CN109579344A - A kind of air-conditioning system and its control method that can prevent compressor liquid hammer - Google Patents
A kind of air-conditioning system and its control method that can prevent compressor liquid hammer Download PDFInfo
- Publication number
- CN109579344A CN109579344A CN201811424185.3A CN201811424185A CN109579344A CN 109579344 A CN109579344 A CN 109579344A CN 201811424185 A CN201811424185 A CN 201811424185A CN 109579344 A CN109579344 A CN 109579344A
- Authority
- CN
- China
- Prior art keywords
- gas
- liquid
- liquid separator
- compressor
- hammer
- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
-
- 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
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
-
- 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
- F25B2600/2513—Expansion valves
-
- 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)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention relates to air-conditioning systems and its control method that one kind can prevent compressor liquid hammer, including outdoor unit and indoor unit, wherein, outdoor unit includes by compressor, oil eliminator, check valve, four-way valve, outdoor heat exchanger, heat electric expansion valve, the coolant loop that refrigeration check valve and gas-liquid separator are constituted, the gas-liquid separator is equipped with crankshaft heating band and liquid level sensor, liquid refrigerants in gas-liquid separator can be detected in time, and crankshaft heating band is opened in due course, make liquid refrigerants rapid evaporation gaseous state, and enter compressor through compressor air suction mouth, prevent compressor liquid hammer, the stability of guarantee system operation.
Description
Technical field
The present invention relates to a kind of air-conditioning system and control method, especially a kind of air-conditioning system that can prevent compressor liquid hammer
System and its control method.
Background technique
In air-conditioning system, especially multi-online air-conditioning system, gas-liquid separator as one of essential components,
Play a part of oil return, separation gaseous state and liquid refrigerant and storage refrigerant.Gas-liquid separator used at present mostly exists
Following problems:
Cooling system run when, when interior machine break down or interior machine power off suddenly the case where, in fact it could happen that interior machine electric expansion valve
The phenomenon that being not turned off, interior machine heat exchanger absolutely not evaporation, a large amount of liquid refrigerants enter in gas-liquid separator at this time,
Enter compressor through compressor air suction mouth and generates liquid hit phenomenon.
When system heats, unit will do it defrosting and oil return operation, and system is switched to refrigerating state by heating state, is making
At cold heating switching initial stage, there is a large amount of liquid refrigerants and enter gas-liquid separator, so that entering compressor generates liquid hammer.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide the air-conditioning systems that one kind can prevent compressor liquid hammer
And its control method, it can be heated in time, make liquid refrigerants in gas-liquid separator there are when a large amount of liquid refrigerants
Rapid evaporation is gaseous state, and enters compressor through compressor air suction mouth, prevents compressor liquid hammer, guarantees the steady of system operation
It is qualitative.
The technical scheme is that
A kind of air-conditioning system that can prevent compressor liquid hammer, including outdoor unit and indoor unit, wherein outdoor unit includes by compressing
Machine, oil eliminator, check valve, four-way valve, outdoor heat exchanger, heating electric expansion valve, refrigeration check valve and gas-liquid separator structure
At coolant loop, the gas-liquid separator be equipped with crankshaft heating band, gas-liquid separator can be heated；The gas-liquid point
From liquid level sensor is additionally provided on device, the liquid level in the gas-liquid separator can be sensed.
Further, oil return capillary is additionally provided between the oil eliminator and the gas-liquid separator, it can be by oil
The gas-liquid separator is flowed back into from the lubricating oil in device.
A kind of air conditioner system control method that can prevent compressor liquid hammer, comprising the following steps:
1) it is switched on, detects environment temperature TH, and compare the TH and setting value TH0；If TH > TH0, goes to step 7)；
2) the liquid level L in liquid level sensor detection gas-liquid separator, and compare the L and setting value L1 and L2, wherein L1 < L2；
If L >=L2 goes to step 5)；
If 3) L1≤L < L2, detects gas and divide oil overheating degree TQ, and compare the TQ and setting value TQ0；If TQ > TQ0,
Then go to step 7)；If TQ≤TQ0 goes to step 5)；
4) if L < L1, goes to step 7)
5) crankshaft heating band is opened；
6) it keeps crankshaft heating band to open, and continues to test the liquid level of gas-liquid separator, until L≤L1；
7) crankshaft heating band is closed.
Further, the gas divide oil overheating degree be gas-liquid separator in lubricating oil temperature and evaporating temperature it
Difference.
Beneficial effects of the present invention:
The present invention has rational design, and structure is reliable, easy to control, can in gas-liquid separator there are when a large amount of liquid refrigerants, and
When it is heated, make liquid refrigerants rapid evaporation gaseous state, and enter compressor through compressor air suction mouth, prevent pressure
Contracting machine liquid hammer guarantees the stability of system operation.
Detailed description of the invention
Fig. 1 is the principle schematic diagram of outdoor machine part of the present invention.
Fig. 2 is control method flow diagram of the present invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1.
A kind of air-conditioning system that can prevent compressor liquid hammer, including outdoor unit and indoor unit.Wherein, outdoor unit include by
Compressor 1, oil eliminator 2, check valve 3, four-way valve 4, outdoor heat exchanger 5, heating electric expansion valve 6, refrigeration check valve 7, gas
The refrigerant that liquid/gas separator 8, liquid level sensor 9, oil return capillary 10 are constituted is returned, specifically: the exhaust outlet and oil of compressor 1
Suction inlet from device 2 is connected, and the delivery outlet of oil eliminator 2 is connected with the first end of check valve 3, four-way valve 4, and the of four-way valve 4
Two ends are connected with indoor unit, and the third end of four-way valve 4 is connected with the inlet end of gas-liquid separator 8, the 4th end of four-way valve 4 and room
Outer machine heat exchanger 5 is connected, and heating electric expansion valve 6 is connected with indoor unit, and the exhaust outlet of gas-liquid separator 8 is connected to the suction of compressor 1
Tracheae.The refrigeration check valve 7 in parallel of the heating electric expansion valve 6；The oil eliminator 2 there are also oil return pipe all the way,
Lubricating oil returns to gas-liquid separator through the suction inlet of gas-liquid separator by oil return capillary 10.The gas-liquid separator 8 is equipped with
Crankshaft heating band 11 can heat gas-liquid separator；It is additionally provided with liquid level sensor 9 on the gas-liquid separator 8, can be felt
Survey the liquid level in the gas-liquid separator.
A kind of air conditioner system control method that can prevent compressor liquid hammer, comprising the following steps:
1) it is switched on, detects environment temperature TH, and compare the TH and 20 DEG C of setting value；If 20 DEG C of TH >, going to step 7)；
2) the liquid level L in liquid level sensor detection gas-liquid separator, and compare the L and setting value L1 and L2, wherein L1 < L2；
If L >=L2 goes to step 5)；
If 3) L1≤L < L2, detects gas and divide oil overheating degree TQ, and compare the TQ and 10 DEG C of setting value；If TQ > 10
DEG C, then go to step 7)；If TQ≤10 DEG C go to step 5)；
4) if L < L1, goes to step 7)
5) crankshaft heating band is opened；
6) crankshaft heating band is kept to open, and the liquid level of the gas-liquid separator of detection in every 1 minute, until L≤L1；
7) crankshaft heating band is closed.
The present invention in time can heat it, keep liquid cold in gas-liquid separator there are when a large amount of liquid refrigerants
Matchmaker's rapid evaporation is gaseous state, and enters compressor through compressor air suction mouth, prevents compressor liquid hammer, guarantees system operation
It is stable and reliable.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (4)
1. one kind can prevent the air-conditioning system of compressor liquid hammer, including outdoor unit and indoor unit, wherein outdoor unit includes by pressing
Contracting machine, oil eliminator, check valve, four-way valve, outdoor heat exchanger, heating electric expansion valve, refrigeration check valve, gas-liquid separator structure
At coolant loop, it is characterized in that the gas-liquid separator be equipped with crankshaft heating band, gas-liquid separator can be heated；
It is additionally provided with liquid level sensor on the gas-liquid separator, the liquid level in the gas-liquid separator can be sensed.
2. the air-conditioning system according to claim 1 that compressor liquid hammer can be prevented, it is characterized in that the oil eliminator with
It is additionally provided with oil return capillary between the gas-liquid separator, the lubricating oil in oil eliminator can be flowed back into the gas-liquid separation
Device.
3. one kind can prevent the air conditioner system control method of compressor liquid hammer, it is characterized in that the following steps are included:
1) it is switched on, detects environment temperature TH, and compare the TH and setting value TH0；If TH > TH0, goes to step 7)；
2) the liquid level L in liquid level sensor detection gas-liquid separator, and compare the L and setting value L1 and L2, wherein L1 < L2；
If L >=L2 goes to step 5)；
If 3) L1≤L < L2, detects gas and divide oil overheating degree TQ, and compare the TQ and setting value TQ0；If TQ > TQ0,
Then go to step 7)；If TQ≤TQ0 goes to step 5)；
4) if L < L1, goes to step 7)
5) crankshaft heating band is opened；
6) it keeps crankshaft heating band to open, and continues to test the liquid level of gas-liquid separator, until L≤L1；
7) crankshaft heating band is closed.
4. the air conditioner system control method according to claim 3 that compressor liquid hammer can be prevented, it is characterized in that the gas
Divide the difference for the temperature and evaporating temperature that oil overheating degree is the lubricating oil in gas-liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424185.3A CN109579344A (en) | 2018-11-27 | 2018-11-27 | A kind of air-conditioning system and its control method that can prevent compressor liquid hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424185.3A CN109579344A (en) | 2018-11-27 | 2018-11-27 | A kind of air-conditioning system and its control method that can prevent compressor liquid hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109579344A true CN109579344A (en) | 2019-04-05 |
Family
ID=65924895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811424185.3A Pending CN109579344A (en) | 2018-11-27 | 2018-11-27 | A kind of air-conditioning system and its control method that can prevent compressor liquid hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109579344A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486626A (en) * | 2020-04-30 | 2020-08-04 | 宁波奥克斯电气股份有限公司 | Liquid-gas separator, air conditioner and liquid-gas separation method |
| CN111811112A (en) * | 2020-07-13 | 2020-10-23 | 南京天加环境科技有限公司 | Intelligent oil return multi-split air conditioner system |
| WO2021078033A1 (en) * | 2019-10-25 | 2021-04-29 | 青岛海尔空调电子有限公司 | Method for controlling heating belt of compressor |
| CN113513797A (en) * | 2021-07-13 | 2021-10-19 | 南京天加环境科技有限公司 | Air conditioning system capable of detecting liquid level of refrigerant |
| CN115218556A (en) * | 2021-04-20 | 2022-10-21 | 芜湖美智空调设备有限公司 | Compressor for air conditioner, air conditioner and control method of air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001027460A (en) * | 1993-12-28 | 2001-01-30 | Mitsubishi Electric Corp | Refrigeration cycle system |
| CN204154042U (en) * | 2014-10-15 | 2015-02-11 | 安徽美芝精密制造有限公司 | Reservoir |
| CN105674638A (en) * | 2016-01-06 | 2016-06-15 | 广东美的暖通设备有限公司 | Gas-liquid separator, air-conditioning system and control method for preventing liquid returning of compressor |
| CN108253625A (en) * | 2016-12-29 | 2018-07-06 | 青岛海尔新能源电器有限公司 | A kind of Teat pump boiler and its control method |
-
2018
- 2018-11-27 CN CN201811424185.3A patent/CN109579344A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001027460A (en) * | 1993-12-28 | 2001-01-30 | Mitsubishi Electric Corp | Refrigeration cycle system |
| CN204154042U (en) * | 2014-10-15 | 2015-02-11 | 安徽美芝精密制造有限公司 | Reservoir |
| CN105674638A (en) * | 2016-01-06 | 2016-06-15 | 广东美的暖通设备有限公司 | Gas-liquid separator, air-conditioning system and control method for preventing liquid returning of compressor |
| CN108253625A (en) * | 2016-12-29 | 2018-07-06 | 青岛海尔新能源电器有限公司 | A kind of Teat pump boiler and its control method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021078033A1 (en) * | 2019-10-25 | 2021-04-29 | 青岛海尔空调电子有限公司 | Method for controlling heating belt of compressor |
| CN111486626A (en) * | 2020-04-30 | 2020-08-04 | 宁波奥克斯电气股份有限公司 | Liquid-gas separator, air conditioner and liquid-gas separation method |
| CN111811112A (en) * | 2020-07-13 | 2020-10-23 | 南京天加环境科技有限公司 | Intelligent oil return multi-split air conditioner system |
| CN115218556A (en) * | 2021-04-20 | 2022-10-21 | 芜湖美智空调设备有限公司 | Compressor for air conditioner, air conditioner and control method of air conditioner |
| CN113513797A (en) * | 2021-07-13 | 2021-10-19 | 南京天加环境科技有限公司 | Air conditioning system capable of detecting liquid level of refrigerant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110940055B (en) | Heating and defrosting control method and device for air conditioner and air conditioner | |
| CN109579344A (en) | A kind of air-conditioning system and its control method that can prevent compressor liquid hammer | |
| US9027357B2 (en) | Method for determining if refrigerant charge is sufficient and charging refrigerant | |
| EP2088391B1 (en) | Method for determining the amount of refrigerant of air-conditioning apparatus | |
| US10941964B2 (en) | Method for operating a vapour compression system with a receiver | |
| CN112212467B (en) | Air conditioner control method and device and air conditioning unit | |
| CN109269138B (en) | Multi-split system for preventing liquid return of compressor and control method thereof | |
| US20130061614A1 (en) | Air conditioner and method for controlling the same | |
| CN109539623B (en) | Air conditioning system and air supplementing and enthalpy increasing control method thereof | |
| EP2924369B1 (en) | Air conditioner | |
| CN105627612A (en) | Outdoor unit refrigerant pipeline system, air conditioner and refrigeration control method for air conditioner | |
| CN104515319A (en) | Air conditioning system | |
| US8205463B2 (en) | Air conditioner and method of controlling the same | |
| CN109442792B (en) | Defrosting system and defrosting control method of air conditioner and air conditioner | |
| US7451615B2 (en) | Refrigeration device | |
| JP2005214575A (en) | Refrigerator | |
| CN103983038B (en) | Air conditioning system and control method thereof | |
| CN106895519B (en) | Air-conditioning system and air-conditioner control method | |
| CN105180511A (en) | Split floor type air conditioner, refrigerant recycling method and refrigerant recycling device | |
| JP5517891B2 (en) | Air conditioner | |
| KR102500807B1 (en) | Air conditioner and a method for controlling the same | |
| CN103759395A (en) | Adjusting system adapting to working condition changes of air conditioner | |
| CN203550269U (en) | Air conditioning system | |
| KR101769821B1 (en) | Air conditioner and Controlling method for the same | |
| CN205102459U (en) | Refrigerator car and unit heats thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |