CN106091458A - Integral type high temperature frequency conversion heat pump heating air conditioning system - Google Patents
Integral type high temperature frequency conversion heat pump heating air conditioning system Download PDFInfo
- Publication number
- CN106091458A CN106091458A CN201610653350.7A CN201610653350A CN106091458A CN 106091458 A CN106091458 A CN 106091458A CN 201610653350 A CN201610653350 A CN 201610653350A CN 106091458 A CN106091458 A CN 106091458A
- Authority
- CN
- China
- Prior art keywords
- frequency conversion
- valve
- high temperature
- heat pump
- air conditioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of air conditioning system, specifically a kind of integral type high temperature frequency conversion heat pump heating air conditioning system, including frequency conversion second vapor injection screw compressor, plate type heat exchanger, fin condenser, evaporator fin, main road heating power expansion valve, normally open type magnetic valve, gas-liquid separator, device for drying and filtering, normally closed solenoid valve, branch road heating power expansion valve, axial flow condensation fan, axial flow evaporation fan, pipeline, high pressure detection valve, low pressure detection valve, high-pressure switch, low pressure switch and liquid-sighting glass；Invention is for the shortcoming overcoming prior art, use integral type high temperature frequency conversion heat pump heating air conditioning system, compressor uses high temperature heat pump special frequency conversion second vapor injection screw compressor, the discharge capacity of compressor is controlled by regulation compressor operation frequency, dynamically regulate the heating capacity of condensation side, thus realize the control to barn internal temperature, it is ensured that the temperature-controlled precision of barn.
Description
Technical field
The present invention relates to a kind of air conditioning system, specifically a kind of integral type high temperature frequency conversion heat pump heating air conditioning system.
Background technology
Existing high temperature heat pump heats air conditioning unit that is vapor-compression cycle air source heat pump air-conditioner unit.Unit itself consumes
Part electric energy, major part heat is to absorb surrounding medium--the heat in air, improves temperature by heat-transfer working medium blood circulation
The backward closing barn release heat needing heating.Traditional type heat pump unit mainly by compressor, condenser, vaporizer,
Condenser fan and evaporator fan five part composition.Heat pump unit generally uses split-type design, i.e. compressor, steaming
Send out device, evaporation fan is designed to an off-premises station, condenser and condensation fan composition indoor set.Indoor set heats with high temperature barn
Room commissure, it is achieved high-temperature heating.The heat pump unit of prior art typically uses double loop heating, i.e. by two functions
Complete heating composes in parallel.Each system can be with independent operating, it is also possible to run simultaneously, and control system is according to the control preset
Parameter processed selects to need the heating of start and stop, to mate barn heating capacity needed for different periods and the rate of heat addition, reduces
Barn dry-bulb temperature fluctuates.
The high temperature heat pump heating air-conditioning of prior art generally there are following bad:
1, existing high temperature heat pump heating air-conditioning typically uses split type, and heat pump condenser is arranged in barn heating chamber, passes through copper
Pipe is connected with off-premises station (vaporizer).In device installation process, especially condenser is installed extremely inconvenient, installation workload
Relatively big, and the copper pipe connecting condenser and vaporizer is longer, SR and heat loss are bigger.
2, existing high temperature heat pump heating air-conditioning heating system dual system typically uses two invariable frequency compressors, and system A is main
Heating system, system B is auxiliary heating system, and system A and system B complete the control to barn temperature jointly, and dual system is simultaneously
Start, is heated in barn inside, when barn actual temperature is close or slightly beyond the temperature set, by start stop system B
Implement the fine setting to heating capacity, reach the temperature accuracy needed for barn.Owing to the regulation of temperature accuracy is by frequent start-stop B system
Compressor, makes B system compressor operation reliability reduce, and invariable frequency compressor frequent start-stop, the thermal inertia of system causes baking
Room temperature fluctuation is big, easily beyond the temperature accuracy set, is unfavorable for the realization of baking process.
3, existing high temperature heat pump heating air conditioning system, when barn is close to 70 DEG C of high temperature, owing to condensation temperature is too high, compression
Machine pressure at expulsion and delivery temperature are the most all close to coolant (R134a) critical point, and compressor load, close to the limit, reduces compressor
Exhaust efficiency, thus it is extremely difficult to predetermined barn temperature.
4, prior art dual system power consumption is big, product Energy Efficiency Ratio low (comprehensive COP is not more than 4), does not meets energy-saving and emission-reduction reason
Read.
Summary of the invention
Present invention aim to overcome that the defect that above-mentioned prior art exists and a kind of integral type high temperature frequency conversion heat provided
Pump heating air conditioning system.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that:
Integral type high temperature frequency conversion heat pump heating air conditioning system, including frequency conversion second vapor injection screw compressor, plate type heat exchanger, fin
Condenser, evaporator fin, main road heating power expansion valve, normally open type magnetic valve, gas-liquid separator, device for drying and filtering, normally closed type electricity
Magnet valve, branch road heating power expansion valve, axial flow condensation fan, axial flow evaporation fan, pipeline, high pressure detection valve, low pressure detection valve, high pressure
Pressure switch, low pressure switch and liquid-sighting glass；According to the flow direction of cold-producing medium, mended in the middle of described frequency conversion by pipeline
Gas screw compressor is connected with described fin condenser, and cold-producing medium is formed first after being condensed by described fin condenser and follows
Loop back path and the second closed circuit, the first described closed circuit is to be sequentially connected with the import one of described plate type heat exchanger and go out
Mouth one returns to frequency conversion second vapor injection screw compressor, and second described closed circuit is for passing sequentially through normally closed solenoid valve, propping up
Road heating power expansion valve, the import two of plate type heat exchanger and outlet two, device for drying and filtering, liquid-sighting glass, main road heating power expansion valve, fin
Frequency conversion second vapor injection screw compressor is returned to after vaporizer, gas-liquid separator, low pressure detection valve and low pressure switch；Described
Axial flow condensation fan is installed and is installed mutually with described fin condenser, described axial flow evaporation fan and described evaporator fin
Install mutually.
Preferably, described normally open type magnetic valve air inlet and gas outlet are arranged on device for drying and filtering by pipeline respectively
On the gas outlet of air inlet and main road heating power expansion valve.
Compared with prior art, the invention have the benefit that
The present invention, in order to overcome the shortcoming of prior art, uses integral type high temperature frequency conversion heat pump heating air conditioning system, and compressor is adopted
With high temperature heat pump special frequency conversion second vapor injection screw compressor, controlled the row of compressor by regulation compressor operation frequency
Amount, dynamically regulates the heating capacity of condensation side, thus realizes the control to barn internal temperature, it is ensured that the temperature-controlled precision of barn.For
Ensureing the reliability of high temperature mode, native system have employed distinctive Gas-supplying enthalpy-increasing mode, after partial condensation, coolant is through branch road
After heating power expansion valve reducing pressure by regulating flow, enter plate type heat exchanger and carry out heat exchange with another part condensation coolant, reduce cold further
Solidifying coolant pressure and temperature, thus ensure the unit condensation effect when high temperature, reduce compressor high temperature load, it is ensured that unit
Reliability.
Accompanying drawing explanation
Fig. 1 is that integral type high temperature frequency conversion heat pump of the present invention heats air conditioning system connection diagram.
In figure: 1-frequency conversion second vapor injection screw compressor；2-plate type heat exchanger；3-fin condenser；4-evaporator fin；
5-main road heating power expansion valve；6-normally open type magnetic valve；7-gas-liquid separator；8-device for drying and filtering；9-normally closed solenoid valve；10-
Branch road heating power expansion valve；11-axial flow condensation fan；12-axial flow evaporation fan；13-pipeline；14-high pressure detection valve；15-low pressure
Detection valve；16-high-pressure switch；17-low pressure switchs；18-liquid-sighting glass.
Detailed description of the invention
Seeing shown in accompanying drawing 1, integral type high temperature frequency conversion heat pump heating air conditioning system, including frequency conversion second vapor injection scroll compression
Machine 1, plate type heat exchanger 2, fin condenser 3, evaporator fin 4, main road heating power expansion valve 5, normally open type magnetic valve 6, gas-liquid are divided
From device 7, device for drying and filtering 8, normally closed solenoid valve 9, branch road heating power expansion valve 10, axial flow condensation fan 11, axial flow evaporation fan
12, pipeline 13, high pressure detection valve 14, low pressure detection valve 15, high-pressure switch 16, low pressure switch 17 and liquid-sighting glass 18；
According to the flow direction of cold-producing medium, by pipeline 13 by described frequency conversion second vapor injection screw compressor 1 and described fin cold
Condenser 3 is connected, and cold-producing medium forms the first closed circuit and the second closed circuit, institute after being condensed by described fin condenser 3
The first closed circuit stated is that import one 2-1 and outlet one 2-2 being sequentially connected with described plate type heat exchanger 2 returns in the middle of frequency conversion
QI invigorating screw compressor 1, second described closed circuit for pass sequentially through normally closed solenoid valve 9, branch road heating power expansion valve 10,
Import two 2-3 of plate type heat exchanger 2 and outlet two 2-4, device for drying and filtering 8, liquid-sighting glass 18, main road heating power expansion valve 5, fin steam
Frequency conversion second vapor injection screw compressor 1 is returned to after sending out device 4, gas-liquid separator 7, low pressure detection valve 15 and low pressure switch 17；
Described axial flow condensation fan 11 is installed and is installed with described fin condenser 3 phase, and described axial flow evaporation fan 12 is with described
Evaporator fin 4 phase install.
Preferably, described normally open type magnetic valve 6 air inlet and gas outlet are arranged on dry filter by pipeline 13 respectively
On the gas outlet of the air inlet of device 8 and main road heating power expansion valve 5.
The operation principle of the present invention is as follows:
The gas coolant of the High Temperature High Pressure that frequency conversion second vapor injection screw compressor 1 is discharged, passes sequentially through high-pressure switch 16, height
Pressure detection valve 14 enters fin condenser 3, and under the effect of axial flow condensation fan 11, the gas coolant of High Temperature High Pressure is at fin cold
Undergo phase transition in condenser 3 and be condensed into high-pressure gas-liquid mixture, form the through fin condenser 3 condensed high-pressure gas-liquid mixture
One closed circuit and the second closed circuit, the first described closed circuit is that a part of high-pressure gas-liquid mixture is directly entered board-like
Import one 2-1 of heat exchanger 2, being returned in frequency conversion second vapor injection screw compressor 1 by outlet one 2-2 of plate type heat exchanger 2；Institute
The second closed circuit stated be a part of high-pressure gas-liquid mixture pass sequentially through normally closed solenoid valve 9, branch road heating power expansion valve 10,
Import two 2-3 of plate type heat exchanger 2 and outlet two 2-4, device for drying and filtering 8, liquid-sighting glass 18, main road heating power expansion valve 5, fin steam
Frequency conversion second vapor injection screw compressor 1 is returned to after sending out device 4, gas-liquid separator 7, low pressure detection valve 15 and low pressure switch 17
In.In the first closed circuit, high-pressure gas-liquid mixture is evaporated forming gaseous refrigerant at plate type heat exchanger 2 and flows back to frequency conversion
Second vapor injection screw compressor 1.In the second closed circuit, high-pressure gas-liquid mixture is evaporated being formed at plate type heat exchanger 2
Carrying out throttling again by main road heating power expansion valve 5 after gaseous refrigerant and form liquid refrigerant, liquid refrigerant passes through fin
During vaporizer 4, under the effect of axial flow evaporation fan 12, produce evaporative phase-change, absorb amount of heat and become gaseous refrigerant；
Gaseous refrigerant now is again by returning in the middle of frequency conversion after gas-liquid separator 7, low pressure detection valve 15 and low pressure switch 17
In QI invigorating screw compressor 1.
Integral type high temperature frequency conversion heat pump of the present invention heating air conditioning system is in order to ensure that system is because can put down after hang-up moment
Weighing apparatus high and low pressure side pressure, starts as early as possible, and the air inlet of device for drying and filtering 8 is in parallel with on the gas outlet of main road heating power expansion valve 5 even
Connect a normally open type magnetic valve 6, to realize the rapid regulation to pressure.Simultaneously in order to protect the safety of system, in system also
Devise high pressure detection valve 14, low pressure detection valve 15, high-pressure switch 16, low pressure switch 17 and liquid-sighting glass 18.
Claims (2)
1. integral type high temperature frequency conversion heat pump heating air conditioning system, including frequency conversion second vapor injection screw compressor (1), plate type heat exchanger
(2), fin condenser (3), evaporator fin (4), main road heating power expansion valve (5), normally open type magnetic valve (6), gas-liquid separator
(7), device for drying and filtering (8), normally closed solenoid valve (9), branch road heating power expansion valve (10), axial flow condensation fan (11), axial flow steam
Send out blower fan (12), pipeline (13), high pressure detects valve (14), low pressure detects valve (15), high-pressure switch (16), low pressure are opened
Close (17) and liquid-sighting glass (18)；It is characterized in that: according to the flow direction of cold-producing medium, by pipeline (13) by described frequency conversion
Between QI invigorating screw compressor (1) be connected with described fin condenser (3), cold-producing medium is cold by described fin condenser (3)
Forming the first closed circuit and the second closed circuit after Ning, the first described closed circuit is to be sequentially connected with described plate-type heat-exchange
Import one (2-1) and outlet one (2-2) of device (2) return to frequency conversion second vapor injection screw compressor (1), second described circulation
Loop for pass sequentially through normally closed solenoid valve (9), branch road heating power expansion valve (10), the import two (2-3) of plate type heat exchanger (2) and
Outlet two (2-4), device for drying and filtering (8), liquid-sighting glass (18), main road heating power expansion valve (5), evaporator fin (4), gas-liquid separation
Frequency conversion second vapor injection screw compressor (1) is returned to after device (7), low pressure detection valve (15) and low pressure switch (17)；Described
Axial flow condensation fan (11) is installed and is installed mutually with described fin condenser (3), and described axial flow evaporation fan (12) is with described
Evaporator fin (4) install mutually.
Integral type high temperature frequency conversion heat pump the most according to claim 1 heating air conditioning system, it is characterised in that: described is normally opened
Formula electromagnetic valve (6) air inlet and gas outlet are arranged on air inlet and the main road heat of device for drying and filtering (8) respectively by pipeline (13)
On the gas outlet of power expansion valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610653350.7A CN106091458A (en) | 2016-08-10 | 2016-08-10 | Integral type high temperature frequency conversion heat pump heating air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610653350.7A CN106091458A (en) | 2016-08-10 | 2016-08-10 | Integral type high temperature frequency conversion heat pump heating air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106091458A true CN106091458A (en) | 2016-11-09 |
Family
ID=57455529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610653350.7A Pending CN106091458A (en) | 2016-08-10 | 2016-08-10 | Integral type high temperature frequency conversion heat pump heating air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106091458A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763776A (en) * | 2017-11-20 | 2018-03-06 | 珠海格力电器股份有限公司 | Air Conditioning Unit and Refrigerant Migration Control Method |
| CN110848845A (en) * | 2019-11-18 | 2020-02-28 | 珠海格力电器股份有限公司 | Air-supplementing enthalpy-increasing heat pump system, control method and air conditioner |
| CN112577172A (en) * | 2019-09-30 | 2021-03-30 | 杭州三花研究院有限公司 | Refrigeration control method and device of air conditioning system, storage medium and air conditioning system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5819551A (en) * | 1995-08-02 | 1998-10-13 | Matsushita Electric Industrial Co., Ltd. | Air conditioning apparatus for a vehicle |
| CN201488279U (en) * | 2009-09-07 | 2010-05-26 | 浙江正理生能科技有限公司 | Air source low-temperature heat pump water heater |
| CN102252412A (en) * | 2010-05-17 | 2011-11-23 | 海尔集团公司 | Freon-free frequency-conversion air conditioner system |
| CN102878615A (en) * | 2012-10-16 | 2013-01-16 | 四川依米康环境科技股份有限公司 | Variable frequency air conditioning unit |
| CN103017503A (en) * | 2012-12-28 | 2013-04-03 | 广州德能热源设备有限公司 | Split type heat pump drying machine set |
| CN203595375U (en) * | 2013-06-26 | 2014-05-14 | 佛山市瑞海制冷设备有限公司 | Frequency-conversion high-temperature air heat pump drying system |
| CN204730581U (en) * | 2015-07-03 | 2015-10-28 | 河南天赫伟业能源科技有限公司 | A kind of solar energy assists intelligent high temperature heat pump drying system |
| CN204943633U (en) * | 2015-09-16 | 2016-01-06 | 江苏天舒电器有限公司 | A kind of source pump for radiator heating |
| JP2016133290A (en) * | 2015-01-22 | 2016-07-25 | 三菱電機株式会社 | Refrigeration cycle device |
| CN205980418U (en) * | 2016-08-10 | 2017-02-22 | 合肥海瑞弗机房设备有限公司 | Integral type high temperature frequency conversion heat pump heating air conditioning system |
-
2016
- 2016-08-10 CN CN201610653350.7A patent/CN106091458A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5819551A (en) * | 1995-08-02 | 1998-10-13 | Matsushita Electric Industrial Co., Ltd. | Air conditioning apparatus for a vehicle |
| CN201488279U (en) * | 2009-09-07 | 2010-05-26 | 浙江正理生能科技有限公司 | Air source low-temperature heat pump water heater |
| CN102252412A (en) * | 2010-05-17 | 2011-11-23 | 海尔集团公司 | Freon-free frequency-conversion air conditioner system |
| CN102878615A (en) * | 2012-10-16 | 2013-01-16 | 四川依米康环境科技股份有限公司 | Variable frequency air conditioning unit |
| CN103017503A (en) * | 2012-12-28 | 2013-04-03 | 广州德能热源设备有限公司 | Split type heat pump drying machine set |
| CN203595375U (en) * | 2013-06-26 | 2014-05-14 | 佛山市瑞海制冷设备有限公司 | Frequency-conversion high-temperature air heat pump drying system |
| JP2016133290A (en) * | 2015-01-22 | 2016-07-25 | 三菱電機株式会社 | Refrigeration cycle device |
| CN204730581U (en) * | 2015-07-03 | 2015-10-28 | 河南天赫伟业能源科技有限公司 | A kind of solar energy assists intelligent high temperature heat pump drying system |
| CN204943633U (en) * | 2015-09-16 | 2016-01-06 | 江苏天舒电器有限公司 | A kind of source pump for radiator heating |
| CN205980418U (en) * | 2016-08-10 | 2017-02-22 | 合肥海瑞弗机房设备有限公司 | Integral type high temperature frequency conversion heat pump heating air conditioning system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763776A (en) * | 2017-11-20 | 2018-03-06 | 珠海格力电器股份有限公司 | Air Conditioning Unit and Refrigerant Migration Control Method |
| CN112577172A (en) * | 2019-09-30 | 2021-03-30 | 杭州三花研究院有限公司 | Refrigeration control method and device of air conditioning system, storage medium and air conditioning system |
| CN110848845A (en) * | 2019-11-18 | 2020-02-28 | 珠海格力电器股份有限公司 | Air-supplementing enthalpy-increasing heat pump system, control method and air conditioner |
| CN110848845B (en) * | 2019-11-18 | 2024-02-20 | 珠海格力电器股份有限公司 | Air supplementing and enthalpy increasing heat pump system, control method and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102538273B (en) | Vapor-injected air-conditioning system, vapor-injected air-conditioning control method and air-conditioner | |
| WO2019091241A1 (en) | Cooling circulation system for air conditioning, and air conditioner | |
| CN104061705B (en) | Two-stage compression air conditioning system and control method thereof | |
| CN102466374B (en) | Heat pump type water heating apparatus | |
| CN104154692B (en) | A kind of novel Gas-supplying enthalpy-increasing system and control method thereof | |
| CN106016545A (en) | Power type heat pipe and air conditioner integrated machine | |
| CN103615836B (en) | A kind of screw total heat recovery air-cooled heat-pump air-conditioner group | |
| CN108692478B (en) | Air conditioning system and control method thereof | |
| CN103344016A (en) | Energy-saving air conditioner for machine room | |
| CN101943449B (en) | Dual-cycle machine room energy-saving air conditioner | |
| CN1982798A (en) | Air supplementing system and air supplementing control method for compressor | |
| CN106091458A (en) | Integral type high temperature frequency conversion heat pump heating air conditioning system | |
| CN202432744U (en) | Air-supply enthalpy-adding air conditioning system and air conditioner | |
| CN105758045A (en) | Ultralow-temperature overlapped triple generation heat pump unit | |
| CN108155439B (en) | Air conditioner battery cooling single cooling system and control method | |
| CN205980418U (en) | Integral type high temperature frequency conversion heat pump heating air conditioning system | |
| CN113720034A (en) | Air conditioner circulation system and control method of air conditioner | |
| CN213089944U (en) | Constant temperature refrigerating plant | |
| CN101625176B (en) | Quasi-tertiary compressed air source hot pump system | |
| CN101324382A (en) | Automobile heat pump air conditioner system | |
| CN206291546U (en) | The water-cooling device of temperature control is carried out using magnetic valve bypass waterway | |
| CN202338963U (en) | Air conditioning system special for textile laboratory | |
| CN201748574U (en) | Double-circulating type machine room energy saving air conditioner | |
| CN208222889U (en) | The refrigeration system of variable-flow single stage compress circulation and two-stage compression cycle can be achieved | |
| CN203375568U (en) | Machine room energy-saving air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |