JP7018009B2 - Underfloor air conditioning system - Google Patents

Description

In the present invention, the conditioned air generated by the air-conditioning device is supplied to the underfloor duct path formed by partitioning the underfloor space, and the conditioned air that has passed through the underfloor duct path is supplied to the room from the floor blowout portion provided on the floor. Regarding the underfloor type air conditioning system that blows out into the space.

Conventionally, the conditioned air generated by the air-conditioning device is supplied to the underfloor duct path formed by partitioning the underfloor space, and the conditioned air that has passed through the underfloor duct path is sent from the floor blowout portion provided on the floor to the indoor space. An underfloor type air conditioning system that blows out is known (see Patent Document 1). In the air conditioning system described in Patent Document 1, a plurality of underfloor duct paths are provided, and the plurality of underfloor duct paths are arranged side by side in parallel with each other.

Japanese Unexamined Patent Publication No. 10-054576

However, in the air-conditioning system described in Patent Document 1, the flow directions of the conditioned air in each of the plurality of underfloor duct paths are parallel flows in all the underfloor duct paths. Therefore, in the entire underfloor space, the temperature gradient formed along the flow direction of the conditioned air is generated along the same direction in each underfloor duct path, so that the temperature unevenness of the entire floor surface occurs. Furthermore, since the floor outlets located on the downstream side of each underfloor duct path are arranged only on one end side of the floor, the conditioned air is biased from these floor outlets to the interior space. There was a problem that the entire interior space could not be uniformly air-conditioned because it was blown out.
In view of this situation, a main object of the present invention is to provide an underfloor type air conditioning system capable of uniformly air-conditioning the entire interior space.

The first characteristic configuration of the present invention is to supply the conditioned air generated by the air-conditioning device to the underfloor duct path formed by partitioning the underfloor space, and to provide the conditioned air passing through the underfloor duct path on the floor surface. It is an underfloor type air conditioning system that blows out from the surface outlet to the indoor space.
A plurality of the underfloor duct paths are provided, and the plurality of underfloor duct paths are arranged in parallel with each other.
The flow directions of the conditioned air in each of the plurality of underfloor duct paths are set to be countercurrent between the adjacent underfloor duct paths .
Return chambers into which conditioned air that has passed through the underfloor duct paths flow in are arranged on both ends in the longitudinal direction of the plurality of underfloor duct paths.
The air conditioner is arranged in the return chamber, and the air conditioner takes in return air from the return chamber to generate air conditioning air .

According to this configuration, since the flow directions of the conditioned air in each of the plurality of underfloor duct paths are opposed to each other between the adjacent underfloor duct paths, they are formed along the flow direction of the conditioned air in the underfloor duct paths. The temperature gradients to be generated will be alternately inverted and arranged in the entire underfloor space. As a result, the temperature unevenness of the entire floor surface is suppressed, and the conditioned air having a relatively uniform temperature can be blown out from the floor surface blowing portion over the entire interior space.
Therefore, according to the present invention, it is possible to provide an underfloor type air conditioning system capable of uniformly air-conditioning the entire interior space.

Further, according to this configuration, the return chambers arranged on both ends in the longitudinal direction of the plurality of underfloor duct paths pass through the respective underfloor duct paths without being blown out from the floor blowout portion into the indoor space. Since the conditioned air can be flowed in, a sufficient amount of conditioned air is allowed to pass through the underfloor duct path while limiting the amount of conditioned air blown from the floor outlet to the indoor space to the floor temperature. Can be adjusted to an appropriate temperature. Moreover, the air conditioner arranged in the return chamber does not require or simplifies a duct or the like for taking in the return air from the return chamber, and also takes in the air conditioning air flowing into the return chamber as the return air to have a relatively low load. Can generate air-conditioned air.

The second characteristic configuration of the present invention is that the air conditioner is individually arranged for each of the plurality of underfloor duct paths.

According to this configuration, in each return chamber arranged on both ends in the longitudinal direction of the plurality of underfloor duct paths, the entire area is along the parallel direction (width direction of the underfloor duct paths) of the plurality of underfloor duct paths. Since the conditioned air that has passed through the underfloor duct paths flows in substantially uniformly, the air temperature of the entire return chamber is maintained substantially uniformly. Therefore, in such a return chamber, since the air conditioning device is individually arranged for each of the plurality of underfloor duct paths, a duct for supplying air-conditioned air from the air conditioning device to the underfloor duct path is unnecessary or simplified. In addition to being able to, in each air conditioner, return air of substantially the same temperature can be taken in from the return chamber to generate air conditioner air having a substantially uniform temperature and supplied to each underfloor duct path.

In the third characteristic configuration of the present invention, in each of the plurality of underfloor duct paths, an conditioned air inflow portion to which conditioned air is supplied from the air conditioner is provided on one end side, and the floor surface on the other end side is provided. The point is that the floor blowing portion is provided.

According to this configuration, in each underfloor duct path, the floor on the other end side located on the downstream side in the flow direction of the conditioned air from the air inflow portion on the one end side located on the upstream side along the flow direction of the conditioned air. Air-conditioned air can pass through the entire length of the surface blowout portion. Therefore, the entire floor surface can be maintained at an appropriate temperature along the longitudinal direction of the underfloor duct path. Moreover, since the flow direction of the conditioned air in each underfloor duct path is set to be a countercurrent flow between the adjacent underfloor duct paths, the floor blowout located on the downstream side of each underfloor duct path. The portions are arranged substantially uniformly on both ends of the floor surface. As a result, the entire interior space can be air-conditioned more uniformly by blowing air-conditioned air into the interior space from the floor surface outlets that are substantially uniformly distributed.

Schematic block diagram of the underfloor type air conditioning system of this embodiment Longitudinal section along the air flow direction of the first underfloor duct path Longitudinal section along the air flow direction of the second underfloor duct path

An embodiment of the present invention will be described with reference to the drawings.
In the underfloor type air-conditioning system of the present embodiment (hereinafter, referred to as “the main air-conditioning system”), as shown in FIG. 1, the air-conditioned air SA generated by the air-conditioning device 4 is passed through the underfloor space 2 and the air-conditioned air SA is passed through the underfloor space 2. It is configured as an air-conditioning system that blows out the conditioned air SA after the flow from the floor surface outlet 1a (an example of the floor surface outlet portion) provided on the floor surface 1 to the indoor space 10 (see FIGS. 2 and 3).

As shown in FIGS. 2 and 3, the underfloor space 2 is formed as a space partitioned from the indoor space 10 by the floor panels 20 constituting the floor surface 1 laid apart above the floor slab 25. There is.
The air conditioner 4 is configured as a package type air conditioner that cools or heats the taken-in return air RA to a predetermined set air conditioning temperature and blows out cold air or hot air after cooling or heating to the set air conditioning temperature as air conditioning air SA. ing. In the present embodiment, the air conditioner 4 is configured as a package type air conditioner, but a fan coil unit or another type of air conditioner can also be used.

As shown in FIG. 1, in the underfloor space 2, a plurality of underfloor duct paths 3 formed by partitioning the underfloor space 2 with a vertical partition plate or the like are arranged side by side in parallel with each other. The flow directions of the conditioned air SA in each of the plurality of underfloor duct paths 3 are set to be countercurrent between the adjacent underfloor duct paths 3.
That is, the first underfloor duct path 3A through which the conditioned air SA flows to the right in FIG. 1 and the second underfloor duct path 3B through which the conditioned air SA flows to the left in FIG. 1 are shown in FIG. They are arranged side by side alternately along the vertical direction of.

As shown in FIG. 2, on the left end side of each of the first underfloor duct paths 3A, an inflow port 3a (air-conditioned air inflow section) into which air-conditioned air SA cooled or heated to a set air-conditioning temperature flows in from the air-conditioning device 4 An example) is open. On the other hand, an outlet 3b for letting the conditioned air SA flow out is opened on the right end side of each of the first underfloor duct paths 3A.
Therefore, in the first underfloor duct path 3A, the cold heat or hot heat possessed by the conditioned air SA flowing to the right is gradually taken away by the floor panel 20 or the like, so that the left end side becomes a temperature near the set conditioned air conditioning temperature and the right end side becomes room temperature. A temperature gradient will be formed so that the temperature is close to the temperature.

As shown in FIG. 3, on the right end side of each of the second underfloor duct paths 3B, an inflow port 3a (an example of an air-conditioned air inflow section) into which air-conditioned air SA cooled or heated to a set air-conditioned temperature flows in from the outside. ) Is open. On the other hand, an outlet 3b for letting the conditioned air SA flow out is opened on the left end side of each of the second underfloor duct paths 3B.
Therefore, in the second underfloor duct path 3B, the cold heat or hot heat possessed by the conditioned air SA flowing to the left is gradually taken away by the floor panel 20 or the like, so that the right end side becomes a temperature near the set conditioned air conditioning temperature and the left end side becomes room temperature. A temperature gradient will be formed so that the temperature is close to the temperature.

With the above configuration, in this air conditioning system, in the entire underfloor space 2, the temperature gradients formed by the alternately arranged first underfloor duct paths 3A and the second underfloor duct paths 3B are shown in FIG. They will be alternately inverted and arranged along the vertical direction. As a result, the temperature unevenness of the entire floor surface 1 is suppressed, and the conditioned air SA having a relatively uniform temperature over the entire interior space 10 is blown out from the floor surface outlet 1a.

As shown in FIG. 1, air conditioning that has passed through the underfloor duct paths 3 on both ends in the longitudinal direction (left-right direction in FIG. 1) of a plurality of underfloor duct paths 3 juxtaposed in the vertical direction in FIG. Return chambers 5 into which air SA flows in as return air RA are arranged respectively. That is, on the left end side of the plurality of underfloor duct paths 3 in FIG. 1, a first return chamber 5A extending in the vertical direction is formed in a state adjacent to the entire left end of the plurality of underfloor duct paths 3. On the other hand, on the right end side of the plurality of underfloor duct paths 3 in FIG. 1, a second return chamber 5B extending in the vertical direction is formed in a state adjacent to the entire right end of the plurality of underfloor duct paths 3.

Further, an air conditioner 4 is arranged in each return chamber 5, and the air conditioner 4 is configured to take in the return air RA from the return chamber 5 and generate air conditioning air SA.
That is, in the first return chamber 5A, as the air conditioner 4, a plurality of first air conditioners 4A for supplying air conditioning air SA to each first underfloor duct path 3A are individually provided for each of the first underfloor duct paths 3A. Is located in. The first air conditioner 4A is configured to take in the return air RA from the first return chamber 5A in which the first air conditioner 4A is arranged.
Similarly, in the second return chamber 5B, as the air conditioner 4, a plurality of second air conditioners 4B for supplying air conditioning air SA to each of the second underfloor duct paths 3B are provided for each of the second underfloor duct paths 3B. They are arranged individually. The second air conditioner 4B is configured to take in the return air RA from the second return chamber 5B in which the second air conditioner 4B is arranged.
Further, as shown in FIGS. 2 and 3, each of the return chambers 5A and 5B has a box shape protruding above the floor surface 1 in order to secure a space for installing the air conditioner 4 inside. On the wall surface such as the top surface provided at the boundary with the indoor space 10 in each of the return chambers 5A and 5B, the return air for taking in the return air RA from the indoor space 10 is formed. An intake port 5a is provided.

With the above configuration, in the first underfloor duct path 3A, as shown in FIG. 2, conditioned air from the first air conditioner 4A individually arranged in the first return chamber 5A on the left end side via the inflow port 3a. SA is supplied. Then, the conditioned air SA that has passed through the first underfloor duct path 3A without flowing out from the floor surface outlet 1a to the indoor space 10 will flow out to the second return chamber 5B on the right end side via the outlet 3b.
Similarly, in the second underfloor duct path 3B, as shown in FIG. 3, the conditioned air SA is supplied from the second air conditioner 4B individually arranged in the second return chamber 5B on the right end side via the inflow port 3a. To. Then, the conditioned air SA that has passed through the second underfloor duct path 3B without flowing out from the floor surface outlet 1a to the indoor space 10 will flow out to the second return chamber 5B on the left end side via the outlet 3b.

Further, in each of the underfloor duct paths 3A and 3B, a part of the supplied conditioned air SA is blown out from the floor surface outlet 1a into the indoor space 10, and the rest of the conditioned air SA is the return chambers 5A and 5B, respectively. Will be leaked to. Therefore, the temperature of the floor surface 1 can be adjusted to an appropriate temperature by passing a sufficient amount of the conditioned air SA while limiting the amount of the conditioned air SA blown out from the floor surface outlet 1a to the indoor space 10. become. Moreover, the air conditioners 4A and 4B arranged in the return chambers 5A and 5B do not require a duct or the like for taking in the return air RA from the return chambers 5A and 5B in which the air conditioners 4A and 4B are arranged. Therefore, the conditioned air SA flowing into the return chambers 5A and 5B can be taken in as the return air RA to generate the conditioned air SA with a relatively low load.

Further, in each of the return chambers 5A and 5B, conditioned air is provided from the respective underfloor duct paths 3A and 3B over the entire area along the parallel direction (vertical direction in FIG. 1) of the plurality of underfloor duct paths 3A and 3B. The outflow outlets 3b are arranged substantially evenly, and the conditioned air SA flows in substantially uniformly from the respective outlets 3b. Then, the air temperature of the entire return chambers 5A and 5B is kept substantially uniform. Therefore, since the individual air conditioners 4A and 4B of the underfloor duct paths 3A and 3B are arranged in the return chambers 5A and 5B, the underfloor duct paths 3A and 3B are arranged from the air conditioners 4A and 4B, respectively. There is no need for a duct for supplying air-conditioned air SA. Therefore, in each of the air-conditioning devices 4A and 4B, the return air RA having substantially the same temperature can be taken in from the return chambers 5A and 5B to generate the air-conditioned air SA having a substantially uniform temperature and can be supplied to the respective underfloor duct paths 3A and 3B. become.

In each of the underfloor duct paths 3A and 3B, as shown in FIG. 1, the floor surface outlet 1a is located on the floor surface 1 on the other end side opposite to the one end side where the inflow port 3a into which the conditioned air SA flows is arranged. It is provided. That is, in the first underfloor duct path 3A provided with the inflow port 3a on the left end side, as shown in FIG. 2, the floor surface outlet 1a is provided on the floor surface 1 in the vicinity of the outflow port 3b on the right end side. Similarly, in the second underfloor duct path 3B in which the inflow port 3a is provided on the right end side, the floor surface outlet 1a is provided on the floor surface 1 in the vicinity of the outflow port 3b on the left end side, as shown in FIG. ..

With such a configuration, the conditioned air SA passes through the underfloor duct paths 3A and 3B over substantially the entire length from the inflow port 3a to the floor surface outlet 1a. Therefore, the entire floor surface 1 is maintained at an appropriate temperature along the longitudinal direction of the underfloor duct paths 3A and 3B. Moreover, the flow direction of the conditioned air SA in each of the underfloor duct paths 3A and 3B becomes a countercurrent flow between the adjacent underfloor duct paths 3A and 3B. From this, the floor surface outlets 1a located on the downstream side of the underfloor duct paths 3A and 3B are arranged substantially uniformly on both ends of the floor surface 1. Therefore, in the indoor space 10, the conditioned air SA is blown out from the floor surface outlets 1a which are substantially uniformly distributed, and the conditioned air is more uniformly conditioned.

[Another Embodiment]
Other embodiments of the present invention will be described. It should be noted that the configurations of the respective embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, return chambers 5A and 5B into which the conditioned air SA that has passed through the plurality of underfloor duct paths 3A and 3B flow in are provided on both ends of the plurality of underfloor duct paths 3A and 3B. However, the presence / absence and shape of the return chambers 5A and 5B can be appropriately changed. For example, the return chambers 5A and 5B may be omitted, and the air-conditioned air SA that has passed through the underfloor duct paths 3A and 3B may be directly introduced into the adjacent air-conditioning device 4 as the return air RA.

(2) In the above embodiment, the air conditioner 4 is individually arranged for each of the plurality of underfloor duct paths 3A and 3B, but one air conditioner 4 is used for air conditioning for two or more underfloor duct paths 3A and 3B. It may be configured to supply air SA.

(3) In the above embodiment, in each of the plurality of underfloor duct paths 3A and 3B, the floor surface outlet 1a is provided on the floor surface 1 near the outlet 3b on the opposite side of the inlet 3a. The installation position and the number of outlets 1a can be changed as appropriate. For example, a plurality of floor surface outlets 1a can be distributed and arranged over the entire underfloor duct paths 3A and 3B.

1 Floor surface 1a Floor surface outlet (floor surface outlet)
2 Underfloor space 3 Underfloor duct route 3A 1st underfloor duct route (underfloor duct route)
3B 2nd underfloor duct route (underfloor duct route)
3a Inflow port (air-conditioned air inflow section)
4 Air conditioner 4A 1st air conditioner (air conditioner)
4B 2nd air conditioner (air conditioner)
5 Return chamber 5A 1st return chamber (return chamber)
5B 2nd return chamber (return chamber)
10 Interior space RA Return air SA Air-conditioned air

Claims (3)

An underfloor that supplies conditioned air generated by an air-conditioning device to the underfloor duct path formed by partitioning the underfloor space and blows the conditioned air that has passed through the underfloor duct path into the indoor space from the floor blowout portion provided on the floor. It ’s a floor-type air conditioning system.
A plurality of the underfloor duct paths are provided, and the plurality of underfloor duct paths are arranged in parallel with each other.
The flow directions of the conditioned air in each of the plurality of underfloor duct paths are set to be countercurrent between the adjacent underfloor duct paths .
Return chambers into which conditioned air that has passed through the underfloor duct paths flow in are arranged on both ends in the longitudinal direction of the plurality of underfloor duct paths.
An underfloor type air-conditioning system in which the air-conditioning device is arranged in the return chamber, and the air-conditioning device takes in return air from the return chamber to generate air-conditioned air . The underfloor type air conditioning system according to claim 1 , wherein the air conditioner is individually arranged for each of the plurality of underfloor duct paths. In each of the plurality of underfloor duct paths, an conditioned air inflow portion to which conditioned air is supplied from the air conditioner is provided on one end side, and the floor blowout portion is provided on the floor surface on the other end side. The underfloor type air conditioning system according to claim 1 or 2 .

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