CN109899938A - The control method of multi-connected machine, multi-online indoor machine leaving air temp - Google Patents
The control method of multi-connected machine, multi-online indoor machine leaving air temp Download PDFInfo
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- CN109899938A CN109899938A CN201910189592.9A CN201910189592A CN109899938A CN 109899938 A CN109899938 A CN 109899938A CN 201910189592 A CN201910189592 A CN 201910189592A CN 109899938 A CN109899938 A CN 109899938A
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- indoor unit
- leaving air
- air temp
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses the control methods of a kind of multi-connected machine, multi-online indoor machine leaving air temp, when wherein the control method of multi-online indoor machine leaving air temp includes: that indoor unit when installation site in same room is more than 1, judge whether the leaving air temp of each indoor unit in same room is uniform, if uneven, the average value of the leaving air temp of the indoor unit in same room is then calculated as control target temperature value, the leaving air temp of each indoor unit is controlled according to the control target temperature value.The present invention can be such that temperature in room is rapidly achieved uniformly.
Description
Technical field
The present invention relates to multi-connected machines, and adjust the uniform control method of multi-online indoor machine leaving air temp.
Background technique
For multi-online air-conditioning system, it is possible to 2 or 2 or more indoor units can be mounted on same room with them
Interior, in use, although the indoor unit of different installation sites is the same air conditioner circulating system, but due to indoor temperature field
And wall load is unevenly distributed, air-conditioning return air temperature is generally also present non-uniform phenomenon, in addition every indoor unit amount of capacity
Different, internal component operating parameter is inconsistent, and cold medium flux is inconsistent, causes leaving air temp irregular, or even will appear
The case where differing greatly.It eventually leads to indoor different zones temperature field to differ greatly, cold and hot to be unevenly distributed, crowd experiences outlet air
Temperature is inconsistent, and it is poor to experience.
Summary of the invention
It is possible to non-uniform technical problem in order to solve multi-gang air-conditioner leaving air temp in the prior art, the present invention proposes
A kind of control method of multi-online indoor machine leaving air temp, when indoor unit of the installation site in same room is more than 1,
Judge whether the leaving air temp of each indoor unit in same room is uniform, if unevenly, calculating the indoor unit in same room
Leaving air temp average value as control target temperature value, wind-warm syndrome is gone out to each indoor unit according to the control target temperature value
Degree is controlled.
In one embodiment, whether the leaving air temp for judging each indoor unit in same room is uniformly specific is wrapped
It includes:
The leaving air temp for calculating the indoor unit subtracts the absolute difference of the control target temperature value, if there is the institute of indoor unit
State whether absolute difference is less than or equal to the leaving air temp of the indoor unit and the target difference of the control target temperature value,
Then determine that the leaving air temp is uniform, otherwise determines that the leaving air temp is uneven.
In a particular embodiment, control according to leaving air temp of the control target temperature value to each indoor unit specific
Include:
If currently be refrigeration mode, judge the current leaving air temp of the indoor unit subtract control target temperature value difference whether
Greater than 0, if more than 0, then reduce the aperture of the electronic expansion valve of indoor unit, and/or reduce the rotation speed of fan of the indoor unit.
If being currently refrigeration mode, judge that the current leaving air temp of the indoor unit subtracts the difference of control target temperature value
Whether less than 0, if increasing the aperture of the electronic expansion valve of indoor unit, and/or improve the blower of the indoor unit less than 0
Revolving speed.
If being currently heating mode, judge that the current leaving air temp of the indoor unit subtracts the difference of control target temperature value
Whether less than 0, if reducing the aperture of the electronic expansion valve of indoor unit, and/or reduce the blower of the indoor unit less than 0
Revolving speed.
If being currently heating mode, judge that the current leaving air temp of the indoor unit subtracts the difference of control target temperature value
Whether it is greater than 0, if more than 0, then increases the aperture of the electronic expansion valve of indoor unit, and/or improve the blower of the indoor unit
Revolving speed.
In a particular embodiment, the average value of the leaving air temp for calculating the indoor unit in same room specifically includes:
When the quantity of the indoor unit in same room is 2, the sum of leaving air temp of all indoor units is obtained divided by its quantity
To the average value.
When the quantity of the indoor unit in same room be 3 or more when, by the leaving air temp of all indoor units most
After big value and minimum value removal, then the sum of leaving air temp of remaining indoor unit obtained divided by the quantity of remaining indoor unit described
Average value.
In a particular embodiment, it obtain multi-connected machine can together by carrying out manual setting on the controller of the indoor unit
Indoor unit in one room；Or uniformly setting room number to each indoor unit by centralized control end obtain multi-connected machine can together
Indoor unit in one room.
The invention also provides a kind of multi-connected machines, adjust same room using the control method in above-mentioned technical proposal
It is mounted with the leaving air temp of 2 or 2 or more indoor units.
Preferably, the blower of the indoor unit is driven by direct current generator.
Preferably, filter is equipped with before and after the electric expansion valve of the multi-connected machine.
The present invention, can be by multiple channel come to interior by the engineering installation function to indoor unit increase installation site
Machine carries out room location setting.Leaving air temp identification, inside are carried out relatively by two or more the indoor units to same room
It calculates, whether the leaving air temp to judge each indoor unit in same room is uniform, if unevenly, averaging method, boundary again
Control target temperature value in the fixed room, quickly keeps the leaving air temp in same room uniform.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is indoor set system figure of the invention.
Specific embodiment
The principle and embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Fig. 1 shows indoor set system figure of the invention, in the present embodiment, pacifies before and after the electric expansion valve 2 of indoor unit
Two filters 1 have been filled, can preferably filter out impurity in this way, refrigerant enters the room after electric expansion valve 2 and filter
In heat exchanger 5, the refrigerant import and export of indoor heat exchanger 5 is respectively equipped with inlet pipe temperature temperature sensing package 3(temperature sensor) and outlet pipe
Temperature temperature sensing package 4(temperature sensor), indoor heat exchanger 5 is additionally provided with leaving air temp sensor 9 and return air temperature sensor 8, room
Interior heat exchanger 5 is set there are two blower 6, is driven by a direct current generator 7, step-less adjustment may be implemented in direct current generator, in maximum
Any rotational speed regulation in the range of speeds.
The control uniform method of leaving air temp provided by the invention is: when indoor unit of the installation site in same room
When more than 1, judge whether the leaving air temp of each indoor unit in same room is uniform, if unevenly, calculating same room
The average value of the leaving air temp of interior indoor unit is as control target temperature value, the control target temperature value pair newly obtained according to this
The leaving air temp of each indoor unit is controlled.I.e. the system of multi-connected machine detects same room indoor unit quantity, number of units 1
When platform, without control of the present invention.When number of units is 2 or more, start to carry out control of the present invention.
Specifically when installation site is arranged, same room installation site engineering installation function can be increased to indoor unit.?
It, can be by carrying out manual setting on machine controller indoors, or by centralized control platform etc. to indoor unit when project installation
It carries out the unified same room that sets to number, thus the installation site of available each indoor unit, to the interior machine of same room
Carry out leaving air temp control.
There are two types of calculations for the average value of the signified leaving air temp for calculating the indoor unit in same room of the invention.It is logical
The leaving air temp sensor 9 for crossing indoor unit carries out leaving air temp identification judgement to the indoor unit of same room, and inside relatively calculates,
Algorithm is stored in main controller chip.
If chummery indoor unit only has 3 or more, method is ignored using limiting value, removes maximum of T max, minimum value
Tmin averages to machine leaving air temp in other, using this average value as control target temperature value Ttarget, i.e., when same
When the number of units of indoor unit in a room is 3, remove a maximum value and a minimum value, then with that interior of median
The leaving air temp of machine controls 3 indoor units as control target temperature value.If 3 or more indoor units are mounted on together
One room, then by after the maximum value and minimum value removal in the leaving air temp of all indoor units, then by remaining indoor unit
The sum of leaving air temp obtains average value divided by the quantity of remaining indoor unit.
If indoor unit only has 2 in same room, without the removal of maximum value, minimum value, directly in two
Machine leaving air temp average value obtains the sum of leaving air temp of two indoor units divided by 2 as control target temperature value Ttarget
To the average value.
It is △ t that we, which define all indoor unit leaving air temps and the actual temperature difference of control target temperature value Ttarget,
The target difference for defining all indoor unit leaving air temps and control target temperature value Ttarget is △ T-target.
Judge that indoor unit subtracts the range of the absolute difference │ △ t │ of Current Temperatures control target value, if difference is absolute
Value │ △ t │ > target difference △ T-target, illustrates that the indoor unit leaving air temp is too low or excessively high, unevenly, will use family
Feel supercooling or overheat, needs to carry out leaving air temp equilibrium adjustment to indoor unit.
If absolute difference │ △ t │≤target difference △ T-target, illustrates the indoor unit leaving air temp in control
It is more appropriate for users in OK range, it does not need to progress leaving air temp equilibrium adjustment.
If current operation of air conditioner refrigeration mode, the uneven │ △ t │ > △ T-target of leaving air temp, and △ t > 0, say
The bright indoor unit leaving air temp is higher than control target value, reduces cold medium flux by reducing electronic expansion valve of indoor unit aperture at this time
Restriction effect is increased, or the rotation speed of fan of indoor unit can also be reduced simultaneously, to reduce the indoor unit leaving air temp.
If current operation of air conditioner refrigeration mode, the uneven │ △ t │ > △ T-target of leaving air temp, and △ t < 0, say
The bright indoor unit leaving air temp increases cold medium flux by increasing electronic expansion valve of indoor unit aperture at this time lower than control target value
Reduce restriction effect, or the rotation speed of fan of indoor unit can also be improved simultaneously, to improve the indoor unit leaving air temp.
If current operation of air conditioner heating mode, the uneven │ △ t │ > △ T-target of leaving air temp, and △ t > 0, say
The bright indoor unit leaving air temp is higher than control target value, increases refrigerant stream by increasing electronic expansion valve of indoor unit aperture at this time
Amount, or the rotation speed of fan of indoor unit can also be improved simultaneously, to reduce the indoor unit leaving air temp.
If current operation of air conditioner heating mode, the uneven │ △ t │ > △ T-target of leaving air temp, and △ t < 0, say
The bright indoor unit leaving air temp reduces refrigerant stream by reducing electronic expansion valve of indoor unit aperture at this time lower than control target value
Amount, or the rotation speed of fan of indoor unit can also be reduced simultaneously, to improve the indoor unit leaving air temp.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (12)
1. a kind of control method of multi-online indoor machine leaving air temp, which is characterized in that when installation site is in same room
When indoor unit is more than 1, judge whether the leaving air temp of each indoor unit in same room is uniform, if unevenly, calculating same
The average value of the leaving air temp of indoor unit in one room is as control target temperature value, according to the control target temperature value pair
The leaving air temp of each indoor unit is controlled.
2. the control method of multi-online indoor machine leaving air temp as described in claim 1, which is characterized in that the judgement is same
Whether the leaving air temp of each indoor unit in room uniformly specifically includes:
The leaving air temp for calculating the indoor unit subtracts the absolute difference of the control target temperature value, if there is the institute of indoor unit
State whether absolute difference is less than or equal to the leaving air temp of the indoor unit and the target difference of the control target temperature value,
Then determine that the leaving air temp is uniform, otherwise determines that the leaving air temp is uneven.
3. the control method of multi-online indoor machine leaving air temp as described in claim 1, which is characterized in that according to the temperature
Control target value carries out control to the leaving air temp of each indoor unit and specifically includes:
If being currently refrigeration mode, judge that the current leaving air temp of the indoor unit subtracts the difference of the control target temperature value
Whether it is greater than 0, if more than 0, then reduces the aperture of the electronic expansion valve of indoor unit, and/or reduce the blower of the indoor unit
Revolving speed.
4. the control method of multi-online indoor machine leaving air temp as described in claim 1, which is characterized in that according to the temperature
Control target value carries out control to the leaving air temp of each indoor unit and specifically includes:
If being currently refrigeration mode, judge that the current leaving air temp of the indoor unit subtracts the difference of the control target temperature value
Whether less than 0, if increasing the aperture of the electronic expansion valve of indoor unit, and/or improve the blower of the indoor unit less than 0
Revolving speed.
5. the control method of multi-online indoor machine leaving air temp as described in claim 1, which is characterized in that according to the temperature
Control target value carries out control to the leaving air temp of each indoor unit and specifically includes:
If being currently heating mode, judge that the current leaving air temp of the indoor unit subtracts the difference of the control target temperature value
Whether less than 0, if reducing the aperture of the electronic expansion valve of indoor unit, and/or reduce the blower of the indoor unit less than 0
Revolving speed.
6. the control method of multi-online indoor machine leaving air temp as described in claim 1, which is characterized in that according to the temperature
Control target value carries out control to the leaving air temp of each indoor unit and specifically includes:
If being currently heating mode, judge that the current leaving air temp of the indoor unit subtracts the difference of the control target temperature value
Whether it is greater than 0, if more than 0, then increases the aperture of the electronic expansion valve of indoor unit, and/or improve the blower of the indoor unit
Revolving speed.
7. the control method of multi-online indoor machine leaving air temp as described in claim 1, which is characterized in that the calculating is same
The average value of the leaving air temp of indoor unit in room specifically includes:
When the quantity of the indoor unit in same room is 2, the sum of leaving air temp of all indoor units is obtained divided by its quantity
To the average value.
8. the control method of multi-online indoor machine leaving air temp as described in claim 1, which is characterized in that the calculating is same
The average value of the leaving air temp of indoor unit in room specifically includes:
When the quantity of the indoor unit in same room is 3 or more, by the maximum value in the leaving air temp of all indoor units
After minimum value removal, then the sum of leaving air temp of remaining indoor unit obtained divided by the quantity of remaining indoor unit described average
Value.
9. the control method of multi-online indoor machine leaving air temp as described in claim 1, which is characterized in that by the room
Manual setting is carried out on the controller of interior machine makes multi-connected machine that can obtain the indoor unit in same room；Or pass through centralized control end
Uniformly setting room number to each indoor unit makes multi-connected machine that can obtain the indoor unit in same room.
10. a kind of multi-connected machine, which is characterized in that adjusted using control method as claimed in any one of claims 1 to 9 same
One room is mounted with the leaving air temp of 2 or 2 or more indoor units.
11. multi-connected machine as claimed in claim 10, which is characterized in that the blower of the indoor unit is driven by direct current generator.
12. multi-connected machine as claimed in claim 10, which is characterized in that be equipped with filtering before and after the electric expansion valve of the multi-connected machine
Device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910189592.9A CN109899938A (en) | 2019-03-13 | 2019-03-13 | The control method of multi-connected machine, multi-online indoor machine leaving air temp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910189592.9A CN109899938A (en) | 2019-03-13 | 2019-03-13 | The control method of multi-connected machine, multi-online indoor machine leaving air temp |
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Cited By (3)
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| CN111023492A (en) * | 2019-11-28 | 2020-04-17 | 合肥通用制冷设备有限公司 | Fresh air temperature and humidity control method |
| CN112594796A (en) * | 2020-11-27 | 2021-04-02 | 重庆海尔空调器有限公司 | Air conditioner air outlet control method and device and air conditioner |
| CN113405240A (en) * | 2021-06-24 | 2021-09-17 | 海信（山东）空调有限公司 | Control method and control device for synchronous multi-split air conditioner, air conditioner and storage medium |
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| CN111023492B (en) * | 2019-11-28 | 2021-04-27 | 合肥通用制冷设备有限公司 | Fresh air temperature and humidity control method |
| CN112594796A (en) * | 2020-11-27 | 2021-04-02 | 重庆海尔空调器有限公司 | Air conditioner air outlet control method and device and air conditioner |
| CN113405240A (en) * | 2021-06-24 | 2021-09-17 | 海信（山东）空调有限公司 | Control method and control device for synchronous multi-split air conditioner, air conditioner and storage medium |
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Application publication date: 20190618 |