CN104848484B - The control method and air conditioner of air conditioner - Google Patents
The control method and air conditioner of air conditioner Download PDFInfo
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- CN104848484B CN104848484B CN201510238845.9A CN201510238845A CN104848484B CN 104848484 B CN104848484 B CN 104848484B CN 201510238845 A CN201510238845 A CN 201510238845A CN 104848484 B CN104848484 B CN 104848484B
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- outdoor environment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention proposes a kind of control method of air conditioner and a kind of air conditioner, wherein, this method comprises the following steps：Detect outdoor environment temperature；When outdoor environment temperature is less than the first preset temperature, control air conditioner enters cryogenic refrigeration pattern, and when air conditioner is in cryogenic refrigeration pattern, the opening and closing of stop valve are controlled according to outdoor environment temperature.The control method of the air conditioner of the embodiment of the present invention, avoid compressor from liquid hit phenomenon occur by reducing the heat exchange area of condenser, so as to ensure that the normal kind of refrigeration cycle of refrigeration system, be achieved the cryogenic refrigeration function of air conditioner.
Description
Technical field
The present invention relates to household electrical appliance technical field, the control method of more particularly to a kind of air conditioner and a kind of air conditioner.
Background technology
Air conditioner is widely used all over the world.Generally, when environment temperature is higher, we use air-conditioning
The refrigerating function of device reduces indoor temperature, when environment temperature is relatively low, Indoor Temperature is improved using the heat-production functions of air conditioner
Degree.But under some special environment, such as North America, the computer room of Northern Europe Deng Ji cryogenic regions, restaurant kitchen and the family using fireplace
In front yard, it is often necessary to the refrigerating function of air conditioner is used under extremely low environment temperature.
At present, when environment temperature is relatively low, correlation technique realizes refrigeration by reducing the rotating speed of outdoor fan of air conditioner
Function.But outdoor fan rotating speed can not be reduced infinitely, when environment temperature is low arrives certain limit, minimum rotation speed of fan can not
Meet refrigerating function at this temperature, problems with often occurs：1st, compressor liquid hammer；2nd, system high-low pressure pressure difference is small, cold
Matchmaker's circulation is short of power；If the 3rd, function selection start and stop, the stability of system is poor, fan-out capability it is difficult to ensure that；If the 4th, run into
The extreme weathers such as typhoon, too low outdoor fan rotating speed easily cause the damage of blower motor.So in correlation technique condition
Under, it is difficult to realize super low temperature refrigeration.
The content of the invention
It is contemplated that at least solves above-mentioned technical problem to a certain extent.
Therefore, first purpose of the present invention is to propose a kind of control method of air conditioner, compressor can be avoided to go out
Existing liquid hit phenomenon, realize the cryogenic refrigeration function of air conditioner.
Second object of the present invention is to propose a kind of air conditioner.
For the above-mentioned purpose, according to a first aspect of the present invention embodiment propose a kind of air conditioner control method, wherein
The air conditioner includes compressor, outdoor fan and condenser, the condenser have total inlet pipe, total escape pipe and with institute
State the multichannel time air inlet pipe that total inlet pipe is connected, and in the multichannel time air inlet pipe at least secondary air inlet pipe is provided with and cut all the way
Only to control the heat exchange area of the condenser, the control method comprises the following steps valve：Detect outdoor environment temperature；Work as institute
When stating outdoor environment temperature and being less than the first preset temperature, the air conditioner is controlled to enter cryogenic refrigeration pattern, and in the air-conditioning
When device is in the cryogenic refrigeration pattern, the opening and closing of the stop valve are controlled according to the outdoor environment temperature.
The control method of air conditioner according to embodiments of the present invention, by detecting outdoor environment temperature, when outdoor environment temperature
When degree is less than the first preset temperature, control air conditioner enters cryogenic refrigeration pattern, and when air conditioner is in cryogenic refrigeration pattern,
The opening and closing of stop valve are controlled according to outdoor environment temperature.In the outdoor environment of ultralow temperature, the outdoor fan of air conditioner
Rotating speed can not be reduced infinitely, ensure that compressor occurs without liquid hit phenomenon by reducing the heat exchange area of condenser, so as to ensure
Refrigeration system normal kind of refrigeration cycle, is achieved the refrigerating function of air conditioner.
In addition, the control method of air conditioner according to the above embodiment of the present invention can also have technology additional as follows special
Sign：
When the air conditioner is in the cryogenic refrigeration pattern, wherein,
If the outdoor environment temperature is more than the second preset temperature, the stop valve is controlled to open, wherein, described the
Two preset temperatures are less than first preset temperature；
If the outdoor environment temperature is less than or equal to second preset temperature, the stop valve is controlled to close.
Second preset temperature determines according to the minimum frequency of the compressor and the minimum speed of the outdoor fan.
The control method of the air conditioner, in addition to：
Detect the middle portion temperature of the condenser；
The rotating speed of the outdoor fan is adjusted according to the middle portion temperature of the condenser.
When the air conditioner enters heating mode or normal refrigerating mode, the stop valve is controlled to open.
Second aspect of the present invention embodiment provides a kind of air conditioner, including compressor；Outdoor fan；Condenser, it is described
Condenser has total inlet pipe, total escape pipe and the multichannel time air inlet pipe being connected with the total inlet pipe, and the multichannel
In secondary air inlet pipe at least secondary air inlet pipe is provided with stop valve to control the heat exchange area of the condenser all the way；Temperature detection mould
Block, for detecting outdoor environment temperature；Control module, the control module are used for pre- less than first in the outdoor environment temperature
If control the air conditioner to enter cryogenic refrigeration pattern during temperature, and when the air conditioner is in the cryogenic refrigeration pattern,
The control module controls the opening and closing of the stop valve according to the outdoor environment temperature.
The air conditioner of the embodiment of the present invention, by detecting outdoor environment temperature, preset when outdoor environment temperature is less than first
During temperature, control air conditioner enters cryogenic refrigeration pattern, and when air conditioner is in cryogenic refrigeration pattern, according to outdoor environment temperature
The opening and closing of degree control stop valve.In the outdoor environment of ultralow temperature, the outdoor fan rotating speed of air conditioner can not infinitely drop
It is low, ensure that compressor occurs without liquid hit phenomenon by reducing the heat exchange area of condenser, so as to ensure that refrigeration system is normal
Kind of refrigeration cycle, be achieved the refrigerating function of air conditioner.
In addition, air conditioner according to the above embodiment of the present invention can also have technical characteristic additional as follows：
When the air conditioner is in the cryogenic refrigeration pattern, wherein,
If the outdoor environment temperature is more than the second preset temperature, the control module then controls the stop valve to open
Open, wherein, second preset temperature is less than first preset temperature；
If the outdoor environment temperature is less than or equal to second preset temperature, the control module then controls described
Stop valve is closed.
The control module is according to obtaining the minimum frequency of the compressor and the minimum speed of the outdoor fan
Second preset temperature.
The temperature detecting module is additionally operable to detect the middle portion temperature of the condenser, and the control module is according to described cold
The middle portion temperature of condenser adjusts the rotating speed of the outdoor fan.
When the air conditioner enters heating mode or normal refrigerating mode, the control module controls the stop valve
Open.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the flow chart according to the control method of the air conditioner of one embodiment of the invention；
Fig. 2 is the schematic diagram according to the condenser of one embodiment of the invention；
Fig. 3 is the flow chart according to the control method of the air conditioner of another embodiment of the present invention；
Fig. 4 is the flow chart according to the control method of the air conditioner of another embodiment of the invention；
Fig. 5 is the structured flowchart according to the air conditioner of one embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint are relative
Importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Below with reference to the accompanying drawings the control method and air conditioner of air conditioner according to embodiments of the present invention are described.
Fig. 1 is the flow chart according to the control method of the air conditioner of one embodiment of the invention.
In an embodiment of the present invention, air conditioner includes compressor, outdoor fan and condenser.Wherein, condenser has
Total inlet pipe, total escape pipe and the multichannel time air inlet pipe being connected with total inlet pipe, and at least one in multichannel time air inlet pipe
Road time air inlet pipe is provided with stop valve to control the heat exchange area of condenser.
As shown in figure 1, the control method of air conditioner according to embodiments of the present invention, comprises the following steps：
S101, detect outdoor environment temperature.
Specifically, outdoor environment temperature can be detected by the temperature sensor being disposed in the outdoor.
S102, when outdoor environment temperature is less than the first preset temperature, control air conditioner enters cryogenic refrigeration pattern, and
When air conditioner is in cryogenic refrigeration pattern, the opening and closing of stop valve are controlled according to outdoor environment temperature.
In one embodiment of the invention, the first preset temperature can be 0 DEG C.Cryogenic refrigeration pattern is in air conditioner
When, if outdoor environment temperature is more than the second preset temperature, control stop valve is opened；If outdoor environment temperature is less than or waited
In the second preset temperature, then stop valve is controlled to close.Wherein, the second preset temperature is less than the first preset temperature, for example, second is pre-
If temperature can be -15 DEG C.
In one embodiment of the invention, the second preset temperature can be according to the minimum frequency of compressor and outdoor fan
Minimum speed determines.Specifically, the second preset temperature be worked with minimum frequency in compressor, outdoor fan is with minimum speed work
Under conditions of work, ensure that compressor occurs without the minimum outdoor environment temperature corresponding to liquid hit phenomenon.
In one embodiment of the invention, stop valve can be the unidirectional stop valve on airintake direction.
In one embodiment of the invention, each air inlet pipe divides some tributaries again in the multichannel time air inlet pipe of condenser
It is equal into condenser pipe, generally the tributary quantity after time air inlet pipe.For convenience of description, in the embodiment of the present invention to condense utensil
There is two-way time air inlet pipe, and the tributary that time air inlet pipe has two inflow condenser pipes per road is described.As shown in Fig. 2 always enter
Tracheae 1 connects with two-way time air inlet pipe 31 and 32, wherein, secondary air inlet pipe 32 is provided with stop valve 4, and secondary air inlet pipe 31 passes through two
Tributary connects part A condenser pipe, and secondary air inlet pipe 32 connects part B condenser pipe by two tributaries.So as to the gas in time air inlet pipe
Body can enter pipeline 5 after part A condenser pipe, and enter total escape pipe 2 further across condenser pipe.Gas in secondary air inlet pipe
Body can enter total escape pipe 2 after part B condenser pipe further across the condenser pipe connected with total escape pipe 2.
When stop valve is opened, gas to be condensed enters time air inlet pipe 31 and 32 by total inlet pipe 1, then by each
From tributary flow into condenser all condenser pipes；When stop valve is closed, gas to be condensed is by can only after total inlet pipe 1
Into the secondary air inlet pipe 31 without stop valve, the tributary connected with time air inlet pipe 31 is then only entered, and it is cold by part A in Fig. 2
Solidifying pipe is condensed.
When air conditioner is in cryogenic refrigeration pattern, if outdoor environment temperature is more than the second preset temperature, refrigeration is realized
It can ensure that compressor occurs without liquid hit phenomenon by reducing outdoor fan rotating speed during function, control stop valve 4 is opened so that cold
Condenser is worked with maximum condensation area.If outdoor environment temperature is less than or equal to the second preset temperature, in condenser with maximum
When condensation area works, even if outdoor fan rotating speed minimizes, compressor liquid hit phenomenon still occurs.In such case
Under, stop valve 4 can be closed, gas can not be flowed into condenser pipe by the secondary air inlet pipe 32 where stop valve, and nothing can only be passed through
The secondary air inlet pipe stream 31 of stop valve enters condenser pipe, so as to which in fig. 2, part B condenser pipe is not involved in exchanging heat, and thus reduces cold
The heat exchange area of condenser, the middle portion temperature of condenser rise, even if so as to which outdoor fan rotating speed is not low enough, prevented also from compressor
The generation of liquid hit phenomenon.
The control method of the air conditioner of the embodiment of the present invention, by detecting outdoor environment temperature, when outdoor environment temperature is small
When the first preset temperature, control air conditioner enters cryogenic refrigeration pattern, and when air conditioner is in cryogenic refrigeration pattern, according to
Outdoor environment temperature controls the opening and closing of stop valve.In the outdoor environment of ultralow temperature, the outdoor fan rotating speed of air conditioner
It can not infinitely reduce, avoid compressor from liquid hit phenomenon occur by reducing the heat exchange area of condenser, so as to ensure that refrigeration
The normal kind of refrigeration cycle of system, it is achieved the cryogenic refrigeration function of air conditioner.
Fig. 3 is the flow chart according to the control method of the air conditioner of another embodiment of the present invention.Optionally, such as Fig. 3 institutes
Show, the control method of the air conditioner of the embodiment of the present invention may also include：
S103, if outdoor environment temperature is more than or equal to the first preset temperature, control air conditioner enters heating mode
Or normal refrigerating mode, and control stop valve to open.Condenser can not be reduced under normal refrigerating mode or heating mode
Heat exchange area, so control stop valve is opened, you can make air conditioner normal work.
In addition, in one embodiment of the invention, under cryogenic refrigeration pattern, the rotating speed of outdoor fan of air conditioner can root
It is adjusted according to the middle portion temperature of condenser.As shown in figure 4, the control method of air conditioner according to an embodiment of the invention,
It may also include the process of regulation outdoor fan of air conditioner rotating speed.Regulation outdoor fan of air conditioner rotating speed comprises the following steps that：
S104, detect the middle portion temperature of condenser.
S105, the rotating speed of outdoor fan is adjusted according to the middle portion temperature of condenser.
In an embodiment of the present invention, can be according to the temperature range regulation outdoor fan where the middle portion temperature of condenser
Rotating speed.Specifically, as the middle portion temperature of condenser raises (when stop valve is closed), the rotating speed of outdoor fan is improved, with cold
The middle portion temperature of condenser reduces (when stop valve is opened), reduces the rotating speed of outdoor fan.
Wherein, for same outdoor fan rotating speed, when the middle portion temperature of condenser gradually rises, the outdoor fan
Temperature range corresponding to rotating speed is higher than when the middle portion temperature of condenser progressively declines.
When the middle portion temperature of condenser rises to second temperature value by the first temperature value, the rotating speed of outdoor fan can be by
One tachometer value is improved to the second tachometer value；When the middle portion temperature of condenser drops to four temperature values by the 3rd temperature value, room
The rotating speed of outer blower fan can be reduced to the 4th tachometer value by the 3rd tachometer value.For example, the sky in one embodiment of the present of invention
Device is adjusted under cryogenic refrigeration pattern, when the middle portion temperature for detecting condenser rises to 35 DEG C and 45 DEG C respectively by 25 DEG C, room
The rotating speed of outer blower fan is respectively increased to 300 revolutions per minute and 400 revolutions per minute by 200 revolutions per minute；When the middle part temperature for detecting condenser
Degree is when dropping to 30 DEG C and 20 DEG C respectively by 40 DEG C, the rotating speed of outdoor fan by 400 revolutions per minute be reduced to respectively 300 revolutions per minute with
200 revolutions per minute.Wherein, such as when outdoor fan rotating speed is all 300 revolutions per minute, when the middle portion temperature of condenser gradually rises
When, the temperature range of the middle portion temperature of condenser corresponding to the rotating speed is 35 DEG C to 45 DEG C；When condenser middle portion temperature progressively
During decline, the temperature range of the middle portion temperature of condenser corresponding to the rotating speed is 20 DEG C to 30 DEG C.
Thus, air conditioner controls condenser heat-transfer surface under cryogenic refrigeration pattern according to the height of outdoor environment temperature
Product size, makes air conditioner freeze under ultra-low temperature surroundings and occur without liquid hit phenomenon, while by changing the rotating speed of outdoor fan
To change the middle portion temperature of condenser, so as to avoid condenser from further being carried because internal temperature is too high or too low failure
Rise the refrigeration under ultra-low temperature surroundings of air conditioner.
In order to realize above-described embodiment, the present invention also proposes a kind of air conditioner.
Fig. 5 is the structured flowchart according to the air conditioner of one embodiment of the invention.
As shown in figure 5, air conditioner according to embodiments of the present invention, including indoor set 10 and outdoor unit 20.Outdoor unit 20 wraps
Include compressor 21, outdoor fan 22, condenser 23, temperature detecting module 24 and control module 25.
Specifically, indoor set 10 is used for the cold and hot exchange of indoor and outdoor.
Compressor 21 is used for the gas that the refrigerant gas of low-temp low-pressure is compressed into HTHP.
Condenser 23 has total inlet pipe, total escape pipe and the multichannel time air inlet pipe being connected with total inlet pipe, and more
In time air inlet pipe of road at least secondary air inlet pipe is provided with stop valve to control the heat exchange area of condenser all the way.
Temperature detecting module 24 is used to detect outdoor environment temperature.
Control module 25 is used to control air conditioner to enter cryogenic refrigeration when outdoor environment temperature is less than the first preset temperature
Pattern, and when air conditioner is in cryogenic refrigeration pattern, control module 25 controls the unlatching of stop valve according to outdoor environment temperature
And closing.
Specifically, in one embodiment of the invention, the first preset temperature can be 0 DEG C.Low temperature system is in air conditioner
During chill formula, if outdoor environment temperature is more than the second preset temperature, control stop valve is opened；If outdoor environment temperature is small
In or equal to the second preset temperature, then stop valve is controlled to close.Wherein, the second preset temperature is less than the first preset temperature, for example,
Second preset temperature can be -15 DEG C.
In one embodiment of the invention, the second preset temperature can be according to the minimum frequency and outdoor fan of compressor 21
22 minimum speed determines.Specifically, the second preset temperature be worked with minimum frequency in compressor 21, outdoor fan 22 is with most
Under conditions of small rotary speed working, ensure that compressor 21 occurs without the minimum outdoor environment temperature corresponding to liquid hit phenomenon.
In one embodiment of the invention, stop valve can be the unidirectional stop valve on airintake direction.The one of the present invention
In individual embodiment, each air inlet pipe divide some tributaries to enter condenser pipe again in the multichannel of condenser time air inlet pipe, it is usual it is secondary enter
Retrotracheal tributary quantity is equal.For convenience of description, there is two-way time air inlet pipe with condenser in the embodiment of the present invention, and often
The tributary that road time air inlet pipe has two inflow condenser pipes is described.Specifically, Fig. 2, total inlet pipe 1 and two-way be can refer to
Air inlet pipe 31 connects with 32, wherein, secondary air inlet pipe 32 is provided with stop valve 4, and secondary air inlet pipe 31 connects part A by two tributaries
Condenser pipe, secondary air inlet pipe 32 connect part B condenser pipe by two tributaries.So as to which the gas in time air inlet pipe can pass through part A
Enter pipeline 5 after condenser pipe, and enter total escape pipe 2 further across condenser pipe.Gas in secondary air inlet pipe can pass through part B
Enter total escape pipe 2 further across the condenser pipe connected with total escape pipe 2 after condenser pipe.
When stop valve 4 is opened, gas to be condensed enters time air inlet pipe 31 and 32 by total inlet pipe 1, then passes through
Respective tributary flows into all condenser pipes of condenser；When stop valve is closed, gas to be condensed passes through after total inlet pipe 1
The secondary air inlet pipe 31 without stop valve can be entered, then only enter the tributary connected with time air inlet pipe 31, and pass through part A in Fig. 2
Condenser pipe is condensed.
When air conditioner is in cryogenic refrigeration pattern, if outdoor environment temperature is more than the second preset temperature, refrigeration is realized
Can ensure that compressor 21 occurs without liquid hit phenomenon by reducing the rotating speed of outdoor fan 22 during function, control stop valve 4 open with
Condenser 23 is set to be worked with maximum condensation area.If outdoor environment temperature is less than or equal to the second preset temperature, in condenser
23 with maximum condensation area when being worked, even if the rotating speed of outdoor fan 22 minimizes, compressor liquid hit phenomenon still occurs.
In this case, stop valve 4 can be closed, gas can not be flowed into condenser pipe by the secondary air inlet pipe 32 where stop valve, and only
Condenser pipe can be entered by the secondary air inlet pipe stream 31 without stop valve, so as to which in fig. 2, part B condenser pipe is not involved in exchanging heat, thus
The heat exchange area of condenser is reduced, the middle portion temperature of condenser rises, even if so as to which outdoor fan rotating speed is not low enough, can also prevented
The only generation of compressor liquid hit phenomenon.
The air conditioner of the embodiment of the present invention, by detecting outdoor environment temperature, preset when outdoor environment temperature is less than first
During temperature, control air conditioner enters cryogenic refrigeration pattern, and when air conditioner is in cryogenic refrigeration pattern, according to outdoor environment temperature
The opening and closing of degree control stop valve.In the outdoor environment of ultralow temperature, the outdoor fan rotating speed of air conditioner can not infinitely drop
It is low, avoid compressor from liquid hit phenomenon occur by reducing the heat exchange area of condenser, so as to ensure that refrigeration system is normal
Kind of refrigeration cycle, it is achieved the cryogenic refrigeration function of air conditioner.
Optionally, control module 25 is additionally operable to when outdoor environment temperature is more than or equal to the first preset temperature, and control is empty
Adjust device to enter heating mode or normal refrigerating mode, and control stop valve to open.Under normal refrigerating mode or heating mode
The heat exchange area of condenser 23 can not be reduced, so control stop valve is opened, you can make air conditioner normal work.
In addition, in one embodiment of the invention, detection module 24 can be additionally used in the middle portion temperature for detecting condenser 23,
Control module 25 can be additionally used in the rotating speed that outdoor fan 22 is adjusted according to the middle portion temperature of condenser 23.
In an embodiment of the present invention, can be according to the temperature range regulation outdoor fan where the middle portion temperature of condenser
Rotating speed.Specifically, as the middle portion temperature of condenser raises (when stop valve is closed), the rotating speed of outdoor fan is improved, with cold
The middle portion temperature of condenser reduces (when stop valve is opened), reduces the rotating speed of outdoor fan.
Wherein, for same outdoor fan rotating speed, when the middle portion temperature of condenser gradually rises, the outdoor fan
Temperature range corresponding to rotating speed is higher than when the middle portion temperature of condenser progressively declines.Specifically, when the middle part of condenser 23
When temperature rises to second temperature value by the first temperature value, the rotating speed of outdoor fan 22 can be improved by the first tachometer value to second turn
Speed value；When the middle portion temperature of condenser 23 drops to four temperature values by the 3rd temperature value, the rotating speed of outdoor fan 22 can be by
3rd tachometer value is reduced to the 4th tachometer value.For example, the air conditioner in one embodiment of the present of invention is in cryogenic refrigeration mould
Under formula, when the middle portion temperature for detecting condenser 23 rises to 35 DEG C and 45 DEG C respectively by 25 DEG C, the rotating speed of outdoor fan 22
It is respectively increased by 200 revolutions per minute to 300 revolutions per minute and 400 revolutions per minute；When detecting the middle portion temperature of condenser 23 by 40 DEG C points
When not dropping to 30 DEG C and 20 DEG C, the rotating speed of outdoor fan is reduced to 300 revolutions per minute and 200 revolutions per minute respectively by 400 revolutions per minute.
Wherein, such as when outdoor fan rotating speed is all 300 revolutions per minute, when the middle portion temperature of condenser gradually rises, the rotating speed pair
The temperature range of the middle portion temperature for the condenser answered is 35 DEG C to 45 DEG C；When the middle portion temperature of condenser progressively declines, this turn
The temperature range of the middle portion temperature of condenser corresponding to speed is 20 DEG C to 30 DEG C.
Thus, air conditioner controls condenser 23 to exchange heat under cryogenic refrigeration pattern according to the height of outdoor environment temperature
Size, air conditioner is set to freeze under ultra-low temperature surroundings and occur without liquid hit phenomenon, while by changing turning for outdoor fan
Speed changes the middle portion temperature of condenser 23, further lifts the refrigeration under ultra-low temperature surroundings of air conditioner.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium, which can even is that, to print the paper of described program thereon or other are suitable
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, have suitable combinational logic gate circuit application specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is by claim and its equivalent limits.
Claims (6)
- A kind of 1. control method of air conditioner, it is characterised in that the air conditioner includes compressor, outdoor fan and condenser, The condenser has total inlet pipe, total escape pipe and the multichannel time air inlet pipe being connected with the total inlet pipe, and described In multichannel time air inlet pipe at least secondary air inlet pipe is provided with stop valve to control the heat exchange area of the condenser, the control all the way Method processed comprises the following steps：Detect outdoor environment temperature；When the outdoor environment temperature is less than the first preset temperature, the air conditioner is controlled to enter cryogenic refrigeration pattern, and When the air conditioner is in the cryogenic refrigeration pattern, unlatching and the pass of the stop valve are controlled according to the outdoor environment temperature Close,When the air conditioner is in the cryogenic refrigeration pattern, wherein,If the outdoor environment temperature is more than the second preset temperature, the stop valve is controlled to open, wherein, described second is pre- If temperature is less than first preset temperature；If the outdoor environment temperature is less than or equal to second preset temperature, the stop valve is controlled to close,Wherein, second preset temperature is true according to the minimum frequency of the compressor and the minimum speed of the outdoor fan It is fixed.
- 2. the control method of air conditioner as claimed in claim 1, it is characterised in that also include：Detect the middle portion temperature of the condenser；The rotating speed of the outdoor fan is adjusted according to the middle portion temperature of the condenser.
- 3. the control method of air conditioner as claimed in claim 1, it is characterised in that also include：If the outdoor environment temperature is more than or equal to the first preset temperature, control the air conditioner enter heating mode or Person's normal refrigerating mode, and control the stop valve to open.
- A kind of 4. air conditioner, it is characterised in that including indoor set and outdoor unit, wherein, the outdoor unit includes：Compressor；Outdoor fan；There is total inlet pipe, total escape pipe and the multichannel that is connected with the total inlet pipe time to enter for condenser, the condenser Tracheae, and in the multichannel time air inlet pipe at least secondary air inlet pipe is provided with stop valve to control the heat exchange of the condenser all the way Area；Temperature detecting module, for detecting outdoor environment temperature；Control module, the control module are used to control the air-conditioning when the outdoor environment temperature is less than the first preset temperature Device enters cryogenic refrigeration pattern, and when the air conditioner is in the cryogenic refrigeration pattern, the control module is according to Outdoor environment temperature controls the opening and closing of the stop valve,When the air conditioner is in the cryogenic refrigeration pattern, wherein,If the outdoor environment temperature is more than the second preset temperature, the control module then controls the stop valve to open, its In, second preset temperature is less than first preset temperature；If the outdoor environment temperature is less than or equal to second preset temperature, the control module then controls the cut-off Valve is closed,Wherein, the control module is according to obtaining the minimum frequency of the compressor and the minimum speed of the outdoor fan Second preset temperature.
- 5. air conditioner as claimed in claim 4, it is characterised in that the temperature detecting module is additionally operable to detect the condenser Middle portion temperature, the control module is additionally operable to adjust the rotating speed of the outdoor fan according to the middle portion temperature of the condenser.
- 6. air conditioner as claimed in claim 4, it is characterised in that the control module is additionally operable to work as the outdoor environment temperature During more than or equal to the first preset temperature, the air conditioner is controlled to enter heating mode or normal refrigerating mode, and control institute State stop valve unlatching.
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105115117B (en) * | 2015-08-21 | 2017-12-08 | 广东美的暖通设备有限公司 | Air-conditioner set and its cryogenic refrigeration control method and low-temperature refrigeration control device |
| JP6814974B2 (en) * | 2015-09-11 | 2021-01-20 | パナソニックＩｐマネジメント株式会社 | Refrigeration equipment |
| CN105258304B (en) * | 2015-11-23 | 2018-03-27 | 广东美的制冷设备有限公司 | Cryogenic refrigeration control method, low-temperature refrigeration control device and air conditioner |
| CN106440232A (en) * | 2016-10-31 | 2017-02-22 | 广东美的制冷设备有限公司 | Low-temperature heating control method, controller and air conditioner |
| CN106705361A (en) * | 2016-12-26 | 2017-05-24 | 广州华凌制冷设备有限公司 | Low-temperature refrigeration control method, controller and air conditioner |
| CN107560001B (en) * | 2017-08-23 | 2019-08-16 | 宁波奥克斯电气股份有限公司 | Low temperature refrigerating air conditioner and its control method |
| CN108019895B (en) * | 2017-11-27 | 2020-11-24 | 青岛海尔空调电子有限公司 | Control method of air conditioner |
| CN108151254B (en) * | 2017-12-25 | 2020-09-08 | 广东美的制冷设备有限公司 | Air conditioner, operation control method, and computer-readable storage medium |
| CN108954710A (en) * | 2018-07-18 | 2018-12-07 | 海信（山东）空调有限公司 | A kind of air conditioner low-temperature heating starting method and air conditioner |
| CN109323426B (en) * | 2018-11-09 | 2020-12-25 | 青岛海尔空调器有限总公司 | Control method of air conditioner and air conditioner |
| CN112577164B (en) * | 2019-09-27 | 2022-03-25 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
| CN112797704A (en) * | 2021-01-12 | 2021-05-14 | 珠海格力电器股份有限公司 | Condensing pressure control method and control system |
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