CN109539614B - A kind of air-conditioning system and its energy adjustment method - Google Patents
A kind of air-conditioning system and its energy adjustment method Download PDFInfo
- Publication number
- CN109539614B CN109539614B CN201811334191.XA CN201811334191A CN109539614B CN 109539614 B CN109539614 B CN 109539614B CN 201811334191 A CN201811334191 A CN 201811334191A CN 109539614 B CN109539614 B CN 109539614B
- Authority
- CN
- China
- Prior art keywords
- air
- conditioning system
- energy adjustment
- condenser
- solenoid valve
- 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.)
- Active
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
- F25B1/00—Compression machines, plants or systems with non-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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- 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
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/027—Condenser control arrangements
-
- 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
- F25B2600/00—Control issues
- F25B2600/01—Timing
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2519—On-off valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning system and its energy adjustment methods.The air-conditioning system includes compressor, condenser, fluid reservoir and an expansion drum, a reversal valve is equipped in the middle part of the condenser tubes, refrigerant is connected to by the reversal valve and pipeline with the bottom of the expansion drum, the top of the expansion drum is connected to by pipeline and the first solenoid valve with the suction pipe of the compressor, it further include the liquid feeding pipeline of connection expansion pot bottom and liquid storage pot bottom, which is equipped with second solenoid valve.In refrigeration system of the present invention applied to no capacity modulated compressor unit, not only avoid due to the pressure loss caused by changing flow, and be conducive to improve oil return situation.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of air-conditioning systems and its energy adjustment method.
Background technique
The capacity regulation method of helical-lobe compressor generally uses plunger, slide valve, variable-frequency motor to adjust.For the spiral shell of small displacement
Bar compressor suffers from the limitation in smaller body space, is designing since plunger and two kinds of arragement constructions of slide valve are complex
It is very big with difficulty on production and processing technology.And use variable-frequency motor, will lead to cost is substantially increased, often solve compressor at
This, while bringing the extraneous expense in frequency control.Therefore the helical-lobe compressor of small displacement, through the side frequently with no capacity regulating
Case is designed, and can not accurately match the variation of actual load, and the thick of startup-shutdown can only be carried out in the big section orientation of setting
Slightly control.
There are two types of the energy level regulative modes generallyd use using the unit of such no capacity modulated compressor, and one kind is reduction
Refrigerant flow, another kind are the specific refrigerating effect for reducing refrigerant.Reduction refrigerant flow is most generally used, is such as passed through
Direct bypassed exhaust gas reduces extraction flow, and to reduce refrigerating capacity, this scheme is easy to cause system pressure to damage due to changing flow
It loses；Or by closing economizer, refrigerant degree of supercooling is reduced, to reduce the specific refrigerating effect of refrigerant, this scheme is unfavorable for
Improve compressor oil return situation.
Summary of the invention
The present invention proposes a kind of air-conditioning system and its energy adjustment method, and this method is by reducing the unit refrigeration of refrigerant
Amount achievees the purpose that adjust energy, while being avoided that because of system pressure loss caused by changing flow, and improve returning for compressor
Oily condition.
A kind of air-conditioning system proposed by the present invention, including compressor, condenser and fluid reservoir further include an expansion drum, institute
It states pipeline in the middle part of condenser and is equipped with a reversal valve, refrigerant is connected by the bottom of the reversal valve and pipeline and the expansion drum
Logical, it further includes a company that the top of the expansion drum, which is connected to by pipeline and the first solenoid valve with the suction pipe of the compressor,
The liquid feeding pipeline of expansion pot bottom and liquid storage pot bottom is connect, which is equipped with second solenoid valve.
Preferably, the arrival end of the throttling set of the air-conditioning system is equipped with filter.
Preferably, the export pipeline of the evaporator of the air-conditioning system is equipped with suction filter.
Preferably, the condenser uses air cooling fin formula heat exchanger.
The present invention also proposes a kind of energy adjustment method using above-mentioned air-conditioning system, and this method is by being arranged in condenser
Reversal valve on the pipeline of middle part changes the heat exchange area of refrigerant within the condenser, thus changes refrigerant enthalpy and condensation pressure
Power reaches reduction specific refrigerating effect, adjusts the purpose of air-conditioning system energy.
The energy adjustment method includes normal operation state and energy adjustment state, in which:
In normal operation state, reversal valve is connected to condenser tubes end, and the first and second solenoid valves are closed.
In energy adjustment state, reversal valve is connected to expansion drum one end, and the first solenoid valve is closed, and second solenoid valve is opened.
When air-conditioning system exits energy adjustment state, reversal valve is connected to condenser ends, and the first solenoid valve is kept to open
It is closed after opening time t, second solenoid valve is closed.
Preferably, the time t is 1 minute.
Compared with prior art, the invention has the following advantages:
1. no capacity modulated compressor proposed by the present invention, structure is simple, and cost is lower.
2. being directly changed refrigerant unit refrigeration by way of adjusting condenser heat exchange area and setting intermediate expansion tank
Amount is avoided due to the pressure loss caused by changing flow.
3. the method for being directly changed refrigerant specific refrigerating effect makes the refrigerant into evaporator belong to the gas in two-phase state
Mutually increase, improve flow rate of pipelines, is conducive to improve oil return situation.
Detailed description of the invention
Fig. 1 is refrigeration cycle schematic diagram of the invention；
Fig. 2 is the flow chart of control method of the present invention；
Fig. 3 is the pressure-enthalpy chart of refrigeration cycle.
Specific embodiment
In order to keep the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with drawings and examples to this hair
It is bright to be described in detail.It should be appreciated that following specific embodiments only to explain the present invention, do not constitute limit to the present invention
System.
Fig. 1 is refrigeration cycle schematic diagram of the invention.Air-conditioning system includes compressor 1, condenser 2, fluid reservoir 3, throttling
Device 4 and evaporator 5.The arrival end of throttling set 4 is equipped with filter 11.The export pipeline of evaporator is equipped with suction filter
12.In the embodiment, condenser uses air cooling fin formula heat exchanger.
In a normal state, refrigerant becomes high temperature and high pressure gas by the compression of compressor 1, becomes after condenser 2 is cooling
Enter liquid storage device for high pressure Normal Atmospheric Temperature Liquid, then become low temperature and low pressure liquid through throttling set 4, finally the evaporation and heat-exchange in evaporator
After become low temperature low pressure gas, return to compressor cycle later.
The present invention changes refrigerant enthalpy and cold by directly adjusting condenser heat exchange area and setting intermediate expansion tank
Solidifying pressure, controls the specific refrigerating effect of refrigerant, achievees the effect that unit energy adjustment.
As shown in Figure 1, technical solution of the present invention on conventional process base, increases the stream for being used for energy adjustment all the way
Journey is made of reversal valve 7, expansion drum 6, the first solenoid valve 8 and second solenoid valve 9.Reversal valve 7 is mounted on air-cooled condenser mainstream
The heat exchange area that refrigerant passes through condenser is reduced for switching primary flow path flow direction in the middle part of road pipeline.Expansion drum 6 is mounted on
In flow path after switching, for reducing condensing pressure.First solenoid valve 8 is mounted on expansion drum top exit to compressor suction duct
The branch road on road, carries out the evacuation of expansion drum when for exiting energy adjustment.Second solenoid valve 9 is mounted on 6 bottom of expansion drum and goes out
Among liquid to the liquid feeding pipeline of liquid storage device 3, for the primary flow path feed flow after entrance energy adjustment.
Fig. 2 is the flow chart of control method of the present invention.This method passes through the reversal valve in setting within the condenser portion's pipeline
Change the heat exchange area of refrigerant within the condenser, thus change refrigerant enthalpy and condensing pressure, reaches and reduce unit refrigeration
Amount adjusts the purpose of air-conditioning system energy.
In normal operation state, reversal valve is connected to condenser tubes end, and the first solenoid valve 8 is closed, second solenoid valve
It closes.At this point, refrigerant passes through the pipe end of condenser 2 to fluid reservoir 3.
In energy adjustment state, reversal valve is connected to expansion drum one end, and the first solenoid valve 8 is closed, and second solenoid valve 9 is opened
It opens.Refrigerants all at this time all passes through second solenoid valve 9 into compressor air suction mouth, and expansion drum 6 plays antihypertensive effect.
When exiting energy adjustment, the pipe end of 7 directed toward condenser 2 of reversal valve, second solenoid valve 9 is closed, the first electricity
Magnet valve 8 is opened, and the first solenoid valve is closed after 1 minute.
Fig. 3 is the pressure-enthalpy chart of system.
Under conventional sense, refrigerant becomes high temperature and high pressure gas (corresponding pressure-enthalpy chart point 2) through overcompression, after condenser is cooling
Become high pressure Normal Atmospheric Temperature Liquid (corresponding pressure-enthalpy chart point 3), leads to liquid storage device, then become low temperature and low pressure liquid through throttling set and (correspond to
Pressure-enthalpy chart point 4), in evaporator after evaporation and heat-exchange, become low temperature low pressure gas, returns to compressor (corresponding pressure-enthalpy chart point 1).Often
Under rule state process, refrigerant specific refrigerating effect be a little 1 and point 4 between enthalpy difference h14。
Into after energy adjustment, reversal valve 7 commutates to expansion drum all the way, and the first solenoid valve 8 is closed, and second solenoid valve 9 is opened
It opens.Main road refrigerant only have passed through a part of heat exchange area of condenser after reversal valve commutation, therefore refrigerant is in pressure-enthalpy chart
In 2-3 cooling procedure in, only cool a part, reached the enthalpy of a little 3 " (or point 3 ', the two enthalpy is equal), do not reached
To the saturation state of point 3, refrigerant is in a two-phase state.Simultaneously because heat exchange area becomes smaller, lead to changing for refrigerant and air
Heat becomes smaller, and the condensation temperature and condensing pressure of refrigerant will rise to a little 3 " state.After refrigerant enters expansion drum, by
Increase in overall volume, refrigerant condensing pressure and condensation temperature decline, and state drops to a little 3 ' two-phase fluid position, makes machine
Group works under lower condensing pressure, reduces the output of shaft power.Meanwhile after compressor becomes smaller due to condenser heat exchange area,
To rise that exhaust ends 2 ', fall back to a little 2, reduce compressor exhaust temperature.Refrigerant is from expansion drum 6 by the second electricity
Magnet valve 8 by liquid storage device feed flow, is throttled to a little 4 ' through throttling set, into exchanging heat in evaporator, finally into liquid storage device 3
Compressor is returned to continue cycling through.Under energy adjustment process, refrigerant specific refrigerating effect be a little 1 and point 4 ' between enthalpy difference h14’。
Reduce h compared to old process44’Enthalpy difference is realized by changing refrigerant specific refrigerating effect, is reached and is adjusted the output of unit energy
Effect.
When air-conditioning system exits energy adjustment, reversal valve is directed to the line end of condenser all the way, and the first solenoid valve 8 is opened
It opens, second solenoid valve 9 is closed, and the first solenoid valve is closed after 1 minute.It is cold after reversal valve is switched to condenser ends all the way
Condenser heat exchange area is restored comprehensively.Second solenoid valve 9 is closed simultaneously, and the first solenoid valve 8 is opened, and utilizes the air-breathing of compressor
The refrigerant of expansion drum all the way is recovered in main road refrigerant circulation by pipeline low pressure.After 1 minute, expansion drum inner refrigerant is returned
Harvest complete, the first solenoid valve 8 of closing.So far energy adjustment exits completely, and unit is restored in conventional refrigerant process.
Above-mentioned energy adjustment mode needs the actual size according to system, the expansion drum of corresponding volume is configured, to reach cold
After condenser heat exchange area reduces, the effect of lower condensing pressure and condensation temperature is maintained.
When exiting energy adjustment, the time that the first solenoid valve recycles expansion drum inner refrigerant is opened, it can be according to reality
Expanded size, pipeline caliber and the compressor air-discharging amount of border configuration suitably increase and decrease.
In refrigeration system of the technical solution proposed by the present invention applied to no capacity modulated compressor unit, not only avoid
Due to the pressure loss caused by changing flow, and be conducive to improve oil return situation.
The foregoing is merely a specific embodiment of the invention.It should be pointed out that it is all present inventive concept spirit and
Any modification, equivalent replacement and the variation made in frame, should all be included within protection scope of the present invention.
Claims (7)
1. a kind of air-conditioning system, including compressor, condenser and fluid reservoir, which is characterized in that it further include an expansion drum, it is described cold
A reversal valve is equipped in the middle part of condenser pipeline, refrigerant is connected to by the reversal valve and pipeline with the bottom of the expansion drum, described
The top of expansion drum is connected to by pipeline and the first solenoid valve with the suction pipe of the compressor, further includes a connection expansion drum
The liquid feeding pipeline of bottom and liquid storage pot bottom, the liquid feeding pipeline are equipped with second solenoid valve;The air-conditioning system includes conventional
Working condition and energy adjustment state, in which:
Normal operation state, the reversal valve are connected to condenser tubes end, and the first and second solenoid valves are closed；
Energy adjustment state, reversal valve are connected to expansion drum one end, and the first solenoid valve is closed, and second solenoid valve is opened.
2. air-conditioning system as described in claim 1, which is characterized in that the air-conditioning system further includes a throttling set, described
The arrival end of throttling set is equipped with filter.
3. air-conditioning system as described in claim 1, which is characterized in that the air-conditioning system further includes an evaporator, the steaming
The export pipeline for sending out device is equipped with suction filter.
4. air-conditioning system as described in claim 1, which is characterized in that the condenser uses air cooling fin formula heat exchanger.
5. a kind of energy adjustment method using air-conditioning system described in 4 any bar of Claims 1-4, which is characterized in that by setting
It sets and changes the heat exchange area of refrigerant within the condenser in the supermedial reversal valve of condenser tubes, thus change refrigerant enthalpy
And condensing pressure, specific refrigerating effect is reduced, the energy of air-conditioning system is adjusted；The energy adjustment method includes routine work shape
State and energy adjustment state, in which:
Normal operation state, reversal valve are connected to condenser tubes end, and the first and second solenoid valves are closed；
Energy adjustment state, reversal valve are connected to expansion drum one end, and the first solenoid valve is closed, and second solenoid valve is opened.
6. energy adjustment method as claimed in claim 5, which is characterized in that when air-conditioning system exits energy adjustment state,
Reversal valve is connected to condenser pipe end, and second solenoid valve is closed, and closes after the first electromagnetism valve opening time t.
7. energy adjustment method as claimed in claim 6, which is characterized in that the time t is 1 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811334191.XA CN109539614B (en) | 2018-11-09 | 2018-11-09 | A kind of air-conditioning system and its energy adjustment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811334191.XA CN109539614B (en) | 2018-11-09 | 2018-11-09 | A kind of air-conditioning system and its energy adjustment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109539614A CN109539614A (en) | 2019-03-29 |
| CN109539614B true CN109539614B (en) | 2019-10-18 |
Family
ID=65846658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811334191.XA Active CN109539614B (en) | 2018-11-09 | 2018-11-09 | A kind of air-conditioning system and its energy adjustment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109539614B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789865A (en) * | 2004-12-15 | 2006-06-21 | Lg电子株式会社 | Heat exchanger and air conditioner using the same |
| CN1295469C (en) * | 2005-06-02 | 2007-01-17 | 上海大洋制冷工程有限公司 | One refrigerating unit for cooling two places in refrigerator car |
| CN1908552A (en) * | 2006-08-22 | 2007-02-07 | 东南大学 | Thermostatic dehumidifying method and equipment |
| EP2056043A1 (en) * | 2007-04-11 | 2009-05-06 | Calsonic Kansei Corporation | Refrigerating unit and heat exchanger used for the same |
| CN201828093U (en) * | 2010-09-30 | 2011-05-11 | 广东志高空调有限公司 | Energy-saving air conditioner with refrigerant regulating function |
| CN202907395U (en) * | 2012-10-30 | 2013-04-24 | 江苏兆胜空调有限公司 | Stepless energy-adjusting refrigeration system |
| CN203231578U (en) * | 2013-04-22 | 2013-10-09 | 合肥晶弘电器有限公司 | Refrigeration system with adjustable condensation area and direct-cooling refrigerator |
| CN103499156A (en) * | 2013-09-24 | 2014-01-08 | 广州赛宝仪器设备有限公司 | High-and-low-temperature environmental testing refrigerating system, high-and-low-temperature environmental testing box and control method |
| CN204176947U (en) * | 2014-10-08 | 2015-02-25 | 合肥华凌股份有限公司 | Refrigeration system and the refrigeration plant with it |
| CN105091420A (en) * | 2015-08-26 | 2015-11-25 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2018021083A1 (en) * | 2016-07-26 | 2018-02-01 | 株式会社デンソー | Refrigeration cycle device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004338447A (en) * | 2003-05-13 | 2004-12-02 | Denso Corp | Air conditioner |
-
2018
- 2018-11-09 CN CN201811334191.XA patent/CN109539614B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789865A (en) * | 2004-12-15 | 2006-06-21 | Lg电子株式会社 | Heat exchanger and air conditioner using the same |
| CN1295469C (en) * | 2005-06-02 | 2007-01-17 | 上海大洋制冷工程有限公司 | One refrigerating unit for cooling two places in refrigerator car |
| CN1908552A (en) * | 2006-08-22 | 2007-02-07 | 东南大学 | Thermostatic dehumidifying method and equipment |
| EP2056043A1 (en) * | 2007-04-11 | 2009-05-06 | Calsonic Kansei Corporation | Refrigerating unit and heat exchanger used for the same |
| CN201828093U (en) * | 2010-09-30 | 2011-05-11 | 广东志高空调有限公司 | Energy-saving air conditioner with refrigerant regulating function |
| CN202907395U (en) * | 2012-10-30 | 2013-04-24 | 江苏兆胜空调有限公司 | Stepless energy-adjusting refrigeration system |
| CN203231578U (en) * | 2013-04-22 | 2013-10-09 | 合肥晶弘电器有限公司 | Refrigeration system with adjustable condensation area and direct-cooling refrigerator |
| CN103499156A (en) * | 2013-09-24 | 2014-01-08 | 广州赛宝仪器设备有限公司 | High-and-low-temperature environmental testing refrigerating system, high-and-low-temperature environmental testing box and control method |
| CN204176947U (en) * | 2014-10-08 | 2015-02-25 | 合肥华凌股份有限公司 | Refrigeration system and the refrigeration plant with it |
| CN105091420A (en) * | 2015-08-26 | 2015-11-25 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2018021083A1 (en) * | 2016-07-26 | 2018-02-01 | 株式会社デンソー | Refrigeration cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109539614A (en) | 2019-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019091241A1 (en) | Cooling circulation system for air conditioning, and air conditioner | |
| CN107110570A (en) | Heat storage type air conditioner | |
| JP4375171B2 (en) | Refrigeration equipment | |
| CN103629873A (en) | Control method of two-stage compression air conditioning system | |
| JP2010127531A (en) | Refrigeration air conditioner | |
| CN111288676B (en) | Water chilling unit | |
| CN107796146B (en) | Condensing system, air conditioning system and control method | |
| CN109869941B (en) | Heat pump system, air suction superheat degree and vapor-liquid separator accumulated liquid evaporation control method | |
| JP2002195670A (en) | Transcritical vapor compression system, and suction lien heat exchanger regulating pressure of high-pressure component of refrigerant circulating in the system | |
| CN104896779A (en) | Turbine refrigerator | |
| JP2018096560A (en) | Heat transfer unit and binary hot water generation device | |
| US20240093921A1 (en) | Cooling system with flooded low side heat exchangers | |
| JP6253370B2 (en) | Refrigeration cycle equipment | |
| JP4325455B2 (en) | Air conditioner with defrost function | |
| CN109539614B (en) | A kind of air-conditioning system and its energy adjustment method | |
| JP5150300B2 (en) | Heat pump type water heater | |
| CN110470073B (en) | Carbon dioxide heat pump system | |
| JP2004003717A (en) | Air conditioner | |
| CN113686044B (en) | Heat pump unit | |
| KR102370179B1 (en) | A Single cooling system for semiconductor equipment | |
| JP2006234321A (en) | Outdoor unit and air conditioner | |
| CN108027178A (en) | Heat pump | |
| CN112880244A (en) | Two-phase flow air conditioning system with free cooling function | |
| KR101908307B1 (en) | Refrigeration system | |
| CN111964188B (en) | Thermosiphon-vapor compression composite refrigeration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |