JPH04155145A - Under-floor air outlet unit of air conditioner - Google Patents

Abstract

PURPOSE:To improve the temperature distribution in a residential area and obtain a comfortable air-conditioned atmosphere by arranging swirling air outlet sections around the outside of up-flow air outlet sections. CONSTITUTION:To reinforce an opening of an air outlet frame 1, concentric annular ribs 2a and radial ribs 2b, intersecting each other, are attached on the air outlet frame 1, and up-flow air outlet sections 3, through which air is blown upward, are provided in the center of the air outlet frame 1 which is partitioned by the concentric annular ribs 2a and the racial ribs 2b. Diagonal air deflectors 4 are attached on the radial ribs 2b outside the up-flow air outlet sections 3 so as to form swirling air outlet sections 5 by which air is spirally blown out. As the swirling air outlet sections 5 are arranged outside the up-flow air outlet sections 3, the range of upward flow is extended and the velocity of spiral air flow, which gives an discomfort to human bodies, can be quickly reduced. Therefore, heat stagnation and heat generation layers due to heat from human bodies and OA equipment are broken down and the temperature difference between upper and lower zones in a residential area is diminished, thus a comfortable air-conditioned space with less air flow sensuous to human bodies is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a blow-off unit for under-floor air conditioning used for air-conditioning offices, store buildings, and the like.

Conventional technology In recent years, in intelligent buildings where OA has progressed, raised floor systems are increasingly being adopted, where a space is formed under the floor and wiring, etc. can be routed freely. is used for air conditioning, and cool or warm air is supplied into the room from the outlet installed on the floor.
The adoption of the Fungoo floor air conditioning method for air conditioning is increasing. This type of underfloor air conditioning blowout unit 1
A conventional example will be explained based on FIGS. 6 to 8. 6th
As shown in the figure, in the floor blowing unit 20 used for conventional underfloor air conditioning, a blowing unit 21 is fixed by a support 22, and cool air or warm air from under the floor is supplied into the room from the blowing outlet 23. The configuration was as follows. As shown in FIG. 7, the air outlet grille 24 has a plurality of concentric ribs 25a and a plurality of radial ribs 25b for a flow path and a guide for blowing the airflow into the room, and converts the airflow into a swirling flow. A louver 26 for this purpose is attached diagonally to the radial rib 25b. Also,
As shown in FIG.
The structure was such that a was connected.

Problems to be Solved by the Invention However, in places where many people gather with office automation equipment, the cooling load increases due to local waste heat from office automation equipment and heat generated from the human body, causing heat and air to accumulate in the living room. A temperature stratification is formed. In this case, in the conventional configuration,
In order to suppress the discomfort felt by occupants due to the feeling of airflow blown out during cooling, each stage is designed to reduce the upward component of the blown airflow and increase the swirling flow component. Because the reach distance is not sufficient,
The warm air pool prevents sufficient convection in the vertical direction, and the difference in temperature between the upper and lower sides of the living area (range 1700 - above the floor) becomes large. To reduce this temperature difference between the top and bottom.

Since the blowing speed of cold air must be increased, it is impossible to suppress and control the discomfort of the occupants due to the blowing airflow, making it difficult to obtain a comfortable air-conditioned space.

The present invention solves the above-mentioned problems, and aims to provide an underfloor air conditioning blow-off unit that can improve the temperature distribution in the living area and provide a comfortable air-conditioned environment.

Means for Solving the Problems In order to achieve the above objects, the underfloor air conditioning blowout unit of the present invention first includes an upper airflow blowout that blows air upward to the blowout grille of the underfloor air conditioning blowout unit. and a swirling airflow blowout section equipped with a louver for blowing out the airflow as a swirling flow, and the swirling airflow blowout section is disposed outside of the upper airflow blowout section.

Second, the underfloor air conditioning blowout unit of the present invention has the following features:
A louver tilted in the range of 35 degrees to 50 degrees with respect to the horizontal plane is provided on a swirling airflow outlet that blows out the airflow of the outlet grille as a swirling flow.

Thirdly, the underfloor air conditioning blowout unit of the present invention has the following features:
The ratio of the spread angle of the louvers of the swirling airflow blow-off section that blows out the airflow as a swirling flow and the pitch angle of the louvers is 2/3 or less.

Fourthly, the underfloor air conditioning blowout unit of the present invention has the following features:
For the partition between the upward airflow blowout section that blows the airflow upward and the swirling airflow blowout section that blows out the airflow as a swirling flow, and for the flow paths and guides for blowing out each airflow into the room,
A plurality of concentric ribs and a plurality of radial ribs are provided so as to intersect with each other, and an outlet grill is provided in which the plurality of concentric ribs and the plurality of radial ribs are formed on the same plane. .

Function The Suita unit for underfloor air conditioning of the present invention has the above-described first configuration, and when cooling a living room where the load is locally high due to exhaust heat from OA type equipment, etc., the upper airflow is blown upward. By providing the swirling airflow blowing part outside the upper airflow blowing part, the airflow reaching the upper airflow can be extended and the airflow can be rotated. The airflow quickly reduces the airflow velocity that causes discomfort to the human body, which can break through warm air pools and temperature formation layers caused by heat from the 0AIII device and the human body, reduce the vertical temperature difference in the living area, and reduce the airflow to the human body. Provides a comfortable air-conditioned space with less flu.

In addition, with the second configuration, when cooling a room with a very high load, by increasing the louver angle, the upward component of the swirling airflow is increased, and the swirling airflow is blown upward, thereby reducing the
Type A equipment: More components of the upward airflow break through warm air pools and temperature formation layers due to heat from the human body, extending the reach of the airflow, reducing the difference in temperature above and below within the living area, and creating a comfortable air-conditioned space.

With the third configuration, when cooling a living room with a very high load, by setting the spread angle of the louver to 2/3 or less of the pitch angle of the louver, the opening when viewed from the projection plane of the outlet louver is reduced. As the area becomes wider, the upward airflow component that is not guided by the louvers and the swirling airflow component that is guided by the louvers are combined, resulting in a swirling flow that is blown upward, causing warm air pools due to heat from the human body in OA equipment. It is possible to increase the component of the upward airflow that breaks through the temperature formation layer, extend the reach of the airflow, reduce the difference in temperature between the upper and lower sides of the living area, and provide a comfortable air-conditioned space with less airflow sensation to the human body.

In addition, with the fourth configuration, when cooling a room with a very high load, the multiple concentric ribs and the multiple radial ribs are formed on the same plane, so that the radial ribs guide the airflow upward. OA type equipment blows out a swirling flow upward, which blows out an upward airflow that breaks through warm air pools and temperature formation layers caused by heat from the human body, extending the reach of the airflow and reducing the difference in temperature between the top and bottom in the living area. Moreover, a comfortable air-conditioned space with less air flow to the human body can be obtained.

EXAMPLE Hereinafter, a first example of the present invention will be described based on FIG. Note that the underfloor air conditioning blow-off unit is the same as the conventional example, so a description thereof will be omitted.

As shown in the figure, concentric ribs 2a and radial ribs 2b are connected to cross each other in order to reinforce the opening of the outlet grille l.

An upward airflow outlet 3 for blowing air upward is provided in the center of the outlet grille 1, which is partitioned by concentric ribs 2a and radial ribs 2b, and a louver 4 is provided diagonally on the outside of the outlet grille 1 with radial ribs. 2b is provided with a swirling airflow blow-off section 5 for swirling the airflow.

In the upward airflow blowout section 3, the airflow passes only through the space partitioned by the concentric ribs 2a and the radial ribs 2b, so
Airflow will now blow upward.

Further, in the swirling airflow blowing section 5, since the louver 4 is installed obliquely, the Suita airflow is blown out in a swirling manner by the louver.

By providing an upward airflow blowout section 3 that blows airflow upward, it is possible to create an upward airflow that breaks through warm air pools and temperature formation layers caused by heat from the human body of OA equipment. By providing the airflow blowing section 5 outside the upward airflow blowing section 3, the reachable distance of the airflow can be extended without giving a feeling of airflow.

Next, a second embodiment of the present invention will be described based on FIG. 2. FIG. 2 is a cross-sectional view of the swirling airflow outlet 6, in which the louver 7 for swirling the airflow is diagonally attached to the radial rib 8 (
θ-35 degrees or more).

According to our experiments, the louver angle and the updraft reach distance have the relationship shown in Figure 3. In other words, when the louver angle θ is 35 degrees or less, the upward airflow component is small and the air specific gravity of the blown cold air is greater than the air specific gravity of the warm air in the space being blown out, so a phenomenon occurs where the cold air stagnates near the floor, causing the upward airflow to reach Although the distance does not increase, when the louver angle θ exceeds 35 degrees, this temperature stratification is destroyed and the reach of the airflow increases.

As described above, by raising the louver angle θ to a range of 35 degrees to 50 degrees and increasing the upwelling component of the swirling airflow until the humidity stratification is destroyed, warm air pools due to the heat from the human body of OA type equipment and temperature can break through the cambium layer,
It can extend the reach of airflow.

Next, a third embodiment of the present invention will be described based on FIG. 4. Ratio α of the spread angle α of the louver 10 diagonally: 4 fl to the radial rib 9b and the pitch angle β of the louver
By setting /β to 2/3 or less, the outlet grille 11
A portion (angle β-α) 12 that is not covered by the louver 10 when viewed from the top surface is formed.

The swirling airflow blowing section 13 can blow a swirling flow upward into a portion that is not blocked by the louver 10 by combining the airflow component blown upward and the airflow component blown out as a swirling flow by the louver 10. . By blowing out the swirling flow upward, it is possible to break through warm air pools and temperature formation layers caused by heat from the human body in OA equipment, and it is possible to extend the reach of the airflow while suppressing the sensation of airflow to the human body.

Next, a fourth embodiment of the present invention will be described based on FIG. 5. Concentric ribs 14a and radial ribs 14b for reinforcing the opening intersect on the same plane and are joined.

By extending the radial ribs 14b compared to the past and making them on the same plane, the airflow passes through the louvers 15 installed diagonally and then travels through the radial ribs 14b, causing the airflow to flow upward, thereby preventing OA equipment from the human body. It is possible to emit an upward airflow that breaks through the warm air pools and temperature formation layers caused by the heat generated by the air flow, and to extend the reach of the airflow while suppressing the sensation of the airflow to the human body.

By configuring and operating as described above, it is possible to perform cooling using the floor blowing method, which was previously difficult to do when the load is extremely high, improve temperature distribution within the living area, and realize a comfortable air-conditioned environment.

Note that the above effects can be sufficiently achieved by any combination of the first to fourth means, for example, the first and third means, or the first, second, and third means.

Effects of the Invention As is clear from the above embodiments, according to the present invention, an upward air flow blowing section is provided in a floor blowing unit that incorporates a blower unit arranged on the floor surface of an underfloor air conditioner. A swirling airflow blowout section is installed outside the upward airflow blowout section to blow out airflow to break through warm air pools and temperature formation layers caused by heat from the human body of OA type equipment, and blow out the airflow in a swirling manner. By combining airflow and swirling flow, it is possible to extend the reach of the airflow without giving the impression of airflow, reduce the difference in temperature between the top and bottom of the living area, and create a comfortable air-conditioned environment.

In addition, by increasing the angle of the louvers attached to the outlet grille of the floor outlet unit of the underfloor air conditioner, which has a built-in blower unit placed on the floor, the upward component of the swirling airflow can be increased, making the swirling flow better than before. By blowing upward, it can break through the warm air pools and temperature formation layers caused by the heat from the human body of OA equipment, extend the reach of the airflow, reduce the difference in temperature above and below within the living area, and create a comfortable air-conditioned space. can.

In addition, by setting the spread angle of the louver attached to the outlet grill of the floor outlet unit with a built-in blower unit placed on the floor surface of the underfloor air conditioner to be 2/3y below the pitch angle of the louver, the outlet As the opening becomes wider when viewed from the projection plane of the louver, the upward airflow component not guided by the louver and the swirling airflow component guided by the louver are combined, resulting in an increase in the upward airflow component and a swirling airflow. By blowing upward, OA type equipment breaks through the warm air pools and temperature formation layers caused by the heat from the human body, extends the reach of the airflow, and reduces the vertical temperature difference in the living area (while suppressing the feeling of airflow against the human body). , it is possible to realize a comfortable air-conditioned space.

In addition, by forming the multiple concentric ribs and multiple radial ribs of the floor blower unit with a built-in blower unit placed on the floor surface of the underfloor air conditioner so that they are on the same plane, the airflow is particularly improved by the radial ribs. It is guided upward and blows out a swirling flow upward, which breaks through warm air pools and temperature formation layers caused by heat from the OA type equipment's human body, extends the reach of the airflow, and reduces the difference in temperature above and below within the living area. It is possible to create a comfortable air-conditioned space while suppressing the feeling of air flow to the human body.

[Brief explanation of drawings]

FIG. 1 is a top view of the outlet grill of an underfloor air conditioning outlet unit showing a first embodiment of the present invention, and FIG.
FIG. 3 is a graph of the louver angle and airflow reach distance, and FIG. 4 is a cross-sectional view of the outlet grill of the underfloor air conditioning outlet unit showing the third embodiment. Top view of the air outlet grill, No. 5
The figure is a sectional view of the outlet grill of the underfloor air conditioning outlet unit showing the fourth embodiment, FIG. 6 is a sectional view of the conventional underfloor air conditioning outlet unit, and FIG. 7 is a sectional view of the underfloor air conditioning outlet unit. Top view of outlet grill, No. 8
The figure is a sectional view of the outlet grille of the underfloor air conditioning outlet unit. 1.11...Outlet grill, 2a, 14a, 2
5a... Concentric ribs, 2b, 8b, 9b, 1
4b, 25b...radial rib, 3...
Upward airflow outlet, 4,7.10.15.26...
...Louvre, 5.6.13...Blowout section for swirling air flow. Name of agent: Patent attorney Akira Okaji and 2 others i-J missing entry 7 ril 2α--Issumi Kazue □・1b 4-1(-hi- Figure 3 r9 (cliff) 9b--o( ke11rigo f3 --- Dimensions are the same and low 1 and 1 and 2.

Claims (4)

[Claims] (1) The indoor air outlet of the underfloor air conditioning outlet unit is equipped with an upward airflow outlet that blows out the airflow upward, and a swirling airflow outlet that is equipped with a louver that blows out the airflow in a swirling manner. . An underfloor air conditioning blow-off unit, wherein an air outlet grille in which the swirling air flow blow-off section is disposed is provided on the outside of the upward air flow blow-off section. (2) The outlet for underfloor air conditioning according to claim 1, further comprising an outlet grille having a louver tilted in the range of 35 degrees to 50 degrees with respect to a horizontal plane attached to the outlet portion for swirling airflow that blows out the airflow as a swirling flow. unit. (3) In the swirling airflow outlet that blows out the airflow as a swirling flow,
The blow-off unit for underfloor air conditioning according to claim 1, further comprising a blow-out grill configured such that the ratio of the spread angle of the louvers to the pitch angle of the louvers is 2/3 or less. (4) A partition between an upward airflow blowout section that blows airflow upwards and a swirling airflow blowout section that blows out airflow as a swirling flow, flow paths and guides for blowing each airflow into the room, and a plurality of The underfloor air conditioner according to claim 1, further comprising an outlet grille having concentric ribs and a plurality of radial ribs arranged to intersect with each other, the plurality of concentric ribs and the plurality of radial ribs being on the same plane. Blowout unit.