CN108105919B - Variable frequency air conditioner system for dry working condition refrigeration and control method thereof - Google Patents
Variable frequency air conditioner system for dry working condition refrigeration and control method thereof Download PDFInfo
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- CN108105919B CN108105919B CN201810064377.1A CN201810064377A CN108105919B CN 108105919 B CN108105919 B CN 108105919B CN 201810064377 A CN201810064377 A CN 201810064377A CN 108105919 B CN108105919 B CN 108105919B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 69
- 238000004378 air conditioning Methods 0.000 claims abstract description 10
- 230000008020 evaporation Effects 0.000 claims description 29
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000007791 dehumidification Methods 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- F24F13/24—Means for preventing or suppressing noise
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The utility model provides a variable frequency air conditioning system of dry working condition refrigeration and control method thereof, relate to air conditioning technology field, its structure includes the fan, a compressor, the evaporimeter, the expansion valve, the condenser, the steam bypass valve, a sensor for obtaining evaporating temperature, air temperature sensor, air humidity sensor, a controller, the output of compressor termination condenser's input, the output termination expansion valve's input, the output termination of expansion valve's input, the input of compressor is terminated to the output of evaporimeter, the controlled end of compressor, air humidity sensor, air temperature sensor, a sensor for obtaining evaporating temperature and fan are connected with the controller respectively, and be controlled by it, a sensor for obtaining evaporating temperature is arranged in the evaporimeter, the steam bypass valve is installed on the pipeline between compressor export and the expansion valve export, the compressor is the variable frequency compressor that can the output of infinitely variable frequency control refrigerating capacity, the fan is the adjustable speed fan that can infinitely variable air output, the steam bypass valve is the electronic type adjustable flow valve.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a variable frequency air conditioner system for dry working condition refrigeration and a control method thereof.
Background
The refrigeration of the air conditioner of the machine room needs to be designed with high sensible heat ratio, however, because the evaporation temperature of the air conditioner is uncontrollable, the high sensible heat ratio is difficult to realize, if the room humidity is higher, the sensible heat ratio is smaller, unnecessary cold is consumed while condensate is generated, and the air conditioner is excessively subjected to passive dehumidification and is also put into a humidifier for humidification, so that unnecessary repeated consumption of humidification and dehumidification energy is caused, and the air conditioner is not energy-saving to operate.
At present, in order to improve the sensible heat ratio, the existing technical scheme generally uses the principle of large air volume and small enthalpy difference, increases the design air volume of an air conditioner of a machine room, and improves the evaporation temperature as much as possible, thereby improving the sensible heat ratio, and the technical scheme can only improve the sensible heat ratio to 0 at most. About 9, unnecessary energy consumption of humidification and dehumidification caused by passive dehumidification cannot be completely avoided, the energy consumption of a fan can be obviously increased, the energy efficiency ratio of a unit is reduced, and the running noise of the unit is larger.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a variable frequency air conditioner system for dry working condition refrigeration and a control method thereof.
The aim of the invention is achieved by the following technical scheme:
the variable frequency air conditioning system for dry working condition refrigeration comprises a fan, a compressor, an evaporator, an expansion valve, a condenser, a hot gas bypass valve, a sensor for obtaining evaporation temperature, an air temperature sensor, an air humidity sensor and a controller,
the output end of the compressor is connected with the input end of the condenser, the output end of the condenser is connected with the input end of the expansion valve, the output end of the expansion valve is connected with the input end of the evaporator, the output end of the evaporator is connected with the input end of the compressor, the controlled end of the compressor, the air humidity sensor, the air temperature sensor, the sensor for obtaining the evaporating temperature and the fan are respectively connected with the controller and controlled by the controller,
the sensor for obtaining evaporating temperature is arranged on the evaporator, the hot gas bypass valve is arranged on a pipeline between the outlet of the compressor and the outlet of the expansion valve, the compressor is a variable capacity compressor, the fan is an adjustable speed fan capable of steplessly adjusting air output, and the hot gas bypass valve is an electronic adjustable flow valve.
Wherein, the sensor for obtaining the evaporating temperature is arranged on the surface of the heat exchange fin of the evaporator.
Wherein, air temperature sensor and air humidity sensor all install the air inlet side at the evaporimeter.
Wherein, the hot gas bypass valve is an electronic adjustable flow valve.
According to the control method of the variable frequency air conditioner system for dry working condition refrigeration, the dry working condition operation with the evaporation temperature Tc higher than the dew point temperature Td is realized through the combined adjustment of the frequency of the compressor, the rotating speed of the fan and the hot gas bypass valve.
Specifically, the dry bulb temperature Ti and the relative humidity Hi of the intake air are detected, the dew point temperature Td of the air is calculated according to the detected dry bulb temperature Ti and the relative humidity Hi, and when the dew point temperature Td is within a preset range, a refrigeration mode is started to enter, wherein the refrigeration mode comprises a normal refrigeration mode and a refrigeration mode under the protection of excessively low evaporation temperature.
In the normal refrigeration mode, the fan and the compressor regulate the rotating speed and the frequency according to the refrigeration load, and the hot gas bypass valve is kept closed; in the refrigerating mode under the protection of the too low evaporating temperature, the sensor for obtaining the evaporating temperature obtains the evaporating temperature Tc of the evaporator, and the fan, the compressor and the hot gas bypass valve are adjusted according to the evaporating temperature Tc, so that the evaporating temperature Tc is not lower than the dew point temperature Td.
When the evaporation temperature Tc is detected to be less than the dew point temperature Td+ lower limit temperature difference, the system enters a refrigeration mode under the protection of the too low evaporation temperature; when the evaporation temperature Tc is detected to be more than or equal to the dew point temperature Td+ upper limit temperature difference, the system exits the refrigeration mode under the protection of the too low evaporation temperature and returns to the normal refrigeration mode.
In a refrigerating mode under the protection of the too low evaporating temperature, the system gradually increases the rotating speed of the fan at a certain accelerating speed so as to increase the evaporating temperature Tc; before the fan speed reaches 100%, the compressor keeps adjusting the frequency according to the refrigeration load, and the hot gas bypass valve keeps closing.
In the refrigerating mode under the protection of the too low evaporating temperature, if the rotating speed of the fan reaches 100%, the rotating speed of the fan is kept to be 100%, the frequency of the compressor is reduced at a certain frequency reducing rate, and the evaporating temperature Tc is increased; when the compressor frequency does not reach the minimum frequency, the hot gas bypass valve remains closed,
if the fan speed reaches 100% speed and the compressor frequency reaches the minimum frequency, keeping the fan speed 100% and the minimum frequency of the compressor unchanged, opening the hot gas bypass valve and increasing the opening degree of the hot gas bypass valve at a certain valve opening rate,
if the fan speed has reached 100% speed, the compressor frequency has reached minimum frequency, and the opening of the hot gas bypass valve has reached 100%, then the fan speed 100%, the compressor minimum frequency, and the hot gas bypass valve opening are maintained unchanged by 100%.
The invention has the beneficial effects that: according to the variable-frequency air conditioning system, through the combined adjustment of the frequency of the compressor, the rotating speed of the fan and the hot gas bypass valve, the evaporating temperature of the machine room air conditioner is always higher than the dew point temperature of return air in a refrigerating mode, the refrigerating operation under a dry working condition is realized, the unnecessary repeated loss of energy during humidification and dehumidification caused by passive dehumidification can be avoided, the power consumption of the compressor can be reduced when the evaporating temperature is at a higher level, the energy consumption of the fan can be reduced, the energy efficiency ratio of a refrigerating system is improved, and noise is effectively suppressed. Meanwhile, the evaporator runs under a dry working condition, and the heat exchanger can adopt an all-aluminum micro-channel heat exchanger, so that the heat exchange performance is improved, copper materials are saved, and the cost is reduced.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
Fig. 1 is a schematic structural diagram of a variable frequency air conditioning system for dry-condition refrigeration and a control method thereof.
The figure comprises the following components:
fan 1, compressor 2, evaporator 3, expansion valve 4, condenser 5, hot gas bypass valve 6, sensor 7 for obtaining evaporating temperature, air temperature sensor 8, air humidity sensor 9, controller 10.
Detailed Description
The invention will be further described with reference to the following examples.
The variable frequency air conditioning system for dry-condition refrigeration in the embodiment, as shown in fig. 1, comprises a fan 1, a compressor 2, an evaporator 3, an expansion valve 4, a condenser 5, a hot gas bypass valve 6, a sensor 7 for obtaining evaporation temperature, an air temperature sensor 8, an air humidity sensor 9 and a controller 10,
the output end of the compressor 2 is connected with the input end of the condenser 5, the output end of the condenser 5 is connected with the input end of the expansion valve 4, the output end of the expansion valve 4 is connected with the input end of the evaporator 3, the output end of the evaporator 3 is connected with the input end of the compressor 2, the controlled end of the compressor 2, the air humidity sensor 9, the air temperature sensor 8, the sensor 7 for obtaining the evaporation temperature and the fan 1 are respectively connected with the controller 10 and controlled by the controller,
the sensor 7 for obtaining the evaporating temperature is arranged on the evaporator 3, and can be an evaporating temperature sensor for directly obtaining the temperature or an evaporating pressure sensor for detecting the pressure and then calculating the temperature, the hot gas bypass valve 6 is arranged on a pipeline between the outlet of the compressor 2 and the outlet of the expansion valve 4, the compressor 2 is a variable capacity compressor, preferably, the compressor 2 is a variable frequency compressor 2 capable of continuously adjusting the output of the refrigerating capacity, the fan 1 is an adjustable speed fan 1 capable of continuously adjusting the output of the air quantity, and the hot gas bypass valve 6 is an electronic adjustable flow valve.
Wherein the sensor 7 for obtaining the evaporating temperature is arranged on the surface of the heat exchanging fin of the evaporator 3, so that the temperature of the evaporator 3 can be better obtained.
The air temperature sensor 8 and the air humidity sensor 9 are both installed on the air inlet side of the evaporator 3, and are respectively used for detecting the temperature and the humidity of air which is not subjected to air conditioning treatment and comes from a closed heat channel or a large air conditioner of a machine room.
According to the control method of the variable frequency air conditioning system for dry working condition refrigeration, dry working condition operation with evaporation temperature Tc higher than dew point temperature Td is achieved through joint adjustment of the frequency of the compressor 2, the rotating speed of the fan 1 and the hot gas bypass valve 6.
Specifically, the dry bulb temperature Ti and the relative humidity Hi of the intake air are detected, and the dew point temperature Td of the air is calculated according to the detected dry bulb temperature Ti and the relative humidity Hi, and when the dew point temperature Td is within a preset range (generally 10-15 ℃), the intake air starts to enter a refrigeration mode, wherein the refrigeration mode comprises a normal refrigeration mode and a refrigeration mode under the protection of excessively low evaporation temperature.
In the normal refrigeration mode, the fan 1 and the compressor 2 regulate the rotation speed and the frequency according to the refrigeration load, and the hot gas bypass valve 6 is kept closed; in the refrigerating mode under the protection of the too low evaporating temperature, the sensor 7 for obtaining the evaporating temperature obtains the evaporating temperature Tc of the evaporator 3, and the fan 1, the compressor 2 and the hot gas bypass valve 6 are adjusted according to the evaporating temperature Tc, so that the evaporating temperature Tc is not lower than the dew point temperature Td, and the evaporator 3 can realize complete dry working condition operation.
When the evaporation temperature Tc is detected to be less than the dew point temperature Td+the lower limit temperature difference (such as 0.5 ℃), the system enters a refrigeration mode under the protection of the too low evaporation temperature; when the temperature difference (such as 2 ℃) of the evaporation temperature Tc which is more than or equal to the dew point temperature Td+ upper limit is detected, the system exits the refrigeration mode under the protection of the too low evaporation temperature and returns to the normal refrigeration mode.
In the refrigerating mode under the protection of the too low evaporating temperature, the system gradually increases the rotating speed of the fan 1 at a certain accelerating speed (such as 1%/s) so as to increase the evaporating temperature Tc; before the fan 1 speed reaches 100% speed, the compressor 2 keeps adjusting the frequency according to the refrigeration load, and the hot gas bypass valve 6 keeps closing.
In the refrigerating mode under the protection of the too low evaporating temperature, if the rotating speed of the fan 1 reaches 100 percent of the rotating speed, keeping the rotating speed of the fan 1 unchanged by 100 percent, and starting to reduce the frequency of the compressor 2 at a certain frequency-reducing rate (such as 1 Hz/s) so as to increase the evaporating temperature Tc; when the compressor 2 frequency does not reach the minimum frequency, the hot gas bypass valve 6 remains closed,
if the rotation speed of the fan 1 reaches 100% of the rotation speed and the frequency of the compressor 2 reaches the minimum frequency, keeping the rotation speed of the fan 1 100% and the minimum frequency of the compressor 2 unchanged, opening the hot gas bypass valve 6 and increasing the opening degree of the hot gas bypass valve 6 at a certain valve opening rate (such as 1%/s),
if the fan 1 rotation speed has reached 100% rotation speed, the compressor 2 frequency has reached minimum frequency, and the opening of the hot gas bypass valve 6 has reached 100%, the fan 1 rotation speed 100%, the compressor 2 minimum frequency, and the opening of the hot gas bypass valve 6 are kept unchanged by 100%.
According to the variable frequency air conditioning system, through joint adjustment of the frequency of the compressor, the rotating speed of the fan and the hot gas bypass valve 6, the evaporating temperature of the machine room air conditioner is always higher than the dew point temperature of return air in a refrigerating mode, the refrigerating operation under the dry working condition is realized, the unnecessary repeated loss of energy during humidification and dehumidification caused by passive dehumidification can be avoided, the evaporating temperature is at a higher level, the power consumption of the compressor 2 can be reduced, the energy consumption of the fan 1 can be reduced, the energy efficiency ratio of a refrigerating system is improved, and noise is effectively suppressed. Meanwhile, the evaporator 3 runs under a dry working condition, and the heat exchanger can be an all-aluminum micro-channel heat exchanger, so that the heat exchange performance is improved, copper materials are saved, and the cost is reduced.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. A control method of a variable frequency air conditioner system for refrigerating under a dry working condition is characterized by comprising the following steps: the variable frequency air conditioning system comprises a fan, a compressor, an evaporator, an expansion valve, a condenser, a hot gas bypass valve, a sensor for obtaining evaporation temperature, an air temperature sensor, an air humidity sensor and a controller,
the output end of the compressor is connected with the input end of the condenser, the output end of the condenser is connected with the input end of the expansion valve, the output end of the expansion valve is connected with the input end of the evaporator, the output end of the evaporator is connected with the input end of the compressor, the controlled end of the compressor, the air humidity sensor, the air temperature sensor, the sensor for obtaining the evaporating temperature and the fan are respectively connected with the controller and controlled by the controller,
the sensor for obtaining the evaporating temperature is arranged on the evaporator, the hot gas bypass valve is arranged on a pipeline between the outlet of the compressor and the outlet of the expansion valve, the compressor is a variable capacity compressor, and the fan is an adjustable speed fan capable of steplessly adjusting the air output;
the control method comprises the following steps:
the dry working condition operation with the evaporation temperature Tc higher than the dew point temperature Td is realized through the combined adjustment of the frequency of the compressor, the rotating speed of the fan and the hot gas bypass valve;
detecting the dry bulb temperature Ti and the relative humidity Hi of the air to obtain the dew point temperature Td of the air according to the detected dry bulb temperature Ti and the relative humidity Hi, and starting to enter a refrigeration mode when the dew point temperature Td is in a preset range, wherein the refrigeration mode comprises a normal refrigeration mode and a refrigeration mode under the condition of excessively low evaporation temperature;
in a normal refrigeration mode, the fan and the compressor regulate the rotating speed and the frequency according to the refrigeration load, and the hot gas bypass valve is kept closed; in the refrigerating mode under the protection of the too low evaporation temperature, the sensor for obtaining the evaporation temperature obtains the evaporation temperature Tc of the evaporator, and the fan, the compressor and the hot gas bypass valve are adjusted according to the evaporation temperature Tc, so that the evaporation temperature Tc is not lower than the dew point temperature Td.
2. The control method according to claim 1, characterized in that: a sensor for obtaining the evaporating temperature is mounted on the surface of the heat exchanging fin of the evaporator.
3. The control method according to claim 1, characterized in that: the air temperature sensor and the air humidity sensor are both arranged on the air inlet side of the evaporator.
4. The control method according to claim 1, characterized in that: the hot gas bypass valve is an electronic adjustable flow valve.
5. The control method according to claim 1, characterized in that: when the evaporation temperature Tc is detected to be less than the dew point temperature Td+ lower limit temperature difference, the system enters a refrigeration mode under the protection of the too low evaporation temperature; when the evaporation temperature Tc is detected to be more than or equal to the dew point temperature Td+ upper limit temperature difference, the system exits the refrigeration mode under the protection of the too low evaporation temperature and returns to the normal refrigeration mode.
6. The control method according to claim 1, characterized in that: in a refrigerating mode under the protection of the too low evaporating temperature, the system gradually increases the rotating speed of the fan at a certain accelerating speed so as to increase the evaporating temperature Tc; before the fan speed reaches 100%, the compressor keeps adjusting the frequency according to the refrigeration load, and the hot gas bypass valve keeps closing.
7. The control method according to claim 1, characterized in that: in the refrigerating mode under the protection of the too low evaporating temperature, if the rotating speed of the fan reaches 100%, the rotating speed of the fan is kept to be 100%, the frequency of the compressor is reduced at a certain frequency reducing rate, and the evaporating temperature Tc is increased; when the compressor frequency does not reach the minimum frequency, the hot gas bypass valve remains closed,
if the fan speed reaches 100% speed and the compressor frequency reaches the minimum frequency, keeping the fan speed 100% and the minimum frequency of the compressor unchanged, opening the hot gas bypass valve and increasing the opening degree of the hot gas bypass valve at a certain valve opening rate,
if the fan speed has reached 100% speed, the compressor frequency has reached minimum frequency, and the opening of the hot gas bypass valve has reached 100%, then the fan speed 100%, the compressor minimum frequency, and the hot gas bypass valve opening are maintained unchanged by 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064377.1A CN108105919B (en) | 2018-01-23 | 2018-01-23 | Variable frequency air conditioner system for dry working condition refrigeration and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810064377.1A CN108105919B (en) | 2018-01-23 | 2018-01-23 | Variable frequency air conditioner system for dry working condition refrigeration and control method thereof |
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| CN108105919A CN108105919A (en) | 2018-06-01 |
| CN108105919B true CN108105919B (en) | 2024-03-29 |
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| CN112775715B (en) * | 2020-12-22 | 2022-05-27 | 珠海格力智能装备有限公司 | Cooling device and cooling control method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06257865A (en) * | 1993-03-04 | 1994-09-16 | Hitachi Ltd | Air conditioner |
| CN101158495A (en) * | 2007-08-15 | 2008-04-09 | 阿尔西制冷工程技术（北京）有限公司 | Refrigeration system capable of controlling refrigerating capacity |
| CN101178275A (en) * | 2007-12-05 | 2008-05-14 | 阿尔西制冷工程技术（北京）有限公司 | Refrigerating unit using electronic expansion valve to control temperature |
| CN201163119Y (en) * | 2008-01-22 | 2008-12-10 | 艾默生网络能源有限公司 | Energy-saving air conditioner |
| CN202229351U (en) * | 2011-09-20 | 2012-05-23 | 吴卫华 | Double working condition energy-saving air conditioner special for communication |
| CN103216981A (en) * | 2013-04-28 | 2013-07-24 | 宁波沃弗圣龙环境技术有限公司 | Frostless air handling unit and proportion-integration-differential control method thereof |
| CN203771562U (en) * | 2014-04-09 | 2014-08-13 | 广州天河兰石技术开发有限公司 | Efficient, wide and energy-saving type temperature and humidity working condition adjusting system |
| CN104534605A (en) * | 2015-01-30 | 2015-04-22 | 广州天河兰石技术开发有限公司 | Energy-saving refrigeration device for psychrometer testing room |
| CN107477804A (en) * | 2017-09-12 | 2017-12-15 | 广东美的制冷设备有限公司 | Air conditioner and its humidity control method, device |
| CN207797292U (en) * | 2018-01-23 | 2018-08-31 | 广东海悟科技有限公司 | A kind of frequency-conversion air-conditioning system of dry cooling condition refrigeration |
-
2018
- 2018-01-23 CN CN201810064377.1A patent/CN108105919B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06257865A (en) * | 1993-03-04 | 1994-09-16 | Hitachi Ltd | Air conditioner |
| CN101158495A (en) * | 2007-08-15 | 2008-04-09 | 阿尔西制冷工程技术（北京）有限公司 | Refrigeration system capable of controlling refrigerating capacity |
| CN101178275A (en) * | 2007-12-05 | 2008-05-14 | 阿尔西制冷工程技术（北京）有限公司 | Refrigerating unit using electronic expansion valve to control temperature |
| CN201163119Y (en) * | 2008-01-22 | 2008-12-10 | 艾默生网络能源有限公司 | Energy-saving air conditioner |
| CN202229351U (en) * | 2011-09-20 | 2012-05-23 | 吴卫华 | Double working condition energy-saving air conditioner special for communication |
| CN103216981A (en) * | 2013-04-28 | 2013-07-24 | 宁波沃弗圣龙环境技术有限公司 | Frostless air handling unit and proportion-integration-differential control method thereof |
| CN203771562U (en) * | 2014-04-09 | 2014-08-13 | 广州天河兰石技术开发有限公司 | Efficient, wide and energy-saving type temperature and humidity working condition adjusting system |
| CN104534605A (en) * | 2015-01-30 | 2015-04-22 | 广州天河兰石技术开发有限公司 | Energy-saving refrigeration device for psychrometer testing room |
| CN107477804A (en) * | 2017-09-12 | 2017-12-15 | 广东美的制冷设备有限公司 | Air conditioner and its humidity control method, device |
| CN207797292U (en) * | 2018-01-23 | 2018-08-31 | 广东海悟科技有限公司 | A kind of frequency-conversion air-conditioning system of dry cooling condition refrigeration |
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| CN108105919A (en) | 2018-06-01 |
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