JP3995789B2 - Heat exchange ventilator - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a heat exchange type ventilator that performs ventilation while exchanging heat between an air supply flow and an exhaust flow.
[0002]
[Prior art]
Conventionally, this kind of heat exchange ventilator is known from JP-A-8-170847.
[0003]
Hereinafter, the heat exchange ventilator will be described with reference to FIGS.
As shown in the figure, heat exchange is performed between a heat exchanger 102 that exchanges heat between outside air and room air inside a box-shaped main body frame 101, and an air supply passage 103 and an exhaust passage 104 that intersect at the heat exchanger 102. A ventilation path switching damper 107 that switches between a centrifugal air supply fan 105, an exhaust air fan 106, a passage that passes through the heat exchanger 102, and a passage that does not pass through the heat exchanger 102, which generates an aeration flow that intersects with the heat exchanger 102. The main body frame 101 is provided with an inspection port 108 in which an opening for extracting the heat exchanger 102 is formed, an inspection lid 109 for closing the inspection port 108, and an electrical component 110.
[0004]
Of the pair of corners facing the diagonal direction of the main body frame 101, the air supply fan 105 is disposed at the corner on the inspection port 108 side, and the exhaust fan 106 is disposed at the opposite corner. The air supply fan 105 and the exhaust air fan 106 are installed such that the rotation axis thereof is orthogonal to the blowing direction of the blowing air and the blowing side faces the air outlet, and the exhaust air fan 106 is installed opposite to the inspection port 108. The dampers 107 are arranged at the corners that are not connected, and the electrical parts 110 are arranged at the corners facing the diagonal direction of the dampers.
[0005]
[Problems to be solved by the invention]
In such a conventional heat exchange ventilator, since the electrical component 110 is attached to the outside air side, there is a problem that the electrical component 110 is condensed, and it is required to prevent condensation.
[0006]
This invention solves such a conventional subject, and it aims at providing the heat exchange ventilator which can prevent dew condensation of an electrical equipment part.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the heat exchange ventilator of the present invention has a box shape and has an indoor exhaust port and an indoor air supply port on one surface, and an outdoor exhaust port and an outdoor air supply port on the opposing surface. A main body frame provided with an inspection port at substantially the center of one surface near the indoor side air supply port and the outdoor side air supply port, an air supply fan provided opposite to the indoor side air supply port, and the outdoor side An exhaust fan provided facing the exhaust port, a heat exchanger detachably provided from the inspection port so as to exchange heat between the exhaust flow and the supply air flow, and a ventilation path that forms a passage that does not pass through the heat exchanger A switching damper and an electrical component provided with a circuit board for controlling the operation of the heat exchanger are provided, and the electrical component is disposed on the surface of the main body frame near the interior of the inspection port. is there.
[0008]
ADVANTAGE OF THE INVENTION According to this invention, the heat exchange ventilator which can prevent dew condensation of an electrical equipment part is obtained.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention has a box shape and has an indoor side exhaust port and an indoor side air supply port on one side, an outdoor side exhaust port and an outdoor side air supply port are provided on the opposite side, and the indoor side A main body frame provided with an inspection port at substantially the center of one surface near the air supply port and the outdoor air supply port, an air supply fan provided facing the indoor air supply port, and the indoor exhaust port An exhaust blower provided, a heat exchanger provided detachably from the inspection port so as to exchange heat between the exhaust flow and the supply air flow, and a ventilation path switching damper that forms a passage that does not pass through the heat exchanger, , and a electrical portion provided with a circuit board for controlling the operation of the ventilator, comprising the electrical equipment section heat exchange ventilator that is arranged on the surface of the inspection port side near the indoor-side air supply port of the main frame A mounting screw and a square-shaped protrusion provided on the main body frame side, And wherein is an exhaust blower which was provided disengageably through the motor fixing plate provided with potbelly-shaped hole and the square hole, the outside air outside temperature is the air supply at a low temperature heated by exhaust heat in a heat exchanger Since the outside air whose temperature has been increased is supplied into the room through the indoor air supply port, the electrical component provided in the vicinity of the indoor side is prevented from being cooled by the low temperature outside air , and the exhaust fan and the air supply When fixing the air blower with the motor fixing plate, insert the large diameter side of the darling hole of the motor fixing plate into the mounting screw provided on the main body frame side, and insert the square hole provided on the motor fixing plate on the main body frame side. After engaging the angular protrusions provided, the motor fixing plate is moved so that the small diameter side of the daruma-shaped hole of the motor fixing plate corresponds to the mounting screw, and the mounting screw is tightened to fix it. Take completely Without accidentally disconnect is only possible detachable exhaust blower or air supply fan loosening, mounting is easy, has the effect of loss of attachment screws can be prevented.
[0010]
Embodiments of the present invention will be described below with reference to FIGS.
[0011]
【Example】
Example 1
As shown in the figure, it has a box shape and has an indoor side exhaust port 1 and an outdoor side air supply port 2 on one side, an outdoor side exhaust port 3 and an outdoor side air supply port 4 provided on the opposite surface, and an indoor side air supply port. 2 and a main body frame 6 provided with an inspection port 5 at substantially the center of one surface near the outdoor air supply port 4, opposed to the indoor air supply port 2, provided with a supply air blower 7, and an outdoor exhaust port 3, an exhaust fan 8 is provided, and a heat exchanger 9 for exchanging heat between the supply air flow by the air supply fan 7 and the exhaust flow by the exhaust fan 8 is provided detachably from the inspection port 5, An airflow path switching damper 10 is provided so as to form a passage that does not pass through the exchanger 9, and an electrical component 11 provided with a circuit board (not shown) for controlling the operation of the ventilator is provided on the indoor side of the main body frame 6. It is arranged on the surface on the inspection port 5 side in the vicinity of the air port 2.
[0012]
Further, a claw 13 having elasticity is provided on one side of the inspection lid 12 provided in the inspection port 5, a hooking portion 14 is provided on the other side, and the main body frame 6 around the inspection port 5 is attached to the inspection lid 12. A square hole 15 with which the provided claw 13 is engaged and a hook hole 16 of the hook portion 14 are formed.
[0013]
In addition, the electrical component unit 11 integrally forms a box-shaped electrical component case 17 whose front surface is opened, an electrical component lid 18 that closes the opening, and an electrical component partition 19 with resin via a hinge 20.
[0014]
In addition, a square hole 22 is provided on one side of the motor fixing plate 21 that fixes the air supply fan 7 and the exhaust fan 8, and a daruma-shaped hole 23 is provided on the other side. The head has a size that can be inserted into and removed from the large-diameter portion of the square-shaped projection 24 that engages the square hole 22 provided in the fixing plate 21 and the daruma-shaped hole 23 provided in the motor fixing plate 21. A mounting screw 25 to be attached on the small diameter side of the hole 23 is provided.
[0015]
Further, a damper fixing plate 26 for fixing the ventilation path switching damper 10 is formed by cutting and raising the bottom portion 27 of the main body frame 6.
[0016]
In addition, a groove 29 serving as a passage for the lead wire 28 connecting the exhaust fan 8 and the electrical component 11 is formed in the bottom 27 of the main body frame 6.
[0017]
In the above configuration, when the ventilator is operated in the winter season, air containing heat from the room is sucked in by the exhaust blower 8 from the indoor exhaust port 1, and the heat is stored when passing through the heat exchanger 9. The exhausted air is exhausted to the outside from the outdoor exhaust port 3, while the heat stored when the outside air at a lower temperature than the outdoor air supply port 4 is sucked by the air supply fan 7 and passes through the heat exchanger 9. The air is collected into the room from the indoor air supply port 2 in a state where the temperature is raised, and simultaneous operation of supply and discharge is performed.
[0018]
Since the electrical unit 11 is provided in the vicinity of the indoor air supply port 2, it is prevented from being cooled by low-temperature outside air, and the circuit board and the like provided in the electrical unit 11 are prevented from being damaged by condensation. The Rukoto.
[0019]
The inspection port 8 to which the heat exchanger 9 can be attached and detached is provided with an inspection lid 12 having a shape for closing the inspection port 8 and integrally provided with a claw 13 and a hooking portion 14, and a square hole 15 and a hooking hole provided in the main body frame 6. Therefore, it is not necessary to prepare a separate member separately for attaching the inspection lid 12, and the number of parts can be reduced.
[0020]
Moreover, since the electrical component part 11 integrally forms the electrical component case 17 and the electrical component lid 18 with resin via the hinge 20, the number of components is reduced and it is difficult to condense.
[0021]
Further, when the exhaust fan 8 and the air supply fan 7 are fixed by the motor fixing plate 21, the large diameter portion of the daruma-shaped hole 23 of the motor fixing plate 21 is attached to the head of the mounting screw 25 provided on the main body frame 6 side. After engaging the square hole 22 provided on the motor fixing plate 21 with the angular protrusion 24 provided on the main body frame 6 side, the small diameter side of the daruma-shaped hole 23 of the motor fixing plate 21 is attached. The motor fixing plate 21 is moved so as to correspond to the screw 25, and the mounting screw 25 is fastened and fixed. Therefore, it is not necessary to completely remove the mounting screw 25, and the exhaust fan 8 or the air supply fan is simply loosened. Since 7 can be attached and detached, attachment is easy and loss of the attachment screw 25 can also be prevented.
[0022]
In addition, since the damper fixing plate 26 for fixing the ventilation path switching damper 10 is formed by cutting and raising the bottom portion 27 of the main body frame 6, the damper fixing plate 26 and the main body frame 6 can be integrated to reduce the number of parts. .
[0023]
Further, since the groove 29 through which the lead wire 28 passes is formed at the bottom of the main body frame 6, the heat exchanger 9 can be traversed, the length of the lead wire 28 can be shortened, and the material cost can be reduced. In addition, the main body frame 6 is reinforced by the grooves 29 and the strength of the main body frame 6 is increased.
[0024]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain an advantageous effect that the dew condensation on the electrical component can be prevented.
[0025]
In addition, the present invention provides an advantageous effect that the number of parts and the number of assembly steps can be reduced.
[0026]
In addition, the present invention provides an advantageous effect that the supply fan and the exhaust fan can be attached and detached without removing the screws.
[0027]
In addition, the present invention has an advantageous effect that the motor and the electrical component can be connected with a short lead wire.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an internal configuration of a heat exchange ventilator according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a mounting state of an inspection lid of the heat exchange ventilator. FIG. 4 is a perspective view showing a mounting state of a blower part of the heat exchange ventilator. FIG. 5 is a perspective view showing a configuration of a damper fixing plate of the heat exchange ventilator. FIG. 7 is a perspective view showing the internal configuration of the heat exchange ventilator after the heat exchanger is extracted. FIG. 7 is a perspective view showing the internal configuration of the conventional heat exchange ventilator. FIG. Perspective view showing the internal configuration of the device [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Indoor side exhaust port 2 Indoor side air supply port 3 Outdoor side exhaust port 4 Outdoor side air supply port 5 Inspection port 6 Main body frame 7 Blower for supply air 8 Blower for exhaust air 9 Heat exchanger 10 Damper 11 for ventilation path switching Electrical component 12 Inspection Cover 17 Electrical Case 18 Electrical Cover 20 Hinge 21 Motor Fixing Plate 26 Damper Fixing Plate 28 Lead Wire 29 Groove

Claims (5)

It has a box shape and has an indoor side exhaust port and an indoor side air supply port on one side, an outdoor side exhaust port and an outdoor side air supply port are provided on the opposite surface, and is close to the indoor side air supply port and the outdoor side air supply port. A main body frame provided with an inspection port at substantially the center of one surface, an air supply fan provided facing the indoor air supply port, an exhaust fan provided facing the outdoor exhaust port, an exhaust flow and supply A heat exchanger that is detachably provided from the inspection port so as to exchange heat between airflows, a ventilation path switching damper that forms a passage that does not pass through the heat exchanger, and a circuit board that controls the operation of the ventilator. A heat exchange ventilator provided on the surface on the inspection port side in the vicinity of the indoor air supply port of the main body frame, the mounting screw provided on the main body frame side, the angular projection is provided, listlessness said air supply blower and said exhaust blower Jo holes and the heat exchange ventilator provided disengageably through the motor fixing plate provided with a square hole.   The heat exchange ventilator according to claim 1, wherein an inspection lid provided at the inspection port is formed of resin and is detachably provided on the main body frame.   2. The heat exchange ventilator according to claim 1, wherein a groove serving as a lead wire passage is formed at the bottom of the main body frame. The heat exchange ventilator according to claim 1, wherein an electrical component case in which contents are stored and an electrical component lid provided in the electrical component case via a hinge are integrally formed. 2. The heat exchange ventilator according to claim 1, wherein a damper fixing plate for fixing the ventilation path switching damper is formed by cutting and raising the main body frame.

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