CN107763868A - A kind of Condensing units with oil cooler - Google Patents
A kind of Condensing units with oil cooler Download PDFInfo
- Publication number
- CN107763868A CN107763868A CN201711286082.0A CN201711286082A CN107763868A CN 107763868 A CN107763868 A CN 107763868A CN 201711286082 A CN201711286082 A CN 201711286082A CN 107763868 A CN107763868 A CN 107763868A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil cooler
- condenser
- inlet
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/006—Cooling of compressor or motor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A kind of Condensing units with oil cooler, including compressor, oil eliminator, condenser, first pipeline and oil cooler, the gas feed of the exhaust outlet and oil eliminator of compressor connects, the gas vent of oil eliminator and the air inlet of condenser connect, condenser is located at the top of oil cooler, condenser passes through the first pipeline connection with oil cooler, the end of oil cooler is respectively equipped with freezing oil inlet and freezing oil export, the freezing oil inlet of oil cooler and the oil-out of oil eliminator connect, the freezing oil export of oil cooler and the oil return opening of compressor connect.Condensing units use three device integrated devices and economizer, improve refrigerating capacity of the unit under worst cold case, ensure the economy of unit.Full-liquid type oil cooler good effect of heat exchange, oil temperature fluctuation is small, and scale problems are not present inside heat exchanger, using water wisely, does not increase excess power, is advantageous to set steady, Effec-tive Function, Condensing units more compact structure.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, more particularly to a kind of Condensing units with oil cooler.
Background technology
At present, unit is condensed using the screw compression of water-cooled condenser, the type of cooling of refrigeration oil is typically the shape of water cooling
Formula.Not only need to increase cooling water inflow and pump power using water cooling mode, and extra deployment tube is wanted in compressor set
Road, influence unit integral layout；Also, water cooling is used, oil temperature fluctuation is big, and easily fouling is, it is necessary to often inside oil cooler
Cleaning, is unfavorable for that unit is long-term, stable operation.In addition, when existing Condensing units are run under worst cold case, it freezes
Amount can reduce, so as to cause the economy of unit to be deteriorated.Accordingly, it is desirable to provide a kind of realistic plan solves above-mentioned ask
Topic.
The content of the invention
The technical problems to be solved by the invention are：A kind of band oil cooler of refrigeration oil in effectively cooling unit is provided
Condensing units.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of Condensing units with oil cooler, including compressor, oil eliminator, condenser, the first pipeline and
Oil cooler, the gas feed of the exhaust outlet and oil eliminator of the compressor connect, the gas vent of the oil eliminator
It is connected with the air inlet of condenser, the condenser is located at the top of oil cooler, and the condenser leads to oil cooler
The first pipeline connection is crossed, the end of the oil cooler is respectively equipped with freezing oil inlet and freezing oil export, and the oil cooling is but
The freezing oil inlet of device and the oil-out of oil eliminator connect, the freezing oil export of the oil cooler and returning for compressor
Hydraulic fluid port connects.
The beneficial effects of the present invention are：Oil cooler is located at the lower section of condenser, by the use of gravity by refrigerant as cold
But medium replaces water cooling, and whole cooling procedure good effect of heat exchange, oil fluctuation is small, because cooling medium is refrigerant, therefore oil cooling is but
Scale problems are not present inside device；Using water wisely simultaneously, it is not necessary to increase excess power, be advantageous to set steady, efficiently fortune
OK, whole unit is easy for installation also without arranging extra water cooling pipeline, so that Condensing units structure is more stepped up
Gather.
Brief description of the drawings
Fig. 1 is the structural representation of the Condensing units with oil cooler of the embodiment of the present invention.
Label declaration：
1st, compressor；
2nd, oil eliminator；
3rd, condenser；31st, cooling water inlet；32nd, coolant outlet；33rd, first interface；
4th, the first pipeline；
5th, oil cooler；51st, oil inlet is freezed；52nd, oil export is freezed；53rd, second interface；
6th, three device integrated device；
7th, economizer；71st, the first liquid-inlet；72nd, second liquid import；73rd, first gas exports；74th, second liquid
Outlet.
Embodiment
To describe the technology contents of the present invention, the objects and the effects in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
Refrigeration system end of the present invention includes the equipment such as evaporator, all kinds of valves and pipeline, and one of its effect is
It is transported to after the liquid refrigerant that condenser transmission comes is switched into gaseous refrigerant in compressor.
The design of most critical of the present invention is：Oil cooler be located at condenser lower section, by the use of gravity by refrigerant as
Cooling medium replaces the mode of water cooling, and heat transfer effect is more preferable, and set structure is more compact.
It refer to Fig. 1, a kind of Condensing units with oil cooler, including compressor 1, oil eliminator 2, condenser
3rd, the first pipeline 4 and oil cooler 5, the exhaust outlet of the compressor 1 are connected with the gas feed of oil eliminator 2, the oil
The gas vent of separator 2 is connected with the air inlet of condenser 3, and the condenser 3 is located at the top of oil cooler 5, described
Condenser 3 is connected with oil cooler 5 by the first pipeline 4, and the end of the oil cooler 5 is respectively equipped with freezing oil inlet
51 are connected with freezing oil export 52, the freezing oil inlet 51 of the oil cooler 5 with the oil-out of oil eliminator 2, the oil
The freezing oil export 52 of cooling device 5 is connected with the oil return opening of compressor 1.
The present invention operation principle be：Condenser be arranged on oil cooler above (present invention with Condensing units just
It is upper to the top-direction for the condenser being positioned over when on ground, using the bottom direction of condenser under), the two passes through the first pipe
Road connects, and liquid refrigerants flows under the influence of gravity into oil cooler and refrigeration oil is cooled in condenser, and liquid refrigerants absorbs heat
Temperature is raised after amount, and density diminishes, and constantly rises, and condenser, while the production to cool again within the condenser are returned along pipeline
Liquid refrigerants constantly inject in oil cooler, so as between condenser and oil cooler formed circulation, to refrigeration oil
Cooled down.
It was found from foregoing description, the beneficial effects of the present invention are：Condenser is arranged on above oil cooler, and the two is logical
Cross the first pipeline connection, liquid refrigerants flows under the influence of gravity into oil cooler and refrigeration oil is cooled in condenser, and liquid is cold
Temperature is raised after matchmaker absorbs heat, and density diminishes, and constantly rises, and condenser is returned along pipeline, while continuous in frozen state refrigerant
Inject in oil cooler, so as to form circulation between condenser and oil cooler, refrigeration oil is cooled down.It is whole cold
But process good effect of heat exchange, oil fluctuation is small, because cooling medium is refrigerant, therefore scale problems is not present inside oil cooler；
Using water wisely simultaneously, it is not necessary to increase excess power, be advantageous to set steady, Effec-tive Function, whole unit is also without arrangement
Extra water cooling pipeline, it is easy for installation, so that Condensing units structure is compacter.
Further, in addition to three device integrated devices 6, the inlet of the three devices integrated device 6 connect with the liquid outlet of condenser 3
Connect, the gas feed of the three devices integrated device 6 is connected with refrigeration system end, the gas vent and pressure of the three devices integrated device 6
The air inlet of contracting machine 1 is connected.
Seen from the above description, the liquid being mingled with for the gaseous refrigerant sent from refrigeration system end is in three device integrated devices
Resided on after being separated in 6 in three device integrated devices 6, therefore, three device integrated devices had both served the effect of gas-liquid separator, played again
The function of reservoir, the gaseous refrigerant by separation is transported in compressor 1 by three device integrated devices 6, variable through overcompression
For the gaseous refrigerant of HTHP, used for next working cycles.
Further, in addition to economizer 7, it is respectively equipped with the first liquid-inlet 71 on the economizer 7, second liquid enters
Mouth 72, first gas outlet 73 and second liquid outlet 74, first liquid-inlet 71 connect with first gas outlet 73, institute
State second liquid import 72 to connect with second liquid outlet 74, the liquid outlet of the three devices integrated device 6 enters with the first liquid respectively
Mouth 71 is connected with second liquid import 72, and the first gas outlet 73 is connected with the gas supplementing opening on compressor 1, second liquid
Body outlet 74 is connected with refrigeration system end.
Seen from the above description, the liquid refrigerant discharged from condenser 3, flow into three device integrated devices 6 and carry out first
Preliminary to be subcooled, now three device integrated devices 6 play a part of heat exchanger again；It can be seen that three device integrated devices 6 are met by an equipment
The function of three equipment, has saved cost so that the structure of Condensing units is compacter.
The liquid direction that goes out of the liquid outlet of three device integrated devices 6 is divided into two, one with the phase of the first liquid-inlet 71 of economizer 7
Even, the second liquid import 73 of another economizer 7 is connected, and flows into the liquid refrigerant of second liquid import 74 through throttling and evaporation
Gaseous refrigerant is expanded to, this part is changed into another part liquid of the gaseous refrigerant to the first liquid-inlet 71 of inflow from liquid
State refrigerant plays a part of supercooling.Therefore, from the first liquid-inlet 71 pass into it is cold after flow out from the first liquid outlet 72
Liquid refrigerant flow to refrigeration system end, be evaporated refrigeration, by the liquid refrigerant of supercooling, there is bigger refrigeration
Amount.And export gas supplementing opening of the gaseous refrigerant of 74 outflows directly with compressor 1 from second gas and be connected, this tonifying Qi cycle down
The low delivery temperature of compressor 1, improves refrigerating capacity so that when compressor 1 is run under worst cold case, also there is larger system
Cold.
Further, the oil cooler 5 is shell-and-tube heat exchanger, it is described enter oil cooler 5 freezing oil inlet
51 are respectively communicated with the heat exchanger tube in oil cooler 5 with freezing oil export 52, and the top of the oil cooler 5 connects provided with first
Mouth 33, the inner chamber of first pipeline of the connection of first interface 33 4 and oil cooler 5.
Seen from the above description, refrigerant enters in oil cooler 5, the whole housing full of oil cooler 5, heat exchanging
Refrigeration oil in pipe is cooled down, and cooling effect is more preferable.
Further, the condenser 3 is water-cooled condenser, and the end of the condenser 3 is respectively equipped with cooling water inlet
31 and coolant outlet 32, the bottom of the condenser 3 is provided with second interface 53, and the second interface 53 connects the first pipeline 4
With the inner chamber of condenser 3.
Seen from the above description, seen from the above description, water-cooled condenser effect is good, and securely and reliably.
Further, the compressor 1 is semi-hermetic screw compressor, and the number of the compressor 1 is at least one.
Seen from the above description, the number of compressor 1 more increases to meet various refrigeration demands.
Further, the economizer 7 is plate type heat exchanger.
Fig. 1 is refer to, embodiments of the invention one are：
A kind of Condensing units with oil cooler, including compressor 1, oil eliminator 2, condenser 3, the first pipeline
4th, oil cooler 5, three device integrated devices 6 and economizer 7, the compressor 1 are semi-hermetic screw compressor, the compressor 1
Number to be at least one, the economizer 7 is plate type heat exchanger.
The condenser 3 is water-cooled condenser 3, and the end of the condenser 3 is respectively equipped with cooling water inlet 31 and cooling
Water out 32, the bottom of the condenser 3 are provided with second interface 53, and the second interface 53 connects the first pipeline 4 and condenser 3
Inner chamber.
The oil cooler 5 is shell-and-tube heat exchanger, it is described enter oil cooler 5 freezing oil inlet 51 and refrigeration oil
Outlet 52 is respectively communicated with the heat exchanger tube in oil cooler 5, and the top of the oil cooler 5 is provided with first interface 33, described
The inner chamber of first pipeline of the connection of first interface 33 4 and oil cooler 5.
The exhaust outlet of the compressor 1 is connected with the gas feed of oil eliminator 2, the gas vent of the oil eliminator 2
It is connected with the air inlet of condenser 3, the condenser 3 is located at the top of oil cooler 5, and the condenser 3 but fills with oil cooling
5 to be put to connect by the first pipeline 4, the end of the oil cooler 5 is respectively equipped with freezing oil inlet 51 and freezing oil export 52,
The freezing oil inlet 51 of the oil cooler 5 is connected with the oil-out of oil eliminator 2, the refrigeration oil of the oil cooler 5
Outlet 52 is connected with the oil return opening of compressor 1.
The inlet of the three devices integrated device 6 is connected with the liquid outlet of condenser 3, and the gas of the three devices integrated device 6 enters
Mouth is connected with refrigeration system end, and the gas vent of the three devices integrated device 6 is connected with the air inlet of compressor 1, three device
The liquid outlet of integrated device 6 is connected with the first liquid-inlet 71 with second liquid import 72 respectively.
The first liquid-inlet 71, second liquid import 72, first gas outlet 73 and the are respectively equipped with the economizer 7
Two liquid outlets 74, first liquid-inlet 71 connect with first gas outlet 73, the second liquid import 72 and second
Liquid outlet 74 is connected, and first gas outlet 73 be connected with the gas supplementing opening on compressor 1, the second liquid export 74 and
Refrigeration system end connects.
In summary, the invention provides a kind of compression condensation with oil cooler of refrigeration oil in effectively cooling unit
Unit.The Condensing units employ three device integrated devices and economizer, further improve system of the unit under worst cold case
Cold, it ensure that the economy of unit.In addition, the full-liquid type oil cooler good effect of heat exchange, oil temperature fluctuates small, heat exchanger
Scale problems, using water wisely is not present in inside, it is not necessary to increases excess power, is advantageous to set steady, Effec-tive Function, Er Qiebu
It is simple to put form, it is easy for installation, so that Condensing units structure is compacter.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (7)
1. a kind of Condensing units with oil cooler, including compressor, oil eliminator, condenser, the first pipeline and oil
Cooling device, it is characterised in that the gas feed of the exhaust outlet and oil eliminator of the compressor connects, the oil eliminator
The air inlet of gas vent and condenser connects, and the condenser is located at the top of oil cooler, the condenser and oil cooling
But device is respectively equipped with freezing oil inlet and freezing oil export, institute by the first pipeline connection, the end of the oil cooler
The oil-out of the freezing oil inlet and oil eliminator of stating oil cooler connects, freezing oil export and the pressure of the oil cooler
The oil return opening connection of contracting machine.
2. the Condensing units according to claim 1 with oil cooler, it is characterised in that also including three devices one
Device, the inlet of the three devices integrated device and the liquid outlet of condenser connect, the gas feed of the three devices integrated device and refrigeration
System end connects, and the gas vent of the three devices integrated device is connected with the air inlet of compressor.
3. the Condensing units according to claim 2 with oil cooler, it is characterised in that also including economizer,
The first liquid-inlet, second liquid import, first gas outlet and second liquid outlet are respectively equipped with the economizer, it is described
First liquid-inlet and first gas outlet, the second liquid import and second liquid outlet, three device one
The liquid outlet of body device is connected with the first liquid-inlet with second liquid import respectively, in the first gas outlet and compressor
Gas supplementing opening is connected, and the second liquid outlet is connected with refrigeration system end.
4. the Condensing units according to claim 1 with oil cooler, it is characterised in that the oil cooler
For shell-and-tube heat exchanger, it is described enter oil cooler freezing oil inlet be respectively communicated with freezing oil export in oil cooler
Heat exchanger tube, the top of the oil cooler are provided with first interface, and the first interface connects the first pipeline and oil cooler
Inner chamber.
5. the Condensing units according to claim 4 with oil cooler, it is characterised in that the condenser is water
Cool condenser, the end of the condenser are respectively equipped with cooling water inlet and coolant outlet, and the bottom of the condenser is provided with
Second interface, the second interface connect the inner chamber of the first pipeline and condenser.
6. the Condensing units with oil cooler according to claim 1-5, it is characterised in that the compressor is
Semi-hermetic screw compressor, the number of the compressor is at least one.
7. according to the Condensing units with oil cooler described in claim 3-6 any one, it is characterised in that described
Economizer is plate type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286082.0A CN107763868A (en) | 2017-12-07 | 2017-12-07 | A kind of Condensing units with oil cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286082.0A CN107763868A (en) | 2017-12-07 | 2017-12-07 | A kind of Condensing units with oil cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107763868A true CN107763868A (en) | 2018-03-06 |
Family
ID=61277394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711286082.0A Pending CN107763868A (en) | 2017-12-07 | 2017-12-07 | A kind of Condensing units with oil cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763868A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917223A (en) * | 2018-08-30 | 2018-11-30 | 珠海格力电器股份有限公司 | Heat pump air-cooled screw unit |
| CN111023637A (en) * | 2018-10-09 | 2020-04-17 | 山东新华能节能科技有限公司 | Gas-liquid separation system with oil cooling function |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419155A (en) * | 1993-03-31 | 1995-05-30 | American Standard Inc. | Cooling of compressor lubricant in a refrigeration system condenser |
| CN2781296Y (en) * | 2005-03-27 | 2006-05-17 | 烟台欧森纳地源空调有限公司 | Three-in-one refrigeration device |
| CN101782289A (en) * | 2010-01-29 | 2010-07-21 | 武汉新世界制冷工业有限公司 | High-efficiency screw-type auto-cascading refrigeration system |
| CN202149640U (en) * | 2011-06-24 | 2012-02-22 | 大连三洋压缩机有限公司 | Thermosiphon oil cooling system for screw compressor |
| CN204254921U (en) * | 2014-09-22 | 2015-04-08 | 广东申菱空调设备有限公司 | The low-temperature cold water unit structure of single machine two-stage |
| CN105202830A (en) * | 2015-09-21 | 2015-12-30 | 天津市法斯克制冷设备有限公司 | Three-device integrated device |
| CN107289691A (en) * | 2016-03-31 | 2017-10-24 | 浙江三花智能控制股份有限公司 | Gas-liquid separator |
| CN207797440U (en) * | 2017-12-07 | 2018-08-31 | 福建雪人股份有限公司 | A kind of Condensing units with oil cooler |
-
2017
- 2017-12-07 CN CN201711286082.0A patent/CN107763868A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419155A (en) * | 1993-03-31 | 1995-05-30 | American Standard Inc. | Cooling of compressor lubricant in a refrigeration system condenser |
| CN2781296Y (en) * | 2005-03-27 | 2006-05-17 | 烟台欧森纳地源空调有限公司 | Three-in-one refrigeration device |
| CN101782289A (en) * | 2010-01-29 | 2010-07-21 | 武汉新世界制冷工业有限公司 | High-efficiency screw-type auto-cascading refrigeration system |
| CN202149640U (en) * | 2011-06-24 | 2012-02-22 | 大连三洋压缩机有限公司 | Thermosiphon oil cooling system for screw compressor |
| CN204254921U (en) * | 2014-09-22 | 2015-04-08 | 广东申菱空调设备有限公司 | The low-temperature cold water unit structure of single machine two-stage |
| CN105202830A (en) * | 2015-09-21 | 2015-12-30 | 天津市法斯克制冷设备有限公司 | Three-device integrated device |
| CN107289691A (en) * | 2016-03-31 | 2017-10-24 | 浙江三花智能控制股份有限公司 | Gas-liquid separator |
| CN207797440U (en) * | 2017-12-07 | 2018-08-31 | 福建雪人股份有限公司 | A kind of Condensing units with oil cooler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917223A (en) * | 2018-08-30 | 2018-11-30 | 珠海格力电器股份有限公司 | Heat pump air-cooled screw unit |
| CN111023637A (en) * | 2018-10-09 | 2020-04-17 | 山东新华能节能科技有限公司 | Gas-liquid separation system with oil cooling function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203375758U (en) | Refrigerating cycle system | |
| CN104864621B (en) | A kind of four-pipe system Dual-evaporator refrigeration system | |
| CN207797440U (en) | A kind of Condensing units with oil cooler | |
| CN103307815B (en) | Flash evaporator for compressor and cooling system comprising same | |
| CN201096430Y (en) | Integrated shell tube type heat-exchanger rig | |
| CN109506383A (en) | The direct condensation by contact cooling cycle system of three-level overlapping | |
| CN202692546U (en) | Falling film type evaporator for refrigeration loop | |
| CN107763868A (en) | A kind of Condensing units with oil cooler | |
| CN208832629U (en) | A kind of low-temperature cold water unit | |
| KR20120041186A (en) | Evaporator and refrigerator that have oil separation mechanism by heat exchanging plates | |
| CN202328928U (en) | Flooded shell and tube evaporator | |
| CN104697232B (en) | Heat pump | |
| CN208751090U (en) | Using the refrigeration system of thermal siphon oil return | |
| CN101701757A (en) | Shell-tube evaporator | |
| CN208720580U (en) | A kind of finned evaporator and air screw source heat pump system | |
| CN106052222A (en) | Large-medium dual throttle refrigeration water unit achieving water cooling type oil cooling | |
| CN206905332U (en) | Hydrocone type water cooling Brine machine groups system | |
| CN107339839A (en) | A kind of novel energy-conserving moves ice machine | |
| CN206399023U (en) | A kind of water chiller with gas-liquid separator | |
| CN206281235U (en) | A kind of Water cooling low temperature Parallel sets | |
| CN110206708A (en) | One kind being used for oil cooler and compressor link circuit | |
| CN110542247A (en) | Shell and tube condenser and air conditioning system | |
| CN202928181U (en) | A novel water-cooling compressor condensing unit | |
| CN205403005U (en) | Refrigerating unit and ice cold -storage system | |
| CN205655527U (en) | Use carbon dioxide heat pump system of hydraulic filling formula stock solution evaporimeter |
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 |