CN109668354A - The coolant circulating system and its control method that anti-compressor gas bearing is worn - Google Patents
The coolant circulating system and its control method that anti-compressor gas bearing is worn Download PDFInfo
- Publication number
- CN109668354A CN109668354A CN201910111072.6A CN201910111072A CN109668354A CN 109668354 A CN109668354 A CN 109668354A CN 201910111072 A CN201910111072 A CN 201910111072A CN 109668354 A CN109668354 A CN 109668354A
- Authority
- CN
- China
- Prior art keywords
- compressor
- making
- gas bearing
- gas
- tonifying
- 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.)
- Granted
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
- F25B41/00—Fluid-circulation arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
- 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
- F25B2500/06—Damage
-
- 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)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to refrigerant circulation technical field, in particular to a kind of coolant circulating system and its control method.Coolant circulating system provided by the present invention, including internal the first compressor for being equipped with gas bearing, gas-liquid separator and making-up air device in refrigerant circulation circuit where the first compressor, making-up air device is used to the gaseous coolant in gas-liquid separator being supplied to gas bearing, and gas bearing is made to suspend.By adding making-up air device so that the first compressor itself can not Effective Suspension internal gas bearing in the case where, gas bearing can be made to suspend using the gaseous coolant in gas-liquid separator by making-up air device, therefore, the abrasion of gas bearing can be effectively reduced.
Description
Technical field
The present invention relates to refrigerant circulation technical field, in particular to a kind of coolant circulating system and its control method.
Background technique
Static pressure type gas suspension centrifugal compressor is applied in multi-connected air conditioning system, is internally provided with gas axis
It holds, and it passes through the suspension of Lai Shixian gas bearing, so that static pressure type at runtime by coolant charging-up in gas bearing
Gas suspension centrifugal compressor can not need lubricating oil, can remove oil return line, and structure is more simplified, complete machine operational reliability
It is higher.
However, refrigerant can not timely enter gas bearing before static pressure type gas suspension centrifugal compressor steady operation, or
The coolant quantity that person enters gas bearing is less, gas bearing can not Effective Suspension therefore be easy to cause the abrasion of gas bearing,
Compressor damage is even resulted in, machine failure is caused.
Summary of the invention
A technical problem to be solved by this invention is: reducing the abrasion of gas bearing in compressor.
In order to solve the above-mentioned technical problem, one aspect of the present invention provides a kind of coolant circulating system comprising:
Coolant circulating device, comprising:
First compressor, inside are equipped with gas bearing；With
Gas-liquid separator, in the refrigerant circulation circuit where the first compressor；With
Making-up air device makes gas bearing suspend for the gaseous coolant in gas-liquid separator to be supplied to gas bearing.
In some embodiments, making-up air device includes the second compressor, and the second compressor parallel is in refrigerant circulation circuit
On the part between outlet and the air inlet of the first compressor positioned at gas-liquid separator, wherein the air inlet of the second compressor
It is connect with the outlet of gas-liquid separator by the first tonifying Qi flow path, and the exhaust outlet of the second compressor and gas bearing pass through second
The connection of tonifying Qi flow path.
In some embodiments, making-up air device further includes the first controlling valve, and the first controlling valve is arranged in the first tonifying Qi flow path
On, for controlling the on-off and/or flow of the first tonifying Qi flow path；And/or making-up air device further includes the second controlling valve, second adjusts
It controls valve to be arranged on the second tonifying Qi flow path, for controlling the on-off and/or flow of the second tonifying Qi flow path.
In some embodiments, making-up air device further includes refrigerant storage device, the import of refrigerant storage device and the second pressure
The exhaust outlet of contracting machine connects, to store the gaseous coolant being discharged by the second compressor, and outlet and the gas of refrigerant storage device
Bearing connection, is supplied to gas bearing for the gaseous coolant stored.
In some embodiments, refrigerant storage device is set in the second tonifying Qi flow path, alternatively, refrigerant storage device and
Two tonifying Qi flow paths are in parallel.
In some embodiments, refrigerant storage device is set in the second tonifying Qi flow path, and is located at the row of the second compressor
Second controlling valve of on-off and/or flow of the port with being arranged on the second tonifying Qi flow path and for controlling the second tonifying Qi flow path it
Between.
In some embodiments, making-up air device further includes pressure-detecting device, and pressure-detecting device is deposited for detecting refrigerant
Pressure inside storage device.
Another aspect of the present invention additionally provides a kind of multi-connected air conditioner comprising coolant circulating system of the invention.
Further aspect of the present invention additionally provides a kind of control method of coolant circulating system comprising following steps:
Before the first compressor steady operation, making-up air device is controlled by the gaseous coolant in gas-liquid separator and is supplied to gas
Body bearing.
In some embodiments, the gaseous coolant in gas-liquid separator is supplied to gas bearing packet by control making-up air device
It includes:
The second compressor start of making-up air device is controlled, and controls the second compressor inlet of connection and goes out with gas-liquid separator
First tonifying Qi flow path of mouth and the second tonifying Qi fluid communication for connecting the second exhaust outlet of compressor and gas bearing, so that tonifying Qi
Gaseous coolant in gas-liquid separator is supplied to gas bearing by device.
In some embodiments, the gaseous coolant in gas-liquid separator is supplied to gas bearing in control making-up air device
In the process, control method further include:
After the gaseous coolant provided by making-up air device makes gas bearing suspend, the first compressor start is controlled.
In some embodiments, when making-up air device works preset time T 0s, judge that gaseous state provided by making-up air device is cold
Matchmaker has made gas bearing suspend.
In some embodiments, control method is further comprising the steps of:
When the running frequency of the first compressor is greater than or equal to predeterminated frequency F0, control making-up air device is not continued to as gas
Body bearing provides gaseous coolant.
In some embodiments, control making-up air device do not continue to provide gaseous coolant for gas bearing include:
The the second tonifying Qi flow path for controlling making-up air device disconnects, and does not continue to provide gas for gas bearing to control making-up air device
State refrigerant.
In some embodiments, control method is further comprising the steps of:
When the second tonifying Qi flow path disconnects, the second compressor of also control making-up air device works on and to making-up air device
Refrigerant storage device provides gaseous coolant.
In some embodiments, control method is further comprising the steps of:
When the pressure in refrigerant storage device is greater than or equal to preset pressure P0, the second compressor of control is shut down.
In some embodiments, control method is further comprising the steps of:
When the pressure in refrigerant storage device is greater than or equal to preset pressure P0 and detects opening for the first compressor again
When dynamic order, state is shut down in control the second compressor holding, and controls the stream that refrigerant storage device is exported between gas bearing
Road is connected to, in the gaseous coolant inflow gas bearing for storing refrigerant storage device.
Another aspect of the invention additionally provides a kind of device comprising:
Storage unit；With
It is coupled to the processing unit of storage unit, processing unit is configured as based on the instruction execution for being stored in storage unit
Control method of the invention.
By adding making-up air device so that the first compressor itself can not Effective Suspension internal gas bearing the case where
Under, gas bearing can be made to suspend using the gaseous coolant in gas-liquid separator by making-up air device, therefore, can effectively reduced
The abrasion of gas bearing.
By the way that exemplary embodiment of the present invention is described in detail referring to the drawings, other feature of the invention and
Its advantage will become apparent.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 shows the structural schematic diagram of the coolant circulating system of one embodiment of the invention.
Fig. 2 shows the control flow schematic diagrams of coolant circulating device shown in Fig. 1.
In figure:
100, coolant circulating system；
10, outdoor machine system；11, the first compressor；12, four-way valve；13, outdoor heat exchanger；14, electric expansion valve；15,
Gas-liquid separator；
20, indoor set system；21, indoor heat exchanger；
30, making-up air device；31, the first controlling valve；32, the second compressor；33, refrigerant storage device；34, pressure detecting fills
It sets；35, the second controlling valve；
1a, refrigerant circulation circuit；3a, the first tonifying Qi flow path；3b, the second tonifying Qi flow path.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are in no development creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is limiting the scope of the invention；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
In the description of the present invention, it is to be understood that, components are limited using the words such as " first ", " second ", only
It is merely for convenience of distinguishing corresponding components, there is no Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore not
It can be interpreted as limiting the scope of the invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Fig. 1-2 shows the coolant circulating system and its control method of one embodiment of the invention.
Referring to Fig.1-2, coolant circulating system 100 provided by the present invention, comprising:
Coolant circulating device, comprising:
First compressor 11, inside are equipped with gas bearing；With
Gas-liquid separator 15, in the refrigerant circulation circuit 1a where the first compressor 11；With
Making-up air device 30 keeps gas bearing outstanding for the gaseous coolant in gas-liquid separator 15 to be supplied to gas bearing
It is floating.
It, can be in the first compressor being located in refrigerant circulation circuit 1a based on coolant circulating system provided by the present invention
Before 11 steady operations, the gaseous coolant in refrigerant circulation circuit 1a is supplied in the first compressor 11 using making-up air device 30
Gas bearing, the suspension of gas bearing is realized, so as to effectively reduce gas bearing because of 11 steady operation of the first compressor
Sufficient refrigerant can not be provided in time before and caused by abrasion, be conducive to extend the service life of the first compressor 11, reduce cold
The failure rate of matchmaker's circulator improves the functional reliability of coolant circulating system 100.
Also, in the present invention, making-up air device 30, which is supplied to the refrigerant of gas bearing, is obtained from gas-liquid separator 15,
Since the refrigerant come out from gas-liquid separator 15 has already passed through the centrifugation of gas-liquid separator 15, degree of purity is higher, therefore, mends
Device of air 30 extracts refrigerant from gas-liquid separator 15, takes out compared to the other positions (such as condenser) from refrigerant circulation circuit 1a
Refrigerant is taken, liquid (liquid refrigerants and lubricating oil etc.) can be reduced and enter making-up air device 30, the first compressor 11 and gas bearing,
On the one hand it can prevent liquid from influencing the normal work of making-up air device, the first compressor 11 and gas bearing, on the other hand may be used also
To reduce the loss of lubricating oil etc. in coolant circulating device, coolant circulating device is avoided to need frequently to supplement because lubricating oil is lost
The problem of lubricating oil.
In some embodiments of the invention, making-up air device 30 may include the second compressor 32 as pressing mechanism,
Second compressor 32 be parallel to the outlet for being located at gas-liquid separator 15 of refrigerant circulation circuit 1a and first compressor 11 into
On part between port, wherein the outlet of the air inlet and gas-liquid separator 15 of the second compressor 32 passes through the first tonifying Qi stream
Road 3a connection, and the exhaust outlet of the second compressor 32 is connect with gas bearing by the second tonifying Qi flow path 3b.Due to the first compression
It is typically provided with charge air flow path between the air inlet and gas bearing of machine 11, it therefore, can be by by the exhaust of the second compressor 32
Mouth is connect with the air inlet of the first compressor 11, the connection of the second compressor of Lai Shixian 32 exhaust outlet and gas bearing.This feelings
Under condition, the second compressor 32 is used as pressing mechanism, for pressurizeing to the refrigerant come out from gas-liquid separator 15, to meet gas
The pressure requirements that body bearing suspends to gaseous coolant.By the way that the second compressor 32 is arranged, can be provided for gas bearing more lasting
And the gaseous coolant that pressure is more stable, to preferably meet needed for gas bearing suspension.
And the work of making-up air device 30 is controlled for convenience, in the present invention, making-up air device 30 can further include the first regulation
Valve 31, the first controlling valve 31 is arranged on the first tonifying Qi flow path 3a, for controlling the on-off and/or stream of the first tonifying Qi flow path 3a
Amount；And/or making-up air device 30 can further include the second controlling valve 35, the second controlling valve 35 is arranged on the second tonifying Qi flow path 3b,
For controlling the on-off and/or flow of the second tonifying Qi flow path 3b.
By setting the first controlling valve 31 and/or the second controlling valve 35, may be implemented to the first tonifying Qi flow path 3a and/or the
Whether the on-off of two tonifying Qi flow path 3b and/or the control of flow allow to control the second compressor 32 according to the actual situation
It extracts the gaseous coolant of gas-liquid separator 15 and whether send the gaseous coolant extracted to gas bearing, convenient for control tonifying Qi dress
Setting 30 when needed is just gas bearing tonifying Qi, advantageously reduces the shadow that making-up air device 30 works normally coolant circulating device
It rings.
In addition, making-up air device 30 can further include refrigerant storage device 33, cold in some improvement embodiments of the invention
The import of matchmaker's storage device 33 is connect with the exhaust outlet of the second compressor 32, cold to store the gaseous state being discharged by the second compressor 32
Matchmaker, and the outlet of refrigerant storage device 33 is connect with gas bearing, and the gaseous coolant stored is supplied to gas bearing.?
These are improved in embodiment, and refrigerant storage device 33 can play storage to the gaseous coolant by the pressurization of the second compressor 32 and make
With being replaced so as to while being enough levitation gas bearing (such as the refrigerant pressure in refrigerant storage device 33) in any case
In generation, the second compressor 32 provided the gaseous coolant for being used for levitation gas bearing to gas bearing, and then can reduce by the second compressor
32 start-stop time extends the service life of the second compressor 32.
And in order to realize the automatic control to 11 work relationship of making-up air device 30 and the first compressor, refrigerant of the invention follows
Loop system 100 can further include control device, and control device is electrically connected with coolant circulating device and making-up air device 30, and is used for
Before 11 steady operation of the first compressor, making-up air device 30 is controlled by the gaseous coolant in gas-liquid separator 15 and is supplied to gas
Bearing.
Based on set control device, making-up air device 30 can preferably cooperate with the first compressor 11, and tonifying Qi fills
It is automatically gas bearing tonifying Qi that 30, which are set, before 11 steady operation of the first compressor, so that gas bearing can not be based on the first pressure
When gaseous coolant provided by contracting machine 11 suspends, it can suspend by gaseous coolant provided by making-up air device 30, so as to
Reduce abrasion of the gas bearing before 11 steady operation of the first compressor.
It in the present invention, both may include that the first compressor 11 not yet starts before 11 steady operation of the first compressor
Stage also may include that the first compressor 11 has been started up, but steady-working state has not yet been reached, so that being not possible to as gas
Bearing provides the stage of sufficient gaseous coolant, can also include that the first compressor 11 never starts to the entire rank before steady operation
Section.
For example, control device of the invention can the first compressor 11 starting before i.e. control making-up air device 30 start by
Gaseous coolant in gas-liquid separator 15 is supplied to gas bearing, and when the first compressor 11 reaches steady-working state
Control making-up air device 30 stops to gas bearing tonifying Qi, in this way, before 11 steady operation of the first compressor, gas bearing can be with
It suspends under the action of making-up air device 30, and after 11 steady operation of the first compressor, gas bearing again can be in the first pressure
It suspends under the action of the provided refrigerant of contracting machine 11, so that gas bearing whole can suspend, realizes the first compressor 11
Whole operational process without abrasion.Wherein, whether the first compressor 11 has reached steady-working state, can be according to the first pressure
The running frequency of contracting machine 11 judges.For example, control device of the invention can be greater than in the running frequency of the first compressor 11
Or when being equal to predeterminated frequency F0, control making-up air device 30 does not continue to provide gaseous coolant to gas bearing.In this case, operation
Frequency is greater than or equal to the mark that predeterminated frequency F0 is had reached steady operational status as the first compressor 11, is conducive to control
Device processed more accurately controls the stopping of making-up air device 30 and continues as gas bearing tonifying Qi.
In above process, making-up air device 30 can be controlled after detecting the start command of coolant circulating device
It starts to work, gas bearing will be supplied to after the gaseous coolant pressurization in gas-liquid separator 15, and provided in making-up air device 30
Gaseous coolant make gas bearing suspend and then control the first compressor 11 starting.In this way, the first compressor 11 is in gas axis
It holds suspension to restart later, wears smaller, longer life expectancy.Wherein, when making-up air device 30 includes the second compressor 32, control dress
The starting of the second compressor 32 can be controlled, and control the first tonifying Qi stream after detecting the start command of coolant circulating device by setting
Road 3a and the second tonifying Qi flow path 3b are connected to, and the gaseous coolant in Lai Shixian gas-liquid separator 15 is supplied to the pressurization of gas bearing
It gives.And whether gaseous coolant provided by making-up air device 30 has made gas bearing suspend, it can be according to the work of making-up air device 30
Time judges, in order to judge and control, for example, control device can be when making-up air device 30 works preset time T 0s, i.e.,
Judge that gaseous coolant provided by making-up air device 30 has made gas bearing suspend.
After the starting of the first compressor 11, it also can use the second compressor 32 and continue as gas bearing tonifying Qi, until
First compressor 11 reaches steady-working state, to realize the continuous suspension of gas bearing, reduces abrasion.
In addition, control making-up air device 30 does not continue to provide to gas bearing when the first compressor 11 reaches stable state
Gaseous coolant can both be shut down by directly controlling the second compressor 32 and be realized, can also pass through the second tonifying Qi flow path of cutting
The mode of 3b is realized.And in the case where making-up air device 30 further includes refrigerant storage device 33, preferably in the first compressor 11
Running frequency be greater than or equal to predeterminated frequency F0 when, make the second compressor 32 by way of cutting off the second tonifying Qi flow path 3b
Do not continue to gas bearing provide gaseous coolant, while keep the second compressor 32 work on, make the second compressor 32 to
Refrigerant storage device 33 provides gaseous coolant, in this way, the gaseous coolant through being overpressurized can be stored in refrigerant storage device 33
In, in case use when restarting 11 next time of the first compressor, to advantageously reduce the start-stop time of the second compressor 32.
Further, in order to shorten working time of the second compressor 32, after stopping to gas bearing tonifying Qi, the second pressure
Contracting machine 32 can be reached in the pressure in refrigerant storage device 33 without being filled with refrigerant into refrigerant storage device 33 always
It is taken, that is, is stopped working to levitation gas bearing, be conducive to extend the working life of the second compressor 32 in this way.Wherein, it controls
Device processed can judge in refrigerant storage device 33 when the pressure in refrigerant storage device 33 is greater than or equal to preset pressure P0
Refrigerant pressure have reached levitation gas bearing needed for, and then control the second compressor 32 shut down.
The present invention is further explained below with reference to embodiment shown in Fig. 1-2.
As shown in Figs. 1-2, in this embodiment, coolant circulating system is multi-connected air conditioner comprising coolant circulating device
With making-up air device 30.
Coolant circulating device includes the outdoor machine system 10 and indoor set system 20 that connection forms refrigerant circulation circuit 1a.Its
In, outdoor machine system 10 includes the first compressor 11, four-way valve 12, outdoor heat exchanger 13, electric expansion valve 14, gas-liquid separator
15 and solenoid valve etc.；Indoor set system then includes an at least indoor unit, indoor unit include indoor heat exchanger 21, indoor fan and
Electric expansion valve 14 etc..First compressor 11 is static pressure type gas suspension centrifugal compressor, is internally provided with gas bearing, the first pressure
The rotor of contracting machine 11 can suspend under the action of gas bearing, reduce abrasion.
Existing air-conditioning system structure can be directly used in coolant circulating device, therefore, no longer fills herein to refrigerant circulation
The more specific structure set is repeated.
Following emphasis is explained making-up air device 30.
The refrigerant circulation that making-up air device 30 is parallel between the outlet of gas-liquid separator 15 and 11 air inlet of the first compressor returns
On the 1a of road, for will be supplied to gas bearing after the gaseous coolant pressurization in gas-liquid separator 15, supplied gas bearing suspends.
As shown in Figure 1, the making-up air device 30 of the embodiment includes the first controlling valve 31, the second compressor 32, refrigerant storage
Device 33 and the second controlling valve 35, wherein the air inlet of the second compressor 32 passes through the first tonifying Qi flow path 3a and gas-liquid separator
The exhaust outlet of 15 outlet connection, the second compressor 32 is connected by the air inlet of the second tonifying Qi flow path 3b and the first compressor 11
It connects, the first controlling valve 31 and the second controlling valve 35 are separately positioned on the first tonifying Qi flow path 3a and the second tonifying Qi flow path 3b, refrigerant
Storage device 33 is also disposed on the second tonifying Qi flow path 3b and between 32 exhaust outlet of the second compressor and the second controlling valve 35.
Second compressor 32 pressurizes for extracting gaseous coolant from gas-liquid separator 15, and to the gaseous coolant extracted
It is delivered in the gas bearing inside the first compressor 11 afterwards.Second compressor 32 can be using more than 1 flow of the first compressor
Small small flow compressor, such as helical-lobe compressor, centrifugal compressor etc..Due to the refrigerant sheet extracted out from gas-liquid separator 15
Body is gaseous coolant, and degree of purity is higher, it is not easy to cause compressor hydraulic compression, and from the refrigerant circulation circuits such as condenser 1a
The refrigerant got of other positions be liquid refrigerants, liquid refrigerants is directly entered compressor, be easy to cause compressor hydraulic compression, damages
Evil compressor, therefore, which extracts refrigerant from gas-liquid separator 15, relative to cold from condenser etc.
The other positions of matchmaker's circulation loop 1a extract the case where refrigerant, and damage is smaller, and functional reliability is higher.
First controlling valve 31 is used to control the on-off of the first tonifying Qi flow path 3a, to control the gaseous state in gas-liquid separator 15
Whether refrigerant flows into the second compressor 32；Second controlling valve 35 is then for controlling the on-off of the second tonifying Qi flow path 3b, to control
Whether the gaseous coolant through the compression of the second compressor 32 is in inflow gas bearing.First controlling valve 31 and/or the second controlling valve 32
It can be using hand-operated valve, motor-driven valve or solenoid valve etc..In this embodiment, both for solenoid valve, in order to realize automatic control
Process processed.
Refrigerant storage device 33 is gas bearing to substitute the second compressor 32 when needed for accumulating refrigerant pressure
Tonifying Qi prevents the second compressor 32 from damaging because of frequent start-stop.As shown in Figure 1, the import of refrigerant storage device 33 and the second pressure
The exhaust outlet of contracting machine 32 is connected to, and the outlet of refrigerant storage device 33 then passes through the second controlling valve 35 and connect with gas bearing.Refrigerant
Storage device 33 can for tank, bucket or other can store the container of gaseous coolant.
Also, as shown in Figure 1, the making-up air device 30 of the embodiment further includes pressure-detecting device 34, pressure detecting dress
34 are set for detecting the pressure inside refrigerant storage device 33, so that the control device of coolant circulating system 100 judges whether to need
The second compressor 32 is controlled to stop working.Pressure-detecting device 34 can use pressure sensor.
Illustrate the worked of the embodiment making-up air device 30 below with reference to the control flow of making-up air device 30 shown in Fig. 2
Journey.
As shown in Fig. 2, then opening the first controlling valve 31 and second after detecting the start command of coolant circulating device
Controlling valve 35, so that the first tonifying Qi flow path 3a and the second tonifying Qi flow path 3b connection, and start the second compressor 32, make the second compression
Machine 32 will be delivered to the gas bearing inside the first compressor 11 after the gaseous coolant pressurization in gas-liquid separator 15；
After the second compressor 32 works T0s, the second compressor 32 has been sent into the gaseous coolant in the first compressor 11
So that gas bearing is suspended, then controls the starting of the first compressor 11 at this time；
After the starting of first compressor 11, the working frequency of the first compressor 11 is monitored, when the work frequency of the first compressor 11
When rate is greater than or equal to F0, show that the first compressor 11 has reached steady-working state, it is cold provided by the first compressor 11
Matchmaker has been enough levitation gas bearing, controls the closing of the second controlling valve 35 at this time, cuts off the second tonifying Qi flow path 3b, so that the second compression
Machine 32 does not continue to provide refrigerant to gas bearing, but the refrigerant after pressurization is stored in refrigerant storage device 33；
The pressure inside refrigerant storage device 33 is detected using pressure-detecting device 34, when pressure-detecting device 34 detects
When pressure inside refrigerant storage device 33 is greater than or equal to P0, show that the refrigerant pressure in refrigerant storage device 33 is outstanding enough
Floating gas bearing controls the closing of the first controlling valve 31 at this time, and shuts down the second compressor 32, so that the second compressor 32 is no longer taken out
The refrigerant in gas-liquid separator 15 is taken, the refrigerant after pressurization is no longer also delivered to refrigerant storage device 33, completes the first compression
Tonifying Qi process during 11 one-shot of machine；
It, then can be first in refrigerant storage device 33 when detecting the start command of the first compressor 11 again next time
Refrigerant carrys out levitation gas bearing, and during this, state is shut down in control the second compressor 32 holding, and controls the second controlling valve 35
It opens, so that refrigerant storage device 33 is exported to the fluid communication between gas bearing, to be stored in refrigerant storage device 33
In interior gas coolant inflow gas bearing.
Above-mentioned control flow can be completed under the control of the control device of coolant circulating system 100, realize full-automatic
Tonifying Qi process, accelerate tonifying Qi efficiency, improve the accuracy of gas supply control.Control device can be by various calculating equipment or calculating
Machine system is realized, software is not limited to, but may be any combination of hardware, firmware or software, hardware and firmware,
Wherein, when using hardware, control device can be the specific hardware device of the compositions such as PLC or integrated circuit.
Above-mentioned control flow be referring to according to the method for the embodiment of the present invention, equipment (system) and computer program product
Flowchart and/or the block diagram describe.It is interpreted as to be realized by computer program instructions in flowchart and/or the block diagram
Each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these meters
Calculation machine program instruction is to the place of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
Device is managed to generate a machine, so that producing by the instruction that computer or the processor of other programmable data processing devices execute
Life is for realizing the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram
Device.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In conclusion coolant circulating system 100 provided by the embodiment, passes through the outdoor machine system 10 in air conditioner loop
On the basis of add making-up air device 30, form new air-conditioning system, can be opened in the first compressor 11 of outdoor machine system 10
Being filled with refrigerant in advance using making-up air device 30 when dynamic makes gas bearing suspend, and realizes the whole operation without abrasion of the first compressor 11
Process improves complete machine operational reliability, reduces machine failure rate.
Also, the second compressor 32 of making-up air device 30 extracts refrigerant from gas-liquid separator 15, can prevent because liquid is cold
Matchmaker is directly entered hydraulic compression caused by compressor, effectively reduces the damage of compressor；Meanwhile refrigerant storage device 33 is set,
Refrigerant after the pressurization of second compressor 32 is stored, and before the first compressor 11 is again started up, by refrigerant storage device
33 the second compressors 32 of substitution are gas bearing tonifying Qi, can effectively reduce the start-stop time of the second compressor 32, extend second
The service life of compressor 32.As it can be seen that 32 functional reliability of the second compressor is higher, and the service life is longer in the embodiment.
As previously mentioned, refrigerant storage device 33 is arranged in the second tonifying Qi flow path 3b in embodiment shown in FIG. 1,
But in other embodiments of the invention, refrigerant storage device 33 can also be parallel on the second tonifying Qi flow path 3b, and it is possible to
Control valve is set on the connecting line of 33 import of refrigerant storage device and the second tonifying Qi flow path 3b, more easily to control second
Refrigerant is stored in refrigerant storage device 33 by compressor 32 again after the first compressor 11 reaches steady-working state.
The foregoing is merely exemplary embodiment of the present invention, are not intended to limit the invention, all in spirit of the invention
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of coolant circulating system (100) characterized by comprising
Coolant circulating device, comprising:
First compressor (11), inside are equipped with gas bearing；With
Gas-liquid separator (15), in the refrigerant circulation circuit (1a) where first compressor (11)；With
Making-up air device (30) makes institute for the gaseous coolant in the gas-liquid separator (15) to be supplied to the gas bearing
State gas bearing suspension.
2. coolant circulating system (100) according to claim 1, which is characterized in that the making-up air device (30) includes the
Two compressors (32), second compressor (32) be parallel to the refrigerant circulation circuit (1a) be located at the gas-liquid separator
(15) on the part between the air inlet of outlet and first compressor (11), wherein second compressor (32)
Air inlet is connect with the outlet of the gas-liquid separator (15) by the first tonifying Qi flow path (3a), and second compressor (32)
Exhaust outlet and the gas bearing connect by the second tonifying Qi flow path (3b).
3. coolant circulating system (100) according to claim 2, which is characterized in that the making-up air device (30) further includes
First controlling valve (31), first controlling valve (31) are arranged on the first tonifying Qi flow path (3a), for controlling described the
The on-off and/or flow of one tonifying Qi flow path (3a)；And/or the making-up air device (30) further includes the second controlling valve (35), it is described
Second controlling valve (35) is arranged on the second tonifying Qi flow path (3b), for controlling the on-off of the second tonifying Qi flow path (3b)
And/or flow.
4. coolant circulating system (100) according to claim 2, which is characterized in that the making-up air device (30) further includes
Refrigerant storage device (33), the import of the refrigerant storage device (33) are connect with the exhaust outlet of second compressor (32),
To store the gaseous coolant being discharged by second compressor (32), and the outlet of the refrigerant storage device (33) and the gas
The connection of body bearing, is supplied to the gas bearing for the gaseous coolant stored.
5. coolant circulating system (100) according to claim 4, which is characterized in that the refrigerant storage device (33) sets
It is placed in the second tonifying Qi flow path (3b), alternatively, the refrigerant storage device (33) and the second tonifying Qi flow path (3b) are simultaneously
Connection.
6. coolant circulating system (100) according to claim 5, which is characterized in that the refrigerant storage device (33) sets
It is placed in the second tonifying Qi flow path (3b), and the exhaust outlet for being located at second compressor (32) and setting are in second benefit
On air-flow road (3b) and for control the second tonifying Qi flow path (3b) on-off and/or flow the second controlling valve (35) it
Between.
7. coolant circulating system (100) according to claim 4, which is characterized in that the making-up air device (30) further includes
Pressure-detecting device (34), the pressure-detecting device (34) are used to detect the internal pressure of the refrigerant storage device (33).
8. a kind of multi-connected air conditioner, which is characterized in that including coolant circulating system as claimed in claim 1 to 7 (100).
9. a kind of control method of coolant circulating system as claimed in claim 1 (100), which is characterized in that including
Following steps:
Before the first compressor (11) steady operation, the making-up air device (30) is controlled by the gas-liquid separator (15)
Interior gaseous coolant is supplied to the gas bearing.
10. control method according to claim 9, which is characterized in that control making-up air device (30) for gas-liquid separator
(15) gaseous coolant in is supplied to gas bearing
The second compressor (32) starting of the making-up air device (30) is controlled, and controls connection the second compressor (32) air inlet
Mouthful with the gas-liquid separator (15) export the first tonifying Qi flow path (3a) and connect the second compressor (32) exhaust outlet
It is connected to the second tonifying Qi flow path (3b) of the gas bearing, so that the making-up air device (30) is by the gas-liquid separator (15)
Interior gaseous coolant is supplied to the gas bearing.
11. control method according to claim 9, which is characterized in that controlling making-up air device (30) for gas-liquid separator
(15) during the gaseous coolant in is supplied to gas bearing, the control method further include:
After the gaseous coolant provided by the making-up air device (30) makes the gas bearing suspend, first compression is controlled
Machine (11) starting.
12. control method according to claim 11, which is characterized in that when the making-up air device (30) work preset time
When T0s, judge that gaseous coolant provided by the making-up air device (30) has made the gas bearing suspend.
13. control method according to claim 11, which is characterized in that the control method is further comprising the steps of:
When the running frequency of first compressor (11) is greater than or equal to predeterminated frequency F0, the making-up air device (30) are controlled
It does not continue to provide gaseous coolant for the gas bearing.
14. control method according to claim 13, which is characterized in that control making-up air device (30) does not continue to as gas
Bearing provides gaseous coolant
The the second tonifying Qi flow path (3b) for controlling the making-up air device (30) disconnects, and is not continued to controlling the making-up air device (30)
Gaseous coolant is provided for the gas bearing.
15. control method according to claim 13, which is characterized in that the control method is further comprising the steps of:
When controlling the second tonifying Qi flow path (3b) and disconnecting, also control the second compressor (32) of the making-up air device (30) after
Continuous work simultaneously provides gaseous coolant to the refrigerant storage device (33) of the making-up air device (30).
16. control method according to claim 15, which is characterized in that the control method is further comprising the steps of:
When the pressure in the refrigerant storage device (33) is greater than or equal to preset pressure P0, second compressor is controlled
(32) it shuts down.
17. control method according to claim 16, which is characterized in that the control method is further comprising the steps of:
When the pressure in the refrigerant storage device (33) is greater than or equal to preset pressure P0 and detects first pressure again
It when the start command of contracting machine (11), controls second compressor (32) and keeps shutting down state, and control the refrigerant storage dress
The fluid communication that (33) are exported between the gas bearing is set, the gaseous coolant for storing the refrigerant storage device (33)
It flows into the gas bearing.
18. a kind of device characterized by comprising
Storage unit；With
It is coupled to the processing unit of the storage unit, the processing unit is configured as based on being stored in the storage unit
Any control method of instruction execution such as claim 9-17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111072.6A CN109668354B (en) | 2019-02-12 | 2019-02-12 | Refrigerant circulation system for preventing abrasion of gas bearing for compressor and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111072.6A CN109668354B (en) | 2019-02-12 | 2019-02-12 | Refrigerant circulation system for preventing abrasion of gas bearing for compressor and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109668354A true CN109668354A (en) | 2019-04-23 |
| CN109668354B CN109668354B (en) | 2023-07-25 |
Family
ID=66151974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910111072.6A Active CN109668354B (en) | 2019-02-12 | 2019-02-12 | Refrigerant circulation system for preventing abrasion of gas bearing for compressor and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109668354B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090528A (en) * | 2020-01-09 | 2021-07-09 | 珠海格力电器股份有限公司 | Compressor, bearing wear degree detection method and air conditioning system |
| CN114198923A (en) * | 2021-11-22 | 2022-03-18 | 青岛海尔空调电子有限公司 | Air supply system of compressor |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313073A (en) * | 1995-05-16 | 1996-11-29 | Mitsubishi Heavy Ind Ltd | Refrigerating apparatus |
| JPH10141267A (en) * | 1996-11-08 | 1998-05-26 | Daikin Ind Ltd | Rotary compressor |
| JP2004100608A (en) * | 2002-09-11 | 2004-04-02 | Hitachi Home & Life Solutions Inc | Compressor |
| JP2005345083A (en) * | 2004-06-04 | 2005-12-15 | Shigeto Matsuo | Liquid-side energy recovering system of refrigeration air conditioner |
| WO2009090348A1 (en) * | 2007-10-25 | 2009-07-23 | Airtechnolgies | Gas compression apparatus |
| CN104145167A (en) * | 2011-12-21 | 2014-11-12 | 维纳斯***公司 | Centrifugal refrigerant vapour compressors |
| CN104697233A (en) * | 2015-02-10 | 2015-06-10 | 珠海格力电器股份有限公司 | Refrigerating system and operation method for preventing wet compression of compressor of refrigerating system |
| CN105466056A (en) * | 2015-12-21 | 2016-04-06 | 重庆美的通用制冷设备有限公司 | Water chilling unit |
| CN205154536U (en) * | 2015-11-19 | 2016-04-13 | 沈阳工业大学 | Drum type magnetic suspension permanent magnetism straight line compressor |
| JP2017025822A (en) * | 2015-07-23 | 2017-02-02 | 株式会社豊田自動織機 | Centrifugal compressor |
| CN107588005A (en) * | 2017-09-06 | 2018-01-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, compressor parallel system and multi-connected machine heat-exchange system |
| US20180045224A1 (en) * | 2015-03-06 | 2018-02-15 | Thermodyn Sas | Liquid / gas separator and centrifugal motor compressor unit equipped with such a separator |
| CN108533510A (en) * | 2018-05-18 | 2018-09-14 | 潍坊富源增压器有限公司 | Fuel cell air suspension centrifugal compressor |
| CN209763554U (en) * | 2019-02-12 | 2019-12-10 | 珠海格力电器股份有限公司 | Refrigerant circulation system and multi-connected air conditioner |
-
2019
- 2019-02-12 CN CN201910111072.6A patent/CN109668354B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313073A (en) * | 1995-05-16 | 1996-11-29 | Mitsubishi Heavy Ind Ltd | Refrigerating apparatus |
| JPH10141267A (en) * | 1996-11-08 | 1998-05-26 | Daikin Ind Ltd | Rotary compressor |
| JP2004100608A (en) * | 2002-09-11 | 2004-04-02 | Hitachi Home & Life Solutions Inc | Compressor |
| JP2005345083A (en) * | 2004-06-04 | 2005-12-15 | Shigeto Matsuo | Liquid-side energy recovering system of refrigeration air conditioner |
| WO2009090348A1 (en) * | 2007-10-25 | 2009-07-23 | Airtechnolgies | Gas compression apparatus |
| US20140341710A1 (en) * | 2011-12-21 | 2014-11-20 | Venus Systems Limited | Centrifugal refrigerant vapour compressors |
| CN104145167A (en) * | 2011-12-21 | 2014-11-12 | 维纳斯***公司 | Centrifugal refrigerant vapour compressors |
| CN104697233A (en) * | 2015-02-10 | 2015-06-10 | 珠海格力电器股份有限公司 | Refrigerating system and operation method for preventing wet compression of compressor of refrigerating system |
| US20180045224A1 (en) * | 2015-03-06 | 2018-02-15 | Thermodyn Sas | Liquid / gas separator and centrifugal motor compressor unit equipped with such a separator |
| JP2017025822A (en) * | 2015-07-23 | 2017-02-02 | 株式会社豊田自動織機 | Centrifugal compressor |
| CN205154536U (en) * | 2015-11-19 | 2016-04-13 | 沈阳工业大学 | Drum type magnetic suspension permanent magnetism straight line compressor |
| CN105466056A (en) * | 2015-12-21 | 2016-04-06 | 重庆美的通用制冷设备有限公司 | Water chilling unit |
| CN107588005A (en) * | 2017-09-06 | 2018-01-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, compressor parallel system and multi-connected machine heat-exchange system |
| CN108533510A (en) * | 2018-05-18 | 2018-09-14 | 潍坊富源增压器有限公司 | Fuel cell air suspension centrifugal compressor |
| CN209763554U (en) * | 2019-02-12 | 2019-12-10 | 珠海格力电器股份有限公司 | Refrigerant circulation system and multi-connected air conditioner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090528A (en) * | 2020-01-09 | 2021-07-09 | 珠海格力电器股份有限公司 | Compressor, bearing wear degree detection method and air conditioning system |
| CN113090528B (en) * | 2020-01-09 | 2021-12-03 | 珠海格力电器股份有限公司 | Compressor, bearing wear degree detection method and air conditioning system |
| CN114198923A (en) * | 2021-11-22 | 2022-03-18 | 青岛海尔空调电子有限公司 | Air supply system of compressor |
| CN114198923B (en) * | 2021-11-22 | 2023-10-20 | 青岛海尔空调电子有限公司 | Air supply system of compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109668354B (en) | 2023-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212431402U (en) | Motor cooling system and refrigerating system of air suspension compressor | |
| CN107735575B (en) | Capacity control system and method for multistage centrifugal compressor | |
| CN101749890B (en) | Refrigeration apparatus and method for controlling the same | |
| JP4013261B2 (en) | Refrigeration equipment | |
| EP2264379A1 (en) | Air conditioner | |
| CN105899891B (en) | The centrifugal heat pump of steam turbine driving | |
| CN105299979A (en) | Oil-returning control method and oil-returning device for compressor as well as air conditioner | |
| EP3399254B1 (en) | Air conditioner having a compressor oil storage assembly and control method therefor | |
| CN110608501B (en) | Oil return control method for air conditioner and air conditioner | |
| CN109668354A (en) | The coolant circulating system and its control method that anti-compressor gas bearing is worn | |
| CN103791588A (en) | Control method for solving problem of shortage of refrigerants of multi-link air conditioning unit | |
| CN106440572A (en) | Oil balancing and returning air conditioning unit and control method thereof | |
| JP2010139155A (en) | Refrigeration apparatus | |
| CN110360709B (en) | Multi-split air conditioning system and control method thereof | |
| CN107228507A (en) | Compressor oil-control system, oil control method and the air conditioner with the system | |
| CN106196517A (en) | Multi-split air conditioner control method, device and multi-split air conditioner | |
| CN209763554U (en) | Refrigerant circulation system and multi-connected air conditioner | |
| CN103079854B (en) | The update method of air conditioner for motor vehicle, air conditioner for motor vehicle | |
| JP4575184B2 (en) | Air conditioner | |
| CN106679239A (en) | Compressor oil and liquid return control method and device and air conditioner system | |
| JP3819546B2 (en) | Air conditioner | |
| CN113503620A (en) | Air conditioning system control method and device, storage medium and air conditioning system | |
| CN111023484B (en) | Automatic control method for refrigerant quantity in heating mode | |
| EP3604972B1 (en) | Hybrid chiller system | |
| JPH085169A (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |