CN105091204B - The control method of multi-line system - Google Patents
The control method of multi-line system Download PDFInfo
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- CN105091204B CN105091204B CN201410214901.0A CN201410214901A CN105091204B CN 105091204 B CN105091204 B CN 105091204B CN 201410214901 A CN201410214901 A CN 201410214901A CN 105091204 B CN105091204 B CN 105091204B
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Abstract
The invention discloses a kind of control methods of multi-line system, include the following steps: S1: detecting indoor environment temperature T1 locating for each indoor unit and corresponding user's set temperature Ts；S2: the difference DELTA T between the indoor environment temperature T1 of each indoor unit and user's set temperature Ts is calculated；S3: the difference DELTA T of each indoor unit is compared with a reference value, while detecting the operational mode of each indoor unit, adjusts the aperture of corresponding flow regulator according to comparison result in corresponding operational mode.The control method of multi-line system according to an embodiment of the present invention, different indoor units difference coolant quantity demand as caused by different indoor environment temperature T1, user's set temperature Ts can be met, simultaneously directly using indoor environment temperature T1, user's set temperature Ts as the aperture for calculating factor calculating flow regulator, it ensure that refrigerant distributes more accurate reasonable.
Description
Technical field
The present invention relates to refrigerating fields, more particularly, to a kind of control method of multi-line system.
Background technique
Multi-line system in the related technology, the refrigerant distribution between each interior machine are different by interior machine electronic expansion valve controls
Electronic expansion valve opening between interior machine compares each interior machine evaporator tube temperature by control unit and is adjusted, for process of refrigerastion
Speech, opens the more refrigerants of ambassador for the electronic expansion valve opening of the high interior machine of tube temperature and flows through the evaporator to increase evaporation capacity, will manage
The electronic expansion valve opening of the low interior machine of temperature reduces to reduce evaporation capacity.The final goal of adjusting is to make each interior machine evaporator tube temperature
Tend to be identical.
But the method for adjustment of the relevant technologies has that following two: one problems are that having multiple interior machines to work at the same time
When, when some user room, set temperature differs more with actual temperature, being not enough to provide enough refrigerants makes the room
Between temperature be rapidly reached set temperature, even if compressor of outdoor unit run high-frequency to provide more refrigerant circulations, have more come
Refrigerant circulation without completely provide into the indoor unit.
If another problem is the set temperature in some user room and when room actual temperature is closer to, the relevant technologies
In method of adjustment room temperature can be made to be rapidly reached set temperature, electric expansion valve is closed, and refrigerant is no longer flow through the interior machine；Room
Between after temperature rises, electric expansion valve is opened, and room temperature declines rapidly again, this results in the temperature fluctuation in the user room
It is larger；Meanwhile being slept under this special pattern for relaxing, since tube temperature is lower, have biggish moisture removal.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of control method of multi-line system, can meet different indoor units due to different indoor environment temperatures
Difference coolant quantity demand caused by T1, user's set temperature Ts.
The control method of multi-line system according to an embodiment of the present invention, the multi-line system include outdoor unit and multiple
Indoor unit, each indoor unit include flow regulator, and the control method includes the following steps: S1: detecting each indoor unit
Locating indoor environment temperature T1 and corresponding user's set temperature Ts；S2: the indoor environment temperature T1 of each indoor unit is calculated
Difference DELTA T between user's set temperature Ts；S3: the difference DELTA T of each indoor unit is compared with a reference value, is examined simultaneously
The operational mode for surveying each indoor unit adjusts corresponding flow regulator according to comparison result in corresponding operational mode
Aperture.
The control method of multi-line system according to an embodiment of the present invention, by detecting indoor ring locating for each indoor unit
Simultaneously difference DELTA T is calculated in border temperature T1 and corresponding user's set temperature Ts, while difference DELTA T being compared with a reference value
To judge whether the flow of refrigerant meets the refrigeration requirement of indoor unit or heating requires, to by detection T1, Ts and pass through meter
The mode of calculation adjusts the aperture of flow regulator, can meet different indoor units due to different indoor environment temperature T1, Yong Hushe
Determine difference coolant quantity demand caused by temperature Ts, while directly using indoor environment temperature T1, user's set temperature Ts as calculating
Factor calculates the aperture of flow regulator, ensure that refrigerant distributes more accurate reasonable.
In addition, the control method of multi-line system according to the above embodiment of the present invention can also have following additional skill
Art feature:
In some embodiments of the invention, pass through the average value T of the difference DELTA T of the multiple indoor units of calculatingIt is averageTo obtain
State a reference value.
In other embodiments of the invention, in step s3, first by the difference DELTA T of each indoor unit and reinforcement radix
It is multiplied to obtain the multiple of the difference DELTA T, then by the average value of the multiple of the difference DELTA T of each indoor unit of calculating to obtain
To a reference value.
Specifically, the reinforcement radix that the difference DELTA T-phase of each indoor unit multiplies is different.
Some specific embodiments according to the present invention, the step S3 includes following sub-step:
S31: by the difference DELTA T of each indoor unit and average value TIt is averageIt is compared to obtain difference；
S32: the operational mode of each indoor unit is detected；
S33: when indoor unit is in refrigeration mode, if difference DELTA T and average value TIt is averageBetween difference be greater than 0, then increase
The aperture of corresponding flow regulator, if difference DELTA T and average value TIt is averageBetween difference less than 0, then reduce corresponding flow
The aperture of regulating device；
When indoor unit is in heating mode, if difference DELTA T and average value TIt is averageBetween difference be greater than 0, then reduce corresponding
Flow regulator aperture, if difference DELTA T and average value TIt is averageBetween difference less than 0, then increase corresponding flow and adjust
The aperture of device.
Other specific embodiments according to the present invention, the step S3 includes following sub-step:
S31: by the difference DELTA T of each indoor unit and average value TIt is averageIt is compared to obtain ratio；
S32: the operational mode of each indoor unit is detected；
S33: when indoor unit is in refrigeration mode, if difference DELTA T and average value TIt is averageBetween ratio be greater than 1, then increase
The aperture of corresponding flow regulator, if difference DELTA T and average value TIt is averageBetween ratio less than 1, then reduce corresponding flow
The aperture of regulating device；
When indoor unit is in heating mode, if difference DELTA T and average value TIt is averageBetween ratio be greater than 1, then reduce corresponding
Flow regulator aperture, if difference DELTA T and average value TIt is averageBetween ratio less than 1, then increase corresponding flow and adjust
The aperture of device.
Specifically, corresponding described by being located at the intracorporal ambient temperature detection device detection of shell of each indoor unit
Indoor environment temperature.
Preferably, the ambient temperature detection device is temperature sensor.
Specifically, the flow regulator is electric expansion valve.
Detailed description of the invention
Fig. 1 is the flow chart according to the control method of the multi-line system of the embodiment of the present invention.
Fig. 2 is the flow chart according to the control method of the multi-line system of the specific embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
The control method of multi-line system according to an embodiment of the present invention is described below with reference to Fig. 1 and Fig. 2.Wherein multi-connected machine
System includes outdoor unit and multiple indoor units, and each indoor unit includes flow regulator and indoor heat exchanger, and flow adjusts dress
It sets and is connected with indoor heat exchanger to adjust the coolant quantity entered in indoor heat exchanger.In specific example of the invention, flow
Regulating device is electric expansion valve, and electric expansion valve not only acts as the effect for adjusting flow at this time, and electric expansion valve may also function as
The effect of reducing pressure by regulating flow.
Each indoor unit includes the electric-controlled box equipped with controller simultaneously, and each indoor unit includes remote controler and/or control plane
Plate, user can set corresponding temperature by remote controler and/or control panel and be run with controlling corresponding indoor unit, i.e., at this time
Each indoor unit can have user's set temperature, and corresponding indoor unit can be read in the controller in the electric-controlled box of each indoor unit
User's set temperature.
Certainly it is worth understanding, each indoor unit includes refrigeration mode and heating mode, and user can also pass through remote control
Device and/or control panel set the operational mode of corresponding indoor unit, when user sets operational mode, the electricity of each indoor unit
The operational mode of corresponding indoor unit can be read in controller in control box.Wherein it should be noted that when each indoor unit is in
When refrigeration mode or heating mode, the flow process etc. of the refrigerant between each indoor unit and outdoor unit is the prior art, this
In be just not described in detail.
As shown in Figure 1, the control method of multi-line system according to an embodiment of the present invention, includes the following steps:
S1: indoor environment temperature T1 locating for each indoor unit and corresponding user's set temperature Ts are detected, is detected at this time
Corresponding user set temperature Ts refers to that controller reads user's set temperature Ts.In specific example of the invention, pass through
The intracorporal ambient temperature detection device of shell for being located at each indoor unit detects corresponding indoor environment temperature.Preferably, environment temperature
Degree detection device is temperature sensor.Controller is connected with ambient temperature detection device at this time, ambient temperature detection device detection
Indoor environment temperature T1, controller receive the indoor environment temperature T1 that ambient temperature detection device detects.
S2: the difference DELTA T between the indoor environment temperature T1 of each indoor unit and user's set temperature Ts, i.e. difference are calculated
Δ T=T1-Ts.
S3: the difference DELTA T of each indoor unit is compared with a reference value, while detecting the operation mould of each indoor unit
Formula adjusts the aperture of corresponding flow regulator in corresponding operational mode according to comparison result.It needs to be illustrated
It is that in specific example of the invention, the operational mode for detecting each indoor unit refers to that controller reads each indoor unit
Operational mode.Certainly it is worth understanding, other any modes can be taken to detect the operational mode of each indoor unit.
Wherein, a reference value can be used various ways and obtain, such as can pass through the flat of the difference DELTA T of the multiple indoor units of calculating
Mean value TIt is averageTo obtain a reference value；It can also be by first being multiplied to the difference DELTA T of each indoor unit and reinforcement radix to obtain difference
It is worth the multiple of Δ T, then by the average value of the multiple of the difference DELTA T of each indoor unit of calculating to obtain a reference value, often at this time
The reinforcement radix that the difference DELTA T-phase of a indoor unit multiplies is different.
Or it can also be through the tube temperature for the indoor heat exchanger for detecting each indoor unit to obtain the base of each indoor unit
Quasi- value, i.e., at this time a reference value of each indoor unit be the corresponding indoor unit detected indoor heat exchanger tube temperature.Certainly value
It must understand, a reference value can also be that the predetermined value that operator sets in the controller in advance or a reference value can be with
It is the predetermined value that user is set by control panel and/or remote controler.
Wherein, the aperture for adjusting corresponding flow regulator according to comparison result in corresponding operational mode, refers to
It is that whether the cold medium flux entered in indoor unit according to comparison result judgement meets the refrigeration of indoor unit or heating requires, is making
Under cold mode, when the cold medium flux that judgement enters indoor unit is required beyond the refrigeration of indoor unit, reduces flow at this time and adjust
The aperture of device is to reduce the flow of refrigerant, in cooling mode, when the cold medium flux that judgement enters indoor unit does not meet room
When the refrigeration of interior machine requires, increase the aperture of flow regulator at this time to increase the flow of refrigerant.
In a heating mode, when the cold medium flux that judgement enters indoor unit is required beyond the heating of indoor unit, at this time
Reduce the aperture of flow regulator to reduce the flow of refrigerant, in a heating mode, when judgement enters the refrigerant of indoor unit
When the heating that flow does not meet indoor unit requires, increase the aperture of flow regulator at this time to increase the flow of refrigerant.
Wherein it should be noted that in the control method of the invention, any manner of comparison can be used to judge refrigerant
The refrigeration whether flow meets indoor unit requires or heating requires.
The control method of multi-line system according to an embodiment of the present invention, by detecting indoor ring locating for each indoor unit
Simultaneously difference DELTA T is calculated in border temperature T1 and corresponding user's set temperature Ts, while difference DELTA T being compared with a reference value
To judge whether the flow of refrigerant meets the refrigeration requirement of indoor unit or heating requires, to by detection T1, Ts and pass through meter
The mode of calculation adjusts the aperture of flow regulator, can meet different indoor units due to different indoor environment temperature T1, Yong Hushe
Determine difference coolant quantity demand caused by temperature Ts, while directly using indoor environment temperature T1, user's set temperature Ts as calculating
Factor calculates the aperture of flow regulator, ensure that refrigerant distributes more accurate reasonable.
As the average value T of the difference DELTA T by calculating multiple indoor unitsIt is averageWhen obtaining a reference value, at this time of the invention
In some embodiments, step S3 includes following sub-step:
S31: by the difference DELTA T of each indoor unit and average value TIt is averageIt is compared to obtain difference；
S32: the operational mode of each indoor unit is detected；
S33: when indoor unit is in refrigeration mode, if difference DELTA T and average value TIt is averageBetween difference be greater than 0, then increase
The aperture of corresponding flow regulator, if difference DELTA T and average value TIt is averageBetween difference less than 0, then reduce corresponding flow
The aperture of regulating device；
When indoor unit is in heating mode, if difference DELTA T and average value TIt is averageBetween difference be greater than 0, then reduce corresponding
Flow regulator aperture, if difference DELTA T and average value TIt is averageBetween difference less than 0, then increase corresponding flow and adjust
The aperture of device.
As the average value T of the difference DELTA T by calculating multiple indoor unitsIt is averageWhen obtaining a reference value, at this time of the invention
In other embodiments, step S3 includes following sub-step:
S31: by the difference DELTA T of each indoor unit and average value TIt is averageIt is compared to obtain ratio；
S32: the operational mode of each indoor unit is detected；
S33: when indoor unit is in refrigeration mode, if difference DELTA T and average value TIt is averageBetween ratio be greater than 1, then increase
The aperture of corresponding flow regulator, if difference DELTA T and average value TIt is averageBetween ratio less than 1, then reduce corresponding flow
The aperture of regulating device；
When indoor unit is in heating mode, if difference DELTA T and average value TIt is averageBetween ratio be greater than 1, then reduce corresponding
Flow regulator aperture, if difference DELTA T and average value TIt is averageBetween ratio less than 1, then increase corresponding flow and adjust
The aperture of device.
Below with reference to the control method of the multi-line system of Fig. 2 description accord to a specific embodiment of that present invention.
Firstly, indoor environment temperature T1 and user's set temperature Ts locating for the indoor unit of all booting operations of detection.
Then the difference DELTA T of every indoor unit (indoor environment temperature T1- user set temperature Ts) is calculated, and is averaged
TIt is average, then (the indoor environment temperature T1- user set temperature Ts) of every interior machine and average value TIt is averageIt compares, judgement should
Electronic expansion valve of indoor unit target aperture.
Then judge the operational mode of indoor unit.
For refrigerating operaton, when the difference of [(indoor environment temperature T1- user set temperature Ts)-average value] is greater than 0, then
The aperture of the indoor unit increases accordingly, and difference is bigger, and aperture is bigger；When the difference is less than 0, then aperture accordingly reduces, and difference is smaller
Then aperture is smaller.For heating operation, the difference of [(indoor environment temperature T1- user set temperature Ts)-average value] is greater than 0
When, then the aperture of the interior machine accordingly reduces, and the bigger aperture of difference is smaller；When the difference is less than 0, then aperture increases accordingly, difference
Smaller then aperture is bigger.
Specifically,
For in refrigeration mode, the target aperture of electric expansion valve=current aperture+f × adjusts radix, for system every time
Heat pattern, the target aperture of electric expansion valve=current aperture-f × adjust radix every time.Radix is wherein adjusted every time to refer to
The adjusting radix of electric expansion valve.
The control method of multi-line system according to an embodiment of the present invention can satisfy different indoor units due in different chamber
Difference coolant quantity demand caused by environment temperature T1, user's set temperature Ts ensure that refrigerant distributes more accurate reasonable, together
When indoor environment temperature T1 and user's set temperature Ts are closer to, room when environment temperature reaches user's set temperature indoors
Interior machine electric expansion valve can maintain a small guide vane, and indoor environment temperature fluctuation can be made in a more suitable model
In enclosing, user's comfort is improved.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (13)
1. a kind of control method of multi-line system, the multi-line system includes outdoor unit and multiple indoor units, each interior
Machine includes flow regulator, which is characterized in that the control method includes the following steps:
S1: indoor environment temperature T1 locating for each indoor unit and corresponding user's set temperature Ts are detected；
S2: the difference DELTA T between the indoor environment temperature T1 of each indoor unit and user's set temperature Ts is calculated；
S3: the difference DELTA T of each indoor unit being compared with a reference value, while detecting the operational mode of each indoor unit,
The aperture of corresponding flow regulator is adjusted in corresponding operational mode according to comparison result；It in step s3, first will be each
The difference DELTA T and reinforcement radix of indoor unit are multiplied to obtain the multiple of the difference DELTA T, then by calculating each indoor unit
The average value of the multiple of difference DELTA T is to obtain a reference value.
2. the control method of multi-line system according to claim 1, which is characterized in that the difference of each indoor unit
The reinforcement radix that Δ T-phase multiplies is different.
3. the control method of multi-line system according to claim 1, which is characterized in that by being located at each interior
The intracorporal ambient temperature detection device of the shell of machine detects the corresponding indoor environment temperature.
4. the control method of multi-line system according to claim 3, which is characterized in that the ambient temperature detection device
For temperature sensor.
5. the control method of multi-line system according to claim 1, which is characterized in that the flow regulator is electricity
Sub- expansion valve.
6. a kind of control method of multi-line system, the multi-line system includes outdoor unit and multiple indoor units, each interior
Machine includes flow regulator, which is characterized in that the control method includes the following steps:
S1: indoor environment temperature T1 locating for each indoor unit and corresponding user's set temperature Ts are detected；
S2: the difference DELTA T between the indoor environment temperature T1 of each indoor unit and user's set temperature Ts is calculated；
S3: the difference DELTA T of each indoor unit being compared with a reference value, while detecting the operational mode of each indoor unit,
The aperture of corresponding flow regulator is adjusted in corresponding operational mode according to comparison result；
Average value T by calculating the difference DELTA T of multiple indoor units is average to obtain a reference value；
The step S3 includes following sub-step:
S31: the difference DELTA T of each indoor unit and average value T are averagely compared to obtain difference；
S32: the operational mode of each indoor unit is detected；
S33: when indoor unit is in refrigeration mode, if the difference between difference DELTA T and average value T is average is greater than 0, increase phase
The aperture for the flow regulator answered, if the difference between difference DELTA T and average value T is average reduces corresponding flow less than 0
The aperture of regulating device；
When indoor unit is in heating mode, if the difference between difference DELTA T and average value T is average is greater than 0, reduce corresponding
The aperture of flow regulator, if the difference between difference DELTA T and average value T is average less than 0, increases corresponding flow and adjusts
The aperture of device.
7. the control method of multi-line system according to claim 6, which is characterized in that by being located at each interior
The intracorporal ambient temperature detection device of the shell of machine detects the corresponding indoor environment temperature.
8. the control method of multi-line system according to claim 7, which is characterized in that the ambient temperature detection device
For temperature sensor.
9. the control method of multi-line system according to claim 6, which is characterized in that the flow regulator is electricity
Sub- expansion valve.
10. a kind of control method of multi-line system, the multi-line system includes outdoor unit and multiple indoor units, each interior
Machine includes flow regulator, which is characterized in that the control method includes the following steps:
S1: indoor environment temperature T1 locating for each indoor unit and corresponding user's set temperature Ts are detected；
S2: the difference DELTA T between the indoor environment temperature T1 of each indoor unit and user's set temperature Ts is calculated；
S3: the difference DELTA T of each indoor unit being compared with a reference value, while detecting the operational mode of each indoor unit,
The aperture of corresponding flow regulator is adjusted in corresponding operational mode according to comparison result；
Average value T by calculating the difference DELTA T of multiple indoor units is average to obtain a reference value；
The step S3 includes following sub-step:
S31: the difference DELTA T of each indoor unit and average value T are averagely compared to obtain ratio；
S32: the operational mode of each indoor unit is detected；
S33: when indoor unit is in refrigeration mode, if the ratio between difference DELTA T and average value T is average is greater than 1, increase phase
The aperture for the flow regulator answered, if the ratio between difference DELTA T and average value T is average reduces corresponding flow less than 1
The aperture of regulating device；
When indoor unit is in heating mode, if the ratio between difference DELTA T and average value T is average is greater than 1, reduce corresponding
The aperture of flow regulator, if the ratio between difference DELTA T and average value T is average less than 1, increases corresponding flow and adjusts
The aperture of device.
11. the control method of multi-line system according to claim 10, which is characterized in that by being located at each room
The intracorporal ambient temperature detection device of the shell of interior machine detects the corresponding indoor environment temperature.
12. the control method of multi-line system according to claim 11, which is characterized in that the environment temperature detection dress
It is set to temperature sensor.
13. the control method of multi-line system according to claim 10, which is characterized in that the flow regulator is
Electric expansion valve.
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