CN214038705U

CN214038705U - Heat dissipation device for air conditioner outdoor unit

Info

Publication number: CN214038705U
Application number: CN202022871827.3U
Authority: CN
Inventors: 刘婵
Original assignee: Nanjing Vocational University of Industry Technology NUIT
Current assignee: Nanjing Vocational University of Industry Technology NUIT
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-08-24
Anticipated expiration: 2030-12-01

Abstract

The utility model discloses an outer quick-witted heat abstractor of air conditioner, including cooling working medium inflow pipe, cooling working medium outflow pipe, cooling working medium circulating pipe, circulating pump and heating panel, cooling working medium circulating pipe is established between cooling working medium inflow pipe and cooling working medium outflow pipe, be equipped with a plurality of groups of miniflow way in the heating panel, every group miniflow way is including runner entrance section, runner export section and a plurality of heat dissipation section, and the heat dissipation section is the wave type microtubule that is parallel to each other, the heat dissipation section is established between runner entrance section and runner export section, and runner entrance section and runner export section opposite direction position in the runner between adjacent set up, cooling working medium inflow pipe links to each other with the runner entrance section respectively, cooling working medium outflow pipe links to each other with runner export section respectively. The utility model provides a heat abstractor adopts many microchannel structure's microchannel structure, through the multichannel and the alternative structural design of wave type heat dissipation section, the heating area is even reasonable, greatly increased heat exchange area, the heat dissipation capacity is big, improves cooling efficiency greatly, can effectively reduce the temperature of PCB board in the automatically controlled box rapidly, protects electrical component's normal operating.

Description

Heat dissipation device for air conditioner outdoor unit

Technical Field

The utility model belongs to the technical field of the heat dissipation and specifically relates to an automatically controlled box microchannel heat abstractor for among air condensing units.

Background

With the development of economic society, people increasingly demand the automation and intelligence level of household appliances. The air conditioner is used as an indispensable electric appliance in daily life, and the control method of the air conditioner is increasingly automated and intelligentized, so that the requirement on an air conditioner controller is also increasingly high.

An electric control box is arranged in the outdoor unit of the variable frequency air conditioner, and the controller is installed in the electric control box. The more and more complex control method leads the heat productivity of the controller to be more and more when the air conditioner runs; and the electric elements on the PCB board in the controller are very sensitive, if the PCB board can not be cooled and radiated timely and efficiently, the electric elements can be out of order or even burnt out when the temperature is too high. The existing electronic control element heat dissipation devices are mostly cooled by air cooling or by leading out a refrigerant from an air conditioning pipeline. These cooling methods have low heat dissipation efficiency, cannot rapidly dissipate a large amount of heat, and the heat dissipation device has a complex structure and a large volume, and occupies much space inside the outdoor unit. Therefore, it is desired to solve the above problems.

Publication No. CN211903094U discloses an outdoor unit of air conditioner, wherein the circuit board is cooled by a common heat pipe, and although the traditional air cooling is changed and the heat is dissipated by the heat pipe, the heat exchange efficiency is not high, the heat is not uniform for a long time, and the temperature at the inlet end of the heat pipe is low, and the temperature at the outlet end of the heat pipe is high, which leads to the deformation and damage of the electric heating plate.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a cooling efficiency is high, and shared space is little, simple structure, and required extra heat dissipation energy consumption is few, and economic nature and practicality are strong supplementary heat abstractor of outer quick-witted automatically controlled box of air conditioner.

The technical scheme is as follows: in order to achieve the above purpose, the utility model comprises a cooling working medium inflow pipe, a cooling working medium outflow pipe, a cooling working medium circulation pipe, a circulation pump and a heat dissipation plate, wherein the circulation pump is provided with the cooling working medium inflow pipe or the cooling working medium outflow pipe; the cooling working medium circulating pipe is arranged between the cooling working medium inflow pipe and the cooling working medium outflow pipe, a plurality of groups of micro channels are arranged in the heat dissipation plate, each group of micro channels comprises a flow channel inlet section, a flow channel outlet section and a plurality of heat dissipation sections, the heat dissipation sections are wave-shaped micro pipes which are parallel to each other, the heat dissipation sections are arranged between the flow channel inlet section and the flow channel outlet section, the flow channel inlet section and the flow channel outlet section in adjacent flow channels are arranged in opposite directions, the cooling working medium inflow pipe is connected with the flow channel inlet section respectively, and the cooling working medium outflow pipe is connected with the flow channel outlet section respectively.

Preferably, the heat dissipation plate comprises an upper shell and a lower shell connected with the upper shell, an inlet channel groove, an outlet channel groove and a micro channel groove are formed in the lower shell, adjacent heat dissipation sections are arranged in a staggered mode, the upper shell is provided with grooves identical to the lower shell, the grooves are matched with the lower shell to form a closed channel, pipelines can be arranged in the grooves to serve as the channels according to different manufacturing processes, and the grooves can also serve as corresponding channels.

Preferably, the microchannel comprises a group of branch channels which are respectively communicated with the channel inlet and the channel outlet, and the diameters of the channel inlet and the channel rough opening are not less than the sum of the pipe diameters of the branch channels.

Preferably, the cooling working medium circulating pipe is in an S-shaped distribution design, and a group of radiating fins are arranged on the cooling working medium circulating pipe.

Preferably, the upper housing is provided with a micro-fin structure in the groove gap.

Preferably, the fins penetrate through the upper shell and penetrate out of the top surface of the upper shell.

Further, the heat dissipation device is arranged inside the shell of the electric control box of the outdoor unit of the air conditioner.

Has the advantages that: compared with the prior art, the utility model has the following apparent advantage:

(1) the utility model provides a heat abstractor adopts many microchannel structure's microchannel structure, through the multichannel and the alternative structural design of wave type heat dissipation section, the heating area is even reasonable, greatly increased heat exchange area, the heat dissipation capacity is big, improves cooling efficiency greatly, can effectively reduce the temperature of PCB board in the automatically controlled box rapidly, protects electrical component's normal operating.

(2) The utility model discloses in the opposite design of adjacent microchannel access & exit be every adjacent two sets of miniflow way promptly, the flow opposite direction of cooling working medium business turn over, this design can make whole PCB board realize the even cooling heat dissipation, the phenomenon that the entry section temperature that has avoided traditional cooling plate to appear is low, the export section temperature is low can prevent to warp and the component failure scheduling problem because of the face that the temperature is inhomogeneous brings.

(3) The heat dissipation plate in the utility model adopts a micro-channel structure, has small overall size, can be directly installed in an electric control box, does not occupy the space in the shell of the outdoor unit, and makes the internal structure of the outdoor unit more reasonable; the heat dissipation device is arranged in the electric control box, is more fully contacted with the heating element, and further improves the heat dissipation efficiency; and the heat dissipation device has small volume, less materials and less required supporting equipment, so the cost investment is lower and the economic applicability is good.

Drawings

Fig. 1 is a schematic view of the overall structure of the heat dissipation device of the present invention;

FIG. 2 is a schematic view of a heat sink structure;

FIG. 3 is a schematic view of the structure of a fin in a microchannel;

FIG. 4 is a schematic view of a micro flow channel structure;

FIG. 5 is a schematic view of another embodiment of a microchannel;

FIG. 6 is a schematic view of a partial structure of a microchannel.

Wherein: 1-a heat sink; 11-an upper shell; 13-a lower shell; 12-micro flow channel; 14-an inlet section; 15-a heat dissipation section; 16-an outlet section; 17-an inflatable balloon; 18-a micro fin; 19-upper shell microchannel; 2-a cooling working medium inflow pipe; 3-a circulating pump; 4-a cooling working medium outflow pipe; 5-working medium circulating pipe; 6-parallel radiating fins.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the microchannel heat sink for an outdoor unit of an air conditioner includes a heat sink body 1, a cooling medium inflow pipe 2, a micro circulation pump 3, a cooling medium outflow pipe 4, and a medium circulation pipe 5. The cooling working medium inflow pipe 2 is provided with a micro circulating pump 3. The cooling working medium inflow pipe and the cooling working medium outflow pipe 4 of the cooling working medium 2 are communicated through a working medium circulating pipe 5. The working medium circulating pipe 5 is bent into an S shape and is sleeved with a plurality of parallel fins 6; the working medium circulating pipe 5 is fixedly arranged at an air outlet of an air conditioner external unit. Referring to fig. 3, the upper housing 11 covers the lower housing 12, and grooves 19 are also formed in corresponding positions on the upper housing 11, and are matched with the grooves 19 in the lower housing 12 to form a closed channel for flowing the cooling medium. The upper housing 11 is provided with a micro fin structure in the gap of its groove 19. The fins 18 are made of aluminum. The fins 18 extend through the upper housing and out from the top surface of the upper housing 11. The additional fin 18 structure of establishing can further strengthen the radiating effect, improves cooling efficiency.

As shown in fig. 2, the heat-radiating plate 1 includes an upper case 11, a lower case 13, and microchannels 12; the lower shell 13 is provided with a plurality of grooves to form micro channels 12, and the upper shell 11 is provided with the same upper shell micro channels 19; the cooling medium flows in the microchannels 12. The multiple groups of micro-channels 12 are arranged on the lower shell 13 in parallel, the inlet section 14 of each group of micro-channels 13 is communicated with the cooling working medium inflow pipe 2, and the outlet section 16 of each micro-channel is connected with the cooling working medium outflow pipe 4.

As shown in fig. 4 and 5, the microchannel includes an inlet section 14, a heat-dissipating section 15, and an outlet section 16. When entering the heat dissipation section 15 from the inlet section 14, the heat dissipation section 15 is a wave-shaped micro-pipe which is parallel to each other, and can also be alternately distributed and arranged, the micro-channel is dispersed into a plurality of branch channels by a main channel, and the branch channels are parallel to each other; when the heat dissipation section 15 reaches the outlet section 16, each branch channel assembles a main channel again, the pipe diameter of the runner inlet of the inlet section 14 and the pipe diameter of the runner outlet of the outlet section 16 are not less than the sum of the pipe diameters of the heat dissipation section 15, the micro channels adopt an adjacent alternative arrangement mode and a plurality of micro channel structures, the heating area is uniform, the heat dissipation capacity is large, the cooling efficiency is high, the temperature of a PCB (printed circuit board) in the electric control box can be effectively and rapidly reduced, and the normal operation of electric elements is protected. Furthermore, the inlet sections 14 and outlet sections 16 of the microchannels are alternately distributed so that the flow direction of the cooling medium is opposite in each two adjacent sets of microchannels. The arrangement mode of the flowing direction can realize uniform cooling and heat dissipation of the whole PCB, avoid the phenomena of low temperature at an inlet section and low temperature at an outlet section of the traditional cooling plate, prevent the problems of plate surface deformation, element failure and the like caused by uneven temperature,

as shown in fig. 6, an expansion ball 17 is disposed between the branch channel in the micro channel 12 and the channel inlet of the inlet section and the channel outlet of the outlet section, and the expansion ball 17 is used to increase the space at the connection, so that the inflow and outflow working mediums are buffered and can relatively uniformly enter the channel of each heat dissipation section 15.

The whole micro-channel heat dissipation device is compact in structure, small in size, convenient to install and high in practicability and is installed inside the shell of the electric control box of the outdoor unit of the air conditioner.

The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments can be provided in addition to the above embodiments. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements and the like that are made within the spirit and principle of the present invention are within the scope of the present invention.

Claims

1. The utility model provides an outer quick-witted heat abstractor of air conditioner which characterized in that: the cooling system comprises a cooling working medium inflow pipe, a cooling working medium outflow pipe, a cooling working medium circulating pipe, a circulating pump and a heat dissipation plate, wherein the circulating pump is provided with the cooling working medium inflow pipe or the cooling working medium outflow pipe; the cooling working medium circulating pipe is arranged between the cooling working medium inflow pipe and the cooling working medium outflow pipe, a plurality of groups of micro channels are arranged in the heat dissipation plate, each group of micro channels comprises a flow channel inlet section, a flow channel outlet section and a plurality of heat dissipation sections, the heat dissipation sections are wave-shaped micro pipes which are parallel to each other, the heat dissipation sections are arranged between the flow channel inlet section and the flow channel outlet section, the flow channel inlet section and the flow channel outlet section in adjacent flow channels are arranged in opposite directions, the cooling working medium inflow pipe is connected with the flow channel inlet section respectively, and the cooling working medium outflow pipe is connected with the flow channel outlet section respectively.

2. The heat sink for an outdoor unit of an air conditioner as claimed in claim 1, wherein: the heating panel includes casing and the lower casing that links to each other with last casing, be equipped with runner entry section slot and runner export section slot down in the casing to and heat dissipation section slot, and crisscross the arranging between the adjacent heat dissipation section.

3. The heat sink for an outdoor unit of an air conditioner as claimed in claim 2, wherein: the upper shell is provided with a groove which is the same as that of the lower shell and is matched with the lower shell to form a closed micro-channel.

4. The heat sink for an outdoor unit of an air conditioner as claimed in claim 3, wherein: and an expansion ball is arranged between the micro-channel and the channel inlet section and between the micro-channel and the channel outlet section.

5. The heat sink for an outdoor unit of an air conditioner as claimed in claim 4, wherein: the pipe diameters of the flow channel inlet and the flow channel outlet are not less than the sum of the pipe diameters of the branch channels.

6. The heat sink for an outdoor unit of an air conditioner as claimed in claim 2, wherein: the cooling working medium circulating pipe is in an S-shaped distribution design.

7. The heat sink for an outdoor unit of an air conditioner as claimed in claim 6, wherein: and a group of radiating fins are arranged on the cooling working medium circulating pipe.

8. The heat sink for an outdoor unit of an air conditioner as claimed in claim 3, wherein: the upper shell is provided with a micro fin structure in the groove gap.

9. The heat sink for an outdoor unit of an air conditioner as claimed in claim 8, wherein: the fin runs through the upper shell and penetrates out of the top surface of the upper shell.

10. The heat sink for an outdoor unit of an air conditioner as claimed in claim 1, wherein: the heat dissipation device is arranged inside the shell of the electric control box of the outdoor unit of the air conditioner.