CN106403413A - Air conditioning system and control method - Google Patents
Air conditioning system and control method Download PDFInfo
- Publication number
- CN106403413A CN106403413A CN201611075648.0A CN201611075648A CN106403413A CN 106403413 A CN106403413 A CN 106403413A CN 201611075648 A CN201611075648 A CN 201611075648A CN 106403413 A CN106403413 A CN 106403413A
- Authority
- CN
- China
- Prior art keywords
- air conditioning
- conditioning system
- pressure
- heat exchanger
- expansion valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000003507 refrigerant Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 23
- 238000005057 refrigeration Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- 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
Abstract
The invention relates to an air conditioning system and a control method. The air conditioning system comprises a main pipeline; and the main pipeline includes a compressor, a four-way valve, an outdoor heat exchanger, a first throttling module and an indoor heat exchanger connected as a loop. The air conditioning system further comprises an auxiliary pipeline formed by serially connecting an electronic expansion valve, a liquid storage tank, a one-way valve and a second throttling module in sequence; the auxiliary pipeline is connected to a pipeline between an outlet of the outdoor heat exchanger and an inlet of the indoor heat exchanger in the main pipeline in parallel; and a pressure sensor is arranged in the main pipeline of the air conditioning system for monitoring the pressure of the air conditioning system. The air conditioning system and the control method realize storage of refrigerants at high temperature and recirculation of the refrigerants in the system at low temperature; the system is stable in operation; the operation load of the system is reduced; the environmental protection is facilitated; and the user experience is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly to a kind of air conditioning system of high-temperature refrigeration and its control method.
Background technology
The mode that current air conditioning system is usually taken off-load in high-temperature refrigeration reduces system loading, and air conditioning system system
When cold, required cold-producing medium gradually decreases with the rising of outside temperature, and existing air conditioning system cold-producing medium cannot be with
The change of outdoor temperature and change, thus causing to cause system loading excessive in outdoor high temperature because cold-producing medium is on the high side, shadow
Ring the reliability of unit.
Content of the invention
(1) technical problem to be solved
Mesh of the present invention technical problem to be solved is that air conditioning system cold-producing medium cannot be with outdoor in air-conditioning high-temperature refrigeration
The change of temperature and change.
(2) technical scheme
In order to solve above-mentioned technical problem, the present invention provides a kind of air conditioning system, including main line, described main line
Including connecting into refrigerating circuit or the compressor, outdoor heat exchanger, first throttle assembly and the indoor heat exchanger that heat loop；Described
Air conditioning system also includes the auxiliary pipeline being sequentially connected in series by electric expansion valve, fluid reservoir, check valve and the second orifice union, described auxiliary
Pipeline is parallel to the pipeline in described main line between the outlet of outdoor heat exchanger and described indoor heat exchanger entrance.
Wherein, described compressor is connected with outdoor heat converter and indoor heat converter by cross valve.
Wherein, it is provided with pressure transducer in the main line of described air conditioning system, for monitoring air conditioning system pressure.
Wherein, described air conditioning system is provided with controller, and described controller is connected with pressure transducer and electric expansion valve respectively
Connect, control the aperture of electric expansion valve for the signal according to pressure transducer.
Wherein, the outlet mouth of pipe of described fluid reservoir is arranged at the bottom of fluid reservoir.
Wherein, described compressor air suction mouth is provided with return-air part, for preventing from sucking the gas backstreaming of compressor.
Present invention also offers a kind of control method of above-mentioned air conditioning system, comprise the following steps：
When air-conditioner runs refrigeration mode, monitor air conditioning system pressure Pd, and judge air conditioning system pressure PdWhether it is more than
System first preset pressure Pds1,
As air conditioning system pressure Pd≤ system first preset pressure Pds1When, controller controls electric expansion valve to cut out, air-conditioning
System is run by current state and is continued to monitor system pressure；
As air conditioning system pressure Pd>System first preset pressure Pds1When, controller controls electric expansion valve to preset aperture
Open, cold-producing medium enters fluid reservoir, then export through fluid reservoir outlet tube, flow through check valve and the second orifice union is laggard enters the room
Interior heat exchanger, and continue to monitor system pressure.
When system second preset pressure Pds2>=air conditioning system pressure Pd>System first preset pressure Pds1When, controller control
Electric expansion valve processed keeps current aperture, and air conditioning system is run by current state and continued to monitor system pressure；
As air conditioning system pressure Pd>System second preset pressure Pds2When, controller controls electric expansion valve with pre-set velocity
Increase aperture, and continue to monitor system pressure.
Wherein, described fluid reservoir can be according to the change adjustment storage of air conditioning system pressure or the refrigerant amount of output.
(3) beneficial effect
The beneficial effect of air conditioning system provided by the present invention and its control method is to carry out high-temperature refrigeration in air conditioning system
When, air conditioning system can be controlled in high temperature to store cold-producing medium, and system refrigerant stream is carried out according to the aperture of electric expansion valve
It is achieved that air conditioning system stores cold-producing medium in high temperature, during low temperature, cold-producing medium reenters system for the continuous control of amount and pressure
Circulation, system run all right, reduces system operation load, beneficial to environmental protection, and improves Consumer's Experience.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of air conditioning system of the present invention
Fig. 2 is the flow chart of air conditioner system control method of the present invention
Reference：1. compressor, 2. cross valve, 3. pressure transducer, 4. outdoor heat exchanger, 5. first throttle assembly,
6. electric expansion valve, 7. fluid reservoir, 8. check valve, 9. the second orifice union, 10. indoor heat exchanger, 11. return-air parts.
Specific embodiment
With reference to Figure of description and embodiment, the specific embodiment of the present invention is described in further detail.With
Lower embodiment is merely to illustrate the present invention, but can not be used for limiting the scope of the present invention.
As shown in figure 1, the air conditioning system of the present invention, including connecting into the compressor 1 in loop, cross valve 2, outdoor heat exchanger
4th, first throttle assembly 5 and indoor heat exchanger 10, described air conditioning system of stating also is included by electric expansion valve 6, fluid reservoir 7, unidirectional
The auxiliary pipeline that valve 8 and the second orifice union 9 are sequentially connected in series, described auxiliary pipeline is parallel to outdoor heat exchanger 4 in described main line
Pipeline between outlet and described indoor heat exchanger 10 entrance；It is provided with pressure transducer 3 in the main line of described air conditioning system, use
To monitor air conditioning system pressure, described air conditioning system is provided with controller (not shown), described controller is passed with temperature respectively
Sensor 41 and electric expansion valve 8 connect, and control the aperture of electric expansion valve 6, described storage for the signal according to temperature sensor
The outlet mouth of pipe of flow container 7 is arranged at the bottom of fluid reservoir 7.
The control method of the air conditioning system of the present invention is as shown in Fig. 2 comprise the following steps：
When air-conditioner runs refrigeration mode, monitor air conditioning system pressure Pd, and judge air conditioning system pressure PdWhether it is more than
System first preset pressure Pds1,
As air conditioning system pressure Pd≤ system first preset pressure Pds1When, controller controls electric expansion valve 6 to cut out, empty
Adjusting system is run by current state and continues to monitor system pressure；
As air conditioning system pressure Pd>System first preset pressure Pds1When, controller controls electric expansion valve 6 to open with default
Degree is opened, and cold-producing medium enters fluid reservoir, then exports through fluid reservoir 7 outlet tube, after flowing through check valve 8 and the second orifice union 0
Get in heat exchanger, and continue to monitor system pressure.
When system second preset pressure Pds2>=air conditioning system pressure Pd>System first preset pressure Pds1When, controller control
Electric expansion valve 6 processed keeps current aperture, and air conditioning system is run by current state and continued to monitor system pressure；
As air conditioning system pressure Pd>System second preset pressure Pds2When, controller controls electric expansion valve 6 with default speed
Degree increases aperture, and continues to monitor system pressure.So circulate, according to system pressure PdRespectively with system first preset pressure
Pds1With the second preset pressure Pds2Compare, controller controls the aperture of electric expansion valve 6 to control entering of fluid reservoir inner refrigerant
Enter and export.
Wherein, described fluid reservoir can be according to the change adjustment storage of air conditioning system pressure or the refrigerant amount of output.
In an embodiment of the present invention, when air conditioning system runs refrigeration mode, the cyclic process of cold-producing medium is：Cold-producing medium warp
Compressor 1 compresses, and flows through cross valve 2 and enters heat exchange in outdoor heat exchanger 4, is changed into after middle temperature high-pressure refrigerant through first throttle
Assembly 5 gets in heat exchange in heat exchanger 10, and the cold-producing medium after heat exchange back flows back into 1 compression in compressor.When pressure exceed pre-
If pressure value P ds1When, controller controls electric expansion valve 6 to open with default aperture, and cold-producing medium stream enters storage through electric expansion valve 6
In flow container 7 (wherein fluid reservoir inlet tube can not go deep in liquid storage tank body, and fluid reservoir outlet need to access liquid storage tank base,
To enable the refrigerant to export in time), then cold-producing medium gets in after individual event valve 8 and the second orifice union 9 throttling and changes
Heat exchange in hot device 10, back flows back into 1 compression in compressor after heat exchange.When system second preset pressure Pds2>=air conditioning system pressure
Pd>System first preset pressure Pds1When, controller controls electric expansion valve 6 to increase aperture with pre-set velocity, makes more to freeze
Agent enters in fluid reservoir 7.When system pressure is again less than equal to preset pressure value Pds1When, controller controls electric expansion valve 6 to close
Close, in fluid reservoir, the cold-producing medium of storage comes back in system through the second orifice union and freezed, and continue to monitor air-conditioning system
System pressure, such loop control.
And then, before air conditioning system brings into operation, need to set scheduled time T in controller0.Alternatively, make a reservation for
Time can be the Default Value of air conditioning system it is also possible to be arranged by User Defined.Thus, when the air conditioning system system of bringing into operation
During chill formula, open monitoring air conditioning system pressure P after the scheduled timed, and judge itself and system first preset pressure and second
Preset pressure is compared, and controller controls the aperture of electric expansion valve 6 to control the into and out of fluid reservoir inner refrigerant.According to
Some specific embodiments of the present invention, the span of the scheduled time can be 0s 60s, and for example, the scheduled time can be
40s, by setting the scheduled time of 40s, can avoid the rate of change that room temperature starts when changing too big, make air-conditioner to Indoor Temperature
The regulation of degree is more gentle, thus improving the comfort level of user to a certain extent.
Air conditioning system provided by the present invention and its control method, when carrying out high-temperature refrigeration, can control air conditioning system to exist
Storage cold-producing medium during high temperature, and carry out the continuous control of cooling system agent flux and pressure according to the aperture of electric expansion valve, real
Show air conditioning system and stored cold-producing medium in high temperature, during low temperature, cold-producing medium has reentered system circulation, system run all right, reduces
System operation load, beneficial to environmental protection, and improves Consumer's Experience.
Embodiment of above is merely to illustrate the present invention, rather than limitation of the present invention.Although with reference to embodiment to this
Bright be described in detail, it will be understood by those within the art that, technical scheme is carried out various combinations,
Modification or equivalent, without departure from the spirit and scope of technical solution of the present invention, the right that all should cover in the present invention will
Ask in the middle of scope.
Claims (9)
1. a kind of air conditioning system, including main line, described main line include connecting into refrigerating circuit or the compressor heating loop,
Outdoor heat exchanger, first throttle assembly and indoor heat exchanger；It is characterized in that, described air conditioning system is also included by electronic expansion
The auxiliary pipeline that valve, fluid reservoir, check valve and the second orifice union are sequentially connected in series, described auxiliary pipeline is parallel to room in described main line
Pipeline between the outlet of external heat exchanger and described indoor heat exchanger entrance.
2. air conditioning system according to claim 1 is it is characterised in that described compressor passes through cross valve and outdoor heat exchange
Device and indoor heat converter connect.
3. air conditioning system according to claim 1 passes it is characterised in that being provided with pressure in the main line of described air conditioning system
Sensor, for monitoring air conditioning system pressure.
4. air conditioning system according to claim 3 is it is characterised in that described air conditioning system is provided with controller, described control
Device is connected with pressure transducer and electric expansion valve respectively, controls opening of electric expansion valve for the signal according to pressure transducer
Degree.
5. air conditioning system according to claim 1 is it is characterised in that the outlet mouth of pipe of described fluid reservoir is arranged at liquid storage
The bottom of tank.
6. the air conditioning system according to claim 1-5 any one is it is characterised in that described compressor air suction mouth is provided with
Return-air part, for preventing from sucking the gas backstreaming of compressor.
7. a kind of control method of the air conditioning system described in any one according to claim 1-6 is it is characterised in that include following
Step：
When air-conditioner runs refrigeration mode, monitor air conditioning system pressure Pd, and judge air conditioning system pressure PdWhether it is more than system
First preset pressure Pds1,
As air conditioning system pressure Pd≤ system first preset pressure Pds1When, controller controls electric expansion valve to cut out, air conditioning system
Run by current state and continue to monitor system pressure；
As air conditioning system pressure Pd>System first preset pressure Pds1When, controller controls electric expansion valve to open with default aperture,
Cold-producing medium enters fluid reservoir, then exports through fluid reservoir outlet tube, gets in and change after flowing through check valve and the second orifice union
Hot device, and continue to monitor system pressure.
8. control method according to claim 7 is it is characterised in that comprise the following steps：
When system second preset pressure Pds2>=air conditioning system pressure Pd>System first preset pressure Pds1When, controller controls electricity
Sub- expansion valve keeps current aperture, and air conditioning system is run by current state and continued to monitor system pressure；
As air conditioning system pressure Pd>System second preset pressure Pds2When, controller controls electric expansion valve to increase with pre-set velocity
Aperture, and continue to monitor system pressure.
9. the control method according to claim 7 or 8 is it is characterised in that described fluid reservoir can be according to air conditioning system pressure
The change adjustment storage of power or the refrigerant amount of output.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075648.0A CN106403413A (en) | 2016-11-25 | 2016-11-25 | Air conditioning system and control method |
| PCT/CN2016/113673 WO2018094844A1 (en) | 2016-11-25 | 2016-12-30 | Air conditioning system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075648.0A CN106403413A (en) | 2016-11-25 | 2016-11-25 | Air conditioning system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106403413A true CN106403413A (en) | 2017-02-15 |
Family
ID=58084477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611075648.0A Pending CN106403413A (en) | 2016-11-25 | 2016-11-25 | Air conditioning system and control method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106403413A (en) |
| WO (1) | WO2018094844A1 (en) |
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| CN107449078A (en) * | 2017-07-26 | 2017-12-08 | 美的集团武汉制冷设备有限公司 | Air-conditioning system, the control device of air-conditioning system and method |
| CN107869864A (en) * | 2017-06-09 | 2018-04-03 | 南京平日制冷科技有限公司 | One kind decompression removes defrosting system |
| CN108019890A (en) * | 2017-12-05 | 2018-05-11 | 珠海格力电器股份有限公司 | Air-conditioning energy efficiency controlling method, device and air-conditioning system |
| CN109612019A (en) * | 2018-11-28 | 2019-04-12 | 宁波奥克斯电气股份有限公司 | A kind of residential central air- unit allocation method and system |
| CN110542235A (en) * | 2019-09-12 | 2019-12-06 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof, and computer-readable storage medium |
| CN111043723A (en) * | 2019-12-30 | 2020-04-21 | Tcl空调器(中山)有限公司 | Air conditioner and control method thereof |
| WO2020224014A1 (en) * | 2019-05-05 | 2020-11-12 | 维谛技术有限公司 | Air-conditioning system |
| CN112413860A (en) * | 2020-11-12 | 2021-02-26 | 珠海格力电器股份有限公司 | Control method and system for air conditioning system of machine room |
| CN112665226A (en) * | 2020-12-15 | 2021-04-16 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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| CN109458744A (en) * | 2018-12-12 | 2019-03-12 | 宁波奥克斯电气股份有限公司 | Air-conditioning refrigeration system and compressor liquid impact prevention method |
| CN113787883B (en) * | 2021-09-07 | 2023-03-24 | 安徽江淮汽车集团股份有限公司 | Air conditioning system and vehicle |
| CN115371308B (en) * | 2022-08-18 | 2023-12-19 | 南京天加环境科技有限公司 | Liquid return prevention air conditioning system and control method |
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| CN107869864A (en) * | 2017-06-09 | 2018-04-03 | 南京平日制冷科技有限公司 | One kind decompression removes defrosting system |
| CN107449078A (en) * | 2017-07-26 | 2017-12-08 | 美的集团武汉制冷设备有限公司 | Air-conditioning system, the control device of air-conditioning system and method |
| CN108019890A (en) * | 2017-12-05 | 2018-05-11 | 珠海格力电器股份有限公司 | Air-conditioning energy efficiency controlling method, device and air-conditioning system |
| CN108019890B (en) * | 2017-12-05 | 2020-09-04 | 珠海格力电器股份有限公司 | Air conditioner energy efficiency control method and device and air conditioner system |
| CN109612019A (en) * | 2018-11-28 | 2019-04-12 | 宁波奥克斯电气股份有限公司 | A kind of residential central air- unit allocation method and system |
| WO2020224014A1 (en) * | 2019-05-05 | 2020-11-12 | 维谛技术有限公司 | Air-conditioning system |
| CN110542235A (en) * | 2019-09-12 | 2019-12-06 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof, and computer-readable storage medium |
| CN110542235B (en) * | 2019-09-12 | 2021-03-02 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof, and computer-readable storage medium |
| CN111043723A (en) * | 2019-12-30 | 2020-04-21 | Tcl空调器(中山)有限公司 | Air conditioner and control method thereof |
| CN112413860A (en) * | 2020-11-12 | 2021-02-26 | 珠海格力电器股份有限公司 | Control method and system for air conditioning system of machine room |
| CN112665226A (en) * | 2020-12-15 | 2021-04-16 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN112665226B (en) * | 2020-12-15 | 2024-04-12 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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| Publication number | Publication date |
|---|---|
| WO2018094844A1 (en) | 2018-05-31 |
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