CN105091204A - Control method of multi-split system - Google Patents
Control method of multi-split system Download PDFInfo
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- CN105091204A CN105091204A CN201410214901.0A CN201410214901A CN105091204A CN 105091204 A CN105091204 A CN 105091204A CN 201410214901 A CN201410214901 A CN 201410214901A CN 105091204 A CN105091204 A CN 105091204A
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Abstract
The invention discloses a control method of a multi-split system. The method includes the following steps that S1, the indoor environment temperature T1 and the corresponding user set temperature Ts of each indoor unit are detected; S2, the difference value delta T between the indoor environment temperature T1 and the user set temperature Ts of each indoor unit is calculated; S3, the difference value delta T of each indoor unit is compared with the reference value, meanwhile the operation mode of each indoor unit is detected, and the opening of a corresponding flow rate regulating device is adjusted according to the comparison result in the corresponding operation mode. The control method of the multi-split system can meet different refrigerant amount requirements caused by different indoor environment temperatures T1 and user set temperatures Ts of different indoor units, meanwhile the indoor environment temperatures T1 and the user set temperatures Ts are directly used as calculation factors to calculate the opening of the flow rate regulation device, and it is guaranteed that refrigerant is distributed more accurately and reasonably.
Description
Technical field
The present invention relates to refrigerating field, especially relate to a kind of control method of multiple on-line system.
Background technology
Multiple on-line system in correlation technique, refrigerant distribution between each interior machine is controlled by interior organic electronic expansion valve, electronic expansion valve opening in different between machine contrasts each interior machine evaporator tube temperature by control unit and regulates, for process of refrigerastion, the electronic expansion valve opening of machine in Guan Wengao is opened the more refrigerants of ambassador and flow through this evaporimeter to increase evaporation capacity, the electronic expansion valve opening of machine in low for pipe temperature is reduced to reduce evaporation capacity.The final goal regulated is tending towards identical for making each interior machine evaporator tube temperature.
But there is following two problems in the method for adjustment of correlation technique: a problem is when there being multiple interior machine to work simultaneously, when some user rooms design temperature differs more with actual temperature, be not enough to provide abundant refrigerant to make this room temperature reach design temperature rapidly, even if compressor of outdoor unit runs high-frequency to provide more refrigerant circulations, additional refrigerant circulation is not provided in this indoor set completely.
If another problem be the design temperature in some user rooms and room actual temperature comparatively close to time, the method for adjustment in correlation technique can make room temperature reach design temperature rapidly, and electric expansion valve is closed, and refrigerant no longer flows through this interior machine; After room temperature rises, electric expansion valve is opened, and room temperature declines rapidly again, and this just causes the temperature fluctuation in this user room larger; Meanwhile, sleeping for relaxing under this special pattern, because Guan Wen is lower, having larger moisture removal.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the control method proposing a kind of multiple on-line system, can meet the different coolant quantity demands that different indoor set causes due to different indoor environment temperature T1, user's design temperature Ts.
According to the control method of the multiple on-line system of the embodiment of the present invention, described multiple on-line system comprises off-premises station and multiple indoor set, each indoor set comprises flow regulator, and described control method comprises the steps: S1: detect the indoor environment temperature T1 residing for each indoor set and corresponding user's design temperature Ts; S2: calculate the difference DELTA T between the indoor environment temperature T1 of each indoor set and user's design temperature Ts; S3: the difference DELTA T of each indoor set and a reference value are compared, detects the operational mode of each indoor set simultaneously, adjusts the aperture of corresponding flow regulator in corresponding operational mode according to comparative result.
According to the control method of the multiple on-line system of the embodiment of the present invention, by detecting indoor environment temperature T1 residing for each indoor set and corresponding user's design temperature Ts and calculating difference DELTA T, compare difference DELTA T and a reference value to judge that the refrigeration whether flow of refrigerant meets indoor set requires or heats requirement simultaneously, thus by detecting T1, Ts also adjusts the aperture of flow regulator by the mode calculated, different indoor set can be met due to different indoor environment temperature T1, the different coolant quantity demands that user's design temperature Ts causes, simultaneously direct by indoor environment temperature T1, user's design temperature Ts is as the aperture calculating factor calculated flow rate adjusting device, ensure that refrigerant distributes more accurately rationally.
In addition, the control method of multiple on-line system according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, by calculating the mean value T of the difference DELTA T of multiple indoor set
on averageto obtain described a reference value.
In other embodiments of the present invention, in step s3, first the difference DELTA T of each indoor set and reinforcement radix are multiplied by the multiple obtaining described difference DELTA T mutually, then by calculating the mean value of the multiple of the difference DELTA T of each indoor set to obtain described a reference value.
Particularly, the reinforcement radix taken advantage of of the difference DELTA T-phase of each described indoor set is all different.
According to specific embodiments more of the present invention, described step S3 comprises following sub-step:
S31: by the difference DELTA T of each indoor set and mean value T
on averagecompare to obtain difference;
S32: the operational mode detecting each indoor set;
S33: when indoor set is in refrigeration mode, if difference DELTA T and mean value T
on averagebetween difference be greater than 0, then increase the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween difference be less than 0, then reduce the aperture of corresponding flow regulator;
When indoor set is in heating mode, if difference DELTA T and mean value T
on averagebetween difference be greater than 0, then reduce the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween difference be less than 0, then increase the aperture of corresponding flow regulator.
According to other specific embodiments of the present invention, described step S3 comprises following sub-step:
S31: by the difference DELTA T of each indoor set and mean value T
on averagecompare to obtain ratio;
S32: the operational mode detecting each indoor set;
S33: when indoor set is in refrigeration mode, if difference DELTA T and mean value T
on averagebetween ratio be greater than 1, then increase the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween ratio be less than 1, then reduce the aperture of corresponding flow regulator;
When indoor set is in heating mode, if difference DELTA T and mean value T
on averagebetween ratio be greater than 1, then reduce the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween ratio be less than 1, then increase the aperture of corresponding flow regulator.
Particularly, corresponding described indoor environment temperature is detected by the ambient temperature detection device be located in the housing of each described indoor set.
Preferably, described ambient temperature detection device is temperature sensor.
Particularly, described flow regulator is electric expansion valve.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of multiple on-line system according to the embodiment of the present invention.
Fig. 2 is the flow chart of the control method of multiple on-line system according to the specific embodiment of the invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Below with reference to Fig. 1 and Fig. 2, the control method according to the multiple on-line system of the embodiment of the present invention is described.Wherein multiple on-line system comprises off-premises station and multiple indoor set, and each indoor set comprises flow regulator and indoor heat exchanger, and flow regulator is connected to regulate the coolant quantity entering into indoor heat exchanger with indoor heat exchanger.In concrete example of the present invention, flow regulator is electric expansion valve, and now electric expansion valve not only plays the effect of adjust flux, and electric expansion valve also can play the effect of reducing pressure by regulating flow.
Each indoor set comprises the electric-controlled box being provided with controller simultaneously, each indoor set comprises remote controller and/or control panel, user can set corresponding temperature by remote controller and/or control panel and run to control corresponding indoor set, namely now each indoor set can have user's design temperature, and the controller in the electric-controlled box of each indoor set can read user's design temperature of corresponding indoor set.
What be certainly worth understanding is, each indoor set comprises refrigeration mode and heating mode, user can also set the operational mode of corresponding indoor set by remote controller and/or control panel, when user sets operational mode, the controller in the electric-controlled box of each indoor set can read the operational mode of corresponding indoor set.Wherein it should be noted that, when each indoor set is in refrigeration mode or heating mode, the flow process etc. of the refrigerant between each indoor set and off-premises station is prior art, is just not described in detail here.
As shown in Figure 1, according to the control method of the multiple on-line system of the embodiment of the present invention, comprise the steps:
S1: detect the indoor environment temperature T1 residing for each indoor set and corresponding user's design temperature Ts, now detect corresponding user's design temperature Ts, refers to controller and reads user's design temperature Ts.In concrete example of the present invention, detect corresponding indoor environment temperature by the ambient temperature detection device be located in the housing of each indoor set.Preferably, ambient temperature detection device is temperature sensor.This Time Controller is connected with ambient temperature detection device, and ambient temperature detection device detects indoor environment temperature T1, the indoor environment temperature T1 that controller reception environment temperature-detecting device detects.
S2: calculate the difference DELTA T between the indoor environment temperature T1 of each indoor set and user's design temperature Ts, i.e. difference DELTA T=T1-Ts.
S3: the difference DELTA T of each indoor set and a reference value are compared, detects the operational mode of each indoor set simultaneously, adjusts the aperture of corresponding flow regulator in corresponding operational mode according to comparative result.Need to be described, in concrete example of the present invention, the operational mode detecting each indoor set refers to the operational mode that controller reads each indoor set.Certainly be worth understanding, other any modes can be taked to detect the operational mode of each indoor set.
Wherein, a reference value can adopt various ways to obtain, such as can by calculating the mean value T of the difference DELTA T of multiple indoor set
on averageto obtain a reference value; Can also be by first the difference DELTA T of each indoor set and reinforcement radix being multiplied by the multiple obtaining difference DELTA T mutually, then by calculating the mean value of multiple of the difference DELTA T of each indoor set to obtain a reference value, now the reinforcement radix taken advantage of of the difference DELTA T-phase of each indoor set is all different.
Or can also be the Guan Wen of the indoor heat exchanger by detecting each indoor set to obtain a reference value of each indoor set, namely now a reference value of each indoor set is the Guan Wen of the indoor heat exchanger of the corresponding indoor set detected.Certainly be worth understanding, a reference value can also be the predetermined value that operating personnel set in advance in the controller, or a reference value can also be the predetermined value that user is set by control panel and/or remote controller.
Wherein, adjust the aperture of corresponding flow regulator according to comparative result in corresponding operational mode, refer to and judge whether the cold medium flux entered in indoor set meets the refrigeration of indoor set or heat requirement according to comparative result, in cooling mode, when the refrigeration that the cold medium flux judging to enter into indoor set exceeds indoor set requires, now reduce the aperture of flow regulator to reduce the flow of refrigerant, in cooling mode, when the refrigeration that the cold medium flux judging to enter into indoor set does not meet indoor set requires, now the aperture of augmented flow adjusting device is to increase the flow of refrigerant.
In a heating mode, when judge the cold medium flux entering into indoor set exceed indoor set heat require time, now reduce the aperture of flow regulator to reduce the flow of refrigerant, in a heating mode, when judge the cold medium flux entering into indoor set do not meet indoor set heat require time, now the aperture of augmented flow adjusting device is to increase the flow of refrigerant.
Wherein it should be noted that, in control method of the present invention, any manner of comparison can be adopted to judge whether the flow of refrigerant meets the refrigeration requirement of indoor set or heat requirement.
According to the control method of the multiple on-line system of the embodiment of the present invention, by detecting indoor environment temperature T1 residing for each indoor set and corresponding user's design temperature Ts and calculating difference DELTA T, compare difference DELTA T and a reference value to judge that the refrigeration whether flow of refrigerant meets indoor set requires or heats requirement simultaneously, thus by detecting T1, Ts also adjusts the aperture of flow regulator by the mode calculated, different indoor set can be met due to different indoor environment temperature T1, the different coolant quantity demands that user's design temperature Ts causes, simultaneously direct by indoor environment temperature T1, user's design temperature Ts is as the aperture calculating factor calculated flow rate adjusting device, ensure that refrigerant distributes more accurately rationally.
As the mean value T of the difference DELTA T by calculating multiple indoor set
on averageduring to obtain a reference value, now in some embodiments of the invention, step S3 comprises following sub-step:
S31: by the difference DELTA T of each indoor set and mean value T
on averagecompare to obtain difference;
S32: the operational mode detecting each indoor set;
S33: when indoor set is in refrigeration mode, if difference DELTA T and mean value T
on averagebetween difference be greater than 0, then increase the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween difference be less than 0, then reduce the aperture of corresponding flow regulator;
When indoor set is in heating mode, if difference DELTA T and mean value T
on averagebetween difference be greater than 0, then reduce the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween difference be less than 0, then increase the aperture of corresponding flow regulator.
As the mean value T of the difference DELTA T by calculating multiple indoor set
on averageduring to obtain a reference value, now in other embodiments of the present invention, step S3 comprises following sub-step:
S31: by the difference DELTA T of each indoor set and mean value T
on averagecompare to obtain ratio;
S32: the operational mode detecting each indoor set;
S33: when indoor set is in refrigeration mode, if difference DELTA T and mean value T
on averagebetween ratio be greater than 1, then increase the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween ratio be less than 1, then reduce the aperture of corresponding flow regulator;
When indoor set is in heating mode, if difference DELTA T and mean value T
on averagebetween ratio be greater than 1, then reduce the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween ratio be less than 1, then increase the aperture of corresponding flow regulator.
Below with reference to Fig. 2, the control method according to the multiple on-line system of the present invention's specific embodiment is described.
First, detect all start run indoor set residing for indoor environment temperature T1 and user's design temperature Ts.
Then the difference DELTA T of every platform indoor set (indoor environment temperature T1-user design temperature Ts) is calculated, and the T that averages
on average, then (indoor environment temperature T1-user design temperature Ts) and this mean value T of machine in every platform
on averagecontrast, judge this electronic expansion valve of indoor unit target aperture.
Then the operational mode of indoor set is judged.
For refrigerating operaton, when the difference of [(indoor environment temperature T1-user design temperature Ts)-mean value] is greater than 0, then the corresponding increase of the aperture of this indoor set, the larger aperture of difference is larger; When this difference is less than 0, then the corresponding reduction of aperture, the less then aperture of difference is less.For heating operation, when the difference of [(indoor environment temperature T1-user design temperature Ts)-mean value] is greater than 0, then the corresponding reduction of the aperture of this interior machine, the larger aperture of difference is less; When this difference is less than 0, then the corresponding increase of aperture, the less then aperture of difference is larger.
Particularly,
For in refrigeration mode, target aperture=current aperture+f × each adjusted basis of electric expansion valve, for heating mode, target aperture=current aperture-f × each adjusted basis of electric expansion valve.Wherein regulate radix to refer to the adjustment radix of electric expansion valve at every turn.
According to the control method of the multiple on-line system of the embodiment of the present invention, the different coolant quantity demands that different indoor set causes due to different indoor environment temperature T1, user's design temperature Ts can be met, ensure that refrigerant distributes more accurately rationally, simultaneously when indoor environment temperature T1 and user's design temperature Ts comparatively close to time, when indoor environment temperature reaches user's design temperature, electronic expansion valve of indoor unit can maintain a small guide vane, this indoor environment temperature can be made to fluctuate and to be in a scope be comparatively suitable for, improve user's comfort.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. a control method for multiple on-line system, described multiple on-line system comprises off-premises station and multiple indoor set, and each indoor set comprises flow regulator, it is characterized in that, described control method comprises the steps:
S1: detect the indoor environment temperature T1 residing for each indoor set and corresponding user's design temperature Ts;
S2: calculate the difference DELTA T between the indoor environment temperature T1 of each indoor set and user's design temperature Ts;
S3: the difference DELTA T of each indoor set and a reference value are compared, detects the operational mode of each indoor set simultaneously, adjusts the aperture of corresponding flow regulator in corresponding operational mode according to comparative result.
2. the control method of multiple on-line system according to claim 1, is characterized in that, by calculating the mean value T of the difference DELTA T of multiple indoor set
on averageto obtain described a reference value.
3. the control method of multiple on-line system according to claim 1, it is characterized in that, in step s3, first the difference DELTA T of each indoor set and reinforcement radix are multiplied by the multiple obtaining described difference DELTA T mutually, then by calculating the mean value of the multiple of the difference DELTA T of each indoor set to obtain described a reference value.
4. the control method of multiple on-line system according to claim 3, is characterized in that, the reinforcement radix that the difference DELTA T-phase of each described indoor set is taken advantage of is all different.
5. the control method of multiple on-line system according to claim 2, is characterized in that, described step S3 comprises following sub-step:
S31: by the difference DELTA T of each indoor set and mean value T
on averagecompare to obtain difference;
S32: the operational mode detecting each indoor set;
S33: when indoor set is in refrigeration mode, if difference DELTA T and mean value T
on averagebetween difference be greater than 0, then increase the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween difference be less than 0, then reduce the aperture of corresponding flow regulator;
When indoor set is in heating mode, if difference DELTA T and mean value T
on averagebetween difference be greater than 0, then reduce the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween difference be less than 0, then increase the aperture of corresponding flow regulator.
6. the control method of multiple on-line system according to claim 2, is characterized in that, described step S3 comprises following sub-step:
S31: by the difference DELTA T of each indoor set and mean value T
on averagecompare to obtain ratio;
S32: the operational mode detecting each indoor set;
S33: when indoor set is in refrigeration mode, if difference DELTA T and mean value T
on averagebetween ratio be greater than 1, then increase the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween ratio be less than 1, then reduce the aperture of corresponding flow regulator;
When indoor set is in heating mode, if difference DELTA T and mean value T
on averagebetween ratio be greater than 1, then reduce the aperture of corresponding flow regulator, if difference DELTA T and mean value T
on averagebetween ratio be less than 1, then increase the aperture of corresponding flow regulator.
7. the control method of multiple on-line system according to claim 1, is characterized in that, detects corresponding described indoor environment temperature by the ambient temperature detection device be located in the housing of each described indoor set.
8. the control method of multiple on-line system according to claim 7, is characterized in that, described ambient temperature detection device is temperature sensor.
9. the control method of multiple on-line system according to claim 1, is characterized in that, described flow regulator is electric expansion valve.
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