JPH0141078Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a duct air-conditioning ventilation fan with a heat exchange element that recovers indoor thermal energy discharged outdoors through ventilation of such houses, etc. .

Conventional technology In recent years, as a means of ventilating a room that is being cooled or heated, a method has been developed to exhaust dirty air from inside the room to the outside, bring in fresh air from outside, and exchange heat between the indoor air and outdoor air. Air-conditioning ventilation fans have come into use that transfer the thermal energy of exhausted indoor air to outdoor air and recover it indoors.

By the way, as shown in FIGS. 3 and 4, a conventional duct air-conditioning ventilation fan has a main body 101 that incorporates a blower 102 for sucking in outside air and a blower 103 for discharging indoor air, and also has a rectangular box that allows outside air and indoor air to pass through separately. A heat exchange element 104 of the shape is incorporated into the main body 101.
A square opening 105 for removing and removing the heat exchange element 104 is formed in the bottom surface 106 of the heat exchange element 104 . In addition, 107 in the figure is a partition part, and 108 is a ceiling board.

Problems to be solved by the invention In the above configuration, the ceiling plate 1 directly below the main body 101
08, if the dimension A between the bottom surface 106 of the main body 101 and the ceiling plate 108 is greater than or equal to the height of the heat exchange element 104, the heat exchange element 104 cannot be taken out from the main body 101 and must be inspected. I had a problem that I couldn't do it.

This invention solves these conventional drawbacks, and can be used even when there is no inspection hole for the heat exchange element in the ceiling plate directly below the main unit and there is not enough space between the bottom of the main unit and the ceiling plate. The purpose is to enable inspection of heat exchange elements.

Means for Solving the Problems In order to achieve the above object, the present invention has a structure in which a heat exchange element is attached and detached from the bottom of the main body, and the heat exchange element is divided into a plurality of pieces in the height direction. .

Function In the above configuration, when taking out the heat exchange element during inspection, since the heat exchange element is divided, it can be taken out individually. This allows inspection of replacement elements.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, 1 is a main body into which a blower 2 for sucking outside air and a blower 3 for discharging indoor air are incorporated. A rectangular box-shaped heat exchange element 4 is housed in the main body 1 so as to form an angle of approximately 45° with the inner surface of the main body 1. In this heat exchange element 4, the height C between the ceiling plate 8 and the slab surface 9 in the attic space should be narrow for architectural reasons, and therefore the height of the main body 1 cannot be made very high. Therefore, the bottom surface 6 of the main body 1
The narrower the height of the ceiling board 8, the better, so it is divided into 4a and 4b in the height direction.
A rectangular opening 5 for removing and removing the heat exchange element 4 is formed in the bottom surface 6 of the main body 1. In addition, 7 in the figure is a partition between the main body 1 and four ridges on the side surface of the heat exchange element 4, and 8 is a ceiling plate.

In the above configuration, the heat exchange element 4 is taken out after the heat exchange element 4b is taken out, and then the heat exchange element 4a is taken out. If the heat exchange element 4 is slightly larger than the size, the heat exchange element 4 can be taken out and inspected.

Effects of the invention As is clear from the description of the above embodiment, the present invention divides the heat exchange element into two parts in the height direction even when an inspection hole is not provided in the ceiling panel directly below the main body. It is possible to form a cross-flow shape in the height direction as before, and the dimension between the bottom of the main body and the ceiling plate can be half of the conventional one. Therefore, it is possible to inspect the heat exchange element even in a narrow space under the ceiling than before, without having to provide an inspection hole in the ceiling plate directly below the main body.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the installation state of a duct air conditioning ventilation fan according to an embodiment of the present invention, Fig. 2 is a plan view seen from the bottom of the same body, and Fig. 3 shows the installation state of a conventional duct air conditioning ventilation fan. The side view shown in FIG. 4 is a plan view seen from the bottom of the main body. 1...Main body, 2...Blower for outside air intake, 3...
Indoor air exhaust blower, 4a, 4b...heat exchange element, 5...opening, 6...bottom surface, 8...ceiling plate.

Claims (1)

[Scope of utility model registration request] A blower for inhaling outside air, a blower for discharging indoor air, and a square box-shaped heat exchange element for passing outside air and indoor air separately are built into the main body, and the bottom of the main body has a square opening for removing and removing the heat exchange element. An air conditioning ventilation fan for a duct, in which the heat exchange element is divided into a plurality of parts in an upper and lower height direction with respect to a stacking direction.