CN108731163A - Wide temperature all-fresh air step-less adjustment refrigerating plant - Google Patents
Wide temperature all-fresh air step-less adjustment refrigerating plant Download PDFInfo
- Publication number
- CN108731163A CN108731163A CN201810707811.3A CN201810707811A CN108731163A CN 108731163 A CN108731163 A CN 108731163A CN 201810707811 A CN201810707811 A CN 201810707811A CN 108731163 A CN108731163 A CN 108731163A
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- Prior art keywords
- refrigeration system
- evaporator
- level
- fresh air
- less adjustment
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- 238000005057 refrigeration Methods 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims description 20
- 230000000694 effects Effects 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 43
- 238000001816 cooling Methods 0.000 description 16
- 238000007791 dehumidification Methods 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010618 wire wrap Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
-
- 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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
Abstract
The invention discloses a kind of wide warm all-fresh air step-less adjustment refrigerating plants, the refrigeration system of evaporator is respectively provided with including three-level, the evaporator of three-level refrigeration system is arranged in air duct, electric heater is equipped in the air duct at every grade of evaporator rear, further include controller, controller is electrically connected with each refrigeration system, each electric heater respectively.Wide warm all-fresh air step-less adjustment can be achieved in the present invention, realizes that wide warm refrigeration work, three-level refrigeration are optionally opened under conditions of operating mode is not severe, has simple in structure, easy to use, easy to maintenance, the high advantage of reliability.
Description
Technical field
The present invention relates to conditioner field, specifically a kind of wide warm all-fresh air step-less adjustment refrigerating plant.
Background technology
Environment progress air conditioning needs air output big in special equipment, and refrigeration needs to accomplish that step-less adjustment, heating need
Multistage adjusting is carried out, return air needs to use all-fresh air, and in addition use environment temperature (- 45 DEG C -55 DEG C) range is wide, wind pushing temperature
It is required that low, dehumidification requirements are reliably stringent.Under worst hot case (such as environment temperature be 55 DEG C), wind pushing temperature also requires relatively low, send
Return air temperature difference extreme value is larger, is difficult to directly reach using single-stage refrigeration.
Currently, the adjusting of cold usually has unloading, electro-thermal equilibrium, variable frequency adjustment.Unloading is typically that multicylinder compressor is closed
A part of cylinder realizes the sectional-regulated of refrigerating capacity, usually there is two grades (50%, 100%) and third gear (33%, 66%, 100%)
It adjusts, can not accomplish the step-less adjustment of cold；Electro-thermal equilibrium is that cold regulation measure is not done in refrigerating circuit, when cold obtained is more
When leading to too low air temperature, air themperature is promoted up to balance extra cold by the heater after evaporator,
, it can be achieved that the step-less adjustment of heating if electrical heating uses SCR control, to playing the role of cold step-less adjustment indirectly,
Compressor fully operates at this time, while electrical heating is also run, therefore electro-thermal equilibrium is least energy-efficient one in several regulative modes
Kind；Variable frequency adjustment is the frequency converter by being connect with compressor to change the frequency of compressor electric motor, and then changes compressor
Rotating speed, to realize the step-less adjustment to cold；Also have the function of reducing compressor start electric current simultaneously；While frequency reducing, pressure
The power of contracting machine equally reduces, the most energy saving in several regulative modes, but the selection of converter module will meet severe work
Make the requirement of environment, environment temperature height is with high requirements and high cost to converter module, and reliability reduces.
Heating need to accomplish step-less adjustment, and heating at present has heat pump heating, fuel Heating and electrical heating.Generally, due to various
The heating combined equipment of the air conditioning of special equipment (such as vehicle) needs work in low temperature environment in the wild, therefore to the system of air conditioning
More stringent requirements are proposed for thermal.And heat pump heating heating effect in the case of -45 DEG C of low temperature is excessively poor, it cannot be to that need to add
The space of heat carries out air conditioning；Fuel heater needs to increase corresponding finned heat exchanger, utilizes combustion heat-exchange principle, heating
Medium in finned heat exchanger, and then the air for flowing through fin is heated, fuel heater controls heat exchange by flow control valve
The flow of medium in device, and then the purpose for adjusting heating amount is played, it can accomplish step-less adjustment, but fuel heater structure is more multiple
Miscellaneous, fault point is more, and reliability is low；Electrical heating is to convert electrical energy into thermal energy using the Joule effect of electric current, is flowed through with heating
The air of heater, there are two types of modes for electrical heating：Electrothermal tube and " PTC " heater, " PTC " is by ceramic heating element parallel connection group
It is formed with ripple aluminum strip through high temperature is cementing after conjunction, electric heating tube is that outer casing stainless steel pipe forms after heating wire wraps up magnesium powder, the two
Characteristic is different in power output, and " PTC " output power changes with the variation of environment temperature and face velocity, in non-
Linearly, and after work 1000h power has certain attenuation, and electric heating tube output power is relative constant, using embedded electric heating
Heating mode, electric heating tube is closely attached with heat exchanger together with, this mode not only effectively improves changing for equipment
The thermal efficiency, and the heat exchange area because increasing heating device and air so that heating device surface temperature substantially reduces, to
It can be effectively prevented the generation of open fire, be easily installed electric safety device, improve the safety electric performance of equipment.
Invention content
The object of the present invention is to provide a kind of wide warm all-fresh air step-less adjustment refrigerating plants, to solve prior art air-conditioning system
The problem of cold, dehumidifying, heating, cold step-less adjustment and environmental Kuznets Curves accuracy.
In order to achieve the above object, the technical solution adopted in the present invention is：
Wide temperature all-fresh air step-less adjustment refrigerating plant, it is characterised in that：The refrigeration system of evaporator is respectively provided with including three-level
System, the evaporator of three-level refrigeration system are set in sequence in air duct successively from front to back, wherein the system where rear double effect evaporator
Cooling system is frequency changing refrigeration system respectively, and electric heater, the most evaporation of rear side are equipped in the air duct between two neighboring evaporator
Device rear also is provided with electric heater in air duct, further includes controller, controller respectively with each refrigeration system, each electric heater
Electrical connection.
The warm all-fresh air step-less adjustment refrigerating plant of the width, it is characterised in that：Every grade of refrigeration system respectively includes gas-liquid
Separator, compressor, condenser, liquid storage device, filter, expansion valve, evaporator, the expansion valve are electric expansion valve, evaporation
Device one end passes sequentially through gas-liquid separator, compressor, condenser, liquid storage device, filter, expansion valve and the evaporator other end and connects
Constitute circuit, and condenser is each configured with axial flow blower in every grade of refrigeration system, in air duct after system belonging to double effect evaporator
Compressor is frequency-changeable compressor in cooling system；The controller respectively in each refrigeration system compressor, axial flow blower,
Expansion valve is electrically connected.
The warm all-fresh air step-less adjustment refrigerating plant of the width, it is characterised in that：The import of each evaporator, each condensation
The import of device is respectively equipped with temperature sensor, and each temperature sensor is electrically connected with the controller respectively.
The warm all-fresh air step-less adjustment refrigerating plant of the width, it is characterised in that：Each evaporator, each electric heater exist
A centrifugal blower is shared in air duct, the controller is electrically connected with centrifugal blower.
The warm all-fresh air step-less adjustment refrigerating plant of the width, it is characterised in that：The boot sequence of three-level refrigeration system is
Start successively from back to front, and startup rear stage system is judged whether according to temperature when previous stage refrigeration system starts by controller
Cooling system.
Three-level refrigeration system can be used in the present invention, and the evaporator of three-level refrigeration system is successively set in air duct, and three-level
Refrigeration system is optionally opened under conditions of operating mode is not severe, and when wherein certain grade breaks down, other classifications remain to protect
The certain work of card system, three-level refrigeration system are more energy efficient compared with single level system reliable.But merely with variable frequency adjustment it is also uneconomical,
Reliably, be to ensure temperature-controlled precision, while taking into account cost and reliability, therefore previous stage is freezed using fixed frequency, behind two, three tier structure
Cold to use variable frequency adjustment, a failure still ensures that stepless adjustable, and third level refrigeration is preferential to open, according to environmental working condition condition according to
Secondary second level refrigeration of opening is freezed with the first order；In addition heating mode is using multi gear electrical heating and electrically heated using silicon-controlled realization
Step-less adjustment, in order to improve system reliability and interchangeability, electrical heating is set as three groups, after being respectively placed in evaporators at different levels
Side.
Refrigeration work pattern of the present invention：By third level refrigeration system, second level refrigeration system, first order refrigeration system it is suitable
Sequence is opened successively from back to front.Third level refrigeration system is run, and inner compressor uses frequency conversion soft start, after startup first
Judged further according to actual value and setting value after running 10min with 50Hz, determines frequency.Evaporating pressure and temperature value are to electricity
The aperture of sub- expansion valve is controlled.And in compressor start, initial pressure is too high or too low, high load capacity, underload etc. no
With the aperture that can efficiently, accurately adjust electric expansion valve under operating mode, frequency modulation is carried out with the speed of 2Hz/min, is adjusted to 70Hz,
It such as still needs to freeze, then opens second level refrigeration system, determine that compressor adds unloading situation according to temperature gap after ten minutes, 20 points
Unlatching first order refrigeration system is decided whether according to temperature gap after clock.
Dehumidification work pattern of the present invention：Three-level refrigerated dehumidification：Outdoor fresh air → first order cooling and dehumidifying → (heating) → the
Two level cooling and dehumidifying → (heating) → third level cooling and dehumidifying (stepless) → (heating)；Two level refrigerated dehumidification (20 work of refrigeration system
Make)：Outdoor fresh air → second level cooling and dehumidifying → (rising again) → third level cooling and dehumidifying (stepless) → (heating)；Level-one refrigeration is removed
Wet (work of refrigeration system 10)：Outdoor fresh air → third pole cooling and dehumidifying (stepless) → (heating)
The present invention heats operating mode：Outdoor fresh air heats
As shown from the above technical solution, the present invention increases three-level vapour pressure on the basis of one-stage steam compressed refrigeration cycle
Contraction SAPMAC method, three-level refrigeration is optionally opened under conditions of operating mode is not severe, when wherein certain grade breaks down,
He, which is classified, still ensures that the certain work of system, and three-level system is more energy efficient compared with single level system reliable.The present invention adds in single-stage electricity
Increase three-level electrical heating on the basis of heat, can realize dehumidification requirements at low ambient temperatures.Pass through SCR control
Electrical heating realizes that the multistage of heating is adjusted.Level-one uses not frequency conversion in three-level refrigeration, and two, three-level may be implemented using frequency conversion in height
Three-level refrigeration needs to realize refrigeration cool-down in the case of full open under warm operating mode, advantageously reduces cost, and it is completely new to realize wide temperature
Wind step-less adjustment, improves reliability.
The beneficial effects of the present invention are：
1) it realizes wide warm all-fresh air step-less adjustment, realizes wide warm refrigeration work, realize cooling heat exchange under lower temperature, realize
Multistage heating is realized in dehumidifying.
2) three-level refrigeration is optionally opened under conditions of operating mode is not severe, when wherein certain grade breaks down, other
Classification still ensures that the certain work of system, three-level system are more energy efficient compared with single level system reliable.
3) simple in structure, easy to use, easy to maintenance, reliability is high.
Description of the drawings
Fig. 1 is the system schematic of the present invention.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, wide temperature all-fresh air step-less adjustment refrigerating plant, by first order refrigeration system 10, first order electrical heating
Device 1, second level refrigeration system 20, second level electric heater 2, third level refrigeration system 30, third level electric heater 3 form, and add
Thermal recovery SCR control electric heater, after first order electric heater 1 is placed in the evaporator 16 of first order refrigeration system 10, second
After grade evaporator 26 is placed in first order electric heater 1, after second level electric heater 2 is placed in second level evaporator 26, the third level is steamed
After hair device 36 is placed in second level electric heater 2, after third level electric heater 3 is placed in third evaporator 36, first evaporator
16, first order electric heater 1, second level evaporator 26, second level electric heater 2, third evaporator 36, third level electrical heating
Device 3 is arranged in by tandem in air duct, and a centrifugal blower 7 is shared in air duct.
First order refrigeration system 10 is by compressor 11, condenser 12, liquid storage device 13, filter 14, expansion valve 15, the first order
Evaporator 16, gas-liquid separator 17 pass sequentially through piping connection into circuit, and expansion valve 15 uses electric expansion valve.Freeze the second level
System 20 is by compressor 21, condenser 22, liquid storage device 23, filter 24, expansion valve 25, first evaporator 26, gas-liquid separation
Device 27 passes sequentially through piping connection into circuit, and compressor 21 uses frequency-changeable compressor, expansion valve 25 to use electric expansion valve.Third
Grade refrigeration system 30 is by compressor 31, condenser 32, liquid storage device 33, filter 34, expansion valve 35, third evaporator 36, gas
Liquid/gas separator 37 passes sequentially through piping connection into circuit, and compressor 31 uses frequency-changeable compressor, expansion valve 35 to use electronic expansion
Valve.
Each evaporator air inlet is equipped with the first temperature sensor, and each condenser air inlet any place is passed equipped with second temperature
Sensor, compressor 11, compressor 21, compressor 31, axial flow blower 4, axial flow blower 5, axial flow blower 6, centrifugal blower 7, expansion
Valve 15, expansion valve 25, expansion valve 35, first order electric heater 1, second level electric heater 2, third level electric heater 3 respectively with
Controller is connected.
Refrigeration system workflow：34 → electric expansion valve of compressor 31 → condenser, 32 → liquid storage device, 33 → filter 35
36 → gas-liquid separator of → evaporator, 37 → compressor 31；23 → filter of compressor 21 → condenser, 22 → liquid storage device 24 → electricity
26 → gas-liquid separator of sub- 25 → evaporator of expansion valve, 27 → compressor 21；Compressor 21 → condenser, 22 → liquid storage device, 23 → mistake
27 → compressor of filter 24 → electric expansion valve, 25 → evaporator, 26 → gas-liquid separator 21.
Refrigeration work pattern of the present invention：It is opened by the sequence of refrigeration system 30, refrigeration system 20, refrigeration system 10.
Refrigeration system 30 run, compressor 31 use frequency conversion soft start, after startup first with 50Hz run 10min after further according to actual value with
Setting value is judged, determines frequency.Evaporating pressure and temperature value control the aperture of electric expansion valve.And it is pressing
Under the different operating modes such as contracting machine starts, initial pressure is too high or too low, high load capacity, underload can efficiently, accurately adjust electronics
The aperture of expansion valve, frequency modulation are carried out with the speed of 2Hz/min, are adjusted to 70Hz, such as still need to freeze, then open refrigeration system 20,10
It determines that compressor adds unloading situation according to temperature gap after minute, is decided whether to open refrigeration system after twenty minutes according to temperature gap
System 10.
Dehumidification work pattern of the present invention：
1) three-level refrigerated dehumidification (work of refrigeration system 30)：Outdoor fresh air → first order cooling and dehumidifying → (heating) → second
Grade cooling and dehumidifying → (heating) → third level cooling and dehumidifying (stepless) → (heating)
2) two level refrigerated dehumidification (work of refrigeration system 20)：Outdoor fresh air → second level cooling and dehumidifying → (rising again) → third
Grade cooling and dehumidifying (stepless) → (heating)
3) level-one refrigerated dehumidification (work of refrigeration system 10)：Outdoor fresh air → third pole cooling and dehumidifying (stepless) → (heating)
The present invention heats operating mode：Outdoor fresh air → heating.
Claims (5)
1. wide temperature all-fresh air step-less adjustment refrigerating plant, it is characterised in that：The refrigeration system of evaporator is respectively provided with including three-level,
The evaporator of three-level refrigeration system is set in sequence in air duct successively from front to back, wherein the refrigeration system where rear double effect evaporator
System is frequency changing refrigeration system respectively, is equipped with electric heater in the air duct between two neighboring evaporator, after the most evaporator of rear side
It also is provided with electric heater in Fang Fengdao, further includes controller, controller is electrically connected with each refrigeration system, each electric heater respectively
It connects.
2. wide warm all-fresh air step-less adjustment refrigerating plant according to claim 1, it is characterised in that：Every grade of refrigeration system point
Not Bao Kuo gas-liquid separator, compressor, condenser, liquid storage device, filter, expansion valve, evaporator, the expansion valve be electronics it is swollen
Swollen valve, evaporator one end pass sequentially through gas-liquid separator, compressor, condenser, liquid storage device, filter, expansion valve and evaporator
The other end connects and composes circuit, and condenser is each configured with axial flow blower in every grade of refrigeration system, in air duct after double flash evaporation
Compressor is frequency-changeable compressor in refrigeration system belonging to device；The controller respectively with the compression in each refrigeration system
Machine, axial flow blower, expansion valve electrical connection.
3. wide warm all-fresh air step-less adjustment refrigerating plant according to claim 2, it is characterised in that：Each evaporator into
The import of mouth, each condenser is respectively equipped with temperature sensor, and each temperature sensor is electrically connected with the controller respectively.
4. wide warm all-fresh air step-less adjustment refrigerating plant according to claim 1, it is characterised in that：It is each evaporator, each
A electric heater shares a centrifugal blower in air duct, and the controller is electrically connected with centrifugal blower.
5. wide warm all-fresh air step-less adjustment refrigerating plant according to claim 1, it is characterised in that：Three-level refrigeration system
Boot sequence is to start successively from back to front, and judge whether to open according to temperature when previous stage refrigeration system starts by controller
Dynamic rear stage refrigeration system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707811.3A CN108731163A (en) | 2018-07-02 | 2018-07-02 | Wide temperature all-fresh air step-less adjustment refrigerating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707811.3A CN108731163A (en) | 2018-07-02 | 2018-07-02 | Wide temperature all-fresh air step-less adjustment refrigerating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108731163A true CN108731163A (en) | 2018-11-02 |
Family
ID=63925630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810707811.3A Withdrawn CN108731163A (en) | 2018-07-02 | 2018-07-02 | Wide temperature all-fresh air step-less adjustment refrigerating plant |
Country Status (1)
| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469953A (en) * | 2018-11-21 | 2019-03-15 | 合肥天鹅制冷科技有限公司 | Wide temperature refrigerated dehumidification device |
| CN112268321A (en) * | 2020-10-26 | 2021-01-26 | 珠海格力电器股份有限公司 | Mixed working medium refrigerating system and dehumidifier |
| CN113280521A (en) * | 2021-04-22 | 2021-08-20 | 北京航天发射技术研究所 | Movable full fresh air conditioner |
| CN117553364A (en) * | 2024-01-09 | 2024-02-13 | 深圳中集天达吉荣航空制冷有限公司 | Aircraft ground air conditioning system based on phase change cold accumulation and control method |
-
2018
- 2018-07-02 CN CN201810707811.3A patent/CN108731163A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469953A (en) * | 2018-11-21 | 2019-03-15 | 合肥天鹅制冷科技有限公司 | Wide temperature refrigerated dehumidification device |
| CN109469953B (en) * | 2018-11-21 | 2023-11-24 | 合肥天鹅制冷科技有限公司 | Wide-temperature refrigerating and dehumidifying device |
| CN112268321A (en) * | 2020-10-26 | 2021-01-26 | 珠海格力电器股份有限公司 | Mixed working medium refrigerating system and dehumidifier |
| CN113280521A (en) * | 2021-04-22 | 2021-08-20 | 北京航天发射技术研究所 | Movable full fresh air conditioner |
| CN117553364A (en) * | 2024-01-09 | 2024-02-13 | 深圳中集天达吉荣航空制冷有限公司 | Aircraft ground air conditioning system based on phase change cold accumulation and control method |
| CN117553364B (en) * | 2024-01-09 | 2024-04-02 | 深圳中集天达吉荣航空制冷有限公司 | Aircraft ground air conditioning system based on phase change cold accumulation and control method |
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Application publication date: 20181102 |