CN105546680B - The cooling system and its control method of outdoor unit - Google Patents
The cooling system and its control method of outdoor unit Download PDFInfo
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- CN105546680B CN105546680B CN201511031252.1A CN201511031252A CN105546680B CN 105546680 B CN105546680 B CN 105546680B CN 201511031252 A CN201511031252 A CN 201511031252A CN 105546680 B CN105546680 B CN 105546680B
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Classifications
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/24—Cooling of electric components
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of cooling system and its control method of outdoor unit.The cooling system of outdoor unit radiates to the electric-controlled box to outdoor unit, wherein the cooling system of outdoor unit includes gas-liquid separator, cyclic water tank, radiator, control module and temperature sensor；The first heat exchanger tube is provided in the gas-liquid separator, the second heat exchanger tube is provided in the radiator, the cyclic water tank includes the water storage tank for being stored with cooling medium and the water pump being set in the water storage tank, the water pump is connected to second heat exchanger tube, and the water storage tank is connected to first heat exchanger tube；The temperature sensor is electrically connected with control module, by the real time temperature data of the electric-controlled box of acquisition and to be delivered to the control module；The control module is electrically connected with water pump and controls water pump.Technical solution of the present invention can improve the radiating efficiency of the electric-controlled box of outdoor unit, maintain easily and install.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to the cooling system and its control method of a kind of outdoor unit.
Background technology
Currently, in the heat sink conception of the electric-controlled box of the outdoor unit of air-conditioning, most of heat sink conception is direct using radiator
Heat dissipation, also some scheme is radiated using system refrigerant.For the scheme directly to be radiated using radiator, due to
Traditional heat sinks radiating efficiency is low, cannot be satisfied electric-controlled box cooling requirements；For the scheme using the heat dissipation of system refrigerant,
It disclosure satisfy that the cooling requirements of electric-controlled box, but prodigious limitation brought to air-conditioning system structure, and deposited in transportational process
In the hidden danger of secondary refrigerant leakage；Especially when the electric-controlled box of outdoor unit needs detachable maintaining, the scheme to be radiated using system refrigerant,
It needs to dismantle a part of refrigerant component, very big inconvenience can be brought to repair, the rate of after-sales service is seriously affected, increases
The difficulty of repair.
In view of this, it is necessary to which the heat sink conception of above-mentioned electric-controlled box is further improved.
Invention content
The main object of the present invention is to provide a kind of cooling system of outdoor unit, it is intended to improve dissipating for the electric-controlled box of outdoor unit
The thermal efficiency is maintained easily and is installed.
To achieve the above object, the cooling system of outdoor unit proposed by the present invention, to be carried out to the electric-controlled box of outdoor unit
Heat dissipation, including gas-liquid separator, cyclic water tank, radiator, control module and temperature sensor；
It is provided with the first heat exchanger tube in the gas-liquid separator, the second heat exchanger tube is provided in the radiator, it is described to follow
Ring water tank includes the water storage tank for being stored with cooling medium and the water pump being set in the water storage tank, the water pump and described second
Heat exchanger tube is connected to, and the water storage tank is connected to first heat exchanger tube；
The temperature sensor is electrically connected with control module, by the real time temperature data of the electric-controlled box of acquisition and to convey
To the control module；
The control module is electrically connected with water pump, to when outdoor unit is opened, according to the electric-controlled box of acquisition outdoor unit
The temperature threshold T of temperature T and settingLAnd THCompare, meets TL≤T≤THWhen, control water pump presses underdrive operating, and according to adopting
The temperature T of electric-controlled box when collecting the first duration of underdrive operating1Compared with temperature threshold, meet TL≤T1≤TMWhen, control water pump is by low
Shelves operation, meets TM≤T1≤THWhen, control water pump is run by middle-grade, wherein TL、TM、THIt is the temperature threshold of setting, and TL
≤TM≤TH。
Preferably, the control module is additionally operable to：Judge whether compressor operating frequency changes in outdoor unit；
If compressor operating frequency reduces, water pump underdrive operating is controlled, and continue to adopt every the first duration of setting
Collect the temperature T of electric-controlled box1, and by temperature T1Compared with temperature threshold；
If compressor operating frequency is constant, the operation of water pump middle-grade is controlled, and continue to adopt every the second duration of setting
Collect the temperature T of electric-controlled box1, and by temperature T1Compared with temperature threshold；
If compressor operating frequency increases, in T1-T>10 DEG C, and T1≤THWhen, control water pump middle-grade operation, and acquire
The temperature T of electric-controlled box when middle-grade runs the second duration2；If T2≤TH, control water pump middle-grade operation, and every the second of setting
The temperature T of duration collection electric-controlled box1, and by temperature T1Compared with temperature threshold；If T2>TH, then the operation of water pump top grade is controlled, and
Acquire the temperature T of electric-controlled box when middle-grade runs the second duration3；If T3≤T2, then the operation of water pump top grade is controlled, and every setting
The second duration after continue acquire electric-controlled box temperature T1, and by temperature T1Compared with temperature threshold.
Preferably, the control module is additionally operable to：It is being judged as compressor operating frequency raising, and T1- T≤10 DEG C, and T1
≤THWhen, then the operation of water pump middle-grade is controlled, and every the temperature T of the second duration collection electric-controlled box1, and by temperature T1With temperature
Threshold value comparison.
Preferably, the control module is additionally operable to：If T3>T2When, control system is stopped.
Preferably, the control module is additionally operable to：If T>TH, then the operation of water pump top grade is controlled, and acquire high-grade operation the
The temperature T of electric-controlled box when two durations1, and by temperature T1Compared with temperature threshold.
The present invention also proposes a kind of control method of the cooling system of outdoor unit, includes the following steps：
Step S01, when outdoor unit is opened, the temperature T of the electric-controlled box of outdoor unit is acquired；
If step S02, TL≤T≤TH, then water pump is controlled by underdrive operating, and is acquired automatically controlled when the first duration of underdrive operating
The temperature T of box1；
Step S03, by the temperature T of acquisition1It is compared with the temperature threshold of setting；
If step S04, TL≤T1≤TM, then water pump is controlled by underdrive operating, and every the first duration collection of setting electricity
Control the temperature T of box1, and return to step S03；
If step S05, TM≤T1≤TH, then control water pump and run by middle-grade, and every the second duration collection of setting electricity
Control the temperature T of box1, and return to step S03, wherein TL、TM、THIt is the temperature threshold of setting.
Preferably, further include following steps after the step S05：
Step S06, judge whether compressor operating frequency changes in outdoor unit；
If step S07, compressor operating frequency reduces, water pump underdrive operating is controlled, and when the first of setting
The long temperature T for continuing to acquire electric-controlled box1, and return to step S03；
If step S08, compressor operating frequency is constant, the operation of water pump middle-grade is controlled, and when the second of setting
The long temperature T for continuing to acquire electric-controlled box1, and return to step S03；
If step S09, compressor operating frequency increases, in T1-T>10 DEG C, and T1≤THWhen, control water pump middle-grade fortune
Row, and acquire the temperature T of electric-controlled box when middle-grade runs the second duration2；
If step S10, T2≤TH, control water pump middle-grade operation, and the temperature of the second duration collection electric-controlled box every setting
Spend T1, and return to step S03；
If step S11, T2>TH, then the operation of water pump top grade is controlled, and acquire the temperature of electric-controlled box when middle-grade runs the second duration
Spend T3；
If step S12, T3≤T2, then the operation of water pump top grade is controlled, and continue acquisition electricity after the second duration of setting
Control the temperature T of box1, and return to step S03.
Preferably, further include following steps after the step S06：
If S13, compressor operating frequency increase, and T1- T≤10 DEG C, and T1≤THWhen, then the operation of water pump middle-grade is controlled, and
And every the temperature T of the second duration collection electric-controlled box1, and return to step S03.
Preferably, further include following steps after the step S11：
If T3>T2When, control system is stopped.
Preferably, further include step after the step S01：
If T>TH, then the temperature T of electric-controlled box when controlling the operation of water pump top grade, and acquiring the second duration of high-grade operation1, and turn
Enter step S03.
This programme technical solution uses and adds cyclic water tank on the basis of existing radiator radiates to outdoor unit, and
Supplement heat dissipation is carried out to outdoor unit by the water pump in cyclic water tank, to meet the cooling requirements of the electric-controlled box of outdoor unit, we
Case is maintained easily and is installed independently of refrigeration system.Specifically, according to the temperature T of the electric-controlled box of acquisition outdoor unit and setting
Temperature threshold TLAnd THCompare, meets TL≤T≤THWhen, control water pump presses underdrive operating, according to acquisition the first duration of underdrive operating
When electric-controlled box temperature T1Compared with temperature threshold, meet TL≤T1≤TMWhen, control water pump presses underdrive operating, meets TM≤T1≤
THWhen, control water pump is run by middle-grade.This programme by the electric-controlled box to acquisition outside temperature T and T1Carry out the temperature with setting
Threshold value comparison can rationally adjust the output power of water pump.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the block diagram of the cooling system of one embodiment of the invention outdoor unit；
Fig. 2 is the block diagram of the cooling system of another embodiment of the present invention outdoor unit；
Fig. 3 is the flow chart of the control method of the cooling system of one embodiment of the invention outdoor unit；
Fig. 4 is the flow chart of the control method of the cooling system of another embodiment of the present invention outdoor unit.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Gas-liquid separator | 101 | First connector |
| 102 | First input pipe | 103 | First heat exchanger tube |
| 104 | First efferent duct | 105 | Second connector |
| 20 | Cyclic water tank | 202 | Water storage tank |
| 203 | Water pump | 30 | First connecting tube |
| 40 | Radiator | 401 | Third connector |
| 402 | Second input pipe | 403 | Second heat exchanger tube |
| 404 | Second efferent duct | 405 | 4th connector |
| 50 | Second connecting tube | 60 | Third connecting tube |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining relative position relation, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The present invention proposes a kind of cooling system of outdoor unit, radiates to the electric-controlled box to outdoor unit.Specifically, should
The cooling system of outdoor unit is radiating to the chip in electric-controlled box.
Referring to Figures 1 and 2, Fig. 1 is the block diagram of the cooling system of one embodiment of the invention outdoor unit；Fig. 2 is this
Invent the block diagram of the cooling system of another embodiment outdoor unit.
In embodiments of the present invention, the cooling system of the outdoor unit, including gas-liquid separator 10, cyclic water tank 20, heat dissipation
Device 40, control module (not shown) and temperature sensor (not shown).The temperature sensor can be set in electric-controlled box, also may be used
To be set on electric-controlled box.
The first heat exchanger tube 103 is set in the gas-liquid separator 10, the second heat exchanger tube is provided in the radiator 40
403, the cyclic water tank 20 includes the water storage tank 202 for being stored with cooling medium and the water pump being set in the water storage tank 202
203, the water pump 203 is connected to second heat exchanger tube 403, and the water storage tank 202 is connected to first heat exchanger tube 103.
Gas-liquid separator 10, cyclic water tank 20 constitute main connecting line, the connecting line independently of refrigeration system outside, facilitate dimension
Shield and installation.The cooling medium can be water or oil etc..
The temperature sensor is electrically connected with control module, by the real time temperature data of the electric-controlled box of acquisition and to convey
To the control module.
The control module is electrically connected with water pump 203, to when outdoor unit is opened, according to the electric-controlled box of acquisition outdoor unit
Temperature T and setting temperature threshold TLAnd THCompare, meets TL≤T≤THWhen, control water pump 203 presses underdrive operating, and root
According to the temperature T of electric-controlled box when acquisition the first duration of underdrive operating1Compared with temperature threshold, meet TL≤T1≤TMWhen, control water pump
203 press underdrive operating, meet TM≤T1≤THWhen, control water pump is run by middle-grade, wherein TL、TM、THIt is the temperature threshold of setting
Value, and TL≤TM≤TH。
The temperature of the main electric-controlled box to being acquired according to temperature sensor of the control module is compared with preset temperature, with
The power of flexible modulation water pump 203 can make the output power of water pump 203 in suitable range, be conducive to optimize energy knot
Structure.Specifically, above-mentioned TL、TM、THIt can be a numerical value, can also be a numberical range, so that design needs.
This programme technical solution uses and adds cyclic water tank on the basis of existing radiator 40 radiates to outdoor unit
20, and supplement heat dissipation is carried out to outdoor unit by the water pump in cyclic water tank 20, it is wanted with meeting the heat dissipation of electric-controlled box of outdoor unit
It asks, and maintains easily and install.Specifically, according to the temperature threshold T of the temperature T and setting of the electric-controlled box of acquisition outdoor unitLAnd TH
Compare, meets TL≤T≤THWhen, control water pump presses underdrive operating, according to the temperature of electric-controlled box when acquisition the first duration of underdrive operating
T1Compared with temperature threshold, meet TL≤T1≤TMWhen, control water pump 203 presses underdrive operating, meets TM≤T1≤THWhen, control water
Pump is run by middle-grade.This programme by the electric-controlled box to acquisition outside temperature T and T1It carries out compared with the temperature threshold of setting, energy
Enough output powers for rationally adjusting water pump 203.
Fig. 2 is please referred to, in a specific embodiment, the first heat exchanger tube 103 of setting is defeated in the gas-liquid separator 10
Enter end to connect with the first connector 101 by the first input pipe 102, the output end of the first heat exchanger tube 103 passes through the first efferent duct 104
It is connect with the second connector 105；The input terminal of water storage tank 202 is connect by third connecting tube 60 with the second connector 105, water storage tank
202 output end is provided with water pump 203, which is connected to the first connecting tube 30；The second heat exchange is provided in radiator 40
Pipe 403, the input terminal of the second heat exchanger tube 403 are connected with the third being connect with the first connecting tube 30 by the second input pipe 402 and connect
First 401, the output end of the second heat exchanger tube 403 is connected with the 4th connector 405 by the second efferent duct 404, and the 4th connector 405 is logical
The second connecting tube 50 is crossed to connect with the first connector 101.Specifically, the first above-mentioned connecting tube 30, the second connecting tube 40 and third
Connecting tube 50 can be plastic flexible pipe, or have other pipes easy to install, quick detachable and that meet requirement.It is above-mentioned
, it is additionally provided with liquid level sensor in water pump 203, to detect the liquid level inside water storage tank 202, when liquid level is down to water storage tank
When 202 minimum work liquid level, outdoor unit control system has warning prompt, needs to supplement medium to water storage tank 202.The warning letter
Number can be display lamp show or display screen output, can also be alarm sound output, to remind the note of staff
Meaning.
In a preferred embodiment, the control module is additionally operable to：Judge in outdoor unit whether is compressor operating frequency
It changes.
If compressor operating frequency reduces, water pump underdrive operating is controlled, and continue to adopt every the first duration of setting
Collect the temperature T of electric-controlled box1, and by temperature T1Compared with temperature threshold；
If compressor operating frequency is constant, the operation of water pump middle-grade is controlled, and continue to adopt every the second duration of setting
Collect the temperature T of electric-controlled box1, and by temperature T1Compared with temperature threshold；
If compressor operating frequency increases, in T1-T>10 DEG C, and T1≤THWhen, control water pump middle-grade operation, and acquire
The temperature T of electric-controlled box when middle-grade runs the second duration2；If T2≤TH, control water pump middle-grade operation, and every the second of setting
The temperature T of duration collection electric-controlled box1, and by temperature T1Compared with temperature threshold；If T2>TH, then the operation of water pump top grade is controlled, and
Acquire the temperature T of electric-controlled box when middle-grade runs the second duration3；If T3≤T2, then the operation of water pump top grade is controlled, and every setting
The second duration after continue acquire electric-controlled box temperature T1, and by temperature T1Compared with temperature threshold.
In the present embodiment, in order to further to the adjusting of pump power, using judging compressor operating frequency in outdoor unit
Whether change further to be accurately controlled to the power of water pump.Specifically, when compressor operating frequency reduces, then control
Water pump underdrive operating processed；Compressor operating frequency is constant, then controls the operation of water pump middle-grade；Compressor operating frequency increases, then exists
T1-T>10 DEG C, and T1≤THWhen, control water pump middle-grade runs the temperature for utilizing temperature sensor to acquire electric-controlled box after the second duration
T2, in T2>TH, then control water pump top grade and run the temperature T for utilizing temperature sensor to acquire electric-controlled box after the second duration3, in T3≤
T2, then the operation of water pump top grade is controlled.When the present embodiment is reduced using compressor operating frequency, water pump gear is reduced；In compressor
When running frequency increases, and the temperature acquired is also above TH, water pump gear is increased, the temperature of electric-controlled box can be accurately controlled,
And it is capable of the supply power using water pump of maximal efficiency.This gives the power control modes of three kinds of water pumps, together
Reason, can also be by the power setting of water pump at four kinds or more than four kinds of power, process such as the above embodiments control of control
The mode of system.In the above embodiments, T1-T>10 DEG C, this 10 DEG C are increased preset temperature numerical value, which can
Specifically flexible design is required with basis.
In a preferred embodiment, the control module is additionally operable to：It is being judged as compressor operating frequency raising, and
T1- T≤10 DEG C, and T1≤THWhen, then it controls water pump and is run by middle-grade, and every the temperature T of the second duration collection electric-controlled box1,
And by temperature T1Compared with temperature threshold.
In the present embodiment, compressor operating frequency increases, and T1- T≤10 DEG C, water pump is with the Power operation of middle-grade.Generally
, compressor operating frequency increases, and system radiating requirement is higher and higher, is increased in a certain range in compressor operating frequency
When, so that the temperature of electric-controlled box is also had certain variation, as the temperature T of electric-controlled box1When-T≤10 DEG C, then show that the operation of water pump middle-grade is full
The cooling requirements of sufficient electric-controlled box control water pump with middle-grade Power operation, and in T1-T>10 DEG C, then show that water pump middle-grade is transported
Row may meet the cooling requirements of electric-controlled box, need that processing is further analyzed to such situation, referring particularly to above-mentioned reality
Apply the processing mode of example.
In a preferred embodiment, the control module is additionally operable to：If T3>T2When, control system is stopped.This reality
It applies in example, by acquiring temperature T of second duration to electric-controlled box3Afterwards, T3>T2When, show to control the operation of water pump top grade to electric-controlled box
When being radiated, the temperature of electric-controlled box still persistently increases, i.e., water pump cannot meet the cooling requirements of electric-controlled box, electric-control system
Thermic load alreadys exceed the maximum heat-sinking capability of cooling system, needs suitably to reduce outdoor unit load, reaches reduction electric-control system
Cooling requirements, in order to avoid not in time because of radiator heat-dissipation, caused system control chip continuous high temperature operation and damage.At this point,
May be used reduces the working frequency of compressor, to reduce the cooling requirements of electric-controlled box, and can send out information warning to remind work
Pay attention to as personnel.It is understood that when the frequency of compressor reduces, outdoor unit each section power cannot reach the work of saturation
Make state, is embodied in refrigeration or heating efficiency reduction of air-conditioning etc..
In a preferred embodiment, the control module is additionally operable to：If T>TH, then the operation of water pump top grade is controlled, and adopt
The temperature T of electric-controlled box when collection the second duration of high-grade operation1, and by temperature T1Compared with temperature threshold.In the present embodiment, in order to more
Water pump is utilized to radiate well, in T>TH, then the operation of water pump top grade is controlled.At this point, the temperature rise due to electric-controlled box is too fast, water pump
It is not satisfied by the cooling requirements of electric-controlled box with the operation of low-grade or middle-grade, the operation of water pump top grade can be directly controlled, quickly to electricity
Box heat dissipation is controlled, to ensure the stability of electric-controlled box work.
Fig. 3 is please referred to, in one embodiment, the present invention also provides a kind of control method of the cooling system of outdoor unit,
Include the following steps：
Step S01, when outdoor unit is opened, the temperature T of the electric-controlled box of outdoor unit is acquired；
If step S02, TL≤T≤TH, then water pump is controlled by underdrive operating, and is acquired automatically controlled when the first duration of underdrive operating
The temperature T of box1；
Step S03, by the temperature T of acquisition1It is compared with the temperature threshold of setting；
If step S04, TL≤T1≤TM, then water pump is controlled by underdrive operating, and every the first duration collection of setting electricity
Control the temperature T of box1, and return to step S03；
If step S05, TM≤T1≤TH, then control water pump and run by middle-grade, and every the second duration collection of setting electricity
Control the temperature T of box1, and return to step S03, wherein TL、TM、THIt is the temperature threshold of setting.
When outdoor unit is opened in the present embodiment, the electric-controlled box in outdoor unit is started to work, and the device in electric-controlled box is being run
During can continue to generate heat, and the heat can be built up, and the constant temperature of electric-controlled box is made to increase.The temperature of electric-controlled box
Degree continue it is raised during, radiator may be used and radiate to electric-controlled box, cannot meet electricity in radiator heat-dissipation efficiency
When controlling the cooling requirements of box, then achieve the purpose that reduce electric-controlled box temperature using cooling system heat dissipation simultaneously.Specifically, will acquisition
Temperature T and setting water pump temperature threshold TL、THCompare, by controlling water pump low grade or middle-grade, electric-controlled box can be improved
Radiating efficiency ensures electric-controlled box normal work.The temperature T of acquisition1With the temperature threshold T of the water pump of settingL、TM、THCompare, if TL
≤T1≤TM, then water pump is controlled by underdrive operating, if TM≤T1≤TH, then the operation of water pump middle-grade is controlled, power can be rationally utilized
Resource, saves the power consumption of water pump, while meeting the cooling requirements of outdoor unit.
In the present embodiment, the time of the first duration is 12-18min, and the time of the second duration is 2-8min, it is possible to understand that
Be, the first duration and the second duration can flexible design acording to the requirement of user, be not limited to above-mentioned numerical value.Specifically,
TLFor start-up temperature threshold value, TMFor medium temperature threshold value, THFor high temperature protection temperature threshold.
Fig. 4 is please referred to, further includes following steps after the step S05 in a specific embodiment：
Step S06, judge whether compressor operating frequency changes in outdoor unit；
If step S07, compressor operating frequency reduces, water pump underdrive operating is controlled, and when the first of setting
The long temperature T for continuing to acquire electric-controlled box1, and return to step S03；
If step S08, compressor operating frequency is constant, the operation of water pump middle-grade is controlled, and when the second of setting
The long temperature T for continuing to acquire electric-controlled box1, and return to step S03；
If step S09, compressor operating frequency increases, in T1-T>10 DEG C, and T1≤THWhen, control water pump middle-grade fortune
Row, and acquire the temperature T of electric-controlled box when middle-grade runs the second duration2；
If step S11, T2≤TH, control water pump middle-grade operation, and the temperature of the second duration collection electric-controlled box every setting
Spend T1, and return to step S03；
If T2>TH, then the operation of water pump top grade is controlled, and acquire the temperature T of electric-controlled box when middle-grade runs the second duration3；
If T3≤T2, then the operation of water pump top grade is controlled, and continue the temperature of acquisition electric-controlled box after the second duration of setting
Spend T1, and return to step S03.
In the present embodiment, in order to further to the adjusting of pump power, using judging compressor operating frequency in outdoor unit
Whether change further the power of water pump to be adjusted.Specifically, when compressor operating frequency reduces, then water is controlled
Pump underdrive operating；Compressor operating frequency is constant, then controls the operation of water pump middle-grade；Compressor operating frequency increases, then in T1-T>
10 DEG C, and T1≤THWhen, control water pump middle-grade runs the temperature T of acquisition electric-controlled box after the second duration2, in T2>TH, then water pump is controlled
The temperature T of electric-controlled box is acquired after top grade the second duration of operation3, in T3≤T2, then the operation of water pump top grade is controlled.The present embodiment uses
When compressor operating frequency reduces, water pump gear is reduced；When compressor operating frequency increases, and acquire temperature also above
TH, water pump gear is increased, the temperature of electric-controlled box can be accurately controlled, and be capable of the supply work(using water pump of maximal efficiency
Rate.This gives the power control modes of three kinds of water pumps, similarly, can also by the power setting of water pump at four kinds or
More than four kinds power, the mode of process such as the above embodiments control of control.
Fig. 4 is please referred to, further includes following steps after the step S06 in a preferred embodiment：
If compressor operating frequency increases, and T1- T≤10 DEG C then control the operation of water pump middle-grade, and every the second duration
Acquire the temperature T of electric-controlled box1, and return to step S03.
In the present embodiment, compressor operating frequency increases, and T1- T≤10 DEG C, water pump is with the Power operation of middle-grade.Generally
, compressor operating frequency increases, and system radiating requirement is higher and higher, is increased in a certain range in compressor operating frequency
When, so that the temperature of electric-controlled box is also had certain variation, as the temperature T of electric-controlled box1When-T≤10 DEG C, then show that the operation of water pump middle-grade is full
The cooling requirements of sufficient electric-controlled box control water pump with middle-grade Power operation, and in T1-T>10 DEG C, then show that water pump middle-grade is transported
Row may meet the cooling requirements of electric-controlled box, need that processing is further analyzed to such situation, referring particularly to above-mentioned reality
Apply the processing mode of example.
Further include following steps after the step S11 in a preferred embodiment please continue to refer to Fig. 4：
If compressor operating frequency increases, in T1-T>10 DEG C, and T3>T2When, control system is stopped.Pass through acquisition
Temperature T of second duration to electric-controlled box3Afterwards, T3>T2When, it is automatically controlled when showing that controlling the operation of water pump top grade radiates to electric-controlled box
The temperature of box still persistently increases, i.e., water pump cannot meet the cooling requirements of electric-controlled box, and the thermic load of electric-control system alreadys exceed
The maximum heat-sinking capability of cooling system needs suitably to reduce outdoor unit load, reaches the cooling requirements for reducing electric-control system, in order to avoid
Not in time because of radiator heat-dissipation, caused system control chip continuous high temperature runs and damages.At this point it is possible to using compression is reduced
The working frequency of machine to reduce the cooling requirements of electric-controlled box, and can send out information warning to remind staff to pay attention to.It can also
It is stopped using control system.The scheme of the warning can be that display lamp is shown or display screen exports, and can also be report
Alert sound output.
Fig. 3 is please referred to, further includes step after the step S01 in a preferred embodiment：
If T>TH, then the operation of water pump top grade is controlled, and every the temperature T of the second duration collection electric-controlled box1, and return to step
Rapid S03.
In the present embodiment, in order to preferably water pump be utilized to radiate, in T>TH, then the operation of water pump top grade is controlled.At this point, due to
The temperature rise of electric-controlled box is too fast, and water pump is not satisfied by the cooling requirements of electric-controlled box with the operation of low-grade or middle-grade, can be direct
The operation of water pump top grade is controlled, is quickly radiated to electric-controlled box, to ensure the stability of electric-controlled box work.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
In the scope of patent protection that other related technical areas are included in the present invention.
Claims (8)
1. a kind of cooling system of outdoor unit, radiates to the electric-controlled box to outdoor unit, which is characterized in that including gas-liquid point
From device, cyclic water tank, radiator, control module and temperature sensor；
It is provided with the first heat exchanger tube in the gas-liquid separator, the second heat exchanger tube, the recirculated water are provided in the radiator
Case includes the water storage tank for being stored with cooling medium and the water pump being set in the water storage tank, and the water pump exchanges heat with described second
Pipe is connected to, and the water storage tank is connected to first heat exchanger tube；
The temperature sensor is electrically connected with control module, described to be delivered to the real time temperature data of the electric-controlled box of acquisition
Control module；
The control module is electrically connected with water pump, to when outdoor unit is opened, according to the temperature T of the electric-controlled box of acquisition outdoor unit
With the temperature threshold T of settingLAnd THCompare, meets TL≤T≤THWhen, control water pump presses underdrive operating, and low-grade according to acquisition
The temperature T of electric-controlled box when running the first duration1Compared with temperature threshold, meet TL≤T1≤TMWhen, control water pump is transported as low-grade
Row, meets TM≤T1≤THWhen, control water pump is run by middle-grade, wherein TL、TM、THIt is the temperature threshold of setting, and TL≤TM
≤TH；
The control module is additionally operable to：Judge whether compressor operating frequency changes in outdoor unit；
If compressor operating frequency reduces, water pump underdrive operating is controlled, and continue acquisition electricity every the first duration of setting
Control the temperature T of box1, and by temperature T1Compared with temperature threshold；
If compressor operating frequency is constant, the operation of water pump middle-grade is controlled, and continue acquisition electricity every the second duration of setting
Control the temperature T of box1, and by temperature T1Compared with temperature threshold；
If compressor operating frequency increases, in T1-T>10 DEG C, and T1≤THWhen, control water pump middle-grade operation, and acquire middle-grade
The temperature T of electric-controlled box when running the second duration2；If T2≤TH, control water pump middle-grade operation, and every the second duration of setting
Acquire the temperature T of electric-controlled box1, and by temperature T1Compared with temperature threshold；If T2>TH, then the operation of water pump top grade is controlled, and acquire
The temperature T of electric-controlled box when middle-grade runs the second duration3；If T3≤T2, then the operation of water pump top grade is controlled, and every the of setting
Continue the temperature T of acquisition electric-controlled box after two durations1, and by temperature T1Compared with temperature threshold.
2. the cooling system of outdoor unit as described in claim 1, which is characterized in that the control module is additionally operable to：Judging
It is increased for compressor operating frequency, and T1- T≤10 DEG C, and T1≤THWhen, then the operation of water pump middle-grade is controlled, and when second
The temperature T of long acquisition electric-controlled box1, and by temperature T1Compared with temperature threshold.
3. the cooling system of outdoor unit as described in claim 1, which is characterized in that the control module is additionally operable to：If T3>T2
When, control system is stopped.
4. the cooling system of outdoor unit as described in claim 1, which is characterized in that the control module is additionally operable to：If T>TH,
The temperature T of electric-controlled box when then controlling the operation of water pump top grade, and acquiring the second duration of high-grade operation1, and by temperature T1With temperature threshold
Compare.
5. a kind of control method of the cooling system of outdoor unit, which is characterized in that include the following steps：
Step S01, when outdoor unit is opened, the temperature T of the electric-controlled box of outdoor unit is acquired；
If step S02, TL≤T≤TH, then electric-controlled box when controlling water pump by underdrive operating, and acquiring the first duration of underdrive operating
Temperature T1；
Step S03, by the temperature T of acquisition1It is compared with the temperature threshold of setting；
If step S04, TL≤T1≤TM, then water pump is controlled by underdrive operating, and every the first duration collection electric-controlled box of setting
Temperature T1, and return to step S03；
If step S05, TM≤T1≤TH, then control water pump and run by middle-grade, and every the second duration collection electric-controlled box of setting
Temperature T1, and return to step S03, wherein TL、TM、THIt is the temperature threshold of setting；
Step S06, judge whether compressor operating frequency changes in outdoor unit；
If step S07, compressor operating frequency reduces, control water pump underdrive operating, and every the first duration of setting after
The temperature T of continuous acquisition electric-controlled box1, and return to step S03；
If step S08, compressor operating frequency is constant, control water pump middle-grade operation, and every the second duration of setting after
The temperature T of continuous acquisition electric-controlled box1, and return to step S03；
If step S09, compressor operating frequency increases, in T1-T>10 DEG C, and T1≤THWhen, control water pump middle-grade operation, and
Acquire the temperature T of electric-controlled box when middle-grade runs the second duration2；
If step S10, T2≤TH, control water pump middle-grade operation, and the temperature of the second duration collection electric-controlled box every setting
T1, and return to step S03；
If step S11, T2>TH, then the operation of water pump top grade is controlled, and acquire the temperature T of electric-controlled box when middle-grade runs the second duration3；
If step S12, T3≤T2, then the operation of water pump top grade is controlled, and continue acquisition electric-controlled box after the second duration of setting
Temperature T1, and return to step S03.
6. the control method of the cooling system of outdoor unit as claimed in claim 5, which is characterized in that after the step S06
Further include following steps：
If S13, compressor operating frequency increase, and T1- T≤10 DEG C, and T1≤THWhen, then the operation of water pump middle-grade is controlled, and every
Every the temperature T of the second duration collection electric-controlled box1, and return to step S03.
7. the control method of the cooling system of outdoor unit as claimed in claim 5, which is characterized in that after the step S11
Further include following steps：
If T3>T2When, control system is stopped.
8. the control method of the cooling system of outdoor unit as claimed in claim 5, which is characterized in that after the step S01
It further include step：
If T>TH, then the temperature T of electric-controlled box when controlling the operation of water pump top grade, and acquiring the second duration of high-grade operation1, and it is transferred to step
Rapid S03.
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| CN201511031252.1A CN105546680B (en) | 2015-12-30 | 2015-12-30 | The cooling system and its control method of outdoor unit |
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| CN201511031252.1A CN105546680B (en) | 2015-12-30 | 2015-12-30 | The cooling system and its control method of outdoor unit |
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| CN105546680B true CN105546680B (en) | 2018-07-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765921A (en) * | 2016-12-08 | 2017-05-31 | 杭州浙鼎新材料科技有限公司 | Intelligent air condition detecting system and its method for visualizing |
| CN107036353A (en) * | 2017-05-15 | 2017-08-11 | 广东美的暖通设备有限公司 | Air conditioner electric control module heat dissipating system, control method and air conditioner |
| CN113212110B (en) * | 2021-06-23 | 2023-04-11 | 珠海格力电器股份有限公司 | Method, device and system for optimizing working environment of refrigerating unit of refrigerator car |
| CN114909724A (en) * | 2022-04-18 | 2022-08-16 | 青岛海尔空调器有限总公司 | Method and device for cooling outdoor unit of air conditioner, air conditioner and storage medium |
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| CN202792289U (en) * | 2012-07-17 | 2013-03-13 | 美的集团武汉制冷设备有限公司 | Radiator component used for electric control box of air-conditioning outdoor unit |
| CN203837144U (en) * | 2014-04-28 | 2014-09-17 | 广东美的暖通设备有限公司 | Air conditioner outdoor unit |
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| KR20120135771A (en) * | 2011-06-07 | 2012-12-17 | 엘지전자 주식회사 | Outdoor unit for an air conditioner and a control method the same |
| JP5408285B2 (en) * | 2012-04-27 | 2014-02-05 | ダイキン工業株式会社 | Refrigerator, electrical component unit and refrigeration system |
| JP6223262B2 (en) * | 2014-04-04 | 2017-11-01 | 三菱電機株式会社 | Air conditioner outdoor unit |
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| CN202792289U (en) * | 2012-07-17 | 2013-03-13 | 美的集团武汉制冷设备有限公司 | Radiator component used for electric control box of air-conditioning outdoor unit |
| CN203837144U (en) * | 2014-04-28 | 2014-09-17 | 广东美的暖通设备有限公司 | Air conditioner outdoor unit |
| CN104807114A (en) * | 2015-03-19 | 2015-07-29 | 珠海格力电器股份有限公司 | Cooling system and air conditioning system |
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