JPH08145449A - Fluid blowing-out port structure - Google Patents

Abstract

PURPOSE: To provide a fluid blowing-out port structure capable of performing a periodic changing of a fluid flowing direction without using any power. CONSTITUTION: A slit-like blowing-out port is constructed by a difuser 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 1-3 of the diffuser 1. Both end openings 2-1 and 2-2 of a loop pipe passage 2 are arranged at a connected part between the narrow inlet port 1-3 of the diffuser 1 and the blowing- out port 3-1 of the float 3 and there is provided a means capable of changing a resistance in the pipe passage in the loop pipe passage 2 in which a pipe passage resistance in the means such as an orifice 4 or a valve (not shown). In addition, it is possible to change optionally a pipe passage length of the loop pipe passage 2.

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, since the airflow direction is always constant at the air outlet of an air conditioner or the air outlet of a cooler in an automobile, the airflow velocity distribution received by the user is biased and the face or body is hit by the wind. At times, discomfort due to local cooling may occur. Also, in order to prevent this, swinging of the louver and swinging of the louver were performed by another power.

[0003]

However, in the above-mentioned conventional method, a mechanism for swinging or roubusing and a power source for driving the mechanism have to be provided at the blow-out port, and the apparatus becomes complicated. At the same time, there was a problem that it became expensive.

The present invention has been made in view of the above points, and an object thereof is to provide a fluid outlet structure capable of periodically changing the flow direction of a fluid without using power.

[0005]

In order to solve the above-mentioned problems, according to the present invention, as shown in FIG. 1, a slit-shaped blow-out port is formed by a fan-shaped expanding diffuser 1, and a narrow-portion inlet 1 of the diffuser 1 is formed. -3 is provided with a blowout port 3-1 of the float 3 that blows out the fluid, and the narrow portion inlet 1-3 of the defuzer 1 and the blowout port 3- of the float 3 are provided.
Opening portions 2-1 and 2-2 at both ends of the loop conduit 2 at the connecting portion of 1
Is provided and the loop conduit 2 is provided with a conduit resistance varying means such as an orifice or a valve for varying the conduit resistance.

Further, as shown in FIG. 2, the loop conduit 2 has a structure in which its conduit length can be varied so that the conduit resistance and the inertia of the fluid inside the loop conduit 2 can be changed. Is characterized by.

[0007]

According to the present invention, by constructing the fluid outlet structure as shown in FIG. 1, as shown in FIG. 4, for example, the main axis 101 of the jet flow of the diffuser 1 is the main shaft 101 of the diffuser 1 due to the Coanda effect of the right wall 1-1 of the diffuser 1. When it is biased to the right, a relatively slow vortex 102 is generated in the clockwise direction 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 the flow velocities between the left and right sides of the diffuser 1, and is blown out from the blowout port 3-1 of the float 3. Some of the fluid is
It flows into the end opening 2-2 of the loop conduit 2 and the loop conduit 2
The fluid inside the container is pushed out 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 main axis 101 of the jet flow again from the left side to the right side after leaving the wall surface of -1 and creating a Coanda effect between the wall surface of the left wall 1-2 and the wall surface of the left wall 1-2, which is the opposite process to the previous process. Biased. The phenomenon as described above is repeated, and the jet blowing direction oscillates left and right.

When the resistance of the loop conduit 2 is controlled by providing conduit resistance varying means such as an orifice 4 or a valve for varying the conduit resistance in the loop conduit 2, the end opening 2-1 and the end opening are controlled. Loop line 2 for pressure difference between 2 and 2
Since the flow rate inside is controlled, the force pushing the jet flow is controlled and the oscillation cycle can be changed arbitrarily.

Further, by adopting a structure in which the conduit length of the loop conduit 2 can be varied, the conduit resistance and the magnitude of the inertia of the fluid in the loop conduit 2 are changed, and the oscillation cycle can be arbitrarily changed. it can.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, the basicity of the fluid outlet structure of the present invention will be described. 3A and 3B are views showing the basic configuration of the fluid outlet structure of the present invention, FIG. 1A is a plan view, and FIG. 1B is a side view taken in the direction of arrow A. As shown in the figure, in the present fluid outlet structure, a fan-shaped expanding diffuser 1 constitutes a slit-like outlet, and an outlet 3 of a float 3 for ejecting a fluid to a narrow inlet 1-3 of the diffuser 1.
-1 is arranged, and further, the narrow portion entrance 1 of the Diffuser 1
-3 and the blowout port 3-1 of the float 3 are provided with opening portions 2-1 and 2-2 at both ends of the loop conduit 2.

The operation of the fluid outlet structure having the above structure will be described. FIG. 4 is a diagram for explaining the operation of the outlet structure shown in FIG. When the main shaft 101 of the jet is biased to the right side of the Diffuser 1 due to the Coanda effect of the right wall 1-1 of the Diffuser 1 (a phenomenon in which the jet adheres to the wall due to the viscosity of the fluid), the space on the left side of the Diffuser 1 is rotated clockwise. A relatively slow vortex 102 is generated.

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 the blowout port 3 of the float 3
A part of the fluid blown out from -1 flows into the end opening 2-2 of the loop conduit 2, and the fluid inside the loop conduit 2 is pushed out from the end opening 2-1. This end opening 2-1
The fluid pushed out pushes the jet to the left. Due to the Coanda effect, the jet flow pushed to the left moves along the wall surface of the left wall 1-2 of the Diffuser 1 and then leaves the wall surface of the right wall 1-1 until it reaches the wall surface of the left wall 1-2. Then, the Coanda effect is generated, and the main axis 101 of the jet flow is biased from the left side to the right side again through a process that is left-right opposite to the conventional process. The phenomenon as described above is repeated, and the jetting direction of the jet oscillates left and right as shown in FIG.

FIG. 1 is a perspective view showing a fluid outlet structure of the present invention. In FIG. 1, the same reference numerals as those in FIG. 3 indicate the same or corresponding portions (hereinafter, the same applies to other drawings). As shown in the figure, in the present fluid outlet structure, the diffuser 1 constitutes a slit-like outlet, and the outlet 3 -1 of the float 3 which blows out the fluid is disposed at the narrow inlet 1-3 of the diffuser 1, and , Both end openings 2- 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.
The arrangement of 1 and 2 is the same as the basic configuration of FIG. In this fluid outlet structure, an orifice 4 for narrowing the flow passage cross section is provided in the middle of the loop passage 2 in order to increase the resistance of the passage.

As described above, the orifice 4 is provided in the loop line 2.
By providing the pipe line resistance, the end opening 2-1 is increased.
The flow rate in the loop conduit 2 with respect to the pressure difference generated between the end opening 2-2 and the end opening 2-2 is limited, the force pushing the jet flow is limited, and the oscillation cycle changes. Although not shown, the orifice 4 is replaced with a valve for controlling the flow rate of the fluid in the middle of the loop conduit 2, and the fluid flowing in the loop conduit 2 is arbitrarily controlled, so that the loop conduit 2 can be controlled. The flow rate in the loop conduit 2 with respect to the pressure difference generated between the end opening 2-1 and the end opening 2-2 is controlled, and the force for pushing the jet flow can be arbitrarily controlled. Can be changed arbitrarily.

FIG. 2 is a view showing another fluid outlet structure of the present invention. As shown in FIG. 2, in the present fluid outlet structure, the length of the loop conduit 2 can be arbitrarily changed. That is, the structure is such that the U-shaped pipe 2-3 such as a trombone can be slid, and the pipe length of the loop pipe 2 can be arbitrarily changed by changing within the slide length L. Has become.

As described above, by adopting the structure in which the length of the loop conduit 2 can be varied, the conduit resistance and the magnitude of the inertia of the fluid in the loop conduit 2 are changed, and the oscillation cycle is arbitrarily set. Can be changed.

[0017]

As described above, according to the present invention, the following excellent effects can be obtained. (1) By providing the conduit resistance varying means in the loop conduit, the resistance of the loop conduit is controlled, and the flow rate in the loop conduit with respect to the pressure difference generated between the openings at both ends of the loop conduit is controlled. And then
The force that pushes the jet is controlled, and the oscillation period can be changed arbitrarily. (2) Further, by adopting a structure in which the conduit length of the loop conduit can be varied, the conduit resistance and the magnitude of the inertia of the fluid in the loop conduit are changed, and the oscillation cycle can be arbitrarily changed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a fluid outlet structure of the present invention.

FIG. 2 is a plan view showing another fluid outlet structure of the present invention.

3A and 3B are diagrams showing a basic configuration of a fluid outlet structure of the present invention, FIG. 3A is a plan view, and FIG. 3B is a side view seen from an arrow A direction.

FIG. 4 is a diagram for explaining the basic operation of the fluid outlet structure of the present invention.

FIG. 5 is a diagram showing a state in which the direction of a jet flow is changed in the fluid outlet structure of the present invention.

[Explanation of symbols]

 1 Diffuser 2 Loop line 3 Float 4 Orifice

Claims (2)

[Claims] 1. A fan-shaped expanding diffuser constitutes a slit-shaped blow-out port, and a blow-out port of a float that blows out a fluid is provided at the narrow-portion inlet of the defuuser, and the narrow-portion inlet of the day-fuzer and the blow-off of the float. A fluid outlet structure in which opening portions at both ends of a loop conduit are provided at a connection portion of a mouth, and conduit resistance varying means for varying the conduit resistance is provided in the loop conduit. 2. The loop conduit is structured so that its conduit length can be varied, and the conduit resistance and the inertia of the fluid in the loop conduit can be changed.
The described fluid outlet structure.