CN103398444B - Air conditioner low-temperature refrigeration method and device - Google Patents
Air conditioner low-temperature refrigeration method and device Download PDFInfo
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- CN103398444B CN103398444B CN201310273057.4A CN201310273057A CN103398444B CN 103398444 B CN103398444 B CN 103398444B CN 201310273057 A CN201310273057 A CN 201310273057A CN 103398444 B CN103398444 B CN 103398444B
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Abstract
The open a kind of air conditioner low-temperature refrigeration method of the present invention and device, wherein this air conditioner low-temperature refrigeration method comprises the following steps: when detecting refrigeration instruction, gather inner coil pipe temperature；When inner coil pipe temperature is more than or equal to preset temperature threshold values, controls outdoor fan and run up, and gather indoor evaporating pressure and the pressure at expulsion of compressor of indoor evaporator；When indoor evaporating pressure is less than presetting evaporating pressure threshold values, and when pressure at expulsion presets pressure at expulsion threshold values less than first, control outdoor fan low-speed running.The air conditioner low-temperature refrigeration method of the present invention; by parameters such as inner coil pipe temperature, indoor evaporating pressure and the pressures at expulsion in collection air-conditioner; and the rotating speed of outdoor fan is controlled according to the inner coil pipe temperature collected, indoor evaporating pressure and pressure at expulsion; air-conditioner indoor fan in process of refrigerastion is avoided to enter anti-freeze protection and interrupt refrigeration so that air-conditioner remains to normally freeze under the conditions of the winter low temperature of cold district.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of air conditioner low-temperature refrigeration method and device.
Background technology
The places such as the hotel of cold district, dance hall, the physical fitness Room, in the case of indoor have heating installation, often have very winter
Many people are because causing body temperature to steeply rise in the training of interior length time fierceness, motion, or cause owing to occupancy increases
Indoor temperature rises, although outdoor temperature is-20 DEG C～10 DEG C or lower temperature, but indoor activity personnel need nonetheless remain for out
Open air-conditioner to freeze, and conventional air-conditioning device is only capable of in the range of the outdoor temperature of 7 DEG C～43 DEG C freezing, it is impossible to meet outdoor
Temperature carries out the requirement freezed when-20 DEG C～10 DEG C or lower temperature.
Summary of the invention
The main object of the present invention is to propose a kind of air conditioner low-temperature refrigeration method and device, it is intended to avoid process of refrigerastion hollow
The indoor fan adjusting device enters anti-freeze guard mode, makes air-conditioner remain to normally make under the conditions of the winter low temperature of cold district
Cold.
In order to achieve the above object, the present invention proposes a kind of air conditioner low-temperature refrigeration method, this air conditioner low-temperature refrigeration method bag
Include following steps:
When detecting refrigeration instruction, gather inner coil pipe temperature；
When described inner coil pipe temperature is more than or equal to preset temperature threshold values, controls outdoor fan and run up, and adopt
The indoor evaporating pressure of collection indoor evaporator and the pressure at expulsion of compressor；
When described indoor evaporating pressure is less than presetting evaporating pressure threshold values, and described pressure at expulsion is less than first row of presetting
During atmospheric pressure threshold values, control described outdoor fan low-speed running.
Preferably, also include after the step of described control described outdoor fan low-speed running:
When described indoor evaporating pressure is less than described default evaporating pressure threshold values, and described pressure at expulsion is pre-less than second
If during pressure at expulsion threshold values, control described outdoor fan and shut down；Wherein, described second pressure at expulsion threshold values is preset less than institute
State first and preset pressure at expulsion threshold values.
Preferably, also include after the step that the described outdoor fan of described control shuts down:
When described indoor evaporating pressure is more than or equal to described default evaporating pressure threshold values, and described pressure at expulsion is big
In or equal to the 3rd preset pressure at expulsion threshold values time, control described outdoor fan and transferred to low-speed running by stopping；Wherein, described
3rd presets pressure at expulsion threshold values presets pressure at expulsion threshold values more than described second.
Preferably, also include after the step that the described outdoor fan of described control is transferred to low-speed running by stopping:
When described indoor evaporating pressure is more than or equal to described default evaporating pressure threshold values, and described pressure at expulsion is big
In or when presetting pressure at expulsion threshold values equal to the 4th, control described outdoor fan and transferred to by low speed and running up；Wherein, described
4th presets pressure at expulsion threshold values presets pressure at expulsion threshold values more than the described 3rd.
The present invention also proposes a kind of low temperature refrigeration of air conditioner device, and this low temperature refrigeration of air conditioner device includes:
Temperature sensor, is used for gathering inner coil pipe temperature；
Pressure transducer, for gathering indoor evaporating pressure and the pressure at expulsion of compressor of indoor evaporator；
Master controller, is connected with described temperature sensor and described pressure transducer respectively, is used for detecting refrigeration instruction, and
And detect the inner coil pipe temperature that described temperature sensor collects, indoor evaporating pressure that described pressure transducer collects and
Pressure at expulsion, when described inner coil pipe temperature is more than or equal to preset temperature threshold values, controls outdoor fan and runs up；And
When described indoor evaporating pressure is less than presetting evaporating pressure threshold values, and described pressure at expulsion presets exhaust pressure valve less than first
During value, control described outdoor fan low-speed running.
Preferably, described master controller is additionally operable to when described indoor evaporating pressure is less than described default evaporating pressure valve
Value, and when described pressure at expulsion presets pressure at expulsion threshold values less than second, control described outdoor fan and shut down；Wherein, institute
State second to preset pressure at expulsion threshold values and preset pressure at expulsion threshold values less than described first.
Preferably, described master controller is additionally operable to when described indoor evaporating pressure is more than or equal to described default evaporation
Pressure threshold value, and described pressure at expulsion more than or equal to the 3rd preset pressure at expulsion threshold values time, control described outdoor fan by
Stop transferring low-speed running to；Wherein, the described 3rd preset pressure at expulsion threshold values and preset pressure at expulsion threshold values more than described second.
Preferably, described master controller is additionally operable to when described indoor evaporating pressure is more than or equal to described default evaporation
Pressure threshold value, and described pressure at expulsion more than or equal to the 4th preset pressure at expulsion threshold values time, control described outdoor fan by
Low speed transfers to and running up；Wherein, the described 4th preset pressure at expulsion threshold values and preset pressure at expulsion threshold values more than the described 3rd.
The air conditioner low-temperature refrigeration method of present invention proposition and device, by the inner coil pipe temperature in collection air-conditioner, indoor
The parameters such as side evaporating pressure and pressure at expulsion, and according to the inner coil pipe temperature collected, indoor evaporating pressure and pressure at expulsion
Control the rotating speed of outdoor fan so that when air-conditioner enters cryogenic refrigeration state, outdoor fan runs up, and at air-conditioner
In process of refrigerastion, the outdoor fan of air-conditioner reduces its rotating speed, it is to avoid air-conditioner indoor fan of air-conditioner in process of refrigerastion enters
Enter anti-freeze guard mode, so that air-conditioner remains to normally freeze under the conditions of the winter low temperature of cold district.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of air conditioner low-temperature refrigeration method first embodiment of the present invention；
Fig. 2 is the schematic flow sheet of air conditioner low-temperature refrigeration method the second embodiment of the present invention；
Fig. 3 is the schematic flow sheet of air conditioner low-temperature refrigeration method the 3rd embodiment of the present invention；
Fig. 4 is the schematic flow sheet of air conditioner low-temperature refrigeration method the 4th embodiment of the present invention；
Fig. 5 is the theory diagram of low temperature refrigeration of air conditioner device of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with Figure of description and specific embodiment.Should be appreciated that this
Specific embodiment described by place only in order to explain the present invention, is not intended to limit the present invention.
The present invention proposes a kind of air conditioner low-temperature refrigeration method.
With reference to the schematic flow sheet that Fig. 1, Fig. 1 are air conditioner low-temperature refrigeration method first embodiment of the present invention.
The air conditioner low-temperature refrigeration method that the embodiment of the present invention proposes includes:
Step S10, when detecting refrigeration instruction, gathers inner coil pipe temperature.
Step S20, when inner coil pipe temperature is more than or equal to preset temperature threshold values, controls outdoor fan and runs up,
And gather indoor evaporating pressure and the pressure at expulsion of compressor of indoor evaporator.
Step S30, when indoor evaporating pressure is less than presetting evaporating pressure threshold values, and pressure at expulsion is less than first row of presetting
During atmospheric pressure threshold values, control outdoor fan low-speed running.
In the present embodiment, presetting evaporating pressure threshold values is that coolant when closing on icing of the indoor evaporator in air-conditioner is satisfied
And evaporating pressure, first to preset pressure at expulsion threshold values be that under conventional refrigerant working condition, (air-conditioner does not carries out cryogenic refrigeration situation
Under) corresponding pressure at expulsion, preset temperature threshold values is that indoor evaporating pressure reaches corresponding full during the saturated evaporating pressure of coolant
And temperature, in the present embodiment, this saturation temperature is 3 DEG C.
Higher in indoor temperature, and in the case of outdoor temperature is relatively low, such as indoor temperature is 29 DEG C, outdoor temperature is-7
In the case of DEG C, if indoor occupant opens low temperature refrigeration of air conditioner function, then can send refrigeration to the master controller in air-conditioner and refer to
Order, when master controller detects refrigeration instruction, gathers the Guan Wen (indoor fan of inner coil pipe by temperature sensor in air-conditioner
Coil temperature), obtain inner coil pipe temperature, master controller temperature sensor simultaneously detects the inner coil pipe temperature that collects.
Master controller, after detecting refrigeration instruction, constantly detects the inner coil pipe temperature that temperature sensor collects, when
When inner coil pipe temperature being detected more than or equal to preset temperature threshold values, outdoor fan fortune at a high speed in main controller controls air-conditioner
Turn, thus control air-conditioner and enter cryogenic refrigeration state.If master controller detects that inner coil pipe temperature is less than preset temperature threshold values,
Then compressor, indoor fan and outdoor fan in main controller controls air-conditioner shut down so that air-conditioner does not start low
Temperature refrigerating function.
After air-conditioner enters cryogenic refrigeration state, gathered the indoor of indoor evaporator by pressure transducer in air-conditioner
Side evaporating pressure and the pressure at expulsion of compressor, and master controller detects the indoor evaporating pressure and aerofluxus collected in real time
Pressure, inside master controller sensing chamber, evaporating pressure is less than presetting evaporating pressure threshold values, and pressure at expulsion is preset less than first
During pressure at expulsion threshold values, main controller controls outdoor fan is by transferring at a high speed low-speed running to, after outdoor fan low-speed running, and air-conditioning
The outdoor heat exchange amount of device reduces, and the pressure at expulsion of compressor and back pressure rise, indoor evaporating pressure and inner coil pipe temperature
Rise the most therewith, thus keep the seriality of air-conditioner process of refrigerastion, will not be due to pressure at expulsion, indoor evaporating pressure and interior
Coil temperature is the lowest and causes indoor fan to enter anti-freeze protection so that air-conditioner is the indoor wind of air-conditioner in process of refrigerastion
Machine will not enter anti-freeze guard mode and interrupt refrigeration.
Relative to prior art, the air conditioner low-temperature refrigeration method of the present invention, by gather inner coil pipe temperature in air-conditioner,
The parameters such as indoor evaporating pressure and pressure at expulsion, and according to the inner coil pipe temperature collected, indoor evaporating pressure and aerofluxus
The rotating speed of Stress control outdoor fan so that when air-conditioner enters cryogenic refrigeration state, outdoor fan runs up, and at sky
The outdoor fan of air-conditioner in device process of refrigerastion is adjusted to reduce its rotating speed, it is to avoid air-conditioner is the indoor wind of air-conditioner in process of refrigerastion
Machine enters anti-freeze guard mode and interrupts refrigeration, so that air-conditioner just remains under the conditions of the winter low temperature of cold district
Often refrigeration.
With reference to the schematic flow sheet that Fig. 2, Fig. 2 are air conditioner low-temperature refrigeration method the second embodiment of the present invention.
Based on first embodiment, air conditioner low-temperature refrigeration method the second embodiment of the present invention, step in the present embodiment are proposed
Also include after S30:
Step S40, when indoor evaporating pressure is less than presetting evaporating pressure threshold values, and pressure at expulsion is less than second row of presetting
During atmospheric pressure threshold values, control outdoor fan and shut down.
In the present embodiment, second presets pressure at expulsion threshold values presets pressure at expulsion threshold values less than first, second row of presetting
Atmospheric pressure threshold values is pressure at expulsion corresponding after outdoor fan low-speed running.
After outdoor fan is by transferring low-speed running at a high speed, master controller the most constantly detects temperature sensor and collects
Inner coil pipe temperature, and the indoor evaporating pressure that collects of pressure transducer and pressure at expulsion.Outdoor fan is by turning at a high speed
After low-speed running, indoor temperature reduces further, and such as indoor temperature is reduced to a certain temperature value between 20 DEG C to 27 DEG C,
Even if outdoor temperature remains unchanged, pressure at expulsion, indoor evaporating pressure and inner coil pipe temperature also can reduce further.At inner disc
Pipe temperature more than or in equal in the case of 3 DEG C, when master controller detects indoor evaporating pressure less than presetting evaporating pressure
Threshold values, and when pressure at expulsion presets pressure at expulsion threshold values less than second, main controller controls outdoor fan shuts down, and now presses
Contracting machine also in operating, is in the heat exchange of natural wind, thereby further ensures that in air-conditioner process of refrigerastion, room inside and outside air conditioner chamber
Inner blower will not enter anti-freeze protection owing to pressure at expulsion, indoor evaporating pressure and inner coil pipe temperature are the lowest, it is to avoid empty
The indoor fan adjusting device air-conditioner in process of refrigerastion enters anti-freeze guard mode and interrupts refrigeration, the most also ensures outdoor wind
Machine does not has the noise of exception to occur in kinestate transformation process.
With reference to the schematic flow sheet that Fig. 3, Fig. 3 are air conditioner low-temperature refrigeration method the 3rd embodiment of the present invention.
Based on the second embodiment, air conditioner low-temperature refrigeration method the 3rd embodiment of the present invention, step in the present embodiment are proposed
Also include after S40:
Step S50, when indoor evaporating pressure more than or equal to preset evaporating pressure threshold values, and pressure at expulsion more than or
When person presets pressure at expulsion threshold values equal to the 3rd, control outdoor fan and transferred to low-speed running by stopping.
In the present embodiment, the 3rd presets pressure at expulsion threshold values presets pressure at expulsion threshold values more than second, the 3rd row of presetting
Atmospheric pressure threshold values is pressure at expulsion corresponding after outdoor fan shuts down.
After outdoor fan shuts down, master controller the most constantly detects the inner coil pipe temperature that temperature sensor collects
Degree, and the indoor evaporating pressure that collects of pressure transducer and pressure at expulsion.Outdoor fan shut down after indoor temperature
Can gradually go up, pressure at expulsion, indoor evaporating pressure and inner coil pipe temperature rise the most therewith, inner coil pipe temperature more than or in
In the case of 3 DEG C, when master controller indoor evaporating pressure is more than or equal to presetting evaporating pressure threshold values, and exhaust pressure
When power presets pressure at expulsion threshold values more than or equal to the 3rd, main controller controls outdoor fan is transferred to low-speed running by stopping,
Make air-conditioner enter again refrigerating state, be gradually lowered indoor temperature, keep indoor comfortable environment.
With reference to the schematic flow sheet that Fig. 4, Fig. 4 are air conditioner low-temperature refrigeration method the 4th embodiment of the present invention.
Based on the 3rd embodiment, air conditioner low-temperature refrigeration method the 4th embodiment of the present invention, step in the present embodiment are proposed
Also include after S50:
Step S60, when indoor evaporating pressure more than or equal to preset evaporating pressure threshold values, and pressure at expulsion more than or
When person presets pressure at expulsion threshold values equal to the 4th, control outdoor fan and transferred to by low speed and running up.
In the present embodiment, the 4th presets pressure at expulsion threshold values presets pressure at expulsion threshold values more than the 3rd, the 4th row of presetting
Atmospheric pressure threshold values is pressure at expulsion corresponding after outdoor fan is transferred to low-speed running by stopping.
After outdoor fan again low-speed running, master controller the most constantly detects the inner disc that temperature sensor collects
Pipe temperature, and the indoor evaporating pressure that collects of pressure transducer and pressure at expulsion.Outdoor fan by after shutting down again
During secondary low-speed running, indoor temperature can be further up, and pressure at expulsion, indoor evaporating pressure and inner coil pipe temperature are entered the most therewith
One step rises, inner coil pipe temperature more than or in equal in the case of 3 DEG C, when master controller indoor evaporating pressure more than or
Equal to presetting evaporating pressure threshold values, and when pressure at expulsion presets pressure at expulsion threshold values more than or equal to the 4th, master controller control
Outdoor fan processed is transferred to by low speed and running up, and to maintain indoor occupant required indoor low temperature state, keeps indoor comfortable
Environment.
In the present embodiment, after outdoor fan runs up, it is interior that master controller continuation detection temperature sensor collects
Coil temperature, and the indoor evaporating pressure that collects of pressure transducer and pressure at expulsion, air-conditioner is referred to above-mentioned step
Rapid circular flow, maintenance indoor temperature is in certain temperature range, to keep indoor comfortable environment.
The present invention also proposes a kind of low temperature refrigeration of air conditioner device.
With reference to the theory diagram that Fig. 5, Fig. 5 are low temperature refrigeration of air conditioner device of the present invention.
In the present embodiment, low temperature refrigeration of air conditioner device includes temperature sensor 10, pressure transducer 20 and master controller 30.
Wherein, temperature sensor 10 is used for gathering inner coil pipe temperature, and pressure transducer 20 is for gathering indoor evaporator
Indoor evaporating pressure and the pressure at expulsion of compressor, master controller 30 connects with temperature sensor 10 and pressure transducer 20 respectively
Connecing, master controller 30 is used for detecting refrigeration instruction, and detects inner coil pipe temperature, the pressure sensing that temperature sensor 10 collects
Indoor evaporating pressure that device 20 collects and pressure at expulsion, when inner coil pipe temperature is more than or equal to preset temperature threshold values,
Control outdoor fan to run up；And when indoor evaporating pressure is less than presetting evaporating pressure threshold values, and pressure at expulsion is less than
First when presetting pressure at expulsion threshold values, controls outdoor fan low-speed running.
In the present embodiment, presetting evaporating pressure threshold values is that coolant when closing on icing of the indoor evaporator in air-conditioner is satisfied
And evaporating pressure, first to preset pressure at expulsion threshold values be that under conventional refrigerant working condition, (air-conditioner does not carries out cryogenic refrigeration situation
Under) corresponding pressure at expulsion, preset temperature threshold values is that indoor evaporating pressure reaches corresponding full during the saturated evaporating pressure of coolant
And temperature, in the present embodiment, this saturation temperature is 3 DEG C.
Higher in indoor temperature, and in the case of outdoor temperature is relatively low, such as indoor temperature is 29 DEG C, outdoor temperature is-7
In the case of DEG C, if indoor occupant opens low temperature refrigeration of air conditioner function, then can send refrigeration to the master controller 30 in air-conditioner
Instruction, when master controller 30 detects refrigeration instruction, gathers the Guan Wen (room of inner coil pipe by temperature sensor in air-conditioner 10
The coil temperature of inner blower), obtain inner coil pipe temperature, master controller 30 temperature sensor 10 simultaneously detects the inner coil pipe collected
Temperature.
Master controller 30, after detecting refrigeration instruction, constantly detects the inner coil pipe temperature that temperature sensor 10 collects
Degree, when inner coil pipe temperature being detected more than or equal to preset temperature threshold values, master controller 30 controls outdoor wind in air-conditioner
Machine runs up, thus controls air-conditioner and enter cryogenic refrigeration state.If master controller 30 detects that inner coil pipe temperature is less than pre-
If threshold temperature, then master controller 30 controls the compressor in air-conditioner, indoor fan and outdoor fan and shuts down so that empty
Device is adjusted not start cryogenic refrigeration function.
After air-conditioner enters cryogenic refrigeration state, gathered the room of indoor evaporator by pressure transducer in air-conditioner 20
Inner side evaporating pressure and the pressure at expulsion of compressor, and master controller 30 detect in real time the indoor evaporating pressure collected and
Pressure at expulsion, inside master controller 30 sensing chamber, evaporating pressure is less than presetting evaporating pressure threshold values, and pressure at expulsion is less than the
One when presetting pressure at expulsion threshold values, and master controller 30 controls outdoor fan by transferring at a high speed low-speed running to, and outdoor fan low speed is transported
After Zhuaning, the outdoor heat exchange amount of air-conditioner reduces, and the pressure at expulsion of compressor and back pressure rise, indoor evaporating pressure and interior
Coil temperature rises the most therewith, thus keeps the seriality of air-conditioner process of refrigerastion, will not be due to pressure at expulsion, indoor evaporation
Pressure and inner coil pipe temperature the lowest and cause indoor fan enter anti-freeze protection, it is to avoid air-conditioner is air-conditioner in process of refrigerastion
Indoor fan enter anti-freeze guard mode and interrupt refrigeration.
Relative to prior art, the refrigerating method of the low temperature refrigeration of air conditioner device of the present invention is by gathering in air-conditioner
The parameters such as inner coil pipe temperature, indoor evaporating pressure and pressure at expulsion, and according to the inner coil pipe temperature collected, indoor evaporation
Pressure and pressure at expulsion control the rotating speed of outdoor fan so that when air-conditioner enters cryogenic refrigeration state, outdoor fan fortune at a high speed
Turn, and the outdoor fan of air-conditioner reduces its rotating speed in air-conditioner process of refrigerastion, it is to avoid air-conditioner is in process of refrigerastion hollow
The indoor fan adjusting device enters anti-freeze guard mode and interrupts refrigeration so that air-conditioner is in the winter low temperature condition of cold district
Under remain to normally freeze.
In the present embodiment, master controller 30 is additionally operable to when indoor evaporating pressure is less than presetting evaporating pressure threshold values, and
When pressure at expulsion presets pressure at expulsion threshold values less than second, control outdoor fan and shut down；Wherein, second pressure at expulsion is preset
Threshold values presets pressure at expulsion threshold values less than first.Wherein, second preset pressure at expulsion threshold values and preset exhaust pressure valve less than first
Value, second to preset pressure at expulsion threshold values be pressure at expulsion corresponding after outdoor fan low-speed running.
After outdoor fan is by transferring low-speed running at a high speed, master controller 30 the most constantly detects temperature sensor 10 and adopts
The inner coil pipe temperature that arrives of collection, and the indoor evaporating pressure that collects of pressure transducer 20 and pressure at expulsion.Outdoor fan by
After transferring low-speed running at a high speed, indoor temperature reduces further, and it is a certain that such as indoor temperature is reduced between 20 DEG C to 27 DEG C
Temperature value, even if outdoor temperature remains unchanged, pressure at expulsion, indoor evaporating pressure and inner coil pipe temperature also can drop further
Low.Inner coil pipe temperature more than or in equal in the case of 3 DEG C, when master controller 30 detects that indoor evaporating pressure is less than pre-
If evaporating pressure threshold values, and when pressure at expulsion presets pressure at expulsion threshold values less than second, master controller 30 controls outdoor fan and stops
Only operating, now compressor is also in operating, is in the heat exchange of natural wind, thereby further ensures that at air-conditioning inside and outside air conditioner chamber
Device process of refrigerastion, indoor fan will not enter antifreeze owing to pressure at expulsion, indoor evaporating pressure and inner coil pipe temperature are the lowest
Knot protection so that air-conditioner indoor fan of air-conditioner in process of refrigerastion will not enter anti-freeze guard mode and interrupt system
Cold, the most also ensure that outdoor fan does not has the noise of exception to occur in kinestate transformation process.
In the present embodiment, master controller 30 is additionally operable to when indoor evaporating pressure is more than or equal to presetting evaporating pressure
Threshold values, and when pressure at expulsion presets pressure at expulsion threshold values more than or equal to the 3rd, control outdoor fan and transferred to low speed by stopping
Operating.Wherein the 3rd presetting pressure at expulsion threshold values and preset pressure at expulsion threshold values more than second, the 3rd presets pressure at expulsion threshold values is
The pressure at expulsion that outdoor fan is corresponding after shutting down.
After outdoor fan shuts down, master controller 30 the most constantly detects the inner disc that temperature sensor 10 collects
Pipe temperature, and the indoor evaporating pressure that collects of pressure transducer 20 and pressure at expulsion.Outdoor fan shuts down rear chamber
Interior temperature can gradually be gone up, and pressure at expulsion, indoor evaporating pressure and inner coil pipe temperature rise the most therewith, big in inner coil pipe temperature
In or in equal in the case of 3 DEG C, when master controller 30 indoor evaporating pressure is more than or equal to presetting evaporating pressure threshold values,
And pressure at expulsion more than or equal to the 3rd preset pressure at expulsion threshold values time, master controller 30 controls outdoor fan and is transferred to by stopping
Low-speed running so that air-conditioner enters again refrigerating state, is gradually lowered indoor temperature, keeps indoor comfortable environment.
In the present embodiment, master controller 30 is additionally operable to when indoor evaporating pressure is more than or equal to presetting evaporating pressure
Threshold values, and when pressure at expulsion presets pressure at expulsion threshold values more than or equal to the 4th, control outdoor fan and transferred at a high speed by low speed
Operating.Wherein the 4th presetting pressure at expulsion threshold values and preset pressure at expulsion threshold values more than the 3rd, the 4th presets pressure at expulsion threshold values is
The pressure at expulsion that outdoor fan is corresponding after being transferred to low-speed running by stopping.
After outdoor fan again low-speed running, master controller 30 the most constantly detects what temperature sensor 10 collected
Inner coil pipe temperature, and the indoor evaporating pressure that collects of pressure transducer 20 and pressure at expulsion.Outdoor fan is by stopping fortune
After Zhuaning again low-speed running time, indoor temperature can be further up, and pressure at expulsion, indoor evaporating pressure and inner coil pipe temperature are also
The most further up, inner coil pipe temperature more than or in equal in the case of 3 DEG C, when master controller 30 indoor evaporating pressure
More than or equal to presetting evaporating pressure threshold values, and when pressure at expulsion presets pressure at expulsion threshold values more than or equal to the 4th, main
Controller 30 controls outdoor fan and is transferred to by low speed and running up, and to maintain indoor occupant required indoor low temperature state, protects
Hold indoor comfortable environment.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilization
Equivalent structure or equivalence flow process that description of the invention and accompanying drawing content are made convert, or it is relevant to be directly or indirectly used in other
Technical field, be the most in like manner included in the scope of patent protection of the present invention.
Claims (2)
1. an air conditioner low-temperature refrigeration method, it is characterised in that comprise the following steps:
When detecting refrigeration instruction, gather inner coil pipe temperature；
When described inner coil pipe temperature is more than or equal to preset temperature threshold values, controls outdoor fan and run up, and gather room
The indoor evaporating pressure of interior vaporizer and the pressure at expulsion of compressor；
When described indoor evaporating pressure is less than presetting evaporating pressure threshold values, and described pressure at expulsion presets exhaust pressure less than first
During power threshold values, control described outdoor fan low-speed running；
When described indoor evaporating pressure is less than described default evaporating pressure threshold values, and described pressure at expulsion is less than second row of presetting
During atmospheric pressure threshold values, control described outdoor fan and shut down；Wherein, described second pressure at expulsion threshold values is preset less than described the
One presets pressure at expulsion threshold values；
When described indoor evaporating pressure is more than or equal to described default evaporating pressure threshold values, and described pressure at expulsion more than or
When person presets pressure at expulsion threshold values equal to the 3rd, control described outdoor fan and transferred to low-speed running by stopping；Wherein, the described 3rd
Preset pressure at expulsion threshold values and preset pressure at expulsion threshold values more than described second；
When described indoor evaporating pressure is more than or equal to described default evaporating pressure threshold values, and described pressure at expulsion more than or
When person presets pressure at expulsion threshold values equal to the 4th, control described outdoor fan and transferred to by low speed and running up；Wherein, the described 4th
Preset pressure at expulsion threshold values and preset pressure at expulsion threshold values more than the described 3rd.
2. a low temperature refrigeration of air conditioner device, it is characterised in that including:
Temperature sensor, is used for gathering inner coil pipe temperature；
Pressure transducer, for gathering indoor evaporating pressure and the pressure at expulsion of compressor of indoor evaporator；
Master controller, is connected with described temperature sensor and described pressure transducer respectively, is used for detecting refrigeration instruction, and examines
Survey the inner coil pipe temperature that described temperature sensor collects, indoor evaporating pressure that described pressure transducer collects and aerofluxus
Pressure, when described inner coil pipe temperature is more than or equal to preset temperature threshold values, controls outdoor fan and runs up；And work as institute
State indoor evaporating pressure less than presetting evaporating pressure threshold values, and described pressure at expulsion presets pressure at expulsion threshold values less than first
Time, control described outdoor fan low-speed running；
Described master controller is additionally operable to when described indoor evaporating pressure is less than described default evaporating pressure threshold values, and described aerofluxus
When pressure presets pressure at expulsion threshold values less than second, control described outdoor fan and shut down；Wherein, described second aerofluxus is preset
Pressure threshold value presets pressure at expulsion threshold values less than described first；
Described master controller is additionally operable to when described indoor evaporating pressure is more than or equal to described default evaporating pressure threshold values, and
When described pressure at expulsion presets pressure at expulsion threshold values more than or equal to the 3rd, control described outdoor fan and transferred to low speed by stopping
Operating；Wherein, the described 3rd preset pressure at expulsion threshold values and preset pressure at expulsion threshold values more than described second；
Described master controller is additionally operable to when described indoor evaporating pressure is more than or equal to described default evaporating pressure threshold values, and
When described pressure at expulsion presets pressure at expulsion threshold values more than or equal to the 4th, control described outdoor fan and transferred at a high speed by low speed
Operating；Wherein, the described 4th preset pressure at expulsion threshold values and preset pressure at expulsion threshold values more than the described 3rd.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310273057.4A CN103398444B (en) | 2013-07-01 | 2013-07-01 | Air conditioner low-temperature refrigeration method and device |
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| CN201310273057.4A CN103398444B (en) | 2013-07-01 | 2013-07-01 | Air conditioner low-temperature refrigeration method and device |
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| Publication Number | Publication Date |
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| CN103398444A CN103398444A (en) | 2013-11-20 |
| CN103398444B true CN103398444B (en) | 2016-12-28 |
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| CN104089380A (en) * | 2014-07-31 | 2014-10-08 | 广东志高空调有限公司 | Ultralow-temperature air conditioner refrigeration method and device |
| CN104913447A (en) * | 2015-06-01 | 2015-09-16 | 广东美的制冷设备有限公司 | Air conditioner, and control method and control device for outdoor fan in air conditioner |
| CN105091228B (en) * | 2015-08-03 | 2018-02-23 | 珠海格力电器股份有限公司 | Cryogenic refrigeration control method, the device and system of air conditioner unit |
| CN106440587A (en) * | 2016-09-29 | 2017-02-22 | 海信（广东）空调有限公司 | An air conditioner cooling control method and air conditioner |
| CN107255306B (en) * | 2017-05-19 | 2023-02-17 | 海信空调有限公司 | Combined variable frequency air conditioner and control method thereof |
| CN107560112B (en) * | 2017-08-11 | 2019-11-08 | 宁波奥克斯电气股份有限公司 | A kind of control method of air conditioner refrigerating high temperature-proof protection |
| CN110762784B (en) * | 2018-07-10 | 2021-12-28 | 青岛海尔空调电子有限公司 | Control method and device for air conditioner fan and computer readable storage medium |
| CN111189193B (en) * | 2018-11-14 | 2021-09-21 | 重庆海尔空调器有限公司 | Air conditioner and anti-freezing control method thereof |
| CN111189197B (en) * | 2018-11-14 | 2021-09-21 | 重庆海尔空调器有限公司 | Air conditioner and anti-freezing control method thereof |
| CN111189198B (en) * | 2018-11-14 | 2021-10-29 | 青岛海尔空调器有限总公司 | Air conditioner and anti-freezing control method thereof |
| CN111189180B (en) * | 2018-11-14 | 2021-09-21 | 重庆海尔空调器有限公司 | Air conditioner and anti-freezing control method thereof |
| CN110793159B (en) * | 2019-11-19 | 2021-10-26 | 宁波奥克斯电气股份有限公司 | Air conditioner refrigeration anti-freezing protection control method and device and air conditioner |
| CN111023515B (en) * | 2019-12-18 | 2021-08-13 | 广东美的制冷设备有限公司 | Air conditioner, refrigeration control method of air conditioner and storage medium |
| CN111442503B (en) * | 2020-04-09 | 2021-09-17 | 宁波奥克斯电气股份有限公司 | Control method and device for outdoor fan of air conditioner and air conditioner |
| CN111750483A (en) * | 2020-05-22 | 2020-10-09 | 宁波奥克斯电气股份有限公司 | Air conditioning system pressure protection control method and air conditioner |
| CN111878960B (en) * | 2020-05-27 | 2021-09-10 | 宁波奥克斯电气股份有限公司 | Control method and device for low-temperature refrigeration operation of air conditioner and air conditioner |
| CN111964238B (en) * | 2020-08-24 | 2022-03-25 | 广东美的暖通设备有限公司 | Control method and device of air conditioner, air conditioner and readable storage medium |
| CN113606760B (en) * | 2021-07-28 | 2022-07-12 | 珠海格力电器股份有限公司 | Temperature adjusting device control method and device, electronic device and storage medium |
| CN115789860A (en) * | 2022-11-28 | 2023-03-14 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
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