JPS6335316Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a ceiling-embedded air-conditioning/ventilation system installed in the attic space, which simultaneously exhausts indoor air and supplies outside air through a heat exchange element.

This type of air-conditioning/ventilation system described above generally incorporates a supply air blower and an exhaust air blower into a box-shaped main body casing, and also has a heat exchange system that performs heat exchange between the supply air flow from the supply air blower and the exhaust air flow from the exhaust blower. It has a structure in which the element is mounted inside the main casing. The heat exchange element is often of a cross-flow type having a rectangular box shape with air passages opened at four end faces. A conventional air conditioning ventilation system employing this type of heat exchange element has a heat exchange element 10 as shown in FIGS. 1, 2, and 3.
1 is placed inside the main casing 102, and the main casing 102 is placed in a diagonal position with its four end surfaces forming an angle of approximately 45° with respect to the circumferential wall of the main casing 102.
It is attached by inserting it through a rectangular opening 103 formed on the bottom surface of the holder. The four edges of the rectangular opening 103 are connected to the main body casing 10.
2, approximately corresponding to the transparent plane shape in the mounting form of the heat exchange element 101.
It forms an angle of 45 degrees, and the attitude of the heat exchange element 101 when inserted into and removed from the opening 103 is the same as the attitude of the heat exchange element 101 when it is attached to the main body casing 102. Conventional products with this structure do not have any problems with attaching or detaching the heat exchange element 101 when used alone, but when it is suspended in the ceiling space and installed behind the ceiling board 104, maintenance and maintenance of the heat exchange element 101 is difficult. Problems with removal and installation for inspection or cleaning may occur. That is, an inspection port 105 corresponding to the opening 103 of the main body casing 102 is also provided in the ceiling plate 104;
Due to variations in the mounting position of the air conditioning ventilation system, the correspondence between the opening 103 and the inspection port 105 tends to be misaligned, and unless this misalignment is absorbed by increasing the opening area of the inspection port 105, heat exchange from the inspection port 105 will occur. This makes it impossible to extract the element 101. The inspection port 105 of the ceiling plate 104 is
Since it is formed based on the diagonal dimension of the heat exchange element 101, and a margin for the diagonal dimension must be set, it becomes a special device with a large opening area.

The present invention allows determining the opening area of the inspection hole in the ceiling plate based on the vertical and horizontal dimensions of the heat exchange element in the transparent plane.Even if the opening area of the inspection hole in the ceiling plate is small, there is no problem in attaching and detaching the heat exchange element. The object of the present invention is to provide a ceiling-embedded air conditioning and ventilation system that does not cause problems.

Next, the configuration of the present invention will be specifically explained based on an embodiment shown in the drawings.

A ceiling-embedded air conditioning ventilation system as an application example of the present invention shown in the figures from FIG. A heat exchange element 2 is incorporated in each, and the blower simultaneously takes in outside air and exhausts indoor air while exchanging heat. Two completely independent ventilation passages are constructed within the main body casing 1 by incorporating a heat exchange element 2. One ventilation passage serves as a supply air blower 3 of one of the two blowers, and the other One of them is incorporated as an exhaust blower 4 in the ventilation path of the other. The heat exchange element 2 is a parallelepiped in the shape of a rectangular box, and is of a cross-flow type with openings and exits for two air passages on the four end faces on the circumferential side. The two end faces are approximately
It is removably mounted in a diagonal position forming an angle of 45 degrees, and the two short-circuited ventilation passages of the relevant part in the main body casing 1 are made independent so that they can exchange heat with each other through the air passages. . The heat exchange element 2 is attached to and removed from the main body casing 1 by inserting and removing it through a rectangular opening 7 with a cover 6 formed on the bottom surface 5 of the main body casing 1 corresponding to the part where the heat exchange element 2 is attached. . The opening 7 of the main body casing 1 differs from a normal one in that it has an anisotropy that is rotated by about 45 degrees with respect to the transparent plane shape when the heat exchange element 2 is attached. That is,
The four vertical and horizontal edges of the opening 7 are the edges of the main body casing 1.
It is almost parallel to the four vertical and horizontal edges of the bottom surface 5 of the base. Of course, the opening area of the opening 7 is slightly larger than the transparent plane area of the heat exchange element 2 because the heat exchange element 2 is inserted and removed.
Its shape is similar to the transparent plane shape of the heat exchange element 2. Here, the state in which the heat exchange element 2 is attached to the main casing 1 and the opening 7 are shown.
There is an attitude shift based on a rotation difference in the horizontal direction of about 45 degrees between the insertion and removal states. This deviation is caused by the heat exchange element 2
This is corrected by rotating the main body casing 1 in the horizontal direction. That is, the main casing 1 is configured to allow the heat exchange element 2 to rotate within a certain range, and when the heat exchange element 2 is rotated approximately 45 degrees from the state inserted into the opening 7, the bottom surface inside the main casing 1 opening 7
Each edge corner part 8 is attached to a holding part 11 formed at each end of four rotation guide plates 10 that discontinuously form a circle inscribed with four edge parts 8 on the lower surface of the heat exchange element 2 provided so as to surround the heat exchange element 2. They are designed to be held in contact. The rotation guide plate 10 smoothes the rotation of the heat exchange element 2 within the main body casing 1 and prevents displacement due to rotation, and each has a holding portion 11 at one end as shown in the figure. The heat exchange element 2 is allowed to rotate approximately 45 degrees in the direction in which the edge portions 9 move away from each holding portion 11. That is, in the air conditioning ventilation system of this example, the heat exchange element 2 is attached and detached by rotating the heat exchange element 2 within the main body casing 1 by about 45 degrees in forward and reverse directions. Therefore, although the mounting position of the heat exchange element 2 itself is the same as before, the insertion and removal of the heat exchange element 2 from the opening 7 is
Unlike before, the position is rotated approximately 45 degrees relative to the position in which it is worn. As a result, when the main body casing 1 is suspended and fixed in the attic space as shown in FIG. The inspection port 13 for putting in and taking out items 2 can be smaller than conventional ones. In other words, inspection port 1
3 is a rectangular opening with an opening area slightly larger than the opening area of the opening 7 of the main body casing 1 in the part corresponding to the opening 7 of the main body casing 1, taking into account deviations in correspondence due to variations in installation of the air conditioning ventilation system. However, variations in the mounting position of the air conditioning ventilation system occur in the front-rear direction or left-right direction, and this is not in the diagonal direction when the heat exchange element 2 is inserted into and removed from the opening 7, so variations in the mounting position occur. The margin for the width of the inspection port 13 to absorb the heat can be small because the diagonal dimension, which is larger than the vertical and horizontal dimensions, is not used as a standard, and the inspection port 13 does not have to be of a special size as in the past. This makes it possible to attach and detach the element 2.

In the figure, reference numeral 14 indicates an exhaust inlet, 15 an exhaust outlet, 16 an air intake inlet, and 17 an air intake outlet. Furthermore, the rotation guide plate 10 may have a continuous ring shape.

As is clear from the above description of the embodiments, the ceiling-embedded air conditioner ventilation system of the present invention is inserted and removed from the square opening formed on the bottom of the box-shaped main body casing, and installed in the main body casing within the main body casing. By rotating the hexahedral heat exchange element along with the rotation guide member, the hexahedral heat exchange element is mounted in a position where the four end faces where the air passages are open form an angle of approximately 45° with respect to the circumferential surface of the main casing. Therefore, there is no need to set the dimensions of the inspection hole formed in the ceiling panel during installation based on the long diagonal dimension of the heat exchange element, and it is possible to set the dimensions of the inspection hole that is shorter than the diagonal dimension. The setting can be set with a margin to absorb variations in the mounting position as a reference, and a smaller inspection hole than before allows for sufficient removal and installation of the heat exchange element for maintenance and inspection. Operation can be performed smoothly and reliably.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of a conventional ceiling-embedded air conditioning ventilation system, Figure 2 is a plan view of the bottom side of Figure 1, and Figure 3 shows the conventional example in its installed state. 4 is a front view of a ceiling-embedded air conditioning ventilation system as an application example of the present invention, and FIG.
6 is an explanatory diagram showing the relationship between the heat exchange element and the bottom of the main body casing of the ceiling-embedded air conditioner and ventilation system, and FIG. FIG. 3 is an explanatory diagram showing the relationship with a built-in air conditioning ventilation system. Note that the same reference numerals in the figures indicate the same or equivalent parts. 1... Main body casing, 2... Heat exchange element, 3
...Air supply blower, 4...Exhaust blower, 5...Bottom, 7...Opening, 10...Rotation guide plate, 11...
...Holding part, 12...Ceiling plate, 13...Inspection port.

Claims (1)

[Scope of utility model registration request] It can be inserted and removed from the square opening formed on the bottom of the box-shaped main body casing that incorporates the supply air blower and the exhaust air blower. A hexahedral heat exchange element is provided with a hexahedral heat exchange element that is rotatably attached to the circumferential surface of the main body casing in a posture such that each side forms an angle of about 45 degrees, and inside the bottom surface of the main body casing, there are four locations on the bottom surface of the heat exchange element. A continuous or discontinuous arc-shaped rotation guide member in which the ridge corner of A ceiling-embedded air-conditioning and ventilation system that includes a holding part for holding the air conditioner.