JPWO2015111139A1 - Electronic equipment and blower - Google Patents

Abstract

The blower 60 includes a duct 64 that allows air sucked from the air inlet 71 through the opening 72 to flow in the direction opposite to the rotation direction of the fan 61. In the blower device 60, the fan 61 is arranged in a direction perpendicular to the opening 72, the restriction wall 67 is formed in parallel, and the opening 72 narrow with respect to the area (width) of the fan 61 is formed. The duct 64 is provided. In the blower 60, an arrangement space 74 in which members can be arranged is formed outside the duct 64 by the restriction wall portion 67.

Description

  The present invention relates to an electronic device and a blower.

  Conventionally, an electronic device includes an intake duct in which an intake fan and an air outlet are formed, and an exhaust duct in which an air inlet and an exhaust fan are formed. There has been proposed one that flows along an air flow path that obliquely crosses the top and is discharged from the exhaust duct to the outside of the housing (see, for example, Patent Document 1). In this device, a paper discharge unit for placing paper heated through the fixing process is disposed on the air flow path, and the air flowing through the air flow path suppresses heating of the developer container. You can do that.

JP 2011-22336 A

  However, in the electronic device described above, the flow rate of the air blow and the noise of the fan during the air blow are not specifically considered. For example, when the duct flow area is limited, the fan noise may increase, and the fan noise may be allowed with an emphasis on cooling performance, or the temperature may increase with an emphasis on quietness. The only solution was to reduce the fan speed while allowing it. As described above, in the electronic device, it has been desired to further improve the air blowing characteristic and the noise characteristic.

  The present invention has been made to solve such a problem, and a main object of the present invention is to provide an electronic device and an air blower capable of further improving the air blowing characteristic and the noise characteristic.

The electronic device of the present invention is
A fan that blows the gas sucked from the air inlet to the air outlet and a duct from the air inlet to the fan, and the gas sucked from the air inlet through the opening is circulated in the direction opposite to the rotation direction of the fan. And an air blower having a distribution regulating unit.

  In this electronic device, the flow restriction unit causes the gas sucked from the air inlet through the opening to flow in the direction opposite to the rotation direction of the fan. As described above, when the rotation direction of the fan and the flow direction of the gas from the suction port are reversed, the fan rotation direction is larger than that in the case where the rotation direction of the fan and the flow direction of the gas from the suction port are the same direction. It is possible to further improve the characteristics (air flow rate) and noise characteristics. Here, “gas” is not particularly limited as long as it is a medium that blows air, and examples thereof include air.

  In the electronic device according to the aspect of the invention, the fan is arranged to circulate the gas in a direction different from the direction of the gas flow in the opening, and the flow restriction portion is on a side where the fan is directed by rotation. It is also possible to have the duct in which the opening narrower than the fan area is formed. In this way, by narrowing the opening, the direction of rotation of the fan and the direction of gas flow from the suction port can be reversed in a relatively simple manner. The phrase “narrow with respect to the fan region” may be narrow with respect to the fan blowing area or narrow with respect to the fan width.

  In the electronic apparatus of the present invention, the fan may be disposed in a direction perpendicular to the opening. At this time, it is preferable that the distribution restriction part includes the duct in which a narrow opening with respect to the area of the fan is formed on a side different from a side where the fan entrains the gas. The “vertical direction” includes a case where it is approximately vertical, and for example, the angle formed by the fan and the opening may be in a range of 80 ° to 100 °.

  In the electronic device according to the aspect of the invention, the distribution restriction unit may include the duct in which a restriction member that narrows the opening with respect to the fan area is formed along with the opening. This restricting member may be a member disposed on the wall surface of the duct, or may be formed by the wall surface of the duct.

  In the electronic apparatus according to the aspect of the invention, the fan is disposed in a direction perpendicular to the opening, and the flow restricting unit rotates the fan counterclockwise as viewed from the air inlet side. In the configuration in which the opening is disposed below, the opening is formed in the left region of the duct as viewed from the inlet side, and the restriction member is formed in the right region of the duct, or When the opening is disposed below in the configuration in which the fan rotates in the clockwise direction when viewed from the intake port side and blows air, the flow restriction unit is disposed in the right region of the duct as viewed from the intake port side. An opening may be formed and a restricting member may be formed in the left region of the duct.

  In the electronic device according to the aspect of the invention including the restriction member, the distribution restriction unit may be configured such that a disposition space in which the member included in the electronic device can be disposed is formed outside the duct by the restriction member. Good. If it carries out like this, while a ventilation characteristic and a noise characteristic can be improved more, arrangement | positioning space can be used effectively.

  In the electronic device according to the aspect of the invention, the fan is arranged to circulate the gas in the same direction as the gas flow direction in the opening, and the flow restriction portion blocks a part of the duct. A restricting member that circulates the sucked gas in a direction opposite to the rotation direction of the fan may be formed. In this way, a part of the duct is closed with the regulating member and the opening is narrowed, so that the rotation direction of the fan and the flow direction of the gas from the suction port can be reversed in a relatively simple manner. At this time, the distribution restriction unit may be configured such that two or more restriction members are formed in the duct. If it carries out like this, it will be easy to make the rotation direction of a fan and the distribution direction of the gas from an inlet port into a reverse direction. Further, the distribution restriction unit may be formed with the restriction member in which a tip of the restriction member is inclined toward the fan side. If it carries out like this, it will be easy to make the rotation direction of a fan and the distribution direction of the gas from an inlet port into a reverse direction.

  In the electronic device according to the aspect of the invention including the restriction member, the restriction member may be an electronic substrate as a cooling target. In this way, since the object to be cooled is used, the configuration can be simplified and the air blowing characteristics and noise characteristics can be further improved.

  In the electronic device of the present invention, the distribution restriction part may include the duct having two or more openings. For example, if two openings are provided diagonally, it is preferable that the sucked gas is easily circulated. At this time, the fan is arranged to circulate the gas in a direction different from the gas flow direction in the opening, and the opening is formed on a side surface of the duct. Good.

  In the electronic device according to the present invention, the distribution restriction unit is disposed in the duct, and is configured to distribute the sucked gas in a direction opposite to the rotation direction of the fan by forcibly supplying the gas into the duct. It is good also as what has a supply part. If it carries out like this, a ventilation part and a noise characteristic can be improved more using a supply part.

  The electronic device of the present invention may include a mounting related processing unit that executes a mounting related process related to a process of mounting a component on a board. In other words, the electronic device of the present invention may be a mounting related processing device including a mounting related processing unit. If it carries out like this, in a device which performs mounting related processing, a ventilation characteristic and a noise characteristic can be improved more. At this time, the mounting-related processing unit may be one or more of a mounting processing unit for mounting a component on a substrate and a coating processing unit for applying a viscous fluid used when the component is disposed on the substrate to the substrate. Good. That is, the electronic apparatus of the present invention may be a mounting processing apparatus including a mounting processing unit or a coating processing apparatus including a coating processing unit. For example, the application processing unit may be a unit that applies an adhesive for fixing a component to the substrate, or may be a unit that prints a solder paste on the substrate.

  The blower of the present invention has a fan that blows the gas sucked from the intake port to the exhaust port, and a duct that has a duct from the intake port to the fan and sucks the gas sucked from the intake port through the opening. A distribution regulating unit that circulates in a direction opposite to the direction. In this air blower, the air blowing characteristic and the noise characteristic can be further improved as in the above-described electronic apparatus. In this blower, various aspects of the electronic device described above may be adopted, and a configuration that realizes each function of the electronic device described above may be added.

2 is an explanatory diagram showing an outline of a configuration of a component mounting system 10. FIG. Explanatory drawing of the back surface of the mounting apparatus 11, and the air blower 60. FIG. The exploded perspective view of the air blower 60. FIG. The disassembled perspective view of another air blower 60B. The disassembled perspective view of another air blower 60C. The disassembled perspective view of another air blower 60D. The disassembled perspective view of another air blower 60E. Explanatory drawing of the measurement result of the flow velocity, flow volume, and noise of Experimental Examples 1-4.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing an outline of the configuration of the component mounting system 10. FIG. 2 is an explanatory diagram of the back surface of the mounting device 11 and the blower device 60. FIG. 3 is an exploded perspective view of the blower 60. In the present embodiment, the left-right direction (X-axis), the front-rear direction (Y-axis), and the up-down direction (Z-axis) are as shown in FIGS. The mounting process includes a process of placing, mounting, inserting, joining, and bonding components on a substrate.

  The component mounting system 10 includes a mounting apparatus 11 connected to the LAN 12 and configured as a mounting line, and a management computer 80 connected to the LAN 12 and managing information on components to be mounted. In the component mounting system 10, a plurality of mounting apparatuses 11 that respectively perform a mounting process for mounting electronic components (hereinafter referred to as “components”) on a substrate 16 are arranged from upstream to downstream (from left to right in FIG. 1). In FIG. 1, only one mounting apparatus 11 is shown. The management computer 80 is a computer that manages information of a plurality of mounting apparatuses 11 and includes an HDD that stores mounting condition information used for mounting processing of the mounting apparatus 11.

  The mounting apparatus 11 includes a substrate transport unit 20 that transports the substrate 16, a substrate support unit 25 that supports the substrate 16 from the lower surface side, and a mounting unit 30 that includes a head unit 35 that collects components and moves them onto the substrate 16. I have. In addition, the mounting apparatus 11 includes a supply unit 50 having a reel 51 that accommodates components, a blower 60 (see FIGS. 2 and 3) that cools the unit disposed in the housing, and an illustration that performs various controls. And a control device that does not. The substrate transport unit 20 includes a conveyor belt and a fixing device, transports the substrate 16 from left to right, and fixes the transported substrate 16 at a predetermined position. The substrate support unit 25 includes a plurality of support pins that support the substrate 16 from below, and supports the substrate 16 from the back side of the substrate 16 that is transported and fixed by the substrate transport unit 20. The head moving unit 30 includes an X-axis slider, a Y-axis slider, and a drive motor, and allows the head unit 35 to move to the XY plane. On the lower surface side of the head unit 35, a head 40 having a plurality of nozzles for sucking parts is mounted. The head unit 35 is lifted and lowered in the Z-axis direction (vertical direction) orthogonal to the X-axis and Y-axis directions by a lifting device using a Z-axis motor (not shown) as a drive source. The supply unit 50 has a plurality of feeders 52 on which reels 51 containing components are mounted. The components are supplied from the reels 51 to the head unit 35. The control device is configured as a microprocessor centered on a CPU. This control device is electrically connected to the substrate transport unit 20, the substrate support unit 25, the head moving unit 30, the head unit 35, the supply unit 50, the blower 60, and the like, and exchanges signals with these.

  The blower 60 is configured as a cooling device that performs cooling by exhausting air around the cooling target such as a drive motor of the head moving unit 30 to the outside of the mounting device 11, for example. As shown in FIGS. 2 and 3, the blower 60 includes a fan 61 that blows air sucked from the intake port 71 to the exhaust port 73, and a duct 64 formed from the intake port 71 to the fan 61. . The blower 60 blows air from the lower side where the object to be cooled is disposed to the back side of the housing 15. The duct 64 constitutes a flow regulating unit that circulates the air sucked from the air inlet 71 through the opening 72 in the direction opposite to the rotation direction of the fan 61 (fan blade 63).

  The fan 61 includes a cylindrical outer frame 61a having a rectangular opening, and a fan blade 63 disposed inside the outer frame 61a and connected to a rotating shaft 62 of the motor. The fan 61 is configured as a propeller fan that blows air along the rotation shaft 62 as the fan blade 63 turns. The fan blade 63 rotates in the counterclockwise direction (clockwise from the exhaust port 73 side in FIGS. 2 and 3) when viewed from the intake port 71 side (upstream side of the fan 61) and blows air to the exhaust port 73 side. Each blade is formed. As shown in FIG. 3, the duct 64 has an intake wall portion 65, a cover wall portion 66, and a restriction wall portion 67. The intake wall portion 65 is a wall portion formed in the vertical direction and forms an intake port 71. The cover wall portion 66 forms a hood that covers the front surface of the fan 61. The restriction wall portion 67 is formed so as to block a part of the bottom surface side of the cover wall portion 66 from the intake wall portion 65. The duct 64 has a remaining portion on the lower surface side of the hood (FIG. 3) when a part of the lower surface side of the hood formed by the cover wall portion 66 (right side of the housing in FIG. 3) is closed by the restriction wall portion 67. An opening 72 is formed on the left side of the housing. The opening 72 is formed as a region having a narrower width than the region of the fan 61 (the width of the fan 61). In other words, the flow restricting portion has a duct 64 in which a restricting wall portion 67 that narrows the opening 72 with respect to the area (width) of the fan 61 is formed along with the opening 72. The restriction wall portion 67 is formed in the direction of the opening surface of the opening portion 72, and forms the wall surface of the duct 64 together with the intake wall portion 65 and the cover wall portion 66.

  In the blower device 60, an opening 72 is formed on the lower surface of the hood formed by the cover wall portion 66 on the side where the fan blade 63 faces by rotation, and the restriction wall portion 67 is formed on the side where the fan blade 63 moves away by rotation. (See solid arrows in FIG. 3). In other words, the flow restricting portion has a restricting wall portion 67 formed on the side where the fan blade 63 entrains air, and the region (width) of the fan 61 is different from the side where the fan blade 63 entrains air (extruding side). On the other hand, it has a duct 64 in which a narrow opening 72 is formed. In the blower 60, the fan 61 is disposed so as to circulate air in a direction (backward direction) different from the air flow direction (upward direction) in the opening 72. That is, the fan 61 is disposed perpendicular to the opening 72 (the opening surface thereof). The “vertical direction” may be approximately vertical. For example, the angle between the fan 61 and the opening 72 may be in a range of 80 ° to 100 °. The duct 64 of the blower 60 is formed with a fan mounting portion 69 that is a space into which the fan 61 is fitted. When the fan 61 is fitted into the fan mounting portion 69 of the duct 64, the wall surface of the fan mounting portion 69 contacts the side surface and part of the front surface of the outer frame 61 a of the fan 61, and the air inlet 71, the opening 72, and the air outlet 73. Communicate in a confidential state.

  In the blower 60, a fan 61 is disposed in a direction perpendicular to the opening 72, and the fan blade 63 rotates in a counterclockwise direction when viewed from the intake port 71 side to blow air. Further, the duct 64 has an opening 72 formed in the left region of the duct 64 when viewed from the intake port 71 side and a restriction wall 67 formed in the right region of the duct 64 when the opening 72 is disposed below. ing. In the blower device 60, an arrangement space 74 in which a member included in the mounting device 11 can be arranged is formed outside the duct 64 by a restriction wall portion 67. In the mounting apparatus 11, wiring such as a drive motor of the head moving unit 30 disposed in the upper part of the housing 15 is disposed in the arrangement space 74.

  Next, the operation of the mounting apparatus 11 of the present embodiment configured as described above, first, the mounting process of the mounting apparatus 11 will be described. When the control device of the mounting device 11 receives a command to start mounting the component on the board 16, the control device moves the component housed on the reel 51 of the supply unit 50 to a predetermined sampling position, and the head 40 comes to the sampling position. Thus, the head moving unit 30 is controlled. Subsequently, the control device lowers the head 40, sucks the component onto the suction nozzle of the head 40, then lifts the head 40, and moves the head so that the component comes right above a predetermined arrangement position of the substrate 16. The unit 30 is controlled. Then, the control device lowers the head 40 at that position, releases the component, and places the component at a predetermined position on the board 16. In the mounting apparatus 11, the driving motor of the head moving unit 30 that generates heat in the mounting process is cooled by being ventilated by the blower 60.

  Next, the operation of the blower 60 will be described. The control device of the mounting device 11 drives the motor of the blower 60 after the device is started. In the blower 60, when the motor rotates, the fan blade 63 rotates counterclockwise as viewed from the intake port 71 side (see the hatched arrow in FIG. 3). Then, the pressure is reduced by the fan 61 and air flows into the duct 64 from the air inlet 71. At this time, the air flowing into the duct 64 through the opening 72 flows toward the fan 61 while rotating in the direction opposite to the rotation direction of the fan blade 63 due to the arrangement relationship between the opening 72 and the restriction wall 67 (see FIG. 3 (see dashed line arrow 3). As described above, when air is supplied to the fan 61 while rotating in the direction opposite to the rotation direction of the fan blade 63, the rotation direction of the fan blade 63 and the rotation direction of the air from the suction port 71 are the same direction. As compared with the above, it is possible to further increase the air flow rate and to further improve the quietness.

  Here, the correspondence between the components of the present embodiment and the components of the present invention will be clarified. The fan 61 of the present embodiment corresponds to a fan, the duct 64 corresponds to a duct and a flow restricting portion, the opening 72 corresponds to an opening, the restricting wall portion 67 corresponds to a restricting member, and the arrangement space 74 is formed. It corresponds to an arrangement space, the blower 60 corresponds to a blower, and the mounting device 11 corresponds to an electronic device.

  In the air blower 60 described above, the air that has been sucked from the air inlet 71 through the opening 72 is circulated in the direction opposite to the rotational direction of the fan 61 by the flow restricting unit. As compared with the case where the distribution direction of the air is the same, the air blowing characteristic (air blowing amount) and the noise characteristic can be further improved. Moreover, since the fan 61 is arrange | positioned so that the fan 61 may distribute | circulate air in the direction (perpendicular direction) different from the distribution direction of the air in the opening part 72, the compactization of an apparatus can be achieved more. Further, since the blower device 60 includes the duct 64 in which the opening 72 having a narrow width with respect to the width of the fan 61 is formed, the rotation direction of the fan 61 and the air from the suction port 71 are reduced by narrowing the opening 72. The distribution direction can be reversed in a relatively simple manner. Furthermore, since the flow restricting portion includes the duct 64 in which the restricting wall portion 67 that narrows the opening 72 is formed along with the opening 72, the rotation direction of the fan 61 is determined using the wall surface of the duct 64. The flow direction of the air from the suction port 71 can be reversed in a relatively simple manner. And in the air blower 60, since the arrangement | positioning space 74 in which a member can be arrange | positioned is formed in the exterior of the duct 64 by the control wall part 67, while being able to improve a ventilation characteristic and a noise characteristic more, it arrange | positions. Space can be used effectively.

  It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the embodiment described above, the fan 61 is disposed perpendicular to the opening 72, but if air is circulated in a direction different from the flow direction in the opening 72, In particular, they may be arranged at any angle. Alternatively, the fan 61 may be disposed in parallel to the opening 72. At this time, the distribution regulating unit may circulate the air sucked from the air inlet through the opening in the direction opposite to the rotation direction of the fan.

  In the above-described embodiment, the regulation wall portion 67 that narrows the opening 72 with respect to the area of the fan 61 has the duct 64 formed alongside the opening 72. The air is not particularly limited as long as the air sucked through the air is circulated in the direction opposite to the rotation direction of the fan 61.

  In the above-described embodiment, the arrangement space 74 in which members can be arranged is formed outside the duct 64 by the restriction wall portion 67, but the arrangement space 74 may not be formed. Even in this case, the air blowing characteristic and the noise characteristic can be further improved. In the above-described embodiment, the restriction wall portion 67 is formed by the wall portion of the duct 64. However, the restriction wall portion 67 is not particularly limited thereto, and the restriction member is provided separately from the wall portion member. Also good.

  In embodiment mentioned above, although demonstrated as the air blower 60 which has the inlet port 71 opened below and the exhaust port 73 opened in the back side of the housing | casing 15, if it can ventilate to cool a cooling object, The opening direction of the intake port 71 and the exhaust port 73 is not particularly limited.

  In the above-described embodiment, the air around the object to be cooled has been described as the blower 60 that exhausts the air around the mounting device 11, that is, cools the object to be cooled by ventilating the inside of the housing 15. A blower that cools the cooling target by directly applying air to the cooling target may be used. Even in this case, the same effect as that of the above-described embodiment can be obtained.

  For example, the air blower of this invention has the aspect shown below other than embodiment mentioned above. 4 to 7 are exploded perspective views of air blowing devices 60B to 60E different from the air blowing device 60, respectively. In addition, in the following other examples, about the structure similar to the air blower 60 mentioned above, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  As shown in FIG. 4, the blower 60 </ b> B has the same structure as the blower 60 except that the blower 60 </ b> B is configured symmetrically with the blower 60. That is, the air blower 60B has a right region of the duct 64B when viewed from the air inlet 71B side when the opening 72B is disposed below in a configuration in which the fan 61B rotates clockwise as viewed from the air inlet 71B. An opening 72B is formed in the left and a restricting member 67B is formed in the left region of the duct 64B. Even in this case, since the duct 64B circulates the air sucked from the air inlet 71B through the opening 72B in the direction opposite to the rotation direction of the fan 61B, the air blowing characteristic and the noise characteristic can be further improved.

  As shown in FIG. 5, the blower 60 </ b> C includes a cover wall portion 66 </ b> C formed as a hood that covers the front surface of the fan 61, and a duct 64 </ b> C in which two openings 72 </ b> C are formed on the side surface of the cover wall portion 66. I have. The opening 72C is formed on the diagonal of the cover wall 66C. The opening 72C is also an intake port. The duct 64C has an opening 72C formed on the lower surface of the hood on the side where the fan blade 63 is rotated, and a restriction wall portion 67C is formed on the side where the fan blade 63 is moved away by rotation. In other words, the distribution restriction part has a duct 64C in which a restriction wall part 67C is formed on the side where the fan blade 63 entrains air. In addition, the flow restricting portion includes a duct 64 </ b> C in which an opening 72 </ b> C narrower than the region (width) of the fan 61 is formed on a side (extruded side) different from the side on which the fan blade 63 entrains air. Even in this case, since the air sucked through the opening 72C, which is the air inlet of the duct 64C, is circulated in the direction opposite to the rotation direction of the fan 61, the air blowing characteristic and the noise characteristic can be further improved. Further, since the duct 64C has two openings 72C diagonally, it is preferable that the sucked air is easily circulated.

  As shown in FIG. 6, the blower 60D has a duct 64D having a cylindrical wall portion 65D having a rectangular opening, and a regulating member 67D disposed on the opening 72D side on the outer peripheral edge of the wall portion 65D. It has. The opening 72D is also an intake port. In the blower 60D, the fan 61 is arranged to circulate air in the same direction as the flow direction in the opening 72D, and the flow regulating unit closes a part of the duct 64D and sucks the sucked air into the fan 61. A restricting member 67D that is circulated in a direction opposite to the rotation direction is formed. As described above, since the air sucked by the duct 64D through the opening 72D is circulated in the direction opposite to the rotation direction of the fan 61, the air blowing characteristic and the noise characteristic can be further improved. Further, by partially closing the duct with the restricting member 67D and narrowing the opening 72D, the rotation direction of the fan 61 and the gas flow direction from the suction port can be reversed in a relatively simple manner. Two restricting members 67D are formed in the duct 64D. For this reason, it is easy to make the rotation direction of the fan 61 and the flow direction of the air from the suction port reverse. Further, the regulating member 67D is formed such that the tip thereof is inclined toward the fan 61 side. For this reason, in the air blower 60D, it is easy to make the rotation direction of a fan and the flow direction of the gas from a suction port into a reverse direction. In this blower 60D, it is sufficient that at least one regulating wall 67D is formed, and the tip thereof does not have to be inclined toward the fan 61. Further, for example, the regulating member 67D may be an electronic substrate as a cooling target. In this way, since the object to be cooled is used, the configuration can be simplified and the air blowing characteristics and noise characteristics can be further improved.

  As shown in FIG. 7, the blower device 60E is inhaled by forcibly supplying air into the duct 64E, which is disposed on the outer peripheral side of the wall portion 65E and the cylindrical wall portion 65E having a rectangular opening. A duct 64 </ b> E having a supply part 67 </ b> E for circulating air in the direction opposite to the rotation direction of the fan 61 is provided. For example, the supply unit 67 </ b> E may have a built-in fan, or may have a structure that takes in air from the downstream of the fan 61. The supply part 67E is disposed on the diagonal of the wall part 65E. In the blower 60E, the opening 72E is also an intake port, and the fan 61 is arranged to circulate air in the same direction as the flow direction in the opening 72E. Even in this case, the air sucked through the opening 72E, which is the intake port of the duct 64E, is circulated in the direction opposite to the rotation direction of the fan 61, so that the air blowing characteristic and the noise characteristic can be further improved. Further, since the duct 64E has two supply portions 67E diagonally, it is preferable that the sucked air easily flows in a spiral shape. Note that the blower 60E may include one or more supply units 67E.

  In the above-described embodiment, the electronic apparatus of the present invention is the mounting apparatus 11 including the mounting processing units (the substrate transport unit 20, the substrate support unit 25, the head moving unit 30, and the head unit 35) for mounting components on the substrate 16. As described above, a mounting-related processing unit that executes mounting-related processing related to processing for mounting a component on a board may be provided. The mounting-related processing unit may be a coating processing unit that applies a viscous fluid used when a component is disposed on the substrate to the substrate. That is, the electronic device may be a coating processing apparatus including a coating processing unit. For example, the application processing unit may be a unit that applies an adhesive for fixing a component to the substrate, or may be a unit that prints a solder paste on the substrate.

  Alternatively, the electronic device of the present invention is not particularly limited as long as the device has an object to be cooled. For example, the electronic device may have an electronic substrate, specifically, as an information device such as a personal computer. Alternatively, it may be a video device such as a television or a recorder. Moreover, although it was set as the electronic device provided with the air blower, it is not limited to this in particular, It is good also as an air blower.

  Below, the experimental result which produced and measured the air blower 60 shown in FIG. 3 is demonstrated as an experiment example. Experimental example 4 corresponds to an example of the present invention, and experimental examples 1 to 3 correspond to comparative examples.

(Fabrication device production and evaluation method)
As the mounting apparatus, a casing having a cavity having the size of an actual mounting apparatus was prepared, and this was regarded as an apparatus. In the blower, the fan and the duct are arranged so that the air inlet and the rotation axis of the fan 61 are vertical so that the flow of air flowing in from the air inlet changes vertically. In the blower, half of the intake port 71 is shielded by a shielding plate, and this is used as a restriction wall portion. The blower was configured to blow air to the exhaust port when the fan blade was rotated counterclockwise as viewed from the intake port side, and provided with a discharge port on the side of the housing.

(Experimental Examples 1-4)
A configuration in which air is blown to the housing only by a fan without providing a duct was defined as Experimental Example 1. Further, a configuration in which a fan and a duct were provided without providing a shielding plate was defined as Experimental Example 2. Further, a configuration in which the shielding plate is disposed on the left side of the intake port and the opening is on the right side is referred to as Experimental Example 3. In this case, the rotation direction of the fan is the same as the circulation rotation direction of the sucked air. Further, a configuration in which the shielding plate is disposed on the right side of the air inlet and the opening is on the left side is defined as Experimental Example 4. In this case, the direction of rotation of the fan is opposite to the direction of rotation of the intake air.

(Evaluation method)
The blower was evaluated as follows. Five wind speed sensors were provided at the outlet provided on the side of the housing, and the measurement results were averaged to evaluate the air volume of the blower. In addition, a noise sensor was disposed on the back side of the duct to evaluate the noise of the blower. The fans of Experimental Examples 1 to 4 were rotated at the same rotational speed, and the air volume and noise level were measured.

(Results and discussion)
FIG. 8 is an explanatory diagram of measurement results of average flow velocity (m / s), average flow rate (m ³ / min), and noise level (dB (A)) in Experimental Examples 1 to 4. As shown in FIG. 8, the experimental example 4 in which the rotation direction of the fan and the flow direction of the sucked air are reversed has better average flow velocity, average flow rate and noise level than the experimental example 3. I understood. In addition, it was found that the noise level was better in Experimental Example 4 than in Experimental Example 2. In Experimental Example 4, it was found that it can be reduced by about 4 dB as compared with Experimental Examples 2 and 3. Since 4 dB is about 2.5 times in terms of energy, it was found that Experimental Example 4 has a large noise improvement effect.

  The present invention can be used for electronic devices that require cooling by blowing.

DESCRIPTION OF SYMBOLS 10 Component mounting system, 11 Mounting apparatus, 12 LAN, 15 Housing | casing, 16 Board | substrate, 20 Board | substrate conveyance unit, 25 Board | substrate support unit, 30 Head movement unit, 35 Head unit, 40 Head, 50 Supply unit, 51 Reel, 52 Feeder 60, 60B-60E Blower, 61, 61B Fan, 61a Outer frame, 62 Rotating shaft, 63, 63B Fan blade, 64, 64B-64E Duct, 65 Air intake wall, 65D, 65E Wall, 66, 66C Cover Wall part, 67, 67B, 67C Restriction wall part, 67D Restriction member, 67E Supply part, 69 Fan mounting part, 71, 71B Inlet, 72, 72B to 72E Open part, 73 Exhaust, 74 Installation space, 80 Management Computer.

Claims (13)

  A fan that blows the gas sucked from the air inlet to the air outlet and a duct from the air inlet to the fan, and the gas sucked from the air inlet through the opening is circulated in the direction opposite to the rotation direction of the fan. An electronic apparatus comprising a blower device having a distribution restriction unit. The fan is arranged to circulate the gas in a direction different from the direction of the gas in the opening,
2. The electronic device according to claim 1, wherein the distribution restriction unit includes the duct in which the opening portion narrower than a region of the fan is formed on a side toward which the fan is rotated.   The electronic device according to claim 1, wherein the fan is disposed in a direction perpendicular to the opening.   The said distribution | circulation control part has the said duct in which the control member which narrows the said opening part with respect to the area | region of the said fan side by side was formed in the said opening part. Electronics. The fan is disposed in a direction perpendicular to the opening;
The flow restricting portion is configured such that when the opening is disposed below in a configuration in which the fan rotates counterclockwise as viewed from the intake port side and blows air, a left side region of the duct as viewed from the intake port side. The opening is formed and a restricting member is formed in the right region of the duct, or the flow restricting portion is configured such that the fan rotates in a clockwise direction when viewed from the inlet side and blows air. The opening according to any one of claims 1 to 4, wherein when the opening is disposed below, the opening is formed in a right region of the duct as viewed from the inlet side, and a restriction member is formed in a left region of the duct. The electronic device of Claim 1.   6. The electronic device according to claim 4, wherein the distribution regulating unit has an arrangement space in which a member included in the electronic device can be arranged formed outside the duct by the regulating member. The fan is arranged to flow the gas in the same direction as the flow direction of the gas in the opening,
2. The electronic device according to claim 1, wherein the flow restriction unit is formed with a restriction member that blocks a part of the duct and flows the sucked gas in a direction opposite to a rotation direction of the fan.   The electronic device according to claim 7, wherein the distribution restriction unit includes two or more restriction members formed in the duct.   9. The electronic device according to claim 7, wherein the distribution regulating unit is formed with the regulating member in which a tip of the regulating member is inclined toward the fan side.   The electronic device according to claim 4, wherein the regulating member is an electronic substrate as a cooling target.   The electronic device according to any one of claims 1 to 10, wherein the distribution restriction unit includes the duct having two or more openings.   The flow restricting portion includes one or more supply portions that are disposed in the duct and cause the sucked gas to flow in a direction opposite to the rotation direction of the fan by forcibly supplying the gas into the duct. Item 12. The electronic device according to any one of Items 1 to 11.   A fan that blows the gas sucked from the air inlet to the air outlet and a duct from the air inlet to the fan, and the gas sucked from the air inlet through the opening is circulated in the direction opposite to the rotation direction of the fan. A blower device comprising a distribution regulation unit.

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