and the air supply box. The air returning from the laboratory is first cooled by the cooling component, and then passes through the heat dissipation channel to dissipate heat and cool the motor. In general high-precision laboratories, the air needs to be cooled first, and then undergo multiple heating processes to accurately meet the temperature requirements of the laboratory. Therefore, the heat source of the motor is used to heat the air for the first time, and then the temperature is adjusted again through the first-level heating component. It not only solves the problem of motor heat dissipation, but also reasonably utilizes the heat generated during the operation of the motor to preheat the air, thereby improving the overall energy efficiency of the system. The sound-absorbing panels are set directly around the motor, which can also achieve a good sound insulation effect;

[0031] 2. The design of double air supply boxes, double air outlet ducts and double air return ducts greatly enhances the redundancy and stability of the system. When a certain air duct or air supply box fails, the other system can continue to maintain the air circulation and processing functions without causing significant impact on the experimental environment;

[0032] 3. The multiple curved air guide channels set in the sound-absorbing block increase the length of the air flow path and guide the airflow to repeatedly turn back in complex bends. This design forces the air to change direction multiple times when it flows through, consumes part of the kinetic energy, weakens the high-frequency vibration in the airflow, thereby reducing the generation of noise, and can significantly reduce the wind noise interference in the laboratory;

[0033] 4. The motor drives the centrifugal fan and centrifugal pump at the same time through a coaxial structure, which reduces the complexity of the mechanical structure and does not require an additional drive system. The synchronous flow of wind and water ensures the coordination of air cooling and water circulation. When the centrifugal fan is started, the water starts to circulate while the air flows, ensuring that the cooling water always matches the flow rate of the air, providing a more balanced heat exchange effect;

[0034] 5. Introducing a centrifugal pump into the air supply box can enhance the local water flow power. Working in cooperation with an external water pump, it can provide stronger power for water circulation in a large-scale system, ensuring stable and efficient water flow velocity in the spiral water pipe. In this way, even if the laboratory box is large and the internal air temperature is high, sufficient cooling water circulation can be ensured to maintain the thermal balance of the system. Description of the Drawings

[0035] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0036] Figure 2 is a schematic diagram of the structure for embodying the air outlet and the air return opening in an embodiment of the present application.

[0037] Figure 3 is a schematic diagram of the structure for embodying the first air duct and the second air duct in an embodiment of the present application.

[0038] Figure 4 is a schematic diagram of the internal structure of the air supply box in an embodiment of the present application.

[0039] Figure 5 is a schematic diagram of the structure for embodying the sound-absorbing block in an embodiment of the present application.

[0040] Figure 6 is a schematic diagram of the structure for embodying the sound-absorbing shell, the motor, and the heat dissipation air duct in an embodiment of the present application.

[0041] Figure 7 is a schematic diagram of the structure for embodying the centrifugal pump in an embodiment of the present application.

[0042] Figure 8 is a schematic diagram of the structure for embodying the primary heating component in an embodiment of the present application.

[0043] Description of the reference numerals: 1. Laboratory box; 11. Air outlet; 12. Filter screen; 13. Air return opening; 14. First air duct; 15. Second air duct; 16. Air outlet pipe; 17. Air return pipe; 2. Air supply box; 3. Cooling component; 31. Spiral water pipe; 32. Support frame; 33. Water inlet pipe; 34. Drain pipe; 41. Sound-absorbing shell; 42. Motor; 43. Sound-absorbing board; 431. Heat dissipation air duct; 44. Centrifugal fan; 5. Primary heating component; 51. Honeycomb carrier; 52. First temperature sensor; 53. First electric heating wire; 6. Sound-absorbing block; 61. Air guiding channel; 62. Second electric heating wire; 63. Second temperature sensor; 7. Control cabinet; 8. Centrifugal pump; 81. Water guiding seat; 811. Annular water channel; 812. Water inlet channel; 813. Drainage channel; 82. Partition board; 85. Turntable; 86. Eccentric convex disc; 87. Eccentric ring buckle; 88. Soft pad. Detailed Description of the Embodiment

[0044] The following is combined with Figure 1-8 This application is described in further detail.

[0045] The embodiment of the present application discloses a precision environment control laboratory.

[0046] like Figure 1 , Figure 2 and Figure 3 The precision environment control laboratory includes a laboratory box 1, and an air outlet 11 is provided on the top of the laboratory box 1, and a filter 12 is installed on the air outlet 11. Return air outlets 13 are provided at the bottom of both sides of the laboratory box 1, and a first air duct 14 and a second air duct 15 are provided on both sides of the laboratory box 1. The first air duct 14 and the second air duct 15 are both connected to the end of the laboratory box 1 away from the entrance door, and the first air duct 14 is located above the second air duct 15; the two first air ducts 14 are connected to the air outlet duct 16, and the two second air ducts 15 are connected to the return air duct 17.

[0047] like Figure 4 The air outlet duct 16 and the air return duct 17 on the same side are connected to the air supply box 2, and the air supply box 2 is provided with a cooling component 3, a sound absorbing shell 41, a primary heating component 5 and a sound absorbing block 6. The air supply box 2 is installed with a control cabinet 7. The control cabinet 7 is located on one side of the sound absorbing shell 41.

[0048] like Figure 4 and Figure 5 There are two sound absorbing blocks 6, which are respectively located at the air outlet and the air return of the air supply box 2. The sound absorbing block 6 is provided with an air guide channel 61, which is a multi-bend channel, i.e., a labyrinth channel. The air is discharged from the sound absorbing block 6 through the air guide channel 61, and the two sound absorbing blocks 6 are respectively adapted to the air outlet duct 16 and the air return duct 17. The air guide channel 61 of the sound absorbing block 6 located at the air outlet of the air supply box 2 is provided with a second electric heating wire 62 along its extension direction, and a second temperature sensor 63 is installed in the air supply box 2. The second temperature sensor 63 is arranged near the air inlet end of the sound absorbing block 6 located at the air outlet of the air supply box 2.

[0049] The multi-bend air guide channel 61 provided in the sound absorbing block 6 increases the path length of the air flow and guides the air flow to repeatedly turn back in the complex bends. This design forces the air to change direction multiple times when it flows through, consumes part of the kinetic energy, weakens the high-frequency vibration in the air flow, and thus reduces the generation of noise. This can significantly reduce the wind noise interference in the laboratory.

[0050] like Figure 4, the cooling component 3 is installed at the bottom of the air supply box body 2. The cooling component 3 includes a spiral water pipe 31, and the spiral water pipe 31 extends along the direction away from the return air duct 17. A number of support frames 32 are installed in the air supply box body 2, and the number of support frames 32 are jointly connected to the spiral water pipe 31, so that the spiral water pipe 31 is suspended in the air supply box body 2. The spiral water pipe 31 is connected with a water inlet pipe 33 and a drain pipe 34. The water inlet pipe 33 is arranged adjacent to the return air duct 17. One end of the spiral water pipe 31 away from the return air duct 17 is connected with a centrifugal pump 8, and the drain pipe 34 is connected with the water outlet end of the centrifugal pump 8. Both the drain pipe 34 and the water inlet pipe 33 extend out of the air supply box body 2 and are connected with an external cooling system. The drain pipe 34 is located above the water inlet pipe 33.

[0051] And in the large laboratory box body 1, due to the increase in volume and the internal air circulation path, the water circulation system needs to handle a larger water flow rate and a higher water pressure. At this time, it may be difficult for a single external water pump to maintain a stable water circulation. Especially when the air temperature in the air supply box body 2 is relatively high, the efficiency of water cooling will be reduced to some extent. Therefore, introducing the centrifugal pump 8 into the air supply box body 2 can enhance the local water flow power and work in coordination with the external water pump, which can provide stronger power for the water circulation in a large system and ensure the stable and efficient water flow rate in the spiral water pipe 31. In this way, even if the laboratory box body 1 is large and the internal air temperature is high, it can ensure sufficient cooling water circulation to maintain the thermal balance of the system.

[0052] Such as Figure 6 , the sound-absorbing shell 41 is fixed in the air supply box body 2, and the sound-absorbing shell 41 is located above the centrifugal pump 8. A motor 42 and a sound-absorbing plate 43 are arranged in the sound-absorbing shell 41. The sound-absorbing plate 43 is arranged to wrap around the circumference of the motor 42. A number of heat dissipation air ducts 431 are opened along the length direction of the outer wall of the fan (i.e., the vertical direction) of the sound-absorbing plate 43. The heat dissipation air ducts 431 penetrate through the circumferential surface of the motor 42, the top surface and the bottom surface of the sound-absorbing plate 43. The motor 42 is arranged upside down (i.e., the drive shaft is downward). The motor 42 is connected with a centrifugal fan 44, and the centrifugal fan 44 is coaxially connected with the centrifugal pump 8.

[0053] The motor 42 drives the centrifugal fan 44 to start, so that the air can circulate in the laboratory box 1 and the air supply box 2. The wind returning from the laboratory box 1 is first cooled by the cooling component 3, and then passes through the heat dissipation duct 431 to dissipate heat and cool the motor 42. In general high-precision laboratories, the wind needs to be cooled first and then heated in multiple passes to accurately meet the temperature requirements of the laboratory. Therefore, the heat source of the motor 42 is used to heat the air for the first time, and then the temperature is adjusted again through the primary heating component 5 and the second electric heating wire 62. It not only solves the problem of heat dissipation of the motor 42, but also reasonably utilizes the heat generated during the operation of the motor 42 to preheat the air, thereby improving the overall energy efficiency of the system. The sound absorbing panel 43 is directly arranged around the motor 42, which can also achieve a good sound insulation effect.

[0054] At the same time, the motor 42 drives the centrifugal fan 44 and the centrifugal pump 8 at the same time through a coaxial structure, which reduces the complexity of the mechanical structure and does not require an additional drive system. The synchronous flow of wind and water ensures the coordination of air cooling and water circulation. When the centrifugal fan 44 is started, the water starts to circulate while the air flows, ensuring that the cooling water always matches the flow rate of the air, providing a more balanced heat exchange effect.

[0055] like Figure 7 The centrifugal pump 8 may be a centrifugal pump 8 commonly used on the market. The centrifugal pump 8 provided in the embodiment of the present application includes a water guide seat 81, the water guide seat 81 is provided with an annular water channel 811, an inlet channel 812 and a drain channel 813, the inlet channel 812 and the drain channel 813 are both connected to the annular water channel 811, and a partition 82 is provided in the water guide seat 81, and the partition 82 is arranged in the annular water channel 811 to separate the inlet channel 812 and the drain channel 813;

[0056] The water guide seat 81 is rotatably connected with a rotating disk 85, the rotating disk 85 is provided with an eccentric protrusion disk 86, the eccentric protrusion disk 86 is installed with an eccentric ring buckle 87, and both ends of the eccentric ring buckle 87 are provided with soft pads 88, and the soft pads 88 abut against the partition 82. The drain pipe 34 of the spiral water pipe 31 is connected with the water inlet 812, the drain pipe 34 is connected with the drain channel 813, and the centrifugal fan 44 is coaxially connected with the rotating disk 85. When the eccentric ring buckle 87 moves, it cooperates with the inner wall of the annular water channel 811, so that the fluid in the annular water channel 811 is squeezed and discharged from the drain channel 813.

[0057] like Figure 4 and Figure 8, the primary heating component 5 is located above the sound-absorbing shell 41. The primary heating component 5 includes a honeycomb carrier 51 and a first temperature sensor 52. The honeycomb carrier 51 extends along the direction close to the air outlet duct 16. The first temperature sensor 52 is fixed inside the air supply box body 2, and the first temperature sensor 52 is located between the honeycomb carrier 51 and the sound-absorbing shell 41. A first electric heating wire 53 is arranged on the honeycomb carrier 51. The first electric heating wire 53 is fixed on the end face of the exhaust end of the honeycomb carrier 51.

[0058] The first temperature sensor 52 is fixed between the honeycomb carrier 51 and the sound-absorbing shell 41, and can monitor the temperature change of the air in real time. Thus, it can be used to determine what temperature the first electric heating wire 53 should be controlled at. The first electric heating wire 53 is used to heat the honeycomb carrier 51, and heat exchange occurs when the air passes through the honeycomb carrier 51, so as to adjust the temperature of the air in turn.

[0059] The honeycomb carrier 51 can not only achieve the uniformity of air flow, but also improve the heating efficiency. Due to its large surface area, the air can quickly absorb heat, thus achieving a relatively fast temperature rise. The honeycomb structure can make the air evenly distributed in each channel when passing through, avoiding local air flow disorder caused by uneven flow velocity in the air duct. This helps to maintain the stability of the air flow, thus effectively reducing the wind noise.

[0060] The implementation principle of the embodiment of this application is as follows: The motor 42 drives the centrifugal fan 44 to start, so that air can form a cycle in the laboratory box body 1 and the air supply box body 2. The air flowing back from the laboratory is first cooled by the cooling component 3, and then passes through the heat dissipation air duct 431 to dissipate heat and cool down the motor 42. In general high-precision laboratories, the air needs to be cooled first and then heated through multiple stages to accurately reach the temperature requirements of the laboratory. Therefore, the heat source of the motor 42 is just used to initially heat the air, and then the temperature is regulated again by the primary heating component 5. This not only solves the problem of heat dissipation of the motor 42, but also reasonably utilizes the heat generated during the operation of the motor 42 to pre-heat the air, improving the overall energy efficiency of the system. The sound-absorbing board 43 is directly arranged around the motor 42, which can also achieve a good sound insulation effect.

[0061] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A precision environmental control laboratory, characterized by: The invention comprises a laboratory box (1), wherein the laboratory box (1) is connected to an air outlet duct (16) and an air return duct (17), wherein the air outlet duct (16) and the air return duct (17) are connected to an air supply box (2), wherein a cooling component (3) and a primary heating component (5) are arranged in the air supply box (2), wherein a sound absorbing shell (41) is installed in the air supply box (2), wherein a motor (42) and a sound absorbing board (43) are arranged in the sound absorbing shell (41), wherein the sound absorbing board (43) is wrapped around the circumference of the motor (42), wherein the sound absorbing board (43) is provided with a plurality of heat dissipation ducts (431) along the length direction of the outer wall of the motor (42), wherein the heat dissipation ducts (431) penetrate the circumference of the motor (42), and wherein the motor (42) is connected to a centrifugal fan (44); After the air in the laboratory box (1) passes through the air outlet duct (16) and enters the air supply box (2), the air passes through the cooling component (3), the centrifugal fan (44), the heat dissipation duct (431), the primary heating component (5) and the return air duct (17) in sequence, and finally the air flows back into the laboratory box (1); The cooling assembly (3) comprises a spiral water pipe (31), a plurality of support frames (32) are installed in the air supply box (2), the plurality of support frames (32) are connected to the spiral water pipe (31), the spiral water pipe (31) is connected to a water inlet pipe (33) and a drain pipe (34), the water inlet pipe (33) is arranged adjacent to the return air duct (17), the drain pipe (34) is arranged away from the return air duct (17), and the water inlet pipe (33) and the drain pipe (34) both extend out of the air supply box (2); The centrifugal fan (44) is coaxially connected to a centrifugal pump (8), the drainage end of the spiral water pipe (31) is connected to the water inlet end of the centrifugal pump (8), and the drainage pipe (34) is connected to the water outlet end of the centrifugal pump (8); The primary heating component (5) comprises a honeycomb carrier (51) and a first temperature sensor (52); the air inlet end of the honeycomb carrier (51) is arranged adjacent to the air outlet end of the sound absorbing shell (41); the first temperature sensor (52) is fixed in the air supply box (2); and the first temperature sensor (52) is located between the honeycomb carrier (51) and the sound absorbing shell (41); and a first electric heating wire (53) is arranged on the honeycomb carrier (51).

2. The precision environment control laboratory according to claim 1, characterized in that: The top of the laboratory box (1) is provided with an air outlet (11), the bottoms of both sides of the laboratory box (1) are provided with air return ports (13), both sides of the laboratory box (1) are provided with a first air duct (14) and a second air duct (15), and the first air duct (14) is located above the second air duct (15); The air outlet duct (16), the air return duct (17) and the air supply box (2) are each provided with two, the first air duct (14) is connected to the air outlet (11) and the air outlet duct (16), and the second air duct (15) is connected to the air return outlet (13) and the return air duct (17).

3. The precision environment control laboratory according to claim 1, characterized in that: Sound absorbing blocks (6) are provided at both the air outlet and the air return of the air supply box (2); the sound absorbing block (6) is provided with an air guide channel (61); the air guide channel (61) is a multi-bend channel; air is discharged from the sound absorbing block (6) through the air guide channel (61).

4. The precision environment control laboratory according to claim 1, characterized in that: The centrifugal pump (8) comprises a water guide seat (81), the water guide seat (81) is provided with an annular water channel (811), a water inlet channel (812) and a drainage channel (813), the water inlet channel (812) and the drainage channel (813) are both connected to the annular water channel (811), and a partition plate (82) is provided in the water guide seat (81), and the partition plate (82) is arranged in the annular water channel (811) to separate the water inlet channel (812) and the drainage channel (813); The water guide seat (81) is rotatably connected to a rotating disk (85), the rotating disk (85) is provided with an eccentric protruding disk (86), the eccentric protruding disk (86) is installed with an eccentric ring buckle (87), both ends of the eccentric ring buckle (87) are provided with soft pads (88), the soft pads (88) are in contact with the partition (82), and the eccentric ring buckle (87) cooperates with the inner wall of the annular water channel (811) when moving, so that the fluid in the annular water channel (811) is squeezed and discharged from the drainage channel (813).

5. The precision environment control laboratory according to claim 3, characterized in that: The sound absorbing block (6) at the air outlet of the air supply box (2) is equipped with a second electric heating wire (62), a second temperature sensor (63) is arranged between the sound absorbing block (6) and the primary heating component (5), and the second temperature sensor (63) is fixed in the air supply box (2).

6. The precision environment control laboratory according to claim 2, characterized in that: The air outlet (11) of the laboratory box (1) is installed with a filter screen (12), and the air supply box (2) is installed with a control cabinet (7).

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