JPH09166334A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and assuredly drain water from a second heat exchanger provided by dividing in front and rear parts in the air duct of an indoor unit. SOLUTION: Drain water from a second heat exchanger 21 is received by a second drain pan 23 below the second heat exchanger 21 provided in the rear part of a blower fan, and collected to both ends by a drain water guide passage 28 provided in a lower part and inclined down rightward and leftward from drain water drop ports 25 at the center and both parts of the bottom surface of the drain pan. Then, the drain water is collected to the first drain pan 22 of a first heat exchanger 17 by drain water guide trough parts 29 at both ends and drained by a drain hose 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a structure in which heat exchangers are separately arranged in front of and behind a blower fan in order to enhance heat exchange capacity, and particularly, those heat exchangers that are spatially separated from each other. The present invention relates to an air conditioner provided with a drain water drainage structure suitable for draining drain water from a vessel.

[0002]

2. Description of the Related Art In an air conditioner in which an outdoor unit and an indoor unit are separated, the structure of the indoor unit is generally such that an air suction port is formed from the front surface to the upper portion, and the sucked and heat-exchanged air is directed obliquely downward. It has an air outlet that blows out, and a heat exchanger and a blower fan are arranged in that order in an air passage formed inside so as to connect the air inlet and the air outlet. Here, the heat exchanger arranged at the back position of the air intake port can take in a large amount of heat exchange area with the intake air in all directions,
In many cases, it is shaped like a letter without covering the front and the top of the blower fan.

In the past, many heat exchangers having this shape were mounted, but in recent years, in order to increase the heat exchange capacity while reducing the thickness of the indoor unit, this main heat exchanger is used. In addition to the first heat exchanger, another second heat exchanger is arranged behind the blower fan, and the first heat exchanger and the second heat exchanger are divided into two so as to sandwich the blower fan. It is configured to be surrounded by a heat exchanger so that the air sucked by the blower fan can be effectively used for heat exchange without waste.

By the way, when the air conditioner is operated,
Although it is necessary to treat the drain water generated in the heat exchanger, a general treatment method is to install a drain pan that receives the drain water that drops from the heat exchanger, and drain the drain water collected in the drain pan with a drain hose. There is.

Therefore, also in the case of the indoor unit equipped with the two heat exchangers described above, the first heat exchanger, which has a large heat exchange area and a large amount of drain water, conventionally has a sufficient depth in its lower portion. A drain pan for the first heat exchanger, which has a configuration capable of storing a large amount of drain water, is arranged. On the other hand, for the second heat exchanger located in the rear part of the unit internal space, its heat exchange capacity is small and the amount of drain water produced is expected to be small. The current situation is that a drain pan having a simple shape that is not taken into consideration (for example, a V-shaped groove shape) is provided.

[0006]

However, even though the drain water amount is small, the drain water treatment for the second heat exchanger is not performed by a conventional drain pan having a V-shaped groove shape and the like, which does not consider the stored amount. , If the inside of the drain pan is clogged with dust scales such as dust or dirt, the problem of incomplete drainage, or the excessive accumulation of mold and the formation of mold and the like causing unhygienic air to be discharged will occur. .

Further, if the drain pan is simply arranged under the second heat exchanger, the drain water hose for drainage is
There were also problems such as the difficulty of the work of piping inside the unit, which is difficult to reach, and the remaining structural complexity.

The present invention has been made in view of the above-mentioned points, and the first heat exchanger in the front is opposed to the second heat exchanger in the rear.
To provide an air conditioner capable of surely and smoothly draining drain water by adopting a drainage method in which drain water from the heat exchanger is guided to a drain pan of the first heat exchanger and concentratedly drained. With the goal.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention uses a blower fan provided in an air passage formed inside a main body which connects an air intake port and an air discharge port to supply indoor air to the indoor air. It is configured to discharge heat from the air outlet after being heat-exchanged with a heat exchanger arranged on the back side of the air suction port, and the heat exchanger is provided with a first heat exchanger and a second heat exchanger so as to sandwich the blower fan. In an air conditioner divided into a heat exchanger, a first drain pan provided along a lower longitudinal direction of the first heat exchanger for receiving drain water dripping from the first heat exchanger; 2 A second drain pan provided along the lower longitudinal direction of the heat exchanger to receive the drain water dripping from the second heat exchanger, and the drain water in the drain pan provided on the bottom surface of the second drain pan downward Multiple drops to drop The drain water is located at a position higher than the water drop opening and the first drain pan, and is opposed to the drain water drop opening of the second drain pan to accommodate the drain water falling from the drain pan, and collect the drain water at both longitudinal ends. A drain water guide channel and a drain water introducing trough section for guiding the drain water collected at both longitudinal end portions of the drain water guide channel to the first drain pan are provided.

According to a second aspect of the present invention, the room air is arranged at the rear position of the air suction port by a blower fan provided in an air passage formed inside the main body which connects the air suction port and the air discharge port. The heat exchanger is configured to discharge heat from the air outlet after heat exchange with the heat exchanger, and the heat exchanger is divided into a first heat exchanger and a second heat exchanger so as to sandwich the blower fan. In the air conditioner, a first drain pan provided along the lower longitudinal direction of the first heat exchanger to receive drain water dripping from the first heat exchanger, and a lower longitudinal direction of the second heat exchanger. A second drain pan made up of an inverted trapezoidal-shaped container for receiving drain water dripping from the second heat exchanger, and provided at least near both ends and near the center of the bottom surface of the second drain pan. Do in the drain pan A plurality of drain water chute for dropping the emissions water downward, disposed higher than the first drain pan position,
It also has a mountain-shaped structure that accommodates the drain water that falls from this drain pan facing the drain water drop opening of the second drain pan, and that has a mountain-shaped configuration in which the center part is made slightly higher and the apex extends downwardly to both end sides. Equipped with a drain water guide passage for collecting drain water to both ends thereof and a drain water introduction trough portion for guiding the drain water collected at both longitudinal end portions of the drain water guide passage to the first drain pan. Is.

Further, according to a third aspect of the present invention, the apex portion of the mountain-shaped drain water guide passage is provided with respect to the first drain pan with respect to the drain water drop port provided near the center of the bottom surface of the second drain pan. The drain hose attached to one end is separated from the drain hose on the normal use position side so that the drain hose exists.

Further, in the invention of claim 4, the second heat exchanger whose lower end portion is slightly installed inside the second drain pan is inclined so that the second heat exchanger is in contact with the rear side wall of the front and rear side walls of the second drain pan. It is installed so that a space is provided between the second heat exchanger and the front side wall of the second drain pan so that the space created between the second heat exchanger and the first heat exchanger is expanded. .

Further, the invention of claim 5 is such that the drain water guide passage is arranged outside the air passage.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional side view showing the internal structure of the indoor unit. In FIG. 1, reference numeral 1 is a main body of a horizontally long indoor unit 10, and the main body 1 is a front case part 1 made of resin which is divided into two parts in front and rear.
It is composed of a and a rear case portion 1b. Air suction ports 3 and 3 are formed between the front surface and the upper portion of the front case portion 1a, and an air outlet 4 is formed obliquely below the front case portion 1a. Reference numeral 5 denotes a suction port protection guard formed of a number of horizontal slits, which is attached to the air suction port 3. 6
Is a detachable deodorizing filter arranged in the front part of the first heat exchanger described later. Reference numeral 7 denotes a plurality of wind direction plates mounted in the air outlet 4 by a support shaft 8, which is vertically swung by a motor 9 to adjust the blowing direction of discharge air.

Reference numeral 11 denotes a curved air passage formed inside the main body 1 so as to connect the air inlet 3 and the air outlet 4. As a member for forming the curved air passage 11, a curved air passage forming rear plate 12 is formed integrally with the rear case portion 1b of the main body 1. Further, the auxiliary refrigerant pipe 14 and the drain hose 15 can be housed at the time of shipping by utilizing the hollow space at the back of the curved rear plate 12 for forming an air passage. 16
Is a blower fan arranged in the air passage 11, and when it is rotated, it sucks indoor air from the air suction port 3 and generates a circulating air flow blown out from the air outlet port 4. 1
Reference numeral 7 denotes a first heat exchanger arranged at a back position near the air suction port 3, which has a well-known configuration in which a refrigerant pipe 19 meanders and penetrates a large number of heat exchange fins arranged in a row. 1 The heat exchanger 17 is formed in a V shape so as not to cover the front and the upper side of the blower fan 16 so as to face the air suction port 3 formed from the front surface to the upper portion in various directions. Sufficient heat exchange with the air sucked from.

Reference numeral 21 denotes a second heat exchanger, which has a structure in which the first heat exchanger 17 is arranged on the front side of the indoor unit 10.
Since there is a space S above the blower fan 16 at the rear of the first heat exchanger 17, the second heat exchanger 21 is placed here in a face-to-face relationship with the first heat exchanger 17 tilted as if forming a roof. The air that has passed through the first heat exchanger 17 is not diffused and is again heat-exchanged with the second heat exchanger 21 to form a closed space in which the air is smoothly sucked into the air passage 11 and is sucked. The heat is exchanged without waste and the heat exchange performance is improved. However, the second heat exchanger 21 is smaller and has a smaller heat exchange capacity than the first heat exchanger 17.

Reference numeral 22 is a first drain pan for receiving the drain water which is condensed and drops on the first heat exchanger 17,
It is processed and formed into a box-shaped container from sheet metal or resin, and is formed with a depth sufficient to store and store drain water and a depth width of the bottom surface. Then, the lower end of the first heat exchanger 17 is set deeply and is installed so as to extend in the longitudinal direction along the lower portion of the first heat exchanger 17. Further, the first drain pan 22 is provided with a drain hose 15 for draining drain water at a normal use position, for example, at the left end (left side in FIG. 2). Depending on the condition of the installation location of 10, the drain 10 can be replaced with the right side (the right side in FIG. 2) of the first drain pan 22 so that the drainage can be performed from the opposite side.

Reference numeral 23 is a second drain pan provided along the lower longitudinal direction of the second heat exchanger 21 for receiving the drain water that is condensed and drops in the second heat exchanger 21, and is a conventional V-shaped groove. In order to be able to store drain water more sufficiently than the drain pan having the above, it is formed in a container having a groove 24 having an inverted trapezoidal sectional shape to increase the volume. The second drain pan 23 is integrally formed on the back side of the upper portion of the air passage forming rear face plate 12 of the rear case portion 1b. This second
On the bottom surface of the drain pan 23, as shown in FIG. 2, which is a view of the rear case 1b viewed from the back side, in order to allow the received drain water to drop downward, the positions near the left and right ends and the central portion are shown. Drain water drop ports 26 and 2 respectively
6 and 25 are provided, and a total of 3 drain drop openings are provided. If there are only two drain water outlets on both ends, the drain outlet has a small hole area, so it may be blocked by the occurrence of a drain scale and drainage tends to deteriorate, but it is also likely to occur in the center. Provide a drain drop port 25 3
If two drain water outlets are provided, even if some drain water outlets are clogged, the drainage capacity will not decrease so much and it will be safer.

The second drain pan 23 is also installed with the lower end of the second heat exchanger 21 inserted. However, the second heat exchanger 21 and the second side wall of the second drain pan 23, that is, the one side wall of the second drain pan 23, and the front side wall 23B on the side closer to the blower fan 16 are separated from each other so that a gap 20 is formed therebetween. By doing so, the second heat exchanger 21 is separated from the first heat exchanger 17 as compared with the case where the lower end portion of the second heat exchanger 21 is provided in contact with the second drain pan 23. Since the space P formed between the first heat exchanger 17 and the air expands, the flow velocity of the air passing through the first heat exchanger 17 decreases when the air enters the widened space P, and the impact on the second heat exchanger 21 is reduced, which reduces noise. With a reduction effect,
Turbulent flow is suppressed and heat exchange air is blown out smoothly to improve ventilation, and the effect of improving the heat exchange rate can be expected.

Then, the drain water drop port 25 at the center of the second drain pan 23 and the drain water drop ports 26, 26 at both ends are provided.
1 and 3 are provided below the second drain pan 23 and on the back of the air passage forming rear face plate 12 of the rear case portion 1b in order to receive the drain water that has flowed down from the drain water to both ends in the longitudinal direction. As shown in FIG. 2, the bottom wall is integrally protruded upward to form a V-shaped groove 27, and the center is made slightly higher and the apex is used as the apex to lower the left and right with a gentle gradient to drain water. A mountain-shaped drain water guide passage 28 is integrally formed so as to collect at both ends in the longitudinal direction. Further, as shown in FIG. 3, drain water is introduced into the drain water guide passage 28 in order to guide the drain water collected at both ends in the longitudinal direction (horizontal direction) to the first drain pan 22 located in the front. A gutter part 29 is formed integrally on both sides of the drain water guide path 28 so as to extend to the front. Therefore, by disposing the drainage member in which the drain water guide path 28 and the drain water introducing trough portion 29 are integrally formed below the second drain pan 23, the drain water from the second heat exchanger 21 is discharged. A drain water drainage channel is formed in which the water can be introduced into the first drain pan 22.

With the above structure, the air conditioner is operated, the compressor in the outdoor unit is driven, and the blower fan 16 in the indoor unit 1 is rotated, so that the air is sucked into the air intake port 3 The air is sucked from the air, and exchanges heat with the first heat exchanger 17 and the second heat exchanger 21 and blows out from the air outlet 4. With the progress of operation, the moisture contained in the air touches the low temperature first heat exchanger 17 to cause dew condensation,
The dripping drain water collects in the first drain pan 22 and is drained by the drain hose 15. On the other hand, when the drain water condensed on the second heat exchanger 21 is dropped, the second drain pan 2
Received at 3. Then, the drain water received by the second drain pan 23 is the three drain water drop ports 2 at the center and both ends.
After falling from 5, 26, 26, it flows down to the left and right along the sloped drain water guideway 28, and when it reaches both ends, it is guided to the first drain pan 22 by the left and right drain water introducing troughs 29, It is collected together with the drain water from the first heat exchanger 17 in a concentrated manner. The drain water collected in the first drain pan 22 is drained to the outside by the drain hose 15.

As described above, the second drain pan 23 is formed in a shape in which the amount of stored drain water is increased, and the drain water received from the plurality of drain water drop ports provided on the bottom surface of the second drain pan 23 is received and left and right. Drain water guideway 28 with a slope that allows rapid flow to both ends of the water, and further drain water guideway 2
The second heat exchanger installed at the back by providing the drain water drainage device constituted by the drain water introducing troughs 29 on both sides for surely guiding the drain water collected at both ends of 8 to the first drain pan 22. Drain water from 21 can be drained easily and in a short time, and the drainage effect can be improved. In addition, the inside of the drain pan is clogged with dust (drain water scale), etc., resulting in insufficient drainage and mold. It is possible to solve the problem of becoming unsanitary.

The above-mentioned mountain-shaped drain water guiding passage 28 has its apex M at a position on the right side of the central drain water dropping port 25 provided in the second drain pan 23, as shown in FIG. Drain water drop port 2 in the center
Drain water dropped from 5 is flowing to the left. This is because the drain hose 15 is usually attached to the left side for use.
This is because it is advantageous to flow to the left near the drain hose 15 rather than to the right from the drain hose 25 to shorten the treatment path and to quickly perform wastewater treatment.

[0025]

As described above, according to the invention of claim 1,
The drain water from the second heat exchanger provided in the rear corresponding to the first heat exchanger in the indoor unit is also received by the second drain pan at the lower part thereof, and further from the plurality of drain water drop ports on the bottom surface. It is received by the downwardly sloping drain water guideway and flows down so that it quickly gathers at both ends, and the drain water introduction troughs on both sides are arranged to correspond to the first heat exchanger.
Since the water is collected in the drain pan, the drain water can be discharged reliably and easily in a short time. In addition, as in the past, drainage failure due to clogging of dust and the like that occurs when using a drain pan that simply flows from the open ports on both ends and also has a small amount of storage, and mold causes unsanitary air to blow out. The problem goes away.

According to the second aspect of the present invention, by constructing the second drain pan in the shape of an inverted trapezoidal container, it is possible to increase the amount of drain water held and to cope with long-term use with peace of mind. The drain water drop openings are provided at least near the center and near both left and right ends to allow the drain water to drop quickly, and by having multiple drain water drop openings, some drain water drop openings are blocked. Also, by ensuring the drainage, the safety of the drainage is enhanced and the usability is improved.

Further, according to the third aspect of the present invention, the central drain water drop port and the peak of the mountain-shaped drain water guide path are offset from each other, and the drain water dropped from the central drain water drop port is normally at the mounting position. Since it is made to flow to the side close to the drain hose on the side, the drainage path is shortened and drainage is improved.

Further, according to the invention of claim 4, the second
Since the lower end of the heat exchanger was installed so as to have a gap with the second drain pan and the space between the first heat exchanger and the second heat exchanger was expanded, exit the first heat exchanger. It is possible to reduce the impact of the wind hitting the second heat exchanger and reduce the impact, and it becomes an air conditioner that operates quietly and reduces noise, so that it is possible to sleep comfortably and expect improvement in comfort.

Further, according to the invention of claim 5, the drain water from the second heat exchanger is reliably discharged to the outside by the drain water guide passage outside the air passage, so that the drain water is discharged inside the air passage. There is no need to worry about the dirt getting inside and polluting the airway.

[Brief description of the drawings]

FIG. 1 is a schematic center vertical cross-sectional view showing the internal structure of an indoor unit in an air conditioner of the present invention.

FIG. 2 is a rear view of the indoor unit viewed from the direction of arrow B in FIG.

FIG. 3 is a sectional view taken along line CC of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Main body 3 Air inlet 4 Air outlet 11 Air passage 12 Air passage forming rear plate 15 Drain hose 16 Blower fan 17 First heat exchanger 21 Second heat exchanger 22 First drain pan 23 Second drain pan 25 , 26, 26 Drain water drop port 28 Drain water guideway 29 Drain water introduction trough

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuyoshi Uchiyama 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (5)

[Claims] 1. Heat exchange between indoor air and a heat exchanger arranged at a rear position of the air suction port by a blower fan provided in an air passage formed inside a main body connecting the air suction port and the air discharge port. In the air conditioner, the heat exchanger is divided into a first heat exchanger and a second heat exchanger so as to sandwich the blower fan. A first drain pan provided along the lower longitudinal direction of the first heat exchanger for receiving drain water dripping from the first heat exchanger; and a first drain pan provided along the lower longitudinal direction of the second heat exchanger, It is higher than the first drain pan, and a second drain pan for receiving drain water dripping from the second heat exchanger, a plurality of drain water outlets provided on the bottom surface of the second drain pan for dropping the drain water in the drain pan downward. Arranged in position And a drain water guide path that collects drain water that falls from the drain pan facing the drain water drop opening of the second drain pan and that collects the drain water at both ends in the longitudinal direction, and the length of the drain water guide path. An air conditioner, comprising: a drain water introduction trough that guides drain water collected at both ends in the direction to the first drain pan. 2. Heat exchange between indoor air and a heat exchanger arranged behind the air suction port by means of a blower fan provided in an air passage formed inside the main body connecting the air suction port and the air discharge port. In the air conditioner, the heat exchanger is divided into a first heat exchanger and a second heat exchanger so as to sandwich the blower fan. A first drain pan provided along the lower longitudinal direction of the first heat exchanger for receiving drain water dripping from the first heat exchanger; and a first drain pan provided along the lower longitudinal direction of the second heat exchanger, A second drain pan composed of an inverted trapezoidal container for receiving drain water dripping from the second heat exchanger;
A plurality of drain water outlets provided near at least both ends and the center of the bottom surface of the drain pan for dropping the drain water in the drain pan downward, and the drain water of the second drain pan arranged at a position higher than the first drain pan. Contain drain water that falls from this drain pan facing the drop port, has a mountain-shaped configuration in which the center part is slightly raised and the slope extends downward from both ends to the end parts. An air conditioner comprising: a drain water guide passage for collecting water; and a drain water introducing trough portion for guiding drain water collected at both longitudinal end portions of the drain water guide passage to a first drain pan. 3. The apex of the mountain-shaped drain water guide passage is usually attached to one end of the first drain pan with respect to a drain water drop port provided near the center of the bottom surface of the second drain pan. The air conditioner according to claim 1 or 2, wherein the air conditioner is located away from the drain hose on the use position side and is located away from the drain hose. 4. The second heat exchanger, whose lower end is slightly installed in the second drain pan, is installed so as to be in contact with a rear side wall of the front and rear side walls of the second drain pan. The above-mentioned claim 1 and claim characterized in that a space is provided between the second heat exchanger and the first heat exchanger by providing a gap between the container and the front side wall of the second drain pan. Item 2. The air conditioner according to Item 2. 5. The air conditioner according to claim 1 or 2, wherein the drain water guide passage is arranged outside the air passage.