JP6370406B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner.

  As a conventional air conditioner, there has been known one that is provided with two air passages oriented in the same direction to reduce the size (for example, Patent Documents 1 and 2).

Japanese Utility Model Publication No. 61-1292 JP 2012-17941 A

  However, in the air conditioners described in Patent Documents 1 and 2, the fans and motors arranged in each air passage are arranged in parallel in the height direction, and the fans are arranged in the same direction. Has been. Moreover, in an air conditioner as described in Patent Documents 1 and 2, one fan is positioned behind the other fan in the air flow direction. Therefore, in an air conditioner as described in Patent Documents 1 and 2, the air flow on the wake side of the two fans overlaps, so the air flow suddenly shrinks or the air collides with the wall surface. There is a problem that pressure loss due to the air passage increases.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air conditioner that can reduce the pressure loss of the air passage and can be downsized.

The air conditioner of the present invention includes a housing, a heat exchanger that is disposed inside the housing, and performs heat exchange between the air sucked into the housing and the interior of the housing. A plurality of ducts that are arranged in parallel and blow out the air heat-exchanged by the heat exchanger into the room, and a rotation shaft and a main body portion that fixes one end of the rotation shaft, respectively, and the rotation shaft is connected to the duct. A plurality of ducts are arranged in the plurality of ducts so as to be alternately opposite to each other in the vertical direction with respect to the longitudinal direction , and the main body portion is arranged between the plurality of ducts in parallel with the longitudinal direction of the ducts . A plurality of motors, a plurality of centrifugal fans respectively disposed inside the plurality of ducts and driven by the plurality of motors; and the plurality of motors extending in parallel between the plurality of ducts. The main body of the rotating shaft And a partition member having one or more connecting portions for connecting a plurality of motor supporting portion for fixing respectively on the side, and a plurality of motor supporting portions adjacent.

  According to the present invention, since the air passages communicating with the plurality of ducts do not interfere with each other and do not disturb the air flow, the pressure loss in the air passage can be reduced. Moreover, according to this invention, since the main-body part of a motor is arrange | positioned between several ducts, an air conditioner can be reduced in size.

1 is a schematic cross-sectional view showing an example of an air conditioner 1 according to Embodiment 1 of the present invention. It is a schematic sectional drawing which shows an example of the conventional air conditioner. It is a schematic sectional drawing which shows an example of the air conditioner 1 which concerns on Embodiment 2 of this invention.

Embodiment 1 FIG.
An air conditioner 1 according to Embodiment 1 of the present invention will be described. FIG. 1 is a schematic cross-sectional view illustrating an example of the air conditioner 1 according to the first embodiment. In the following drawings including FIG. 1, the dimensional relationship and shape of each component may be different from the actual one. Moreover, in the following drawings, the same code | symbol is attached | subjected to the same or similar member or part, or the code | symbol is abbreviate | omitted.

  The air conditioner 1 according to Embodiment 1 is of a vertical type as shown in FIG. 1, and sucks indoor air from below the air conditioner 1 and blows out heat-exchanged air from above. It is. The air conditioner 1 of FIG. 1 includes a housing 2, a suction grill 3, a heat exchanger 4, a first duct 51, a second duct 52, a first motor 61, and a second motor. 62, a first centrifugal fan 71, a second centrifugal fan 72, and a partition member 8.

  The housing 2 is a hollow box, and may be a box made of a galvanized steel sheet, for example. The suction grill 3 is disposed on at least one surface of the housing 2 in order to suck indoor air into the housing 2 and has, for example, a plurality of rectangular intake ports 31. The suction grill 3 may be formed integrally with the housing 2 or may be detachable from the housing 2. Further, the suction grill 3 may be provided with an air filter (not shown) for removing dust.

  The heat exchanger 4 is disposed inside the housing 2 and adjusts humidity or temperature by exchanging heat with the air sucked from the suction grill 3. For example, in the heat exchanger 4, heat exchange is performed between water or refrigerant flowing in the heat exchanger 4 and air.

  The first duct 51 and the second duct 52 are pipes that are arranged inside the housing 2 and blow out the air heat-exchanged by the heat exchanger 4 into the room. The cross-sectional shapes of the first duct 51 and the second duct 52 may be, for example, rectangular, circular, or elliptical. One end of each of the first duct 51 and the second duct 52 is fixed to the inner surface of the housing 2, and an exhaust port is provided on the fixing surface of the first duct 51 and the second duct 52 in the housing 2. In this way, the inside of the housing 2 is communicated with the outside. Further, the first duct 51 and the second duct 52 are arranged at a certain distance from the inner surface of the housing 2 parallel to the first duct 51 and the second duct 52. In the first embodiment, the first duct 51 and the second duct 52 are fixed to the upper part of the housing 2 and are arranged in parallel in the height direction. The first duct 51 has a fixed portion provided with a first outlet 51 a, and the second duct 52 has a fixed portion provided with a second outlet 52 a. In addition, the 1st duct 51 and the 2nd duct 52 can be made into the pipe | tube made from a galvanized steel plate, for example.

  In the first motor 61, the rotation shaft 61 b is perpendicular to the longitudinal direction of the first duct 51, and the tip portion of the rotation shaft 61 b is disposed inside the first duct 51. The end portion of the rotating shaft 61 b is fixed to the main body 61 a of the first motor 61. In the second motor 62, the rotation shaft 62 b is perpendicular to the longitudinal direction of the second duct 52, and the tip portion of the rotation shaft 62 b is disposed inside the second duct 52. The end portion of the rotating shaft 62 b is fixed to the main body 62 a of the second motor 62. That is, the direction of the rotating shaft 62b of the second motor 62 is arranged to be opposite to the direction of the rotating shaft 61b of the first motor 61 alternately. The main body portion 61 a of the first motor 61 and the main body portion 62 a of the second motor 62 are arranged between the first duct 51 and the second duct 52 and the longitudinal lengths of the first duct 51 and the second duct 52. Arranged parallel to the direction. In the first embodiment, the main body 61a of the first motor 61 is disposed above the main body 62a of the second motor 62. However, the main body 62a of the second motor 62 is One motor 61 may be disposed above the main body 61a. Further, the first motor 61 and the second motor 62 may be the same, for example, an induction motor or a DC brushless motor.

  The first centrifugal fan 71 and the second centrifugal fan 72 are blowers that push out the air sucked from the rotation axis direction in the centrifugal direction. The first centrifugal fan 71 is disposed inside the first duct 51 and is driven by the first motor 61. The rotation shaft of the first centrifugal fan 71 is fixed to the tip portion of the rotation shaft 61 b of the first motor 61. The second centrifugal fan 72 is disposed inside the second duct 52 and is driven by the second motor 62. The rotation shaft of the second centrifugal fan 72 is fixed to the tip portion of the rotation shaft 62 b of the second motor 62. That is, the first centrifugal fan 71 is disposed above the second centrifugal fan 72, and the first centrifugal fan 71 and the second centrifugal fan 72 are spaced apart from each other so as not to overlap each other in the rotation axis direction. Are arranged. The first centrifugal fan 71 and the second centrifugal fan 72 are attached in directions opposite to each other, and the rotation axis of the first centrifugal fan 71 and the rotation axis of the second centrifugal fan 72 are mutually opposite. They are arranged in parallel.

  One side surface or both side surfaces of the first centrifugal fan 71 on the air suction side are fixed to the inner side surface of the first duct 51. The first duct 51 is further provided with a suction port (not shown) at a position facing the air suction port of the first centrifugal fan 71. The second centrifugal fan 72 has one side surface or both side surfaces on the air suction side fixed to the inner surface of the second duct 52. The second duct 52 is further provided with a suction port (not shown) at a position facing the air suction port of the second centrifugal fan 72.

  The first centrifugal fan 71 and the second centrifugal fan 72 may be sirocco fans or turbo fans. The fan diameters of the first centrifugal fan 71 and the second centrifugal fan 72 may be the same.

  The partition member 8 is disposed between the first duct 51 and the second duct 52. The partition member 8 extends in parallel between the first duct 51 and the second duct 52 and fixes the main body 61a of the first motor 61 on the opposite side of the rotating shaft 61b. Part 81. Similarly, the main body portion 62 a of the second motor 62 is also connected to a separate motor support portion 81 extending in parallel between the first duct 51 and the second duct 52, and the rotation shaft 62 b of the second motor 62. It is fixed on the opposite side. The partition member 8 further has a flat plate-like connecting portion 82 that connects a plurality of adjacent motor support portions 81. The partition member 8 may be a single plate-like member having steps alternately, or the motor support portion 81 and the connecting portion 82 may be separate plate-like members and connected by brazing or the like. The partition member 8 is fixed inside the housing 2 by brazing at least one side. The partition member 8 may be made of, for example, a galvanized steel plate.

  In the air conditioner 1 according to the first embodiment, the first duct 51 is disposed at a certain distance from the inner surface of the housing 2 parallel to the first duct 51, thereby A part of the space between the duct 51 and the inner surface of the housing 2 serves as a first housing-side air passage 91 for sucking air into the first duct 51. In addition, the second duct 52 is disposed at a certain distance from the inner surface of the housing 2 parallel to the second duct 52, so that the second duct 52 and the inner surface of the housing 2 are separated from each other. A part of the space becomes a second housing side air passage 92 for sucking air into the second duct 52.

  Furthermore, in the air conditioner 1 according to Embodiment 1, by providing the partition member 8, the space having the first duct 51 and the space having the second duct 52 are partitioned and interfere with each other. It has become an independent air passage. Thereby, in the air conditioner 1 according to the first embodiment, the space between the first duct 51 and the main body 61a of the first motor 61 is for sucking air into the first duct 51. A first motor side air passage 93 is formed. A space between the second duct 52 and the main body 62 a of the second motor 62 serves as a second motor-side air passage 94 for sucking air into the second duct 52.

  Next, the operation of the air conditioner 1 according to Embodiment 1 will be described. In FIG. 1, the air flow in the first duct 51 and the second duct 52 is indicated by white arrows.

  As the first centrifugal fan 71 and the second centrifugal fan 72 rotate, indoor air is sucked into the housing 2 through the suction grill 3. The sucked air is heat-exchanged by the heat exchanger 4 and is divided into the direction of the first duct 51 and the direction of the second duct 52 by the partition member 8. The air diverted in the direction of the first duct 51 flows into the first housing side air passage 91 and the first motor side air passage 93, and enters the inside of the first duct 51 by the first centrifugal fan 71. The air is sucked through the suction port (not shown) of the first duct 51. The air sucked into the first duct 51 is pushed out in the centrifugal direction by the first centrifugal fan 71 and blown out into the room from the first outlet 51a. Further, the air diverted in the direction of the second duct 52 flows into the second housing side air passage 92 and the second motor side air passage 94, and the second centrifugal fan 72 causes the air in the second duct 52 to flow. The air is sucked into through the suction port (not shown) of the second duct 52. The air sucked into the second duct 52 is pushed out in the centrifugal direction by the second centrifugal fan 72 and blown out into the room from the second outlet 52a.

  As described above, in the air conditioner 1 according to Embodiment 1, the main body 61a of the first motor 61 and the main body 62a of the second motor 62 are the first duct 51 and the second duct. The first duct 51 and the second duct 52 are arranged in parallel with the longitudinal direction of the first duct 51 and the second duct 52. In the air conditioner according to Embodiment 1, the rotation shaft 61 b of the first motor 61 and the rotation shaft 62 b of the second motor 62 are perpendicular to the first duct 51 and the second duct 52. Are alternately arranged so as to extend in opposite directions. Furthermore, in the air conditioner 1 according to the first embodiment, the partition member 8 extends in parallel between the first duct 51 and the second duct 52, and the main body portion 61 a of the first motor 61. And a plurality of (two in the first embodiment) motor support portions 81 that fix the main body portion 62a of the second motor 62 to the opposite sides of the rotation shafts 61b and 62b, and a plurality of adjacent motors. There is a connecting portion 82 (one in the first embodiment) for connecting the support portion 81.

  According to the first embodiment, the partition member 8 that fixes the main body portion 61a of the first motor 61 and the main body portion 62a of the second motor 62, and the space having the first duct 51 and the second duct Since the space having the space 52 is partitioned and becomes an independent air passage that does not interfere with each other, the pressure loss of the air passage can be reduced. Therefore, according to the first embodiment, since the efficiency of the first centrifugal fan 71 and the second centrifugal fan 72 can be increased, the power consumption of the first motor 61 and the second motor 62 can be suppressed. Can do. As a result, the energy consumption of the first motor 61 and the second motor 62 can be reduced, and the first motor 61 and the second motor 62 can be used for a long time.

  Moreover, according to this Embodiment 1, the air conditioner 1 can be reduced in size. This will be described below with reference to FIGS. In addition, the white arrow of FIG. 2 represents the flow of air.

  FIG. 2 is a schematic cross-sectional view showing an example of a conventional air conditioner 1. In FIG. 2, the first motor 61 and the second motor 62 are arranged at the same position in the height direction, and are arranged in parallel in the lateral direction so as to face the same direction. That is, the first motor 61 and the second motor 62 in FIG. 2 are arranged between the first duct 51 and the second duct 52 as in the air conditioner 1 of the first embodiment. They are not arranged in parallel with the longitudinal direction of the duct 51 and the second duct 52. Further, the first centrifugal fan 71 and the second centrifugal fan 72 are arranged in parallel in the horizontal direction at the same position in the height direction. Further, the first motor 61 is fixed to an L-shaped partition member 8 provided between the first duct 51 and the second duct 52, and the second motor 62 is disposed inside the housing 2. It is fixed to the side.

  In the following description, the widths of the first housing side air passage 91, the second housing side air passage 92, the first motor side air passage 93, and the second motor side air passage 94 are the same shortest width A. Suppose that The first motor 61 and the second motor 62 are of the same type, and the width of the main body portion 61a of the first motor 61 and the main body portion 62a of the second motor 62 in the rotation axis direction are the same. It is assumed that the motor width is B. It is assumed that the first duct 51 and the second duct 52 have the same cross-sectional width C. The fan diameters of the first centrifugal fan 71 and the second centrifugal fan 72 are the same fan diameter D.

  Here, the first housing side air passage 91, the second housing side air passage 92, the first motor side air passage 93, and the second motor side air passage 94 are the first centrifugal fan 71 and the second air passage 94, respectively. In order for the centrifugal fan 72 to suck in air, it is necessary to provide the shortest width A so as to be equal to or larger than ½ of the fan diameter D, that is, A ≧ D / 2.

  In the case of the conventional air conditioner 1 shown in FIG. 2, the width of the housing 2 is 4A + 2B + 2C. On the other hand, in the case of the air conditioner 1 according to the first embodiment shown in FIG. 1, the width of the casing 2 is 4A + B + 2C, and the casing 2 can be configured to be smaller by the motor width B.

  As described above, according to the first embodiment, it is possible to reduce the size of the air conditioner 1 while securing the air passage for the first centrifugal fan 71 and the second centrifugal fan 72 to suck in air. it can.

  Further, if the first motor 61 and the second motor 62 are of the same type and the same width, the manufacturing cost can be reduced. Cost reduction during manufacturing can also be achieved by making the fan diameters of the first centrifugal fan 71 and the second centrifugal fan 72 the same.

Embodiment 2. FIG.
The air conditioner 1 which concerns on Embodiment 2 of this invention is demonstrated using FIG. The white arrows in FIG. 3 represent the air flow.

  FIG. 3 is a schematic cross-sectional view showing an example of the air conditioner 1 according to the second embodiment. In the air conditioner 1 according to the second embodiment of the present invention, the third motor 63 is the same as the main body 61a of the first motor 61 and the main body 62a of the second motor 62 of the first embodiment. Between the first duct 51 and the second duct 52, the main body 63a and the main body 64a of the fourth motor 64 are parallel to the longitudinal direction of the first duct 51 and the second duct 52. Has been placed. Further, similarly to the rotating shaft 61b of the first motor 61 and the rotating shaft 62b of the second motor 62 in the first embodiment, the rotating shaft 63b of the third motor 63 and the rotating shaft of the fourth motor 64 are used. 64 b are arranged so as to be alternately opposite to each other in the vertical direction with respect to the first duct 51 and the second duct 52.

In the air conditioner 1 according to the second embodiment of the present invention, the third centrifugal fan 73 driven by the third motor 63 in addition to the first centrifugal fan 71 includes the first duct 51. Arranged inside. The rotation shaft of the third centrifugal fan 73 is fixed to the tip portion of the rotation shaft 63 b of the third motor 63. One side surface or both side surfaces of the third centrifugal fan 73 on the air suction side are fixed to the inner surface of the first duct 51. The first duct 51 is further provided with a suction port (not shown) at a position facing the air suction port of the third centrifugal fan 73.
The first duct 51 is further provided with a suction port (not shown) at a position facing the air suction port of the first centrifugal fan 71.

  Further, in the air conditioner 1 according to Embodiment 2 of the present invention, in addition to the second centrifugal fan 72, the fourth centrifugal fan 74 driven by the fourth motor 64 includes the second duct 52. Arranged inside. The rotation shaft of the fourth centrifugal fan 74 is fixed to the tip portion of the rotation shaft 64 b of the fourth motor 64. One side surface or both side surfaces of the fourth centrifugal fan 74 on the air suction side are fixed to the inner side surface of the second duct 52. The second duct 52 is further provided with a suction port (not shown) at a position facing the air suction port of the fourth centrifugal fan 74.

  Furthermore, in the air conditioner 1 according to Embodiment 2 of the present invention, the main body 63a of the third motor 63 is a motor support that extends in parallel between the first duct 51 and the second duct 52. The portion 81 is fixed on the opposite side of the rotation shaft 63 b of the third motor 63. In addition, the main body portion 64a of the fourth motor 64 is connected to a separate motor support portion 81 that extends in parallel between the first duct 51 and the second duct 52, and the rotation shaft 64b of the fourth motor 64. It is fixed on the opposite side. Since the structure of the other air conditioner 1 is the same as that of the first embodiment described above, description thereof is omitted.

  In the air conditioner 1 of the second embodiment, the performance of the air conditioner 1 can be maintained by reducing the performance of each centrifugal fan and motor by disposing a plurality of centrifugal fans and motors. Therefore, in the air conditioner 1 according to the second embodiment, the fan diameter D and the motor width B of the centrifugal fan can be reduced, and the shortest width A of the air passage can be reduced. It becomes possible.

Other embodiments.
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, although the air conditioner 1 of the above-described embodiment is a vertical type air conditioner, the air conditioner 1 is not limited to this and may be a ceiling-embedded air conditioner or the like.

  Moreover, the air conditioner 1 of the above-mentioned embodiment is, for example, a fan coil type air conditioner, an air purifier, a dehumidifier, a humidifier, a cooler, a heater, or a device having a plurality of these functions. Also good.

  In the above-described embodiment, one centrifugal fan is driven by one motor, but two or more centrifugal fans in the same duct may be driven by a single motor. Good.

  In the above-described embodiment, two ducts are arranged in parallel in the height direction. However, three or more ducts may be arranged in parallel in an arbitrary direction. Moreover, in the above-mentioned embodiment, although the position of the blower outlet was set as the upper direction, you may change to arbitrary positions according to the form of an air conditioner.

  Further, the above-described embodiments can be used in combination with each other.

  DESCRIPTION OF SYMBOLS 1 Air conditioner, 2 housing | casing, 3 suction grille, 4 heat exchanger, 8 partition member, 31 inlet port, 51 1st duct, 51a 1st outlet, 52 2nd duct, 52a 2nd outlet Mouth, 61 first motor, 62 second motor, 63 third motor, 64 fourth motor, 61a, 62a, 63a, 64a body, 61b, 62b, 63b, 64b rotating shaft, 71 first Centrifugal fan, 72 2nd centrifugal fan, 73 3rd centrifugal fan, 74 4th centrifugal fan, 81 motor support part, 82 connection part, 91 1st housing | casing side air path, 92 2nd housing | casing side air path , 93 first motor side air passage, 94 second motor side air passage.

Claims (5)

A housing,
A heat exchanger that is disposed inside the housing and performs heat exchange with air sucked into the housing;
A plurality of ducts that are arranged in parallel with each other inside the housing and blow out the air heat-exchanged by the heat exchanger into the room,
A rotating shaft and a main body portion for fixing one end of the rotating shaft, respectively, and the rotating shaft is disposed in the plurality of ducts so as to be alternately opposite to each other in a vertical direction with respect to a longitudinal direction of the duct; A plurality of motors arranged in parallel with the longitudinal direction of the duct between the plurality of ducts,
A plurality of centrifugal fans respectively driven by the plurality of motors, each disposed at least one inside the plurality of ducts;
A plurality of motor support portions that extend in parallel between the plurality of ducts and that respectively fix the main body portions of the plurality of motors on the opposite side of the rotation shaft, and a plurality of adjacent motor support portions are connected. An air conditioner comprising: a partition member having one or more connecting portions.   The air conditioner according to claim 1, wherein each of the plurality of centrifugal fans is driven by a separate motor.   The air conditioner according to claim 1 or 2, wherein the plurality of centrifugal fans are sirocco fans or turbo fans.   The air conditioner according to claim 1, wherein the plurality of centrifugal fans have the same fan diameter.   The air conditioner according to any one of claims 1 to 4, wherein the plurality of motors are the same.

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