CN114396382A - Device and method for testing oil circulation rate of compressor of air conditioning system - Google Patents
Device and method for testing oil circulation rate of compressor of air conditioning system Download PDFInfo
- Publication number
- CN114396382A CN114396382A CN202111620179.7A CN202111620179A CN114396382A CN 114396382 A CN114396382 A CN 114396382A CN 202111620179 A CN202111620179 A CN 202111620179A CN 114396382 A CN114396382 A CN 114396382A
- Authority
- CN
- China
- Prior art keywords
- sampler
- valve
- conditioning system
- compressor
- pipeline
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides an oil circulation rate testing device for a compressor of an air conditioning system, and relates to the technical field of oil circulation detection of the air conditioning system. The testing device comprises a sampler, a liquid inlet pipeline, a liquid outlet pipeline and a bypass pipeline, wherein a liquid inlet end of the sampler is connected with the liquid inlet pipeline, a liquid outlet end of the sampler is connected with the liquid outlet pipeline, a vacuum pumping valve and a visual window are arranged on the sampler, a first valve is arranged on the liquid inlet pipeline, a second valve is arranged on the liquid outlet pipeline, a liquid inlet end of the bypass pipeline is arranged between the first valve and the liquid inlet end of the liquid inlet pipeline and is communicated with the liquid inlet pipeline, a liquid outlet end of the bypass pipeline is arranged between the second valve and the liquid outlet end of the liquid outlet pipeline and is communicated with the liquid outlet pipeline, and a third valve is arranged on the bypass pipeline. The invention also provides a method for testing the circulation of the compressor oil of the air conditioning system, which does not affect the normal work of the air conditioning system, realizes the real-time monitoring of the circulation rate of the compressor oil and is beneficial to controlling the injection amount of the lubricating oil of the compressor.
Description
Technical Field
The invention relates to the technical field of oil circulation detection of air conditioning systems, in particular to a device and a method for testing the oil circulation rate of a compressor of an air conditioning system.
Background
When a compressor of the air conditioning system is electrified to work, the stator generates a magnetic field to enable the rotor to rotate to drive the piston to eccentrically move in the air cylinder, so that low-temperature and low-pressure gas cold medium is compressed into high-temperature and high-pressure gas, and then the gas is discharged into the air conditioning system. The air cylinder in the compressor belongs to high-precision parts, the gaps of parts in the cylinder body are all in the micrometer level, the gaps among the parts are extremely small, the lubrication among all parts in the compressor is required to be ensured when the air cylinder moves, otherwise, the compressor is very easy to block and lose efficacy.
In order to ensure the normal operation of a compressor in an air conditioning system, excessive lubricating oil needs to be added into the compressor, when the lubricating oil in the compressor of the air conditioning system is excessive, a large amount of lubricating oil enters the air conditioning system along with high-temperature and high-pressure gas discharged by a cylinder in the compressor, the lubricating oil entering the air conditioning system is easy to adhere to the inside of a heat exchanger to form an oil film, so that the proportion of a refrigerant in the heat exchanger is reduced, and the heat exchange efficiency of the heat exchanger is influenced.
In order to ensure the heat exchange efficiency and reliability of the compressor, the oil circulation rate of the lubricating oil in the compressor is required. At the present stage, the oil circulation rate of the compressor is tested by adopting a calorie meter, the calorie meter can be used as large-cooling-capacity-range testing equipment to test the oil circulation rate of the compressor under the condition of a fixed working condition, but the calorie meter has the defects of testing the superheat degree, the supercooling degree and the condition of the fixed working condition, the testing data cannot directly reflect the running state of the compressor, and a device capable of directly testing the oil circulation rate of the compressor is not arranged on an air conditioning system. Therefore, it is desirable to provide a device and a method for testing the oil circulation rate of the compressor of the air conditioning system.
Disclosure of Invention
The invention aims to solve the problems and provides a device and a method for testing the oil circulation rate of the compressor of the air-conditioning system, which realize the real-time monitoring of the oil circulation rate of the compressor, avoid the problem of excessive or insufficient lubricating oil in the compressor, are favorable for ensuring the stability of the compressor and prolonging the service life of the compressor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a testing device for the oil circulation rate of a compressor of an air conditioning system comprises a sampler, a liquid inlet pipeline, a liquid outlet pipeline and a bypass pipeline;
the liquid inlet end of the sampler is connected with the liquid inlet pipeline through the quick-connection joint, the liquid outlet end of the sampler is connected with the liquid outlet pipeline through the quick-connection joint, the sampler is provided with a vacuum pumping valve, the liquid inlet pipeline is provided with a first valve, and the liquid outlet pipeline is provided with a second valve;
the liquid inlet end of the bypass pipeline is arranged between the first valve and the liquid inlet end of the liquid inlet pipeline and is communicated with the liquid inlet pipeline, the liquid outlet end of the bypass pipeline is arranged between the second valve and the liquid outlet end of the liquid outlet pipeline and is communicated with the liquid outlet pipeline, and the bypass pipeline is provided with a third valve.
Preferably, a visible window is arranged on the sampler.
Preferably, the liquid inlet end of the liquid inlet pipeline and the liquid outlet end of the liquid outlet pipeline are both provided with quick connectors.
A method for testing the oil circulation rate of an air conditioning system compressor adopts the device for testing the oil circulation rate of the air conditioning system compressor, and specifically comprises the following steps:
step 1, weighing a sampler, and determining the net weight of the sampler;
step 3, opening the first valve and the second valve, closing the third valve, opening the air conditioning system, and when the working duration of the air conditioning system reaches the set duration, closing the first valve and the second valve and opening the third valve;
and 5, calculating the oil circulation rate of the air conditioning system, wherein the oil circulation rate is shown as the formula (1):
in the formula, S is the oil circulation rate of the air conditioning system; a is the total mass of the sampler when the refrigerant is not volatilized; b is the total mass of the sampler after the refrigerant volatilizes; c is the net weight of the sampler.
Preferably, the injection amount of the lubricating oil is adjusted according to the oil circulation rate of the compressor in the air conditioning system, and the working efficiency of the compressor is controlled.
The invention has the following beneficial technical effects:
the visual window is arranged on the sampler of the testing device for the oil circulation rate of the compressor of the air conditioning system, so that a user can directly observe the internal condition of the sampler to obtain the flow rate of a refrigerant in the running process of the air conditioner, meanwhile, when the testing device is used for measuring the oil circulation rate of the compressor, the air conditioning system does not need to be closed in the sampling process, the normal running of the air conditioning system in the sampling process can be ensured by controlling the bypass pipeline, the oil circulation rate of the compressor of the air conditioning system can be monitored in real time, the injection amount of lubricating oil is adjusted according to the oil circulation rate of the compressor, the problem of surplus or insufficient injection amount of the lubricating oil in the compressor is effectively solved, the internal blockage and abrasion of a cavity of the compressor are avoided, the working efficiency and stability of the compressor are ensured, and the service life of the compressor is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an oil circulation rate testing device of an air conditioning system compressor.
In the figure: 1. sampler, 2, liquid inlet pipeline, 3, liquid outlet pipeline, 4, bypass pipeline, 5, quick-connection joint, 6, vacuum pumping and injecting valve, 7, visual window, 8, first valve, 9, second valve, 10, third valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A testing device for the oil circulation rate of a compressor of an air conditioning system is shown in figure 1 and comprises a sampler 1, a liquid inlet pipeline 2, a liquid outlet pipeline 3 and a bypass pipeline 4.
The liquid inlet end of the sampler 1 is connected with the liquid inlet pipeline 2 through a quick joint 5, and the liquid outlet end of the sampler 1 is connected with the liquid outlet pipeline 3 through the quick joint 5; be provided with vacuum pump drainage valve 6 and visual window 7 on the sampler 1, the vacuum pump drainage valve is used for taking out the inside air of sampler with vacuum pump connection, and visual window 7 is used for observing the inside condition of sampler, confirms flow and the state of refrigerant in the sampler, is provided with first valve 8 on the feed liquor pipeline 2, is provided with second valve 9 on the play liquid pipeline 3.
The liquid inlet end of the bypass pipeline 4 is arranged between the first valve 8 and the liquid inlet end of the liquid inlet pipeline 2 and communicated with the liquid inlet pipeline 2, the liquid outlet end of the bypass pipeline 4 is arranged between the second valve 9 and the liquid outlet end of the liquid outlet pipeline 3 and communicated with the liquid outlet pipeline 3, and the bypass pipeline 4 is provided with a third valve 10.
The invention also provides a method for testing the oil circulation rate of the compressor of the air-conditioning system, which adopts the device for testing the oil circulation rate of the compressor of the air-conditioning system and specifically comprises the following steps:
step 1, weighing the sampler 1 before the test starts, and determining the net weight C of the sampler 1.
And 3, opening the first valve 8 and the second valve 9, closing the third valve 10, setting a test duration, opening the air-conditioning system, enabling part of refrigerant and lubricating oil in the fluid to be retained in the sampler after the fluid flowing out of the condenser in the operation process of the air-conditioning system flows into the sampler 1 through the liquid inlet pipeline 2 and then flows into the evaporator through the liquid outlet pipeline 3, closing the first valve 8 and the second valve 9 when the operation duration of the air-conditioning system reaches the set test duration, and opening the third valve 10, wherein at the moment, the air-conditioning system continues to normally operate, and the fluid flowing out of the condenser flows into the evaporator through the bypass pipeline 4.
And 4, taking out the sampler 1 from the air-conditioning system compressor oil circulation rate testing device, weighing to obtain the mass A of the sampler 1 at the moment, namely the total mass of the sampler and the refrigerant and the lubricating oil therein, starting the vacuum pumping and injecting valve 6 to volatilize the refrigerant in the sampler 1 into the air through the vacuum pumping and injecting valve 6, only remaining the lubricating oil in the sampler 1 after the refrigerant is completely volatilized, and weighing again to obtain the mass B of the sampler 1, namely the total mass of the sampler and the lubricating oil in the sampler.
And 5, calculating the oil circulation rate of the air-conditioning system by using the formula (1), realizing real-time monitoring of the oil circulation rate of the compressor in the air-conditioning system, and adjusting the injection amount of the lubricating oil in the compressor according to the oil circulation rate of the compressor, so that the problem of excessive or insufficient injection of the lubricating oil in the compressor is avoided, the working efficiency of the compressor is ensured, and the service life of the compressor is prolonged.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (5)
1. The device for testing the oil circulation rate of the compressor of the air conditioning system is characterized by comprising a sampler, a liquid inlet pipeline, a liquid outlet pipeline and a bypass pipeline;
the liquid inlet end of the sampler is connected with the liquid inlet pipeline through the quick-connection joint, the liquid outlet end of the sampler is connected with the liquid outlet pipeline through the quick-connection joint, the sampler is provided with a vacuum pumping valve, the liquid inlet pipeline is provided with a first valve, and the liquid outlet pipeline is provided with a second valve;
the liquid inlet end of the bypass pipeline is arranged between the first valve and the liquid inlet end of the liquid inlet pipeline and is communicated with the liquid inlet pipeline, the liquid outlet end of the bypass pipeline is arranged between the second valve and the liquid outlet end of the liquid outlet pipeline and is communicated with the liquid outlet pipeline, and the bypass pipeline is provided with a third valve.
2. The air conditioning system compressor oil circulation rate testing device of claim 1, wherein a visual window is arranged on the sampler.
3. The device for testing the oil circulation rate of the compressor of the air conditioning system according to claim 1, wherein the liquid inlet end of the liquid inlet pipeline and the liquid outlet end of the liquid outlet pipeline are both provided with quick connectors.
4. The method for testing the oil circulation rate of the compressor of the air conditioning system is characterized by comprising the following steps of:
step 1, weighing a sampler, and determining the net weight of the sampler;
step 2, connecting an oil circulation rate testing device of an air conditioning system compressor between a condenser and an evaporator of the air conditioning system, closing a first valve and a second valve, opening a third valve, connecting a vacuum pumping valve with a vacuum pump, vacuumizing the interior of a sampler by using the vacuum pump, and closing the vacuum pumping valve;
step 3, opening the first valve and the second valve, closing the third valve, opening the air conditioning system, and when the working duration of the air conditioning system reaches the set duration, closing the first valve and the second valve and opening the third valve;
step 4, taking out the sampler from the air-conditioning system compressor oil circulation rate testing device, weighing the mass of the sampler at the moment to obtain the total mass of the sampler, starting a vacuum pumping and injecting valve to volatilize the refrigerant from the sampler to the air, only remaining lubricating oil in the sampler after the refrigerant is completely volatilized, weighing the mass of the sampler again to obtain the total mass of the sampler after the refrigerant is volatilized;
and 5, calculating the oil circulation rate of the air conditioning system, wherein the oil circulation rate is shown as the formula (1):
in the formula, S is the oil circulation rate of the air conditioning system; a is the total mass of the sampler when the refrigerant is not volatilized; b is the total mass of the sampler after the refrigerant volatilizes; c is the net weight of the sampler.
5. The method for testing the oil circulation rate of the compressor of the air conditioning system according to claim 4, wherein the working efficiency of the compressor is controlled by adjusting the injection amount of the lubricating oil according to the oil circulation rate of the compressor in the air conditioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620179.7A CN114396382A (en) | 2021-12-28 | 2021-12-28 | Device and method for testing oil circulation rate of compressor of air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620179.7A CN114396382A (en) | 2021-12-28 | 2021-12-28 | Device and method for testing oil circulation rate of compressor of air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114396382A true CN114396382A (en) | 2022-04-26 |
Family
ID=81229319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111620179.7A Pending CN114396382A (en) | 2021-12-28 | 2021-12-28 | Device and method for testing oil circulation rate of compressor of air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114396382A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114771210A (en) * | 2022-05-30 | 2022-07-22 | 重庆长安汽车股份有限公司 | Compressor capable of automatically adjusting content of lubricating oil in air conditioning system, method and vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01259238A (en) * | 1988-04-08 | 1989-10-16 | Fuji Heavy Ind Ltd | Oil content measuring instrument for refrigerating cycle |
| JP2001082815A (en) * | 1999-09-14 | 2001-03-30 | Mitsubishi Electric Corp | Refrigeration airconditioning cycle device |
| CN101498298A (en) * | 2009-02-19 | 2009-08-05 | 浙江工业大学 | Apparatus and method for measuring small-sized cold compressor oil circulation amount |
| CN103939323A (en) * | 2014-04-25 | 2014-07-23 | 合肥通用机械研究院 | On-line measurement test device for oil circulation rate of refrigeration compressor controlled by parallel oil levels |
| CN107989785A (en) * | 2017-11-17 | 2018-05-04 | 陕西聚洁瀚化工有限公司 | A kind of carbon dioxide refrigeration compressor Performance Test System |
| CN109404272A (en) * | 2018-12-04 | 2019-03-01 | 长虹华意压缩机股份有限公司 | A kind of equipment of test compression machine oil drain quantity and refrigeration system oil cycle performance |
| CN110987712A (en) * | 2019-12-06 | 2020-04-10 | 合肥通用机械研究院有限公司 | Device and method for sampling and measuring oil content of refrigerant |
-
2021
- 2021-12-28 CN CN202111620179.7A patent/CN114396382A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01259238A (en) * | 1988-04-08 | 1989-10-16 | Fuji Heavy Ind Ltd | Oil content measuring instrument for refrigerating cycle |
| JP2001082815A (en) * | 1999-09-14 | 2001-03-30 | Mitsubishi Electric Corp | Refrigeration airconditioning cycle device |
| CN101498298A (en) * | 2009-02-19 | 2009-08-05 | 浙江工业大学 | Apparatus and method for measuring small-sized cold compressor oil circulation amount |
| CN103939323A (en) * | 2014-04-25 | 2014-07-23 | 合肥通用机械研究院 | On-line measurement test device for oil circulation rate of refrigeration compressor controlled by parallel oil levels |
| CN107989785A (en) * | 2017-11-17 | 2018-05-04 | 陕西聚洁瀚化工有限公司 | A kind of carbon dioxide refrigeration compressor Performance Test System |
| CN109404272A (en) * | 2018-12-04 | 2019-03-01 | 长虹华意压缩机股份有限公司 | A kind of equipment of test compression machine oil drain quantity and refrigeration system oil cycle performance |
| CN110987712A (en) * | 2019-12-06 | 2020-04-10 | 合肥通用机械研究院有限公司 | Device and method for sampling and measuring oil content of refrigerant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114771210A (en) * | 2022-05-30 | 2022-07-22 | 重庆长安汽车股份有限公司 | Compressor capable of automatically adjusting content of lubricating oil in air conditioning system, method and vehicle |
| CN114771210B (en) * | 2022-05-30 | 2024-04-19 | 重庆长安汽车股份有限公司 | Compressor capable of automatically adjusting lubricating oil content in air conditioning system, method and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103154625B (en) | Freezing cycle device | |
| CN103487269B (en) | A kind of capacity-variable type cold water unit test system | |
| CN108343600B (en) | Performance test board for compressor and use method | |
| CN107013450B (en) | A kind of energy-saving compressor method for testing performance and device | |
| CN105485989A (en) | Two-stage compression air conditioning system and air compensating control method thereof | |
| CN114396382A (en) | Device and method for testing oil circulation rate of compressor of air conditioning system | |
| CN210425671U (en) | Ultralow-temperature perennial refrigeration type air-cooled air conditioning unit | |
| CN208108560U (en) | A kind of pipe-line system of fluorine pump | |
| CN207455816U (en) | Air-conditioner set | |
| CN103487267B (en) | Air-conditioning system test set | |
| CN207018184U (en) | A kind of energy-saving compressor device for detecting performance | |
| CN112097418B (en) | Automatic oil level maintaining system of compressor and control method thereof | |
| CN109404272A (en) | A kind of equipment of test compression machine oil drain quantity and refrigeration system oil cycle performance | |
| CN209569151U (en) | A kind of equipment of test compression machine oil drain quantity and refrigeration system oil cycle performance | |
| CN203298526U (en) | Oil returning and cooling dual-purpose device for refrigerating unit | |
| CN112923605A (en) | A draw and penetrate multi-functional oil return device of thermosyphon for heat pump set | |
| CN217813879U (en) | Vehicle electronic water pump comprehensive performance test device | |
| CN216622235U (en) | Performance test platform for transcritical carbon dioxide heat exchanger | |
| CN109579183A (en) | A kind of water source heat pump system | |
| CN220169718U (en) | Fluorine-deficiency protection and fluorine-supplementing device for air cooler of barrel pump refrigeration system | |
| CN215724249U (en) | Novel cooling system sealed by main drive | |
| CN219301118U (en) | Energy-saving air-cooled refrigerating unit | |
| CN218511777U (en) | Environment simulation equipment capable of solving cold balance oil return | |
| CN217929279U (en) | Parallel refrigeration compressor unit with function of reducing air inlet temperature | |
| CN214533543U (en) | Compressor test 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 |