CN106123117A - A kind of air conditioning unit and control method of multi-connected machine - Google Patents
A kind of air conditioning unit and control method of multi-connected machine Download PDFInfo
- Publication number
- CN106123117A CN106123117A CN201610489870.9A CN201610489870A CN106123117A CN 106123117 A CN106123117 A CN 106123117A CN 201610489870 A CN201610489870 A CN 201610489870A CN 106123117 A CN106123117 A CN 106123117A
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- China
- Prior art keywords
- indoor set
- electromagnetic valve
- premises station
- air conditioning
- conditioning unit
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses the air conditioning unit of a kind of multi-connected machine and control method, air conditioning unit include off-premises station and multiple stage indoor set, indoor set is connected with off-premises station respectively by water influent pipeline and outlet pipe, every indoor set includes indoor set heat exchanger and electric expansion valve, being provided with electromagnetic valve in water influent pipeline between indoor set and off-premises station, electromagnetic valve electrically connects with the control circuit of indoor set；When control circuit is energized, electromagnetic valve is in normally open, and when the down circuitry of indoor set, electromagnetic valve switches to closure state, to cut off the circulation of coolant in water influent pipeline.The present invention is according to the mode of communicating of off-premises station Yu multiple stage indoor set, the water influent pipeline of every air conditioning unit indoor set is provided with electromagnetic valve, the coolant flowing in this indoor set can be individually cut off when indoor set power-off, prevent the insufficient liquid hammer problem that compressor is caused of refrigerant evaporation, enable the indoor set of off-premises station and other non-power-off the most effectively to work.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to the air conditioning unit of a kind of multi-connected machine and control method.
Background technology
By off-premises station and multiple stage indoor set form multiple air conditioning unit in office building, market etc., large-scale place obtains
Commonly used, the indoor set number of units that current off-premises station can connect gets more and more, and assembly environment also becomes increasingly complex, and especially assembles
Air-conditioning at office building；Owing to indoor set power supply is independently controlled by each owner, part indoor set coverlet the most often occurs
The situation of arbitrary electricity.
Under cooling in summer operating mode, during air conditioning unit operation refrigeration mode, when an indoor set accident power-off, as resolutely
Before electricity, the electric expansion valve of indoor set is in output state, and low temperature coolant will cannot directly through the indoor set of power-off, coolant
Fully evaporating and be in a liquid state or the state of gas-liquid binary states, in air conditioning unit overall pipeline, the coolant of liquid or gas-liquid binary states exists
After mixing with the gaseous coolant of other indoor sets normally worked, when flowing back into off-premises station, it is easily caused compressor of outdoor unit liquid
The problem such as hit.
Summary of the invention
It is an object of the invention to, it is provided that the air conditioning unit and control method of a kind of multi-connected machine, it is possible to certain room wherein
Cut off the refrigerant pipeline flowing of this indoor set during interior machine power-off, reduce the harmful effect of the compressor to shared off-premises station, carry
The stability of high air conditioning unit overall operation,
The present invention realizes above-mentioned purpose and be the technical scheme is that
According to an aspect of the invention, it is provided a kind of multi-connected machine is air conditioning unit, indoor including off-premises station and multiple stage
Machine, indoor set is connected with off-premises station respectively by water influent pipeline and outlet pipe, every indoor set include indoor set heat exchanger with
Electric expansion valve, the water influent pipeline between indoor set and off-premises station is provided with electromagnetic valve, and electromagnetic valve is electric with the control of indoor set
Road electrically connects；When control circuit is energized, electromagnetic valve is in normally open, and when the down circuitry of indoor set, electromagnetic valve switches
For closure state, to cut off the circulation of coolant in water influent pipeline.
Further, water influent pipeline includes feed liquor supervisor and is responsible for a plurality of feed liquor arm connected, feed liquor master with feed liquor
Pipe connects with off-premises station, and feed liquor arm connects with indoor set, and electromagnetic valve and electric expansion valve are arranged on feed liquor arm.
Further, every indoor set includes at least one electromagnetic valve, and electromagnetic valve is positioned at electric expansion valve and feed liquor supervisor
Between, and/or electromagnetic valve is between electric expansion valve and indoor set heat exchanger.
Further, feed liquor supervisor is provided with the electromagnetic valve that the circuit with off-premises station electrically connects.
Further, electromagnetic valve is guide electromagnetic valve.
According to a further aspect in the invention, additionally provide the air conditioning unit control method of a kind of multi-connected machine, including: detection
Air conditioning unit middle indoor set and the running status of off-premises station, when off-premises station and at least one indoor set run, open air conditioner
The electromagnetic valve of all indoor sets in group, and control the electric expansion valve of other off-duty indoor set with default oil return aperture
Opening, wherein, oil return aperture determines according to the return flow needed for indoor set.
Further, electromagnetic valve and electric expansion valve are opened with the cycle synchronisation set.
Further, the method also includes: according to the interior machine flow of indoor set run and off-duty indoor set
Return flow, determines the outer machine flow of off-premises station, and controls machine flow conveying coolant beyond off-premises station.
The present invention uses technique scheme to be had the beneficial effect that
The present invention is according to the mode of communicating of off-premises station Yu multiple stage indoor set, at the feed tube of every air conditioning unit indoor set
It is provided with electromagnetic valve on road, can individually cut off the coolant flowing in this indoor set when indoor set power-off, prevent refrigerant evaporation
Insufficient liquid hammer problem that compressor is caused, it is to avoid air conditioning unit entirety is caused the adverse effects such as disorderly closedown, makes outdoor
The indoor set of machine and other non-power-off can the most effectively work.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram that the present invention is air conditioning unit.
Wherein, 1, off-premises station；2, indoor set；3, indoor set heat exchanger；4, electric expansion valve；5, electromagnetic valve；6, feed liquor master
Pipe；7, feed liquor arm；8, water influent pipeline；9, outlet pipe.
Detailed description of the invention
For the scheme in the present invention is clearly described, preferred embodiment is given below and is described with reference to the accompanying drawings.With
Under illustrative in nature on be merely exemplary and be not intended to limit the application of the disclosure or purposes.It should be appreciated that
In whole accompanying drawings, corresponding reference represents identical or corresponding parts and feature.
As it is shown in figure 1, the invention provides the air conditioning unit of a kind of multi-connected machine, including off-premises station 1 and indoor set 2, multiple stage
Indoor set 2 is connected with off-premises station 1 by water influent pipeline 8 and outlet pipe 9, shares an off-premises station, room between multiple stage indoor set
The coolant of outer machine constitutes refrigerant circulation via water influent pipeline 8 and outlet pipe 9 with multiple stage indoor set 2；Every described indoor set 2 wraps
Including indoor set heat exchanger 3, the water influent pipeline 8 between indoor set 2 and off-premises station 1 is provided with electromagnetic valve 5, electromagnetic valve 5 is with indoor
The control circuit electrical connection of machine 2；When described control circuit is energized, electromagnetic valve 5 is in normally open, at described indoor set 2
During down circuitry, electromagnetic valve 5 switches to closure state, to cut off the circulation of coolant in water influent pipeline 8.The present invention is in water influent pipeline
On 8 arrange electromagnetic valve 5 can mechanical cut-out water influent pipeline 8, thus realize physics block coolant flow into indoor set 2.
In conventional air-conditioning unit structure, the refrigerant pipeline of off-premises station 1 and indoor set 2 typically uses the connection of bus
Mode, wherein, water influent pipeline 8 includes feed liquor supervisor 6 and a plurality of feed liquor arm 7 connected with feed liquor supervisor 6, feed liquor supervisor 6
Connecting with off-premises station 1, feed liquor arm 7 connects with indoor set 2；In the pipeline structure being not powered on magnet valve 5, when wherein one or several
When platform indoor set 2 is by the manual power-off of user or fault power-off, coolant, still in duty, is propped up by off-premises station 1 along feed liquor
What pipe 7 was lasting is delivered in indoor set 2, and the object of coolant conveying still comprises the indoor set 2 that power-off is shut down；Ask for this
Topic, may be contained within feed liquor arm 7 by electromagnetic valve 5 and electric expansion valve 4 in one embodiment of the present of invention, it is ensured that energising
Under state, the electric expansion valve 4 of indoor set 2 normally works, and can also cut off coolant circulation in the power-off state, it is to avoid cold simultaneously
Matchmaker flows into indoor set along feed liquor arm 7 and electric expansion valve 4, prevents indoor set parts freezed damage and compressor liquid hammer
Etc. problem.
In an optional embodiment of the present invention, every indoor set 2 includes an electromagnetic valve 5, and electromagnetic valve 5 is positioned at electronics
Between expansion valve 4 and feed liquor supervisor 6, No. 1 indoor set as shown in Figure 1, thus feed liquor is responsible for coolant and the electronic expansion of 6
Valve 4 is isolated, it is to avoid electric expansion valve 4 is caused bigger surge by the coolant persistently carried.
In an optional embodiment of the present invention, every indoor set 2 includes an electromagnetic valve 5, and electromagnetic valve 5 is positioned at electromagnetism
Valve 5 between electric expansion valve 4 and indoor set heat exchanger 3, No. 2 indoor sets as shown in Figure 1, electric expansion valve can be blocked
4 and leading portion feed liquor arm 7 in the inflow of coolant, reduce the coolant total amount finally flowing into indoor set 2 and compressor, reduce
The loss of indoor set 2 and compressor is affected by liquid or gas-liquid binary states coolant.
In an optional embodiment of the present invention, feed liquor supervisor 6 is also equipped with electrically connecting with the circuit of off-premises station 1
Electromagnetic valve 5, it is to avoid when power is off, the coolant of the most supercool cooling of part flows in indoor set 2 off-premises station 1, affects making of user
With experience.
Preferably, electromagnetic valve 5 set in water influent pipeline 8 in the present invention uses guide electromagnetic valve, can be disconnected
During electricity, under the spring force and main valve plug action of gravity of valve body, the fluid pressure of coolant is utilized to close primary valve, it is adaptable to fluid
The refrigerant pipeline that pressure is higher.
In another embodiment of the invention, additionally provide the air conditioning unit control method of a kind of multi-connected machine, including: inspection
Survey air conditioning unit middle indoor set and the running status of off-premises station, when off-premises station and at least one indoor set run, open air-conditioning
The electromagnetic valve of all indoor sets in unit, and the electric expansion valve controlling other off-duty indoor set opens with default oil return
Degree is opened, and wherein, oil return aperture determines according to the return flow needed for indoor set.During the conventional properly functioning work of indoor set,
Electric expansion valve opens conveying coolant with normal aperture K1 set, but is overstock to reduce other off-duty indoor sets
The oil point such as refrigeration oil, the present invention by opens solenoid valve conducting refrigerant pipeline and opens electronics with default oil return valve degree K2
The steps such as expansion valve, it is possible to while on or off refrigerant pipeline, it is achieved periodically oil return conveying circulation, thus ensure
The normal work of compressor.
General, oil return aperture K2 is less than normal aperture K1, while ensureing oil return circulation, also avoids cold medium flux
Excessive freezing indoor set parts.
Electromagnetic valve and electric expansion valve in the present invention were opened with the cycle set, and the concrete unlatching cycle is according to air conditioner
The type of group determines with actual installation service condition, and this is not construed as limiting by the present invention.In time period between the unlatching cycle, not
The electromagnetic valve of the indoor set run is in closure state, to block the flowing of coolant, thus reduces indoor set and enters for a long time
The produced power consumption of row oil return conveying.
The method also includes: according to interior machine flow and the return flow of off-duty indoor set of the indoor set run,
Determine the outer machine flow of off-premises station, and control machine flow conveying coolant beyond off-premises station.General, outer machine flow is air conditioning unit
In the interior machine flow of indoor set of all operations and the return flow sum of off-duty indoor set.
In sum, above said content is only embodiments of the invention, is merely to illustrate the principle of the present invention, not uses
In limiting protection scope of the present invention.All within the spirit and principles in the present invention, any amendment, the equivalent made, change
Enter, should be included within the scope of the present invention.
Claims (8)
1. a multi-connected machine is air conditioning unit, and including off-premises station (1) and multiple stage indoor set (2), indoor set (2) passes through water influent pipeline
(8) being connected respectively with described off-premises station (1) with outlet pipe (9), every described indoor set (2) includes indoor set heat exchanger (3)
With electric expansion valve (4), it is characterised in that set in the water influent pipeline (8) between described indoor set (2) and described off-premises station (1)
Being equipped with electromagnetic valve (5), described electromagnetic valve (5) electrically connects with the control circuit of indoor set (2)；When described control circuit is energized,
Described electromagnetic valve (5) is in normally open, and when the down circuitry of described indoor set (2), described electromagnetic valve (5) switches to Guan Bi
State, to cut off the circulation of described water influent pipeline (8) interior coolant.
Multi-connected machine the most according to claim 1 air conditioning unit, it is characterised in that described water influent pipeline (8) includes feed liquor
Supervisor (6) and a plurality of feed liquor arm (7) connected with described feed liquor supervisor (6), described feed liquor supervisor (6) and described off-premises station
(1) connection, described feed liquor arm (7) connects with described indoor set (2), and described electromagnetic valve (5) and described electric expansion valve (4) set
It is placed on described feed liquor arm (7).
Multi-connected machine the most according to claim 2 air conditioning unit, it is characterised in that every described indoor set (2) include to
A few described electromagnetic valve (5), described electromagnetic valve (5) is positioned between described electric expansion valve (4) and described feed liquor supervisor (6),
And/or described electromagnetic valve (5) is positioned between described electric expansion valve (4) and described indoor set heat exchanger (3).
Multi-connected machine the most according to claim 2 air conditioning unit, it is characterised in that be provided with on described feed liquor supervisor (6)
The electromagnetic valve (5) electrically connected with the circuit of described off-premises station (1).
Multi-connected machine the most according to claim 1 air conditioning unit, it is characterised in that described electromagnetic valve (5) is pilot-operated type electricity
Magnet valve.
6. the air conditioning unit control method of a multi-connected machine, it is characterised in that including:
Detect air conditioning unit described in indoor set and the running status of off-premises station, in the described indoor of described off-premises station and at least
When machine runs, open described air conditioning unit in the electromagnetic valve of all indoor sets, and control the electricity of other off-duty indoor set
Sub-expansion valve is opened with default oil return aperture, and wherein, described oil return aperture determines according to the return flow needed for indoor set.
Control method the most according to claim 6, it is characterised in that described electromagnetic valve and described electric expansion valve are to set
Cycle synchronisation open.
Control method the most according to claim 6, it is characterised in that also include:
Interior machine flow according to the indoor set run and the return flow of off-duty indoor set, determine the outer machine stream of off-premises station
Amount, and control described off-premises station with described outer machine flow conveying coolant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489870.9A CN106123117A (en) | 2016-06-29 | 2016-06-29 | A kind of air conditioning unit and control method of multi-connected machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489870.9A CN106123117A (en) | 2016-06-29 | 2016-06-29 | A kind of air conditioning unit and control method of multi-connected machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106123117A true CN106123117A (en) | 2016-11-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610489870.9A Pending CN106123117A (en) | 2016-06-29 | 2016-06-29 | A kind of air conditioning unit and control method of multi-connected machine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314476A (en) * | 2017-05-27 | 2017-11-03 | 珠海格力电器股份有限公司 | The control method of air-conditioner set and air-conditioner set |
| CN107477931A (en) * | 2017-08-02 | 2017-12-15 | 广东美的暖通设备有限公司 | Multiple on-line system and its indoor set power down control method |
| CN108895604A (en) * | 2018-07-25 | 2018-11-27 | 珠海格力电器股份有限公司 | A kind of multi-online air-conditioning system and its control method |
| CN109827308A (en) * | 2018-12-17 | 2019-05-31 | 珠海格力电器股份有限公司 | A kind of multi-line system control method, device and multi-line system |
| CN112594875A (en) * | 2021-01-19 | 2021-04-02 | 广东积微科技有限公司 | Method for controlling number of communication units of multi-online indoor unit |
| CN113280398A (en) * | 2021-06-11 | 2021-08-20 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
| CN113874661A (en) * | 2019-05-28 | 2021-12-31 | 大金工业株式会社 | Air conditioning system |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| CN115388479A (en) * | 2021-05-24 | 2022-11-25 | 松下电器研究开发(苏州)有限公司 | Air conditioning system |
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| CN105423421A (en) * | 2015-12-02 | 2016-03-23 | 珠海格力电器股份有限公司 | Indoor unit of multi-split air conditioner, multi-split air conditioner and control method of multi-split air conditioner |
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| KR100504499B1 (en) * | 2003-01-13 | 2005-08-03 | 엘지전자 주식회사 | Multi-type air conditioner for cooling/heating the same time |
| CN101113854A (en) * | 2006-07-26 | 2008-01-30 | 海尔集团公司 | Oil equalizing and coolant counterbalancing system of multiple air-conditioning unit and controlling method thereof |
| CN101592387A (en) * | 2008-05-29 | 2009-12-02 | 乐金电子(天津)电器有限公司 | The control method of multiple air-conditioner indoor machine during heating |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314476A (en) * | 2017-05-27 | 2017-11-03 | 珠海格力电器股份有限公司 | The control method of air-conditioner set and air-conditioner set |
| CN107314476B (en) * | 2017-05-27 | 2023-08-29 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
| CN107477931A (en) * | 2017-08-02 | 2017-12-15 | 广东美的暖通设备有限公司 | Multiple on-line system and its indoor set power down control method |
| CN107477931B (en) * | 2017-08-02 | 2019-12-03 | 广东美的暖通设备有限公司 | Multi-line system and its indoor unit power down control method |
| CN108895604A (en) * | 2018-07-25 | 2018-11-27 | 珠海格力电器股份有限公司 | A kind of multi-online air-conditioning system and its control method |
| CN109827308A (en) * | 2018-12-17 | 2019-05-31 | 珠海格力电器股份有限公司 | A kind of multi-line system control method, device and multi-line system |
| CN109827308B (en) * | 2018-12-17 | 2020-06-26 | 珠海格力电器股份有限公司 | Multi-split system control method and device and multi-split system |
| CN113874661B (en) * | 2019-05-28 | 2023-03-31 | 大金工业株式会社 | Air conditioning system |
| CN113874661A (en) * | 2019-05-28 | 2021-12-31 | 大金工业株式会社 | Air conditioning system |
| CN112594875A (en) * | 2021-01-19 | 2021-04-02 | 广东积微科技有限公司 | Method for controlling number of communication units of multi-online indoor unit |
| CN115388479A (en) * | 2021-05-24 | 2022-11-25 | 松下电器研究开发(苏州)有限公司 | Air conditioning system |
| CN113280398A (en) * | 2021-06-11 | 2021-08-20 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
| CN114279043B (en) * | 2021-12-08 | 2022-11-25 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
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Application publication date: 20161116 |