JPH0114819Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a heating and cooling device that enables high-output heating even with relatively low capacity.

<Prior art> Conventional heating and cooling systems using heat pumps generally use outdoor air as a low- or high-heat source to heat or cool indoor rooms. Since the output of the air-conditioning equipment decreases, a large-capacity air-conditioning equipment is required to obtain sufficient heating output even in the expected low outdoor air temperature, which is not only bulky but also expensive. There is. Further, although this type of device usually has an indoor unit and an outdoor unit arranged separately and connected by piping, there are installation problems such as the need for installation space for each within the useful living space.

<Purpose of the invention> The present invention was devised in view of the above points.A heat pump unit is installed using the roof, and when the temperature of the outdoor air is low, it is heated by storing heat from the solar heat storage agent installed in the attic. An object of the present invention is to provide an air-conditioning/heating device capable of heating operation using air that has been removed as a low heat source.

<Structure of the invention> For this reason, the invention disposes a solar heat storage agent on the back side of the roof, at least a part of which is made of a light-transmitting member,
a heat exchanger that exchanges heat with air that can be thermally contacted with the solar heat storage agent and is discharged outdoors; and a heat exchanger that exchanges heat with outdoor air that is discharged indoors; The air-conditioning/heating device is provided in the roof ridge part in communication with the attic, and one side of an air flow passage provided in a pillar or wall and communicating with the room is communicated with a heat exchanger that exchanges heat with outdoor air.

<Embodiment of the invention> An embodiment of the invention will be described below based on the drawings.

In FIG. 1, a part of the roof 2 of a building 1 is made of transparent special glass 3, and a latent heat type heat storage agent 4 is disposed as a solar heat storage agent in the attic A below the roof 2.

The attic A has communication ports 6 and 7 communicating with the outdoors B and the indoors C, respectively, on the side of the wall 5 that partitions the outdoors and the indoors, and on the roof ridge side, a heat pump unit 8 has a part of its main body attached to the ridge. It is installed so that the roof can be seen from outside.

The internal structure of this heat pump unit 8 is as follows.

That is, in FIG. 2, the compressor 13 that compresses the refrigerant has a piping route in two directions, and one piping is connected to the first heat exchanger 15 via the four-way valve 14.
The other pipe is connected to the second heat exchanger 1 via the four-way valve 14.
6, and both heat exchangers 15 and 16
are pipe-connected via expansion means 17 to form a refrigerant circulation circuit. The first heat exchanger 15 and the second heat exchanger 16 are equipped with blowers 15a and 16, respectively.
It is equipped with a.

In the heat pump unit 8, during heating operation, the refrigerant compressed by the compressor 13 is introduced into the first heat exchanger 15 through the four-way valve 14, where it absorbs heat through heat exchange, and further passes through the expansion means 17 and is transferred to the second heat exchanger 15. After the refrigerant introduced into the exchanger 16 radiates heat through heat exchange, it returns to the compressor 13 via the four-way valve 14 and repeats the circulation cycle. In this heating operation, the first heat exchanger 15 acts as an evaporator, and the second heat exchanger 16 acts as a condenser.

During the cooling operation, by switching the four-way valve 14, the compressed refrigerant flows in the opposite direction to that during the heating operation in a reverse cycle operation, and both heat exchangers 15 and 16 are also switched to have an opposite effect to that during the heating operation.

Here, the first heat exchanger 15 is provided to exchange heat with outdoor air or indoor air that is air that can be thermally contacted with the heat storage agent 4 and is discharged outside.

Further, the second heat exchanger 16 is provided to exchange heat with outdoor air discharged indoors.

The communication ports 6 and 7 formed in the attic A are selectively closed by a damper 9 that is operated manually or automatically, so that outdoor air or indoor air can be selectively introduced into the attic A. In addition, 10 is a column or wall in which a flow path 11 for outdoor air discharged into the room by the heat pump unit 8 is formed so that a plurality of indoor rooms C can be air-conditioned at the same time, and 12 is arranged freely to advance and retreat below or above the special glass 3. It can be operated manually or automatically using the provided light shielding plate.

Next, the action will be explained.

For heating in sunny weather, replace the light shielding plate 12 with special glass 3.
, so that sunlight is irradiated onto the heat storage agent 4 through the special glass 3, and at the same time, the damper 9 closes the communication port 7 side and opens the communication port 6 side.

When the heat pump unit 8 is operated for heating, the first heat exchanger 15 acts as an evaporator.
Outdoor air is guided into the attic A through the communication port 6 by the blower 15a.

In addition, outdoor air is guided to the second heat exchanger 16 by the blower 16a of the second heat exchanger 16, which acts as a condenser. The outdoor air that has flowed into the attic A is heated by the heat storage agent 4 that is constantly supplied with solar heat as long as the weather is clear, and after raising the temperature, the outdoor air is transferred to the first heat exchanger 15.
It exchanges heat with the low-temperature, low-pressure condensed refrigerant inside and is discharged from the ridge to the outside. On the other hand, the outdoor air guided to the second heat exchanger 16 exchanges heat with the high-temperature, high-pressure evaporative refrigerant of the second heat exchanger 16, which acts as a condenser, and becomes warm air that flows through the rear pillar or wall 10. It is discharged into the room C through the passage 11.

Next, for heating in cloudy or rainy weather when solar irradiation energy is low, the light shielding plate 12 is moved to the surface of the special glass 3 so that the heat stored in the heat storage agent 4 does not escape to the outside through the special glass 3 due to radiation. , damper 9
The communication port 7 side is closed by the communication port 6.
Open the side.

Therefore, when the heat pump unit 8 is operated in the same manner as described above, a heating operation is performed using the outdoor air heated by the heat storage agent 4 and raised in temperature as a low heat source.

In this way, during heating, the outdoor air is heated by the heat storage agent 4 regardless of whether it is sunny, cloudy or rainy, and this heated outdoor air is used as a low heat source during heating operation, so even if the temperature of the outdoor air is low. Even a heat pump device with a relatively small capacity can provide sufficient heating output.

Also, if the damper 9 closes the communication port 6 and opens the communication port 7 to perform heating operation,
It uses indoor air as a low heat source and turns outdoor air into warm air.
Heating can be performed by introducing this into the room.

On the other hand, for cooling, the light shielding plate 12 is placed on the surface of the special glass 3 to prevent the inside of the attic A from becoming high temperature, and the damper 9 closes the communication port 6 side to close the communication port 7. Open.

When the heat pump unit 8 is operated for cooling, the first heat exchanger 15 acts as a condenser.
Indoor air is guided to the first heat exchanger 15 via the communication port 7 and the attic A by the blower 15a.
In addition, outdoor air is supplied to the second heat exchanger 1 by the blower 16a of the second heat exchanger 16, which acts as an evaporator.
It leads to 6.

Therefore, the heat pump unit 8 performs cooling operation using indoor air as a high heat source and outdoor air as a low heat source, and also discharges dirty indoor air to the outside and discharges fresh outdoor air into the indoor room C. It has the advantage of cooling and ventilation at the same time. If only ventilation is desired, the compressor 13 of the heat pump unit 8 may be stopped. Furthermore, the low heat source during the cooling operation may not be indoor air, but may be outdoor air that is drawn in through the communication port 6 after the communication port 7 is closed.

<Effects of the invention> As explained above, the present invention includes a heat exchanger that exchanges heat with air that can thermally come into contact with the solar heat storage agent placed in the attic and is discharged outdoors, and a a heat exchanger for exchanging heat with discharged outdoor air; the heat exchanger is provided in the roof ridge part in communication with the attic, and one of the air flow passages provided in the pillar or wall and communicating with the room is connected to the outdoor air and the heat exchanger; Since the heating and cooling device is connected to the heat exchanger to be exchanged, it is possible to operate the heat pump using air heated by the solar heat storage agent as a low heat source during heating. Therefore,
Even if the temperature of the outdoor air becomes low, since the heated air is used as a low heat source, even a relatively small heat pump device can obtain sufficient heating output.
The heat pump device can be made inexpensive. Furthermore, since the heat pump unit is installed on the roof as an idle space, it can fully demonstrate its practical effects, such as ensuring a usable living space.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a building equipped with an air conditioning system according to an embodiment of the present invention, and FIG. 2 is a refrigerant circuit diagram showing the configuration of a heat pump unit in the same embodiment. 2... Roof, 3... Special glass, 4... Heat storage agent, 6, 7... Communication port, 8... Heat pump unit, 9... Damper, 10... Pillar or wall, 1
DESCRIPTION OF SYMBOLS 1... Distribution path, 12... Light shielding plate, 15... First heat exchanger, 16... Second heat exchanger.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A solar heat storage agent is provided on the back side of the roof, at least a portion of which is made of a light-transmitting member, and air that can thermally come into contact with the solar heat storage agent is discharged outdoors. A heat exchanger for exchanging heat with the air discharged into the room, and a heat exchanger for exchanging heat with the outdoor air discharged into the room. A heating and cooling device characterized in that one side of an air flow path that communicates with a room is communicated with a heat exchanger that exchanges heat with outdoor air. (2) The air that can be thermally contacted with the solar heat storage agent and is discharged outdoors is converted into outdoor air or indoor air by a switching means that selectively connects the space behind the roof to the outdoors or indoors. The heating and cooling device according to claim 1, which is a utility model, and is characterized in that the heating and cooling device can be selected. (3) The air conditioning system according to claim 1 or 2, wherein the solar heat storage agent disposed on the back side of the roof is selectively shielded from light by a shutter.