CN112628847A - Precision air conditioner and control method thereof - Google Patents
Precision air conditioner and control method thereof Download PDFInfo
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- CN112628847A CN112628847A CN202011332307.3A CN202011332307A CN112628847A CN 112628847 A CN112628847 A CN 112628847A CN 202011332307 A CN202011332307 A CN 202011332307A CN 112628847 A CN112628847 A CN 112628847A
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- water
- water tank
- water level
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- humidifying
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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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
- F24F11/32—Responding to malfunctions or emergencies
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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
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
Abstract
The invention discloses a precision air conditioner and a control method thereof, wherein the precision air conditioner comprises an indoor heat exchanger and a humidifier, and further comprises the following steps: the condensed water tank is positioned below the indoor heat exchanger and is provided with a first water outlet; a condensed water tank water level detection unit for detecting the water level of the condensed water tank; the humidifying water tank is positioned below the humidifier, is communicated with the condensed water tank, and is provided with a second water outlet, a water delivery port, a water inlet and an overflow port; a humidifying water tank water level detection unit for detecting the water level of the humidifying water tank; the water inlet control unit is used for controlling whether the water inlet enters water or not; a water discharge control unit for controlling whether the second water outlet discharges water; an overflow detecting unit for detecting whether the overflow port overflows; and the alarm unit is used for sending an alarm signal when the water level of the condensation water tank reaches a set water level and/or when the water level of the humidification water tank reaches a first water level and/or the overflow gap overflows. The invention can improve the safety and reliability of the air conditioner.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a precision air conditioner and a control method thereof.
Background
The precision air conditioner is used as a precision-level air conditioner for a constant-temperature and constant-humidity machine room, needs to radiate heat for an unmanned all-weather on-duty machine room server, and has the requirements of high reliability, high stability, high safety and high control precision, so that the reliability and the safety of a humidifying structure and a drainage structure of the precision air conditioner are particularly important.
In the existing precision air conditioner, in order to improve the safety, a water leakage detection mechanism is arranged at a water inlet position, a water drainage position, a condensed water drainage position and the like of a humidifying structure, an alarm signal is sent out after water leakage is detected, and meanwhile, the air conditioner is controlled to stop.
Through set up the detection mechanism that leaks in a plurality of positions, send out the warning when detecting to leak, although can realize the control and the warning of leaking, but only can play the warning suggestion effect after leaking the emergence, can't realize early warning and remind. In addition, the air conditioner needs to be controlled to stop after water leakage occurs, and the normal heat dissipation of a machine room is influenced by the stop of the air conditioner, so that the air conditioning performance of the precision air conditioner is reduced.
Disclosure of Invention
The invention aims to provide a precision air conditioner and a control method thereof, so as to improve the safety and reliability of the air conditioner.
In order to achieve the purpose, the precision air conditioner provided by the invention is realized by adopting the following technical scheme:
a precision air conditioner comprises an indoor heat exchanger and a humidifier, and further comprises:
a condensed water tank which is positioned below the indoor heat exchanger and is provided with a first water outlet;
a condensed water tank water level detection unit disposed in the condensed water tank for detecting a water level of the condensed water tank;
the humidifying water tank is positioned below the humidifier, is communicated with the condensed water tank, and is provided with a second water outlet, a water delivery port, a water inlet and an overflow port, the second water outlet is connected with a second water outlet pipe, the water inlet is connected with a humidifying water source through a water inlet pipe, the water delivery port provides humidifying water for the humidifier through a water delivery pipe, and the height of the overflow port is higher than that of the communication position of the humidifying water tank and the condensed water tank;
a humidification water tank water level detection unit which is arranged in the humidification water tank and is used for detecting the water level of the humidification water tank;
the water inlet control unit is formed on the water inlet pipe and is used for controlling whether the water inlet enters water or not;
a drain control unit formed on the second drain pipe for controlling whether the second drain port drains water;
an overflow detecting unit for detecting whether the overflow port overflows;
the alarm unit is used for sending an alarm signal when the water level of the condensed water tank reaches a set water level and/or when the water level of the humidifying water tank reaches a first water level and/or the overflow port overflows; the set water level and the first water level are both lower than the water level at the communication position of the humidifying water tank and the condensed water tank.
The precision air conditioner comprises a first water outlet, a first water outlet pipe and a check valve, wherein the first water outlet is connected with the first water outlet pipe, and the check valve is formed on the first water outlet pipe.
The precision air conditioner as described above, wherein the first drain port is formed at a bottom of the condensed water tank; the second water outlet, the water delivery port and the water inlet are formed at the bottom of the humidifying water tank.
The precision air conditioner as described above, further comprising:
a water delivery control unit formed on the water delivery pipe;
the drainage control unit, the water delivery control unit and the water inlet control unit are further set as follows:
after entering a specific working mode, the drainage control unit controls the second drainage port to be in a drainage state, and the water delivery control unit controls the water delivery port to stop delivering water; when the water level of the humidifying water tank reaches a second water level, the water inlet control unit controls the water inlet to stop feeding water, and when the water level of the humidifying water tank is lower than the second water level, the water inlet control unit controls the water inlet to feed water; the second water level is lower than the first water level.
The precision air conditioner further comprises a host control unit, wherein the host control unit is set to control the air conditioner to stop when the alarm signal indicates that the overflow gap overflows, and control the air conditioner to continue to operate when the alarm signal indicates that the water level of the condensed water tank reaches the set water level and/or when the water level of the humidifying water tank reaches the first water level.
In order to achieve the purpose, the precise air conditioner control method provided by the invention is realized by adopting the following technical scheme:
a precision air conditioner control method is provided, the precision air conditioner is the above precision air conditioner, the control method comprises a water leakage safety control process, and the water leakage safety control process comprises:
when the water level of a condensed water tank in the precision air conditioner reaches a set water level, sending a first alarm signal;
when the water level of a humidifying water tank in the precise air conditioner reaches a first water level, a second alarm signal is sent out, and meanwhile, a water discharge control unit in the precise air conditioner is used for controlling a second water discharge port of the humidifying water tank to discharge water;
when the overflow of the overflow port of the humidifying water tank occurs, a third alarm signal is sent out;
the emergency degree of the first alarm signal, the second alarm signal and the third alarm signal is sequentially enhanced.
In the above method for controlling a precision air conditioner, the water leakage safety control process further includes:
the drain control unit controls the second drain port of the humidification water tank to stop draining water when the water level of the humidification water tank is lower than the first water level.
In the above method for controlling a precision air conditioner, the water leakage safety control process further includes:
when the first alarm signal and the second alarm signal are sent out, controlling the air conditioner to continue to operate;
and when the third alarm signal is sent out, controlling the air conditioner to stop.
The control method of the precise air conditioner further comprises an automatic water inlet process, wherein the automatic water inlet process comprises the following steps:
when the water level of the humidifying water tank reaches a second water level, controlling the water inlet to stop water inflow;
when the water level of the humidifying water tank is lower than the second water level, controlling the water inlet to feed water;
the second water level is lower than the first water level.
The control method of the precise air conditioner further comprises a humidifying water tank self-cleaning control process, wherein the humidifying water tank self-cleaning control process comprises the following steps:
controlling a second water outlet of the humidifying water tank to be in a water discharging state, and simultaneously controlling a water delivery port of the humidifying water tank to stop water delivery;
when the water level of the humidifying water tank reaches the second water level, controlling the water inlet to stop water inflow;
and when the water level of the humidifying water tank is lower than the second water level, controlling the water inlet to feed water.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention provides a precision air conditioner and a control method thereof, which are provided with two water tanks, namely a condensation water tank and a humidification water tank, wherein the two water tanks are mutually communicated at a specified height, and each water tank is provided with a water outlet for draining water; respectively arranging water level detection units in the condensed water tank and the humidifying water tank to detect the water level of the water tank; when the water level of the condensed water tank exceeds the set water level due to the drainage fault of the condensed water tank, an alarm signal is sent out through an alarm unit so as to timely process the drainage fault; when the water level of the condensed water tank continues to rise, the water in the condensed water tank can flow to the humidifying water tank, so that the condensed water tank is prevented from overflowing; when the water level of the humidifying water tank reaches the first water level due to the inflow of condensed water and the like, the humidifying water tank can be controlled to forcibly drain water, so that the overflow is avoided, and meanwhile, an alarm signal is sent out to give an alarm; when the water level of the humidifying water tank further rises and overflow occurs, the overflow detection unit detects the overflow in time and gives an alarm again. Therefore, multi-stage water leakage safety early warning with the mutual matching of the condensation water tank and the humidification water tank is formed, sufficient time is provided for water leakage fault elimination, and the safety and reliability of the precision air conditioner are improved.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of one embodiment of a precision air conditioner of the present invention;
FIG. 2 is a flow chart of one embodiment of a method for controlling a precision air conditioner according to the present invention;
fig. 3 is a flowchart of another embodiment of a method for controlling a precision air conditioner according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "lower", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic structural diagram of a precision air conditioner according to an embodiment of the present invention, specifically, a schematic structural diagram of an indoor unit of a precision air conditioner.
As shown in fig. 1, the precision air conditioner includes an indoor heat exchanger 1, a humidifier 2, a fan 3, a condensate water tank 4, and a humidification water tank 5. When the machine room is cooled, the indoor heat exchanger 1 is used as an evaporator, and forms a refrigerant circulating system together with the compressor, the outdoor heat exchanger, the four-way valve and the like, so that the indoor air is cooled, and the cooled air is sent out under the action of the fan 3, so that the indoor environment is cooled. The condensed water tank 4 is located below the indoor heat exchanger 1 and is used for receiving condensed water of the indoor heat exchanger 1. The humidifying water tank 5 provides humidifying water for the humidifier 2, the humidifier 2 is used for humidifying dry air, and finally the air sent to the room by the fan 3 is low-temperature and high-humidity air so as to maintain stable low temperature and humidity in the machine room. The humidifier 2 may be implemented by a humidifying structure in the prior art. Preferably, the humidifier 2 adopts a wet film humidifier, so that the energy conservation and reliability of humidification are achieved.
In this embodiment, the condensed water tank 4 is formed with a first drain port 41 for discharging condensed water collected in the condensed water tank 4. Preferably, the first drain port 41 is formed at the bottom of the condensed water tank 4 so as to smoothly drain the condensed water in the condensed water tank 4. In order to guide the condensed water discharged from the first drain port 41 to a proper position, a first drain pipe (not shown) is connected to the first drain port 41. Furthermore, in some preferred embodiments, in consideration of the fact that the condensate tank 1 is in the negative pressure region of the fan 3, in order to prevent backflow and unsmooth drainage of the condensate in the first drain pipe, a check valve 42 is provided on the first drain pipe so that the water in the first drain pipe can be discharged only outward from the first drain port 41 and cannot flow backward. A condensed water tank level detection unit 43 is provided in the condensed water tank 4 for detecting the level of the condensed water tank 4, specifically, the set level of the condensed water tank 4. The condensed water tank level detecting unit 43 may be implemented by a level sensor, a float, or other structures capable of detecting a water level in the related art. Also, the set water level of the condensed water tank 4 is lower than the water level of the communication 44, as indicated by the broken line in the condensed water tank 4 in fig. 1.
The humidification water tank 5 is located below the humidifier 2, and the condensation water tank 4 is in communication with the humidification water tank 5, specifically, the two tanks are in communication at a communication 44. The humidifying water tank 5 is formed with a second drain port 51, a water inlet 52, a water delivery port 53 and an overflow port 54. The second water outlet 51 is connected to a second water outlet (not shown) for discharging water in the humidification water tank 5 to a proper position. The water inlet 52 is connected to a water inlet pipe (not shown) and further connected to an external humidification water source through the water inlet pipe, and water from the external humidification water source is input into the humidification water tank 5 through the water inlet 52. The water delivery port 53 is connected with a water delivery pipe (not labeled in the figure), and then supplies humidifying water for the humidifier 2 through the water delivery pipe. The overflow 54 is formed at a position near the top of the humidification water tank 2, and specifically, the height of the overflow 54 is higher than the height of the communication 44. Preferably, the second drain port 51 is formed at the bottom of the humidification water tank 5 so as to smoothly drain the condensed water in the humidification water tank 5. The water inlet 52 and the water delivery port 53 are also preferably formed at the bottom of the humidification water tank 5 to facilitate arrangement and connection of the structures.
The humidification water tank 5 is provided therein with a humidification water tank level detection unit, which in this embodiment includes a first humidification water tank level detection unit 59 capable of detecting a first water level and a second humidification water tank level detection unit 58 capable of detecting a second water level. Both the first and second humidification-tank water level detection units 59 and 58 may be implemented using a water level sensor, a float, or other structure capable of detecting a water level in the related art. Also, the first water level in the humidification water tank is higher than the second water level, and the first water level is lower than the water level at the communication 44, as shown by the dotted line in the humidification water tank 5 in fig. 1.
In order to control the discharge of the humidification water tank 5, a discharge control unit 55 for controlling whether or not the second discharge port 51 discharges water is formed on the second discharge pipe connected to the second discharge port 51. Preferably, the drain control unit 55 is a drain pump.
To control the water supply of the humidification water tank 5, a water supply control unit 56 is formed on the water supply pipe connected to the water inlet 52 to control whether the water inlet 52 is supplied with water. Preferably, the water inlet control unit 56 is a solenoid valve.
In this embodiment, the precision air conditioner further includes a water overflow detecting unit 6 for detecting whether or not the water overflow occurs in the water overflow vent 54. The overflow detecting unit 6 may be provided at a position close to the overflow opening 54, or may be provided on the floor on which water overflowing the overflow opening 54 drops. The overflow detecting unit 6 may be an overflow detecting sensor unit, or other structural units capable of detecting water leakage in the related art.
In other preferred embodiments, to control the supply of water from the humidifying water tank 5 to the humidifier 2, a water supply control unit 57 is formed on the water supply pipe connected to the water supply port 53 to control whether the humidifier 2 is supplied with water through the water supply port 53. Preferably, the water delivery control unit 57 is a water pump.
In this embodiment, the precision air conditioner further comprises an alarm unit (not shown), which is a structural unit that is connected with a host control unit (not shown) of the air conditioner in a wired/wireless communication manner, and can send out an alarm signal, such as one or more of an audio alarm signal, a light alarm signal and a voice alarm signal. And, the alarm unit gives an alarm signal at least when the water level of the condensed water tank 4 reaches the set water level, and/or the water level of the humidification water tank 5 reaches the first water level, and/or the overflow of the overflow port 54 occurs.
The precision air conditioner with the structure is provided with two water tanks, namely a condensation water tank 4 and a humidification water tank 5, wherein the two water tanks are mutually communicated at a specified height, and each water tank is provided with a water outlet for draining water; water level detection units are respectively arranged in the condensed water tank 4 and the humidifying water tank 5 to detect the water level of the water tank. In combination with the control of the method, when the water level of the condensed water tank 4 exceeds the set water level due to the failure of the first drainage port 41 or the first drainage pipe or the one-way valve 42 or the drainage failure of other reasons, an alarm signal is sent out by an alarm unit so as to process the drainage failure in time; when the water level of the condensed water tank 4 continues to rise, the water in the condensed water tank 4 can flow to the humidifying water tank 5 through the communication part 44, and the condensed water tank 4 is prevented from overflowing. When the water level of the humidification water tank 4 reaches the first water level due to the inflow of the condensed water and the like, the humidification water tank 4 can be controlled to forcibly drain water through the second water outlet 51, so that the overflow is avoided, and meanwhile, an alarm signal is sent to give an alarm. When the water level of the humidifying water tank 4 rises further and overflows, the overflow detecting unit 6 detects the overflow in time and gives an alarm again. Therefore, multi-stage water leakage safety early warning is formed when the condensate water tank 4 and the humidifying water tank 5 are matched with each other, sufficient time is provided for water leakage fault elimination, and the safety and reliability of the precision air conditioner are improved. In addition, in combination with the control of the method, the precision air conditioner with the structure can also realize an automatic water inlet function, a self-cleaning function of the humidifying water tank 5 and the like, and the specific realization of the functions is described in the following method.
Fig. 2 is a flowchart illustrating an embodiment of a method for controlling a precision air conditioner according to the present invention, and more particularly, an embodiment of a method for controlling a water leakage safety of a precision air conditioner having the structure of fig. 1.
As shown in fig. 2, this embodiment performs the water leakage safety control of the precision air conditioner using the following procedure:
step 21: and (4) operating the air conditioner, executing a water leakage safety control process, and acquiring a water level of the condensed water tank, a water level of the humidifying water tank and an overflow detection signal.
In connection with the structure of the precision air conditioner shown in fig. 1, the condensate tank water level is obtained by the output signal of the condensate tank water level detection unit 43, and the humidification tank water level is obtained by the output signals of the first humidification tank water level detection unit 59 and the second humidification tank water level detection unit 58. Then, the judgment of step 22, step 24 and step 26 is performed respectively according to the detection result, and different processing is performed according to the judgment result.
Step 22: and judging whether the water level of the condensed water tank reaches a set water level. If yes, go to step 23; otherwise, the water level detection of step 21 is continuously performed.
The set water level is a preset water level, which is a water level indicating that there is a possibility of a drainage failure of the condensed water tank 4.
When the air conditioner works, the condensed water generated by the indoor heat exchanger 1 flows into the condensed water tank 4, and the condensed water is discharged through the first water discharge port 41 and the check valve 42 through the first water discharge pipe under the action of gravity. By setting the appropriate caliber of the first drain port 41 and the pipe diameter of the first drain pipe, the level of the condensate water remaining in the condensate water tank 4 is lower than the set level in the normal drainage state. If a drainage fault of the condensate tank 4 occurs, for example, the first drainage port 41 or the first drainage pipe is blocked due to unknown reasons, so that drainage is not performed in a smooth water drainage check, the condensate water generated by the indoor heat exchanger 1 is continuously collected in the condensate tank 4, and the liquid level of the condensate tank 4 is continuously increased. When the liquid level rises to the set water level, step 23 is executed.
Step 23: and sending a first alarm signal.
If the water level of the condensed water tank 4 is judged to reach the set water level, a first alarm signal is sent out, for example, a first alarm signal is sent out through a host control unit of the air conditioner, the first alarm signal is a signal for alarming the condensed water tank 4 that a drainage fault occurs, and workers are informed to timely deal with the drainage fault problem of the condensed water tank 4. The first alarm signal may be one or more of an audible alarm signal, a light alarm signal, and a voice alarm signal.
In other preferred embodiments, the first alarm signal is sent out through the field alarm unit, and meanwhile, the first alarm information corresponding to the first alarm signal is sent to the appointed terminal remotely, so that terminal maintenance personnel can know the drainage fault information in time and process the fault in time on the field when no one is on the spot, and the safety and reliability of water leakage are improved.
In order to further improve the safety, the first alarm signal cannot be automatically reset, and the first alarm signal must be automatically reset manually, so that the alarm reminding can be continuously carried out when the corresponding fault is not processed, and the effectiveness and the reliability of the alarm are further improved.
Step 24: and judging whether the water level of the humidifying water tank reaches a first water level. If yes, go to step 25; otherwise, the water level detection of step 21 is continuously performed.
The first water level is a preset water level indicating that the water level of the humidification water tank 5 is too high.
During the operation of the air conditioner, during normal humidification, the water inlet and delivery of the humidification water tank 5 are controlled, for example, when the water level in the humidification water tank 5 is lower than the second water level, which is a water level value lower than the first water level, the water level in the humidification water tank 5 is low, the water inlet control unit 56 needs to be controlled to be opened to control the external humidification water source to flow into the humidification water tank 5 through the water inlet 52; when the water level in the humidification water tank 5 reaches the second water level, the water inlet control unit 56 is closed, the humidification water tank 5 stops water inlet, the water delivery control unit 57 controls the water delivery port 53 to supply water to the humidifier 2, the humidifier 2 humidifies air flowing through, and the humidified air is cooled by the indoor heat exchanger 1 and then sends the humid air into the room. In this process, the second drain control unit 55 controls the second drain port 51 not to drain water. Therefore, during normal humidification, the water level in the humidification water tank 5 is maintained at about the second water level without reaching the higher first water level by the combined control of the second humidification-tank water-level detection unit 58, the water intake control unit 56, and the water delivery control unit 57.
If the water level of the condensed water tank 4 is continuously raised due to a drainage failure, after the water level of the condensed water tank 4 is raised to the water level of the communication 44, the water in the condensed water tank 4 flows into the humidification water tank 5 through the communication 44, resulting in the continuous rise of the water level of the humidification water tank 5. When the upper position of the humidification water tank 5 rises to the first water level, step 25 is performed. Alternatively, step 25 is also performed when the water level of the humidification water tank 5 continues to rise to the first water level due to failure of the water inlet control unit 56 to stop water inlet when the water level of the humidification water tank 5 reaches the second water level.
Step 25: and sending out a second alarm signal.
If the water level of the humidification water tank 5 is judged to reach the first water level, which indicates that the water level of the humidification water tank 5 is too high, a second alarm signal is sent, for example, a host control unit of an air conditioner sends the second alarm signal, which is a signal for alarming that the water level of the humidification water tank 5 is too high and the risk of overflow possibly exists, and informs a worker to check and process the problem of water level rising of the humidification water tank 5 in time. The second alarm signal may be one or more of an audible alarm signal, a light alarm signal, and a voice alarm signal. Also, the drain of the second drain port 51 of the humidification water tank 5 is controlled by the drain control unit 55 at the same time as the second alarm signal is issued, so as to automatically lower the water level of the humidification water tank 5 as much as possible. Preferably, the second drain port 51 of the precision air conditioner is designed such that the amount of forcibly discharged water at this time is greater than the sum of the amount of the inflow water through the inlet port 52 and the amount of the water discharged from the condensate water tank 4 to the humidification water tank 5.
In other preferred embodiments, the water level of the humidifying water tank 5 is continuously detected during the forced draining of the second drain port 51, and if the water level is lower than the first water level, the second drain port 51 is controlled to stop draining at the drain control unit.
In other preferred embodiments, when the on-site alarm unit sends the second alarm signal, the second alarm information corresponding to the second alarm signal is sent to the designated terminal remotely, so that a terminal maintainer can know the drainage fault information in time and process the fault on site in time when no one is on site, and the safety and reliability of water leakage are improved.
In order to further improve the safety, the second alarm signal cannot be automatically reset, and the second alarm signal must be automatically reset manually, so that the alarm reminding can be continuously carried out when the corresponding fault is not processed, and the effectiveness and the reliability of the alarm are further improved.
Step 26: and judging whether overflow occurs. If yes, go to step 27; otherwise, the water level detection of step 21 is continuously performed.
Specifically, whether the water overflow occurs is judged according to the water overflow detection signal.
Step 27: and sending out a third alarm signal.
If the abnormal rising of the water levels of the condensate water tank 4 and the humidification water tank 5 is not removed in time, or the drainage structure of the humidification water tank 5 is broken, or the water level detecting units of both the water tanks are broken, etc., the water level of the humidification water tank 5 is continuously raised, and when the water level thereof is raised to the position of the overflow 54, water overflows from the overflow 54. And after the overflow is judged to occur, a third alarm signal is sent out, wherein the third alarm signal is a signal for alarming the overflow and can be one or more of a sound alarm signal, a light alarm signal and a voice alarm signal.
In other preferred embodiments, the third alarm signal is sent out through the field alarm unit, and meanwhile, third alarm information corresponding to the third alarm signal is sent to the appointed terminal remotely, so that terminal maintenance personnel can know the water overflow fault in time and process the fault in time on the field when no one is on the spot, and the safety and reliability of water leakage are improved.
In order to further improve the safety, the third alarm signal cannot be automatically reset, and the third alarm signal must be automatically reset manually, so that the alarm reminding can be continuously carried out when the corresponding fault is not processed, and the effectiveness and the reliability of the alarm are further improved.
And, as to the above-mentioned three alarm signals, have different emergency degree, the emergency degree of the first alarm signal, second alarm signal and third alarm signal strengthens sequentially, the emergency degree reflects directly through the alarm signal, in order to remind clearly.
By adopting the method, the multi-stage water leakage safety early warning can be realized, and sufficient time is provided for water leakage fault elimination, so that the safety and reliability of the precision air conditioner are improved, and the competitiveness of the product is improved.
Fig. 3 is a flow chart showing another embodiment of the control method of the precision air conditioner of the present invention, specifically, a flow chart showing an embodiment of a process including both a water leakage safety control process and a humidifying water tank self-cleaning control process.
As shown in fig. 3, together with the schematic view of the structure of the precision air conditioner of fig. 1, this embodiment performs control of the air conditioner using the following process.
Step 301: and starting the air conditioner to operate.
Step 302: and judging whether to execute a self-cleaning control process of the humidification water tank. If yes, go to step 303; otherwise, go to step 305.
Self-cleaning control of the humidification water tank is used as a specific mode and needs to be triggered to start. The starting can be triggered by a control key as required, or can be set in a program, and the starting is automatically triggered after certain conditions are met. For example, after the working time of the air conditioner reaches the set time, the starting is automatically triggered; or automatically triggering and starting after the indoor humidity meets a certain humidity value; or automatically triggering and starting according to the water quality of the water source and the working time, and the like.
Step 303: and controlling a second water outlet of the humidifying water tank to be in a water discharging state, simultaneously controlling a water delivery port of the humidifying water tank to stop water delivery, and controlling whether water is fed or not according to a second water level of the humidifying water tank.
The step is a process of executing self-cleaning control of the humidification water tank. When the humidification water tank self-cleaning process is performed, the second water discharge port 51 of the humidification water tank 5 is controlled to be in a water discharge state, that is, the second water discharge port 51 is controlled to be in a water discharge state by the water discharge control unit 55, and the water delivery port 53 of the humidification water tank 5 is controlled to stop delivering water, that is, the water delivery port 53 is controlled to stop delivering water by the water delivery control unit 57. Then, whether water is supplied or not is controlled according to the second water level of the humidification water tank 5.
Specifically, when the water level of the humidification water tank 5 is lower than the second water level, an external clean water source enters the humidification water tank 5 through the water inlet 52 and is then discharged through the second water discharge port 51 by the control of the water inlet control unit 56. If the discharge speed of the second water discharge port 51 is smaller than the water inflow speed of the water inlet port 52, the water inflow control unit 56 controls the water inlet port 52 to stop the inflow of water when the water level of the humidification water tank 5 reaches the second water level. By utilizing the circulation of water inlet and water discharge, dirt in the humidification water tank 5 is washed and discharged, and the internal self-cleaning of the humidification water tank 5 is realized. Because the content of suspended particles in the humidifying water tank 5 is higher in the self-cleaning process, the humidifying function of the air conditioner is suspended by controlling the water delivery port of the humidifying water tank to stop water delivery, and the unclean humidifying air caused by humidifying water with more impurities can be avoided.
Step 304: and judging whether the self-cleaning is finished or not. If yes, go to step 305; otherwise, go to step 303 to continue performing the self-cleaning process.
Whether the self-cleaning is finished or not can be judged by setting the self-cleaning time. And if the self-cleaning time reaches the set self-cleaning time, judging that the self-cleaning is finished.
Step 305: and executing a water leakage safety control process to obtain the water level of the condensed water tank, the water level of the humidifying water tank and an overflow detection signal.
This step is performed according to the judgment result of step 302 or step 304, and specifically, if the humidifying water tank self-cleaning control process is not required to be performed or is completed, a water leakage safety control process is performed to acquire the condensed water tank level, the humidifying water tank level and the overflow detection signal. Then, the judgment of step 306, step 308 and step 310 is performed respectively according to the detection result, and different processing is performed according to the judgment result.
Step 306: and judging whether the water level of the condensed water tank reaches a set water level. If yes, go to step 307; otherwise, the water level detection of step 305 is continued.
Step 307: and sending a first alarm signal to control the air conditioner to continue to operate.
The specific implementation process and purpose of step 306 and step 307 can refer to the description of step 22 and step 23 in the embodiment of fig. 2. In contrast to the embodiment of fig. 2, in step 307 of the embodiment of fig. 3, the air conditioner is controlled to continue to operate when the first alarm signal is issued. As described in the embodiment of fig. 2, the first alarm signal is an alarm signal with a low emergency degree, when the first alarm signal is sent out, there is an abnormality in the drainage of the condensed water tank 4, but the abnormality may be solved by the treatment of the humidifying water tank so as not to cause the risk of overflow, the main purpose of sending out the alarm signal is to perform early warning, and at this time, the air conditioner continues to operate without stopping to maintain normal cooling and humidifying treatment.
Step 308: and judging whether the water level of the humidifying water tank reaches a first water level. If yes, go to step 309; otherwise, the water level detection of step 305 is continued.
Step 309: and sending a second alarm signal and controlling the air conditioner to continue to operate.
The specific implementation process and purpose of step 308 and step 309 can refer to the description of step 24 and step 25 in the embodiment of fig. 2. In contrast to the embodiment of fig. 2, in step 309 of the embodiment of fig. 3, the air conditioner is controlled to continue to operate when the second alarm signal is issued. As described in the embodiment of fig. 2, the second alarm signal is an alarm signal with a medium urgency level, and an actual overflow problem does not occur yet, and the alarm signal is processed in time after the alarm, so that the hidden danger of overflow may be eliminated without an actual overflow risk, and the main purpose of sending the alarm signal is to perform an early warning, and at this time, the air conditioner continues to operate without stopping to maintain normal cooling and humidification processing.
Step 310: and judging whether overflow occurs. If yes, go to step 311; otherwise, the water level detection of step 305 is continued.
Step 311: and sending a third alarm signal and controlling the air conditioner to stop.
And after the occurrence of the overflow is detected, sending a third alarm signal and simultaneously controlling the air conditioner to stop so as to avoid other hazards caused by the continuous operation of the air conditioner.
In other preferred embodiments, in addition to the self-cleaning control process and the water leakage safety control process for the humidification water tank, the control method of the precision air conditioner further includes an automatic water inlet process, and in combination with the schematic structural diagram of the precision air conditioner shown in fig. 1, the automatic water inlet process specifically includes:
when the water level of the humidification water tank 5 reaches the second water level, controlling the water inlet 52 to stop water inflow;
when the water level of the humidification water tank 5 is lower than the second water level, the water inlet 52 is controlled to be filled with water.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The utility model provides a precision air conditioner, includes indoor heat exchanger and humidifier, its characterized in that still includes:
a condensed water tank which is positioned below the indoor heat exchanger and is provided with a first water outlet;
a condensed water tank water level detection unit disposed in the condensed water tank for detecting a water level of the condensed water tank;
the humidifying water tank is positioned below the humidifier, is communicated with the condensed water tank, and is provided with a second water outlet, a water delivery port, a water inlet and an overflow port, the second water outlet is connected with a second water outlet pipe, the water inlet is connected with a humidifying water source through a water inlet pipe, the water delivery port provides humidifying water for the humidifier through a water delivery pipe, and the height of the overflow port is higher than that of the communication position of the humidifying water tank and the condensed water tank;
a humidification water tank water level detection unit which is arranged in the humidification water tank and is used for detecting the water level of the humidification water tank;
the water inlet control unit is formed on the water inlet pipe and is used for controlling whether the water inlet enters water or not;
a drain control unit formed on the second drain pipe for controlling whether the second drain port drains water;
an overflow detecting unit for detecting whether the overflow port overflows;
the alarm unit is used for sending an alarm signal when the water level of the condensed water tank reaches a set water level and/or when the water level of the humidifying water tank reaches a first water level and/or the overflow port overflows; the set water level and the first water level are both lower than the water level at the communication position of the humidifying water tank and the condensed water tank.
2. A precision air conditioner according to claim 1 wherein a first drain pipe is connected to the first drain port, and a check valve is formed on the first drain pipe.
3. The precision air conditioner according to claim 1, wherein the first drain port is formed at a bottom of the condensed water tank; the second water outlet, the water delivery port and the water inlet are formed at the bottom of the humidifying water tank.
4. A precision air conditioner according to any one of claims 1 to 3, characterized in that the precision air conditioner further comprises:
a water delivery control unit formed on the water delivery pipe;
the drainage control unit, the water delivery control unit and the water inlet control unit are further set as follows:
after entering a specific working mode, the drainage control unit controls the second drainage port to be in a drainage state, and the water delivery control unit controls the water delivery port to stop delivering water; when the water level of the humidifying water tank reaches a second water level, the water inlet control unit controls the water inlet to stop feeding water, and when the water level of the humidifying water tank is lower than the second water level, the water inlet control unit controls the water inlet to feed water; the second water level is lower than the first water level.
5. A precision air conditioner according to any one of claims 1-3, characterized in that the precision air conditioner comprises a main machine control unit, the main machine control unit is set to control the air conditioner to stop when the alarm signal indicates that the overflow of the overflow port occurs, and to control the air conditioner to continue to operate when the alarm signal indicates that the water level of the condensed water tank reaches the set water level and/or when the water level of the humidifying water tank reaches the first water level.
6. A precision air conditioner control method, characterized in that the precision air conditioner is the precision air conditioner of claim 1, the control method comprises a water leakage safety control process, and the water leakage safety control process comprises:
when the water level of a condensed water tank in the precision air conditioner reaches a set water level, sending a first alarm signal;
when the water level of a humidifying water tank in the precise air conditioner reaches a first water level, a second alarm signal is sent out, and meanwhile, a water discharge control unit in the precise air conditioner is used for controlling a second water discharge port of the humidifying water tank to discharge water;
when the overflow of the overflow port of the humidifying water tank occurs, a third alarm signal is sent out;
the emergency degree of the first alarm signal, the second alarm signal and the third alarm signal is sequentially enhanced.
7. The precise air conditioner control method according to claim 6, wherein the water leakage safety control process further comprises:
the drain control unit controls the second drain port of the humidification water tank to stop draining water when the water level of the humidification water tank is lower than the first water level.
8. The precise air conditioner control method according to claim 6, wherein the water leakage safety control process further comprises:
when the first alarm signal and the second alarm signal are sent out, controlling the air conditioner to continue to operate;
and when the third alarm signal is sent out, controlling the air conditioner to stop.
9. The precision air conditioner control method according to any one of claims 6 to 8, wherein the control method further comprises an automatic water inlet process, the automatic water inlet process comprising:
when the water level of the humidifying water tank reaches a second water level, controlling the water inlet to stop water inflow;
when the water level of the humidifying water tank is lower than the second water level, controlling the water inlet to feed water;
the second water level is lower than the first water level.
10. The precision air conditioner control method according to claim 9, wherein the control method further comprises a humidifying water tank self-cleaning control process, the humidifying water tank self-cleaning control process comprising:
controlling a second water outlet of the humidifying water tank to be in a water discharging state, and simultaneously controlling a water delivery port of the humidifying water tank to stop water delivery;
when the water level of the humidifying water tank reaches the second water level, controlling the water inlet to stop water inflow;
and when the water level of the humidifying water tank is lower than the second water level, controlling the water inlet to feed water.
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| CN112628847B (en) | 2023-03-28 |
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