JP2013204925A - Heat exchanging ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat exchanging ventilation device that enables a control circuit to be led into a body whatever state an external power supply wire is in, and also enables the led-in control circuit to be securely repaired from inside the main body.SOLUTION: A heat exchanging ventilation device includes: a body casing 1 in which an air supply channel and an exhaust channel are formed inside; a first maintenance opening 1 a formed in a side face of the body casing; a second maintenance opening forming in a bottom surface of the body casing; a first base 15 provided nearby the first maintenance opening; a control circuit 14 provided detachably to the first base on the side of the second maintenance opening, and also provided facing the first maintenance opening; a power supply terminal base 10 to which an external power supply wire 12 led in from outside can be connected and which is fixed to a surface of the first base on the side of the first maintenance opening; and a connection wire 9 connecting the power supply terminal base and control circuit to each other.

Description

  The present invention relates to a heat exchange ventilator that performs heat exchange by simultaneous supply and exhaust through a heat exchanger.

  Conventionally, heat exchange ventilation having an exhaust passage provided with a blower for forming an exhaust flow for exhausting indoor air to the outside and an air supply passage provided with a blower for forming an air supply air for supplying outdoor air to the room The device is used. In the heat exchange ventilator, a part of the exhaust air passage and the supply air passage are respectively constituted by the passages of the heat exchanger to enable heat exchange between the exhaust air flow and the air supply air flow.

  Such a heat exchange ventilator is provided with a control circuit. A power supply wiring is connected to the control circuit, and operation control of the heat exchange ventilator is performed. The control circuit is provided inside the circuit cover that can be removed from the outside of the main body. Maintenance work of the control circuit such as circuit replacement can be performed from the outside of the main body by removing the circuit cover.

  On the other hand, for example, Patent Document 1 discloses a structure in which a control circuit box that protrudes to the outside of the main body is provided with a space that can be pulled into the main body so that the control circuit can be maintained from the inside of the main body.

JP-A-11-248190

  However, according to the above-described conventional technique, there is a problem that it is difficult to draw the control circuit into the main body when there is not enough room in the length of the external power supply wiring to which the control circuit is connected. Even when the control circuit is pulled into the main body, it is necessary to push in the external power supply wiring at the same time when returning the control circuit to the original position. At this time, there is a problem that it is difficult to confirm the state of the external power supply wiring such as how the external power supply wiring is pushed in from the inside of the main body.

  The present invention has been made in view of the above, and the control circuit can be drawn into the main body regardless of the state of the external power supply wiring, and the pulled-in control circuit can be restored more reliably from the inside of the main body. The purpose is to obtain a heat exchanging ventilator.

  In order to solve the above-mentioned problems and achieve the object, the present invention includes an air supply air passage that sucks outdoor air from an outdoor air inlet and blows outdoor air from an indoor outlet through an air supply passage of a heat exchanger. An exhaust air passage that sucks room air from the indoor air inlet and blows out the indoor air from the outdoor air outlet through the exhaust passage of the heat exchanger, and is provided in the main body casing formed inside and the air supply air passage The air supply blower, the exhaust blower provided in the exhaust air passage, the first maintenance opening formed on the first surface of the main casing, and the second formed on the second surface of the main casing. A maintenance opening, a first base provided in the vicinity of the first maintenance opening, and a detachable provision on the second maintenance opening side with respect to the first base, and toward the first maintenance opening side Provided A power supply terminal block fixed to a surface on the first maintenance opening side of the first base, and a power supply. And a connection wiring for connecting the terminal block and the control circuit.

  According to the present invention, since the control circuit can be moved without moving the power supply terminal block provided on the first base, the control circuit can be moved without affecting the state of the external power supply wiring. it can. In addition, by providing an extra length for the connection wiring connecting the power supply terminal block and the control circuit, the control circuit can be moved to a desired position while the external power supply wiring and the control circuit are connected via the power supply terminal block. For example, the maintenance can be performed by moving to the second maintenance opening. In addition, the control circuit can be moved without being affected by the state of the external power supply wiring, which tends to vary in the construction state, depending on the worker and work environment at the time of installation of the heat exchanging ventilator, thereby improving maintainability. be able to.

1 is a perspective view of a heat exchange ventilator according to a first embodiment of the present invention as viewed from below. Drawing 2 is a mimetic diagram for explaining the composition of the passage of a heat exchange ventilator. FIG. 3 is an exploded perspective view of the heat exchange ventilator. FIG. 4 is a perspective view of the heat exchange ventilator as viewed from below, and shows a state in which the circuit cover is removed. FIG. 5 is a partially enlarged view in which the circuit opening portion is enlarged, and is a view seen through the inside of the main body casing. FIG. 6 is a perspective view of the power terminal block base. FIG. 7 is a perspective view showing a state in which the control circuit base is removed from the power terminal block base. FIG. 8 is an arrow view along the arrow A shown in FIG. FIG. 9 is a perspective view of the power supply terminal base, showing a state in which the control circuit 14 is removed from the control circuit base. FIG. 10 is a perspective view of the heat exchange ventilator with the air channel partition plate removed as viewed from below.

  Below, the heat exchange ventilation apparatus concerning embodiment of this invention is demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
1 is a perspective view of a heat exchange ventilator according to a first embodiment of the present invention as viewed from below.
Drawing 2 is a mimetic diagram for explaining the composition of the passage of a heat exchange ventilator. FIG. 3 is an exploded perspective view of the heat exchange ventilator. FIG. 4 is a perspective view of the heat exchange ventilator as viewed from below, and shows a state in which the circuit cover is removed.

  The heat exchange ventilator 100 includes a main body casing 1 that constitutes an outer shell thereof. The main body casing 1 is formed with an outdoor air inlet 40, an indoor air outlet 42, an indoor air inlet 43, and an outdoor air outlet 45. In the following description, the side on which the indoor air outlet 42 is formed is the front side of the main casing 1, the side on which the indoor air inlet 43 is formed is the bottom side, and the opposite side of the bottom side is the top side. .

  As shown in FIG. 2, the air supply air passage 21 that connects the outdoor-side suction port 40 and the indoor-side air outlet 42, and the indoor-side air inlet 43 and the outdoor-side air outlet 45 are communicated inside the main body casing 1. An exhaust air passage 22 is formed.

  A heat exchanger 7 is provided at a portion where the supply air passage 21 and the exhaust air passage 22 intersect. An air supply passage 41 formed in the heat exchanger 7 constitutes a part of the air supply air passage 21. Further, the exhaust passage 44 formed in the heat exchanger 7 constitutes a part of the exhaust air passage 22.

  A supply air blower 30 is provided in the supply air passage 21. The air supply blower 30 forms an air supply air flow from the outdoor air inlet 40 toward the indoor air outlet 42 in the air supply air passage 21. Outdoor air is sucked in from the outdoor air inlet 40 and blown out from the indoor air outlet 42 by the air flow formed by the air supply blower 30.

  An exhaust blower 31 is provided in the exhaust air passage 22. The exhaust blower 31 forms an exhaust flow in the exhaust air passage 22 from the indoor side inlet 43 toward the outdoor outlet 45. Due to the exhaust flow formed by the exhaust blower 31, the room air is sucked from the indoor side suction port 43 and blown out from the outdoor side air outlet 45.

  As shown in FIG. 1, a maintenance panel 4 in which an indoor suction port 43 is formed is detachably provided on the bottom surface of the main casing 1. As shown in FIG. 3, the heat exchanger 7 can be taken in and out by removing the maintenance panel 4 from the main casing 1. The opening of the main casing 1 to which the maintenance panel 4 is attached serves as a maintenance opening (second maintenance opening) 1b for performing maintenance of the heat exchange ventilator 100 from the inside of the main casing 1. 3 and 4, illustration of the front side of the main casing 1 is omitted.

  The main body casing 1 is partitioned by a part of the main body casing 1, a power terminal block base (first base) 15, and an air passage partition plate 6, and is partitioned from an air supply air passage 21 and an exhaust air passage 22. A control circuit housing portion 25 is formed.

  A circuit opening (first maintenance opening) 1 a is formed on the front surface side which is the side surface (first surface) of the main body casing 1 and in contact with the control circuit housing portion 25. The circuit opening 1 a can be closed with a circuit cover 2. The maintenance opening 1b described above is formed on the bottom surface (second surface) of the main casing 1 and not in contact with the control circuit housing portion 25. If the surface on which the circuit opening 1a is formed is different from the surface on which the maintenance opening 1b is formed, the surface on which the circuit opening 1a is formed and the surface on which the maintenance opening 1b is formed are heated. What is necessary is just to select suitably according to the installation attitude | position planned by the exchange ventilation apparatus 100. FIG.

  FIG. 5 is a partially enlarged view in which the circuit opening 1 a portion is enlarged, and is a view seen through the inside of the main body casing 1. FIG. 6 is a perspective view of the power supply terminal base 15. FIG. 7 is a perspective view showing a state in which the control circuit base (second base) 5 is removed from the power terminal base 15. FIG. 8 is an arrow view along the arrow A shown in FIG. FIG. 9 is a perspective view of the power supply terminal base 15 and shows a state in which the control circuit 14 is removed from the control circuit base.

  As shown in FIG. 5, the power supply terminal base 15 is fixed inside the main body casing 1 in the vicinity of the circuit opening 1a so as to face the circuit opening 1a. An opening 15 a is formed in the power supply terminal base 15. As shown in FIGS. 6 to 8, the control circuit base is fixed to the opening 15 a of the power supply terminal base 15 by the fixing screws 16 and 17 from the opposite side of the circuit opening 1 a (outside of the control circuit housing portion 25). Is done.

  The power supply terminal block base 15 is provided with a power supply terminal block 10 for connecting the external power supply wiring 12. The power terminal block 10 is provided on the circuit opening 1a side (inside the control circuit housing portion 25). External power supply wiring 12 is drawn into the main body casing 1 from the power cord hole 13 formed on the top side of the main casing 1 and connected to the power terminal block 10. The external power supply wiring 12 can be connected from the outside of the main casing 1 through the circuit opening 1a. The external power supply wiring 12 is fixed by a cord clip 11 provided on the power supply terminal base 15. The external power supply wiring 12 is connected to the power supply terminal block 10 on site when the heat exchange ventilator 100 is installed.

  As shown in FIG. 9, the control circuit base 5 is provided with a control circuit 14. The control circuit 14 is fixed by a fixing screw 18 at a position on the circuit opening 1a (see also FIG. 5) side of the control circuit base 5. That is, the control circuit 14 can be attached to and detached from the control circuit base 5 from the circuit opening 1 a side. The control circuit 14 is a circuit that performs operation control of the heat exchange ventilator 100.

  The control circuit 14 and the power supply terminal block 10 are connected in advance by a connection cord (connection wiring) 9. The connection cord 9 has such a length that a certain amount of extra length is provided in a state where the control circuit 14 and the power supply terminal block 10 are connected.

  Returning to FIG. 3, the airway partition plates 6 and 8 are provided in the main body casing 1 in a space in which the heat exchanger 7 is accommodated. As shown in FIG. 10, by removing the heat exchanger 7, the airway partition plates 6 and 8 can be removed and taken out from the maintenance casing 1 b to the outside of the main casing 1.

  By removing the air passage partition plates 6 and 8, maintenance of the air supply blower 30 and the exhaust blower 31 can be performed from the inside of the main body casing 1. Further, by removing the air passage partition plate 6, it is possible to access the power terminal base 15 from the inside of the main body casing 1.

  As described above, since the power terminal block 10 is fixed to the power terminal block base 15 and the connection cord 9 is provided with a slack, the fixing screws 16 and 17 are loosened with the air passage partition plate 6 removed. If the control circuit base 5 is removed from the power supply terminal base 15, the control circuit base 5 can be pulled out to a position where maintenance of the control circuit 14 can be performed.

  The external power supply wiring 12 constructed at the time of installation of the heat exchanging ventilator 100 tends to vary in length and construction state depending on the worker and the working environment. On the other hand, since the connection cord 9 is provided in advance in the heat exchanging ventilator 100, the length of each product is less likely to vary. Therefore, when the heat exchanging ventilator 100 is manufactured, if the length of the connection cord 9 is set to a length sufficient to pull out the control circuit base 5 to the maintenance opening 1b, the state of the external power supply wiring 12 is achieved. It becomes easy to ensure the maintainability of the control circuit 14 without being affected. Thus, since the length of the connection cord 9 can be set at the time of manufacturing the heat exchanging ventilator 100, it is possible to improve the maintainability by suppressing variations in ease of maintenance for each product. The length of the connection cord 9 may be set so that the control circuit base 5 can be pulled out of the main casing 1 through the maintenance opening 1b.

  Further, when the control circuit base 5 is attached to the power supply terminal base 15 again, it is necessary to push the connection cord 9 into the circuit opening 1a side. Also in this case, the connection cord 9 that has been pushed in is set in advance to an appropriate length that is unlikely to get tangled with other components, so that the state of the connection cord 9 that is difficult to see from the maintenance opening 1b is not minded. You will be able to perform maintenance.

  As described above, the control circuit can be maintained without being affected by the length of the external power supply wiring 12 connected to the power supply terminal block 10, so that it is not necessary to give the external power supply wiring 12 an extra length. Therefore, it is possible to simplify the connection work with the external power source. Further, the influence of the drawer of the control circuit base 5 on the state of the external power supply wiring 12 can be suppressed.

  Since the power terminal block 10 is provided on the circuit opening 1a side, the external power wiring 12 is connected to the power terminal block 10 when the heat exchange ventilator 100 is installed, that is, before the ceiling is attached. Work can be performed through the circuit opening 1a, and workability can be improved.

  Further, as shown in FIG. 9, the control circuit 14 can be attached to and detached from the control circuit base 5 from the circuit opening 1a side, so that the circuit opening 1a is formed with a size that allows the control circuit 14 to pass therethrough. For example, maintenance can be performed from the outside of the main casing 1 after the control circuit 14 is pulled out through the circuit opening 1a.

  As described above, the heat exchange ventilator according to the present invention is useful for a heat exchange ventilator including a control circuit.

1 Body casing 1a Circuit opening (first maintenance opening)
1b Maintenance opening (second maintenance opening)
2 Circuit cover 4 Maintenance panel 5 Control circuit base (second base)
6, 8 Airway divider 7 Heat exchanger 9 Connection cord (connection wiring)
DESCRIPTION OF SYMBOLS 10 Power supply terminal block 11 Code clip 12 External power supply wiring 13 Power supply cord hole 14 Control circuit 15 Power supply terminal block base (1st base)
15a Opening 16, 17, 18 Fixing screw 21 Supply air passage 22 Exhaust air passage 25 Control circuit housing part 30 Supply air blower 31 Exhaust air blower 40 Outdoor outside suction port 41 Supply air passage 42 Indoor side outlet 43 Indoor side suction port 44 Exhaust air Passage 45 Outdoor air outlet 100 Heat exchange ventilator A Arrow

Claims (6)

An intake air passage that sucks outdoor air from the outdoor suction port and blows outdoor air from the indoor outlet through the air supply passage of the heat exchanger, and sucks indoor air from the indoor suction port, and an exhaust passage of the heat exchanger An exhaust air passage for blowing out indoor air from the outdoor air outlet, and a main body casing formed inside,
An air supply fan provided in the air supply path;
An exhaust blower provided in the exhaust air passage;
A first maintenance opening formed in the first surface of the body casing;
A second maintenance opening formed on a second surface different from the first surface of the main body casing;
A first base provided in the vicinity of the first maintenance opening in the main body casing;
A control circuit that is detachably provided on the second maintenance opening side with respect to the first base, and that is provided toward the first maintenance opening side;
An external power supply wire drawn from the outside of the main body casing is connectable, and a power supply terminal block fixed to a surface on the first maintenance opening side of the first base,
A heat exchange ventilator comprising a connection wiring for connecting the power supply terminal block and the control circuit.   The heat exchange ventilator according to claim 1, wherein the connection wiring is set to a length that allows the control circuit removed from the first base to move to the second maintenance opening. A second base detachably fixed to the second maintenance opening side with respect to the first base;
The heat exchange ventilator according to claim 1, wherein the control circuit is detachably fixed to the first maintenance opening side with respect to the second base. Inside the main body casing, a part of the main body casing and the first base are partitioned to form a control circuit housing portion partitioned from the air supply air passage and the exhaust air passage,
The first maintenance opening is formed on a surface in contact with the control circuit housing portion among the side surfaces of the main casing.
4. The heat exchange ventilator according to claim 1, wherein the second maintenance opening is formed on a surface of the bottom surface of the main body casing that does not contact the control circuit housing portion. .   The heat exchange ventilation according to any one of claims 1 to 4, wherein the first maintenance opening is formed with a size that allows the control circuit to be taken out of the main body casing through the maintenance opening. apparatus. The first surface is a side surface of the main body casing;
The heat exchange ventilator according to any one of claims 1 to 5, wherein the second surface is a bottom surface of the main body casing.

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