CN105135622B - The control method and domestic air conditioning of domestic air conditioning - Google Patents

The control method and domestic air conditioning of domestic air conditioning Download PDF

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Publication number
CN105135622B
CN105135622B CN201510585787.7A CN201510585787A CN105135622B CN 105135622 B CN105135622 B CN 105135622B CN 201510585787 A CN201510585787 A CN 201510585787A CN 105135622 B CN105135622 B CN 105135622B
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temperature
rotating speed
air conditioning
domestic air
outdoor
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CN105135622A (en
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陈华伟
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Abstract

The invention discloses a kind of domestic air conditioning, the domestic air conditioning includes：Controller, compressor, indoor fan, indoor heat exchanger, outdoor fan, outdoor heat exchanger and electric expansion valve, the controller is when receiving Computer mode open command, the domestic air conditioning is controlled to enter Computer mode, and according to domestic air conditioning refrigerating operaton described in default Computer mode control rule control, so that the domestic air conditioning is applied to building environment.The invention also discloses a kind of control method of domestic air conditioning.The present invention is by controller when controlling the domestic air conditioning to enter Computer mode, according to domestic air conditioning refrigerating operaton described in default Computer mode control rule control, so as to ensure that domestic air conditioning can reliably carry out cryogenic refrigeration, and then domestic air conditioning is caused to be applied to building environment.

Description

The control method and domestic air conditioning of domestic air conditioning
Technical field
The present invention relates to the control method and domestic air conditioning of air-conditioning technical field, more particularly to a kind of domestic air conditioning.
Background technology
Air conditioner is generally divided into two kinds of domestic air conditioner and machine room air conditioner.Domestic air conditioner is to temperature, humidity, wind speed etc. Comfort index requires higher, but does not require that air conditioner runs without interruption for 24 hours, and cost is low, and installation is more convenient.Computer room is empty Device is adjusted to be generally used for cooling to the computer room for being provided with the pyrotoxins such as main frame or processor, its most significant feature is to open Refrigeration mode is opened, annual longtime running, reliability requirement is higher, and cost is also higher, and installation is complex.
At present, increasing client often pacifies domestic air conditioner to reduce cost and pursue the convenience of installation Loaded in small communication station environment, reach the purpose to be cooled to pyrotoxins such as the main frame in small communication station, processors.Due to small Type building environment is higher to the reliability requirement of cryogenic refrigeration, and existing domestic air conditioner can not ensure the reliable of cryogenic refrigeration Property.
The content of the invention
It is a primary object of the present invention to provide the control method and domestic air conditioning of a kind of domestic air conditioning, it is intended to solve existing Domestic air conditioner can not ensure cryogenic refrigeration reliability technical problem.
The control method of domestic air conditioning provided by the invention, applied in domestic air conditioning, the domestic air conditioning includes control Device, compressor, indoor fan, indoor heat exchanger, outdoor fan, outdoor heat exchanger and electric expansion valve, the domestic air conditioning Control method includes：
The controller controls the domestic air conditioning to enter Computer mode when receiving Computer mode open command；
The controller is according to domestic air conditioning refrigerating operaton described in default Computer mode control rule control, so that described Domestic air conditioning is applied to building environment.
Preferably, the controller controls domestic air conditioning refrigerating operaton described in rule control according to default Computer mode, So that the domestic air conditioning is applied to the step of building environment and included：
When detecting that current indoor temperature is more than the first temperature threshold, the controller controls the compressor according to the One preset upper limit frequency is run；
When detecting that current indoor temperature is less than second temperature threshold value, the controller controls the compressor according to pre- If lower frequency limit is run；
Current indoor temperature is being detected more than or equal to the second temperature threshold value and less than or equal to the described first temperature When spending threshold value, the controller determines the running frequency of the compressor according to current design temperature and current indoor temperature, and The compressor is controlled to be run according to the running frequency of determination；
Wherein, first temperature threshold is more than the second temperature threshold value, and the first preset upper limit frequency is more than institute State pre-determined lower limit frequency.
Preferably, it is more than or equal to the second temperature threshold value and less than or equal to described first in current indoor temperature During temperature threshold, the step of controller control compressor is run according to the running frequency of determination, includes：
It is more than the 3rd temperature threshold in current outdoor temperature, and the running frequency determined is more than the second preset upper limit frequency During rate, the controller controls the compressor to be run according to the second preset upper limit frequency；
It is more than the 3rd temperature threshold in current outdoor temperature, and the running frequency determined is less than or equal to second and preset During upper limiting frequency, the controller controls the compressor to be run according to the running frequency of determination；
It is less than the 4th temperature threshold in current outdoor temperature, and the running frequency determined is more than the 3rd preset upper limit frequency During rate, the controller controls the compressor to be run according to the 3rd preset upper limit frequency；
It is less than the 4th temperature threshold in current outdoor temperature, and the running frequency determined is less than or equal to the 3rd and preset During upper limiting frequency, the controller controls the compressor to be run according to the running frequency of determination；
When being more than or equal to the 4th temperature threshold in current outdoor temperature, and being less than or equal to three temperature thresholds, The controller controls the compressor to be run according to the running frequency of determination；
Wherein, the 3rd temperature threshold is more than the 4th temperature threshold, and the second preset upper limit frequency is more than institute State the 3rd preset upper limit frequency.
Preferably, the controller controls domestic air conditioning refrigerating operaton described in rule control according to default Computer mode, So that the domestic air conditioning is applied to the step of building environment and included：
Detecting that coil temperature corresponding to the indoor heat exchanger is pre- by switching to second in the first preset temperature section If when in temperature range, the rotating speed of the indoor fan is adjusted to corresponding to the second preset temperature section as current level Default wind speed rank.
Preferably, the controller controls domestic air conditioning refrigerating operaton described in rule control according to default Computer mode, So that the domestic air conditioning is applied to the step of building environment and included：
When detecting that coil temperature corresponding to the outdoor heat exchanger is more than five temperature thresholds, the controller control The outdoor fan is run according to the first preset upper limit rotating speed；
When detecting that coil temperature corresponding to the outdoor heat exchanger is less than six temperature thresholds, the controller control The outdoor fan is run according to the first pre-determined lower limit rotating speed；
Coil temperature corresponding to the outdoor heat exchanger is being detected more than or equal to the 6th temperature threshold and is being less than Or during equal to five temperature threshold, the controller determines the rotating speed of the outdoor fan according to current outdoor temperature, and The outdoor fan is controlled to be run according to the rotating speed of determination；
Wherein, the 5th temperature threshold is more than the 6th temperature threshold, and the first preset upper limit rotating speed is more than institute State the first pre-determined lower limit rotating speed.
Preferably, it is more than or equal to the 6th temperature threshold and small in coil temperature corresponding to the outdoor heat exchanger When five temperature threshold, the step of controller control outdoor fan is run according to the rotating speed of determination, wraps Include：
When current outdoor temperature is more than seven temperature thresholds, the controller controls the outdoor fan pre- according to second If upper limit rotating speed is run；
It is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is more than the 3rd and preset During upper limit rotating speed, the controller controls the outdoor fan to be run according to the 3rd preset upper limit rotating speed；
It is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is less than second and preset During lower limit rotating speed, the controller controls the outdoor fan to be run according to the second pre-determined lower limit rotating speed；
It is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is less than or equal to the Three preset upper limit rotating speeds and when being more than the second pre-determined lower limit rotating speed, the controller controls the outdoor fan according to determination The outdoor fan rotating speed operation；
It is more than or equal to the 8th temperature threshold in current outdoor temperature, and is less than or equal to the 7th temperature threshold When, the controller controls the outdoor fan to be run according to the rotating speed of the outdoor fan of determination；
Wherein, the 7th temperature threshold is more than the 8th temperature threshold, and the second preset upper limit rotating speed is more than institute The 3rd preset upper limit rotating speed is stated, the 3rd preset upper limit rotating speed is more than the second pre-determined lower limit rotating speed.
Preferably, the controller controls domestic air conditioning refrigerating operaton described in rule control according to default Computer mode, So that the domestic air conditioning is applied to the step of building environment and included：
When detecting that the electric expansion valve resets, the electric expansion valve is first controlled to be adjusted by current aperture to default Positive maximum opening, and after lasting preset time, then control the electric expansion valve to recover to the current aperture, to complete Reset.
In addition, domestic air conditioning provided by the invention includes：Controller, compressor, indoor fan, indoor heat exchanger, outdoor Blower fan, outdoor heat exchanger and electric expansion valve, it is characterised in that the controller when receiving Computer mode open command, Control the domestic air conditioning to enter Computer mode, and freeze according to domestic air conditioning described in default Computer mode control rule control Operation, so that the domestic air conditioning is applied to building environment.
Preferably, the domestic air conditioning also includes being used for the first temperature sensor for detecting indoor temperature；
The controller receives the current indoor temperature signal of the first temperature sensor output, and described detecting When current indoor temperature signal is more than the first temperature threshold, the compressor is controlled to be run according to the first preset upper limit frequency；
The controller controls the compressor to press when detecting that current indoor temperature signal is less than second temperature threshold value Run according to pre-determined lower limit frequency；
The controller detect current indoor temperature signal be more than or equal to the second temperature threshold value and be less than or During equal to first temperature threshold, the operation frequency of the compressor is determined according to current design temperature and current indoor temperature Rate, and control the compressor to be run according to the running frequency of determination；
Wherein, first temperature threshold is more than the second temperature threshold value, and the first preset upper limit frequency is more than institute State pre-determined lower limit frequency.
Preferably, the domestic air conditioning also includes being used for the second temperature sensor for detecting outdoor temperature；
The controller is used for the current outdoor temperature signal for receiving the second temperature sensor output, and is detecting Current outdoor temperature signal is more than the 3rd temperature threshold, and when the running frequency determined is more than the second preset upper limit frequency, The compressor is controlled to be run according to the second preset upper limit frequency；Or it is more than the 3rd temperature threshold in current outdoor temperature Value, and the running frequency determined controls the compressor according to determination when being less than or equal to the second preset upper limit frequency The running frequency operation；Or detecting that current outdoor temperature is less than the 4th temperature threshold, and the operation frequency determined When rate is more than the 3rd preset upper limit frequency, the compressor is controlled to be run according to the 3rd preset upper limit frequency；Or working as Preceding outdoor temperature is less than the 4th temperature threshold, and when the running frequency determined is less than or equal to the 3rd preset upper limit frequency, The compressor is controlled to be run according to the running frequency of determination；Or detecting that current outdoor temperature is more than or equal to institute When stating the 4th temperature threshold, and being less than or equal to three temperature thresholds, operation frequency of the compressor according to determination is controlled Rate is run；
Wherein, the 3rd temperature threshold is more than the 4th temperature threshold, and the second preset upper limit frequency is more than institute State the 3rd preset upper limit frequency.
Preferably, the domestic air conditioning also includes the 3rd temperature biography for being used to detect the coil temperature of the indoor heat exchanger Sensor；
The controller receives coil temperature corresponding to the indoor heat exchanger of the three-temperature sensor output, and Detecting coil temperature corresponding to the indoor heat exchanger by switching to the second preset temperature area in the first preset temperature section When interior, the rotating speed of the indoor fan is adjusted to presetting wind speed corresponding to the second preset temperature section as current level Rank.
Preferably, the domestic air conditioning also includes the 4th temperature biography for being used to detect the coil temperature of the outdoor heat exchanger Sensor；
The controller receives coil temperature corresponding to the outdoor heat exchanger of the 4th temperature sensor output, and When detecting that coil temperature corresponding to the outdoor heat exchanger is more than five temperature thresholds, the outdoor fan is controlled according to One preset upper limit rotating speed is run；Or detecting that coil temperature corresponding to the outdoor heat exchanger is less than the 6th temperature threshold When, control the outdoor fan to be run according to the first pre-determined lower limit rotating speed；Or detecting corresponding to the outdoor heat exchanger Coil temperature is more than or equal to the 6th temperature threshold and when being less than or equal to five temperature threshold, according to working as cup Outer temperature determines the rotating speed of the outdoor fan, and controls the outdoor fan to be run according to the rotating speed of determination；
Wherein, the 5th temperature threshold is more than the 6th temperature threshold, and the first preset upper limit rotating speed is more than institute State the first pre-determined lower limit rotating speed.
Preferably, the domestic air conditioning also includes being used for the second temperature sensor for detecting outdoor temperature；
The controller is used for the current outdoor temperature signal for receiving the second temperature sensor output, and is working as cup When outer temperature signal is more than seven temperature thresholds, the outdoor fan is controlled to be run according to the second preset upper limit rotating speed；Or Current outdoor temperature signal is less than the 8th temperature threshold, and the rotating speed of the outdoor fan determined turns more than the 3rd preset upper limit When fast, the outdoor fan is controlled to be run according to the 3rd preset upper limit rotating speed；Or it is less than in current outdoor temperature signal 8th temperature threshold, and when the rotating speed of the outdoor fan determined is less than the second pre-determined lower limit rotating speed, the control outdoor wind Machine is run according to the second pre-determined lower limit rotating speed；Or it is less than the 8th temperature threshold, and the institute determined in current outdoor temperature When stating the rotating speed of outdoor fan less than or equal to the 3rd preset upper limit rotating speed and being more than the second pre-determined lower limit rotating speed, the control Device processed controls the outdoor fan to be run according to the rotating speed of the outdoor fan of determination；It is or big in current outdoor temperature signal In or equal to the 8th temperature threshold, and when being less than or equal to seven temperature threshold, control the outdoor fan according to The rotating speed operation of the outdoor fan determined；
Wherein, the 7th temperature threshold is more than the 8th temperature threshold, and the second preset upper limit rotating speed is more than institute The 3rd preset upper limit rotating speed is stated, the 3rd preset upper limit rotating speed is more than the second pre-determined lower limit rotating speed.
Preferably, the controller is additionally operable to, when detecting that the electric expansion valve resets, first control the electronics swollen Swollen valve is adjusted to pre-set forward maximum opening, and after lasting preset time by current aperture, then controls the electric expansion valve Recover to the current aperture, to complete to reset.
The control method and domestic air conditioning of domestic air conditioning provided by the invention, opened by controller receiving Computer mode When opening instruction, the domestic air conditioning is controlled to enter Computer mode, and according to family described in default Computer mode control rule control Run with air conditioner refrigerating, so as to ensure that domestic air conditioning can reliably carry out cryogenic refrigeration, and then domestic air conditioning is applicable In building environment.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the control method preferred embodiment of domestic air conditioning of the present invention；
Fig. 2 is the high-level schematic functional block diagram of domestic air conditioning preferred embodiment of the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of control method of domestic air conditioning, applied to the domestic variable frequency that in domestic air conditioning, is particularly suitable for use in In air-conditioning.The domestic air conditioning includes controller, compressor, indoor fan, indoor heat exchanger, outdoor fan, outdoor heat exchanger And electric expansion valve.Domestic air conditioning is generally used in the environment such as office and house, generally comprises refrigeration mode and heating mode. Under refrigeration mode or heating mode, domestic air conditioning is when adjusting the running frequency of compressor, typically according to design temperature and currently Difference between indoor temperature is typically preset with the corresponding relation of difference and running frequency come running frequency corresponding to determining, Difference is bigger, and running frequency is bigger；Domestic air conditioning is when adjusting indoor fan rotating speed, typically according to the wind speed mould of the setting of user Formula determines the rotating speed of indoor fan, for example, the wind speed pattern that user can set can be Jing Yin, low wind, apoplexy, high wind and strong Wind etc.；Domestic air conditioning is typically corresponding with outdoor fan rotating speed according to default outdoor temperature when adjusting outdoor fan rotating speed Relation, directly determine outdoor fan rotating speed corresponding to current outdoor temperature.
Domestic air conditioning provided by the invention can also be applied to machine in addition to it can be applied in the environment such as office and house In room environment, that is, it can be also used for providing the equipment such as the main frame in computer room, processor long-term and lasting cryogenic refrigeration environment. Therefore, domestic air conditioning provided by the invention is in addition to including common refrigeration mode and heating mode, in addition to is applied to computer room Computer mode in environment, under Computer mode, domestic air conditioning provided by the invention can provide reliable, lasting cryogenic refrigeration Environment.
Reference picture 1, Fig. 1 are the schematic flow sheet of the control method preferred embodiment of domestic air conditioning of the present invention, and the present invention carries The control method of the domestic air conditioning gone out comprises the following steps：
Step S10, the controller control the domestic air conditioning to enter computer room when receiving Computer mode open command Pattern；
Step S20, the controller control domestic air conditioning refrigerating operaton described in rule control according to default Computer mode, So that the domestic air conditioning is applied to building environment.
In the present embodiment, " Computer mode " button can be set up on the remote control of the domestic air conditioning, is pressed triggering this During key, remote control can send Computer mode open command to the controller；Or can also be on the panel of domestic air conditioning " Computer mode " control is set up, when triggering the control, you can be considered as controller and have received Computer mode open command.
Under Computer mode, domestic air conditioning is merely able to freeze.
Preferably, in order to ensure that domestic air conditioning can continuously and effectively be freezed under Computer mode, the controller When receiving preset failure signal, it still is able to control the domestic air conditioning to maintain refrigeration operational state.Preset failure signal Such as can be fault-signal corresponding to fault-signal corresponding to default sensor or other default components, as long as not shadow Ring refrigerating operaton.
It is further preferable that when controller receives fault message, output alarm signal.The form example of output alarm signal Such as can be：Display panel display alarm information is controlled, either controls display lamp output alarm signal or control buzzer defeated Go out alarm signal.When controller controls display lamp output alarm signal, display lamp can pass through flicker or continuous illumination Form output alarm signal.It is further preferable that controller will persistently control above-mentioned display panel, display lamp or buzzer output report Alert signal, untill trouble shooting corresponding to the alarm signal.So as to be effectively improved above-mentioned domestic air conditioning in computer room mould The reliability of cryogenic refrigeration is carried out under formula.
It is further preferable that under Computer mode, domestic air conditioning still is able to refrigerating operaton at relatively low ambient temperatures.Example Such as, when outdoor temperature is less than -15 DEG C, domestic air conditioning still is able to maintain refrigerating operaton.It is further preferable that under Computer mode, Domestic air conditioning will not reach temperature and shut down, i.e., when temperature reaches design temperature indoors, domestic air conditioning still is able to keep with predeterminated frequency Refrigerating operaton.
Above-mentioned default Computer mode control rule for example can be but be not limited to following several ways：According to indoor temperature Adjusting the running frequency of compressor, (such as indoor temperature then controls the operation of compressor frequently when be higher than a certain preset temperature threshold value Rate is run according to higher frequency), the maximum frequency of operation of compressor is either adjusted according to outdoor temperature or changed according to interior (such as the coil temperature of indoor heat exchanger is less than a certain preset temperature threshold value to the rotating speed of the coil temperature regulation indoor fan of hot device When, then control indoor fan to be run according to higher rotating speed), or adjusted according to the coil temperature and outdoor temperature of outdoor heat exchanger Save outdoor fan rotating speed and maximum (top) speed (such as when the coil temperature of outdoor heat exchanger is more than a certain preset temperature threshold value, Then outdoor fan is controlled to be run according to higher rotating speed), or the reseting procedure of regulation electric expansion valve.So as to according to above-mentioned pre- If Computer mode control rule so that the carry out cryogenic refrigeration that above-mentioned domestic air conditioning can be reliable, lasting, so as to effective Ground provides the running environment suitable for computer room, and be particularly suitable for use in small communication station environment.Therefore, user is with for small communication station Refrigeration demand when, can directly use above-mentioned domestic air conditioning, without use existing air conditioner in machine room, be effectively reduced Cost, and reduce the complexity of installation.
The control method of domestic air conditioning provided by the invention, by controller when receiving Computer mode open command, Control the domestic air conditioning to enter Computer mode, and freeze according to domestic air conditioning described in default Computer mode control rule control Operation, so as to ensure that domestic air conditioning can reliably carry out cryogenic refrigeration, and then domestic air conditioning is caused to be applied to building environment.
Further, the first embodiment of the control method based on domestic air conditioning of the present invention, the invention also provides family expenses The second embodiment of the control method of air-conditioning, step S20 include：
When detecting that current indoor temperature is more than the first temperature threshold, the controller controls the compressor according to the One preset upper limit frequency is run；
When detecting that current indoor temperature is less than second temperature threshold value, the controller controls the compressor according to pre- If lower frequency limit is run；
Current indoor temperature is being detected more than or equal to the second temperature threshold value and less than or equal to the described first temperature When spending threshold value, the controller determines the running frequency of the compressor according to current design temperature and current indoor temperature, and The compressor is controlled to be run according to the running frequency of determination；
Wherein, first temperature threshold is more than the second temperature threshold value, and the first preset upper limit frequency is more than institute State pre-determined lower limit frequency.
In the present embodiment, the size of the first temperature threshold can be configured according to being actually needed, it is preferable that the first temperature Spend threshold value can be 30 DEG C to 38 DEG C between, it is further preferable that the first temperature threshold can be 35 DEG C.Second temperature threshold value it is big It is small to be configured according to being actually needed, it is preferable that second temperature threshold value can be 0 DEG C to 10 DEG C between, it is further preferable that Second temperature threshold value can be 0 DEG C.
The size of above-mentioned first preset upper limit frequency can be configured according to being actually needed, it is preferable that first presets Limit the rated limit frequency of frequency relatively compressor.For example, above-mentioned domestic air conditioning is (such as common under non-Computer mode Under refrigeration mode or heating mode), its default maximum frequency of operation is set to Fmax, then above-mentioned first preset upper limit frequency is preferred For more than Fmax.In the present embodiment, the first preset upper limit frequency is preferably 1.1Fmax.
The size of above-mentioned pre-determined lower limit frequency can be configured according to being actually needed.Preferably, above-mentioned domestic air conditioning exists Under non-Computer mode (such as under common refrigeration mode or heating mode), its default minimum running frequency is set to Fmin (Fmax>Fmin), then above-mentioned pre-determined lower limit frequency is preferably equal to Fmin.
Optionally, the controller determines the compressor according to the difference of current design temperature and current indoor temperature Running frequency, for example, the corresponding relation of difference and running frequency can be preset with, according to current design temperature and current indoor temperature The difference of degree, the running frequency according to corresponding to determining above-mentioned corresponding relation can be connect.
The present embodiment is by the way that when detecting that current indoor temperature is more than the first temperature threshold, control compressor is according to larger The operation of the first preset upper limit frequency, and when detecting that current indoor temperature is less than second temperature threshold value, still control is compressed Machine is run according to less pre-determined lower limit frequency, so as to keep more reliable cryogenic refrigeration operation.
Further, it is big in current indoor temperature in order to further improve reliability of the domestic air conditioning in cryogenic refrigeration In or equal to the second temperature threshold value and when being less than or equal to first temperature threshold, the controller controls compressor The step of being run according to the running frequency of determination includes：
It is more than the 3rd temperature threshold in current outdoor temperature, and the running frequency determined is more than the second preset upper limit frequency During rate, the controller controls the compressor to be run according to the second preset upper limit frequency；
It is less than the 4th temperature threshold in current outdoor temperature, and the running frequency determined is more than the 3rd preset upper limit frequency During rate, the controller controls the compressor to be run according to the 3rd preset upper limit frequency；
When being more than or equal to the 4th temperature threshold in current outdoor temperature, and being less than or equal to three temperature thresholds, The controller controls the compressor to be run according to the running frequency of determination；
Wherein, the 3rd temperature threshold is more than the 4th temperature threshold, and the second preset upper limit frequency is more than institute State the 3rd preset upper limit frequency.
It should be noted that detect current indoor temperature be more than or equal to the second temperature threshold value and be less than or During equal to first temperature threshold, the controller is according to determining the difference of current design temperature and current indoor temperature The running frequency of compressor.
Preferably, it is more than the 3rd temperature threshold in current outdoor temperature, and the running frequency determined is less than or equal to During the second preset upper limit frequency, the controller controls the compressor to be run according to the running frequency of determination.
Preferably, it is less than the 4th temperature threshold in current outdoor temperature, and the running frequency determined is less than or equal to During the 3rd preset upper limit frequency, the controller controls the compressor to be run according to the running frequency of determination；
In the present embodiment, the size of above-mentioned 3rd temperature threshold can be configured according to being actually needed, it is preferable that the Three temperature thresholds can be 36 DEG C to 40 DEG C between, it is further preferable that the 3rd temperature threshold can be 38 DEG C.Above-mentioned 4th temperature The size of threshold value can be configured according to being actually needed, it is preferable that the 4th temperature threshold can be 0 DEG C to 6 DEG C between, more Preferably, the 4th temperature threshold can be 0 DEG C.
The size of above-mentioned second preset upper limit frequency can be configured according to being actually needed, it is preferable that second presets Limit the rated limit frequency of frequency relatively compressor.For example, above-mentioned second preset upper limit frequency is preferably greater than Fmax.This In embodiment, the second preset upper limit frequency is preferably equal to 1.1Fmax.
The size of above-mentioned 3rd preset upper limit frequency can be configured according to being actually needed.Preferably, the above-mentioned 3rd is pre- If upper limiting frequency is preferably less than Fmax, in the present embodiment, the 3rd preset upper limit frequency is preferably equal to 0.7Fmax.
Further, the first or second embodiments of the control method based on the invention described above domestic air conditioning, the present invention is also The 3rd embodiment of the control method of domestic air conditioning is proposed, step S20 includes：Detecting corresponding to the indoor heat exchanger When coil temperature in the first preset temperature section by switching in the second preset temperature section, by the rotating speed of the indoor fan by Current level is adjusted to default wind speed rank corresponding to the second preset temperature section.
In the present embodiment, some temperature ranges can be preset, the present embodiment is carried out exemplified by setting three temperature ranges Illustrate, first preset temperature section is the section more than 4 DEG C, and second preset temperature section is more than 0 DEG C and is less than or waits In 4 DEG C of section, the 3rd preset temperature section is the section less than or equal to 0 DEG C.Above-mentioned each preset temperature section is corresponding Default wind speed rank can be configured according to being actually needed.For example, wind speed is preset corresponding to first preset temperature section Rank can be apoplexy pattern, and it can be high wind pattern that wind speed rank is preset corresponding to second preset temperature section, the 3rd It can be high wind pattern that wind speed rank is preset corresponding to preset temperature section.It should be noted that in general domestic air conditioning except Outside with above-mentioned three kinds default wind speed ranks, also with silent mode and low wind pattern.After domestic air conditioning enters Computer mode, Above-mentioned silent mode and low wind pattern will be cancelled, and when being currently set to silent mode or low wind pattern, equal default setting is Apoplexy pattern.
When coil temperature corresponding to heat exchanger changes indoors, and the coil temperature difference position changed after preceding and change In in two above-mentioned preset temperature sections, then the preset temperature section where coil temperature before changing is above-mentioned first default Temperature range, the preset temperature section where the coil temperature after change are above-mentioned second preset temperature section.
For example, the temperature before coil temperature conversion corresponding to heat exchanger is 5 DEG C indoors, and the wind speed level set before changing Not Wei apoplexy when, through after a period of time, controller detects that coil temperature corresponding to indoor heat exchanger is changed to 3 DEG C, therefore, The section where temperature after coil temperature change is above-mentioned second preset temperature section (i.e. more than 0 DEG C and less than or equal to 4 DEG C section), it is high wind that wind speed rank is preset corresponding to the section, and therefore, controller is adjusted the rotating speed of indoor fan by apoplexy Whole paramount wind.Again through after a period of time, controller detects that coil temperature is changed to -1 DEG C corresponding to indoor heat exchanger, because This, the section where temperature after coil temperature change is the above-mentioned 3rd preset temperature section (area i.e. more than or equal to 0 DEG C Between), default wind speed rank corresponding to the section is high wind, and therefore, controller is adjusted the rotating speed of indoor fan to strong by high wind Wind.Again through after a period of time, controller detects that coil temperature corresponding to indoor heat exchanger is changed to 1 DEG C, therefore, coil pipe temperature The section where temperature after degree change is above-mentioned second preset temperature section (area i.e. more than 0 DEG C and less than or equal to 4 DEG C Between), default wind speed rank corresponding to the section is high wind, and therefore, controller is adjusted the rotating speed of indoor fan by high wind paramount Wind.
It should be noted that the temperature before coil temperature conversion corresponding to heat exchanger is 5 DEG C indoors, and set before changing Wind speed rank when being high wind or high wind, through after a period of time, controller detects coil temperature corresponding to indoor heat exchanger Be changed to 3 DEG C, the section where temperature after coil temperature change for above-mentioned second preset temperature section (i.e. more than 0 DEG C and Section less than or equal to 4 DEG C), default wind speed rank corresponding to the section is high wind, and now, controller will not change interior The rotating speed of blower fan.
Further, the first to the 3rd any embodiment of the control method based on the invention described above domestic air conditioning, this hair The fourth embodiment of the bright control method that also proposed domestic air conditioning, step S20 include：
When detecting that coil temperature corresponding to the outdoor heat exchanger is more than five temperature thresholds, the controller control The outdoor fan is run according to the first preset upper limit rotating speed；
When detecting that coil temperature corresponding to the outdoor heat exchanger is less than six temperature thresholds, the controller control The outdoor fan is run according to the first pre-determined lower limit rotating speed；
Coil temperature corresponding to the outdoor heat exchanger is being detected more than or equal to the 6th temperature threshold and is being less than Or during equal to five temperature threshold, the controller determines the rotating speed of the outdoor fan according to current outdoor temperature, and The outdoor fan is controlled to be run according to the rotating speed of determination；
Wherein, the 5th temperature threshold is more than the 6th temperature threshold, and the first preset upper limit rotating speed is more than institute State the first pre-determined lower limit rotating speed.
In the present embodiment, the size of the 5th temperature threshold can be configured according to being actually needed, it is preferable that the 5th temperature Spend threshold value can be 45 DEG C to 50 DEG C between, it is further preferable that the 5th temperature threshold can be 48 DEG C.6th temperature threshold it is big It is small to be configured according to being actually needed, it is preferable that the 6th temperature threshold can be 15 DEG C to 20 DEG C between, be more highly preferred to Ground, second temperature threshold value can be 15 DEG C.
The size of above-mentioned first preset upper limit rotating speed can be configured according to being actually needed, it is preferable that first presets Limit the rated limit rotating speed of rotating speed relatively outdoor fan.For example, above-mentioned domestic air conditioning is (such as common under non-Computer mode Refrigeration mode or heating mode under), the default maximum running speed of its outdoor fan is set to Nmax, then above-mentioned first it is default on It is preferably greater than Nmax to limit rotating speed.In the present embodiment, the first preset upper limit rotating speed is preferably 1.1Nmax.
The size of above-mentioned first pre-determined lower limit rotating speed can be configured according to being actually needed.Preferably, above-mentioned family expenses are empty Adjust under non-Computer mode (such as under common refrigeration mode or heating mode), the default minimum running speed of its outdoor fan It is set to Nmin (Nmax>Nmin), then above-mentioned first pre-determined lower limit rotating speed is preferably equal to Nmin.
The controller determines that the mode of the rotating speed of the outdoor fan is referred to existing skill according to current outdoor temperature Art, for example, the corresponding relation of outdoor temperature and outdoor fan rotating speed can be preset with, according to current outdoor temperature, root can be connect According to outdoor fan rotating speed corresponding to the determination of above-mentioned corresponding relation.
The present embodiment is by when detecting that coil temperature corresponding to outdoor heat exchanger is more than five temperature thresholds, control room Outer blower fan is run according to larger the first preset upper limit rotating speed, and is detecting that coil temperature corresponding to outdoor heat exchanger is less than the During six temperature thresholds, still outdoor fan is controlled to be run according to less first pre-determined lower limit rotating speed, so as to keep more Reliable cryogenic refrigeration operation.
Further, in order to further improve reliability of the domestic air conditioning in cryogenic refrigeration, in the outdoor heat exchanger It is described when corresponding coil temperature is more than or equal to the 6th temperature threshold and is less than or equal to five temperature threshold The step of controller controls outdoor fan to be run according to the rotating speed of determination includes：
When current outdoor temperature is more than seven temperature thresholds, the controller controls the outdoor fan pre- according to second If upper limit rotating speed is run；
It is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is more than the 3rd and preset During upper limit rotating speed, the controller controls the outdoor fan to be run according to the 3rd preset upper limit rotating speed；
It is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is less than second and preset During lower limit rotating speed, the controller controls the outdoor fan to be run according to the second pre-determined lower limit rotating speed；
It is more than or equal to the 8th temperature threshold in current outdoor temperature, and is less than or equal to the 7th temperature threshold When, the controller controls the outdoor fan to be run according to the rotating speed of the outdoor fan of determination；
Wherein, the 7th temperature threshold is more than the 8th temperature threshold, and the second preset upper limit rotating speed is more than institute The 3rd preset upper limit rotating speed is stated, the 3rd preset upper limit rotating speed is more than the second pre-determined lower limit rotating speed.
It should be noted that detecting that it is warm that coil temperature corresponding to the outdoor heat exchanger is more than or equal to the described 6th When spending threshold value and being less than or equal to five temperature threshold, the controller determines the outdoor according to current outdoor temperature The rotating speed of blower fan.
Preferably, it is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is less than Or equal to the 3rd preset upper limit rotating speed and when being more than the second pre-determined lower limit rotating speed, the controller controls the outdoor fan Rotating speed according to the outdoor fan of determination is run；
In the present embodiment, the size of above-mentioned 7th temperature threshold can be configured according to being actually needed, it is preferable that the Seven temperature thresholds can be 36 DEG C to 40 DEG C between, it is further preferable that the 7th temperature threshold can be 38 DEG C.Above-mentioned 8th temperature The size of threshold value can be configured according to being actually needed, it is preferable that the 8th temperature threshold can be 0 DEG C to 6 DEG C between, more Preferably, the 8th temperature threshold can be 0 DEG C.
The size of above-mentioned second preset upper limit rotating speed can be configured according to being actually needed, it is preferable that second presets Limit the rated limit rotating speed of rotating speed relatively outdoor fan.For example, above-mentioned second preset upper limit rotating speed is preferably greater than Nmax. In the present embodiment, the second preset upper limit rotating speed is preferably equal to 1.1Nmax.
The size of above-mentioned 3rd preset upper limit rotating speed can be configured according to being actually needed.Preferably, the above-mentioned 3rd is pre- If upper limit rotating speed is preferably less than Nmax, in the present embodiment, the 3rd preset upper limit rotating speed is preferably equal to outdoor fan in low wind Preset rotation speed under pattern.The size of above-mentioned second pre-determined lower limit rotating speed can be configured according to being actually needed.Preferably, on State the second pre-determined lower limit rotating speed and be less than Nmax, in the present embodiment, the second pre-determined lower limit rotating speed is preferably equal to 0.8Nmin.
Further, in order to improve the reliability of electric expansion valve, electric expansion valve is avoided stuck phenomenon occur, so as to enter One step improves reliability of the domestic air conditioning in cryogenic refrigeration, the control method based on the invention described above domestic air conditioning first to 4th any embodiment, the invention also provides the 5th embodiment of the control method of domestic air conditioning, step S20 includes：
When detecting that the electric expansion valve resets, the electric expansion valve is first controlled to be adjusted by current aperture to default Positive maximum opening, and after lasting preset time, then control the electric expansion valve to recover to the current aperture, to complete Reset.
In the present embodiment, electric expansion valve takes the positive, mode of timing to be resetted.For example, in electric expansion valve The current step of aperture+200 when, electric expansion valve need reset when, then first by the step of+200 step forward direction valve opening+500.It is above-mentioned default Time can be configured according to being actually needed, for example, could be arranged to 60 seconds.After continuing 60 seconds, then electric expansion valve is extensive Multiple extremely+200 steps.Preferably, resetted once at interval of 120 hours.
Above-mentioned domestic air conditioning (such as under common refrigeration mode or heating mode), its default electricity under non-Computer mode Sub- expansion valve minimum aperture is set to Dmin, it is further preferable that in order to further prevent electric expansion valve from stuck phenomenon occur, in machine Under room pattern, the minimum aperture of electric expansion valve is more than Dmin, and in the present embodiment, the minimum aperture of electric expansion valve is preferably 1.2Dmin。
It should be noted that the control method of above-mentioned domestic air conditioning second, third, the 4th and the 5th embodiment can phase Mutual connected applications.
The present invention further provides a kind of domestic air conditioning, it is particularly possible to is a kind of domestic variable frequency air-conditioning.Reference picture 2, Fig. 2 are The high-level schematic functional block diagram of domestic air conditioning preferred embodiment of the present invention, the domestic air conditioning include controller 10, compressor 20, room Inner blower 30, indoor heat exchanger (not indicated in figure), outdoor fan 40, outdoor heat exchanger (not indicated in figure) and electric expansion valve 50.Domestic air conditioning is generally used in the environment such as office and house, generally comprises refrigeration mode and heating mode.In refrigeration mode or Under heating mode, domestic air conditioning is when adjusting the running frequency of compressor 20, typically according to design temperature and current indoor temperature Between difference come running frequency corresponding to determining, i.e., be typically preset with the corresponding relation of difference and running frequency, difference is bigger, Running frequency is bigger；Domestic air conditioning is when adjusting 30 rotating speed of indoor fan, typically according to the wind speed pattern of the setting of user come really The rotating speed of indoor fan 30 is determined, for example, the wind speed pattern that user can set can be Jing Yin, low wind, apoplexy, high wind and high wind Deng；Domestic air conditioning is when adjusting 40 rotating speed of outdoor fan, typically according to default outdoor temperature and pair of the rotating speed of outdoor fan 40 It should be related to, directly determine the rotating speed of outdoor fan 40 corresponding to current outdoor temperature.
Domestic air conditioning provided by the invention can also be applied to machine in addition to it can be applied in the environment such as office and house In room environment, that is, it can be also used for providing the equipment such as the main frame in computer room, processor long-term and lasting cryogenic refrigeration environment. Therefore, domestic air conditioning provided by the invention is in addition to including common refrigeration mode and heating mode, in addition to is applied to computer room Computer mode in environment, under Computer mode, domestic air conditioning provided by the invention can provide reliable, lasting cryogenic refrigeration Environment.
In the present embodiment, the controller 10 controls the domestic air conditioning when receiving Computer mode open command Into Computer mode, and according to domestic air conditioning refrigerating operaton described in default Computer mode control rule control, so that the family It is applied to building environment with air-conditioning.
In the present embodiment, " Computer mode " button can be set up on the remote control of the domestic air conditioning, is pressed triggering this During key, remote control can send Computer mode open command to the controller 10；Or can also be in the panel of domestic air conditioning On set up " Computer mode " control, when triggering the control, you can be considered as controller 10 and have received Computer mode open command.
Under Computer mode, domestic air conditioning is merely able to freeze.
Preferably, in order to ensure that domestic air conditioning can continuously and effectively be freezed under Computer mode, the controller 10 when receiving preset failure signal, still is able to control the domestic air conditioning to maintain refrigeration operational state.Preset failure is believed Number for example can be fault-signal corresponding to fault-signal corresponding to default sensor or other default components, as long as not Influence refrigerating operaton.
It is further preferable that when controller 10 receives fault message, output alarm signal.The form of output alarm signal Such as can be：Display panel display alarm information is controlled, either controls display lamp output alarm signal or control buzzer Output alarm signal.When controller 10 controls display lamp output alarm signal, display lamp can be by flashing or persistently sending out The form output alarm signal of light.It is further preferable that controller 10 will persistently control above-mentioned display panel, display lamp or buzzer Output alarm signal, untill trouble shooting corresponding to the alarm signal.Exist so as to be effectively improved above-mentioned domestic air conditioning The reliability of cryogenic refrigeration is carried out under Computer mode.
It is further preferable that under Computer mode, domestic air conditioning still is able to refrigerating operaton at relatively low ambient temperatures.Example Such as, when outdoor temperature is less than -15 DEG C, domestic air conditioning still is able to maintain refrigerating operaton.It is further preferable that under Computer mode, Domestic air conditioning will not reach temperature and shut down, i.e., when temperature reaches design temperature indoors, domestic air conditioning still is able to keep with predeterminated frequency Refrigerating operaton.
Above-mentioned default Computer mode control rule for example can be but be not limited to following several ways：According to indoor temperature Adjusting the running frequency of compressor 20, (such as indoor temperature is when be higher than a certain preset temperature threshold value, then the fortune of control compressor 20 Line frequency is run according to higher frequency), either according to outdoor temperature adjust compressor 20 maximum frequency of operation or according to (such as the coil temperature of indoor heat exchanger is default less than a certain for the rotating speed of the coil temperature regulation indoor fan 30 of indoor heat exchanger During temperature threshold, then control indoor fan 30 to be run according to higher rotating speed), or according to the coil temperature of outdoor heat exchanger and Outdoor temperature regulation outdoor fan 40 rotating speed and maximum (top) speed (such as outdoor heat exchanger coil temperature be more than it is a certain default During temperature threshold, then outdoor fan 40 is controlled to be run according to higher rotating speed), or the reset of regulation electric expansion valve 50 Journey.So as to control rule according to above-mentioned default Computer mode so that the carry out low temperature that above-mentioned domestic air conditioning can be reliable, lasting Refrigeration, so as to effectively provide the running environment suitable for computer room, be particularly suitable for use in small communication station environment.Therefore, user When with refrigeration demand for small communication station, above-mentioned domestic air conditioning can be directly used, without using existing Air conditioner in machine room, cost is significantly reduced, and reduce the complexity of installation.
Domestic air conditioning provided by the invention, by controller 10 when receiving Computer mode open command, described in control Domestic air conditioning enters Computer mode, and controls domestic air conditioning refrigerating operaton described in rule control according to default Computer mode, from And ensure that domestic air conditioning can reliably carry out cryogenic refrigeration, and then cause domestic air conditioning to be applied to building environment.
Further, the first embodiment based on domestic air conditioning of the present invention, the invention also provides the second of domestic air conditioning Embodiment, the domestic air conditioning also include being used for the first temperature sensor for detecting indoor temperature；
The controller 10 receives the current indoor temperature signal of the first temperature sensor output, and detecting When stating current indoor temperature signal and being more than the first temperature threshold, the compressor 20 is controlled to be transported according to the first preset upper limit frequency OK；
The controller 10 controls the compressor when detecting that current indoor temperature signal is less than second temperature threshold value 20 run according to pre-determined lower limit frequency；
The controller 10 is detecting current indoor temperature signal more than or equal to the second temperature threshold value and is being less than Or during equal to first temperature threshold, the operation of the compressor 20 is determined according to current design temperature and current indoor temperature Frequency, and control the compressor 20 to be run according to the running frequency of determination；
Wherein, first temperature threshold is more than the second temperature threshold value, and the first preset upper limit frequency is more than institute State pre-determined lower limit frequency.
In the present embodiment, the size of the first temperature threshold can be configured according to being actually needed, it is preferable that the first temperature Spend threshold value can be 30 DEG C to 38 DEG C between, it is further preferable that the first temperature threshold can be 35 DEG C.Second temperature threshold value it is big It is small to be configured according to being actually needed, it is preferable that second temperature threshold value can be 0 DEG C to 10 DEG C between, it is further preferable that Second temperature threshold value can be 0 DEG C.
The size of above-mentioned first preset upper limit frequency can be configured according to being actually needed, it is preferable that first presets Limit the rated limit frequency of frequency relatively compressor 20.For example, above-mentioned domestic air conditioning is (such as common under non-Computer mode Refrigeration mode or heating mode under), its default maximum frequency of operation is set to Fmax, then above-mentioned first preset upper limit frequency is excellent Elect as and be more than Fmax.In the present embodiment, the first preset upper limit frequency is preferably 1.1Fmax.
The size of above-mentioned pre-determined lower limit frequency can be configured according to being actually needed.Preferably, above-mentioned domestic air conditioning exists Under non-Computer mode (such as under common refrigeration mode or heating mode), its default minimum running frequency is set to Fmin (Fmax>Fmin), then above-mentioned pre-determined lower limit frequency is preferably equal to Fmin.
Optionally, the controller 10 determines the compressor according to the difference of current design temperature and current indoor temperature 20 running frequency, for example, the corresponding relation of difference and running frequency can be preset with, according to current design temperature and work as cup The difference of interior temperature, the running frequency according to corresponding to determining above-mentioned corresponding relation can be connect.
The present embodiment by when detecting that current indoor temperature is more than the first temperature threshold, control compressor 20 according to compared with Big the first preset upper limit frequency operation, and when detecting that current indoor temperature is less than second temperature threshold value, still control is pressed Contracting machine 20 is run according to less pre-determined lower limit frequency, so as to keep more reliable cryogenic refrigeration operation.
Further, in order to further improve reliability of the domestic air conditioning in cryogenic refrigeration, the domestic air conditioning also wraps Include the second temperature sensor for detecting outdoor temperature；
The controller 10 is additionally operable to detecting that current indoor temperature is more than or equal to the second temperature threshold value and small When first temperature threshold, the compressor is determined according to the difference of current design temperature and current indoor temperature 20 running frequency；
The controller 10 is additionally operable to receive the current outdoor temperature signal of the second temperature sensor output, and is examining Measure current outdoor temperature signal and be more than the 3rd temperature threshold, and the running frequency determined is more than the second preset upper limit frequency When, control the compressor 20 to be run according to the second preset upper limit frequency；Or detecting that current outdoor temperature is less than 4th temperature threshold, and the running frequency determined is when being more than the 3rd preset upper limit frequency, control the compressor 20 according to The 3rd preset upper limit frequency operation；Or detecting that current outdoor temperature is more than or equal to the 4th temperature threshold, And when being less than or equal to three temperature thresholds, the compressor 20 is controlled to be run according to the running frequency of determination；
Wherein, the 3rd temperature threshold is more than the 4th temperature threshold, and the second preset upper limit frequency is more than institute State the 3rd preset upper limit frequency.
Preferably, the controller 10 is detecting that current outdoor temperature is more than the 3rd temperature threshold, and determines described When running frequency is less than or equal to the second preset upper limit frequency, the controller 10 controls institute of the compressor 20 according to determination State running frequency operation.
Preferably, the controller 10 is detecting that current outdoor temperature is less than the 4th temperature threshold, and determines described When running frequency is less than or equal to the 3rd preset upper limit frequency, the controller 10 controls institute of the compressor 20 according to determination State running frequency operation；
In the present embodiment, the size of above-mentioned 3rd temperature threshold can be configured according to being actually needed, it is preferable that the Three temperature thresholds can be 36 DEG C to 40 DEG C between, it is further preferable that the 3rd temperature threshold can be 38 DEG C.Above-mentioned 4th temperature The size of threshold value can be configured according to being actually needed, it is preferable that the 4th temperature threshold can be 0 DEG C to 6 DEG C between, more Preferably, the 4th temperature threshold can be 0 DEG C.
The size of above-mentioned second preset upper limit frequency can be configured according to being actually needed, it is preferable that second presets Limit the rated limit frequency of frequency relatively compressor 20.For example, above-mentioned second preset upper limit frequency is preferably greater than Fmax. In the present embodiment, the second preset upper limit frequency is preferably equal to 1.1Fmax.
The size of above-mentioned 3rd preset upper limit frequency can be configured according to being actually needed.Preferably, the above-mentioned 3rd is pre- If upper limiting frequency is preferably less than Fmax, in the present embodiment, the 3rd preset upper limit frequency is preferably equal to 0.7Fmax.
Further, the first or second embodiments based on the invention described above domestic air conditioning, the invention also provides family expenses The 3rd embodiment of air-conditioning, the domestic air conditioning also include the 3rd temperature for being used to detect the coil temperature of the indoor heat exchanger Sensor；
The controller 10 receives coil temperature corresponding to the indoor heat exchanger of the three-temperature sensor output, And detecting coil temperature corresponding to the indoor heat exchanger by switching to the second preset temperature in the first preset temperature section When in section, the rotating speed of the indoor fan 30 is adjusted to corresponding to the second preset temperature section as current level and preset Wind speed rank.
In the present embodiment, some temperature ranges can be preset, the present embodiment is carried out exemplified by setting three temperature ranges Illustrate, first preset temperature section is the section more than 4 DEG C, and second preset temperature section is more than 0 DEG C and is less than or waits In 4 DEG C of section, the 3rd preset temperature section is the section less than or equal to 0 DEG C.Above-mentioned each preset temperature section is corresponding Default wind speed rank can be configured according to being actually needed.For example, wind speed is preset corresponding to first preset temperature section Rank can be apoplexy pattern, and it can be high wind pattern that wind speed rank is preset corresponding to second preset temperature section, the 3rd It can be high wind pattern that wind speed rank is preset corresponding to preset temperature section.It should be noted that in general domestic air conditioning except Outside with above-mentioned three kinds default wind speed ranks, also with silent mode and low wind pattern.After domestic air conditioning enters Computer mode, Above-mentioned silent mode and low wind pattern will be cancelled, and when being currently set to silent mode or low wind pattern, equal default setting is Apoplexy pattern.
When coil temperature corresponding to heat exchanger changes indoors, and the coil temperature difference position changed after preceding and change In in two above-mentioned preset temperature sections, then the preset temperature section where coil temperature before changing is above-mentioned first default Temperature range, the preset temperature section where the coil temperature after change are above-mentioned second preset temperature section.
For example, the temperature before coil temperature conversion corresponding to heat exchanger is 5 DEG C indoors, and the wind speed level set before changing Not Wei apoplexy when, through after a period of time, controller 10 detects that coil temperature corresponding to indoor heat exchanger is changed to 3 DEG C, because This, the section where temperature after coil temperature change (i.e. more than 0 DEG C and is less than or waited for above-mentioned second preset temperature section In 4 DEG C of section), it is high wind that wind speed rank is preset corresponding to the section, therefore, controller 10 by the rotating speed of indoor fan 30 by Apoplexy adjusts paramount wind.Again through after a period of time, controller 10 detects that coil temperature is changed to corresponding to indoor heat exchanger- 1 DEG C, therefore, the section where temperature after coil temperature change is above-mentioned 3rd preset temperature section (i.e. more than or equal to 0 DEG C section), it is high wind that wind speed rank is preset corresponding to the section, and therefore, controller 10 is by the rotating speed of indoor fan 30 by height Wind is adjusted to high wind.Again through after a period of time, controller 10 detects that coil temperature is changed to 1 corresponding to indoor heat exchanger DEG C, therefore, the section where temperature after coil temperature change is (i.e. more than 0 DEG C and small for above-mentioned second preset temperature section In or equal to 4 DEG C of section), it is high wind to preset wind speed rank corresponding to the section, and therefore, controller 10 is by indoor fan 30 Rotating speed adjusts paramount wind by high wind.
It should be noted that the temperature before coil temperature conversion corresponding to heat exchanger is 5 DEG C indoors, and set before changing Wind speed rank when being high wind or high wind, through after a period of time, controller 10 detects coil pipe temperature corresponding to indoor heat exchanger Degree is changed to 3 DEG C, and the section where temperature after coil temperature change is above-mentioned second preset temperature section (i.e. more than 0 DEG C And the section less than or equal to 4 DEG C), default wind speed rank corresponding to the section is high wind, and now, controller 10 will not be changed The rotating speed of indoor fan 30.
Further, the first to the 3rd any embodiment based on the invention described above domestic air conditioning, the invention also provides The fourth embodiment of domestic air conditioning, the domestic air conditioning also include being used to detect the 4th of the coil temperature of the outdoor heat exchanger Temperature sensor；
The controller 10 receives coil temperature corresponding to the outdoor heat exchanger of the 4th temperature sensor output, And when detecting that coil temperature corresponding to the outdoor heat exchanger is more than five temperature thresholds, the outdoor fan 40 is controlled to press Run according to the first preset upper limit rotating speed；Or detecting that coil temperature corresponding to the outdoor heat exchanger is less than the 6th temperature threshold During value, the outdoor fan 40 is controlled to be run according to the first pre-determined lower limit rotating speed；Or detecting the outdoor heat exchanger pair The coil temperature answered is more than or equal to the 6th temperature threshold and when being less than or equal to five temperature threshold, according to ought Preceding outdoor temperature determines the rotating speed of the outdoor fan 40, and controls the outdoor fan 40 to be run according to the rotating speed of determination；
Wherein, the 5th temperature threshold is more than the 6th temperature threshold, and the first preset upper limit rotating speed is more than institute State the first pre-determined lower limit rotating speed.
In the present embodiment, the size of the 5th temperature threshold can be configured according to being actually needed, it is preferable that the 5th temperature Spend threshold value can be 45 DEG C to 50 DEG C between, it is further preferable that the 5th temperature threshold can be 48 DEG C.6th temperature threshold it is big It is small to be configured according to being actually needed, it is preferable that the 6th temperature threshold can be 15 DEG C to 20 DEG C between, be more highly preferred to Ground, second temperature threshold value can be 15 DEG C.
The size of above-mentioned first preset upper limit rotating speed can be configured according to being actually needed, it is preferable that first presets Limit the rated limit rotating speed of rotating speed relatively outdoor fan 40.For example, above-mentioned domestic air conditioning is (such as general under non-Computer mode Under logical refrigeration mode or heating mode), the default maximum running speed of its outdoor fan 40 is set to Nmax, then above-mentioned first is pre- If upper limit rotating speed is preferably greater than Nmax.In the present embodiment, the first preset upper limit rotating speed is preferably 1.1Nmax.
The size of above-mentioned first pre-determined lower limit rotating speed can be configured according to being actually needed.Preferably, above-mentioned family expenses are empty Adjust under non-Computer mode (such as under common refrigeration mode or heating mode), the default minimum operation of its outdoor fan 40 turns Speed is set to Nmin (Nmax>Nmin), then above-mentioned first pre-determined lower limit rotating speed is preferably equal to Nmin.
It is existing that the controller 10 determines that the mode of the rotating speed of the outdoor fan 40 is referred to according to current outdoor temperature There is technology, for example, the corresponding relation of outdoor temperature and the rotating speed of outdoor fan 40 can be preset with, can according to current outdoor temperature To connect the rotating speed of outdoor fan 40 according to corresponding to determining above-mentioned corresponding relation.
The present embodiment is by when detecting that coil temperature corresponding to outdoor heat exchanger is more than five temperature thresholds, control room Outer blower fan 40 is run according to the first larger preset upper limit rotating speed, and is detecting that coil temperature is less than corresponding to outdoor heat exchanger During six temperature thresholds, still outdoor fan 40 is controlled to be run according to less first pre-determined lower limit rotating speed, so as to keep More reliable cryogenic refrigeration operation.
Further, in order to further improve reliability of the domestic air conditioning in cryogenic refrigeration, the domestic air conditioning also wraps Include the second temperature sensor for detecting outdoor temperature；
The controller 10 is additionally operable to detecting that it is described that coil temperature corresponding to the outdoor heat exchanger is more than or equal to 6th temperature threshold and when being less than or equal to five temperature threshold, the outdoor fan is determined according to current outdoor temperature 40 rotating speed；
The controller 10 is additionally operable to receive the current outdoor temperature signal of the second temperature sensor output, and is working as When the outer temperature signal of cup is more than seven temperature thresholds, the outdoor fan 40 is controlled to be run according to the second preset upper limit rotating speed； Or it is less than the 8th temperature threshold in current outdoor temperature signal, and the rotating speed of the outdoor fan 40 determined is pre- more than the 3rd If during upper limit rotating speed, the outdoor fan 40 is controlled to be run according to the 3rd preset upper limit rotating speed；Or in current outdoor temperature Degree signal is less than the 8th temperature threshold, and when the rotating speed of the outdoor fan 40 determined is less than the second pre-determined lower limit rotating speed, controls The outdoor fan 40 is made to run according to the second pre-determined lower limit rotating speed；Or it is more than or equal in current outdoor temperature signal 8th temperature threshold, and when being less than or equal to seven temperature threshold, the outdoor fan 40 is controlled according to determination The rotating speed operation of the outdoor fan 40；
Wherein, the 7th temperature threshold is more than the 8th temperature threshold, and the second preset upper limit rotating speed is more than institute The 3rd preset upper limit rotating speed is stated, the 3rd preset upper limit rotating speed is more than the second pre-determined lower limit rotating speed.
Preferably, detect that current outdoor temperature is less than the 8th temperature threshold in the controller 10, and determine described When the rotating speed of outdoor fan 40 is less than or equal to the 3rd preset upper limit rotating speed and is more than the second pre-determined lower limit rotating speed, the control Device 10 processed controls the outdoor fan 40 to be run according to the rotating speed of the outdoor fan 40 of determination；
In the present embodiment, the size of above-mentioned 7th temperature threshold can be configured according to being actually needed, it is preferable that the Seven temperature thresholds can be 36 DEG C to 40 DEG C between, it is further preferable that the 7th temperature threshold can be 38 DEG C.Above-mentioned 8th temperature The size of threshold value can be configured according to being actually needed, it is preferable that the 8th temperature threshold can be 0 DEG C to 6 DEG C between, more Preferably, the 8th temperature threshold can be 0 DEG C.
The size of above-mentioned second preset upper limit rotating speed can be configured according to being actually needed, it is preferable that second presets Limit the rated limit rotating speed of rotating speed relatively outdoor fan 40.For example, above-mentioned second preset upper limit rotating speed is preferably greater than Nmax.In the present embodiment, the second preset upper limit rotating speed is preferably equal to 1.1Nmax.
The size of above-mentioned 3rd preset upper limit rotating speed can be configured according to being actually needed.Preferably, the above-mentioned 3rd is pre- If upper limit rotating speed is preferably less than Nmax, in the present embodiment, the 3rd preset upper limit rotating speed is preferably equal to outdoor fan 40 low Preset rotation speed under wind pattern.The size of above-mentioned second pre-determined lower limit rotating speed can be configured according to being actually needed.Preferably, Above-mentioned second pre-determined lower limit rotating speed is less than Nmax, and in the present embodiment, the second pre-determined lower limit rotating speed is preferably equal to 0.8Nmin.
Further, in order to improve the reliability of electric expansion valve 50, electric expansion valve 50 is avoided stuck phenomenon occur, from And reliability of the domestic air conditioning in cryogenic refrigeration is further improved, first to fourth based on the invention described above domestic air conditioning times One embodiment, the invention also provides the 5th embodiment of domestic air conditioning, the controller 10 is additionally operable to detecting the electricity When sub- expansion valve 50 resets, the electric expansion valve 50 is first controlled to be adjusted by current aperture to pre-set forward maximum opening, and After continuing preset time, then the electric expansion valve 50 is controlled to recover to the current aperture, to complete to reset.
In the present embodiment, electric expansion valve 50 takes the positive, mode of timing to be resetted.For example, in electronic expansion During the current step of aperture+200 of valve 50, when electric expansion valve 50 needs to reset, then first by the step of+200 step forward direction valve opening+500.On Stating preset time can be configured according to being actually needed, for example, could be arranged to 60 seconds.After continuing 60 seconds, then electronics is swollen Swollen valve 50 recovers to+200 steps.Preferably, resetted once at interval of 120 hours.
Above-mentioned domestic air conditioning (such as under common refrigeration mode or heating mode), its default electricity under non-Computer mode Sub- 50 minimum aperture of expansion valve is set to Dmin, it is further preferable that in order to further prevent electric expansion valve 50 from stuck phenomenon occur, Under Computer mode, the minimum aperture of electric expansion valve 50 is more than Dmin, in the present embodiment, the minimum aperture of electric expansion valve 50 Preferably 1.2Dmin.
It should be noted that above-mentioned domestic air conditioning second, third, the 4th and the 5th embodiment can be combined with each other should With.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row His property includes, so that process, method, article or device including a series of elements not only include those key elements, and And also include the other element being not expressly set out, or also include for this process, method, article or device institute inherently Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this Other identical element also be present in the process of key element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium In (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone, computer, clothes Be engaged in device, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (12)

1. a kind of control method of domestic air conditioning, applied in domestic air conditioning, the domestic air conditioning include controller, compressor, Indoor fan, indoor heat exchanger, outdoor fan, outdoor heat exchanger and electric expansion valve, it is characterised in that the domestic air conditioning Control method includes：
The controller controls the domestic air conditioning to enter Computer mode when receiving Computer mode open command；
The controller is according to domestic air conditioning refrigerating operaton described in default Computer mode control rule control, so that the family expenses Air-conditioning is applied to building environment；
The controller is according to domestic air conditioning refrigerating operaton described in default Computer mode control rule control, so that the family expenses Air-conditioning, which is applied to the step of building environment, to be included：
When detecting that current indoor temperature is more than the first temperature threshold, the controller controls the compressor pre- according to first If upper limiting frequency is run；
When detecting that current indoor temperature is less than second temperature threshold value, the controller controls the compressor according to setting in advance Limit frequency operation；
Current indoor temperature is being detected more than or equal to the second temperature threshold value and is being less than or equal to first temperature threshold During value, the controller determines the running frequency of the compressor according to current design temperature and current indoor temperature, and controls The compressor is run according to the running frequency of determination；
Wherein, first temperature threshold is more than the second temperature threshold value, and the first preset upper limit frequency is more than described pre- If lower frequency limit.
2. the control method of domestic air conditioning as claimed in claim 1, it is characterised in that be more than or equal in current indoor temperature The second temperature threshold value and when being less than or equal to first temperature threshold, the controller controls compressor according to determination The running frequency operation the step of include：
It is more than the 3rd temperature threshold in current outdoor temperature, and the running frequency determined is more than the second preset upper limit frequency When, the controller controls the compressor to be run according to the second preset upper limit frequency；
It is more than the 3rd temperature threshold in current outdoor temperature, and the running frequency determined is less than or equal to the second preset upper limit During frequency, the controller controls the compressor to be run according to the running frequency of determination；
It is less than the 4th temperature threshold in current outdoor temperature, and the running frequency determined is more than the 3rd preset upper limit frequency When, the controller controls the compressor to be run according to the 3rd preset upper limit frequency；
It is less than the 4th temperature threshold in current outdoor temperature, and the running frequency determined is less than or equal to the 3rd preset upper limit During frequency, the controller controls the compressor to be run according to the running frequency of determination；
It is described when being more than or equal to the 4th temperature threshold in current outdoor temperature, and being less than or equal to three temperature thresholds Controller controls the compressor to be run according to the running frequency of determination；
Wherein, the 3rd temperature threshold is more than the 4th temperature threshold, and the second preset upper limit frequency is more than described the Three preset upper limit frequencies.
3. the control method of domestic air conditioning as claimed in claim 1, it is characterised in that the controller is according to default computer room Domestic air conditioning refrigerating operaton described in Schema control rule control, so that the domestic air conditioning wraps the step of being applied to building environment Include：
Detecting coil temperature corresponding to the indoor heat exchanger by switching to the second default temperature in the first preset temperature section When spending in section, the rotating speed of the indoor fan is adjusted to corresponding to the second preset temperature section as current level and preset Wind speed rank.
4. the control method of domestic air conditioning as claimed in claim 1, it is characterised in that the controller is according to default computer room Domestic air conditioning refrigerating operaton described in Schema control rule control, so that the domestic air conditioning wraps the step of being applied to building environment Include：
When detecting that coil temperature corresponding to the outdoor heat exchanger is more than five temperature thresholds, described in the controller control Outdoor fan is run according to the first preset upper limit rotating speed；
When detecting that coil temperature corresponding to the outdoor heat exchanger is less than six temperature thresholds, described in the controller control Outdoor fan is run according to the first pre-determined lower limit rotating speed；
Detecting that coil temperature corresponding to the outdoor heat exchanger is more than or equal to the 6th temperature threshold and is less than or waits When five temperature threshold, the controller determines the rotating speed of the outdoor fan according to current outdoor temperature, and controls The outdoor fan is run according to the rotating speed of determination；
Wherein, the 5th temperature threshold is more than the 6th temperature threshold, and the first preset upper limit rotating speed is more than described the One pre-determined lower limit rotating speed.
5. the control method of domestic air conditioning as claimed in claim 4, it is characterised in that in disk corresponding to the outdoor heat exchanger When pipe temperature is more than or equal to the 6th temperature threshold and is less than or equal to five temperature threshold, the controller control The step of outdoor fan processed is run according to the rotating speed of determination includes：
When current outdoor temperature is more than seven temperature thresholds, the controller controls the outdoor fan to be preset according to second Limit rotating speed operation；
It is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is more than the 3rd preset upper limit During rotating speed, the controller controls the outdoor fan to be run according to the 3rd preset upper limit rotating speed；
It is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is less than the second pre-determined lower limit During rotating speed, the controller controls the outdoor fan to be run according to the second pre-determined lower limit rotating speed；
It is less than the 8th temperature threshold in current outdoor temperature, and the rotating speed of the outdoor fan determined is pre- less than or equal to the 3rd If upper limit rotating speed and when being more than the second pre-determined lower limit rotating speed, the controller controls institute of the outdoor fan according to determination State the rotating speed operation of outdoor fan；
When being more than or equal to the 8th temperature threshold in current outdoor temperature, and being less than or equal to seven temperature threshold, The controller controls the outdoor fan to be run according to the rotating speed of the outdoor fan of determination；
Wherein, the 7th temperature threshold is more than the 8th temperature threshold, and the second preset upper limit rotating speed is more than described the Three preset upper limit rotating speeds, the 3rd preset upper limit rotating speed are more than the second pre-determined lower limit rotating speed.
6. the control method of domestic air conditioning as claimed in claim 1, it is characterised in that the controller is according to default computer room Domestic air conditioning refrigerating operaton described in Schema control rule control, so that the domestic air conditioning wraps the step of being applied to building environment Include：
When detecting that the electric expansion valve resets, the electric expansion valve is first controlled to be adjusted by current aperture to pre-set forward Maximum opening, and after lasting preset time, then control the electric expansion valve to recover to the current aperture, it is multiple to complete Position.
7. a kind of domestic air conditioning, the domestic air conditioning includes：Controller, compressor, indoor fan, indoor heat exchanger, outdoor wind Machine, outdoor heat exchanger and electric expansion valve, it is characterised in that the controller is when receiving Computer mode open command, control Make the domestic air conditioning and enter Computer mode, and according to domestic air conditioning refrigeration fortune described in default Computer mode control rule control OK, so that the domestic air conditioning is applied to building environment；
The domestic air conditioning also includes being used for the first temperature sensor for detecting indoor temperature；
The controller receives the current indoor temperature signal of the first temperature sensor output, and described current detecting When indoor temperature signal is more than the first temperature threshold, the compressor is controlled to be run according to the first preset upper limit frequency；
The controller controls the compressor according to pre- when detecting that current indoor temperature signal is less than second temperature threshold value If lower frequency limit is run；
The controller is detecting current indoor temperature signal more than or equal to the second temperature threshold value and is being less than or equal to During first temperature threshold, the running frequency of the compressor is determined according to current design temperature and current indoor temperature, and The compressor is controlled to be run according to the running frequency of determination；
Wherein, first temperature threshold is more than the second temperature threshold value, and the first preset upper limit frequency is more than described pre- If lower frequency limit.
8. domestic air conditioning as claimed in claim 7, it is characterised in that the domestic air conditioning also includes being used to detect outdoor temperature Second temperature sensor；
The controller is additionally operable to receive the current outdoor temperature signal of the second temperature sensor output, and works as detecting The outer temperature signal of cup is more than the 3rd temperature threshold, and when the running frequency determined is more than the second preset upper limit frequency, controls The compressor is made to run according to the second preset upper limit frequency；Or it is more than the 3rd temperature threshold in current outdoor temperature, And the running frequency determined controls the compressor according to described in determination when being less than or equal to the second preset upper limit frequency Running frequency is run；Or detecting that current outdoor temperature is less than the 4th temperature threshold, and the running frequency determined is big When the 3rd preset upper limit frequency, the compressor is controlled to be run according to the 3rd preset upper limit frequency；Or working as cup Outer temperature is less than the 4th temperature threshold, and when the running frequency determined is less than or equal to the 3rd preset upper limit frequency, controls The compressor is run according to the running frequency of determination；Or detecting that current outdoor temperature is more than or equal to described the Four temperature thresholds, and when being less than or equal to three temperature thresholds, control the compressor to be transported according to the running frequency of determination OK；
Wherein, the 3rd temperature threshold is more than the 4th temperature threshold, and the second preset upper limit frequency is more than described the Three preset upper limit frequencies.
9. domestic air conditioning as claimed in claim 7, it is characterised in that the domestic air conditioning also includes being used to detect the interior The three-temperature sensor of the coil temperature of heat exchanger；
The controller receives coil temperature corresponding to the indoor heat exchanger of the three-temperature sensor output, and is examining Coil temperature corresponding to the indoor heat exchanger is measured by being switched in the first preset temperature section in the second preset temperature section When, the rotating speed of the indoor fan is adjusted to presetting wind speed level corresponding to the second preset temperature section as current level Not.
10. domestic air conditioning as claimed in claim 7, it is characterised in that the domestic air conditioning also includes being used to detect the room 4th temperature sensor of the coil temperature of external heat exchanger；
The controller receives coil temperature corresponding to the outdoor heat exchanger of the 4th temperature sensor output, and is examining When measuring coil temperature corresponding to the outdoor heat exchanger and being more than five temperature thresholds, control the outdoor fan pre- according to first If upper limit rotating speed is run；Or when detecting that coil temperature corresponding to the outdoor heat exchanger is less than six temperature thresholds, control The outdoor fan is made to run according to the first pre-determined lower limit rotating speed；Or detecting coil pipe temperature corresponding to the outdoor heat exchanger When degree is more than or equal to the 6th temperature threshold and is less than or equal to five temperature threshold, according to current outdoor temperature The rotating speed of the outdoor fan is determined, and controls the outdoor fan to be run according to the rotating speed of determination；
Wherein, the 5th temperature threshold is more than the 6th temperature threshold, and the first preset upper limit rotating speed is more than described the One pre-determined lower limit rotating speed.
11. domestic air conditioning as claimed in claim 10, it is characterised in that the domestic air conditioning also includes being used to detect outdoor temp The second temperature sensor of degree；
The controller is additionally operable to receive the current outdoor temperature signal of the second temperature sensor output, and in current outdoor When temperature signal is more than seven temperature thresholds, the outdoor fan is controlled to be run according to the second preset upper limit rotating speed；Or working as The outer temperature signal of cup is less than the 8th temperature threshold, and the rotating speed of the outdoor fan determined is more than the 3rd preset upper limit rotating speed When, control the outdoor fan to be run according to the 3rd preset upper limit rotating speed；Or it is less than the in current outdoor temperature signal Eight temperature thresholds, and when the rotating speed of the outdoor fan determined is less than the second pre-determined lower limit rotating speed, control the outdoor fan Run according to the second pre-determined lower limit rotating speed；Or it is less than the 8th temperature threshold in current outdoor temperature, and determine described When the rotating speed of outdoor fan is less than or equal to the 3rd preset upper limit rotating speed and is more than the second pre-determined lower limit rotating speed, the control Device controls the outdoor fan to be run according to the rotating speed of the outdoor fan of determination；Or it is more than in current outdoor temperature signal Or equal to the 8th temperature threshold, and when being less than or equal to seven temperature threshold, the outdoor fan is controlled according to true The rotating speed operation of the fixed outdoor fan；
Wherein, the 7th temperature threshold is more than the 8th temperature threshold, and the second preset upper limit rotating speed is more than described the Three preset upper limit rotating speeds, the 3rd preset upper limit rotating speed are more than the second pre-determined lower limit rotating speed.
12. domestic air conditioning as claimed in claim 7, it is characterised in that the controller is additionally operable to detecting the electronics Expansion valve reset when, first control the electric expansion valve to be adjusted by current aperture to pre-set forward maximum opening, and continue it is pre- If after the time, then the electric expansion valve is controlled to recover to the current aperture, to complete to reset.
CN201510585787.7A 2015-09-15 2015-09-15 The control method and domestic air conditioning of domestic air conditioning Active CN105135622B (en)

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