Back scattering imager structure

Abstract

According to the back scattering imager structure provided by the invention, the heat dissipation block is attached to a main heating element of the back scattering imager structure, the hollow rear end of the waterproof heat dissipation cavity is sealed, and the surface, provided with the air inlet and the air outlet, of the waterproof heat dissipation cavity is fixedly attached to the external protection shell of the back scattering imager structure in a sealed manner; the waterproof heat dissipation cavity is formed in the outer protection shell, the fan is arranged in the waterproof heat dissipation cavity, large heat dissipation capacity is provided, meanwhile, the independent heat dissipation cavity space is formed in the outer protection shell, water drops are reduced or even prevented from splashing into the inner cavity of the back scattering imager structure, and the problem that water enters the inner cavity of the back scattering imager structure is solved.

Description

Technical Field

[0001] The invention relates to the technical field of radiation imaging safety inspection, and in particular to a backscattering imager structure. Background Art

[0002] Backscatter imaging technology is a non-contact imaging technology based on the Compton backscattering effect. It uses the reverse Compton scattered rays generated by the interaction between the detector receiving rays and the extranuclear electrons of the target imaging material to achieve shallow penetration imaging of the target material. Handheld backscatter imagers are portable, reliable, and can perform real-time imaging detection.

[0003] Based on the working state of the handheld backscatter imager, there will be a need to use it in a relatively harsh environment. Therefore, high requirements are placed on the overall waterproof performance of the equipment. It must have the ability to prevent water droplets from splashing into the interior of the equipment at various angles. The ambient temperature inside the equipment has an important impact on the working state of the equipment. If the internal ambient temperature is too high, it will directly affect the working performance indicators and normal image output of the backscatter imager.

[0004] In terms of waterproofing and heat dissipation, the existing backscatter imagers are roughly divided into the following four forms, which are used alone or in combination: first, a fully sealed structure is adopted to prevent water droplets from splashing in; second, a grille with openings at a specific angle is set at the ventilation and heat dissipation channel to prevent water droplets from splashing in at most angles; third, a maze-shaped heat dissipation channel is set to prevent water droplets from directly splashing in; fourth, a dense ventilation and waterproof net is installed at the ventilation and heat dissipation channel to achieve a better waterproof effect;

[0005] The above four forms all have some shortcomings: the fully sealed structure can effectively realize the waterproofing of the equipment, but there is a problem of insufficient ability to dissipate heat in the equipment; the other forms of structure can have good waterproofing ability while realizing internal ventilation and heat dissipation of the equipment, but considering the complexity and diversity of the equipment use environment and operation process, due to the existence of the ventilation and heat dissipation channels of the equipment itself, it is impossible to completely avoid water droplets splashing in, and there is still the possibility of water entering the equipment. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a backscatter imager structure, which is used to solve the problem that the backscatter imager in the prior art adopts a fully sealed structure in terms of waterproofing and heat dissipation, which can effectively achieve equipment waterproofing, but has insufficient ability to dissipate heat from the equipment; other forms of structures with ventilation and heat dissipation channels cannot achieve the ability to completely avoid water droplets splashing in due to the existence of the ventilation and heat dissipation channels of the equipment itself, and there is still a possible problem of water entering the equipment.

[0007] To achieve the above-mentioned purpose and other related purposes, the present invention provides a backscattering imager structure, which includes: a main heating element of the backscattering imager structure, a waterproof heat dissipation structure and an external protective shell; wherein,

[0008] The waterproof heat dissipation structure includes a heat dissipation block, a fan, and a waterproof heat dissipation cavity hollowed out at the rear;

[0009] The rear side of the heat dissipation block is attached to the main heating element of the backscatter imaging device structure, and the front side of the heat dissipation block is sealed and fixedly attached to the hollow rear side of the waterproof heat dissipation cavity;

[0010] The fan is accommodated in the waterproof heat dissipation cavity;

[0011] At least one air inlet and at least one air outlet are arranged on the surface of the waterproof heat dissipation cavity, and the air inlet and the air outlet are arranged on other surfaces other than the hollow rear surface of the waterproof heat dissipation cavity;

[0012] The main heating elements of the waterproof heat dissipation structure and the backscatter imaging device structure are accommodated inside the external protective shell; the surfaces of the air inlet and the air outlet provided on the waterproof heat dissipation cavity are sealed and fixedly attached to the external protective shell; and a hollow structure is provided at a position on the external protective shell corresponding to the air inlet and the air outlet to form an independent heat dissipation cavity space inside the external protective shell.

[0013] Optionally, the wind directions of all the air inlets are perpendicular to the wind directions of all the air outlets.

[0014] Furthermore, the waterproof heat dissipation cavity is provided with an air inlet and an air outlet, wherein the air inlet is provided in the front of the waterproof heat dissipation cavity, and the air outlet is provided on the side adjacent to the front of the waterproof heat dissipation cavity.

[0015] Optionally, the heat sink block is a heat sink aluminum block with fins, the fins are located in front of the heat sink block, and the fins are accommodated inside the waterproof heat sink cavity.

[0016] Optionally, the front of the heat sink block is fixed to the back of the hollow waterproof heat sink cavity by bolts, and the front of the heat sink block and the back of the hollow waterproof heat sink cavity are sealed and fitted by waterproof foam; the waterproof heat sink cavity and the external protective shell are fixed and fitted by waterproof foam.

[0017] Optionally, the rear side of the heat sink is attached to the main heating element of the backscatter imager structure through thermal grease.

[0018] Optionally, both the air inlet and the air outlet are provided with dustproof nets.

[0019] Optionally, a waterproof vent valve is provided on the external protective shell, and an axial flow fan is provided inside the external protective shell at a position corresponding to the waterproof vent valve; the external protective shell also includes a handle shell provided on both sides of the outside of the external protective shell, the internal space of the handle shell is communicated with other spaces other than the heat dissipation cavity inside the external protective shell, and a one-way valve is provided inside the handle shell on at least one side so that the airflow can only flow from the inside of the external protective shell to the outside of the external protective shell through the one-way valve.

[0020] Furthermore, the one-way valve is a Tesla valve.

[0021] Furthermore, the waterproof vent valve is a manual waterproof vent valve or an automatic waterproof vent valve.

[0022] As described above, the backscatter imager structure of the present invention has the following beneficial effects: the backscatter imager structure of the present invention, by arranging a heat sink to be attached to the main heating element of the backscatter imager structure, and sealing the hollow rear end of the waterproof heat dissipation cavity, and sealing and fixing the surface of the waterproof heat dissipation cavity provided with an air inlet and an air outlet to be attached to the external protective shell of the backscatter imager structure, and arranging a fan inside the waterproof heat dissipation cavity to provide a larger heat dissipation capacity, and at the same time forming an independent heat dissipation cavity space inside the external protective shell, realizing the separation of the heat dissipation cavity space and the inner cavity of the backscatter imager structure, reducing or even avoiding water droplets splashing into the inner cavity of the backscatter imager structure, thereby solving the problem of water entering the inner cavity of the backscatter imager structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic diagram of the main heating elements and waterproof heat dissipation structure of the backscattering imager structure of the present invention.

[0024] Figure 2 to Figure 4 Schematic diagrams showing different viewing angles of the waterproof heat dissipation structure of the present invention.

[0025] Figure 5 Shown is a schematic diagram of a waterproof ventilation valve and an axial flow fan of the present invention.

[0026] Figure 6 Shown is a schematic diagram of the handle housing and the one-way valve of the present invention.

[0027] Component number description

[0028] 11 Heat sink

[0029] 110 fins

[0030] 12 Fan

[0031] 13 Waterproof heat dissipation cavity

[0032] 14 Main heating elements of the backscatter imager structure

[0033] 15 Air Inlet

[0034] 16 Air outlet

[0035] 20 Waterproof vent valve

[0036] 21 Axial-flow fan

[0037] 22 External protective housing

[0038] 23 Handle housing

[0039] 24 Check valve DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0041] See also Figures 1 to 6 It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0042] This embodiment provides a backscattering imager structure, such as Figures 1 to 4 As shown, the backscatter imager structure includes: a main heating element 14 of the backscatter imager structure, a waterproof heat dissipation structure and an external protective shell (not shown); wherein,

[0043] The waterproof heat dissipation structure includes a heat dissipation block 11, a fan 12 and a waterproof heat dissipation cavity 13 hollowed out at the rear;

[0044] like Figure 1 As shown, the rear of the heat sink 11 is attached to the main heating element 14 of the backscatter imaging device structure, as shown in FIG. Figure 3 As shown, the front of the heat dissipation block 11 is sealed and fixedly attached to the hollowed-out back of the waterproof heat dissipation cavity 13;

[0045] like Figure 2 As shown, the fan 12 is accommodated in the waterproof heat dissipation cavity 13;

[0046] like Figure 4 As shown, at least one air inlet 15 and at least one air outlet 16 are arranged on the surface of the waterproof heat dissipation cavity 13, and the air inlet 15 and the air outlet 16 are arranged on other surfaces other than the hollow rear surface of the waterproof heat dissipation cavity 13;

[0047] The waterproof heat dissipation structure and the main heating element 14 of the backscatter imaging structure are accommodated inside the external protective shell, the surface of the air inlet 15 and the air outlet 16 provided on the waterproof heat dissipation cavity 13 are sealed and fixedly attached to the external protective shell, and the positions on the external protective shell corresponding to the air inlet 15 and the air outlet 16 are provided with hollow structures to form an independent heat dissipation cavity space inside the external protective shell.

[0048] The backscatter imager structure of the present embodiment provides a heat dissipation block attached to the main heating element of the backscatter imager structure, seals the hollow rear end of the waterproof heat dissipation cavity, seals and fixes the surface of the waterproof heat dissipation cavity where the air inlet and the air outlet are provided to the external protective shell of the backscatter imager structure, and provides a fan inside the waterproof heat dissipation cavity to provide a larger heat dissipation capacity. At the same time, an independent heat dissipation cavity space is formed inside the external protective shell, thereby solving the problem of water entering the inner cavity of the backscatter imager structure.

[0049] It should be noted here that the front and rear directions of this embodiment are defined by the sequential connection directions of the main heating element 14 of the backscatter imager structure, the heat sink 11 and the waterproof heat sink cavity 13. For example, the rear side of the waterproof heat sink 13 is fixedly attached to the surface of the heat sink 11, and the rear side of the heat sink 11 is fixedly attached to the surface of the main heating element 14 of the backscatter imager structure.

[0050] Specifically, if the air inlet 15 and the air outlet 16 are arranged on the same surface of the waterproof heat dissipation cavity 13, when the surface faces upward, the accumulated water entering the waterproof heat dissipation cavity 13 has no path to flow out.

[0051] As a preferred example, the wind direction of all the air inlets 15 and the wind direction of all the air outlets 16 can be set to be perpendicular to each other, that is, the air inlets 15 and the air outlets 16 are arranged on the surfaces of the waterproof heat dissipation cavity 13 that are perpendicular to each other. During the use of the backscatter imager, there is always a surface of the waterproof heat dissipation cavity 13 that is horizontal. The accumulated water entering the waterproof heat dissipation cavity 13 can flow out through the air outlets on the horizontal surface of the waterproof heat dissipation cavity 13, so as to reduce or even avoid the problem of water accumulation in the waterproof heat dissipation cavity 13.

[0052] Further, as an example, Figure 4As shown, the waterproof heat dissipation cavity 13 is provided with an air inlet 15 and an air outlet 16, wherein the air inlet 15 is provided in front of the waterproof heat dissipation cavity 13, and the air outlet 16 is provided on the side adjacent to the front of the waterproof heat dissipation cavity 13, so as to maximize the ventilation area of ​​the air inlet 15 and the air outlet 16, and further enhance the heat dissipation capability of the backscatter imaging device structure.

[0053] When the backscatter imager is in use, the wind flows into the waterproof heat dissipation cavity 13 through the air inlet 15, contacts the heat dissipation block 11 through the fan 12 accommodated in the waterproof heat dissipation cavity 13, and finally flows out of the waterproof heat dissipation cavity 13 through the air outlet 16. As an example, Figure 4 As shown, the heat sink 11 is a heat sink aluminum block with fins 110, the fins 110 are located in front of the heat sink 11, and the fins 110 are accommodated in the waterproof heat sink cavity 13. The fins 110 are thin sheets extending from the main body of the heat sink aluminum block, and the fins 110 increase the surface area of ​​the heat sink aluminum block, thereby improving the heat exchange efficiency between the heat sink aluminum block and the surrounding air, so as to take away more heat and improve the heat dissipation efficiency. The heat sink 11 is made of aluminum to enhance the thermal conductivity of the heat sink 11 and reduce the weight of the backscatter imager structure.

[0054] Specifically, the internal space of the external protective shell is divided into an inner cavity and a heat dissipation cavity, wherein the inner cavity is used to accommodate other components of the backscatter imager structure except the waterproof heat dissipation structure, for example, including but not limited to the radiation source component and sensor component of the backscatter imager structure, and the main heating element 14 of the backscatter imager structure can be, for example, the internal heating element of the radiation source component and / or the sensor component. As an example, Figures 1 to 3 As shown, the front of the heat dissipation block 11 is fixed to the hollow back of the waterproof heat dissipation cavity 13 by bolt connection, and the front of the heat dissipation block 11 and the hollow back of the waterproof heat dissipation cavity 13 are sealed and fitted by waterproof foam (not shown) to seal the hollow back of the waterproof heat dissipation cavity 13; the waterproof heat dissipation cavity 13 and the external protective shell are fixedly fitted by waterproof foam (not shown), so that an independent heat dissipation cavity space is formed inside the external protective shell, thereby solving the problem of water entering the inner cavity of the backscattering imager structure, wherein the material for achieving sealing and fitting can be selected according to actual needs and is not overly limited here.

[0055] As an example, Figure 1As shown, the rear side of the heat sink 11 is attached to the main heating element 14 of the backscatter imager structure by means of thermal grease, ensuring that heat can be quickly transferred from the main heating element 14 of the backscatter imager structure to the heat sink 11, wherein the material for achieving heat transfer from the main heating element 14 of the backscatter imager structure to the heat sink 11 and the method of heat conduction can be selected according to actual needs and are not overly limited here.

[0056] As an example, the air inlet 15 and the air outlet 16 are both provided with dustproof nets, which can reduce or even avoid dust accumulation on the fan 12 and thus affect the heat dissipation capacity, while also preventing a large amount of water droplets from directly splashing into the waterproof heat dissipation cavity 13, further reducing or even avoiding the problem of water entering the inner cavity of the backscatter imaging device structure.

[0057] As an example, Figure 5 As shown, a waterproof vent valve 20 is disposed on the external protective shell 22 , and an axial flow fan 21 is disposed inside the external protective shell 22 at a position corresponding to the waterproof vent valve 20 .

[0058] The outer protective shell 22 is used to protect the internal components of the backscatter imager structure and provide structural support. Figure 6 As shown, the external protective shell 22 also includes a handle shell 23 arranged on both sides of the outside of the external protective shell 22, the internal space of the handle shell 23 is communicated with other spaces outside the heat dissipation cavity inside the external protective shell 22, and a one-way valve 24 is arranged inside the handle shell 23 on at least one side, so that the airflow can only flow from the inside of the external protective shell 22 to the outside of the external protective shell 22 through the one-way valve 24.

[0059] Specifically, the internal space of the external protective shell 22 communicated with the handle shell 23 is the inner cavity space. When the backscatter imaging device structure is cooled, the airflow can enter the external protective shell 22 through the waterproof vent valve 20, and then enter the inner cavity of the backscatter imaging device structure through the axial flow fan 21, and finally flow out from the one-way valve 24 in the handle shell 23.

[0060] When using a backscatter imager, you usually only need to use Figures 1 to 4The waterproof heat dissipation structure shown can meet the heat dissipation demand of the backscatter imager structure and ensure that the temperature of the backscatter imager structure is in a normal state. However, when the backscatter imager works for a long time in a high temperature environment, the heat dissipation demand of the backscatter imager structure increases due to the high external temperature environment. In order to avoid the risk that the heat dissipation demand cannot be met by the waterproof heat dissipation structure alone, the waterproof vent valve 20, the axial flow fan 21 and the one-way valve 24 can be used to assist in the heat dissipation of the backscatter imager structure.

[0061] Further, as an example, the waterproof vent valve 20 can be a manual waterproof vent valve. Only when the external environment is hot and dry and there is no water flow, the waterproof vent valve 20 will be opened by manual control to assist in heat dissipation. When the waterproof vent valve 20 is closed, the waterproof vent valve 20 can achieve sealing by itself. In other embodiments, the waterproof vent valve 20 can also be an automatic waterproof vent valve, for example, the opening and closing of the waterproof vent valve 20 can be controlled by the system. The type of the waterproof vent valve is not excessively limited here.

[0062] As an example, Figure 6 As shown, the one-way valve 24 is a Tesla valve, which has a simple structure, high reliability, and does not require other moving parts, thereby reducing the maintenance requirements and failure rate of the backscatter imager structure and improving the reliability of the backscatter imager structure.

[0063] In summary, the backscatter imager structure of the present invention is provided with a heat sink attached to the main heating element of the backscatter imager structure, and the hollow rear end of the waterproof heat dissipation cavity is sealed, and the surface of the waterproof heat dissipation cavity with air inlet and air outlet is sealed and fixedly attached to the external protective shell of the backscatter imager structure, and a fan is provided inside the waterproof heat dissipation cavity to provide a larger heat dissipation capacity. At the same time, an independent heat dissipation cavity space is formed inside the external protective shell to achieve separation of the heat dissipation cavity space and the inner cavity of the backscatter imager structure, reduce or even avoid water droplets splashing into the inner cavity of the backscatter imager structure, and thus solve the problem of water entering the inner cavity of the backscatter imager structure. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A backscatter imager structure, characterized in that: The backscatter imager structure includes: a main heating element of the backscatter imager structure, a waterproof heat dissipation structure and an external protective shell; wherein, The waterproof heat dissipation structure includes a heat dissipation block, a fan, and a waterproof heat dissipation cavity hollowed out at the rear; The rear side of the heat dissipation block is attached to the main heating element of the backscatter imaging device structure, and the front side of the heat dissipation block is sealed and fixedly attached to the hollow rear side of the waterproof heat dissipation cavity; The fan is accommodated in the waterproof heat dissipation cavity; At least one air inlet and at least one air outlet are arranged on the surface of the waterproof heat dissipation cavity, and the air inlet and the air outlet are arranged on other surfaces other than the hollow rear surface of the waterproof heat dissipation cavity; The main heating elements of the waterproof heat dissipation structure and the backscatter imaging device structure are accommodated inside the external protective shell; the surfaces of the air inlet and the air outlet provided on the waterproof heat dissipation cavity are sealed and fixedly attached to the external protective shell; and a hollow structure is provided at a position on the external protective shell corresponding to the air inlet and the air outlet to form an independent heat dissipation cavity space inside the external protective shell.

2. The backscatter imager structure according to claim 1, characterized in that: The wind directions of all the air inlets are perpendicular to the wind directions of all the air outlets.

3. The backscatter imager structure according to claim 2, characterized in that: The waterproof heat dissipation cavity is provided with an air inlet and an air outlet, wherein the air inlet is provided in the front of the waterproof heat dissipation cavity, and the air outlet is provided on the side adjacent to the front of the waterproof heat dissipation cavity.

4. The backscatter imager structure according to claim 1, characterized in that: The heat dissipation block is a heat dissipation aluminum block with fins. The fins are located in front of the heat dissipation block, and the fins are accommodated in the waterproof heat dissipation cavity.

5. The backscatter imager structure according to claim 1, characterized in that: The front of the heat sink block is fixed to the hollow rear of the waterproof heat sink cavity by bolts, and the front of the heat sink block and the hollow rear of the waterproof heat sink cavity are sealed and fitted by waterproof foam; the waterproof heat sink cavity and the external protective shell are fixed and fitted by waterproof foam.

6. The backscatter imager structure according to claim 1, characterized in that: The rear side of the heat sink is attached to the main heating element of the backscatter imager structure through thermal conductive silicone grease.

7. The backscatter imager structure according to claim 1, characterized in that: The air inlet and the air outlet are both provided with dustproof nets.

8. The backscatter imager structure according to claim 1, characterized in that: A waterproof ventilation valve is provided on the external protective shell, and an axial flow fan is provided inside the external protective shell at a position corresponding to the waterproof ventilation valve; the external protective shell also includes a handle shell provided on both sides of the outside of the external protective shell, the internal space of the handle shell is communicated with other spaces other than the heat dissipation cavity inside the external protective shell, and a one-way valve is provided inside the handle shell on at least one side so that the airflow can only flow from the inside of the external protective shell to the outside of the external protective shell through the one-way valve.

9. The backscatter imager structure according to claim 8, characterized in that: The one-way valve is a Tesla valve.

10. The backscatter imager structure according to claim 8, characterized in that: The waterproof vent valve is a manual waterproof vent valve or an automatic waterproof vent valve.

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