CN109764578A - The compressor oil recovery system and method for air-conditioning system - Google Patents
The compressor oil recovery system and method for air-conditioning system Download PDFInfo
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- CN109764578A CN109764578A CN201910104857.0A CN201910104857A CN109764578A CN 109764578 A CN109764578 A CN 109764578A CN 201910104857 A CN201910104857 A CN 201910104857A CN 109764578 A CN109764578 A CN 109764578A
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- 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
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
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- 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
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- 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
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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- 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
- F25B45/00—Arrangements for charging or discharging refrigerant
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- 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)
- Compressor (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses the compressor oil recovery systems and method of a kind of air-conditioning system, belong to compressor of air conditioner oil recovery techniques field.The compressor oil recovery system of air-conditioning system of the present invention includes air-conditioning system and refrigerant recovering charging machine, two ports of refrigerant recovering charging machine are connected to air-conditioning system respectively, and it is configured as filling liquid refrigerants toward air-conditioning system by one port to dissolve the compressor oil of air-conditioning system, recycles the mixture of refrigerant and compressor oil from air-conditioning system by its another port.The compressor oil recovery system of air-conditioning system of the present invention recycles compressor oil by filling refrigerant into air-conditioning system, the compressor oil almost all recycling in air-conditioning system can be handled under the premise of not removing any part of air-conditioning system, the compressor oil that known quantity can also be injected into air-conditioning system after compressor oil recycling, guarantees that the performance of air-conditioning system is stablized.
Description
Technical field
The present invention relates to a kind of recycling of the compressor oil of compressor of air conditioner oil recovery techniques field more particularly to air-conditioning system
System and method.
Background technique
Within air-conditioning systems, fluid media (medium) is mainly made of refrigerant and compressor oil, refrigerant and compressor oil be in mixing,
Dissolved state.Refrigerant evaporates (being converted into gaseous state from liquid to reduce environment temperature) in air conditioner loop under the driving of compressor
With condensation (being converted into liquid from gaseous state to radiate), and compressor oil provides lubrication for compressor.In air conditioner loop, for not
Additive of same-action, such as sealing agent, the UV dyestuff of detection leakage and the synergist for promoting cooling etc. are dissolved in compressor oil
In, and fluid circulation is carried out in air conditioner loop in company with main fluid medium；In addition, wet steam, acidic materials and metal powder etc. can
The pollutant that air-conditioning system can be damaged also is blended in compressor oil.
When air-conditioning system periodic maintenance, refrigerant passes through the dry filtrating equipment of refrigerant recovering charging machine, Oil-gas Separation, filtering
Purification process and be recovered, treated cleaning refrigerant is stored in refrigerant tank, and refrigerant is finally filled to sky from refrigerant tank
In adjusting system.But the compressor oil mass carried when refrigerant recovering is limited, it is difficult to recycle whole compressor oils and can not determine sky
The oil mass of residual compression machine oil in adjusting system.
In addition, in most cases, repairing air-conditioning system and being related to replacing air supply rate.Air-conditioning system circuit is usually by pressing
Contracting machine, condenser, Filter dryer, expansion valve and evaporator composition.Compressor oil is distributed in compressor, condenser, is filtered dry excessively
In dry device and evaporator, but compressor oil is difficult to determine in the ratio of air conditioner loop each section, because for different automobiles
Manufacturer and vehicle, the ratio variation in each section is very greatly.Thus, when replacing air supply rate, due to the replacement component
Caused machine oil loss amount is difficult to determine.
From the foregoing, it will be observed that being led to not since contaminated compressor oil cannot be recycled completely to the pollution in compressor oil
Object is handled, and after air-conditioning maintenance or repairing, the compressor oil mass in air-conditioning system is uncertain, leads to air-conditioning system
It repeats to safeguard.
Therefore, the present invention be desirable to provide a kind of method that whole compressor oils can be recycled as far as possible from air-conditioning system and
System, to overcome disadvantages mentioned above.
Summary of the invention
It is an object of the invention to propose a kind of good air-conditioning system of the recovering effect of compressor oil for air-conditioning system
Compressor oil recovery system and method.
For this purpose, on the one hand, the invention adopts the following technical scheme:
A kind of compressor oil recovery system of air-conditioning system, comprising:
Air-conditioning system；And
Refrigerant recovering charging machine, two port are connected to the air-conditioning system respectively, and the refrigerant recovering charging machine
It is configured as filling liquid refrigerants to the air-conditioning system by port described in one to dissolve the compression of the air-conditioning system
Machine oil recycles the mixture of refrigerant and compressor oil by its another described port from the air-conditioning system.
In one embodiment, two ports of the refrigerant recovering charging machine pass through control valve and the air-conditioning system respectively
Two ports connection of system, the refrigerant recovering charging machine includes being sequentially communicated:
Gs-oil separator, import are connected to a port of the air-conditioning system；
First compressor, import are connected to the refrigerant exit of the gs-oil separator；And
Refrigerant holding vessel, the outlet of refrigerant recovering entrance and first compressor, liquid refrigerants outlet with
Another described port connection of the air-conditioning system.
In one embodiment, the oil outlet of the gs-oil separator is provided with control valve, the refrigerant holding vessel
Gaseous coolant outlet is connected to by control valve with the gs-oil separator.
In one embodiment, it is respectively provided at the refrigerant exit of the import of the gs-oil separator and the gs-oil separator
There is control valve.
In one embodiment, the refrigerant recovering charging machine further include:
Caching container is connected to by control valve with the oil outlet of the gs-oil separator；And
Old oil vessel is connected to by control valve with the oil outlet of the caching container.
In one embodiment, two ports of the refrigerant recovering charging machine pass through control valve and the air-conditioning system
The high-pressure side of the second compressor be connected to low-pressure side.
In one embodiment, pressure sensing is provided between the import and the air-conditioning system of first compressor
Device.
On the other hand, the invention adopts the following technical scheme:
A kind of compressor oil recovery method of air-conditioning system, this method are to fill liquid refrigerants to air-conditioning system to dissolve sky
The compressor oil of adjusting system recycles the mixture of refrigerant and compressor oil from air-conditioning system.
In one embodiment, the compressor oil recovery method of the air-conditioning system includes circulation 1 and recycles in 2 at least
It is a kind of, wherein circulation 1 recycles refrigerant and pressure to inject liquid refrigerants to air-conditioning system low-pressure side, from the high-pressure side of air-conditioning system
The mixture of contracting machine oil, circulation 2 recycle cold to inject liquid refrigerants to the high-pressure side of air-conditioning system from the low-pressure side of air-conditioning system
The mixture of matchmaker and compressor oil.
In one embodiment, the compressor oil recovery method of the air-conditioning system is realized based on refrigerant recovering charging machine,
The refrigerant recovering charging machine includes the gs-oil separator being sequentially communicated, the first compressor and refrigerant holding vessel；Circulation 1 and circulation
2 include the following steps:
Two ports of the refrigerant recovering charging machine are connected to the high-pressure side of air-conditioning system and low-pressure side by S1 respectively,
Circulation time of the default refrigerant in the air-conditioning system and the refrigerant recovering charging machine, the first compressor is opened, from refrigerant
It recycles charging machine a port and fills liquid refrigerants to air-conditioning system, by another port of refrigerant recovering charging machine from air-conditioning
Compressor oil and refrigerant mixture are recycled in system, and refrigerant and compressor oil are separated in the gs-oil separator.
In one embodiment, circulation 1 and circulation 2 also include the following steps after step S1:
S21 closes the control valve between two ports of the refrigerant recovering charging machine and the air-conditioning system, opens institute
The first compressor is stated until the pressure of first upstream of compressor reaches the first preset value；
S3 closes first compressor, closes the control between the import and the air-conditioning system of the gs-oil separator
Valve processed opens the control valve of the oil outlet of the gs-oil separator, open the gaseous coolant outlet of the refrigerant holding vessel with
Control valve between the gaseous coolant import of the gs-oil separator is the gaseous coolant in the refrigerant holding vessel to be injected into
It pressurizes in the gs-oil separator and then emits the compressor oil of the gs-oil separator lower part；
In one embodiment, the refrigerant recovering charging machine further include: caching container passes through control valve and the oil
The oil outlet of gas separating device is connected to；
Comprising steps of S22, opens the fuel-displaced of the gs-oil separator between circulation 1 and the step S21 and S3 that recycle 2
Control valve between mouth and the caching container keeps it turning on first compressor up to the pressure of first upstream of compressor
Power reaches the second preset value.
In one embodiment, the compressor oil recovery method of the air-conditioning system executes circulation 1 and/or circulation 2 reaches
After preset time, following steps are executed:
S4: closing the control valve between the liquid refrigerants outlet end and the air-conditioning system of the refrigerant recovering charging machine,
The control valve between the import of the gs-oil separator and the air-conditioning system is opened, opens first compressor until described
The pressure of first upstream of compressor reaches third preset value；
S5 closes first compressor, closes the control between the import and the air-conditioning system of the gs-oil separator
Valve processed opens the control valve of the oil outlet of the gs-oil separator, opens the oil outlet and old oil vessel of the caching container
Between control valve, open refrigerant holding vessel gaseous coolant outlet and the gs-oil separator gaseous coolant import between
Gaseous coolant in the refrigerant holding vessel is injected into the gs-oil separator with will be under the gs-oil separator by control valve
The compressor oil and the compressor oil in caching container in portion are discharged into old oil vessel.
Beneficial effects of the present invention are as follows:
The compressor oil recovery system and method for air-conditioning system provided by the invention, can be cold toward air-conditioning system filling liquid
Matchmaker to dissolve compressor oil, and from air-conditioning system recycle and separate refrigerant and compressor oil mixture, pass through the more of refrigerant
Secondary circulation dissolution, can be almost complete by the compressor oil in air-conditioning system under the premise of not removing any part of air-conditioning system
Portion's recycling is handled, and can also inject the compressor oil of known quantity into air-conditioning system after compressor oil recycling；Moreover, energy
Enough pressurizeed using the gaseous coolant in refrigerant holding vessel to gs-oil separator the compressor oil in gs-oil separator to be discharged；Separately
Outside, caching container is arranged in the present invention, can periodically be emitted into compressor oil in caching container and next time to caching container
The refrigerant recycled in caching container that takes a step forward of middle oil extraction, refrigerant loss are small；Furthermore the present invention is from both direction for air-conditioning
Compressor oil in system is rinsed recycling, and the flushing effect of compressor oil is more preferable, recovery efficiency is higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the compressor oil recovery system for the air-conditioning system that the specific embodiment of the invention provides；
Fig. 2 is the compressor oil recovery system for showing the refrigerant recovering charging machine internal structure of present embodiment
Structural schematic diagram；
Fig. 3 is the structural schematic diagram for the compressor oil separator that present embodiment provides；
Fig. 4 is the structural block diagram for the control system that present embodiment provides；
Fig. 5 is the flow chart of the compressor oil recovery method for the air-conditioning system that the specific embodiment of the invention provides；
Fig. 6 is the flow chart of step A；
Fig. 7 is the flow chart of step B；
Fig. 8 is the flow chart of step B10；
Fig. 9 is the flow chart of step B20；
Figure 10 is the flow chart of step C.
Appended drawing reference:
100, air-conditioning system；200, refrigerant recovering charging machine；300, control system；
101, the second compressor；102, condenser；103, expansion valve；104, evaporator；105, control valve 11；106, it controls
Valve 12 processed；107, high-pressure side；108, low-pressure side；
201, compressor oil separator；202, the first compressor；203, refrigerant holding vessel；204, new compressor oil holds
Device；205, fresh oil weighing sensor；206, refrigerant weighing sensor；207, pressure sensor；208, high-voltage switch gear；209, vacuum
Pump；210, control valve one；211, control valve two；212, control valve three；213, control valve four；214, control valve nine；215, it controls
Valve ten；216, control valve 13；217, check valve；2011, gs-oil separator；2012, caching container；2013, old oil vessel；
2014, control valve five；2015, control valve six；2016, control valve seven；2017, control valve eight；2031, liquid refrigerants exports；
2032, refrigerant recovering entrance；20111, the import of gs-oil separator；20112, gaseous coolant import；20113, gs-oil separator
Refrigerant exit；20114, oil outlet；
301, controller；302, display device；303, input unit.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Present embodiment provides a kind of compressor oil recovery system of air-conditioning system, as shown in Figures 1 to 4,
Including air-conditioning system 100, refrigerant recovering charging machine 200 and control system 300.Air-conditioning system 100 can with but be not limited to automobile-used
Air-conditioning system, or other need to recycle the air-conditioning system of compressor oil, with car air-conditioner system in present embodiment
It is introduced for system.
Fig. 1 is the schematic block diagram of the compressor oil recovery system for the air-conditioning system that present embodiment provides.
As shown in Figure 1, air-conditioning system 100 generally includes the second compressor 101 being sequentially communicated, condenser 102, expansion valve 103 and steams
Send out device 104.Two ports of refrigerant recovering charging machine 200 are connected to air-conditioning system 100 respectively, optionally, refrigerant recovering filling
Two ports of machine 200 are connected to (wherein air-conditioning system 100 with the high-pressure side 107 of air-conditioning system 100 and low-pressure side 108 respectively
High-pressure side 107 refers to positioned at the side of 101 outlet downstream of the second compressor when air-conditioning system 100 is in normal operating conditions, empty
The low-pressure side 108 of adjusting system 100 refers to when air-conditioning system 100 is in normal operating conditions positioned at 101 import of the second compressor
The side of upstream), refrigerant recovering charging machine 200 is configured as filling liquid refrigerants to air-conditioning system 100 by one port
To dissolve the compressor oil of the air-conditioning system, refrigerant and compression are recycled from air-conditioning system 100 by its another port
The mixture of machine oil, and compressor oil in mixture is separated in refrigerant recovering charging machine 200, pass through the circulation of refrigerant
Dissolution, can be almost complete by the compressor oil in air-conditioning system 100 under the premise of not removing any part of air-conditioning system 100
Portion's recycling is handled, and can also be injected the compressor oil of known quantity into air-conditioning system 100 after compressor oil recycling, be guaranteed
The performance of air-conditioning system is stablized.
Fig. 2 is the schematic diagram for showing 200 internal structure of refrigerant recovering charging machine of present embodiment.Such as Fig. 2 institute
Show, refrigerant recovering charging machine 200 includes compressor oil separator 201, the first compressor 202, refrigerant holding vessel 203 and new pressure
Contracting engine oil container 204.Compressor oil separator 201, the first compressor 202 and refrigerant holding vessel 203 are sequentially communicated, compressor
Oil separating device 201 is used to isolate compressor oil from the mixture of the refrigerant and compressor oil that recycle in air-conditioning system 100,
First compressor 202 is used to provide the power of refrigerant and compressor oil in recycling air-conditioning system 100, and refrigerant holding vessel 203 is
The container of sealing is previously stored in refrigerant holding vessel 203 before recycling compressor oil and presses for dissolving in air-conditioning system 100
The refrigerant of contracting machine oil, coolant storage tank 203 are also used to store the refrigerant isolated from compressor oil separator 201, refrigerant storage
It deposits each inlet and outlet of tank 203 and preferably but is not limited to be provided with control valve, new compressor oil container 204 is for pressing
The recycling of contracting machine oil finish after to the new compressor oil of 100 feed of air-conditioning system.In the first compressor 202 and refrigerant holding vessel 203
Check valve 217 is preferably provided between refrigerant recovering entrance 2032, so that refrigerant can only be stored up from the first compressor 202 to refrigerant
Deposit 203 one-way flow of tank.In order to realize start and stop, the either port of two ports of refrigerant recovering charging machine 200 passes through control
Valve is connected to the high-pressure side of air-conditioning system 100 and low-pressure side, each control valve herein can with but be not limited to solenoid valve.
Optionally, the input end of refrigerant recovering charging machine 200 (i.e. close to one end of 201 import of compressor oil separator) setting with
The control valve 1 that the high-pressure side 107 of air-conditioning system 100 is connected to, in the input end setting of refrigerant recovering charging machine 200 and air-conditioning
The control valve 2 211 that the low-pressure side 108 of system 100 is connected to, (is leaned in the liquid refrigerants outlet end of refrigerant recovering charging machine 200
One end of the liquid refrigerants outlet 2031 of nearly refrigerant holding vessel 203) control being connected to the high-pressure side 107 of air-conditioning system 100 is set
Valve 3 212 processed is arranged in the liquid refrigerants outlet end of refrigerant recovering charging machine 200 and is connected to the low-pressure side 108 of air-conditioning system 100
Control valve 4 213.Liquid refrigerants when opening controlling valve 1 and control valve 4 213, in refrigerant recovering charging machine 200
Filled through low-pressure side 108 into air-conditioning system 100 by control valve 4 213, the refrigerant and compressor oil in air-conditioning system 100 it is mixed
It closes object and enters refrigerant recovering charging machine 200 from the high-pressure side of air-conditioning system 100 107；When opening controlling valve 2 211 and control valve three
When 212, the liquid refrigerants in refrigerant recovering charging machine 200 is filled through high-pressure side 107 into air-conditioning system by control valve 3 212
100, the mixture of refrigerant and compressor oil in air-conditioning system 100 enters refrigerant recovering from the low-pressure side 108 of air-conditioning system 100
Charging machine 200.So as to be rinsed recycling, compressor oil for the compressor oil in air-conditioning system 100 from both direction
Flushing effect is more preferable, recovery efficiency is higher.It should be noted that can also be replaced with a four-way valve in other embodiments
Control valve 1, can be by the both ends of refrigerant recovering charging machine 200 and air-conditioning system to this four control valves of control valve 4 213
The corresponding connection in 100 two ports.It should be noted that refrigerant recovering charging machine can also be enabled in other embodiments
200 two ports are connected to one of the high-pressure side 107 of air-conditioning system 100 and low-pressure side 108 respectively, for example, enabling refrigerant
The input end of recycling charging machine 200 is connected to by control valve with the high-pressure side 107 of air-conditioning system 100, refrigerant recovering charging machine 200
Input end be connected to low-pressure side 108 by control valve；Alternatively, the input end of refrigerant recovering charging machine 200 is enabled to pass through control valve
It is connected to the low-pressure side 108 of air-conditioning system 100, the input end of refrigerant recovering charging machine 200 is connected by control valve and high-pressure side 107
It is logical；In the embodiment, only there is a direction to be rinsed recycling to the compressor oil in air-conditioning system 100.It needs to illustrate
Ground is, as depicted in figs. 1 and 2, for the ease of individually operated, the air-conditioning system to refrigerant recovering charging machine 200 and air-conditioning system 100
100 both ends can with but be not limited to be respectively arranged with control valve 11 and control valve 12,11 He of control valve
Control valve 12 can with but be not limited to needle-valve.When control valve 11 and control valve is arranged in the both ends of air-conditioning system 100
When 12, control valve one is can be set or is not provided with to control valve four.
Please continue to refer to Fig. 2, can also be arranged in present embodiment through control valve 13 and air-conditioning system
The vacuum pump 209 of 100 connections, vacuum pump 209 can vacuumize air-conditioning system 100 before injecting new compressor oil.
New compressor oil container 204 is connected to by control valve 10 with air-conditioning system 100, in order to be controlled.New compressor oil holds
The bottom of device 204 is communicated with fresh oil weighing sensor 205, can be calculated by the measurement result of fresh oil weighing sensor 205
New compressor oil quality and the new compressor oil container 204 of control in new compressor oil container 204 are to air-conditioning system 100
Fuel delivery.The bottom of refrigerant holding vessel 203 is communicated with refrigerant weighing sensor 206, can pass through refrigerant weighing sensor 206
Measurement result calculates the refrigerant quality in refrigerant holding vessel 203.For different air-conditioning systems 100, needed in coolant storage tank 203
It wants pre-stored minimum coolant quantity different, can be set according to parameters such as compressor oil masses initial in air-conditioning system 100
Pre-stored minimum coolant quantity is needed in coolant storage tank 203, can pass through refrigerant weighing and sensing before recycling compressor oil
Whether device 206 is higher than the pre-stored minimum coolant quantity of needs come the coolant quantity judged in coolant storage tank 203.As shown in Fig. 2, can
Pressure sensor 207 to be arranged between the import and air-conditioning system 100 of the first compressor 202, to know that refrigerant recovering fills
Pressure in machine 200, pressure sensor 207 is preferred but is not limited to setting in control valve 1, control valve 2 211 and pressure
Between the import of contracting oil separating device 201, when opening controlling valve 1 or control valve 2 211, pressure sensor 207 can
To measure the pressure in air-conditioning system 100, when closing control valve 1 or when control valve 2 211, pressure sensor 207 can be with
Only measure the pressure in 202 upstream of the first compressor in refrigerant recovering charging machine 200.It is to be understood that pressure sensing
The quantity of device 207 is not limited to one, and setting position is not limited to above situation, can measure the portion of pressure as needed
The specific setting in position.High-voltage switch gear 208, first compression of the monitoring of high-voltage switch gear 208 can be set in the exit of the first compressor 202
The pressure that machine 202 exports, and high-voltage switch gear 208 is activated when detecting high pressure, suspend removal process, to guarantee refrigerant recovering
The safety of charging machine 200.
Fig. 3 is the structural schematic diagram for the compressor oil separator 201 that present embodiment provides.Please refer to figure
2 and Fig. 3, optionally, compressor oil separator 201 include gs-oil separator 2011, caching container 2012 and old oil vessel
2013.Gs-oil separator 2011 and caching container 2012 are sealing container, and gs-oil separator 2011 has import 20111, gas
State refrigerant inlet 20112, refrigerant exit 20113 and oil outlet 20114, the import 20111 of gs-oil separator 2011, gaseous coolant
Import 20112 and refrigerant exit 20113 preferably but are not limited to be set to the top of gs-oil separator 2011, oil outlet
20114 preferably but be not limited to be set to the bottom of gs-oil separator 2011, so as to which gs-oil separator 2011 will be dropped to
The compressor oil of bottom is completely exhausted out.The import of the refrigerant exit 20113 of gs-oil separator 2011 and the first compressor 202 connects
Logical, the oil outlet 20114 of gs-oil separator 2011 is connected to by control valve 5 2014 with the oil inlet of caching container 2012, is cached
The oil outlet of container 2012 is connected to by control valve 6 2015 with old oil vessel 2013.The entrance of gs-oil separator 2011 is arranged
Control valve 8 2017, the gas of refrigerant holding vessel 203 are provided at the refrigerant exit for having control valve 7 2016, gs-oil separator 2011
State refrigerant exit is connected to by control valve 9 214 with gaseous coolant import 20112, thus when needed to gs-oil separator 2011
Interior injection gaseous coolant in turn arranges the compressor oil in gs-oil separator 2011 to improve the pressure in gs-oil separator 2011
Out, control valve 9 214 is preferred but is not limited to intermittent unlatching.It should be noted that in order to simplify structure, this specific embodiment party
The gaseous coolant outlet of refrigerant holding vessel 203 in formula and the refrigerant recovering entrance of refrigerant holding vessel 203 are same opening, certainly
In other embodiments, the gaseous coolant outlet of refrigerant holding vessel 203 and the refrigerant recovering of refrigerant holding vessel 203 can also be entered
Mouth 2032 is set as different openings.The gaseous coolant outlet of refrigerant holding vessel 203 and recycling entrance 2032 can with but be not limited to
It is set to the top of refrigerant holding vessel 203, the refrigerant steam to volatilize from refrigerant holding vessel 203 directly passes through gaseous coolant outlet
It is entered in gaseous coolant import 20112 with pipeline；Preferably by stretching at the liquid refrigerants outlet 2031 of refrigerant holding vessel 203
The pipeline entered to 203 bottom of refrigerant holding vessel is connected to air-conditioning system 100.It should be noted that control valve 7 2016 and control
Valve 8 2017 is in order to avoid avoiding the refrigerant recycled in refrigerant holding vessel 203 from entering other pipelines when discharging compressor oil
In, to reduce the rate of recovery of refrigerant, in other embodiments, and control valve 7 2016 and/or control can be not provided with
Valve 8 2017.It should be noted that caching container 2012 can be before compressor oil be emitted into old oil vessel 2013 temporarily
Compressor oil is cached, when opening the control valve between caching container 2012 and gs-oil separator 2011, can be returned by refrigerant
Receive refrigerant entrained in the negative pressure recycling caching container 2012 in charging machine 200, to minimize the loss of refrigerant, other implementations
Caching container 2012 can also be not provided in mode.
Fig. 4 schematically shows the control systems 300 of refrigerant recovering charging machine 200.As shown in figure 4, control system 300
Including controller 301, controller 301 can with but be not limited to microprocessor, controller 301 can be received and be read from pressure
Sensor 207, high-voltage switch gear 208, fresh oil weighing sensor 205 and refrigerant weighing sensor 206 signal, and can issue open
Open or close the signal of each control valve, the first compressor 202 and vacuum pump 209.Control system 300 can also be connected with aobvious
Showing device 302 and input unit 303, to realize human-computer interaction.
Present embodiment additionally provides a kind of compressor oil recovery method of air-conditioning system, the recovery method can with but
The compressor oil recovery system based on above-mentioned air-conditioning system is not limited to realize.This method is the servicing fluids into air-conditioning system 100
State refrigerant recycles the mixing of compressor oil and refrigerant to dissolve the compressor oil in air-conditioning system 100 from air-conditioning system 100
Object.Preferably recycle refrigerant in air-conditioning system 100 and refrigerant recovering charging machine 200 in this method, and will be from air-conditioning system
The compressor oil and refrigerant mixture recycled in system 100 is separated.By making a certain amount of refrigerant in air-conditioning system in this method
Compressor oil is recycled in system 100, it can will be in air-conditioning system 100 under the premise of not removing any part of air-conditioning system 100
The recycling of compressor oil almost all, and then can inject the compressor oil of known quantity into air-conditioning system 100, guarantee air-conditioning system
The performance of system is stablized.
Specifically, the compressor oil recovery method of air-conditioning system 100 includes the following steps:
A: control system 300 initializes.
B: 1 and circulation 2 are alternately recycled, wherein low-pressure side of the circulation 1 from the second compressor 101 of air-conditioning system 100
108 fill liquid refrigerants into air-conditioning system 100, and recycle refrigerant and compressor oil from the high-pressure side of air-conditioning system 100 107,
Circulation 2 fills liquid refrigerants into air-conditioning system 100 from the high-pressure side 107 of the second compressor 101 of air-conditioning system 100, and from
The low-pressure side 108 of air-conditioning system 100 recycles refrigerant and compressor oil.Wherein, the execution sequence of circulation 1 and circulation 2 is unlimited
First to carry out circulation 1 or first carry out circulation 2, it is introduced for first carrying out circulation 1 in present embodiment.Recycle 1 He
Circulation 2 continuously performs at least once respectively, in present embodiment by taking circulation 1 and circulation 2 continuously perform three times respectively as an example
It is introduced, wherein the number that circulation 1 and circulation 2 execute is calculated by the number of the outside oil extraction of gs-oil separator 2011
, outside oil extraction 1 time is that circulation performs 1 time.In addition, the priority of refrigerant circulation time is excellent in present embodiment
It is selected as being higher than the priority of the cycle-index of circulation 1 and circulation 2, i.e. whether the recycling of compressor oil is completed to reach with refrigerant circulation
Subject to preset time.
C: whole refrigerants and processing compressor oil are recycled.
Wherein, step A may include steps of:
A1 sets refrigerant circulation time T.Because the air-conditioning system 100 of different automakers and vehicle has different
Capacity, thus from different air-conditioning systems 100 recycle whole compressor oils needed for refrigerant circulation time T be different, time T
It is set according to the concrete condition of air-conditioning system 100.
Time variable t1, t2 and setting oil separation frequency n 1 and n2 is arranged in A2；Wherein t1 is that currently practical refrigerant follows
Ring time, t1 initial value are set as zero and t1 and increase over time, separate compressor to be compared to control recycling with T
The total cycle time of oil；T2 is 2 actual execution times of a certain circulation 1 or circulation, and the initial value of t2 is set as zero and t2 with a certain
The time that circulation 1 or circulation 2 execute elapses and increases, in order to control the advance of compressor oil from 2011 discharge of gs-oil separator
The refrigerant circulation of row preset time is introduced in present embodiment by taking 90s as an example；N1 is to recycle 1 time continuously performed
Number, n2 be 2 numbers that continuously perform of circulation, and n1 and n2 can be equal or differ, with n1 and n2 in present embodiment
It is to be introduced for 3, in removal process, the initial value of n1 and n2 are zero, n1 and n2 is as circulation 1 or circulation 2 are continuously held
Capable number gradually increases, when n1 or n2 reaches setting value, then end loop 1 or circulation 2.
A3, controller 301 read the testing result of refrigerant weighing sensor 206 and high-voltage switch gear 208, with determine whether can
To continue to operate, step B is if it is carried out, if artificial treatment otherwise can be prompted.For example, if high-voltage switch gear 208 is beaten
It opens, then abort operation and prompts artificial treatment；If the testing result of refrigerant weighing sensor 206 is greater than refrigerant holding vessel 203
Minimum needed for the testing result of Maximum Permissible Weight and/refrigerant weighing sensor 206 is less than the recycling compressor oil of setting is cold
Matchmaker's amount, then abort operation and prompt artificial treatment.
Wherein, step B may include steps of:
B10, refrigerant carry out default circulation 1 between refrigerant recovering charging machine 200 and air-conditioning system 100, this is specific real
It applies and is recycled 1 in mode three times, then refrigerant changes flow direction, executes step B20.
B20, refrigerant carry out default circulation 2 between refrigerant recovering charging machine 200 and air-conditioning system 100, this is specific real
It applies and is recycled 2 in mode three times.
Wherein step B10 includes the following steps:
B11, opening controlling valve 1, control valve 4 213, control valve 7 2016 and control valve 8 2017 are to return refrigerant
Two ports for receiving charging machine 200 are connected to air-conditioning system 100 respectively, are opened the first compressor 202 and are continued to t2=90s,
Liquid refrigerants is filled to 100 low-pressure side 108 of air-conditioning system, recycles refrigerant and compressor oil from the high-pressure side of air-conditioning system 100 107
Mixture, mixture 2011 in gs-oil separator in separate, compressor oil drops in gs-oil separator 2011 bottom,
Part refrigerant after separation is stored in refrigerant holding vessel 203 after the first compressor 202.
B121 closes control valve 1 and control valve 4 213, keeps it turning on the first compressor 202 until the first compressor
The pressure of 202 upstreams reaches the first preset value, and (registration of pressure sensor 207 is the pressure of 202 upstream of the first compressor
Value), the first preset value is 0bar in present embodiment, to recycle refrigerant from gs-oil separator 2011.
B122, opening controlling valve 5 2014, while the first compressor 202 is kept it turning on until 202 upstream of the first compressor
Pressure reach the second preset value, the second preset value preferably but is not limited to less than the first preset value, in present embodiment
Second preset value Wei≤- 0.5bar makes the minimization of loss of refrigerant to recycle the refrigerant in caching container 2012.
B13 closes the first compressor 202, closes control valve 7 2016 and control valve 8 2017, keeps it turning on control valve five
2014,9 214 preset time of opening controlling valve, such as 10 seconds, control valve 9 214 preferably but be not limited to intermittently to open with
The compressor oil of 2011 lower part of gs-oil separator is discharged into caching container 2012, the compressor oil in gs-oil separator 2011
Control valve 5 2014 is closed after discharge.Make in step B121 and step B122 compressor upstream pressure value reach 0bar and with
Under, it is on the one hand to recycle refrigerant to be on the other hand to enable the gaseous coolant energy in refrigerant holding vessel 203 in step B13
Enough enter under the action of negative pressure in gs-oil separator 2011 and pressurizes so that the compressor oil in gs-oil separator 2011 to be discharged.
B14, comparison variable t1 and T enter step C if t1≤T, otherwise carry out step B15.
Variable oil separation frequency n 1 is increased by 1, and comparison variable n1 and value 3, if n1=3, n1 and t2 are zeroed by B15
And step B20 is carried out, specifically, B21 is carried out, that is, carries out circulation 2, otherwise t2 zero and progress step B11.
Wherein step B20 includes the following steps:
B21, opening controlling valve 2 211, control valve 3 212, control valve 7 2016 and control valve 8 2017 are to return refrigerant
Two ports for receiving charging machine 200 are connected to air-conditioning system 100 respectively, are started the first compressor 202 and are continued to t2=90s,
Liquid refrigerants is filled into air-conditioning system 100 by the high-pressure side 107 of air-conditioning system 100, from the low-pressure side of air-conditioning system 100
108 recycling refrigerants and compressor oil mixture, mixture 2011 in gs-oil separator in separate, compressor oil drops to oil
2011 bottom in gas separating device, the refrigerant after separation are stored into the refrigerant holding vessel 203 of refrigerant recovering charging machine 200, thus
Realize the flow direction flowing along circulation 2.
B221 closes control valve 2 211 and control valve 3 212, keeps it turning on the first compressor 202 until the first compressor
The pressure of 202 upstreams reaches the first preset value, and the preset value is 0bar in present embodiment, with from gs-oil separator 2011
Middle recycling refrigerant.
B222, opening controlling valve 5 2014, while the first compressor 202 is kept it turning on until 202 upstream of the first compressor
Pressure reach the second preset value, the second preset value preferably but is not limited to less than the first preset value, in present embodiment
Second preset value Wei≤- 0.5bar, to recycle the refrigerant in caching container 2012.
B23 closes the first compressor 202, closes control valve 7 2016 and control valve 8 2017, keeps it turning on control valve five
2014,9 214 preset time of opening controlling valve, such as 10 seconds, control valve 9 214 is preferred but is not limited to intermittently open,
The compressor oil of 2011 lower part of gs-oil separator to be discharged into caching container 2012, the compressor in gs-oil separator 2011
Control valve 5 2014 is closed after oil discharge.
B24, comparison variable t1 and T enter step C if t1≤T, otherwise carry out step B25.
Variable oil separation frequency n 2 is increased by 1, and comparison variable n2 and value 3, if n2=3, n2 and t2 are zeroed by B25
And step B10 is carried out, specifically, B11 is carried out, that is, carries out circulation 1, otherwise t2 zero and progress step B21.
Step C includes the following steps:
C1 closes control valve 3 212 and control valve 4 213, opening controlling valve 1, control valve 2 211, control valve seven
2016, control valve 8 2017, the first compressor of unlatching 202 reach third preset value up to the pressure of 202 upstream of the first compressor,
In present embodiment, third preset value can with but do not limit to equal to the first preset value, third is pre- in present embodiment
If value is 0bar；
C2 keeps it turning on first compressor 202, and opening controlling valve 5 2014 is up to 202 upstream of the first compressor
Pressure reaches the 4th preset value, the 4th preset value can with but do not limit to equal to less than third preset value, in present embodiment,
4th Yu She Zhi≤- 0.5bar；
C3 closes the first compressor 202, closes control valve 1, control valve 2 211, control valve 7 2016 and control valve
8 2017, opening controlling valve 6 2015,9 214 preset time of opening controlling valve, such as 10 seconds, control valve 9 214 is preferably but not
It is limited as intermittently opening, the gaseous coolant stated in refrigerant holding vessel 203 is injected into gs-oil separator 2011 with will be oily
The compressor oil and the compressor oil in caching container 2012 of 2011 lower part of gas separating device are emitted into old oil vessel 2013.
Then whole process terminates.
It should be noted that being arranged not at the import 20111 of gs-oil separator 2011 and refrigerant exit 20113 at other
In the embodiment of control valve 7 2016 and control valve 8 2017, control valve 7 2016 and control valve eight can be saved in each step
2017 opening and closing operation, and combine and whether need to be connected to gs-oil separator with air-conditioning system to determine whether needing to open
Open other control valves between import, refrigerant exit and the air-conditioning system of gs-oil separator.Such as in 2011 row of gs-oil separator
When oily, if being not provided with control valve 7 2016 and control valve 8 2017, the input end of refrigerant recovering charging machine can be closed
The outlet end of control valve 1, control valve 2 211 and refrigerant recovering charging machine between air-conditioning system and air-conditioning system
Between control valve 3 212, control valve 4 213, then refrigerant holding vessel 203 injects gaseous coolant into gs-oil separator 2011
Carry out oil extraction.Change as control valve 7 2016 and control valve 8 2017 will be closed in step B13 and B23 and is set as closing refrigerant recovering and adds
The outlet of control valve 1, control valve 2 211 and refrigerant recovering charging machine between the input end and air-conditioning system of note machine
Hold air-conditioning system between control valve 3 212, control valve 4 213, but due in gs-oil separator oil extraction refrigerant enter oil
In pipeline other than gas separating device 2011, the rate of recovery of refrigerant can be reduced.
It should be noted that can also only carry out circulation 1 in other embodiments or only carry out circulation 2, recycle 1 and follow
The number that ring 2 executes is unlimited, preferably at least twice, but considers recovery efficiency and time cost, preferably recycles 3-6 times.
It is connected to if the both ends of refrigerant recovering charging machine 200 pass through control valve respectively with the side of air-conditioning system, step B11 and step
In the operation such as B22, the input end of refrigerant recovering charging machine and/or the corresponding control valve of outlet end are opened.
The compressor oil recovery method of air-conditioning system provided by the invention, can be within the default processing time to predefine
The number of refrigerant circulation and oil extraction, to recycle whole compressor oils and refrigerant from air-conditioning system.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (12)
1. a kind of compressor oil recovery system of air-conditioning system characterized by comprising
Air-conditioning system；And
Refrigerant recovering charging machine, two port are connected to the air-conditioning system respectively, and the refrigerant recovering charging machine is matched
It is set to the compressor oil for dissolving the air-conditioning system to air-conditioning system filling liquid refrigerants by port described in one,
The mixture of refrigerant and compressor oil is recycled from the air-conditioning system by its another described port.
2. the compressor oil recovery system of air-conditioning system according to claim 1, which is characterized in that the refrigerant recovering adds
Two ports of note machine pass through control valve respectively and are connected to two ports of the air-conditioning system, the refrigerant recovering charging machine packet
It includes and is sequentially communicated:
Gs-oil separator, import are connected to a port of the air-conditioning system；
First compressor, import are connected to the refrigerant exit of the gs-oil separator；And
Refrigerant holding vessel, the outlet of refrigerant recovering entrance and first compressor, liquid refrigerants outlet with it is described
Another described port connection of air-conditioning system.
3. the compressor oil recovery system of air-conditioning system according to claim 2, the oil outlet of the gs-oil separator
It is provided with control valve, the gaseous coolant outlet of the refrigerant holding vessel is connected to by control valve with the gs-oil separator.
4. the compressor oil recovery system of air-conditioning system according to claim 3, the import of the gs-oil separator and institute
It states and is provided with control valve at the refrigerant exit of gs-oil separator.
5. the compressor oil recovery system of air-conditioning system according to claim 2, which is characterized in that the refrigerant recovering adds
Note machine further include:
Caching container is connected to by control valve with the oil outlet of the gs-oil separator；And
Old oil vessel is connected to by control valve with the oil outlet of the caching container.
6. the compressor oil recovery system of air-conditioning system according to any one of claims 1 to 5, which is characterized in that described
Two ports of refrigerant recovering charging machine pass through high-pressure side and the low pressure of the second compressor of control valve and the air-conditioning system
Side connection.
7. a kind of compressor oil recovery method of air-conditioning system, which is characterized in that air-conditioning system filling liquid refrigerants to dissolve
The compressor oil of air-conditioning system recycles the mixture of refrigerant and compressor oil from air-conditioning system.
8. the compressor oil recovery method of air-conditioning system according to claim 7, which is characterized in that the air-conditioning system
Compressor oil recovery method includes at least one of circulation 1 and circulation 2, wherein recycles 1 to inject to air-conditioning system low-pressure side
Liquid refrigerants, from the mixture of the high-pressure side of air-conditioning system recycling refrigerant and compressor oil, circulation 2 is the high pressure to air-conditioning system
Liquid refrigerants is injected in side, from the mixture of the low-pressure side of air-conditioning system recycling refrigerant and compressor oil.
9. the compressor oil recovery method of air-conditioning system according to claim 8, which is characterized in that
It realizes that the refrigerant recovering charging machine includes the gs-oil separator being sequentially communicated, first based on refrigerant recovering charging machine
Compressor and refrigerant holding vessel；Circulation 1 and circulation 2 include the following steps:
Two ports of the refrigerant recovering charging machine are connected to the high-pressure side of air-conditioning system and low-pressure side by S1 respectively, are preset
Circulation time of the refrigerant in the air-conditioning system and the refrigerant recovering charging machine, from refrigerant recovering charging machine a port to
Air-conditioning system fill liquid refrigerants, by another port of refrigerant recovering charging machine recycle from air-conditioning system compressor oil with
Refrigerant mixture, and refrigerant and compressor oil are separated in the gs-oil separator.
10. the compressor oil recovery method of air-conditioning system according to claim 9, which is characterized in that
Circulation 1 and circulation 2 also include the following steps after step S1:
S21, closes the control valve between two ports of the refrigerant recovering charging machine and the air-conditioning system, opens described the
One compressor is until the pressure of first upstream of compressor reaches the first preset value；
S3 closes first compressor, closes the control valve between the import and the air-conditioning system of the gs-oil separator,
The control valve for opening the oil outlet of the gs-oil separator, open the refrigerant holding vessel gaseous coolant outlet and the oil
Control valve between the gaseous coolant import of gas separating device is to be injected into the oil for the gaseous coolant in the refrigerant holding vessel
It pressurizes in gas separating device and then emits the compressor oil of the gs-oil separator lower part.
11. the compressor oil recovery method of air-conditioning system according to claim 10, which is characterized in that the refrigerant recovering
Charging machine further include: caching container is connected to by control valve with the oil outlet of the gs-oil separator；
Comprising steps of S22 between circulation 1 and the step S21 and S3 that recycle 2, open the oil outlet of the gs-oil separator with
Control valve between the caching container keeps it turning on first compressor until the pressure of first upstream of compressor reaches
To the second preset value.
12. the compressor oil recovery method of air-conditioning system according to claim 11, which is characterized in that the air-conditioning system
Compressor oil recovery method execute circulation 1 and/or circulation 2 after, execute following steps:
S4: closing the control valve between the liquid refrigerants outlet end and the air-conditioning system of the refrigerant recovering charging machine, opens
Control valve between the import of the gs-oil separator and the air-conditioning system opens first compressor until described first
The pressure of upstream of compressor reaches third preset value；
S5 closes first compressor, closes the control valve between the import and the air-conditioning system of the gs-oil separator,
The control valve for opening the oil outlet of the gs-oil separator is opened between the oil outlet of the caching container and old oil vessel
Control valve opens the control valve between the gaseous coolant outlet of refrigerant holding vessel and the gaseous coolant import of the gs-oil separator
Gaseous coolant in the refrigerant holding vessel is injected into the gs-oil separator with by the pressure of the gs-oil separator lower part
Compressor oil in contracting machine oil and caching container is discharged into old oil vessel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104857.0A CN109764578A (en) | 2019-02-01 | 2019-02-01 | The compressor oil recovery system and method for air-conditioning system |
| PCT/CN2019/087604 WO2020155474A1 (en) | 2019-02-01 | 2019-05-20 | Compressor oil recovery system and method for air conditioning system, and refrigerant recovery and filling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104857.0A CN109764578A (en) | 2019-02-01 | 2019-02-01 | The compressor oil recovery system and method for air-conditioning system |
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| CN109764578A true CN109764578A (en) | 2019-05-17 |
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| CN201910104857.0A Pending CN109764578A (en) | 2019-02-01 | 2019-02-01 | The compressor oil recovery system and method for air-conditioning system |
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| WO (1) | WO2020155474A1 (en) |
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| WO2020155474A1 (en) * | 2019-02-01 | 2020-08-06 | 深圳市泰路科技有限公司 | Compressor oil recovery system and method for air conditioning system, and refrigerant recovery and filling machine |
| WO2020223948A1 (en) * | 2019-05-09 | 2020-11-12 | 深圳市泰路科技有限公司 | Air-conditioning system refrigerant recovery and filling system and method |
| 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 |
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| JP7431017B2 (en) | 2019-11-25 | 2024-02-14 | サントリーホールディングス株式会社 | beer frothing device |
| CN113007932A (en) * | 2021-03-18 | 2021-06-22 | 珠海格力电器股份有限公司 | Refrigerant adjusting device, refrigerant recovery equipment and control method of refrigerant recovery equipment |
| CN113432348B (en) * | 2021-07-05 | 2024-03-19 | 珠海格力电器股份有限公司 | Refrigerant circulation quantity adjusting device and method and air conditioning system |
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| WO2020155474A1 (en) | 2020-08-06 |
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