JPH02298745A - Ceiling-type heat-exchanging and ventilating equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a flat box-shaped ceiling-mounted heat exchange ventilation device that is installed along a ceiling surface.

[Prior Art] The above-mentioned conventional ventilation system of this kind is, for example,
The configuration is as disclosed in Japanese Patent No. 2125. That is, the rear interior is divided into an upper exhaust passage and a lower intake passage, and the rear part of the outer casing has an indoor air discharge port communicating with the exhaust passage and an outside air intake port communicating with the intake passage. Functional parts such as heat exchange elements and blowers are assembled inside. At the front of the outer casing, an outside air outlet for blowing out outside air to the floor side and a downward indoor air intake are provided. A cross-flow type square columnar heat exchange element is assembled between the air inlet and the air suction port. In the exhaust passage, there is an exhaust blower that forms an exhaust flow from the indoor air inlet to the indoor air outlet via one air passage of the heat exchange element, and in the intake passage, there is a heat exchanger from the outside air inlet to the heat exchange element. An intake blower for forming an intake air flow that reaches the outside air outlet through the other air passage is incorporated in each. Air filters are attached to the air inflow sides of the heat exchange elements, respectively. A cover is attached to the outer casing so as to cover the opening, and this cover constitutes a part of the outer casing and performs functions such as securing an air passage. In addition, the hanging metal fittings for hanging the whole thing along the ceiling are tightened and fixed to the outer casing in an exposed state. The indoor air discharge port and the outdoor air suction port of the outer casing are connected to the outside through elastic bellows ducts I. This bellows duct has a configuration in which metal flange members are fixed to both ends of an expandable base portion with rivets via a metal frame, and are connected by a connecting flange portion formed by the flange members.

[Problem to be solved by the invention] In the conventional ceiling-mounted heat exchange ventilation device described above,
The configuration of the bellows duct that connects the indoor air outlet and the outdoor air inlet of the outer casing to the outdoors is complicated, and the assembly process is also troublesome and time-consuming. That is, it is necessary to insert the end of the base portion into the flange member, insert the frame from the inside of the base portion, align the prepared holes for inserting the rivets, and tighten the rivets.

The present invention has been made to solve such conventional problems, and an object of the present invention is to obtain a ceiling-mounted heat exchange ventilation device with a simple configuration of a telescopic bellows duct and an easy assembly operation.

[Means for Solving the Problems] The ceiling-mounted heat exchange ventilation device according to the present invention has a telescopic bellows that connects to the indoor air outlet and the outdoor air inlet of the outer casing of the main body and connects these separately to the outdoors. The flange connection portions at both ends of the duct are constructed by caulking a metal flange frame member having a plurality of tongues to both ends of a telescoping base using the tongues.

[Function] In the present invention, the flange connection portions at both ends of the telescopic bellows duct that connects to the indoor air outlet and the outdoor air inlet of the outer casing of the main body and connects these individually to the outdoors are connected to the flange connection portion of the flange frame member. It is constructed by caulking connection using tongue pieces to both ends of the expandable base, and does not include a rivet connection structure, so the expandable bellows duct can be assembled without the need for troublesome operations such as aligning pilot holes, reducing the overall cost. It is also possible to plan a reduction in

[Example] Figures 1 to 10 all show an example of the present invention. The ceiling-mounted heat exchange ventilation system of this example has a shield plate 4 between an exhaust passage 1 having a left air chamber, an intake passage 2 having a right air chamber, and a bypass passage 3 below these air chambers on the rear side. It has a divided flat box-shaped main body outer casing 5. An indoor air discharge port 6 communicating with the exhaust passage 1 and an outside air intake lower communicating with the intake passage 2 are provided at the rear of the main body outer casing 5. Further, in the front part of the main body outer casing 5, an outside air outlet 8 is opened facing forward, and an indoor air intake opening 9 is opened facing downward. Between the front ends of the exhaust passage 1 and intake passage 2 in the main body outer casing 5 and the outside air outlet 8 and indoor air intake 9, there is a heat exchange element 10 having a laminated structure and a cross-flow type square column shape. is removably attached with an angle of approximately 45 degrees. Inside the exhaust passage 1, there is an exhaust blower 11 that induces an air flow from the indoor air suction port 9 through one air passage of the heat exchange element 10 to the left air chamber, and forms an exhaust flow that reaches the indoor air discharge port 6. However, in the intake passage 2, there is also an intake blower 12 that induces an air flow from the outside air intake lower to the right air chamber and forms an intake air flow that passes through the other air passage of the heat exchange element 10 and reaches the outside air outlet 8. They are installed in symmetrical positions shifted from front to back. The bypass passage 3 formed in the lowermost layer of the main body outer casing 5 has an indoor air intake port 9 at its front portion.
When the switching damper 13 is opened, the rear part communicates with the suction side of the exhaust blower 11 of the left air chamber provided in the exhaust passage 1.

The switching damper 13 is normally closed, and no air flows into the bypass passage 3 in this state. Front end portion 1 of shielding plate 4 that shields bypass passage 3 and intake passage 2
4 is configured to be rotatable by a hinge, and is normally in a generally horizontal state to support the lower edge of the heat exchange element 10.
In addition, the lower ends of the air filters 15 each attached to the air inflow side of the heat exchange element 10 are held.

The lower ridge corner of the heat exchange element 10 is the indoor air intake port 9.
The above-mentioned shielding plate 4 is located in the opening plane of the indoor air intake port 9.
A rotatable front end portion 14 is presented. That is, the heat exchange element 10 has indoor air suction ports 9 on its air inflow side.
It is assembled across the indoor air intake port 9 so as to face the indoor air intake port 9.

The indoor air intake port 9 is provided with a removable intake grille 16 having a plurality of protrusions on the front edge side and a plurality of protrusions having a jaw-like joint on the rear edge side. A guide grill 17 is attached to the outside air outlet 8 to direct the blown outside air toward the ceiling surface. In addition, the reference numeral 18 in the figure is a partition plate having a ventilation hole provided vertically at the front end of the exhaust passage 1, and the ventilation hole is provided with a damper 20 that can be opened and closed and connected to the switching damper 13 by a connecting joint fitting. It is being

A lower decorative cover 21 and an upper decorative cover 22, which are divided into upper and lower parts and can be attached and removed, are attached to the left and right sides of the main body outer casing 5 in symmetrical positions, and a bypass passage 3 is provided on the rear side of the lower surface of the main body outer casing 5. A decorative cover 23 forming a frame is removably attached.

In addition to the above, the decorative cover includes an intake grille 16 and a guide grille 17, and divides the main body outer casing 5 into seven parts, forming an integrated cover that covers and hides each section. Of the decorative covers constituting this cover, the decorative cover 21 that covers the lower half of both sides of the main body outer casing 5 is formed into an open box shape on the main body outer casing 5 side, and the rear side of the decorative cover 21 covers the lower half of both sides of the main body outer casing 5. V as a retaining protrusion at three places cut and raised on the rear side edge of the housing 5
Three rectangular engagement holes 21a are formed to engage with the bent portion 5a. Further, on the open side of the front side surface of the decorative cover 21, an inward hook side 21b is formed which can be hooked onto an L-shaped hook piece 5b provided on the outer casing 5 of the main body. The engagement hole 21a is engaged with the V-bent portion 5a and the side 21b is not engaged with the hooking piece 5b, and the main body outer casing 5 is not engaged with the fixing metal fitting 21c provided inside the decorative cover 21. For tightening from the inside, it is removably installed by fastening members.

A hanging fixture 24 for suspending and fixing the main body outer casing 5 along the ceiling surface has an insertion hole 24a through which an anchor bolt or the like suspended from the ceiling is inserted, and is provided on both sides of the outer periphery of the main body outer casing 5. The screw hole 24b is tightened and fixed by a tightening member through the screw through hole 24b. Suspension fixing fittings 2
5 has a plurality of slits located near the ceiling surface on both sides of the outer periphery of the main body outer casing 5, and a suspension fixing fitting 2 is installed in the slits.
The key-shaped portion formed at the upper end of the main body outer casing 5 is hidden, and the constituent members of the main body outer casing 5 are sandwiched and tightened from the outside on both sides of the outer periphery of the main body outer casing 5 using tightening members, Furthermore, the L-shaped bent portion 24 of the hanging fixture 24
It is holding c. The suspension fixture 25 and the hanging fixture 24 are hidden by the decorative covers 22 on the upper sides of both sides, and are not exposed to the outside. In the figure, reference numeral 24d indicates that the hanging fixture 24 is attached to the main body in the above state. This is a tightening member through hole for fixing the base of the cargo box and the main body outer casing 5 with a tightening member when packaging an item that is tightened and fixed to the outer casing 5.

A square duct connection flange 26 is removably attached to the indoor air outlet 6 opened at the rear of the main body outer casing 5 and the outdoor air intake lower part with a tightening member, and an intake/exhaust box that opens outdoors and is attached to the wall surface. , and is connected to the Tux 27 by a telescopic bellows duct 28.

The telescopic bellows duct 28 guides the air flowing in and out of the indoor air outlet 6 and the outside air intake lower to the intake/exhaust box 27 without leaking, and the connection to the intake/exhaust box 27 is made by attaching and detaching it using a plurality of tightening members. The connection to the square duct connecting flange 26 is made by inserting and pressing the flange connecting part 28a at the end of the telescopic bellows duct 28 into the upper part of the square duct connecting flange 26a.
The clip 26b provided at 6 allows the clip to be attached and removed. The flange connection portions 28a at both ends of the telescoping bellows duct 28 have a plurality of tongue pieces 28 at both ends of the telescoping base.
It is constructed by caulking and connecting metal flange frame members having the shape b formed thereon with tongue pieces 28b. One locking piece 28c is formed on each side of the tongue piece 28b, and two locking pieces 28
A plurality of caulking portions each consisting of a locking piece 28c and a tongue piece 28b are formed on the flange frame member.
At b, the ends of the extensible base are crimped in such a way that they are hugged.

The ceiling-mounted heat exchange ventilation system of this example configured as described above can simultaneously exhaust indoor air to the outdoors and supply outdoor air indoors through the heat exchange element 10 on the ceiling side. It is possible to perform ventilation that suppresses fluctuations in state variables such as temperature. In addition, - when heat exchange ventilation is not required, such as in the middle of the season, or when it is desired to quickly exhaust cigarette smoke, etc., the damper 20 is closed and the switching damper 13 is opened to open the bypass passage 3. For example, the indoor air suction port 9 and the suction side of the exhaust air blower 11!11 are connected through the bypass passage 3, and exhaust can be exhausted without passing through the heat exchange element 10.

The outside air after passing through the heat exchange element 10 is blown out toward the ceiling side by the guide grill 17, which not only prevents the blown outside air from hitting the user even if ventilation is performed during heating, but also allows the outside air to be blown out from below. Even when looking into the outlet 8, the guide grille 17 acts as a blind and blocks the line of sight, so the inside of the outside air outlet 8 cannot be seen, and the design is improved.

For maintenance and inspection of the heat exchange element 10 and air filter 15, remove the intake grill 16 and open the indoor air intake port 9, and the air filter 15 on the indoor air inflow side will be exposed to the indoor air intake port 9. When the heat exchange element 10 is removed from the indoor air suction port 9, the indoor air inflow side of the heat exchange element 10 is exposed to the indoor air suction port 9. Therefore, maintenance work on the heat exchange element 10 can be performed using a suction cleaner or the like without removing the heat exchange element 10. Cleaning of the air inlet side of the other air filter 15 and heat exchange element 10 can also be done by opening the front end portion 14 of the shielding plate 4 by rotating it toward the indoor air intake port 9 side.
If the air filter 15 is removed from the indoor air suction port 9, the outside air inflow side of the heat exchange element 10 will be provided to the indoor air suction port 9. It can be carried out by operation.

The side surface of the main body outer casing 5 and the decorative cover 21 attached thereto
There is a space between the main body outer casing 5 and the electric wire terminal block 29, damper operation functional parts, electronic control line mounting box 30, etc. provided on the side surface of the main body outer casing 5, and the like are hidden by the decorative cover 21.

For these maintenance and electrical wiring work, use Cosmetic Cover 2.
If 1 is removed, this part will be exposed, so it can be easily carried out in a state where it can be visually confirmed.

[Effects of the Invention] As is clear from the above description of the embodiments, the ceiling-mounted heat exchange ventilation device of the present invention connects the indoor air outlet and the outdoor air inlet of the outer casing of the main body, and connects these separately. The flange connections at both ends of the telescopic bellows duct that communicates with the outdoors are
It is constructed by fastening the flange frame member to both ends of the expandable base using tongue pieces, and does not include a rivet connection structure, so the expandable bellows duct can be assembled without the need for troublesome operations such as lower six fittings. As a result, the configuration of the telescopic bellows duct is simplified, and the assembly work is also simple, allowing for a reduction in the overall cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of a ceiling-mounted heat exchange ventilation system as an embodiment of the present invention, FIG. 2 is a cross-sectional plan view thereof, FIG. 3 is a vertical side view thereof, and FIG. Figure 5 is an explanatory diagram showing the installation state, Figure 5 is an explanatory diagram showing details of the decorative cover, Figure 6 is an enlarged perspective view of only the main parts showing the configuration of the side surface of the main body outer casing, and Figure 7 is an illustration of the rear part of the main body outer casing. Figures 8 and 9 are an exploded perspective view showing the configuration, respectively. Figures 8 and 9 are a perspective view and side view showing how the ceiling-mounted heat exchange ventilation system is installed, respectively. Figure 10 is an explanatory diagram showing the configuration of the telescopic bellows duct. . In the figure, 1 is an exhaust passage, 2 is an intake passage, 3 is a bypass passage, 5 is a main body outer casing, 6 is an indoor air outlet, 7 is an outside air intake port, 8 is an outside air outlet, 9 is an indoor air intake port, 10 is a heat exchange element, 11
is an exhaust blower, 12 is an intake blower, 21.22.2
3 is a decorative cover, 28 is a telescopic bellows duct, 5a is a V-bent portion, 21a is an engagement hole, 5b is a hanging piece, 21b is a hook on a side, 21C is a fixing metal fitting, 28a is a flange connection portion, 28b
is a tongue piece, and 28c is a locking piece. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Oiwa (and 2 others) Figure 6 Figure 7 Figure 8 Figure 2

Claims (1)

[Claims] The interior of the rear side is divided by a shielding plate into an exhaust passage having an air tuft and an intake passage having an air tuft, and the rear part has an indoor air discharge port communicating with the exhaust passage and an outside air intake port communicating with the intake passage. A flat box-shaped main body outer casing that is installed along the ceiling surface and has an outside air outlet at the front and an indoor air intake at the lower front; and a plurality of decorative covers forming an outer shell of the indoor air inlet portion, approximately 45 mm between the front end of the exhaust passage and the intake passage in the main body outer casing, and the outside air outlet and the indoor air inlet.
A cross-flow type rectangular prism-shaped heat exchange element with a laminated structure installed at an inclination of 12°, and a heat exchange element incorporated in the exhaust passage of the outer casing of the main body, and one air passage of the heat exchange element from the indoor air intake port. an exhaust blower that forms an exhaust flow that reaches the indoor air outlet through the air outlet, and an intake air flow that is incorporated in the intake passage of the outer casing of the main body and that leads from the outside air intake opening to the outside air outlet via the other air passage of the heat exchange element. and a telescoping bellows duct having flange connections at both ends for guiding the indoor air discharge port and the outside air intake port of the main body outer casing to the outside, respectively, the telescoping bellows duct having flange connections at both ends of the telescoping bellows duct. The department is
1. A ceiling-mounted heat exchange ventilation device characterized in that a metal flange frame member having a plurality of tongues is caulked to both ends of a telescoping base by the tongues.