JPH0555780B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Technical Field] The present invention provides an air-conditioning device that individually cools and heats a room such as an office service, 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]

In air-conditioning equipment that individually cools and heats rooms such as offices, there is a need to equalize the power load and downsize the equipment, and a general countermeasure to this is to use a heat storage device that can cut the peak load during heating and cooling. is systemized with air conditioning equipment. 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. 1 or a closed type heat storage tank a' as illustrated in FIG. 2 has been adopted.

In the case of the open type heat storage tank a illustrated in FIG.
The cold water is sent by a pump f to a terminal device (such as a fan coil unit) g in each room. and,
The open type heat storage tank a is constructed using a building frame.

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

[Problem to be solved by the invention]

However, the conventional method described above 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, methods that use crushed stone and ice have been put into practical use as heat storage means, but since these heat storage means are used to centralize all rooms, they are similar to the heat storage devices described above. The problem arises.

Therefore, the present invention eliminates the need for a dedicated space for installation in a specific location such as a building, allows heat storage near where the heat is used, reduces energy transport loss, and provides highly efficient energy storage. The present invention provides a heat storage cooling and heating device that can utilize the following.

[Means to solve the problem]

A heating and cooling device according to the present invention includes a heating and cooling device and a heat storage body provided in the attic space of a living room, and the heating and cooling device communicates with an air outlet provided in the ceiling of the living room via a first duct. The suction port communicates with the air conditioning system through the first return air damper, the heat storage body communicates with the air conditioning system through the cooling medium passage, and the attic space communicates with the air conditioning system through the first return air damper. The second duct communicates with the return air port provided in the heating and cooling device, and communicates with the heating and cooling device via a second return air damper, and the second duct communicates with the heating and cooling device through the second return air damper, and the second duct communicates with the heating and cooling device through a second return air damper. It is configured to exchange heat with the return air from the mouth and store heat through the cooling/heating medium passage.

[Effect]

In the present invention, the air conditioning system is operated using surplus power at night, and the refrigerant is stored in the heat storage body through the cold/heat medium passage. During normal operation during the day, the second duct is closed to isolate the attic space from the heating and cooling equipment, the return air from the living room is introduced into the heating and cooling equipment through the inlet, and the return air conditioned by the heating and cooling equipment is transferred to the air conditioner. The air is returned to the living room through a duct and an air outlet installed in the ceiling. On the other hand, during peak operation, the first return air damper is closed and the suction port is closed.
The second duct is opened, and the return air is introduced into the attic space from the return air port installed in the ceiling, where it exchanges heat while contacting the heat storage element and is introduced into the air conditioning system. The air is returned to the living room through a duct and an air outlet installed in the ceiling.

〔Example〕

Hereinafter, the present invention will be specifically explained based on FIG. 3.

In the figure, 1 is a living room, 2 is a wall-through air conditioning system installed in the perimeter zone of the living room 1, and 3 is a heat storage body installed in the attic space 4 of the living room 1.

In the case of the illustrated heating and cooling operation, the heating and cooling device 2 has a suction port 6 by suction from the blower 5 during normal operation.
The return air (R.A) introduced into the device through the direct expansion coil 7 is cooled, and is led out into the living room 1 from each outlet 9 via the blower 5 and the first duct 8. Note that the refrigerant that has passed through the compressor 10 and has been cooled by the condenser 11 flows through the direct expansion coil 7, and the warmed return air (R・A) is mixed with the refrigerant as it passes through the direct expansion coil 7. It is cooled by absorbing heat, that is, through heat exchange.

The heat storage body 3 is a gel-like latent heat storage material (for example, polyethylene glycol, ethylene glycol, etc.)
It is constituted by a heat storage section 12 having a flat shape, and a cooling/heating medium coil (cold/heating medium passage) 13 built therein. This heat storage body 3 includes a heat storage section 12
is installed in the attic space 4 by joining and fixing it to the lower surface of the upper floor slab 14 using an adhesive means. One end of the refrigerant coil 13 is connected to the condenser 1
1 and the direct expansion coil 7, and the other end is connected to a pipe 16 connecting the direct expansion coil 7 and the compressor 10 via a three-way switching valve 17. Therefore, depending on the switching of the three-way switching valve 17, there are cases in which all of the refrigerant drawn out from the condenser 11 directly flows to the direct expansion coil 7, and cases in which a part of it flows to the cooling/heating medium coil 13. . When the refrigerant flows through the refrigerant coil 13, the heat of the refrigerant is transferred to the heat storage section 1.
Absorbed by 2. In other words, heat is stored in the heat storage section 12. The refrigerant that has passed through the heat storage section 12 is transferred to the pipe 1
6, it joins with the refrigerant drawn out from the direct expansion coil 7 and flows into the compressor 10.

A return air port 19 is provided in the ceiling 18 of the living room 1, through which return air (R.A) can be introduced into the attic space 4. The return air (R/A) that has flowed into the attic space 4 flows along the heat storage section 12, where it undergoes heat exchange and is primarily cooled, and is introduced into the thermal heating device 2 via the second duct 20. In this section, the air is subjected to secondary cooling through a direct expansion coil 7, and is led out into the living room 1 from an air outlet 9 via an air blower 5 and a first duct 8. When introducing return air (R・A) into the attic space 4 from the return air port 19 in this way, the first return air damper 21 on the suction port 6 side is closed, and the second return air damper on the second duct 20 side is closed. 22 is released. These return air dampers 21 and 22 are controlled in the living room 1.
Sensor (thermostat) 23 installed inside
When the inside temperature of the room 1 is within a predetermined temperature, the first return air damper 21 is opened and the second return air damper 22 is closed, and when the temperature exceeds the predetermined temperature, the first return air damper 21 is closed. is closed and the second return air damper 22 is opened.

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

During the night, the compressor 10 is operated using surplus power, and the refrigerant cooled by the condenser 11 is caused to flow through the refrigerant heating coil 13 by switching the three-way switching valve 17 as described above. Thereby, heat is stored in the heat storage section 12. At this time, the blower 5 is in a stopped state.

During normal movement during the day, return air (R.A) is introduced from the suction port 6 by opening the first return air damper 21 and closing the second return air damper 22.
Then, the air is introduced into the air-conditioning device 2, where it is subjected to secondary cooling through the direct expansion coil 7, and is led out into the living room 1 from the air outlet 9 via the blower 5 and the first duct 8.

In addition, during peak operation, the first return air damper 21 is closed and the second return air damper 22 is opened, so that return air (R・A) is introduced into the attic space 4 from the return air port 19. By flowing along the heat storage section 12, heat is exchanged, primary cooling is achieved, and the heat load is reduced. The air is then introduced into the air conditioning system 2 through the second duct 20, where it is secondarily cooled through the direct expansion coil 7, and then into the living room 1 from the air outlet 9 via the blower 5 and the first duct 8. derived.

As described above, in this embodiment, the heating and cooling device 2 and the heat storage body 3 provided in the attic space 4 of the living room 1 are
The heating and cooling device 2 communicates with an air outlet 9 provided in the ceiling 18 of the living room 1 via a first duct 8, and also communicates with an inlet 6 provided on the living room 1 side, and the inlet 6 The heat storage body 3 communicates with the air conditioning device 2 via the first return air damper 21, the heat storage body 3 communicates with the air conditioning device 2 via the cold/heat medium passage 13, and the attic space 4 communicates with the air conditioning device 2 through the return air opening 19 provided in the ceiling 18. The second duct 20 communicates with the second return air damper 22 and communicates with the heating and cooling device 2.
The structure is configured so that the heat storage body 3 communicates with the air conditioning system 2 through the air conditioning system 2, exchanges heat with the return air from the return air port 19, and stores heat through the cold/heat medium passage 13. Heat can be stored in the heat storage body 3 by flowing the medium through the cooling/heating medium passage 13, and by giving that heat to the return air flowing through the attic space (heat absorption return air path) at peak times, the peak load can be reduced. can be achieved. Therefore, it is possible to level out the power load and downsize the device, and since the heat storage body 3 is installed in the attic space,
There is no need for a dedicated installation space like in the past.
In addition, since the heat is stored near where it is used, the general energy flow line is short and there is less energy loss. In addition, since the heat storage body 3 is installed in the attic space 4 to store heat, it is possible to increase the heat capacity of the entire building, thereby alleviating temperature changes in the outside world.
It has the advantage of maintaining a comfortable indoor temperature environment.

In the above embodiment, the cooling operation was explained, but the heating operation is also performed in the same manner. Further, the structure of the heat storage body 3 can be changed as appropriate depending on the installation location, amount of heat storage, etc.

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

〔Effect of the invention〕

In summary, in the heat storage heating and cooling device according to the present invention, since the heat storage body is installed in the ceiling space,
Direct contact with return air becomes possible, improving heat exchange efficiency. In addition, there is no need for a dedicated installation space like in the past, and because the heat is stored near where it is used, the energy transport flow line is short.
Less energy loss. Furthermore, since the heat capacity of the entire building can be increased, temperature changes in the outside world can be alleviated, and a comfortable indoor temperature environment can be maintained.

[Brief explanation of drawings]

FIGS. 1 and 2 are sectional views showing conventional heat storage bodies, respectively, and FIG. 3 is a sectional view of an embodiment of the present invention. In the figure, 1 is a living room, 2 is an air conditioning system, 3 is a heat storage body, 4 is an attic space, 6 is a suction port, 8 is a first duct, 9 is a suction port, 13 is a cooling/heating medium coil (cold/heating medium passage), 18 is a ceiling, 19 is a return air port, 20 is a second duct, 21 is a first return air damper, 22 is a second return air damper, and R and A are return air.

Claims (1)

[Claims] 1. The heating and cooling device 2 includes a heating and cooling device 2 and a heat storage body 3 provided in the attic space 4 of the living room 1. The heating and cooling device 2 connects to the living room 1 through a first duct 8.
communicates with the air outlet 9 provided in the ceiling 18 of the
It communicates with an inlet 6 provided on the living room 1 side, the inlet 6 communicates with the heating and cooling device 2 via the first return air damper 21, and the heat storage body 3 communicates with the heating and cooling device 2 via the cooling medium passage 13. The attic space 4 is connected to the return air vent 19 provided in the ceiling 18.
The second duct 20 communicates with the air conditioning device 2 via a second return air damper 22, and the heat storage body 3 is connected to the air conditioning device 2 through a second duct 20 that communicates with the air conditioning device 2. A heat storage air conditioning/heating device characterized in that it is configured to exchange heat with return air from an opening 19 and to store heat through a cooling/heating medium passage 13.