JPH01131838A - Air conditioner - Google Patents

Abstract

PURPOSE:To make it possible to sprinkle drain water readily and uniformly to a heat exchanger by installing a through hole to the bottom plate of a sprinkler, a bulkhead which covers said hole, and mounting a conduit piece, which is approximately inversed U-shaped, and faces said through bottom plate on one end and said through hole on the other end, to said bulkhead provided at a proper distance. CONSTITUTION:A through hole 54 is installed to the bottom plate of a sprinkler 13 which is placed on an indoor heat exchanger 12. A bulkhead 55 which covers the through hole 54 is also installed. To the bulkhead installed is a conduit piece 60, which is substantially reversed U-shaped, faces the bottom plate at one end and the through hole on the other end at a distance with the bulkhead. This construction allows the drain water accumulated in the sprinkler 13 to drop swiftly from the conduit piece 60 into a heat exchanger 12 by capillary phenomenon through a long and narrow gap between the conduit piece 60 and the bulkhead 55. It is, therefore, possible to sprinkle drain water into the heat exchanger 12 swiftly and uniformly, then to humidify as well.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention is an air conditioner in which drain water generated in an outdoor heat exchanger during heating operation is sprinkled onto an indoor heat exchanger to humidify the room. Regarding machines.

(B) Prior Art Conventionally, an air conditioner that uses drain water to humidify a room during heating operation has been disclosed in Japanese Utility Model Publication No. 48-29715.

According to this content, the drain water that has been completely generated in the outdoor heat exchanger is pumped up and guided through a pipe to the water sprinkler above the indoor heat exchanger, and the heat generated by this indoor heat exchanger is used to evaporate the drain water and then indoor I am trying to send it to. The water sprinkler contained water-absorbing material and was designed to uniformly spray drain water over the entire indoor heat exchanger. However, if this drain water contains dust or the like, this dust may adhere to the water-absorbing material and reduce water sprinkling performance.

Further, in the specification of US Pat. No. 3,570,822, a water sprinkler is provided with a large number of water sprinkling holes at the bottom and a weir surrounding the holes, and drain water that overflows the weir is dripped from the water sprinkling holes. There is.

(c) Problems to be solved by the invention In a sprinkler in which the bottom plate is provided with a large number of sprinkler holes and a weir surrounding the holes, the water level of the drain water is higher than the height of the weir. However, the problem is that surface tension causes overflow from the weir, making it difficult to humidify quickly. Another problem is that, for example, if the water sprinklers are installed in a somewhat similar manner, a large amount of drain water drips from the lowered part due to the inclination, making it impossible to spray the drain water uniformly.

The object of the present invention is to quickly and uniformly spray drain water stored in a water sprinkler onto a heat exchanger for humidification.

(d) Means for solving the problem In order to achieve this object, the present invention provides a through hole in the bottom of the water sprinkler and a weir surrounding this hole, one end of which is attached to the bottom plate. A generally inverted U-shaped water guiding piece whose other end faces the through hole is attached with a gap from the weir.

(*) Effect The drain water stored in the water sprinkler is quickly transmitted through the long and narrow gap between the water guide piece and the weir due to capillary action, and is dripped into the heat exchanger from the water guide piece at the through-hole of the sprinkler. .

(F) Embodiment An embodiment of the present invention will be described with reference to the drawings. In Fig. 1, reference numeral 1 denotes an outer box of an air conditioner that is composed of an outer case 2, a decorative case 3, and a bottom plate 4 that is inserted by sliding on the bottom surface of the outer case 2. It is stored.

Reference numeral 5 denotes a casing provided on the bottom plate 4, which has a partition plate 8 that partitions the inside of the outer box 1 into an indoor chamber 6 and an outdoor chamber 7, and has a built-in cross flow fan 9 for indoor use. .

In this indoor chamber 6, an indoor drain pan 10 is provided on the bottom plate 4 and has a drain port 11 communicating with the outdoor chamber 7;
Reference numeral 2 denotes an indoor heat exchanger attached to the front part of the casing 5 and disposed on this indoor drain pan, which acts as an evaporator during cooling operation and as a condenser during heating operation. 13 is a water sprinkler placed on the indoor heat exchanger 12, and 14 is a drain reservoir fixed to the side surface 15 of the casing 5 above the water sprinkler. This reservoir 14 is provided with a first pipe 16 connected to the sprinkler 13, a return pipe 17 connected to the outdoor room 7, and a second pipe 18 from the outdoor room 7.

Then, by the rotation of the cross flow fan 9, indoor air is sucked into the indoor heat exchanger 1 through the suction port 19 of the decorative case 3.
After being heated or cooled in step 2, this indoor air is blown out into the room 21 from the outlet 20 of the decorative case 3.

On the other hand, in the outdoor room 7, 22 is a propeller fan;
3 is a support leg provided on the bottom plate 4 and supports the drive motor 24 of the propeller fan 22; 25 is an outdoor heat exchanger that acts as a condenser during cooling operation and as an evaporator during heating operation; 26 is a part of the bottom plate; An outdoor drain pan with a recessed portion stores drain water generated in the indoor heat exchanger 12 during cooling operation and flowing into the outdoor chamber 7 from the drain port 11 of the indoor drain pan 10, while during heating operation, the outdoor heat exchanger 25 The drain water that is generated and drips is stored.

27 is a drain pump arranged in the outdoor drain pan, and this pump 27 and the drain reservoir 14 are connected to the second pipe 18.
are connected by

Then, as the propeller fan 22 rotates, outdoor air is sucked in through suction ports (not shown) provided on both sides of the outdoor heat exchanger 25, and after being cooled or heated by the outdoor heat exchanger 25, this outdoor air is passed through the discharge port 28. It is discharged to the outside 29.

FIG. 2 is an exploded perspective view showing how the drain pump 27 is attached to the outdoor drain pan 26 of the bottom plate 4.
A frame-shaped mounting leg is fixed to the outdoor drain pan 26 of the bottom plate 4, and water holes 31 are provided on each of its four sides.

A first filter 32 is fitted along the inner surface of the mounting leg 30, and the left and right bent pieces 33 are fitted into the bent pieces 70 of the mounting leg 30. 71 is a lower cover fixed to the bent piece 70 of the mounting leg 30;
Attachment pieces 35 bent inward are provided on the left and right side surfaces of this cover. A horizontal piece 36 of the drain pump 27 is placed on this mounting piece 35. 37 is an upper cover whose front piece 38 is fixed to a front bent piece 39 of the lower cover 71. In this way, the drain pump 27 is covered with two covers 71, 37, and its appearance becomes as shown in FIG.

3 and 4 are a perspective view and a sectional view of the drain reservoir 14. The reservoir 14 has a mounting piece 40 on its bottom surface and is attached to the side surface 15 of the casing 5 (see FIG. 1). This reservoir 14 has a right corner of its bottom surface 41 raised up, and a connection port 44 with a cylindrical partition wall 43 extending further upward from this raised surface 42 is formed. A return pipe 17 (see FIG. 1) is connected to this connection port 44. 52 is a connection port provided on the side surface of the reservoir 14, and a second pipe 18 (see FIG. 1) is connected to this connection port 52. Reference numeral 45 denotes a connection port provided at a corner of the bottom surface of the reservoir 14, and a first pipe 16 (see FIG. 1) is connected to this connection port 45. Also, on this bottom surface 41 there is a rising piece 46.
is formed, and the position of its upper end 47 is the rising surface 4.
It is consistent with 2. A second filter 48 is placed on the rising piece 46 and the rising surface 42. The opening of the second filter 48 is set finer than the opening of the second filter 32. Reference numeral 49 denotes a handle of this filter, and when the filter 48 is attached to the reservoir 14, the handle 49 is located above the side plate 50 of the reservoir 14, making it easy to remove the second filter 48 from the reservoir 14. Reference numeral 51 denotes a notch at a corner of the second filter 48, and the notch 51 is arranged along the cylindrical partition wall 43 of the third connection port 44.

In such a drain reservoir 14, the drain pan 26 of the outdoor chamber 7 is connected from the connection port 52 through the second pipe 18.
Drain water accumulated in the drain water is fed into the drain water, and a second filter 48 removes dust and the like from the drain water, and the drain water flows to the first connection port 45. During the heating operation, the temperature of the outside air is high and the amount of drain water generated in the outdoor heat exchanger 25 increases, and the amount sent to the drain reservoir 14 from the second pipe 18 is increased from the first pipe 16. When the amount of drain water exceeds the amount discharged from the drain reservoir 14, the level of drain water in the drain reservoir 14 gradually rises. When the water level becomes higher than the height of the partition wall 43 of the connection port 44, the drain water is drained from the connection port 44.
4 and is returned to the bottom plate 4 of the outdoor chamber 7 via the return pipe 17. In other words, the drain reservoir 14 prevents more than a certain amount of drain water from being introduced to the sprinkler 13.

5 and 6 are a perspective view and a sectional view of the water sprinkler 13 described above, and 53 is a water injection 1 provided on the side surface of the water sprinkler 13.
1, the first pipe 16 (see FIG. 1) is connected.

Reference numeral 54 denotes a horizontally elongated through-hole provided in the longitudinal direction of the water sprinkler 13, and 55 represents a weir raised above this opening, and the through-hole 54 is surrounded by this weir 55. This through hole 5
There are ten lips 56 (six in the figure) connecting the weirs in the short direction of the weir 4, and a mounting pin 57 is formed on each lip. Reference numeral 58 denotes a water guide member that can be positioned in this through hole. It is composed of a mounting hole 61 that has a shape. A total of 14 water guide pieces are provided. Five such water guiding members 58 (two in the figure) are prepared, and when the mounting hole 61 of each member 58 is inserted into the mounting bin 57 and the water guiding member 58 is combined with the sprinkler 13, its cross section The shape is as shown in FIG. That is, an inverted U-shaped water guide piece 60
and weir 55 are Q, 311111~l, QTIITI (7
) The gap a is maintained, and one end 62 of the water guide piece 6o extends below the through hole 54. In this way, the through hole 54
There are a total of 70 water guide pieces 6o extending downward from the water guide member 58 (because there are 14 water guide pieces 60 in one water guide member 58, and there are 5 such water guide members).

In this sprinkler 13, when drain water flows into the sprinkler 13 from the water inlet 53, the drain water flows along the flow channel 64 formed by the weir 55 and the rising piece 63 on the outside of the sprinkler 13. , join together on the anti-water injection port side 65. When the drain water 66 accumulates in the flow channel 64 in this way, the water level of this drain water 66 rises to the water guide piece 60 as shown in FIG.
It is higher than the other end 67. When this happens, drain water 66 is sucked up by capillary action into the gap a between the weir 55 and the water guiding piece 60, and the sucked up drain water becomes a drop 6B from one end 62 of the water guiding piece 60 and is transferred to the indoor heat exchanger 12.
It is dripped into. Here, since this drain water 66 is guided through the elongated gap a between the water guide piece 60 and the weir 55, even if the drain water in the water sprinkler 13 is contaminated with dirt, this dirt may Even if the gap a with the weir 55 is clogged, the clogged part is only a part of the long and narrow gap, so the drain water 66 is sucked up by capillary action from places other than the clogged part, which hinders the dripping of the drain water 66. There is little risk of this happening.

In addition, there are a total of 70 such water guide pieces 60, and therefore, approximately 70 drops 68 can drip onto the indoor heat exchanger 12, so even if there is the above-mentioned dust clogging, the indoor heat exchanger 12
Drain water is evenly sprinkled on the area. Furthermore, even if the injection of drain water into the sprinkler 13 is stopped, if the water level of the drain water 66 in the sprinkler 13 is higher than the other end 67 of the water guide piece 60, the water in the sprinkler 13 will be drained due to capillary action. Drain water is dripped into the indoor heat exchanger 12. In this way, drain water is prevented from remaining in the sprinkler 13 as much as possible.

FIG. 7 is an explanatory diagram showing the relationship among the above-mentioned drain pump 27, drain reservoir 14, water sprinkler 13, and indoor heat exchanger 12 in this air conditioner. In this figure, during heating operation, drain water generated in the outdoor heat exchanger 25 is sucked up by the drain pump 27 and is led to the drain reservoir 14 from the drain port 69 of the pump through the second pipe 18 as shown by the solid line arrow. I'm scared. When the water level of the drain water in the reservoir 14 reaches a certain level or higher, the drain water is returned to the outdoor drain pan 26 of the outdoor room 7 via the return pipe I7. On the other hand, the drain water in the needle reservoir 14 is led to the water sprinkler 13 via the first pipe 16, and drops 68 from the water guide piece 6o of the through hole 54 of the water sprinkler 13 to the indoor heat exchanger 12.
is dripped on. Here, for example, if the drain water collected in the outdoor drain pan 26 (see Fig. 1) of the outdoor room 7 is contaminated with dirt, etc., this dirt is first removed by the first filter 32, and then the drain pump is pumped. 27 so as not to interfere with its rotation. In addition, the drain water completely discharged from the drain pump 27 may also contain small dust that has passed through the first filter 32, and such small dust is filtered through the second filter 48 (fourth (see figure) and guided to the water sprinkler 13.

In addition, the second pipe 18 is arranged so as to be inclined toward the drain pump 27 side so that there is no trap, so that when the drain pump 27 stops, no drain water remains in the second pipe 18, so that no drain water is left in the second pipe 18. This prevents piping from cracking due to freezing of drain water.

In addition, during cooling operation, please allow the drain pump 27 to stop operating.
The drain water generated in the indoor heat exchanger 12 is received by the indoor drain pan 10, collected from the drain port 11 of this drain pan 10 into the outdoor drain pan 26 of the outdoor room 7, and sent to the outdoor heat exchanger 25 by a splash device (not shown). Sprinkle water.

In FIG. 7, one row of U-shaped tubes 69 on the left side of the indoor heat exchanger 12 is omitted.

(G) Effects of the Invention As described above, according to the present invention, a through hole is provided in the bottom plate of the water sprinkler for sprinkling heat exchanger hedren water, and a weir surrounding the hole is provided, and one end of the weir is connected to the bottom plate. Since the approximately inverted U-shaped water guiding piece whose other end faces the through hole is attached with a gap between it and the weir, drain water can be quickly and uniformly sprayed onto the heat exchanger.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view of an air conditioner, FIG. 2 is an exploded perspective view of parts attached to a drain pump, and FIG. 3 is a perspective view of a drain reservoir. FIG. 4 is a sectional view of the drain reservoir, FIG. 5 is an exploded perspective view of the water sprinkler, FIG. 6 is a sectional view of the water sprinkler, and FIG. 7 is an explanatory view showing the drain treatment device. 6...Indoor chamber, 7...Outdoor chamber, 12...
Indoor heat exchanger, 13... Water sprinkler, 16.18.
・・Pipe, 25・Outdoor heat exchanger, 26・
...Drain pan, 54...Through hole, 55...
Weir, 60...Water guide piece, a...Gap.

Claims (1)

[Claims] 1) The interior of the casing is divided into an outdoor chamber and an indoor chamber, and an outdoor heat exchanger and a drain pan for receiving drain water dripping from the heat exchanger are arranged in the outdoor chamber, while the indoor chamber The air conditioner is equipped with an indoor heat exchanger and a water sprinkler for sprinkling drain water onto the heat exchanger, and the drain water collected in the drain pan during heating operation is guided to the water sprinkler via a pipe. , the bottom plate of this sprinkler has a through hole,
A weir surrounding the opening is provided, and a substantially inverted U-shaped water guide piece is attached to the weir, with one end facing the bottom plate and the other end facing the through hole, with a gap between the weir and the weir. harmonizer.