CN219421427U - Heat abstractor and industrial control equipment - Google Patents

Abstract

The utility model discloses a heat dissipation device and industrial control equipment, and relates to the technical field of heat dissipaters; the heat dissipation device comprises a heat absorption plate and a condenser positioned at one end of the heat absorption plate; the inside of the heat absorbing plate is provided with an evaporation channel and a reflux channel which are mutually independent, the bottom end of the evaporation channel is communicated with the bottom end of the reflux channel, and the evaporation channel and the reflux channel extend along a first direction; the condenser is provided with a steam inlet and a reflux outlet, the steam inlet is communicated with the top end of the evaporation channel, and the reflux outlet is communicated with the top end of the reflux channel; the heat absorbing plate is filled with a phase-change working medium, the phase-change working medium enters the condenser through the evaporation channel and the steam inlet after absorbing heat by phase change in the heat absorbing plate, and flows back to the evaporation channel through the backflow outlet and the backflow channel after releasing heat in the condenser. The heat dissipation device disclosed by the utility model can solve the technical problem that the existing heat dissipation device cannot meet the heat dissipation requirement of higher power density with a simpler structure and lower cost.

Description

Heat abstractor and industrial control equipment

Technical Field

The utility model belongs to the technical field of radiators, and particularly relates to a radiating device and industrial control equipment.

Background

Industrial control devices such as frequency converters and drivers usually use high-power devices such as IGBTs (InsulatedGate Bipolar Transistor, insulated gate bipolar transistors), diodes, thyristors and the like; for such high-power devices, forced air cooling or liquid cooling is generally adopted to dissipate heat, so as to ensure that each device works normally at a proper temperature.

However, the existing air-cooled radiator and liquid-cooled radiator generally have the defects of large volume, heavy weight, complex structure and manufacturing process, high manufacturing cost and the like, and have obvious heat dissipation bottlenecks under the trend of increasingly miniaturized equipment and continuously improved volume and quality requirements, so that the heat dissipation requirement of higher power density cannot be met with a simpler structure and lower cost.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present utility model is directed to a heat dissipating device, which is aimed at solving the technical problem that the existing heat sink cannot meet the heat dissipation requirement of higher power density with a simpler structure and lower cost.

The utility model adopts the following technical scheme to achieve the aim of the utility model:

a heat sink comprising a heat absorbing plate and a condenser at one end of the heat absorbing plate;

the heat absorbing plate is internally provided with an evaporation channel and a backflow channel which are mutually independent, the bottom ends of the evaporation channel and the backflow channel are communicated, the evaporation channel and the backflow channel extend along a first direction, the evaporation channels are multiple, the evaporation channels are distributed at intervals along a second direction, the second direction is mutually perpendicular to the first direction, and the backflow channel is positioned on the same side or two sides of the evaporation channels;

the condenser is provided with a steam inlet and a reflux outlet, the steam inlet is communicated with the top end of the evaporation channel, and the reflux outlet is communicated with the top end of the reflux channel;

the heat absorption plate is filled with a phase change working medium, the phase change working medium enters the condenser through the evaporation channel and the steam inlet after absorbing heat through phase change in the heat absorption plate, and flows back to the evaporation channel through the backflow outlet and the backflow channel after releasing heat in the condenser.

Further, the evaporation channel and the return channel are arranged in a staggered manner in the thickness direction of the heat absorbing plate, and the thickness direction of the heat absorbing plate is perpendicular to the first direction and the second direction;

and/or one or two return channels, wherein when the number of the return channels is one, the return channels are positioned on the same side of the plurality of evaporation channels, and when the number of the return channels is two, the plurality of evaporation channels are positioned between the two return channels.

Further, the heat dissipation device also comprises a gas collecting pipe and a liquid collecting pipe which are mutually independent in pipelines;

the gas collecting tube is communicated with the top end of the evaporation channel, and the gas collecting tube is communicated with the steam inlet; the liquid collecting pipe is communicated with the top end of the backflow channel, and the liquid collecting pipe is communicated with the backflow outlet.

Further, the gas collecting tube and the liquid collecting tube extend along the second direction, the gas collecting tube and the liquid collecting tube are arranged in a staggered mode in the first direction, and the gas collecting tube and the liquid collecting tube are arranged in a staggered mode in the thickness direction of the heat absorbing plate.

Further, the gas collecting tube and the liquid collecting tube are manufactured through an integral aluminum extrusion molding process.

Further, the cross-sectional area of the header is greater than the cross-sectional area of the header.

Further, the condenser comprises a condenser tube and radiating fins; wherein:

the upper pipe orifice of the condensing pipe is communicated with the top end of the evaporation channel, and the lower pipe orifice of the condensing pipe is communicated with the top end of the backflow channel;

the radiating fins are connected to the condensing tube.

Further, the heat dissipation device also comprises a liquid collection base; the liquid collecting base is provided with a liquid collecting groove, and the liquid collecting groove is communicated with the bottom end of the evaporation channel and the bottom end of the backflow channel.

Further, the heat dissipation device also comprises a wind scooper and a heat dissipation fan; wherein:

the condenser is arranged inside the air guide cover; the air guide cover is provided with an air blowing opening, and the cooling fan is arranged at the air blowing opening.

Further, the heat absorbing plate is a closed section bar.

Further, the side wall of the evaporation channel is provided with a radiating fin.

Correspondingly, the utility model also provides industrial control equipment which comprises the heat dissipation device.

Compared with the prior art, the utility model has the beneficial effects that:

according to the heat dissipation device, the inside of the heat absorption plate is provided with the mutually independent evaporation channel and the mutually independent backflow channel, the bottom end of the evaporation channel is communicated with the bottom end of the backflow channel, and the top end of the evaporation channel is communicated with the top end of the backflow channel through the condenser; therefore, heat generated by the power device on the heat absorbing plate can be conducted to the liquid phase-change working medium in the evaporation channel, so that the liquid phase-change working medium is evaporated into a gaseous state and rises into the condenser, the heat carried by the gaseous phase-change working medium is continuously conducted to the outside through the heat absorbing plate and the condenser, and after the heat carried by the gaseous phase-change working medium is radiated to a certain degree, the gaseous phase-change working medium is re-condensed into a liquid state and flows back to the lower end of the evaporation channel along the backflow channel, and the heat generated by the power device can be continuously taken away by circulating reciprocating, so that circulated heat dissipation is realized; compared with the existing radiator, the radiator provided by the embodiment has fewer parts, and each part can be manufactured by adopting a mature molding process, so that the radiator has the advantages of simplifying a radiating structure, reducing manufacturing cost, improving radiating efficiency and meeting radiating requirements of higher power density; in addition, based on the siphon effect generated by the driving force of the steam, even if the steam inlet of the condenser is slightly lower than the reflux outlet, the phase-change working medium can be pushed to flow from the steam inlet of the condenser to the reflux outlet, so that the unidirectional flow of the phase-change working medium is ensured, and based on the characteristic, the influence of the overall small-angle inclination of the heat dissipation device on the performance of the heat dissipation device is small, namely, the heat dissipation device has stronger adaptability to the environment compared with the existing heat dissipation device.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an overall exploded structure of an embodiment of a heat dissipating device according to the present utility model;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic diagram of an overall assembly structure of an embodiment of a heat dissipating device according to the present utility model;

FIG. 4 is a schematic top view of a heat absorber plate according to an embodiment of the heat dissipating device of the present utility model;

FIG. 5 is a schematic view of a partially assembled structure of an embodiment of a heat dissipating device according to the present utility model;

fig. 6 is a schematic view of a partially assembled structure of another embodiment of the heat dissipating device of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1	Heat absorbing plate	9	Heat radiation fan
2	Condenser	11	Evaporation channel
				3	Gas collecting tube	12	Reflux passage
4	Liquid collecting pipe	21	Condenser tube
				5	Heat radiation fin	31	First plugging end cover
6	Liquid collecting base	61	Liquid collecting tank
				7	Power device	81	Air blowing port
8	Wind scooper	111	Radiating fin

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1 to 5, an embodiment of the present utility model provides a heat dissipating device including a heat absorbing plate 1 and a condenser 2 at one end of the heat absorbing plate 1;

the inside of the heat absorbing plate 1 is provided with an evaporation channel 11 and a return channel 12 which are mutually independent, and the bottom end of the evaporation channel 11 is communicated with the bottom end of the return channel 12;

the condenser 2 is provided with a steam inlet and a reflux outlet, the steam inlet is communicated with the top end of the evaporation channel 11, and the reflux outlet is communicated with the top end of the reflux channel 12;

the heat absorbing plate 1 is filled with a phase change working medium, the phase change working medium absorbs heat in the heat absorbing plate 1 in a phase change manner, enters the condenser 2 through the evaporation channel 11 and the steam inlet, releases heat in the condenser 2 in a phase change manner, and flows back to the evaporation channel 11 through the backflow outlet and the backflow channel 12.

In this embodiment, the heat absorbing plate 1 may be a common plate or a closed aluminum extrusion. Illustratively, the middle region of the absorber plate 1 may serve as a heat source region for mounting the power device 7, and the power device 7 may be secured in the heat source region by means of a threaded fastener; the power device 7 is a component with higher power density in industrial control equipment and serious heat generation in the working process, such as an IGBT (Insulated GateBipolar Transistor ), a diode, a thyristor and the like; correspondingly, the evaporation channel 11 can also be opened in the middle of the heat absorbing plate 1 in a closed channel mode so as to be close to the heat source area, so that the heat generated by the power device 7 can be conducted to the evaporation channel 11 in a concentrated mode, and the heat dissipation efficiency is improved. The return channel 12 may be provided in the form of a closed channel at the side of the absorber plate 1, i.e. at a position on the absorber plate 1 further from the heat source area. The bottom end of the evaporation channel 11 and the bottom end of the return channel 12 may be in communication through a connection channel, which may be a pipe (which may be connected to the heat absorbing plate 1 through a pipe joint), a workpiece with a passage formed therein (which may be connected to the heat absorbing plate 1 through welding, screwing, snap connection, or the like), or the like, and is not limited herein.

The phase-change working medium, namely heat transfer fluid, can be poured after vacuumizing, and is located at the bottom end of the evaporation channel 11 under the action of gravity when in a liquid state (the phase-change working medium can be understood to be located in a pipeline below the evaporation channel 11 and used for connecting the backflow channel 12 or in an internal passage of a workpiece connected with the backflow channel 12; correspondingly, the power device 7 can be installed at a lower position in a heat source area so as to be closer to the liquid phase-change working medium stored at the bottom end), and heat generated by the power device 7 can be transferred to the phase-change working medium in the evaporation channel 11 through the heat absorbing plate 1, and when the temperature reaches the boiling point of the phase-change working medium, the liquid phase-change working medium gradually evaporates into a gaseous state and rises to the condenser 2 along the evaporation channel 11.

The condenser 2 may include a plurality of condensation channels or a plurality of condensation pipes 21, and when the form of the condensation pipes is adopted, the condenser 2 may be a U-shaped aluminum pipe as shown in the drawing or an aluminum pipe in other curved shape, at this time, the steam inlet is an upper end pipe orifice of the condensation pipe 21, and the reflux outlet is a lower end pipe orifice of the condensation pipe 21, so as to extend the flowing distance of the phase change working medium while ensuring that the top end of the evaporation channel 11 is communicated with the top end of the reflux channel 12, so that the phase change working medium may be sufficiently cooled in the condenser 2. The condenser 2 may be in communication with the evaporation channel 11 and the return channel 12 by welding, which may be direct welding or indirect welding (i.e. the condenser 2, the evaporation channel 11 and the return channel 12 are all welded on a medium), which is not limited herein.

Based on the above structure, the specific heat dissipation process is as follows:

the heat generated by the power device 7 is conducted to the liquid phase-change working medium in the evaporation channel 11 through the heat absorbing plate 1, so that the temperature of the liquid phase-change working medium rises and gradually evaporates into a gaseous state, and the gaseous phase-change working medium rises along the evaporation channel 11 and enters the condenser 2 from the steam inlet of the condenser 2; in the process of flowing in the evaporation channel 11 and the condenser 2, heat carried by the gaseous phase change working medium is continuously conducted to the outside through the heat absorbing plate 1 and the condenser 2; when the heat carried by the gaseous phase-change working medium is dissipated to a certain extent, the gaseous phase-change working medium is condensed again into a liquid state, flows to the reflux outlet of the condenser 2 under the action of gravity, and finally flows back to the lower end (namely the heat source area) of the evaporation channel 11 along the reflux channel 12, so that the heat dissipation process is repeated.

Therefore, in the heat dissipating device provided in this embodiment, the evaporation channel 11 and the return channel 12 that are independent of each other are simultaneously formed inside the heat absorbing plate 1, the bottom end of the evaporation channel 11 is communicated with the bottom end of the return channel 12, and the top end of the evaporation channel 11 and the top end of the return channel 12 are communicated through the condenser 2; therefore, heat generated by the power device 7 on the heat absorbing plate 1 can be conducted to the liquid phase change working medium in the evaporation channel 11, so that the liquid phase change working medium is evaporated into a gas state and rises into the condenser 2, the heat carried by the gas phase change working medium is continuously conducted to the outside through the heat absorbing plate 1 and the condenser 2, and after the heat carried by the gas phase change working medium is diffused to a certain degree, the gas phase change working medium is re-condensed into a liquid state and flows back to the lower end of the evaporation channel 11 along the backflow channel 12, and the heat generated by the power device 7 can be continuously taken away in a circulating way, so that circulated heat dissipation is realized; compared with the existing radiator, the radiator provided by the embodiment has fewer parts, and each part can be manufactured by adopting a mature molding process, so that the radiator has the advantages of simplifying a radiating structure, reducing manufacturing cost, improving radiating efficiency and meeting radiating requirements of higher power density; in addition, based on the siphon effect generated by the driving force of the steam, even if the steam inlet of the condenser is slightly lower than the reflux outlet, the phase-change working medium can be pushed to flow from the steam inlet of the condenser to the reflux outlet, so that the unidirectional flow of the phase-change working medium is ensured, and based on the characteristic, the influence of the overall small-angle inclination of the heat dissipation device on the performance of the heat dissipation device is small, namely, the heat dissipation device has stronger adaptability to the environment compared with the existing heat dissipation device.

Alternatively, referring to fig. 4, the evaporation channels 11 extend along a first direction, the evaporation channels 11 are plural, and the evaporation channels 11 are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction;

the return channels 12 extend in the first direction, the return channels 12 being located on the same side of the plurality of evaporation channels 11, or the return channels 12 being located on both sides of the plurality of evaporation channels 11, that is, the plurality of evaporation channels 11 being located between the return channels 12. Illustratively, the return channels 12 are one or two; when the number of the return channels 12 is one, the return channels 12 are positioned on the same side of the plurality of evaporation channels 11; when there are two return passages 12, the plurality of evaporation passages 11 are located between the two return passages 12. As another example, the number of the return passages 12 is four, wherein two return passages 12 are located on one side of all the evaporation passages 11, and the other two return passages 12 are located on the other side of all the evaporation passages 11.

In this embodiment, the evaporation channel 11 and the return channel 12 are alternatively arranged in a staggered manner in the thickness direction of the heat absorbing plate 1, where the thickness direction of the heat absorbing plate 1 is perpendicular to both the first direction and the second direction. That is, the evaporation channel 11 and the return channel 12 are located at different thickness positions of the heat absorbing plate 1, so that the evaporation channel 11 and the return channel 12 are dislocated in the thickness direction of the heat absorbing plate 1, and finally a certain distance is formed between the evaporation channel 11 and the return channel 12, so that excessive heat conduction between the evaporation channel 11 and the return channel 12 is avoided to influence the heat dissipation efficiency.

Alternatively, referring to fig. 4, the heat absorbing plate 1 is a closed-end profile, specifically a closed-end aluminum extrusion profile; the evaporation channel 11 and the reflux channel 12 can be formed in the heat absorbing plate 1 in an integrated mode, so that complex processing procedures are omitted, and processing cost is saved.

Optionally, referring to fig. 1 to 5, the heat dissipating device further includes a header 3 and a header 4 with pipes independent from each other;

the gas collecting tube 3 is communicated with the top end of the evaporation channel 11, and the gas collecting tube 3 is communicated with the steam inlet; the header 4 communicates with the top end of the return channel 12, and the header 4 communicates with the return outlet.

Alternatively, referring to fig. 1 to 5, the gas collecting tube 3 and the liquid collecting tube 4 all extend along the second direction, the gas collecting tube 3 and the liquid collecting tube 4 are arranged in a staggered manner in the first direction, and the gas collecting tube 3 and the liquid collecting tube 4 are arranged in a staggered manner in the thickness direction of the heat absorbing plate 1.

As shown in the drawing, the first direction may be a vertical direction, and the second direction may extend horizontally along the width direction of the heat absorbing plate 1; the evaporation channels 11 are arranged in a plurality to improve the evaporation efficiency; the number of the return passages 12 may be one or two, and illustratively, when the number of the return passages 12 is two, the evaporation passages 11 may be arranged at intervals in the middle of the heat absorbing plate 1, and the return passages 12 may be provided at one place on each of the left and right sides of the heat absorbing plate 1 to improve the return efficiency.

The gas collecting tube 3 and the liquid collecting tube 4 can be mutually independent aluminum extrusion square flat tubes. As shown in fig. 1, the gas collecting tube 3 and the liquid collecting tube 4 extend horizontally along the width direction of the heat absorbing plate 1, and a connecting groove can be formed in the bottom wall of the gas collecting tube 3 so as to insert the part of the heat absorbing plate 1 positioned at the top end of the evaporation channel 11 into the connecting groove and fix the part by welding; the side wall of the gas collecting tube 3 can be provided with a connecting through hole so as to plug the part of the condenser 2 positioned at the steam inlet into the connecting through hole and fix the part by welding. Similarly, the bottom wall of the liquid collecting tube 4 can be provided with a connecting groove so that the part of the heat absorbing plate 1 positioned at the top end of the reflux channel 12 is inserted into the connecting groove and fixed in a welding mode; the side wall of the liquid collecting pipe 4 can be provided with a connecting through hole so as to plug the part of the condenser 2 positioned at the reflux outlet into the connecting through hole and fix the part by welding. Based on the introduction of the gas collecting tube 3 and the liquid collecting tube 4, the condensation channel or the condensation tube 21 of the condenser 2 can be arranged into a plurality of condensation channels or condensation tubes along the extending direction of the gas collecting tube 3 and the liquid collecting tube 4 at intervals, a plurality of steam inlets are communicated with the gas collecting tube 3, and a plurality of reflux outlets are communicated with the liquid collecting tube 4, so that the heat exchange efficiency is improved.

By providing the header 3 and the header 4, the mutual communication between the plurality of evaporation channels 11, the plurality of return channels 12 and the plurality of condensers 2 can be achieved. Optionally, the first plugging end cover 31 and the second plugging end cover may be fixed at two ends of the gas collecting tube 3 and the liquid collecting tube 4 respectively in a welding manner, so as to play a role in plugging, and avoid leakage of the phase change working medium.

Alternatively, referring to fig. 6, in another exemplary embodiment, the header 3 and the header 4 are manufactured by an integral aluminum extrusion process.

Illustratively, the gas collecting tube 3 and the liquid collecting tube 4 are manufactured through an integral aluminum extrusion molding process, so that the subsequent assembly is more convenient compared with the mode of separating the gas collecting tube 3 and the liquid collecting tube 4, and the assembly efficiency can be improved. The gas collecting tube 3 and the liquid collecting tube 4 are separated, so that the relative position between the two is more convenient to adjust, and the applicability is stronger under the condition that the positions and the assembly sizes of other devices deviate from the expected conditions. In the implementation process, a technician can select the arrangement modes of the gas collecting tube 3 and the liquid collecting tube 4 according to actual conditions.

Optionally, referring to fig. 1 to 5, the condenser 2 includes a condenser tube 21 and a radiator fin 5; wherein:

the upper pipe orifice of the condensing pipe 21 is communicated with the top end of the evaporation channel 11, and the lower pipe orifice of the condensing pipe 21 is communicated with the top end of the return channel 12;

the radiator fins 5 are connected to the condenser tube 21.

Optionally, the condensation tube 21 is a circular tube, and the inner diameter of the condensation tube 21 is 4 mm-10 mm.

Optionally, the cross-sectional area of the header 3 is larger than the cross-sectional area of the header 4. It should be understood that the cross-sectional areas of the header 3, header 4 refer to the cross-sectional areas of the channel portions of the header 3, header 4, and not the cross-sectional areas of the material portions.

The condenser tube 21 may be a U-shaped aluminum tube as shown; when the condenser tube 21 replaces a flat tube commonly used in a condenser in a conventional split-type thermosiphon radiator with a round tube, the through-flow sectional area can be larger, the internal resistance is smaller, and therefore the circulation efficiency of the heat conducting working medium is higher. When the cross section area of the gas collecting tube 3 is larger than that of the liquid collecting tube 4, the diffusion of the gaseous phase-change working medium is facilitated, and therefore the circulation efficiency of the phase-change working medium can be further improved. Preferably, the cross-sectional area of the header 3 is more than three times the inner diameter of the condenser tube 21.

Alternatively, referring to fig. 1 to 5, a plurality of heat radiation fins 5 are provided on the condensation duct 21.

Alternatively, referring to fig. 1 to 5, the heat dissipation fins 5 have a thickness of 0.2mm to 0.6mm.

The heat dissipation fins 5 can be aluminum fins with the thickness of 0.2 mm-0.6 mm, can be connected with the condensation tube 21 through a fin penetrating process and a tube expanding process, and are used for enhancing the heat exchange capacity of the condensation tube 21, so that the heat dissipation efficiency is improved.

Optionally, referring to fig. 1 to 5, the heat dissipating device further comprises a liquid collecting base 6; the liquid collecting base 6 is provided with a liquid collecting groove 61, and the liquid collecting groove 61 is communicated with the bottom end of the evaporation channel 11 and the bottom end of the return channel 12. The liquid collecting base 6 and the liquid collecting groove 61 on the liquid collecting base can be formed by a sheet metal stamping mode, a forging mode or a machining mode; the lower end of the heat absorbing plate 1 can be inserted into the liquid collecting groove 61 so that the bottom end of the evaporation channel 11 and the bottom end of the return channel 12 are communicated with the liquid collecting groove 61, and then the heat absorbing plate 1 and the liquid collecting base 6 are fixed in a welding mode. The liquid collecting tank 61 is used for communicating the evaporation channels 11 and the return channels 12 of the heat absorbing plate 1 with each other, as shown in fig. 1 and 4, so that the liquid phase change materials on both sides of the heat absorbing plate 1 can be quickly returned to the middle area of the heat absorbing plate 1 through the liquid collecting tank 61 for the next cycle, thereby further improving the heat dissipation efficiency.

Alternatively, referring to fig. 1 to 5, heat radiating fins 111 are provided on the side walls of the evaporation channels 11.

As shown in fig. 2, the heat dissipation fins 111 are aluminum extruded groove structures arranged at equal intervals; by providing the heat radiation fins 111, the heat exchange area of the evaporation channel 11 can be increased, thereby enhancing the local heat exchange capability and further improving the heat radiation efficiency.

Optionally, referring to fig. 1 to 5, the heat dissipating device further includes a wind scooper 8 and a heat dissipating fan 9; wherein:

the condenser 2 is arranged inside the air guide cover 8; the wind scooper 8 is provided with a wind blowing port 81, and the cooling fan 9 is arranged at the wind blowing port 81.

Illustratively, the air guide cover 8 can play a role in supporting and protecting the condenser 2, the gas collecting pipe 3 and the liquid collecting pipe 4, and the corresponding devices can be installed and fixed.

The cooling fan 9 is used for promoting the air exchange between the inside of the air guide cover 8 and the outside by means of the air blowing opening 81, and timely discharging the heat conducted outwards by the condenser 2 to the outside, so that the temperature inside the air guide cover 8 can be reduced, and the cooling effect is further improved. Wherein, the air blowing port 81 can be arranged on the top surface of the air guiding cover 8, so that the air inlet end of the cooling fan 9 is downward, and the air outlet end of the cooling fan 9 is upward, thereby forming an air supply structure of lower air inlet and upper air outlet, more conforming to the rising principle of the heated and expanded air, and optimizing the air outlet heat dissipation effect.

It should be noted that, in the heat dissipating device provided in the above embodiment, except for the air guide cover 8, other devices may be formed by one-step welding in a continuous brazing (tunnel furnace gas shielded welding) manner, and then vacuum-pumping operation is performed and a refrigerant is poured (i.e. a phase change working medium is injected).

Correspondingly, the embodiment of the utility model also provides industrial control equipment, which comprises the heat dissipation device in any embodiment.

In the present embodiment, the industrial control device may be various kinds of automatic control devices including the power device 7 such as an IGBT (InsulatedGate Bipolar Transistor ), a diode, a thyristor, and the like. The heat generated by the power device 7 can be timely conducted to the outside of the industrial control equipment through the heat dissipation device, so that the heat dissipation effect is achieved.

As for the specific structure of the heat dissipating device, reference may be made to the above-described embodiments. Because the industrial control equipment adopts all the technical schemes of all the embodiments, the industrial control equipment at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.

It should be noted that, other contents of the heat dissipating device and the industrial control device disclosed in the present utility model may refer to the prior art, and are not described herein again.

The foregoing description of the embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or as applied directly or indirectly to other related technical fields.

Claims (10)

1. The heat dissipation device is characterized by comprising a heat absorption plate and a condenser positioned at one end of the heat absorption plate;

the heat absorbing plate is internally provided with an evaporation channel and a backflow channel which are mutually independent, the bottom ends of the evaporation channel and the backflow channel are communicated, the evaporation channel and the backflow channel extend along a first direction, the evaporation channels are multiple, the evaporation channels are distributed at intervals along a second direction, the second direction is mutually perpendicular to the first direction, and the backflow channel is positioned on the same side of the evaporation channels or on two sides of the evaporation channels;

the condenser is provided with a steam inlet and a reflux outlet, the steam inlet is communicated with the top end of the evaporation channel, and the reflux outlet is communicated with the top end of the reflux channel;

the heat absorption plate is filled with a phase change working medium, the phase change working medium enters the condenser through the evaporation channel and the steam inlet after absorbing heat through phase change in the heat absorption plate, and flows back to the evaporation channel through the backflow outlet and the backflow channel after releasing heat in the condenser.

2. The heat dissipating device according to claim 1, wherein the evaporation channel and the return channel are arranged in a staggered manner in a thickness direction of the heat absorbing plate, and the thickness direction of the heat absorbing plate is perpendicular to the first direction and the second direction;

and/or one or two return channels, wherein when the number of the return channels is one, the return channels are positioned on the same side of the plurality of evaporation channels, and when the number of the return channels is two, the plurality of evaporation channels are positioned between the two return channels.

3. The heat sink of claim 1, further comprising a header and a header having separate lines;

the gas collecting tube is communicated with the top end of the evaporation channel, and the gas collecting tube is communicated with the steam inlet; the liquid collecting pipe is communicated with the top end of the backflow channel, and the liquid collecting pipe is communicated with the backflow outlet.

4. A heat dissipating device according to claim 3, wherein the gas collecting tube and the liquid collecting tube extend in the second direction, the gas collecting tube and the liquid collecting tube are arranged in a staggered manner in the first direction, and the gas collecting tube and the liquid collecting tube are arranged in a staggered manner in the thickness direction of the heat absorbing plate.

5. A heat sink according to claim 3, wherein the header and the header are manufactured by an integral aluminium extrusion process;

and/or, the cross-sectional area of the gas collecting tube is larger than the cross-sectional area of the gas collecting tube.

6. The heat sink of claim 1 wherein the condenser comprises a condenser tube and heat fins; wherein:

the upper pipe orifice of the condensing pipe is communicated with the top end of the evaporation channel, and the lower pipe orifice of the condensing pipe is communicated with the top end of the backflow channel;

the radiating fins are connected to the condensing tube.

7. The heat sink of claim 1, further comprising a liquid collection base; the liquid collecting base is provided with a liquid collecting groove, and the liquid collecting groove is communicated with the bottom end of the evaporation channel and the bottom end of the backflow channel.

8. The heat sink of claim 1, further comprising a wind scooper and a cooling fan; wherein:

the condenser is arranged inside the air guide cover; the air guide cover is provided with an air blowing opening, and the cooling fan is arranged at the air blowing opening.

9. The heat sink of claim 1 wherein the heat sink is a closed profile;

and/or the side wall of the evaporation channel is provided with a radiating fin.

10. An industrial control device, characterized in that it comprises a heat dissipating device according to any one of claims 1 to 9.