Heat dissipation system for solving environment temperature in closed cavity

Abstract

The utility model provides a heat dissipation system for solving the problem of environment temperature in a closed cavity, which comprises a main frame body, an air duct rear shell, a main radiator, a plurality of external cooling upstream fans and a bidirectional tooth radiator, part of the bidirectional tooth radiator is positioned outside the main frame body on one side of the main radiator, and the other part of the bidirectional tooth radiator is positioned inside the main frame body. A downstream fan connected with the bidirectional tooth radiator is arranged in the main frame body, and an upstream fan is arranged on the side, away from the downstream fan, of the outer portion, on one side of the main radiator, of the main frame body. According to the heat dissipation system for solving the problem of the environment temperature in the closed cavity, hot air in the main frame body is blown to the two-way tooth radiator through the downstream fan, heat is conducted to the air duct rear shell through the two-way tooth radiator, then the heat is taken away through the external cooling upstream fan, heat exchange of an internal circulation system is achieved, an independent heat exchanger cavity is not needed, and the heat dissipation efficiency is improved. Other heating electronic elements or assemblies can also exist in the space where the bidirectional tooth radiator is located.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a heat dissipation system for solving the internal temperature problem of a closed cavity. Background Art

[0002] With the continuous development of science and technology, electronic products have more functions, higher power, and are moving towards lightweight. However, as the power increases, the heat generation also increases. Miniaturization and lightweight design have higher requirements for product heat dissipation. For most electronic products, there are certain requirements for waterproofness or airtightness. In outdoor environments, products have higher requirements for waterproofness and airtightness. Harsh environments give rise to strict airtightness requirements, which will aggravate the rise in internal ambient temperature and affect the normal operation of the machine. Therefore, an efficient heat dissipation system is needed to match it to ensure the long-term working stability of the product.

[0003] There are currently three ways to dissipate heat in a closed cavity.

[0004] Method 1: Dissipate heat through the chassis shell. This is generally used in chassis shell products with low heat generation. The advantages of this solution are low cost and the heat dissipation solution will not affect the internal layout of the chassis. The disadvantage is that the heat dissipation effect is poor, and most of the heat dissipation depends on internal high-temperature radiation. The overall temperature of this type of product is not high, and the internal ambient temperature will not affect the life and reliability of the device.

[0005] Method 2: The temperature inside the chassis is averaged by adding a spoiler fan, and the chassis shell dissipates heat through heat conduction + heat radiation. It is generally used in chassis products with high thermal conductivity such as metal shells. The heat dissipation effect of this solution is average, and the surface treatment of the metal chassis inside and outside to increase the emissivity (passivation, anodizing, spraying, etc.) is required. The heat dissipation effect is better than that of solution 1, the cost is moderate, and the heat dissipation effect is average.

[0006] Method 3: Exchange internal and external heat through heat exchanger mode. This method is generally used in closed boxes with large internal heat generation. The temperature requirements cannot be met through heat conduction and radiation, and a heat exchanger is required for internal and external heat exchange. Advantages: obvious heat exchange effect, rapid heat dissipation response. Disadvantages: high cost, requiring a special external heat exchange device or the heat exchange part in the machine body takes up a lot of space, and the cost is high. Utility Model Content

[0007] The utility model aims to provide a heat dissipation system for solving the internal temperature of a closed cavity, so as to solve the problem that the existing heat dissipation system occupies a large space.

[0008] The utility model provides a heat dissipation system for solving the internal temperature problem of a closed cavity, comprising a main frame, a duct rear shell arranged on the outside of the main frame, a main radiator arranged on the outside of the main frame and located in the duct rear shell, a plurality of external cooling upward fans arranged at the lower end of the main radiator, and a two-way tooth radiator arranged on one side of the main radiator, wherein a portion of the two-way tooth radiator is located outside the main frame on one side of the main radiator, and the other portion is located inside the main frame, a downward fan connected to the two-way tooth radiator is arranged inside the main frame, and an upward fan is arranged on the side of the main radiator outside the main frame away from the downward fan.

[0009] The above-mentioned heat dissipation system for solving the internal temperature problem of the closed cavity blows the hot air in the main frame to the two-way tooth radiator through the downward fan, and conducts the heat to the rear shell of the air duct through the two-way tooth radiator, and then the heat is taken away by the external cooling upward fan, thereby realizing heat exchange of the internal circulation system. There is no need for an independent heat exchanger cavity, and other heat-generating electronic components or components can also exist in the space where the two-way tooth radiator is located.

[0010] Furthermore, a plurality of air outlet holes are provided at the upper end of the air duct rear shell.

[0011] Furthermore, the main frame is provided with a plurality of through holes at the position of the external cooling upward fan.

[0012] Furthermore, the bidirectional tooth heat sink includes a base plate and outer fins and inner fins arranged on both sides of the base plate, the outer fins are arranged in the air duct rear shell, and the inner fins are arranged in the main frame.

[0013] Furthermore, the fin thickness of the inner fin and the outer fin is 1-2 mm, the fin spacing is 3-5 mm, and the thickness of the base plate is 5-10 mm.

[0014] Furthermore, a sealing groove is provided on an edge of the substrate located on one side of the inner fin, and a sealing strip is provided in the sealing groove.

[0015] Furthermore, the base plate is connected to the main frame through screws.

[0016] Furthermore, an upper plate is provided on the outer side of the main frame.

[0017] Furthermore, it also includes a mounting bracket connected to the main frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic view of the heat dissipation system for solving the internal temperature of the closed cavity in the first embodiment of the utility model at a first viewing angle;

[0019] Figure 2for Figure 1 The internal structure diagram of the heat dissipation system for solving the internal temperature of the closed cavity;

[0020] Figure 3 for Figure 1 A stereoscopic image of the heat dissipation system for solving the internal temperature of the closed cavity from a second perspective;

[0021] Figure 4 for Figure 3 The internal structure diagram of the heat dissipation system for solving the internal temperature of the closed cavity;

[0022] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of a bidirectional tooth heat sink in a heat dissipation system for solving the internal temperature of a closed cavity;

[0023] Figure 6 for Figure 1 Exploded diagram of the heat dissipation system for solving the internal temperature problem of a closed cavity.

[0024] Description of main component symbols:

[0025]

[0026] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings. Several embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] See also Figures 1 to 6 The utility model provides a heat dissipation system for solving the internal temperature of a closed cavity, comprising a main frame 10, a duct rear shell 20 arranged on the outside of the main frame 10, a main radiator 30 arranged on the outside of the main frame 10 and located in the duct rear shell 20, a plurality of external cooling upward fans 40 arranged at the lower end of the main radiator 30, and a two-way tooth radiator 50 arranged on one side of the main radiator 30, wherein a portion of the two-way tooth radiator 50 is located outside the main frame on one side of the main radiator 30, and the other portion is located inside the main frame 10, a downward fan 60 connected to the two-way tooth radiator 50 is arranged inside the main frame 10, and an upward fan 70 is arranged on the side of the main radiator 30 outside the main frame 10 away from the downward fan 60.

[0031] The above-mentioned heat dissipation system for solving the internal temperature problem of the closed cavity blows the hot air in the main frame 10 to the two-way tooth heat sink 50 through the downward fan 60, and conducts the heat to the air duct rear shell 20 through the two-way tooth heat sink 50, and then the heat is taken away by the external cooling upward fan 40, thereby realizing heat exchange of the internal circulation system. There is no need for an independent heat exchanger cavity, and other heat-generating electronic components or assemblies can also exist in the space where the two-way tooth heat sink 50 is located.

[0032] In one embodiment of the present invention, a plurality of air outlet holes are provided at the upper end of the air duct rear shell 20 , and the plurality of air outlet holes correspond to a plurality of external cooling upward fans 40 , so as to quickly discharge the heat in the air duct rear shell 20 .

[0033] In an embodiment of the present invention, the main frame 10 is provided with a plurality of through holes 11 at the position of the external cooling upward fan 40 , so that the air duct rear shell 20 and the main frame 10 can be connected.

[0034] In one embodiment of the utility model, the bidirectional tooth heat sink 50 includes a base plate 51 and outer fins 52 and inner fins 53 arranged on both sides of the base plate 51, the outer fins 52 are arranged in the air duct rear shell 20, and the inner fins 53 are arranged in the main frame 10, so as to realize heat transfer between the air duct rear shell 20 and the main frame 10 through the outer fins 52 and the inner fins 53.

[0035] In an embodiment of the present invention, the fin thickness of the inner fin 53 and the outer fin 52 is 1-2 mm, the fin spacing is 3-5 mm, and the thickness of the base plate 51 is 5-10 mm.

[0036] In one embodiment of the utility model, a sealing groove 54 is provided at an edge of the base plate 51 on one side of the inner fin 53 , and a sealing strip is provided in the sealing groove 54 to ensure the airtightness of the internal circulation of the whole machine.

[0037] It should be noted that in the embodiment of the utility model, the inner and outer fins of the bidirectional tooth heat sink 50 are orthogonal in space, and the inner and outer fins share the same base plate 51. The inner fin 53 has a smaller area, which can concentrate the heat absorption of the high-temperature gas blown out by the internal circulation fan G, thereby increasing the utilization rate of the fins. The outer fin 52 has a larger heat exchange area, which can effectively reduce the base plate temperature, increase the temperature difference between the inside and outside, and thus improve the internal and external heat conduction efficiency. Figure 5 As shown, the inner fin 53 is relatively small, and there are no fins around the substrate 51 in the direction of the inner fin 53. The substrate 51 in the empty space is grooved, and a sealing strip is added. The screw holes and the chassis are tightly fitted with screws to ensure the tightness of the internal circulation of the inverter. The above-mentioned heat dissipation system for solving the internal temperature of the closed cavity is optimized based on the heat transfer method of the traditional heat exchanger, achieving low cost, small space occupation, light weight, good heat exchange effect, and simple production process.

[0038] In an embodiment of the present invention, the base plate 51 is connected to the main frame 10 by screws.

[0039] In an embodiment of the present invention, an upper plate 80 is provided on the outer side of the main frame 10 to facilitate opening the main frame 10 and repairing the components in the main frame 10 .

[0040] In one embodiment of the present invention, a mounting bracket 90 connected to the main frame 10 is further included to fix the heat dissipation system on the device in use.

[0041] In an embodiment of the present invention, the bidirectional tooth heat sink 50 is made of any material having good heat dissipation effect, such as aluminum, profile aluminum, copper, brass or red copper.

[0042] In one embodiment of the utility model, the bidirectional tooth radiator 50 can be any one of a corrugated tooth bidirectional tooth radiator, a heat pipe type bidirectional tooth radiator, a profile type bidirectional tooth radiator, a shovel tooth type bidirectional tooth radiator, a die-cast bidirectional tooth radiator, a brazing type / tin soldering type (fin) bidirectional tooth radiator, or a combination of two thereof.

[0043] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat dissipation system to solve the internal temperature of a closed cavity. It is characterized in that The invention comprises a main frame, an air duct rear shell arranged on the outside of the main frame, a main radiator arranged on the outside of the main frame and located in the air duct rear shell, a plurality of external cooling upward fans arranged at the lower end of the main radiator, and a two-way tooth radiator arranged on one side of the main radiator, wherein a portion of the two-way tooth radiator is located outside the main frame on one side of the main radiator, and the other portion is located inside the main frame, a downward fan connected to the two-way tooth radiator is arranged inside the main frame, and an upward fan is arranged on the side of the outside of the main frame on one side of the main radiator away from the downward fan.

2. The heat dissipation system for solving the internal temperature of a closed cavity according to claim 1, It is characterized in that The upper end of the air duct rear shell is provided with a plurality of air outlet holes.

3. The heat dissipation system for solving the internal temperature of a closed cavity according to claim 1, It is characterized in that The main frame is provided with a plurality of through holes at the position of the upward fan for external cooling.

4. The heat dissipation system for solving the internal temperature of a closed cavity according to claim 1, It is characterized in that The bidirectional tooth heat sink comprises a base plate and outer fins and inner fins arranged on both sides of the base plate, the outer fins are arranged in the air duct rear shell, and the inner fins are arranged in the main frame.

5. The heat dissipation system for solving the internal temperature of a closed cavity according to claim 4, It is characterized in that The fin thickness of the inner fin and the outer fin is 1-2 mm, the fin spacing is 3-5 mm, and the thickness of the base plate is 5-10 mm.

6. The heat dissipation system for solving the internal temperature of a closed cavity according to claim 4, It is characterized in that A sealing groove is provided on the edge of the base plate on one side of the inner fin, and a sealing strip is provided in the sealing groove.

7. The heat dissipation system for solving the internal temperature of a closed cavity according to claim 4, It is characterized in that The base plate is connected to the main frame through screws.

8. The heat dissipation system for solving the internal temperature of a closed cavity according to claim 1, It is characterized in that An upper plate is arranged on the outer side of the main frame.

9. The heat dissipation system for solving the internal temperature of a closed cavity according to claim 1, It is characterized in that Also included is a mounting bracket connected to the main frame.

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