JPH0338490B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a residential air conditioning system, and in particular to an air conditioning system using a split type air conditioner that is separated into two units, an outdoor unit and an indoor unit, and connected via refrigerant gas piping. This is related to the improvement of

In a split type air conditioner, the compressor, condenser, and blower are installed outdoors as an outdoor unit. In this case, as a matter of course, not only does it require more space to install the outdoor unit, but it also has the disadvantage that the overall appearance of the mansion is not good.

By the way, the ambient temperature of the outdoor unit should be lower when the air conditioner is in use for cooling.
Also, when using a heat pump for heating, the higher the price, the better. Outdoors does not quite meet this condition.

On the other hand, the temperature under the floor of a house is lower than the temperature outside in summer, and the temperature in the attic is higher than that outside in both summer and winter.

Note that the condenser of the outdoor unit is more accurately called an outdoor heat exchanger than a condenser, since the air conditioner performs a condensing action when the air conditioner is used for cooling, but performs an endothermic action when it is used for heating. Since this outdoor heat exchanger is also called a condenser based on cooling, it will be simply referred to as a condenser hereinafter.

Furthermore, current houses are generally only connected to the outside air through small ventilation holes both under the floor and in the attic, which cannot be said to be sufficient from the viewpoint of ventilation.

In view of the current situation of split type air conditioners and houses, the present invention does not require a special installation space for an outdoor unit, and is capable of exchanging heat with air that is relatively low temperature in the summer and relatively high temperature in the winter. To provide an air conditioning system for a residence, which can ventilate the underfloor and attic of a house while at the same time not impairing the appearance of the house.

That is, the present invention provides a residential air conditioning system using a split type air conditioner with a compressor, a condenser, and a blower as outdoor units, in which a duct is provided vertically inside the house and leads to the attic and under the floor. The compressor, condenser, and blower are installed in a series of air passages consisting of the attic, ducts, and under the floor, and the piping is connected to the indoor unit in the house. This is a residential air conditioning system characterized in that wiring is accommodated within the duct.

According to the present invention, the compressor, condenser, and blower that were previously placed outdoors are installed indoors, so
Not only does it improve the overall appearance of the mansion and requires no outdoor installation space, but when heating is used in the winter, the high-temperature air in the attic is exchanged with the condenser, improving the efficiency of heat pump heating. This system has various advantages such as being able to improve the cooling effect by exchanging relatively low temperature air under the floor with a condenser, and also being able to ventilate the attic and under the floor. Of course, there is also the advantage that the piping and wiring between indoor units can be accommodated within the duct.

An embodiment of the present invention will be described in detail below with reference to the drawings.

The figure shows a sectional view of the entire house when the present invention is implemented in a two-story house. Referring to the same figure, house 1
A vertical duct 4 is provided to extend vertically within the house so as to communicate between the attic 2 and the underfloor 3. The attic 2 is communicated with the outdoors through a roof opening 6 provided in the eaves of the roof 5. Further, the underfloor 3 is communicated with the outside air through a vent 8 formed in the foundation 7, as usual. Therefore, a series of air paths consisting of the ventilation opening 6, the attic 2, the duct 4, the underfloor 3, and the ventilation opening 8 communicate with the outside air.

In the duct 4, there is a compressor 9, which is an outdoor unit of a split type air conditioner, and a condenser 1.
0, a blower 11 is installed, and a refrigerant gas pipe 14 is routed through the duct 4 to an indoor unit 13 including an evaporator and a blower installed in a room 12. Electrical wiring is also accommodated within this duct 4.

The direction of rotation of the blower 11 for the compressor 9 and condenser 10 may be switched so that the air flow in the duct 4 is downward during heating and upward during cooling.

With this configuration, when air conditioning is used in the summer, relatively low-temperature air under the floor passes through the compressor 9 and the condenser 10, cooling the compressor 9 and cooling the condenser 10.
Because the system exchanges heat with the air conditioner, the cooling efficiency in the summer is improved compared to conventional installations outdoors. Furthermore, the air that has passed through the condenser 10 passes through the attic 2 and is blown out from the eave ventilation opening 6.

The temperature in the attic 2 is heated by solar heat, so
During the summer, temperatures are usually higher than outdoors.
For this reason, the cooling effect of the room 12 directly below is inhibited, but in the present invention, the air in the attic is discharged from the ventilation opening 6 by the air sent from under the floor through the duct 4 by the blower 11. , attic 2
temperature rise is also suppressed, and therefore, this also brings about an improvement in cooling efficiency.

Note that it is preferable that the outlet of the duct 4 to the attic 2 be located as high as possible in the sense that higher temperature air is discharged to the outside.

When heating is used, the blower 11 rotates in the opposite direction and relatively high temperature air from the attic passes through the condenser 10, thereby improving the heating efficiency of the heat pump type. In this case, in the heat pump of a split type air conditioner, the flow of refrigerant is reversed by a four-way valve, as in the conventional case.
As a result, the condenser 10 is used as an evaporator.

Note that the temperature under the floor is higher than that outdoors in winter, so even if you do not change the direction of rotation of the blower 11 and always create a flow of air from under the floor to the attic, the outdoor unit will not work as usual. The efficiency can be improved compared to when the system is installed outdoors.

If the blower 11 can be operated independently,
Even when cooling and heating are not in use, such as in spring and autumn, the blower 1
1 can be rotated to ventilate the attic and under the floor, which is preferable from the viewpoint of the lifespan of the house.

The installation location of the compressor 9, condenser 10, and blower 11 is not limited to inside the duct 4, but may also be under the floor or in the attic. It is necessary to create a road and install it within it.

As is clear from the above embodiments, according to the present invention, a duct that vertically communicates with the attic and under the floor is provided in the house, and a ventilation hole is provided that communicates the attic and the under floor with the outside air, and the attic,
An outdoor unit consisting of the above-mentioned compressor, condenser and blower is installed in a series of air passages consisting of ducts and under the floor. During cooling, low-temperature air under the floor is guided to the compressor and condenser, and during heating, high-temperature air in the attic is installed. The blower is a reversible transfer fan, and the piping and wiring between the indoor units in the house is accommodated in the duct so that the air is guided to the condenser. During cooling, relatively low-temperature air under the floor is guided to the compressor and condenser to improve cooling performance, and during heating, relatively high-temperature air from the attic is guided to the condenser to improve heating performance. In addition, there is no need to install an outdoor unit outdoors, and there is also the effect that ventilation can be carried out under the floor and attic at the same time without damaging the overall appearance of the room. Furthermore, the piping to the indoor unit is housed within the duct, so the exterior appearance is not compromised. In addition, since cold air flows through the duct during cooling and warm air flows during heating and hits the piping, cooling efficiency and heating efficiency are good.

[Brief explanation of the drawing]

The figure is a longitudinal sectional view of a house in which the present invention is implemented. 1... Second floor, 2... Attic, 3... Under the floor, 4
...Duct, 6...Ventilator, 8...Vent, 9...
...Compressor, 10...Condenser, 11...Blower, 1
3... Indoor unit, 13... Piping.

Claims (1)

[Claims] 1 The compressor and outdoor heat exchanger of a heat pump, which has a four-way valve that reverses the flow of refrigerant so that the outdoor heat exchanger can be used as a condenser and an evaporator, as well as a blower separate from the heat pump, are installed together. In a residential air conditioning system using a split type air conditioner with two outdoor units, a duct is provided inside the house that leads vertically to the attic and under the floor, and a ventilation hole is provided to communicate the attic and under the floor with outside air. ,
The outdoor unit is installed in a series of air channels consisting of a duct and under the floor, and the piping and wiring between it and the indoor unit in the house is housed in the duct, and during cooling, low-temperature air under the floor is transferred to the compressor and For residential use, the blower of the outdoor unit is a reversible transfer fan that operates independently of the heat pump so that high-temperature air in the attic is guided to the outdoor heat exchanger during heating. air conditioning system.