JPS5826614A - Connecting duct in air conditioner - Google Patents

Abstract

PURPOSE:To improve a blowoff effect with all the wind from a connecting duct blown off in the direction of a wind regulating vane, by setting up a neck part tightened inward behind the outer frame as well as a passage to be set apart rearward to the connecting duct of an air conditioner for automobiles, etc. CONSTITUTION:A connecting duct 10 whose tip 10a is set tight to the rear external of an outer frame 4 consists of a neck part 10b closed tight inward behind the outer frame 4, a passage 10c set apart profressively larger toward the rear and a cylinderlike passage 10b in addition. With this constitution, when wind regulation does not take place, wind nearby the inner surface of the connecting duct 10, as shown in a, the whole amount of wind from the duct 10 is blown off forward straight as it is along a wind regulating vane 1 at the outside. Next, when a wind regulating vane 2 is directed to a C direction, wind at the left is blown off intact in the C direction along the wind regulating vane 1 but at the right blown off in the c direction after it has once collided with the wind regulating vane 1; the whole amount of wind thus comes blown off in the C direction.

Description

[Detailed Description of the Invention] This relates to h), and its purpose is to improve the blowing efficiency by ensuring that most of the wind is blown out along the wind direction adjusting blade when the direction of the wind direction adjusting blade is changed. There is something to do.

As shown in Fig. 1, a conventional air conditioner has a plurality of wind direction adjusting blades l arranged in parallel at predetermined intervals, one end of which is connected integrally by a connecting rod 2 via a thin hinge lα, and each wind direction adjusting blade is The vertically central projecting shaft 1b is rotatably supported on the housing 8, and the housing 8 is placed inside the outer frame 4, and the projecting shafts 8a on both sides thereof are rotatably supported in the shaft hole 4α of the outer frame 4. Since the connecting duct 5 was fitted and fixed on the outside of the outer frame 4, the air outlet near the inner surface of the connecting duct 5 collided with the outer frame 4 and the housing 8, resulting in turbulent flow and increased ventilation resistance. As shown in Fig. 2, when the knob 6 fixed to the central wind direction adjusting blade 1 is pushed to the right to change the wind direction of each wind direction adjusting blade l to the incoming direction, the wind flows straight regardless of the change in wind direction, and the central wind direction adjusting blade 1 flows in the incoming direction along the wind direction adjustment blade 1, but the wind that should normally be directed in the incoming direction is bent in the direction of B due to the influence of the parts E and G, resulting in a reduction in blowout efficiency. there were.

In the present invention, the connecting duct is narrowed inwardly behind the outer frame to form a neck, and a ventilation passage is formed that gradually expands toward the rear from this neck. Therefore, the air from the connecting duct is transmitted to the outer frame and the housing. The blowing efficiency is improved by making the blower directly hit the wind direction adjusting blade instead of hitting the airflow.

8 to 6 show a first embodiment of the present invention, in which the wind direction adjusting blade 11 housing 8 and outer frame 4 are assembled in exactly the same manner as in the conventional device. 10 is a connection duct of the present invention with a tip 10a
is fitted and fixed to the rear outer surface of the outer frame 4, narrows inward at the back of the outer frame 4 to form a neck 10/), and a ventilation passage loc that gradually expands rearward from the neck lob, Furthermore, a cylindrical ventilation passage 10d is formed.

Next, the effect will be explained. When the wind direction is not adjusted, the wind direction adjustment blade 1 is straight as shown in Fig. 5, and the wind near the inner surface of the connecting duct 10 reaches the neck lob along the slope of the ventilation passage 10c as shown in A, and the air flows through the outer frame. 4 and housing 8
(Connected duct without hitting the wind) All the wind from 10 remains as it is\
The air is blown straight forward along the outer wind direction adjustment blade 1. Next, move knob 6 to the right and adjust the wind direction adjustment blade l to C.
When the air is directed toward the direction, the air near the inner surface of the connecting duct 10 reaches the neck lOh along the slope of the ventilation passage lOC as shown in A, and remains as it is on the left side without hitting the outer frame 4 and the housing 8.
The wind is blown out in the C direction along the wind direction adjustment blade 1, and once collides with the wind direction adjustment blade 1 on the right side, it is blown out in the C direction, and the entire wind from the connecting duct 10 is blown out in the C direction.

FIG. 7 shows a second embodiment of the present invention, in which the tip 11α of the connecting duct 11 is fitted and fixed to the rear outer surface of the outer frame 4, and is squeezed inwardly behind the outer frame 4 to form a neck portion llb. neck llb
protrudes forward and faces closely to the rear end surface of the housing 8,
A ventilation passage l that gradually expands toward the rear from the neck llb
1C, and the terminal portion is a straight pipe 11d. 1z is a cylindrical connecting duct whose tip large diameter portion 12α is connected to the straight pipe 11.
d Fitted and fixed to the outer surface. The operation is similar to that of the first embodiment.

Note that the ventilation passage 10C911C of the connecting duct 10.11 may be a straight line or a curved line as long as it can rectify the flow of wind. As described above, if the neck portion 11j is made to protrude forward as shown in FIG. 7, the dead space can be reduced and the rectification effect can be further improved. Further, if the connecting duct 11 having the neck portion 11j and the cylindrical connecting duct 12 are configured separately, there is an advantage that the connecting duct 11 can be easily manufactured.

According to the present invention, the connecting duct is narrowed inward behind the outer frame to form a neck, and a ventilation passage is formed that gradually expands toward the rear from this neck. Since the air directly hits the wind direction adjusting blade instead of hitting the wind direction adjusting blade, all of the air from the connecting duct is blown out in the direction of the wind direction adjusting blade, improving the blowing efficiency.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the conventional device when the wind direction is not adjusted, FIG. 2 is a cross-sectional view of the conventional device when the wind direction is not adjusted, FIG. 8 is a perspective view of the first embodiment of the present invention when the wind direction is not adjusted, and FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 8, FIG. 5 is a cross-sectional view taken along line B-B in FIG. 8, FIG. 6 is a cross-sectional view of the first embodiment of the present invention during wind direction adjustment, and FIG. FIG. 7 is a cross-sectional view of a second embodiment of the invention when wind direction is not adjusted; l... Wind direction adjustment blade, 8... Housing, 4...
Outer frame, 10.11... Connection duct, lOb, 11b.
...Neck, 1OC9llC...Ventilation passage. Patent applicant: Nippon Plast Co., Ltd. Agent Sadao Ito Figure 1 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] In an air conditioner consisting of a housing in which a plurality of wind direction adjusting blades are attached so that they can be rotated simultaneously in a predetermined direction, an outer frame that pivotally supports the housing, and a connecting duct attached to the rear of the outer frame, A connection duct for an air conditioner, which has a neck narrowed inwardly behind an outer frame and a ventilation passage that gradually expands toward the rear from the neck.