CN109654598A - A kind of adjustable air-conditioning system of heating condensing pressure and its control method - Google Patents
A kind of adjustable air-conditioning system of heating condensing pressure and its control method Download PDFInfo
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- CN109654598A CN109654598A CN201910129979.5A CN201910129979A CN109654598A CN 109654598 A CN109654598 A CN 109654598A CN 201910129979 A CN201910129979 A CN 201910129979A CN 109654598 A CN109654598 A CN 109654598A
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- air
- valve
- return air
- return
- condensing pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
-
- 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
-
- 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
-
- 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
- F24F2110/10—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Fuzzy Systems (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention relates to a kind of adjustable air-conditioning systems of heating condensing pressure, including indoor unit and outdoor unit, the indoor unit include indoor heat exchanger；The indoor heat exchanger is set at the return air inlet of the indoor unit, and connects and composes refrigerant circulation loop with the outdoor unit；The return air inlet is equipped with bypass air-valve, or secondary returning air port is arranged beside the return air inlet, or bypass air-valve is arranged in the return air inlet and secondary returning air port is arranged beside the return air inlet simultaneously；The secondary returning air port is equipped with secondary return air air-valve；The indoor heat exchanger is equipped with temperature sensor；The bypass air-valve, secondary return air air-valve and temperature sensor are connected with controller respectively, and by the control of the controller.The present invention can be under the premise of not changing indoor heat exchanger heat exchange area and indoor unit air output, the heating condensing pressure of regulating system, realizes low return air temperature refrigeration or heating operation in places such as drug cool place libraries, greatly improves energy-saving effect.
Description
Technical field
The present invention relates to a kind of air-conditioning system and control method, especially a kind of air-conditioning of adjustable heating condensing pressure
System, the adjustable air-conditioning system of specifically a kind of heating condensing pressure and its control method.
Background technique
Technique place this kind of for drug cool place library, room temperature whole year require within the scope of 0-20 DEG C, need the air-conditioning summer
Season refrigerating operaton by room temperature control within 20 DEG C, winter heating operation by room temperature control at 0 DEG C or more.And have
There is certain particularity: Summer Indoor cryogenic refrigeration winter indoor low temperature heating, cryogenic refrigeration needs to increase indoor heat exchanger heat exchange
Area increases heat exchange air quantity simultaneously to guarantee higher evaporating temperature, prevents interior machine heat exchanger refrigerating operaton from freezing；Low-temperature heating
It needs to reduce indoor heat exchanger heat exchange area or reduces heat exchange air quantity to guarantee condensing pressure in the reliable range of operation of compressor
It is interior.But air-conditioning conventional at present is mostly deposited in a heating mode, the problem of energy-saving effect difference, it is difficult to meet above-mentioned place
Demand is badly in need of improving.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of adjustable air-conditioning system of heating condensing pressure and
Its control method can satisfy the special air conditioning requirements of drug cool place library Summer Indoor cryogenic refrigeration winter indoor low temperature heating,
Keep heating operation more energy saving and reliable.
The technical scheme is that
A kind of adjustable air-conditioning system of heating condensing pressure, including indoor unit and outdoor unit, the indoor unit include indoor heat exchange
Device；The indoor heat exchanger is set at the return air inlet of the indoor unit, and is connected and composed refrigerant circulation with the outdoor unit and returned
Road；The return air inlet is equipped with bypass air-valve, or secondary returning air port is arranged beside the return air inlet, or by return air inlet setting
Simultaneously secondary returning air port is arranged in ventilation valve beside the return air inlet simultaneously；The secondary returning air port is equipped with secondary return air air-valve；The room
Interior heat exchanger is equipped with temperature sensor；The bypass air-valve, secondary return air air-valve and temperature sensor respectively with controller phase
Even, and by the control of the controller.
Further, the secondary returning air port is adjacent and vertical with return air inlet.
Further, it is equipped with filter screen respectively at the return air inlet and secondary returning air port.
It further, further include pressure fan；The pressure fan is mounted at the air outlet of the indoor unit.
Further, the outdoor unit includes that compressor, four-way valve, outdoor heat exchanger, liquid storage device, filter, electronics are swollen
Swollen valve and gas-liquid separator, and refrigerant circulation loop is sequentially connected and composed with the indoor heat exchanger.
A kind of control method heating the adjustable air-conditioning system of condensing pressure, comprising the following steps:
1) unit starting；
2) judge whether unit is in heating mode；If so, going to step 4)；If not, going to step 3)；
3) it bypasses air-valve or secondary return air air-valve is turned off；Or it opens to specified aperture；And return step 2)；
4) controller is accurate adjustment by reading unit dial-up or text setting come the regulative mode for judging that heat pump heats condensing pressure
Or coarse adjustment；Coarse adjustment in this way, goes to step 5)；Such as accurate adjustment, step 6) is gone to；
5) coarse mode, bypasses air-valve or secondary return air air-valve is to open, and compressor is opened, and four-way valve obtains electric, unit heat pump
Operation；
6) fine mode bypasses air-valve or secondary return air air-valve and opens in advance to initial opening, and compressor is opened, four-way valve obtain it is electric,
Unit operation of heat pump；
7) inner disc temperature T is detected by temperature sensor, and compared on T and the condensation temperature lower limit value Ta and condensation temperature of setting
Limit value Tb；
If 8) T < Ta, bypasses air-valve or secondary return air valve area is opened greatly；If Ta < T < Tb, bypasses air-valve or secondary returning
Wind valve area remains unchanged；If T > Tb, bypasses air-valve or secondary return air valve area turns down；
9) return step 2).
Further, in the step 7), the Ta is 30 DEG C；The Tb is 55 DEG C.
Beneficial effects of the present invention:
The present invention can be under the premise of not changing indoor heat exchanger heat exchange area and indoor unit air output, and the heating of regulating system is cold
Solidifying pressure realizes low return air temperature refrigeration or heating operation in places such as drug cool place libraries, greatly improves energy-saving effect.
Meanwhile it can also make to control more accurate, raising system reliability of operation.
Detailed description of the invention
Fig. 1 is the present invention while the structural schematic diagram that bypass air-valve and secondary return air air-valve is arranged.
Wherein: 1- return air inlet；2- indoor heat exchanger；3- filter screen；4- temperature sensor；5- controller；6- pressure fan；7-
Shut-off valve；9- gas-liquid separator；10- compressor；11- outdoor heat exchanger；12- fan；13- liquid storage device；14- filter；15- electricity
Sub- expansion valve；16- four-way valve；17- bypasses air-valve；18- secondary returning air port；19- secondary return air air-valve；20- air outlet.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment one, as shown in Figure 1, a kind of adjustable air-conditioning system of heating condensing pressure, including indoor unit and outdoor unit,
The indoor unit includes return air inlet 1 and air outlet 20；Indoor heat exchanger 2 is set at the return air inlet 1, convenient for room air by being somebody's turn to do
Return air inlet 1 exchanges heat with the indoor heat exchanger 2.The side of the indoor heat exchanger 2 is equipped with bypass air-valve 17, can pass through tune
It saves to control the air quantity for entering the indoor unit from the return air inlet 1.The side of the return air inlet 1 is equipped with secondary returning air port 18.
Meanwhile the secondary returning air port 18 is equipped with secondary return air air-valve 19, and the ventilation in the secondary returning air port 18 can be controlled by adjusting
Amount.Preferably, the secondary returning air port 18 is adjacent and vertical with return air inlet 1, alternatively, can carry out position tune according to customer demand
It is whole.The indoor heat exchanger 2 is equipped with temperature sensor 4, can sense the temperature of inner disc.The bypass air-valve 17, secondary returning
Wind air-valve 19 and temperature sensor 4 are connected with controller 5 respectively.The controller 5 can read unit dial-up or text setting comes
The regulative mode for judging heat pump heating condensing pressure is accurate adjustment or coarse adjustment, and controls the bypass air-valve 17 or secondary return air wind
Valve 19 is acted accordingly.If coarse adjustment, then the bypass air-valve 17 or secondary return air air-valve 19 are controlled as switching value
System.If accurate adjustment, then the bypass air-valve 17 or secondary return air air-valve 19 are controlled as analog quantity.The bypass air-valve 17
It is synchronization action with secondary return air air-valve 19, can simplify control, improve efficiency.At the return air inlet 1 and secondary returning air port 18
It is respectively equipped with filter screen 3, can be effectively filtered out into the impurity in the air of the indoor unit.It is equipped with and send at the air outlet 20
Air by heat exchange can be preferably sent into indoor by blower 6.
The outdoor unit includes that compressor 10, four-way valve 16, outdoor heat exchanger 11, liquid storage device 13, filter 14, electronics are swollen
Swollen valve 15 and gas-liquid separator 9, and refrigerant circulation loop is sequentially connected and composed with the indoor heat exchanger 2.The indoor unit
It is additionally provided with several shut-off valves 7 on the pipeline connecting with outdoor unit, circuit is closed when being easy for installation and maintenance.
The control method of the heating adjustable air-conditioning system of condensing pressure, comprising the following steps:
1) unit starting；
2) judge whether unit is in heating mode；If so, going to step 4)；If not, going to step 3)；
3) it bypasses air-valve or secondary return air air-valve is turned off, or open to specified aperture, and return step 2)；
4) controller is accurate adjustment by reading unit dial-up or text setting come the regulative mode for judging that heat pump heats condensing pressure
Or coarse adjustment；Coarse adjustment in this way, goes to step 5)；Such as accurate adjustment, step 6) is gone to；
5) coarse mode, bypasses air-valve or secondary return air air-valve is to open, and compressor is opened, and four-way valve obtains electric, unit heat pump
Operation；
6) fine mode bypasses air-valve or secondary return air air-valve and opens in advance to initial opening, and compressor is opened, four-way valve obtain it is electric,
Unit operation of heat pump；
7) inner disc temperature T is detected by temperature sensor, and compared on T and the condensation temperature lower limit value Ta and condensation temperature of setting
Limit value Tb；Wherein, Ta can be 30 DEG C, and Tb can be 55 DEG C；
If 8) T < Ta, bypasses air-valve or secondary return air valve area is opened greatly；If Ta < T < Tb, bypasses air-valve or secondary returning
Wind valve area remains unchanged；If T > Tb, bypasses air-valve or secondary return air valve area turns down；
9) return step 2).
Embodiment two, the present embodiment and the structure of embodiment one are essentially identical, and the main distinction is: being only arranged in return air inlet
Air-valve is bypassed, and is not provided with secondary return air mouth, the needs of to meet different type of machines or client, makes to install or safeguard more square
Just.
Embodiment three, the present embodiment and the structure of embodiment one are essentially identical, and the main distinction is: secondary return air is only arranged
Mouthful and secondary return air air-valve, without the bypass forms such as air-valve are arranged in return air inlet, the needs of to meet different type of machines or client,
Make to install or safeguard more convenient.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (7)
1. a kind of adjustable air-conditioning system of heating condensing pressure, including indoor unit and outdoor unit, it is characterized in that the indoor unit packet
Include indoor heat exchanger；The indoor heat exchanger is set at the return air inlet of the indoor unit, and connects and composes system with the outdoor unit
Refrigerant circulation loop；The return air inlet is equipped with bypass air-valve, or secondary returning air port is arranged beside the return air inlet, or at described time
Simultaneously secondary returning air port is arranged in setting bypass air-valve in air port beside the return air inlet simultaneously；The secondary returning air port is equipped with secondary return air wind
Valve；The indoor heat exchanger is equipped with temperature sensor；The bypass air-valve, secondary return air air-valve and temperature sensor respectively with
Controller is connected, and by the control of the controller.
2. the adjustable air-conditioning system of heating condensing pressure according to claim 1, it is characterized in that the secondary returning air port with
Return air inlet is adjacent and vertical.
3. the adjustable air-conditioning system of heating condensing pressure according to claim 1, it is characterized in that the return air inlet and secondary
Filter screen is respectively equipped at return air inlet.
4. the adjustable air-conditioning system of heating condensing pressure according to claim 1, it is characterized in that further including pressure fan；This send
Assembling is at the air outlet of the indoor unit.
5. the adjustable air-conditioning system of heating condensing pressure according to claim 1, it is characterized in that the outdoor unit includes pressure
Contracting machine, four-way valve, outdoor heat exchanger, liquid storage device, filter, electric expansion valve and gas-liquid separator, and with the indoor heat exchange
Device sequentially connects and composes refrigerant circulation loop.
6. a kind of control method for heating the adjustable air-conditioning system of condensing pressure, it is characterized in that the following steps are included:
1) unit starting；
2) judge whether unit is in heating mode；If so, going to step 4)；If not, going to step 3)；
3) it bypasses air-valve or secondary return air air-valve is turned off；Or it opens to specified aperture；And return step 2)；
4) controller is accurate adjustment by reading unit dial-up or text setting come the regulative mode for judging that heat pump heats condensing pressure
Or coarse adjustment；Coarse adjustment in this way, goes to step 5)；Such as accurate adjustment, step 6) is gone to；
5) coarse mode, bypasses air-valve or secondary return air air-valve is to open, and compressor is opened, and four-way valve obtains electric, unit heat pump
Operation；
6) fine mode bypasses air-valve or secondary return air air-valve and opens in advance to initial opening, and compressor is opened, four-way valve obtain it is electric,
Unit operation of heat pump；
7) inner disc temperature T is detected by temperature sensor, and compared on T and the condensation temperature lower limit value Ta and condensation temperature of setting
Limit value Tb；
If 8) T < Ta, bypasses air-valve or secondary return air valve area is opened greatly；If Ta < T < Tb, bypasses air-valve or secondary returning
Wind valve area remains unchanged；If T > Tb, bypasses air-valve or secondary return air valve area turns down；
9) return step 2).
7. the control method of the heating adjustable air-conditioning system of condensing pressure according to claim 6, it is characterized in that the step
It is rapid 7) in, the Ta be 30 DEG C；The Tb is 55 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129979.5A CN109654598A (en) | 2019-02-21 | 2019-02-21 | A kind of adjustable air-conditioning system of heating condensing pressure and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129979.5A CN109654598A (en) | 2019-02-21 | 2019-02-21 | A kind of adjustable air-conditioning system of heating condensing pressure and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109654598A true CN109654598A (en) | 2019-04-19 |
Family
ID=66123574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910129979.5A Pending CN109654598A (en) | 2019-02-21 | 2019-02-21 | A kind of adjustable air-conditioning system of heating condensing pressure and its control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109654598A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435398A (en) * | 2022-08-25 | 2022-12-06 | 广东西屋康达空调有限公司 | Air conditioning unit and control method |
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|---|---|---|---|---|
| GB1481316A (en) * | 1973-08-02 | 1977-07-27 | Carrier Corp | Air conditioning apparatus |
| JPS55164519A (en) * | 1979-06-12 | 1980-12-22 | Nippon Denso Co Ltd | Controlling device for air-conditioner |
| CN1603705A (en) * | 2004-11-05 | 2005-04-06 | 王舒娴 | Blast control mechanism for indoor set of air conditioner |
| CN1892123A (en) * | 2005-07-01 | 2007-01-10 | 煜丰科技股份有限公司 | Air-conditioning system using terminal box to provide most suitable air quantity |
| CN1948845A (en) * | 2005-10-11 | 2007-04-18 | 富士通将军股份有限公司 | Air conditioner |
| CN101915450A (en) * | 2010-08-16 | 2010-12-15 | 清华大学 | Multi-online indoor machine wind side bypass content control method and device thereof |
| CN102003754A (en) * | 2010-11-30 | 2011-04-06 | 江苏兆胜空调有限公司 | Low temperature air supply air conditioner device for naval vessels and control method thereof |
| CN201827978U (en) * | 2010-07-23 | 2011-05-11 | 广州同方瑞风空调有限公司 | Energy-saving constant temperature and humidity purified combined air conditioning unit |
| CN202204068U (en) * | 2011-08-01 | 2012-04-25 | 江苏风神空调集团股份有限公司 | Non-dewing fan-coil unit |
| CN103196181A (en) * | 2012-01-06 | 2013-07-10 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN203385088U (en) * | 2013-06-17 | 2014-01-08 | 南京天加空调设备有限公司 | Energy-saving yearly refrigeration air conditioner |
| CN207035563U (en) * | 2017-07-27 | 2018-02-23 | 山东科美自动化设备科技有限公司 | Variable air rate direct-expansion type unit |
-
2019
- 2019-02-21 CN CN201910129979.5A patent/CN109654598A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1481316A (en) * | 1973-08-02 | 1977-07-27 | Carrier Corp | Air conditioning apparatus |
| JPS55164519A (en) * | 1979-06-12 | 1980-12-22 | Nippon Denso Co Ltd | Controlling device for air-conditioner |
| CN1603705A (en) * | 2004-11-05 | 2005-04-06 | 王舒娴 | Blast control mechanism for indoor set of air conditioner |
| CN1892123A (en) * | 2005-07-01 | 2007-01-10 | 煜丰科技股份有限公司 | Air-conditioning system using terminal box to provide most suitable air quantity |
| CN1948845A (en) * | 2005-10-11 | 2007-04-18 | 富士通将军股份有限公司 | Air conditioner |
| CN201827978U (en) * | 2010-07-23 | 2011-05-11 | 广州同方瑞风空调有限公司 | Energy-saving constant temperature and humidity purified combined air conditioning unit |
| CN101915450A (en) * | 2010-08-16 | 2010-12-15 | 清华大学 | Multi-online indoor machine wind side bypass content control method and device thereof |
| CN102003754A (en) * | 2010-11-30 | 2011-04-06 | 江苏兆胜空调有限公司 | Low temperature air supply air conditioner device for naval vessels and control method thereof |
| CN202204068U (en) * | 2011-08-01 | 2012-04-25 | 江苏风神空调集团股份有限公司 | Non-dewing fan-coil unit |
| CN103196181A (en) * | 2012-01-06 | 2013-07-10 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN203385088U (en) * | 2013-06-17 | 2014-01-08 | 南京天加空调设备有限公司 | Energy-saving yearly refrigeration air conditioner |
| CN207035563U (en) * | 2017-07-27 | 2018-02-23 | 山东科美自动化设备科技有限公司 | Variable air rate direct-expansion type unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435398A (en) * | 2022-08-25 | 2022-12-06 | 广东西屋康达空调有限公司 | Air conditioning unit and control method |
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Application publication date: 20190419 |
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| RJ01 | Rejection of invention patent application after publication |