CN106705496A - Micro-channel air conditioner and control method thereof - Google Patents
Micro-channel air conditioner and control method thereof Download PDFInfo
- Publication number
- CN106705496A CN106705496A CN201611163072.3A CN201611163072A CN106705496A CN 106705496 A CN106705496 A CN 106705496A CN 201611163072 A CN201611163072 A CN 201611163072A CN 106705496 A CN106705496 A CN 106705496A
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- Prior art keywords
- heat exchanger
- compressor
- pressure value
- pipeline
- flow path
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Classifications
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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
- F25B39/00—Evaporators; 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention relates to the technical field of air conditioning and discloses a micro-channel air conditioner. The micro-channel air conditioner comprises a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger which are connected through pipelines to form a refrigerating circuit or a heating circuit. The micro-channel air conditioner further comprises a bypass flow path; the first end of the bypass flow path is connected with the pipeline between the compressor and the outdoor heat exchanger, and the second end of the bypass flow path is connected with the pipeline between the throttling device and the indoor heat exchanger or is connected with the pipeline between the outdoor heat exchanger and the throttling device; the bypass flow path is provided with an adjusting valve for adjusting the refrigerant flow; and the outdoor heat exchanger is a micro-channel heat exchanger. By means of the micro-channel air conditioner, the discharge pressure of the compressor can be reduced, and the compressor can be started successfully. The invention further discloses a control method of the micro-channel air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of microchannel air-conditioner and its control method.
Background technology
Current outside is micro-channel heat exchanger, and indoor is the air-conditioner set of copper pipe fin type heat exchanger, particularly singly
Cold to determine frequency air conditioning unit device, during cooling activation, due to micro-channel condenser, its inner passage is small, and resistance is big, leads
The circulation of HTHP refrigerant is caused to have some setbacks, so that the staring torque of compressor is excessive, it is easy to cause the compressor cannot normally to open
The protection of dynamic or hypertonia.Also some air-conditioner sets at condensator outlet by being designed with high pressure fluid reservoir, but it has
Shi Weibi can be effective, while cost is higher.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is how to ensure that air-conditioner compressor in refrigeration in microchannel can be opened smoothly
It is dynamic, it is to avoid compressor start torque is excessive or protects situation about shutting down.
(2) technical scheme
In order to solve the above-mentioned technical problem, the present invention provides a kind of microchannel air-conditioner, including the pressure connected by pipeline
Contracting machine, outdoor heat exchanger, throttling arrangement and indoor heat exchanger, to constitute refrigerating circuit or heat loop, also flow including bypass
Road, the pipeline connection between the first end of the bypass flow path and the compressor and outdoor heat exchanger, the bypass flow path
Between second end and the throttling arrangement and indoor heat exchanger pipeline connection, or the bypass flow path the second end and the room
Pipeline connection between external heat exchanger and throttling arrangement；The bypass flow path is provided with the regulating valve of adjusting refrigerant flow rate；Institute
Outdoor heat exchanger is stated for micro-channel heat exchanger.
Wherein, also including pressure sensor and controller, the pressure sensor is used to detect the pressure at expulsion of compressor,
The controller is used to be controlled according to the pressure at expulsion of compressor the aperture of the regulating valve.
Wherein, the regulating valve can be variable-flow formula magnetic valve.
Wherein, the indoor heat exchanger is copper pipe fin type heat exchanger.
Wherein, the compressor is connected with the indoor heat exchanger and outdoor heat exchanger respectively by reversal valve, to realize
Refrigerating circuit and heat the switching in loop.
Wherein, gas-liquid separator can be provided between the reversal valve and the return line of compressor.
Wherein, the pipeline between the outdoor heat exchanger and throttling arrangement be provided with filter and/or the throttling arrangement with
Pipeline between indoor heat exchanger is provided with filter.
The present invention also provides a kind of control method of microchannel air-conditioner, and it comprises the following steps：
S1, air-conditioning start, when power on mode is refrigeration mode, regulating valve is opened, and compressor is opened and runs first and sets
Fix time；
S2, the exhaust pressure value for obtaining compressor, if exhaust pressure value is less than or equal to the first preset pressure value, are adjusted
Valve is closed, if exhaust pressure value is more than the first preset pressure value and less than the second preset pressure value, control valve opening is progressively
Reduce until close, if exhaust pressure value is more than or equal to the second preset pressure value, keep regulating valve to open, wherein, described the
One preset pressure value is less than the second preset pressure value；
After S3, compressor continue to run with the second setting time, step S2 is performed.
(3) beneficial effect
Compared with prior art, the present invention has advantages below：
A kind of microchannel air-conditioner and its control method that the present invention is provided, wherein, the microchannel air-conditioner is by setting
Bypass flow path is put, in cooling mode during compressor start, the part HTHP that bypass flow path can discharge compressor
In pipeline where refrigerant gas guiding to indoor heat exchanger or throttling arrangement, avoid that aperture is small, the big outdoor heat exchange of resistance
Device, so as to reduce the pressure at expulsion of compressor, realizes that compressor smoothly starts.
Brief description of the drawings
Fig. 1 is a kind of integrated connection schematic diagram of microchannel air-conditioner of the invention；
In figure：1：Compressor；2：Reversal valve；3：Outdoor heat exchanger；4：Outer blower fan；5：Filter；6：Throttling arrangement；7：It is interior
Blower fan；8：Indoor heat exchanger；9：Gas-liquid separator；10：Pressure sensor；11：Regulating valve.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the invention, it is necessary to explanation, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score,
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of and describes the present invention and simplify to describe, rather than instruction or dark
Showing the device or element of meaning must have specific orientation, with specific azimuth configuration and operation therefore it is not intended that right
Limitation of the invention.Additionally, term " first ", " second ", " the 3rd " etc. be only used for describe purpose, and it is not intended that indicate or
Imply relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As shown in figure 1, be a kind of microchannel air-conditioner for providing of the present invention, including the compressor 1, room connected by pipeline
External heat exchanger 3, throttling arrangement 6 and indoor heat exchanger 8, to constitute refrigerating circuit or heat loop, wherein, the outdoor heat exchange
Device 3 be micro-channel heat exchanger, in embodiments of the invention, the compressor 1 by reversal valve 2 respectively with the indoor heat exchanger
8 and outdoor heat exchanger 3 connect, the preferred four-way reversing valve 2 of the reversal valve 2, the flow direction for switching refrigerant realizes air-conditioner
Refrigerating circuit and heat the switching in loop, it also includes bypass flow path, the first end of the bypass flow path and the compressor 1 and
Between outdoor heat exchanger 3 pipeline connection, some refrigerant gas distribution that compressor 1 is discharged out, to reduce compression
The pressure at expulsion of machine 1, the second end of the bypass flow path and the pipeline between the throttling arrangement 6 and indoor heat exchanger 8 are connected,
The preferred copper pipe fin type heat exchanger of indoor heat exchanger 8, its aperture is big, directs the refrigerant into the place pipeline of indoor heat exchanger 8, makes
Cryogen circulation is smooth, or the second end of the bypass flow path can also be with the pipe between the outdoor heat exchanger 3 and throttling arrangement 6
Road is connected, and refrigerant gas are guided into the pipeline between throttling arrangement 6 and outdoor heat exchanger 3, the refrigerant gas of HTHP
Throttling by throttling arrangement 6 is lowered the temperature, and can reduce the temperature and pressure of high temperature refrigerant gas, the refrigerant after decrease temperature and pressure
Indoor heat exchanger 8 is flowed into again, and the influence to air conditioner refrigeration effect is reduced as far as possible；By tapped refrigerant so that some refrigerant
Outdoor heat exchanger 3 is got around, so as to ensure that compressor 1 can smoothly start, it is to avoid the staring torque of compressor 1 is excessive or protection stops
Machine, the bypass flow path is provided with the regulating valve 11 of adjusting refrigerant flow rate.
Specifically, in embodiments of the invention, also including pressure sensor 10 and controller, the pressure sensor 10 can
To be directly welded on the gas exhaust piping of compressor 1, the pressure at expulsion for detecting compressor 1, the controller is used for basis
The pressure at expulsion of compressor 1 controls the aperture of the regulating valve 11.
Wherein, the regulating valve 11 can be variable-flow formula magnetic valve, such as electric expansion valve.
Wherein, gas-liquid separator 9 can be provided between the return line of the reversal valve 2 and compressor 1, for muffler
Refrigerant air-liquid in road is separated.
Wherein, the pipeline between the outdoor heat exchanger 3 and throttling arrangement 6 is provided with filter 5, for impurity screening, and/
Or the pipeline between the throttling arrangement 6 and indoor heat exchanger 8 can also be provided with filter 5, for absorbing vapor.
The present invention also provides a kind of control method of microchannel air-conditioner, and it comprises the following steps：
S1, air-conditioning start, when power on mode is refrigeration mode, regulating valve 11 opens maximum opening, and compressor 1 is opened,
And run the first setting time about six minutes；
S2, the exhaust pressure value for obtaining compressor, if exhaust pressure value is less than or equal to the first preset pressure value, are adjusted
Valve 11 is closed, if exhaust pressure value is more than the first preset pressure value and less than the second preset pressure value, the aperture of regulating valve 11
Progressively reduce and closed when exhaust pressure value is less than or equal to the first preset pressure value, if exhaust pressure value is more than or equal to second
Preset pressure value, keeps regulating valve to open, wherein, first preset pressure value is less than the second preset pressure value, and first presets
Pressure value is different according to refrigerant category with the second preset pressure value, different, and general first preset pressure value is for R410A
Refrigerant is 3.6Mpa, and R22 refrigerants are 2.8Mpa, and general second preset pressure value is 3.8Mpa, R22 refrigerants for R410A refrigerants
It is 3.0Mpa；
After S3, compressor 1 continue to run with the second setting time about three minutes, step S2 is performed.
The specific workflow of the embodiment of the present invention is：During refrigeration, the discharge high temperature and high pressure gas refrigerant of compressor 1 is flowed through
Four-way valve, into outdoor heat exchanger 3, by the rotation of outer blower fan 4, drives the high temperature and high pressure gas in cooling medium air and pipe
Refrigerant is exchanged heat, and refrigerant is cooled to the refrigerant of medium temperature and medium pressure, flows through filter 5, is throttled by electric expansion valve, is become
The refrigerant of the vehicle repair major of low-temp low-pressure, passes through another filter 5, enters into the copper pipe fin type heat exchanger of indoor
In, inner blower 7 drives the hot-air of interior and the vehicle repair major refrigerant of low-temp low-pressure in pipe to be exchanged heat so that Interior Space temperature
Degree declines, while after the refrigerant heat absorption in pipe is evaporated, flowing through four-way valve, into gas-liquid separator 9, returning compressor 1 is carried out
Circulation, it is the flow direction of refrigerant that arrow is signified in figure；To ensure the smooth startup of compressor 1, according to above-mentioned control method
Operated.
As can be seen from the above embodiments, the present invention ensure that compressor smoothly starts, it is to avoid compressor start torque
Excessive or protection is shut down.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (8)
1. a kind of microchannel air-conditioner, including compressor, outdoor heat exchanger, throttling arrangement and the indoor heat exchange connected by pipeline
Device, to constitute refrigerating circuit or heat loop, it is characterised in that also including bypass flow path, the first end of the bypass flow path
It is connected with the pipeline between the compressor and outdoor heat exchanger, the second end and the throttling arrangement and the room of the bypass flow path
Between interior heat exchanger pipeline connection, or the bypass flow path the second end and the outdoor heat exchanger and throttling arrangement between
Pipeline is connected；The bypass flow path is provided with the regulating valve of adjusting refrigerant flow rate；The outdoor heat exchanger is Thermal Performance of Micro Channels
Device.
2. microchannel air-conditioner according to claim 1, it is characterised in that also including pressure sensor and controller, institute
Pressure sensor is stated for detecting the pressure at expulsion of compressor, the controller is used to control institute according to the pressure at expulsion of compressor
State the aperture of regulating valve.
3. microchannel air-conditioner according to claim 2, it is characterised in that the regulating valve is variable-flow formula magnetic valve.
4. microchannel air-conditioner according to claim 1, it is characterised in that the indoor heat exchanger is changed for copper pipe fin type
Hot device.
5. microchannel air-conditioner according to claim 1, it is characterised in that the compressor by reversal valve respectively with institute
Indoor heat exchanger and outdoor heat exchanger connection are stated, with the switching realized refrigerating circuit and heat loop.
6. microchannel air-conditioner according to claim 5, it is characterised in that the return line of the reversal valve and compressor
Between be provided with gas-liquid separator.
7. the microchannel air-conditioner according to claim any one of 1-6, it is characterised in that the outdoor heat exchanger and throttling
The pipeline that pipeline between device is provided between filter and/or the throttling arrangement and indoor heat exchanger is provided with filter.
8. a kind of control method of microchannel air-conditioner, it is characterised in that comprise the following steps：
S1, air-conditioning start, when power on mode is refrigeration mode, regulating valve is opened, when compressor is opened and runs the first setting
Between；
S2, the exhaust pressure value for obtaining compressor, if exhaust pressure value is less than or equal to the first preset pressure value, regulating valve is closed
Close, if exhaust pressure value is more than the first preset pressure value and less than the second preset pressure value, control valve opening progressively reduces
Until closing, if exhaust pressure value is more than or equal to the second preset pressure value, regulating valve is kept to open, wherein, described first is pre-
If pressure value is less than the second preset pressure value；
After S3, compressor continue to run with the second setting time, step S2 is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163072.3A CN106705496A (en) | 2016-12-15 | 2016-12-15 | Micro-channel air conditioner and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163072.3A CN106705496A (en) | 2016-12-15 | 2016-12-15 | Micro-channel air conditioner and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106705496A true CN106705496A (en) | 2017-05-24 |
Family
ID=58937864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611163072.3A Pending CN106705496A (en) | 2016-12-15 | 2016-12-15 | Micro-channel air conditioner and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145843A (en) * | 2019-04-19 | 2019-08-20 | 青岛海尔空调器有限总公司 | Air conditioner and its control method |
| CN110351987A (en) * | 2019-07-15 | 2019-10-18 | 珠海格力电器股份有限公司 | Radiator, controller, photovoltaic electric equipment and radiating method |
| CN111665876A (en) * | 2019-03-07 | 2020-09-15 | 隆基绿能科技股份有限公司 | Method and device for processing furnace pressure abnormity and storage medium |
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| CN1645016A (en) * | 2005-01-27 | 2005-07-27 | 广东科龙电器股份有限公司 | High temperature self-adaption separated air conditioners |
| CN101788214A (en) * | 2009-12-18 | 2010-07-28 | 艾默生网络能源有限公司 | Air conditioning condenser |
| CN204854060U (en) * | 2015-03-05 | 2015-12-09 | 开平市高美空调设备有限公司 | Cooling water set |
| CN206291522U (en) * | 2016-12-15 | 2017-06-30 | 广州华凌制冷设备有限公司 | A kind of microchannel air-conditioner |
-
2016
- 2016-12-15 CN CN201611163072.3A patent/CN106705496A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1645016A (en) * | 2005-01-27 | 2005-07-27 | 广东科龙电器股份有限公司 | High temperature self-adaption separated air conditioners |
| CN101788214A (en) * | 2009-12-18 | 2010-07-28 | 艾默生网络能源有限公司 | Air conditioning condenser |
| CN204854060U (en) * | 2015-03-05 | 2015-12-09 | 开平市高美空调设备有限公司 | Cooling water set |
| CN206291522U (en) * | 2016-12-15 | 2017-06-30 | 广州华凌制冷设备有限公司 | A kind of microchannel air-conditioner |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665876A (en) * | 2019-03-07 | 2020-09-15 | 隆基绿能科技股份有限公司 | Method and device for processing furnace pressure abnormity and storage medium |
| CN110145843A (en) * | 2019-04-19 | 2019-08-20 | 青岛海尔空调器有限总公司 | Air conditioner and its control method |
| CN110145843B (en) * | 2019-04-19 | 2021-01-29 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN110351987A (en) * | 2019-07-15 | 2019-10-18 | 珠海格力电器股份有限公司 | Radiator, controller, photovoltaic electric equipment and radiating method |
| CN110351987B (en) * | 2019-07-15 | 2024-02-23 | 珠海格力电器股份有限公司 | Radiator, controller, photovoltaic electric equipment and radiating method |
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