CN101726034A - Electromagnetic temperature-control heat supply system - Google Patents
Electromagnetic temperature-control heat supply system Download PDFInfo
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- CN101726034A CN101726034A CN200910250575A CN200910250575A CN101726034A CN 101726034 A CN101726034 A CN 101726034A CN 200910250575 A CN200910250575 A CN 200910250575A CN 200910250575 A CN200910250575 A CN 200910250575A CN 101726034 A CN101726034 A CN 101726034A
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Abstract
The invention discloses an electromagnetic temperature-control heat supply system which comprises a heat receiver, an electromagnetic heating temperature-control system and at least one radiator, wherein the electromagnetic heating temperature-control system comprises an electromagnetic heating temperature-control device, an electromagnetic coil and a temperature measuring sensor; the electromagnetic coil is surrounded outside the heat receiver; the electromagnetic heating temperature-control device generates an alternating magnetic field after the alternating high-frequency current is input and enables the heat receiver to generate eddy-current heating; the temperature-measuring sensor is arranged inside the heat receiver, connected with the electromagnetic heating temperature-control device and used for measuring the internal temperature of the heat receiver and carries out data acquisition; the electromagnetic heating temperature-control device adjusts the alternating high-frequency current or controls the alternating high-frequency current to be on and off according to the acquired data and requirements; the heat receiver is connected with the radiator through a water inlet pipe and a water return pipe, and a heat transfer medium circularly flows between the heat receiver and the radiator so as to keep the heat supply effect of the radiator. The electromagnetic temperature-control heat supply system can not only save the energy and protect the environment, but also accurately measure and control the temperature, has stable heat supply temperature and greatly saves the manpower.
Description
Technical field
The present invention relates to a kind of heating system, especially a kind of heating system that adopts electromagnetic induction to heat temperature control.
Background technology
Traditional heating system is to be the heating of boiler or other heating device by moulded coal, natural gas or wet goods, makes wherein water or the intensification of being heated of other heated medium, then by advance, return pipe and circulating pump be delivered to the radiating end heat supply.The shortcoming of this mode is that energy utilization rate is low, contaminated environment is serious, can not carry out the detection and the control of temperature, causes the heat supply temperature instability easily, and the manually-operated that fuel adds makes operation loaded down with trivial details, has reduced operating efficiency.
Summary of the invention
In order to overcome above-mentioned defective, the object of the present invention is to provide a kind of energy-conserving and environment-protective, can be automatically the accurate electromagnetic temperature-control heat supply system of measuring and controlling temp.
In order to achieve the above object, electromagnetic temperature-control heat supply system of the present invention is achieved through the following technical solutions: comprise thermoreceptor, electromagnetic heating temperature control system, and at least one radiator, wherein:
Described electromagnetic heating temperature control system comprises electromagnetic heating temperature control device, solenoid and temperature transducer;
Described solenoid is surrounded on described thermoreceptor outside, and links to each other with described electromagnetic heating temperature control device, and described electromagnetic heating temperature control device output AC high frequency electric produces alternating magnetic field and makes thermoreceptor produce eddy-current heating to described solenoid;
Described temperature transducer is located at described thermoreceptor inside, and link to each other with described electromagnetic heating temperature control device, be used to survey the thermoreceptor temperature inside, electromagnetic heating temperature control device is gathered the temperature value that temperature transducer records, and exchanging the output of high frequency electric according to this thermometric value adjustment, described adjustment comprises size or the control break-make of adjusting the output AC high frequency electric;
Described radiator links to each other with thermoreceptor with return pipe by water inlet pipe.
Further, described electromagnetic heating temperature control device comprises microprocessor module MCU, temperature detecting module, interchange high frequency output module, AC/DC ac-dc converter circuit module and power supply, wherein:
Described power supply is used to described electromagnetic heating temperature control device that electric energy is provided, and it is direct current that alternating current is inputed to described AC/DC ac-dc converter circuit module converts;
Described interchange high frequency output module under described microprocessor module MCU control, is converted to the required interchange high frequency electric of electromagnetism heating with direct current, and exports described solenoid to;
Described temperature detecting module is connected with temperature transducer on the thermoreceptor, is used to detect the thermometric value that obtains temperature transducer, and this thermometric value is fed back to described microprocessor module MCU;
Described microprocessor module MCU is as the control core of whole electromagnetic heating temperature control system, come whole system is controlled, wherein dispose the software systems that are used for measuring and controlling temp, can be according to the thermometric value that is received, control adjustment exchanges the output current size of high frequency output module, perhaps stops or starting the output AC high frequency electric as required.
Compared with prior art, beneficial effect advantage of the present invention is: adopted the electromagnetic induction heating energy supply, both improved energy utilization rate, reduced environmental pollution again; Can accurately measure the temperature of the chamber interior of being heated, and can adjust size or the control break-make that exchanges the high frequency output current as required automatically, heat supply temperature is stable, has reduced the waste of manpower simultaneously, has improved operating efficiency.
Description of drawings
Fig. 1 is the schematic diagram of electromagnetic temperature-control heat supply system;
Fig. 2 is the schematic diagram of a specific embodiment of electromagnetic temperature-control heat supply system;
Fig. 3 is the flow chart of the electromagnetic heating temperature control system of electromagnetic temperature-control heat supply system;
Fig. 4 is a power circuit schematic diagram shown in Figure 1;
Fig. 5 is the fundamental diagram of AC/DC ac-dc converter circuit module shown in Figure 1;
Fig. 6 is the structure chart of AC/DC ac-dc converter circuit module shown in Figure 1;
Fig. 7 is from adjusting the flow chart of pattern;
Fig. 8 is the fundamental diagram of PID branch among Fig. 7;
Fig. 9 is that temperature control system of the present invention carries out the temperature control result schematic diagram when adjusting pattern.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, electromagnetic temperature-control heat supply system of the present invention is achieved through the following technical solutions: comprise thermoreceptor 4, electromagnetic heating temperature control system, and at least one radiator 5, wherein:
Described electromagnetic heating temperature control system comprises electromagnetic heating temperature control device 1, solenoid 3 and temperature transducer 2;
Described solenoid is surrounded on the thermoreceptor outside, and links to each other with electromagnetic heating temperature control device, and described electromagnetic heating temperature control device output AC high frequency electric produces alternating magnetic field and makes thermoreceptor produce eddy-current heating to described solenoid;
Described temperature transducer is located at thermoreceptor inside, and link to each other with described electromagnetic heating temperature control device, be used to survey the thermoreceptor temperature inside, described electromagnetic heating temperature control device is gathered the temperature value that temperature transducer records, and exchanging the output of high frequency electric according to this thermometric value adjustment, described adjustment comprises the size of adjusting the output AC high frequency electric or adjusts break-make;
Described radiator links to each other with thermoreceptor with return pipe 7 by water inlet pipe 6; In the described thermoreceptor heat transfer medium is arranged, this heat transfer medium can be water, oil, steam or superconducting fluid etc., heat transfer medium is delivered to radiator heating by woven hose behind the heat temperature raising, and is circulating between thermoreceptor and radiator under the control of circulating pump, to keep the heating effect of radiator.
As shown in Figure 1, described electromagnetic heating temperature control device comprises microprocessor module MCU 13, temperature detecting module 11, exchanges high frequency output module 12, AC/DC ac-dc converter circuit module 14, and power supply 15, wherein:
Described power supply is used to described electromagnetic heating temperature control device that electric energy is provided, and it is direct current that alternating current is inputed to described AC/DC ac-dc converter circuit module converts;
Described interchange high frequency output module under described microprocessor module MCU control, is converted to the required interchange high frequency electric of electromagnetism heating with direct current, and exports described solenoid to;
Described temperature detecting module is connected with temperature transducer on the thermoreceptor, is used to detect the thermometric value that obtains temperature transducer, and this thermometric value is fed back to described microprocessor module MCU;
Described microprocessor module MCU is as the control core of whole electromagnetic heating temperature control system, come whole system is controlled, wherein dispose the software systems that are used for measuring and controlling temp, can be according to the thermometric value that is received, control adjustment exchanges the output current size of high frequency output module, perhaps stops or starting the output AC high frequency electric as required.
After electromagnetic temperature-control heat supply system enters operate as normal, under the control of electromagnetic heating temperature control system, adjust size or the control break-make that exchanges high frequency electric according to the temperature data that feedback obtains, thereby adjust the heated condition of control solenoid, enter ...-thermometric-heating (or stopping heating)-thermometric-heating (or stopping heating)-... this real-time adjustment duty, reaching the purpose that keeps the heat transfer medium temperature constant, thereby guarantee the radiating effect of radiator indirectly.
As shown in Figure 2, provided a specific embodiment of this invention.
Among the embodiment shown in Figure 2, the thermoreceptor of electromagnetic temperature-control heat supply system disposes solenoid outward, is used for thermoreceptor is carried out the electromagnetism heating, and the thermoreceptor internal configurations has a temperature transducer, and temperature transducer is PT100 herein.Described power unit adopts 220 volts 50 hertz electric main power supply, civil power is inputed in the micro computer heating controller that is made of MCU, under the control of micro computer heating controller, civil power is carried out after AC/DC (ac/dc) is converted to direct current, the high-frequency ac voltage that again direct current utilization interchange high frequency output module is converted to 18KHz inputs in the solenoid, is used for thermoreceptor is heated.Among this embodiment, also comprise a user control interface, it is touch-screen, be used for by touch-screen the electromagnetic heating temperature control system of electromagnetic temperature-control heat supply system of the present invention being controlled for the user, the user can be by interface input control parameter, the temperature value of She Dinging or start or stop heating by touch-screen for example, the user also can check current heating-up temperature by touch-screen.The user exports described micro computer heating controller (microprocessor module MCU promptly corresponding shown in Figure 1) by the control information (comprising temperature control instruction and design temperature value information) of touch-screen input to by a PCC (programming computer controller) programmable computer controller module, thereby realizes the control of user to whole temperature control system.Described touch-screen and PPC programmable computer controller block configuration have a DC power supplier, and the direct current of output 24V is to touch-screen and PPC module for power supply.
As shown in Figure 3, provided the fundamental diagram of the electromagnetic heating temperature control system part of this invention.
At first, with 220KV, the alternating current of 50Hz becomes direct current to electromagnetic heating temperature control device by inner AC/DC change-over circuit (can be current rectifying and wave filtering circuit herein); Pass through PFM (pulse frequency modulated, Pulse Frequency Modulation) control circuit (being interchange high frequency output module shown in Figure 1) again and convert direct current to the 18-30KHz high frequency voltage; The electric current that changes can be according to the material difference by solenoid at a high speed, produce the different wave length magnetic field that changes at a high speed, when the magnetic line of force in the magnetic field passes through the thermoreceptor of metal material, can in metallic object, produce countless little eddy current, thereby make thermoreceptor heating at a high speed itself.In heating process, measure thermoreceptor temperature inside value, carry out temperature controlled temperature control module (being MCU module shown in Figure 1) and adjust PFM (pulse frequency modulated according to dut temperature, Pulse Frequency Modulation) the interchange high-frequency heating size of current of control circuit output, also predeterminable alarm conditions once, when temperature value reaches alarm conditions, also can carry out alarm prompt to the user.MCU carries out temperature control can pass through ratio (Proportion)-integration (Integral)-differential (Derivative) controller PID and carry out temperature control, or controls through carry out temperature from adjusting.
As shown in Figure 4, provided circuit diagram based on power unit shown in Figure 1.This power supply adapts to temperature control system to power requirement by the adjustment of resistance.When promptly adjust exchanging high frequency output, can adjust and realize, also again under the MCU module controls, realize by adjusting the resistance that civil power is converted to galvanic power supply to exchanging the high frequency output module.Concrete employing is above-mentioned which kind of adjustment mode, can select as required.
Microprocessor MCU module shown in Figure 1 is used for the adjustment of major control temperature, is the core temperature control module.Fig. 5 and Fig. 6 are the operation principle and the structural representations of an A/D change-over circuit in the MCU module.This A/D change-over circuit becomes data signal with the current conversion that power supply provides, and calculates the output controlled quentity controlled variable again according to control algolithm.Bidirectional triode thyristor shown in Figure 6 adopts the method for phase shift to trigger, and zero cross detection circuit detects the zero crossing of power supply A phase voltage, and the MCU control module is sent interrupt signal in temperature control system, thereby starts timer work.Count according to controlled quentity controlled variable, send triggering signal by interface chip to zero back.Circuits for triggering send trigger impulse in view of the above, and then the conducting of control silicon controlled, the temperature of adjusting device.The sampling period then, the collecting temperature data are calculated controlled quentity controlled variable according to control algolithm; Simultaneously, detect the zero cross signal of power supply A phase; A phase zero passage then causes interruption, carries out controllable silicon and triggers the phase shift processing.
As shown in Figure 7, shown that MCU carries out temperature controlled flow chart by the PID controller.
At first move main program, carry out data initialization;
Judge whether to arrive the sampling time,, then directly finish if not to adjust if then further judge whether to enter from setting procedure;
Judge whether to enter, if then carry out from setting procedure from setting procedure; Execution finishes from setting procedure, then upgrades pid parameter and returns again and judge whether to carry out from adjusting, if finish as yet, then further judges whether to have finished adjustment, if do not finish, then returns again and whether then judges the sampling time, if finished then end.
Judge not enter when setting procedure, then enter the PID branch road, carry out not divisional processing of proportional integral, judge whether to have finished adjustment afterwards,, then return again and whether then to judge the sampling time, finish if finished then if do not finish.
The present invention has following two characteristics:
1, output can be data mode D, also can be switching value form Y, can freely select when programming, as shown in Figure 6.
2, can obtain best sampling time and pid parameter value by adjusting certainly, improve control accuracy.As Fig. 7, shown in Figure 8.Fig. 8 has explained the PID. among Fig. 7 in detail.Fig. 9 is temperature control result accurately.
As shown in Figure 8, shown analog pid control system schematic diagram.Among Fig. 8, the control law of PID is as follows:
e(t)＝r(t)-c(t)
u(t)＝Kp[e(t)+1/Ti∫e(t)dt+TD?de(t)/dt]
Wherein, e (t) is a deviation, and r (t) is a set-point, and c (t) is a real output value, and u (t) is a controlled quentity controlled variable; Kp, Ti, TD are respectively proportionality coefficient, time of integration coefficient, derivative time coefficient.
Operation result:
1. analog quantity output: the digital quantity form of MV=u (t).
2. switching point output: Y=T*[MV/PID exports the upper limit].Y is the interior output point of control cycle turn-on time.Increase operation output valve MV minimizing along with measured value PV is used to add thermal control.
Described electromagnetic heating temperature control system when work, has from adjusting pattern.The user can select for use when needed from the pattern of adjusting, and makes system seek best control parameter (sampling time, proportional gain Kp, the time of integration Ti, derivative time TD) automatically.Certainly adjusting at first, the user is made as 0 with the control cycle (sampling time) of PID in advance.Before adjusting certainly, current mensuration temperature and environment temperature must be consistent, just can reach the best effect of adjusting.The input filter constant has the sampled value of making and changes level and smooth effect, and its default value is 0%, represents not filtering.The differential gain belongs to the LPF link, has the output valve of mitigation effect jumpy, and its default value is 50%, increases this differential gain value and will make abirritation more obvious, and the general user need not to change.
The schematic diagram of in the process of adjusting, temperature being adjusted, as shown in Figure 9.Wherein ,+DIFF is the control temperature upper limit, and-DIFF is the control lowest temperature.After the beginning of adjusting, temperature changes according to shown in the curve, finishes the back temperature of adjusting and trends towards design temperature, does not need to adjust when starting heating once more again.
Claims (9)
1. electromagnetic temperature-control heat supply system is characterized in that: comprise thermoreceptor, electromagnetic heating temperature control system, and at least one radiator, wherein:
Described electromagnetic heating temperature control system comprises electromagnetic heating temperature control device, solenoid and temperature transducer;
Described solenoid is surrounded on described thermoreceptor outside, and links to each other with described electromagnetic heating temperature control device, and described electromagnetic heating temperature control device output AC high frequency electric produces alternating magnetic field and makes thermoreceptor produce eddy-current heating to described solenoid;
Described temperature transducer is located at described thermoreceptor inside, and link to each other with described electromagnetic heating temperature control device, be used to survey the thermoreceptor temperature inside, electromagnetic heating temperature control device is gathered the temperature value that temperature transducer records, and exchanging the output of high frequency electric according to this thermometric value adjustment, described adjustment comprises size or the control break-make of adjusting the output AC high frequency electric;
Described radiator links to each other with thermoreceptor with return pipe by water inlet pipe.
2. electromagnetic temperature-control heat supply system according to claim 1, it is characterized in that: described electromagnetic heating temperature control device comprises microprocessor module MCU, temperature detecting module, interchange high frequency output module, AC/DC ac-dc converter circuit module and power supply, wherein:
Described power supply is used to described electromagnetic heating temperature control device that electric energy is provided, and it is direct current that alternating current is inputed to described AC/DC ac-dc converter circuit module converts;
Described interchange high frequency output module under described microprocessor module MCU control, is converted to the required interchange high frequency electric of electromagnetism heating with direct current, and exports described solenoid to;
Described temperature detecting module is connected with temperature transducer on the thermoreceptor, is used to detect the thermometric value that obtains temperature transducer, and this thermometric value is fed back to described microprocessor module MCU;
Described microprocessor module MCU is according to the thermometric value that is received, and the output current size of described interchange high frequency output module is adjusted in control, perhaps adjusts whether stop or starting the output AC high frequency electric as required.
3. as electromagnetic temperature-control heat supply system as described in the claim 2, it is characterized in that: the alternating current of described power supply input is 220 volts 50 hertz a electric main; Described interchange high frequency output module, the high-frequency alternating current after direct current changed is the high-frequency alternating current of 18KHz to 30KHz.
4. as electromagnetic temperature-control heat supply system as described in the claim 2, it is characterized in that: described interchange high frequency output module is a pulse frequency modulated PFM control circuit.
5. as electromagnetic temperature-control heat supply system as described in the claim 2, it is characterized in that: described microprocessor module MCU is according to the thermometric value that is received, when the output current size of described interchange high frequency output module is adjusted in control, adopt the interchange high-frequency output voltage of directly adjusting interchange high frequency output module to realize, or adopt the resistance of directly adjusting power supply to cooperate AC/DC AC/DC modular converter to realize.
6. as electromagnetic temperature-control heat supply system as described in the claim 2, it is characterized in that: described microprocessor module MCU is according to the thermometric value that is received, the output current size of described interchange high frequency output module is adjusted in control, when realizing temperature control, adopt proportional-integral derivative controller PID mode, perhaps adopt from setting mode and carry out temperature control.
7. as electromagnetic temperature-control heat supply system as described in the claim 2, it is characterized in that: described electromagnetic heating temperature control device further comprises:
Touch-screen is used for whole heating temperature-control system being controlled by touch-screen for the user, and the user checks current heating-up temperature by interface input control parameter;
Programmable computer controller PCC is used for exporting the control information that the user imports by touch-screen to described microprocessor module MCU, realizes the control of user to whole temperature control system;
Warning circuit when temperature value reaches default alarm conditions, carries out alarm prompt to the user.
8. as electromagnetic temperature-control heat supply system as described in the claim 7, it is characterized in that: described touch-screen and programmable computer controller PPC dispose a DC power supplier, and the direct current of output 24V is to touch-screen and PPC module for power supply.
9. as electromagnetic temperature-control heat supply system as described in the claim 6, it is characterized in that: described electromagnetic heating temperature control device, adopting when setting mode carries out temperature control, when adjusting beginning certainly, the sampling time with PID is made as 0 in advance; Input filter constant default value is 0%; Differential gain default value is 50%.
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| CN101881480A (en) * | 2010-07-16 | 2010-11-10 | 辛海云 | Pipeline electromagnetic heating furnace |
| CN102012063A (en) * | 2010-11-30 | 2011-04-13 | 佛山市顺德区瑞德电子实业有限公司 | Household electromagnetic heating system |
| WO2012109811A1 (en) * | 2011-02-16 | 2012-08-23 | 大连理工大学 | Contactless heating method and apparatus for high temperature materials |
| CN103234236A (en) * | 2013-04-03 | 2013-08-07 | 张雷 | Device and method for automatically controlling temperature of indoor heater |
| CN104930589A (en) * | 2015-04-29 | 2015-09-23 | 浙江大学 | Community heating control system and method based on distributed sensing network |
| CN104964451A (en) * | 2015-06-26 | 2015-10-07 | 盂县晶辉机械制造有限公司 | Normal-pressure ultrasonic frequency heater |
| CN105737237A (en) * | 2016-03-16 | 2016-07-06 | 高诗白 | Household split type independent central heating system |
| CN108036394A (en) * | 2018-01-02 | 2018-05-15 | 董传勇 | Multifunction electromagnetic heating stove |
| CN108062122A (en) * | 2017-12-18 | 2018-05-22 | 武汉大学 | Internal memorial alloy electromagnetic heating temperature control system |
| CN108151134A (en) * | 2017-12-14 | 2018-06-12 | 珠海格力电器股份有限公司 | Heating equipment control method, device and heating equipment |
| CN109724191A (en) * | 2018-10-01 | 2019-05-07 | 国熠 | A kind of electric-control system of high frequency heat source machine |
| CN111226498A (en) * | 2017-08-10 | 2020-06-02 | 沃特洛电气制造公司 | System and method for controlling power to a heater |
| CN112383976A (en) * | 2020-11-27 | 2021-02-19 | 之江实验室 | High-frequency thermostat for heating alkali metal atom air chamber |
| CN112783235A (en) * | 2019-12-31 | 2021-05-11 | 湖北省地质局武汉水文地质工程地质大队 | Method, system and device for controlling temperature of underground pipe through water circulation based on pid algorithm |
| CN113696385A (en) * | 2021-08-18 | 2021-11-26 | 山东黄河三角洲纺织科技研究院有限公司 | Artificial blood vessel heat setting device |
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| CN101881480A (en) * | 2010-07-16 | 2010-11-10 | 辛海云 | Pipeline electromagnetic heating furnace |
| CN102012063A (en) * | 2010-11-30 | 2011-04-13 | 佛山市顺德区瑞德电子实业有限公司 | Household electromagnetic heating system |
| WO2012109811A1 (en) * | 2011-02-16 | 2012-08-23 | 大连理工大学 | Contactless heating method and apparatus for high temperature materials |
| CN103234236B (en) * | 2013-04-03 | 2016-04-27 | 张雷 | A kind of devices and methods therefor of household heater temperature automatic control |
| CN103234236A (en) * | 2013-04-03 | 2013-08-07 | 张雷 | Device and method for automatically controlling temperature of indoor heater |
| CN104930589B (en) * | 2015-04-29 | 2017-06-27 | 浙江大学 | Cell heating control system and method based on distributed sensor |
| CN104930589A (en) * | 2015-04-29 | 2015-09-23 | 浙江大学 | Community heating control system and method based on distributed sensing network |
| CN104964451A (en) * | 2015-06-26 | 2015-10-07 | 盂县晶辉机械制造有限公司 | Normal-pressure ultrasonic frequency heater |
| CN105737237A (en) * | 2016-03-16 | 2016-07-06 | 高诗白 | Household split type independent central heating system |
| CN105737237B (en) * | 2016-03-16 | 2019-03-19 | 高诗白 | A kind of split type separate central heating system of household |
| CN111226498A (en) * | 2017-08-10 | 2020-06-02 | 沃特洛电气制造公司 | System and method for controlling power to a heater |
| CN111226498B (en) * | 2017-08-10 | 2022-04-12 | 沃特洛电气制造公司 | System and method for controlling power to a heater |
| CN108151134A (en) * | 2017-12-14 | 2018-06-12 | 珠海格力电器股份有限公司 | Heating equipment control method, device and heating equipment |
| CN108062122A (en) * | 2017-12-18 | 2018-05-22 | 武汉大学 | Internal memorial alloy electromagnetic heating temperature control system |
| CN108036394A (en) * | 2018-01-02 | 2018-05-15 | 董传勇 | Multifunction electromagnetic heating stove |
| CN109724191A (en) * | 2018-10-01 | 2019-05-07 | 国熠 | A kind of electric-control system of high frequency heat source machine |
| CN112783235A (en) * | 2019-12-31 | 2021-05-11 | 湖北省地质局武汉水文地质工程地质大队 | Method, system and device for controlling temperature of underground pipe through water circulation based on pid algorithm |
| CN112383976A (en) * | 2020-11-27 | 2021-02-19 | 之江实验室 | High-frequency thermostat for heating alkali metal atom air chamber |
| CN113696385A (en) * | 2021-08-18 | 2021-11-26 | 山东黄河三角洲纺织科技研究院有限公司 | Artificial blood vessel heat setting device |
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Open date: 20100609 |