CN107238222A - Air-conditioning system and its control method - Google Patents
Air-conditioning system and its control method Download PDFInfo
- Publication number
- CN107238222A CN107238222A CN201710347674.2A CN201710347674A CN107238222A CN 107238222 A CN107238222 A CN 107238222A CN 201710347674 A CN201710347674 A CN 201710347674A CN 107238222 A CN107238222 A CN 107238222A
- Authority
- CN
- China
- Prior art keywords
- flow path
- air
- heat exchanger
- conditioning system
- electrically
- 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.)
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a kind of air-conditioning system and its control method.Air-conditioning system, including compressor, outdoor heat exchanger, throttling arrangement and the indoor heat exchanger linked together for forming coolant loop, outdoor heat exchanger is provided with the first flow path and second flow path flowed through for cooling matchmaker, first flow path and second flow path are arranged in parallel, first flow path and second flow path are connected between compressor and throttling arrangement, and electrically-controlled valve has also been arranged in series in second flow path.When being freezed at low ambient temperatures, second flow path can be blocked by electrically-controlled valve, thus equivalent to the heat exchange area and heat exchange amount for reducing outdoor heat exchanger, so as to meet at low ambient temperatures, outdoor heat exchanger and indoor heat exchanger matched are realized, the heat exchange amount of whole system is adjusted, cooling system load is set to reach balance, indoor heat exchanger occurs without frost, realizes that air-conditioning system is carried out continuously refrigeration at low ambient temperatures, to improve user experience.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air-conditioning system and its control method.
Background technology
At present, air-conditioning is the household electrical appliance commonly used in people's daily life, and generally, air-conditioning is warmmer in external environment
Under the conditions of carry out refrigeration cool-down, and in external environment compared with carrying out heating heating under cool condition.And under special circumstances, it is necessary to air-conditioning
Carry out refrigerating operaton at low ambient temperatures, at this moment, because heat transfer effect is good, operation of air conditioner for a period of time after, can side indoors
Occurs frost on heat exchanger, now, the compressor operating stopped in outdoor unit is carried out defrost processing by air-conditioning.Actually make
During, frequent start-stop so, influence air-conditioning is continuously run, causes user experience relatively low by air-conditioner outdoor unit.How
A kind of air-conditioning system that can be carried out continuously cryogenic refrigeration to improve user experience of design is technology to be solved by this invention
Problem.
The content of the invention
The invention provides a kind of air-conditioning system and its control method, realize that air-conditioning system is carried out continuously at low ambient temperatures
Refrigeration, to improve user experience.
To reach above-mentioned technical purpose, the present invention is realized using following technical scheme：
A kind of air-conditioning system, including link together to form compressor, outdoor heat exchanger, the throttling arrangement of coolant loop
And indoor heat exchanger, the outdoor heat exchanger is provided with the first flow path and second flow path flowed through for cooling matchmaker, described first
Stream and the second flow path are arranged in parallel, and the first flow path and the second flow path are connected to the compressor and institute
State between throttling arrangement, electrically-controlled valve has also been arranged in series in the second flow path.
Further, the electrically-controlled valve is arranged in series between the second flow path and the throttling arrangement.
Further, the electrically-controlled valve is arranged in series between the second flow path and the compressor.
Further, the first flow path is provided with a plurality of the first subflow road being arranged in parallel, and the second flow path is set
There is a plurality of the second subflow road being arranged in parallel.
Further, the first subflow road and the second subflow road alternate intervals arrangement.
The present invention also provides a kind of control method of above-mentioned air-conditioning system, including：It is less than when detecting ambient temperature
During the first set temperature value or when the coil temperature of indoor heat exchanger is less than the second set temperature value, close electrically-controlled valve to block the
Two streams.
Further, in addition to：Control the outdoor fan reduction rotating speed of air-conditioning system outside.
Further, in addition to：The indoor fan of air-conditioning system indoor is controlled to improve rotating speed.
Compared with prior art, advantages and positive effects of the present invention are：By in the second flow path of outdoor heat exchanger
Series connection electrically-controlled valve, the break-make of second flow path can be controlled by electrically-controlled valve, so in actual moving process, when in low temperature environment
It is lower when being freezed, second flow path can be blocked by electrically-controlled valve, thus equivalent to the heat exchange for reducing outdoor heat exchanger
Area and heat exchange amount, so as to meet at low ambient temperatures, realize outdoor heat exchanger and indoor heat exchanger matched, adjust whole
The heat exchange amount of individual system, makes cooling system load reach balance, and indoor heat exchanger occurs without frost, realizes air-conditioning system
Refrigeration is carried out continuously at low ambient temperatures, to improve user experience.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram one of air-conditioning system embodiment of the present invention;
Fig. 2 is the schematic diagram two of air-conditioning system embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As Figure 1-Figure 2, the present embodiment air-conditioning system, including link together to form the compression of coolant loop
Machine 1, outdoor heat exchanger 2, throttling arrangement 3 and indoor heat exchanger 4, the outdoor heat exchanger 2 are provided with what is flowed through for cooling matchmaker
First flow path 21 and second flow path 22, the first flow path 21 and the second flow path 22 are arranged in parallel, the first flow path 21
And the second flow path 22 is connected between the compressor 1 and the throttling arrangement 3, also gone here and there in the second flow path 22
Connection is provided with electrically-controlled valve 5.
Specifically, the first flow path 21 in the present embodiment air-conditioning system in outdoor heat exchanger 2 was run in air-conditioning system
All the time channel status is in journey, and second flow path 22 is then controlled its break-make by electrically-controlled valve 5 as needed.Specifically, normal
When freezing under rule operating mode, the control of electrically-controlled valve 5 second flow path 22 is open-minded, and refrigerant is flowed into first flow path 21 and the second simultaneously
In road 22, and when freezing at low ambient temperatures, then according to running status electrically-controlled valve 5 can be controlled to close second flow path 22, this
Sample, just can reduce the heat exchange area of outdoor heat exchanger 2, reduce the overall heat exchange amount of system, so as to avoid indoor heat exchange
Frosting occurs for device 4.
Wherein, it can be operated for electrically-controlled valve 5 using stop valve, electrically-controlled valve 5 can be arranged in series in described
Between two streams 22 and the throttling arrangement 3；Or, electrically-controlled valve 5 is arranged in series in the second flow path 22 and the compressor 1
Between, the break-make of second flow path 22 just can be so controlled by electrically-controlled valve 5.
In addition, the heat exchange area in order to make full use of outdoor heat exchanger 2, first flow path 21 is provided with a plurality of be arranged in parallel
First subflow road, the second flow path 22 is provided with a plurality of the second subflow road being arranged in parallel, it is preferred that the first subflow road
With the second subflow road alternate intervals arrangement.Specifically, a plurality of subflow road is able to ensure that refrigerant is evenly distributed in outdoor and changed
The heat exchange surface of hot device 2, and the first subflow road and the second subflow road alternate intervals are arranged, under cryogenic refrigeration operating mode,
First flow path 21 is sufficiently exchanged heat using the heat exchange area of outdoor heat exchanger 2, it is ensured that under cryogenic refrigeration operating mode
Refrigeration requirement.
A kind of control method is provided present invention is alternatively directed to above-mentioned air-conditioning system, including：When detecting ambient temperature
During less than the first set temperature value or indoor heat exchanger coil temperature be less than the second set temperature value when, close electrically-controlled valve with cut
Disconnected second flow path.Specifically, when being freezed under low temperature environment, if detecting ambient temperature less than the first design temperature
During value or when the coil temperature of indoor heat exchanger is less than the second set temperature value, illustrate on indoor heat exchanger easily generation frosting,
Now, just control electrically-controlled valve closes second flow path；And when outdoor circumstance temperature or indoor coil pipe rise to preset temperature point, electricity
Control valve to open, system recovers normal operation.It is preferred that, during cryogenic refrigeration, air-conditioning system outside can also be controlled
Outdoor fan reduces rotating speed, and controls the indoor fan of air-conditioning system indoor to improve rotating speed, and indoor heat exchanger obtains bigger
Wind-force, the further release for accelerating indoor heat exchanger cold, to ensure that frosting does not occur for indoor heat exchanger, meanwhile, outdoor is changed
Hot device obtains less wind-force, weakens the heat exchange amount of outdoor heat exchanger, balance is reached with the maximized cooling system load that meets,
Ensure that outdoor heat exchanger occurs without frost, realize that air-conditioning system is continuously run
It is illustrated below：
As shown in figure 1, air-conditioning system is divided under 4 streams, conventional refrigerant state, electrically-controlled valve is opened, refrigerant flow direction as illustrated,
Per all being exchanged heat all the way, the requirement of cooling load is met.As shown in Fig. 2 operating mode is reduced, according to outer circumstance temperature and indoor set coil pipe
Temperature, into cryogenic refrigeration operational mode, meanwhile, the adjustment parameter such as internal-external machine wind speed, electrically-controlled valve is closed, by closing two articles the
Two subflow roads, adjust the heat exchange amount of whole system, cooling system load is reached balance, and indoor heat exchanger occurs without frosting and showed
As realization is continuously run.When outdoor circumstance temperature or indoor coil pipe rise to preset temperature point, stop valve is opened, and system is extensive
Multiple normal operation.
Compared with prior art, advantages and positive effects of the present invention are：By in the second flow path of outdoor heat exchanger
Series connection electrically-controlled valve, the break-make of second flow path can be controlled by electrically-controlled valve, so in actual moving process, when in low temperature environment
It is lower when being freezed, second flow path can be blocked by electrically-controlled valve, thus equivalent to the heat exchange for reducing outdoor heat exchanger
Area and heat exchange amount, so as to meet at low ambient temperatures, realize outdoor heat exchanger and indoor heat exchanger matched, adjust whole
The heat exchange amount of individual system, makes cooling system load reach balance, and indoor heat exchanger occurs without frost, realizes air-conditioning system
Refrigeration is carried out continuously at low ambient temperatures, to improve user experience.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modifications or replace, do not make appropriate technical solution essence depart from the present invention embodiment technical scheme spirit and
Scope.
Claims (8)
1. a kind of air-conditioning system, including link together to form the compressor, outdoor heat exchanger, throttling dress of coolant loop
Put and indoor heat exchanger, it is characterised in that the outdoor heat exchanger is provided with the first flow path flowed through for cooling matchmaker and second
Stream, the first flow path and the second flow path are arranged in parallel, and the first flow path and the second flow path are connected to
Between the compressor and the throttling arrangement, electrically-controlled valve has also been arranged in series in the second flow path.
2. air-conditioning system according to claim 1, it is characterised in that the electrically-controlled valve is arranged in series in the second flow path
Between the throttling arrangement.
3. air-conditioning system according to claim 1, it is characterised in that the electrically-controlled valve is arranged in series in the second flow path
Between the compressor.
4. air-conditioning system according to claim 1, it is characterised in that the first flow path is provided with a plurality of be arranged in parallel
First subflow road, the second flow path is provided with a plurality of the second subflow road being arranged in parallel.
5. air-conditioning system according to claim 4, it is characterised in that the first subflow road and the second subflow road are handed over
For arranged for interval.
6. a kind of control method of any described air-conditioning systems of claim 1-5, it is characterised in that including：It is outer when detecting
Boundary's environment temperature be less than the first set temperature value when or indoor heat exchanger coil temperature be less than the second set temperature value when, close
Electrically-controlled valve is to block second flow path.
7. the control method of air-conditioning system according to claim 6, it is characterised in that also include：Control air-conditioning system room
The outdoor fan reduction rotating speed in outside.
8. the control method of air-conditioning system according to claim 6, it is characterised in that also include：Control air-conditioning system room
The indoor fan of inner side improves rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347674.2A CN107238222A (en) | 2017-05-17 | 2017-05-17 | Air-conditioning system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347674.2A CN107238222A (en) | 2017-05-17 | 2017-05-17 | Air-conditioning system and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107238222A true CN107238222A (en) | 2017-10-10 |
Family
ID=59984337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710347674.2A Pending CN107238222A (en) | 2017-05-17 | 2017-05-17 | Air-conditioning system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107238222A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207273A (en) * | 2019-06-14 | 2019-09-06 | 广东美的暖通设备有限公司 | Outdoor heat exchanger, refrigeration system, air conditioner, progress control method and device |
| CN111121242A (en) * | 2019-12-26 | 2020-05-08 | 宁波奥克斯电气股份有限公司 | Adjusting method and device for operating parameters of air conditioning system and air conditioning system |
| CN114484745A (en) * | 2022-03-01 | 2022-05-13 | 青岛海尔空调器有限总公司 | Control method and control system for defrosting of air conditioner, electronic equipment and storage medium |
| CN114543402A (en) * | 2022-03-23 | 2022-05-27 | 广东美的制冷设备有限公司 | Heat exchanger, heat exchanger flow path control method, readable storage medium and air conditioner |
| CN114608220A (en) * | 2022-03-23 | 2022-06-10 | 西安交通大学 | Heat exchanger, heat exchanger flow path control method, readable storage medium and air conditioner |
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| JP2014149141A (en) * | 2013-02-04 | 2014-08-21 | Daikin Ind Ltd | Freezer |
| CN205373132U (en) * | 2015-12-29 | 2016-07-06 | Tcl空调器(中山)有限公司 | Indoor temperature regulation and control system and air conditioner |
| CN106524399A (en) * | 2016-10-31 | 2017-03-22 | 芜湖美智空调设备有限公司 | Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner |
| CN106595105A (en) * | 2015-10-19 | 2017-04-26 | Lg电子株式会社 | Air conditioner |
| CN106940071A (en) * | 2017-03-24 | 2017-07-11 | 青岛海尔空调器有限总公司 | Air-conditioning device and its control method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014149141A (en) * | 2013-02-04 | 2014-08-21 | Daikin Ind Ltd | Freezer |
| CN106595105A (en) * | 2015-10-19 | 2017-04-26 | Lg电子株式会社 | Air conditioner |
| CN205373132U (en) * | 2015-12-29 | 2016-07-06 | Tcl空调器(中山)有限公司 | Indoor temperature regulation and control system and air conditioner |
| CN106524399A (en) * | 2016-10-31 | 2017-03-22 | 芜湖美智空调设备有限公司 | Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner |
| CN106940071A (en) * | 2017-03-24 | 2017-07-11 | 青岛海尔空调器有限总公司 | Air-conditioning device and its control method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207273A (en) * | 2019-06-14 | 2019-09-06 | 广东美的暖通设备有限公司 | Outdoor heat exchanger, refrigeration system, air conditioner, progress control method and device |
| CN111121242A (en) * | 2019-12-26 | 2020-05-08 | 宁波奥克斯电气股份有限公司 | Adjusting method and device for operating parameters of air conditioning system and air conditioning system |
| CN111121242B (en) * | 2019-12-26 | 2022-06-14 | 宁波奥克斯电气股份有限公司 | Adjusting method and device for operating parameters of air conditioning system and air conditioning system |
| CN114484745A (en) * | 2022-03-01 | 2022-05-13 | 青岛海尔空调器有限总公司 | Control method and control system for defrosting of air conditioner, electronic equipment and storage medium |
| CN114484745B (en) * | 2022-03-01 | 2024-01-16 | 青岛海尔空调器有限总公司 | Control method and control system for defrosting of air conditioner, electronic equipment and storage medium |
| CN114543402A (en) * | 2022-03-23 | 2022-05-27 | 广东美的制冷设备有限公司 | Heat exchanger, heat exchanger flow path control method, readable storage medium and air conditioner |
| CN114608220A (en) * | 2022-03-23 | 2022-06-10 | 西安交通大学 | Heat exchanger, heat exchanger flow path control method, readable storage medium and air conditioner |
| CN114608220B (en) * | 2022-03-23 | 2024-03-26 | 西安交通大学 | Heat exchanger, heat exchanger flow path control method, readable storage medium and air conditioner |
| CN114543402B (en) * | 2022-03-23 | 2024-05-28 | 广东美的制冷设备有限公司 | Heat exchanger, heat exchanger flow path control method, readable storage medium and air conditioner |
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Application publication date: 20171010 |