WO2019128165A1 - 门体、机柜、模块化数据中心、防冷凝控制方法和装置 - Google Patents

门体、机柜、模块化数据中心、防冷凝控制方法和装置 Download PDF

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Publication number
WO2019128165A1
WO2019128165A1 PCT/CN2018/093213 CN2018093213W WO2019128165A1 WO 2019128165 A1 WO2019128165 A1 WO 2019128165A1 CN 2018093213 W CN2018093213 W CN 2018093213W WO 2019128165 A1 WO2019128165 A1 WO 2019128165A1
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WO
WIPO (PCT)
Prior art keywords
temperature
door body
cabinet
electric heating
outside
Prior art date
Application number
PCT/CN2018/093213
Other languages
English (en)
French (fr)
Inventor
王军超
刘欣
赵力
Original Assignee
维谛技术有限公司
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Filing date
Publication date
Application filed by 维谛技术有限公司 filed Critical 维谛技术有限公司
Publication of WO2019128165A1 publication Critical patent/WO2019128165A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1485—Servers; Data center rooms, e.g. 19-inch computer racks
    • H05K7/1488—Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20836—Thermal management, e.g. server temperature control

Definitions

  • the present invention relates to the field of communication equipment technologies, and in particular, to a door body, a cabinet, a modular data center, and an anti-condensation control method and apparatus.
  • the modular data center is a new type of data center model that is becoming more popular because of its ease of expansion, ease of standardization, ease of construction, and small footprint.
  • the modular data center integrates IT equipment (such as servers), power supply equipment, cabinets, refrigeration equipment, integrated wiring, security equipment, and fire fighting equipment within each modular unit to form a relatively independent data center.
  • modular data centers are provided with cold and hot aisles in the refrigeration system, while the cold aisles are typically in a separate enclosure or in a completely enclosed environment.
  • the cabinets in the modular data center are usually provided with transparent glass doors to allow the user to observe the status of the equipment in the cabinet.
  • the cold passage in the closed environment generally has a low temperature.
  • the temperature of the cold passage is different from the temperature outside the cabinet, the temperature of the outer surface of the glass door is lower than the dew point temperature of the air outside the cabinet, and the outer surface of the glass door is Condensation will occur, which will make it difficult for the user to observe the state of the equipment in the cabinet. More importantly, as the condensation generated increases, water droplets will flow from the outside of the glass door to the ground, damaging the working environment on the site.
  • the object of the embodiments of the present invention is to provide a door body, a cabinet, a modular data center, an anti-condensation control method and a device, to reduce the phenomenon of water mist in the door body, improve the transparency of the door body, and improve the cabinet or modular data.
  • the embodiment of the present invention provides a door body, which is applied to a cold passage of a cabinet or a modular data center.
  • the door body includes a fixed frame and at least two transparent door panels fixed to the fixed frame. There are gaps between the two adjacent transparent door panels and are sealed.
  • the fixing frame is at least two-layer structure, and the adjacent two layers are filled with a heat insulating medium, and at least one layer is disposed between the at least two transparent door panels. Electric heating film.
  • two adjacent transparent door panels are vacuum sealed or filled with an inert gas.
  • the electric heating film is disposed on a side of the at least two transparent door panels adjacent to the outside of the transparent door panel near the cold passage.
  • the electric heating film is disposed on a side of the at least two transparent door panels adjacent to the outside of the transparent door panel adjacent to the cold passage.
  • the door body comprises at least three transparent door panels, the at least three transparent door panels comprise at least one polycarbonate transparent plate and at least two glass transparent plates, the polycarbonate transparent plate and the electric heating At least one glass transparent plate is spaced between the membranes.
  • the cabinet further includes:
  • a cold channel temperature sensor disposed in the cold aisle, for detecting the cold aisle temperature
  • the dry and wet temperature sensor outside the cabinet is installed outside the cabinet to detect the temperature outside the cabinet and the humidity outside the cabinet;
  • the pressure sensor outside the cabinet is disposed outside the cabinet and is used for detecting the air pressure outside the cabinet;
  • a controller which is respectively connected to the cold channel temperature sensor, the off-board dry and wet temperature sensor, the off-board pressure sensor and the electric heating film, for using the outside temperature of the cabinet, the humidity outside the cabinet, and the air pressure outside the cabinet Determining a current dew point temperature, determining an outer surface temperature of the door body according to the door body parameter, the outside temperature of the cabinet, and the cold channel temperature, and controlling the electric heating film to be turned on according to the dew point temperature and the outer surface temperature or shut down.
  • controller is further configured to:
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • the determining the outer surface temperature of the door body according to the stored door body parameter, the outside temperature of the cabinet, and the cold channel temperature, and the specific formula is:
  • T og is the outer surface temperature
  • T o is the temperature outside the cabinet
  • T i is the cold channel temperature
  • K is the integrated heat transfer coefficient of the transparent door body. It is the conductivity coefficient outside the transparent door.
  • the door body opposite to the cold passage includes at least two transparent glass doors, and the gap between the two adjacent transparent door panels is sealed and sealed, so that the door body has better heat preservation effect and better insulation heat. Conduction, therefore, the cold in the cold passage is difficult to conduct to the surface of the transparent glass door close to the outside, so that the temperature of the outer surface of the door is not too low, so as to slow down the phenomenon of water mist in the door body, improve the transparency of the door body, and improve The working environment in which the cabinet or modular data center is located.
  • the temperature of the cold aisle is too low and the duration is too long, the temperature of the outer surface of the door may be too low. At this time, the electric heating film is opened to heat the door body, thereby preventing the temperature of the outer surface of the door from being too low. Therefore, it is more reliable to prevent the water mist from appearing in the door body.
  • the embodiment of the invention further provides a cabinet, which comprises a cold channel and a door body according to any one of the above aspects, wherein the door body is opposite to the cold channel.
  • the outer surface of the cabinet is less prone to condensation, thereby improving the working environment in which the cabinet is located.
  • the embodiment of the present invention further provides a modular data center, which includes a cold channel and a door body according to any one of the above aspects, wherein the door body is opposite to the cold channel.
  • the outer surface of the modular data center is less prone to condensation, thereby improving the working environment in which the modular data center is located.
  • the embodiment of the present invention further provides an anti-condensation control method applied to a door body in the technical solution of the present invention, and the anti-condensation control method of the cabinet includes:
  • the electric heating film is controlled to be turned on or off according to the dew point temperature and the outer surface temperature.
  • controlling the opening or closing of the electric heating film according to the dew point temperature and the outer surface temperature comprises:
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • the determining the outer surface temperature of the door body according to the stored door body parameter, the outside temperature of the cabinet, and the cold channel temperature specifically:
  • T og is the outer surface temperature
  • T o is the temperature outside the cabinet
  • T i is the cold channel temperature
  • K is the integrated heat transfer coefficient of the transparent door body. It is the conductivity coefficient outside the transparent door.
  • controlling the opening or closing of the electric heating film according to the dew point temperature and the outer surface temperature comprises:
  • the electric heating film After the electric heating film is turned on for a duration t 0 , the electric heating film is controlled to be turned off for a duration t 00 ;
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • t 0 is the on time
  • t 00 is the off time.
  • the on-duration duration t 0 is determined according to the following functional relationship:
  • t 1 is the first duration
  • S, k, and C 1 are constants, respectively
  • t max is the longest on-time.
  • the closing duration t 00 is determined according to the following functional relationship:
  • t 2 t max -t 1 +C 2
  • t 2 is the second duration
  • C 2 is a constant
  • t min is the shortest off time
  • the controller intelligently controls the opening and closing of the electric heating film according to the relationship between the outer surface temperature T og of the door body and the dew point temperature T d , thereby preventing the temperature of the outer surface of the door from being too low, thereby being more reliable. Prevent the appearance of water mist in the door.
  • the present invention also provides an anti-condensation control device applied to a door body in the technical solution of the present invention, and the anti-condensation control device of the cabinet includes:
  • Acquiring unit for obtaining cold channel temperature, temperature outside the cabinet, humidity outside the cabinet, and air pressure outside the cabinet;
  • a determining unit configured to determine a current dew point temperature according to the outside temperature of the cabinet, the humidity outside the cabinet, and the air pressure outside the cabinet; determining the according to the stored door body parameter, the temperature outside the cabinet, and the temperature of the cold channel The outer surface temperature of the door body;
  • control unit that controls the electric heating film to be turned on or off according to the dew point temperature and the outer surface temperature.
  • control unit is specifically configured to:
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • control unit is further specifically configured to:
  • the electric heating film After the electric heating film is turned on for a duration t 0 , the electric heating film is controlled to be turned off for a duration t 00 ;
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • t 0 is the on time
  • t 00 is the off time.
  • the controller intelligently controls the opening and closing of the electric heating film according to the relationship between the outer surface temperature T og of the door body and the dew point temperature T d , thereby preventing the temperature of the outer surface of the door from being too low, thereby being more reliable. Prevent the appearance of water mist in the door.
  • FIG. 1 is a schematic view showing the structure of a cabinet according to an embodiment of the present invention.
  • Figure 2 is a front elevational view of a door body in accordance with an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of a transparent door panel of a door body according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a sheet metal frame of a door body according to an embodiment of the present invention.
  • Figure 5 is a cross-sectional view showing a transparent door panel of a door body according to another embodiment of the present invention.
  • Figure 6 is a cross-sectional view showing a transparent door panel of a door body according to still another embodiment of the present invention.
  • FIG. 7 is a schematic flow chart of a method for controlling an anti-condensation of a door body according to an embodiment of the present invention.
  • FIG. 8 is a schematic flow chart of a method for controlling an anti-condensation of a door body according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural view of an anti-condensation control device for a door body according to an embodiment of the present invention.
  • the embodiment of the invention provides a door body, a cabinet, a modular data center, and anti-condensation. Control method and device. In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below.
  • a door body 130 is applied to a cold channel 110 of a cabinet 100 or a modular data center (not shown), and specifically, the door body 130 is applied to the cabinet 100 as an example.
  • the door body 130 includes a fixing frame 1 and at least two transparent door panels 2 fixed to the fixing frame 1, and a gap 21 between the two adjacent transparent door panels 2 and sealed;
  • the fixing frame 1 is at least a double-layer structure, and an insulating medium 11 is filled between adjacent two-layer structures; at least two layers of electrically heated films 3 are disposed between at least two transparent door panels 2.
  • the door body 130 opposite to the cold aisle 110 includes at least two transparent glass doors, and the gap between the two adjacent transparent door panels 2 has a gap 21 and is sealed, so that the door body 130 has better heat preservation effect.
  • the heat conduction is insulated, so that the cold in the cold aisle 110 is difficult to conduct to the surface of the transparent glass door close to the outside, so that the temperature of the outer surface of the door body 130 is not too low, so as to slow down the water mist of the door body 130.
  • the transparency of the door body 130 is improved, and the working environment in which the cabinet 100 is located is improved.
  • the temperature of the cold aisle 110 is too low and the duration is too long, the temperature of the outer surface of the door body 130 may be too low.
  • the electric heating film 3 is opened to heat the door body 130, thereby preventing the door body.
  • the temperature of the outer surface of 130 is too low, so that the water mist of the door body 130 is more reliably prevented.
  • the fixing frame 1 also adopts a multi-layer structure, and the insulating medium 11 is filled between the adjacent two layers, which can further improve the temperature isolation effect of the entire door body 130, thereby further The mitigation of the phenomenon of water mist in the door body 130.
  • the specific position of the electric heating film 3 disposed on the at least two transparent door panels 2 is not limited, and may be any layer, but closer to the outer surface of the door body 130, for the door.
  • the effect of increasing the temperature of the outer surface of the body 130 is better, and the effect on the refrigeration effect in the cold aisle 110 is smaller.
  • the electric heating film 3 is disposed on a side of the at least two transparent door panels 2 adjacent to the outside of the transparent door panel 2 adjacent to the cold aisle 110. Therefore, the temperature of the outer surface of the door body 130 can be effectively increased, and the influence on the cooling effect in the cold aisle 110 can be reduced.
  • the specific material and the manufacturing method of the above fixed frame are not limited, for example, may be a sheet metal frame, and the specific material may be an aluminum frame or a steel frame.
  • the above heat insulating medium may specifically be heat insulating cotton or heat insulating foam.
  • adjacent two transparent door panels are vacuum sealed or filled with an inert gas.
  • the multi-layer transparent door panel with vacuum sealing has good temperature isolation effect, and the low temperature of the cold passage is more difficult to make the temperature of the outer surface of the door too low, so that the phenomenon of water mist in the door body can be more effectively reduced.
  • the cost of the vacuum sealing is high, and an inert gas such as nitrogen gas may be optionally filled between the adjacent two transparent door panels, and the temperature isolation effect of the door panel may also be improved.
  • the door body 130 includes at least three transparent door panels 2, and at least three transparent door panels 2 include at least one polycarbonate transparent plate 22 and at least two glass transparent plates 23, and a polycarbonate transparent plate 22. At least one glass transparent plate 23 is spaced from the heating film.
  • the transparent door panel 2 can adopt the polycarbonate transparent plate 22, which is not only light in weight but also low in cost, but cannot withstand high temperature due to the limitation of the material of the polycarbonate transparent plate 22, so it needs to be separated from the electric heating film 3 at least.
  • the door body further includes a cold aisle temperature sensor, an off-cylinder dry and wet temperature sensor, an off-board pressure sensor, and a controller, wherein the cold aisle temperature sensor is disposed in the cold aisle for detecting the cold aisle temperature;
  • the dry and wet temperature sensor is installed outside the cabinet to detect the temperature outside the cabinet and the humidity outside the cabinet;
  • the pressure sensor outside the cabinet is set outside the cabinet to detect the air pressure outside the cabinet;
  • the controller is separately wet and cold with the cold channel temperature sensor and the cabinet.
  • the temperature sensor, the pressure sensor outside the cabinet and the electric heating film are connected to determine the current dew point temperature according to the temperature outside the cabinet, the humidity outside the cabinet and the air pressure outside the cabinet; the door body is determined according to the door body parameter, the temperature outside the cabinet and the temperature of the cold channel. Surface temperature; the electric heating film is turned on or off according to the dew point temperature and the outer surface temperature.
  • the electric heating film when the temperature of the outer surface of the door body is close to or lower than the dew point temperature, and condensation is likely to occur, the electric heating film can be controlled to be opened to heat the door body to prevent condensation; when the door body is outside When the surface temperature is higher than the dew point temperature setting value, when the condensation is not easy to occur, the electric heating film can be controlled to be closed to stop heating the door body.
  • T og ⁇ T d - d 1 the electric heating film is controlled to be turned on; when T og ⁇ T d + d 2 , the electric heating film is controlled to be turned off; wherein T og is the outer surface temperature, and T d is Dew point temperature, d is the set threshold.
  • the controller can control the electric heating film to be turned on or off according to the set condition and the acquired data.
  • the electric heating film is opened, and the outer surface of the door body is opened.
  • the temperature is high, the above electrically heated film can be turned off.
  • This embodiment can intelligently control the electric heating film to be turned on or off.
  • both d 1 and d 2 are positive numbers.
  • the electric heating film is turned on again.
  • the door body is heated to ensure that the outer surface temperature T og of the door body has been relatively stable below the dew point temperature T d . If the outer surface temperature T og of the door body can be slightly adjusted by itself, it will not cause condensation on the outer surface of the door body. , it is not necessary to open the above electric heating film to save energy, reduce the loss of the electric heating film, and improve the service life of the electric heating film.
  • the electric heating film is turned on for the door body, when the outer surface temperature T og of the door body is higher than the dew point temperature T d to reach the second set threshold d 2 , the electric heating film is closed to prevent the outer surface of the door body. Rapid cooling, it is necessary to turn on the electric heating film again in a short time, causing frequent repeated opening of the electric heating film to save energy, reduce the loss of the electric heating film, and improve the service life of the electric heating film.
  • the above determines the outer surface temperature of the door body according to the stored door body parameters, the temperature outside the cabinet, and the temperature of the cold channel.
  • the specific formula is:
  • T og is the outer surface temperature
  • T o is the temperature outside the cabinet
  • T i is the cold channel temperature
  • K is the integrated heat transfer coefficient of the transparent door body. It is the conductivity coefficient outside the transparent door.
  • the parameter K in the above formula It is determined according to the material of the transparent door panel, the distance between two adjacent transparent door panels, and the medium parameters.
  • the above parameters can be determined after the door body is completed, so it can be calculated that the door body parameters are marked on the corresponding door body. Then, the outer surface temperature of the door body can be determined by the above formula.
  • the door body parameters include a material of the transparent door panel, a distance between two adjacent transparent door panels, and a medium parameter.
  • the above parameters can be determined after the door body is completed, so it can be calculated that the door body parameters are marked on the corresponding door body and input to the controller.
  • an embodiment of the present invention further provides a cabinet 100 including a cold aisle 100 , a hot aisle 120 , and a door 130 in any of the above aspects.
  • the door 130 is opposite to the cold aisle 120 . .
  • the outer surface of the cabinet 100 is less prone to condensation, so that the working environment in which the cabinet 100 is located can be improved.
  • the embodiment of the present invention further provides a modular data center, which includes a cold channel and a door body in any of the above technical solutions, the door body being opposite to the cold channel.
  • the outer surface of the modular data center is less prone to condensation, thereby improving the working environment in which the modular data center is located.
  • an embodiment of the present invention further provides an anti-condensation control method applied to a door body in the technical solution of the present invention, and the anti-condensation control method of the door body includes:
  • the electric heating film is turned on or off according to the dew point temperature and the outer surface temperature.
  • the electric heating film when the temperature of the outer surface of the door body is close to or lower than the dew point temperature, and condensation is likely to occur, the electric heating film can be controlled to be opened to heat the door body to prevent condensation; when the door body is outside When the surface temperature is higher than the dew point temperature setting value, when the condensation is not easy to occur, the electric heating film can be controlled to be closed to stop heating the door body.
  • the electric heating film is controlled to be turned on
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • a specific embodiment of the anti-condensation control method of the cabinet of the present invention includes the following steps:
  • Step 101 Obtain a cold channel temperature, a temperature outside the cabinet, a humidity outside the cabinet, and an air pressure outside the cabinet;
  • Step 102 determining a current dew point temperature according to an outside temperature of the cabinet, a humidity outside the cabinet, and an air pressure outside the cabinet; determining an outer surface temperature of the door body according to the door body parameter, the temperature outside the cabinet, and the temperature of the cold channel;
  • Step 103 it is determined whether T og ⁇ T d - d 1 , and if so, step 104 is performed, otherwise step 101 is performed;
  • Step 104 controlling the electric heating film to be turned on
  • Step 105 it is determined whether T og ⁇ T d + d 2 , and if so, step 106 is performed, otherwise step 104 is performed;
  • Step 106 controlling the electric heating film to be closed.
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • the controller intelligently controls the opening and closing of the electric heating film according to the relationship between the outer surface temperature T og of the door body and the dew point temperature T d , thereby preventing the temperature of the outer surface of the door from being too low, thereby being more reliable. Prevent the appearance of water mist in the door.
  • the electric heating film is turned on to heat the door body, thereby ensuring that the outer surface temperature T og of the door body has been relatively Stable below the dew point temperature T d , if the outer surface temperature T og of the door body can be slightly adjusted by itself, and will not cause condensation on the outer surface of the door body, it is not necessary to open the above electric heating film to save energy and reduce electric heating.
  • the loss of the membrane increases the service life of the electrically heated membrane.
  • the electric heating film is turned on for the door body, when the outer surface temperature T og of the door body is higher than the dew point temperature T d to reach the second set threshold d 2 , the electric heating film is closed to prevent the outer surface of the door body. Rapid cooling, it is necessary to turn on the electric heating film again in a short time, causing frequent repeated opening of the electric heating film to save energy, reduce the loss of the electric heating film, and improve the service life of the electric heating film.
  • the first set threshold d 1 and the second set threshold d 2 are both positive numbers, and may be the same or different.
  • determining the outer surface temperature of the door body according to the door body parameter, the temperature outside the cabinet, and the temperature of the cold channel specifically includes:
  • T og is the outer surface temperature
  • T o is the temperature outside the cabinet
  • T i is the cold channel temperature
  • K is the integrated heat transfer coefficient of the transparent door body. It is the conductivity coefficient on the outside of the cabinet.
  • the parameter K in the above formula It is determined according to the material of the transparent door panel, the distance between two adjacent transparent door panels, and the medium parameters.
  • the above parameters can be determined after the door body is completed, so it can be calculated that the door body parameters are marked on the corresponding door body. Then, the outer surface temperature of the door body can be determined by the above formula.
  • the anti-condensation control method of the cabinet further includes:
  • the electric heating film is controlled to be turned on for a duration t 0 ;
  • the electric heating film After the electric heating film is turned on for a duration t 0 , the electric heating film is controlled to be turned off for a duration t 00 ;
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • t 0 is the on time
  • t 00 is the off time.
  • Step 201 Obtain a cold channel temperature, a temperature outside the cabinet, a humidity outside the cabinet, and an air pressure outside the cabinet;
  • Step 202 determining a current dew point temperature according to an outside temperature of the cabinet, a humidity outside the cabinet, and an air pressure outside the cabinet; determining an outer surface temperature of the door body according to the door body parameter, the temperature outside the cabinet, and the temperature of the cold channel;
  • Step 203 it is determined whether T og ⁇ T d - d 1 , and if so, step 204 is performed, otherwise step 201 is performed;
  • Step 204 controlling the electric heating film to open for a duration t 0 ;
  • Step 205 controlling the electric heating film to be closed for a duration t 00 ;
  • Step 206 it is determined whether T og ⁇ T d + d 2 , and if so, step 207 is performed, otherwise step 204 is performed;
  • Step 207 controlling the electric heating film to be closed.
  • the electric heating film when T og ⁇ T d - d 1 , the electric heating film is controlled to be turned on for a duration t 0 to prevent the electric heating film from being overheated for a long period of time, causing overheating of the electric heating film, reducing the loss of the electric heating film, and improving the electric heating film.
  • the service life After the electric heating film is turned on for a duration t 0 , the electric heating film is controlled to be turned off for a duration t 00 so that the electric heating film can stop heating. At this time, the temperature of the electric heating film does not continue to rise, and the electric heating film can be protected. Moreover, the temperature of the electric heating film can also heat the door body so that the temperature of the door body continues to rise.
  • the electric heating film After the electric heating film is turned off for a duration t 00 , it is judged whether the temperature of the outer surface of the door body has satisfied T og ⁇ T d + d 2 , and if so, the electric heating film can be turned off to stop heating, otherwise, the electric power can be turned on again.
  • the film is heated for a duration t 0 to cycle the above process until the temperature of the outer surface of the door body has satisfied T og ⁇ T d + d 2 .
  • the electric heating film opening duration t 0 is determined according to the following functional relationship:
  • t 1 is the first duration
  • S, k, and C 1 are constants, respectively
  • t max is the longest on-time.
  • the specific value of the first set time period t 1 may be determined according to the difference between the outer surface temperature T og of the door body and the dew point temperature T d . When the temperature difference is larger, t 1 is larger. In this way, the specific value of the duration of the electric heating film opening duration t 0 can be determined. However, in order to protect the electric heating film is not overheating, it is necessary to set length of the longest open time t max, i.e. electrical heating membrane opener long duration t 0 t max is not greater than the maximum open duration. The specific maximum opening time t max can be determined according to the parameters of the electrically heated film.
  • the off duration t 00 is determined according to the following functional relationship:
  • t 2 t max -t 1 +C 2
  • t 2 is the second duration
  • C 2 is a constant
  • t min is the shortest off time.
  • the second set time period t 2 can be determined by the longest opening time period t max and the first set time period t 1 .
  • the minimum closing time t min that is, the electric heating film closing duration t 00 cannot be less than the short closing time t min .
  • the specific minimum closing time t min can be determined according to the parameters of the electrically heated film.
  • the present invention also provides an anti-condensation control device applied to a door body in the technical solution of the present invention.
  • the anti-condensation control device of the door body includes:
  • the obtaining unit 4 is configured to obtain a cold channel temperature, a temperature outside the cabinet, a humidity outside the cabinet, and an air pressure outside the cabinet;
  • the determining unit 5 is configured to determine a current dew point temperature according to the temperature outside the cabinet, the humidity outside the cabinet, and the air pressure outside the cabinet; determining the outer surface temperature of the door body according to the door body parameter, the temperature outside the cabinet, and the temperature of the cold channel;
  • the control unit 6 controls the electric heating film to be turned on or off according to the dew point temperature and the outer surface temperature.
  • control unit 6 is specifically configured to control the electric heating film to be turned on when T og ⁇ T d - d 1 ; and to control the electric heating film when T og ⁇ T d + d 2 shut down;
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • control unit 6 is further configured to control the electric heating film to be turned on for a duration t 0 when T og ⁇ T d - d 1 ; and to control the electric heating film to be turned off after the electric heating film is turned on for a duration t 0 Duration t 00 ; After the electric heating film is turned off for a long time t 00 , when T og ⁇ T d + d 2 , the electric heating film is controlled to be turned off, and when T og ⁇ T d + d 2 , the electric heating film is turned on for a long duration.
  • T og is the outer surface temperature
  • T d is the dew point temperature
  • d 1 is the first set threshold
  • d 2 is the second set threshold
  • t 0 is the on-time
  • t 00 is the off-length.
  • the controller intelligently controls the opening and closing of the electric heating film according to the relationship between the outer surface temperature T og of the door body and the dew point temperature T d , thereby preventing the temperature of the outer surface of the door from being too low, thereby being more reliable. Prevent the appearance of water mist in the door.

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Abstract

本发明公开一种门体、机柜、模块化数据中心、防冷凝控制方法和装置，以减缓门体出现水雾的现象，提高门体的透明效果，改善机柜或模块化数据中心所处的工作环境。本发明实施例提供的门体应用于机柜或模块化数据中心的冷通道，具体的，门体包括固定框架和固定于固定框架的至少两层透明门板，相邻两层透明门板之间具有间隙且密封，固定框架至少为双层结构，相邻两层结构之间填充有保温介质，至少两层透明门板之间至少设置有一层电加热膜。

Description

门体、机柜、模块化数据中心、防冷凝控制方法和装置
本申请要求于2017年12月26日提交中国专利局、申请号为201711434662.X、发明名称为“门体、机柜、模块化数据中心、防冷凝控制方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通讯设备技术领域，特别是涉及一种门体、机柜、模块化数据中心、防冷凝控制方法和装置。
背景技术
模块化数据中心是一种新型的数据中心模式，因具有易于扩展、易于标准化、施工简单以及占地面积小等优点，该部署方式越来越受欢迎。模块化数据中心是在每个模块单元内部将IT设备(例如服务器)、供电设备、柜体、制冷设备、综合布线、安防设备和消防设备等集成在一起，形成相对独立的数据中心。
目前，模块化数据中心在制冷系统中，设置有冷通道和热通道，而冷通道通常处于单独封闭或者是整个机柜完全封闭的环境中。此外，模块化数据中心的机柜通常设置透明玻璃门，以便于用户观察机柜内设备的状态。
现有技术中，封闭环境中的冷通道一般温度较低，当冷通道温度与柜外温度相差较大时，玻璃门外表面的温度低于柜外空气的露点温度时，在玻璃门外表面会产生凝露，会导致用户难以观察机柜内设备的状态，更重要的是随着产生的凝露的增加，会有水滴从玻璃门外流下至地面，破坏现场的工作环境。
发明内容
本发明实施例的目的是提供一种门体、机柜、模块化数据中心、防冷凝控制方法和装置，以减缓门体出现水雾的现象，提高门体的透明效果，改善机柜或模块化数据中心所处的工作环境。
本发明实施例提供了一种门体，该门体应用于机柜或模块化数据中心的冷通道，具体的，所述门体包括固定框架和固定于所述固定框架的至少两层透明门板，相邻两层所述透明门板之间具有间隙且密封，所述固定框架至少为双层结构，相邻两层结构之间填充有保温介质，所述至少两层透明门板之间至少设置有一层电加热膜。
可选的，相邻两层所述透明门板之间真空密封，或者填充有惰性气体。
具体的，所述电加热膜设置于所述至少两层透明门板中与外界相邻的透明门板靠近所述冷通道的一侧。
优选的，所述电加热膜设置于所述至少两层透明门板中与外界相邻的透明门板靠近所述冷通道的一侧。
具体的，所述门体包括至少三层透明门板，所述至少三层透明门板包括至少一层聚碳酸酯透明板和至少两层玻璃透明板，所述聚碳酸酯透明板与所述电加热膜之间至少间隔一层玻璃透明板。
优选的，所述机柜还包括：
冷通道温度传感器，设置于冷通道，用于检测冷通道温度；
柜外干湿温度传感器，设置于柜外，用于检测柜外温度和柜外湿度；
柜外压力传感器，设置于柜外，用于检测柜外空气压力；
控制器，分别与所述冷通道温度传感器、柜外干湿温度传感器、柜外压力传感器和电加热膜连接，用于根据所述柜外温度、所述柜外湿度和所述柜外空气压力确定当前露点温度，根据门体参数、所述柜外温度和所述冷通道温度确定所述门体的外表面温度，根据所述露点温度和所述外表面温度控制所述电加热膜开启或者关闭。
具体的，所述控制器还用于，
当T og≤T d–d 1时，控制所述电加热膜开启；
当T og≥T d+d 2时，控制所述电加热膜关闭；
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
具体的，所述根据存储的门体参数、所述柜外温度和所述冷通道温度确定所述门体的外表面温度，具体公式为：
Figure PCTCN2018093213-appb-000001
其中，T og为外表面温度，T o为柜外温度，T i为冷通道温度，K为透明门体的综合传热系数，
Figure PCTCN2018093213-appb-000002
为透明门体外侧传导系数。
该实施例中，与冷通道相对的门体包括至少两层透明玻璃门，且相邻两层透明门板之间具有间隙且密封，则该门体的保温效果较好，而已较好的隔绝热量传导，因此，冷通道内的冷难以传导至透明玻璃门靠近外界的表面，从而保持门体外表面的温度不会过低，以减缓门体出现水雾的现象，提高门体的透明效果，改善机柜或模块化数据中心所处的工作环境。此外，当冷通道的温度过低，且持续时长过长时，也有可能导致门体外表面的温度过低，此时打开上述电加热膜为门体加热，即可防止门体外表面的温度过低，从而更加可靠的防止门体出现水雾的现象。
本发明实施例还提供了一种机柜，该机柜包括冷通道和上述任一技术方案所述的门体，所述门体与所述冷通道相对。
该实施例中，机柜的外表面不容易产生凝露，从而可以改善机柜所处的工作环境。
本发明实施例还提供了一种模块化数据中心，该模块化数据中心包括冷通道和上述任一技术方案所述的门体，所述门体与所述冷通道相对。
该实施例中，模块化数据中心的外表面不容易产生凝露，从而可以改善模块化数据中心所处的工作环境。
基于相同的发明构思，本发明实施例还提供了一种应用于本发明技术方案中门体的防冷凝控制方法，该机柜的防冷凝控制方法包括：
获取冷通道温度、柜外温度、柜外湿度和柜外空气压力；
根据所述柜外温度、所述柜外湿度和所述柜外空气压力确定当前露点温度；根据存储的门体参数、所述柜外温度和所述冷通道温度确定所述门体的外表面温度；
根据所述露点温度和所述外表面温度控制所述电加热膜开启或者关闭。
具体的，所述根据所述露点温度和所述外表面温度控制所述电加热膜开启或者关闭，具体包括：
当T og≤T d–d 1时，控制所述电加热膜开启；
当T og≥T d+d 2时，控制所述电加热膜关闭；
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
具体的，所述根据存储的门体参数、所述柜外温度和所述冷通道温度确定所述门体的外表面温度，具体为：
根据函数关系式
Figure PCTCN2018093213-appb-000003
确定所述门体的外表面温度；
其中，T og为外表面温度，T o为柜外温度，T i为冷通道温度，K为透明门体的综合传热系数，
Figure PCTCN2018093213-appb-000004
为透明门体外侧传导系数。
优选的，所述根据所述露点温度和所述外表面温度控制所述电加热膜开启或者关闭，具体包括：
当T og≤T d–d 1时，控制所述电加热膜开启持续时长t 0；
在所述电加热膜开启持续时长t 0后，控制所述电加热膜关闭持续时长t 00；
在所述电加热膜关闭持续时长t 00后，当T og≥T d+d 2时，控制所述电加热膜关闭，当T og＜T d+d 2时，控制所述电加热膜开启持续时长t 0；
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值，t 0为开启时长，t 00为关闭时长。
具体的，所述开启持续时长t 0根据下列函数关系式确定：
Figure PCTCN2018093213-appb-000005
其中，
Figure PCTCN2018093213-appb-000006
t 1为第一时长，S、k和C 1分别为常数，t max为最长开启时长。
具体的，所述关闭持续时长t 00根据下列函数关系式确定：
Figure PCTCN2018093213-appb-000007
其中，t 2＝t max-t 1+C 2，t 2为第二时长，C 2为常数，t min为最短关闭时长。
本发明实施例中，控制器根据门体的外表面温度T og与露点温度T d之间的关系，智能控制电加热膜的开启和关闭，从而防止门体外表面的温度过低，从而更加可靠的防止门体出现水雾的现象。一方面，无需人工控制开启和关闭上述电加热膜，节约人力成本；另一方面，可以在非必要的时候关闭上述电加热膜，从而节约能源和防止过热。
基于相同的发明构思，本发明还提供了一种应用于本发明技术方案中门体的防冷凝控制装置，该机柜的防冷凝控制装置包括：
获取单元，用于获取冷通道温度、柜外温度、柜外湿度和柜外空气压力；
确定单元，用于根据所述柜外温度、所述柜外湿度和所述柜外空气压力确定当前露点温度；根据存储的门体参数、所述柜外温度和所述冷通道温度确定所述门体的外表面温度；
控制单元，根据所述露点温度和所述外表面温度控制所述电加热膜开启或者关闭。
具体的，所述控制单元，具体用于，
当T og≤T d–d 1时，控制所述电加热膜开启；
当T og≥T d+d 2时，控制所述电加热膜关闭；
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
优选的，所述控制单元，还具体用于，
当T og≤T d–d 1时，控制所述电加热膜开启持续时长t 0；
在所述电加热膜开启持续时长t 0后，控制所述电加热膜关闭持续时长t 00；
在所述电加热膜关闭持续时长t 00后，当T og≥T d+d 2时，控制所述电加热膜关闭，当T og＜T d+d 2时，控制所述电加热膜开启持续时长t 0；
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值，t 0为开启时长，t 00为关闭时长。
本发明实施例中，控制器根据门体的外表面温度T og与露点温度T d之间的关系，智能控制电加热膜的开启和关闭，从而防止门体外表面的温度过低，从而更加可靠的防止门体出现水雾的现象。一方面，无需人工控制开启和关闭上述电加热膜，节约人力成本；另一方面，可以在非必要的时候关闭上述电加热膜，从而节约能源和防止过热。
附图说明
图1为本发明一实施例中机柜结构的示意图；
图2为本发明一实施例中门体的主视图；
图3为本发明一实施例中门体的透明门板的剖视图；
图4为本发明一实施例中门体的钣金框架的剖视图；
图5为本发明另一实施例中门体的透明门板的剖视图；
图6为本发明又一实施例中门体的透明门板的剖视图；
图7为本发明一实施例中门体的防冷凝控制方法的流程示意图；
图8为本发明另一实施例中门体的防冷凝控制方法的流程示意图；
图9为本发明一实施例中门体的防冷凝控制装置的结构示意图。
附图标记：
100-机柜；                  110-冷通道；
120-热通道；                130-门体；
1-固定框架；                11-保温介质；
2-透明门板；               21-间隙；
22-聚碳酸酯透明板；        23-玻璃透明板；
3-电加热膜；               4-获取单元；
5-确定单元；               6-控制单元。
具体实施方式
为了减缓门体出现水雾的现象，提高门体的透明效果，改善机柜或模块化数据中心所处的工作环境，本发明实施例提供了一种门体、机柜、模块化数据中心、防冷凝控制方法和装置。为使本发明的目的、技术方案和优点更加清楚，以下举实施例对本发明作进一步详细说明。
如图1至图6所示，本发明一实施例提供的门体130应用于机柜100或模块化数据中心(未示出)的冷通道110，下面具体以门体130应用于机柜100为例，来详细说明本方案的内容：具体的，门体130包括固定框架1和固定于固定框架1的至少两层透明门板2，相邻两层透明门板2之间具有间隙21且密封；固定框架1至少为双层结构，相邻两层结构之间填充有保温介质11；至少两层透明门板2之间至少设置有一层电加热膜3。
该实施例中，与冷通道110相对的门体130包括至少两层透明玻璃门，且相邻两层透明门板2之间具有间隙21且密封，则该门体130的保温效果较好，而已较好的隔绝热量传导，因此，冷通道110内的冷难以传导至透明玻璃门靠近外界的表面，从而保持门体130外表面的温度不会过低，以减缓门体130出现水雾的现象，提高门体130的透明效果，改善机柜100所处的工作环境。此外，当冷通道110的温度过低，且持续时长过长时，也有可能导致门体130外表面的温度过低，此时打开上述电加热膜3为门体130加热，即可防止门体130外表面的温度过低，从而更加可靠的防止门体130出现水雾的现象。
此外，除了透明门板2采用多层结构以外，固定框架1也采用多层结构，且相邻两层结构之间填充有保温介质11，可以进一步的提高整个门体130的隔温效果，从而进一步的减缓门体130出现水雾的现象。
请参考图5和图6，具体的实施例中，电加热膜3设置于上述至少两层透明门板2的具体位置不限，可以为任一层，但是越靠近门体130外表面，对于门体130外表面的温度的提高效果越好，且对冷通道110内的制冷效果影响越小。
请参考图6，优选的实施例中，电加热膜3设置于至少两层透明门板2中与外界相邻的透明门板2靠近冷通道110的一侧。从而能有效的提高门体130外表面的温度，降低对冷通道110内的制冷效果的影响。
具体的，上述固定框架的具体材料和制作方式不限，例如，可以为钣金框架，具体材质可以为铝质框架或者钢框架。上述保温介质具体可以为保温棉或者保温泡沫等。
优选的实施例中，相邻两层透明门板之间真空密封，或者填充有惰性气体。采用真空密封的多层透明门板隔温效果好，冷通道的低温更加难以使门体外表面的温度过低，因此，可以更加有效的减缓门体出现水雾的现象。但是，真空密封的成本较高，也可以选择在相邻两层透明门板之间填充惰性气体，例如氮气等，也可以提高门板的隔温效果。
请参考图5和图6，门体130包括至少三层透明门板2，至少三层透明门板2包括至少一层聚碳酸酯透明板22和至少两层玻璃透明板23，聚碳酸酯透明板22与加热膜之间至少间隔一层玻璃透明板23。
本发明实施例中，透明门板2可以采用聚碳酸酯透明板22，不仅重量轻而且成本低，但是由于聚碳酸酯透明板22材料的限制，不能承受高温，因此需要与电加热膜3相隔至少一层玻璃透明基板，以防止聚碳酸酯透明板22出现变形等损坏。
优选的实施例中，门体还包括冷通道温度传感器、柜外干湿温度传感器、柜外压力传感器和控制器，其中，冷通道温度传感器设置于冷通道，用于检测冷通道温度；柜外干湿温度传感器设置于柜外，用于检测柜外温度和柜外湿度；柜外压力传感器设置于柜外，用于检测柜外空气压力；控制器分别与冷通道温度传感器、柜外干湿温度传感器、柜外压力传感器和电加热膜连接，用于根据柜外温度、柜外湿度和柜外空气压力确定当前露点温度；根据门体参数、柜外 温度和冷通道温度确定门体的外表面温度；根据露点温度和外表面温度控制电加热膜开启或者关闭。
该实施例中，当门体的外表面温度接近或者低于露点温度，容易产生凝露时，则可以控制电加热膜开启，来为门体加热，以防产生凝露；当门体的外表面温度高于露点温度设定值，不容易产生凝露时，则可以控制电加热膜关闭，以停止为门体加热。
具体的，可以当T og≤T d–d 1时，控制电加热膜开启；当T og≥T d+d 2时，控制电加热膜关闭；其中，T og为外表面温度，T d为露点温度，d为设定阈值。
该实施例中，控制器可以根据设定的条件和获取的数据，控制电加热膜开启或者关闭，当门体的外表面温度较低时，就打开上述电加热膜，当门体的外表面温度较高时，则可以关闭上述电加热膜。该实施例可以智能的控制电加热膜开启或者关闭。
具体的，本发明实施例中，d 1和d 2均为正数，当门体的外表面温度T og低于露点温度T d达到第一设定阈值d 1时，再开启电加热膜为门体加热，从而保证门体的外表面温度T og已经较为稳定的低于露点温度T d，若门体的外表面温度T og可以自身轻微调节，不会导致门体的外表面产生凝露，则不必打开上述电加热膜，以节约能源，减少电加热膜的损耗，提高电加热膜的使用寿命。同样，开启电加热膜为门体加热后，当门体的外表面温度T og高于露点温度T d达到第二设定阈值d 2时，再关闭电加热膜，以防止门体的外表面迅速降温，需要在短时间内再次开启电加热膜，造成电加热膜的频繁反复开启，以节约能源，减少电加热膜的损耗，提高电加热膜的使用寿命。
具体的，上述根据存储的门体参数、柜外温度和冷通道温度确定门体的外表面温度，具体公式为：
Figure PCTCN2018093213-appb-000008
其中，T og为外表面温度，T o为柜外温度，T i为冷通道温度，K为透明门体的综合传热系数，
Figure PCTCN2018093213-appb-000009
为透明门体外侧传导系数。
上述公式中的参数K与
Figure PCTCN2018093213-appb-000010
根据透明门板的材质、相邻两层透明门板之间的距离和介质参数确定。上述参数在门体制作完成后即可确定，因此可以之间计算出门体参数标注于相应的门体。则通过上述公式可以确定门体的外表面温度。
具体的，上述门体参数包括透明门板的材质、相邻两层透明门板之间的距离和介质参数。上述参数在门体制作完成后即可确定，因此可以之间计算出门体参数标注于相应的门体，并输入至控制器。
如图1所示，本发明实施例还提供了一种机柜100，该机柜100包括冷通道100、热通道120和上述任一技术方案中的门体130，该门体130与冷通道120相对。
该实施例中，机柜100的外表面不容易产生凝露，从而可以改善机柜100所处的工作环境。
本发明实施例还提供了一种模块化数据中心，该模块化数据中心包括冷通道和上述任一技术方案中的门体，该门体与上述冷通道相对。
该实施例中，模块化数据中心的外表面不容易产生凝露，从而可以改善模块化数据中心所处的工作环境。
基于相同的发明构思，本发明实施例还提供了一种应用于本发明技术方案中门体的防冷凝控制方法，该门体的防冷凝控制方法包括：
获取冷通道温度、柜外温度、柜外湿度和柜外空气压力；
根据柜外温度、柜外湿度和柜外空气压力确定当前露点温度；根据门体参数、柜外温度和冷通道温度确定门体的外表面温度；
根据露点温度和外表面温度控制电加热膜开启或者关闭。
该实施例中，当门体的外表面温度接近或者低于露点温度，容易产生凝露时，则可以控制电加热膜开启，来为门体加热，以防产生凝露；当门体的外表面温度高于露点温度设定值，不容易产生凝露时，则可以控制电加热膜关闭，以停止为门体加热。
具体的实施例中，当T og≤T d–d 1时，控制电加热膜开启；
当T og≥T d+d 2时，控制电加热膜关闭；
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
请参考图7，本发明机柜的防冷凝控制方法一个具体的实施例，包括以下步骤：
步骤101、获取冷通道温度、柜外温度、柜外湿度和柜外空气压力；
步骤102、根据柜外温度、柜外湿度和柜外空气压力确定当前露点温度；根据门体参数、柜外温度和冷通道温度确定门体的外表面温度；
步骤103、判断是否T og≤T d–d 1，若是，执行步骤104，否则执行步骤101；
步骤104、控制电加热膜开启；
步骤105、判断是否T og≥T d+d 2，若是，执行步骤106，否则执行步骤104；
步骤106、控制电加热膜关闭。
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
本发明实施例中，控制器根据门体的外表面温度T og与露点温度T d之间的关系，智能控制电加热膜的开启和关闭，从而防止门体外表面的温度过低，从而更加可靠的防止门体出现水雾的现象。一方面，无需人工控制开启和关闭上述电加热膜，节约人力成本；另一方面，可以在非必要的时候关闭上述电加热膜，从而节约能源和防止过热。
具体的，当门体的外表面温度T og低于露点温度T d达到第一设定阈值d 1时，再开启电加热膜为门体加热，从而保证门体的外表面温度T og已经较为稳定的低于露点温度T d，若门体的外表面温度T og可以自身轻微调节，不会导致门体的外表面产生凝露，则不必打开上述电加热膜，以节约能源，减少电加热膜的损耗，提高电加热膜的使用寿命。同样，开启电加热膜为门体加热后，当门体的外表面温度T og高于露点温度T d达到第二设定阈值d 2时，再关闭电加热膜，以防止门体的外表面迅速降温，需要在短时间内再次开启电加热膜，造成电加热膜的频繁反复开启，以节约能源，减少电加热膜的损耗，提高电加热膜的使用寿命。
具体的实施例中，上述第一设定阈值d 1和第二设定阈值d 2均为正数，且可 以相同也可以不同。
具体的，根据门体参数、柜外温度和冷通道温度确定门体的外表面温度具体包括：
Figure PCTCN2018093213-appb-000011
其中，T og为外表面温度，T o为柜外温度，T i为冷通道温度，K为透明门体的综合传热系数，
Figure PCTCN2018093213-appb-000012
为柜外侧传导系数。
上述公式中的参数K与
Figure PCTCN2018093213-appb-000013
根据透明门板的材质、相邻两层透明门板之间的距离和介质参数确定。上述参数在门体制作完成后即可确定，因此可以之间计算出门体参数标注于相应的门体。则通过上述公式可以确定门体的外表面温度。
一个优选实施例中，该机柜的防冷凝控制方法还包括：
当T og≤T d–d 1时，控制电加热膜开启持续时长t 0；
在电加热膜开启持续时长t 0后，控制电加热膜关闭持续时长t 00；
在电加热膜关闭持续时长t 00后，当T og≥T d+d 2时，控制电加热膜关闭，当T og＜T d+d 2时，控制电加热膜开启持续时长t 0；
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值，t 0为开启时长，t 00为关闭时长。
请参考图8，该实施例中，包括以下步骤：
步骤201、获取冷通道温度、柜外温度、柜外湿度和柜外空气压力；
步骤202、根据柜外温度、柜外湿度和柜外空气压力确定当前露点温度；根据门体参数、柜外温度和冷通道温度确定门体的外表面温度；
步骤203、判断是否T og≤T d–d 1，若是，执行步骤204，否则执行步骤201；
步骤204、控制电加热膜开启持续时长t 0；
步骤205、控制电加热膜关闭持续时长t 00；
步骤206、判断是否T og≥T d+d 2，若是，执行步骤207，否则执行步骤204；
步骤207、控制电加热膜关闭。
该实施例中，当T og≤T d–d 1时，控制电加热膜开启持续时长t 0，以防止电 加热膜长期工作导致电加热膜过热，减少电加热膜的损耗，提高电加热膜的使用寿命。在电加热膜开启持续时长t 0后，控制电加热膜关闭持续时长t 00，以使电加热膜可以停止升温。此时，电加热膜的温度不会继续升高，可以保护电加热膜，而且，电加热膜的温度还可以为门体加热，以使门体的温度继续升高。待控制电加热膜关闭持续时长t 00后，判断门体的外表面的温度是否已经满足T og≥T d+d 2，若是，则可以关闭电加热膜停止加热，否则，则可以再次开启电加热膜持续时长t 0，以循环进行上述过程，直至门体的外表面的温度是否已经满足T og≥T d+d 2。
上述实施例中，电加热膜开启持续时长t 0根据下列函数关系式确定：
Figure PCTCN2018093213-appb-000014
其中，
Figure PCTCN2018093213-appb-000015
t 1为第一时长，S、k和C 1分别为常数，t max为最长开启时长。
根据门体的外表面温度T og与露点温度T d的差值可以确定第一设定时长t 1的具体值，当温差越大，t 1越大。以此可以确定电加热膜开启持续时长t 0具体值。但是，为了保护电加热膜不会过热，需要设定最长开启时长t max，也就是电加热膜开启持续时长t 0不能大于最长开启时长t max。具体的最长开启时长t max可以根据电加热膜的参数进行确定。
更优的实施例中，关闭持续时长t 00根据下列函数关系式确定：
Figure PCTCN2018093213-appb-000016
其中，t 2＝t max-t 1+C 2，t 2为第二时长，C 2为常数，t min为最短关闭时长。该实施例中，通过最长开启时长t max和第一设定时长t 1可以确定第二设定时长t 2。但是，若计算得到的第一设定时长t 1较大，会导致第二设定时长t 2过小，关闭电加热膜的时间过短则无法使电加热膜降温到符合要求的水平，电加热膜的温度还是会比较高，因此，需要设定最短关闭时长t min，也就是电加热膜关闭持续 时长t 00不能小于最短关闭时长t min。具体的最短关闭时长t min可以根据电加热膜的参数进行确定。
基于相同的发明构思，本发明还提供了一种应用于本发明技术方案中门体的防冷凝控制装置，如图9所示，该门体的防冷凝控制装置包括：
获取单元4，用于获取冷通道温度、柜外温度、柜外湿度和柜外空气压力；
确定单元5，用于根据柜外温度、柜外湿度和柜外空气压力确定当前露点温度；根据门体参数、柜外温度和冷通道温度确定门体的外表面温度；
控制单元6，根据露点温度和外表面温度控制电加热膜开启或者关闭。
优选的实施例中，上述控制单元6具体用于，当T og≤T d–d 1时，控制所述电加热膜开启；当T og≥T d+d 2时，控制所述电加热膜关闭；
其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
优选的实施例中，控制单元6还用于当T og≤T d–d 1时，控制电加热膜开启持续时长t 0；在电加热膜开启持续时长t 0后，控制电加热膜关闭持续时长t 00；在电加热膜关闭持续时长t 00后，当T og≥T d+d 2时，控制电加热膜关闭，当T og＜T d+d 2时，控制电加热膜开启持续时长t 0；其中，T og为外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值，t 0为开启时长，t 00为关闭时长。
本发明实施例中，控制器根据门体的外表面温度T og与露点温度T d之间的关系，智能控制电加热膜的开启和关闭，从而防止门体外表面的温度过低，从而更加可靠的防止门体出现水雾的现象。一方面，无需人工控制开启和关闭上述电加热膜，节约人力成本；另一方面，可以在非必要的时候关闭上述电加热膜，从而节约能源和防止过热。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及
其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (18)

  1. 一种门体，应用于机柜或模块化数据中心的冷通道，其特征在于，所述门体包括固定框架和固定于所述固定框架的至少两层透明门板，所述至少两层透明门板中的相邻两层透明门板之间具有间隙且密封，所述固定框架至少为双层结构，所述固定框架中的相邻的两层结构之间填充有保温介质，所述至少两层透明门板之间至少设置有一层电加热膜。
  2. 如权利要求1所述的门体，其特征在于，所述相邻两层透明门板之间为真空密封，或者填充有惰性气体。
  3. 如权利要求1所述的门体，其特征在于，所述电加热膜设置于所述至少两层透明门板中与外界相邻的透明门板靠近所述冷通道的一侧。
  4. 如权利要求1所述的门体，其特征在于，所述门体包括至少三层透明门板，所述至少三层透明门板包括至少一层聚碳酸酯透明板和至少两层玻璃透明板，所述聚碳酸酯透明板与所述电加热膜之间至少间隔一层玻璃透明板。
  5. 如权利要求1所述的门体，其特征在于，还包括：
    冷通道温度传感器，设置于冷通道，用于检测冷通道温度；
    柜外干湿温度传感器，设置于所述机柜外，用于检测所述机柜外温度和所述机柜外湿度；
    柜外压力传感器，设置于所述机柜外，用于检测所述机柜外空气压力；
    控制器，分别与所述冷通道温度传感器、柜外干湿温度传感器、柜外压力传感器和电加热膜连接，用于根据所述机柜外温度、所述机柜外湿度和所述机柜外空气压力确定当前露点温度，根据门体参数、所述机柜外温度和所述冷通道温度确定所述门体的外表面温度，根据所述露点温度和所述外表面温度控制所述电加热膜开启或者关闭。
  6. 如权利要求5所述的门体，其特征在于，所述控制器还用于
    当T og≤T d–d 1时，控制所述电加热膜开启；
    当T og≥T d+d 2时，控制所述电加热膜关闭；
    其中，T og为所述门体的外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
  7. 如权利要求5所述的门体，其特征在于，根据以下公式确定所述门体的外表面温度：
    Figure PCTCN2018093213-appb-100001
    其中，T og为所述门体的外表面温度，T o为机柜外温度，T i为冷通道温度，K为透明门板的综合传热系数，
    Figure PCTCN2018093213-appb-100002
    为透明门板外侧传导系数。
  8. 一种机柜，其特征在于，包括冷通道和如权利要求1～7任一项所述的门体，所述门体与所述冷通道相对。
  9. 一种模块化数据中心，其特征在于，包括冷通道和如权利要求1～7任一项所述的门体，所述门体与所述冷通道相对。
  10. 一种应用于权利要求5所述的门体的防冷凝控制方法，其特征在于，包括：
    获取冷通道温度、机柜外温度、机柜外湿度和机柜外空气压力；
    根据所述机柜外温度、所述机柜外湿度和所述机柜外空气压力确定当前露点温度；根据门体参数、所述机柜外温度和所述冷通道温度确定所述门体的外表面温度；
    根据所述露点温度和所述外表面温度控制电加热膜开启或者关闭。
  11. 如权利要求10所述的控制方法，其特征在于，所述根据所述露点温度和所述外表面温度控制所述电加热膜开启或者关闭包括：
    当T og≤T d–d 1时，控制所述电加热膜开启；
    当T og≥T d+d 2时，控制所述电加热膜关闭；
    其中，T og为所述门体的外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
  12. 如权利要求10所述的控制方法，其特征在于，根据以下公式确定所述门体的外表面温度：
    Figure PCTCN2018093213-appb-100003
    其中，T og为所述门体的外表面温度，T o为机柜外温度，T i为冷通道温度，K为透明门板的综合传热系数，
    Figure PCTCN2018093213-appb-100004
    为透明门板外侧传导系数。
  13. 如权利要求10所述的控制方法，其特征在于，根据所述露点温度和所述外表面温度控制所述电加热膜开启或者关闭包括：
    当T og≤T d–d 1时，控制所述电加热膜开启持续时长t 0；
    在所述电加热膜开启持续时长t 0后，控制所述电加热膜关闭持续时长t 00；
    在所述电加热膜关闭持续时长t 00后，当T og≥T d+d 2时，控制所述电加热膜关闭，当T og＜T d+d 2时，控制所述电加热膜开启持续时长t 0；
    其中，T og为所述门体的外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值，t 0为开启时长，t 00为关闭时长。
  14. 如权利要求13所述的控制方法，其特征在于，所述开启持续时长t 0根据下列函数关系式确定：
    Figure PCTCN2018093213-appb-100005
    其中，
    Figure PCTCN2018093213-appb-100006
    t 1为第一时长，S、k和C 1分别为常数，t max为最长开启时长。
  15. 如权利要求13所述的控制方法，其特征在于，所述关闭持续时长t 00根据下列函数关系式确定：
    Figure PCTCN2018093213-appb-100007
    其中，t 2＝t max-t 1+C 2，t 2为第二时长，C 2为常数，t min为最短关闭时长。
  16. 一种应用于权利要求5所述的门体的防冷凝控制装置，其特征在于，包括：
    获取单元，用于获取冷通道温度、机柜外温度、机柜外湿度和机柜外空气压力；
    确定单元，用于根据所述机柜外温度、所述机柜外湿度和所述机柜外空气压力确定当前露点温度；根据门体参数、所述机柜外温度和所述冷通道温度确定所述门体的外表面温度；
    控制单元，根据所述露点温度和所述外表面温度控制电加热膜开启或者关闭。
  17. 如权利要求16所述控制装置，其特征在于，所述控制单元用于
    当T og≤T d–d 1时，控制所述电加热膜开启；
    当T og≥T d+d 2时，控制所述电加热膜关闭；
    其中，T og为所述门体的外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值。
  18. 如权利要求16所述控制装置，其特征在于，所述控制单元还用于
    当T og≤T d–d 1时，控制所述电加热膜开启持续时长t 0；
    在所述电加热膜开启持续时长t 0后，控制所述电加热膜关闭持续时长t 00；
    在所述电加热膜关闭持续时长t 00后，当T og≥T d+d 2时，控制所述电加热膜关闭，当T og＜T d+d 2时，控制所述电加热膜开启持续时长t 0；
    其中，T og为所述门体的外表面温度，T d为露点温度，d 1为第一设定阈值，d 2为第二设定阈值，t 0为开启时长，t 00为关闭时长。
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