JPH0289937A - Floor delivery type air conditioning device - Google Patents

Abstract

PURPOSE:To successfuly cope with the imbalance in the total air delivery rate between the air conditioner and individual fans as well as the needs for adding or remodeling the air outlets by disposing a mixing unit ahead of the fan, and providing said mixing unit with an inlet which is directly connected to the return air inlet 12 and an inlet which is open to the under-the-floor space via an air flow regulating damper. CONSTITUTION:In an air conditioning device which utilizes under-the-floor space as a feed air duct for air conditioning and has air outlets in the floor, the conditioned air from an air conditioner 4 is discharged into the space between the floor slab 1 and the floor panel 2, making use of said space as a feed air duct 3a. A mixing unit 15 is serially connected to the inlet side 8 of a fan 7. There are two inlets for the mixing unit 15, one of which is connected to the return air inlet 12 via a duct and the other is open to the feed air duct 3a via a damper 16 capable of opening or closing and adjusting the opening angle. The damper 16 is interlocked with the fan 7, and is fully closed when the fan 7 stops. Since there is no need for a main feed air duct, air outlets in the floor can be freely added, and the variable air flow regulation becomes possible by adjusting the opening of the damper.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a floor-blowing type air conditioner that uses a raised floor or a floating floor or the like and uses the underfloor area as a supply path for air conditioning.

(Prior Art) FIG. 2 shows an example of a conventional air conditioner, in which an air supply path 3 is formed between a floor slab 1 and a floor panel 2.

The air supply path 3 is for sending conditioned air from the bottom blowing air conditioner 4 into the room 5, and is piped from the air outlet of the bottom blowing air conditioner 4 under the floor panel 2. A discharge port 6 is arranged centrally.

Further, a blower fan 7 is disposed under the floor panel 2, and its suction port 8 is open under the floor panel 2, and its discharge port 9 is directly connected to an air outlet 10 provided in the floor panel 2 through a duct 11. are doing.

Further, the floor panel 2 is provided with a return air suction port 12 for making the air in the room 5 merge with the supply air from the air supply path 3. On the other hand, an intake port 14 is provided on the ceiling 13 to return air from the room 5 to the downward blowing air conditioner 4.

The warm indoor air sucked in from the return air suction port 12 of the floor panel 2 and the cold supply air from the downward air conditioner 4 are mixed in the ventilation fan 7, and the temperature is lowered to some extent than the temperature of the supply air from the supply air path 3. Air is supplied into the room 5 through the air outlet 10 by increasing the air flow rate.

When cold air is supplied from the surface of the floor panel 2, if it is blown out from the ceiling 13 at a low temperature (for example, 16°C), the feet will be too cold, so the air from the room 5 and the air from the air supply path 3 are mixed. That's what I'm doing.

(Problems to be Solved by the Invention) In other words, in the case of a floor blowing type, the blowing temperature is increased, so the difference between the retan air temperature and the blowing air temperature is small, and the air flow rate of a conditioner such as a bottom blowing air conditioner is reduced. It suffers from growing drawbacks. Therefore, in the conventional example described above, the floor panel 2
An air suction port 12 is provided to connect the air conditioner 4 with a blower fan 7.
By mixing the air with the supplied air, the temperature is raised and at the same time, the blower fan 7 blows out the air, making it possible to reduce the amount of air processed by the air conditioner 4.

However, in order to keep the chamber temperature constant in the double floor, it is necessary to extend the outlet 6 of the air supply path 3 to the vicinity of the inlet 8 of each blower fan 7, which poses an obstacle to laying cables under the back of the floor panel 2. Therefore, it was necessary to make the depth of the double floor deeper.

In addition, the total air volume of the blower fan 7 is greater than the air volume of the downward blowing air conditioner 4 to ensure the suction air volume from the return air suction port 12, but the blower fan 7 is stopped by starting and stopping individually. When the number of air conditioners increases, the air volume of the air conditioner 4 becomes larger than the total air volume of the fans 7, and as a result, the return air intake port 1
This has the disadvantage that excess air in the air supply path 3 flows backward from the air supply path 2.

Furthermore, since the amount of supplied air is limited by the air supply path 3, flexibility in adding or changing the air outlet 10 is not effective.

The present invention has been made in view of the above circumstances, and its purpose is to eliminate the disadvantages of the conventional art, which is not affected by the imbalance between the total air volume of the air conditioner and the individual blower fans or by the addition or modification of the air outlet. To provide a floor-type air conditioner.

(Means for Solving the Problems) In order to achieve the above object, the floor-type air conditioner of the present invention has an air-conditioning air conditioner with an air-conditioning air supply path under the floor and an outlet on the floor. In the device, a return air suction port is provided at or near the floor surface, a mixer and a blower fan are arranged in series in the air supply path, and a discharge port of the blower fan is connected to the blower port. One of the inlets of the mixer was connected to the return air inlet, and the other faced into the air supply path via an air volume adjustment damper.

Further, in order to prevent air leakage when the blower fan is stopped, the air volume adjusting damper is such that its [ ] is linked to the blower fan, and is fully closed when the fan is stopped. It is.

(Function) A mixer is installed in front of the blower fan, and this mixer has an inlet directly connected to the return air inlet 12 and an inlet opened under the floor via an air volume adjustment damper, so that the indoor air At the same time, the underfloor space itself can be used as an air supply path without having to specially form and install an air supply path.

Furthermore, by selecting the aperture ratio of the inlet of the mixer, it is possible to adjust the mixing ratio of indoor air and air supplied from the air conditioner.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which the same components and devices as in the conventional example are designated by the same reference numerals.

Conditioned air from an air conditioner 4 is discharged and supplied to the space between the floor slab 1 and the floor panel 2, and this underfloor space itself serves as an air supply path 3a.

A mixer 15 is arranged in series upstream of the blower fan 7, that is, on the side of the suction port 8.

The mixer 15 has two suction ports, one of which is directly connected to the return air suction port 12 by a duct, and the other opens into the air supply path 3a via a damper 16 whose opening/closing and opening angle can be adjusted.

The damper 16 is linked to the blower fan 7, and is fully closed when the blower fan 7 stops.

The above-mentioned configuration is not limited to the floor type, but in the case of the ceiling type, the attic space is used as an air supply path for the mixer,
It is also effective to configure a blower fan.

(Effects) As explained above in detail, according to the floor blowing type air conditioner of the present invention, the return air suction port is directly connected to the mixer, and only the air supplied from the air conditioner is supplied from the underfloor air conditioner. Since the air is drawn directly from the air supply path, the room air and the air supplied from the air conditioner are mixed only inside the mixer. Therefore, the temperature of the air supply path can be kept constant, so there is no need to arrange a special air supply duct, etc., and the underfloor space can be widely used, and it is not limited by the cross-sectional area of the duct. ,
You can freely add air outlets on the floor.

Furthermore, by adjusting the opening degree of the damper, the amount of air supplied from the air conditioner can be changed, so variable air volume control is also possible.

Furthermore, if the blower fan and damper are linked and the damper is closed when the fan is stopped, the air supply pressure from the air conditioner returns and is cut off from the air intake and air outlets, causing air to flow from these air intakes and air outlets. It has the effect of completely preventing air leakage.

[Brief explanation of drawings]

FIG. 1 is a side view showing a floor blowing type air conditioner according to the present invention, and FIG. 2 is a side view illustrating a conventional floor blowing type air conditioner. 1...Floor slab 3...Air supply path 5...Room 7...Blower fan 9...Discharge port 11... Duct 13... Ceiling 15... Mixer 2... Floor panel 4... Bottom air conditioner 6... Outlet 8... Suction port 10...Blowout port 12...Return air suction port 14...Intake port 16...Dunbar

Claims (2)

[Claims] (1) In an air conditioner that has an air conditioning air supply path under the floor and an outlet on the floor, a return air inlet is provided on or near the floor, and a mixer is installed in the air supply path. A blower fan is arranged in series, and the discharge port of the blower fan is connected to the blower port, and one of the suction ports of the mixer is connected to the return air suction port, and the other is connected to the return air suction port through an air volume adjustment damper. A floor-blowing air conditioner characterized by facing into the air supply path. (2) The floor blowing type according to claim 1, wherein the air volume adjusting damper is configured to open and close in conjunction with the blower fan, and is fully closed when the fan stops. air conditioner.