JPWO2012070145A1 - Elevator cooling system - Google Patents

Abstract

There is provided an elevator cooling apparatus that does not require complicated maintenance work and can obtain a necessary cooling effect. For this reason, in an elevator cooling device for cooling equipment provided in an elevator car, an air intake portion that introduces an air flow caused by traveling wind when the car is raised and lowered into the equipment, and an interior of the equipment An exhaust part that discharges air to the outside of the device and a foreign matter that is provided in the intake part and that is contained in the airflow is separated using at least one of centrifugal force and gravity acting on the foreign matter Foreign matter separating means, and the intake section introduces the air flow in which the foreign matter is separated by the foreign matter separating means and the foreign matter content is reduced from before the separation into the apparatus. To do.

Description

  The present invention relates to an elevator cooling apparatus.

  Conventionally, as an elevator cooling device for cooling equipment such as a control board installed in an elevator car, for example, there is one using a heat radiation fin, a cooling fan, a duct for taking in traveling air during traveling of a car, or the like.

  A typical example of such a conventional elevator cooling apparatus is shown in FIG. In FIG. 12, reference numeral 1 denotes a built-in box installed on, for example, an upper part of an elevator car (not shown). In this built-in box 1, a cooling object 2 which is a heat generating device such as a circuit board is accommodated. An intake port 3 is provided on one side of the built-in box 1. An intake filter 21 for removing foreign matters such as dust during intake is attached to the intake port 3. An exhaust fan 22 that also serves as an exhaust port is attached to the other side surface of the built-in box 1. The exhaust fan 22 is generally driven to rotate by an electric motor. When the exhaust fan 22 rotates, the air whose temperature has been raised by the heat generated from the cooling object 2 is exhausted from the built-in box 1. Then, since the atmospheric pressure in the built-in box 1 decreases, outside air is sucked into the built-in box 1 from the intake port 3. At this time, the foreign matter contained in the intake air is captured by the intake filter 21.

  Further, as another example of a conventional elevator cooling device, one disclosed in Patent Document 1 is known. In this Patent Document 1, a fan device that cools a circuit board mounted on a car is provided in the car, and this fan device is mechanically rotated by a roller guide that guides the raising and lowering of the rolling cage along the guide rail. An elevator heat dissipating device that is rotated by being transmitted to is shown. Further, this Patent Document 1 includes a plurality of intake / exhaust ports that take in the traveling wind when the car is raised and lowered, and discharge the captured traveling wind, and a ventilation duct that guides the traveling wind to a circuit board mounted on the car. The one provided in is also shown.

Japanese Patent Application Laid-Open No. 2001-341962

  However, in such a conventional elevator cooling apparatus using a radiation fin, the heat to be cooled is dissipated by the diffusion of heat by heat conduction and the natural convection of the air around the radiation fin. Therefore, a cooling fin having a volume corresponding to the heat generation amount of the cooling target is required, and when the heat generation amount of the cooling target is increased, the size of the cooling fin is increased and a large installation space is required. .

  Further, in a conventional elevator cooling apparatus using a cooling fan, air is forcibly taken in from the outside of the car. The air outside the car may contain foreign matters such as dust. For this reason, foreign matter such as dust contained in the air taken in from the outside of the car is blown onto the object to be cooled by the cooling fan. Accordingly, there is a problem that the cooling capacity is reduced due to foreign matter adhering to and accumulating on the fan. In addition, when foreign matter adheres to or accumulates on a circuit board to be cooled, there is a problem that the electrical circuit tracks due to dust, moisture, carbides, etc., leading to equipment failure.

  In order to prevent such troubles due to foreign matters such as dust contained in the air taken in from the outside of the car, for example, a filter for removing foreign matters in the air may be arranged at the intake port as shown in FIG. . However, in this case, when a large amount of foreign matter adheres to the filter, the filter is clogged, and there is a problem that the cooling capacity is lowered due to a decrease in the air inflow amount. In order to prevent the clogging of the filter, maintenance such as periodic replacement of the filter and cleaning is necessary, and there is a problem that a complicated work is required.

  Moreover, in the conventional elevator cooling device disclosed in Patent Document 1, the rotation of the roller guide is mechanically transmitted to the cooling fan via the rotation transmission mechanism, and the cooling fan is rotated. For this reason, there are many movable parts in the cooling fan and the rotation transmission mechanism, and wear occurs in these movable parts. Therefore, there is a problem that maintenance such as replacement of worn parts is necessary, and a complicated work is required. Patent Document 1 also describes that a car is provided with a ventilation duct having a plurality of air intakes and exhausts for taking in the traveling wind when the car is raised and lowered. However, such a ventilation duct requires many members, and there is a problem that the weight of the car increases and a problem that a lot of cost is required for manufacturing.

  The present invention has been made to solve such a problem, and it is an object of the present invention to provide an elevator cooling apparatus that does not require complicated maintenance work and can obtain a necessary cooling effect.

  An elevator cooling device according to the present invention is an elevator cooling device that cools equipment provided in an elevator car, and an air intake section that introduces an air flow caused by traveling wind when the car is raised and lowered into the equipment. And an exhaust part that discharges air inside the device to the outside of the device, and a foreign substance that is provided in the air intake part and that is included in the air flow is at least one of centrifugal force and gravity acting on the foreign substance A foreign matter separating means for separating one of the two, and the air intake portion removes the air flow in which the foreign matter content is reduced by the foreign matter separating means and the foreign matter content is reduced from before the separation. It is configured to be introduced inside.

  In the elevator cooling apparatus according to the present invention, a complicated maintenance work is unnecessary, and a necessary cooling effect can be obtained.

It is a perspective view of the built-in box which accommodated the cooling target object to which the elevator cooling device which concerns on Embodiment 1 of this invention is applied. It is a front view explaining the flow of the air during the cage | basket | car travel of the built-in box to which the elevator cooling device which concerns on Embodiment 1 of this invention is applied. It is a front view explaining the flow of the air in the stop of the cage | basket | car of the built-in box to which the elevator cooling device which concerns on Embodiment 1 of this invention is applied. It is a figure explaining the structural conditions at the time of mounting the elevator cooling device which concerns on Embodiment 1 of this invention in the actually operating elevator, and measuring the temperature change of a cooling target object. It is a graph which shows the measurement result in the structural conditions of FIG. 4 of the cooling device of the elevator which concerns on Embodiment 1 of this invention. It is a perspective view of the built-in box to which the elevator cooling device concerning Embodiment 2 of this invention is applied. It is a front view explaining the flow of the air during the cage | basket | car traveling of the built-in box to which the elevator cooling device which concerns on Embodiment 2 of this invention is applied. It is a front view explaining the flow of the air during the car stop of the built-in box to which the elevator cooling device according to Embodiment 2 of the present invention is applied. It is a perspective view of the built-in box to which the elevator cooling device which concerns on Embodiment 3 of this invention is applied. It is a front view explaining the flow of the air during the cage | basket | car traveling of the built-in box to which the elevator cooling device which concerns on Embodiment 3 of this invention is applied. It is a front view explaining the flow of the air during the car stop of the built-in box to which the elevator cooling device according to Embodiment 3 of the present invention is applied. It is a perspective view of a built-in box to which a conventional elevator cooling device is applied.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
1 to 5 relate to Embodiment 1 of the present invention. FIG. 1 is a perspective view of a built-in box to which the elevator cooling device according to this embodiment is applied.
In FIG. 1, reference numeral 1 denotes a built-in box installed on, for example, an upper part of an elevator car (not shown). This built-in box 1 is a substantially rectangular parallelepiped box. And in this built-in box 1, the cooling target object 2 which is heat generating apparatuses, such as a circuit board, is accommodated. An intake port 3 is provided at one end of the lower surface of the built-in box 1. An intake hood 4 is attached to the intake port 3. The intake hood 4 is formed in a substantially semicircular shape when viewed from the front. The intake hood 4 has an intake air guide plate 4a bent in an arc shape.

  The intake hood 4 is attached to the intake port 3 portion of the built-in box 1 such that the substantially semicircular arc portion is downward and the diameter portion is upward. At this time, one radial side of the substantially semicircular diameter portion of the intake hood 4 is applied to the intake port 3, and the other radial side is located outside the side of the built-in box 1. Placed in. And the other radial side arrange | positioned so that it may become the position protruded outward from the side surface of this built-in box 1 in the intake hood 4 is opened upwards. This opening forms the inflow surface 5.

  A foreign matter separating plate 6 is provided at the end of the intake hood 4 on the intake port 3 side. Here, a straight plate-like foreign material separating plate 6 is projected inward from the arc side of the intake hood 4 so that an angle 7 formed by the intake air guide plate and the foreign material separating plate becomes an acute angle. Then, in the space formed by being sandwiched between the foreign material separating plate 6 and the intake air guide plate 4a, the air flow that is an opening is formed in the portion of the air intake air guide plate 4a that is closest to the foreign material separating plate 6. A direction discharge port 8a is provided. Further, half of the intake hood 4 on both sides (the front side and the rear side of the built-in box 1) on the intake port 3 side is an opening, and an airflow traveling side direction discharge port 8b is formed.

  An internal air guide plate 9 is attached to the side surface in the built-in box 1 so as to be positioned above the intake port 3. Here, the internal air guide plate 9 is configured such that the cross section has an arc shape of a quarter of the entire circle.

  Exhaust ports 10 that are openings are respectively provided at the upper ends of the front surface and the rear surface of the built-in box 1. And the exhaust hood 11 is attached to the outer side of these exhaust ports 10, respectively. These exhaust hoods 11 are composed of two surfaces, an upper surface covering the upper side of each exhaust port 10 and a surface parallel to the opening surface of each exhaust port 10. The left and right sides and the lower side of each exhaust port 10 are open, and an exhaust surface 12 is formed. These exhaust hoods 11 have a rectifying action that prevents the traveling wind 13 from above from flowing directly from the exhaust port 10 and losing the directionality of the airflow (unidirectional airflow). The exhaust hood 11 also has a function of making it difficult for foreign matter to be taken into the built-in box 1 from the exhaust port 10.

  FIG. 2 is a diagram for explaining the flow of air during the traveling of the cage of the built-in box to which the elevator cooling apparatus configured as described above is applied. When the car rises, the built-in box 1 installed in the car also rises with the car. Accordingly, the traveling wind 13 flows from the upper side to the lower side relative to the built-in box 1. When the traveling wind 13 hits the inflow surface 5 of the intake hood 4, the air flow is guided along the arc shape of the intake air guide plate 4 a of the intake hood 4 due to the difference in atmospheric pressure. At that time, the trajectory of the foreign matter such as dust and dust, which is contained in the airflow and has a larger mass than the air, is warped toward the outside of the arc-shaped trajectory due to its own weight and centrifugal force (centrifugal separation action). That is, the foreign matter in the inflowing air flow 14 swirls along the inner wall of the intake air guide plate 4a and is guided to a space formed by being sandwiched between the foreign material separator plate 6 and the intake air guide plate 4a. It is burned.

  In this way, air with a large amount of foreign matter led to the space formed between the foreign matter separation plate 6 and the intake air guide plate 4a is mainly discharged from the airflow traveling direction discharge port 8a (discharge port). Air flow in the direction of travel 15). Most of the airflow that has not been discharged from the airflow traveling direction discharge port 8a proceeds upward and enters the built-in box 1 from the air intake port 3 (internal airflow 16 in the built-in box). On the other hand, the remaining airflow that has not been guided to the airflow progression direction discharge port 8a and the air intake port 3 is discharged from the airflow progression side surface direction discharge port 8b (air flow 17 toward the discharge port side surface direction). At this time, the foreign matter staying at the bottom of the intake hood 4 and the intake air guide plate 4a due to gravity is exhausted while being discharged from the airflow traveling side direction discharge port 8b (foreign matter discharging action). The airflow that has entered the built-in box 1 from the air inlet 3 changes its traveling direction by the internal air guide plate 9 and is blown to the cooling object 2. Thus, the cooling object 2 can be efficiently cooled by the air flow introduced into the built-in box 1.

  Then, the air warmed by the cooling object 2 is discharged from the exhaust port 10 having a lower atmospheric pressure. The air discharged from the exhaust hood 11 merges with the traveling wind 13 outside from the exhaust hood 11 (outflowing air flow 18).

  In this way, first, the interior of the built-in box 1 by the intake hood 4 that takes in the wind that hits the wind from the upper side when the elevator car rises and the intake port 3 that takes in the wind into the built-in box 1. To be introduced. In this introduction process, the direction of the airflow is changed upward by the arc-shaped intake air guide plate 4a, and foreign substances in the airflow are separated using the principle of centrifugal separation. Then, the foreign substance is finally removed from the air introduced into the built-in box 1 by the foreign substance separation plate 6. The foreign matter removed by the foreign matter separation plate 6 is in a direction orthogonal to the main airflow direction and the airflow direction discharge port 8a in the main airflow direction due to part of the airflow entering from the inflow surface 5 of the intake hood 4. Is discharged from the airflow traveling side direction outlet 8b. That is, the arc-shaped intake air guide plate 4 a, the foreign matter separating plate 6, the airflow traveling direction discharge port 8 a and the airflow traveling side direction discharge port 8 b of the intake hood 4 constitute foreign matter separating means for separating foreign matter from the traveling wind 13. doing.

  Thus, the air from which the foreign matter has been removed in the process of introducing the traveling wind 13 is blown to the cooling object 2 by the internal air guide plate 9 in the built-in box 1. And the air which cooled and cooled the cooling target object 2 is discharged | emitted from the exhaust port 10 near the upper side of the built-in box 1 to the exterior of the built-in box 1. FIG. This series of forced air flows provides cooling.

  On the other hand, the flow of air during the car stop of the built-in box to which the elevator cooling apparatus configured as described above is applied is as shown in FIG. When the car stops and there is no traveling wind, exhaust heat is performed by natural convection generated by the heat generated by the cooling object 2 in the built-in box 1. Compared with the case where a forced air flow is formed by receiving the traveling wind, the air volume is reduced, but by introducing natural air from the lower intake port 3 by natural convection (air flow 19 flowing in when stopped), A flow of air exhausted from the upper exhaust port 10 (air flow 20 flowing out when stopped) can be secured, and heat can be prevented from staying. Since the traveling wind does not hit from the top while the car is stopped, the warm air discharged from the exhaust port 10 rises upward. Here, the exhaust hood 11 is configured so that the left and right sides of each exhaust port 10 are open. For this reason, warm air by natural convection in the absence of traveling wind rises immediately after exhausting, so that warm air is less likely to stay inside the built-in box 1.

  In order to obtain a desired exhaust heat effect using traveling wind or natural convection, it is necessary to design an air passage having a constant cross-sectional area in a series from the intake port 3 to the exhaust port 10. . For example, in FIG. 1, this air passage is a series of air passages on the exhaust surface 12 formed by the built-in box 1 and the exhaust hood 11 from the inflow surface 5 formed by the built-in box 1 and the intake hood 4. Point to. The necessary cross-sectional area can be derived by means such as thermal fluid analysis simulation or experiment based on the number and area of the intake ports 3 and exhaust ports 10 and the parameters such as the heat generation amount, shape and arrangement of the cooling object 2. .

  FIG. 4 is a diagram for explaining a configuration condition when the temperature change of the object to be cooled is measured by mounting the elevator cooling device of this embodiment on an actually operating elevator. In the elevator cooling apparatus used for this measurement, two intake portions and four exhaust portions are provided to enhance the cooling effect. Further, in order to compare the air passage cross-sectional area and the cooling effect, the measurement was performed simultaneously in the configuration of Condition B in which the air passage cross-sectional area was 1.5 times that of Condition A. Condition C is for comparison of the influence due to the difference in the structure of the intake section. Under this condition C, the foreign matter separating means according to the present invention is not provided in the intake portion, only the hood for preventing the backflow of traveling wind is provided in the exhaust portion, and the air passage cross-sectional area is the same as that in the condition A.

  FIG. 5 shows the measurement results for 24 hours under the configuration conditions of FIG. The measurement target was the surface temperature of the printed circuit board mounting component (electrolytic capacitor) inside the housing. There is no change in the energization state inside the housing, and the calorific value of the measurement target is constant from start to finish. Further, the state of the elevator is indicated by the acceleration sensor output. This acceleration sensor output is an output curve oscillating around 0.00 (V). The first 10 hours when the amplitude of the vibration is small is a stop time zone, and the latter 14 hours when the vibration is intense is a traveling time zone.

  In the graph of FIG. 5, the temperature amplitude of about 3 to 4 ° C. in the entire time zone is due to the fact that there are winds that are irregularly blown through the hoistway in addition to the traveling wind of the car. First, the conditions A and B will be compared. When compared with the average temperature of the measured values, the condition B was lower than the condition A by about 1 ° C. in the stop time zone, and the traveling time zone was lower by 2 ° C. or more. That is, it can be said that it was confirmed that the larger the air passage cross-sectional area, the higher the heat exhaust effect by the air flow and the higher the cooling effect by taking in the traveling wind. The average temperature difference over 24 hours is 1 ° C. or more.

  Next, the comparison between the condition A and the condition C is an intermediate result of the comparison between the condition A and the condition B, although illustration is omitted. That is, the condition C was lower than the condition A by about 0.5 ° C. in the stop time zone and about 1 ° C. in the travel time zone. The main reasons for this are that the condition A has a higher intake resistance due to the curved air passage shape of the intake section and the foreign matter separating plate than the condition C, and the condition A exhausts the airflow containing the foreign matter in the middle. Therefore, it is considered that this is due to the two points that the amount of air hitting the object to be cooled is reduced as compared with the condition C. Therefore, in order to obtain a cooling effect equal to or higher than that in the case where the foreign matter separating means is not used by using the intake portion provided with the foreign matter separating means according to this embodiment, the air flow path resistance and the amount of reduction in the air volume due to the midway exhaust are It can be seen that it is necessary to set the airway cross-sectional area in consideration.

Here, the straight plate-like foreign material separating plate 6 is provided such that an angle 7 formed by the intake air guide plate and the foreign material separating plate is an acute angle. In this regard, the foreign material separating plate 6 may be bent into, for example, an L shape or an arc shape, and the angle 7 formed by the intake air guide plate and the foreign material separating plate may be, for example, about a right angle.
Moreover, the case where the built-in box 1 was installed in the car upper part was demonstrated here. When installing the built-in box 1 in the lower part of the car, the direction of the intake hood 4 is changed in the direction of taking in the wind received when the car is lowered (downwardly opposite to that in the upper part), and the exhaust hood 11 is lowered. It can be considered that the traveling wind at the time is changed to a direction in which the running wind is not taken into the built-in box 1 from the exhaust port 10 (downwardly opposite to the time of installation of the upper part).

  The elevator cooling apparatus configured as described above is an elevator cooling apparatus that cools a built-in box (an object to be cooled) that is a device provided in the elevator car, and travels when the car is raised and lowered. An air intake unit that introduces an air flow caused by wind into the inside of the device, an exhaust unit that discharges air inside the device to the outside of the device, and a foreign object included in the air flow, Foreign matter separating means that separates using at least one of centrifugal force and gravity acting on the air, and the intake portion is air in which the foreign matter content is reduced by the foreign matter separated by the foreign matter separating means and before the separation. The flow is introduced into the equipment.

  The foreign matter separating means discharges the separated foreign matter together with a part of the air flow from the airflow traveling direction outlet and the airflow traveling side direction outlet to the outside of the device without passing through the inside of the device. is there.

  For this reason, at the time of forced air cooling using traveling wind, it is possible to cool the equipment with air with reduced foreign matter content without using a filter or the like that requires maintenance. At this time, foreign matter such as separated dust is discharged to the outside of the device by the wind pressure, so that a complicated overhaul accompanying the disassembly of the device is unnecessary or the work load can be reduced. Further, a power source for cooling and a power source having a wear part are unnecessary, and a cooling effect from natural air cooling to forced air cooling can be obtained, and energy saving and resource saving can be achieved. In addition, since the air guide path from intake to exhaust can be configured by adding members only to the inside and outside of the equipment, it is a component compared to the system that collects wind by installing ducts etc. outside the equipment Therefore, the cost required for manufacturing can be reduced and resource saving can be achieved.

Embodiment 2. FIG.
The second embodiment described here is provided with a plurality of foreign matter separating means in the configuration of the first embodiment described above. That is, in the second embodiment, a plurality of stages (here, three stages) of foreign matter separating means are provided in the air path from the running wind inflow surface to the intake port into the built-in box.

  6 to 8 relate to Embodiment 2 of the present invention. FIG. 6 shows a perspective view of a built-in box to which the elevator cooling device according to this embodiment is applied. As described above, the second embodiment is provided with a plurality of foreign matter separating means. That is, the intake hood 4 is provided with a plurality (three in this case) of sets of the intake air guide plate 4a, the foreign matter separation plate 6, the airflow traveling direction discharge port 8a, and the airflow traveling side direction discharge port 8b. These sets are connected to other sets to form a series of air paths. That is, the outflow side of the first set and the inflow side of the second set in which the inflow surface 5 is formed are connected, the outflow side of the second set and the inflow side of the third set are connected, The outflow side of the third set is connected to an intake port 3 provided on the lower surface of the built-in box 1.

Since the intake hood 4 is slightly longer in the horizontal direction in this way, the intake port 3 is not located near the side surface of the lower surface of the built-in box 1 but is located near the center of the lower surface of the built-in box 1. For this reason, the internal air guide plate 9 provided in the first embodiment is not provided in the second embodiment.
Other configurations are the same as those of the first embodiment, and detailed description thereof is omitted.

  FIG. 7 is a diagram for explaining the air flow during the traveling of the built-in box car to which the elevator cooling apparatus configured as described above is applied. When the car rises, the traveling wind 13 flows from the upper side to the lower side relative to the built-in box 1. The traveling wind 13 is taken in from the inflow surface 5 of the intake hood 4 and the airflow is guided along the arcuate shape of the first intake air guide plate 4a. At that time, as in the first embodiment, the foreign substance in the airflow is separated by the centrifugal separation action and the foreign substance separation plate 6 and is discharged from the airflow traveling direction discharge port 8a and the airflow traveling side direction discharge port 8b.

The airflow that has not been discharged from the airflow traveling direction discharge port 8a and the airflow traveling side direction discharge port 8b once proceeds upward, and flows into the next second group (foreign matter separating means). Then, in the same way as the first, foreign substances in the air that could not be removed by the first foreign substance separating means are removed. Similarly, in the third set (foreign matter separating means), foreign matters in the air that could not be removed by the previous two sets (foreign matter separating means) are removed. In this way, the airflow that has passed through the foreign matter removing process in the three-stage foreign matter separating means is introduced from the air inlet 3 into the built-in box 1.
The subsequent cooling process of the cooling object 2 is the same as in the first embodiment, and a detailed description thereof is omitted.

  FIG. 8 shows the air flow when the cage of the built-in box to which the elevator cooling device according to this embodiment is applied is stopped. The air flow when the car is stopped is substantially the same as in the first embodiment. However, since there are as many airflow traveling side direction outlets 8b (and airflow traveling direction outlets 8a) as the number of foreign matter separating means, in addition to the inflow surface 5 of the intake hood 4, these plural airflow traveling side direction outlets 8b, etc. Is different from the first embodiment in that outside air is introduced.

  It should be noted that the number of foreign matter separating means provided in the intake hood 4 serving as the intake portion may be any number of stages according to the purpose. When a plurality of foreign substance separating means are provided, the radial dimension of the arc formed by the intake air guide plate 4a is changed according to the type of foreign substance (dust diameter, weight, etc.) to be separated for each stage. It may be. Further, as shown in FIG. 7, a rectifying member is provided substantially vertically downward from the center of the arc formed by each intake air guide plate 4a, so that the trajectory of the airflow in the intake hood 4 is reliably crank-shaped. You may do it.

  The elevator cooling apparatus configured as described above is provided by connecting a plurality of foreign matter separating means in the configuration of the first embodiment. For this reason, in addition to having the same effects as those of the first embodiment, the foreign matter separation ability can be improved.

Embodiment 3 FIG.
In the first and second embodiments described above, foreign matters are separated from the air using centrifugal force and gravity. On the other hand, Embodiment 3 described here does not use the action of centrifugal force in the intake section, but separates foreign matter from the air mainly using gravity.

  9 to 11 relate to Embodiment 3 of the present invention. FIG. 9 is a perspective view of a built-in box to which the elevator cooling device according to this embodiment is applied. In the third embodiment, an intake hood 4 is provided below the lower surface of the built-in box 1 in which the cooling object 2 is stored. The intake hood 4 has an intake air guide plate 4 a disposed substantially parallel to the lower surface of the built-in box 1. That is, the intake air guide plate 4a is disposed substantially horizontally. The air passage in the intake section formed by the intake hood 4 (intake section air guide plate 4a) has an air guide path structure that blows linearly in a substantially horizontal direction. The intake air guide plate 4 a protrudes outward from both side surfaces of the built-in box 1. When the running wind 13 from above hits the projecting portion of the intake air guide plate 4a, the running wind 13 is introduced into the wind guide path below the built-in box 1 formed by the intake hood 4 due to the pressure difference. The

An intake port 3 is provided on the lower surface of the built-in box 1. In the air flow that blows through the intake hood 4 in a substantially horizontal direction, the foreign matter in the air flow blows down linearly while descending downward due to gravity acting on its own weight. On the other hand, a part of the air with less foreign matter in the vicinity of the lower surface of the built-in box 1, that is, above, flows into the air built-in box 1 having a lower atmospheric pressure from the intake port 3. In this way, air containing a large amount of foreign matter is discharged by the action of gravity acting on the foreign matter, and air containing a relatively small amount of foreign matter is introduced from the air inlet 3 into the built-in box 1.
Other configurations are substantially the same as those of the first embodiment except that the internal air guide plate 9 is not provided, and detailed description thereof is omitted.

FIG. 10 illustrates the flow of air during the traveling of the built-in box car to which the elevator cooling apparatus configured as described above is applied. When the car rises, the traveling wind 13 flows from the upper side to the lower side relative to the built-in box 1. The traveling wind 13 hits the protruding portion of the intake air guide plate 4 a and is introduced into the air guide path below the built-in box 1 formed by the intake hood 4. Then, by utilizing the action of gravity acting on the foreign matter as described above, the lower air containing a large amount of foreign matter is discharged, and the upper air containing a relatively small amount of foreign matter is introduced from the air inlet 3 into the built-in box 1. Is done.
The subsequent cooling process of the cooling object 2 is the same as in the first embodiment, and a detailed description thereof is omitted.

  FIG. 11 shows the air flow when the cage of the built-in box to which the elevator cooling device according to this embodiment is applied is stopped. The air flow when the car is stopped is substantially the same as in the first embodiment. Due to natural convection, outside air is taken in from the intake hood 4 and the intake port 3 below the built-in box 1, and warm air is discharged from the exhaust port 10 above the built-in box 1.

  In this embodiment, a foreign matter separating net may be provided at the air inlet 3.

  In the elevator cooling apparatus configured as described above, instead of the configuration of the foreign matter separating means in the configuration of the first embodiment, the foreign matter separating means is configured to form a straight airflow path in the horizontal direction. And using the gravity acting on the foreign matter, the foreign matter contained in the air flow is separated by being guided vertically downward with respect to the air flow path formed by the air guide plate. For this reason, it is possible to obtain an elevator cooling apparatus that can save space with a simple configuration while following the advantages of the configuration of the first embodiment.

  In the first and second embodiments described above, if the series of ventilation path cross-sectional areas are the same, the intake section (in the case of a plurality of stages is more than in the case where the number of foreign substance separation stages is one. The air resistance at the inflow portion is increased. For this reason, it is necessary to increase the cross-sectional area in order to reduce the air resistance, resulting in an increase in configuration space and the amount of members used. Further, in the case of the intake portion where the airflow is blown linearly according to the third embodiment, foreign matter easily enters and leaves the built-in box 1 depending on the air flow. However, the cooling device can be configured with a small space, a simple shape, and a small amount of member usage. In view of such circumstances, in the configurations of the first to third embodiments described above, an appropriate configuration should be selected according to the purpose such as whether to prioritize the foreign matter separation function or priority to space saving. Can do. That is, by changing the configuration of the foreign matter separating means in the intake section, the ability to separate foreign matter can be changed as required.

  The present invention can be used in an elevator cooling device that cools equipment provided in an elevator car.

DESCRIPTION OF SYMBOLS 1 Built-in box 2 Cooling target object 3 Intake port 4 Intake hood 4a Intake part baffle plate 5 Inflow surface 6 Foreign material separation plate 7 Angle which an intake part baffle plate and a foreign material separation plate make 8a Air flow direction discharge port 8b Air flow side surface Direction exhaust port 9 Internal air guide plate 10 Exhaust port 11 Exhaust hood 12 Exhaust surface 13 Traveling air 14 Flow of inflowing air 15 Flow of air in the direction of travel of the exhaust port 16 Inlet air in the built-in box 17 In the direction toward the side of the exhaust port Flow of air 18 Flow of air flowing out 19 Flow of air flowing in when stopped 20 Flow of air flowing out when stopped 21 Intake filter 22 Exhaust fan

Claims (8)

In an elevator cooling device that cools equipment installed in an elevator car,
An air intake portion that introduces an air flow caused by traveling wind when the car is raised and lowered into the interior of the device;
An exhaust for exhausting the air inside the device to the outside of the device;
Foreign matter separating means provided in the intake portion and separating foreign matter contained in the air flow using at least one of centrifugal force and gravity acting on the foreign matter,
The elevator cooling apparatus according to claim 1, wherein the air intake unit introduces the air flow, in which the foreign matter is separated by the foreign matter separating unit and the foreign matter content is reduced from before the separation, into the apparatus.   2. The elevator according to claim 1, wherein the foreign matter separating unit discharges the separated foreign matter together with a part of the air flow to the outside of the device without passing through the inside of the device. Cooling system.   The foreign matter separating means includes an air guide plate that forms a path of the air flow in a circular arc curved vertically downward, and the foreign matter contained in the air flow using centrifugal force and gravity acting on the foreign matter. The elevator cooling according to any one of claims 1 and 2, wherein the air is separated by being guided vertically downward and closer to the outer periphery with respect to the air flow path formed by the air guide plate. apparatus.   4. The elevator cooling apparatus according to claim 3, wherein the intake section includes a plurality of the foreign matter separating means.   The foreign matter separating means includes a wind guide plate that linearly forms a path of the air flow in a horizontal direction, and uses the gravity acting on the foreign matter to remove the foreign matter contained in the air flow. The elevator cooling device according to claim 1, wherein the elevator cooling device is separated by being guided vertically downward with respect to the air flow path formed by a plate.   The apparatus according to claim 1, further comprising an air guide unit that is provided inside the device and guides the air flow introduced into the device by the intake unit to a cooling target inside the device. The elevator cooling device according to any one of claims 1 to 4.   The exhaust unit includes an exhaust hood that prevents the traveling wind and foreign matter from entering the inside of the device from the exhaust unit and ensures unidirectional airflow from the intake unit to the exhaust unit. The elevator cooling device according to any one of claims 1 to 5, characterized in that:   The elevator cooling device according to any one of claims 1 to 6, wherein the intake section is disposed below the exhaust section.

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