阅读说明：本技术 实验室空气调节系统及其控制方法 (Laboratory air conditioning system and control method thereof ) 是由 李宏波 韦韬 吴尚晏 黎晓珊 李奇 于 2020-12-24 设计创作，主要内容包括：本发明提供一种实验室空气调节系统及其控制方法,其中的实验室空气调节系统,包括组合式空调柜,所述组合式空调柜通过进风管道以及送风管道与实验室室内连通,所述送风管道的气流流动路径上设有第一过滤件以及第一风阀,所述第一风阀的开度能够根据实验室洁净度等级被调整。根据本发明,实验室的空气洁净度能够满足不同的实验室洁净度等级对悬浮颗粒数的不同要求,进而实现所述实验室空气调节系统在不同的实验室洁净度等级之间的自由切换。(The invention provides a laboratory air conditioning system and a control method thereof, wherein the laboratory air conditioning system comprises a combined air conditioning cabinet, the combined air conditioning cabinet is communicated with the inside of a laboratory through an air inlet pipeline and an air supply pipeline, a first filtering piece and a first air valve are arranged on an airflow flow path of the air supply pipeline, and the opening degree of the first air valve can be adjusted according to the cleanliness grade of the laboratory. According to the invention, the air cleanliness of the laboratory can meet different requirements of different laboratory cleanliness levels on the number of suspended particles, and further, the laboratory air conditioning system can be freely switched among different laboratory cleanliness levels.)

1. The utility model provides a laboratory air conditioning system, its characterized in that includes combined type air conditioner cabinet (1), combined type air conditioner cabinet (1) is through intake stack (11) and supply-air duct (12) and the indoor intercommunication of laboratory, be equipped with first filter (13) and first blast gate (14) on the air current flow path of supply-air duct (12), the aperture of first blast gate (14) can be adjusted according to laboratory cleanliness factor grade.

2. Laboratory air conditioning system according to claim 1, characterized in that the modular air conditioning cabinet (1) further has a fresh air intake duct (15), the fresh air intake duct (15) being upstream of the air flow of the supply duct (12) and downstream of the air flow of the intake duct (11), the first filter element (13) being located between the air flow outlet of the fresh air intake duct (15) and the air flow inlet of the supply duct (12).

3. Laboratory air-conditioning system according to claim 1, characterized in that the modular air-conditioning cabinet (1) is also in selective communication with the outside environment through an exhaust duct (16), a second air valve (17) is arranged in the exhaust duct (16), and the opening degree of the second air valve (17) can be adjusted according to the laboratory pressure difference requirement.

4. Laboratory air-conditioning system according to claim 1, characterized in that the air outlet of the supply air duct (12) is also provided with a second filter element (18).

5. Laboratory air conditioning system according to claim 4, characterized in that the first filter element (13) comprises a coarse filter element and/or a medium filter element; and/or the second filter element (18) comprises a sub-high efficiency filter, and/or a high efficiency filter.

6. A control method of a laboratory air-conditioning system, characterized by controlling the laboratory air-conditioning system of any one of claims 1 to 5, comprising the steps of:

acquiring a laboratory cleanliness grade instruction and acquiring the real-time particle number of suspended particles with target particle size in air in a laboratory;

comparing the size relationship between the real-time particle number of the suspended particles with the target particle size and the preset particle number of the suspended particles with the target particle size, wherein the preset particle number of the suspended particles with the target particle size is matched with the acquired laboratory cleanliness grade instruction;

and controlling and adjusting the opening degree of the first air valve (14) according to the size relation.

7. The control method according to claim 6, wherein adjusting the opening degree of the first damper (14) according to the magnitude relation control includes:

when the real-time particle number of the suspended particles with the target particle size is larger than the preset particle number of the suspended particles with the target particle size, controlling to increase the opening degree of the first air valve (14); and/or the presence of a gas in the gas,

and when the real-time particle number of the suspended particles with the target particle size is not larger than the preset particle number of the suspended particles with the target particle size, controlling and maintaining the opening of the first air valve (14) unchanged.

8. The control method according to claim 6, wherein obtaining the laboratory cleanliness class instruction further comprises obtaining a laboratory cleanliness current class;

when the cleanliness grade of the obtained laboratory cleanliness grade instruction is higher than the current grade of the laboratory cleanliness, controlling to increase the opening degree of the first air valve (14); and/or the presence of a gas in the gas,

and when the cleanliness grade of the acquired laboratory cleanliness grade instruction is not higher than the current grade of the laboratory cleanliness, controlling and maintaining the opening of the first air valve (14) unchanged.

9. The control method according to claim 6, when the laboratory air conditioning system includes a second damper (17), further comprising:

acquiring real-time pressure difference and pressure difference modes inside and outside a laboratory;

comparing the relation between the real-time pressure difference inside and outside the laboratory and the preset pressure difference inside and outside the laboratory, wherein the preset pressure difference inside and outside the laboratory is matched with the acquired laboratory cleanliness grade instruction;

and controlling and adjusting the opening degree of the second air valve (17) according to the size relation and the pressure difference mode.

10. The control method according to claim 9, wherein adjusting the opening degree of the second damper (17) according to the magnitude relation control includes:

the pressure difference mode comprises a positive pressure mode and a negative pressure mode;

when the real-time pressure difference between the inside and the outside of the laboratory is greater than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a positive pressure mode, the opening degree of the second air valve (17) is controlled to be increased; and/or the presence of a gas in the gas,

when the real-time pressure difference between the inside and the outside of the laboratory is greater than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a negative pressure mode, the opening degree of the second air valve (17) is controlled to be increased; and/or the presence of a gas in the gas,

when the real-time pressure difference between the inside and the outside of the laboratory is smaller than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a positive pressure mode, controlling and reducing the opening degree of the second air valve (17); and/or the presence of a gas in the gas,

and when the real-time pressure difference between the inside and the outside of the laboratory is smaller than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a negative pressure mode, controlling and reducing the opening degree of the second air valve (17).

Technical Field

The invention belongs to the technical field of laboratory purification, and particularly relates to a laboratory air conditioning system and a control method thereof.

Background

The ventilation times of the laboratory with the cleanliness grade of one hundred thousand are regulated to 10-15 times, the ventilation times of the laboratory with the cleanliness grade of ten thousand are regulated to 15-25 times, and the number of suspended particles in unit volume of the two clean grades of the laboratory is shown in the following table.

The number of suspended particles in a unit cubic meter space is an important index for measuring the cleanliness grade of a laboratory, the traditional laboratory is designed according to the cleanliness of a certain specific grade, the air output in the laboratory is constant, and the number of the suspended particles in the air is also fixed within the standard range required by the cleanliness grade. Under this design theory, the traditional laboratory can not carry out laboratory cleanliness factor grade adjustment to match and satisfy the actual demands of different experiments on different grades of cleanliness factors.

Disclosure of Invention

Therefore, the invention provides a laboratory air conditioning system and a control method thereof, which overcome the defect that the air conditioning system in the prior art cannot switch between different laboratory cleanliness grades to meet different requirements of laboratories on the number of suspended particles in different laboratory cleanliness grades.

In order to solve the above problems, the present invention provides a laboratory air conditioning system, which includes a combined air conditioning cabinet, wherein the combined air conditioning cabinet is communicated with a laboratory through an air inlet duct and an air supply duct, a first filter and a first air valve are disposed on an airflow flow path of the air supply duct, and an opening degree of the first air valve can be adjusted according to a laboratory cleanliness class.

Preferably, the combined air-conditioning cabinet is further provided with a fresh air inlet pipeline, the fresh air inlet pipeline is positioned at the upstream of the air flow of the air supply pipeline and at the downstream of the air flow of the air inlet pipeline, and the first filter piece is positioned between the air flow outlet of the fresh air inlet pipeline and the air flow inlet of the air supply pipeline.

Preferably, the combined air conditioner cabinet is also communicated with the external environment selectively through an exhaust pipeline, a second air valve is arranged in the exhaust pipeline, and the opening degree of the second air valve can be adjusted according to the requirement of the laboratory pressure difference.

Preferably, a second filter element is further arranged at the airflow outlet of the air supply pipeline.

Preferably, the first filter element comprises a coarse filter, and/or a medium filter; and/or, the second filter element comprises a sub-high efficiency filter, and/or, a high efficiency filter.

The invention also provides a control method of the laboratory air conditioning system, which is used for controlling the laboratory air conditioning system and comprises the following steps:

acquiring a laboratory cleanliness grade instruction and acquiring the real-time particle number of suspended particles with target particle size in air in a laboratory;

comparing the size relationship between the real-time particle number of the suspended particles with the target particle size and the preset particle number of the suspended particles with the target particle size, wherein the preset particle number of the suspended particles with the target particle size is matched with the acquired laboratory cleanliness grade instruction;

and controlling and adjusting the opening of the first air valve according to the size relation.

Preferably, the controlling and adjusting the opening degree of the first air valve according to the magnitude relation includes:

when the real-time particle number of the suspended particles with the target particle size is larger than the preset particle number of the suspended particles with the target particle size, controlling to increase the opening degree of the first air valve; and/or the presence of a gas in the gas,

and when the real-time particle number of the suspended particles with the target particle size is not larger than the preset particle number of the suspended particles with the target particle size, controlling and maintaining the opening of the first air valve unchanged.

Preferably, the step of obtaining the command of the laboratory cleanliness grade also comprises the step of obtaining the current grade of the laboratory cleanliness;

when the cleanliness grade of the obtained laboratory cleanliness grade instruction is higher than the current grade of the laboratory cleanliness, controlling to increase the opening degree of the first air valve; and/or the presence of a gas in the gas,

and when the cleanliness grade of the acquired laboratory cleanliness grade instruction is not higher than the current grade of the laboratory cleanliness, controlling and maintaining the opening of the first air valve unchanged.

Preferably, when the laboratory air conditioning system includes a second air damper, further comprising:

acquiring real-time pressure difference and pressure difference modes inside and outside a laboratory;

comparing the relation between the real-time pressure difference inside and outside the laboratory and the preset pressure difference inside and outside the laboratory, wherein the preset pressure difference inside and outside the laboratory is matched with the acquired laboratory cleanliness grade instruction;

and controlling and adjusting the opening degree of the second air valve according to the size relation and the pressure difference mode.

Preferably, the controlling and adjusting the opening degree of the second air valve according to the magnitude relation includes:

the pressure difference mode comprises a positive pressure mode and a negative pressure mode;

when the real-time pressure difference between the inside and the outside of the laboratory is greater than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a positive pressure mode, controlling and increasing the opening degree of the second air valve; and/or the presence of a gas in the gas,

when the real-time pressure difference between the inside and the outside of the laboratory is greater than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a negative pressure mode, controlling and increasing the opening degree of the second air valve; and/or the presence of a gas in the gas,

when the real-time pressure difference between the inside and the outside of the laboratory is smaller than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a positive pressure mode, controlling to reduce the opening degree of the second air valve; and/or the presence of a gas in the gas,

and when the real-time pressure difference between the inside and the outside of the laboratory is smaller than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a negative pressure mode, controlling to reduce the opening degree of the second air valve.

According to the laboratory air conditioning system and the control method thereof, the opening degree of the first air valve arranged in the air supply pipeline can be adjusted according to the cleanliness grade of the laboratory, so that the air cleanliness of the laboratory can meet different requirements of different laboratory cleanliness grades on the number of suspended particles, and the laboratory air conditioning system can be freely switched among different laboratory cleanliness grades.

Drawings

Fig. 1 is a schematic structural diagram of a laboratory air conditioning system according to an embodiment of the present invention.

The reference numerals are represented as:

1. a combined air-conditioning cabinet; 11. an air inlet pipeline; 12. an air supply duct; 13. a first filter member; 14. a first air valve; 15. a fresh air inlet pipeline; 16. an exhaust duct; 17. a second air valve; 18. a second filter member; 100. a laboratory; 101. an indoor pressure sensor; 102. an outdoor pressure sensor; 103. a suspended particle counter.

Detailed Description

Referring to fig. 1, according to an embodiment of the present invention, a laboratory air conditioning system is provided, which includes a combined air conditioner cabinet 1, the combined air conditioner cabinet 1 communicates with a laboratory through an air inlet duct 11 and an air supply duct 12, a first filter 13 and a first air valve 14 are disposed on an airflow path of the air supply duct 12, and an opening degree of the first air valve 14 can be adjusted according to a laboratory cleanliness class, and it can be understood that the combined air conditioner cabinet 1 may further have a temperature adjusting section for adjusting air temperature and a dehumidifying section for adjusting air humidity. In this technical scheme, the aperture of the first air valve 14 that is equipped with in the supply-air duct 12 can be adjusted according to laboratory cleanliness class to the air cleanliness of messenger's laboratory can satisfy the different requirements of different laboratory cleanliness classes to the suspended particles number, and then realizes laboratory air conditioning system freely switches between the laboratory cleanliness class of difference.

In some embodiments, the modular air conditioning cabinet 1 further has a fresh air inlet duct 15, the fresh air inlet duct 15 is located upstream of the air flow of the air supply duct 12 and downstream of the air inlet duct 11, the first filter element 13 is located between an air flow outlet of the fresh air inlet duct 15 and an air flow inlet of the air supply duct 12, the fresh air inlet duct 15 can introduce external fresh air into the air supply duct 12 and enter the laboratory 100 to improve the air quality in the laboratory 100, and the first filter element 13 is located downstream of the fresh air inlet duct 15 to ensure the quality of the introduced fresh air.

Further, combined air conditioner cabinet 1 passes through exhaust duct 16 and external environment selective intercommunication, be equipped with second blast gate 17 in the exhaust duct 16, the aperture of second blast gate 17 can be adjusted according to laboratory pressure difference requirement, thereby can control the aperture size of second blast gate 17 satisfies laboratory 100 inside with the outside pressure difference demand of laboratory 100.

In some embodiments, a second filter element 18 is provided at the air flow outlet of the supply air duct 12 to further filter the supply air flow passing through the first filter element 13 to improve the quality level of the supply air flow. I.e., the second filter member 18 has a higher filtration rating than the first filter member 13, and in particular, the first filter member 13 comprises a coarse filter, and/or a medium filter; and/or the second filter element 18 comprises a sub-high efficiency filter, and/or a high efficiency filter.

In order to realize automatic control of the laboratory air conditioning system, a suspended particle counter 103 capable of detecting the number of particles of suspended particles with a target particle size in indoor air in real time, and an indoor pressure sensor 101 and an outdoor pressure sensor 102 respectively disposed inside and outside the laboratory 100 are disposed in the laboratory 100. The target particle size is, for example, 0.5. mu.m, 1 μm, 5 μm, or the like as described above.

According to an embodiment of the present invention, there is also provided a control method of a laboratory air conditioning system, for controlling the laboratory air conditioning system, including the steps of:

acquiring a laboratory cleanliness grade instruction and acquiring the real-time particle number of suspended particles with target particle size in laboratory air through the suspended particle counter 103;

comparing the size relationship between the real-time particle number of the suspended particles with the target particle size and the preset particle number of the suspended particles with the target particle size, wherein the preset particle number of the suspended particles with the target particle size is matched with an acquired laboratory cleanliness class instruction, and specifically, for example, when the target particle size in the ten-thousand cleanliness class is 0.5 μm, the upper limit of the number of the suspended particles per cubic meter of the corresponding preset particle number is 352000, when the target particle size is 1 μm, the upper limit of the number of the suspended particles per cubic meter of the corresponding preset particle size is 83200, and when the target particle size is 5 μm, the upper limit of the number of the suspended particles per cubic meter of the corresponding preset particle size is 2930; when the target particle size in the hundred thousand grade cleanliness class is 0.5 mu m, the upper limit of the number of the corresponding preset particles per cubic meter of space suspended particles is 3520000, when the target particle size is 1 mu m, the upper limit of the number of the corresponding preset particles per cubic meter of space suspended particles is 832000, and when the target particle size is 5 mu m, the upper limit of the number of the corresponding preset particles per cubic meter of space suspended particles is 29300;

and controlling and adjusting the opening degree of the first air valve 14 according to the size relation.

Controlling and adjusting the opening degree of the first air valve 14 according to the size relationship specifically includes: when the real-time particle number of the suspended particles with the target particle size is larger than the preset particle number of the suspended particles with the target particle size, controlling to increase the opening degree of the first air valve 14; and/or controlling to maintain the opening of the first air valve 14 unchanged when the real-time particle number of the suspended particles with the target particle size is not greater than the preset particle number of the suspended particles with the target particle size.

Further, the method also comprises the steps of obtaining the current grade of the laboratory cleanliness at the same time of obtaining the laboratory cleanliness grade instruction; when the cleanliness grade of the obtained laboratory cleanliness grade instruction is higher than the current grade of the laboratory cleanliness, controlling to increase the opening degree of the first air valve 14; and/or controlling to maintain the opening of the first air valve 14 unchanged when the cleanliness grade of the acquired laboratory cleanliness grade instruction is not higher than the current grade of the laboratory cleanliness.

When the laboratory air-conditioning system comprises the second air damper 17, the control method further comprises:

real-time indoor and outdoor pressure difference is obtained through the indoor pressure sensor 101 and the outdoor pressure sensor 102, and a pressure difference mode is synchronously obtained; comparing the relation between the real-time pressure difference inside and outside the laboratory and the preset pressure difference inside and outside the laboratory, wherein the preset pressure difference inside and outside the laboratory is matched with the acquired laboratory cleanliness grade instruction; and controlling and adjusting the opening degree of the second air valve 17 according to the size relation and the pressure difference mode. Specifically, the controlling and adjusting the opening degree of the second air valve 17 according to the magnitude relation includes: the pressure difference mode comprises a positive pressure mode and a negative pressure mode, wherein the positive pressure mode refers to a mode that the pressure inside the laboratory is higher than the pressure outside the laboratory, and the negative pressure mode refers to a mode that the pressure inside the laboratory is lower than the pressure outside the laboratory; when the real-time pressure difference between the inside and the outside of the laboratory is greater than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is the positive pressure mode, controlling to increase the opening degree of the second air valve 17; and/or when the real-time pressure difference between the inside and the outside of the laboratory is greater than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is a negative pressure mode, controlling to increase the opening degree of the second air valve 17; and/or when the real-time pressure difference between the inside and the outside of the laboratory is smaller than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is the positive pressure mode, controlling to reduce the opening degree of the second air valve 17; and/or when the real-time pressure difference between the inside and the outside of the laboratory is smaller than the preset pressure difference between the inside and the outside of the laboratory and the pressure difference mode is the negative pressure mode, controlling to reduce the opening degree of the second air valve 17. It should be noted that, in order to ensure the stability of the detection of the indoor particulate matter, the rotation speed of the intake air fan in the corresponding combined air conditioning cabinet 1 should be kept unchanged (i.e. the intake air volume is kept unchanged, and the positive pressure and negative pressure modes are realized only by the exhaust air volume) in the process of controlling the opening of the second air valve 17 to increase or decrease.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.