JPH0414253B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Technical Field] The present invention relates to an air outlet for an air conditioner, in which the range of the blown air can be varied.

[Prior art]

One of the important characteristics required of an air conditioner for heating and cooling living spaces is to reach a comfortable room temperature in as short a time as possible after startup. In the case of automobile cabins, it is not easy to meet these demands because they are directly exposed to severe outside temperatures and lack a heat-insulating structure.

Therefore, the inventors of the present application have previously developed a system which is primarily intended for cooling and heating automobiles, and when air conditioning is started, the flow of conditioned air is narrowed down and blown onto the occupants in spots to give a temporary feeling of warmth or freezing. After the entire vehicle interior reached the appropriate temperature, he devised a vent for air-conditioned air that diffused the air outlet area to alleviate the harsh feeling of being hit by the wind, and filed a patent application for the same in Japanese Patent Application No. 1982-218272. This application relates to an improved invention thereof.

[Purpose of the invention]

The air outlet of the air conditioner of the present invention narrows the conditioned air in spots and blows it directly onto the person when air conditioning is started, producing an emergency or strong cooling/heating effect, and at normal times it is a diffused, gentle air flow that does not cause discomfort. The purpose is to provide a means for discharging.

[Structure of the invention]

The air outlet of the air conditioner of the present invention has a double tubular structure with inner and outer layers, and by changing the amount of air passing through the inner cylinder and the gap between the inner and outer cylinders, or the ratio of the air flow velocity, The air outlet is configured to vary the reach distance and degree of dispersion of the blown air, and the inner cylinder is coaxially and rotatably inserted in the outer cylinder, and the inner cylinder has a built-in A first invention is provided with a mechanism for interlocking the rotation of the rotary damper with the inner cylinder and the rotational motion, and the damper has a double inner and outer cylinder structure and passes through the inner cylinder and the outer cylinder, respectively. The air outlet is configured to vary the reach distance and degree of dispersion of the blown air by changing the ratio of air volume, and the inner cylinder is divided into two in the cylinder axis direction, and the divided inner cylinder is aligned with the cylinder axis. It is installed so that it can be combined or separated by sliding in the direction, and one divided end of the divided inner cylinder has an expanded shape that expands outward toward the downstream side of the air flow, and the other divided end has an expanded shape toward the upstream side. It has a constricted shape that narrows inward toward the inner cylinder, and is configured to be able to change the ratio of the amount of air passing through the inner and outer cylinders by changing the gap between both ends of the two-divided inner cylinder. and a second invention.

According to a preferred embodiment of the present invention, the interlocking mechanism between the inner cylinder and the damper includes a gear that is fitted around the rotation shaft of the damper, and a gear that is arranged in the circumferential direction of the inner cylinder so as to fit into the gear. The inner cylinder is combined with a gear provided along the inner cylinder, and the intake side end of the inner cylinder has an enlarged cylinder diameter shape that widens at the end.

〔Effect of the invention〕

The air outlet of the air conditioner with the above configuration is
It has the following effects.

B By fully opening the damper for increasing/reducing air flow built into the inner cylinder of the outlet, which has a dual-tube structure inside and outside, it is possible to blow out a narrowed airflow in spots. An emergency heating and cooling effect or a long-distance effect of cooling and heating air can be obtained.

(b) By closing the inner cylinder damper, after the air-conditioned space reaches an appropriate temperature, a gentle airflow that does not cause discomfort to the body can be blown out.

C. Compared to the earlier patent application No. 58-218272 filed by the present inventors, the structure is simpler and can be produced at a lower cost.

(D) While the above prior application had a rectangular cross-sectional shape, it has a circular cross-sectional shape, so it is possible to incorporate a continuous deflection mechanism in the direction of the blowout, upward, downward, left, and right, and the distribution of the blowout air can be improved. It can be made even.

〔Example〕

Next, the present invention will be explained based on an embodiment of the air outlet of an air conditioner shown in the drawings.

First, in Figure 1, which is a perspective view of the instrument panel of an automobile illustrating how the air outlet of the present invention is installed in the vehicle interior, A is the crash pad, B is the instrument panel, C is the front window, and D is the introduction of the internal/external air switch. Box, E is heat exchange unit for air conditioning, F
is a defroster, GH is a front and foot outlet for conditioned air, respectively, and I is a front panel portion of the outlet according to the present invention.

Next, a front view and a side sectional view of the air outlet of the present invention,
In FIGS. 2 to 5, which are rear views and exploded views, the air outlet made of hard synthetic resin or the like has a spherical inner surface and is divided into two casings 1 and 5 in the axial direction. 2 and an outer cylinder 3 having a spherical outer peripheral surface similar to the inner peripheral surface of the casing and fitted into the casing; An inner cylinder 4 is coaxially inserted into the cylinder 3, and an inner cylinder 4 is attached to the inner cylinder 4,
The rotary damper 5 for increasing/decreasing the amount of ventilation inside the cylinder is the main component, and the gap between the outer cylinder 3 and the inner cylinder 4 forms the outer peripheral air outlet b, and the inner cylinder 4 forms the central air outlet a. The inner cylinder 4 is combined with the outer cylinder 3 via a thin plate-shaped spacer 6 which is installed in a cross-shaped arrangement in the gap between the inner cylinder 3 and the outer cylinder 3. In addition, the inner cylinder 4 has a front end side (air blowing side).
An outer tube 7 attached to the inner tube, which has a length of approximately half the length of the tube, has a gear 8 carved on its rear end surface, and a rotation knob 9 on its front end surface, is fitted so as to be rotatable in the direction of the cylinder axis. A gear 8 is assembled so as to mesh with a gear 11 fitted on a rotating shaft 10 of the rotary damper 5 installed in the inner cylinder 4. Further, rectifying plates 12 and 13 having a honeycomb structure are interposed in the middle of the ventilation passages of the central outlet a and the outer circumferential outlet b, respectively. Inner cylinder 4
The diameter of the rear end (air inflow side) is widened toward the end, and serves to narrow the air inlet to the outer peripheral outlet b and slow down the air flow passing through this part. The spherical shape of the inner peripheral surface of the casing allows the inner and outer cylinders to oscillate in order to deflect the air blowing direction.

Regarding the usage and function of the air outlet of an air conditioner having the above-described structure, FIG. Figure 10 shows the distribution curve of the temperature attainment rate (described later) measured on a vertical plane at a point 70 cm away from the outlet. When the damper 5 is brought to the horizontal position as shown in Figure 6A, the flow velocity ratio of the respective flow velocities Va and Vb of the air blown out from the center outlet a and the outer circumferential outlet b is
The outer diameter of the enlarged rear end portion of the inner cylinder 4 is determined in advance so that Vb/Va>1. By adjusting the rotation angle of the damper 5, the flow velocity ratio of the blown air at both the air outlets a and b can be changed as desired. When the damper 5 is brought to the flow path blocking position as shown in FIG.
The relationship changes to >1. Therefore, the values of Vb/Va at the damper positions A and C in Figure 6 are calculated respectively.
FIG. 10 shows the distribution graph of the temperature attainment rate at each damper position (a) and (b) when the conditions are set to 0.3 to 0.6 and 1.2 to 1.6. Here, the temperature attainment rate is: Temperature attainment rate = (Ambient temperature - Temperature at the measurement point) / (Ambient temperature - Outlet temperature) In this example, the ambient temperature is 60℃, the outlet cold air temperature is 12℃, and the outlet flow rate is a. , b The combined output of both air outlets was 150 cm ³ /hr. The graph indicated by x in the figure is that of the air outlet of this embodiment, and y is that of the air outlet of the conventional structure. What can be understood from this graph is that under this test condition, in which air is blown into an almost static atmosphere with respect to the air outlet having the structure of the present invention,
By reducing the wind speed at the outer circumferential outlet b and keeping the viscous force between it and the stationary atmosphere low, the diffusion attenuation of the blown air flow is suppressed, and temperature dissipation is also prevented, as shown in Figure 10 A. If the temperature reach distance is extended as shown in Fig. 10, and conversely, if the wind speed at the outer circumferential outlet b is increased to actively generate viscous force between the atmosphere and the blown air, the blown air flow will be as shown in Figure 10. As shown in (b), it is a fact that the air diffuses rapidly and spreads over a wide area, creating a calm air flow. Note that the vertical axis of the graph indicates the distance between the positions in the vertical direction from the center of the flow of the blown air.

Next, in FIGS. 7 and 8, which are a front view and a side sectional view showing an air outlet as another embodiment of the present invention, the structures of the casings 1 and 2 and the outer cylinder 3 are similar to those of the previously described embodiments. Although they are the same, the inner cylinder is divided into two parts, front and back in the air blowing direction, and the rear (air inflow side) inner cylinder 14 is connected to the outer cylinder via a spacer 16 arranged in a cross shape in the gap between the inner and outer cylinders. 3, and its front inner cylinder 15 is fitted into a fixed guide cylinder 17 so as to be movable back and forth in the cylinder axis direction. The guide tube 17 is attached to the outer tube 3 using a spacer 18 in the same manner as the rear inner tube 14 is fixed. The abutting end surfaces 14a and 15a of the rear inner cylinder 14 and the front inner cylinder 15 are different from mere cylinder cut surfaces; It is given a constricted shape with a tapered diameter, and both the front and rear inner cylinders have their respective end faces 14.
a and collide at 15a. A knob 19 is attached to the front end of the front inner cylinder 15, and by pushing and pulling this knob, the front inner cylinder 15
moves back and forth to bring the front and rear inner cylinders into close contact with each other, or to separate them by keeping an arbitrary gap to create a space inside the inner cylinder as the center outlet c for conditioned air, and a space between the inner and outer cylinders as the outer circumferential outlet d. A so-called openable and closable bypass air passage is provided to communicate with the space formed in the air. FIG. 9 explains how the bypass air passage e is opened and closed. Note that honeycomb-shaped current plates 20 and 21 are incorporated in the center air outlet c and the outer peripheral air outlet d, respectively.

Regarding the usage and function of the air outlet of an air conditioner as another embodiment of the present invention having the above-described structure, the following section shows the relationship between the operation of the inner cylinders 14 and 15 and the flow path of the blown air. Referring to Figure 9, Figure 9A is a schematic side cross-sectional view of the outlet when the knob 19 is fully pushed in, and the front and rear inner cylinders are combined and the bypass air passage e is closed. ing. In this example, the flow velocity ratio of the air outlet velocities Vc and Vd of the center outlet c and the outer outlet d is Vd/Vc=0.3 to 0.6.
is adjusted within the range of When the knob 19 in FIG. 9C is fully pulled out, the front inner cylinder moves forward, so the bypass air passage e generates a bypass flow from the center outlet c opened to the maximum gap to the outer circumferential outlet d. The amount of air passing through the central outlet c decreases, and the amount of air blown from the outer outlet d increases, resulting in a flow velocity ratio of Vd/Vc = 1.2 to 1.6.
The same gentle airflow as shown in FIG. 6C in the previously described embodiment can be obtained. When the knob 19 is in the intermediate position, that is, the state shown in FIG. 9B, the flow velocity ratio is Vd/
When Vc=1.0, an air conditioning airflow with a moderate degree of airflow diffusion is obtained.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the air outlet of the air conditioner of the present invention incorporated into an automobile instrument panel, FIGS. 2 to 4 are a front view, side sectional view, and rear view of the air outlet, and FIG. The figure is an exploded view, FIG. 6 is a side sectional view explaining the operation of the air outlet, FIGS. 7 and 8 are a front view and side sectional view of an air outlet as another embodiment of the present invention, and FIG. 9 is a side sectional view explaining the operation of the air outlet. is an explanatory diagram of its operation, and FIG. 10 is a graph of the temperature attainment rate of the outlet shown in FIGS. 2 to 5. In the diagram 1, 2...Casing of the air outlet, 3
...Outer cylinder, 4...Inner cylinder, 5...Rotating damper, 6,
16,18...Spacer, 8...Gear, 9,1
9...Knob, 10...Damper rotation axis, 11...
Gear, 14... Rear inner cylinder, 15... Front inner cylinder,
a, c...center air outlet, b, d...outer air outlet, e...bypass air passage.

Claims (1)

[Scope of Claims] 1 It has a double-layered cylindrical structure, the inner and outer cylinders, and by changing the amount of air passing through the inner cylinder and the gap between the inner and outer cylinders, or the ratio of the air flow velocity, the amount of blown air can be adjusted. The air outlet has a variable reach distance and degree of dispersion, and the inner cylinder is coaxially and rotatably inserted in the outer cylinder, and the inner cylinder has a built-in rotary valve. An air outlet for an air conditioner, characterized in that a mechanism is attached for interlocking the rotation of a damper and the rotational movement of the inner cylinder. 2. The interlocking mechanism between the inner cylinder and the damper includes a gear fitted on the rotating shaft of the damper, and a gear provided along the circumferential direction of the inner cylinder so as to fit into the gear. The air outlet of an air conditioner according to claim 1, characterized in that the outlet is formed of a combination. 3. The air outlet of an air conditioner according to claim 1 or 2, wherein the intake side end of the inner cylinder has an enlarged cylinder diameter shape that widens toward the end. 4. An air outlet that has a dual inner and outer cylinder structure, and the reach distance and degree of dispersion of the blown air can be varied by changing the ratio of the amount of air passing through the inner cylinder and the outer cylinder, respectively, The inner cylinder is divided into two parts in the cylinder axis direction, and the divided inner cylinders are installed so that they can be combined or separated by sliding in the cylinder axis direction, and one divided end of the divided inner cylinder is arranged to allow air to flow through the cylinder. The divided end has an expanded shape that widens outward toward the downstream side of the flow, and the other divided end has a narrowed shape that narrows inward toward the upstream side, changing the gap between both divided ends of the divided inner cylinder. An air outlet for an air conditioner, characterized in that the ratio of the amount of air passing through the inner and outer cylinders can be changed by changing the amount of air passing through the inner and outer cylinders.