WO2019214298A1 - 用于机房空调的除湿控制方法及机房空调 - Google Patents

用于机房空调的除湿控制方法及机房空调 Download PDF

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WO2019214298A1
WO2019214298A1 PCT/CN2019/073161 CN2019073161W WO2019214298A1 WO 2019214298 A1 WO2019214298 A1 WO 2019214298A1 CN 2019073161 W CN2019073161 W CN 2019073161W WO 2019214298 A1 WO2019214298 A1 WO 2019214298A1
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temperature
air conditioner
room air
dehumidification
control method
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PCT/CN2019/073161
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English (en)
French (fr)
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杨公增
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青岛海尔空调电子有限公司
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Publication of WO2019214298A1 publication Critical patent/WO2019214298A1/zh

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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
    • F24F11/77—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 by controlling the speed of ventilators
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention belongs to the technical field of computer room air conditioners, and particularly provides a dehumidification control method for a computer room air conditioner and a computer room air conditioner.
  • the data room mainly provides stability for communication electronic equipment.
  • the operating environment the most important of which is to maintain the ambient temperature and ambient humidity in the equipment room constant. If the humidity of the air in the equipment room is too high, condensation will occur on the surface of the electronic components. If the electronic components are in a humid environment for a long time, corrosion or short circuit will occur, which will affect the stability of the operation of the whole equipment. Therefore, the equipment room must be The humidity inside is strictly controlled.
  • the air conditioning load of the computer room is mainly sensible heat load, so the design direction of the corresponding air conditioning system of the computer room is high evaporation temperature and high sensible heat ratio, which is specified in GB/T19413-2010.
  • the sensible heat ratio of the air conditioner in the computer room is ⁇ 0.9.
  • the design direction of the high sensible heat ratio of the air conditioner in the computer room is affected by the dehumidification performance. In some areas with high humidity or during the rainy season, the humidity in the equipment room often exceeds that of the electronic equipment. Permitted value, how to quickly meet the demand of high sensible heat ratio cooling, and quickly dehumidification has become a problem that must be considered in the computer room air conditioner.
  • the air conditioner of the computer room there are generally two dehumidification methods for the air conditioner of the computer room.
  • the first one is to dehumidify by changing the area of the heat exchanger.
  • the principle is that the heat exchanger is turned into two parts by the on and off of the electromagnetic valve, and the normal refrigeration is performed.
  • the heat exchanger is running, a part of the heat exchanger is turned off during the dehumidification operation, and then the remaining part of the heat exchanger is used for dehumidification.
  • this dehumidification method increases the design difficulty of the heat exchanger, for example, the size of the heat exchanger is two parts.
  • the setting needs to have sufficient relevant practical experience.
  • different refrigeration systems require a large number of evaluation and verification.
  • the heat exchanger area is not properly set, the heat exchanger will freeze when dehumidifying operation, resulting in dehumidification heat transfer.
  • the air volume of the device is reduced, which in turn makes the dehumidification effect of the whole machine worse.
  • the leakage of the whole machine may occur. Water leakage is a taboo in the equipment room, which may affect the safety of electronic components.
  • the second method is to use dehumidification to reduce the air volume.
  • the principle is to set a low speed gear for dehumidification. Due to the difference in the actual use environment of the equipment room, a single fixed low speed can not guarantee the dehumidification effect well.
  • the air outlet temperature corresponding to the low speed gear position may be greater than the dew point temperature of the room return air.
  • the dehumidification effect is not obtained, and the rotation speed of the low speed gear position is set too low, and the corresponding air volume is attenuated severely, thereby ensuring the maximum dehumidification amount.
  • the present invention provides a dehumidification control for the air conditioner of the computer room.
  • the air conditioner of the computer room comprises an evaporator and a fan.
  • the dehumidification control method comprises: obtaining an outlet temperature of the evaporator; and selectively adjusting the rotation speed of the fan according to the outlet temperature.
  • the step of “selectively adjusting the rotation speed of the fan according to the outlet air temperature” specifically includes: comparing the outlet air temperature with the first preset temperature; and if the outlet air temperature is greater than or equal to the first A preset temperature reduces the speed of the fan.
  • the step of “selectively adjusting the rotation speed of the fan according to the outlet air temperature” further includes: if the outlet air temperature is less than the first preset temperature, continuing to select the outlet air temperature and the second Presetting the temperature; if the outlet temperature is greater than or equal to the second preset temperature, maintaining the speed of the fan; wherein the second preset temperature is less than the first preset temperature.
  • the step of "selectively adjusting the rotation speed of the fan according to the outlet air temperature” further includes: if the outlet air temperature is less than the second preset temperature, increasing the rotation speed of the fan.
  • the dehumidification control method before the step of “acquiring the outlet temperature of the evaporator”, the dehumidification control method further comprises: obtaining an ambient temperature and an ambient humidity; and selectively making the machine room according to the ambient humidity and the ambient temperature.
  • the air conditioner turns on the dehumidification operation.
  • the step of “selectively turning on the air conditioning operation of the computer room air conditioner according to the environmental humidity and the ambient temperature” specifically includes: determining whether the ambient temperature is within a preset temperature range, and determining whether the ambient humidity is It is greater than or equal to the preset humidity; if the ambient temperature is within the preset temperature range and the ambient humidity is greater than or equal to the preset humidity, the computer room air conditioner is turned on to perform the dehumidification operation.
  • the step of "selectively turning on the air conditioning operation of the computer room air conditioner according to the environmental humidity and the ambient temperature” further includes: if the ambient temperature is not within the preset temperature range or the ambient humidity is less than the preset Humidity does not allow the computer room air conditioner to turn on the dehumidification operation.
  • the dehumidification control method further comprises: calculating a dew point temperature of the air according to the ambient humidity and the ambient temperature; and setting the first preset temperature and the second preset temperature according to the dew point temperature of the air.
  • the difference between the first preset temperature and the second preset temperature is 2 degrees Celsius.
  • the present invention also provides a computer room air conditioner including a controller configured to perform the above-described dehumidification control method.
  • the speed of the fan can be adaptively adjusted according to the working condition of the air conditioner of the equipment room, so that The dehumidification operation of the computer room air conditioner can be more flexibly adjusted, so that the dehumidification effect of the computer room air conditioner can be ensured under various working conditions, and the humidity control requirements of each occasion can be met, and the air conditioning of the computer room can be quickly dehumidified, and the application range of the computer room air conditioner can be expanded. user experience.
  • the temperature is divided into three sections by the first preset temperature and the second preset temperature, and when the outlet temperature of the evaporator is greater than or equal to the first preset temperature, the outlet temperature is high at this time, and Appropriately reduce the wind speed of the fan, so that the air output of the fan is reduced, and accordingly, the outlet temperature of the evaporator is lowered; when the outlet temperature of the evaporator is less than the second preset temperature, the outlet temperature is low at this time.
  • the wind speed of the fan can be appropriately increased, so that the air volume of the fan is increased, and the outlet temperature of the evaporator is increased accordingly; the outlet temperature of the evaporator is less than the first preset temperature and greater than or equal to the second preset temperature.
  • the air conditioning of the computer room can be adjusted to the optimal dehumidification operation under any working condition, thereby realizing rapid dehumidification in the space of the machine room and ensuring the dehumidification effect of the air conditioner in the machine room.
  • the first preset temperature and the second preset temperature are set by the dew point temperature of the air, that is, the real-time calculation of the dew point temperature of the air (ie, the dew point temperature at the return air) and the real-time temperature of the outlet air
  • the detection is to perform real-time dynamic adjustment of the fan, thereby further ensuring the dehumidification effect under various working conditions on the basis of ensuring the maximum air volume under various working conditions, thereby realizing rapid dehumidification of the air conditioning unit.
  • the computer room air conditioner further provided by the present invention based on the above-described technical solution adopts the above-described dehumidification control method, and further has the technical effects possessed by the above-described dehumidification control method, and is compared with the dehumidification control method before improvement.
  • the dehumidification control method of the invention neither improves the design difficulty of the heat exchanger, nor does it have the problem that the dehumidification effect of the air conditioner of the equipment room cannot be ensured due to different use occasions, so that the air conditioning of the computer room can ensure the dehumidification effect under various working conditions, and satisfies
  • the humidity control requirements in each occasion can realize the rapid dehumidification of the air conditioner in the computer room, and expand the application range of the air conditioner in the computer room to enhance the user experience.
  • FIG. 1 is a schematic structural view of a computer room air conditioner of the present invention
  • FIG. 2 is a flow chart of the dehumidification control method of the present invention.
  • the terms "head”, “upper”, “inside” and the like indicate the direction or positional relationship based on the direction or positional relationship shown in the drawings, which is merely for convenience. It is to be understood that the invention is not to be construed as a limitation Moreover, the terms “first” and “second” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
  • connection may also be a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • connection may also be a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • the existing computer room air conditioner cannot solve the problem of high sensible heat ratio, and can quickly perform dehumidification.
  • the present invention provides a dehumidification control method for a computer room air conditioner and a computer room air conditioner, aiming at The air conditioner of the computer room can guarantee the dehumidification effect under various working conditions, meet the humidity control requirements of various occasions, realize the rapid dehumidification of the air conditioner of the computer room, and expand the application range of the air conditioner of the computer room to enhance the user experience.
  • the computer room air conditioner of the present invention comprises a casing 1 , and an air inlet temperature and humidity sensor 2 is disposed at a top of the casing 1 , and an evaporator 3 and an air outlet are disposed in the casing 1 from top to bottom.
  • the temperature sensor 4, the compressor 5 and the fan 6, the fan 6 can introduce air in the machine room from the top of the casing 1 into the casing 1 during operation and sequentially pass the inlet air temperature and humidity sensor 2, the evaporator 3 and the outlet air temperature.
  • the sensor 4 finally sends air back to the machine room (the arrow in Fig.
  • the fan 6 is preferably an EC fan, that is, a three-phase AC permanent magnet synchronous fan.
  • a DC fan that is, a DC fan, may also be selected.
  • the inlet air temperature and humidity sensor 2 detects the temperature and humidity of the return air in the equipment room, that is, the ambient temperature and the ambient humidity. If the ambient humidity is greater than or equal to the preset humidity and the ambient temperature is within the preset temperature range, The air conditioning of the computer room is turned on and dehumidified. If the ambient temperature is not within the preset temperature range or the ambient humidity is less than the preset humidity, the air conditioning of the computer room is not turned on.
  • the preset temperature range and the preset humidity may be test values measured by a person skilled in the art during the test, or may be empirical values obtained by a person skilled in the art according to experience. For example, the preset humidity may be humidity.
  • the sum of the set value and the humidity control accuracy value, the preset temperature range may be the temperature formed by the end point (set temperature-temperature control accuracy value -2 degrees Celsius) and (set temperature + temperature control accuracy value + 2 degrees Celsius)
  • the preset temperature range may be the temperature formed by the end point (set temperature-temperature control accuracy value -2 degrees Celsius) and (set temperature + temperature control accuracy value + 2 degrees Celsius)
  • those skilled in the art can flexibly adjust the humidity setting value, the humidity control precision value, the set temperature, and the temperature control precision value in practical applications, thereby obtaining a specific preset temperature range and preset humidity, which is
  • the changes and settings of the preset temperature range and the preset humidity obtaining process and the calculating steps are not deviated from the principles and scope of the present invention, and should be limited to the scope of the present invention.
  • the outlet air temperature sensor 4 detects the air outlet temperature of the evaporator 3 in real time.
  • the dehumidification control method of the present invention comprises: obtaining an outlet air temperature of the evaporator; and selectively adjusting the rotation speed of the fan according to the outlet air temperature.
  • the step of “selectively adjusting the rotation speed of the fan according to the outlet air temperature” specifically includes: comparing the outlet air temperature with the first preset temperature; if the outlet air temperature is greater than or equal to the first pre-predetermined If the temperature is set, the fan speed is reduced; if the air outlet temperature is lower than the first preset temperature, the outlet air temperature is continuously compared with the second preset temperature; if the outlet air temperature is greater than or equal to the second preset temperature, the fan is maintained The rotation speed of the fan is increased if the outlet air temperature is lower than the second preset temperature; wherein the second preset temperature is less than the first preset temperature.
  • the outlet air temperature may be compared with the second preset temperature, and then the outlet air temperature is compared with the first preset temperature, or the outlet air temperature is simultaneously compared with the first preset temperature and the first
  • the two preset temperature comparisons the person skilled in the art can flexibly set the comparison mode and the comparison order of the outlet air temperature in the actual situation, as long as the demarcation point determined by the first preset temperature and the second preset temperature can enable the fan to It can be adjusted accordingly under various working conditions.
  • the first preset temperature and the second preset temperature may be test values measured by a person skilled in the art during the test, and may also be empirical values obtained by a person skilled in the art based on experience, for example, in a possible
  • the first preset temperature and the second preset temperature may be set by a dew point temperature T1 of the air, and the difference between the first preset temperature and the second preset temperature is 2 degrees Celsius, specifically,
  • the outlet temperature of the evaporator is Tc
  • the first preset temperature is Tl-1 degrees Celsius
  • the second preset temperature is Tl-3 degrees Celsius.
  • the outlet temperature Tc gradually decreases; when Tl-3 ⁇ Tc ⁇ Tl-1, the speed of the fan of the computer room air conditioner does not change; when Tc ⁇ Tl-3, the speed of the fan of the computer room air conditioner gradually increases, and the air volume gradually increases.
  • the outlet temperature Tc gradually increases, so that the Tc can be adjusted to the range of Tl-3 ⁇ Tc ⁇ Tl-1 under various working conditions, thereby ensuring the optimal dehumidification amount and realizing the rapid space in the machine room. Dehumidification.
  • the first preset temperature is Tl-1 degrees Celsius
  • the second preset temperature is Tl-3 degrees Celsius
  • the first pre-predetermined it is to be understood that the adjustments and changes of the specific values of the temperature and the second predetermined temperature are not deviated from the principles and the scope of the invention, and are intended to be limited to the scope of the invention.
  • the dew point temperature T1 of the air can be obtained by calculating the ambient temperature and the ambient humidity. Specifically, the dew point temperature T1 of the air can be obtained through the ambient temperature-ambient humidity-dew point temperature comparison table. It can be obtained according to the wetting diagram, that is, the dew point temperature T1 of the air can be obtained by any means in the prior art, and the manner of obtaining the dew point temperature T1 of the air and the change of the calculation formula do not deviate from the principle and scope of the present invention. It should be construed as being within the scope of the invention.

Abstract

本发明属于机房空调技术领域，旨在解决现有机房空调无法在满足高显热比的要求下，又能够快速地进行除湿的问题。为此，本发明提供了一种用于机房空调的除湿控制方法及机房空调，该机房空调包括蒸发器和风机，该除湿控制方法包括：获取蒸发器的出风温度；根据出风温度，选择性地调整风机的转速。本发明通过对机房空调的蒸发器的出风温度进行检测，可以根据机房空调的使用工况对风机的转速进行适应性调节，使机房空调的除湿操作可以更加灵活地调整，从而在各个工况下均能够保证机房空调的除湿效果，满足各个场合湿度的控制要求，实现机房空调的快速除湿，同时拓展机房空调的应用范围，提升用户体验。

Description

用于机房空调的除湿控制方法及机房空调 技术领域
本发明属于机房空调技术领域，具体提供一种用于机房空调的除湿控制方法及机房空调。
背景技术
随着数字化经济的快速发展，数据机房的建设呈井喷式增长，越来越多新的数据机房被建设出来，一些老的数据机房也在被迅速地改造，数据机房主要为通信电子设备提供稳定的运行环境，其中最重要的是维持机房内环境温度和环境湿度保持恒定。如果机房内的空气湿度过高，则会使电子元器件表面产生凝露，电子元器件长期处于潮湿的环境下会发生腐蚀或者短路现象，从而影响整体设备运行的稳定性，因此，必须对机房内的湿度进行严格地控制。此外，由于现有的电子设备机房主要为电子元器件发热，机房空调负荷主要为显热负荷，因而对应机房空调系统的设计方向为高蒸发温度高显热比，国标GB/T19413-2010中规定机房空调的显热比≥0.9，但是，对应机房空调高显热比的设计方向导致其除湿性能受到影响，在某些湿度较大的地域或梅雨季节时间段机房内的湿度往往超出电子设备的许可值，如何快速在满足高显热比降温的需求下，又能快速除湿成为机房空调不得不考虑的一个问题。
现有技术中，机房空调的除湿方式一般有两种，第一种是采用变换换热器面积的方式进行除湿，其原理是通过电磁阀的通断将换热器变成两部分，正常制冷时全换热器运行，除湿运行时关闭一部分换热器，然后采用剩余部分换热器除湿，然而，这种除湿方式会增加换热器的设计难度，例如：对换热器两个部分大小的设置需要有很充足的相关实践经验，同时不同的制冷系统都需要大量的评价验证，如果换热器面积设置得不合适，则容易出现除湿运行时换热器结冰，从而导致除湿换热器部分的风量降低，进而使整机除湿效果变差，而且，在结冰严重的情况下还会发生整机漏水的问题，漏水是机房的大忌，会影响电子元器件运行的安全性，并且空调出风会同时经过除湿换热器和切断的换热器 两部分，其冷热程度不同会使冷热空气混合在空调出风口并因此产生凝露现象，凝露水会随着空调出风进出房间或风道，从而产生整机吹水不良；第二种是采用降风量除湿的方式，其原理是设置一个低速档位进行除湿，由于机房实际使用环境的差异，单独一个固定的低速不能很好地保证除湿效果，当房间湿度降低到一定值后，其低速档位对应的出风温度可能会大于房间回风的露点温度，从而起不到除湿的作用，而且将低速档位的转速设置得过低其对应风量会衰减严重，进而保证不了最大化的除湿量。
因此，本领域需要一种新的用于机房空调的除湿控制方法及机房空调来解决上述问题。
发明内容
为了解决现有技术中的上述问题，即为了解决现有机房空调无法在满足高显热比的要求下，又能够快速地进行除湿的问题，本发明提供了一种用于机房空调的除湿控制方法，该机房空调包括蒸发器和风机，该除湿控制方法包括：获取蒸发器的出风温度；根据出风温度，选择性地调整风机的转速。
在上述除湿控制方法的优选技术方案中，“根据出风温度，选择性地调整风机的转速”的步骤具体包括：将出风温度与第一预设温度比较；如果出风温度大于或等于第一预设温度，则降低风机的转速。
在上述除湿控制方法的优选技术方案中，“根据出风温度，选择性地调整风机的转速”的步骤还包括：如果出风温度小于第一预设温度，则继续将出风温度与第二预设温度比较；如果出风温度大于或等于第二预设温度，则维持风机的转速；其中，第二预设温度小于第一预设温度。
在上述除湿控制方法的优选技术方案中，“根据出风温度，选择性地调整风机的转速”的步骤还包括：如果出风温度小于第二预设温度，则提高风机的转速。
在上述除湿控制方法的优选技术方案中，在“获取蒸发器的出风温度”的步骤之前，除湿控制方法还包括：获取环境温度和环境湿度；根据环境湿度和环境温度，选择性地使机房空调开启除湿操作。
在上述除湿控制方法的优选技术方案中，“根据环境湿度和环境温度，选择性地使机房空调开启除湿操作”的步骤具体包括：判断环境温度是否在预设温度范围内，并且判断环境湿度是否大于或等于预设湿度；如果环境温度在预设温度范围内且环境湿度大于或等于预设湿度，则使机房空调开启除湿操作。
在上述除湿控制方法的优选技术方案中，“根据环境湿度和环境温度，选择性地使机房空调开启除湿操作”的步骤还包括：如果环境温度未在预设温度范围内或环境湿度小于预设湿度，则不使机房空调开启除湿操作。
在上述除湿控制方法的优选技术方案中，除湿控制方法还包括：根据环境湿度和环境温度，计算空气的露点温度；根据空气的露点温度，设定第一预设温度和第二预设温度。
在上述除湿控制方法的优选技术方案中，第一预设温度与第二预设温度的差值为2摄氏度。
在另一方面，本发明还提供了一种机房空调，该机房空调包括控制器，该控制器配置成能够执行上述的除湿控制方法。
本领域技术人员能够理解的是，在本发明的优选技术方案中，通过对机房空调的蒸发器的出风温度进行检测，可以根据机房空调的使用工况对风机的转速进行适应性调节，使机房空调的除湿操作可以更加灵活地调整，从而在各个工况下均能够保证机房空调的除湿效果，满足各个场合湿度的控制要求，实现机房空调的快速除湿，同时拓展机房空调的应用范围，提升用户体验。
进一步地，通过第一预设温度和第二预设温度将温度分成三个区间，在蒸发器的出风温度大于或等于第一预设温度时，说明此时的出风温度偏高，可以适当降低风机的风速，从而使风机的出风量降低，相应地使蒸发器的出风温度降低；在蒸发器的出风温度小于第二预设温度时，说明此时的出风温度偏低，可以适当提高风机的风速，从而使风机的出风量升高，相应地使蒸发器的出风温度升高；在蒸发器的出风温度小于第一预设温度且大于或等于第二预设温度时，说明此时的出风温度合适，可以不用调整风机的风速。通过这样的设置，可以使机房空调 无论在何种工况下，均能够向最佳的除湿操作进行调节，从而实现机房空间内快速地除湿，且保证机房空调的除湿效果。
更进一步地，通过空气的露点温度对第一预设温度和第二预设温度进行设定，即可以通过空气的露点温度(即回风处的露点温度)的实时计算以及出风温度的实时检测来对风机进行实时动态调节，从而在保证各种工况下的最大风量的基础上进一步确保各种工况下的除湿效果，进而实现空调机组的快速除湿。
此外，本发明在上述技术方案的基础上进一步提供的机房空调由于采用了上述的除湿控制方法，进而具备了上述除湿控制方法所具备的技术效果，并且相比于改进前的除湿控制方法，本发明的除湿控制方法既不会提高换热器的设计难度，也不会出现由于使用场合不同而无法保证机房空调除湿效果的问题，使得机房空调在各个工况下均能够保证其除湿效果，满足各个场合湿度的控制要求，实现机房空调的快速除湿，同时拓展机房空调的应用范围，提升用户体验。
附图说明
图1是本发明的机房空调的结构示意图；
图2是本发明的除湿控制方法的流程图。
具体实施方式
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。
需要说明的是，在本发明的描述中，术语“顶”、“上”、“内”等指示的方向或位置关系的术语是基于附图所示的方向或位置关系，这仅仅是为了便于描述，而不是指示或暗示所述装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
此外，还需要说明的是，在本发明的描述中，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”应做广 义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域技术人员而言，可根据具体情况理解上述术语在本发明中的具体含义。
基于背景技术指出的现有机房空调无法在满足高显热比的要求下，又能够快速地进行除湿的问题，本发明提供了一种用于机房空调的除湿控制方法及机房空调，旨在使机房空调在各个工况下均能够保证其除湿效果，满足各个场合湿度的控制要求，实现机房空调的快速除湿，同时拓展机房空调的应用范围，提升用户体验。
具体地，如图1所示，本发明的机房空调包括壳体1，壳体1的顶部设置有进风温湿度传感器2，壳体1内由上至下依次设置有蒸发器3、出风温度传感器4、压缩机5和风机6，风机6能够在运转时将机房内的空气由壳体1的顶部引入壳体1内并依次通过进风温湿度传感器2、蒸发器3和出风温度传感器4，最后将空气送回到机房内(图1箭头所示为空气的流动方向)，进风温湿度传感器2用于检测环境温度和环境湿度(具体为进入蒸发器3之前的空气的温度和湿度)，出风温度传感器4用于检测经过蒸发器3降温、除湿处理后的出风温度。其中，风机6优选为EC风机，即三相交流永磁同步风机，当然，在实际应用中，还可以选用DC风机，即直流风机。
在机房空调运行时，进风温湿度传感器2实时检测机房内回风的温度和湿度，即环境温度和环境湿度，如果环境湿度大于或等于预设湿度且环境温度在预设温度范围内时，则使机房空调开启除湿操作，如果环境温度未在预设温度范围内或环境湿度小于预设湿度，则不使机房空调开启除湿操作。其中，上述的预设温度范围和预设湿度可以是本领域技术人员在试验过程中测得的试验值，也可以为本领域技术人员根据经验获得的经验值，例如，预设湿度可以为湿度设定值和湿度控制精度值之和，预设温度范围可以是端点分别为(设定温度-温度控制精度值-2摄氏度)和(设定温度+温度控制精度值+2摄氏度)构成的温度区间，本领域技术人员可以在实际应用中灵活地对湿度设定值、湿度控制精度值、设定温度以及温度控制精度值进行调整，从而得出具体的预设温度范围和预设湿度，这种对预设温度范围和预设湿度获得过程以及计算步 骤的改变和设定并不偏离本发明的原理和范围，均应限定在本发明的保护范围之内。
在一种优选的实施方式中，当环境湿度≥湿度设定值+湿度控制精度值，并且设定温度-温度控制精度值-2摄氏度≤环境温度≤设定温度+温度控制精度值+2摄氏度时，机房空调开启除湿操作，此时出风温度传感器4实时检测蒸发器3的出风温度。
如图2所示，本发明的除湿控制方法包括：获取蒸发器的出风温度；根据出风温度，选择性地调整风机的转速。在一种优选的实施方式中，“根据出风温度，选择性地调整风机的转速”的步骤具体包括：将出风温度与第一预设温度比较；如果出风温度大于或等于第一预设温度，则降低风机的转速；如果出风温度小于第一预设温度，则继续将出风温度与第二预设温度比较；如果出风温度大于或等于第二预设温度，则维持风机的转速；如果出风温度小于第二预设温度，则提高风机的转速；其中，第二预设温度小于第一预设温度。当然，在实际应用中，还可以先将出风温度与第二预设温度比较，再将出风温度与第一预设温度比较，又或者将出风温度同时与第一预设温度和第二预设温度比较，本领域技术人员可以在实际的情况中灵活地设置出风温度的比较方式和比较顺序，只要通过第一预设温度和第二预设温度确定的分界点能够使风机在各种工况下进行相应地调节即可。此外，第一预设温度和第二预设温度可以是本领域技术人员在试验过程中测得的试验值，也可以为本领域技术人员根据经验获得的经验值，例如，在一种可能的实施方式中，第一预设温度和第二预设温度可以通过空气的露点温度Tl来设定，并且，第一预设温度和第二预设温度的差值为2摄氏度，具体而言，蒸发器的出风温度为Tc，第一预设温度为Tl-1摄氏度，第二预设温度为Tl-3摄氏度，当Tc≥Tl-1时，机房空调的风机的转速逐渐降低，风量逐渐下降，出风温度Tc逐渐降低；当Tl-3≤Tc＜Tl-1时，机房空调的风机的转速不变；当Tc＜Tl-3时，机房空调的风机的转速逐渐升高，风量逐渐升高，出风温度Tc逐渐升高，从而保证Tc在各个工况下都可以调整到Tl-3≤Tc＜Tl-1的范围内，从而保证最佳的除湿量，实现机房空间内的快速除湿。
需要说明的是，上述中，第一预设温度为Tl-1摄氏度，第二预设温度为Tl-3摄氏度仅是示例性的，本领域技术人员可以在实际应用中灵活地调整第一预设温度和第二预设温度的具体数值，只要通过第一预设温度和第二预设温度确定的分界点能够使风机在各种工况下进行相应地调节即可，这种第一预设温度和第二预设温度的具体数值的调整和改变并不偏离本发明的原理和范围，均应限定在本发明的保护范围之内。
此外，还需要说明的是，在上述中，空气的露点温度Tl可以通过环境温度和环境湿度计算获得，具体地，空气的露点温度Tl可以通过环境温度-环境湿度-露点温度对照表获得，也可以根据焓湿图获得，即，空气的露点温度Tl可以通过现有技术中的任何方式获得，这种空气的露点温度Tl获取方式以及计算公式的改变并不偏离本发明的原理和范围，均应限定在本发明的保护范围之内。
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (10)

  1. 一种用于机房空调的除湿控制方法，所述机房空调包括蒸发器和风机，其特征在于，所述除湿控制方法包括：
    获取所述蒸发器的出风温度；
    根据所述出风温度，选择性地调整所述风机的转速。
  2. 根据权利要求1所述的除湿控制方法，其特征在于，“根据所述出风温度，选择性地调整所述风机的转速”的步骤具体包括：
    将所述出风温度与第一预设温度比较；
    如果所述出风温度大于或等于所述第一预设温度，则降低所述风机的转速。
  3. 根据权利要求2所述的除湿控制方法，其特征在于，“根据所述出风温度，选择性地调整所述风机的转速”的步骤还包括：
    如果所述出风温度小于所述第一预设温度，则继续将所述出风温度与第二预设温度比较；
    如果所述出风温度大于或等于所述第二预设温度，则维持所述风机的转速；
    其中，所述第二预设温度小于所述第一预设温度。
  4. 根据权利要求3所述的除湿控制方法，其特征在于，“根据所述出风温度，选择性地调整所述风机的转速”的步骤还包括：
    如果所述出风温度小于所述第二预设温度，则提高所述风机的转速。
  5. 根据权利要求3或4所述的除湿控制方法，其特征在于，在“获取所述蒸发器的出风温度”的步骤之前，所述除湿控制方法还包括：
    获取环境温度和环境湿度；
    根据所述环境湿度和所述环境温度，选择性地使所述机房空调开启除湿操作。
  6. 根据权利要求5所述的除湿控制方法，其特征在于，“根据所述环境湿度和所述环境温度，选择性地使所述机房空调开启除湿操作”的步骤具体包括：
    判断所述环境温度是否在预设温度范围内，并且判断所述环境湿度是否大于或等于预设湿度；
    如果所述环境温度在所述预设温度范围内且所述环境湿度大于或等于所述预设湿度，则使所述机房空调开启除湿操作。
  7. 根据权利要求6所述的除湿控制方法，其特征在于，“根据所述环境湿度和所述环境温度，选择性地使所述机房空调开启除湿操作”的步骤还包括：
    如果所述环境温度未在所述预设温度范围内或所述环境湿度小于所述预设湿度，则不使所述机房空调开启除湿操作。
  8. 根据权利要求5所述的除湿控制方法，其特征在于，所述除湿控制方法还包括：
    根据所述环境湿度和所述环境温度，计算空气的露点温度；
    根据所述空气的露点温度，设定所述第一预设温度和所述第二预设温度。
  9. 根据权利要求8所述的除湿控制方法，其特征在于，所述第一预设温度与所述第二预设温度的差值为2摄氏度。
  10. 一种机房空调，所述机房空调包括控制器，其特征在于，所述控制器配置成能够执行权利要求1至9中任一项所述的除湿控制方法。
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