JP5067180B2 - Ventilation equipment - Google Patents

Description

The present invention relates to a ventilator that supplies air outside a building to the room and exhausts air inside the building to the outside of the building.

  2. Description of the Related Art Conventionally, ventilators that supply fresh outdoor air into each room and exhaust indoor dirty air to the outdoors have been widely used. In recent years, all buildings with living rooms have been obligated to install a 24-hour ventilation facility, and the demand for ventilation devices is increasing.

  Patent Document 1 discloses a heat exchange type ventilator that performs heat exchange. The heat exchange ventilator is equipped with a main body case, and one side wall of the main body case supplies an intake port for taking in outside air (Outer Air) and the supplied air (Supply Air) into the room And an exhaust port for discharging the air (Exhaust Air) sucked into the room from the suction port, which will be described later, to the outside. The lower surface of the main body case is provided with a suction port for sucking air (Return Air) from the room. The suction port is configured by a gap portion between the lid plate and the main body case that closes the opening on the lower surface side of the main body case. A duct joint is connected to each of the intake port, the air supply port, and the exhaust port, and a duct is connected to each of these duct joints.

  A motor is installed at one end inside the main body case, an air supply fan is attached to one shaft portion of the motor, and an exhaust fan is attached to the other shaft portion. In addition, a heat exchange element that exchanges heat between the air blown from the air supply fan and the air sucked by the exhaust fan is provided on the other end side inside the main body case.

  With such a configuration, the main body case has an OA-SA air passage through which fresh air taken from outside is supplied indoors, and an RA-EA air passage that sucks indoor dirty air and sends it out to the outdoors. It is formed.

JP 2007-24415 A

  However, the heat exchange ventilator disclosed in Patent Document 1 has the following problems.

  Outside air taken in from the intake port passes through the duct joint and the duct from the air supply port, and is supplied to each room. On the other hand, the air sucked from the suction port is directly taken into the case and discharged to the outside from the duct joint and the duct connected to the exhaust port via the heat exchange element. That is, when taking in air from a suction inlet, it will be taken in directly into a case without going through a duct joint and a duct.

  For this reason, the OA-SA passage passes through the duct joint and the duct connected to the air supply port, so that the ventilation resistance is higher than that of the RA-EA passage. As a result, there is a problem that the air volume passing through the OA-SA passage is smaller than the air volume passing through the RA-EA passage, and efficient ventilation cannot be performed.

  Then, this invention solves the said subject, The objective is to provide the ventilation apparatus which enabled adjustment of the air volume which passes a RA-EA channel | path.

In order to solve the above problems, a ventilating apparatus according to the present invention takes in air outside a building from an intake port and supplies the intake air into the room from the intake port, and inhales from the intake port. A ventilator main body formed with an exhaust air passage for exhausting indoor air from the exhaust outlet to the outside of the building, and provided inside the ventilator main body, and rotated by a driving means to exhaust the air outside the building An air supply fan that is supplied into the room, an exhaust fan that is provided inside the ventilator main body and is rotationally driven by a driving means and sucks air in the room through the air inlet, and the air supply fan is rotationally driven. Thus, the air supply unit has a first opening through which the air is sucked, and is provided in the supply air passage. The supply fan storage unit for storing the supply fan and the exhaust fan are driven to rotate. Before Air is sucked, a second opening which is different opening diameter than the first opening of the air supply fan housing portion, wherein provided in the exhaust air passage, for accommodating the exhaust fan An exhaust fan accommodating portion , a partition member for partitioning the first chamber in which the air supply fan accommodating portion is provided and the second chamber in which the exhaust fan is provided, and heat insulation attached to the partition member A member and an attachment member for installing the driving means on the partition member, the attachment member being provided on a surface facing the partition member of the connection portion and the connection portion for attachment to the partition member A boss portion protruding in a direction opposite to the partition member, wherein the length of the boss portion in the height direction is shorter than the thickness of the heat insulating member, and the driving means is Through the insulation When attached to the serial partition member, it is characterized in that the opposing surface of the boss portion of the mounting portion is adapted to abut on the partition member.

  In the present invention, the air supply fan is driven by the rotational drive of the drive means, the outside air is taken in from the intake port of the ventilation device body, and passes through the first opening of the air supply fan accommodating portion in the air supply air passage. And supplied to the air supply port. An air supply duct extending to each room is connected to the air supply opening, and outside air is supplied to each room through the air supply duct.

  Further, the exhaust fan is driven by the rotational drive of the driving means, the indoor air is sucked from the suction port of the ventilator main body, passes through the second opening of the exhaust fan accommodating portion in the exhaust air passage, and the exhaust port To be supplied. An exhaust duct extending to the outside is connected to the exhaust port, and indoor air is discharged to the outside through the exhaust duct.

  According to the present invention, the opening diameter of the second opening portion of the exhaust fan accommodating portion and the opening diameter of the first opening portion of the air supply fan accommodating portion are made different to pass through the second opening portion. The air volume can be adjusted. That is, the ventilation resistance of the exhaust air passage can be adjusted.

  For example, by configuring the opening diameter of the second opening portion of the exhaust fan accommodating portion to be smaller than the opening diameter of the first opening portion of the supply fan accommodating portion, the air volume of the air passing through the second opening portion And the ventilation resistance of the exhaust air passage can be increased. Further, since it is not necessary to adjust the air volume by changing the external dimensions of the air supply fan and the exhaust fan, the air supply fan and the exhaust fan having the same external dimensions can be used. Thereby, cost reduction can be aimed at.

  According to the present invention, efficient ventilation can be performed by adjusting the air volume ratio between the air volume passing through the supply air path and the air volume passing through the exhaust air path.

[First Embodiment]
Embodiments of the present invention will be described below with reference to the drawings.
<Configuration example of heat exchange type ventilator>
Next, the internal configuration of the heat exchange type ventilator 10 will be described in detail. FIG. 1 is a cross-sectional view showing a configuration of a heat exchange type ventilator 10 as a ventilator according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of the lower surface of the heat exchange type ventilator 10. 3, 4 and 5 are diagrams showing the configuration of the side surface of the heat exchange type ventilator. In this example, an example in which a heat exchange type ventilator (first type ventilator) 10 that mechanically supplies and exhausts air using an air supply fan 32 and an exhaust fan 34 will be described.

  As shown in FIGS. 1 to 5, the heat exchange ventilator 10 includes an air supply fan 32 that takes outside air OA (Outer Air) outside the building into the room, and exhaust that sends out indoor air RA (Return Air) to the outdoors. The fan 34, the motor 40 that rotationally drives the air supply fan 32 and the exhaust fan 34, the heat exchange element 62 that exchanges heat between the outside air OA and the indoor air RA, the cabinet 12 that houses these, and the lower surface of the cabinet 12 And a front panel 14 attached to the vehicle.

  The cabinet 12 is an example of a ventilation device main body, and is a casing formed into a rectangular parallelepiped box shape by ABS (Acrylonitrile Butadiene Styrene) resin. The cabinet 12 has four side wall portions 12a to 12d and an upper surface portion 12e, and a main body opening 25 is provided on the lower surface thereof. A flange portion 12g for detachably attaching the front panel 14 is provided at the lower ends of the side wall portions 12a to 12d. The flange portion 12g extends outward by a predetermined length and is provided over the entire circumference of the lower ends of the side wall portions 12a to 12d.

  As shown in FIGS. 1 and 4, the side wall 12 a of the cabinet 12 is formed with an intake port 52 for taking in outside air OA and an exhaust port 54 for discharging indoor air RA to the outdoors. An OA duct joint 80 is connected to the intake port 52, and an EA duct joint 82 is connected to the exhaust port 54. Each of the OA duct joint 80 and the EA duct joint 82 is connected to a duct extending to the outdoors as described later. As shown in FIG. 1, an air supply port 64 for supplying air SA (Supply Air) heat-exchanged by the heat exchange element 62 into each room is formed in the side wall portion 12 b of the cabinet 12. In this example, four air supply ports 64 are formed so that air SA can be supplied to four rooms. An SA duct joint 84 extending to each room is connected to the air supply port 64. As shown in FIGS. 4 and 5, the side wall portion 12 c of the cabinet 12 is provided with a non-illustrated auxiliary suction port for sucking air in the room (the room other than the room where the heat exchange type ventilator 10 is installed). The sub suction duct joint 86 is connected to the sub suction port.

  On the lower surface of the cabinet 12, an OA plate metal 16 to be described later is provided with a slight gap from the side wall portion 12b of the cabinet 12 (so that a part of the main body opening 25 is opened). This gap functions as a suction port 58 for sucking indoor air RA.

  With such a configuration, the supply air path OA-SA for taking the outside air OA outside the building from the intake port 52 and supplying the heat-exchanged air SA into the room from the supply port 64 into the cabinet 12. Then, an exhaust air passage RA-EA is formed for sucking the indoor air RA from the suction port 58 and discharging the air EA heat-exchanged from the exhaust port 54 to the outside of the building.

  The upper surface portion 12e of the cabinet 12 includes a support portion 12h for supporting the upper end portion of the heat exchange element 62, and a wind direction of the air EA that forms a part of the exhaust air path RA-EA and passes through the heat exchange element 62. And an inclined portion 12i for adjusting the angle. The support portion 12h is provided at a tip portion of a portion where the upper surface portion 12e is bent in a substantially V-shaped cross section in the inner direction. The inclined portion 12i is provided at a position where the air EA that has passed through the heat exchange element 62 hits, and the cabinet is arranged from the upper end of the heat exchange element 62 so that the crossing angle with the wind direction of the air EA that has passed through the heat exchange element 62 becomes small. 12 is inclined toward the upper surface. Accordingly, the air EA can smoothly guide the air EA to the exhaust fan 34 because the air EA hits the inclined portion 12i at a gentle inclination angle.

  As shown in FIG. 1, the interior of the cabinet 12 is divided into a fan installation chamber 30 in which the air supply fan 32 and the exhaust fan 34 are installed, and a heat exchange chamber 60 in which the heat exchange element 62 is installed. The fan installation chamber 30 is divided into an OA chamber 46 in which an air supply fan 32 is installed and an EA chamber 48 in which an exhaust fan is installed by a partition member 22 extending in a plane direction from a substantially intermediate position in the height direction of the cabinet 12. Has been. The partition member 22 is made of, for example, a high strength iron plate. On the lower surface of the partition member 22, a packing member 24 (see FIG. 6) that constitutes an example of a heat insulating member for preventing condensation generated due to a temperature difference between the OA chamber 46 and the EA chamber 48 is attached.

  FIG. 6 is a diagram showing the configuration of the OA chamber 46 and the EA chamber 48. FIG. 7 is a view showing the configuration of the air supply fan case 70. FIG. 8 is a diagram showing the configuration of the exhaust fan case 90. As shown in FIGS. 6 and 7, the OA chamber 46 is provided with an air supply fan case 70 for accommodating the air supply fan 32. The air supply fan case 70 constitutes an example of an air supply fan accommodating portion, is made of foamed resin (for example, foamed polystyrene, foamed polypropylene, foamed polyethylene, etc.) and is detachably attached to the cabinet 12.

  As shown in FIGS. 6 and 7, air supply fan case 70 is formed by being surrounded by bottom plate portion 71, wall portion 72 provided at the periphery of bottom plate portion 71, bottom plate portion 71 and wall portion 72. And a recess 74. The opening shape of the recess 74 has a substantially circular shape in plan view larger than the outer shape of the air supply fan 32. The wall portion 72 is formed with an air outlet 76 that allows the recess 74 (the air supply fan case 70) and the heat exchange chamber 60 to communicate with each other. The opening width of the air outlet 76 is defined by a tongue portion 72 a constituting a part of the wall portion 72 so that the outside air OA taken in by the air supply fan 32 is efficiently supplied to the heat exchange element 62. It has become. As shown in FIG. 7, a flat portion 77 having a constant distance is provided downstream of the air outlet 76, and a stepped portion 79 is provided at the downstream end of the flat portion 77. The angle of the stepped portion 79 is 90 °, for example. Thereby, generation | occurrence | production of the noise (abnormal noise) at the time of the external air OA from the blower outlet 76 passing through this area | region can be prevented.

  In the bottom plate portion 71 of the air supply fan case 70, an air supply opening portion 78 (first opening) called a bell mouth having a circular shape in plan view, which is slightly smaller than the outer shape of the air supply fan 32, penetrates in the thickness direction. Part) is formed. The air supply opening 78 is provided on the upstream side of the air supply fan 32 in the air supply air passage OA-SA, and external air OA from the intake port 52 is supplied into the air supply fan case 70 by the rotational drive of the air supply fan 32. It is configured to capture (see FIG. 1).

  Further, the OA chamber 46 has a space portion S <b> 1 constituted by the wall portion 72 of the air supply fan case 70 and the partition member 22, as shown in FIGS. 1 and 6. This space portion S1 is a space in which the outside air OA taken in from the intake port 52 is passed and supplied to the air supply fan 32, and a motor 40 described later is installed.

  As shown in FIGS. 6 and 8, the EA chamber 48 is provided with an exhaust fan case 90 for accommodating the exhaust fan 34. The exhaust fan case 90 constitutes an example of an exhaust fan housing portion, is made of foamed resin (for example, foamed polystyrene, foamed polypropylene, foamed polyethylene, etc.) and is detachably attached to the cabinet 12.

  The exhaust fan case 90 includes a bottom plate portion 91, a wall portion 92 provided at the periphery of the bottom plate portion 91, and a recess 94 that is surrounded by the bottom plate portion 91 and the wall portion 92. The opening shape of the recess 94 has a substantially circular shape in plan view larger than the outer shape of the exhaust fan 34. The wall portion 92 is formed with an air outlet 96 that allows the recess 94 (exhaust fan case 90) and the exhaust port 54 to communicate with each other. An exhaust opening (second opening) 98 called a bell mouth having a circular shape in plan view that is slightly smaller than the outer shape of the exhaust fan 34 penetrating in the thickness direction is formed in the bottom plate portion 91 of the exhaust fan case 90. Is done. The exhaust opening 98 is provided on the upstream side of the exhaust fan 34 in the exhaust air passage RA-EA, and is configured to suck the air RA from the suction port 58 into the exhaust fan case 90 by the rotational drive of the exhaust fan 34. The

  Further, as shown in FIG. 6, the EA chamber 48 has a space portion S <b> 2 constituted by the wall portion 92 of the exhaust fan case 90 and the partition member 22. The space S <b> 2 is a space through which the air RA sucked from the suction port 58 passes and is supplied to the EA chamber 48.

  Here, the opening diameter W2 of the exhaust opening 98 of the exhaust fan case 90 is configured to be smaller than the opening diameter W1 of the supply opening 78 of the supply fan case 70 as shown in FIGS. Is done. Thereby, the airflow resistance of the exhaust air path RA-EA can be increased by adjusting and suppressing the air volume of the air EA passing through the exhaust opening 98. As a result, the air volume passing through the supply air path OA-SA and the air volume passing through the exhaust air path RA-EA can be adjusted to be the same. Thereby, the supply fan 32 and the exhaust fan 34 can be made the same fan.

  As shown in FIGS. 1 and 6, the motor 40 is configured as a single unit, and rotates the air supply fan 32 and the exhaust fan 34 by the same rotation in conjunction with each other. As shown in FIG. 1, the motor 40 is installed in a space S1 in the OA chamber 46, and is attached and fixed to the partition member 22 by a motor case described later. Thereby, since the motor 40 is installed in the supply air path OA-SA, the outside air OA taken in from the intake port 52 is cooled by directly hitting the motor 40.

  Further, the motor 40 is connected to a control board (not shown) mounted on the partition member 22 and its rotational drive is controlled. A rotating shaft 42 a extending to the OA chamber 46 and a rotating shaft 42 b extending through the partition member 22 to the EA chamber 48 are provided at the lower end of the motor 40.

  9 is a perspective view showing the configuration of the motor case 114, FIG. 10 is a diagram showing the configuration of the side surface, FIG. 11 is a diagram showing the configuration of the upper surface, and FIG. 12 is the configuration of the lower surface. FIG. FIG. 13A is a cross-sectional view showing the configuration of the motor case, and FIG. 13B is an enlarged view of a main part A thereof.

  The motor case 114 constitutes an example of an attachment member, and protects the motor 40 and fixes the motor 40 to the partition member 22 for attachment. The motor case 114 is made of a resin material and has a cylindrical body 116 that covers the outer periphery of the motor 40. On the peripheral surface of the cylindrical body 116, a cooling hole 124 is formed for cooling by applying outside air OA to the heat generated from the motor 40.

  A connecting portion 120 for attaching the motor case 114 to the partition member 22 is provided at the lower end portion of the cylindrical body 116. The connecting portion 120 is made of a flat plate member made of a resin material extending outward from the lower end edge of the cylindrical body 116, and a plurality (5 in this example) are equally spaced along the circumferential direction of the lower end edge of the cylindrical body 116. Provided. The connecting part 120 may be formed integrally with the cylindrical body 116 or may be constituted by another member. The connecting portion 120 is provided with a screw hole 122 for inserting a screw 108 (see FIG. 14) described later.

As shown in FIGS. 12 and 13, a boss portion 126 that protrudes by a predetermined height H <b> 1 is provided on the opposite surface (opposing surface 120 a) of the connecting portion 120 to the partition member 22. As will be described later, the boss portion 126 is for attaching the motor case 114 in a horizontal posture without tilting when the motor case 114 is attached to the partition member 22 and the packing member 24. The height H1 of the boss portion 126 is selected so that the facing surface 120a (tip surface) of the boss portion 126 contacts the partition member 22 when the packing member 24 is crushed. That is, in this example, the height H1 of the boss portion 126 satisfies the relationship shown below (see FIG. 14).
Thickness H2 of packing member 24 = height H1 of boss portion 126 + crush amount H3 of packing member 24

  Next, an operation example when the motor case 114 is attached to the partition member 22 will be described. 14 (A) to 14 (D) are views showing an operation when the motor case 114 is attached to the packing member 24. FIG. As shown in FIG. 14A, the partition member 22 is formed with a screw hole 22a into which the screw 108 is assembled, and the packing member 24 is formed with an insertion hole 24a through which the screw 108 is inserted. Yes.

  As shown in FIG. 14A, the screw hole 22a of the partition member 22 and the screw hole 122 of the connecting portion 120 of the motor case 114 are aligned. Next, as shown in FIG. 14B, the boss portion 126 of the motor case 114 is engaged with the opening edge of the insertion hole 24 a of the packing member 24. Next, as shown in FIG. 14C, the motor case 114 is fastened to the partition member 22 by screwing screws 108 into the screw holes 122 and 22a. As shown in FIG. 14D, the elastic packing member 24 is crushed with a constant crushing amount H5 by tightening the screw 108, and the opposing surface 120a of the boss portion 126 of the motor case 114 abuts against the partition member 22. Touch. When the boss portion 126 abuts, the tightening of the screw 108 is stopped and the crushing of the packing member 24 is stopped.

  FIGS. 15A and 15B are views showing a state in which the motor case 114 is attached to the partition member 22. As shown in FIG. 15, in this example, the motor case 114 is attached and fixed to the partition member 22 by five connecting portions 120. As shown in FIG. 14D, the packing member 24 is crushed with a uniform crushing amount by the boss portion 126 of the connecting portion 120, so the motor 40 and the motor case 114 are attached to the partition member 22 in a horizontal posture (state). It is done. A rubber member 26 is inserted between the inner side of the upper end of the motor case 114 and the motor 40.

  16A is a perspective view showing the configuration of the upper surface side of the air supply fan 32, and FIG. 16B is a perspective view showing the configuration of the lower surface side thereof.

  As shown in FIG. 1, the air supply fan 32 takes outside air OA from the intake port 52 and supplies the taken outside air OA into the room via the heat exchange element 62, and is installed in the OA chamber 46. Is done. As shown in FIG. 16, the air supply fan 32 is composed of a sirocco fan, and includes a disk-shaped base 102 and a large number of blades 104 provided at equal intervals along the peripheral edge of the base 102. An insertion hole 106 through which the rotating shaft 42a (see FIG. 1) of the motor 40 is inserted is formed at the center of the base 102, and the peripheral edge thereof is curved and recessed inward. As shown in FIG. 1, the air supply fan 32 is mounted with a rotating shaft 42 a of the motor 40 through the insertion hole 106 in an inverted state, and the air supply fan 32 is rotated by the rotational driving of the motor 40. It is designed to rotate around. In this example, since the outside air OA flows in from the side opposite to the base 102 of the air supply fan 32, the base 102 is not formed with an opening hole for venting the outside air OA as in the related art. Therefore, noise generated by the opening hole can be prevented.

  The exhaust fan 34 sucks indoor air RA from the suction port 58 and discharges the air RA sucked through the heat exchange element 62 to the outside from the exhaust port 54, and is installed in the EA chamber 48. The exhaust fan 34 is attached with a rotating shaft 42b of the motor 40, and the exhaust fan 34 rotates around the rotating shaft 42b by the rotational drive of the motor 40. The configuration of the exhaust fan 34 is the same as the configuration of the air supply fan 32 shown in FIG.

  In this example, as described above, the air volume of the supply air path OA-SA and the exhaust air path RA-EA is adjusted by the opening diameter W1 of the supply air opening 78 and the opening diameter W2 of the exhaust air opening 98 ( Since it is not necessary to adjust the air volume on the fan side, the air supply fan 32 and the exhaust fan 34 can have the same outer dimensions.

  As shown in FIG. 1, the heat exchange element 62 constitutes an example of a heat exchange means, is provided at a position where the supply air passage OA-SA and the exhaust air passage RA-EA intersect, and is taken in from the intake port 52. Heat exchange is performed between the outside air OA and the air RA sucked from the suction port 58. The heat exchanging element 62 has a corrugated paperboard and a corrugated paperboard bonded to a flat paperboard to form a corrugated air passage. Are stacked in multiple layers so as to be orthogonal (not shown).

  As shown in FIG. 1, each of the corner portions of the heat exchange element 62 is supported by the four holding members provided in the heat exchange chamber 60 while being inclined at a predetermined angle. Specifically, as shown in FIG. 1, the heat exchange element 62 is supported by a support part 12 h integrally formed with the cabinet 12 at the upper end, and supported by a support part 15 a of the OA spring member 15. The right end portion is supported by a support portion 37a formed between the wall portion 72 of the air supply fan case 70 and the wall portion 92 of the exhaust fan case 90, and the left end portion is an inner surface of the side wall portion 12b made of a resin material of the cabinet 12. It is supported by the support part 37b provided in the side, and is attached to the cabinet 12 so that attachment or detachment is possible.

  FIG. 17A is a perspective view showing a configuration of the outside air cleaning filter 140, and FIG. 17B is a cross-sectional view taken along the line AA. FIG. 18A is a diagram illustrating a configuration of a main part of the filter mounting portion 39 on which the outside air cleaning filter 140 is mounted, and FIG. 18B is a diagram illustrating an example in which the outside air cleaning filter 140 is mounted on the filter mounting portion 39. is there.

  As shown in FIG. 1, the heat exchange ventilator 10 includes an outside air cleaning filter 140 for removing pollen and dust contained in the outside air OA. The outside air cleaning filter 140 is detachably attached to a filter mounting portion 39 formed near (downstream) the intake port 52 inside the cabinet 12.

  As shown in FIG. 17, the outside air cleaning filter 140 includes a rectangular frame portion 142 and a filter sheet (sheet portion) 144 attached to the frame portion 142. As shown in FIG. 18A, the filter mounting portion 39 is fitted with a guide portion (not shown) for guiding the side surface portion of the outside air cleaning filter 140 so as to be slidable and the upper side portion 142a of the outside air cleaning filter 140. And a groove (concave portion) 39a. The thickness D1 of the upper side portion 142a of the frame portion 142 is formed to be shorter than the length D2 of the groove portion 39a of the filter mounting portion 39. In this example, the depth D2 of the groove 39a of the filter mounting portion 39 and the thickness D1 of the upper side portion 142a of the outside air cleaning filter 140 are set to be substantially the same. As the filter sheet 144, for example, HEPA (High Efficiency Particulate Air) formed by bending a filter material into a bellows shape is used.

  As shown in FIG. 18B, when the outside air cleaning filter 140 is attached to the filter mounting portion 39 in the cabinet 12, the upper side portion 142a of the outside air cleaning filter 140 is embedded in the filter mounting portion 39, and the step portion A flat air supply passage OA-SA is formed. Thereby, the ventilation resistance when the outside air OA passes through the outside air cleaning filter 140 can be reduced, and the generation of noise can be avoided.

  FIG. 19 is a diagram showing a configuration of the OA pressing member 15, the OA pressing sheet metal 16, and the front panel 14 attached to the lower surface of the cabinet 12. As shown in FIG. 1, the heat exchange type ventilator 10 includes an OA pressing member 15, an OA pressing sheet metal 16, and a front panel 14.

  The front panel 14 has a slightly larger outer shape (rectangular view in plan view) than the main body opening 25 of the cabinet 12, and is a member for covering and concealing the main body opening 25 of the cabinet 12. The front panel 14 is detachably attached to the flange portion 12g of the cabinet 12 with screws or the like.

  FIG. 20 is a diagram illustrating a configuration of the RA suction port 162 and the slide filter 164 provided in the front panel 14. As shown in FIG. 20, the RA suction port 162 is for supplying indoor air RA to a suction port 58 (see FIG. 1) formed in the rear cabinet 12, and is formed on one end side of the front panel 14. Is done. The RA suction port 162 is provided at a position facing the suction port 58 (see FIG. 1) provided in the cabinet 12, and a plurality of RA suction ports 162 are formed so that the longitudinal direction of the RA suction port 162 is along the short side of the front panel 14. Is done.

  A mounting hole 166 for mounting the slide filter 164 to the RA suction port 162 is formed in the end surface 14a of the front panel 14 on the RA suction port 162 side. A slide filter 164 is slidably attached to the mounting hole 166. Thereby, dust etc. contained in indoor air RA can be removed.

  FIG. 21 is a diagram illustrating a configuration of the filter insertion portion 152 provided in the front panel 14. As shown in FIG. 21, the filter insertion portion 152 allows the outside air cleaning filter 140 to be attached to the cabinet 12 with the front panel 14 attached to the cabinet 12, and is provided on the other end side of the front panel 14. . The filter insertion portion 152 includes a claw portion 160 that can be engaged with the front panel 14 and an operation portion 156 for operating the claw portion 160 so as to be able to appear and retract. A mounting hole 158 corresponding to the shape of the filter insertion portion 152 is formed in a portion of the front panel 14 where the filter insertion portion 152 is mounted. A fitting portion 168 for engaging the claw portion 160 is formed at a position corresponding to the claw portion 160 at the edge of the mounting hole 158 of the front panel 14. One of the long sides of the filter insertion part 152 is connected to the front panel 14 so as to be openable and closable, for example, by a hinge part (not shown). Accordingly, the outside air cleaning filter 140 can be mounted in the cabinet 12 by opening the filter insertion section 152 with the operation section 156 in a state where the filter insertion section 152 is mounted on the front panel 14.

  FIG. 22 is a diagram illustrating a state before the OA male member 15 is attached to the recess 74 of the air supply fan case 70. FIG. 23 is a view showing a state where the OA male member 15 is attached to the recess 74 of the air supply fan case 70.

  As shown in FIGS. 1, 19, 22, and 23, the OA leather member 15 is made of foamed resin (for example, foamed polystyrene, foamed polypropylene, foamed polyethylene, or the like), and the recess 74 of the air supply fan case 70 of the cabinet 12. It is used as a lid for closing. Further, on the inner surface side of the OA spring member 15, a support portion 15a that supports the lower end portion of the heat exchange element 62, and a part of the supply air passage OA-SA and outside air OA that passes through the supply air passage OA-SA. And an inclined portion 15b for adjusting the wind direction. The support portion 15a protrudes in a triangular cross section. The inclined portion 15b is gently inclined upward at an angle such that the outside air OA of the supply air passage OA-SA smoothly flows into the heat exchange element 62. Specifically, it is gently inclined from the planar position of the OA pressing member 15 to the position of the lower end portion of the heat exchange element 62.

  FIG. 24 is a view showing a state where the OA plate metal 16 is attached to the main body opening 25 of the cabinet 12.

  As shown in FIGS. 1, 19, and 24, the OA plate metal 16 is made of a high-strength metal member, and sucks in through the suction port 58 and the sheet metal main body 16 a that exposes the filter mounting portion 39 and covers the main body opening 25. An air volume adjusting unit 16b that adjusts the air volume of the air RA. The OA plate metal 16 constitutes an example of a metal member. The air volume adjusting part 16b is integrally formed on one end side of the sheet metal main body 16a via a step part. As described above, the air volume adjusting portion 16b is provided with a slight gap L2 from the side wall portion 12b of the cabinet 12 (so that a part of the main body opening 25 is opened). It functions as a suction port 58 for sucking the air RA. Therefore, the air volume of the air RA sucked from the suction port 58 can be adjusted by adjusting the width L1 of the air volume adjusting unit 16b and adjusting the gap L2 of the suction port 58. By covering the main body opening 25 with the OA press sheet metal 16 having high strength, noise generated from the heat exchange element 62 can be prevented.

<Operation example of heat exchange type ventilator>
Next, the operation of the heat exchange type ventilator 10 according to the present invention will be described with reference to FIG.
When the motor 40 is rotationally driven with the heat exchange ventilator 10 in the operating state, the supply fan 32 and the exhaust fan 34 rotate in conjunction with this. By the rotation of the air supply fan 32, the outside air OA passes through a duct (not shown), the OA duct joint 80 and the intake port 52 and is taken into the cabinet 12. The taken-in outside air OA passes through the air supply opening 78 of the air supply fan case 70, the air supply fan 32, and the inclined portion 15b of the OA wall member 15 constituting the air supply air passage OA-SA to the heat exchange element 62. Supplied. In the heat exchange element 62, heat exchange with room air is performed, and air SA whose temperature has been changed to a predetermined temperature is supplied to the air supply port 64. The air SA supplied to the air supply port 64 passes through the SA duct joint 84 connected to the air supply port 64 and is supplied to each room. In this way, fresh outdoor air OA is supplied to each room.

  On the other hand, the indoor air RA is sucked from the suction port 58 of the cabinet 12 through the front panel 14 by driving the exhaust fan 34. The sucked air RA is taken into the heat exchange element 62, and heat exchange with the outside air OA is performed in the heat exchange element 62, and the temperature is changed to a predetermined temperature. The air EA that has passed through the heat exchange element 62 passes through the inclined portion 12i of the cabinet 12 constituting the exhaust air passage RA-EA, the exhaust opening 98 of the exhaust fan case 90, and the exhaust fan 34, and is sent out to the exhaust port 54. . In this example, since the opening diameter W2 of the exhaust opening 98 is smaller than the opening diameter W1 of the supply opening 78, the air volume of the exhaust air path RA-EA is adjusted to be small. The air EA sent out to the exhaust port 54 passes through the EA duct joint 82 and a duct (not shown) and is discharged outdoors. In this way, the dirty air RA in the room is discharged outdoors.

  As described above, according to the present embodiment, the opening diameter W2 of the exhaust opening 98 of the exhaust fan case 90 is configured to be smaller than the opening diameter W1 of the supply opening 78 of the supply fan case 70. Therefore, the airflow resistance of the exhaust air path RA-EA can be increased by adjusting and suppressing the air volume of the air passing through the exhaust opening 98. As a result, the amount of air passing through the exhaust air passage RA-EA and the air supply air passage OA-SA that increases the airflow resistance by the amount passing through the SA duct joint 84 and the air supply duct 206 (see FIG. 25) are passed. It becomes possible to adjust the air volume to be the same. As a result, efficient heat exchange and ventilation using the heat exchange element 62 can be performed. Furthermore, since the air volume is adjusted by the exhaust opening 98, the air supply fan 32 and the exhaust fan 34 having the same outer dimensions can be used, and the cost can be reduced.

  Further, conventionally, since the packing member 24 has elasticity, when the motor case 114 is mounted on the packing member 24, it is difficult to make the tightening and tightening of the screws of the plurality of connecting portions 120 constant. It was difficult to make the crushing amount of the packing member 24 at each of the 120 screw tightening points constant. As a result, the motor 40 is mounted in an inclined posture, and abnormal noise occurs in the motor 40, and it is necessary to perform strict torque management in order to prevent the occurrence of abnormal noise. On the other hand, according to the present embodiment, by providing the boss portion 126 in the connecting portion 120 of the motor case 114, the packing member 24 is crushed with a uniform crushing amount. The motor case 114 can be attached to the partition member 22. As a result, it is not necessary to perform strict torque management as in the prior art, and the work burden can be reduced. Further, it is possible to avoid a decrease in the packing member 24 due to the motor case 114 being biased and applying a load to a part of the packing member 24, and condensation can be prevented.

<Installation example of heat exchange type ventilator>
FIG. 25 is a diagram showing a building 200 in which the heat exchange type ventilator 10 according to the present invention is installed. The building 200 has a two-story structure, and shows an example in which the heat exchange type ventilator 10 shown in FIG. 1 according to the present invention is attached to the first floor part.

  The building 200 has a plurality of rooms R1, R2, R3 and a corridor R4 partitioned by walls. The walls and the lower part of the doors that partition the rooms R1, R2, R3 and the corridor R4 are provided with not-shown louvers and undercuts.

  On the ceiling surface of the corridor R4 of the building 200, the heat exchange type ventilator 10 is installed with the front panel 14 exposed to the room. Air RA in the rooms R1, R2, and R3 flowing into the corridor R4 is sucked from the suction port 58 (see FIG. 1) located on the ceiling surface of the corridor R4 through an opening such as a louver or undercut.

  An air supply grill 208 is attached to each ceiling surface of the rooms R1, R2, R3. In this example, the room R1 is a living room with a large area, so the air supply grill 208 is attached to two places on the ceiling surface of the room R1. Each of the four air inlets 64 (see FIG. 1 and FIG. 2 etc.) provided in the cabinet 12 of the heat exchanging ventilator 10 has an air duct 206 via an SA duct joint 84 (see FIG. 2). Is connected. Each of the four air supply ducts 206 extends to an air supply grill 208 installed on the ceiling surface of the rooms R <b> 1 to R <b> 3, and a tip portion thereof is connected to the air supply grill 208.

  An intake duct 202 is connected to an intake port 52 (see FIG. 1) of the heat exchange type ventilator 10 via an OA duct joint 80 (see FIG. 2). The intake duct 202 is connected to an intake grill (not shown) installed on an outdoor wall surface. An exhaust duct 204 is connected to the exhaust port 54 (see FIG. 4) of the heat exchange type ventilator 10 via an EA duct joint 82 (see FIG. 2). The exhaust duct 204 is connected to an exhaust grill (not shown) installed on the outdoor wall surface.

  A sub suction duct 209 is connected to the sub suction duct joint 86 (see FIG. 5) of the heat exchange type ventilator 10, and the sub suction duct 209 is connected to a sub suction grill 210 installed on the ceiling surface of the room R3.

  With this configuration, outdoor outdoor air OA is taken into the heat exchange type ventilator 10 via the intake duct 202, and the air SA heat-exchanged by the heat exchange element 62 (see FIG. 1) passes through the air supply duct 206. It passes and is supplied to each room R1, R2, R3.

  On the other hand, the air RA and the like in the room R3 and the corridor R4 are sucked into the heat exchange type ventilator 10 through the auxiliary suction duct 209 and the suction port 58 of the heat exchange type ventilator 10. The sucked air RA is heat-exchanged by the heat exchange element 62 (see FIG. 1), and the heat-exchanged air EA is discharged to the outside through the exhaust duct 204.

  It should be noted that the technical scope of the present invention is not limited to the above-described embodiments, and includes those in which various modifications are made to the above-described embodiments without departing from the spirit of the present invention.

  For example, in the above-described example, the opening diameter W1 of the supply opening 78 and the opening diameter W2 of the exhaust opening 98 are adjusted as means for adjusting the air volume of the supply air path OA-SA and the exhaust air path RA-EA. However, in addition to this adjusting means, the air volume of the supply air path OA-SA and the exhaust air path RA-EA can be adjusted by making the outer dimensions of the supply fan 32 and the exhaust fan 34 different. In this example, for example, the outer shape of the exhaust fan 34 is made smaller than the outer shape of the air supply fan 32, and the opening diameter W2 of the exhaust opening 98 is made smaller.

  The present invention is suitably applied to a ventilator that is installed in a general house and ventilates and air-conditions a plurality of rooms.

It is sectional drawing which shows the structure of the heat exchange type | mold ventilation apparatus which concerns on one Embodiment of this invention. It is a figure which shows the structure of the lower surface of a heat exchange type | mold ventilation apparatus. It is a figure which shows the structure of the side surface of a heat exchange type | mold ventilation apparatus (the 1). It is a figure which shows the structure of the side surface of a heat exchange type | mold ventilation apparatus (the 2). It is a figure which shows the structure of the side surface of a heat exchange type | mold ventilation apparatus (the 3). It is a figure which shows the structure of a fan installation chamber. It is a figure which shows the structure of an air supply fan case. It is a figure which shows the structure of an exhaust fan case. It is a perspective view which shows the structure of a motor case. It is a figure which shows the structure of the side surface of a motor case. It is a figure which shows the structure of the upper surface of a motor case. It is a figure which shows the structure of the lower surface of a motor case. It is sectional drawing which shows the structure of a motor case. It is a figure which shows the example of attachment operation | movement of a motor case. It is a figure which shows the state which attached the motor case to the partition member. It is a figure which shows the structure of an air supply fan. It is a figure which shows the structure of an external air cleaning filter. It is a figure which shows the state which attached the external air cleaning filter to the cabinet. It is an exploded view which shows the structure of the lower surface opening part side of a heat exchange type | mold ventilation apparatus. It is a figure which shows the structure of a front panel (the 1). It is a figure which shows the structure of a front panel (the 2). It is a figure which shows the structure by the side of the lower surface opening part of a heat exchange type | mold ventilation apparatus. It is a figure which shows the state which attached the OA male member to the lower surface of a heat exchange type | mold ventilation apparatus. It is a figure which shows the state which attached the OA sheet metal to the lower surface of the heat exchange type | mold ventilation apparatus. It is a figure which shows the example of attachment when a heat exchange type | mold ventilation apparatus is attached to a building.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Heat exchange type ventilator, 12 ... Cabinet, 16 ... OA sheet metal, 16b ... Air volume adjustment part, 32 ... Air supply fan, 34 ... Exhaust fan, 40 ... -Motor, 52 ... intake port, 54 ... exhaust port, 58 ... suction port, 62 ... heat exchange element, 64 ... air supply port, 70 ... air supply fan case, 78 ... Air supply opening, 90 ... Exhaust fan case, 98 ... Exhaust opening, 114 ... Motor case, 120 ... Mounting part, 120a ... Opposing surface, 140 ... Outside air cleaning filter, 142 ... frame part, 200 ... building

Claims (1)

A supply air passage for taking in air outside the building from the intake port and supplying the taken air into the room from the air supply port, and for discharging indoor air drawn in from the intake port from the exhaust port to the outside of the building A ventilator body formed with an exhaust air passage,
An air supply fan that is provided inside the ventilator main body and is rotationally driven by a driving means to supply air outside the building into the room;
An exhaust fan that is provided inside the ventilator main body and is rotationally driven by a driving means to suck the indoor air through the suction port;
An air supply fan housing portion for housing the air supply fan, the air supply fan having a first opening through which the air is sucked by rotation of the air supply fan;
When the exhaust fan is driven to rotate, the air is sucked in and has a second opening having an opening diameter different from that of the first opening of the air supply fan housing portion , An exhaust fan accommodating portion for accommodating the exhaust fan ,
A partition member for partitioning the first chamber in which the air supply fan accommodating portion is provided and the second chamber in which the exhaust fan is provided;
A heat insulating member affixed to the partition member;
An attachment member for installing the driving means on the partition member;
The mounting member is
A connecting portion for attaching to the partition member;
A boss portion provided on a surface of the connecting portion facing the partition member and protruding in a direction facing the partition member;
The length in the height direction of the boss portion is configured to be shorter than the thickness of the heat insulating member,
A ventilator characterized in that, when the driving means is attached to the partition member via the heat insulating member, the facing surface of the boss portion of the attachment portion abuts on the partition member .

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