WO2018218926A1 - Système de climatisation et procédé d'humidification de climatisation - Google Patents

Système de climatisation et procédé d'humidification de climatisation Download PDF

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Publication number
WO2018218926A1
WO2018218926A1 PCT/CN2017/115456 CN2017115456W WO2018218926A1 WO 2018218926 A1 WO2018218926 A1 WO 2018218926A1 CN 2017115456 W CN2017115456 W CN 2017115456W WO 2018218926 A1 WO2018218926 A1 WO 2018218926A1
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Prior art keywords
water
wet film
air conditioning
water tank
conditioning system
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PCT/CN2017/115456
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English (en)
Chinese (zh)
Inventor
於永
席更民
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华为技术有限公司
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Publication of WO2018218926A1 publication Critical patent/WO2018218926A1/fr

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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
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/04—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements
    • 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 relates to the field of air conditioning, and in particular to an air conditioning system and an air conditioning humidification method.
  • the air conditioner in the equipment room needs to accurately control the temperature and humidity of the environment.
  • the air conditioner of the equipment room needs to be equipped with a device for adjusting the humidity to perform the humidification process.
  • the working principle of the electrode type humidifier is that water is used as a conductor, and alternating current is supplied to the two electrodes. After the water contacts the electrode, the electrode forms a current loop through the water, heats the water and boils it, and evaporates the water. The vapor is directly fed into the passage by the blower through the pipeline to achieve air humidification.
  • the two humidification methods generate heat by electricity to generate water vapor, the two humidification methods will bring excessive current influence to the equipment room, thereby increasing the energy consumption of the air conditioner in the computer room.
  • infrared humidification There are two types of humidification schemes available in the market: infrared humidification and electrode humidification.
  • the principle of these two humidification methods is to generate heat by electricity, to vaporize water and increase the humidity of the air supply.
  • the disadvantage of infrared humidification is that the water tray is easy to scale and the humidification efficiency is low.
  • the disadvantage of electrode humidification is that the amount of humidification is affected by the conductivity of water, which requires high water quality and is prone to scale formation in the barrel.
  • both humidification methods will cause excessive current to the equipment room.
  • FIG. 1 it is a schematic structural view of an electrode type humidifier in an existing air conditioning system.
  • Humidification water is placed in the humidification tank 11, and a portion of the humidification electrode 12 is immersed in the humidification water, and the heating power source 13 supplies electric power to the humidification electrode 12.
  • the working principle of the electrode humidifier is that water is used as a conductor, and alternating current is supplied to the two humidifying electrodes 12. After the water contacts the humidifying electrode 12, the humidifying electrode 12 forms a current loop through water, heats the water and boils it, and evaporates. The water vapor is directly sent into the channel by the fan through the pipeline, thereby achieving humidification of the air in the machine room.
  • Embodiments of the present invention provide an air conditioning system and an air conditioning humidification method for improving the amount of humidification of an air conditioning system while preventing a water blowing phenomenon caused by a tilted arrangement of the wet film.
  • a first aspect of the embodiments of the present invention provides an air conditioning system, including: a cabinet, a fan disposed on the cabinet, and a wet film disposed in the cabinet, the wet film being inclined at a predetermined angle with respect to a horizontal plane, the wet The membrane is used to humidify the machine room.
  • the fan When the air conditioning system starts to humidify the equipment room, the fan is used to operate at a speed less than the preset speed threshold for a preset time; when the fan is operated for a preset time, the fan is also used to operate at a speed greater than a preset speed threshold, the fan The airflow generated in the cabinet during operation is used to blow water vapor from the wet film to adjust the humidity of the machine room.
  • the fan generates airflow in the cabinet during operation, so that after the wet film is injected into the water, the airflow blows water vapor from the wet film to adjust the humidity of the machine room.
  • the wet film is tilted at a predetermined angle with respect to the horizontal plane. Under the condition of the height and the occupied area of the cabinet, the wet film of the cabinet is arranged obliquely, and the space inside the cabinet can be fully utilized, so that the wet film disposed obliquely can be set to a larger area, and the airflow generated by the wet film and the fan is generated. There is a larger contact area, which can increase the amount of humidification.
  • the fan runs at a low rotation speed to prevent water from being blown out from the wet film.
  • the fan runs at a low speed for a period of time, the surface of the wet film becomes wet, the affinity of the wet film and water is improved, and the fan runs at a high rotational speed, at which time the water on the wet film is not easily blown out from the wet film.
  • the principle of humidification of the wet film is that when the airflow flows through the wet film on the surface, the airflow blows out the water vapor from the wet film, so that the humidified airflow is sent into the space of the machine room by the fan to adjust the humidity of the machine room.
  • the air conditioning system and the air conditioning humidification method according to the embodiment of the present invention use humid film humidification to reduce the dependence on current during humidification, and are a humidification method with less power consumption, thereby achieving energy saving and humidification.
  • the water is blown out of the wet film by the airflow, which may cause damage to the components of the unit and is a phenomenon that needs to be avoided.
  • the air conditioning system begins to humidify, the surface of the wet film is dry, the affinity of the wet film and water is small, and the fan operates at a small rotational speed, so that the flow rate of the airflow generated by the fan is small, thereby preventing the airflow generated by the fan from being wet. Blow water on the membrane. After the fan runs for a preset time, the fan speed is increased, and the airflow rate generated by the fan is increased.
  • the surface of the wet film is wet, the affinity of the wet film and water is large, and the humidification water on the wet film is not easily taken by the airflow from the wet film. Blowing out, and the larger airflow increases the amount of humidification, which satisfies the adjustment requirements of the air conditioning system to the humidity of the equipment room.
  • the wet film is inclined at a predetermined angle from 60 degrees to 90 degrees with respect to a horizontal plane.
  • the preset angle ranges from 60 degrees to 90 degrees, which prevents the water on the wet film from flowing out of the wet film due to the excessive tilt of the wet film, thus maintaining the safe operation of the unit.
  • the air conditioning system further includes a heat exchanger, and the heat exchanger is disposed obliquely with respect to a horizontal plane in the cabinet, thereby improving The heat exchange capacity of the heat exchanger, the wet film is laid on the surface of the heat exchanger or arranged in parallel with the heat exchanger.
  • the wet film is arranged in the same inclination as the heat exchanger, and the contact area of the wet film and the gas flow can be increased, so that the humidification amount of the wet film can be increased.
  • the air conditioning system further includes a water pump and a water tank, wherein the water tank is disposed in the cabinet, and the water tank is located below the wet film.
  • the water pump is used to inject water extracted from the water tank into the wet film so that water flows from the upper end of the wet film to the lower end of the wet film.
  • Water tank for collecting from wet Water flowing down the membrane. The water is pumped from the water tank by the water pump to inject water into the wet film, and the water used for humidification under the wet film is collected by the water tank, so that the water used for humidification can be recycled, and waste of water resources can be avoided.
  • the air conditioning system further includes a liquid level sensor and a water injection valve.
  • the liquid level sensor is used to determine whether the water level in the water tank reaches a preset water level. If the water level in the water tank reaches the preset water level, the water pump starts; if the water level in the water tank does not reach the preset water level, the water injection valve is used to fill the water tank until the water level in the water tank reaches the preset water level.
  • the liquid level sensor is also used to determine whether the water level in the water tank is within a preset water level range.
  • the water injection valve When the water level in the water tank is not within the preset water level range, the water injection valve is used to fill the water tank to maintain the water level in the water tank within the preset water level range. In this way, before starting the water pump and when the water pump is running, the water level in the water tank is detected by the liquid level sensor. If the water level in the water tank is too low and does not meet the requirements, the water injection valve is controlled to fill the water tank, thus preventing the water level in the water tank. Pump seal phenomenon caused by too low.
  • the preset time is positively correlated with the volume of the water tank, and is negatively correlated with the flow rate of the water injection valve. , positively correlated with the wet film area and negatively correlated with the sine of the angle between the wet film and the horizontal plane. Determining the accurate preset time according to the foregoing parameters can make the preset time of the fan running at a low speed reasonable, avoiding the preset time being too long, and is not conducive to rapid humidification of the machine room, and avoiding the preset time being too short, resulting in The fan operates at a higher speed when the affinity of the wet film and water is small.
  • the air conditioning system further includes a heat exchanger, a water tank, and a water pump.
  • the heater and water tank are located in the cabinet, and the water tank is located below the heat exchanger and the wet film.
  • the water pump is used to inject water extracted from the water tank into the wet film so that water flows from the upper end of the wet film to the lower end of the wet film.
  • the tank is used to collect water from the wet film and condensate from the heat exchanger.
  • the water tank is located below the heat exchanger and the wet film.
  • the condensed water generated by the heat exchanger flows into the water tank, and the water used for humidification under the wet film also flows into the water tank, and the water pump extracts the water in the water tank.
  • Water is injected into the wet film to provide water for humidification of the wet film.
  • This arrangement utilizes condensed water, which also allows the water used by the wet film to be recycled, thereby reducing waste of water resources.
  • the wet film is tiled on the surface of the heat exchanger.
  • the wet film is tiled on the surface of the heat exchanger to make the components in the cabinet more compact and reduce the space occupied by the cabinet.
  • the air conditioning system further includes a water receiving tray.
  • the water receiving tray is disposed below the wet film and the heat exchanger, and the water receiving tray is disposed above the water tank.
  • the water tray is used to collect water from the wet film and condensate from the heat exchanger, so that the water tank is also used to collect water flowing from the water tray. In this way, the water and condensed water used for humidification can be more conveniently collected through the setting of the water receiving tray, and the water tank is more freely arranged in the cabinet.
  • the number of the water receiving tray and the heat exchanger is at least two, different
  • the water tray is used to collect condensate from different heat exchangers.
  • the water collected in different water trays flows into the same water tank through the pipelines, and the pipelines are respectively connected to different water trays, and the pipelines are also connected to the water tanks.
  • multiple heaters can be connected when multiple heat exchangers are installed in the cabinet.
  • the water tray can conveniently collect the condensed water of the plurality of heat exchangers, thereby reducing the waste of water resources.
  • a second aspect of the embodiments of the present invention provides an air conditioning humidification method.
  • the air conditioning humidification method is used in an air conditioning system, and the air conditioning system includes: a cabinet, a fan disposed on the cabinet, and a wet film disposed in the cabinet, the wet film is opposite The water is tilted at a preset angle and the wet film is used to humidify the machine room.
  • the air conditioning humidification method comprises: injecting water into the wet film, and then, when the air conditioning system starts to humidify the equipment room, controlling the fan to operate at a speed less than a preset speed threshold for a preset time; when the fan is operated for a preset time, the control The fan is operated at a speed greater than a preset speed threshold to control the operation of the fan, so that the airflow is generated in the cabinet after the fan is operated, and the airflow blows water vapor from the wet film of the injected water to adjust the humidity of the machine room.
  • the principle of humidification of the wet film is that when the airflow flows through the wet film on the surface, the airflow blows out the water vapor from the wet film, so that the humidified airflow is sent into the space of the machine room by the fan to adjust the humidity of the machine room.
  • the air conditioning system and the air conditioning humidification method according to the embodiment of the present invention use humid film humidification to reduce the dependence on current during humidification, and are a humidification method with less power consumption, thereby achieving energy saving and humidification.
  • the water is blown out of the wet film by the airflow, which may cause damage to the components of the unit, which is a phenomenon that needs to be avoided.
  • the air conditioning system begins to humidify, the surface of the wet film is dry, the affinity of the wet film and water is small, and the fan operates at a small rotational speed, so that the flow rate of the airflow generated by the fan is small, thereby preventing the airflow generated by the fan from being wet. Blow water on the membrane. After the fan runs for a preset time, the fan speed is increased, and the airflow rate generated by the fan is increased.
  • the surface of the wet film is wet, the affinity of the wet film and water is large, and the humidification water on the wet film is not easily taken by the airflow from the wet film. Blowing out, and the larger airflow increases the amount of humidification, which satisfies the adjustment requirements of the air conditioning system to the humidity of the equipment room.
  • the predetermined angle at which the wet film is inclined with respect to the horizontal plane is between 60 degrees and 90 degrees.
  • the preset angle ranges from 60 degrees to 90 degrees, which prevents the water on the wet film from flowing out of the wet film due to the excessive tilt of the wet film, thus maintaining the safe operation of the unit.
  • the air conditioning system further includes a heat exchanger, the heat exchanger is disposed obliquely with respect to a horizontal plane in the cabinet, and the wet film is flat. Spread on the surface of the heat exchanger or in parallel with the heat exchanger.
  • the wet film is arranged in the same inclination as the heat exchanger, and the contact area of the wet film and the gas flow can be increased, so that the humidification amount of the wet film can be increased.
  • the air conditioning system further includes a water pump and a water tank, wherein the water tank is disposed in the cabinet, and the water tank is located below the wet film.
  • the injecting water into the wet film comprises: starting the water pump when detecting that the machine room is to be humidified, and then pumping water from the water tank through the water pump to inject the wet film, so that the water flows from the upper end of the wet film to the lower end of the wet film, and then flows into the water tank. .
  • water is pumped from the water tank by the water pump to inject water into the wet film, and the water used for humidification under the wet film is collected by the water tank, so that the water used for humidification can be recycled, and waste of water resources can be avoided.
  • the air conditioning system further includes a liquid level sensor and a water injection valve. Therefore, before starting the water pump, the method further comprises: determining, by the liquid level sensor, whether the water level in the water tank reaches a preset water level. If the water level in the water tank reaches the preset water level, start the water pump; if the water level in the water tank does not reach the preset water level, open the water injection valve to fill the water tank until the water level in the water tank reaches the preset water level; When the water in the water tank is injected into the wet film, the method further comprises: determining, by the liquid level sensor, whether the water level in the water tank is within a preset water level range.
  • the water injection valve When the water level in the water tank is not within the preset water level range, the water injection valve is opened to fill the water tank to maintain the water level in the water tank within the preset water level range. In this way, at startup Before the pump and when the pump is running, the water level in the water tank is detected by the liquid level sensor. If the water level in the water tank is too low and does not meet the requirements, the water injection valve is controlled to fill the water tank, thus preventing the water level in the water tank from being too low. The pump is sealed.
  • the preset time is positively correlated with the volume of the water tank, and is negatively correlated with the flow rate of the water injection valve. , positively correlated with the wet film area and negatively correlated with the sine of the angle between the wet film and the horizontal plane. Determining the accurate preset time according to the foregoing parameters can make the preset time of the fan running at a low speed reasonable, avoiding the preset time being too long, and is not conducive to rapid humidification of the machine room, and avoiding the preset time being too short, resulting in The fan operates at a higher speed when the affinity of the wet film and water is small.
  • the air conditioning system includes: a cabinet, a fan disposed on the cabinet, a wet film disposed in the cabinet, a wet film inclined at a predetermined angle with respect to a horizontal plane, and a wet film for humidifying the machine room.
  • the fan When the air conditioning system starts to humidify the equipment room, the fan is used to operate at a speed less than the preset speed threshold for a preset time; when the fan is operated for a preset time, the fan is also used to operate at a speed greater than a preset speed threshold, wherein The airflow generated in the cabinet during operation of the fan is used to blow water vapor from the wet film to adjust the humidity of the machine room.
  • the principle of humidification of the wet film is that when the airflow flows through the wet film on the surface, the airflow blows out the water vapor from the wet film, so that the humidified airflow is sent into the space of the machine room by the fan to adjust the humidity of the machine room.
  • the air conditioning system and the air conditioning humidification method according to the embodiments of the present invention reduce the dependence on current during humidification by using wet film humidification, thereby realizing energy saving and humidification.
  • the wet film is tilted at a preset angle with respect to the horizontal plane, which improves the contact area between the wet film and the airflow in the cabinet, thereby increasing the amount of humidification, but the wet film is easily blown after being tilted, so that when the air conditioning system starts to humidify the machine room
  • the fan first runs at a speed less than the preset speed threshold. After the fan runs for a period of time, the surface of the wet film is wet. At this time, the affinity of the wet film and water is large, and the water on the wet film is not easily blown out by the airflow from the wet film.
  • the fan can be operated at a high speed to improve the airflow and humidification generated by the air conditioning system, and the air conditioning system can meet the requirements for adjusting the humidity of the engine room, and the airflow generated by the fan is prevented from being blown out from the wet film when the wet film is tilted. liquid.
  • FIG. 1 is a schematic structural view of an electrode type humidifier in a conventional air conditioning system
  • FIG. 2 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an air conditioning system according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an air conditioning system according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an air conditioning system according to another embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for humidifying an air conditioner according to another embodiment of the present invention.
  • FIG. 7 is a flowchart of a method for humidifying an air conditioner according to another embodiment of the present invention.
  • Fig. 8 is a flow chart showing a method of another representation of the air conditioning humidification method shown in Fig. 7.
  • the embodiment of the invention provides an air conditioning system and an air conditioning humidification method for realizing energy saving and humidification of the equipment room, and improving the humidification amount of the air conditioning system, and preventing the water blowing phenomenon caused by the inclined arrangement of the wet film.
  • the air conditioner in the computer room needs to accurately control the temperature and humidity of the environment.
  • the air conditioner is equipped with a device for adjusting humidity.
  • the embodiment of the invention provides an air conditioning system and an air conditioning humidification method, which are mainly used for solving the problems of large current and large energy consumption caused by infrared humidification and electrode humidification methods in the humidification of the existing computer room air conditioner, and realizing energy saving and humidification.
  • the core of solving the above problems is to use wet film humidification in the computer room air conditioner.
  • wet film humidification By humidifying the wet film, the dependence on the current when the air conditioner is humidified can be reduced.
  • the humidification principle of wet film humidification is to let the dry air flow flow through the wet film on the surface, and the humid air flow is sent into the space of the machine room by the fan, thereby adjusting the humidity of the machine room.
  • Embodiments of the present invention provide an air conditioning system including: a cabinet, a fan disposed on the cabinet, and a wet film disposed in the cabinet, the wet film being used for humidifying the equipment room.
  • a fan When the fan is running, airflow is generated in the cabinet, so that after the wet film is injected into the water, the airflow blows water vapor from the wet film to adjust the humidity of the machine room.
  • the principle of humidification of the wet film is that when the airflow flows through the wet film on the surface, the airflow blows out the water vapor from the wet film, so that the humidified airflow is sent into the space of the machine room by the fan to adjust the humidity of the machine room.
  • the air conditioning system and the air conditioning humidification method of the embodiment of the present invention reduce the dependence on current when humidifying due to the use of wet film humidification, and the power consumption is small.
  • the humidification method achieves energy saving and humidification.
  • the room-level air conditioner has its own characteristics, the application of the wet film in the computer room air conditioner will encounter the following difficulties, or the application of the wet film should be matched with the following characteristics of the computer room air conditioner:
  • the humidification amount of wet film humidification is mainly affected by the air flow rate flowing through it. To increase the humidification amount, the air flow rate must be increased.
  • Room-level air conditioners generally use a gravity self-draining scheme, which requires a reasonable design of the drainage scheme.
  • the optimal arrangement of the wet film is to tiling the surface of the heat exchanger.
  • the wet film is arranged obliquely, the affinity of the wet film and water is not enough, and it is easy to be blown out of the wet film by the wind. In severe cases, the water will fly out of the unit with the wind and endanger the safety of the server.
  • the embodiment of the present invention further provides an air conditioning system for solving the above difficulties, so that the wet film can be better applied to the computer room air conditioner.
  • the first aspect is to prevent the airflow from blowing water from the wet film, and further to make the wet film tiltable with respect to the horizontal plane by a predetermined angle, for example, the inclination angle of the wet film can be Between 45-90 °.
  • the second aspect is to improve the air conditioning water tank of the computer room, combine the self-drainage design commonly used in room-level chilled water with the wet film circulating water, and recycle the condensed water to reduce the energy consumption of humidification under certain conditions.
  • the energy consumption of the air conditioning system of the embodiment of the present invention is reduced by more than 95%.
  • FIG. 2 and FIG. 3 two schematic structural views of an air conditioning system according to an embodiment of the present invention are respectively shown.
  • the air conditioning system shown in Figures 2 and 3 includes both of the above improvements.
  • the air conditioning system of the embodiment of the present invention may use the improvement of the two aspects at the same time, and may also use only one of the improvement schemes, which is not specifically limited in the embodiment of the present invention.
  • an air conditioning system includes: a cabinet 2, a fan 3 disposed on the cabinet 2, and a heat exchanger 4 and a humidifying assembly disposed in the cabinet 2, wherein the humidifying component includes a wet film 51.
  • the humidifying component includes a wet film 51.
  • the lower direction coincides with the upper and lower directions of the drawing itself, and the direction from the top to the bottom may be in the direction of gravity.
  • the fan 3 and the heat exchanger 4 may be arranged up and down, which may be the fan 3 on top, as shown in FIG. 3; or the heat exchanger 4 may be on, as shown in FIG.
  • the fan 3 of FIG. 2 is a lower air supply room-level air conditioning structure
  • the fan 3 of FIG. 3 is an upper air supply room-level air conditioning structure.
  • the fan 3 can be fixedly disposed on the cabinet 2 by welding, riveting, etc., and the fan 3 can also be connected to the cabinet 2 through a structure such as a rack.
  • the fan 3 is detachably connected to the rack 2 and disposed in the rack 2 Inside, the rack is fixedly connected to the cabinet.
  • the heat exchangers 4 in the single air conditioning system may be arranged in an I-shaped or vertical arrangement.
  • the heat exchangers 4 may include one or more heat exchangers 4 in the cabinet 2 of the air conditioning system, which is not specifically limited in the embodiment of the present invention.
  • the working principle of the heat exchanger 4 is: the heat exchanger 4 has a refrigerant flow lower than the ambient temperature. When the high temperature air flows through the surface of the heat exchanger 4, the heat is taken away by the refrigerant, and the temperature of the outflow air is lowered. .
  • An effective means is to increase the heat exchange area; T out is the air outlet temperature; T in is the air inlet temperature.
  • the heat exchanger 4 is generally used according to the principle that the oblique side of the triangle is larger than the straight side. It is arranged obliquely, ie the heat exchanger 4 is arranged obliquely within the cabinet 2 with respect to the horizontal. For example, the angle of the heat exchanger 4 to the horizontal plane is in the range of 60-90.
  • One of the effective means for increasing the amount of humidification may also be to increase the contact area of the air and the wet film 51. Therefore, in order to increase the area, the wet film 51 is inclined at a predetermined angle with respect to the horizontal plane.
  • the preset angle can be set according to the specific air conditioning system structure, or can be set according to the needs of the staff. For example, the predetermined angle at which the wet film 51 is inclined with respect to the horizontal plane is between 60 degrees and 90 degrees.
  • the wet film of the cabinet is arranged obliquely, and the space inside the cabinet can be fully utilized, so that the wet film disposed obliquely can be set to a larger area, and the airflow generated by the wet film and the fan is generated.
  • the preset angle ranges from 60 degrees to 90 degrees, which prevents the water on the wet film from flowing out of the wet film due to the excessive tilt of the wet film, thus maintaining the safe operation of the unit.
  • the wet film 51 can be laid on the surface of the heat exchanger 4.
  • the wet film 51 can be disposed in parallel with the heat exchanger 4. 2 and FIG. 3, the wet film 51 is attached to the surface of the heat exchanger 4.
  • the wet film 51 may be upstream of the heat exchanger 4 as shown in FIG. 2; or the wet film 51 may be heat exchanged. Downstream of the device 4.
  • the so-called upstream and downstream are based on the flow direction of the wind inside the cabinet. Referring to FIG. 2, when the fan 3 is started, the fan 3 generates airflow in the cabinet 2, because the fan 3 of FIG.
  • the airflow generated by the fan 3 in the cabinet 2 flows from the top to the bottom.
  • the airflow also flows through the surface of the heat exchanger 4, and part of the heat of the airflow is exchanged
  • the refrigerant of the device 4 is taken away, so that the gas stream is lowered from a high temperature, that is, the temperature of the gas stream is lowered.
  • the airflow with increased humidity and reduced temperature flows out of the cabinet 2 and enters the equipment room, thereby increasing the humidity of the equipment room and lowering the temperature of the equipment room.
  • the air flow may blow out the water on the wet film 51, thereby jeopardizing the unit.
  • the fan 3 is also used to rotate at a speed less than a preset speed threshold. Pre-set time After the fan 3 is operated for a preset time, the fan 3 is also used to operate at a speed greater than a preset speed threshold.
  • the water tank 52 of the humidifying unit is disposed in the cabinet 2, and the water tank 52 is located below the wet film 51.
  • there is a partition 57 inside the water tank 52 the partition 57 having a height lower than the edge of the tank, the partition 57 dividing the water tank 52 into a circulation side and a drainage side, when the water level in the water tank 52 is higher than the At the time of the partition 57, the water overflows to the other side and flows out from the drain port 58 on the side.
  • the position of the drain port 58 may be anywhere below the wall surface of the overflow partition 57.
  • FIG. 4 shows an air conditioning system including two water receiving trays 53 according to an embodiment of the present invention. Schematic diagram of the structure.
  • the water pump 54 draws water from the circulation side of the water tank 52, pumps it into the water separator 59 of the wet film, and then the water flows down the surface of the wet film 51, enters the water receiving tray 53, and then flows into the water tank 52. Therefore, the water in the water tank 52 is injected into the wet film 51 by the water pump 54, and can flow into the water tank 52 again, so that the water in the water tank 52 can be recycled.
  • the liquid level sensor 55 can detect the water level in the water tank 52.
  • the water injection valve 56 can inject water into the water tank 52.
  • the level sensor 55 and the water filling valve 56 may be disposed on the cabinet 2.
  • the water injection valve 56 may be a solenoid valve or a mechanical valve.
  • the water suction ports of the water injection valve 56, the liquid level sensor 55, and the water pump 54 described above are connected to the circulation side of the water tank 52. It is ensured that the circulation side of the water tank 52 is a normal water supply to the wet film.
  • the air conditioning system of the embodiment of the present invention may have various specific structural forms, for example, a structure including a heat exchanger 4 in the cabinet 2 as shown in FIG. 2; the cabinet 2 shown in FIG.
  • the structure of the two heat exchangers 4, the two heat exchangers 4 are spliced in a " ⁇ " shape, at which time the fan 3 is blown downward, the wet film 51 is arranged upstream of the heat exchanger 4; the cabinet 2 includes two
  • the structure of the heat exchanger can also be as shown in Fig.
  • the air conditioning system may include only one water receiving tray 53 for collecting the condensed water flowing from the two heat exchangers 4 and the humidifying water flowing down the wet film 51.
  • the arrangement of the heat exchangers 4 of Figures 3 and 4 is advantageous for increasing the heat exchange area and making the cooling capacity larger in a limited space.
  • the air conditioning system may also be in the form of a structure as shown in FIG. 5, and the two air conditioning systems are associated.
  • the electrode humidification and infrared humidification used in the room-level air-conditioning field have the disadvantages of large current, easy scaling, high water quality requirements, and all rely on electric heating of water to evaporate water and consume large energy.
  • the air conditioning system provided by the embodiment of the invention applies a wet film, and humidifies the wet film in the air passage, thereby greatly improving the energy saving effect of the air conditioner.
  • the wet film humidification consumes only one water pump, and the energy consumption can be reduced by 95% or more. That is, the air conditioning system of the embodiment of the invention solves the problem of large current caused by the conventional humidification to the equipment room.
  • the air conditioning system of the embodiment of the invention can solve the problem that the wet film is easy to blow water, and in particular, solves the problem that the wet film is easy to blow water when placed obliquely. And recycling condensed water to achieve low energy consumption, energy saving and environmental protection.
  • the solution to the problem of recycling the condensed water when the wet film is easy to blow water and applying the wet film is described in detail below.
  • the air conditioning system shown in Figures 2 and 3 includes both of the improvements described above, including a solution to the problem of easy blowing of the wet film and recycling of the condensed water when applying the wet film, in order to Better to make a better explanation,
  • the air conditioning system of the embodiment of the present invention will be described below based on the structures shown in Figs. 2 and 3, respectively, from different points of improvement.
  • the air conditioning system includes a cabinet 2, a fan 3 disposed on the cabinet 2, and a wet film 51 disposed in the cabinet 2 for humidifying the equipment room.
  • the fan 3 generates an air flow in the cabinet 2 during operation. After the wet film 51 injects water, the airflow generated by the fan 3 blows water vapor from the wet film 51, thereby adjusting the humidity of the machine room.
  • the humidification water on the wet film 51 is subjected to gravity and flows from the top to the bottom on the wet film 51.
  • the wet film 51 is placed vertically.
  • the humidification water on the wet film 51 is vaporized into vapor into the dry air, thereby adjusting the humidity of the air.
  • the air volume of the air conditioner in the computer room is very large.
  • the water is not taken out of the wet film and is sent out to the cabinet space in the form of droplets, which is extremely harmful to the unit.
  • the embodiments of the present invention provide a solution to solve the problem of wet film blowing.
  • the fan 3 When the air conditioning system starts to humidify the equipment room, the fan 3 is further configured to operate at a preset speed within a preset time than the preset speed threshold; when the fan 3 is operated for a preset time, the fan is further used to be greater than the preset speed threshold. Speed running.
  • the fan 3 is operated at a lower rotation speed, so that the wind speed of the airflow generated by the fan 3 in the cabinet 2 is small, As for water, the water is blown out from the wet film 51 in the form of droplets.
  • the wet film 51 is already wet at this time, and the affinity of the water and the wet film is large, and the rotation speed of the fan 3 can be increased to meet the requirements of the room for the humidification amount.
  • the affinity of the water and the wet film is large, water is not blown out from the wet film in the form of droplets, thereby protecting the unit.
  • factors affecting the affinity of water and wet film include whether the surface of the wet film is dry or wet, and the direction of the force of the water on the surface of the wet film. Therefore, when the wet film 51 is inclined at a predetermined angle with respect to the horizontal plane, since the gravity direction of the water on the wet film 51 has an angle with the wet film 51, the affinity of the water and the wet film 51 is less, and it is more easily blown out by the wind. The wet film 51 and the water on the wet film 51 fly out of the unit with the wind, which will endanger the safety of the server and the like. At this time, the above-mentioned scheme of operating the fan speed in a graded manner is particularly effective for avoiding the phenomenon of wet film blowing.
  • the determination of the preset speed threshold and the preset time can be obtained based on the experimental results.
  • the wet film 51 is inclined at a predetermined angle with respect to the horizontal plane, and has the beneficial effect of enabling the machine room to achieve the required amount of humidification more quickly, wherein the humidification amount refers to the weight of water taken away by the air per unit time.
  • Effective methods of increasing the amount of humidification include increasing the wet film area and increasing the wind speed through the wet film. Increasing the wet film area is easy to achieve, and after the wet film 51 is inclined at a predetermined angle, the contact area of the air and the wet film 51 can be increased, so that the demand for increasing the humidification amount can be achieved.
  • the application of the wet film 51 is to match the characteristics 1 and 2 of the room air conditioner, because the heat exchanger 4 is also inclined to increase the amount of heat exchange, and in some embodiments of the present invention, the maximum area of the wet film 51 is also That is, the same as the heat exchanger 4, that is, the wet film is laid on the heat exchanger, so that the optimal arrangement of the wet film 51 is also laid on the surface of the heat exchanger 4, of course, there are also embodiments in which the wet film 51 and The heat exchangers 4 are arranged in parallel, which also achieves the effect of increasing the contact area of the wet film with the gas flow, without necessarily tilging the wet film on the heat exchanger 4.
  • the heat exchanger is disposed obliquely with respect to the horizontal plane in the cabinet 2, and the wet film 51 is laid on the surface of the heat exchanger 4 or The heat exchangers 4 are arranged in parallel.
  • the heat exchanger 4 in order to increase the cooling capacity of the air conditioner, the heat exchanger 4 is generally arranged obliquely, and the humidification amount of the wet film 51 also needs to be increased by increasing the air volume. Therefore, the wet film 51 needs to be arranged in parallel with the heat exchanger 4, but in this arrangement, the water on the surface of the wet film 51 is easily blown out by the wind entrainment when the humidification is started.
  • the air conditioning system of the embodiment of the present invention can control the air conditioning system to operate normally when the wet film is tilted by the two-stage control of the rotational speed of the fan 3.
  • the wet film 51 can be successfully applied at 60-90. Within the tilt range, the phenomenon of blowing water from the wet film is avoided.
  • a humidification water injection valve is disposed above the wet film, and the humidification water injection valve is opened to achieve water injection into the wet film.
  • the water used for humidifying the wet film can be recycled.
  • the embodiments of the present invention also provide the following wet film water injection scheme:
  • a water pump 54 and a water tank 52 are provided for the air conditioning system, wherein the water tank 52 is disposed in the cabinet 2, and the water tank 52 is located below the wet film 51, as specifically seen in FIGS. 2 and 3.
  • the water pump 54 is for injecting water extracted from the water tank 52 into the wet film 51 so that water flows from the upper end of the wet film 51 to the lower end of the wet film 51.
  • the water tank 52 is for collecting water flowing down from the wet film 51.
  • the air conditioning system further includes a level sensor 55 and a water injection valve 56.
  • the liquid level sensor 55 is configured to determine whether the water level in the water tank reaches a preset water level. If the water level in the water tank reaches the preset water level, the water pump 54 is activated; if the water level in the water tank does not reach the preset water level, the water injection valve 56 is used to fill the water tank 52 until the water level in the water tank 52 reaches the preset water level.
  • the liquid level sensor 55 is also used to determine whether the water level in the water tank 52 is within a preset water level range.
  • the water injection valve 56 is used to fill the water tank 52 to maintain the water level in the water tank 52 within a preset water level range.
  • the fan in the arrangement in which the air conditioning system includes the water tank 52, the water injection valve 56, and the wet film 51, the fan is also used to preset at a speed less than a preset speed threshold.
  • the preset time setting in the "time operation" may be: positively correlated with the volume of the water tank 52, negatively correlated with the flow rate of the water injection valve 56, positively correlated with the area of the wet film 51, and sinusoidal with the angle between the wet film 51 and the horizontal plane The value is negatively correlated. It can be understood that in the solution in which the water tank 52 is provided with the partition 57, the volume of the water tank 52 refers to the volume on the circulation side of the water tank 52.
  • the low speed running duration T of the blower 3 is a function of the tank volume V, the water injection solenoid valve flow Q valve , the wet membrane area A, and the angle ⁇ between the wet film and the horizontal plane, wherein k 1 and k 2 are constants, which can be used to adjust the calculation result. more acurrate.
  • Accurately determining the preset time according to these parameters can make the preset time of the fan 3 running at a low speed more reasonable, avoiding the preset time being too long, which is not conducive to rapid humidification of the equipment room; and avoiding the preset time being too short , which causes the fan to run at a higher speed when the affinity of the wet film and water is small.
  • the air conditioning system includes: a cabinet 2, a fan 3 disposed on the cabinet 2, and a wet film 51 disposed in the cabinet 2, wherein the fan 3 is generated in the cabinet 2 during operation After the air flow so that the wet film 51 is injected into the water, the air flow blows water vapor from the wet film 51 to adjust the humidity of the machine room.
  • gravity self-draining schemes are generally used to discharge the condensate from the heat exchangers out of the cabinet. This process of draining water out of the cabinet is completely drained by gravity.
  • the self-draining scheme and the circulating water scheme can be combined to further reduce the waste of water resources and make the components in the cabinet more compact to fully utilize the cabinet space.
  • the air conditioning system further includes a heat exchanger 4, a water tank 52, and a water pump 54, wherein the heat exchanger 4 and the water tank 52 are disposed in the cabinet 2, and the water tank 52 is located in the heat exchanger 4 and Below the wet film 51.
  • the water pump 54 is for injecting water extracted from the water tank 52 into the wet film 51 so that water flows from the upper end of the wet film 51 to the lower end of the wet film 51.
  • the water tank 52 is for collecting water flowing from the wet film 51 and condensed water generated by the heat exchanger 4.
  • the surface of the heat exchanger 4 generates condensed water, which flows down from the heat exchanger 4 under gravity and flows into the water tank 52 to be collected by the water tank 52.
  • the water pump 54 extracts the water for humidification from the water tank 52, and injects the water into the wet film 51, and the water used for humidification flows from the upper end of the wet film 51 to the lower end of the wet film under the action of gravity.
  • the airflow generated by the fan 3 in the cabinet 2 blows water vapor from the wet film 51, and the airflow carries water vapor to supply air to the equipment room, thereby adjusting the humidity of the equipment room.
  • the water flowing down from the wet film 51 flows into the water tank 52, is collected by the water tank 52, and is used to be pumped into the wet film 51 by the water pump 54. Thereby, the recycling of water to the water tank is achieved.
  • the water in the water tank 52 includes condensed water, that is, the condensed water generated by the heat exchanger 4 can be used for humidifying the wet film 51, and the water in the water tank 52 can also include water injected through the water injection valve 56 or water added by a worker or the like.
  • the water used for humidifying the wet film 51 is recycled by the arrangement of the wet film 51, the water tank 52, and the water pump 54, to reduce waste of water resources, and in addition, the heat exchanger can be received through the water tank 52 by the above arrangement.
  • the wet film 51 is laid flat on the surface of the heat exchanger 4.
  • the wet film 51 is laid flat on the surface of the heat exchanger 4.
  • the air conditioning system further includes a water tray 53.
  • the water receiving tray 53 is disposed below the wet film 51 and the heat exchanger 4, and the water receiving tray 53 is disposed above the water tank 52.
  • the water tray 53 can also support the wet film 51 and the heat exchanger 4.
  • the water receiving tray 53 is for collecting water flowing from the wet film 51 and condensed water generated by the heat exchanger 4, thereby facilitating collection of the humidifying water and the heat exchanger 4. Accordingly, the water tank 52 is also used for collection Water flowing down from the water tray 53.
  • the water flowing down the wet film 51 and the condensed water flowing down from the heat exchanger 4 are first collected by the water receiving tray 53, and then flowed into the water tank 52 from the water receiving tray 53.
  • the specific way of the water in the water receiving tray 53 flowing into the water tank 52 may be that a small opening is provided in the bottom of the water receiving tray 53, so that the water in the water receiving tray 53 flows into the water tank 52 from the opening; or, A water line is provided between the water tray 53 and the water tank 52.
  • One end of the pipeline is connected to the water receiving tray 53, and the other end of the pipeline can be aligned with the opening of the water tank 52, so that the water in the water receiving tray 53 is gravity. Under the action, it flows into the water tank through the pipeline.
  • the water receiving tray since the water receiving tray is closer to the wet film and the heat exchanger, the water used for humidification and the condensed water can be more conveniently collected, and at the same time, the water of the water tank 52 comes to the water receiving tray 53, There is also more freedom in the arrangement of the water tank 52 within the cabinet 2.
  • the number of water trays 53 and heat exchangers 4 of the air conditioning system is at least two, respectively, wherein different water trays 53 are used to collect condensation from different heat exchangers 4 water.
  • the water collected in the different water receiving trays 53 flows into the same water tank 52 through the pipelines, and the pipelines are respectively connected to different water receiving trays 53, and the pipelines are also connected to the water tanks 52.
  • the air conditioning system includes two heat exchangers 4, which are arranged in a " ⁇ " type, and each of the heat exchangers is also provided with water receiving water.
  • the wet film is laid on one of the heat exchangers, so that one of the water receiving trays 53 is used to collect the condensed water left by the heat exchanger 4, and is also used to collect the water flowing down the wet film 51.
  • the water in each water receiving tray 53 flows into the water tank through the pipeline by gravity, so that the water collected in the water tank includes condensed water generated by different heat exchangers, and water used for humidification under the wet film flow.
  • each water tray 53 can collect water generated by different devices, and is convenient when a plurality of heat generating devices such as heat exchangers are arranged in the cabinet. Recycling the water produced by these devices further reduces the waste of water resources.
  • the water tank of an air conditioning system collects condensed water produced by a heat exchanger of another air conditioning system through a pipeline.
  • the condensate from different air conditioning systems is brought into the water tank of one of the air conditioning systems.
  • a heat exchanger 4 having a " ⁇ " shape is disposed in the cabinets of two air conditioning systems, and a wet film 51 is also disposed in the cabinet of one of the air conditioning systems, and each cabinet 2 is provided.
  • the condensed water flowing down the heat exchanger 4 is collected by the respective water receiving trays 53, and each water receiving tray 53 is connected to the water tank in the cabinet 2 through the pipeline, so that the water collected by each water receiving tray 53 passes through the pipeline.
  • the water tank is further provided with a partition 57.
  • the height of the partition 57 is lower than the edge of the tank of the water tank 52, so that the partition 57 will be the water tank.
  • Divided into a circulation side and a drainage side when the water level in the tank is higher than the partition 57, the water overflows to the other side and flows out from the drain outlet on the side.
  • the position of the drain port may be set at any position lower than the wall surface of the tank 57. Therefore, when the water on the circulation side of the water tank 52 exceeds the height of the partition 57, it overflows to the drain side and is discharged from the drain port on the drain side.
  • the drain port can only be limited to the float. With the partition 57, the drain can be adjusted according to the specific situation and more flexible.
  • the water tank 52 may not be provided with the partition 57, and it is also possible to directly provide the drain port.
  • no drain port may be provided without a partition, and a water receiving tray is disposed at the bottom of the water tank.
  • the room-level air conditioner is usually self-draining by gravity.
  • the air conditioning system of the embodiment of the present invention successfully combines the humidifying water on the wet film and the self-draining of the heat exchanger through the design of the water tank 52, thereby reducing the number of air conditioners.
  • the waste of water resources and the reliable discharge of the condensate generated by the heat exchanger 4 are ensured.
  • the condensed water of the heat exchanger 4 flows to the water tank 52 and the discharge cabinet 2 by gravity, and the water flow of the wet film 51 to the water tank 52 also utilizes gravity, thereby reducing the power consumption of the unit, so that the air conditioning system of the embodiment of the present invention is more Energy saving.
  • the embodiment of the invention further provides an air conditioning humidification method, which can be applied to each of the above air conditioning systems, such as the air conditioning system shown in FIG.
  • the air conditioning humidification method according to the embodiment of the present invention is used in an air conditioning system including: a cabinet 2, a fan 3 disposed on the cabinet 2, and a wet film 51 disposed in the cabinet 2, and the wet film 51 is used for humidification.
  • the method of the embodiment of the present invention includes:
  • Step 601 Injecting water into the wet film.
  • Step 602 Control the fan to operate.
  • the fan 3 After the air conditioning system controls the operation of the fan 3, the fan 3 generates an air flow in the cabinet 2, which blows water vapor from the wet film 51 injected with water to adjust the humidity of the machine room.
  • control fan in order to prevent water from being blown out of the wet film, the control fan operates, including:
  • Step A1 When the air conditioning system starts to humidify the equipment room, the control fan runs at a speed less than the preset speed threshold for a preset time;
  • Step A2 After the fan is operated for a preset time, the control fan is operated at a speed greater than a preset speed threshold.
  • the water on the surface of the wet film is readily blown out by the wind entrainment when the humidification begins.
  • the air conditioning system of the embodiment of the present invention avoids the occurrence of the phenomenon of blowing water from the wet film 51 by the two-stage control of the rotational speed of the blower 3.
  • the heat exchanger 4 is generally arranged obliquely, and the humidification amount of the wet film 51 also needs to be increased by increasing the air volume.
  • the wet film 51 can be arranged in parallel with the heat exchanger 4, but in this arrangement, the air conditioning humidification method of the embodiment of the invention can avoid the phenomenon of water blowing from the wet film and protect the normal operation of the unit equipment. At this time, it is also feasible to apply the wet film in a tilt range of 60 to 90°.
  • an air conditioning humidification method is used in an air conditioning system, the air conditioning system includes: a cabinet 2, a fan 3 disposed on the cabinet 2, and a wet film 51 disposed in the cabinet 2, the wet film 51 being opposite to the wet film 51 The water level is inclined at a preset angle, and the wet film 51 is used for humidifying the machine room; the method includes: injecting water into the wet film 51; when the air conditioning system starts to humidify the machine room, controlling the fan 3 to rotate at a preset time than the preset speed threshold Internal operation; after the fan 3 is operated for a preset time, the control fan 3 is operated at a rotation speed greater than a preset speed threshold to generate airflow in the cabinet 2 by controlling the operation of the fan 3, and the airflow blows water vapor from the wet film 51 of the injected water.
  • the air conditioning humidification method reduces the dependence on current during humidification by using wet film humidification, thereby realizing energy saving and humidification.
  • the wet film is tilted at a preset angle with respect to the horizontal plane, which improves the contact area of the wet film and the airflow in the cabinet, thereby increasing the amount of humidification, but wet After the film is tilted, it is easy to be blown. For this reason, when the air conditioning system starts to humidify the machine room, the fan first runs at a speed less than the preset speed threshold. After the fan runs for a period of time, the surface of the wet film is wet, at this time the wet film and water.
  • the affinity is relatively large, and the water on the wet film is not easily blown out from the wet film by the airflow, so that the fan can be operated at a high speed to improve the airflow and humidification generated by the air conditioning system, and the air conditioning system can meet the requirements for adjusting the humidity of the equipment room, and When the wet film is arranged obliquely, the air flow generated by the fan is prevented from blowing liquid water from the wet film.
  • FIG. 7 is a flowchart of a method for humidifying an air conditioner according to an embodiment of the present invention, the method can be applied to each air conditioning system described above.
  • the air conditioning humidification method shown in FIG. 7 can also refer to the flow diagram shown in FIG.
  • the air conditioning system comprises: a cabinet 2, a fan 3 disposed on the cabinet 2, and a wet film 51 disposed in the cabinet 2, the wet film 51 for humidifying the machine room.
  • the wet film 51 is inclined at a predetermined angle with respect to the horizontal plane, and the predetermined angle at which the wet film 51 is inclined with respect to the horizontal plane may be between 60 degrees and 90 degrees.
  • the air conditioning system further comprises a heat exchanger 4, the heat exchanger 4 is arranged obliquely in the cabinet 2 with respect to a horizontal plane, and the wet film 51 is laid flat on the surface of the heat exchanger 4 or with the heat exchanger 4 Arranged in parallel.
  • the air conditioning system further includes a liquid level sensor 55 and a water injection valve 56,
  • the air conditioning system further includes a water pump 54 and a water tank 52.
  • the water tank 52 is disposed in the cabinet 2, and the water tank 52 is located below the wet film 51.
  • Step 701 When it is detected that the equipment room is to be humidified, the liquid level sensor determines whether the water level in the water tank reaches a preset water level. If the water level in the water tank reaches the preset water level, step 702 is performed. If the water level in the water tank does not reach the preset water level, step 703 is performed.
  • the air conditioner has a humidification demand, it is judged by the liquid level sensor 55 whether the water level in the water tank 52 reaches the designated position before the water pump 54 is started.
  • Methods for detecting whether the equipment room is to be humidified include, but are not limited to, detection by a humidity sensor, command input by a worker or a computer.
  • the circulating water pump can use the centrifugal force to press the water to a certain height, but since the air density is lower than the water, the pump cannot press the air out. Therefore, after entering the air in the pump, it is impossible to continue to supply water to the wet film.
  • the performance is that the pump is sealed by gas, called a gas seal.
  • the position of the preset water level can be set according to the water level that prevents the water seal of the pump.
  • Step 702 Start the water pump.
  • the water pump 54 is turned on to perform step 704.
  • Step 703 Open the water injection valve.
  • the water injection valve 56 is opened to inject water into the water tank 52 through the water injection valve 56 until the water level in the water tank 52 reaches a preset water level. Then, the water pump 54 is turned on again, that is, step 702 is performed. In this way, the water seal of the water pump 54 can be avoided.
  • Step 704 Injecting water from the water tank through the water pump to inject the wet film.
  • the humidifying water is extracted from the water tank 52 through the water pump 54 to inject the wet film to make the water
  • the upper end of the wet film 51 flows to the lower end of the wet film 51, and then flows into the water tank 52.
  • a specific implementation of injecting water into the wet film 51 may be a water separator 59 that injects water into the wet film 51, whereby water flows on the surface of the wet film 51 from the upper end of the wet film 51 to the wet film 51 under the action of gravity. The lower end.
  • Step 702 and step 704 are one of the specific implementations of injecting water into the wet film.
  • injecting water into the wet film 51 may be provided with a pipeline at the upper end of the wet membrane 51.
  • the pipeline is provided with a valve, and when the valve is controlled to open, the pipeline directly injects into the wet membrane. When the valve is closed, the humidification water is stopped from being injected into the wet film.
  • Step 705 When the air conditioning system starts to humidify the equipment room, the control fan operates at a speed less than a preset speed threshold for a preset time.
  • the fan 3 is operated at a low speed for a preset time before being operated at a high speed. Since the wet film surface is dry when the humidification is started, the affinity of the water and the wet film 51 is small, and when the wind blows over the surface of the wet film 51, the water is easily taken out from the wet film, which is when the wet film 51 is obliquely arranged, the wet film 51 blowing water is especially likely to occur. Therefore, the fan 3 is first controlled to operate at a low speed.
  • the flow rate of the airflow generated by the fan 3 in the cabinet 2 is small, and even if the affinity of the water and the wet film 51 is small, the flow of the flow rate is small, and the humidification water cannot be used from the wet film 51.
  • the water pump 3 injects the humidification water into the wet film 51, and the water for humidification flows from the one end of the wet film 51 to the other end of the wet film 51 on the surface of the wet film 51, so that the wet film 51 gradually becomes wet. Thereby, the affinity of water and wet film becomes large. In this way, it is ready to increase the rotational speed of the fan 3.
  • Step 706 After the fan runs for a preset time, the control fan is operated at a speed greater than a preset speed threshold.
  • the fan When the fan is operated for a preset time, the affinity of the humidifying water and the wet film 51 becomes larger. At this time, the fan is controlled to operate at a speed greater than a preset speed threshold, so that the flow rate of the airflow becomes larger, thereby increasing the humidification amount of the air conditioning system. Meet the humidity adjustment requirements of the equipment room.
  • the setting of the preset speed threshold may be obtained according to a statistical experiment result.
  • the preset time is positively correlated with the volume of the water tank 52, negatively correlated with the flow rate of the water injection valve 56, positively correlated with the wet film area, and negatively correlated with the sine of the angle between the wet film 51 and the horizontal plane. .
  • the fan low speed operation duration T is a function of the tank volume V, the water injection solenoid valve flow rate Qvalve, the wet membrane area A, and the angle ⁇ between the wet film and the horizontal plane.
  • K1 and k2 are constants and can be used to adjust the calculation results more accurately.
  • the surface of the inclined wet film 51 is dried, and the affinity of water and the wet film 51 is small.
  • the fan 3 it is necessary to first control the fan 3 to run at a lower speed until the surface of the wet film 51 is wet, and the wet film surface is wet, and the affinity of the water and the wet film is large. Then the fan runs at high speed to increase the relative speed of water and wind to increase the amount of humidification.
  • Step 705 and step 706 are one of the specific implementation methods for controlling the operation of the fan, and controlling the operation of the fan can generate airflow in the cabinet, and the airflow blows water vapor from the wet film that has been injected into the water to adjust the humidity of the machine room.
  • the method of the embodiment of the present invention when the water is pumped from the water tank 52 to the wet film by the water pump 54, the method of the embodiment of the present invention further includes: determining, by the liquid level sensor 55, whether the water level in the water tank 52 is within a preset water level range; When the water level in the water tank 52 is not within the preset water level range, the water injection valve 56 is opened to inject water into the water tank 52 through the water injection valve 56. The water level in the water tank 52 is maintained within a preset water level range. That is, during the humidification process, according to the feedback signal of the liquid level sensor 55, the opening and closing of the water injection valve 56 and the water pump 54 are controlled, and the wet film is continuously supplied with water until the indoor humidity reaches the set value. In this way, the tank level is continuously detected during the humidification process, and the water level is maintained within the specified height range, thereby preventing the water pump 54 from being sealed.
  • Step 707 When the humidity of the equipment room reaches the specified value, the humidification operation is stopped.
  • the air conditioning system detects that the humidity in the equipment room reaches the specified value, the humidification operation is stopped, for example, the operation of the water pump is stopped, thereby stopping the supply of water to the wet film.
  • the above humidification logic does not work when the air conditioning system is operating in a dehumidification condition.
  • the condensed water generated by the heat exchanger 4 is collected into the water tank through the water pipe, and the water is passed through the partition 57 and discharged through the drain port.
  • the heat exchanger can also work simultaneously when the air conditioning system is operating in a dehumidification condition.
  • the air conditioning system may not include the liquid level sensor 55 and the water injection valve 56, so that steps 701, 703, 707, and 708 may not be performed, but when it is detected that the equipment room is to be humidified, Start the pump directly, but such a solution may cause the pump to create a gas seal during operation.
  • the air conditioning humidification method of the embodiment of the present invention can also be applied to the water receiving tray 53, including In the air conditioning system of the plurality of heat exchangers 4, for example, in the air conditioning system shown in FIG. 2 to FIG. 5, the embodiment of the present invention does not specifically limit this.
  • the air conditioning system and the air conditioning humidification method provided by the embodiments of the present invention can be used in a lower air supply room level air conditioner, for example, as shown in FIG. 2 and FIG. 4 and FIG. It can also be used in an upper air supply air conditioner, for example, as shown in Fig. 3, at which time the fan is above the heat exchanger, and the wet film and the heat exchanger can be arranged obliquely.
  • the water on the surface of the wet film 51 is easily blown out by the wind entrainment when the humidification is started.
  • the air conditioning system of the embodiment of the present invention avoids the occurrence of the phenomenon of blowing water from the wet film 51 by the two-stage control of the rotational speed of the blower 3.
  • the heat exchanger 4 is generally arranged obliquely, and the humidification amount of the wet film 51 also needs to be increased by increasing the air volume.
  • the wet film 51 needs to be arranged in parallel with the heat exchanger 4, but in this arrangement, the air conditioning humidification method of the embodiment of the invention can avoid the phenomenon of water blowing from the wet film and protect the normal operation of the unit equipment. At this time, it is also feasible to apply the wet film in a tilt range of 60 to 90°. Moreover, the humidification water can be recycled by the arrangement of the water pump 54 and the water tank 52, thereby reducing waste of water resources. The use of the water injection valve 56 and the liquid level sensor 55 allows the water pump 54 to provide sufficient humidification water to the wet film, which avoids the gas seal of the water pump.

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  • Air Conditioning Control Device (AREA)

Abstract

La présente invention concerne un système de climatisation et un procédé d'humidification de climatisation. Le système de climatisation comprend : une enceinte (2), un ventilateur (3) disposé sur l'enceinte (2), et une membrane humide (51) disposée dans l'enceinte (2). La membrane humide (51) incline un angle prédéfini par rapport au plan horizontal et est configurée pour humidifier une salle de machine ; lorsque le système de climatisation commence à humidifier la salle de machine, le ventilateur (3) fonctionne à une vitesse de rotation prédéfinie inférieure à un seuil de vitesse de rotation prédéfini dans un temps prédéfini (A1) ; et après que le ventilateur (3) ait fonctionné pendant le temps prédéfini, le ventilateur (3) tourne à une vitesse de rotation supérieure au seuil de vitesse de rotation prédéfini (A2), le flux d'air généré dans l'enceinte (2) pendant le fonctionnement du ventilateur (3) étant utilisé pour souffler de la vapeur d'eau hors de la membrane humide (5) pour ajuster l'humidité dans la salle des machines. Par conséquent, non seulement une économie d'énergie et une humidification sont réalisées, mais l'eau liquide ne peut pas être soufflée depuis la membrane humide (51) par le flux d'air généré par le ventilateur (3) parce que le ventilateur (3) fonctionne dans un premier temps à une vitesse de rotation inférieure à la vitesse de rotation prédéfinie, puis fonctionne à une vitesse de rotation supérieure à la vitesse de rotation prédéfinie lorsque l'humidification est démarrée.
PCT/CN2017/115456 2017-05-27 2017-12-11 Système de climatisation et procédé d'humidification de climatisation WO2018218926A1 (fr)

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CN109612008B (zh) * 2018-12-03 2021-08-20 广东美的制冷设备有限公司 空调器的控制方法、装置及具有其的空调器
CN110108016A (zh) * 2019-04-08 2019-08-09 华电电力科学研究院有限公司 一种凝结水控制系统中的集水箱及其使用方法
CN114877416B (zh) * 2022-04-29 2024-05-07 广东美的制冷设备有限公司 空调器、空调器的加湿控制方法、控制器及存储介质

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