JP6994741B2 - Nozzle outlet structure in air conditioning system - Google Patents

Description

The present invention relates to a nozzle outlet structure of an air conditioning system using a pancar louver.

The air-conditioning system that realizes air-conditioning for a large indoor space such as a factory or warehouse consists of an air-conditioning device, a pan-car louver that blows cool and warm air in the desired direction, and an air duct provided between the air-conditioning device and the pan-car louver. ..

The pancar louver is generally made of a thin metal plate (aluminum alloy), and is composed of an annular bearing frame having a mounting plate on the outer peripheral surface, a spherical shell, and a nozzle for blowing out. It is equipped with a spherical shell body and is fixed to an appropriate mounting portion provided at the outlet of the air duct.

Since dew condensation occurs in the above-mentioned pancar louver due to the difference between the surface temperature and the atmospheric temperature when the air conditioner is used, it has been proposed to incorporate a heat insulating material as a dew condensation prevention means.

For example, Patent Document 1 discloses a pan-car louver in which a heat-insulating air passage is formed by communicating between an opening on the duct side of a spherical shell and an opening on a nozzle with a cylinder with a heat-insulating flange. Document 2 discloses a pancar louver provided with an inner heat insulating portion on the entire inner surface of the spherical shell body and an outer heat insulating member that comes into contact with the outer peripheral surface of the spherical shell body and is fitted into a ventilation duct.

Jikkenhei 6-2047 Gazette. Japanese Unexamined Patent Publication No. 2006-46689.

In an air conditioning system that uses a pancar louver for the air outlet of cold and warm air, it has been proposed to use a heat insulating material as a means for preventing dew condensation on the pancar louver, but even if the ventilation passage in the pancar louver is simply configured to be insulated. If the ventilation duct is made of metal, the surface of the movable member is cooled through the support frame and dew condensation occurs. Therefore, as disclosed in Patent Document 2, an outer heat insulating member must be added, the entire structure is bulky, and the installation work becomes complicated.

Further, even if the ventilation path in the pancar louver has a heat insulating structure, the cold air is not necessarily blown out from the nozzle portion in a rectified state, and becomes turbulent flow (counterflow) at the periphery of the opening portion of the nozzle portion. Therefore, this turbulent flow cools the outer peripheral edge portion of the opening portion of the nozzle portion, and dew condensation occurs.

Therefore, the present invention proposes a nozzle outlet structure in a novel air conditioning system that completely achieves dew condensation prevention with a simple structure.

The nozzle outlet structure in the air conditioning system according to claim 1 of the present invention is
An air conditioner, a sphere shell body equipped with a nozzle-shaped outlet, and a pancar louver made of a thin metal plate that is formed by a support frame that movably supports the sphere shell body and is attached to the ceiling of a room, and the air conditioner. In an air-conditioning system consisting of a ventilation path provided between the pan-car louver and the pan-car louver, a ventilation path forming member made of a metal cylinder with a heat-insulating coating on the inner peripheral surface is used to ventilate the inside of the sphere of the pan-car louver with a heat-insulating structure. A support portion made of a heat insulating material projecting from the outer peripheral surface of an intermediate portion and a lower heat insulating cylinder portion having a lower opening provided with a heat insulating coating on the outer peripheral surface are formed on the ventilation passage forming member. The ventilation path end is formed, and the ventilation path forming member is fitted and attached to the spherical shell body in a state where the tip portion of the lower heat insulating cylinder portion protrudes from the outlet of the spherical shell body, and the ventilation path forming member has a heat insulating structure. It is characterized by connecting the parts.

Therefore, in the above-mentioned nozzle outlet structure, cold air from the air conditioner passes through the ventilation passages such as ducts and pipes, and is ejected from the outlet through the ventilation passage in the spherical shell body of the pancar louver. In particular, since the end of the ventilation passage of the heat insulating structure and the heat insulating ventilation passage are connected, the pancar louver is not cooled by cold air, the entire pancar louver is maintained at room temperature, and the cold air blown out from the outlet is blown from the outlet periphery. Even if a turbulent flow (counterflow) occurs in the above, since the range where the turbulent flow around the outlet is generated has a heat insulating structure, dew condensation does not occur due to the turbulent flow.

Further, in the present invention, a ventilation passage forming member made of a metal cylinder having a heat insulating coating on the inner peripheral surface is fitted and mounted inside the spherical shell to form a heat insulating ventilation passage, and an outlet of the ventilation passage forming member is formed. The inner and outer peripheral surfaces of the portion are the lower heat insulating cylinder portion of the heat insulating structure, and the tip portion of the lower heat insulating cylinder portion is projected from the nozzle mouth end of the spherical shell, and the ventilation passage forming member is attached to the existing pancar louver. Therefore, it is possible to easily construct a nozzle ejection structure in which dew condensation is prevented.

The configuration of the present invention is as described above, and in a nozzle outlet structure using a pancar louver, a sphere targeting a ventilation duct with a simple configuration in which the air passage end of the heat insulating structure is connected to the heat insulating ventilation passage in the pancar louver. Cooling of the pancar louver is prevented without providing a heat insulating part on the outer peripheral surface of the shell body, and cooling of the vicinity of the pancar louver due to turbulent flow at the outlet of cold air is prevented by making the peripheral part of the air outlet a heat insulating structure. However, the simple structure completely prevented the formation of dew.

Exploded view of the pancar louver according to the embodiment of the present invention. Cross-sectional view of the bearing and the spherical shell body. Sectional drawing of the ventilation passage forming member. Explanatory drawing of the entire outlet structure

Next, an embodiment of the present invention will be described. The pancar louver 01 used in the nozzle outlet structure of the present invention shown in the embodiment is incorporated into the aluminum alloy bearing frame 1 and the spherical shell body 2 and the spherical shell body 2 which have been conventionally adopted. It is composed of a ventilation path forming member 3.

The bearing frame 1 is formed of an annular frame portion 11 that movably holds the spherical shell portion 21 of the spherical shell body 2, and a mounting plate portion 12 that is provided around the outer periphery of the frame portion 11.

The spherical shell body 2 has a spherical shell portion 21 in which the upper and lower portions of the spherical shell are cut off, and a beak-shaped nozzle portion provided with a lower opening (nozzle opening) 23 on the opposite side of the upper opening 22 of the spherical shell portion 21. It is composed of 24, and the spherical shell portion 21 is held by the frame portion 11.

The ventilation path forming member 3 has a shape that fits inside the spherical shell 2, and is based on a metal cylinder 31 having an inner diameter corresponding to the upper opening 22 and the lower opening 23 of the spherical shell 21, and has an inner circumference. A heat insulating layer (heat insulating coating) 32 is provided on the entire surface to form a heat insulating ventilation passage A. Further, an upper heat insulating cylinder portion 33 having an outer diameter smaller than that of the upper opening 22 is provided in the upper portion, and a lower heat insulating cylinder portion 34 having an outer diameter that fits tightly with the lower opening 23 is provided in the lower portion. A support portion 35 formed of a heat insulating material interposed between the inner peripheral surface of the spherical shell body 2 and the outer peripheral surface of the metal cylinder 31 when the ventilation passage forming member 3 is incorporated into the spherical shell body 2 is provided. It's a rush.

The ventilation path forming member 3 is fitted and mounted inside the spherical shell body 2. In particular, the lower heat insulating cylinder portion 34 is projected from the lower opening 23 by at least 15 mm (20 mm as a guide) to insulate the exposed outer peripheral surface. It is formed at the heat insulating outlet 34a, which is a structure. Further, the nozzle portion 24 and the lower heat insulating cylinder portion 34 are integrated with each other by attaching a resin screw 4 penetrating them.

In the nozzle outlet structure of the present invention, the pancar louver 01 is mounted on the ceiling 02 of the air-conditioned room, and the upper heat insulating cylinder 33 of the pancar louver 01 is connected to an air conditioner (not shown) in a flexible duct having a heat insulating structure. (Blower B) 03 is connected and constructed.

Specifically, the pancar louver 01 is provided with an appropriate through hole at a predetermined position on the ceiling 02 in the same manner as before and the construction means, and a pancar louver mounting hole corresponding to the through hole is provided in the ceiling base rail 04 behind the ceiling. The provided flat box type mounting plate 05 is fixed, the frame portion 11 of the pan-car louver 01 is fitted into the mounting hole, and the mounting plate portion 12 is fixed to the mounting plate 05 with a screw 06 penetrating the ceiling 02.

Further, the heat insulating flexible duct (air passage B) 03 is widely used as an off-the-shelf product, and the end portion of the heat insulating flexible duct (air passage B) 03 is located between the upper opening 22 and the upper heat insulating cylinder portion 33. The air passage B and the adiabatic ventilation passage A are connected to each other.

Therefore, in the nozzle outlet structure, when the cold air C from the air conditioner passes through the flexible duct 03 and flows into the adiabatic ventilation passage A, the cold air C passes through the support frame 1 and the spherical shell of the pancar louver 01. Since it does not come into direct contact with the main body 2, the metal pancar louver 01 is not cooled, and even if it comes into contact with the air in the air-conditioned room, dew condensation does not occur.

Further, the cold air C that has passed through the adiabatic ventilation passage A is blown into the room from the adiabatic outlet 34a to realize cooling in the room, but the cold air is not always blown out in a rectified state at the outer peripheral edge of the adiabatic air outlet 34a. However, a part of the turbulent flow (counterflow) C1 may occur due to a collision with the indoor air, and even if the turbulent flow C1 comes into contact with the pancar louver 01, a heat insulating outlet 34a is formed in the contact range. Since it is within the range, it does not come into contact with the outer peripheral surface of the nozzle portion 24, the nozzle portion 24 is not cooled, and dew condensation does not occur.

Therefore, in this nozzle outlet structure, dew condensation does not occur at all due to the blowing of cold air C, and dew condensation does not drip into the room during cooling.

In the above embodiment, the ventilation passage forming member 3 is adopted for forming the heat insulating ventilation passage A and the heat insulating outlet 34a, but the present invention is not limited to the above means, and the spherical shell body itself is subjected to a predetermined treatment. You may give it. For example, on the entire inner peripheral surface of the spherical shell portion 21 and the nozzle portion 24, a heat insulating coating is applied, and a heat insulating treatment is applied to a predetermined range on the outer peripheral surface of the nozzle port, or a heat insulating cylinder is attached to the air passage end. The part may be connected to the pancar louver with a structure that blocks the cooling action by blowing air.

1 Bearing frame 11 Frame 12 Mounting plate 2 Spherical shell body 21 Spherical shell 22 Upper opening 23 Lower opening (nozzle opening)
24 Nozzle part 3 Ventilation path forming member 31 Metal cylinder 32 Insulation layer (insulation coating)
33 Upper heat insulating tube 34 Lower heat insulating tube 34a Insulated air outlet 35 Support 4 Resin screw 01 Pancar louver 02 Ceiling 03 Insulated flexible duct (blower)
04 Ceiling base rail 05 Mounting plate 06 Screw A Insulated ventilation passage B Blower passage C Cold air

Claims (2)

An air conditioner, a spherical shell body equipped with a nozzle-shaped air outlet, and a pancar louver made of a thin metal plate that is formed by a support frame that movably supports the spherical shell body and is attached to the ceiling of a room, and the air conditioner. In an air-conditioning system consisting of an air passage provided between the louver and the pan-car louver.
It is a ventilation path forming member made of a metal cylinder with a heat insulating coating on the inner peripheral surface, and forms a ventilation path having a heat insulating structure inside the spherical shell of the pancar louver .
The ventilation passage forming member is formed with a support portion made of a heat insulating material projecting from the outer peripheral surface of the intermediate portion and a lower heat insulating cylinder portion having a heat insulating coating on the outer peripheral surface of the lower opening portion of the lower heat insulating cylinder portion. The ventilation passage forming member is fitted and attached to the spherical shell body with the tip portion protruding from the outlet of the spherical shell body.
A nozzle outlet structure in an air conditioning system, characterized in that a ventilation path end portion having a heat insulating structure is connected to the ventilation path forming member . The nozzle blowing in the air conditioning system according to claim 1 , wherein the outer peripheral portion of the upper opening of the ventilation path forming member is coated with a heat insulating coating to form the upper heat insulating cylinder portion, and the air passage end portion is connected to the upper heat insulating cylinder portion. Exit structure.

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