JPH09178238A - Ventilator with heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accomplish easy and safe maintenance of a filter for preventing the clogging of a heat exchange element housed into a box body. SOLUTION: This apparatus is provided with an element housing part 6 opened downward inside a box body 4, a heat exchange element 1 for heat exchange between the air flowing into a room from the outdoor side and the air flowing out of the room from the indoor side is housed free to disengage into the element housing part 6 while a grill 8 is linked to an opening part. Either one of a slot 20 extending along the diagonal line almost from the center of each end face 1a or a protrusion 21 to be fitted into the slot 20 positioned at the center of the end face 1a is provided each on both end faces 1a of the heat exchange element 1 and on both side walls of the element housing part 6 of the box body 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator with a heat exchanger, which is provided inside a ceiling or the like and is ventilated while exchanging heat between supply air and exhaust air. The present invention relates to a ventilation device with a heat exchanger, which is convenient for maintenance such as cleaning and inspection of the exchanger.

[0002]

2. Description of the Related Art FIGS. 6 and 7 are a plan view and a front view showing a conventional general structure of a ventilation device with a heat exchanger. This ventilation device is provided with a rectangular box body 4 in which a heat exchange element 1 having a rectangular parallelepiped shape is housed in the central portion in the lengthwise direction, and an air supply fan 2 and an exhaust fan 3 are housed on both sides. .

The heat exchange element 1 is for exchanging heat between the air flowing out from the indoor side to the outdoor side and the air flowing into the room from the outdoor side, and is an element divided by a pair of side plates 5. The element storage portion 6 is arranged in the storage portion 6, the lower portion of the element storage portion 6 is opened, and the grill 8 is connected to the opening portion via the short pipe 7. The short pipe 7 is for ensuring an air passage between the box body 1 and the grill 8.

The box body 4 is arranged, for example, in the attic, and on the front surface thereof, there is an air supply port 10 from the indoor side located on the air supply fan 2 side, and the exhaust fan. Exhaust ports 11 to the outside of the room are provided on the third side. On the other hand, the grill 8 is a ceiling plate (not shown).
The air supply port 12 from the outdoor side and the exhaust port 13 to the indoor side are respectively provided in the lower part thereof (see FIG. 8).

As a result, as the air supply fan 2 rotates, the air on the outdoor side is introduced from the air supply port 10 into the box body 4, passes through the inside of the heat exchange element 1, and then the grill 8 moves. Air is supplied to the room through the air supply port 12. On the other hand, exhaust fan 3
As the air rotates, the air on the indoor side is exhausted from the exhaust port 13 of the grill 8.
Is introduced into the inside of the box body 4, passes through the inside of the heat exchange element 1, and is then exhausted to the outside through the exhaust port 11, during which the heat exchange element 1 performs heat exchange.

As shown in FIGS. 8 and 9, the filter 1 for preventing clogging is provided over almost the entire area of the two side surfaces of the heat exchange element 1 which are orthogonal to each other on the air inflow side.
4 are attached respectively. For this reason, in this type of ventilation device with a heat exchanger, it is necessary to regularly or appropriately perform maintenance such as cleaning and inspection of the filter 14, and in order to meet this request, the following configuration is generally provided. It was

That is, as shown in the figure, brackets 15 projecting inward and extending in the horizontal direction are located between the both filters 14 of the heat exchange element 1 on both front and rear walls of the element housing portion 6. At the corner and the corner opposite thereto, a mounting plate 1 horizontally protruding outward along the extension of the diagonal line.
6 are fixed to each. Then, the upper surface of the mounting plate 16 is brought into contact with the lower surface of the bracket 15, and the screw 17 is tightened from below, whereby the heat exchange element 1
Was to be detachably housed in the element housing portion 6 of the box body 4.

As a result, when performing maintenance such as cleaning and inspection of the filter 14 for preventing clogging attached to the heat exchange element 1, first the grill 8 is opened and the lower side of the heat exchange element 1 is opened. All the screws 17 fixing the heat exchange element 1 are removed, and the heat exchange element 1 is taken out from the box body 1 with the filter 14 attached. A partition plate 18 is vertically provided at the lower end of the heat exchange element 1 for separating air supply and exhaust on the indoor side.

[0009]

However, in the above-mentioned conventional example, at the time of maintenance of the filter, all the screws that fix the heat exchange element to the box body are removed, and the heat exchange element, and thus the filter, are attached to the box body. At this time, it is necessary to take care so that the heat exchange element does not drop suddenly due to its own weight at this time, and not only this workability is extremely poor, but there is also a problem with safety at present. there were.

The present invention has been made in view of the above-mentioned circumstances, and is designed to facilitate easy and safe maintenance of a filter for preventing clogging of a heat exchange element housed inside a box. It is intended to provide a ventilation device with a exchanger.

[0011]

A ventilator with a heat exchanger according to the present invention is provided with an element housing portion that opens downward inside a box, and air that flows in from the outside to the inside and out from the inside to the outside. In the ventilation device with a heat exchanger, in which a heat exchange element that exchanges heat with the air to be stored is detachably housed in the element housing portion, and a grill is connected to the opening, both end surfaces of the heat exchange element and the On both side walls of the element storage part of the box,
One of the elongated holes extending substantially diagonally from the center of each end face or one of the protrusions located at the center of the end faces and fitted into the elongated holes is provided.

[0012]

According to the present invention configured as described above, the heat exchange element is always held in the element housing portion of the box body at both end surfaces thereof through the elongated holes and the projections fitted with each other. It has been prevented from falling. Then, when performing maintenance of the filter for preventing clogging of the heat exchange element, after releasing the holding other than the holding by the elongated hole and the protrusion, the heat exchange element is rotated about 90 times through the elongated hole and the protrusion. While doing so, it can be pulled out downward by the length of the elongated hole, whereby only the filter can be removed from the heat exchange element and taken out to the outside while the heat exchange element is held in the box.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

FIG. 1 is a cross-sectional view showing one embodiment of the present invention (equivalent to FIG. 8 of the prior art), FIG. 2 is an enlarged view of the main part thereof, and FIGS. 3 to 5 are the states shown in FIG. FIG. 8 is a cross-sectional view corresponding to an operation procedure when performing maintenance of the filter for preventing clogging of the heat exchange element.

That is, in the box body 4 installed in the attic or the like,
An element storage portion 6 partitioned by a pair of side plates 5 is provided, and in this storage portion 6, a heat exchange element 1 for exchanging heat between the air flowing out from the indoor side to the outdoor side and the air flowing into the room from the outdoor side.
Is stored. A filter 14 for preventing the clogging is attached to two side surfaces of the heat exchange element 1 which are located on the air inflow side and which are orthogonal to each other.

Here, on both end faces 1a of the heat exchange element 1, a diagonal line is formed which connects one corner located between the filters 14 and substantially the center of the end face 1a to the other corner opposite thereto. An elongated hole 20 is provided along the other corner portion, which linearly extends while slightly inclining upward in the direction of the other corner. On the other hand, the side plate 5 that defines and forms the element housing portion 6, that is, the side wall of the element housing portion 6, has a hemispherical shape at a position located approximately in the center of the end face 1a when the heat exchange element 1 is housed therein. The protrusion 21 is provided so as to project.

The hemispherical projection 21 is slidably fitted into the elongated hole 20 of the heat exchange element 1 so that the heat exchange element 1 is always held by both end surfaces thereof, and this is the element housing portion. It is configured such that it can move relatively along the length direction of the slot 20 without escaping from 6. The elongated hole 20 is not limited to this embodiment, and it is needless to say that the elongated hole 20 can be appropriately changed, for example, a shape protruding upward in an arc shape, and the protrusion 21 can also be, for example, a cylindrical shape. it can.

The corner portion of the heat exchange element 1 located between the filters 14 is, similarly to the conventional example, the upper surface of the mounting plate 16 fixed thereto and the bracket 15 protruding into the element housing portion 6. After contacting the lower surface with each other, they are fixed by tightening the screw 17 from below,
The other corners are placed and held on the upper surface of the support plate 22 provided so as to project inward of the element housing portion 6.

As a result, the filter 14 located on the upper side is
So as to face downward, that is, to the right in FIG.
This rotation is not obstructed by the support plate 22 when the is rotated. Similarly, the partition plate 18 for separating the supply air and the exhaust air on the indoor side is detachably held by the heat exchange element 1 through, for example, a notch provided in the heat exchange element 1.

Next, the filter 14 for preventing the clogging is provided.
The operation when performing maintenance such as inspection and cleaning will be described with reference to FIGS. 3 to 5.

First, as shown in FIG. 3, with the grill 8 being opened and the lower part of the element housing portion 6 being opened, a partition plate 18 extending downward is provided, for example, as shown in FIG. Direction (X direction in the same figure), then move it downward (Y direction in the same figure) to remove it from the heat exchange element 1, and fix all the screws 17 fixing the heat exchanger element 1 to the box body 4. Remove.

At this time, since the heat exchange element 1 is held by the box body 1 through the elongated holes 20 and the protrusions 21 on both end faces 1a, it cannot fall from the box body 1 by its own weight. Absent.

Next, as shown in FIG. 4, while raising the heat exchange element 1 upward, the heat exchange element 1 is rotated about 90 degrees in one direction (rightward in the figure) about the protrusion 21 so as to be orthogonal to each other. The attached filter 14 faces downwards. In this embodiment, when one side surface of the heat exchange element 1 comes into contact with the tip of the support plate 22, the rotation of the heat exchange element 1 is restricted, and the elongated hole 20 is oriented in the vertical direction. Is set.

Thereafter, as shown in FIG. 5, the heat exchanging element 1 is slid along the peripheral wall of the elongated hole 20 while utilizing its own weight, so that the projection 2 is pulled out downward and the projection 21 And stop through the slot 20. In addition,
As described above, by forming the elongated hole 20 in an upwardly curved arc shape, it is possible to rotate the heat exchange element 1 and at the same time draw it out downward, and prevent the heat exchange element 1 from abruptly descending.

In this state, the heat exchange element 1 to the filter 14
The filter 14 is removed and maintenance such as cleaning and inspection is performed, whereby the filter 14 can be maintained without taking out the heat exchange element 1 itself from the box body 4. It should be noted that in the above-described embodiment, an example in which the elongated hole 20 is provided on the end surface of the heat exchange element 1 and the projection 21 is provided on the side wall (side plate 5) of the element housing portion 6 is shown. It is also possible to provide a projection at the center of the end face of the exchange element 1 and to provide a long hole into which the projection is slidably fitted on the side wall of the element housing portion.

[0026]

As described above, according to the present invention, only the filter for preventing clogging is removed from the heat exchange element without taking out the heat exchange element from the box, and maintenance such as inspection and cleaning of the filter is performed. It can be carried out. As a result, the troublesome work of removing the heat exchange element itself from the box is unnecessary, and the filter can be easily and safely maintained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a ventilation device with a heat exchanger according to an embodiment of the present invention (a cross-sectional view taken along the line AA of FIG. 7).

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a cross-sectional view showing a state in which the heat exchange element can be rotated during maintenance of the filter.

FIG. 4 is a sectional view showing a state before rotating the heat exchange element.

FIG. 5 is a sectional view showing a state after rotating the heat exchange element.

FIG. 6 is a plan view of a ventilation device with a heat exchanger.

FIG. 7 is a front view of the same.

FIG. 8 is a cross-sectional view showing a conventional example at the time of housing a heat exchange element (corresponding view taken along the line AA of FIG. 7).

FIG. 9 is a sectional view of the same during maintenance.

[Explanation of symbols]

 1 heat exchange element 1a same end surface 4 box body 5 side plate (side wall of element storage part) 6 element storage part 8 grill 14 filter 20 long hole 21 protrusion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Taku Kawanishi 4-2-1 Honfujisawa, Fujisawa City, Kanagawa Prefecture EBARA Research Institute

Claims (1)

[Claims] 1. A heat exchange element for providing heat exchange between air flowing into the room from the outdoor side and air flowing out from the indoor side to the outdoor by providing an element housing portion opening downward inside the box body. In the ventilator with a heat exchanger that is detachably housed in the unit and has a grill connected to the opening, both end surfaces of the heat exchange element and both side walls of the element housing section of the box are provided with A ventilator with a heat exchanger, characterized in that one of an elongated hole extending substantially along a diagonal line from the center or one of protrusions located at the center of the end face and fitted into the elongated hole is provided.