JPH08145450A - Fluid blowing-out port structure - Google Patents

Abstract

PURPOSE: To provide a fluid blowing-out port structure in which a fluid flow is changed periodically, no staying is found in the flow and a periodic changing of the flow can be changed from a gradual slow flow to a rapid high speed flow without using any power. CONSTITUTION: A slit-like blowing-out port is formed by a diffuser 1 which is expanded in a fan-like shape, a blowing-out port 3-1 of a float 3 for use in blowing out fluid is arranged at a narrow inlet port 1-2 of the diffuser 1 and then both end openings 2-1 and 2-2 of a loop pipe passage 2 are arranged at a connecting part between a narrow inlet port 1-3 of the diffuser 1 and the blowing-out port 3-1 of the flat 3. In addition, a splitter 1 with a column-like or a rectangular column-like shape is arranged at the midway part of an expanded part of the diffuser.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an air conditioner outlet,
The present invention relates to a fluid outlet structure suitable for a cooler outlet in an automobile.

[0002]

2. Description of the Related Art Conventionally, the airflow direction is always constant at the air outlet of an air conditioner and the cooler outlet of an automobile, so that the airflow distribution becomes stagnation, which causes discomfort when the face or body is hit by wind. It was In order to prevent this, swinging the louver and changing the angle of the louver were performed with other power.

[0003]

However, in the above-mentioned conventional method, a mechanism for swinging the head, a mechanism for changing the angle of the louver, a mechanism for changing the angle of the louver, and another mechanism or power are required, and the apparatus becomes complicated. There was a problem.

The present invention has been made in view of the above points, and eliminates the problems of the above-described conventional fluid outlet structure, the flow of the fluid changes periodically, the flow has no stagnation, and power is supplied. (EN) It is intended to provide a fluid outlet structure capable of changing a cycle from a gradual one to a sudden one without using it.

[0005]

In order to solve the above-mentioned problems, according to the present invention, as shown in FIGS. 1 (a) and 1 (b), a fan-shaped expanding diffuser 1 is used to form a slit-shaped blowout port. The blowout port 3-1 of the float 3 that blows out the fluid is disposed at the narrow portion inlet 1-3 of the Diffuser 1, and further,
At both ends of the loop conduit 2 at the connection between the narrow inlet 1-3 of the diffuser 1 and the outlet 3-1 of the float 3
-1 and 2-2 are provided.

Further, the enlarged portion 1-of the Diffuser 1
A columnar or prismatic splitter 4 or 5 is provided in the middle of 4 as shown in FIG. 4 or 5.

[0007]

According to the present invention, by constructing the fluid outlet structure as shown in FIG. 1, as shown in FIG. 2, the main shaft 101 of the jet flow is located on the right side of the diffuser 1 due to the Coanda effect of the right wall 1-1 of the diffuser 1. Is biased to
A relatively slow vortex 102 is generated clockwise in the space on the left side of the diffuser 1. At this time, the pressure at the end opening 2-1 of the loop conduit 2 becomes lower than the pressure at the end opening 2-2 due to the difference in flow speed between the left and right sides of the diffuser 1, and is blown out from the blowout port 3-1 of the float 3. Part of the fluid flows into the end opening 2-2 of the loop conduit 2 and pushes out the fluid inside the loop conduit 2 from the end opening 2-1. The fluid pushed out from the end opening 2-1 pushes the jet flow to the left. The jet pushed to the left moves along the wall surface of the left wall 1-2 of the Diffuser 1 due to the Coanda effect, and then to the right wall 1.
The Coanda effect is generated between the wall surface of -1 and the wall surface of the left wall 1-2 along the wall surface of the left wall 1-2, and the main axis 101 of the jet flow is again from the left side to the right side through a process that is the opposite of the process so far. Biased. The phenomenon as described above is repeated, and the jet blowing direction oscillates left and right.

Further, as shown in FIG. 4 or 5, a columnar or prismatic splitter 4 is provided in the middle of the enlarged portion of the Diffuser.
Or, by providing 5, the jet flows away from one wall surface of the Diffuser 1 and, after adhering to the splitter 4, adheres to the other wall surface, so that the direction of the jet changes in two stages, and the swing when there is no splitter. The swing waveform is smoother than the waveform.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are views showing a fluid outlet structure of the present invention, FIG. 1A is a plan view, and FIG. 1B is a side view as seen from the direction of arrow A. As shown in the figure, in the present fluid outlet structure, the fan-shaped expanding diffuser 1 constitutes a slit-like outlet, and a narrow portion inlet 1-3 of the diffuser 1 is formed.
A blow-out port 3-1 of the float 3 that blows out the fluid is disposed in the end of the loop pipe 2 and the narrow-portion inlet 1-3 of the diffuser 1 and the blow-out port 3-1 of the float 3 are connected to each other. 2-1 and 2-2 are arranged.

Next, the operation of the fluid outlet structure having the above structure will be described. FIG. 2 is a diagram for explaining the operation of the outlet structure shown in FIG. Right wall 1 of Diffuser 1
When the main axis 101 of the jet is biased to the right side of the Diffuser 1 due to the Coanda effect of 1 (a phenomenon in which the jet adheres to the wall surface due to the viscosity of the fluid), a relatively slow vortex 102 is generated clockwise in the space on the left side of the Diffuser 1. To do.

At this time, the difference between the right and left flow velocities of the diffuser 1 (here, the flow velocity on the left side is small and the flow velocity on the right side is large).
As a result, the pressure of the end opening 2-1 of the loop conduit 2 becomes lower than the pressure of the end opening 2-2, and a part of the fluid blown out from the blow-out port 3-1 of the float 3 becomes part of the loop conduit 2 Flowing into the end opening 2-2 of the above, and the fluid inside the loop conduit 2 is pushed out from the end opening 2-1. This end opening 2-
The fluid extruded from 1 pushes the jet to the left. The jet flow pushed to the left is due to the Coanda effect.
Along the wall surface of the left wall 1-2 and then leaving the wall surface of the right wall 1-1 to form a Coanda effect between the wall surface of the left wall 1-2 and the wall surface of the left wall 1-2. After the reverse process, the jet main axis 101 is again biased from the left side to the right side.
The phenomenon as described above is repeated, and the jetting direction of the jet oscillates left and right as shown in FIG.

In the fluid outlet structure having the structure shown in FIG. 1, the jet blowing direction changes sinusoidally from side to side as shown in FIG. However, in the case of wind, the sine-wave-like change shown in FIG. 3 does not provide an intermittent feeling, and does not necessarily result in a pleasant wind flow. Therefore, in another embodiment of the present invention, a further improvement is made so that a waveform having a smooth swing can be obtained as shown in FIG.

FIG. 4 is a view showing another fluid outlet structure of the present invention. FIG. 4 (a) is a plan view and FIG. 4 (b) is a side view {corresponding to FIG. 1 (b)}. Note that, in FIG. 4, the portions denoted by the same reference numerals as those in FIG. 1 indicate the same or corresponding portions (hereinafter, the same applies to other drawings). As shown in FIG. 4, in this fluid outlet structure, a cylindrical splitter 4 is provided in the enlarged portion 1-4 of the diffuser 1.

As shown in FIG. 4, by providing a cylindrical splitter 4 in the enlarged portion of the day diffuser 1, the jet flow leaves one wall surface of the day diffuser 1 (for example, the wall surface of the right wall 1-1) and enters the splitter 4. When it adheres to the other wall surface (for example, the wall surface of the left wall 1-2) after the adhesion, the direction of the jet flow suddenly changes, and compared with the swing waveform shown in FIG. It becomes a square-shaped swing waveform.

Incidentally, the splitter provided in the enlarged portion 1-4 of the Diffuser 1 is not limited to the column,
The splitter 5 may be a quadrangular prism as shown in FIGS. 5A and 5B, or may be another polygonal prism.

FIG. 7 and FIG. 8 respectively show the Diffuser 1.
FIG. 6 is a diagram showing a result of simulating a state of a jet flow direction change using a computer when a cylindrical splitter is provided in the enlarged portion of FIG. As shown in the figure, by providing the cylindrical splitter 4, the direction of the jet flow changes,
As shown in FIG. 6, a square-shaped swing waveform is obtained.

[0017]

As described above, according to the present invention, the flow of fluid changes periodically, there is no stagnation in the flow, and the change of the cycle can be changed from gentle to abrupt without using power. An excellent effect that a fluid outlet structure that can be changed can be obtained is obtained.

[Brief description of drawings]

FIG. 1 is a view showing a fluid outlet structure of the present invention.
1A is a plan view, and FIG. 1B is a side view seen from the direction of arrow A.

FIG. 2 is a diagram for explaining the operation of the outlet structure shown in FIG.

3 is a diagram showing a state in which the jet flow direction of the fluid outlet structure of FIG. 1 is changed.

FIG. 4 is a view showing another fluid outlet structure of the present invention,
FIG. 4 (a) is a plan view, FIG. 4 (b) is a side view {FIG. 1 (b).
Is equivalent to}.

FIG. 5 is a view showing another fluid outlet structure of the present invention,
5 (a) is a plan view, FIG. 5 (b) is a side view {FIG. 1 (b).
Is equivalent to}.

6 is a diagram showing a state in which the jet flow direction of the fluid outlet structure of FIG. 4 is changed.

FIG. 7 is a diagram showing a result of simulating a direction change of a jet flow using a computer when a column-shaped splitter is provided in an enlarged portion of the diffuser in the fluid outlet structure of the present invention.

FIG. 8 is a diagram showing a result of simulating, using a computer, a state of a jet flow direction change in the case where a cylindrical splitter is provided in the enlarged portion of the diffuser in the fluid outlet structure of the present invention.

[Explanation of symbols]

 1 Diffuser 2 Loop line 3 Float 4 Splitter 5 Splitter

Claims (2)

[Claims] 1. A fan-shaped expanding diffuser constitutes a slit-shaped blow-out port, and a float blow-out port that blows out a fluid is arranged at the narrow-portion inlet of the defuuser, and further, the narrow-portion inlet and the float of the day-fuzer are provided. A fluid outlet structure in which openings at both ends of a loop pipe are arranged at a connecting portion of the outlet. 2. The fluid outlet structure according to claim 1, wherein a columnar splitter is provided in the middle of the enlarged portion of the diffuser.