JPH0412372B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Technical Field] The present invention relates to an air-conditioning device that individually cools and heats rooms such as office buildings, and a heat storage body that stores heat to cope with peak loads during air-conditioning. The present invention relates to a heat storage heating and cooling device.

[Conventional technology]

For heating and cooling equipment that individually cools and heats rooms in office buildings, etc., there is a need to equalize the power load and downsize the equipment, and a common countermeasure to this is heat storage that can cut the peak load during heating and cooling. The body is systemized as a heating and cooling device. Usually, the heat storage body is configured to store heat by using surplus electricity at night, and to give the stored heat to return air when the indoor temperature reaches its peak during heating and cooling.

Conventionally, as the heat storage body, an open type heat storage tank a as illustrated in FIG. 5 or a closed type heat storage tank a' as illustrated in FIG. 6 has been adopted.

In the case of the open heat storage tank a illustrated in FIG. 5, the content water b in the open heat storage tank a is circulated through a circulation circuit e equipped with a pump c and a refrigerator d to cool it.
The cold water is sent by a pump f to a terminal device (fan coil unit, etc. g) in each room.The open heat storage tank a is constructed using the building frame.

In addition, in the case of the closed heat storage tank a' shown in FIG. (fan coil unit, etc.) k.

[Problems to be Solved by the Invention] However, the above-mentioned conventional method has the following drawbacks. That is, both the open heat storage tank a and the closed heat storage tank a' are intended for use in all rooms. As a result, they have a large capacity, require dedicated installation space in a specific location in the building, and have long energy transport lines to each room, resulting in large energy losses.

In addition, in recent years, heat storage methods that use frame stones and ice have been put into practical use, but even these heat storage methods are intended to be used centrally in all rooms, so they are different from the above-mentioned heat storage devices. A similar problem arises.

Therefore, the present invention eliminates the need to provide a dedicated space for installation in a specific location such as a building, and allows heat storage near where the heat is used, reducing energy transport losses and losses due to adverse effects at the heat storage location. is suppressed as much as possible, stores energy with high efficiency, and
The present invention provides a heat storage heating and cooling device that can be used.

[Means to solve the problem]

A first invention includes: a heating and cooling device; a heat storage unit including a heat storage container containing a heat storage body installed in an attic space; a first duct that connects the heating and cooling device with an air outlet provided in the ceiling of a living room; A second duct that connects the inlet of the heat storage section and the air conditioning device, a third duct that connects the return air port on the ceiling with the second duct, and a first duct that connects the outlet of the heat storage section and the air conditioning device. It is equipped with a return air damper and a second return air damper provided on the inlet side of the air conditioning device, and exchanges heat between the heat storage body in the heat storage unit and the return air introduced from the return air port, and also cools and warms air from the air conditioning device. The structure is such that heat is stored by

The second invention includes an air-conditioning device, a heat storage section including a heat storage container placed on a multi-tiered shelf with a flat heat storage body installed inside the attic space, and a heat storage unit that is installed between the air-conditioning device and the ceiling of a living room. A first duct that connects the installed air outlet, a second duct that connects the introduction part of the heat storage unit and the air conditioning equipment, a third duct that connects the return air opening on the ceiling with the second duct, A heat storage body placed between each shelf in a heat storage container, comprising a first return air damper provided between the outlet and the heating and cooling device, and a second return air damper provided on the inlet side of the heating and cooling device. The system is configured to exchange heat by passing return air introduced from the return air port into the air conditioner, and to store heat using cold and hot air from the air conditioning system.

The third invention is a heating and cooling device, a heat storage section in which a heat storage container containing a heat storage body made of a large number of spherical or polyhedral heat storage blocks is placed, and the heating and cooling device is provided on the ceiling of a living room. A first duct that communicates with the air outlet, a second duct that communicates the inlet of the heat storage unit with the air conditioning device, a third duct that communicates with the return air opening on the ceiling and the second duct, and an outlet of the heat storage unit. A first return air damper is provided between the air conditioner and the air conditioning device, and a second return air damper is provided on the suction port side of the air conditioner. It is configured to exchange heat by passing air through it, and to store heat using cold and hot air from the air-conditioning device.

[Effect]

In the present invention, the air conditioning system is operated using surplus power at night, and cold air or warm air is sent to the heat storage body through the second duct to store heat in the heat storage body. During normal operation during the day, the second duct is closed to cut off the heat storage body and the air conditioning system, and the return air from the living room is introduced into the air conditioning system through the inlet, and the return air conditioned by the air conditioning system is transferred to the first duct. The air is returned to the living room through the air outlet installed in the ceiling. On the other hand, during peak operation, the second ventilation damper is closed to close the suction port, and the first return air damper is opened.
Return air is introduced into the heat storage body through the return air port installed in the ceiling, exchanges heat while coming into contact with the heat storage body, and is introduced into the air conditioning system.The return air is conditioned by the air conditioning system and then installed in the ceiling via the first duct. Return to the living room through the air outlet.

〔Example〕

Hereinafter, the present invention will be explained based on the drawings.

FIG. 1 shows a heat storage heating and cooling system according to a first embodiment of the present invention. In the figure, 1 is a living room, 2 is a wall-through air conditioning system installed in the attic space 3 of the living room 1, and 4 is a wall-through heating and cooling system installed in the attic space 3 of the living room 1. This is a heat storage section that is also installed in the attic space 3.

In the case of the illustrated cooling operation, the heating and cooling device 2 cools the return air (R・A) introduced into the device through the suction port 6 by the suction of the blower 5 through the direct expansion coil 7 during normal operation. This is led out into the living room 1 from each air outlet 9 via the blower 5 and the first duct 8. Note that a refrigerant cooled by a condenser 11 flows through a compressor 10 through the direct expansion coil 7 . When the warmed return air (R.A) passes through the direct expansion coil 7, its heat is absorbed by the refrigerant, that is, heat exchange is performed and the air is cooled.

As shown in FIGS. 2 and 3, the heat storage section 4 includes a gel-like latent heat storage material (for example, sodium sulfate decahydrate (Na ₂ SO ₄ .10H ₂ O), calcium chloride hexahydrate (CaCl ₂ . 6H ₂ O) etc.) in a flat shape heat storage body 12
and a plurality of shelves 13 in which the heat storage body 12 is provided.
It is composed of a thin prismatic heat storage container (usually made of iron plate) 14 placed on the container. And the heat storage section 4
is installed in the attic space 3 by suspending the heat storage container 14 from the lower surface of the upper floor slab 15 by embedded bolts 16 or the like.

The heat storage body 12 placed on each shelf 13 is made into a unit by a large number of divided bodies 17. In the illustrated case, the divided bodies 17 are square, and a plurality of divided bodies 17 are arranged in three rows.

The heat storage container 14 includes a heat storage body housing part 18 that houses the heat storage body 12, and an introduction part 19 and a lead-out part 20 that are bolted together before and after these parts.

The first duct 21 is connected between the introduction part 19 and the blower 5.
When the damper 22 provided near the blower 5 is switched, the cold air from the air-conditioning device 2 flows into the heat storage container 14 via the second duct 21 and the introduction part 19. The cold air flows between each shelf 13 and is introduced into the air conditioning system 2 via the first return air damper 23. When the cold air flows between each shelf 13, each shelf 13
The heat is absorbed by the divided bodies 17 of the heat storage body 12 placed on the . In other words, heat is stored in the heat storage section 4. In this case, the divided body 17 undergoes a phase change from a gel-like state to a solidified state. During heating operation, the phase changes from gel-like to molten. Note that when the damper 22 is switched, the cold air flows through the first duct 8 to the air outlet 9.
It flows into living room 1 from here. Further, the damper 22 is controlled by a remote controller (not shown).

The introduction part 1 of the heat storage container 14 is installed on the ceiling 24 of the living room 1.
9 and a return air port 26 connected to the second duct 25 is provided. Return air (R・
Return air (A) flows into the heat storage container 14 via the second duct 25 and the introduction part 19, flows between each shelf 13, and is introduced into the air conditioning system 2 via the first return air damper 23. When R.A) flows between each shelf 13, the divided body 17 of the heat storage body 12 placed on each shelf 13
It is primarily cooled by exchanging heat (absorbing cold heat) with the coil 7, and then cooled secondarily through the direct expansion coil 7. The secondary cooled return air (R.A) is led out into the living room 1 from each outlet 9 via the blower 5 and the first duct 8. When introducing the return air (R.A) into the return air port 26 in this way, the second return air damper 27 on the side of the suction port 6 is closed, and the first return air damper 23 is opened. Control of these first and second return air dampers 23 and 27 is performed by a sensor (thermostat) 28 installed in the living room 1, and when the inside of the living room 1 is within a predetermined temperature, the second return air damper is controlled. 27 is opened and the first return air damper 23 is closed, and when the temperature exceeds a predetermined temperature, the second return air damper 27 is closed and the first return air damper 23 is closed.
opens.

Next, the operation of the heating and cooling device according to this embodiment configured as described above will be explained.

During the night, the compressor 10 and the blower 5 are operated using the surplus electric power, and the cold air that has been heat exchanged and cooled by the direct expansion coil 7 is caused to flow through the second duct 21 by switching the damper 22 as described above. put. As a result, the cold air flows between the shelves 13 and is introduced into the air conditioning system 2 via the first return air damper 23. When the cold air flows between the shelves 13, heat is absorbed by the divided bodies 17 of the heat storage body 12 placed on each shelf 13. In other words, heat is stored in the heat storage section 4. In this case, the divided body 17 undergoes a phase change from a gel-like state to a solidified state. During heating operation, the phase changes from gel-like to molten.

During normal operation during the day, the second return air damper 27 is opened and the first return air damper 23 is closed, so that return air (R・A) is sucked by the blower 5 through the suction port 6. The air is introduced into the device, cooled through the direct expansion coil 7, and then led out into the living room 1 from each outlet 9 via the blower 5 and the first duct 8.

In addition, during peak operation, the second return air damper 27 is closed and the first return air damper 23 is opened, so that the return air (R/A) is transferred from the return air port 26 through the second duct 25 to accumulate heat. It is introduced from introduction section 19 of section 4. The return air (R・A) flowing into the heat storage container 14 is
The air flows between the shelves 13 and is introduced into the air conditioning system 2 via the first return damper 23. Then, when the return air (R・A) flows between each shelf 13, each shelf 13
It is primarily cooled by heat exchange (cold heat absorption) with the divided body 17 of the heat storage body 12 placed on the direct expansion coil 7.
Secondary cooling occurs through the The secondary cooled return air (R.A) is led out into the living room 1 from each outlet 9 via the blower 5 and the first duct 8. In this case, the return air (R.A) is temporarily cooled by heat exchange with the heat storage body 12, and the heat load is reduced.

Note that although the above operation has been described with respect to the cooling operation, the same applies to the heating operation.

As described above, according to this embodiment, the heating and cooling device 2 and the heat storage container 14 placed on the multiple shelves 13 each having the flat heat storage body 12 installed therein are installed in the attic space 3.
A first duct 8 connects the heat storage unit 4 installed in the heating and cooling unit 2 with the air outlet 9 provided in the ceiling 24 of the living room 1, and connects the introduction part 19 of the heat storage unit 4 with the air conditioning unit 2. The second duct 21 , the third duct 25 that communicates with the return air port 26 of the ceiling 24 and the second duct 21 , and the first return air damper 23 provided between the outlet section 20 of the heat storage section 4 and the air conditioning device 2 and a second return air damper 27 provided on the side of the suction port 6 of the air-conditioning device 2. In addition to exchanging heat by passing air (RA),
Since it is configured to store heat using cold and hot air from the air-conditioning device 2, heat can be stored in the heat storage section 4 by making the cold and hot air flow through the heat storage section 4 using surplus electric power at night. By giving that heat to the return air (RA) flowing into the heat storage section 4 at peak times, the peak load can be reduced, and therefore,
Leveling the power load and downsizing the device can be achieved. Since the heat storage unit 4 is installed in the ceiling space 3 indoors, there is no need for a dedicated installation space like in the past. Because the heat is stored near where it is used, the energy transport flow line is short and there is little energy loss. Since the heat storage section 4 is packaged, it is not easily affected by the heat of the attic space, and therefore,
High heat storage efficiency. By increasing the amount of heat stored in the entire building, changes in outside temperature can be alleviated and a comfortable indoor temperature environment can be maintained. When the heat storage body 12 is configured to be flat and placed on a plurality of shelves 13 formed like a silkworm rack inside the heat storage container 18, the rectification of cold/hot air or return air flowing inside the heat storage container 18 is improved. is high, and the pressure loss of the blower is small. Heat storage body 12
It has high stability (shape retention) when the phase changes from a gel state (particularly melting), and furthermore, if the heat storage body 12 is constituted by a plurality of divided bodies, productivity and maintenance become easy.

Moreover, since the return air passage is formed by the first duct 8, the second duct 21, the third duct 25, the heat storage container 14, and the air conditioning device 2, the speed of the return air can be increased as it flows through the attic space, etc. However, since a large number of heat storage bodies 12 in the heat storage container 14 are arranged on the shelf 13, the contact area with these heat storage bodies 12 increases, and the heat exchange efficiency decreases.
It can achieve the same heat storage effect as one that directly stores heat. Therefore, the device can be downsized.

Furthermore, since the return air passage is constituted by piping as described above, it is possible to suppress the thermal energy of cold air or warm air from being transferred to the building.

FIG. 4 shows a modified structure of the heat storage section in the present invention.

In this heat storage section 4', the heat storage body 12' is constructed by assembling a large number of spherical (or polyhedral) heat storage lumps 17'. Heat storage container 1
The heat storage body 1 is placed at both ends of the heat storage body storage portion 18' of 4'.
After housing 2', the mesh covers 29 and 30 are installed. In the case of this heat storage section 4', the cold and hot air from the second duct 21' and the return air (R.A) from the return air port 26' flow between the heat storage masses 17' and undergo heat exchange.

According to this embodiment, in addition to the effects of the above-described embodiments, the heat storage body 12' is constructed by assembling a large number of spherical or polyhedral heat storage lumps 17'.
Since the cold and hot air or return air flows between the heat storage blocks 17', the substantial surface area for heat exchange becomes large, and the heat storage efficiency and peak load reduction rate are high.

Note that the present invention is applicable not only to office buildings but also to apartment complexes, passenger ships, and the like.

Further, the structure of the latent heat storage material, the structure of the heat storage container, etc. may also be changed depending on the installation location, heat storage capacity, etc.

〔Effect of the invention〕

In summary, according to the heat storage heating and cooling device according to the present invention, since the return air passage is constituted by piping provided in the attic space, it is less affected by the heat of the attic space, and therefore the heat storage efficiency is improved. is high. By increasing the amount of heat stored in the entire building, changes in outside temperature can be alleviated and a comfortable indoor temperature environment can be maintained. Moreover, since the heat storage section is packaged, there is no need for a dedicated installation space like in the past. Furthermore, because the heat is stored near where the heat is used, it has the advantage that the energy carrying conductor is short and there is less energy loss.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the heat storage section, and FIG. 3 is a XX sectional view of the same.
Figure 4 is a sectional view showing the deformed structure of the heat storage section, Figure 5
FIG. 6 is a cross-sectional view showing a conventional heat storage body, respectively. In the figure, 1 is a living room, 2 is an air conditioning system, 3 is an attic space, 4 and 4' are a heat storage section, 6 is a suction port, and 8
is the first duct, 21, 21' is the second duct, 25
is the third duct, 9 is the air outlet, 12, 12' is the heat storage body, 13 is the shelf, 14, 14' is the heat storage container, 17 is the divided body, 17' is the heat storage mass, 22 is the damper, 23 is the first return air damper, 27 is a second return air damper, 26;
26' is a return air port, and R and A are return air.

Claims (1)

[Scope of Claims] 1. A heating and cooling device, a heat storage unit including a heat storage container containing a heat storage body installed in the ceiling space, and a first duct that connects the heating and cooling device with an air outlet provided in the ceiling of a living room. , a second duct that connects the inlet of the heat storage unit and the air conditioning equipment, a third duct that connects the return air opening on the ceiling with the second duct, and a second duct that connects the outlet of the heat storage unit and the air conditioning equipment. Equipped with a first return air damper and a second return air damper installed on the inlet side of the air conditioning system, it exchanges heat between the heat storage body in the heat storage section and the return air introduced from the return air port, and also absorbs the cold temperature from the air conditioning system. A heat storage air conditioning/heating device characterized by being configured to store heat through wind. 2. A heating and cooling device, a heat storage section consisting of a heat storage container placed on a multi-level shelf with a flat heat storage body installed inside the attic space, and a heating and cooling device and an air outlet provided in the ceiling of the living room. A second duct that connects the heat storage section inlet and the air conditioning system; A third duct that connects the ceiling return air port and the second duct; A heat storage section outlet and the air conditioning system. Equipped with a first return air damper installed in between and a second return air damper installed on the inlet side of the air conditioning system, the return air is introduced from the return air port to the heat storage body placed between the corner shelves in the heat storage container. What is claimed is: 1. A heat storage air-conditioning/heating device characterized in that it is configured to exchange heat by passing returned air through the air-conditioning device, and to store heat by cold/hot air from the air-conditioning/heating device. 3. The heat storage cooling and heating device according to claim 2, wherein the heat storage body placed on each shelf is constituted by a plurality of divided bodies. 4 A heating and cooling device, a heat storage unit comprising a heat storage container containing a heat storage body made of a large number of spherical or polyhedral heat storage blocks, and a communication between the heating and cooling device and an air outlet installed in the ceiling of the living room. a second duct that connects the inlet of the heat storage section with the air conditioning/heating device; a third duct that connects the return air port on the ceiling with the second duct; and a third duct that connects the outlet of the heat storage section with the air conditioning/heating device. It is equipped with a first return air damper provided in between and a second return air damper provided on the suction port side of the air conditioning device, and allows the return air introduced from the return air port to pass between the heat storage masses in the heat storage container. 1. A heat-storage air-conditioning and heating system characterized by being configured to exchange heat and store heat using cold and hot air from the air-conditioning and heating system.