Heat dissipation structure and environment detector

Abstract

The utility model provides a heat dissipation structure and an environment detector, the heat dissipation structure comprises a frame, a back plate, a panel, a circuit board, a first heat dissipation fan and a part to be cooled, the back plate and the panel are oppositely arranged on two surfaces of the frame; the back plate is provided with an exhaust window; the circuit board is arranged on the inner side of the panel; the first cooling fan is arranged between the circuit board and the back plate, and the air outlet direction of the first cooling fan faces the exhaust window; and the to-be-cooled part is arranged between the first cooling fan and the back plate. According to the invention, the first cooling fan is arranged between the circuit board and the backboard, and the to-be-cooled part is arranged between the first cooling fan and the backboard, so that during heat dissipation, airflow entering the first cooling fan can form an airflow barrier at the front part of the circuit board, and heat of other assemblies can be effectively prevented from being diffused to the circuit board; and normal work of the circuit board is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental detectors, in particular to a heat dissipation structure and an environmental detector. Background Art

[0002] Since ambient air particulate sampling is often carried out continuously for a long time in an unobstructed environment, especially in hot summer weather, sampling equipment often crashes or key components burn out due to insufficient internal heat dissipation design. In order to overcome the high temperature environment, facilitate the smooth exchange of air inside the equipment with the outside air, and ensure that high temperature does not accumulate in the equipment, it is necessary to optimize the heat dissipation duct and improve the problem of insufficient heat dissipation design of existing equipment.

[0003] An existing invention patent application, with publication number CN108776052A, discloses a comprehensive ambient air sampler, relating to the technical field of environmental monitoring equipment. The invention comprises a housing, within which are disposed a particulate sampling line and a gas sampling line. The particulate sampling line includes a particulate sampling port, a blower, and an air exhaust port. The particulate sampling port is connected to a sampling head, and the particulate sampling port, the blower, and the air exhaust port are sequentially connected via a first pipe. The gas sampling line includes an air inlet, a sampling pump, and an air outlet, which are sequentially connected via a second pipe. The air inlet is connected to a sampling bottle.

[0004] As in the above technical solution, a fan is provided as a sampling power source. However, most current sampling instruments are only provided with a single fan for heat dissipation. Moreover, since the fan is mostly installed close to the inner wall of the instrument, not only is the heat dissipation efficiency low, but it is also unable to isolate the heat transfer between components. Utility Model Content

[0005] In view of this, the present invention proposes a heat dissipation structure and an environmental detector that can isolate heat transfer and have high heat dissipation efficiency, so as to solve the problems of existing sampling instruments that cannot isolate heat transfer and have low heat dissipation efficiency.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] On the one hand, the utility model provides a heat dissipation structure, including a frame, a back plate, a panel, a circuit board, a first heat dissipation fan and components to be dissipated, wherein:

[0008] The back plate and the panel are arranged oppositely on two surfaces of the frame;

[0009] The back panel is provided with an exhaust window;

[0010] The circuit board is arranged on the inner side of the panel;

[0011] The first cooling fan is arranged between the circuit board and the back plate, and the air outlet direction of the first cooling fan is toward the exhaust window;

[0012] The component to be cooled is arranged between the first cooling fan and the back plate.

[0013] On the basis of the above technical solution, preferably, it further includes a clamp, which is connected to the frame and presses the first cooling fan.

[0014] On the basis of the above technical solution, preferably, the first cooling fan is an axial flow fan, and the first cooling fan has protruding edges;

[0015] The hoop is a plate-shaped structure, and the hoop is clamped in the two edges.

[0016] On the basis of the above technical solution, preferably, the first heat dissipation fan is provided with a connecting portion, and the connecting portion is connected to the two edges.

[0017] On the basis of the above technical solution, preferably, a sealing plate is further included, a hollow groove is opened on the surface of the frame located between the back plate and the front plate, and the sealing plate is connected to the frame to seal the hollow groove.

[0018] On the basis of the above technical solution, preferably, it further includes a first metal grid, which is arranged on one surface of the frame and located between the first cooling fan and the circuit board.

[0019] On the basis of the above technical solution, preferably, it further includes dust-proof cotton and a second metal grid, wherein the dust-proof cotton is attached to the first metal grid and is located outside the first metal grid;

[0020] The second metal grid presses the dustproof cotton, and the second metal grid is connected to the first metal grid through a fastener.

[0021] On the basis of the above technical solution, preferably, a second cooling fan is further included, the second cooling fan is arranged in the frame, and the second cooling fan is attached to the back plate.

[0022] On the other hand, the present invention provides an environmental detector, comprising the above-mentioned heat dissipation structure.

[0023] On the basis of the above technical solution, preferably, the component to be heat-dissipated is a fan.

[0024] The heat dissipation structure and environmental detector of the present invention have the following beneficial effects compared with the prior art:

[0025] (1) By arranging a first cooling fan between the circuit board and the back plate, and the components to be cooled are arranged between the first cooling fan and the back plate, when cooling, the airflow entering the first cooling fan will form an airflow barrier in front of the circuit board, which can effectively prevent the heat of other components from diffusing to the circuit board, so as to avoid affecting the normal operation of the circuit board; at the same time, the airflow blown out by the first cooling fan can also sweep the components to be cooled, so that the heat is discharged through the exhaust window of the back plate along with the airflow, thereby effectively improving the cooling efficiency;

[0026] (2) By providing a hollow groove on the frame, it is convenient to install components such as circuit boards in the frame; by providing a sealing plate to seal the hollow groove, foreign matter can be prevented from entering and causing damage to components; by providing a first metal grid on the frame, gas can be supplied from the bottom, which is more conducive to forming an airflow barrier in front of the circuit board to isolate heat; at the same time, a second metal grid is provided to cooperate with the first metal grid to clamp dustproof cotton, so that filtering can be achieved, further preventing foreign matter from entering;

[0027] (3) By setting up a second cooling fan, it can work in conjunction with the first cooling fan to improve gas flowability, thereby effectively improving heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A three-dimensional diagram of the environmental detector of the present utility model;

[0030] Figure 2 This is a second perspective stereogram of the environmental detector of the present invention;

[0031] Figure 3 This is a three-dimensional diagram of the bottom structure of the environmental detector of the present utility model;

[0032] Figure 4 This is a disassembled structural diagram of the dustproof cotton and the second metal grid of the environmental detector of the utility model;

[0033] Figure 5 A three-dimensional diagram of the heat dissipation structure of the present invention;

[0034] Figure 6 This is a second perspective view of the heat dissipation structure of the present invention;

[0035] Figure 7This is a three-dimensional diagram of the internal structure of the heat dissipation structure of the present invention;

[0036] Figure 8 For the utility model Figure 7 A magnified view of the structure at point A;

[0037] Figure 9 This is a front view of the component layout of the heat dissipation structure of the present invention;

[0038] In the figure: 1. Frame; 101. Hollow groove; 2. Back plate; 201. Exhaust window; 3. Panel; 4. Circuit board; 5. First cooling fan; 51. Edge; 52. Connecting part; 6. Component to be dissipated; 7. Hoop; 8. First metal grid; 9. Dust-proof cotton; 10. Second metal grid; 11. Second cooling fan; 12. Sealing plate. DETAILED DESCRIPTION

[0039] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] like Figures 1 to 9 As shown, the heat dissipation structure of the present invention includes a frame 1, a back plate 2, a panel 3, a circuit board 4, a first heat dissipation fan 5, a component to be dissipated 6, a clamp 7, a first metal grid 8, dustproof cotton 9, a second metal grid 10, a second heat dissipation fan 11 and a sealing plate 12;

[0041] The environmental detector of the utility model includes the above-mentioned heat dissipation structure.

[0042] like Figures 5-7 As shown, the back plate 2 and the panel 3 are arranged on two surfaces of the frame 1 relative to each other; the back plate 2 is provided with an exhaust window 201; the circuit board 4 is arranged on the inner side of the panel 3; the first cooling fan 5 is arranged between the circuit board 4 and the back plate 2, and the air outlet direction of the first cooling fan 5 is toward the exhaust window 201; the heat dissipation component 6 is arranged between the first cooling fan 5 and the back plate 2;

[0043] As shown in the above structure, when heat is dissipated, due to the suction effect of the first cooling fan 5, air will circulate between the circuit board 4 and the first cooling fan 5, thereby forming an air curtain, thereby preventing heat from diffusing to the circuit board 4, thereby preventing the normal operation of the circuit board 4 from being affected;

[0044] At the same time, the airflow blown out by the first cooling fan 5 will also sweep the components to be cooled 6, so that the heat is discharged through the exhaust window 201 of the back plate 2 along with the airflow, thereby effectively improving the cooling efficiency.

[0045] like Figures 7-9 As shown, the hoop 7 is connected to the frame 1, and the hoop 7 presses the first cooling fan 5;

[0046] As in the above structure, by providing a clamp 7 for fixing the first cooling fan 5, the convenience of disassembly and assembly of the first cooling fan 5 can be ensured. At the same time, this structure solves the problem that the first cooling fan 5 is located between the circuit board 4 and the component to be cooled 6 and cannot be fixed by conventional bolts, thereby ensuring convenient grouping.

[0047] like Figure 8 As shown, the first cooling fan 5 is an axial flow fan, and the first cooling fan 5 has a protruding edge 51; the hoop 7 is a plate-shaped structure, and the hoop 7 is engaged in the two edges 51;

[0048] As shown in the above structure, the hoop 7 is a plate-like structure. Specifically, it can be set as an n-type plate, so that it can be easily engaged between the two edges 51, and then the two ends of the hoop 7 can be fixedly connected to the frame 1.

[0049] like Figure 8 As shown, the first cooling fan 5 is provided with a connecting portion 52, and the connecting portion 52 is connected to the two edges 51;

[0050] As in the above structure, by providing the connecting portion 52 on the first cooling fan 5, the structure of the first cooling fan 5 can be strengthened to avoid the problem of damage to the housing;

[0051] Specifically, the shell of the first cooling fan 5 is a rectangular three-dimensional shell. When in use, one side is against the frame 1, and the opposite side is engaged with the clamp 7. Connecting parts 52 are set on both sides for reinforcement. In this way, when in use, the connecting part 52 will not interfere with the installation of the clamp 7, and the structural strength of the shell is guaranteed.

[0052] like Figures 1 to 6 As shown, a hollow groove 101 is formed on the surface of the frame 1 between the back plate 2 and the front plate 3, and a sealing plate 12 is connected to the frame 1 to seal the hollow groove 101;

[0053] As in the above structure, by providing the hollow groove 101, the operating space is expanded, and it is convenient to install components such as the circuit board 4 in the frame 1, so as to improve the convenience of assembly;

[0054] By providing a sealing plate 12 to seal the hollow groove 101, foreign matter can be prevented from entering and causing damage to the components;

[0055] like Figure 6As described above, the first metal grid 8 is provided on one surface of the frame 1 , and the first metal grid 8 is located between the first cooling fan 5 and the circuit board 4 ;

[0056] As in the above structure, by arranging the first metal grid 8 on the frame 1, gas can be supplied from the bottom, which is more conducive to forming an airflow barrier in front of the circuit board 4 to isolate heat.

[0057] like Figure 4 As shown, the dustproof cotton 9 is attached to the first metal grid 8, and the dustproof cotton 9 is located on the outside of the first metal grid 8; the second metal grid 10 presses the dustproof cotton 9, and the second metal grid 10 is connected to the first metal grid 8 by fasteners;

[0058] As in the above structure, the second metal grid 10 cooperates with the first metal grid 8 to clamp the dustproof cotton 9, so that gas filtration can be achieved, further preventing foreign matter from entering, thereby ensuring the application stability of the internal components;

[0059] Specifically, the fasteners may be bolts, so as to facilitate the disassembly of the second metal grid 10 , thereby facilitating the cleaning or maintenance of the dustproof cotton 9 .

[0060] like Figure 9 As shown, the second cooling fan 11 is arranged in the frame 1, and the second cooling fan 11 is attached to the back plate 2;

[0061] As in the above structure, by providing the second cooling fan 11, it can work in conjunction with the first cooling fan 5 to improve air flow, thereby effectively improving the cooling efficiency;

[0062] Specifically, in this environmental detector, the component to be heat-dissipated 6 is a fan.

[0063] Specific implementation steps:

[0064] During heat dissipation, the first cooling fan 5 and the second cooling fan 11 work together. Airflow enters through the first metal mesh 8 and forms an air curtain in front of the circuit board 4, thereby reducing the diffusion of heat to the circuit board 4. The airflow then flushes the heat dissipation component 6 to dissipate heat from the heat dissipation component 6, and then the airflow is extracted by the second cooling fan 11, thereby achieving good heat dissipation.

[0065] Specifically, when in use, the environmental detector is set up by a tripod, about 1.5m from the ground, with the first metal grid 8 facing the ground, so as to make full use of the lower temperature airflow below to achieve good heat dissipation of the instrument.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat dissipation structure, characterized in that: It comprises a frame (1), a back plate (2), a panel (3), a circuit board (4), a first cooling fan (5), a component to be cooled (6) and a first metal grid (8), wherein: The back plate (2) and the panel (3) are arranged oppositely on two surfaces of the frame (1); The back plate (2) is provided with an exhaust window (201); The circuit board (4) is arranged on the inner side of the panel (3); The first cooling fan (5) is arranged between the circuit board (4) and the back plate (2), and the air outlet direction of the first cooling fan (5) is toward the exhaust window (201); The component to be cooled (6) is arranged between the first cooling fan (5) and the back plate (2); The first metal grid (8) is arranged on one surface of the frame (1), and the first metal grid (8) is located between the first cooling fan (5) and the circuit board (4).

2. The heat dissipation structure according to claim 1, wherein: It also includes a hoop (7), which is connected to the frame (1), and the hoop (7) presses the first cooling fan (5).

3. The heat dissipation structure according to claim 2, wherein: The first cooling fan (5) is an axial flow fan, and the first cooling fan (5) has a protruding edge (51); The hoop (7) is a plate-shaped structure, and the hoop (7) is engaged in the two edges (51).

4. The heat dissipation structure according to claim 3, wherein: The first cooling fan (5) is provided with a connecting portion (52), and the connecting portion (52) is connected to the two edges (51).

5. The heat dissipation structure according to claim 1, wherein: It also includes a sealing plate (12), a hollow groove (101) is provided on the surface of the frame (1) located between the back plate (2) and the panel (3), and the sealing plate (12) is connected to the frame (1) to seal the hollow groove (101).

6. The heat dissipation structure according to claim 5, wherein: It also includes dustproof cotton (9) and a second metal grid (10), wherein The dustproof cotton (9) is attached to the first metal grid (8), and the dustproof cotton (9) is located outside the first metal grid (8); The second metal grid (10) presses the dustproof cotton (9), and the second metal grid (10) is connected to the first metal grid (8) via a fastener.

7. The heat dissipation structure according to claim 1, wherein: It also includes a second cooling fan (11), which is arranged in the frame (1) and is attached to the back plate (2).

8. An environmental detector, characterized in that: The heat dissipation structure comprises the heat dissipation structure according to any one of claims 1 to 7.

9. The environmental detector according to claim 8, wherein: The component to be cooled (6) is a fan.

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