JPS63197832A - Air conditioner - Google Patents

Abstract

PURPOSE:To make possible easy construction of an air conditioner even after the completion of a building by a method wherein a double-pipe type heat exchanger having a heat exchanging coil with a spine fin wound spirally between the outer and inner double pipes is installed vertically along the outer wall of the building. CONSTITUTION:When a heat source device 15 is operated, a refrigerant passing through a refrigerant compressor 16, a condenser 17, and an expansion valve 19 vaporizes in a spiral heat exchanging coil, 9 flows through a piping 12 and returns to the compressor 16. On the other hand, when the air blower 24 of an indoor circulation unit 25 is operated, room air flows into a double pipe type heat exchanger 5 through a suction air blasting pipe 23, an air circulation hole 21 at the outer wall 4 of a building, and a connection pipe 27 and is heat-exchanged with the refrigerant in the coil 9 through a spine fin 10 and then is blown off into a room through a connection pipe 26, an air circulation hole 20, and a discharge air, blasting pipe 22. A part of the air is bypassed with an open and shut damper 31 and fresh air can be introduced with the switchover damper 30 of a ventilating device 29 and condensed water is drained out from a cap 32, Thus, a device can be easily constructed even after the completion of the building.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air conditioner suitable for residential use in which a heat source device is installed outdoors.

Conventional technology As shown in Japanese Utility Model Application Publication No. 57-160033, in the past, an indoor unit was installed indoors, an outdoor unit was installed under the floor, and the two were connected by refrigerant piping. Types with pipes and horizontal pipes are known.

Therefore, in this conventional example, the outside air on the ceiling or the cold heat underground can be used as a heat source through the vertical and horizontal pipes.

Problems to be Solved by the Invention However, in the above conventional example, the vertical and horizontal pipes themselves do not have a heat exchange function, and it is extremely difficult to install them after the house is constructed. This required refrigerant piping to connect the outdoor unit.

The present invention has been made in view of these points, and it is an object of the present invention to provide an air conditioner that is easy to install and has high heat exchange efficiency.

Means for Solving the Problems In order to achieve the above object, the present invention provides a double-tube heat exchanger in which a heat exchange coil having spine fins is spirally arranged between the inner and outer double tubes. Installed along the outer wall of the house,
The double-tube heat exchanger is connected to a circulation port on the outer wall, and the heat exchange coil is connected to piping of a heat source device.

Effect According to the above configuration, indoor user-side circulating air flows spirally along the heat exchange coil, exchanges heat with the medium of the heat source device via the spine fins, becomes conditioned air, and is discharged indoors again. Ru. Also, part of the circulating air can be bypassed through the entire inner tube, and it is also possible to mix the conditioned air with outside air taken in from the upper end of the double-pipe heat exchanger.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. 1
is a house, and a machine room 2 is formed under the floor in one corner of the house. 3 is a door of the machine room 2 provided on the outer wall 4 of the house 1. Reference numeral 5 denotes a double-tube heat exchanger erected along the outer wall 4, and is attached to the outside W4 by support devices 6, 6. The double tube heat exchanger 5 includes an inner tube 7, an outer tube 8, both tubes 8, and both tubes 7,
It consists of a heat exchange coil 9, etc., arranged in a spiral manner between 8 and 8 spaces. 1o is a spine fin provided spirally around the outer periphery of the heat exchange coil 9. 11 is a heat insulating material covered on the outside of the outer tube 8, and 12 is a refrigerant return pipe provided in the heat insulating material 11. One end 13 of this return pipe 12
is connected to the upper end of the heat exchange coil 9, and the other end 14 is connected to the refrigerant compressor 1 of the heat source device 16 installed in the machine room 2.
6. The heat source device 15 is the refrigerant compressor 1
6 and a condenser 17, the outlet of the condenser 17 is connected to a pipe 18.
is connected to the lower end of the heat exchange coil 9 via an expansion valve 19. Further, 20 is an air circulation port on the discharge side provided above the outer wall 4, and 21 is an air circulation port on the suction side provided below. Reference numeral 22 denotes a discharge blower pipe connected to the air circulation port 20 on the discharge side and arranged on the ceiling of the room, and reference numeral 23 denotes a suction blower pipe connected to the air circulation port 21 on the suction side and arranged under the floor. The suction blow pipe 23 is provided with a blower 24, which together with the above-mentioned blow pipes 22 and 23 constitutes an indoor circulation unit 25.

26 is a connecting pipe that connects the upper part of the outer tube 8 and the air circulation port 20, and 27 is a connecting tube that connects the lower part of the outer tube 8 and the air circulation port 21. Both connecting pipes 26 and 27 are also covered with a heat insulating material 28.

29 is a ventilation device provided at the upper end of the double pipe heat exchanger 5, and 3o is a switching damper of the ventilation device provided at the upper end of the outer tube 8. Further, 31 is an opening/closing damper provided at the lower end opening of the inner tube 7.

Further, a drain receiving cap 32 is removably provided at the lower end of the double pipe heat exchanger 5.
A drain hose 34 is provided for discharging drain into the water collection tank 33.

In the above configuration, when the heat source device 16 is operated, the refrigerant compressor 16. Condenser 17. The refrigerant that has passed through the expansion valve 19 flows into the heat exchange coil 9, where it is evaporated, and then circulated back to the refrigerant compressor 16 through the return pipe 12. On the other hand, when the blower 24 of the indoor circulation unit 25 is operated, indoor air is sucked into the suction blow pipe 23 and the air circulation port 21.
It is sucked into the double pipe heat exchanger 5 through the connecting pipe 27.

Next, the refrigerant flows through the spiral air path formed by the heat exchange coil 9 between the inner and outer tubes 7 and 8 as shown by the solid arrow, and heat exchange with the refrigerant in the heat exchange coil 9 is completed via the spine fins 1o. . The conditioned air thus obtained is transferred to the connecting pipe 26. The air is discharged into the room again through the air circulation port 20° and the discharge pipe 22. In addition, the opening/closing damper 31 at the lower end of the inner pipe 7
When it is opened, a part of the air passes through the inner tube 7 as indicated by the dotted arrow and bypasses, and merges with the air indicated by the solid arrow at the upper end.

Similarly, when the switching damper 30 of the ventilation system 29 is opened as shown by the broken line, fresh outside air is taken in.

Further, condensed water generated within the double pipe heat exchanger 6 naturally flows downward and is drained from the cap 32 through the drain hose 34. Similarly, dirt in the circulating air accumulates at the lower end of the outer tube 8, and is removed by removing the cap 32. As is well known, the heat source device 16 may be a heat pump device that circulates the refrigerant in a reverse cycle.

According to the above embodiment, the double pipe heat exchanger 5 is connected to the outer wall 4 of the house.
Since it is erected along the road, construction is easy and it has the advantage that it can be carried out even after the house is constructed. In addition, to assemble the double-tube heat exchanger 6, all that is required is to insert the inner tube 7 with the heat exchange coil 9 spirally wound into the outer tube 8, resulting in extremely good workability. Since it has a spiral shape and has the spine fins 10, even if the height of the outer tube 8 is relatively small, a sufficient heat exchange area can be obtained, and high heat exchange performance can be obtained. Also, by operating the switching damper 30, fresh outside air can be taken in from the ventilation system 29, and by operating the opening/closing damper 31, some air can be bypassed by passing through the entire inner pipe 7. It is possible to secure the air volume. Also, dirt and drain water can be easily disposed of using the cap 32 at the lower end.

Effects of the Invention As described above, the air conditioner of the present invention uses a double-tube heat exchanger that is formed by spirally disposing a heat exchange coil having spine fins between the inner and outer double tubes. The double-pipe heat exchanger is connected to the air circulation port on the outer wall, and the heat exchange coil is connected to the piping of the heat source equipment, making installation work easy and making it easy to install. It can be easily installed even after the construction of the inner pipe, drainage water and garbage can be easily treated from the bottom end, and a sufficient heat exchange area can be obtained compared to the height of the outer pipe. By bypassing a portion of the circulating air, excellent effects such as a sufficient amount of airflow can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a house equipped with an air conditioner according to an embodiment of the present invention, FIG. 2 is a side view of the house, and FIG. 3 is a sectional view of the same essential parts. 1... House, 4... Outer wall, 5...
...Double pipe heat exchanger, 7...Inner tube, 8...
... Outer tube, 9. Old... Heat exchange coil, 1o...
- Spine fin, 15...Heat source device, 18.
...Piping, 20...Discharge side circulation port, 21
......Suction side circulation port, 26...Indoor circulation unit. Fig. 1/ - 4- Outer wall 5- 2111 IF type Tsurugo instrument

Claims (1)

[Claims] A double tube consisting of a heat-insulating coated outer tube, an inner tube inserted into the outer tube with both ends open, and a heat exchange coil having spine fins spirally arranged within the space between the two tubes. The above-mentioned double pipe type heat exchanger is equipped with an indoor circulation unit that circulates conditioned air indoors through suction circulation ports and discharge circulation ports provided on the outer wall of the house, and a heat source device installed outdoors. A heat exchanger is installed upright along the outer wall of the house, and its upper and lower ends are connected to the discharge circulation and suction circulation ports, respectively, and the heat exchange coil is connected to the piping of the heat source device. Characteristic air conditioner.