CN102480213B - Heat abstractor, including its converter and inverter air conditioner - Google Patents
Heat abstractor, including its converter and inverter air conditioner Download PDFInfo
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- CN102480213B CN102480213B CN201010555469.3A CN201010555469A CN102480213B CN 102480213 B CN102480213 B CN 102480213B CN 201010555469 A CN201010555469 A CN 201010555469A CN 102480213 B CN102480213 B CN 102480213B
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- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 20
- 239000003507 refrigerant Substances 0.000 claims description 17
- 238000001704 evaporation Methods 0.000 claims description 15
- 241000761557 Lamina Species 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 6
- 239000000084 colloidal system Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 9
- 230000005855 radiation Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 238000004378 air conditioning Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention provides a heat dissipation device, a frequency converter and a variable frequency air conditioner, the heat dissipation device comprises a heat exchanger (1), an inlet end (11) and an outlet end (12) are arranged on the heat exchanger (1), and a heat dissipation pipeline arranged between the inlet end (11) and the outlet end (12) is arranged in the heat exchanger (1). The heat dissipation device greatly reduces the volume of the heat dissipation sheet, effectively improves the heat dissipation efficiency, reduces the heat dissipation cost, and improves the safety and the stability of the frequency converter module. The frequency converter comprises a circuit control system, wherein the circuit control system is controlled by a frequency converter main board and comprises an electromagnetic valve (4) connected with an inlet end (11) of a heat exchanger. The variable frequency air conditioner ensures that the frequency converter module always operates in a reasonable temperature range, thereby achieving the purpose of protecting the stable and reliable operation of the frequency converter.
Description
Technical field
The present invention relates to field of air conditioning, specifically, relate to a kind of heat abstractor, comprise its frequency converter and convertible frequency air-conditioner.
Background technology
Frequency converter module plays the effect of a power transfer and amplification in whole frequency converter, wherein due to the resistance of switching loss and module itself, in its course of work, can produce heat, and the power of the assembling unit corresponding to frequency converter is larger, caloric value is larger, if these heats shed not in time, can affect module performance and even burn out module, therefore, frequency converter module heat dissipating problem is the key point of Design of Inverter always.
The conventional radiating mode of frequency converter module mainly contains fan forced convection heat radiation, fin heat loss through radiation, radiating tube heat radiation etc. at present.And in air-conditioning products, using maximum is the mode of fin heat loss through radiation, this radiating mode passes to fin by the heat of frequency converter module together with frequency converter module is adjacent to fin, good heat-conductive characteristic by fin is gone out dissipation of heat, with this, expand the area of dissipation of frequency converter module, improve the radiating efficiency of frequency converter module.But because this radiating mode depends primarily on the heat conduction property of fin itself and the area of dissipation of fin, in frequency converter, the area of fin is restricted, and this has also seriously restricted the effect of fin heat radiation.
On convertible frequency air-conditioner, in order to improve frequency converter heat dispersion, often need a relatively large fin of volume to be arranged in unit, taken the design space of unit, also caused the inconvenience of installation and maintenance.In use, if frequency converter module heating amount is excessive, exceeded fin heat mass rate of emission, be difficult to the heat radiation of frequency converter module effectively to adjust, made within the temperature of frequency converter module remains on a rational scope.If thermal accumlation is too much, be easy to burn out frequency converter module, in order to protect frequency converter module, often need to shut down heat radiation, for the use of air-conditioning, caused a lot of inconvenience.
Summary of the invention
The present invention aims to provide a kind of heat abstractor, make the frequency converter module in convertible frequency air-conditioner also can there is good radiating effect without large fin, effectively improve radiating efficiency, reduced heat radiation cost, improved safety in utilization and the stability of frequency converter module.
To achieve these goals, according to an aspect of the present invention, provide a kind of heat abstractor, comprised heat exchanger, on heat exchanger, be provided with entrance point and the port of export, and in heat exchanger, there is the hot channel being arranged between entrance point and the port of export.
Further, heat abstractor also comprises metallic laminas, and the heat-transfer surface that metallic laminas is close to heat exchanger is fixedly installed.
According to a further aspect in the invention, provide a kind of frequency converter, comprised frequency converter mainboard and frequency converter module, also comprised above-mentioned any one heat abstractor, the surface that heat abstractor is close to frequency converter module arranges.
Further, between heat abstractor and frequency converter module, be coated with heat conduction colloid.
Further, frequency converter also comprises a circuit control system, and circuit control system is controlled by frequency converter mainboard, comprises an electromagnetically operated valve that is connected to heat exchanger entrance point.
Further, circuit control system also comprises a temperature sensor being connected in frequency converter module, and the temperature information that circuit control system transmits according to temperature sensor is controlled the keying of electromagnetically operated valve.
According to a further aspect in the invention, provide a kind of convertible frequency air-conditioner, had refrigerating circuit, also comprised any one above-mentioned heat abstractor, the heat exchanger of heat abstractor is arranged in refrigerating circuit.
Further, convertible frequency air-conditioner comprises compressional zone, the two ends of compressional zone are connected on two ports of cross valve, on two other port of cross valve, connect respectively condensing zone and evaporating area, between condensing zone and evaporating area, be provided with breathing space, the entrance point of the heat exchanger of heat abstractor is connected on the connecting line between condensing zone and breathing space, and the port of export of heat exchanger is connected on the pipeline of suction end of compressional zone.
Further, the entrance point of heat exchanger is connected on the connecting line between condensing zone and breathing space by electromagnetically operated valve.
In accordance with a further aspect of the present invention, a kind of convertible frequency air-conditioner is provided, comprise compressional zone, the two ends of compressional zone are connected on two ports of cross valve, on two other port of cross valve, connect respectively condensing zone and evaporating area, between condensing zone and evaporating area, be provided with breathing space, the entrance point of the heat exchanger of heat abstractor is connected on the connecting line between condensing zone and breathing space, and the port of export of heat exchanger is connected on the pipeline of suction end of compressional zone.
According to heat abstractor of the present invention, comprise and there is the heat exchanger that is arranged on the hot channel between entrance point and the port of export, make the frequency converter module in convertible frequency air-conditioner also can there is good radiating effect without large fin, effectively improved radiating efficiency, reduce heat radiation cost, improved the safety in utilization of frequency converter module.According to frequency converter of the present invention, can the interface of heat abstractor be opened and closed and be controlled by circuit control system, increased the use flexibility of heat abstractor, improved the adaptedness of heat abstractor to environment.According to convertible frequency air-conditioner of the present invention, the feature of utilizing refrigerant flow regime to change, makes small part liquid refrigerants flow through heat exchanger, has effectively improved the radiating efficiency of heat abstractor, has strengthened the job stability of convertible frequency air-conditioner.
Accompanying drawing explanation
Figure of description is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The perspective view of the frequency converter that Fig. 1 shows heat abstractor according to an embodiment of the invention and comprises it;
Fig. 2 shows the working state structure schematic diagram of convertible frequency air-conditioner according to an embodiment of the invention; And
Fig. 3 shows converter circuit control system solenoid control flow chart according to an embodiment of the invention.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As shown in Figure 1, according to heat abstractor of the present invention, comprise heat exchanger 1, on heat exchanger 1, be provided with entrance point 11 and the port of export 12, and in heat exchanger 1, there is the hot channel being arranged between entrance point 11 and the port of export 12.Hot channel between two ports, can beeline channel, can be also curved channel, preferably, this heat dissipation channel spreads all in whole heat abstractor, like this, if pass into extraneous heat radiation medium, can make the radiating effect of this heat abstractor be fully played, effectively improved radiating efficiency.Entrance point 11 and the port of export 12 can be arranged on the side of heat exchanger 1, on entrance point 11 and the port of export 12, all there is dismountable connector, this connector for the external world be connected with heat radiation medium pipe joint be connected, because connector is detachable, therefore, can select different connectors according to different application scenarios.Because this heat abstractor is mainly that heat radiation medium by flowing through is wherein taken away heat, therefore, it is very little that the volume of this heat abstractor can become, and is more conducive to dissipation of heat to be gone out.
Because the heat-transfer surface shape majority of heat exchanger 1 is irregular, in order to make heat abstractor have better heat transfer effect, heat abstractor also comprises is close to the metallic laminas 2 that the heat-transfer surface of heat exchanger 1 is fixedly installed.Metallic laminas 2 can be welded on heat exchanger 1, also can be fixedly installed on heat exchanger 1 by alternate manner, such as bonding etc., to guarantee contactless thermal resistance between metallic laminas 2 and heat exchanger 1.Because metallic laminas 2 has smooth smooth surface, and be close to heat exchanger 1 setting, in the time of on heat abstractor being arranged on to the module that needs heat radiation, can carry out more quickly and effectively heat exchange, waste heat is distributed, thereby form effectively, protect.
According to the embodiment of frequency converter of the present invention, comprise frequency converter mainboard 3 and frequency converter module 31, also comprise any one above-mentioned heat abstractor, the surface that this heat abstractor is close to frequency converter module 31 arranges.In order to increase the contact area of heat abstractor and frequency converter module, improve the radiating effect of heat abstractor, between heat abstractor and frequency converter module 31, be coated with heat conduction colloid.
In the present embodiment, frequency converter also comprises a circuit control system, and circuit control system is controlled by frequency converter mainboard, comprises an electromagnetically operated valve 4 that is connected to heat exchanger entrance point 11.Circuit control system also comprises a temperature sensor being connected in frequency converter module 31, and circuit control system is controlled the keying of electromagnetically operated valve 4 according to the temperature of temperature sensor.Under the control of humidity control system, the medium of choice for use heat radiation according to actual needs dispels the heat, or only use heat abstractor itself to dispel the heat, improved on the one hand the on-the-spot applicability of heat abstractor, can need to select appropriate mode according to scene; On the other hand, improve the radiating efficiency of heat abstractor, saved the energy.
Embodiment according to convertible frequency air-conditioner of the present invention, has refrigerating circuit, also comprises above-mentioned any one heat abstractor, and the heat exchanger 1 of heat abstractor is arranged in refrigerating circuit.Preferably, convertible frequency air-conditioner comprises compressional zone 5, the two ends of compressional zone 5 are connected on two ports of cross valve 9, on two other port of cross valve 9, connect respectively condensing zone 6 and evaporating area 8, between condensing zone 6 and evaporating area 8, be provided with breathing space 7, the entrance point 11 of the heat exchanger 1 of heat abstractor is connected on the connecting line between condensing zone 6 and breathing space 7, and the port of export 12 of heat exchanger 1 is connected on the pipeline of suction end of compressional zone 5.More preferably, the entrance point 11 of heat exchanger 1 is connected on the connecting line between condensing zone 6 and breathing space 7 by electromagnetically operated valve 4.
As shown in Figure 2, according to the another embodiment of convertible frequency air-conditioner of the present invention, comprise compressional zone 5, the two ends of compressional zone 5 are connected on two ports of cross valve 9, on two other port of cross valve 9, connect respectively condensing zone 6 and evaporating area 8, between condensing zone 6 and evaporating area 8, be provided with breathing space 7, convertible frequency air-conditioner also comprises above-mentioned any one frequency converter, the entrance point 11 of the heat exchanger 1 of the heat abstractor in frequency converter is connected on the connecting line between condensing zone 6 and described breathing space 7 by electromagnetically operated valve 4, the port of export 12 of heat exchanger 1 is connected on the pipeline of suction end of compressional zone 5.
Because air-conditioning system is to utilize the state variation of coolant media to carry out heat transmission; in cyclic process, there is the liquid condition stage of one section of low temperature in refrigerant; therefore can utilize the refrigerant of this liquid condition to carry out heat exchange by heat exchanger 1 and the frequency converter module 31 of heat abstractor of the present invention; reach the object of rapid stable reduction frequency converter module 31 temperature; in long-time running, can guarantee that module operates in a proper temperature range always; with this, protect frequency converter module 31, greatly strengthen operation stability and the reliability of frequency converter.
In the operation process of convertible frequency air-conditioner, if freeze, the liquid freon of the freon of gaseous state boil down to HTHP in compressional zone 5, then deliver to the liquid freon that becomes normal temperature high voltage after dispelling the heat in condensing zone 6, then enter breathing space 7, after the liquid freon of normal temperature high voltage enters evaporating area 8 by breathing space 7, because space increases suddenly, pressure diminishes, liquid freon will gas China, become the freon of gaseous state low temperature, thereby absorb a large amount of heats, evaporating area will turn cold, thereby absorption amount of heat, indoor temperature is reduced, then the freon of gaseous state is got back to compressional zone 5 continuation compressions, continue circulation.
If heat, whole process is just in time contrary.
Therefore, in order to realize the efficiently radiates heat of heat abstractor, the entrance point 11 of heat exchanger 1 is connected on the connecting line between condensing zone 6 and breathing space 7, and the port of export 12 of heat exchanger 1 is connected on the pipeline of suction end of compressional zone 5.Under refrigeration mode, refrigerant is flowed through from compressor after condenser, the liquid that refrigerant state is cryogenic high pressure, if now module temperature reaches electromagnetically operated valve unlocking condition, the refrigerant of cryogenic high pressure, through electromagnetically operated valve 4 radiator of flowing through, carries out heat exchange with frequency converter module 31, reduces module temperature.
Under heating mode, refrigerant is flowed through from compressional zone 5 after evaporating area 8, again through breathing space 7, the vapour-liquid two-phase mixture that now refrigerant state is low-temp low-pressure, when module temperature reaches electromagnetically operated valve unlocking condition, the refrigerant of low-temp low-pressure, through electromagnetically operated valve 4 radiator of flowing through, carries out heat exchange with frequency converter module 31, reduces module temperature.Because the port of export 12 of heat exchanger 1 is connected on the pipeline of suction end of compressional zone 5, air is herein all the time in negative pressure state, can guarantee low temperature refrigerant on the connecting line between condensing zone 6 and breathing space 7 heat abstractor of flowing through all the time, guarantee the radiating effect of heat abstractor.
According to the embodiment of convertible frequency air-conditioner of the present invention, it is mainly the heat exchanger with inner passage 1 that utilizes a fritter high efficient heat exchanging, the feature changing in conjunction with refrigerant flow regime in air-conditioning system, make small part liquid refrigerants flow through heat exchanger 1, by heat exchanger 1 and frequency converter module 31, carry out exchange heat, frequency converter module is close in the metallic laminas 2 welding together with heat exchanger 1, and heat exchanger 1 two ends are connected with air conditioner coolant system by pipeline.The degree of impact on overall performance simultaneously causing because the refrigerant in air-conditioning system needs bypass sub-fraction process heat exchanger 1 to carry out heat exchange with frequency converter module 31 in order to reduce as far as possible, on the pipeline of heat exchanger 1 entrance point 11, be also provided with a Minitype electromagnetic valve 4, this valve is connected with frequency converter mainboard 3, controlled by mainboard and opens and close.As shown in Figure 3, Modular surface is provided with a temperature sensor, frequency converter mainboard 3 can detect frequency converter module 31 surface temperatures and the control signal to electromagnetically operated valve 4 according to Internal Control Procedure output by this temperature sensor, when if detected temperatures limits by the definite higher temperature of test over one, electromagnetically operated valve 4 is opened, high pressure low temperature refrigerant carries out exchange heat from system flow through heat exchanger 1 and frequency converter module 31, reduces module temperature and module temperature is stabilized in suitable temperature range gradually.If detected temperatures value is lower than one during by the definite lower temperature limit value of test, representation module self-temperature is lower, and without extra heat dissipation, electromagnetically operated valve 4 cuts out, without the refrigerant heat exchanger of flowing through.If when detected temperatures value changes between lower temperature restriction and higher temperature restriction, 4 of electromagnetically operated valves keep original running status.So guarantee that module always operates in a rational temperature range, reaches the object of the reliable and stable operation of protection frequency converter.
The switch of electromagnetically operated valve is specifically by following logic operation:
1, when detection module temperature is greater than 80 while spending, electromagnetically operated valve is opened;
2,, when detection module temperature is greater than 60 degree, be less than or equal to 80 while spending, the state before electromagnetically operated valve keeps;
3, when detection module temperature is less than or equal to 60 while spending, closed electromagnetic valve.
So, just can guarantee that frequency converter module works all the time in the temperature range of a safety, improve the fail safe of frequency converter module, thereby improved radiating efficiency and the job stability of convertible frequency air-conditioner.
From above description, can find out, the above embodiments of the present invention have realized following technique effect: make the frequency converter module in convertible frequency air-conditioner also can have good radiating effect without large fin, and can select suitable operating state according to the working temperature of frequency converter module, effectively improved radiating efficiency, reduce the adverse effect for overall performance, reduced heat radiation cost, improved safety in utilization and the stability of frequency converter module.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a frequency converter, comprise frequency converter mainboard (3) and frequency converter module (31), it is characterized in that, also comprise heat abstractor, the surface that described heat abstractor is close to described frequency converter module (31) arranges, described heat abstractor comprises heat exchanger (1), on described heat exchanger (1), be provided with entrance point (11) and the port of export (12), and in described heat exchanger (1), there is the hot channel being arranged between described entrance point (11) and the described port of export (12), described frequency converter also comprises a circuit control system, described circuit control system is controlled by frequency converter mainboard, comprise an electromagnetically operated valve (4) that is connected to described heat exchanger entrance point (11), described electromagnetically operated valve (4) is opened or closed by described frequency converter mainboard (3) control, to control whether flow into refrigerant in described hot channel.
2. frequency converter according to claim 1, is characterized in that, described heat abstractor also comprises metallic laminas (2), and the heat-transfer surface that described metallic laminas (2) is close to described heat exchanger (1) is fixedly installed.
3. frequency converter according to claim 2, is characterized in that, between described heat abstractor and described frequency converter module (31), is coated with heat conduction colloid.
4. frequency converter according to claim 1, it is characterized in that, described circuit control system also comprises a temperature sensor being connected in described frequency converter module (31), and described circuit control system is controlled the keying of described electromagnetically operated valve (4) according to the temperature information of described temperature sensor transmission.
5. a convertible frequency air-conditioner, has refrigerating circuit, it is characterized in that, also comprises the frequency converter described in any one in claim 1 to 4, and the heat exchanger of the described heat abstractor of described frequency converter (1) is arranged in described refrigerating circuit.
6. convertible frequency air-conditioner according to claim 5, it is characterized in that, comprise compressional zone (5), the two ends of described compressional zone (5) are connected on two ports of cross valve (9), on two other port of described cross valve (9), connect respectively condensing zone (6) and evaporating area (8), between described condensing zone (6) and described evaporating area (8), be provided with breathing space (7), the entrance point (11) of the heat exchanger of described heat abstractor (1) is connected on the connecting line between described condensing zone (6) and described breathing space (7), the port of export (12) of described heat exchanger (1) is connected on the pipeline of suction end of described compressional zone (5).
7. convertible frequency air-conditioner according to claim 6, is characterized in that, the entrance point (11) of described heat exchanger (1) is connected on the described connecting line between described condensing zone (6) and described breathing space (7) by electromagnetically operated valve (4).
8. a convertible frequency air-conditioner, comprise compressional zone (5), the two ends of described compressional zone (5) are connected on two ports of cross valve (9), on two other port of described cross valve (9), connect respectively condensing zone (6) and evaporating area (8), between described condensing zone (6) and described evaporating area (8), be provided with breathing space (7), it is characterized in that, also comprise the frequency converter described in any one in claim 1 to 4, the entrance point (11) of the heat exchanger of the heat abstractor in described frequency converter (1) is connected on the connecting line between described condensing zone (6) and described breathing space (7) by described electromagnetically operated valve (4), the port of export (12) of described heat exchanger (1) is connected on the pipeline of suction end of described compressional zone (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555469.3A CN102480213B (en) | 2010-11-22 | 2010-11-22 | Heat abstractor, including its converter and inverter air conditioner |
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| CN201010555469.3A CN102480213B (en) | 2010-11-22 | 2010-11-22 | Heat abstractor, including its converter and inverter air conditioner |
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| CN102480213A CN102480213A (en) | 2012-05-30 |
| CN102480213B true CN102480213B (en) | 2014-04-09 |
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| CN104613556A (en) * | 2013-11-04 | 2015-05-13 | 珠海格力电器股份有限公司 | Heat dissipation device of electrical element and air conditioner with same |
| CN104713204B (en) * | 2013-12-11 | 2018-06-01 | 珠海格力电器股份有限公司 | air conditioning unit and control method |
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| CN105953318A (en) * | 2016-06-17 | 2016-09-21 | 珠海格力电器股份有限公司 | Heat dissipation device of air conditioner controller and air conditioning equipment |
| CN107548262A (en) * | 2016-06-29 | 2018-01-05 | 青岛海尔智能技术研发有限公司 | The heat abstractor and transducer air conditioning of air conditioning frequency converter |
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| CN109392289A (en) * | 2018-09-04 | 2019-02-26 | 珠海格力电器股份有限公司 | Frequency conversion air supplement and enthalpy increase system, frequency converter cooling method and equipment |
| CN112902487A (en) * | 2019-12-03 | 2021-06-04 | 杭州三花微通道换热器有限公司 | Refrigeration system |
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| CN102480213A (en) | 2012-05-30 |
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