JPH0131868Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an underfloor heat storage device that can evenly heat a heat storage material and improve heat storage efficiency by providing a ventilation section in the lower part of a partition plate.

[Background technology]

The underfloor space is filled with heat storage material and used as a heat storage tank, but in the conventional method, as shown in Figure 7, the air inlet and outlet are located on the entire surface of the partition plate b of the heat storage tank a. As a result, high-temperature air flows upward, creating a temperature difference between the upper part U and the lower part L of the heat storage tank a, resulting in a problem that the heat storage efficiency of the heat storage tank a is inferior.

[Purpose of invention]

The object of the present invention is to provide an underfloor heat storage device that can solve the above-mentioned problems based on forming a heat storage space between a pair of partition plates having a ventilation section in the lower part.

[Disclosure of invention]

An embodiment of the present invention will be described below based on the drawings. In Figures 1 and 2, an underfloor heat storage device 1 of the present invention is shown.
By disposing a pair of partition plates 3a and 3b having ventilation portions 4 below in the underfloor space 2, a heat storage space 7 formed between them is loaded with a heat storage material 9. In this example, warm air from the solar heat collector C is sent.

The underfloor space 2 includes a cloth foundation B and a subfloor surface E.
It is a space surrounded by a floor body F, and the underfloor surface E and cloth foundation B are provided with heat insulating materials 12 and 13.

As shown in FIG. 2, the partition plates 3a and 3b include an upper plate, a lower plate, and the upper plate attached to the floor F, subfloor surface E, and cloth foundation B via heat insulating materials 12 and 13,
Tubular ventilation pipe 2 with a back plate connecting between the trailing edges of the lower plate
A front plate disposed on the front edge tube of the upper plate and lower plate of No. 3 and 24, for example, a cover plate 27 hangs down and is shielded from the upper half, and a lattice frame is arranged in the lower part. The ventilation section 4 is formed. In addition, the back plate includes
Vent holes 15, 16 are provided.

The heat storage space 7 is a space between the partition plates 3a and 3b, and a solid heat storage material 7 such as crushed stone or gravel is loaded thereinto to form a heat storage tank. In addition, the ventilation pipe 23
The ventilation portion 4 of the ventilation pipe 24 forms an air inlet 5, and the ventilation portion 4 of the ventilation pipe 24 forms an air outlet 6.

In addition, one end of the vent 15 has a solar heat collector C.
The other end of the duct 34, which communicates with the outlet 31 and has the fan 33 interposed therebetween, is inserted through the cloth foundation B and connected thereto. In addition, a duct 35 through which the cloth foundation B is inserted is provided in the ventilation hole 16.
It communicates with the inlet 32 of the solar heat collector C by.

In addition, the duct 34 has switching valves 41, 42 for switching the ventilation holes 36, 37 that open in the room R above and below the fan 33.
communicate by intervening. Further, a ventilation port 39 is communicated with the duct 35 via a switching valve 43.

As the fan 33 is driven, the hot air from the solar heat collector C passes through the duct 34, the vent 15, and the vent pipe 23, passes through the air inlet 5, flows into the heat storage space 7, and exchanges heat with the heat storage material 9. , through the air outlet 6, the ventilation pipe 24, and the duct 35 to the solar heat collector C.
Reflux to.

In addition, in order to air condition the room R, the switching valves 42, 4
3, as the fan 33 is driven, the hot air from the solar heat collector C is discharged into the room from the vent 37 via the duct 34 for air conditioning, and the return air is transferred from the vent 39 to the duct 35.
It flows back to the solar heat collector C. Also, at night, etc., operate the switching valves 41 and 43 to close the ventilation port 3.
By opening 6 and 39, the heat stored in the heat storage material 9 is taken out and circulated through the vents 36 and 39 to heat the room R.

Since the partition plates 3a and 3b are provided with an air inlet 5 and an air outlet 6 at the lower part of the partition plate 3, hot air flows from the lower part L of the heat storage space 7 to the upper part U while exchanging heat with the heat storage material 9. After generating a downward flow, the air flows out from the air outlet 6, so that the upper layer U in the heat storage space 7
This is useful for equalizing the heat between the upper layer and the lower layer L.

In order to confirm the effectiveness of the device 1 of the present invention, the temperature inside the heat storage space 7 was measured. Further, as a comparative example, a conventional product shown in FIG. 7 was also measured in the same manner.

Figures 3 to 5 are graphs of the temperatures measured at 16:00 on the same day at the entrance, center, and outlet of the upper part U and lower part L of the heat storage space 7. , FIG. 4 shows a comparative example product. Further, FIG. 5 compares the temperature difference between the upper layer U and the lower layer L based on the measured values shown in FIGS. 3 and 4. In the comparative example, the temperature difference between the top and bottom of the central part of the heat storage space 7 is 13°C, while in the example product, the temperature difference between the top and bottom is 4°C because hot air can flow through the lower part U. ℃, the temperature difference was significantly reduced.

Furthermore, FIG. 6 is a graph showing the temperature change in the central part of the heat storage space 7 over time, and in the figure U
indicates the temperature of the upper layer, and L indicates the temperature of the lower layer. In addition, in any time period, the temperature difference between the upper and lower parts of the example can be significantly reduced compared to that of the comparative example. Note that overheating of the extreme parts of the heat storage material 7 increases heat dissipation and reduces the heat storage effect, while equalizing the heat reduces overall heat dissipation and is useful for increasing heat storage efficiency.

[Effect of idea]

In this way, the underfloor heat storage device of the present invention forms a heat storage space between a pair of partition plates, and also provides vents that serve as the air inlet and air outlet of the heat storage space at the lower part of the partition plate, so that the upper layer of the heat storage space Since the temperature difference in the lower layer can be significantly reduced and the temperature of the heat storage space can be raised almost uniformly, the heat storage efficiency can be improved. Furthermore, since the partition plate can form a ventilation pipe, it becomes easy to form a heat storage space.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a perspective view illustrating the partition plate, Figure 3 is a diagram showing the temperature distribution of the product of this example, Figure 4 is a diagram showing the temperature distribution of the product of comparative example, and Figure 5 is a diagram showing the temperature distribution of the product of this example. FIG. 6 is a diagram showing the temperature difference between the sample and the comparative example product, FIG. 6 is a diagram showing the temperature change therebetween, and FIG. 7 is a diagram showing the conventional device. 2...Underfloor space, 3a, 3b...Partition plate, 4
... Ventilation part, 5 ... Air inlet, 6 ... Air outlet,
7... Heat storage space, 9... Heat storage material, 23, 24...
ventilation pipe.

Claims (1)

[Scope of utility model registration request] A pair of tubular ventilation pipes are connected by a back plate between the rear edges of the upper plate and the lower plate, and a partition plate having a ventilation portion in the lower part is provided between the front edges, with the partition plates facing each other and spaced apart. A heat storage space is provided in the underfloor space in which an air inlet and an air outlet are formed by the ventilation portion, and a solid heat storage material is loaded in the heat storage space. Heat storage device.