CN103574857B - A kind of frequency-conversion air-conditioning system and control method thereof - Google Patents
A kind of frequency-conversion air-conditioning system and control method thereof Download PDFInfo
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- CN103574857B CN103574857B CN201310510479.9A CN201310510479A CN103574857B CN 103574857 B CN103574857 B CN 103574857B CN 201310510479 A CN201310510479 A CN 201310510479A CN 103574857 B CN103574857 B CN 103574857B
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Abstract
The invention discloses a kind of frequency-conversion air-conditioning system and control method thereof.It includes main coolant loop, it is provided with compressor, four-way change-over valve, outdoor heat exchanger and indoor heat exchanger on described main coolant loop, also include controller cooling loop, described controller cooling one end, loop is connected with the outlet of described outdoor heat exchanger, and the other end is connected with the air entry of described compressor.The present invention can efficiently, reliability service.
Description
Technical field
The invention belongs to air-conditioner field, particularly relate to a kind of frequency-conversion air-conditioning system and control method thereof.
Background technology
Existing transducer air conditioning, its compressor frequency range of operation is typically 20～90Hz, along with outdoor environment temperature
Continuous rising, air conditioner load adds high-power increase, causes controller power constantly to raise, and controller module temperature the most constantly rises
Height, even up to more than 105 DEG C, controller heating temp limits the high-frequency operation of compressor, and refrigerating capacity now (or
Heating capacity) demand the biggest, the impact that therefore refrigerating capacity (or heating capacity) is not enough is the most prominent.
Further, air-conditioner outdoor unit installation environment also has higher requirement, air-conditioner outdoor unit installation environment to need to ventilate
Smooth and easy, avoid the environment such as dust and greasy dirt, and actually used in, along with air-conditioning uses the time elongated, outdoor finned heat exchanger meeting
Being covered by dust, under hot weather, due to the bad faults frequent being easily caused convertible frequency air-conditioner that dispels the heat, air-conditioning does not freezes or fault
Stoppage protection.
Summary of the invention
The present invention mainly provides a kind of frequency-conversion air-conditioning system and control method thereof, can efficient, reliability service.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals: a kind of convertible frequency air-conditioner system
System, including main coolant loop, described main coolant loop is provided with compressor, four-way change-over valve, outdoor heat exchanger and indoor and changes
Hot device, also includes that controller cooling loop, described controller cooling one end, loop are connected with the outlet of described outdoor heat exchanger,
The other end is connected with the air entry of described compressor.
As preferably, the cooling of described controller is provided with the frequency conversion radiator for dispelling the heat to controller on loop, described
Frequency conversion radiator includes frequency-variable controller heat exchanger and the frequency-variable controller matched with described frequency-variable controller heat exchanger
Blower fan.
As preferably, described controller cooling loop is additionally provided with the throttling for controlling described controller cooling loop
Device.Throttling arrangement is for controlling the break-make in controller cooling loop.
As preferably, described throttling arrangement is electromagnetic throttle valve.
As preferably, described frequency-conversion air-conditioning system include detection frequency conversion radiator coil temperature radiator sensor,
And detect the radiator outlet sensor of the outlet temperature of described frequency conversion radiator.
As preferably, connect between described outdoor heat exchanger and indoor heat exchanger and have first throttle valve, described first throttle
The outlet of valve is also connected with described controller cooling loop.I.e. controller cooling one end, loop divides two-way with main coolant loop even
Connecing, a road is connected on the pipeline between outdoor heat exchanger and first throttle valve, and another road is connected to first throttle valve and indoor
On pipeline between heat exchanger, thus the effect in controller cooling loop can be ensured under refrigeration and heating mode simultaneously.
As preferably, between described controller cooling loop and described outdoor heat exchanger, it is provided with the second check valve, described
It is provided with the 3rd check valve between the outlet of first throttle valve and described controller cooling loop.
As preferably, described first throttle valve two ends are connected to the first filter and the second filter.
As preferably, described frequency-conversion air-conditioning system includes detecting the exhaust sensor of compressor exhaust temperature, detection compression
The return-air sensor of machine suction temperature, the detection outdoor sensor of outdoor environment temperature, sensing chamber's external heat exchanger coil temperature
Outdoor coil pipe used sensor, the indoor heat exchanger inlet sensor of detection indoor heat exchanger inlet temperature, detection indoor heat exchanger dish
Heat exchanger exit in the indoor heat exchanger coil pipe sensor of pipe temperature, the interior sensor of detection indoor environment temperature and sensing chamber
The indoor heat exchanger exit sensor of temperature.
The control method of a kind of frequency-conversion air-conditioning system as claimed in claim 1, the cooling of described controller is provided with on loop
For the frequency conversion radiator dispelled the heat to controller, described frequency conversion radiator includes frequency-variable controller heat exchanger and frequency-variable controller
Blower fan, it is characterised in that comprise the following steps:
(1) temperature, frequency detecting step: detect the coil temperature TA of described frequency-variable controller heat exchanger, compressor in fact
Border running frequency f0；
(2) controller cooling loop cooling step:
As 85 DEG C≤TA≤90 DEG C and f0＜ current compressor setpoint frequency faTime,Described controller cooling loop is closed, institute
State the energising of frequency-variable controller blower fan to run；
When 90 DEG C of ＜ TA≤95 DEG C, and f0＜ faTime,Described controller cooling loop is opened, and controller cooling loop is accessed
Described main coolant loop, described frequency-variable controller blower fan power-off；
As preferably, in described step 2 as TA ＞ 95 DEG C or compressor exhaust temperature TB ＞ 105 DEG C, controller limit frequency
Run.
As preferably, in described step 2: when TA drops to 83 DEG C, stop described controller loop cooling step.
As preferably, as TA ＜ 85 DEG C and f in described step 20≥faTime, described controller cooling loop is closed mode,
Described frequency-variable controller blower fan is off-position.
As preferably, during refrigerating operaton, regulate according to the temperature difference of indoor heat exchanger entrance point and port of export two ends and set
Put the aperture of choke valve between indoor heat exchanger and outdoor heat exchanger, and according to the indoor indoor heat exchanger port of export and compression
The temperature difference of machine suction end carries out degree of superheat correction.
As preferably, during heating operation, adjust according to the temperature difference of indoor indoor heat exchanger entrance point and port of export two ends
The aperture of the choke valve that joint is disposed in the interior between heat exchanger and outdoor heat exchanger, and according to the coil pipe temperature of outdoor outdoor heat exchanger
The temperature difference of degree and compressor air suction end temperature carries out degree of superheat correction.
As preferably, when outdoor environment temperature TC≤-15 DEG C, described controller cooling loop is opened, described frequency conversion control
Device blower fan processed energising runs.
As preferably, as TD-TE ＜ 2 DEG C, increase the aperture of choke valve on described controller cooling loop；
As TD-TE ＞ 4 DEG C, reduce the aperture of choke valve on described controller cooling loop；
When 2 DEG C≤TD-TE≤4 DEG C, on described controller cooling loop, the aperture of choke valve is constant.
Above-mentioned TD is the discharge-end temperature of frequency conversion radiator, and TE is compressor inlet end temperature.
As preferably, during exhaust sensor TB ＞ 102 DEG C, described controller cooling loop is opened.
The present invention brings and provides the benefit that, carries out electric motor temperature reduction or Liquid injection cooling controller, drop when the present invention is freezed
Low controller temperature, it is achieved unit high temperature environment refrigerating runs；During low-temperature heating, carry out jet, improve air inflow and promote system
Heat so that controller is reliable, Effec-tive Function；Automatic regulation controller temperature of the present invention, is effectively improved controller reliability, real
Freeze at a temperature of existing high environment, heat altofrequency operation, improve high-temperature refrigeration amount and low-temperature heating capacity so that room quickly returns
Temperature.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present invention；
A kind of structural representation when accompanying drawing 2 is refrigerating operaton of the present invention；
A kind of structural representation when accompanying drawing 3 is heating operation of the present invention.
Label declaration: 1, compressor；2, four-way change-over valve；3, outdoor heat exchanger；4, outdoor heat exchanger blower fan；5, the first mistake
Filter；6, first throttle valve；7, the second filter；8, indoor heat exchanger；9, the first check valve；10, indoor heat exchanger blower fan；
11, frequency-variable controller blower fan；12, frequency conversion radiator；13, frequency-variable controller heat exchanger；14, electromagnetic throttle valve；15, second is single
To valve；16, the 3rd check valve；TP1, exhaust sensor；TP2, return-air sensor；TP3, outdoor sensor；TP4, outdoor coil pipe used
Sensor；TP5, indoor heat exchanger inlet sensor；TP6, indoor heat exchanger coil pipe sensor；TP7, interior sensor；TP8、
Indoor heat exchanger exit sensor；TP9, radiator outlet sensor；TP10, radiator sensor.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment: the frequency-conversion air-conditioning system of the present embodiment is as it is shown in figure 1, include that main coolant loop and controller are lowered the temperature back
Road, main coolant loop is provided with compressor, four-way change-over valve, outdoor heat exchanger, outdoor heat exchanger blower fan, the first filter,
First throttle valve, the second filter, indoor heat exchanger, indoor heat exchanger blower fan, compressor, four-way change-over valve, outdoor heat exchanger,
First filter, first throttle valve, the second filter, indoor heat exchanger are sequentially connected the main coolant loop of composition, control by pipeline
Frequency conversion radiator for dispelling the heat to controller is installed, for controlling the electromagnetism in controller cooling loop on device processed cooling loop
Choke valve and the first check valve.
Being also equipped with multiple temperature sensor on frequency-conversion air-conditioning system, these temperature sensors include detecting compressor aerofluxus
The exhaust sensor of temperature, the return-air sensor of detection compressor return air temperature, the outdoor sensor of detection outdoor environment temperature,
The outdoor coil pipe used sensor of sensing chamber's external heat exchanger coil temperature, the indoor heat exchanger import of detection indoor heat exchanger inlet temperature
The indoor heat exchanger coil pipe sensor of heat exchanger coils temperature, the indoor biography of detection indoor environment temperature in sensor, sensing chamber
The indoor heat exchanger exit sensor of heat exchanger outlet temperature in sensor and sensing chamber, the dissipating of detection frequency conversion radiator coil temperature
The radiator outlet sensor of the outlet temperature of hot device sensor and detection frequency conversion radiator.
First branch road of controller cooling one end, loop accesses outdoor heat exchanger and first throttle valve by the second check valve
Between pipeline on, i.e. controller cooling loop is connected with the outlet of outdoor heat exchanger by the second check valve, the of this end
Two branch roads access on the pipeline between first throttle valve and indoor heat exchanger by the 3rd check valve, i.e. controller cooling loop leads to
Cross the 3rd check valve to be connected with indoor heat exchanger.
The controller cooling loop other end is connected with the air entry of compressor by the first check valve.
Frequency conversion radiator includes frequency-variable controller heat exchanger and the VFC matched with frequency-variable controller heat exchanger
Device blower fan.Frequency-variable controller heat exchanger includes housing and cooling coil.
As in figure 2 it is shown, during refrigerating operaton: refrigerant gas is discharged from exhaust outlet of compressor, entrance four-way change-over valve, then by
Four-way change-over valve enters outdoor heat exchanger import, flows out through outdoor heat exchanger, then divide two-way after high pressure, high temperature refrigerant cooling
Flowing: the first via enters the first filter, and the second tunnel enters the second check valve.The first via cold-producing medium flowed out from outdoor heat exchanger
Entering the first filter to filter, after the first filter other end flows out, high-pressure refrigerant enters first throttle valve and throttles,
After throttling, cold-producing medium enters the second filter from first segment choke valve, and the cold-producing medium flowed out from the second filter divides two-way stream subsequently
Dynamic: a road enters the 3rd check valve inlet, a road enters indoor heat exchanger and enters four-way change-over valve after indoor heat exchanger evaporates,
Again after four-way change-over valve flows out, enter compressor compresses, the most repeatedly kind of refrigeration cycle through compressor air entry.
Under normality, electromagnetic throttle valve is closed mode, and i.e. controller cooling loop is closed mode, controller cooling loop
Do not access main coolant loop.When controller cooling loop is opened, the second road cold-producing medium flowed out from outdoor heat exchanger enters the
After two check valves, flow out from the second check valve other end, after electromagnetic throttle valve throttles, enter frequency-variable controller exchanger,
Liquid refrigerant, after frequency-variable controller exchanger evaporates, enters the first check valve, after the first check valve flows out, by compression
Machine air entry enters compressor.
As it is shown on figure 3, during heating operation: refrigerant gas is discharged from exhaust outlet of compressor, entrance four-way change-over valve, then by
Four-way change-over valve enters indoor heat exchanger exothermic condensation, flows out through indoor heat exchanger, then divide after high pressure, high temperature refrigerant cooling
Two-way flows: the first via enters the second filter, and the second tunnel enters the 3rd check valve inlet.First flowed out from indoor heat exchanger
After road cold-producing medium enters the second filter filtration, after the second filter other end flows out, enter first throttle valve and throttle,
After throttling, cold-producing medium enters after the first filter filters and flows out, and the cold-producing medium flowed out from the first filter divides two-way to flow subsequently:
One tunnel enters the second check valve；One tunnel enters outdoor heat exchanger and is evaporated, and the refrigerant gas flowed out after evaporation enters four-way
Reversal valve, then after four-way change-over valve flows out, enter compressor compresses, the most repeatedly kind of refrigeration cycle through compressor air entry.
Under normality, electromagnetic throttle valve is closed mode, and i.e. controller cooling loop is closed mode, controller cooling loop
Do not access main coolant loop.When controller cooling loop is opened, the second road cold-producing medium flowed out from indoor heat exchanger enters the
After three check valves, flow out from the 3rd check valve other end, after electromagnetic throttle valve throttles, enter frequency-variable controller exchanger,
Liquid refrigerant, after frequency-variable controller exchanger evaporates, enters the first check valve, after the first check valve flows out, by compression
Machine air entry enters compressor.
As the coil temperature TA ＞ 95 DEG C of frequency-variable controller heat exchanger, controller module surface temperature raises, unit
There will be frequency limitation to run, higher as TA ＞ 105 DEG C, long-play easily occurs that punch through damage, unit fault alarm stop
The serious consequences such as machine, impact is normal to be used and reliability.
The control method of a kind of frequency-conversion air-conditioning system, comprises the following steps:
(1) temperature, frequency detecting step: detection the coil temperature TA of frequency-variable controller heat exchanger, the actual fortune of compressor
Line frequency f0。
(2) degree of superheat correction step:
As TA ＜ 85 DEG C and f0≥faTime, electromagnetic throttle valve no power, controller cooling loop is closed mode, frequency conversion control
Device blower fan processed is off-position；During refrigerating operaton, come according to the temperature difference of indoor indoor heat exchanger entrance point and port of export two ends
The aperture of the choke valve that regulation is disposed in the interior between heat exchanger and outdoor heat exchanger, and according to the indoor indoor heat exchanger port of export
Degree of superheat correction is carried out with the temperature difference of compressor air suction end；During heating operation, according to indoor heat exchanger coil temperature Tm(i.e.
Indoor heat exchanger temperature) regulate the aperture of the first throttle valve being disposed in the interior between heat exchanger and outdoor heat exchanger, Tm≤
During target temperature-2 DEG C, choke valve current operational objective aperture basis 2；During Tm ＜ target temperature+1 DEG C, choke valve keeps working as
Front operational objective aperture；During Tm ＞ target temperature+2 DEG C, choke valve current operational objective aperture basis+2；The every 30S of controller examines
Survey and adjust 1 time；And carry out according to the outdoor coil temperature of outdoor heat exchanger and the temperature difference of compressor air suction end temperature overheated
Degree is revised.
(3) controller cooling loop cooling step:
A, as 85 DEG C≤TA≤90 DEG C and f0＜ current compressor setpoint frequency faTime, electromagnetic throttle valve no power, controller
Cooling loop is closed, and the energising of frequency-variable controller blower fan runs；f0≥faTime, maintain the original state；
B, as 90 DEG C of ＜ TA≤95 DEG C and f0＜ faTime, electromagnetic throttle valve energising is opened so that controller cooling loop is left
Opening, described main coolant loop, frequency-variable controller blower fan power-off are accessed in controller cooling loop；f0≥faTime, maintain the original state；
In c, controller loop cooling step, when TA drops to 83 DEG C, stop control cooling loop cooling step；
As 80 DEG C of ＜ TA≤95 DEG C and f0＜ faTime, controller can frequently adjust switching, low instability during height during performance, this
Shi Caiyong controller cooling loop effectively reduces controller temperature, and the energy-efficient performance of air-conditioning is also improved,.
(4) controller limit frequency operating procedure:
As TA ＞ 95 DEG C or compressor exhaust temperature TB ＞ 105 DEG C, air-conditioning enters limit frequency and runs.In limit frequency runs,
Controller runs with 2Hz/min speed.
As TB ＞ 102 DEG C, controller cooling loop is opened.
(5) low temperature high frequency increasing enthalpy drop temperature heating operation step:
When outdoor environment temperature TC≤-15 DEG C, controller cooling loop is opened, and the energising of frequency-variable controller blower fan runs.
A, as TD-TE ＜ 2 DEG C, increase the aperture of choke valve on controller cooling loop；
B, as TD-TE ＞ 4 DEG C, reduce the aperture of choke valve on controller cooling loop；
C, when 2 DEG C≤TD-TE≤4 DEG C, on controller cooling loop, the aperture of choke valve is constant.
Above-mentioned TD is the discharge-end temperature of frequency device radiator, and TE is compressor inlet end temperature, and unit is the most maximum
Changing effect, quickly meet user's request, unfailing performance is high.
Below only preferred embodiment of the present invention is described, but is not to be construed as the limit to scope
System.The present invention is not only limited to above example, and its concrete structure or shape allow to change.In a word, the protection model of the present invention
Enclose and should include that those obviously convert to those skilled in the art or substitute and remodeling.
Claims (1)
1. a frequency-conversion air-conditioning system control method, including frequency-conversion air-conditioning system, described air conditioning system includes main coolant loop, institute
State and on main coolant loop, be provided with compressor, four-way change-over valve, outdoor heat exchanger and indoor heat exchanger, also include that controller is lowered the temperature
Loop, described controller cooling one end, loop is connected with the outlet of described outdoor heat exchanger, the other end and described compressor
Air entry is connected, and connecting between described outdoor heat exchanger and indoor heat exchanger has first throttle valve, described first throttle valve
Outlet is also connected with described controller cooling loop, is provided with between described controller cooling loop and described outdoor heat exchanger
Second check valve, described controller cooling loop is connected with the air entry of compressor by the first check valve, described first segment
Being provided with the 3rd check valve between outlet and the described controller cooling loop of stream valve, described first throttle valve two ends connect respectively
There are the first filter and the second filter, described controller cooling loop is provided with the frequency conversion heat radiation for dispelling the heat to controller
Device, described frequency conversion radiator includes frequency-variable controller heat exchanger and the change matched with described frequency-variable controller heat exchanger
Frequently controller blower fan, it is characterised in that comprise the following steps:
(1) temperature, frequency detecting step: detect the coil temperature TA of described frequency-variable controller heat exchanger, the actual fortune of compressor
Line frequency f0；
(2) controller cooling loop cooling step:
As 85 DEG C≤TA≤90 DEG C and f0＜ current compressor setpoint frequency faTime,Described controller cooling loop is closed, described change
Frequently controller blower fan energising runs；
When 90 DEG C of ＜ TA≤95 DEG C, and f0＜ faTime,Described controller cooling loop is opened, and controller cooling loop is accessed described
Main coolant loop, described frequency-variable controller blower fan power-off.
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| CN104482597B (en) * | 2014-12-08 | 2017-05-10 | 广东美的制冷设备有限公司 | Air conditioner |
| CN111271848B (en) * | 2019-07-17 | 2021-07-06 | 宁波奥克斯电气股份有限公司 | Control method of air conditioner and air conditioner thereof |
| CN113865137B (en) * | 2021-09-08 | 2022-12-09 | 美的集团武汉暖通设备有限公司 | Air source heat pump system and control method of air source heat pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939910A (en) * | 1986-10-30 | 1990-07-10 | Tokyo Shibaura Electric Co | Air conditioner |
| CN101498469A (en) * | 2008-01-31 | 2009-08-05 | 乐金电子(天津)电器有限公司 | Outdoor unit of inverter air conditioner |
| CN201348396Y (en) * | 2009-01-19 | 2009-11-18 | 广东美的电器股份有限公司 | Frequency-change air conditioner |
| CN103162475A (en) * | 2013-03-22 | 2013-06-19 | 青岛海信日立空调系统有限公司 | Heat dissipation circulating system of air conditioner |
| CN103363719A (en) * | 2012-03-28 | 2013-10-23 | 三菱电机株式会社 | Refrigeration cycle apparatus and outdoor heat source unit |
| CN203605408U (en) * | 2013-10-26 | 2014-05-21 | 宁波奥克斯空调有限公司 | Variable frequency air conditioner system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH086951B2 (en) * | 1987-01-30 | 1996-01-29 | 株式会社東芝 | air conditioner |
-
2013
- 2013-10-26 CN CN201310510479.9A patent/CN103574857B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939910A (en) * | 1986-10-30 | 1990-07-10 | Tokyo Shibaura Electric Co | Air conditioner |
| CN101498469A (en) * | 2008-01-31 | 2009-08-05 | 乐金电子(天津)电器有限公司 | Outdoor unit of inverter air conditioner |
| CN201348396Y (en) * | 2009-01-19 | 2009-11-18 | 广东美的电器股份有限公司 | Frequency-change air conditioner |
| CN103363719A (en) * | 2012-03-28 | 2013-10-23 | 三菱电机株式会社 | Refrigeration cycle apparatus and outdoor heat source unit |
| CN103162475A (en) * | 2013-03-22 | 2013-06-19 | 青岛海信日立空调系统有限公司 | Heat dissipation circulating system of air conditioner |
| CN203605408U (en) * | 2013-10-26 | 2014-05-21 | 宁波奥克斯空调有限公司 | Variable frequency air conditioner system |
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Inventor after: Leng Ling Inventor after: Qian Hui Inventor after: Yang Lu Inventor after: Zhang Jianhui Inventor after: Ying Biye Inventor before: Qian Hui Inventor before: Yang Lu Inventor before: Zhang Jianhui Inventor before: Ying Biye |
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Effective date of registration: 20180117 Address after: 315191 Yinzhou District Province, Ningbo City, Jiang Shan town on the village of summer ho Patentee after: AUX air conditioning Limited by Share Ltd Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Group. |
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