JPH0480300B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an air conditioner, and particularly to an air conditioner for heating and cooling a plurality of individual spaces.

[Prior art] Conventionally, as an air conditioner for heating and cooling multiple individual spaces,
No. 62-14519, Special Publication No. 1974-37456, Japanese Patent Publication No. 1973-
No. 91937, JP-A-57-196029, JP-A-62-37633
There is something like that disclosed in the issue.

In addition, the air conditioners disclosed in Utility Model Application No. 113409/1983 and Japanese Patent Application No. 51950/1990 by the present applicant are capable of supplying as constant a flow rate of conditioned air as possible using a simple mechanism, and also provide space between each individual space. This is to prevent conversation sounds or noise from being transmitted into each room through the ducts.

The basic configuration of such an air conditioner developed by the present applicant will be outlined based on FIG. 4.

The air conditioner 1 includes a heating and cooling air conditioner 2, a blower 3 that blows conditioned air, an intake duct 4 connected to the heating and cooling air conditioner 2, a main duct 5, and a polygonal shape (for example, It has a branching chamber 6 having a hexagonal shape or any other polygonal shape, and a plurality of branching ducts 7 extending from this branching chamber 6 to each room (not shown). An outlet 8 is attached to the branch duct 7. In addition, the code|symbol 9 shows a hanging member, wiring, etc.

As shown in FIG. 5, the branch chamber 6 has an inner chamber inspection port 10 formed at its bottom, and the interior thereof can be inspected by opening and closing a lower lid 11 for opening and closing the inspection port. A damper 12 that can be opened and closed is provided at the attachment portion of each of the branch ducts 7 to the branch chamber 6, and an electric circuit board 13 for various controls such as adjusting the opening degree of the damper 12 is mounted on the upper inner wall surface of the damper 12. It is attached to.

Therefore, this electric circuit board 13 is exposed to warm air and cold air passing through the branch chamber 6 as the air conditioner 1 operates, and is therefore affected by temperature differences due to the warm air and cold air. It is also unfavorable in terms of durability.

Furthermore, when the electric circuit board 13 breaks down or undergoes maintenance, it is necessary to open the inspection port 10 inside the chamber and put your hands inside the branch chamber 6 to carry out repair work, resulting in poor workability and time-consuming repair and inspection. There is a problem that it takes.

Further, as shown in FIG. 6, the branch chamber 6 is generally suspended from a beam 15 in the ceiling 14 of a structure such as a building, but the branch chamber 6
It is usually difficult to install the branch chamber 6 so that the in-ceiling inspection port 16 formed in the ceiling 14 located at the lower part of the chamber and the in-chamber inspection port 10 exactly overlap.

When the branch chamber 6 is installed with these relative positions shifted, as shown in FIG.
As a result, after removing the inspection port opening/closing plate 17 on the ceiling 14, it is necessary to remove the inspection port opening/closing lower cover 11 and then reach into the branch chamber 6. Another problem is that it is difficult to repair and inspect the inside of the branch chamber 6 and the electric circuit board 13. Furthermore, if the lower lid 11 for opening and closing the inspection port has a completely flat shape, it may be removed during assembly or inspection of the air conditioner 1 or the branch chamber 6, for example, by placing it on the floor and reinstalling it. It is difficult to handle when trying to pick it up, and some kind of improvement has been desired.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problems, and by considering the mounting position of the electric circuit board to be attached to the branch chamber, the inspection and repair workability of the electric circuit board can be improved. An object of the present invention is to provide an air conditioner having an electric circuit board with excellent durability.

In addition, the present invention takes into consideration the possibility of housing the electric circuit board in the branch chamber when the durability of the electric circuit board is not a big issue, and by considering the shape of the inspection opening inside the chamber, the electric circuit board can be accommodated. An object of the present invention is to provide an air conditioner that has excellent inspection workability of structural members in a branch chamber and ease of handling of a lower cover for opening and closing an inspection port.

[Means for Solving the Problems] That is, the first invention is an air conditioner that includes a heating and cooling air conditioner, a blower that blows conditioned air, and a duct that sends the conditioned air to a plurality of individual spaces, A polygonal branch chamber with a predetermined volume and a plurality of branch ducts connected is provided in the middle of the duct connected to the above-mentioned air conditioning and heating air conditioner, and an electrical connection is provided on the external bottom of the lower cover for opening and closing the inspection port provided at the bottom of the branch chamber. This is an air conditioner characterized by having a circuit board attached.

By providing a heat insulating structure by providing a heat insulating member or the like at the mounting portion of the electric circuit board, the electric circuit board can be more effectively protected from temperature changes within the branch chamber.

Further, in a second invention, the inspection port in the chamber provided on the bottom surface of the polygonal branch chamber is configured in a circular shape, and the lower cover for opening and closing the inspection port is recessed inward from the bottom surface of the branch chamber. This is an air conditioner characterized by being formed as follows.

Note that by making this chamber interior inspection opening an inscribed circle of the ceiling interior inspection opening, the combination of both inspection openings can be made more efficient, contributing to improved workability in repair and inspection.

[Function] In the air conditioner according to the first invention, the electric circuit board is attached not to the inside of the branch chamber but to the external bottom surface of the branch chamber.
After removing the inspection door opening/closing plate on the ceiling, you can inspect the inside of the ceiling without removing the inspection door opening/closing lower cover of the branch chamber like in the past, and without having to worry about the narrow space inside the branch chamber. It is possible to repair or inspect electrical circuit boards directly from the mouth.

Furthermore, since the electric circuit board is located outside the branch chamber, durability can be maintained without being affected by temperature differences due to warm air and cold air.

In the air conditioner according to the second invention, by forming the inspection opening in the chamber in a circular shape, even if there is a slight positional deviation between the inspection opening in the ceiling and the inspection opening in the ceiling, deterioration in workability due to this positional deviation can be minimized. This also solves the problem of difficulty in accessing maintenance and inspection areas.

In particular, if the inspection port inside the chamber is the inscribed circle of the inspection port in the ceiling, it is relatively easy to create a space for reaching into the branch chamber from the inspection port in the ceiling through the inspection port in the chamber, regardless of the orientation of the branch chamber. can be formed into

Furthermore, since the lower cover for opening and closing the inspection port is formed so as to recess inward from the bottom surface of the branch chamber, the lower cover for opening and closing the inspection port can be configured with a step, so to speak. It is convenient to remove from the bottom of the device, and even when it is removed and placed on the floor, it is convenient to pick up again, improving its handling.

[Embodiment] Next, an air conditioner 20 according to an embodiment of the present invention will be described based on FIGS. 1 to 3. However, the same parts as in FIGS. 4 to 7 are given the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 shows a branch chamber 6 of an air conditioner 20.
FIG. 2 is a bottom view of the main part of the branch chamber 6, and FIG. 3 is a sectional view taken along the line -- in FIG. 2.

The chamber internal inspection port 21 corresponding to the chamber internal inspection port 10 formed on the bottom of the branch chamber 6 is formed into a circular opening, and the inspection port opening/closing lower cover 22 corresponding to the inspection port opening/closing lower cover 11 is also formed in the same manner. Form into a circle.

An electric circuit board mounting portion 22A is formed in the center of the lower lid 22 for opening and closing the inspection port in a rectangular shape and recessed inward from the bottom surface of the branch chamber 6. Furthermore, a flat part 22B on the same plane as the bottom surface of the branch chamber 6 is formed around this electric circuit board mounting part 22A, and a passage forming part 22C for wiring, etc. is formed by recessing from the surface of the flat part 22B.

Therefore, the electric circuit board 13 attached to the outer bottom surface of the electric circuit board attachment portion 22A is placed in the attachment space 23 formed inward (above) the bottom surface of the branch chamber 6, and this attachment space A passage 24 for wiring or the like is formed continuously from the portion 23.

Thus, the electric circuit board 13 and the wiring 25 can be placed outside the bottom surface of the branch chamber 6 in a state where they are exposed and do not protrude from the bottom surface. Note that a cover (not shown) may be attached to protect the electric circuit board 13 if necessary.

The lower lid 22 for opening and closing the inspection port is made of a heat insulating material so that the electric circuit board 13 is not affected by the temperature from inside the branch chamber 6 as much as possible.

In addition, a passage 6 for wiring, etc. is provided on the bottom surface of the branch chamber 6 in the same plane as the passage forming part 22C for wiring, etc.
Form A. In FIG. 2, reference numeral 26 indicates a bolt hole for attaching and detaching the lower cover 22 for opening and closing the inspection port.

In the air conditioner 20 configured as described above, when the inspection port opening/closing plate 17 is removed from the in-ceiling inspection port 16 of the ceiling 14, the electric circuit board 13 is located in the mounting space 23 and exposed to the outside. In this state, it is possible to directly reach the electric circuit board 13 without opening the inspection opening/closing lower cover 22 of the branch chamber 6, and repair/inspection thereof can be performed.

Furthermore, since the electric circuit board 13 itself is located outside the branch chamber 6, the air conditioner 2
Since it is less affected by the temperature or temperature difference associated with the operation of the 0, its durability can be enhanced. Further, since the lower cover for opening and closing the inspection port is made of a heat insulating material, the influence on the electric circuit board 13 can be further reduced.

In the present invention, even if the damper 12 and other components other than the electric circuit board 13 are to be repaired or inspected inside the branch chamber 6, the chamber interior inspection opening 21 formed in a circular shape can be used for inspection inside the ceiling. By arranging the branch chamber 6 so as to be inscribed in the opening 16, it is possible to use the chamber interior inspection opening 10 most effectively from the ceiling interior inspection opening 16.

Therefore, when installing the branch chamber 6, it can be installed in any direction in the rotational direction within the horizontal plane, and the installation work efficiency is improved accordingly.

Of course, it goes without saying that the branch chamber 6 can be attached to any position as long as the chamber interior inspection opening 21 is located inside the ceiling interior inspection opening 16.

[Effects of the Invention] As explained above, according to the present invention, the electric circuit board is mounted outside the bottom of the branch chamber. This can be done without opening or closing the lid. Moreover, it is also possible to improve the durability of the electric circuit board.

Furthermore, by forming the inspection port inside the chamber in a circular shape, it is possible to relatively easily create a work space for reaching inside the branch chamber for repairs and inspections, and the lower cover for opening and closing the inspection port can be attached to the bottom of the branch chamber. Since it is formed so as to be depressed inward from the top, it is possible to improve its handling properties.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a branch chamber 6 portion of an air conditioner 20 according to an embodiment of the present invention viewed from the bottom, FIG. 2 is a bottom view of the main part of the branch chamber 6, and FIG. 3 is a - Line sectional view FIG. 4 is a perspective view of the basic structure of the conventional air conditioner 1, FIG. 5 is a partially cutaway bottom perspective view of the same, FIG. 6 is a side view of the same, and FIG. It is a bottom view. 1...Air conditioner, 2...Heating and cooling air conditioner, 3
...Blower, 4...Intake duct, 5...Main duct, 6...Branch chamber, 6A...Passway for wiring, etc., 7...Branch duct, 8...Blowout port, 9...
...Hanging members and wiring, etc., 10...Inspection port inside the chamber, 11...Lower cover for opening and closing the inspection port, 12...
Damper, 13... Electric circuit board, 14... Ceiling, 15... Beam of structures such as buildings, 16... Inspection port in ceiling, 17... Inspection port opening/closing board, 20... Air conditioner, 21... ...Inspection port inside the chamber, 22...
...Lower lid for opening and closing the inspection port, 22A...Electric circuit board attachment part, 22B...Flat surface part, 22C...Passway forming part for wiring, etc., 23...Mounting space part, 24...
Passage for wiring, etc., 25... Wiring, etc., 26... Bolt hole for attaching and detaching the lower cover 22 for opening and closing the inspection port.

Claims (1)

[Scope of Claims] 1. An air conditioner comprising a heating and cooling air conditioner, a blower that blows conditioned air, and a duct that sends out the conditioned air to a plurality of individual spaces, the duct being connected to the heating and cooling air conditioner. A polygonal branching chamber having a predetermined volume and connecting a plurality of branching ducts is provided in the middle, and an electric circuit board is attached to the external bottom of the lower cover for opening and closing the inspection port provided at the bottom of the branching chamber. air conditioner. 2. An air conditioner comprising a heating and cooling air conditioner, a blower that blows conditioned air, and a duct that sends the conditioned air to a plurality of individual spaces, the duct having a predetermined volume in the middle of the duct connected to the heating and cooling air conditioner. At the same time, a polygonal branch chamber combining a plurality of branch ducts is provided, and an inspection port inside the chamber provided at the bottom of the branch chamber is configured in a circular shape, and an inspection port opening/closing bottom that engages with the inspection port inside the chamber is provided. An air conditioner characterized in that at least a portion of the lid is formed to be depressed inward from the bottom surface of the branch chamber.