CN101738945A - Method and system for controlling heating and refrigeration of water dispenser - Google Patents
Method and system for controlling heating and refrigeration of water dispenser Download PDFInfo
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- CN101738945A CN101738945A CN200810217619A CN200810217619A CN101738945A CN 101738945 A CN101738945 A CN 101738945A CN 200810217619 A CN200810217619 A CN 200810217619A CN 200810217619 A CN200810217619 A CN 200810217619A CN 101738945 A CN101738945 A CN 101738945A
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Abstract
The invention relates to a method and a system for controlling the heating and refrigeration of a water dispenser. In the method, the water dispenser has two working modes. When the water dispenser works in a timing start mode of which the state is an automatic work mode, a control unit reads the water getting information data in a data storage unit to further perform heating or refrigeration operation according to a hot-water temperature variation formula or a cold-water temperature variation formula; and when the water dispenser works in a startup mode of which the state is a manual work mode, the control unit reads and analyzes the set signal sent by a keying unit to perform corresponding heating and/or refrigeration operation, and stores the water getting information data corresponding to effective water getting in the data storage unit. By implementing the technical scheme of the invention, the system can automatically record water getting date, time and frequency of a user; according to water getting and use habits of the user, the system can start to work before the usage of a user and stop working at an expected downtime, thereby meeting the individuality requirement of users, and compared with the traditional water dispenser, the invention has better energy saving effect.
Description
Technical field
The present invention relates to water dispenser, more particularly, relate to a kind of heating and cooling control method and system of water dispenser.
Background technology
Along with the progress of science and technology, in order to satisfy the various demands of people, water dispenser also constantly develops and weeds out the old and bring forth the new, and still present water dispenser is water intaking date, time and the frequency of recording user automatically; Can not analyze the data of several weeks before; water intaking use habit according to the user; before the user uses, promptly start working, when expected downtime, quit work, so when the user wants to drink water; can not satisfy user's demand immediately; and need the user to open heating or refrigerating function in advance, in addition, can not accurately heat or freeze to the needed temperature of user; make the user to mix, just can satisfy the demand at the water in heat-connecting can and the cold jar.
Summary of the invention
The technical problem to be solved in the present invention is; water dispenser at prior art can not be according to user's water intaking use habit; before using, the user promptly starts working; the temperature that water is heated or freezes and drink to user's custom; and the defective that quits work when expected downtime provides a kind of heating and cooling control method and system of water dispenser.
The technical solution adopted for the present invention to solve the technical problems is: the heating and cooling control method of constructing a kind of water dispenser, it is characterized in that, described water dispenser has two kinds of mode of operations: when timing start mode, water intaking information data in the control module reading of data storage unit, and change formula or cold water temperature according to the hot water temperature and change formula, heat or refrigerating operation; When start-up mode was set, the signalization that control module reads and the analysis button unit sends to be heating accordingly and/or refrigerating operation, and will with the corresponding water intaking information data of effective water intaking, store in the data storage cell.
In the heating and cooling control method of water dispenser of the present invention, when timing start mode, may further comprise the steps:
S11: water dispenser powers on, and whether the water intaking information data is arranged in the judgment data storage unit, if, enter step S12, otherwise, step S15 entered;
S12: judge whether the water intaking type in the water intaking information data is hot water, if, enter step S13, otherwise it is a cold water, enter step S14;
S13: gather the temperature of water in the current heat jar, and change formula according to the hot water temperature, and water intaking time in the water intaking information data and water intaking temperature, calculate the heating starting time;
S14: gather the temperature of water in current cold jar, and change formula according to cold water temperature, and water intaking time in the water intaking information data and water intaking temperature, calculate the cooling activation time;
S15: finish.
In the heating and cooling control method of water dispenser of the present invention, described step S13 may further comprise the steps:
S131: gather the temperature of water in the current heat jar, whether judge it less than the water intaking temperature, if, enter step S132, otherwise, step S133 entered;
S132:, calculate the heating starting time according to the heating change formula;
S133: change formula according to cooling, calculate the heating starting time.
In the heating and cooling control method of water dispenser of the present invention, described step S14 may further comprise the steps:
S141: gather the temperature of water in current cold jar, whether judge it greater than the water intaking temperature, if, enter step S142, otherwise, step S143 entered;
S142: change formula according to refrigeration, calculate the cooling activation time;
S143: change formula according to heating up, calculate the cooling activation time.
According to another aspect of the present invention, provide a kind of heating and cooling control system of water dispenser, it comprises: data storage cell, push-button unit, control module, collecting unit and computing unit, wherein,
Data storage cell is used for storage water intaking information data;
Push-button unit is used to be provided with water intaking type and the water intaking time and the corresponding setting signal is sent to control module;
Control module is used for carrying out timing according to the water intaking information data and starts, or according to signalization startup is set, and will be provided with when starting and the corresponding water intaking information data of effective water intaking, stores in the data storage cell;
Collecting unit is used for gathering the Current Temperatures of heat jar and cold jar of water, and the discharge in hot jar and cold jar, the total amount of fetching water and break time;
Computing unit is used for changing formula or cold water temperature variation formula according to Current Temperatures, the hot water temperature of water intaking information data, heat jar or cold jar of water, calculates heating or cooling activation time.
In the heating and cooling control system of water dispenser of the present invention, described water intaking information data comprises water intaking type, water intaking time and water intaking temperature.
In the heating and cooling control system of water dispenser of the present invention, described water intaking type is hot water or cold water; The described water intaking time comprises water intaking date and water intaking constantly.
In the heating and cooling control system of water dispenser of the present invention, described effective water intaking be discharge greater than 15ml/s, water intaking total amount greater than 100ml and water intaking break time less than 3s.
In the heating and cooling control system of water dispenser of the present invention, described hot water temperature changes formula and comprises that heating change formula and cooling change formula; Described cold water temperature changes formula and comprises that refrigeration changes formula and intensification changes formula.
Implement the heating and cooling control method and the system of water dispenser of the present invention, have following beneficial effect: water intaking date, time and the frequency of recording user automatically; Can analyze the data of several weeks before,, before the user uses, promptly start working according to user's water intaking use habit; when expected downtime, quit work; can satisfy user's individual demand, and compare, have energy-saving effect preferably with traditional water dispenser.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the theory diagram of the heating and cooling control system of water dispenser of the present invention;
Fig. 2 is the temperature changing curve diagram of system shown in Figure 1 heating and cooling;
Fig. 3 is a frequency analysis synoptic diagram of getting hot water or cold water's time according to the temperature changing curve diagram of Fig. 2;
Fig. 4 is the process flow diagram of the heating and cooling control method of water dispenser of the present invention.
Embodiment
In the heating and cooling control technology scheme of a kind of water dispenser of the present invention, this water dispenser has two kinds of mode of operations: when timing start mode, water intaking information data in the control module reading of data storage unit, and change formula or cold water temperature according to the hot water temperature and change formula, heat or refrigerating operation; When start-up mode was set, the signalization that control module reads and the analysis button unit sends to be heating accordingly and/or refrigerating operation, and will with the corresponding water intaking information data of effective water intaking, store in the data storage cell.
As shown in Figure 1, in the heating and cooling control system of water dispenser of the present invention, comprising: data storage cell, push-button unit, control module, collecting unit and computing unit, wherein, data storage cell is used for storage water intaking information data; Push-button unit is used to be provided with water intaking type and the water intaking time and the corresponding setting signal is sent to control module; Control module is used for carrying out timing according to the water intaking information data and starts, or according to signalization startup is set, and will be provided with when starting and the corresponding water intaking information data of effective water intaking, stores in the data storage cell; Collecting unit is used for gathering the Current Temperatures of heat jar and cold jar of water, and the discharge in hot jar and cold jar, the total amount of fetching water and break time; Computing unit is used for changing formula or cold water temperature variation formula according to Current Temperatures, the hot water temperature of water intaking information data, heat jar or cold jar of water, calculates heating or cooling activation time.When specific design, the water intaking information data comprises water intaking type, water intaking time and water intaking temperature; The water intaking type is hot water or cold water; The water intaking time comprises water intaking date and water intaking constantly; Effectively water intaking for discharge greater than 15ml/s, water intaking total amount greater than 100ml and water intaking break time less than 3s.The hot water temperature changes formula and comprises that heating change formula and cooling change formula; Described cold water temperature changes formula and comprises that refrigeration changes formula and intensification changes formula, in the technical program, by statistical study and convenient the correction, as shown in Figure 2, heating change formula, cooling being changed formula, refrigeration changes formula and heats up and change formula and be embodied as that hot water temperature's growth curve Chu, hot water temperature reduce curve C hd, cold water temperature growth curve Ccu, cold water temperature reduces curve C cd.Under this kind embodiment, the accuracy of the temperature data of the collection of original (temperature) data is quite important, because four temperature increase, die-away curve are extremely important, it is the comparable data of carrying out computing system work, stopping.Be exactly to survey current water temperature in addition, these data also are the data that participate in calculating.The accuracy of temperature data directly affects system works, thus require the approaching more reality of temperature of collection good more, and the error of temperature sensor is the smaller the better.
In this system, in order to realize accurate heating, refrigeration and statistical study, it has an independently-powered circuit, (date and time that this clock write down is for carrying out the basis of data analysis later on can to show current date and time accurately, so the necessary accuracy of this clock is very high, every month time error should be in 3mins), have under water dispenser power supply its unaccessed state that the time need not to change battery more than 3 years.At holding state or when the user did not have operation in 5 seconds, the LCDs on the water dispenser housing (LCD) shows current date, time and hot and cold water temperature.When carrying out data recording, the user whenever once effectively fetches water, record date and constantly of type (hot water, cold water), the water intaking of water intaking once then, with one day be a subelement, thereby be stored in data storage cell, data kept more than 5 weeks.Computing unit when carrying out data analysis, with a week as a data analysis unit.As current date is 0: 1 on Dec 3rd, 2007 (week 1), then at the moment water intaking kind, the time in week 1 in preceding 3 weeks is carried out statistical study.If 3 weeks of data deficiencies before the current date then analyze by all numbers of reality; If do not have any data water dispenser before the current date then carry out work (be that the user whenever gets a hot water or cold water and need open once refrigeration, hot merit energy, water intaking back water dispenser is in off-mode) by manual mode fully.Can obtain as following table 1 after the data in week 1 in preceding 3 weeks are added up.
| The heat-obtaining water time | ??7:15(T1)?8:20(T2)??9:30???11:30??17:50??19:20…Tn |
| Get the cold water time | ??9:03?????13:20?????17:50??20:36??23:10… |
Table 1
As shown in Figure 3, to getting the frequency analysis of carrying out of hot water or cold water's time:
1, obtains water temperature S0 in the current heat jar in the T0 moment (the T1 moment is 0.5h before),, calculate the work moment Tw1 when T1 reaches the appointment heating-up temperature constantly according to heating-up temperature upcurve Chu;
2, heat constantly at Ts1 and reach assigned temperature, (Ts1 and T1 constantly may have less discrepancy, when | Ts1-T1|＜1min, think that then temperature curve is normal, then constantly revise temperature curve again in the 1st heating of next day as error when big.), carry out the music tip heating this moment and finish, wish that the user fetches water;
3, as user water intaking this moment, after water intaking was finished, system calculated the 2nd time work Tw2 and work constantly according to current water temperature and Chu and finishes Ts2 constantly.If | during Ts2-T2|＞1min, then system is in waiting status, and recomputates Tw2 and Ts2 constantly according to heating-up temperature decline curve Chd and current water temperature, begins heating constantly at new Tw2.As when calculating Tw2, Ts2 for the first time, | Ts2-T2|＜1min then system begins heating immediately;
4, wait for user's water intaking, repeat the said system analysis;
5, as in system work process, the user whenever once fetches water and is 1 interruption, must analyze current water temperature immediately after each water intaking is finished, and determines the moment of next time working according to temperature curve.
The functional requirement of the LCD display that is provided with on the housing of this water dispenser.At work, this water dispenser powers up first or the power supply circuit of clock battery has consumed and when changing battery, need to set current date, time.A, when powering up first, start the music that powers on, hot water or cold water's temperature shows the temperature of current water.Date this moment, time showing flicker, by year, month, day, hour, minute that key carries out the select progressively date is set, whenever by adding hot key once, the flicker numeral adds 1, and whenever by the refrigeration key once, the numeral of then glimmering subtracts 1; When pin heating, the refrigeration button does not then increase continuously, reduces when not putting.Date, time adjust after again by key once being set or waiting for 3 seconds, then adjust date, time and finish.B, under normal operating position, if need to adjust date, time, then access current date, time and adjust with heating, the key that freezes again by key is set.The push-button unit of this system the options button that key is a parameter setting is set, by key being set once, heating is provided with the temperature flicker and shows (the heating preset temperature is 92 ℃); By key twice is set, refrigeration is provided with the temperature flicker and shows (the refrigeration preset temperature is 7 ℃, the compression mechanism cold mould); By key being set three times, the time flicker on date shows; By key being set four times, the month flicker on date shows; By key being set five times, the day flicker on date shows; By key being set six times, hour flicker of time shows; By key being set seven times, minute flicker of time shows; Obtain wait nothing operation in 3 seconds for eight times by key is set, setting is finished.
This water dispenser has two kinds of mode of operations: automatically with manual.Mode key is used for automatically, the switching of manual work pattern.B. automatic mode is that system works automatically according to user's use habit (data are arranged).Manual mode need be opened once refrigeration, hot merit energy for the user whenever gets a hot water or cold water, and water intaking back water dispenser is in off-mode.
The push-button unit of this water dispenser has the hot key of adding and refrigeration key, and its function is: a, press key is set after, by heating or refrigeration key, then the parameter of She Zhiing will add 1 or subtract 1 again.B, under the manual mode holding state, by heating, refrigeration key, heating, refrigeration icon show that dynamically then heating, refrigerating function are opened; Under manual mode heating, refrigeration work state, press heating, refrigeration key, heating, refrigeration icon static state show that then heating, refrigerating function stop.C, invalid by the key that heats, freezes under automatic mode.This push-button unit also has virgin locking key, presses pattern simultaneously and button is set, and then system is in locking or released state.Be provided with under the state non-, the LCD temperature displayed is the observed temperature of hot water, cold water.
The higher temperature sensor of degree of accuracy will be selected by this system, temperature error will be controlled at ± 1 ℃.
The key parameter of this water dispenser must satisfy the accuracy of clock, and the accuracy that clock is walked about is extremely important, and it has directly determined four temperature curves, has determined work constantly.So require clock to be necessary for independently-powered circuit,, should keep need not to change in 3 years battery even under no water dispenser power supply electric power thus supplied.Its clock request: a, independently-powered design not having under the no water dispenser power supply electric power thus supplied, should keep need not to change in 3 years battery.Under uncomplicated prerequisite, can consider to utilize the water dispenser power supply.B, accurately necessary when clock is walked, error control was in 3mins in every month.The effectively judgement of water intaking, the user effectively fetches water judges it also is very important, because effectively the water intaking operation will be noted, and is the basis that is used for carrying out data analysis, have only the validity that judges water intaking accurately could comparatively obtain user's use habit comparatively accurately.A, because user water intaking is many sometimes, sometimes less, interrupted sometimes, so judge with the flow of a period of time water; The present about 1.2-2.4L/min of flow because of water swivel, the about 20ml/s-40ml/s of discharge.The preliminary judgement foundation, as discharge＞15ml/s, water intaking total amount＞100ml, break time＜3s then thinks once effectively water intaking operation.B. similar three-way sensor is installed in the front end of water swivel, and the sensitivity of this sensor is had relatively high expectations.
As shown in Figure 4, when timing start mode, may further comprise the steps: S11: water dispenser powers on, and whether the water intaking information data is arranged in the judgment data storage unit, if, enter step S12, otherwise, step S15 entered; S12: judge whether the water intaking type in the water intaking information data is hot water, if, enter step S13, otherwise it is a cold water, enter step S14; S13: gather the temperature of water in the current heat jar, and change formula according to the hot water temperature, and water intaking time in the water intaking information data and water intaking temperature, calculate the heating starting time; S14: gather the temperature of water in current cold jar, and change formula according to cold water temperature, and water intaking time in the water intaking information data and water intaking temperature, calculate the cooling activation time; S15: finish.
Wherein, described step S13 may further comprise the steps: S131: gather the temperature of water in the current heat jar, whether judge it less than the water intaking temperature, if, enter step S132, otherwise, step S133 entered; S132:, calculate the heating starting time according to the heating change formula; S133: change formula according to cooling, calculate the heating starting time.Step S14 may further comprise the steps: S141: gather the temperature of water in the current heat jar, whether judge it greater than the water intaking temperature, if, enter step S142, otherwise, step S143 entered; S142: change formula according to refrigeration, calculate the heating starting time; S143: change formula according to heating up, calculate the heating starting time.
Claims (9)
1. the heating and cooling control method of a water dispenser, it is characterized in that, described water dispenser has two kinds of mode of operations: when timing start mode, water intaking information data in the control module reading of data storage unit, and change formula or cold water temperature according to the hot water temperature and change formula, heat or refrigerating operation; When start-up mode was set, the signalization that control module reads and the analysis button unit sends to be heating accordingly and/or refrigerating operation, and will with the corresponding water intaking information data of effective water intaking, store in the data storage cell.
2. the heating and cooling control method of water dispenser according to claim 1 is characterized in that, when timing start mode, may further comprise the steps:
S11: water dispenser powers on, and whether the water intaking information data is arranged in the judgment data storage unit, if, enter step S12, otherwise, step S15 entered;
S12: judge whether the water intaking type in the water intaking information data is hot water, if, enter step S13, otherwise it is a cold water, enter step S14;
S13: gather the temperature of water in the current heat jar, and change formula according to the hot water temperature, and water intaking time in the water intaking information data and water intaking temperature, calculate the heating starting time;
S14: gather the temperature of water in current cold jar, and change formula according to cold water temperature, and water intaking time in the water intaking information data and water intaking temperature, calculate the cooling activation time;
S15: finish.
3. the heating and cooling control method of water dispenser according to claim 2 is characterized in that, described step S13 may further comprise the steps:
S131: gather the temperature of water in the current heat jar, whether judge it less than the water intaking temperature, if, enter step S132, otherwise, step S133 entered;
S132:, calculate the heating starting time according to the heating change formula;
S133: change formula according to cooling, calculate the heating starting time.
4. the heating and cooling control method of water dispenser according to claim 2 is characterized in that, described step S14 may further comprise the steps:
S141: gather the temperature of water in current cold jar, whether judge it greater than the water intaking temperature, if, enter step S142, otherwise, step S143 entered;
S142: change formula according to refrigeration, calculate the cooling activation time;
S143: change formula according to heating up, calculate the cooling activation time.
5. the heating and cooling control system of a water dispenser is characterized in that, comprising: data storage cell, push-button unit, control module, collecting unit and computing unit, wherein,
Data storage cell is used for storage water intaking information data;
Push-button unit is used to be provided with water intaking type and the water intaking time and the corresponding setting signal is sent to control module;
Control module is used for carrying out timing according to the water intaking information data and starts, or according to signalization startup is set, and will be provided with when starting and the corresponding water intaking information data of effective water intaking, stores in the data storage cell;
Collecting unit is used for gathering the Current Temperatures of heat jar and cold jar of water, and the discharge in hot jar and cold jar, the total amount of fetching water and break time;
Computing unit is used for changing formula or cold water temperature variation formula according to Current Temperatures, the hot water temperature of water intaking information data, heat jar or cold jar of water, calculates heating or cooling activation time.
6. the heating and cooling control system of water dispenser according to claim 5 is characterized in that, described water intaking information data comprises water intaking type, water intaking time and water intaking temperature.
7. the heating and cooling control system of water dispenser according to claim 6 is characterized in that, described water intaking type is hot water or cold water; The described water intaking time comprises water intaking date and water intaking constantly.
8. the heating and cooling control system of water dispenser according to claim 5 is characterized in that, described effective water intaking be discharge greater than 15ml/s, water intaking total amount greater than 100ml and water intaking break time less than 3s.
9. the heating and cooling control system of water dispenser according to claim 1 is characterized in that, described hot water temperature changes formula and comprises that heating change formula and cooling change formula; Described cold water temperature changes formula and comprises that refrigeration changes formula and intensification changes formula.
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| CN200810217619A CN101738945A (en) | 2008-11-21 | 2008-11-21 | Method and system for controlling heating and refrigeration of water dispenser |
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| CN200810217619A CN101738945A (en) | 2008-11-21 | 2008-11-21 | Method and system for controlling heating and refrigeration of water dispenser |
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| CN101972108A (en) * | 2010-09-17 | 2011-02-16 | 惠阳亚伦塑胶电器实业有限公司 | Intelligent electric heating kettle and method for judging water using habit of user for same |
| CN102374645A (en) * | 2010-08-17 | 2012-03-14 | 博西华电器（江苏）有限公司 | Intelligent water heater |
| CN102783914A (en) * | 2012-07-24 | 2012-11-21 | 罗嗣雄 | Water dispenser |
| CN103462500A (en) * | 2013-08-15 | 2013-12-25 | 王波兰 | Refrigeration water fountain device |
| CN105016405A (en) * | 2015-06-29 | 2015-11-04 | 佛山市美的清湖净水设备有限公司 | Water purifier and control method thereof |
| CN105725791A (en) * | 2014-12-12 | 2016-07-06 | 佛山市顺德区美的饮水机制造有限公司 | Control method and system of water dispenser, server and water dispenser |
| CN106033199A (en) * | 2015-03-17 | 2016-10-19 | 联想(北京)有限公司 | Liquid supply device and control method thereof |
| CN107007147A (en) * | 2016-12-29 | 2017-08-04 | 广州小海电子产品有限公司 | Auto tea making method |
| CN107145067A (en) * | 2017-05-24 | 2017-09-08 | 青川县科腾电子开发有限公司 | The control method and system of a kind of second boiling water dispenser |
| CN107221136A (en) * | 2017-04-28 | 2017-09-29 | 深圳市亿兆互联技术有限公司 | A kind of intelligent drinking machine apparatus, control method and system |
| CN110934502A (en) * | 2019-12-04 | 2020-03-31 | 珠海格力电器股份有限公司 | Water dispenser control method and device, storage medium and water dispenser |
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| CN102374645A (en) * | 2010-08-17 | 2012-03-14 | 博西华电器（江苏）有限公司 | Intelligent water heater |
| CN102374645B (en) * | 2010-08-17 | 2016-02-03 | 博西华电器（江苏）有限公司 | Intelligent water heater |
| CN101972108B (en) * | 2010-09-17 | 2012-10-10 | 惠阳亚伦塑胶电器实业有限公司 | Intelligent electric heating kettle and method for judging water using habit of user by the intelligent electric heating kettle |
| CN101972108A (en) * | 2010-09-17 | 2011-02-16 | 惠阳亚伦塑胶电器实业有限公司 | Intelligent electric heating kettle and method for judging water using habit of user for same |
| CN102783914A (en) * | 2012-07-24 | 2012-11-21 | 罗嗣雄 | Water dispenser |
| CN103462500A (en) * | 2013-08-15 | 2013-12-25 | 王波兰 | Refrigeration water fountain device |
| CN105725791A (en) * | 2014-12-12 | 2016-07-06 | 佛山市顺德区美的饮水机制造有限公司 | Control method and system of water dispenser, server and water dispenser |
| CN106033199A (en) * | 2015-03-17 | 2016-10-19 | 联想(北京)有限公司 | Liquid supply device and control method thereof |
| CN105016405A (en) * | 2015-06-29 | 2015-11-04 | 佛山市美的清湖净水设备有限公司 | Water purifier and control method thereof |
| CN105016405B (en) * | 2015-06-29 | 2018-03-30 | 佛山市美的清湖净水设备有限公司 | Water purifier and control method thereof |
| CN107007147A (en) * | 2016-12-29 | 2017-08-04 | 广州小海电子产品有限公司 | Auto tea making method |
| CN107007147B (en) * | 2016-12-29 | 2020-05-26 | 广州小海电子产品有限公司 | Automatic tea making method |
| CN107221136A (en) * | 2017-04-28 | 2017-09-29 | 深圳市亿兆互联技术有限公司 | A kind of intelligent drinking machine apparatus, control method and system |
| CN107145067A (en) * | 2017-05-24 | 2017-09-08 | 青川县科腾电子开发有限公司 | The control method and system of a kind of second boiling water dispenser |
| CN110996730A (en) * | 2017-08-07 | 2020-04-10 | 株式会社穗菲尔德 | Beverage making device |
| US11622646B2 (en) | 2017-08-07 | 2023-04-11 | Daito Giken, Inc. | Beverage producing apparatus |
| CN110934502A (en) * | 2019-12-04 | 2020-03-31 | 珠海格力电器股份有限公司 | Water dispenser control method and device, storage medium and water dispenser |
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Open date: 20100616 |