JPH0834227A - Fragrance device for compartment - Google Patents

Abstract

PURPOSE:To simplify the structure of a fragrance device for a compartment and to adjust the scattering quantity of a fragrant agent according to the blowing out quantity of air by providing a negative pressure generating means requiring no power as a fragrant agent scattering means, and forming the negative pressure generating means of a tubular body which protrudes inside a duct and bends its end toward the downstream of an air flow CONSTITUTION:An air flow from the blower fan 1 of an air conditioner goes toward a blow out hole 2 through art evaporator 11 and a heater core 12 which are provided in an air flow passage. A tubular body 13 is protruded inside a duct 3 just before the blow out hole 2. The tubular body 13 turns its end toward the downstream of an air flow, and a fragrant agent container 7 is attached to the other end of the tubular body 13. Thus, the blower fan 1 makes the air flow inside the duct 3 generate negative pressure in the end part of the tubular body 13. The fragrant agent is drawn out by pressure difference DELTAp between the negative pressure and atmospheric pressure and emitted into the duct 3. A power source is therefore unnecessary for the atomization of the fragrant agent, and the optimum atomized quantity can be obtained by the pressure difference DELTAp according to the speed of an air flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vehicle fragrance device for spraying a fragrance or deodorant into a vehicle interior.

[0002]

2. Description of the Related Art As compared with a room such as a house, the ratio of human beings in the vehicle interior is much higher, so that the smoke of cigarettes and the smell of interior parts are more likely to be muffled. Therefore, an aroma or deodorant has been generally used, which puts a container in which a fragrance or a deodorant is enclosed in the vehicle compartment and vaporizes the agent from the opening of the container to eliminate a bad odor in the vehicle compartment. . In recent years, an aroma device for a vehicle compartment has been put into practical use in which the aroma and deodorant are taken into the inside of an air conditioner, and the aroma and deodorant are sprayed from a duct of the air conditioner.

The aroma device for a vehicle compartment has a structure as shown in FIG. The fragrance device is provided with an fragrance spraying means 4 at an intermediate portion of a duct 3 extending from a blower fan 1 of an air conditioner to an outlet 2. The fragrance spraying means 4 vaporizes the fragrance in the fragrance container 7 with the air taken in from the intake port 6 by the electric fan 5, and discharges the air containing the volatile fragrance from the communication duct 8 to the duct 3. Is. Therefore, it has an electric fan driving power source 9 and an operating circuit 10. As the fragrance, various kinds such as liquid and solid are used.

Further, there is a fragrance device for a vehicle compartment, which does not have an electric fan as a fragrance spraying means and sprays the fragrance into the duct by using a blower fan of an air conditioner.
No. 2-85709.

[0005]

However, in the apparatus having the electric fan for spraying the fragrance as described above, since the electric fan driving power source and the operating circuit are required, the apparatus is large and expensive. It becomes a thing. Further, in the air conditioner using a blower fan, the installation location of the fragrance agent is limited to some extent by the installation location of the blower fan, so replacement of the fragrance agent requires considerable time and effort.

The present invention has been made in view of the above problems, and an object of the present invention is to disperse an air freshener in a duct of an air conditioner by using air freshener spraying means that does not require power. An object of the present invention is to provide a fragrance device for a vehicle compartment having a simple structure and capable of adjusting the amount of spraying according to the amount of air blown out.

[0007]

Means for Solving the Problems According to the present invention for solving the above-mentioned problems, a vehicle interior having an air freshener spraying means in an intermediate portion of a duct from a blower fan to an outlet of an air conditioner in the vehicle interior. In the aroma device for use, negative pressure generating means that does not require power is provided as the fragrance spraying means, the negative pressure generating means projects a tubular body into a duct, and ends the tubular body in a downstream direction of an air flow. It is characterized by being curved.

In the present invention, as the negative pressure generating means, a convex portion is formed integrally with the duct, and a hole is formed at the apex portion of the convex portion in the downstream direction of the air flow in the duct. It is also possible. Further, it is preferable that a coronal protrusion is integrally formed around the convex portion toward the outside of the duct, and the protrusion is used as an attachment portion of the communication duct with the air freshener container.

[0009]

In the duct of the air conditioner, the end of the tubular body having the opening is projected toward the downstream direction of the air flow, and the other end of the tubular body is connected to the fragrance container. The air flow in the duct creates a negative pressure at the end of the tubular body provided in the duct. Further, when a convex portion is formed inside the duct and a hole is bored at the apex portion of the convex portion in the downstream direction of the air flow in the duct, a negative pressure is generated in the convex portion.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the figure, the same or corresponding parts as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

The aroma device of the present invention has a structure as shown in FIG. The air flow created by the blower fan 1 of the air conditioner is directed to the blowout port 2 via the evaporator 11, the heater core 12, etc. provided in the air flow path. The tubular body 13 is projected inside the duct 3 located immediately before the outlet 2. The tubular body 13 has its end portion directed toward the air flow downstream direction. The fragrance container 7 is attached to the other end of the tubular body 13.

In the aroma device thus constructed, when an air flow is generated in the duct 3 by the blower fan 1, a negative pressure is generated at the end of the tubular body 13. The pressure difference from the atmospheric pressure at this time is Δp. Due to this pressure difference Δp, the fragrance is sucked out and discharged into the duct 3. Here, the relationship between the air flow velocity V and the pressure difference Δp is shown in FIG. When the air flow velocity V increases, the pressure difference Δp also increases.

Therefore, it is not necessary to use a power source such as an electric fan for spraying the fragrance. Further, the pressure difference Δp also changes according to the air flow velocity in the duct 3, and the spray amount of the fragrance changes depending on the increase / decrease in the pressure difference, so that the optimum spray amount according to the air flow velocity can be obtained.

Next, a second embodiment will be described with reference to FIGS. The second embodiment differs from the first embodiment in that, in the second embodiment, as the negative pressure generating means, a convex portion 14 is formed inside the duct 3, and the apex portion of the convex portion 14 is provided inside the duct. That is, the holes 15 are formed in the downstream direction of the air flow. With respect to other parts, the same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 4, the negative pressure generating means integrally forms the convex portion 14 when the duct 3 is molded, and the convex portion 1 is formed.
The required shape can be obtained by cutting off the downstream direction of the air flow in the duct at the top of 4 as shown by the chain double-dashed line. Even in the negative pressure generating means formed as described above, negative pressure is generated in the convex portion 14, and the air flow velocity V and the hole 1
Since the relationship with the pressure difference Δp with respect to the atmospheric pressure generated in the five parts has the same relationship as in FIG. 2 shown in the first embodiment,
The negative pressure also changes depending on the air flow velocity in the duct 3, and the amount of spray of the fragrance is determined by the increase or decrease of the negative pressure.

Further, in the case of the second embodiment, as shown in FIG. 5, a crown-shaped projecting portion 16 is integrally formed around the convex portion 14 toward the outside of the duct, and the projecting portion 16 is a fragrance. It can be used as an attachment part of the communication duct 8 with the container. Therefore, no separate part is required for mounting the communication duct 8. Since all the shapes provided in the ducts 3 can be integrally molded, they can be easily manufactured and a sufficient negative pressure can be generated with a simple structure. The fragrance container 7 used at this time is a mounting portion 1 for connecting with the communication duct 8.
It is a casing having 7 and an intake port 6, and the fragrance F inside is exchangeable.

In the above embodiment, since the fragrance container is arranged near the outlet, the fragrance can be easily replaced by providing the dash panel with the opening.

[0018]

As described above, the present invention has the following effects. A negative pressure generating means that does not require power is provided as the fragrance spraying means, and the negative pressure generating means is such that the tubular body is projected into the duct and the end portion of the tubular body is curved in the downstream direction of the air flow. Since the other end of the tubular body is connected to the fragrance container, a negative pressure is generated at the end of the tubular body provided in the duct due to the air flow in the duct.
It is possible to suck the fragrance in the fragrance container by using this negative pressure.

Further, by forming a convex portion integrally with the duct and forming a negative pressure generating means by forming a hole in the apex portion of the convex portion toward the downstream direction of the air flow in the duct, The negative pressure generating means can be formed integrally with existing parts, and the structure is simple.

Further, since the fragrance is sprayed by using the negative pressure generating means, the negative pressure also changes according to the air flow velocity in the duct,
By increasing or decreasing the negative pressure, the spray amount of the fragrance can be optimized.

As described above, since a power source is not required for spraying the fragrance, the place for mounting the fragrance container is not limited. Therefore, by disposing the fragrance container in the vicinity of the dash panel and providing the opening in the dash panel, it is easy to exchange the fragrance and it is easy to enjoy various scents according to the mood.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an aroma device for vehicle compartment showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between an air flow velocity in a duct and a generated negative pressure.

FIG. 3 is a schematic view of a duct of an aroma device for vehicle compartment showing a second embodiment of the present invention.

FIG. 4 is a cross-sectional view taken along the line − in FIG.

FIG. 5 is a schematic sectional view showing an application example of the second embodiment.

FIG. 6 is a schematic view showing a conventional aroma device.

[Explanation of symbols]

 1 Blower Fan 2 Blow-out Port 3 Duct 4 Fragrance Dispersion Means 8 Communication Duct 13 Tubular Body 14 Convex 15 Hole 16 Protruding Part

Claims (3)

[Claims] 1. A vehicle interior aroma device having an air freshener spraying means at an intermediate portion of a duct from a blower fan of an air conditioner in a vehicle interior to a blowout port, wherein a negative pressure that does not require power as the air freshener spraying means. An aroma device for a passenger compartment, characterized in that the negative pressure generating means is provided with a tubular body protruding into the duct, and the tubular body end portion is curved in a downstream direction of the air flow. 2. As the negative pressure generating means, a convex portion is formed inside the duct integrally with the duct, and a hole is bored at the apex portion of the convex portion toward the downstream direction of the air flow in the duct. Characteristic fragrance device for passenger compartment. 3. A crown-shaped protrusion is integrally formed around the convex portion toward the outside of the duct, and the protrusion serves as an attachment portion of a communication duct with the air freshener container. Item 3. The aroma device for vehicle compartment according to Item 2.