JPH0245708Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present application relates to a new invention regarding an air conditioning duct line arranged inside a ceiling or the like.

[Conventional technology] Traditionally, air conditioning duct pipes have been installed in the ceilings of high-rise buildings such as offices and condominiums in all directions, supplying cold or warm air from desired openings to improve the living environment. Maintained.

Therefore, in the pipe network that starts from the air conditioner and ends at the outlet at the end, branch pipes are installed to connect at least three pipes at various locations, and the airflow is received from one side and divided into the other two. , it receives air currents from two sides and merges into the other side.

Whether dividing or merging, flow distribution is extremely important for overall balance, and if it is not appropriate, it will have a negative impact on the environment inside the building.

However, the balance is always prone to collapse depending on the layout of the living area, the density of residents, the air flow in the building, the content of work, etc., so conventionally butterfly dampers 9 and 9 were installed near the outlet of the branch pipe as shown in Figure 6. was installed to adjust the flow rate distribution of the branch, making the air volume after the branch variable. Dampers were also used for merging.

[Problems to be solved by the invention] Adjustment using the damper requires opening and closing operations for each of the pipes. For example, when one main pipeline branches into three branch pipelines, it is necessary to operate three dampers 9, 9. Moreover, it is extremely difficult to maintain an even airflow balance by operating the damper, and there is often an excess or deficiency, resulting in the problem that the air conditioning does not function properly depending on the location.

Furthermore, the airflow passing through the damper is obliquely constricted and the airflow becomes turbulent, causing so-called wind noise and slight vibrations, which can cause discomfort in the living area.

Normally, duct branch pipes are installed in extremely narrow spaces inside the ceiling, making it extremely difficult for security personnel to work there.

In order to solve the above-mentioned problems, the present invention has developed an air conditioner that can adjust the air flow rate with a single touch without using multiple dampers, and also has a function to rationally and easily adjust the air flow rate at branching and merging. The purpose is to provide branch pipes.

[Means for Solving the Problems] The branch pipe for air conditioning according to the present invention includes an outer cylinder of each branch pipe connected to each pipe line, and a sleeve that is slidably fitted into the outer cylinder. The above-mentioned problem has been solved by using an inner cylinder which is fully open to the pipes, but partially opened to other pipes, and whose opening area changes as it slides.

[Function] FIG. 1A shows an example of implementing the function of the present invention.
The explanation will be based on the drawings from B to FIG.

FIG. 1A is a front sectional view of the outer cylinder of the branch pipe, and FIG. 1B is a side view. The outer cylinder has three or more openings each connected to at least three or more pipes.

Figure 2 A shows a front cross-sectional view of the inner cylinder, and B shows a side (X-X) cross-sectional view of the inner cylinder. However, it is partially open to other pipes (in this case, pipes).

FIG. 3 is a perspective view showing a state in which the inner cylinder is slidably fitted into the outer cylinder, and the hatched portion shows the open (communicating) range. The aperture range changes in the direction of the arrow.

As illustrated in the above drawings, as the inner cylinder slides within the outer cylinder, the opening range of the inner cylinder that overlaps and communicates with the opening of the outer cylinder changes, so The flow rate divided into the pipes can be easily changed, and by forming the shapes of the openings drilled in the inner cylinder in relation to each other, the flow rate distribution to each pipe can be rationally controlled. .

[Example] Fig. 1 shows the outer cylinder 1, Fig. 2 shows the inner cylinder 2, and Fig. 3 shows an embodiment in which both are fitted.
This is an air conditioning branch pipe that branches the flow to The outer cylinder is a conduit,
, respectively.

The inner cylinder 2 is a cylindrical body whose upper surface is covered with a cover plate, and has side openings 6 and upper openings 7 punched out.

The outer cylinder and the inner cylinder have a common hole in the axis of the cylinder, and the shaft of the adjustment handle 8 is inserted through the hole.

One end of the shaft is fixed to the inner cylinder, and the other end is fitted with an operating rod, so that by manually rotating the rod, the inner cylinder can be slid into and rotated within the outer cylinder.

The perspective view shown in FIG. 3 is an example in which the openings 6 and 7 of the inner cylinder are set so that the sum of the opening areas for the pipes and the pipes is always constant, and as shown in the figure, one has a 25% When one is open, the other has an aperture ratio of 75%, and the sum of both is always constant.

The shape of such an opening can be easily calculated mathematically, but for reference, Figure 4 shows the shape of the top opening 7.
Drawing examples of the side openings 6 are shown in Figures A and B.

[Effect of the invention] The branch pipe for air conditioning according to the present application achieves the above-mentioned function, so that the flow rate of the branching and merging can be quickly changed by one operation.
and can be adjusted accurately. This significantly improves workability in confined spaces. In addition, it is possible to easily follow changes in conditions in the residential area (changes in personnel density, rearrangement, etc.).

Additionally, since a damper is not used when diverting the flow, wind noise is reduced compared to conventional systems, eliminating discomfort when living in the room.

In addition, since the cross-sectional shape of the opening of the cylindrical chamber is perpendicular to the flow direction, laminar flow properties can be expected after flow separation, and micro-vibration of the pipe line due to turbulence can be avoided, unlike conventional methods.
Problems such as noise and loosening of pipes after use are greatly improved.

As an advantage specific to this embodiment, since the total ventilation area of the branching pipes is specified, the amount of air to be received can be accurately distributed, and the adjustment is easy and easy to understand.

[Brief explanation of drawings]

Figure 1 is a front sectional view A and a side view B of the outer cylinder, and
The figures are a front sectional view A and a side sectional view B of the inner cylinder, Fig. 3 is a perspective view of both fitted together, Fig. 4 is a drawing of the top opening, and Fig. 5 A and B are drawings of the side opening. example,
FIG. 6 is a front sectional view of the prior art. 1... Outer cylinder, 2... Inner cylinder, 3, 4, 5... External cylinder outlet, 6, 7... Inner cylinder opening,,,
...Pipe line.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In an air conditioning branch pipe connected to three or more pipes, an outer cylinder of each branch pipe connected to each pipe, and a pipe that is slidably fitted into the outer cylinder, 1 A branch pipe for air conditioning, characterized in that it consists of an inner cylinder that is fully open to the pipe line but partially open to other pipe lines, and whose opening area changes as it slides. . 2 Utility model registration claim 1 in which the total opening area of each partially opened pipe is always constant
Branch pipe for air conditioning as described in section.