CN112944564A - Control method of machine room air conditioner - Google Patents
Control method of machine room air conditioner Download PDFInfo
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- CN112944564A CN112944564A CN202110203730.1A CN202110203730A CN112944564A CN 112944564 A CN112944564 A CN 112944564A CN 202110203730 A CN202110203730 A CN 202110203730A CN 112944564 A CN112944564 A CN 112944564A
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- 238000000034 method Methods 0.000 title claims abstract description 100
- 238000007791 dehumidification Methods 0.000 claims description 51
- 230000007613 environmental effect Effects 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 238000010438 heat treatment Methods 0.000 description 14
- 239000003507 refrigerant Substances 0.000 description 11
- 230000002349 favourable effect Effects 0.000 description 9
- 230000033228 biological regulation Effects 0.000 description 8
- 239000012528 membrane Substances 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention aims to solve the problem that the humidity control accuracy is poor in the control logic for regulating and controlling the environment humidity of the existing machine room air conditioner. The invention provides a control method of a machine room air conditioner, which is characterized in that the humidifying capacity of a humidifying device of the machine room air conditioner after being closed is measured in the first operation process of the humidifying device, and when the humidifying device is closed is determined according to the humidifying capacity of the humidifying device after being closed in the process of not operating the humidifying device for the first time; and/or measuring the dehumidifying capacity of the dehumidifying device of the machine room air conditioner after the dehumidifying device is closed in the first operation process, and determining when to close the dehumidifying device according to the dehumidifying capacity of the dehumidifying device after the dehumidifying device is closed in each non-first operation process of the dehumidifying device. The invention can eliminate the influence of certain humidifying (and/or dehumidifying) capacity on the control of the ambient humidity in the machine room after the humidifying device (and/or the dehumidifying device) is closed to a great extent, and can also close the dehumidifying device and the humidifying device in advance to save electric energy.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly provides a control method of a machine room air conditioner.
Background
The air conditioner in the machine room is a high-precision air conditioner for the machine room, and the main service objects are computers, data center equipment and the like, and the air conditioner in the machine room can control the temperature and the humidity of the machine room. Because computers and data center equipment in a machine room are sensitive to environmental static electricity, the requirement on humidity conditions is high, and a machine room air conditioner is required to accurately control the environmental humidity in the machine room.
The existing machine room air conditioner usually comprises a humidifying device and a dehumidifying device, and the control of the ambient humidity in the machine room is realized by controlling the humidifying device and the dehumidifying device. The existing air conditioner in the machine room usually detects the ambient humidity in the machine room and compares the ambient humidity with a preset humidity (i.e. the humidity desired to be achieved), and if the ambient humidity is equal to the preset humidity, the operating humidifying device or dehumidifying device is turned off, so as to achieve the purpose of controlling the ambient humidity in the machine room.
However, the humidifying device or the dehumidifying device in the existing machine room air conditioner can still have a certain humidifying or dehumidifying capacity for a certain time after being closed, and the humidifying or dehumidifying is continued. For the humidifying device, taking an electrode humidifier as an example of the humidifying device, the electrode humidifier comprises a water containing tank and an electrode heating rod, the electrode heating rod is inserted into water in the water containing tank, and the electrode heating rod is electrified to heat the water, so that the water in the water containing tank is evaporated to realize humidification. When the electrode humidifier is turned off (namely, the electrode heating rod stops electrifying), the electrode heating rod can not be cooled rapidly, and the water in the water containing tank can still be heated, so that the humidification can still be carried out after the humidification device is turned off. For the dehumidifying device, taking the dehumidifying device as a heat exchanger of an indoor unit of an air conditioner of a machine room as an example, in the process of air-conditioning operation of the machine room, the heat exchanger of the indoor unit is used as an evaporator, air in the machine room is sucked by the fan in the indoor unit, then flows through the heat exchanger and is sent out from the indoor unit to the machine room, and when the air flows through the heat exchanger, moisture in the air is condensed into water drops, so that dehumidification is realized. However, when the dehumidification device is turned off (by stopping the operation of the compressor), the heat exchanger does not rapidly return to room temperature, and therefore, dehumidification can be continued. Due to the characteristics of the humidifying device and the dehumidifying device, the humidity control accuracy of the control logic for regulating and controlling the ambient humidity in the machine room is not good enough.
Therefore, there is a need in the art for a control method of a machine room air conditioner to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the humidity control accuracy of the control logic for regulating and controlling the ambient humidity of the existing machine room air conditioner is poor, the present invention provides a control method of a machine room air conditioner, wherein an indoor unit of the machine room air conditioner comprises a humidifying device and a dehumidifying device, and the control method comprises: in the first operation process of the humidifying device, the ambient humidity Ts is acquired in real time1When the ambient humidity Ts1When the preset humidity Ty is reached, the humidifying device is closed and the environment humidity Ts at the moment is recorded1j"ShiObtaining the ambient humidity Th after the humidifying device is closed1When the ambient humidity Th1When no longer rising, record the ambient humidity Th at that time1jAnd calculating Δ T1＝Th1j-Ts1jAnd in the process of operating the humidifying device for a non-first time, acquiring the ambient humidity Ts in the operating process of the humidifying device in real time2Calculating Δ T2＝Tm-Ts2Wherein Tm is the target humidity of the operation of the humidifying device at the time when Delta T2-△T1When the absolute value is less than or equal to Delta T, the humidifying device is closed, wherein the Delta T is zero or a positive number; and/or acquiring the environment humidity Ts in real time during the first operation of the dehumidifying device1', when the ambient humidity Ts1When the preset humidity Ty' is reached, the dehumidifying device is closed and the environment humidity Ts at the moment is recorded1j', obtaining the environment humidity Th after the dehumidification device is closed in real time1', when the ambient humidity Th1When no longer decreasing, record the ambient humidity Th at that time1j' and calculate Δ T1’＝Ts1j’-Th1j' obtaining the environmental humidity Ts in the running process of the dehumidifying device in real time in the process of not running the dehumidifying device for the first time2', calculating Δ T2’＝Ts2'-Tm', wherein Tm is the target humidity of the operation of the dehumidification device at the time when Delta T2’-△T1And when the ' is less than or equal to the Delta T ', the dehumidification device is closed, and the Delta T ' is zero or positive.
Through the arrangement, in the aspect of humidification, the humidification capacity of the humidification device of the air conditioner of the machine room after being closed can be measured in the first operation process of the humidification device, and when the humidification device is closed is determined according to the humidification capacity of the humidification device after being closed in the process of not operating the humidification device for the first time, compared with the existing control logic in the background technology, the method not only eliminates the influence of certain humidification capacity on the control of the ambient humidity in the machine room after the humidification device is closed to a great extent, but also can close the humidification device in advance and save electric energy; in the aspect of dehumidification, the dehumidification capacity of the machine room air conditioner after the dehumidification device is closed can be measured in the first operation process of the dehumidification device, and when the dehumidification device is closed is determined according to the dehumidification capacity of the machine room air conditioner in the process of not operating the dehumidification device for the first time, compared with the existing control logic in the background technology, the influence of certain dehumidification capacity on the control of the ambient humidity in the machine room after the dehumidification device is closed is eliminated to a great extent, the dehumidification device can be closed in advance, and electric energy is saved.
In a preferable technical solution of the control method of the air conditioner in the machine room, the control method further includes: in the first operation of the humidifying device, if the environment humidity Th1Continuously increasing, and continuously acquiring the environment humidity Th after the humidifying device is closed in real time1Up to ambient humidity Th1No longer rises.
In a preferable technical solution of the control method of the air conditioner in the machine room, the control method further includes: in the first operation of the humidifying device, if the environment humidity Th1If the temperature is not increased any more, the closing time Tg of the humidifying device is obtained1(ii) a In the process of operating the humidifying device for a non-first time, if the closing time Tg of the humidifying device is the current time2Reach the closing time Tg1If yes, acquiring the current environmental humidity Td; and if the current environment humidity Td is higher than the target humidity Tm, starting the dehumidifying device.
Through such setting, can close when long time that reaches can the humidification after humidification device closes and when long and ambient humidity is higher than target humidity, continue to carry out further adjustment to ambient humidity through dehydrating unit, more be favorable to the computer lab air conditioner to carry out the accuracy regulation and control to the ambient humidity in the computer lab.
In a preferable technical solution of the control method of the air conditioner in the machine room, the control method further includes: and if the current environment humidity Td is lower than the target humidity Tm, starting the humidifying device.
Through such setting, can close when long time reaches length and ambient humidity when being less than the target humidity that humidification device can the humidification after closing at humidification device, continue to carry out further adjustment to ambient humidity through humidification device, more be favorable to the computer lab air conditioner to carry out the accuracy regulation and control to the ambient humidity in the computer lab.
In the preferable technical scheme of the control method of the air conditioner in the machine room, the environment humidity Th1jEqual to the target humidity Tm.
Through such setting, more be favorable to the computer lab air conditioner to pass through humidification device and carry out accurate regulation and control to the ambient humidity in the computer lab.
In a preferable technical solution of the control method of the air conditioner in the machine room, the control method further includes: in the process of the first operation of the dehumidification device, if the ambient humidity Th1 ' continues to decrease, the ambient humidity Th1 ' after the humidification device is turned off is continuously obtained in real time until the ambient humidity Th1 ' does not decrease any more.
In a preferable technical solution of the control method of the air conditioner in the machine room, the control method further includes: in the first operation of the dehumidifier, if the ambient humidity Th1' no longer decreasing, the off-time Tg of the humidifying device is obtained1'; in the process of operating the dehumidifying device for a non-first time, if the dehumidifying device is turned off for the time Tg2' time to off period Tg1', then obtain the present ambient humidity Td'; and if the current environment humidity Td 'is higher than the target humidity Tm', starting the dehumidifying device.
Through such setting, can close when long time that reaches can the dehumidification after dehydrating unit closes and when ambient humidity is higher than target humidity when dehydrating unit, continue to carry out further adjustment to ambient humidity through dehydrating unit, more be favorable to the computer lab air conditioner to carry out the accuracy regulation and control to the ambient humidity in the computer lab.
In a preferable technical solution of the control method of the air conditioner in the machine room, the control method further includes: and if the current environment humidity Td 'is lower than the target humidity Tm', starting the humidifying device.
Through such setting, can close when long time that reaches can the dehumidification after dehydrating unit closes and when ambient humidity is less than target humidity when closing, continue to carry out further adjustment to ambient humidity through humidification device, more be favorable to the computer lab air conditioner to carry out the accuracy regulation and control to the ambient humidity in the computer lab.
In the preferable technical scheme of the control method of the air conditioner in the machine room, the environment humidity Th1j'equal to the target humidity Tm'.
Through such setting, more be favorable to the computer lab air conditioner to carry out accurate regulation and control through dehydrating unit to the ambient humidity in the computer lab.
In a preferred technical scheme of the control method of the air conditioner in the machine room, the humidifying device is an electrode humidifier or a wet film humidifier, and the dehumidifying device is a heat exchanger of the indoor unit.
Drawings
FIG. 1 is a logic diagram I of a control method of a computer room air conditioner;
fig. 2 is a logic diagram ii of the control method of the air conditioner in the machine room according to the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The machine room air conditioner comprises an indoor unit and an outdoor unit, wherein the indoor unit comprises an indoor heat exchanger and an indoor fan, the outdoor unit comprises an outdoor heat exchanger, a compressor, a restrictor (such as an electronic expansion valve or a capillary tube) and the outdoor fan, the indoor heat exchanger, the compressor, the outdoor heat exchanger, the restrictor and the indoor heat exchanger are sequentially communicated to form a refrigerating and heating system to form a circulation loop, and a refrigerant can circularly flow in the circulation loop. The indoor fan can make the air in the machine room enter the outer shell of the outdoor unit, flow through the indoor heat exchanger and then be sent out from the indoor unit to the machine room. The outdoor fan can make the outside air enter the outer shell of the outdoor unit, flow through the outdoor heat exchanger and then be sent out from the outdoor unit to the outside.
In the air-conditioning cooling operation process of the machine room, the indoor heat exchanger is used as an evaporator, and the outdoor heat exchanger is used as a condenser. The refrigerant circulates and flows through the compressor, the outdoor heat exchanger, the throttler and the indoor heat exchanger in sequence, the compressor compresses low-temperature and low-pressure gaseous refrigerant from the indoor heat exchanger into high-temperature and high-pressure gaseous refrigerant, then the refrigerant flows through the condenser and is condensed into normal-temperature and high-pressure liquid, then the refrigerant flows through the throttler and is throttled into low-temperature and low-pressure liquid, and then the refrigerant flows through the evaporator and is changed into low-temperature and low-pressure gaseous refrigerant. When the air flows through the indoor heat exchanger, heat is absorbed by the indoor heat exchanger, the temperature of the air is reduced, moisture in the air is condensed into water drops, the air is supplied to the machine room, refrigeration is achieved, and dehumidification is achieved. That is to say, in the air-conditioning operation process of the machine room, the indoor heat exchanger is used as a dehumidifying device, and dehumidification can be realized. When the dehumidification device is turned off (by stopping the compressor), the heat exchanger does not quickly return to room temperature, and therefore, dehumidification can continue. Of course, those skilled in the art can flexibly set the specific structure of the dehumidifying device in practical application as long as the environmental humidity in the machine room can be reduced by the dehumidifying device. And when the dehumidifying device can still have certain dehumidifying capacity within a certain time after being closed and can continuously dehumidify, the control method of the air conditioner of the machine room provided by the invention can be applied.
The refrigerating and heating system also comprises a reversing valve which can change the flow direction of the refrigerant. Under the effect of the reversing valve, in the heating operation process of the machine room air conditioner, the flow direction of the refrigerant is opposite to that in the refrigeration process, specifically, the refrigerant circularly flows through the compressor, the indoor heat exchanger, the throttler and the indoor and outdoor heat exchangers in sequence, at the moment, the indoor heat exchanger is used as a condenser, and the outdoor heat exchanger is used as an evaporator. When air flows through the indoor heat exchanger, the heat released by the indoor heat exchanger is absorbed, the temperature of the air is increased, and the air is supplied to the machine room to realize heating.
The indoor unit of the machine room air conditioner also comprises a humidifying device, and the humidifying device can still have certain humidifying capacity within a certain time after being closed, so that the humidifying can be continuously carried out. For example, the humidifying device may be an electrode humidifier or a wet film humidifier, and of course, a person skilled in the art may flexibly set a specific type or structure of the humidifying device in practical application as long as the environmental humidity in the machine room can be increased by the humidifying device. And when the humidifying device can still have certain humidifying capacity within a certain time after being closed and can continue humidifying, the control method of the air conditioner of the machine room provided by the invention can be applied.
The electrode humidifier comprises a water containing tank and an electrode heating rod, wherein the electrode heating rod is inserted into water in the water containing tank, and the electrode heating rod is electrified to heat the water, so that the water in the water containing tank is evaporated to realize humidification. When the electrode humidifier is turned off (namely, the electrode heating rod stops electrifying), the electrode heating rod cannot be cooled rapidly at the moment, and the water in the water containing tank can still be heated continuously, so that the electrode humidifier can still be humidified continuously within a certain time after being turned off.
The wet film humidifier comprises a wet film, a fan and a water spraying device (for example, comprising a water pump and a water pipe). The water drenching device can be to wet membrane trickle, makes wet membrane absorb sufficient moisture, and the fan setting is in one side of wet membrane, starts the fan and blows to wet membrane, thereby can make the evaporation of water on the wet membrane realize the humidification. When the wet film humidifier is turned off (i.e. the fan is turned off and/or the water spraying device is stopped spraying water), moisture still exists on the wet film, so that the humidification can be continued after the wet film humidifier is turned off.
As shown in fig. 1, in the humidification process, the control method of the air conditioner in the machine room of the present invention includes: in the first operation process of the humidifying device, the ambient humidity Ts is acquired in real time1(ii) a When the ambient humidity Ts1When the preset humidity Ty is reached, the humidifying device is closed and the environment humidity Ts at the moment is recorded1j(ii) a Obtaining humidification device shutdown in real timeRear ambient humidity Th1(ii) a When the ambient humidity Th1When no longer rising, record the ambient humidity Th at that time1jAnd calculating Δ T1＝Th1j-Ts1j(ii) a In the process of operating the humidifying device for a non-first time, the ambient humidity Ts in the operating process of the humidifying device is acquired in real time2(ii) a Calculating Delta T2＝Tm-Ts2Wherein Tm is a target humidity of the operation of the current humidifying device; when Δ T2-△T1And when the temperature is less than or equal to delta T, closing the humidifying device, wherein the delta T is zero or positive.
That is, during the first operation of the humidifier, the humidifying capacity after the humidifier is turned off is measured, and the humidifying capacity after the humidifier is turned off is specifically measured by Δ T1The humidity of the environment in the machine room can be reflected and measured, namely, the humidity of the environment in the machine room can be reflected and measured by the degree of the humidity of the environment in the machine room after the humidifying device is closed. Then, when the humidifier is reused later (i.e., each time the humidifier is not operated for the first time), Δ T is calculated in real time2When the humidifying capacity after the humidifying device is closed is enough to enable the ambient humidity to be increased to be equal to the target humidity (namely delta T is zero), or when the humidifying capacity after the humidifying device is closed is enough to enable the ambient humidity to be increased to be equal to a specific value which is acceptable and slightly deviates from the target humidity (namely delta T is a positive number), the humidifying device is closed, and the humidifying capacity after the humidifying device is closed is fully utilized.
The control method can measure the humidifying capacity of the closed humidifying device in the first operation process of the humidifying device of the air conditioner of the machine room, and determine when to close the humidifying device according to the humidifying capacity of the closed humidifying device in the process of not operating the humidifying device for the first time.
It should be noted that the ambient humidity Ts during the operation of the humidifying device is obtained in real time2Meter for measuringCalculating Tm-Ts as Δ T22That is, the ambient humidity Ts is acquired in real time2And each time the ambient humidity Ts is acquired2Then, the environmental humidity Ts obtained this time is used2A value of (d), calculating Δ T2＝Tm-Ts2. In addition, the specific values of the preset humidity Ty and the target humidity Tm may be the same or different. Further, in the above, the ambient humidity Ts1A preset humidity Ty is reached, i.e. an ambient humidity Ts1Greater than or equal to the preset humidity Ty. Finally, the specific value of Δ T can be flexibly set by those skilled in the art in practical applications (for example, Δ T can be set to 0.3% assuming that the ambient humidity is expressed by relative humidity), and the adjustment of the specific value of Δ T does not limit the present invention, and should be limited within the protection scope of the present invention.
Preferably, with continued reference to fig. 1, the control method further comprises: during the first operation of the humidifier, if the ambient humidity Th1Continuously increasing, and continuously acquiring the environment humidity Th after the humidifying device is closed in real time1Up to ambient humidity Th1No longer rises.
Preferably, the control method further includes: during the first operation of the humidifier, if the ambient humidity Th1If the temperature is not increased any more, the closing time Tg of the humidifying device is obtained1(ii) a In the process of operating the humidifying device for a non-first time, if the closing time Tg of the humidifying device is the same as the closing time Tg of the humidifying device at the current time2Reach the closing time Tg1If yes, acquiring the current environmental humidity Td; if the current environment humidity Td is higher than the target humidity Tm, starting a dehumidifying device; and if the current environmental humidity Td is lower than the target humidity Tm, starting the humidifying device.
That is to say, during the first operation of the humidifying device, the humidifying time after the humidifying device is turned off is measured, when the humidifying device is reused later (i.e. during the process of not operating the humidifying device for the first time), when the turning-off time of the humidifying device reaches the humidifying time after the humidifying device is turned off, whether the ambient humidity is equal to the target humidity or not is confirmed, and if the ambient humidity is not equal to the target humidity, the humidifying device or the dehumidifying device is selected to be started to further adjust the ambient humidity according to the size relationship between the ambient humidity and the target humidity. Such setting, whether monitoring environment humidity equals target humidity when can the length of time that humidification device closed can the humidification when closing length of time, if not equal to, can continue to carry out further adjustment to environment humidity through humidification device or dehydrating unit, more be favorable to the computer lab air conditioner to carry out the accuracy regulation and control to the environment humidity in the computer lab.
Preferably, the ambient humidity Th1jEqual to target humidity Tm, such setting more is favorable to the computer lab air conditioner to pass through humidification device and accurately regulates and control the ambient humidity in the computer lab.
As shown in fig. 2, in the dehumidification process, the control method includes: in the first operation process of the dehumidifying device, the ambient humidity Ts is acquired in real time1'; when the ambient humidity Ts1When the preset humidity Ty' is reached, the dehumidifying device is closed and the environment humidity Ts at the moment is recorded1j'; obtaining the ambient humidity Th after the dehumidification device is closed in real time1'; when the ambient humidity Th1When no longer decreasing, record the ambient humidity Th at that time1j' and calculate Δ T1’＝Ts1j’-Th1j'; in the process of operating the dehumidifying device for a non-first time, the ambient humidity Ts in the operating process of the dehumidifying device is acquired in real time2'; calculating Delta T2’＝Ts2'-Tm', wherein Tm is the target humidity of the operation of the dehumidification device; when Δ T2’-△T1When the ' is less than or equal to the Delta T ', the dehumidification device is closed, and the Delta T ' is zero or positive.
That is, during the first operation of the dehumidifier, the dehumidification capacity after the dehumidifier is turned off is measured, and the dehumidification capacity after the dehumidifier is turned off is measured specifically by Δ T1' is embodied and measured, namely, is embodied and measured through the degree that the dehumidification device can reduce the environmental humidity in the machine room after being closed. Then, when the dehumidifier is reused later (i.e. each time the dehumidifier is not operated for the first time), Δ T is calculated in real time2To know the difference between the environmental humidity and the target humidity, and when the dehumidifier is closed, the dehumidifier is used for dehumidificationWhen the dehumidification capacity is enough to reduce the ambient humidity to be equal to the target humidity (namely, the delta T is zero), or when the dehumidification capacity after the dehumidification device is closed is enough to reduce the ambient humidity to be equal to a specific value which is acceptable and slightly deviates from the target humidity (namely, the delta T is a positive number), the dehumidification device is closed so as to fully utilize the dehumidification capacity of the dehumidification device after the dehumidification device is closed.
The control method can also measure the dehumidification capacity of the dehumidification device of the air conditioner in the machine room after the dehumidification device is closed in the first operation process, and determine when to close the dehumidification device according to the dehumidification capacity of the dehumidification device after the dehumidification device is closed in the process of not operating the dehumidification device for the first time.
It should be noted that the ambient humidity Ts during the operation of the dehumidifier is obtained in real time2'; calculating Delta T2’＝Ts2'-Tm', that is to say the ambient humidity Ts is obtained in real time2' and each time the ambient humidity Ts is acquired2' thereafter, the ambient humidity Ts obtained this time is used2' value, calculate Δ T2’＝Ts2'-Tm'. In addition, the specific values of the preset humidity Ty 'and the target humidity Tm' may be the same or different. Further, in the above, the ambient humidity Ts1'Up to the preset humidity Ty', that is, the ambient humidity Ts1'less than or equal to the preset humidity Ty'. Finally, the specific value of Δ T ' can be flexibly set by those skilled in the art in practical applications (for example, Δ T ' can be set to 0.3% assuming that the ambient humidity is expressed by relative humidity), and the adjustment of the specific value of Δ T ' does not limit the present invention, and should be limited within the protection scope of the present invention.
Preferably, with continued reference to fig. 2, the control method further comprises: during the first operation of the dehumidification device, if the ambient humidity Th1 ' continues to decrease, the ambient humidity Th1 ' after the humidification device is turned off is continuously obtained in real time until the ambient humidity Th1 ' does not decrease any more.
Preferably, the control method further includes: during the first operation of the dehumidifier, if the ambient humidity Th1' no longer decreases, the off-time Tg of the humidifying device is obtained1'; in the process of operating the dehumidifying device for each time, if the dehumidifying device is turned off for the time Tg2' time to off period Tg1', then obtain the present ambient humidity Td'; if the current environment humidity Td 'is higher than the target humidity Tm', starting a dehumidifying device; and if the current environmental humidity Td 'is lower than the target humidity Tm', starting the humidifying device.
That is, during the first operation of the dehumidifier, the dehumidifying duration after the dehumidifier is turned off is measured, when the dehumidifier is reused later (i.e. during the first non-operation of the dehumidifier), when the dehumidifying duration after the dehumidifier is turned off reaches the dehumidifying duration after the dehumidifier is turned off, whether the ambient humidity is equal to the target humidity is determined, and if the ambient humidity is not equal to the target humidity, the humidifying device is selected to be started or the dehumidifying device is started to further adjust the ambient humidity according to the size relationship between the ambient humidity and the target humidity. Such setting, whether monitoring environment humidity equals target humidity when can reaching the length of time that dehydrating unit can humidify after closing when dehydrating unit closes, if not equal to, can continue to carry out further adjustment to environment humidity through humidifying unit or dehydrating unit, more be favorable to the computer lab air conditioner to carry out the accuracy regulation and control to the environment humidity in the computer lab.
Preferably, the ambient humidity Th1jThe target humidity Tm 'is equal to the target humidity Tm', and the arrangement is more beneficial to accurately regulating and controlling the environmental humidity in the machine room through the dehumidifying device by the machine room air conditioner.
It should be noted that the control method of the present invention may be executed by a controller of a machine room air conditioner. The controller of the air conditioner in the machine room may be a controller of the air conditioner itself physically, may be a controller specially used for executing the present invention, and may also be a functional module or functional unit of another general controller.
As will be understood by those skilled in the art, since the control method relates to the ambient humidity, a humidity detection device (such as a humidity sensor) may be provided to detect the humidity, and the humidity detection device may be specifically provided in the room air conditioner itself or may be independent of the room air conditioner and in communication connection with the room air conditioner. In addition, since the air humidity can be expressed in various manners, such as absolute humidity, moisture content, relative humidity, and dew point temperature, etc., those skilled in the art can flexibly adjust the type and specific structure of the humidity detection device according to the actual air humidity, and such adjustments and changes should not be construed as limitations of the present invention, and are therefore within the scope of the present invention.
In practical application, the control method in the humidification process and the control method in the dehumidification process can be selected and used, and the control method in the humidification process and the control method in the dehumidification process can be used.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of a machine room air conditioner is provided, an indoor unit of the machine room air conditioner comprises a humidifying device and a dehumidifying device, and the control method comprises the following steps:
in the first operation process of the humidifying device, the ambient humidity Ts is acquired in real time1，
When the ambient humidity Ts1When the preset humidity Ty is reached, the humidifying device is closed and the environment humidity Ts at the moment is recorded1j，
Obtaining the ambient humidity Th after the humidifying device is closed in real time1，
When the ambient humidity Th1When no longer rising, record the ambient humidity Th at that time1jAnd calculating Δ T1＝Th1j-Ts1j，
In the process of operating the humidifying device for a non-first time, acquiring the ambient humidity Ts in the operating process of the humidifying device in real time2，
Calculating Delta T2＝Tm-Ts2，
Wherein Tm is the target humidity of the operation of the current humidifying device,
when Δ T2-△T1When the temperature is less than or equal to delta T, the humidifying device is closed,
wherein Δ T is zero or a positive number; and/or the like and/or,
in the first operation process of the dehumidifying device, the ambient humidity Ts is acquired in real time1’，
When the ambient humidity Ts1When the preset humidity Ty' is reached, the dehumidifying device is closed and the environment humidity Ts at the moment is recorded1j’，
Obtaining the environment humidity Th after the dehumidification device is closed in real time1’，
When the ambient humidity Th1When no longer decreasing, record the ambient humidity Th at that time1j' and calculate Δ T1’＝Ts1j’-Th1j’，
In the process of operating the dehumidifying device for a non-first time, acquiring the environmental humidity Ts in the operating process of the dehumidifying device in real time2’，
Calculating Delta T2’＝Ts2’-Tm’，
Wherein Tm is the target humidity of the operation of the current dehumidification device,
when Δ T2’-△T1'is less than or equal to delta T', the dehumidification device is closed,
where Δ T' is zero or a positive number.
2. The control method according to claim 1, characterized by further comprising:
in the first operation of the humidifying device, if the environment humidity Th1Continuously increasing, and continuously acquiring the environment humidity Th after the humidifying device is closed in real time1Up to ambient humidity Th1No longer rises.
3. The control method according to claim 1, characterized by further comprising:
in the first operation of the humidifying device, if the environment humidity Th1If the temperature is not increased any more, the closing time Tg of the humidifying device is obtained1；
In the process of operating the humidifying device for a non-first time, if the closing time Tg of the humidifying device is the current time2Reach the closing time Tg1If yes, acquiring the current environmental humidity Td;
and if the current environment humidity Td is higher than the target humidity Tm, starting the dehumidifying device.
4. The control method according to claim 3, characterized by further comprising:
and if the current environment humidity Td is lower than the target humidity Tm, starting the humidifying device.
5. The control method according to claim 1, characterized in that the ambient humidity Th1jEqual to the target humidity Tm.
6. The control method according to claim 1, characterized by further comprising:
in the first operation of the dehumidifier, if the ambient humidity Th1If the humidity is continuously reduced, the ambient humidity Th after the humidifying device is closed is continuously obtained in real time1', up to ambient humidity Th1' no longer decreases.
7. The control method according to claim 1, characterized by further comprising:
in the first operation of the dehumidifier, if the ambient humidity Th1' no longer decreasing, the off-time Tg of the humidifying device is obtained1’；
In the process of operating the dehumidifying device for a non-first time, if the dehumidifying device is turned off for the time Tg2' time to off period Tg1', then obtain the present ambient humidity Td';
and if the current environment humidity Td 'is higher than the target humidity Tm', starting the dehumidifying device.
8. The control method according to claim 7, characterized by further comprising:
and if the current environment humidity Td 'is lower than the target humidity Tm', starting the humidifying device.
9. The control method according to claim 1, characterized in that the ambient humidity Th1j'equal to the target humidity Tm'.
10. The control method according to claim 1, wherein the humidifying device is an electrode humidifier or a wet film humidifier, and the dehumidifying device is a heat exchanger of the indoor unit.
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