Inspection device

Abstract

An inspection device (1) having a heat exchanger (10) in which a heat absorbing section (11) and a heat discharging section (12), which are respectively disposed inside and outside a housing (2), are connected by a heat transfer pipe (15), in which the heat discharging section (12) is easily cleaned by increasing the spacing of heat discharging fins (14a) compared to the spacing of heat absorbing fins (13), and the thickness of the heat discharging fins (14a) is set to be greater than the thickness of the heat absorbing fins (13), and the thickness of the heat discharging fins (14a) is set to be greater than the thickness of the heat absorbing fins (13). The heat transfer amount of the heat discharge part 12 is greater than the heat transfer amount of the heat absorption part 11.

Description

Technical Field

[0001] The present invention relates to an inspection device for a heat exchanger including a heat absorbing portion and a heat dissipating portion which are arranged inside and outside a frame and connected by a heat conducting pipe, and more particularly to an inspection device for a heat exchanger which has excellent cleanability because the interval between heat dissipating fins of the heat dissipating portion is larger than the interval between heat dissipating fins of the heat absorbing portion, and has a heat dissipation performance improvement structure for improving a decrease in the amount of heat transfer of the heat dissipating portion caused by the large interval between the heat dissipating fins of the heat dissipating portion, so that the amount of heat transfer of the heat dissipating portion does not become lower than that of the heat absorbing portion, thereby being able to achieve the heat dissipation performance of the heat exchanger required by the inspection device. Background Art

[0002] Patent document 1 below discloses an invention of an X-ray inspection apparatus that does not use an expensive air conditioner, but dissipates heat in the frame to the outside of the frame by a heat exchanger provided in the frame. The interior of the first frame 3 of the X-ray inspection apparatus 1 is divided into a plurality of cooling zones C1 to C4 by a partition wall 16 according to the use limit temperature and the like, and heat sources 17 to 20 having a specific use limit temperature are respectively accommodated in each of the zones C2, C3, and C4. The air flow path B is set in the cooling zone so that the heat sources 19 and 20 with a low use limit temperature are arranged upstream of the heat sources 17 and 18 with a high use limit temperature, so that the cooling efficiency is good, and the heat absorbing part 15a of the heat exchanger 15 is located in the first frame 3, and the heat dissipating part is located in the second frame connected to the outside air, so that there is no protrusion of the heat dissipating part in the entire frame, so the cleanability is good.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2016-109488

[0004] According to the X-ray inspection apparatus described in the above-mentioned Patent Document 1, it is possible to dissipate the heat in the frame to the outside using a heat exchanger instead of using an air conditioner that consumes power, thereby meeting the requirement of power saving. However, since both the heat absorption part and the heat discharge part constituting the heat exchanger are accommodated in the frame, it is necessary to take in the outside air into the frame in order to dissipate the heat outside the frame. This is not a problem as long as the environment in which the X-ray inspection apparatus is installed is clean. However, when the X-ray inspection apparatus is used in a dusty environment in a factory or in an environment similar thereto, there is a problem that the mechanisms and equipment in the frame become dirty due to dust and the like while the air taken into the X-ray inspection apparatus is circulated in the frame.

[0005] In order to solve this problem, the inventors of the present invention have come up with the following idea: in an X-ray inspection device that uses a heat exchanger instead of an air conditioner, in order to prevent air containing dust from being introduced into the frame, a heat exchanger is used in which a heat absorption portion is arranged inside the frame, and a heat exhaust portion is arranged outside the frame, and the heat absorption portion and the heat exhaust portion are connected by a heat pipe that passes through the frame.

[0006] However, if a heat exhaust section is provided outside the frame, when the X-ray inspection apparatus is used in the dusty environment of the aforementioned factory or in a similar environment, air containing dust needs to be supplied to the heat exhaust section. Therefore, dust easily accumulates between the heat exhaust fins, etc., and thus there is a problem with the cleanliness of the heat exhaust section. Summary of the invention

[0007] The present invention is completed in order to solve the problems in the prior art described above, and its purpose is to provide an inspection device having a heat exchanger with a heat absorption part and a heat dissipation part arranged inside and outside the frame and connected with a heat pipe, wherein the cleanliness of the heat dissipation part is high and the heat exchanger possessed by the inspection device has the required heat dissipation performance.

[0008] The inspection device 1 of the first embodiment of the present invention is an inspection device 1 comprising a frame 2 having heat sources 4 and 5 therein and heat exchangers 10a, 10b, and 10c for dissipating heat released from the heat sources 4 and 5 to the outside of the frame 2, wherein the heat exchangers 10a, 10b, and 10c comprise: a heat absorbing portion 11, which is composed of a plurality of heat absorbing fins 13 arranged at a first interval and arranged inside the frame 2; and heat dissipating portions 12a, 12b, and 12c, which are composed of a plurality of heat dissipating fins 13 arranged at a second interval larger than the first interval. The heat dissipation parts 12a, 12b, 12c are composed of a plurality of heat dissipation fins 14a, 14b, 14c, and are arranged on the outside of the frame 2; a plurality of independent heat conduction pipes 15 are formed by penetrating from the inside to the outside of the frame 2, and thermally connecting the heat absorption fins 13 located inside the frame and the heat dissipation fins 14a, 14b, 14c located outside the frame; and a heat dissipation performance improvement structure is arranged on the heat dissipation parts 12a, 12b, 12c, so that the heat transfer of the heat dissipation parts 12a, 12b, 12c is greater than the heat transfer of the heat absorption part 11.

[0009] According to the inspection device of the first mode constructed in this way, among the various conditions that determine the amount of heat transfer, the interval between the fins is such that the heat dissipation fins 14a, 14b, 14c are larger than the heat absorption fins 13, so the heat transfer amount of the heat dissipation parts 12a, 12b, 12c should be lower than the heat transfer amount of the heat absorption part 11. However, the heat dissipation parts 12a, 12b, 12c of the heat exchanger of the inspection device are provided with a heat dissipation performance improvement structure, so there is no significant difference in the amount of heat transfer between the heat dissipation parts 12a, 12b, 12c and the heat absorption part 11, so that the heat inside the frame transferred to the heat absorption part 11 located inside the frame can be reliably dissipated from the heat dissipation parts 12a, 12b, 12c located outside the frame to the outside. Therefore, the intervals between the plurality of heat dissipation fins 14a, 14b, 14c are wider than the intervals between the heat absorption fins 13, thereby achieving high cleanliness that can easily remove foreign matter such as dust accumulated between the heat dissipation fins 14a, 14b, 14c, and also reliably achieving the heat exchange capacity required by the inspection device.

[0010] The inspection device 1 of the second aspect of the present invention is characterized in that, in the inspection device 1 of the first aspect, as the heat dissipation performance improvement structure, the thickness of one of the heat dissipation fins 14b is set to be larger than the thickness of one of the heat absorption fins 13. According to this structure, the thickness of the heat dissipation fin is set to be larger than the thickness of the heat absorption fin, so that the heat dissipation performance required for the heat exchanger as the inspection device can be achieved.

[0011] The inspection device 1 of the third aspect of the present invention is characterized in that, in the inspection device 1 of the first aspect, as the heat dissipation performance improvement structure, the surface area of ​​one of the heat dissipation fins 14c is set larger than the surface area of ​​one of the heat absorption fins 13. According to this structure, the surface area of ​​the heat dissipation fins is set larger than the surface area of ​​the heat absorption fins, so that the heat dissipation performance required for the heat exchanger as the inspection device can be achieved.

[0012] The inspection device 1 of the fourth aspect of the present invention is characterized in that, in the inspection device 1 of any one of the first to third aspects, a heat dissipation cooling fan 20a for discharging air between the plurality of heat dissipation fins to the outside is provided as the heat dissipation performance improvement structure. According to this structure, the heat dissipation performance required for the heat exchanger as the inspection device can be achieved.

[0013] The inspection device 1 of the fifth aspect of the present invention is characterized in that, in the inspection device 1 of the fourth aspect, the heat absorbing portion 11 further includes heat absorbing cooling fans 17 and 18 for circulating air between the plurality of heat absorbing fins, and the air supply force of the heat exhaust cooling fan 20a is set to be greater than the air supply force of the heat absorbing cooling fans 17 and 18. According to this structure, the heat dissipation performance required for the heat exchanger as the inspection device can be achieved.

[0014] The inspection device 1 of the sixth aspect of the present invention is characterized in that, in the inspection device 1 of any one of the first to third aspects, the number of the heat-discharging fins 14a, 14b, 14c is smaller than the number of the heat-absorbing fins 13, and the thickness of the heat-discharging fins 14a, 14b, 14c in the stacking direction is smaller than the thickness of the heat-absorbing fins 13 in the stacking direction. Furthermore, the inspection device 1 of the seventh aspect of the present invention is characterized in that, in the inspection device 1 of the fourth aspect, the number of the heat-discharging fins 14a, 14b, 14c is smaller than the number of the heat-absorbing fins 13, and the thickness of the heat-discharging fins 14a, 14b, 14c in the stacking direction is smaller than the thickness of the heat-absorbing fins 13 in the stacking direction. Furthermore, the inspection device 1 of the eighth aspect of the present invention is characterized in that, in the inspection device 1 of the fifth aspect, the number of the heat dissipation fins 14a, 14b, 14c is less than the number of the heat absorption fins 13, and the thickness of the heat dissipation fins 14a, 14b, 14c in the stacking direction is smaller than the thickness of the heat absorption fins 13 in the stacking direction.

[0015] According to the structures of the sixth to eighth modes, the number of heat exhaust fins 14a, 14b, 14c is smaller than the number of heat absorption fins 13, so that the protruding height of the heat exhaust parts 12a, 12b, 12c can be smaller than the protruding height of the heat absorption part 11, and the second interval of the heat exhaust parts 12a, 12b, 12c can be larger than the first interval of the heat absorption part 11, thereby reducing the overall width dimension of the inspection device and ensuring high cleanliness in the heat exhaust parts 12a, 12b, 12c.

[0016] The inspection device 1 of the ninth aspect of the present invention is characterized in that, in the inspection device 1 of the fifth aspect, the inspection device 1 is an X-ray inspection device that irradiates the inspection object W conveyed by the conveying member 3 with X-rays and inspects the inspection object W based on an X-ray image obtained from the X-rays that have penetrated the inspection object W. Furthermore, the inspection device 1 of the tenth aspect of the present invention is characterized in that, in the inspection device 1 of the eighth aspect, the inspection device 1 is an X-ray inspection device that irradiates the inspection object W conveyed by the conveying member 3 with X-rays and inspects the inspection object W based on an X-ray image obtained from the X-rays that have penetrated the inspection object W.

[0017] According to the structure of the 9th to 10th methods, when it is particularly necessary to effectively release a large amount of heat generated by the X-ray generating device located inside it to the external X-ray inspection device, the effects of the 1st to 8th methods can be obtained, thereby having great practical advantages.

[0018] Effects of the Invention

[0019] According to the present invention, an inspection device can be provided in which a heat exchanger having a heat absorption portion arranged inside a frame and a heat dissipation portion arranged outside the frame and connecting the two with a heat pipe, the heat dissipation portion has high cleanliness, and the heat exchanger possessed by the inspection device has the required heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a partial perspective view of the X-ray inspection apparatus according to the first embodiment as seen from the rear obliquely.

[0021] Figure 2 This is a partially cutaway side view of the X-ray inspection apparatus according to the first embodiment.

[0022] Figure 3 This is a partially cutaway plan view of the X-ray inspection apparatus according to the first embodiment.

[0023] Figure 4 It is magnified Figure 3 The top view of the cutout portion is a view of the heat exchanger with the shell of the heat absorbing part located in the frame removed.

[0024] Figure 5 The first embodiment is Figure 4 The same viewpoint shows a plan view of the heat exchanger of the X-ray inspection apparatus according to the second embodiment.

[0025] Figure 6 The first embodiment is Figure 4 A plan view of the heat exchanger of the X-ray inspection apparatus according to the third embodiment is shown from the same viewpoint.

[0026] Figure 7 The first embodiment is Figure 4 The same viewpoint shows a plan view of a heat exchanger for an X-ray inspection device invented by the inventor of the present application immediately before the present invention was completed. DETAILED DESCRIPTION

[0027] refer to Figure 1 to Figure 4 The X-ray inspection apparatus according to the first embodiment will be described.

[0028] Figure 1 to Figure 3The X-ray inspection device 1 shown has a frame 2 with an X-ray shielding structure. The frame 2 is composed of a relatively large upper frame 2a, a relatively small lower frame 2b, and an intermediate frame 2c that connects the upper frame 2a and the lower frame 2b, and the portion surrounded by the upper frame 2a, the intermediate frame 2c, and the lower frame 2b is set as an inspection space S for the object to be inspected. In the inspection space S, a conveying member 3 for conveying the object to be inspected W is arranged to penetrate the inspection space S in the horizontal direction. An X-ray generator 4, which is a heat source for irradiating X-rays downward, is arranged inside the upper frame 2a. An X-ray detector 5, which is a heat source for detecting X-rays that have penetrated the object to be inspected W, is arranged inside the lower frame 2b.

[0029] like Figure 2 As shown, in the inspection space S, while the inspection object W is transported by the transport member 3, the X-ray generator 4 irradiates the inspection object W with X-rays, and the X-ray detector 5 detects the X-rays that have passed through the inspection object W. Based on the X-ray image obtained from the output signal of the X-ray detector 5, it is possible to check whether the inspection object W includes foreign matter.

[0030] in addition, Figure 1 to Figure 3 The structure of the X-ray inspection apparatus 1 shown is schematic, and schematically shows the X-ray generator 4, the X-ray detector 5, and the conveying member 3. In addition, the illustration of the devices located in the frame 2 other than the heat exchanger described later, the support legs supporting the frame 2, and the X-ray shielding structure of the inspection space S are omitted. The devices and the like in the frame 2 that are omitted from the illustration include a portion that becomes a heat source.

[0031] like Figure 1 to Figure 3 As shown, a heat exchanger 10 a is provided on the upper portion of the rear surface of the housing 2 of the X-ray inspection apparatus 1 . The heat exchanger 10 a is a device for dissipating heat released from a heat source in the housing 2 by guiding it to the outside of the housing 2 .

[0032] like Figure 4 As shown, the heat exchanger 10a includes a heat absorbing portion 11 located inside the frame 2 and a heat dissipating portion 12a located outside the frame 2. The heat absorbing portion 11 is composed of a plurality of (for example, 38) rectangular heat absorbing fins 13 arranged in parallel with the vertical direction at a predetermined interval. The heat dissipating portion 12a is composed of a plurality of (for example, 20) rectangular heat dissipating fins 14a arranged in parallel with the vertical direction at a predetermined interval. The heat absorbing fins 13 and the heat dissipating fins 14a have the same shape and the same surface area. In addition, the heat absorbing fins 13 and the heat dissipating fins 14a are collectively referred to as fins.

[0033] The aforementioned fin interval refers to the length of the gap between two opposing surfaces of adjacent fins and fins. In addition, the interval of the heat dissipation fins 14a (referred to as the second interval) is set wider than the interval of the heat absorption fins 13 (referred to as the first interval). In order to improve the cleanability, the second interval is set larger than the first interval. For example, it can be set to 4 to 5 mm so that an air nozzle can be inserted when air is used for cleaning, and it can be set to about 8 mm so that a water nozzle can be inserted when water is used for cleaning.

[0034] The plurality of heat absorbing fins 13 and heat dissipating fins 14 a are connected and thermally coupled to each other by being penetrated by a plurality of (for example, four groups of two, eight in total) independent heat transfer pipes 15 provided through the frame 2 .

[0035] like Figure 1 to Figure 4 As shown, the heat absorbing part 11 and the heat dissipating part 12a are both covered by a box-shaped shell. The heat absorbing shell 16 covering the heat absorbing part 11 is open only on the left and right sides, and a first heat absorbing cooling fan 17 for suction is installed at one opening, and a second heat absorbing cooling fan 18 for exhaust is installed at the other opening. Figure 1 As shown by arrow A1, the warm air in the frame 2 is forcibly taken into the heat absorption shell 16 by the first heat absorption cooling fan 17, and after passing through the heat absorption fins 13, it is forcibly discharged into the frame 2 outside the heat absorption shell 16 by the second heat absorption cooling fan 18 (in other words, the air circulates between the heat absorption fins 13). The heat dissipation shell 19 covering the heat dissipation part 12a is open only on the upper and lower surfaces, and the exhaust heat cooling fan 20 for extraction is installed in the opening of the lower surface. Figure 1 As shown by arrow A2, the air outside the frame 2, which is lower in temperature than the air inside the frame 2, is forcibly taken into the heat exhaust housing 19 from the upper opening by the heat exhaust cooling fan 20, and after passing through the heat exhaust fins 14a, is forcibly drawn out of the heat exhaust housing 19 from the heat exhaust cooling fan 20 (in other words, the air between the heat exhaust fins 14a is exhausted to the outside of the heat exhaust part). Therefore, the heat generated by the X-ray generator 4 and the like in the frame 2 is transferred from the air inside the frame 2 to the heat absorbing fins 13, transferred from the heat pipe 15 to the heat exhaust fins 14a, and then transferred from the heat exhaust fins 14a to the air outside the frame 2 and dissipated into the atmosphere.

[0036] As mentioned above Figure 1 to Figure 4 As described above, the fin spacing (second spacing) of the heat dissipation fins 14a is larger than the fin spacing (first spacing) of the heat absorption fins 13, so the heat dissipation part 12a located outside the frame 2 has high cleanliness, and water or air can be sprayed between the fins to easily remove dust and other foreign matter.

[0037] Furthermore, the second interval of the heat-discharging fins 14a is larger than the first interval of the heat-absorbing fins 13, but the number of the heat-discharging fins 14a is smaller than the number of the heat-absorbing fins 13, so the dimension (referred to as "height" or "thickness") related to the direction perpendicular to the surface of the fins (referred to as the length direction of the heat-conducting tube 15 or also referred to as the stacking direction of the fins) is smaller than the heat-absorbing part 11. That is, the cleanability required for the heat-discharging part 12a is obtained, and the number and interval of the heat-discharging fins 14a are appropriately set so that the height of the heat-discharging part 12a is smaller than the height of the heat-absorbing part 11.

[0038] According to the heat exchanger 10a, among the conditions that determine the amount of heat transfer, the heat exhaust fins 14a have a larger fin spacing than the heat absorption fins 13, and the number of fins is less than that of the heat absorption fins 13, so the heat transfer of the heat exhaust portion 12a should be lower than that of the heat absorption portion 11. However, as described below, the heat exhaust portion 12a of the heat exchanger 10a is provided with a heat dissipation performance improvement structure, so that this situation does not occur. That is, the heat exhaust cooling fan 20a (refer to Figure 1 and Figure 2 ) A fan with a large air supply force is selected. The heat exhaust cooling fan 20a only needs to have an air supply force capable of supplying a required amount of air to the heat exhaust portion 12a at a required speed so that the heat transfer of the heat exhaust portion 12a does not fall below the heat transfer of the heat absorption portion 11. In this way, heat transfer from the heat absorption portion 11 to the heat exhaust portion 12a is performed well, and as a result, the heat dissipation performance of the heat exchanger 10a can be set to the level required for the X-ray inspection device 1.

[0039] In addition, as a heat dissipation performance improvement structure, the heat dissipation performance can be improved by using a material having a higher thermal conductivity than the heat absorbing fin 13 as the material of the heat dissipation fin 14a. For example, when the heat absorbing fin 13 is made of aluminum, by setting the material of the heat dissipation fin 14a to silver or copper having a higher thermal conductivity than aluminum, the heat dissipation performance of the heat exchanger can be improved, and the air supply force of the heat dissipation cooling fan can be suppressed compared to the case where the heat absorbing fin 13 and the heat dissipation fin 14 are made of the same material. Therefore, the heat dissipation cooling fan 20a having a large air supply force is not used, and can be replaced with a heat dissipation cooling fan 20 having a smaller air supply force than the heat dissipation fin 13.

[0040] refer to Figure 5 The heat exchanger 10b mounted on the X-ray inspection apparatus 1 of the second embodiment will be described. In addition, regarding the same parts as the first embodiment, the description of the first embodiment is appropriately cited to avoid duplication, and the description will focus on the parts that are different from the first embodiment and are the characteristics of the second embodiment.

[0041] like Figure 5 As shown, the structure of the heat absorbing part 11 of the heat exchanger 10b is the same as that of the first embodiment. In the structure of the heat dissipating part 12b, the surface area of ​​the heat dissipating fin 14b is substantially the same as that of the heat dissipating fin 14a of the first embodiment, and therefore, is also the same as that of the heat dissipating fin 13. However, the thickness of the heat dissipating fin 14b is thicker than that of the heat dissipating fin 14a of the first embodiment. In addition, the point that the interval (second interval) of the heat dissipating fin 14b is larger than the interval (first interval) of the heat dissipating fin 13 and the number of the heat dissipating fins 14b are the same as those of the first embodiment, but the second interval of the second embodiment is smaller than the second interval of the first embodiment.

[0042] As described above, the heat exhaust portion 12b of the heat exchanger 10b of the second embodiment has a greater thickness than that of the first embodiment, but the number of heat exhaust fins 14b is the same and the second interval is smaller, so the height of the heat exhaust portion 12b is substantially the same as that of the first embodiment, resulting in a compact shape with substantially the same protrusion from the back of the frame 2. However, when the heat exhaust cooling fan 20a with a large air supply force of the first embodiment is replaced with a heat exhaust cooling fan 20 with a smaller air supply force than the heat exhaust cooling fan 20, the heat transfer amount of the heat exhaust portion 12b should be lower. However, the heat exhaust portion 12b of the heat exchanger 10b is provided with a heat dissipation performance improvement structure as described below, so that situation will not occur. That is, as Figure 5 As shown, the thickness of the heat-dissipating fins 14b of the second embodiment is set to be larger than the thickness of the heat-absorbing fins 13. The heat-dissipating fins 14b can store more heat than the heat-absorbing fins 13. Therefore, even if the second interval of the heat-dissipating fins 14b is larger than the interval (first interval) of the heat-absorbing fins 13, the heat transfer amount of the heat-dissipating portion 12b will not be significantly lower than the heat transfer amount of the heat-absorbing portion 11. Therefore, heat transfer from the heat-absorbing portion 11 to the heat-dissipating portion 12b is performed well. As a result, the heat dissipation performance of the heat exchanger 10b can reach a desired level.

[0043] refer to Figure 6 The heat exchanger 10c mounted in the X-ray inspection apparatus 1 of the third embodiment will be described. The description of the first embodiment will be appropriately cited to avoid duplication regarding the same parts as the first embodiment, and the description will focus on the parts that are different from the first embodiment and are the characteristics of the third embodiment.

[0044] like Figure 6As shown, the structure of the heat absorbing part 11 of the heat exchanger 10c is the same as that of the first embodiment and the second embodiment. In the structure of the heat dissipation part 12c, the surface area of ​​the heat dissipation fin 14c is wider than that of the heat dissipation fin 14a of the first embodiment or the heat dissipation fin 14b of the second embodiment, and is larger than the surface area of ​​the heat dissipation fin 13. The thickness of the heat dissipation fin 14c is thinner than that of the heat dissipation fin 14b of the second embodiment, and is the same as the heat dissipation fin 14a of the first embodiment, and is therefore the same as the heat dissipation fin 13. In addition, the interval (second interval) of the heat dissipation fin 14c is larger than the interval (first interval) of the heat dissipation fin 13, which is larger than that of the second embodiment and is the same as that of the first embodiment. In addition, the number of the heat dissipation fins 14c is 20, which is the same as the heat dissipation fin 14a of the first embodiment.

[0045] As described above, the heat exchanger 10c of the third embodiment has the same second interval, the number of heat exhaust fins 14c, and the same thickness as the first embodiment, and the heat exhaust portion 12c has the same height as the first embodiment and has a width, so that the device has a compact appearance. However, when the heat exhaust cooling fan 20a with a large air supply force in the first embodiment is replaced with the heat exhaust cooling fan 20 with a smaller air supply force than the heat exhaust cooling fan 20a, the heat transfer amount of the heat exhaust portion 12c should be reduced. However, in the heat exhaust portion 12c of the heat exchanger 10c, as described above, the area of ​​the heat exhaust fin is set to be larger as a heat dissipation performance improvement structure, so that this situation does not occur. According to the heat dissipation performance improvement structure in which the area of ​​the heat exhaust fin is set to be larger, the heat transfer amount of the heat exhaust portion 12c does not significantly decrease from the heat transfer amount of the heat absorption portion 11, so that the heat conduction from the heat absorption portion 11 to the heat exhaust portion 12c is well performed, and as a result, the heat dissipation performance of the heat exchanger 10c can be set to the level required as the X-ray inspection device 1.

[0046] In addition, in the above embodiment, the air supply force of the heat exhaust cooling fan 20a is preferably set to be greater than the air supply force of the first heat absorption cooling fan 17 or the second heat absorption cooling fan 18. Moreover, in a structure having only the heat exhaust cooling fan 20a among the three cooling fans 20a, 17, and 18, as long as the heat transfer amount of the heat exhaust part 12a is greater than the heat transfer amount of the heat absorption part 11, the first heat absorption cooling fan 17 and the second heat absorption cooling fan 18 may be omitted.

[0047] Finally, reference Figure 7 In the process of research and development of the present invention aimed at solving the aforementioned “technical problem to be solved by the invention”, a heat exchanger 10 of an inspection device invented by the inventors of the present application at a stage before the completion of the present invention will be described.

[0048] In the heat exchanger 10, the structure of the heat absorbing part 13 is substantially the same as that of the first to third embodiments, and the thickness of the heat dissipation fins 14 is substantially the same as that of the first and third embodiments, the number of the heat dissipation fins 14 is the same as that of the first to third embodiments, and the surface area is substantially the same as that of the first embodiment, but the intervals between the heat dissipation fins 14 are wider than those of the embodiments, so the cleanliness of the heat dissipation part 12 is higher than that of the embodiments, but the heat transfer amount of the heat dissipation part 12 is smaller than that of the heat dissipation part 11, and the heat dissipation performance of the heat exchanger 10 provided as the inspection device becomes insufficient. In addition, the height of the heat dissipation part 12 is greater than that of the heat dissipation part 11, and the protrusion from the outer surface of the frame 2 becomes larger, resulting in problems in the appearance of the inspection device or the positioning when it is installed.

[0049] So, in Figure 7 In the structural example shown, high cleanliness is achieved by increasing the spacing between the heat exhaust fins 14, but there is no structure for compensating for the low heat transfer of the heat exhaust portion 12 resulting from excessively increasing the spacing between the heat exhaust fins 14 and ensuring the heat dissipation performance of the heat exchanger 10, that is, the characteristic of each embodiment, namely, the heat dissipation performance improvement structure.

[0050] The inventor of this application aims to further solve Figure 7 The invention has conducted in-depth research to solve the problems of the structural example shown in the figure, and as a result, it has been realized that it is necessary to improve the heat dissipation performance of the heat exchanger 10, and has successfully realized this necessity in various specific ways as shown in the embodiments. As a result, not only is the cleanliness of the heat dissipation part excellent, but also an inspection device that fully ensures the heat dissipation performance of the heat exchanger set in the inspection device can be realized. In addition, the heat dissipation part of the heat exchanger does not protrude significantly from the outer surface of the frame, so it is possible to realize an inspection device with an aesthetically pleasing outer shape that is convenient for positioning or handling during installation.

[0051] Explanation of symbols

[0052] 1-X-ray inspection device, 4-heat source, i.e., X-ray generator, 5-heat source, i.e., X-ray detector, 10a, 10b, 10c-heat exchanger, 11-heat absorption part, 12a, 12b, 12c-heat exhaust part, 13-heat absorption fins, 15-heat conduction pipe, 17-first heat absorption cooling fan, 18-second heat absorption cooling fan, 20, 20a-heat exhaust cooling fans.

Claims

1. An inspection device, comprising a frame (2) having a heat source inside and a heat exchanger (10a, 10b, 10c) for dissipating heat released from the heat source to outside the frame, characterized in that: The heat exchanger has: The heat absorbing part (11) is composed of a plurality of heat absorbing fins (13) arranged at a first interval and is arranged inside the frame; A heat dissipation portion (12a, 12b, 12c) is composed of a plurality of heat dissipation fins (14a, 14b, 14c) arranged at a second interval larger than the first interval, and is arranged outside the frame; A plurality of independent heat conducting pipes (15) are formed to penetrate from the inside to the outside of the frame and thermally connect the heat absorbing fins located inside the frame and the heat dissipating fins located outside the frame; and The heat dissipation performance improvement structure is arranged on the heat dissipation part so that the heat transfer amount of the heat dissipation part is greater than the heat transfer amount of the heat absorption part.

2. The inspection device according to claim 1, characterized in that: As the heat dissipation performance improving structure, the thickness of one of the heat dissipation fins is set larger than the thickness of one of the heat absorption fins.

3. The inspection device according to claim 1, characterized in that: As the heat dissipation performance improving structure, the surface area of ​​one of the heat dissipation fins is set larger than the surface area of ​​one of the heat absorption fins.

4. The inspection device according to any one of claims 1 to 3, characterized in that: As the heat dissipation performance improvement structure, a heat dissipation cooling fan (20a) for discharging air between the plurality of heat dissipation fins to the outside is provided.

5. The inspection device according to claim 4, characterized in that: The heat absorbing portion is further provided with a heat absorbing cooling fan (17, 18) for circulating air between the plurality of heat absorbing fins. The air blowing force of the heat exhaust cooling fan is set to be greater than the air blowing force of the heat absorption cooling fan.

6. The inspection device according to any one of claims 1 to 3, characterized in that: The number of the heat-releasing fins is smaller than the number of the heat-absorbing fins, and the thickness of the heat-releasing fins in the stacking direction is smaller than the thickness of the heat-absorbing fins in the stacking direction.

7. The inspection device according to claim 4, characterized in that: The number of the heat-releasing fins is smaller than the number of the heat-absorbing fins, and the thickness of the heat-releasing fins in the stacking direction is smaller than the thickness of the heat-absorbing fins in the stacking direction.

8. The inspection device according to claim 5, characterized in that: The number of the heat-releasing fins is smaller than the number of the heat-absorbing fins, and the thickness of the heat-releasing fins in the stacking direction is smaller than the thickness of the heat-absorbing fins in the stacking direction.

9. The inspection device according to claim 5, wherein: The inspection device is an X-ray inspection device that irradiates an inspection object (W) transported by a transport member (3) with X-rays and inspects the inspection object based on an X-ray image obtained from the X-rays that have passed through the inspection object.

10. The inspection device according to claim 8, wherein: The inspection device is an X-ray inspection device that irradiates an inspection object (W) transported by a transport member (3) with X-rays and inspects the inspection object based on an X-ray image obtained from the X-rays that have passed through the inspection object.

Images