WO2022089149A1

WO2022089149A1 - Waterproof security check instrument

Info

Publication number: WO2022089149A1
Application number: PCT/CN2021/122074
Authority: WO
Inventors: 陈志强; 李元景; 吴万龙; 唐乐; 孙秀平; 丁富华
Original assignee: 清华大学; 同方威视技术股份有限公司
Priority date: 2020-10-28
Filing date: 2021-09-30
Publication date: 2022-05-05
Also published as: CN114423217A; CN114423217B

Abstract

Embodiments of the present disclosure provides a waterproof security check instrument, comprising: a housing; a heating device (3), the heating device (3) being disposed in the housing; and heat radiators (5), the heat radiators (5) being disposed on the housing, the heat dissipation surfaces of the heat radiators (5) facing the outside of the housing, and the housing forming a closed cavity. The waterproof security check instrument further comprises a heat conducting member (4), the heat conducting member (4) being disposed in the housing, and the heat conducting member (4) being configured to transfer heat to the heat radiators (5) by means of thermal conduction. The security check instrument of the present disclosure is waterproof and has high heat dissipation efficiency.

Description

Waterproof Safety Checker

The present disclosure claims priority to Chinese Patent Application No. 202011175431.3 filed on October 28, 2020, the entire contents of which are incorporated herein by reference.

technical field

The present disclosure relates to the technical field of security inspection equipment, in particular, to a waterproof security inspection instrument, in particular to a heat dissipation structure of a portable and waterproof security inspection instrument.

Background technique

Portable security inspection instruments have advantages such as small size, easy portability, and many usage scenarios, especially when used in harsh and complex environments, so their applications are becoming more and more extensive.

However, the portable safety inspection instrument in the prior art does not have a waterproof function; in addition, although the existing portable safety inspection instrument takes into account the heat dissipation problem, the heat dissipation effect is not ideal. If the existing heat dissipation method is adopted, the waterproof performance is increased. After that, the heat dissipation effect of the portable safety inspection instrument will become worse, because the heat dissipation and waterproof functions are contradictory to some extent, and it is difficult to take into account the two at the same time.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to at least partially overcome the defects of the prior art and provide a waterproof safety inspection instrument.

The present disclosure also aims to provide a waterproof safety inspection instrument that can work normally in various environments, including harsh environments.

The purpose of the present disclosure is also to provide a waterproof safety inspection instrument, which solves the problem that the heating of the heating device in the working state seriously affects the performance of the inspection instrument.

The purpose of the present disclosure is also to provide a waterproof safety inspection instrument to solve the problem of poor heat dissipation effect caused by a completely sealed waterproof structure.

In order to achieve one of the above-mentioned purposes or purposes, the present disclosure provides the following technical solutions:

A waterproof safety inspection instrument, comprising:

case;

a heat-generating device, the heat-generating device is disposed in the housing; and

a heat sink, the heat sink is arranged on the casing, and the heat dissipation surface of the heat sink faces the outside of the casing,

The casing forms a closed chamber, and the waterproof security inspection instrument further includes a heat conducting member, the heat conducting member is disposed in the casing, and the heat conducting member is configured to transfer heat to the heat sink by means of thermal conduction.

According to some embodiments of the present disclosure, the housing is provided with an opening, and the heat sink is provided in or on the opening.

According to some embodiments of the present disclosure, a heat sink sealing ring is provided at the joint of the heat sink and the opening.

According to some embodiments of the present disclosure, the housing includes a first housing portion and a second housing portion, the housing being configured to form a closed chamber through a combination of the first housing portion and the second housing portion ;

A housing seal is provided at the junction of the first housing part and the second housing part.

According to some embodiments of the present disclosure, the thermally conductive member is in direct contact with the heat sink, or

The heat-conducting medium is arranged between the heat-conducting member and the heat sink.

According to some embodiments of the present disclosure, the heating device is connected and fixed with the heat conducting member in a surface-to-surface contact manner.

According to some embodiments of the present disclosure, the heat-conducting member includes a support frame for supporting the heat-generating device, wherein the heat-generating device is connected to the support frame in a surface-to-surface contact manner;

The thermally conductive member further includes a protrusion extending from the support frame, the protrusion corresponding to the position of the opening.

According to some embodiments of the present disclosure, the waterproof security inspection instrument further includes a fan, and an air outlet of the fan faces the heating device.

According to some embodiments of the present disclosure, the fan is disposed on the heat-conducting member obliquely, so that the axial flow of the fan is directed to the heat-generating member.

According to some embodiments of the present disclosure, the heating device is an X-ray machine, and the waterproof safety inspection instrument further includes a protective plate, and the protective plate is arranged in the heat-conducting member and beside the X-ray machine.

According to some embodiments of the present disclosure, a channel is formed between the protective plate and the X-ray machine or between the protective plate and the heat-conducting member, and the channel is provided on the side of the X-ray machine facing away from the air outlet of the fan, so that the Thermal convection is created on the path from the fan to the X-ray machine to the tunnel. It should be noted that a channel is formed between the protective plate and the heating device, and a channel can be set between the protective plate and the heat-conducting member to form heat convection, but the present disclosure is not limited to this, and the protective plate can also be in contact with the heat-conducting member to form a contact heat exchange.

According to some embodiments of the present disclosure, a heat dissipation sleeve is provided on the periphery of the X-ray machine.

According to the safety inspection apparatus of the present disclosure, the casing forms a closed chamber, so that the safety inspection apparatus can be waterproof and can work normally in various environments, including harsh environments. A heat-conducting member is set in the waterproof safety inspection instrument, the heat-conducting member is in direct or indirect contact with the heat sink, and the heat-conducting member is connected with the heating device in a surface-to-surface contact manner, thereby forming heat conduction from the heating device to the heat-conducting member to the heat sink. The heat dissipation path, in addition, by setting the fan and the heat exchange channel, the heat emitted by the heating device can also be dissipated by thermal convection, so the waterproof safety inspection instrument of the present disclosure has a high heat dissipation efficiency, and solves the problem of the heating device in the working state. The problem of heat that seriously affects the performance of the tester. Although the waterproof security inspection instrument of the present disclosure is completely sealed, the problem of poor heat dissipation effect caused by the completely sealed waterproof structure is solved by improving the heat dissipation efficiency.

Description of drawings

1 is a schematic diagram of a waterproof security inspection apparatus according to an embodiment of the present disclosure;

FIG. 2 shows a heat dissipation path of a waterproof security inspection apparatus according to an embodiment of the present disclosure;

FIG. 3 shows a heat dissipation path of the waterproof security inspection instrument according to an embodiment of the present disclosure;

FIG. 4 shows a heat dissipation path of a waterproof security inspection apparatus according to an embodiment of the present disclosure; and

FIG. 5 shows a sealing structure of a waterproof security inspection apparatus according to an embodiment of the present disclosure.

Detailed ways

Exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements. Furthermore, in the following detailed description, for convenience of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. Obviously, however, one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagram form in order to simplify the drawings.

The inspection instrument contains various electronic components, subsystems, etc., and water vapor and moisture have a great impact on their performance. In addition, the X-ray generating device or other devices in the inspection instrument generate serious heat during the working process, and the high temperature will directly affect the normal use of the equipment.

Usually, the conventional structure for the heat dissipation of conventional portable devices is to provide heat dissipation holes on the shell, and the internal heat is dissipated to the external environment through the heat dissipation holes, but this open structure cannot meet the requirements of waterproofing, and the use environment is limited. In order to ensure that the inspection instrument can work normally and reduce the impact of harsh environments on its working state, safety performance and service life, it is expected that the inspection instrument will be waterproof during use. consider. However, in this way, the casing is completely closed, and although the waterproof effect is achieved, the heat generated by the operation of the equipment cannot be effectively conducted, which has a serious impact on the performance and safety of the equipment.

According to the general concept of the present disclosure, there is provided a waterproof safety inspection instrument, comprising: a casing; a heating device, the heating device is disposed in the casing; and a heat sink, the heat sink is disposed on the casing, and The heat dissipation surface of the heat sink faces the outside of the casing, the casing forms a closed chamber, and the waterproof safety inspection instrument further includes a heat conducting member, the heat conducting member is arranged in the casing, and the heat conducting member is configured to Heat is transferred to the heat sink by thermal conduction.

FIG. 1 shows the specific structure of a waterproof safety inspection instrument according to an embodiment of the present disclosure. The waterproof safety inspection instrument includes a casing composed of a first casing part 11 and a second casing part 12 . The combination of the first housing part 11 and the second housing part 12 forms a closed chamber, and the housing sealing ring 2 is provided at the combination of the first housing part 11 and the second housing part 12 . The outer casing sealing ring is given an appropriate amount of compression to ensure the airtightness of the whole machine after the safety checker is assembled. The first housing portion 11 is substantially in the shape of a rectangular parallelepiped, and the side facing the second housing portion 12 is opened, and the second housing portion 12 is in the shape of a cover plate. The first housing part 11 is also provided with a handle 13 for portable operation of the waterproof safety inspection instrument.

The inside of the housing is mainly provided with a heating element 3 and a heat conducting element 4 . Here, the heating device 3 can be an X-ray machine for emitting X-rays, the X-rays can pass through the second housing part 12 to irradiate the inspected object, and the first housing part 11 and the second housing part 12 can be composed of Made of plastic material. The waterproof safety inspection instrument further includes other necessary components arranged in the housing to realize the inspection function, and they can be composed of known elements, which will not be described in this disclosure.

Referring to Figures 2-4, it can be seen that the X-ray machine includes a lower part and an upper part on the body. The sleeve 31 is used to dissipate the heat generated by the X-ray machine to improve the heat dissipation efficiency. The heat-conducting member 4 includes a support frame for supporting the heating device 3. The support frame includes a bottom plate located below, two side plates located on the left and right sides, and several beams. The beams are connected between the two side plates, the bottom plate and the two beams. The side panels form flat surfaces, while the upper, front and rear of the support frame are open areas. Wherein, the heating device 3 is connected to the support frame in a surface-to-surface contact manner. Specifically, the lower surface and the side surface of the heating device 3 or the X-ray machine are all flat, and the lower surface of the X-ray machine is connected to the heat-conducting member 4 . The bottom plate of the supporting frame of the X-ray machine is in direct contact with the side plate of the supporting frame of the heat conducting member 4 .

In order to dissipate heat, a heat sink 5 is provided on the casing of the waterproof safety inspection instrument. The heat dissipation surface of the heat sink 5 faces the outside of the casing. The heat sink is a fin heat dissipation structure, so that the fins of the heat sink point to the outside of the casing. The material of the heat sink is a metal with high thermal conductivity, such as copper, aluminum, etc. This structure has a large heat dissipation area, which greatly improves the heat dissipation effect.

In the embodiment of FIG. 1 , the heat sink 5 is installed in the following manner: an opening 14 is provided on the housing, and the heat sink 5 is arranged in or on the opening 14 . Specifically, two openings 14 are opened on both sides of the first housing part 11 , the openings 14 are substantially quadrangular, and the aforementioned handle 13 and at least one opening 14 are provided on the same side of the first housing part 11 . Advantageously, the side wall of the first housing part 11 has a certain thickness, and the opening 14 completely penetrates the wall, so that when the heat sink 5 is arranged in the opening, the wall can fully support the heat sink and ensure the heat sink installation firmness. The sealing groove is provided on the opening 14 or on the heat sink 5 , and a heat sink seal ring 7 is provided at the joint of the heat sink 5 and the opening 14 , and the heat sink seal ring 7 is installed in the seal groove. Similar to the housing seal, the heat sink seal is given an appropriate amount of compression to ensure the airtightness of the whole machine after the safety checker is assembled.

As an optional embodiment, the thickness of the side wall of the first housing part 11 is different from the depth of the opening 14 , the depth of the opening 14 may be greater than the thickness of the side wall of the first housing part 11 , and the outer plane of the opening 14 It is flush with the outer surface of the casing, but the edge of the opening 14 forms a rim that protrudes toward the interior of the casing, and the rim is not flush with the inner surface of the casing. In the case of wall thickness, ensure sufficient support for the heat sink.

The heat conduction member 4 and the heat sink 5 can conduct heat conduction between the heat conduction member 4 and the heat sink 5 by direct contact or by disposing a heat conduction medium 8 between the heat conduction member 4 and the heat sink 5 . In the embodiment of FIG. 1 , the heat-conducting medium 8 is arranged between the heat-conducting member 4 and the heat sink 5 . In particular, the left and right side plates of the support frame of the heat-conducting member 4 are respectively opposite to the two side surfaces of the first housing portion 11 , and the heat-conducting member 4 further includes a protrusion 41 extending from the support frame, and the protrusion 41 is connected to the two sides of the first housing part 11 respectively. The positions of the openings 14 are corresponding, the protrusions 41 extend toward the direction of the openings 14 , and the protrusions 41 can extend into the openings 14 . By arranging the protrusions, the contact between the heat-conducting member 4 and the heat sink 5 or the heat-conducting medium 8 is facilitated.

In the embodiment of FIG. 1 , the number of heat sinks 5 is two, and correspondingly, the number of openings 14 , the number of protrusions 41 , the number of heat sink seal rings 7 and the number of heat conducting mediums 8 are all two. Alternatively, the number of heat sinks 5 , the number of openings 14 , the number of protrusions 41 , the number of heat sink seal rings 7 and the number of heat conducting mediums 8 may be one or more than two, respectively, so as to achieve different degrees of heat dissipation effect. .

In order to further improve the heat dissipation effect, the waterproof safety inspection instrument further includes a fan 6, and the air outlet of the fan 6 faces the heating device 3, which is different from the use of a conventional fan. In the prior art, the air outlet of the fan is In the present disclosure, the air outlet of the fan 6 faces the heat-generating device 3, and this heat dissipation method is particularly advantageous by cooperating with the passages mentioned later, because The heat convection flowing through the heating device can be directly formed, and its heat dissipation effect is particularly excellent compared to the way that the air outlet of the fan is away from the heating device.

According to the embodiment of the present disclosure, the fan 6 is disposed obliquely on the heat-conducting member 4 and fixed on the heat-conducting member 4 , so that the axial flow of the fan 6 is directed to the heating device 3 . Further, the waterproof safety inspection instrument further includes a protective plate 15, the protective plate 15 is arranged in the heat-conducting member 4, beside the X-ray machine, the protective plate is configured to be composed of a horizontal plate and a vertical plate, the horizontal The plate and the vertical plate are perpendicular to each other, and the protective plate is made of materials with high protective ability, such as tungsten, copper, etc., and the protective plate is arranged around the head of the X-ray machine. Advantageously, a channel 16 is formed between the protective plate 15 and the X-ray machine or between the protective plate 15 and the heat-conducting member 4, and the channel is arranged on the side of the X-ray machine facing away from the air outlet of the fan 6, so that the Thermal convection is formed on the path from the fan 6 to the X-ray machine to the channel 16 as shown in FIG. 4 .

In the present disclosure, the heat-conducting member is used as an intermediate medium that conducts heat to the heat sink, and is also a support structure for providing a mounting platform for the heat-generating device. The sealing involves the casing sealing ring and the heat-dissipating fin sealing ring, which are the elastic material sealing of the whole ring. lock up. The first housing part 11 , the second housing part 12 , the outer casing sealing ring 2 , the heat sink 5 , and the heat sink sealing ring 7 are assembled to form a completely sealed structure, and the heating device 3 is directly assembled on the heat conducting member 4 . In surface-to-surface contact, the heat-conducting member 4 and the heat-dissipating fin 5 transmit heat to the external environment through contact conduction. The air outlet of the fan 6 is facing the heating position of the heating element 3, and a heat convection force is formed in the closed cavity.

The heat dissipation mode and the waterproof mode of the waterproof safety inspection instrument of the present disclosure will be described below with reference to FIGS. 2-5 .

The heat dissipation of the waterproof security inspection instrument of the present disclosure is accomplished in two ways, that is, the contact heat conduction way and the heat convection way work together.

The first heat dissipation method: the heating element 3 is installed on the heat conducting element 4, and the two are in surface-to-surface contact. The material of the heat-conducting member 4 is a metal with high thermal conductivity, such as copper and aluminum. There is a heat-conducting medium 8 to ensure that heat can be conducted to the outside, see FIG. 2 .

The second heat dissipation method: the air outlet of the fan 6 is facing the heating position of the heating element 3, so that the heat is transmitted through the heat exchange channel, as shown in Figure 3-4. By opening an open structure on the back side of the heat-conducting member 4, heat convection is formed in the sealed equipment cavity. In this way, a part of the heat is dissipated to the heat-conducting member 4, and is conducted to the heat sink 5 by heat conduction, and a part of the heat is directly dissipated by heat convection. to the heat sink 5, and finally exchanged to the external environment.

The sealing of the housing is formed by the first housing part 11 , the second housing part 12 , the housing sealing ring 2 , the heat sink 5 , and the heat sink sealing ring 7 to form a fully enclosed system. The heat sink 5 is a fin heat sink structure, which has a large heat dissipation area, can quickly exchange heat, and can be used as a waterproof structure. A sealing groove is provided on the surface assembled with the first housing part 11, and a heat sink sealing ring 7 is installed. Ensure seal, see Figure 5.

Specifically, according to an embodiment of the present disclosure, the size of the housing may be in the following range: length (235-300mm)*width (240-400mm)*height (165-300mm); the size of the X-ray machine may be between The following range: length (100-140mm)*width (80-100mm)*height (80-100mm); the size of the heat-conducting part can be within the following range: length (100-160mm)*width (100-150mm)*height (90-130mm).

According to the safety inspection apparatus of the present disclosure, the casing forms a closed chamber, so that the safety inspection apparatus can be waterproof and can work normally in various environments, including harsh environments. A heat-conducting member is set in the waterproof safety inspection instrument, the heat-conducting member is in direct or indirect contact with the heat sink, and the heat-conducting member is connected with the heating device in a surface-to-surface contact manner, thereby forming heat conduction from the heating device to the heat-conducting member to the heat sink. The heat dissipation path, in addition, by setting the fan and the heat exchange channel, the heat emitted by the heating device can also be dissipated by thermal convection, so the waterproof safety inspection instrument of the present disclosure has a high heat dissipation efficiency, and solves the problem of the heating device in the working state. The problem of heat that seriously affects the performance of the tester. Although the waterproof security inspection instrument of the present disclosure is completely sealed, the problem of poor heat dissipation effect caused by the completely sealed waterproof structure is solved by improving the heat dissipation efficiency. The safety inspection instrument of the present disclosure can effectively conduct the heat generated during the internal operation of the portable inspection instrument to the outside through the heat dissipation structure, and can meet the waterproof requirements.

Although embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that changes may be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of application of the present disclosure is defined by the appended claims and their equivalents.

List of reference numbers:

2 housing seals

3 Heating devices

4 Thermal components

5 heat sink

6 fans

7 Heatsink seal

8 Thermally conductive medium

11 The first housing part

12 Second housing part

13 handle

14 openings

15 fenders

16 channels

31 Heatsink

41 Protrusions.

Claims

A waterproof safety inspection instrument, comprising:

case;

a heat-generating device (3), the heat-generating device (3) is arranged in the housing; and

a heat sink (5), the heat sink (5) is arranged on the casing, and the heat dissipation surface of the heat sink (5) faces the outside of the casing,

It is characterized by:

The casing forms a closed chamber, and the waterproof safety inspection instrument further comprises a heat conducting member (4), the heat conducting member (4) is arranged in the casing, and the heat conducting member (4) is configured to pass heat through The heat is transferred to the heat sink (5) by way of conduction.
The waterproof safety inspection instrument according to claim 1, characterized in that:

The casing is provided with an opening (14), and the cooling fins (5) are arranged in or on the opening (14).
The waterproof safety inspection instrument according to claim 2, characterized in that:

A heat dissipation fin sealing ring (7) is arranged at the joint of the heat dissipation fin (5) and the opening (14).
The waterproof safety inspection instrument according to claim 1, characterized in that:

The housing comprises a first housing part (11) and a second housing part (12), the housing being configured by the combination of the first housing part (11) and the second housing part (12) form a closed chamber;

A housing sealing ring (2) is provided at the junction of the first housing part (11) and the second housing part (12).
The waterproof safety inspection instrument according to claim 3, characterized in that:

The heat conducting member (4) is in direct contact with the heat sink (5), or

The heat-conducting medium (8) is arranged between the heat-conducting member (4) and the heat sink (5).
The waterproof safety inspection instrument according to claim 5, characterized in that:

The heating device (3) is connected and fixed with the heat-conducting member (4) in a surface-to-surface contact manner.
The waterproof safety inspection instrument according to claim 6, characterized in that:

The heat conducting member (4) comprises a support frame for supporting the heating device (3), wherein the heating device (3) is connected to the support frame in a surface-to-surface contact manner;

The heat conducting member (4) further comprises a protrusion (41) extending from the support frame, the protrusion (41) corresponding to the position of the opening (14).
The waterproof safety inspection instrument according to any one of claims 1-7, characterized in that:

The waterproof safety inspection instrument further comprises a fan (6), and the air outlet of the fan (6) faces the heating device (3).
The waterproof safety inspection instrument according to claim 8, characterized in that:

The fan (6) is obliquely arranged on the heat-conducting element (4), so that the axial flow of the fan (6) is directed to the heating element (3).
The waterproof safety inspection instrument according to claim 9, characterized in that:

The heating device (3) is an X-ray machine, and the waterproof safety inspection instrument further comprises a protective plate (15), and the protective plate (15) is arranged in the heat-conducting member (4) and beside the X-ray machine .
The waterproof safety inspection instrument according to claim 10, wherein:

A channel (16) is formed between the protective plate (15) and the X-ray machine or between the protective plate (15) and the heat-conducting member (4), and the channel is provided at the outlet of the X-ray machine facing away from the fan (6). One side of the tuyere to create thermal convection on the path from the fan (6) to the X-ray machine to the tunnel (16).