JP4992045B2 - Full floor blowout air conditioning system - Google Patents

Description

  The present invention lays a double floor in a building such as an office building, and in the air conditioning system that blows air-conditioned air from the double floor to the room, dissipates the heat stored in the latent heat storage material during heat radiation operation such as daytime, The present invention relates to a full-floor floor air-conditioning system for supplying air into a room through a double-floor outlet.

  Conventionally, a so-called OA floor in which a double floor is constructed on a floor slab of a building and wiring for OA equipment is accommodated in the double floor is widely adopted, and air-conditioning air is blown into the room from the entire surface of the double floor. Full-floor blowing air conditioning system is beginning to be adopted.

  In addition, in this method, conventionally, a latent heat storage material is disposed on the lower surface of the double floor, and is stored in the latent heat storage material during heat storage operation such as at night, and is stored in the latent heat storage material during heat dissipation operation such as during the daytime. Proposals have been made to dissipate heat and supply air into the room through a double-floor outlet. According to such a heat storage air conditioner, it is possible to store heat by using inexpensive nighttime electric power and use it for office hours in the daytime.

For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2003-185373) discloses a double floor that is laid on a floor slab and has a large number of outlet holes, and an air supply chamber that is formed between the floor slab and the double floor. A latent heat storage material, comprising: a latent heat storage material disposed on the lower surface of the double floor and capable of directly exchanging heat with air; and an air conditioner connected to an air supply chamber. An entire floor blowing air conditioning system using a material is disclosed.
JP 2003-185373 A

  However, in the full-surface floor blowing air conditioning system using the latent heat storage material described in Patent Document 1, the granular latent heat storage material is installed in a double floor. Although such a granular latent heat storage material has a large surface area and excellent heat exchange performance, there is a problem that the manufacturing cost of the heat storage material itself increases.

  In other words, the conventional full-floor air-conditioning system has good heat storage performance and heat dissipation performance, but it is difficult to install at low cost and the total aspect including construction is not balanced. Absent.

This invention solves the said subject, The invention which concerns on Claim 1 is the floor slab, the floor panel which was provided on this floor slab, and the blowing hole was formed, this floor slab, and this floor panel A plate-like latent heat storage material that is arranged between the thick-walled portion and a thin-walled portion formed on the periphery of the thick-walled portion and can directly exchange heat with air, and the plate-like latent heat storage material A latent heat storage material support for supporting the plate-like latent heat storage material, and a suspension hole is provided at both ends of the thin portion of the plate-like latent heat storage material, and the plate-like latent heat storage material has the suspension hole. When the suspension shaft is inserted for use , the plate-like thick wall portion of the plate-like latent heat storage material is perpendicular to the floor slab by the latent heat storage material support. It is a full-floor blow-out air conditioning system characterized by being suspended from.

  According to the entire floor blowing air conditioning system of the present invention, the manufacturing cost of the heat storage material itself can be suppressed, and it is possible to construct the entire floor blowing air conditioning system at low cost while maintaining the heat storage performance and the heat dissipation performance. Become.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a double floor structure of an entire floor blowing air conditioning system according to an embodiment of the present invention, and FIG. 2 is a plan view of a floor panel alone used in the entire floor blowing air conditioning system according to the embodiment of the present invention. FIG. 3 is a perspective view of a latent heat storage material support used in the full floor blowout air conditioning system according to the embodiment of the present invention.

  1 to 3, 1 is a floor slab, 2 is a column, 2a is a base part, 2b is a lower pillar part, 2c is an upper pillar part, 2d is a support part, 3 is a floor panel, 3a is a groove, 3b is blown out Holes 4, an air supply chamber 10, a plate-like latent heat storage material, 15 a latent heat storage material support, 16 a base portion, 17 a strut portion, and 18 a suspension shaft.

  A support column 2 is erected on the floor slab 1, and a number of floor panels 3 are laid on the support column 2. With this configuration, an air supply chamber 4 is formed below the floor panel 3, that is, in the double floor. . In the floor panel 3, a plurality of air supply diffusion grooves 3a are formed, and a plurality of blowout holes 3b are formed in the grooves 3a. Furthermore, fitting holes 3 c are formed at the four corners of the floor panel 3.

  The column 2 supporting the floor panel 3 includes a base portion 2a fixed to the floor slab 1 with an adhesive, a lower column portion 2b and an upper column portion 2c erected on the base portion 2a, and a flange-shaped support portion. 2d. The floor panel 3 is supported by the support portion 2 d of the support 2.

  The plate-like latent heat storage material 10 includes a base portion 16, a support column portion 17 standing on the base portion 16, and a suspension shaft 18 passed between the support column portion 17. A plurality of plate-like latent heat storage materials 10 can be suspended directly below the floor panel 3 by the shaft 18.

  The plate-like latent heat storage material 10 is an office building with a typical cooling load, the height is 50 to 100 mm, and it is installed at the height (150 mm to 200 mm) of a normal OA floor (double floor). However, a sufficient wiring space and air-conditioning space can be secured below the plate-like latent heat storage material 10.

  Further, the number of plate-like latent heat storage materials 10 suspended on one unit of latent heat storage material support 15 shown in FIG. 3 is set to 4 to 13 in accordance with the air conditioning load (in the example shown, 11 sheets). ) Adjust the amount of heat storage. The unit of latent heat storage material support 15 shown in FIG. 3 has a shape substantially similar to the size of the floor panel 3 (500 mm × 500 mm) when viewed from above, so that it can be used during wiring work, construction, etc. Workability can be increased. With such a configuration, the entire floor blowout air conditioning system of the present invention can improve the heat storage performance and the heat dissipation performance while maintaining the function as the OA floor, and can realize an inexpensive construction.

  Next, the plate-like latent heat storage material 10 used in the entire floor blowing air conditioning system of the present invention will be described. FIG. 4 is a diagram showing a plate-like latent heat storage material used in the full-floor blowing air conditioning system according to the embodiment of the present invention. FIG. 4A is a view of the plate-like latent heat storage material 10 as viewed from the side, and FIG. 4B is a view of the plate-like latent heat storage material 10 as viewed from above. In FIG. 4, 11 is a thin part, 12 is a thick part, and 13 is a hanging hole part.

  The latent heat storage material used in the present invention is roughly a plate-like latent heat storage material as shown in FIG. 4, and such a plate-like latent heat storage material can ensure a certain surface area, It is adopted because it can realize heat storage and heat dissipation. However, the present invention is not necessarily limited to using such a latent heat storage material. As a main material of the latent heat storage material, for example, a phase change material such as paraffin (Phase Change Material) is used, and heat exchange with air is performed by such a latent heat storage material.

  Since the plate-like latent heat storage material as described above can be manufactured as a bulk having a certain size as compared with the granular latent heat storage material of the conventional example, the manufacturing cost can be reduced, and the heat storage It is possible to construct a full-floor floor air-conditioning system at low cost while maintaining performance and heat dissipation performance.

  For example, the latent heat storage material is obtained by impregnating and supporting a polymer such as a gel agent with a latent heat storage material. Examples of the latent heat storage material include hydrocarbon compounds such as paraffin as described above, aromatic compounds, organic fatty acids, An inorganic hydrate salt such as sodium sulfate decahydrate can be contained. In addition, a material in which a latent heat storage material is encapsulated in a network molecule such as a polymer adsorbent may be used, or a material in which a latent heat storage material is supported on a sponge filter or the like may be used.

The amount of heat stored by the latent heat storage material is 2880-3600 kJ / m ² when the thickness is 30 mm in the case of paraffin 70-90% impregnation (when the bulk density is 800 kg / m ³ , latent heat 120-150 J / g). It becomes ² to 3 times the heat storage amount 1068 kJ / m ^{2 in which} the housing heat storage of only the slab is performed for 5 hours, and the heat storage amount increases.

As shown in FIG. 4, the plate-like latent heat storage material 10 has a shape in which a thin portion 11 having a width w and a height h is formed on the periphery of a thick portion 12 having a thickness d. A suspension hole 13 is provided above both ends.
A suspension shaft 18 is inserted into the suspension hole 13 formed in the thin portion 11 at the time of construction so as to be suspended directly under the floor panel 3.

  The plate-like latent heat storage material 10 of the present invention can be manufactured as a bulk having a certain size as compared with a granular latent heat storage material, and the manufacturing cost can be reduced. If d is too thick, the heat exchange performance is reduced, so the thickness is desirably 10 mm or more and 20 mm or less.

FIG. 5 is a diagram comparing the plate-like latent heat storage material used in the present embodiment and the plate-like latent heat storage material according to the comparative example. FIG. 5 is a diagram showing changes in heat exchange performance (K [W / mm ² · ° C.], heat release [W]) accompanying changes in the thickness d of the plate-like latent heat storage material. In view of the fact that it is sufficient to use a latent heat storage material having a heat release amount of about 79.7 W to 33.7 W as a range for processing the air conditioning load of a general office building, the entire floor blowout air conditioning of the present invention. As the plate-like latent heat storage material 10 used in the system, the thickness d is set to 10 mm or more and 20 mm or less.

  The width w of the plate-like latent heat storage material 10 is preferably 400 mm or more and 500 mm or less. This is because the size of one floor panel 3 is 500 mm × 500 mm, and the width w is set to 400 mm or more and 500 mm or less, so that the plate-like latent heat storage is performed so as to correspond to each floor panel 3 at the time of installation. The material 10 can be stored. Thereby, at the time of wiring work, wiring work becomes possible by removing in units of three floor panels.

  The height h of the plate-like latent heat storage material 10 is preferably 50 to 100 mm. This is because the normal double floor has a height of about 150 mm to 200 mm, and even if the plate-like latent heat storage material 10 is arranged, it is possible to secure a wiring space and an open space.

  In the installation method of the plate-like latent heat storage material 10 configured as described above, the floor panel 3 is removed and the latent heat storage material support 15 is installed at the four corners on the floor slab 1. Next, by using the suspension holes 13 opened at both ends of each plate-like latent heat storage material 10, the required number of plates (about 4 to 13) according to the required heat storage amount. The latent heat storage material 10 is attached to the suspension shaft 18. The plate-like latent heat storage material 10 provided on the suspension shaft 18 is attached to the latent heat storage material support 15 by an appropriate method, and is accommodated in the air supply chamber 4.

  In this way, on the floor where the plate-like latent heat storage material 10 is installed, air flows into the room from the double-floor air supply chamber 4 during daytime air conditioning, so the plate-like latent heat storage material 10 is held at the top of the double floor. Since air passes between the plate-like latent heat storage materials 10, the plate-like latent heat storage materials 10 and the air can efficiently contact and dissipate heat.

  Moreover, since the plate-like latent heat storage material 10 is blown and stored with cold air at night, the plate-like latent heat storage material 10 can be ventilated.

  According to the entire floor blowing air conditioning system of the present invention as described above, the manufacturing cost of the heat storage material itself can be suppressed, and the entire floor blowing air conditioning system is constructed at low cost while maintaining the heat storage performance and the heat radiation performance. It becomes possible.

  Next, an entire floor blowout air conditioning system using the plate-like latent heat storage material 10 that houses the latent heat storage material configured as described above will be described. FIG. 6 is a diagram showing a state of daytime heat radiation operation of the entire floor blowing air-conditioning system according to the embodiment of the present invention, and FIG. 7 is a night heat storage operation of the entire floor blowing air-conditioning system according to the embodiment of the present invention. FIG. 6A and 7B, (A) is a full floor blowout air-conditioning system, and (B) shows an adjusted air volume ratio by each damper of the full floor blowout air conditioning system. In addition, the site | part to which the code number demonstrated so far was attached | subjected is the same as the previous description.

  The entire floor blowing air conditioning system of the present invention will be described with reference to FIGS. In the figure, reference numeral 5 is an air-conditioning target room, 6 is its ceiling surface, 7 is a ceiling chamber as a return air chamber, and 8 is an air conditioner. In the figure, MD1 to MD4 are dampers provided in the duct.

  In the daytime heat radiation operation of FIG. 6, the air conditioner 8 performs temperature / humidity adjustment and dust removal with a built-in cooler, heater, humidifier, and filter (all not shown) and supplies air with the blower 9. The supply air SA is supplied into the room through the duct 21 and the air outlet 3b (not shown), the return air RA is sucked into the ceiling chamber 7 from a suction port (not shown) provided on the ceiling surface 6, and the exhaust duct is discharged from the main return air port 31. 22 is returned to the air conditioner 5 for circulation.

  A part of the return air RA is exhausted to the outside through the ceiling return air duct 22 system as the exhaust air EA, and an appropriate amount of outside air OA is taken in from the outside air intake duct 24. Further, a bypass duct 25 is connected between the outside air intake duct 24 and the exhaust duct 22 as shown in the figure.

  In the daytime heat radiation operation of FIG. 6, each damper is adjusted such that the air volume ratio with respect to the rating of each damper passing through the dampers MD1 to MD4 is as shown in FIG. In the daytime heat radiation operation, the air volume ratio of the damper MD2 is closed so as to be zero. On the other hand, in the night heat storage operation of FIG. 7, each damper is adjusted so that the air volume ratio passing through the dampers MD1 to MD4 is as shown in FIG. 7B.

  The air supply chamber 4 is provided with a sub return port 32, and is configured to be circulated from the sub return port 32 through the underfloor return air duct 23 to the air conditioner 5. In the night-time heat storage operation of the full-floor blowout air conditioning system of the present invention, the return air RA is also returned from the auxiliary return air port 32 through the underfloor return air duct 23 to the air conditioner 5 and circulated, and at the same time, the return air RA is also supplied from the air conditioning target room 5 to the ceiling chamber. 7, and is returned to the air conditioner 5 from the main return air port 31 through the ceiling return air duct 22 and circulated. When each damper is controlled so that the air volume ratio at this time is as shown in FIG. 7B, the latent heat storage material is efficiently stored.

  Next, as a comparative example of the present invention, a full floor blowout air conditioning system using only the heat storage of the floor slab 1 will be described. FIG. 8 is a diagram illustrating a state of the daytime heat radiation operation of the full floor blowing air-conditioning system according to the comparative example, and FIG. 9 is a diagram illustrating a night heat storage operation of the full floor blowing air conditioning system according to the comparative example. In FIGS. 8 and 9, the parts denoted by the reference numerals described so far indicate the same configuration as described above. 8A and 9B, (A) is a full-surface floor blowing air conditioning system of a comparative example, and (B) shows a regulated air volume ratio by each damper of the full-floor blowing air conditioning system. In this comparative example, since the latent heat storage material is not used, there is no configuration related to the plate-like latent heat storage material 10.

  In particular, in the entire floor blowing air conditioning system according to the comparative example, the air volume ratio of the damper MD2 becomes 0 in the nighttime heat storage operation of FIG. 9, which is greatly different from the entire floor blowing air conditioning system of the present invention using the latent heat storage material. . For this reason, although illustrated, in the full-floor blowing air conditioning system according to the comparative example, the auxiliary return air port 32, the underfloor return air duct 23, and the damper MD2 are unnecessary.

  As described above, according to the entire floor blowing air-conditioning system of the present invention, it is possible to improve the heat storage performance and the heat radiation performance while maintaining the function as the OA floor and to realize an inexpensive construction.

  Although various embodiments have been described above, embodiments configured by appropriately combining the configurations of the respective embodiments also fall within the scope of the present invention.

It is a figure which shows the double floor structure of the whole surface floor blowing air conditioning system which concerns on embodiment of this invention. It is a top view of the floor panel single-piece | unit used for the whole surface floor blowing air conditioning system which concerns on embodiment of this invention. It is a perspective view of the latent-heat storage material support body used for the full floor blowing air-conditioning system concerning an embodiment of the invention. It is a figure which shows the plate-shaped latent-heat storage material used for the whole surface floor blowing air conditioning system which concerns on embodiment of this invention. It is a figure which compares the plate-shaped latent heat storage material used for this embodiment with the plate-shaped latent heat storage material which concerns on a comparative example. It is a figure which shows the mode of the daytime heat dissipation driving | operation of the whole surface floor blowing air conditioning system which concerns on embodiment of this invention. It is a figure which shows the mode of the night heat storage driving | operation of the whole surface floor blowing air conditioning system which concerns on embodiment of this invention. It is a figure which shows the mode of the daytime heat radiation driving | operation of the whole surface floor blowing air conditioning system which concerns on a comparative example. It is a figure which shows the mode of the night heat storage driving | operation of the whole surface floor blowing air conditioning system which concerns on a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Floor slab, 2 ... Column, 2a ... Base part, 2b ... Lower pillar part, 2c ... Upper pillar part, 2d ... Support part, 3 ... Floor panel, 3a ... groove, 3b ... outlet, 4 ... air supply chamber, 10 ... plate-like latent heat storage material, 11 ... thin part, 12 ... thick part, 13 ... Hole for suspension, 15 ... Latent heat storage material support, 16 ... Base, 17 ... Strut, 18 ... Hanging shaft, 21 ... Air supply duct, 22 ... Ceiling return duct, 23 ... Underfloor return duct, 24 ... Outside air intake duct, 25 ... Bypass duct, 31 ... Main return vent, 32 ... Sub return vent

Claims (1)

Floor slabs,
A floor panel provided on the floor slab and formed with blowout holes;
A plate-like latent heat storage material which is disposed between the floor slab and the floor panel, and which is composed of a thick part and a thin part formed at the periphery of the thick part, and is capable of directly exchanging heat with air; ,
A latent heat storage material support for supporting the plate-like latent heat storage material,
A suspension hole is provided at both ends of the thin portion of the plate-like latent heat storage material, and the plate-like latent heat storage material is inserted into a suspension shaft using the suspension hole, The entire floor blowout air conditioning system, wherein the plate-like thick portion of the plate-like latent heat storage material is suspended from the floor panel side by the latent heat storage material support so as to be perpendicular to the floor slab. system.

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