CN112032993A - Turbulent-flow type rotary lower air supply system - Google Patents
Turbulent-flow type rotary lower air supply system Download PDFInfo
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- CN112032993A CN112032993A CN201910478482.4A CN201910478482A CN112032993A CN 112032993 A CN112032993 A CN 112032993A CN 201910478482 A CN201910478482 A CN 201910478482A CN 112032993 A CN112032993 A CN 112032993A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/755—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for cyclical variation of air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
Abstract
The invention provides a turbulent type rotary lower air supply system, which comprises a ventilation floor device, a data acquisition device, a signal transmission device, an air pressure balance plate and an upper computer control device, wherein the ventilation floor device is connected with the data acquisition device through a pipeline; the ventilation floor device is used for supplying air to the indoor and conveying downward air flow to the indoor in a turbulent type rotation mode, and comprises a floor main body and an air flow guide vane plate, wherein the floor main body and the ground form a frame structure, and at least one ventilation plate is arranged on the floor main body; the data acquisition device is used for acquiring parameters of the lower air supply airflow and transmitting the acquired data to the signal transmission device, and the signal transmission device transmits the converted digital signals to the upper computer control device; and the upper computer control device carries out system regulation and control on the lower air supply air conditioner. The turbulent-flow-type rotary lower air supply system can meet the heat dissipation requirement of IT equipment in the existing machine room, so that the surface temperature of each IT equipment cabinet in the machine room can be kept basically constant, and meanwhile, the air conditioning system of the machine room can greatly save energy.
Description
Technical Field
The invention relates to the technical field of indoor temperature control, in particular to a turbulent type rotary lower air supply system of a data center machine room.
Background
Common air supply modes of the air conditioner are divided into three types: side air supply, upper air supply and lower air supply. The same points of the three air supply modes are as follows: the cold and heat sources and the air handling equipment are substantially identical. The difference lies in that: 1) the side air supply and the upper air supply enter a working area after passing through a certain range during air supply; the lower air supply is that the air supply II from the floor or the lower space directly enters the working area; 2) the air supply temperature of the lower air supply during cold supply is more effective than that of the side air supply and the upper air supply, so that the energy is saved; 3) the upper air supply and the side air supply are not convenient to change the position of the air port according to needs once the system is installed, and the lower air supply is convenient for refitting the building and renovating and transforming the existing building.
The traditional air supply mode of the air conditioner is mainly an upper air supply mode, air is sent out from an air supply outlet at the upper part of a room, indoor air circulation is driven by jet flow motion, all residual heat and residual moisture in the room are absorbed and diluted, and the residual heat and the residual moisture are fully mixed and then discharged to the outside, so that the indoor temperature is basically consistent from top to bottom, the fresh air quantity is small, and the quality of the indoor air in the room with pollutants is poor. In order to improve indoor air quality, reduce building energy consumption, and control local hot and humid environment in large space, lower air supply mode is more and more concerned. The lower air supply mode is that air is upwards sent out from an air supply outlet arranged at the lower part of a room, fresh air firstly passes through a working area, is mixed with indoor air through induction action, absorbs heat and humidity load of the working area, enters a non-working area, is strengthened by means of heat convection action of personnel and equipment, and is discharged from the top, so that the concentration and the temperature of pollutants discharged air are higher than those of the working area, a better air environment can be created, and energy consumption is effectively reduced.
The common air supply mode under the air conditioning system of the data center machine room is floor air supply, an air supply outlet of the air conditioning system is generally arranged in parallel with the ground, the ground needs to be overhead, the lower space is used as an air pipe or directly used as an air supply static pressure box, and air supply enters the room through the floor air supply outlet and is discharged from an air outlet of IT equipment in the room after being subjected to heat-mass exchange with the room.
At present, the lower air supply system is applied to several buildings such as computer rooms, movie theaters, stadiums and the like.
The air conditioner load in the modern data center machine room mainly comes from the heat productivity of IT equipment and external auxiliary equipment, and approximately accounts for 80-97% of the total load of the air conditioner in the machine room; in the main equipment such as servers, storage and networks, the share of the servers accounts for about 80% of the total heat dissipation capacity of the equipment, so as to increase the integration density of the servers, the equipment cabinet in the server equipment area becomes a main heat load area in the equipment room.
From the viewpoint of the computer room infrastructure, when the height of the cabinet or the rack is more than 1.8m, the equipment heat density is large and the equipment heat productivity is large, the electronic information system computer room is suitable to adopt a down-blowing air-conditioning fan system, namely, the space at the lower part of the anti-static movable floor in the computer room is used as a down-blowing static pressure box of the computer room air-conditioning system, and then cold air is conveyed to the heat loads such as the cabinet and the equipment through the ventilation floor.
When the air supply airflow of the air supply air conditioner cooling system is designed for a machine room at present, the opening area of a ventilation floor is calculated according to 30-40% of the air supply quantity of an air conditioning unit by referring to the factors such as equipment type, heat productivity, the temperature difference between the front and the back of a machine cabinet, the height of the floor and the effective sectional area under the floor, and the air supply opening reaches the air quantity required for cooling the machine cabinet, so that the air supply opening on a ventilation plate can continuously blow out cold air fluid with a certain air speed, and the machine cabinet in the machine room can be ensured to be uniformly and continuously cooled.
According to the air flow characteristic stated by the fluid mechanics Bernoulli principle, the air flow characteristic is that the pressure with large wind speed is small, and the air flow close to the ventilation floor of the lower air supply air conditioner is small due to the large pressure at the air outlet of the lower air supply air conditioner in the machine room as shown in figure 1, and the air flow close to the ventilation floor of the lower air supply air conditioner is a certain air flow, so that the air flow far away from the ventilation floor of the lower air supply air conditioner is reduced, and the air flow at the tail end of the floor is increased due to the characteristic of the Bernoulli principle that the pressure with small wind speed is large, so that the air flow conveyed by the ventilation floor in the area is increased; and because the electronic equipment cabinet in the existing machine room is usually arranged close to the air conditioner in the machine room, the air conditioner can influence the air output of part of the ventilation floor, so that the air output of the ventilation floor is reduced.
In addition, most of the existing room-type air conditioners for supplying air below the machine room are arranged around the machine room, and because of the limitation of the Bernoulli principle of air flow, the air pressure of the air supplied above the floor with large air flow velocity below the floor can be increased only by small air flow velocity, and finally the air leakage rate of the cold air of the machine room for supplying air below the floor is mostly over 50%, as shown in FIG. 2, the mixed flow of the cold air and the hot air occurs, so that the cold air of the air conditioner can not be directly and effectively conveyed to the IT cabinet; the cooling effect of the machine room air conditioner is poor, so that the actual machine room air conditioning system is in over-distribution and operates with high energy consumption.
To sum up, the air conditioning output of the ventilation floor air supply device in the prior art is leaked by more than 50%, thereby the heat dissipation requirement of increasing load of the machine cabinet can not be met, because the host computer equipment and the external auxiliary equipment are in the operation process, the heat productivity can change at any time, the air flow blown out by the air conditioning air supply device through the air supply opening under the ventilation plate keeps laminar air supply, when the cooling requirement of the heat productivity of the existing equipment can not be met, the surface temperature of the machine cabinet of the equipment can be changed along with the fluctuation, the uneven temperature of the machine cabinet occurs, some machine cabinets cause local overheating of the machine room, and further unnecessary overcooling is caused, the air conditioning of the machine room is in over-distribution and over-loaded operation, the refrigeration energy consumption.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a turbulent type rotary lower air supply system which can meet the heat dissipation requirement of IT equipment in the existing machine room, so that the surface temperature of each IT equipment cabinet in the machine room can be kept basically constant, and meanwhile, an air conditioning system of the machine room can greatly save energy.
The technical scheme of the invention is as follows: a turbulent flow type rotary lower air supply system comprises a ventilation floor device, a data acquisition device, a signal transmission device and an upper computer control device;
the ventilating floor device is used for supplying air to a room of a data center machine room and conveying downward air flow into the room in a turbulent type rotating mode and comprises a floor main body and an air flow guiding blade plate, wherein the floor main body and the ground form a frame structure, at least one ventilating plate is arranged on the floor main body, and the ventilating plate enables the lower portion of the floor main body to be communicated with the air above the floor main body;
the data acquisition device is used for acquiring parameters of the lower air supply airflow and transmitting the acquired data to the signal transmission device;
the signal transmission device is used for receiving the data acquired by the data acquisition device, converting the data and then transmitting the data to the upper computer control device;
and the upper computer control device regulates and controls the lower air supply system according to the received signal.
Preferably, the airflow guide vanes are arranged in at least two groups and are arranged in parallel, the downward air supply airflow and the horizontal plane form an angle of 25-90 degrees, and the ratio of the spacing distance between every two adjacent airflow guide vanes to the height of the airflow guide vanes is 5: 6-5: 3.
Preferably, the interval between the airflow guiding vanes arranged in the middle of the ventilation board is smaller than the interval between the airflow guiding vanes arranged on both sides of the ventilation board.
Preferably, the airflow guide vane plate comprises a plate part and a wing part, the wing part is in a micro-arc shape, an angle of 120-150 degrees is formed between the plate part and the wing part, the concave surface of the angle faces downwards to supply airflow, and the height ratio of the wing part to the plate part is 12: 1-3: 1.
Preferably, the air conditioner further comprises a wind pressure balance plate, wherein the wind pressure balance plate is arranged below the floor main body and used for adjusting the lower air supply airflow organization.
Preferably, its characterized in that, data acquisition device sets up inside ventilation floor device's the frame construction, it includes infrared temperature measuring device, air supply wind pressure measuring device and communication device, infrared temperature measuring device is used for measuring the surface infrared temperature of the equipment in the air supply region that ventilation floor device carried, air supply temperature measuring device is used for measuring the air-out temperature on indoor ventilation floor device's floor main part surface, and air supply wind pressure measuring device is used for measuring real-time pressure differential between under with the floor main part on ventilation floor device's the floor main part, analog quantity parameters such as infrared temperature, air supply wind pressure that signal transmission device will gather convert data parameter signal and upload to host computer controlling means.
Preferably, the upper computer control device regulates and controls the machine room air conditioning system in real time according to the detected parameter requirements such as infrared temperature, air supply pressure and the like, and determines the set temperature and the set air speed of the air conditioner group by taking the obtained infrared temperature as the air supply temperature of the corresponding cold channel IT cabinet; determining the set temperature of the air conditioner group through the obtained air supply temperature; determining the set wind speed of the air conditioning unit according to the obtained wind pressure; and the wind speed of the non-fault air conditioner is increased according to the collected high-temperature alarm or the fault alarm of the air conditioner.
Preferably, the infrared temperature and air supply temperature measuring device is installed at the air outlet of the ventilation floor device, and the air supply pressure measuring device is installed at the air outlet of the ventilation floor device.
Preferably, the infrared temperature measuring device is an infrared thermometer and is provided with a photosensitive probe, and the photosensitive probe is inserted between the airflow guide vanes.
Preferably, the air supply pressure measuring device is a micro differential pressure sensor and is arranged on the airflow guide vane plate, and two detection pins of the micro differential pressure sensor are respectively used for measuring the air pressure on the floor main body and under the floor main body of the ventilation floor device to obtain the pressure difference between the two.
The invention has the following beneficial effects:
according to the turbulent type rotary lower air supply system provided by the invention, through the arrangement of the turbulent type rotary air supply ventilation floor device and the lower air pressure balance plate of the floor main body, the air supply quantity blown out by the lower air supply system ventilation floor device can be reduced by 10% compared with the standard air supply quantity, and under the condition of improving the air supply temperature, the purposes of keeping the surface of an equipment cabinet at a basically constant temperature and keeping the air pressure of air flow sucked by the equipment cabinet at a constant standard air pressure and meeting the ideal starting-up operation environment requirement of equipment are achieved. In addition, the turbulent type ventilation floor device is not provided with a cold air restraining structure body for physically sealing the cold channel, eliminates the fire hazard problem of a machine room, and is suitable for cold channels with various sizes and forms. The infrared temperature of the surface of the equipment, the air supply temperature and the air supply pressure of the ventilation floor device are monitored in real time, the lower air supply system can output the cold airflow quantity required in the machine room under the regulation of the upper computer control system, and the purpose of regulating the infrared temperature of the surface of the equipment cabinet is achieved, so that the lower air supply system can continuously output proper amount of cold air with proper standard air supply pressure in due time, and the air conditioning system of the machine room can greatly save energy.
Drawings
FIG. 1 is a schematic diagram of wind pressure distribution in a lower air supply system room in the prior art;
FIG. 2 is a schematic view of the air flow organization of a machine room of a lower air supply system in the prior art;
FIG. 3 is a schematic front view of the turbulent rotating downdraft air supply system of the present invention;
FIG. 4 is a schematic side view of the turbulent rotating downdraft system of the present invention;
FIG. 5 is a schematic rear view of the turbulent rotating downdraft system of the present invention;
FIG. 6 is a schematic structural view of an airflow guiding vane of the turbulent rotating downdraft air supply system of the present invention;
FIG. 7a is a schematic structural view of a wind pressure balance plate apparatus of the turbulent rotating downdraft air supply system of the present invention;
FIG. 7b (schematic view of turbulent type rotary downdraft air supply system with wind pressure balance plate installed in machine room
FIG. 8 is a system frame diagram of an upper computer platform of the turbulent rotating lower air delivery system of the present invention;
FIG. 9 is a schematic view of a comparative test of the air supply effect of the turbulent rotary under-air supply system of the present invention and the existing under-air supply floor;
FIG. 10 is a schematic view of a comparison test of the air supply level of the turbulent rotary under-feed system of the present invention with the existing under-feed floor;
FIG. 11a is a schematic view of a conventional underfloor air conditioning unit;
FIG. 11b is a schematic view of an air conditioning unit of the turbulent rotating downdraft system of the present invention.
Wherein: 1-a floor main body; 101-a frame structure; 2-a wind pressure balance plate; 201-fixing holes; 3-airflow guiding blade plate; 301-plate portion; 302-a wing; 4-a ventilation board; 401-macropore; 402-a pinhole; 5-the ground; 6-signal transmission means; 7-data acquisition device.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Examples of the invention
The embodiment provides a turbulent-flow type rotary downdraft system, which is shown in fig. 3 to 7 and comprises a ventilation floor device, a data acquisition device and a signal transmission device; the ventilation floor device is used for supplying air to the indoor and conveying the lower air flow to the indoor in a turbulent type rotation manner, and comprises a floor main body 1, a wind pressure balance plate 2, an air flow guide vane plate 3 and an air outlet, wherein the floor main body 1 and the ground form a frame structure 101, and at least one ventilation plate 4 is arranged on the floor main body 1; the data acquisition device is used for acquiring parameters of the lower air supply airflow and transmitting the acquired data to the upper computer control device through digital signals; and the upper computer control device is used for receiving the data acquired by the data acquisition device and regulating and controlling the air supply air conditioning system under the machine room. The turbulent-flow-type rotary lower air supply system is arranged in the machine room, so that lower air supply airflow generates a turbulent-flow rotary air supply effect. Fig. 9-11 show schematic diagrams of simulation tests of the air supply effect of the turbulent-type rotary lower air supply system based on the lower air supply system in the prior art. The air guiding blade 3 guides the cold air under the raised floor of the machine room to the floor, and the generated turbulent rotating cold air is slowly and rotatably conveyed to the equipment cabinet of the machine room. The air supply mode of turbulent rotation realizes higher layering and turbulent airflow, and is more energy-saving. Under the combination of static pressure balance and turbulent airflow, the hot layer is cut off, and directional cold air is provided to be further conveyed to the surface of the equipment frame, and the surface of a server in the data center machine room is directly influenced. As can be seen from fig. 9 and 10, in the same air conditioning setting and energy consumption, the air supply amount of turbulent rotating lower air supply a of the present embodiment can reach 65%, while the air supply amount of conventional lower air supply system air supply B is only 25%, and the present embodiment can generate good vertical momentum even at a height of 2.13 m from the top of the floor, and achieve a higher hot and cold airflow stratification level.
Referring to fig. 4, each block of the floor main body 1 is supported on the ground by floor support legs, which are arranged as shown in the figure, taking the floor main body with 1 ventilating board 4 as an example, 4 floor support legs are respectively connected with and support four corners of the ventilating board 4, and form a frame structure 101 with the ground. Taking the floor main body with a ventilation board and a sealing board as an example, 6 floor support legs are needed, wherein 2 floor support legs simultaneously support two corners of the adjacent sides of the ventilation board and the sealing board. In this embodiment, the distance from the ground to the upper surface of the floor main body is H1The height of the air guide vane plate 3, i.e., the distance from the end thereof to the upper surface of the floor main body (the thickness of the ventilation plate is negligible) is H2,H1Greater than or equal to 2H2. A sufficient lower air flow passage is left in the floor frame 101.
More than two groups of airflow guide vanes 3 are arranged in the frame structure in parallel and connected to the lower plane of the ventilating board, and the air outlet of downward air supply airflow forms an angle of 25-90 degrees, preferably an angle of 50-90 degrees, and further preferably an angle of 75-90 degrees with the horizontal plane. The ratio of the spacing distance between every two adjacent airflow guide vanes to the height of the airflow guide vanes is 5: 6-5: 3.
Further, the airflow guiding vanes 3 are arranged with a distance between the middle of the ventilating board 4 smaller than a distance between the two sides of the ventilating board.
As shown in fig. 4 and 5, in the present embodiment, the airflow guiding vane plate 3 forms an angle of 90 ° with the horizontal plane, and the specification of the ventilation plate is 600mm × 600 mm; set up 6 groups of air flow guide vanes on the ventilating board 4, every air flow guide vanes of group 3 highly be 60mm, arrange and be in interval distance is 40mm between two adjacent air flow guide vanes 3 of ventilating board 4 intermediate position, arrange and be in interval between two adjacent air flow guide vanes 3 of ventilating board 4 both sides position is 100 mm. In this embodiment, the airflow guiding vane plate 3 includes a plate portion 301 and a wing portion 302, the wing portion 302 is in a micro-arc shape, an angle θ between the plate portion 301 and the wing portion 302 is an angle of 120 ° to 150 °, and a concave surface of the angle faces an air outlet of the downward air supply airflow. The height difference H between the top end of the middle micro-arc of the wing part 302 and the two end parts is 1/12-1/3, preferably 1/8-1/6, 1/6 in the embodiment, and particularly preferably 10 mm-20 mm in the embodiment. In the embodiment, the wing parts are arranged, so that turbulent rotating airflow formed by the lower air supply airflow is stronger.
As shown in fig. 3, a ventilation hole is provided on the ventilation board 4, the ventilation hole includes large holes 401 and small holes 402, the large holes 401 and the small holes 402 are staggered in the same direction, and the opening ratio on the ventilation board 4 is 30% to 70%, preferably 40% to 65%, and more preferably 65%. The specifications of the large holes 401 and the small holes 402 are not limited, that is, the large holes and the small holes are not limited to the same size, and the large holes 401 and the small holes 402 with various lengths can be arranged on one ventilating plate 4, and when the ventilating plate is arranged, the large holes and the small holes can be staggered, or the large holes and the small holes can be staggered, and the ventilating plate is transverse, longitudinal or oblique, so that the air flow supplied under the floor of the machine room generates a turbulent flow rotating air supply effect, and then is matched with the air flow guide vane plate 3, and a better turbulent flow rotating air supply effect is achieved.
In the present embodiment, as shown in fig. 7a and 7b, the wind pressure equalizing plate 2 is provided at a proper position below the floor main body 1 of the ventilation floor device. The appropriate positions described in this embodiment determine the specific installation positions and installation numbers based on Computational Fluid Dynamics (CFD) analysis of the air flow supplied from the data center room. For example: the air conditioner is arranged at the position 0.6-1.2 m in front of an air outlet of a lower air supply air conditioner with high air pressure, and the number of the air conditioner is 2-3; the lower air supply air conditioner with low air pressure is arranged in an area surrounding an IT cabinet under the floor of a machine room, and the number of the lower air supply air conditioner is 10-20. Which includes a fire canvas and fixing holes 201 at four corner positions. Concrete analysis is carried out according to the computational fluid dynamics CFD software of air supply under the computer lab, installs wind pressure balance plate 2 in proper position under floor main part 1, and the regulation of cold wind air current tissue under the floor is carried out to the four corners through the ribbon is fixed on the supporting leg of floor main part 1, reaches the demand of average appropriate amount supply air conditioning. The installation position of the wind pressure balance plate 2 needs to be analyzed and judged according to the actual situation on site, and the method is not limited to the situation.
As shown in fig. 11a, the lower air sending unit room of the data center is not adjusted by the air pressure balance plate, and if the air conditioning unit is stopped, the cold air delivery in a part of areas is insufficient, which causes a local hot spot phenomenon in the IT cabinet; as shown in fig. 11b, the air conditioning unit in the machine room is set to 3-1 mode, the air flow organization adjusted by the air pressure balance plate can uniformly convey cold air to each IT cabinet, and some local hot spots of the cabinets can not occur when the air conditioning unit is set for use.
Further, in this embodiment, the data acquisition device is arranged inside the frame structure 101 of the ventilated floor device, which comprises an infrared temperature measuring device, an air supply pressure measuring device and a communication device, wherein the infrared temperature measuring device is arranged at an air outlet 4 of the ventilation floor device, used for measuring the surface infrared temperature of equipment in an air supply area conveyed by the ventilation floor device, the air supply temperature measuring device is arranged at an air outlet 4 of the ventilation floor device, used for measuring the outlet air temperature of the surface of the floor main body 1 of the indoor ventilation floor device, an air supply and pressure measuring device is used for measuring the real-time pressure difference between the upper part of the floor main body 1 and the lower part of the floor main body 1 of the ventilation floor device, the signal transmission device converts the acquired analog parameters such as infrared temperature, air supply pressure and the like into digital signals and transmits the digital signals to the upper computer control device.
The infrared temperature measuring device can be an infrared thermometer and is provided with a photosensitive probe which is inserted between the airflow guide vanes 3. To ensure that the interference of external light reflection and refraction is avoided. If the infrared temperature measuring device is an infrared thermometer with the ratio of the measuring distance to the measuring light spot D: S being 8:1, the mounting position of the infrared thermometer on the airflow guide vane plate 3 is adjusted, for example, the infrared temperature measuring device is mounted on a universal positioning metal hose to detect the infrared temperature of the upper part of the front surface of the IT equipment cabinet.
Wherein, air supply wind pressure measuring device can adopt little differential pressure sensor, sets up on airflow guide vane 3, two detection pins of little differential pressure sensor are used for measuring the floor main part of ventilation floor device respectively and the wind pressure under the floor main part, obtain pressure differential between the two. In this embodiment, the wind pressure is collected in a range from-50 Pa to +50Pa, for example, when the ventilation floor is located in the machine room near the outlet of the downdraft air conditioner, the wind pressure may be negative, and when the ventilation floor is located far from the outlet of the downdraft air conditioner, the wind pressure is generally positive.
Furthermore, in this embodiment, the upper computer control system regulates and controls the turbulent type rotary lower air supply system in real time according to the temperature requirement. When the air supply of a plurality of arranged cabinets in a machine room is subjected to group control, the lower air supply system comprises a plurality of ventilation floor devices which are arranged in each machine room arrangement, and the upper computer control device is used for regulating and controlling the machine room air conditioning system, so that the whole machine room air conditioning system is safer and more reliable, the working condition is optimized, and the machine room air conditioning system can operate efficiently and energy-saving. The corresponding machine room power distribution capacity of the machine room air conditioning system which is vacated can meet the condition that the machine room power distribution energy storage system can be implemented without capacity increase, and the modular energy storage can be safely and effectively implemented to run with the machine room power distribution peak clipping valley filling land.
As shown in fig. 8, the plurality of air-conditioning cabinets are respectively in signal connection with the upper computer control device, the plurality of ventilation floor devices are in signal connection with the upper computer control device after being connected in parallel, and are in wired connection through an RS485 port of the signal transmission device or are in wireless connection to the upper computer control device through ZIGBEE of the signal transmission device.
The data acquisition device acquires the following data in real time: the infrared temperature of the surface of the equipment in the air supply area conveyed by the ventilation floor device, the air supply temperature of the surface of the floor main body measured by the air supply temperature measuring device and the real-time pressure difference between the upper part of the floor main body and the lower part of the floor main body measured by the air supply air pressure measuring device are measured by the infrared temperature measuring device. The data acquisition device transmits acquired data to the signal transmission device, and the signal transmission device converts received analog parameters such as infrared temperature, air supply pressure and the like into data parameter signals and transmits the data parameter signals to the upper computer control device. The upper computer control device determines the set temperature and the set air supply speed of the air conditioning unit of the machine room according to the cabinet load infrared temperature obtained by receiving the data parameter signal and calculating; or determining the set temperature of the air conditioning unit of the machine room according to the floor air supply temperature obtained by receiving the data parameter signal and calculating; determining the air supply speed of the air conditioner in the machine room according to the air supply pressure; or determining the set wind speed of all the air conditioning units according to the number of the air conditioning units with the EC fans; according to the ultrahigh temperature alarm collected by the machine room air conditioners or the fault alarm collected by a certain air conditioning unit through a power environment monitoring system, the wind speed of other air conditioners is increased (for example, 60% of 3 air conditioners is increased to 90%), the set temperature is reduced (for example, 25 ℃ of 3 air conditioners is reduced to 22 ℃), and then the air conditioners of a back-up common centrifugal fan are started according to the ultrahigh temperature or the fault alarm of the air conditioners (otherwise, redundant air conditioner spare machines are turned off, and the ratio of the redundant air conditioner spare machines is reduced) so as to save energy.
Such as: the air conditioner structure in the machine room is an EC fan, the original mode is a mode of opening 3 and 1, the fan runs by 100%, 4 air conditioner EC fans run in a hot standby mode with the set temperature increased by 2-3 ℃ when the rotating speed is 75% after being adjusted by an upper computer intelligent cooling system, the air supply quantity is ensured to be improved in safety, the fan saves electricity by 57.8%, the refrigeration system saves electricity by 7-10.5%, and the total electricity is saved by more than 30% on average; if other faults and alarms occur, the upper computer intelligent cooling system controls the fault air conditioner to stop running, the rotating speed of the fan of the air conditioner which does not alarm is increased to 100% to supplement the air output of the machine room, and the set temperature is reduced by 2 ℃ to supplement the cooling capacity of the machine room. If the air conditioner is constructed with a non-EC fan, the air conditioner in the machine room is also originally in a mode of opening 3 spare air conditioners 1, and after a fault and an alarm occur, the upper computer intelligent cooling system controls the redundant air conditioner spare air conditioners to be started so as to supplement the air supply amount and the cold amount of the machine room.
Further, air supply system still includes man-machine operation interface under this embodiment for show the parameter of the lower air supply air current that data acquisition device gathered, including infrared temperature value, ventilation floor device's floor air supply temperature, ventilation floor device's wind pressure.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A turbulent flow type rotary downward air supply system is characterized by comprising a ventilation floor device, a data acquisition device, a signal transmission device, an air pressure balance plate and an upper computer control device;
the ventilating floor device is used for supplying air to a room of a data center machine room and conveying downward air flow into the room in a turbulent type rotating mode and comprises a floor main body and an air flow guiding blade plate, wherein the floor main body and the ground form a frame structure, at least one ventilating plate is arranged on the floor main body, and the ventilating plate enables the lower portion of the floor main body to be communicated with the air above the floor main body;
the wind pressure balance plate is used for adjusting the lower air supply airflow organization;
the data acquisition device is used for acquiring parameters of the lower air supply airflow and transmitting the acquired data to the signal transmission device;
the signal transmission device is used for receiving the data acquired by the data acquisition device, converting the data and then transmitting the data to the upper computer control device;
and the upper computer control device regulates and controls the lower air supply system according to the received signal.
2. The turbulent rotating downdraft air supply system according to claim 1, wherein at least two sets of the air flow guiding vanes are arranged, the air flow guiding vanes are arranged in parallel, an angle of 25-90 degrees is formed between the downdraft air flow and the horizontal plane, and the ratio of the spacing distance between two adjacent air flow guiding vanes to the height of the air flow guiding vanes is 5: 6-5: 3.
3. The turbulent rotary downdraft air supply system according to claim 1, wherein a spacing between the air deflection blades arranged at a center of the ventilation board is smaller than a spacing between the air deflection blades arranged at both sides of the ventilation board.
4. The turbulent ventilation floor device according to claim 1, wherein the airflow guiding vane plate comprises a plate part and a wing part, the wing part is in a micro-arc shape, an angle of 120-150 ° is formed between the plate part and the wing part, the concave surface of the angle faces downward air supply flow, and the height ratio of the wing part to the plate part is 12: 1-3: 1.
5. The turbulent ventilation floor device of claim 1, further comprising a wind pressure balance plate disposed below the floor body for adjusting the lower supply airflow pattern.
6. The turbulent rotary downwind system of any of claims 1 to 5, wherein the data acquisition device is disposed inside a frame structure of the ventilated floor device, which comprises an infrared temperature measuring device, an air supply pressure measuring device and a communication device, the infrared temperature measuring device is used for measuring the surface infrared temperature of the equipment in the air supply area conveyed by the ventilation floor device, the air supply temperature measuring device is used for measuring the air outlet temperature of the surface of the floor main body of the indoor ventilation floor device, the air supply pressure measuring device is used for measuring the real-time pressure difference between the upper part of the floor main body and the lower part of the floor main body of the ventilation floor device, the signal transmission device converts the collected infrared temperature, air supply temperature and air supply pressure analog quantity parameters into data parameter signals and transmits the data parameter signals to the upper computer control device.
7. The turbulent type rotary downdraft air supply system according to claim 6, wherein the upper computer control device regulates and controls the air conditioning system of the machine room in real time according to the detected infrared temperature, air supply temperature and air supply pressure parameter requirements, and determines the set temperature and set air speed of the air conditioning group by using the obtained infrared temperature as the corresponding air supply temperature of the IT cabinet of the cold air channel; determining the set temperature of the air conditioner group through the obtained air supply temperature; determining set wind speeds of all air conditioner groups through the obtained wind pressure; and the wind speed of the non-fault air conditioner is increased according to the collected high-temperature alarm or the fault alarm of the air conditioner.
8. The turbulent rotary underfloor air supply system of claim 7, wherein the infrared temperature and supply air temperature measuring devices are installed at an air outlet of the ventilated floor apparatus, and the supply air pressure measuring device is installed at the air outlet of the ventilated floor apparatus.
9. The turbulent rotating downdraft air supply system according to claim 7, wherein the infrared temperature measuring device is an infrared thermometer having a light sensing probe that is inserted between the air deflection vanes.
10. The turbulent rotating underfloor air supply system according to claim 7, wherein the supply air pressure measuring device is a micro differential pressure sensor disposed on the airflow guiding vane, and two detecting pins of the micro differential pressure sensor are respectively used for measuring air pressures above and below the floor main body of the ventilation floor device to obtain a pressure difference therebetween.
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