JPH0424609B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an indoor air conditioner, and more particularly to an indoor air conditioner equipped with a water-cooled condenser and an air-cooled condenser. Regarding the improvement of

(Prior Art) Conventionally, an indoor air conditioner has a compressor 2, a compressor 2,
Condenser 3, pressure reducing device 4 such as capillary reach tube
and an evaporator 5 are connected in sequence to form a refrigeration cycle.

This condenser 3 is a water-cooled condenser, and a water tank 6
The water inside is cooled by being sprayed by a water spray fan 7, and acts as a condenser.

Further, as shown in Japanese Utility Model Application No. 55-174528, a part of the condenser is water-cooled and the rest is air-cooled.

This has a configuration in which air that has passed through a water-cooled condenser for heat exchange is guided back to an air-cooled condenser.

(Problem to be Solved by the Invention) However, in these conventional devices, the humidity of the exhaust air discharged around the water-cooled condenser (condenser 3) is over 100%, so the exhaust passage Condensation formed near the exit, and there was a risk that the condensate would drip outside and wet the building.

In addition, especially in the latter case, the high-temperature, high-humidity exhaust air that has passed through the water-cooled condenser is discharged through the air-cooled condenser.
There was a problem that the heat exchange efficiency of the air-cooled condenser was low.

Furthermore, since the air-cooled condenser is exposed to high-temperature, high-humidity air, there is a problem in that the air-cooled condenser is susceptible to corrosion.

The present invention has been made in consideration of the above circumstances, and it effectively prevents the generation of drain water near the exit of the exhaust passage, improves the heat exchange efficiency of an air-cooled condenser, and An object of the present invention is to provide an air conditioner that can prevent corrosion from occurring in a condenser.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention comprises a condenser in a refrigeration cycle consisting of an air-cooled condenser and a water-cooled condenser, and the water-cooled A condenser is disposed below the air-cooled condenser, and an air intake passage for heat exchanged by the air-cooled condenser and an air intake passage for heat exchanged by the water-cooled condenser are arranged. The air that is separated and arranged independently, and that is mixed with the air that has been heat exchanged by the air-cooled condenser and the air that has been heat-exchanged by the water-cooled condenser, is mixed through a common exhaust passage. To provide an air conditioner characterized in that an exhaust means for exhausting heat exchange air to the outside is provided.

(Function) With the above configuration, the air heat-exchanged by the air-cooled condenser and the air heat-exchanged by the water-cooled condenser are mixed and discharged to the outside through a common exhaust passage. As a result, the humidity of the air discharged to the outside is lower than when it passes through the water-cooled condenser.

Furthermore, the suction passages to the water-cooled and air-cooled condensers are separated and formed independently, allowing the high-temperature, high-humidity air that has been heat-exchanged in the water-cooled condenser to pass through the air-cooled condenser. There's nothing to do,
The heat exchange efficiency of the air-cooled condenser can be increased, and the air-cooled condenser is not exposed to high-temperature, high-humidity air.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIG. 2, 11 is a case of the main body of an indoor air conditioner, and inside this case 11 are a compressor 12, an air-cooled condenser 13, a water-cooled condenser 14, and a depressurizer (not shown) that constitute a refrigeration cycle. A device and an evaporator 15 are respectively provided.

Further, the inside of the case 11 is partitioned into an upper chamber 17 and a lower chamber 18 by a partition plate 16, and an evaporator 15 and an indoor fan 19 are disposed in the upper chamber 17.

On the other hand, a partition wall 41 is formed in the lower chamber 18 to partition the inside of the lower chamber 18 into upper and lower parts, and an air-cooled condenser 13 and a fan motor 20 are disposed on the upper side, and a compressor 12 is disposed on the lower side. , a water-cooled condenser 14, etc., are respectively provided.

Further, the air-cooled condenser 13 is disposed below the evaporator 15 and is formed integrally with the evaporator 15. That is, a common heat exchange fin is attached to each refrigerant pipe of the evaporator 15 and the air-cooled condenser 13. Drain condensed on the evaporator 15 side of this fin drips along the surface of this fin toward the air-cooled condenser 13 side.

Furthermore, the surface of the fins of this air-cooled condenser 13 is subjected to a hydrophilic treatment. The drain adhering to the surface of the fins of the air-cooled condenser 13 is distributed substantially uniformly over the entire surface of the fins.

The fan motor 20 is provided with a first rotating shaft 20a that projects into the upper chamber 17 and a second rotating shaft 20b that projects into the lower chamber 18.
An indoor fan 19 is attached to the rotating shaft 20a of the
A first exhaust fan 25 and a second exhaust fan 26 are attached to the second rotating shaft 20b.

The indoor fan 19 is covered by an indoor fan casing 21, and the first exhaust fan 25 and second exhaust fan 26 are covered by exhaust fan casings 24a and 24b formed on the partition wall 41, respectively. There is.

In this case, the intake port of the exhaust fan casing 24a is opened above the partition wall 41, the intake port of the exhaust fan casing 24b is opened below the partition wall 41, and the exhaust fan casings 24a, 24
One end of an exhaust duct (exhaust passage) 29 is connected to the discharge port b. An exhaust hose 31 is connected to the other end of the exhaust duct 29 via an exhaust port 30 formed in the case 11.

Further, in the lower chamber 18, an air suction passage 13A is provided above the partition wall 41 for heat exchange by the air-cooled condenser 13, and an air intake passage 13A is provided for heat exchange by the water-cooled condenser 14 below the partition wall 41. air intake passage 14A
are formed independently, and a suction port 32 of the suction passage 13A to which an exhaust hose 33 is connected is formed in a portion of the case 11 that faces the air-cooled condenser 13.

Note that the suction port of the suction passage 14A on the side of the water-cooled condenser 14 is formed, for example, at the lower side of the case 11.

The water-cooled condenser 14 consists of a refrigerant tube winding section 42 in which a refrigerant tube is wound in a substantially coil shape, and a substantially cylindrical cover member 43 is provided around the refrigerant tube winding section 42. 42.
The upper end of this cover member 43 is fixed around the intake port of the lower exhaust fan casing 24a.

In addition, a water spray fan 27 fixed to the rotating shaft 20b of the motor 20 is provided at the center of the refrigerant winding portion 42.
is arranged and is adapted to be rotated together with a first exhaust fan 25 and a second exhaust fan 26 by a motor 20.

In this case, the lower end of the watering fan 27 is connected to the water tank 28.
The cover member 43 is immersed in water contained in the cover member 43.
The lower end portion of the water tank 28 is disposed at a position separated from the water surface by an appropriate distance. Note that 34 is an air filter disposed between the suction holes 22 of the upper chamber 17 and the evaporator 15, and 35 is a tank that supplies water to the water tank 28.

Next, the operation of the above configuration will be explained.

First, when the power switch of the air conditioner is turned on, the compressor 12 and the fan motor 20 are driven, and the refrigerant circulates in the refrigeration cycle, and the indoor fan 19, the first exhaust fan 25, and the second exhaust fan 25 are turned on. The fan 26 and the sprinkler fan 27 are each driven to rotate.

Then, indoor air is sucked into the upper chamber 17 from the suction holes 22 of the case 11 by the indoor fan 19, and the cold air cooled by heat exchange with the refrigerant in the evaporator 15 is sent to the blowout holes of the case 11. 23...is blown into the room.

In addition, outdoor air is sucked into the suction passage 13A on the air-cooled condenser 13 side by the first exhaust fan 25 through the exhaust hose 33, and the air-cooled condenser 13
Exhaust air heated by heat exchange with the refrigerant inside is introduced into the exhaust duct 29.

Furthermore, the air flowing into the suction passage 14A of the water-cooled condenser 14 from the suction port of the case 11 by the sprinkler fan 27 connects the lower end of the cover member 43 and the water tank 28 as shown by the arrow in FIG. The air flows into the interior of the cover member 43 through the gap between the ends, passes around the refrigerant pipe winding part 42 of the water-cooled condenser 14, becomes highly humid air, and is introduced into the exhaust duct 29.

In the exhaust duct 29, an air-cooled condenser 1
Relatively low humidity exhaust air introduced from the suction passage 13A side of No. 3 and the suction passage 14 of the water-cooled condenser 14
After being mixed with the high-humidity exhaust air introduced from the A side, the air is discharged outside through the exhaust hose 31.

In the case of the above configuration, the air-cooled condenser 13
The relatively low humidity exhaust air that has passed around the water-cooled condenser 14 and the 100% or more high quality exhaust air that has passed around the water-cooled condenser 14 are respectively sent into the exhaust duct 29 and mixed. Because of this, the relative humidity of the exhaust air discharged outside through the exhaust hose 31 can be suppressed to about 70 to 80%.

Therefore, the relative humidity of the exhaust air guided through the exhaust passage can be reliably lowered than that of the exhaust air sent from the water-cooled condenser 14 side.
It is possible to reliably prevent drainage from occurring near the exit of the exhaust passage.

In addition, since the air suction passage 13A for which heat is exchanged by the air-cooled condenser 13 and the air suction passage 14A for which heat is exchanged by the water-cooled condenser 14 are separated and formed independently, Unlike in the past, the highly humid air that has been heat exchanged in the water-cooled condenser 14 does not pass around the air-cooled condenser 13, and the heat exchange efficiency of the air-cooled condenser 13 can be increased. It is possible to prevent corrosion caused by exposing the air-cooled condenser 13 to high-temperature, high-humidity air.

Furthermore, since the heat exchange efficiency of the air-cooled condenser 13 can be increased, the same heat exchange capacity as the conventional one can be obtained by using the air-cooled condenser 13 and the water-cooled condenser 14, which are smaller than the conventional ones. type condenser 1
In addition to being able to reduce the amount of water used in step 4, it is also possible to downsize the entire air conditioner.

In addition, the air-cooled condenser 13 is disposed below the evaporator 15, and condensate condensed on the evaporator 15 drips into the air-cooled condenser 13, so that the heat dissipation effect of the air-cooled condenser 13 can be improved. can be increased. In this case, since the air-cooled condenser 13 has been subjected to hydrophilic treatment, the dripped condensate onto the air-cooled condenser 13 can be uniformly dispersed, further enhancing the heat dissipation effect of the air-cooled condenser 13. be able to.

In addition, when the water in the water tank 28 runs out, the refrigeration cycle can be driven by the air-cooled condenser 13 alone, and the refrigeration cycle can also be operated without water.

[Effects of the Invention] According to the present invention, exhaust air that has passed separately around each of the air-cooled and water-cooled condensers is sent into the exhaust passage and mixed. The generation of drainage near the exit of the passage can be effectively prevented.

In addition, the suction passage for air that exchanges heat with the air-cooled condenser and the suction passage for air that exchanges heat with the water-cooled condenser are separated and formed independently. High-temperature air that has undergone heat exchange in the water-cooled condenser no longer passes around the air-cooled condenser, improving the heat exchange efficiency of the air-cooled condenser and reducing the overall size of the device. be able to.

Furthermore, since the air-cooled condenser is not exposed to the high-temperature, high-humidity air that has passed through the water-cooled condenser, corrosion of the air-cooled condenser can also be prevented.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view showing a schematic configuration of a conventional example, and FIG. 2 is a vertical sectional view showing a schematic overall configuration of an embodiment of the present invention. 13... Air-cooled condenser, 13A... Air-cooled condenser suction passage, 14... Water-cooled condenser, 14A...
... Suction passage of water-cooled condenser, 15 ... Evaporator, 2
9... Exhaust duct (exhaust passage), 31... Exhaust hose (exhaust passage).

Claims (1)

[Claims] 1 The condenser in the refrigeration cycle is composed of an air-cooled condenser and a water-cooled condenser, and the water-cooled condenser is disposed below the air-cooled condenser, and the air-cooled condenser exchanges heat. an air intake passage;
A suction passage for air heat exchanged by the water-cooled condenser is separated and formed independently, and the air heat exchanged by the air-cooled condenser and the water-cooled condenser are separated from each other. An air conditioner characterized in that an air conditioner is provided with an exhaust means for exhausting heat exchange air to the outside through a common exhaust passage in a mixed state with heat exchange air.