CN103486689A - Air conditioner control method and device - Google Patents
Air conditioner control method and device Download PDFInfo
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- CN103486689A CN103486689A CN201310413933.9A CN201310413933A CN103486689A CN 103486689 A CN103486689 A CN 103486689A CN 201310413933 A CN201310413933 A CN 201310413933A CN 103486689 A CN103486689 A CN 103486689A
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Abstract
The invention discloses an air conditioner control method. The method includes the steps: when an air conditioner operates for a first preset time, controlling an electronic expansion valve to operate with opening B, and starting to detect indoor return air temperature T1 of the air conditioner in real time; according to an operation mode of the air conditioner, calculating a difference between the indoor return air temperature T1 detected in real time and target temperature Ts; in a refrigeration mode, enabling Delta T=T1-TS, and in a heating mode, enabling Delta T=Ts-T1; judging when the Delta T is within a range of [Tb, Ta], controlling the opening of the electronic expansion valve to be correspondingly regulated within a preset range value [B, C] according to changes of the indoor return air temperature detected in real time. The invention further discloses an air conditioner control device. By the method and device, the problem that a compressor of a fixed frequency air conditioner starts and stops frequently is solved, stepless regulation of refrigerating capacity or heating capacity is solved, and temperature fluctuation of a room with a variable frequency air conditioner is reduced.
Description
Technical field
The present invention relates to the air-conditioner technical field, relate in particular to a kind of control method and device of air-conditioner.
Background technology
In prior art, frequency-conversion air-conditioning system due to used be frequency-changeable compressor, its control method is the relation according to environment temperature and design temperature, by changing the frequency of frequency-changeable compressor, realizes the control of temperature; The fixed frequency air conditioner system due to used be invariable frequency compressor, its control method is the relation according to environment temperature and design temperature, by startup-shutdown, realizes the control of temperature.
Air-conditioner with fixed frequency is compared transducer air conditioning following shortcoming aspect temperature control: because the invariable frequency compressor frequency is immutable, at the air-conditioner start initial stage, room intensification or cooling rate are slow; After room reaches design temperature, startup-shutdown often, causes room temperature fluctuation large, and user's comfort is poor, simultaneously because the high frequent start-stop affects compressor service life.
Although transducer air conditioning can change refrigerating capacity or heating capacity by regulating compressor frequency, in the low not situation of compressor low frequency, refrigerating capacity or heating capacity adjustable extent are wide not, still have the room temperature fluctuation.
Summary of the invention
Main purpose of the present invention is to provide a kind of control method and device of air-conditioner, is intended to improve the adjustment efficiency of air-conditioner.
The invention provides a kind of control method of air-conditioner, comprise the following steps:
When air-conditioner moves the first preset time, control electric expansion valve with aperture B operation, start to detect in real time the indoor return air temperature T1 of air-conditioner simultaneously;
According to the operational mode of air-conditioner, calculate and obtain the poor of the real-time indoor return air temperature T1 detected and target temperature Ts: △ T=T1-Ts under refrigeration mode, △ T=Ts-T1 under heating mode;
△ T is when [Tb, Ta] is interior in judgement, and according to the variation of the indoor return air temperature of described real-time detection, the aperture of control electric expansion valve is correspondingly adjusted in a preset range value [B, C].
Preferably, the aperture of described control electric expansion valve is correspondingly adjusted and is comprised in a preset range value [B, C]:
The aperture of controlling electric expansion valve is interior to preset the step-length increasing or decreasing in a preset range value [B, C].
Preferably, described default step-length is 3/ minute-10/ minute.
Preferably, described Ta is 1.5-3.0, and Tb is 0-1.0, and B is 200-480, and C is 400-180 or 100-150.
When preferably, the aperture of described control electric expansion valve is correspondingly adjusted in a preset range value [B, C], also comprise:
Under refrigeration mode, when the indoor return air temperature rising that judgement detects in real time and lasting the second preset time, stop the adjustment of electric expansion valve;
Under heating mode, when the indoor return air temperature decline that judgement detects in real time and lasting the 3rd preset time, stop the adjustment of electric expansion valve.
Preferably, also comprise when the described adjustment that stops electric expansion valve:
After the current aperture of electric expansion valve is added to a predetermined threshold value, as the aperture of electric expansion valve.
The embodiment of the present invention also provides a kind of control device of air-conditioner, and described control device comprises:
Temperature detecting module, for when air-conditioner moves the first preset time, control electric expansion valve with aperture B operation, starts to detect in real time the indoor return air temperature T1 of air-conditioner simultaneously;
The temperature computation module, for the operational mode according to air-conditioner, calculate and obtain the poor of the real-time indoor return air temperature T1 detected and target temperature Ts: △ T=T1-Ts under refrigeration mode, △ T=Ts-T1 under refrigeration mode;
Control module, △ T is when [Tb, Ta] is interior in judgement, and according to the variation of the indoor return air temperature of described real-time detection, the aperture of control electric expansion valve is correspondingly adjusted in a preset range value [B, C].
Preferably, described control module also for: the aperture of controlling electric expansion valve in a preset range value [B, C] to preset the step-length increasing or decreasing.
Preferably, described control module also for: under refrigeration mode, the indoor return air temperature that judgement detects in real time rises and while continuing the second preset time, stops the adjustment of electric expansion valve;
Under heating mode, when the indoor return air temperature decline that judgement detects in real time and lasting the 3rd preset time, stop the adjustment of electric expansion valve.
Preferably, described control module also for: after the current aperture of electric expansion valve is added to a predetermined threshold value, as the aperture of electric expansion valve.
Because the compressor frequency of air-conditioner with fixed frequency is immutable, therefore, when indoor return air temperature approaches target temperature soon, by the variation of electronic expansion valve opening, regulate refrigerating capacity or the heating capacity of air-conditioner, thereby solved the phenomenon of high frequent start-stop.The combination of the variation of the variation of transducer air conditioning by utilizing electronic expansion valve opening and compressor frequency, regulate refrigerating capacity or the heating capacity of air-conditioner, thereby realized the step-less adjustment of refrigerating capacity or heating capacity, reduces the fluctuation of transducer air conditioning room temperature.
The accompanying drawing explanation
Fig. 1 is the schematic flow sheet of control method first embodiment of air-conditioner of the present invention;
Fig. 2 is the schematic flow sheet of control method second embodiment of air-conditioner of the present invention;
Fig. 3 is the high-level schematic functional block diagram of the control device preferred embodiment of air-conditioner of the present invention.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Further illustrate technical scheme of the present invention below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
With reference to Fig. 1, control method one embodiment of a kind of air-conditioner of the present invention is proposed.The control method of this embodiment air-conditioner comprises the following steps:
Step S110, when air-conditioner moves the first preset time, control electric expansion valve with aperture B operation, detect in real time the indoor return air temperature T1 of air-conditioner simultaneously;
After starting air-conditioner, air-conditioner will be with the mode operation of respective settings, and the control model for example, during according to startup control the operational factor start operation that air-conditioner is corresponding in corresponding control model, and electric expansion valve moves with aperture A.In the present embodiment, this aperture A is 200-480, and being preferably under refrigeration mode is 300, under heating mode, is 350.Arranging of this aperture A will make air-conditioner maximize at the refrigerant circulation of start-up phase, for realizing fast-refrigerating or the condition that provides being provided fast.
After air-conditioner moves the first preset time N1, electric expansion valve, with aperture B operation, also will be detected to the indoor return air temperature T1 of air-conditioner simultaneously in real time.In the present embodiment, this first preset time N1 is 20-300s, is preferably N1=60s under refrigeration mode, N1=200s under heating mode; Aperture B is 200-480, is preferably B=250 under refrigeration mode, B=300 under heating mode.The setting of this first preset time N1 and aperture B is in order to make air-conditioner in temperature refrigerating capacity or heating capacity maximization during the adjusting stage, to realize fast-refrigerating or heat fast.Certainly; do not limit the value of the first preset time N1 and aperture B; as long as make at air-conditioner and move the first preset time N1, when the aperture of electric expansion valve is B, in temperature, the refrigerating capacity during adjusting stage or heating capacity maximize and fall within the scope of protection of the present invention air-conditioner.In the present embodiment, by the temperature-sensitive bag on indoor heat exchanger, indoor return air temperature T1 is detected.
Step S120, according to the operational mode of air-conditioner, calculate and obtain the poor of the indoor return air temperature T1 that detects in real time and target temperature Ts: △ T=T1-Ts under refrigeration mode, △ T=Ts-T1 under refrigeration mode;
In sensing chamber during return air temperature T1, will be according to the operational mode of air-conditioner, calculate and obtain the poor of the indoor return air temperature T1 that detects in real time and target temperature Ts: △ T=T1-Ts under refrigeration mode, △ T=Ts-T1 under refrigeration mode.
Step S130, judge that △ T whether in [Tb, Ta], is to proceed to step S140; Otherwise proceed to step S120.
Set in advance an interval value [Tb, Ta], in the present embodiment, this Ta is 0-1.0 ℃, and Tb is 1.5-3.0 ℃, is preferably Ta=1 ℃, Tb=2 ℃.After calculate obtaining △ T, judge whether △ T is positioned at [Tb, Ta] in.When not when [Tb, Ta] is interior, by controlling air-conditioner, continue the current aperture operation with electric expansion valve.
Step S140, according to the variation of the indoor return air temperature T1 of described real-time detection, control the aperture of electric expansion valve and correspondingly adjust in a preset range value [B, C].
When judgement △ T is positioned at [Tb, Ta] when interior, according to the variation of the indoor return air temperature T1 of detection in real time, controlling electric expansion valve correspondingly adjusts, be specially: when air-conditioner operates in heating mode lower time, if it is in rising trend that the indoor return air temperature T1 detected in real time continues, continue to adjust electric expansion valve, progressively reduce heating capacity; When air-conditioner operates in refrigeration mode lower time, on a declining curve if the indoor return air temperature T1 detected in real time continues, continue to adjust electric expansion valve, progressively reduce refrigerating capacity.In the present embodiment, B is 200-480.According to the system matches situation, the aperture of electric expansion valve is different from the corresponding relation that refrigerating capacity or heating capacity reduce.For example the aperture when electric expansion valve is larger, and refrigerating capacity is less, and C is 400-480; When the aperture of electric expansion valve is less, refrigerating capacity is less, and C is 100-150.
Further, the adjustment of above-mentioned electric expansion valve also comprises: the aperture of controlling electric expansion valve is interior to preset the step-length increasing or decreasing in a preset range value [B, C].As C > during B, the aperture of controlling electric expansion valve increases progressively between [B, C]; When C<B, control the aperture of electric expansion valve and successively decrease between [B, C].In the present embodiment, default step-length is 3/ minute-10/ minute, is preferably 5/ minute.Certainly, the adjustment of this electric expansion valve does not limit its above-mentioned default step-length form increasing or decreasing, for example, can also for previous stage growth rate faster etc. than the latter half growth rate.
Because the compressor frequency of air-conditioner with fixed frequency is immutable, therefore, when indoor return air temperature approaches target temperature soon, by the variation of electronic expansion valve opening, regulate refrigerating capacity or the heating capacity of air-conditioner, thereby solved the phenomenon of high frequent start-stop.The combination of the variation of the variation of transducer air conditioning by utilizing electronic expansion valve opening and compressor frequency, regulate refrigerating capacity or the heating capacity of air-conditioner, thereby realized the step-less adjustment of refrigerating capacity or heating capacity, reduces the fluctuation of transducer air conditioning room temperature.
Further, with reference to Fig. 2, control method second embodiment of air-conditioner of the present invention is proposed.Based on above-described embodiment, the present embodiment also comprises when the aperture of above-mentioned control electric expansion valve is correspondingly adjusted in a preset range value [B, C]:
Under step S150, refrigeration mode, when the indoor return air temperature rising that judgement detects in real time and lasting the second preset time, stop the adjustment of electric expansion valve; Under heating mode, when the indoor return air temperature decline that judgement detects in real time and lasting the 3rd preset time, stop the adjustment of electric expansion valve.This second preset time can equate with the value of the 3rd preset time, also can be unequal.In the present embodiment, the second preset time and the 3rd preset time are 1-5 minute, are preferably 2 minutes.
The present embodiment judges whether to stop the adjustment of electric expansion valve by the variation of the indoor return air temperature according to detecting in real time, stop in time the adjustment of electric expansion valve if need, thereby adjust exactly refrigerating capacity or heating capacity.
Further, in the adjustment that stops electric expansion valve of above-described embodiment, also comprise:
Step S160, the current aperture of electric expansion valve is added to a predetermined threshold value after, as the aperture of electric expansion valve.When electric expansion valve stops adjusting, return to normal refrigeration or heat state in order to guarantee electric expansion valve, can the aperture of electric expansion valve add a predetermined threshold value when stopping adjusting.
If C > B, predetermined threshold value is-20～-5, is preferably-10; If C<B, predetermined threshold value is 5-20, is preferably 10.
Below will be described in detail by the running under refrigeration mode and heating mode with air-conditioner with fixed frequency:
(1) under this refrigeration mode, the running of air-conditioner with fixed frequency is as follows:
A1, air-conditioner are pressed the condition start operations such as set model, design temperature, and electric expansion valve is with aperture 300 operations simultaneously;
When a2, air-conditioner 60s running time, start return air temperature T1 in real-time sensing chamber, electric expansion valve is with aperture 250 operations simultaneously;
A3, when 2>T1-Ts >=1, the electric expansion valve of controlling air-conditioner is adjusted between aperture scope 250～400,400 variations from aperture 250 to aperture, variable quantity is aperture 5/ minute;
A4, when adjusting expansion valve opening return air temperature T1 in real-time sensing chamber, under refrigeration mode, if the indoor return air temperature T1 detected continues to descend, continue to adjust expansion valve opening, if the indoor return air temperature T1 detected rises and continues 2 minutes, stop adjusting expansion valve opening, and move with current expansion valve opening-10.
A5, when indoor return air temperature reaches target temperature, the compressor of air-conditioner will quit work, until indoor return air temperature reaches turn-on temperature, restart, and repeating step a2, a3, a4 operation again.
(2) under heating mode, the running of air-conditioner with fixed frequency is as follows:
B1, air-conditioner are pressed the condition start operations such as set model, design temperature, and electric expansion valve is with aperture 350 operations simultaneously;
When b2, air-conditioner 200s running time, start return air temperature T1 in real-time sensing chamber, electric expansion valve is with aperture 300 operations simultaneously;
B3, when 2>Ts-T1 >=1, the electric expansion valve of air-conditioner is adjusted between aperture scope 300～400, from aperture 300 to aperture, 400 change, variable quantity is aperture 5/ minute;
B4, when adjusting expansion valve opening return air temperature T1 in real-time sensing chamber, under heating mode, when if the indoor return air temperature T1 detected continues to rise, continue to adjust expansion valve opening, if the indoor return air temperature T1 detected descends and continues 2 minutes, stop adjusting expansion valve opening, and move with current expansion valve opening-10.
B5, when indoor return air temperature reaches target temperature, the compressor of air-conditioner will quit work, until indoor return air temperature reaches turn-on temperature, restart, and repeating step b2, b3, b4 operation again.
From the running of above-mentioned air-conditioner with fixed frequency, because the frequency of air-conditioner with fixed frequency is immutable, thus when carrying out adjustment, can regulate refrigerating capacity and heating capacity by electric expansion valve, thus the phenomenon of high frequent start-stop solved.
Below also will be described in detail by the running under refrigeration mode and heating mode with transducer air conditioning:
(1) running of refrigeration mode down coversion air-conditioner is as follows:
C1, air-conditioner are pressed the condition start operations such as set model, design temperature, and electric expansion valve is with aperture 300 operations simultaneously;
When c2, air-conditioner 60s running time, start return air temperature T1 in real-time sensing chamber, electric expansion valve is with aperture 250 operations simultaneously;
C3, when 2>T1-Ts >=1, the electric expansion valve of controlling air-conditioner move between aperture scope 250～400,400 variations from aperture 250 to aperture, variable quantity is aperture 5/ minute;
C4, when adjusting electronic expansion valve opening return air temperature T1 in real-time sensing chamber, under refrigeration mode, the indoor return air temperature T1 detected continues to descend, can continue to adjust electronic expansion valve opening, if the indoor return air temperature T1 detected rises and continues 2 minutes, stop adjusting electronic expansion valve opening, move with current expansion valve opening-10.
(2) running of heating mode down coversion air-conditioner is as follows:
D1, air-conditioner are pressed the condition start operations such as set model, design temperature, and electric expansion valve is with aperture 350 operations simultaneously;
When d2, air-conditioner 200s running time, start return air temperature T1 in real-time sensing chamber, electric expansion valve is with aperture 300 operations simultaneously;
D3, when 2>Ts-T1 >=1, the electric expansion valve of controlling air-conditioner move between aperture scope 300～400,400 variations from aperture 300 to aperture, variable quantity is aperture 5/ minute;
D4, when adjusting electronic expansion valve opening return air temperature T1 in real-time sensing chamber, under heating mode, if the indoor return air temperature T1 detected continues to rise, continue to adjust the aperture of electric expansion valve, if the indoor return air temperature T1 detected descends and continues 2 minutes, stop adjusting the aperture of electric expansion valve, move with current electronic expansion valve opening-10.
Running from above-mentioned transducer air conditioning, when air-conditioner carries out adjustment, not only by frequency adjustment refrigerating capacity or the heating capacity of compressor, simultaneously also in conjunction with the adjusting of electric expansion valve, thereby realized the step-less adjustment of refrigerating capacity or heating capacity, reduce the temperature fluctuation in room, improved the adjustment efficiency of air-conditioner.
With reference to Fig. 3, control device first embodiment of a kind of air-conditioner of the present invention is proposed.The control device of the air-conditioner of this embodiment comprises:
After starting air-conditioner, air-conditioner will be with the mode operation of respective settings, and the control model for example, during according to startup control the operational factor start operation that air-conditioner is corresponding in corresponding control model, and electric expansion valve moves with aperture A.In the present embodiment, this aperture A is 200-480, and being preferably under refrigeration mode is 300, under heating mode, is 350.Arranging of this aperture A will make air-conditioner maximize at the refrigerant circulation of start-up phase, for realizing fast-refrigerating or the condition that provides being provided fast.
After air-conditioner moves the first preset time N1, electric expansion valve, with aperture B operation, also will be detected to the indoor return air temperature T1 of air-conditioner simultaneously in real time.In the present embodiment, this first preset time N1 is 20-300s, is preferably N1=60s under refrigeration mode, N1=200s under heating mode; Aperture B is 200-480, is preferably B=250 under refrigeration mode, B=300 under heating mode.The setting of this first preset time N1 and aperture B is in order to make air-conditioner in temperature refrigerating capacity or heating capacity maximization during the adjusting stage, to realize fast-refrigerating or heat fast.Certainly; do not limit the value of the first preset time N1 and aperture B; as long as make at air-conditioner and move the first preset time N1, when the aperture of electric expansion valve is B, in temperature, the refrigerating capacity during adjusting stage or heating capacity maximize and fall within the scope of protection of the present invention air-conditioner.In the present embodiment, by the temperature-sensitive bag on indoor heat exchanger, indoor return air temperature T1 is detected.
During return air temperature T1, the difference of this indoor return air temperature T1 and target temperature Ts is carried out to difference calculating, to obtain the temperature difference △ T=|T1-Ts| between indoor return air temperature T1 and target temperature Ts in sensing chamber.
Set in advance an interval value [Tb, Ta], in the present embodiment, this Ta is 0-1.0 ℃, and Tb is 1.5-3.0 ℃, is preferably Ta=1 ℃, Tb=2 ℃.After calculate obtaining △ T, judge whether △ T is positioned at [Tb, Ta] in.When not when [Tb, Ta] is interior, by controlling air-conditioner, continue the current aperture operation with electric expansion valve.
When judgement △ T is positioned at [Tb, Ta] when interior, according to the variation of the indoor return air temperature T1 of detection in real time, controlling electric expansion valve correspondingly adjusts, be specially: when air-conditioner operates in heating mode lower time, if it is in rising trend that the indoor return air temperature T1 detected in real time continues, continue to adjust electric expansion valve, progressively reduce heating capacity; When air-conditioner operates in refrigeration mode lower time, on a declining curve if the indoor return air temperature T1 detected in real time continues, continue to adjust electric expansion valve, progressively reduce refrigerating capacity.In the present embodiment, B is 200-480.According to the system matches situation, the aperture of electric expansion valve is different from the corresponding relation that refrigerating capacity or heating capacity reduce.For example, when the aperture of electric expansion valve is larger, refrigerating capacity is less, and C is 400-480; When the aperture of electric expansion valve is less, refrigerating capacity is less, and C is 100-150.
Further, described control module 130 also for: the aperture of controlling electric expansion valve in a preset range value [B, C] to preset the step-length increasing or decreasing.
Particularly, as C > during B, the aperture of controlling electric expansion valve increases progressively between [B, C]; When C<B, control the aperture of electric expansion valve and successively decrease between [B, C].In the present embodiment, default step-length is 3/ minute-10/ minute.Certainly, the adjustment of this electric expansion valve does not limit its above-mentioned default step-length form increasing or decreasing, for example, can also for previous stage growth rate faster etc. than the latter half growth rate.
Because the compressor frequency of air-conditioner with fixed frequency is immutable, therefore, when indoor return air temperature approaches target temperature soon, by the variation of electronic expansion valve opening, regulate refrigerating capacity or the heating capacity of air-conditioner, thereby solved the phenomenon of high frequent start-stop.The combination of the variation of the variation of transducer air conditioning by utilizing electronic expansion valve opening and compressor frequency, regulate refrigerating capacity or the heating capacity of air-conditioner, thereby realized the step-less adjustment of refrigerating capacity or heating capacity, reduces the fluctuation of transducer air conditioning room temperature.
Further, described control module 130 also for: under refrigeration mode, the indoor return air temperature that judgement detects in real time rises and while continuing the second preset time, stops the adjustment of electric expansion valve; Under heating mode, when the indoor return air temperature decline that judgement detects in real time and lasting the 3rd preset time, stop the adjustment of electric expansion valve.This second preset time can equate with the value of the 3rd preset time, also can be unequal.In the present embodiment, the second preset time and the 3rd preset time are 1-5 minute, are preferably 2 minutes.
The present embodiment judges whether to stop the adjustment of electric expansion valve by the variation of the indoor return air temperature according to detecting in real time, stop in time the adjustment of electric expansion valve if need, thereby adjust exactly refrigerating capacity or heating capacity.
Further, described control module 130 also for: after the current aperture of electric expansion valve is added to a predetermined threshold value, as the aperture of electric expansion valve.If C > B, predetermined threshold value is-20～-5, is preferably-10; If C<B, predetermined threshold value is 5-20, is preferably 10.When electric expansion valve stops adjusting, return to normal refrigeration or heat state in order to guarantee electric expansion valve, can the aperture of electric expansion valve add a predetermined threshold value when stopping adjusting.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add essential general hardware platform by software and realize, can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprise that some instructions are with so that a station terminal equipment (can be mobile phone, computer, server, or the network equipment etc.) the described method of execution each embodiment of the present invention.
The foregoing is only the preferred embodiments of the present invention; not thereby limit its scope of the claims; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (10)
1. the control method of an air-conditioner, is characterized in that, comprises the following steps:
When air-conditioner moves the first preset time, control electric expansion valve with aperture B operation, start to detect in real time the indoor return air temperature T1 of air-conditioner simultaneously;
According to the operational mode of air-conditioner, calculate and obtain the poor of the real-time indoor return air temperature T1 detected and target temperature Ts: △ T=T1-Ts under refrigeration mode, △ T=Ts-T1 under heating mode;
△ T is when [Tb, Ta] is interior in judgement, and according to the variation of the indoor return air temperature of described real-time detection, the aperture of control electric expansion valve is correspondingly adjusted in a preset range value [B, C].
2. the control method of air-conditioner according to claim 1, is characterized in that, the aperture of described control electric expansion valve is correspondingly adjusted and comprised in a preset range value [B, C]:
The aperture of controlling electric expansion valve is interior to preset the step-length increasing or decreasing in a preset range value [B, C].
3. the control method of air-conditioner according to claim 2, is characterized in that, described default step-length is 3/ minute-10/ minute.
4. the control method of air-conditioner according to claim 1, is characterized in that, described Ta is 1.5-3.0, and Tb is 0-1.0, and B is 200-480, and C is 400-180 or 100-150.
5. according to the control method of the described air-conditioner of claim 1-4 any one, it is characterized in that, the aperture of described control electric expansion valve also comprises when correspondingly adjusting in a preset range value [B, C]:
Under refrigeration mode, when the indoor return air temperature rising that judgement detects in real time and lasting the second preset time, stop the adjustment of electric expansion valve;
Under heating mode, when the indoor return air temperature decline that judgement detects in real time and lasting the 3rd preset time, stop the adjustment of electric expansion valve.
6. the control method of air-conditioner according to claim 5, is characterized in that, in the time of the described adjustment that stops electric expansion valve, also comprises:
After the current aperture of electric expansion valve is added to a predetermined threshold value, as the aperture of electric expansion valve.
7. the control device of an air-conditioner, is characterized in that, described control device comprises:
Temperature detecting module, for when air-conditioner moves the first preset time, control electric expansion valve with aperture B operation, starts to detect in real time the indoor return air temperature T1 of air-conditioner simultaneously;
The temperature computation module, for the operational mode according to air-conditioner, calculate and obtain the poor of the real-time indoor return air temperature T1 detected and target temperature Ts: △ T=T1-Ts under refrigeration mode, △ T=Ts-T1 under refrigeration mode;
Control module, △ T is when [Tb, Ta] is interior in judgement, and according to the variation of the indoor return air temperature of described real-time detection, the aperture of control electric expansion valve is correspondingly adjusted in a preset range value [B, C].
8. the control device of air-conditioner according to claim 7, is characterized in that, described control module also for: the aperture of controlling electric expansion valve in a preset range value [B, C] to preset the step-length increasing or decreasing.
9. the control device of air-conditioner according to claim 7, is characterized in that, described control module also for: under refrigeration mode, the indoor return air temperature that judgement detects in real time rises and while continuing the second preset time, stops the adjustment of electric expansion valve;
Under heating mode, when the indoor return air temperature decline that judgement detects in real time and lasting the 3rd preset time, stop the adjustment of electric expansion valve.
10. the control device of air-conditioner according to claim 9, is characterized in that, described control module also for: after the current aperture of electric expansion valve is added to a predetermined threshold value, as the aperture of electric expansion valve.
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| CN107676939A (en) * | 2017-10-27 | 2018-02-09 | 广东志高暖通设备股份有限公司 | A kind of control method of fixed frequency air conditioner, control system and control device |
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| CN110398082A (en) * | 2018-04-25 | 2019-11-01 | 杭州三花研究院有限公司 | Heat management system and its control method |
| CN109520188A (en) * | 2018-11-22 | 2019-03-26 | 广东美的制冷设备有限公司 | Refrigerating plant control method, refrigerating plant and storage medium |
| CN109520188B (en) * | 2018-11-22 | 2021-09-14 | 广东美的制冷设备有限公司 | Refrigeration device control method, refrigeration device, and storage medium |
| CN109291947A (en) * | 2018-12-26 | 2019-02-01 | 新誉轨道交通科技有限公司 | A kind of control method of refrigeration system, device, equipment and readable storage medium storing program for executing |
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| CN112665250A (en) * | 2020-12-28 | 2021-04-16 | 江苏拓米洛环境试验设备有限公司 | Temperature control method and system |
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