CN1159546A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN1159546A CN1159546A CN96104487A CN96104487A CN1159546A CN 1159546 A CN1159546 A CN 1159546A CN 96104487 A CN96104487 A CN 96104487A CN 96104487 A CN96104487 A CN 96104487A CN 1159546 A CN1159546 A CN 1159546A
- Authority
- CN
- China
- Prior art keywords
- pipe
- open
- mentioned
- close valve
- air
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/50—Load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a cheap air conditioner applicable for both low load and high load, which is provided with a first bypass pipe that makes partial refrigerants for hollow circulation, simultaneously the first bypass pipe is arranged with a first opening-closing valve and a first capillary pipe, and the invention is also provided with a second bypass pipe that makes partial refrigerants be guided into the suction side of compressor, simultaneously a second opening-closing valve and a second capillary pipe are arranged at the second bypass pipe, when the load of air conditioner and outdoor air load are large, the first opening-closing valve is opened so as to prevent the refrigerant from rising, when the load of the air conditioner is small, the second opening-closing valve is opened, the partial refrigerants are guided into the suction side of compressor, therefore the invention can adjust the circulation amount of refrigerants.
Description
The present invention relates to have the air regulator of the so-called multi-model air-conditioner of many indoor heat converters.
The example of indoor cooling air-conditioner has for example special air-conditioner of putting down in writing in the clear 50-34343 communique of opening.This air-conditioner has compressor, outdoor heat converter, decompressor and indoor heat converter is coupled together the cooling cycle system that constitutes with refrigerant tubing.
Have many (for example 2) indoor heat converter in parallel in above-mentioned air-conditioner, this air-conditioner is called the multi-model air-conditioner.In this air-conditioner, when (low load) or 2 utilized when only utilizing 1 indoor heat converter, therefore the internal circulating load difference of cold-producing medium must have the structure of control circulating mass of refrigerant, for example hold-up tank must be installed.In addition, when outside air temperature was high, if can not be corresponding with the big situation of load, the protective device of air-conditioner will move, and the running of air-conditioner might Halfway Stopping., in order to make low price, when using the compressor with certain speed drive,, be difficult to constitute and above-mentioned low load and the corresponding structure of high capacity owing to can not control the actuating speed of compressor.
The present invention is exactly the air-conditioner that a kind of cheapness that can be corresponding with high capacity and low load will be provided.
In order to solve above-mentioned problem, the air-conditioner of first aspect of the present invention is will be with the compressor of certain speed running with refrigerant pipe, outdoor heat converter, decompressor, and many indoor heat converters that are arranged in parallel couple together, in this air-conditioner, connect the pipe of above-mentioned outdoor heat converter outlet side and the pipe of above-mentioned compressor suction side with the 1st bypass pipe, the 1st open and close valve and the 1st pressure reducer are set on the 1st bypass pipe simultaneously, the pipe that connects the suction side of the pipe of discharge side of above-mentioned compressor and compressor with the 2nd bypass pipe, the 2nd open and close valve and the 2nd pressure reducer are set on the 2nd bypass pipe simultaneously, also have control device, it is controlled in this wise, promptly when air-conditioning load and outdoor air load are big, above-mentioned the 1st open and close valve is opened, simultaneously the 2nd open and close valve is closed, when air-conditioning load hour, above-mentioned the 1st open and close valve is closed, simultaneously the 2nd open and close valve is opened.
Second aspect of the present invention is with the 1st, the 2nd decompressor in the 1st, the 2nd capillary formation first aspect present invention.
The air-conditioner of the 3rd aspect of the present invention is will be with the compressor of certain speed running with refrigerant tubing, outdoor heat converter, decompressor, and many indoor heat converters of configuration in parallel couple together, have and make cold-producing medium stop to flow into each transfer valve that each heat exchanger is used, and the outside air temperature detector that detects outside air temperature, in this air-conditioner, the pipe that connects the suction side of the pipe of above-mentioned outdoor heat converter outlet side and above-mentioned compressor with the 1st bypass pipe, the 1st open and close valve and the 1st pressure reducer are set on the 1st bypass pipe simultaneously, the pipe that connects the suction side of the pipe of discharge side of above-mentioned compressor and compressor with the 2nd bypass pipe, the 2nd open and close valve and the 2nd pressure reducer are set on the 2nd bypass pipe simultaneously, also have control device, it is controlled in this wise, promptly working as above-mentioned transfer valve all is opened, and the detected temperatures of above-mentioned outside air temperature detector is when higher than set point of temperature, above-mentioned the 1st open and close valve is opened, above-mentioned the 2nd open and close valve is closed, if when in the above-mentioned control valve control valve of closing being arranged, above-mentioned the 1st open and close valve is closed, simultaneously above-mentioned the 2nd open and close valve is opened.
If adopt first and second aspects of the present invention, when air-conditioning load and air load are big, the 1st open and close valve is opened, liquid refrigerant is imported in the pipe of suction side of compressor, therefore the pipe of this suction side and cold-producing medium prevent that because of the evaporation of liquid refrigerant is cooled refrigerant temperature from rising.In addition, when air-conditioning load hour, cold-producing medium is too much, and this unnecessary cold-producing medium is not imported into compressor by outdoor heat converter, therefore the internal circulating load to cold-producing medium limits and regulates, so that make the cold-producing medium that flows in the indoor heat converter that is used unlikely too much.
Particularly in a second aspect of the present invention, use capillary as the 1st in the first aspect present invention, the 2nd decompressor, thus the resistance of the 1st, the 2nd bypass pipe regulated easily, and can constitute decompressor at an easy rate.
If adopt the 3rd aspect of the present invention, big and the outside air temperature of air-conditioning load when transfer valve all is opened is more than set point of temperature, when the load of outdoor air temperature is big, identical with first, second aspect of the present invention, the 1st open and close valve is opened, and rises so can prevent refrigerant temperature.In addition, in the indoor heat converter that the transfer valve that has in the transfer valve is cutting out, having no cold-producing medium flow through, air-conditioning load hour, identical with first and second aspects of the present invention, the 2nd open and close valve is opened, and can regulate the internal circulating load of cold-producing medium.
Fig. 1 is the refrigerant loop figure of air-conditioner of the present invention.
Among the figure, 1: air-conditioner
6: compressor
7: outdoor heat converter
8: decompressor
9: transfer valve
10: transfer valve
22: the 1 bypass pipes
23: the 1 open and close valves
24: capillary (the 1st pressure reducer)
25: the 2 bypass pipes
26: the 2 open and close valves
27: capillary (the 2nd pressure reducer)
28: control device
30: indoor heat converter
35: indoor heat converter
Embodiments of the invention are described below with reference to the accompanying drawings.The 1st, split type air conditioner, mainly by pipe arrangement 3 between outdoor unit 2, unit, be configured in not that the indoor units 4,5 of chummery constitutes.This air-conditioner has many indoor units, is a kind of multi-model air-conditioner therefore.
Compressor 6, outdoor heat converter 7, the transfer valve 9,10 that uses decompressor 8 capillaceous, use open and close valve, muffler 11,12, use assisted decompression device 13,14 capillaceous, service valve 15,16, service valve 17,18, muffler 19, accumulator 20 that compressed refrigerant is used are housed in the outdoor unit 2.21A, 21B, 21C, 21D, 21E, 21F, 21G, 21H, 21I connect the refrigerant pipe that these machines are used.The 22nd, the 1st bypass pipe of connection refrigerant pipe 21B and refrigerant pipe 21I, the way is provided with the 1st open and close valve 23 and capillary (the 1st pressure reducer) 24 therein.25 is the 2nd bypass pipes, and the way is provided with the 2nd open and close valve 26 and capillary (the 2nd pressure reducer) 27 therein.The 28th, control device is used to control the 1st, the 2nd open and close valve 23,25.This control device 28 is by transmitting signal mutually with each machine in the unit outside the control room with the control device (not shown) of indoor units.The 29th, a kind of suction side that is configured in outdoor heat converter, be used to detect the device of air themperature (outside air temperature, so-called atmospheric temperature) of the suction side of this heat exchanger.
Have in the outdoor unit 2 outdoor air is imported the pressure fan of using in the outdoor heat converter 7, but not shown.And also have in the indoor units 4,5 room air is imported the pressure fan that indoor heat converter is used, also not shown among the figure.
Have indoor heat converter 30, auxiliary refrigerant pipe 31,32, connecting portion 33,34 in the indoor units 4.Equally, have indoor heat converter 35, auxiliary refrigerant pipe 36,37, connecting portion 38,39 in the indoor units 5.
Connect with cable between unit between outdoor control device 28 and the Indoor Control Device (not shown), but not shown.
When air-conditioning load big (when for example transfer valve 9,10 is leaving) and outdoor air load are big (for example outside air temperature more than 39 ℃ time), above-mentioned control device 28 is just opened the 1st open and close valve 23, and the 2nd open and close valve 26 is closed.When air-conditioning load hour (when for example in the indoor heat converter 30,35 obsolete heat exchanger being arranged, when promptly having one closing in the transfer valve 9,10), this control device 28 is opened the 2nd open and close valve 26, and the 1st open and close valve 23 is closed.
Under the situation of this air-conditioner, put into abundant cold-producing medium, even make and to manage 40,41,42,43 size when long, also need not replenish cold-producing medium.For example, put into considerable cold-producing medium, make when pipe 40 and manage 41 length dimension to add up to 30 meters or manage 40 or manage and also need not replenish cold-producing medium when 41 length dimension reaches 20 meters.
Do not equip the hold-up tank of storing residual refrigerant in this air-conditioner.Therefore, outdoor heat converter 7 adopts bigger slightly heat exchanger to constitute, and so just can store remaining cold-producing medium.Capillary the 24, the 27th, the internal circulating load of adjusting cold-producing medium is used, but also it is poor to be used for keep-uping pressure.
The air-conditioner 1 of Gou Chenging can carry out cold air operation like this, but because cross valve is not installed, so can not carry out the heating installation running.
When using 1 indoor units, when for example only using indoor units 4, utilize control device that control valve 10 is opened, control valve 9 is closed.In addition, open and close valve 23 is closed, open and close valve 26 is opened.When valve is under this state, compressor 6 is in case running, about cold-producing medium inflow outdoor heat exchanger 7 of 70～80 percent, after capillary 8,14 decompressions, inflow indoor heat exchanger 30 utilizes this cold-producing medium to absorb the heat of room air, makes indoorly to become nice and cool.There is 20～30 percent cold-producing medium to flow into refrigerant pipe 21I in addition approximately by the 2nd bypass pipe 25.Like this, when only using an indoor heat converter (when hanging down load), the part of cold-producing medium is not utilized, and therefore just no-load running be adjusted to and be somebody's turn to do and hang down the refrigerant amount that load operation balances each other.Therefore, indoor heat converter can be not frozen.
When two indoor units 4,5 are all used, compressor 6 valve 9,10 be opened and open and close valve 23,26 pent states under turn round.After compressor 6 running, the cold-producing medium of discharging from compressor 6 is by behind the outdoor heat converter 7, and 21D, 21E are divided into two-way by pipe, and inflow indoor heat exchanger 35,30 makes room temperature lowering respectively.
Like this, under the state that two indoor units 4,5 all turn round, if outside air temperature raises, this outside air temperature reaches 39 ℃ (set points of temperature) when above, just control device 28 predicates high capacity, thereby open and close valve 23 is opened.After open and close valve 23 was opened, the part of cold-producing medium (about 5 percent) was imported into pipe 21I from compressor 6.Be imported into the cold-producing medium evaporation of pipe among the 21I, make this pipe 21I cool off (just can make temperature descend about 8 ℃ with percent 5 refrigerating capacity approximately).Follow this cooling, the cold-producing medium of suction side also is cooled.After the part of cold-producing medium is imported into pipe 21I; although the refrigerating capacity of indoor heat converter descends a little; but the protective device that can suppress like this running is stopped to move; for example; if the temperature of heat exchanger reaches more than 110 ℃; can suppress the action of overload relay (not shown), thereby prevent the appearance of the discontinuous situation of spoilling one's pleasure that causes of cold air operation, running is proceeded.Therefore, even in the date of sweltering heat in summer, also can make ceaselessly running continuously of cooling operation.
And do not use the compressor of ability changeable type in this air-conditioner and can regulate the high price parts such as valve of aperture, so can make the low price of air-conditioner.
If adopt first and second and three aspects of the present invention, under and the situation that the outdoor air load is also big big in the air-conditioning load, the 1st open and close valve is opened, the pipe and the cold-producing medium of compressor suction side cool off by means of the evaporation of cold-producing medium, can prevent that refrigerant temperature from rising, in addition, when air-conditioning load hour, the 2nd open and close valve is opened, and the part of cold-producing medium does not import compressor by outdoor heat converter, therefore the internal circulating load that can regulate cold-producing medium.And, in this air-conditioner, do not use the compressor of ability changeable type and can regulate high price such as the valve parts of aperture, therefore can make the low price of air-conditioner, during high capacity might as well, during low load might as well, can both be suitable for.
Particularly in a second aspect of the present invention, since use capillary as the 1st, the 2nd decompressor, thus the resistance of the 1st, the 2nd bypass pipe regulated easily, and can constitute decompressor at an easy rate, so can make the low price of air-conditioner, and design easily.
Claims (3)
- One kind will be with refrigerant pipe with the compressor of certain speed running, outdoor heat converter, decompressor, and the air-conditioner that couples together of many indoor heat converters that are arranged in parallel, it is characterized in that: connect the pipe of above-mentioned outdoor heat converter outlet side and the pipe of above-mentioned compressor suction side with the 1st bypass pipe, on this pipe, be provided with simultaneously the 1st open and close valve and the 1st pressure reducer, connect above-mentioned compressor with the 2nd bypass pipe and discharge the pipe of side and the pipe of compressor suction side, on this pipe, be provided with simultaneously the 2nd open and close valve and the 2nd pressure reducer, also have control device, carry out following control, promptly when air-conditioning load and outdoor air load are big, above-mentioned the 1st open and close valve is opened, make the 2nd open and close valve continue to close simultaneously, when air-conditioning load hour, above-mentioned the 1st open and close valve is closed, simultaneously above-mentioned the 2nd open and close valve is opened.
- One kind will be with refrigerant pipe with the compressor of certain speed running, outdoor heat converter, decompressor, and the air-conditioner that couples together of many indoor heat converters that are arranged in parallel, it is characterized in that: connect the pipe of above-mentioned outdoor heat converter outlet side and the pipe of above-mentioned compressor suction side with the 1st bypass pipe, on this pipe, be provided with simultaneously the 1st open and close valve and the 1st capillary, connect above-mentioned compressor with the 2nd bypass pipe and discharge the pipe of side and the pipe of compressor suction side, on this pipe, be provided with simultaneously the 2nd open and close valve and the 2nd capillary, also have control device, carry out following control, promptly when air-conditioning load and outdoor air load are big, open above-mentioned the 1st open and close valve, the 2nd open and close valve is closed, when air-conditioning load hour, above-mentioned the 1st open and close valve is closed, simultaneously above-mentioned the 2nd open and close valve is opened.
- 3. air-conditioner, it connects the compressor that turns round with certain speed with refrigerant pipe, outdoor heat converter, decompressor, and many indoor heat converters that are arranged in parallel, have and stop cold-producing medium and flow into each transfer valve that each heat exchanger is used, reach and detect the outside air temperature detector that outside air temperature is used, this air-conditioner is characterised in that: connect the pipe of above-mentioned outdoor heat converter outlet side and the pipe of above-mentioned compressor suction side with the 1st bypass pipe, on this pipe, be provided with simultaneously the 1st open and close valve and the 1st pressure reducer, connect above-mentioned compressor with the 2nd bypass pipe and discharge the pipe of side and the pipe of compressor suction side, on this pipe, be provided with simultaneously the 2nd open and close valve and the 2nd pressure reducer, also have control device, it is controlled as follows, promptly working as above-mentioned transfer valve all is opened, and when the temperature that above-mentioned outside air temperature detector detects is higher than set point of temperature, open above-mentioned the 1st open and close valve, close above-mentioned the 2nd open and close valve simultaneously, when in the above-mentioned control valve control valve of closing being arranged, close above-mentioned the 1st open and close valve, open above-mentioned the 2nd open and close valve simultaneously.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP111999/95 | 1995-05-10 | ||
| JP7111999A JPH08303877A (en) | 1995-05-10 | 1995-05-10 | Air conditioner |
| JP111999/1995 | 1995-05-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1159546A true CN1159546A (en) | 1997-09-17 |
| CN1124447C CN1124447C (en) | 2003-10-15 |
Family
ID=14575421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96104487A Expired - Fee Related CN1124447C (en) | 1995-05-10 | 1996-05-10 | Air conditioner |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH08303877A (en) |
| KR (1) | KR100423362B1 (en) |
| CN (1) | CN1124447C (en) |
| TW (1) | TW344447U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888658B (en) * | 2005-06-27 | 2012-05-02 | 乐金电子(天津)电器有限公司 | Control method for preventing liquid refrigerant from flowing into air conditioner |
| CN103398516A (en) * | 2013-07-11 | 2013-11-20 | 四川长虹电器股份有限公司 | Air conditioner pressure maintaining start-up system and control method of air conditioner pressure maintaining start-up system |
| CN104487777A (en) * | 2012-07-13 | 2015-04-01 | 株式会社日立制作所 | Heat source system |
| CN109425062A (en) * | 2017-08-31 | 2019-03-05 | 三星电子株式会社 | Air-conditioning |
| CN111336585A (en) * | 2020-03-17 | 2020-06-26 | 广东志高暖通设备股份有限公司 | Multi-split air conditioner floor heating system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101003356B1 (en) | 2003-10-21 | 2010-12-23 | 삼성전자주식회사 | Air Conditioner And Control Method Thereof |
| US20080234692A1 (en) * | 2007-03-06 | 2008-09-25 | Matt Brandt | Orthopedic jig, pin, and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5577765U (en) * | 1978-11-24 | 1980-05-29 | ||
| CN85102650B (en) * | 1985-04-12 | 1986-11-05 | 株式会社日立制作所 | Air conditioner |
| CN2153006Y (en) * | 1993-07-24 | 1994-01-12 | 邓永林 | One driving n split air conditioner |
-
1995
- 1995-05-10 JP JP7111999A patent/JPH08303877A/en active Pending
-
1996
- 1996-03-13 TW TW087208158U patent/TW344447U/en unknown
- 1996-05-06 KR KR1019960014611A patent/KR100423362B1/en not_active IP Right Cessation
- 1996-05-10 CN CN96104487A patent/CN1124447C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888658B (en) * | 2005-06-27 | 2012-05-02 | 乐金电子(天津)电器有限公司 | Control method for preventing liquid refrigerant from flowing into air conditioner |
| CN104487777A (en) * | 2012-07-13 | 2015-04-01 | 株式会社日立制作所 | Heat source system |
| CN103398516A (en) * | 2013-07-11 | 2013-11-20 | 四川长虹电器股份有限公司 | Air conditioner pressure maintaining start-up system and control method of air conditioner pressure maintaining start-up system |
| CN103398516B (en) * | 2013-07-11 | 2015-12-23 | 四川长虹电器股份有限公司 | A kind of air-conditioning pressurize start up system and control method thereof |
| CN109425062A (en) * | 2017-08-31 | 2019-03-05 | 三星电子株式会社 | Air-conditioning |
| CN109425062B (en) * | 2017-08-31 | 2021-04-06 | 三星电子株式会社 | Air conditioner |
| CN111336585A (en) * | 2020-03-17 | 2020-06-26 | 广东志高暖通设备股份有限公司 | Multi-split air conditioner floor heating system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100423362B1 (en) | 2004-07-19 |
| JPH08303877A (en) | 1996-11-22 |
| CN1124447C (en) | 2003-10-15 |
| TW344447U (en) | 1998-11-01 |
| KR960041927A (en) | 1996-12-19 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031015 Termination date: 20100510 |