CN210663104U - Radiator, air condensing units and air conditioner - Google Patents

Abstract

The application relates to a radiator, an air conditioner outdoor unit and an air conditioner. The radiator comprises a first radiating component, a second radiating component, a first working medium pipeline, a first pipeline part and a second pipeline part, wherein the first radiating component is internally provided with the first working medium pipeline; the first working medium pipeline and the second working medium pipeline are connected with a first pipeline part and a second pipeline part respectively to form a working medium loop, the working medium loop is set to be filled with heat exchange working media, and the second working medium pipeline comprises one or more capillary sections.

Description

Radiator, air condensing units and air conditioner

Technical Field

The present application relates to the field of heat dissipation technologies, and for example, to a heat sink, an outdoor unit of an air conditioner, and an air conditioner.

Background

The frequency conversion module is an important component in the frequency conversion air conditioner, and the heat dissipation problem of the frequency conversion module is closely related to the reliability of the air conditioner. The higher the frequency of the compressor is, the more the frequency conversion module generates heat, and secondly, the chip design is more compact, the density of components is continuously increased, and the volume of the components tends to be miniaturized, so that the heat dissipation of the frequency conversion module is more and more difficult.

At present, an extruded section radiator is generally adopted for radiating heat of a frequency conversion module of an outdoor unit of an air conditioner, and the radiator is optimized by changing the area and the shape of a radiating fin.

In the process of implementing the embodiments of the present disclosure, the following problems are found in the related art: the existing radiator still can not effectively radiate the frequency conversion module, particularly under high ambient temperature, the temperature of the frequency conversion module is sharply increased, the radiating capacity of the radiator is limited, and the reliability of the air conditioner is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

According to a first aspect of embodiments of the present disclosure, a heat sink is provided.

In some optional embodiments, the heat sink comprises: the first heat dissipation component is internally provided with a first working medium pipeline, the second heat dissipation component is internally provided with a second working medium pipeline, a first pipeline part and a second pipeline part; the first pipeline part and the second pipeline part are connected between the first working medium pipeline and the second working medium pipeline respectively to form a working medium loop, the working medium loop is set to be filled with heat exchange working media, and the second working medium pipeline comprises one or more capillary sections.

According to a second aspect of the embodiments of the present disclosure, there is provided an outdoor unit of an air conditioner.

In some optional embodiments, the outdoor unit of the air conditioner includes the radiator as described above.

According to a third aspect of the embodiments of the present disclosure, there is provided an air conditioner.

In some optional embodiments, the air conditioner comprises an outdoor unit of the air conditioner as described above.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the radiator provided by the embodiment of the disclosure comprises a first radiating component and a second radiating component, wherein the two radiating components can simultaneously radiate heat generated by an object to be radiated, so that the radiating effect of the radiator is improved; the capillary section has the functions of cooling and reducing pressure, and can cool the heat exchange working medium passing through the second heat dissipation member for the second time, so that the heat dissipation capacity of the heat radiator is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of a heat sink provided in an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a first heat dissipation member according to an embodiment of the present disclosure;

fig. 3 is another schematic structural diagram of a first heat dissipation member according to an embodiment of the disclosure;

fig. 4 is a schematic structural diagram of a second heat dissipation member according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of an installation position of a heat sink in an outdoor unit of an air conditioner according to an embodiment of the present disclosure.

Reference numerals:

1: a first heat dissipating member; 2, a second heat dissipation member; 3: a first pipe section; 4: a second pipe section; 5, a fan; 6, a frequency conversion module; 7, a fan bracket; 11, a first working medium pipeline; 12, radiating fins; 13, connecting holes; 21, a heat dissipation pipe section; 22, a capillary section; 111 heat conduction pipe section; 112, a first bus pipe section; 113, a second bus-bar section; 114 a first port; 115: a second port; 116, a first end tooling hole; 117 second end tooling holes; 211, a first communication end; 212, a second communication end; 213, a third communication end; 214, fourth communication port.

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like, herein are used solely to distinguish one element from another without requiring or implying any actual such relationship or order between such elements. In practice, a first element can also be referred to as a second element, and vice versa. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a structure, device or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations and positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate.

Herein, the term "plurality" means two or more, unless otherwise specified.

The disclosed embodiment provides a heat sink.

The radiator that this disclosed embodiment provided includes: the first heat dissipation component is internally provided with a first working medium pipeline, the second heat dissipation component is internally provided with a second working medium pipeline, a first pipeline part and a second pipeline part; the first working medium pipeline and the second working medium pipeline are connected with a first pipeline part and a second pipeline part respectively to form a working medium loop, the working medium loop is set to be filled with heat exchange working media, and the second working medium pipeline comprises one or more capillary sections.

Optionally, as shown in fig. 1, the heat sink provided in the embodiment of the present disclosure includes a first heat dissipation member 1 and a second heat dissipation member 2, wherein a first working medium pipeline 11 is disposed inside the first heat dissipation member 1, a second working medium pipeline is disposed inside the second heat dissipation member 2, the first working medium pipeline 11 and the second working medium pipeline are communicated by a first pipeline portion 3 and a second pipeline portion 4 to form a working medium loop, and optionally, a path of the working medium loop is the first working medium pipeline 11, the first pipeline portion 3, the second working medium pipeline, and the second pipeline portion 4 in sequence, and then returns to the first working medium pipeline 11 from the second pipeline portion 4 to complete a working medium cycle. Optionally, the outer diameter of the first pipeline portion 3 may be 6-9mm, and the thickness of the pipe wall may be 1-1.5mm, or the outer diameter of the second pipeline portion 4 may also be 6-9mm, and the thickness of the pipe wall may be 1-1.5 mm. Optionally, the first pipeline portion 3 and the second pipeline portion 4 may be flexible pipelines, and the material of the flexible pipelines may be plastic.

Alternatively, the second heat radiation member 2 has a first external port communicating with the first pipe portion 3, or the second heat radiation member 2 has a second external port communicating with the second pipe portion 4; optionally, the first external connection port has an internal diameter that is the same as the internal diameter of the first tubing part 3, or the second external connection port has an internal diameter that is the same as the internal diameter of the second tubing part 4. The second radiator element 2 can be brought into communication with the first and second pipe portions 3, 4, whatever the connection.

In the heat sink provided by the embodiment of the present disclosure, the second working medium pipeline includes one or more capillary segments 22. The capillary tube section 22 increases the pressure in the working medium loop, is beneficial to the circulation flow of the heat exchange working medium in the working medium loop, and improves the fluidity and the flow rate of the heat exchange working medium in the working medium loop, for example, the self-circulation flow of the heat exchange working medium in the working medium loop can be realized under the non-vacuum condition of the working medium loop; or, under the condition that the first heat dissipation member 1 and the second heat dissipation member 2 are positioned on the same horizontal plane, the self-circulation flow of the heat exchange working medium in the working medium loop can be realized; in the second aspect, the capillary segment 22 has the function of reducing temperature and pressure, and can reduce the temperature of the heat exchange working medium passing through the second heat dissipation member 2 for the second time, thereby improving the heat dissipation effect of the heat sink. Optionally, the capillary segment 22 is in direct communication with the second tubing part 4.

Optionally, the number of the capillary sections may be more than one, and more than one capillary sections may be arranged in series on the second working medium pipeline; alternatively, more than one capillary segment may be arranged in parallel on the second working fluid line. Whether in series or parallel, more than one capillary segment may be normally connected to the second tubing part 4.

In the radiator provided by the embodiment of the disclosure, the working medium loop is filled with the heat exchange working medium, and the heat exchange working medium can be a phase change working medium capable of performing phase change. Optionally, the heat exchange working medium here may be an electronic fluorinated liquid. Optionally, the heat exchange working medium can be poured into the working medium loop without vacuumizing the working medium loop. Optionally, the filling amount of the heat exchange working medium in the working medium loop is not specifically limited in the embodiments of the present disclosure.

Alternatively, the first heat dissipation member 1 may also be referred to as an evaporation end, the second heat dissipation member 2 may also be referred to as a condensation end, the first pipe portion 3 may also be referred to as a gas pipe, and the second pipe portion 4 may also be referred to as a liquid pipe. The heat dissipation process of heat dissipation by using the heat sink provided by the embodiment of the present disclosure can be described as follows: the first heat dissipation member 1 serves as an evaporation end and is in heat conduction contact with an object to be dissipated, after receiving heat, the liquid heat exchange working medium in the first heat dissipation member 1 is heated and turns into a gas state and takes away heat which is not dissipated, the gas heat exchange working medium enters the second heat dissipation member 2 through the gas pipeline 3, the second heat dissipation member 2 serves as a condensation end and dissipates the heat of the gas working medium, and after the heat is dissipated, the gas heat exchange working medium turns into a liquid state and flows back to the first heat dissipation member 1 through the liquid pipeline 4 to perform the next heat dissipation cycle.

Optionally, the first pipeline part 3 comprises one or more first pipelines, optionally, when the first pipeline part 3 comprises more than one first pipeline, two ends of the more than one first pipeline converge, and convergence ports at the two ends are respectively communicated with the first working medium pipeline and the second working medium pipeline; optionally, the second pipeline part 4 comprises one or more second pipelines, optionally, when the second pipeline part 4 comprises more than one second pipeline, the two ends of the more than one second pipeline converge, and the converging ports at the two ends are respectively communicated with the first working medium pipeline and the second working medium pipeline.

The frequency conversion module of the air conditioner outdoor unit is provided with a plurality of high-power components, and along with the miniaturization of the air conditioner outdoor unit and the requirement of the diversification of the functions of the air conditioner, the chip design of the electric control module of the air conditioner outdoor unit is more compact, the density of the components is continuously increased, and the volume of the components tends to be miniaturized. Therefore, the heat generation power consumption of the high-power component is increased more and more, and the heat flux density is increased sharply. Optionally, when the radiator provided by the embodiment of the disclosure is used for radiating the frequency conversion module of the air conditioner, heat generated by the frequency conversion module can be effectively dissipated. For example, the heat dissipation capability of the heat sink provided by the embodiments of the present disclosure is represented by: when the ambient temperature is 52 ℃, the shell temperature of the high-power component is ninety degrees centigrade or more, even more than 100 ℃, when the existing radiator is used for radiating, the radiator provided by the embodiment of the disclosure is used for cooling the frequency conversion module, and when the ambient temperature is 52 ℃, the shell temperature of the high-power component is 72-82 ℃. Therefore, compared with the existing radiator, the radiator provided by the embodiment of the disclosure reduces the temperature of the high-power component by 20-25 ℃, so that the frequency conversion module can run smoothly, and the running reliability of the air conditioner is improved.

Optionally, in the radiator provided by the embodiment of the present disclosure, the second working medium pipeline further includes a heat dissipation pipe section 21, the heat dissipation pipe section 21 is communicated with the second pipeline portion 4 through a capillary pipe section 22, and optionally, the heat dissipation pipe section 21 may be described as a non-capillary pipe section. Optionally, the second working medium pipeline includes a heat dissipation pipe section 21 and a capillary pipe section 22, where the capillary pipe section 22 is located at one end of the second working medium pipeline connected to the second pipeline part 4, which is beneficial to the circulation flow of the heat exchange working medium in the working medium loop, and improves the heat dissipation efficiency of the heat sink. The capillary section 22 is arranged at the connecting part of the second working medium pipeline and the second pipeline part 4, after the heat exchange working medium in the first heat dissipation component 1 is heated and vaporized, the pressure of the second pipeline part 4 is higher, and the heat exchange working medium cannot flow into the second heat dissipation component 2 through the second pipeline part 4, so that the first pipeline part 3 is selected to flow into the second heat dissipation component 2, and the self-circulation flow of the heat exchange working medium in the working medium loop is facilitated. Alternatively, the position of capillary segment 22 in the second working fluid line may be as shown in fig. 1. Alternatively, the length of the capillary segment 22 may be 40-200 mm. Optionally, the ratio of the inner diameter of the capillary section 22 to the inner diameter of the heat dissipation section 21 is 1:3 to 1: 5. Optionally, the second heat dissipation member 2 is formed by laminating two layers of aluminum plates. Optionally, the heat dissipation tube section 21 and the capillary tube section 22 of the second working medium line are integrally formed.

Optionally, in the heat sink provided by the embodiment of the present disclosure, the first heat dissipation member 1 includes a first heat dissipation base, and the first working medium pipeline 11 is formed in the first heat dissipation base, so that thermal contact resistance is reduced, and heat dissipation capability of the first heat dissipation member is improved. Optionally, the first heat dissipation base and the first working medium pipeline 11 inside the first heat dissipation base are integrally formed, for example, the first heat dissipation member may be prepared by an extrusion forming preparation method. Optionally, the first heat dissipation substrate may be in a block shape and have six surfaces, and when the object to be dissipated is a frequency conversion module of an air conditioner, the first surface of the first heat dissipation substrate is in heat-conducting contact with the frequency conversion module of the air conditioner. Optionally, the first heat dissipation substrate may be made of an aluminum alloy. Optionally, the first heat dissipation member 1 may be in heat-conducting contact with the object to be dissipated by coating heat-conducting silicone grease or attaching a heat-conducting sheet, so as to reduce the thermal contact resistance of the contact portion between the first heat dissipation member 1 and the object to be dissipated.

Optionally, the first working medium pipeline includes a plurality of heat conduction pipe sections, a first confluence pipe section and a second confluence pipe section, the first confluence pipe section is communicated with the first ends of the plurality of heat conduction pipe sections, and the second confluence pipe section is communicated with the second ends of the plurality of heat conduction pipe sections. In order to reduce the thermal contact resistance of the first heat dissipating component, a plurality of heat conducting pipe sections 111 are arranged in first working medium pipe 11, as shown in fig. 2. The "first end" here is a set of ports of the plurality of heat transfer pipe segments, and similarly, the "second end" here is a set of another ports of the plurality of heat transfer pipe segments. Alternatively, the plurality of heat conduction pipe segments 111 are arranged in parallel side by side, the first bus-bar segment 112 intersects with the first ends of the plurality of heat conduction pipe segments 111, and the second bus-bar segment 113 intersects with the second ends of the plurality of heat conduction pipe segments 111, where the intersection may be a perpendicular intersection.

Optionally, a first heat dissipation member blank including the plurality of heat conduction pipe segments 111, the first bus bar segment 112, and the second bus bar segment 113 is prepared by a direct extrusion molding preparation method, in the prepared first heat dissipation member blank, the plurality of heat conduction pipe segments 111 are through holes with openings at two ends, where the openings may be as shown in fig. 3 as a first end process hole 116 and a second end process hole 117, and the first end process hole 116 and the second end process hole 117 are sealed, so as to obtain the first heat dissipation member 1. Optionally, the distances between the plurality of heat transfer segments 111 are unequal. In the first heat dissipation member blank, two ends of the plurality of heat conduction pipe segments 111 extend to a third surface and a fourth surface of the first heat dissipation base, respectively, and the third surface and the fourth surface are arranged oppositely.

Optionally, the first bus bar segment 112 is provided with a first port 114 communicating with the first line portion 3 and the second bus bar segment 113 is provided with a second port 115 communicating with the second line portion 4. As shown in fig. 2, the first port 114 and the second port 115 are respectively located at two ends of the same surface of the first heat dissipating substrate. Optionally, the first port 114 and the second port 115 are both located on the fifth surface of the first heat dissipating substrate.

Optionally, the surface of the first heat dissipation base of the heat sink provided by the embodiment of the present disclosure is further provided with heat dissipation fins 12. The first heat dissipation substrate and the heat dissipation fins 12 can be prepared by a direct extrusion forming preparation method, and the material can be aluminum alloy. The number of the heat radiation fins 12 is not particularly limited in the embodiments of the present disclosure. Alternatively, the pitches of the plurality of heat dissipation fins 12 may not be equal. The plurality of radiating fins 12 are arranged on the second surface of the first radiating base body, the second surface is arranged opposite to the first surface, optionally, the radiating fins 12 are perpendicular to the second surface of the first radiating base body, the perpendicular distance from the free ends of the radiating fins 12 to the second surface is 30-20mm, and the thickness of the radiating fins 12 is 1.5 mm.

Alternatively, the surface of the first heat dissipation base is provided with a connection hole 13 for fixing the first heat dissipation member, as shown in fig. 3. Alternatively, the coupling hole 13 may be an internally threaded hole. Optionally, the area of the first heat dissipation base body provided with the connection hole is not overlapped with the area provided with the first working medium pipeline and the heat dissipation fins 12. Alternatively, the connection hole 13 is a through hole having both ends extending to the first surface and the second surface of the first heat dissipation base.

Optionally, the second heat dissipation component 2 provided in the embodiment of the present disclosure includes a second heat dissipation base, and the second working medium pipeline is formed in the second heat dissipation base, so that the contact thermal resistance is reduced, and the heat dissipation capability of the second heat dissipation component is improved. Optionally, the second heat dissipation substrate is made of a blown sheet, so that natural convection heat dissipation and air-cooled heat dissipation can be performed at the same time, and the second heat dissipation substrate has the advantages of high heat transfer capacity, high heat conductivity, light weight and the like. Alternatively, the shape of the inflation panel may be a flat plate.

The shape of the heat dissipation pipe section 21 in the second working medium pipeline is not particularly limited in the disclosed embodiment, and alternatively, the shape of the heat dissipation pipe section 21 may be as shown in fig. 1 and 4, and the heat dissipation pipe section 21 includes a first heat dissipation pipe section directly communicating with the first pipeline part 3, and a second heat dissipation pipe section directly communicating with the capillary pipe section 22, and the first heat dissipation pipe section communicates with the second heat dissipation pipe section. Optionally, the communication portion between the first heat dissipation pipe section and the second heat dissipation pipe section may be one or multiple. Alternatively, the first radiating pipe section includes a first communication end 211 directly communicating with the first pipe portion 3, and a second communication end 212 opposite to the first communication end 211, and the second radiating pipe section includes a third communication end 213 directly communicating with the capillary section 22, and a fourth communication end 214 opposite to the third communication end 213, wherein the first radiating pipe section and the second radiating pipe section directly communicate with each other through the second communication end 212 and the fourth communication end 214, the path of the radiating pipe section 21 is increased, and the radiating effect of the second radiating member 2 is improved.

Optionally, the surface of the second heat dissipation member 2 is further provided with a heat dissipation reinforcement, the heat dissipation reinforcement may be integrally formed with the second heat dissipation base, the heat dissipation reinforcement may be rectangular, triangular, or the like, and the heat dissipation reinforcement may increase the heat dissipation area of the second heat dissipation member and improve the heat dissipation capability of the second heat dissipation member.

Optionally, a second heat dissipation substrate of the second heat dissipation member 2 is provided with a connection part for fixing the second heat dissipation member 2, where the connection part may be a U-shaped clip, and may be integrally formed with the second heat dissipation substrate.

The embodiment of the disclosure simultaneously provides an air conditioner outdoor unit and an air conditioner comprising the radiator.

Alternatively, as shown in fig. 5, the installation positions of the heat sink in the outdoor unit of the air conditioner may be: the first heat dissipation component 1 of the heat radiator is in heat conduction contact with the frequency conversion module 6, optionally, the first heat dissipation base body of the first heat dissipation component 1 is in contact with the lower surface of the high-power component to obtain the heat of the high-power component and dissipate the heat, and the second heat dissipation component 2 is installed on a fan support of an air conditioner outdoor unit to dissipate the heat naturally through convection and air cooling. Optionally, when the radiator provided in the embodiment of the present disclosure is installed in an outdoor unit of an air conditioner, the first working medium pipeline 11 and the second working medium pipeline have a height difference, and in the vertical direction, the height of the first working medium pipeline 11 is lower than the height of the second working medium pipeline, which is beneficial to the circulation flow of the heat exchange working medium in the working medium loop. The circulation flow method at this time may be: the heat exchange working medium in the first working medium pipeline 11 is heated to be changed into gas, the gas moves upwards along the first pipeline part 3 and enters the second working medium pipeline, the gaseous heat exchange working medium in the second working medium pipeline is changed into liquid after heat dissipation, and the liquid working medium moves downwards through the second pipeline part 4 under the action of pressure and gravity of the capillary section and flows back to the first working medium pipeline 11 to complete one-time heat dissipation cycle.

Optionally, the second heat dissipation member 2 may be mounted on a fan bracket 7 of the outdoor unit of the air conditioner, and compared with the conventional mounting on a side portion of the fan 5, the mounting position of the second heat dissipation member 2 provided in the embodiment of the present disclosure has a larger space in the outdoor unit of the air conditioner, which is beneficial to increasing the volume of the second heat dissipation member 2 and improving the heat dissipation area, and the airflow at the upper portion of the fan 5 flows more smoothly, thereby further improving the heat dissipation capability of the second heat dissipation member 2.

The present invention is not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims (8)

1. A heat sink, comprising:

a first heat radiation component which is arranged as an evaporation end and is internally provided with a first working medium pipeline,

the second heat dissipation component is arranged as a condensation end, a second working medium pipeline is arranged in the second heat dissipation component, the second heat dissipation component comprises a second heat dissipation base body, the second working medium pipeline is formed in the second heat dissipation base body, the second heat dissipation base body is a blowing plate,

a first pipeline section, and

a second pipe section;

wherein the first pipeline part and the second pipeline part are respectively connected between the first working medium pipeline and the second working medium pipeline to form a working medium loop, the path of the working medium loop is a first working medium pipeline, a first pipeline part, a second working medium pipeline and a second pipeline part in sequence, the working medium loop is set to be filled with a heat exchange working medium,

the second working medium pipeline comprises one or more capillary sections.

2. The heat sink of claim 1,

the second working medium pipeline also comprises a heat dissipation pipe section, and the heat dissipation pipe section is communicated with the second pipeline part through the capillary section.

3. The heat sink of claim 1,

the ratio of the inner diameter of the capillary section to the inner diameter of the heat dissipation pipe section is 1:3-1: 5.

4. The heat sink of claim 1,

the length of the capillary section is 40-200 mm.

5. The heat sink of claim 1,

the first heat dissipation component comprises a first heat dissipation base body, and the first working medium pipeline is formed in the first heat dissipation base body.

6. An outdoor unit of an air conditioner, comprising the heat sink as recited in any one of claims 1 to 5.

7. The outdoor unit of claim 6, further comprising a variable frequency module,

the first heat dissipation member is in thermally conductive contact with the frequency conversion module.

8. An air conditioner comprising the outdoor unit of claim 6 or 7.

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