JP6619607B2 - X-ray inspection equipment - Google Patents

Description

  The present invention relates to an X-ray inspection apparatus.

  As a conventional X-ray inspection apparatus, for example, an apparatus described in Patent Document 1 is known. An X-ray inspection apparatus described in Patent Document 1 is provided in a casing, and includes an X-ray generation means for irradiating X-rays, an X-ray detection means for detecting X-rays, and a casing for cooling the X-ray generation means. Cooling air supply means for supplying cooling air into the body.

JP 2009-300379 A

  Since the X-ray generation means is driven at a high voltage, it is particularly easy to generate heat among the devices provided in the X-ray inspection apparatus. Since the heat generated from the X-ray generation means raises the temperature in the housing, there is a risk of raising the temperature of the control board or the like disposed in the housing. Therefore, the conventional X-ray generation means includes cooling air supply means for supplying cooling air into the housing. However, in the conventional X-ray inspection apparatus, the cooling air is taken into the casing by the cooling air supply means, and the X-ray generation means is cooled together with other devices by lowering the overall temperature in the casing. The wire generating means cannot be cooled efficiently.

  An object of this invention is to provide the X-ray inspection apparatus which can cool an X-ray generation part efficiently.

  An X-ray inspection apparatus according to the present invention is an X-ray inspection apparatus in which an X-ray generation unit that generates X-rays is disposed in a housing, and includes a blower that blows air, and the blower generates X-rays. The air is blown to the heat exchange member that performs heat exchange with the X-ray generation unit or the X-ray generation unit.

  In this X-ray inspection apparatus, the blower blows air to the X-ray generator or the heat exchange member that exchanges heat with the X-ray generator. Thereby, the X-ray generator can be directly cooled by the air blown from the blower. Therefore, the X-ray inspection apparatus can efficiently cool the X-ray generation unit.

  In one embodiment, the heat exchange member mounts the X-ray generation unit, supports the mounting unit having heat conductivity, and supports the mounting unit, and forms a space below the mounting unit. The air blower may blow air toward the space. In this configuration, since the mounting unit is cooled by blowing air toward the space below the mounting unit, the X-ray generation unit can be cooled via the mounting unit. In addition, since the mounting portion and the pair of support portions form an air flow path, air is blown toward the space below the X-ray generation section to generate an air flow along the flow path. be able to. Thereby, for example, a flow is formed in which the air that has passed through the space travels upward along the side surface of the casing, so that it is possible to suppress heat from being retained in the casing.

  In one embodiment, a control board for controlling the operation of the device including the X-ray generation unit is provided, and the control board may be disposed at a position other than between the blower and the X-ray generation unit or the heat exchange member. Good. Thereby, it can suppress that the flow of air is interrupted | blocked by the control board. Therefore, since air is effectively blown toward the X-ray generation unit, the X-ray generation unit can be efficiently cooled.

  In one embodiment, the air blower may be a cooler that blows cooled air. Thereby, an X-ray generation part can be cooled more efficiently.

  In one embodiment, a fan that blows air blown from the blower toward the X-ray inspection device or the heat exchange member may be provided. Thereby, air can be blown more reliably to the X-ray inspection apparatus or the heat exchange member.

  According to the present invention, the X-ray generator can be efficiently cooled.

It is a perspective view which shows the external appearance of the X-ray inspection apparatus which concerns on one Embodiment. It is a perspective view which shows the inside of the shield box of the X-ray inspection apparatus shown in FIG. It is sectional drawing of the shield box of the X-ray inspection apparatus shown in FIG. It is sectional drawing along the IV-IV line in FIG. It is the figure which looked at the heat exchange member from the top.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

  An X-ray inspection apparatus 1 shown in FIG. 1 is an apparatus that performs quality inspection of a product W (see FIG. 2) in a production line for products such as food. The X-ray inspection apparatus 1 irradiates the product W that is continuously conveyed with X-rays, and determines a defect of the product W based on the amount of X-rays transmitted through the product W.

  As shown in any of FIGS. 1 to 3, the X-ray inspection apparatus 1 includes a shield box (housing) 3, a conveyor 5, an X-ray irradiator (X-ray generation unit) 7, and an X-ray line. A sensor 9, a cooler 20, and a control board 24 are provided. The X-ray inspection apparatus 1 includes a monitor 11. The monitor 11 has, for example, a touch panel function, and accepts input of inspection parameters used at the time of initial setting or inspection by an operator. The monitor 11 displays the inspection result of the product W. In the following description, the right direction in FIG. 3 is defined as “front” of the shield box 3 (X-ray inspection apparatus 1), and the left direction in FIG.

  Inside the shield box 3, a conveyor 5, an X-ray irradiator 7, an X-ray line sensor 9, and the like are accommodated. As shown in FIG. 1, openings 3 a are provided on both sides of the shield box 3 to carry the product W into the shield box 3 (inspection room K) or carry the product W out of the shield box 3. ing. The opening 3a is closed by a shielding curtain (not shown) for suppressing leakage of X-rays to the outside of the shield box 3. The shielding curtain is made of, for example, rubber containing lead.

  The conveyor 5 conveys the product W in the shield box 3. As shown in FIG. 1, the conveyor 5 is disposed so as to be positioned in the opening 3 a formed on both side surfaces of the shield box 3. The conveyor 5 conveys the product W placed on the belt by rotating an endless belt by a driving roller driven by a conveyor motor (not shown).

  The X-ray irradiator 7 generates and emits X-rays. The X-ray irradiator 7 is disposed above the conveyor 5 and irradiates the fan-shaped irradiation range X with X-rays toward the X-ray line sensor 9 disposed below the conveyor 5.

  The X-ray line sensor 9 detects X-rays. As shown in FIG. 3, the X-ray line sensor 9 is disposed below the conveyor 5 in the shield box 3. The X-ray line sensor 9 detects X-rays that have passed through the product W and / or the conveyor 5 and have passed through a slit (not shown) provided in a third partition plate 4c described later. As shown in FIG. 2, the X-ray line sensor 9 is composed of pixel sensors 9 a arranged in a straight line along a direction orthogonal to the conveying direction of the conveyor 5. The X-ray line sensor 9 outputs an X-ray transmission image signal indicating the amount of X-ray transmission detected by the pixel sensor 9a to a control unit (not shown). The control unit performs image processing based on the X-ray transmission image signal, and determines the defect of the product based on the transmission amount of the X-ray transmitted through the product W.

  As shown in FIG. 3, the shield box 3 has an examination room K. In the inspection room K, a conveyor 5 is arranged. The examination room K is defined by a first partition plate 4a, a second partition plate 4b, and a third partition plate 4c. The first partition plate 4a constitutes the upper surface of the examination room K. The second partition plate 4b constitutes the side surface of the examination room K. The third partition plate 4c constitutes the lower surface of the examination room K. The 1st partition plate 4a, the 2nd partition plate 4b, and the 3rd partition plate 4c are formed with members, such as stainless steel, for example. In FIG. 3, illustration of a cover provided on the front surface of the shield box 3 and covering the front of the examination room K is omitted.

  An X-ray irradiator 7 is disposed in the shield box 3. The X-ray irradiator 7 is disposed on the first partition plate 4a. Specifically, the X-ray irradiator 7 is disposed on the first partition plate 4 a via the heat exchange member 30. The first partition plate 4a is provided with a slit (not shown), and the X-ray irradiated from the X-ray irradiator 7 is irradiated to the examination room K through the slit.

  As shown in FIGS. 3 and 4, the heat exchange member 30 includes a placement portion 32 and support portions 34 and 36. The mounting part 32 and the support parts 34 and 36 are plate members.

  The placement unit 32 is placed with the X-ray irradiator 7. As FIG. 5 shows, the mounting part 32 is exhibiting the rectangular shape, for example. The mounting portion 32 is formed of a material having thermal conductivity (for example, stainless steel). The mounting portion 32 is provided with a plurality of holes H. The hole H is formed through the mounting portion 32 in the thickness direction. The hole H is provided, for example, outside the region where the X-ray irradiator 7 is disposed and inside the pair of support portions 34 and 36. The number of holes H may be set as appropriate. In addition, the mounting portion 32 is provided with a slit 32a through which the X-rays irradiated from the X-ray irradiator 7 pass. The placement unit 32 is disposed such that the position of the slit 32a coincides with the position of the slit provided in the first partition plate 4a. Although not shown in FIG. 4, a cylindrical body may be disposed between the mounting portion 32 and the first partition plate 4a so as to surround the slit 32a and the slit of the first partition plate 4a. Good. The cylinder suppresses X-ray leakage.

  The support portions 34 and 36 support the placement portion 32. The support portions 34 and 36 are disposed on the first partition plate 4a. The support parts 34 and 36 have a rectangular shape, for example. The support portions 34 and 36 are made of a material having thermal conductivity. As shown in FIG. 4, the support part 34 and the support part 36 are arranged to face each other with a predetermined interval in the width direction of the shield box 3. Each of the support portion 34 and the support portion 36 is attached substantially perpendicular to the placement portion 32. Each of the support part 34 and the support part 36 extends substantially parallel to each other along the front-rear direction of the shield box 3. Thereby, a space S is formed below the placement portion 32. 3 shows an example in which the length of the support portion 34 (36) is shorter than the length of the placement portion 32 in the front-rear direction, the length of the placement portion 32 and the support portions 34 and 36 is an example. May be equivalent.

  As shown in FIG. 3, the cooler 20 is disposed behind the heat exchange member 30. The cooler 20 sucks air in the shield box 3 from the intake port 20a, heat-exchanges the sucked air in a heat exchanger (not shown), and cools the air cooled by the heat exchange from the supply port 20b into the shield box 3. To supply. The intake port 20 a is provided in the upper part of the cooler 20. The supply port 20 b is provided in the lower front part of the cooler 20. The cooler 20 has an exhaust port (not shown) communicating with the outside of the shield box 3 in order to exhaust heat to the outside.

  The cooler 20 is disposed at a position where the air supplied from the supply port 20 b faces the space S of the heat exchange member 30. That is, the cooler 20 blows cooling air to the space S of the heat exchange member 30.

  A fan 22 is disposed between the cooler 20 and the space S of the heat exchange member 30. The fan 22 blows the cooled air supplied from the supply port 20 b of the cooler 20 into the space S of the heat exchange member 30. FIG. 4 shows an example in which only one fan 22 is provided, but a plurality of fans 22 may be provided.

  When the cooled air is supplied from the supply port 20 b of the cooler 20, the air flows toward the space S of the heat exchange member 30 through the fan 22. The air contacts the placement part 32 and the support parts 34 and 36 of the heat exchange member 30, and cools the placement part 32 and the support parts 34 and 36. The mounting part 32 and the support parts 34 and 36 have thermal conductivity. As a result, the X-ray irradiator 7 placed on the placement unit 32 is cooled by air via the placement unit 32 and / or the support units 34 and 36. When the air passes through the space S, it hits the inner surface in front of the shield box 3 and flows along the inner surface and the ceiling surface of the shield box 3. Then, the air is sucked from the air inlet 20a of the cooler 20. In this way, as indicated by arrows in FIG. 3, an air flow is formed in the shield box 3 until the air supplied from the supply port 20b of the cooler 20 is drawn into the intake port 20a.

  In addition, the air supplied from the supply port 20 b of the cooler 20 flows upward through the hole H provided in the mounting portion 32. Thereby, the X-ray irradiator 7 can be directly cooled by the cooled air that has passed through the hole H. The air that flows upward flows along the ceiling surface by the air flow, and is sucked from the air inlet 20a of the cooler 20.

  The control board 24 controls operations of the conveyor 5, the X-ray irradiator 7, the X-ray line sensor 9, and the like. The control board 24 is disposed at a position other than between the cooler 20 and the heat exchange member 30. That is, the control board 24 is disposed at a position that does not hinder the air flow. In this embodiment, the control board 24 is arrange | positioned at the one inner surface side in the width direction of the shield box 3, for example, as FIG. 4 shows. In the present embodiment, since the control board 24 is disposed in the same space as the X-ray irradiator 7, it can be cooled by the cooled air supplied from the cooler 20. In addition, the cooler 20 can cool the apparatus arrange | positioned in the space connected in the shield box 3. FIG.

  As described above, in the X-ray inspection apparatus 1 according to this embodiment, the cooler 20 blows air to the heat exchange member 30 that performs heat exchange with the X-ray irradiator 7. Thereby, the X-ray irradiator 7 can be directly cooled by the air blown from the cooler 20. Therefore, the X-ray inspection apparatus 1 can efficiently cool the X-ray irradiator 7.

  In the present embodiment, the heat exchange member 30 has the X-ray irradiator 7 mounted thereon, supports the mounting portion 32 having heat conductivity, the mounting portion 32, and below the mounting portion 32. And a pair of support portions 34 and 36 forming the space S. The cooler 20 blows air toward the space S. In this configuration, since the mounting unit 32 is cooled by blowing air toward the space S below the mounting unit 32, the X-ray irradiator 7 can be cooled via the mounting unit 32. In addition, since the mounting portion 32 and the pair of support portions 34 and 36 form an air flow path, the air is blown toward the space S below the X-ray irradiator 7, so that the air flow along the flow path. An air flow can be generated. Thereby, since the air which passed the space S goes along the inner surface of the shield box 3 and goes upwards, it can suppress that a heat | fever retains in the shield box 3. FIG.

  In the present embodiment, the control board 24 is disposed at a position other than between the cooler 20 and the heat exchange member 30. Thereby, it can suppress that the flow of air is interrupted | blocked by the control board 24. FIG. Therefore, since air is effectively blown toward the X-ray irradiator 7, the X-ray irradiator 7 can be efficiently cooled.

  In this embodiment, since the cooler is used as a device that blows air to the heat exchange member 30, the X-ray irradiator 7 can be cooled more efficiently.

  In this embodiment, the fan 22 which blows the air sent from the cooler 20 toward the heat exchange member 30 is provided. Thereby, air can be blown more reliably to the heat exchange member 30.

  The present invention is not limited to the above embodiment. For example, in the above embodiment, the X-ray irradiator 7 is described as an example in which the X-ray irradiator 7 is placed on the heat exchange member 30. However, the heat exchange member 30 may not be provided. In this case, the X-ray irradiator 7 is disposed on the first partition plate 4a. The cooler 20 (air blower) blows air directly to the X-ray irradiator 7.

  In the said embodiment, the form which uses the cooler 20 as an air blower was demonstrated to an example. However, the air blower may be a fan or a fan having a heat exchanger that performs heat exchange with the outside using fins.

  In the above-described embodiment, an example in which the fan 22 is provided has been described, but the fan 22 is not necessarily provided.

  In the above embodiment, the mode in which the hole H is provided in the placement portion 32 of the heat exchange member 30 has been described as an example, but the hole H may not be provided.

  In the said embodiment, the form which the supply port 20b of the cooler 20 was located in the back of the heat exchange member 30 was demonstrated to an example. However, the arrangement position of the supply port 20b (cooler 20) is not limited to this. In short, the air supplied from the blower may be blown to the X-ray generator or the heat exchange member that exchanges heat with the X-ray generator. For example, air may be blown through a flow path forming member such as a duct.

  In the said embodiment, although the support parts 34 and 36 of the heat exchange member 30 demonstrated as an example the form formed with the member which has heat conductivity, the support parts 34 and 36 do not have heat conductivity. Also good.

  In the above embodiment, in the heat exchange member 30, each of the support portion 34 and the support portion 36 is attached substantially perpendicular to the placement portion 32, and is substantially mutually along the front-rear direction of the shield box 3. The embodiment extending in parallel has been described as an example. However, the support part 34 and the support part 36 may, for example, be inclined in a direction in which the upper end parts are close to each other and have a tapered shape when viewed from the front-rear direction, or the direction in which the front end parts are close to each other in the front-rear direction. And may have a tapered shape as viewed from above. In short, the support part 34 and the support part 36 only need to form a space S below the placement part 32.

  In the above-described embodiment, an example in which the support portions 34 and 36 are plate members has been described. However, the support portions 34 and 36 are not limited to plate members. For example, the support portion may be a column member. From the viewpoint of forming a flow path of air blown from the cooler 20, the support portions 34 and 36 are preferably plate members.

  In the above embodiment, the configuration in which the control board 24 is arranged on one inner side in the width direction of the shield box 3 has been described as an example, but the position where the control board 24 is arranged is not limited to this.

  DESCRIPTION OF SYMBOLS 1 ... X-ray inspection apparatus, 3 ... Shield box (housing | casing), 7 ... X-ray irradiator (X-ray generation part), 20 ... Cooler (blower), 22 ... Fan, 24 ... Control board, 30 ... Heat exchange Member, 32 ... mounting part, 34, 36 ... support part, S ... space.

Claims (4)

An X-ray inspection apparatus in which an X-ray generation unit for generating X-rays is arranged in a housing,
A blower for blowing air ;
A heat exchange member that performs heat exchange with the X-ray generation unit ,
The heat exchange member is
The X-ray generation unit is mounted, and a mounting unit having thermal conductivity,
A pair of support portions that support the mounting portion and form a space below the mounting portion;
The air blower is an X-ray inspection device that blows the air toward the space . A control board for controlling the operation of the device including the X-ray generator;
The X-ray inspection apparatus according to claim 1, wherein the control board is disposed at a position other than between the blower and the X-ray generation unit or the heat exchange member. The blower is a cooler for blowing the cooled the air, X-rays inspection apparatus according to claim 1 or 2. The air blown from the blower, the X-ray examination apparatus, or provided with a fan for blowing air toward the heat exchanger member, X-ray inspection apparatus according to any one of claims 1-3.

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