Heat exchange – With adjustor for heat – or exchange material – flow
Reexamination Certificate
2000-01-12
2001-08-21
Leo, Leonard (Department: 3743)
Heat exchange
With adjustor for heat, or exchange material, flow
C165S122000, C454S309000, C454S313000
Reexamination Certificate
active
06276440
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a device for controlling diffused air for an air conditioning and heating device and so on.
2. Discussion of Background
The device for controlling diffused air in a conventional air conditioning and heating device will be explained referring to FIG.
16
. In
FIG. 16
, there is shown a vertical cross-sectional view of the indoor unit of the air conditioning and heating device disclosed in JP-B-830600. In the air conditioning and heating device, the indoor unit is constituted by a heat exchanger
1
, a fan
2
, an air outlet
10
for diffusing conditioned air
11
, a first flap
12
for changing a diffusing angle of the conditioned air
11
in a vertical direction, and a second flap for changing a diffusing angle of the conditioned air
11
in a horizontal direction. In order to obtain required heating capacity, there are proposed a measure to ensure large air volume and a measure to heat diffused air to a high temperature (raise a refrigerant condensing temperature). In general, the latter measure is adopted to raise the temperature of diffused air since it is difficult to obtain sufficient air volume to heat a room having a large space. High temperature of diffused air is likely to rise because of increased buoyancy, creating a problem in that high temperature of air stays near to a ceiling of a room to prevent the temperature near to a floor from rising to a sufficient level and a person in the room feels uncomfortable. In a conventional way wherein high temperature of diffused air can overcome buoyancy to reach the floor so as to establish a comfortable room environment with a temperature difference minimized between the ceiling and the floor, a downward component of the velocity of the diffused air in a vertical direction has been raised to cope with the problem. For example, the case of
FIG. 16
has adopted a measure to raise a downward component of the velocity of the diffused air by directing the first flap
12
substantially downwardly so that an air path defined by the first flap
12
and a lower wall surface of the air outlet
10
is convergent toward to a downstream direction.
The conventional measure stated earlier requires that a pressure generated by the fan
2
be large in order to obtain required diffused air velocity, creating a problem in that it is necessary to increase fan power. In particular, a room having a large space requires vigorous conditions for ensuring required downward component of the velocity because of increased buoyancy caused by an increase in the temperature of the diffused air in heating. On the other hand, the diffusing angle for diffused air is required to be substantially horizontal in order that heated air can reach to a position far from the air conditioning and heating device. However, conventional way has created-a problem in that it is impossible to ensure required velocity in other modes than the one for diffusing conditioned air downwardly because the angle of the air outlet
10
is fixed.
SUMMARY OF THE INVENTION
It is an object of the present invention to dissolve these problems, and to provide a measure to establish a comfortable room environment by allowing conditioned air to reach a floor without lowering heating capacity and increasing fan power in heating.
According to a first aspect of the present invention, there is provided a device for controlling diffused air comprising an air outlet structure connected to a terminal end of an air path so as to diffuse air into ambient air; a flap arranged in the air outlet structure for deflecting a diffusing direction of the diffused air; and ambient air drawing and mixing means for drawing the ambient air into the diffused air and mixing the ambient air with the flow air.
According to a second aspect of the present invention, the ambient air drawing and mixing means is arranged in the air outlet structure so as to project into the diffused air and is constituted by at least one three-dimensional structure for generating a vertical vortex in the diffused air.
According to a third aspect of the present invention, the three-dimensional structure is constituted by a triangular or rectangular plate, and the plate has a contacting side contacting the air outlet structure so that the contacting side is set at a certain angle with respect to the flow direction.
According to a fourth aspect of the present invention, the three-dimensional structure is arranged perpendicularly to a surface of the air outlet structure which the three-dimensional structure contacts.
According to a fifth aspect of the present invention, the three-dimensional structure has the contacting side arranged so as to be set at substantially an angle of 10°-30° with respect to the flow direction.
According to a sixth aspect of the present invention, the three-dimensional structure has a projection edge extended from a surface of the air outlet structure which the three-dimensional structure contacts, and the projection edge has a projection height h of substantially ⅕-2 times a length L of the contacting side.
According to a seventh aspect of the present invention, a plural number of the three-dimensional structures are arranged at positions corresponding to vertical sections of the diffused air, and a distance S between adjacent three-dimensional structures is substantially 5-10 times a length L of the contacting side.
According to an eighth aspect of the present invention, the three-dimensional structure has a projection edge extended from a surface of the air outlet structure which the three-dimensional structure contacts, and the projection edge has a projection height h of substantially {fraction (1/20)}-⅓ times a width W of the air outlet structure in a direction where the projection edge extends.
According to a ninth aspect of the present invention, a plural number of the three-dimensional structures are arranged at positions corresponding to vertical sections of the diffused air, and adjacent three-dimensional structures are arranged convergently so as to be plane-symmetrical each other with respect to a plane parallel to the flow direction.
According to a tenth aspect of the present invention, the three-dimensional structure has a bottom surface which contacts the air outlet structure, and the three-dimensional structure is formed in one of a circular cone shape, a semicircular cone shape and an elliptical cone shape.
According to an eleventh aspect of the present invention, the three-dimensional structure has an apex located on a downstream side of the diffused air with respect to an axis extending perpendicularly to a center of the bottom surface.
According to a twelfth aspect of the present invention, the three-dimensional structure has a bottom surface which contacts the air outlet structure, and the three-dimensional structure is formed in a pyramid shape.
According to a thirteenth aspect of the present invention, the three-dimensional structure is formed in a triangular pyramid shape, a triangle as a bottom surface of the triangular pyramid shape has a side located substantially perpendicularly to the flow direction, and the side is located on one of an upstream side and a downstream side of the diffused air with respect to the other sides of the triangle.
According to a fourteenth aspect of the present invention, the side of the triangle is located so that a point of intersection between a perpendicular extending from an apex of the triangular pyramid shape to the air outlet structure and the air outlet structure is located on a downstream side of the diffused air with respect to the side of the triangle.
According to a fifteenth aspect of the present invention, the flap is arranged in the air outlet structure so as to guide the diffused air in a horizontal direction, and the three-dimensional structure is arranged on at least one of an upper leading edge and a lower leading edge of the flap on a downstream side of the diffused air.
According to a sixteenth aspect of the present invention, the flap is
Kaga Kunihiko
Kotoh Satoru
Kumekawa Eriko
Ootsuta Katsuhisa
Seki Tatsuo
Leo Leonard
Mitsubishi Denki & Kabushiki Kaisha
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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