JP4431250B2 - Drain drainage device for air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drain drainage device for an air conditioner in which a drain pan that receives drain water generated by an evaporator is disposed at a position below the evaporator.
[0002]
[Prior art]
Conventionally, in an air conditioner provided with a refrigeration cycle and a blower comprising an evaporator, a condenser and a compressor, drain water generated by condensation of water contained in cooling air passing through the evaporator Is received by a drain pan disposed below the evaporator, and drain water accumulated in the drain pan is drained out of the air conditioner via a drain pipe connected to a drain drain port.
[0003]
By the way, in the conventional air conditioner, even when the inside of the air conditioner becomes a negative pressure, a trap is provided below the drain outlet so that the drain water can be discharged without delay.
[0004]
[Problems to be solved by the invention]
By the way, when the trap is provided, there is a problem that the height of the air conditioner becomes high, and in particular, in an air conditioner having a structure in which drain water is directly introduced from the drain outlet to the drain tank without connecting the drain pipe. Because of the space, no trap could be provided.
For this reason, when the degree of negative pressure inside the air conditioner increases due to clogging of the air filter or fins, the flow of drain water flowing down from the drain outlet is blocked by the air flow sucked from the drain outlet. There was a problem that the water level rose and the drain water overflowed from the drain pan.
[0005]
In view of the problem of the drainage device of the conventional air conditioner, the present invention is capable of allowing drain water to flow from the drain outlet of the drain pan without being affected by the negative pressure inside the air conditioner. An object of the present invention is to provide a drainage drainage device for an air conditioner.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a drain drainage device for an air conditioner according to the present invention is the drain drainage device for an air conditioner in which a drain pan that receives drain water generated by the evaporator is disposed at a lower position of the evaporator. A partition plate is disposed in the drain drain port, and one space of the drain drain port is contracted downward, and the other space is expanded downward.
[0007]
In the drain drainage device of this air conditioner, a partition plate is disposed at the drain drain port of the drain pan so that one space of the drain drain port shrinks downward and the other space expands downward. For example, even if the negative pressure inside the air conditioner increases due to clogging of the air filter or fins, the lower end of the drain outlet is cut off in the space that shrinks downward. Since the area is small, the amount of air sucked in is small, so the flow rate of the air flowing upward in the space shrinking downward is reduced, the flow of drain water flowing down from the drain outlet is not obstructed, and the drain Water can be drained smoothly.
[0008]
In this case, the partition plate is connected to the engagement piece locked to the upper end edge of the drain discharge port, the inclined surface piece connected to the engagement piece, and connected to the inclined surface piece, and the engagement piece is connected to the drain discharge port. It can comprise a lower piece that hangs down in a substantially vertical direction when locked to the upper edge.
[0009]
As a result, the partition plate can be attached to the drain drainage port only by locking the engaging piece to the upper edge of the drain drainage port. Therefore, the partition plate can be easily attached and detached, and dirt or the like is clogged. Easy drain drainage cleaning.
Moreover, since the lower piece suspended in a substantially vertical direction acts as a kind of weight, the partition plate can be stably attached to the drain outlet.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the drainage device for an air conditioner according to the present invention will be described below with reference to the drawings.
[0011]
1 to 4 show an embodiment of an air conditioner to which the drainage device for an air conditioner of the present invention is applied.
In this air conditioner, the drain tank 2 and the compressor 3 are detachably installed in the lower part, and the evaporator 4 and the condenser are placed above the drain tank 2 at a position where it can directly contact with the outside air to be sucked. The units 5 are arranged and arranged one above the other, and further, an evaporator blower 10 and a condenser blower 11 are provided.
[0012]
A drain pan 6 is arranged on the drain tank 2 below the condenser 5, receives drain water generated in the evaporator 4 that has fallen without being evaporated through the fins of the condenser 5, and passes through a drain outlet 61. It introduce | transduces into the lower drain tank 2. FIG.
[0013]
The evaporator 4 and the condenser 5 are independently attached to the main body frame 1, and air (outside air) is sucked into the main body frame 1 through the evaporator 4 and the condenser 5 by the evaporator blower 10 and the condenser blower 11. To be configured.
[0014]
The evaporator blower 10 and the condenser blower 11 are covered with casings 10K and 11K, respectively.
The air that has been heat-exchanged and cooled in the evaporator 4 is used for cooling from the casing 10K in which the evaporator blower 10 is disposed, through the discharge port 8a and the air duct (not shown).
On the other hand, the heat exchanged and heated by the condenser 5 is discharged to the outside from the casing 11K in which the condenser blower 11 is disposed, through the discharge port 8b and the blower duct (not shown).
Thus, the air cooled by the evaporator 4 (cold air) and the air heated by the condenser 5 (hot air) are separated and discharged individually.
[0015]
The drain pan 6 has a size and shape suitable for receiving drain water that has fallen along the fins of the condenser 5, for example, a rectangular shape as shown in FIG. 3, and surrounds the periphery thereof. In this way, the peripheral wall 62 is integrated into a shallow basin shape, and a drain outlet 61 is formed in a part of the bottom surface 63 thereof.
[0016]
In this case, the drain drain port 61 is provided with a partition plate 7 that divides the space in the drain drain port 61 into two, and one space 61A of the partitioned drain drain port 61 is reduced downward. Thus, the other space 61B is configured to expand downward.
In addition, the space in the drain outlet 61 can be divided into three or more. In this case, a space that shrinks downward and a space that expands downward are formed.
[0017]
The partition plate 7 may be a fixed type. However, as in the present embodiment, the engaging piece 71 that is locked to the upper edge of the drain drain port 61 and the engaging piece 71 are inclined as in the present embodiment. The inclined surface piece 72 connected to the inclined surface piece 72, and the lower piece 73 that is connected to the inclined surface piece 72 and hangs down in the substantially vertical direction when the engaging piece 71 is locked to the upper end edge of the drain drain port 61. For example, it is desirable to use a synthetic resin member having a required thickness.
[0018]
In this case, the engaging piece 71 of the partition plate 7 is formed longer than the inner diameter of the drain drain port 61 so that it can be stably locked to the upper end edge of the drain drain port 61, while the inclined surface piece 72 and the lower piece 73. Is formed to have a width slightly narrower than the inner diameter of the drain outlet 61 so that the drain outlet 61 can be fitted.
Then, the length of the partition plate 7 is determined so that the lower piece 73 of the partition plate 7 protrudes from the lower end edge of the drain drain port 61.
[0019]
As a result, the partition plate 7 can be attached to the drain drain port 61 only by locking the engaging piece 71 of the partition plate 7 to the upper edge of the drain drain port 61. Cleaning of the drain outlet 61 that can be easily performed and is likely to be clogged with dust or the like can be easily performed by removing the partition plate 7 from the drain outlet 61.
Further, when the engaging piece 71 of the partition plate 7 is locked to the upper end edge of the drain drain port 61, the lower piece 73 suspended in a substantially vertical direction acts as a kind of weight, and therefore the partition plate 7 is connected to the drain drain port. The partition plate 7 can be stably attached to the drain outlet 61 without swinging in the drain 61.
[0020]
Next, the operation of this air conditioner will be described.
When the air conditioner is installed in a factory or work place and starts to operate, air (outside air) is sucked into the main body frame 1 through the evaporator 4 and the condenser 5.
The sucked air is heat-exchanged in the evaporator 4 and is used for cooling from the casing 10K in which the evaporator blower 10 is disposed through the discharge port 8a and the air duct (not shown).
On the other hand, the heat exchanged and heated by the condenser 5 is discharged to the outside from the casing 11K in which the condenser blower 11 is disposed, through the discharge port 8b and the blower duct (not shown).
[0021]
At this time, the ventilation resistance increases due to the ventilation resistance of the air filter 12, the condenser 5 and the evaporator 4, and in an environment where there is a lot of dust in the intake air, the air filter 12 and the fins are clogged. When the degree of negative pressure inside the air conditioner increases, air is sucked into the air conditioner via the drain outlet 61.
[0022]
By the way, in this air conditioner, the partition plate 7 is disposed in the drain outlet 61 of the drain pan 6, and one space 61A of the drain outlet 61 is reduced downward, and the other space 61B is downward. Since it is configured to expand, even if the degree of negative pressure inside the air conditioner increases, in the space 61A that shrinks downward, the sectional area of the lower end of the drain outlet 61 is small. The amount of air sucked is small, and therefore the flow velocity of the air flow flowing upward in the space 61A that shrinks downward is reduced. In this space 61A, the drain water flowing down from the opening at the upper end of the drain outlet 61 The flow of water is not hindered, and drain water can be drained smoothly.
[0023]
In addition, in the space 61B that expands downward, the lower end of the drain outlet 61 has a large cross-sectional area, so that a large amount of air is sucked in. Therefore, the space 61A that expands downward flows upward. Increased airflow velocity.
Thereby, as shown in the present embodiment, when the partition plate 7 is attached to the drain drain port 61 by locking the engaging piece 71 of the partition plate 7 to the upper end edge of the drain drain port 61, the partition plate 7 is It will be pressed from the space 61B side to the space 61A side by the action of the air flow, and the attached state of the drain outlet 61 of the partition plate 7 can be stabilized.
[0024]
【The invention's effect】
According to the drainage device for an air conditioner of the present invention, the partition plate is disposed at the drainage outlet of the drain pan, and one space of the drainage outlet is reduced downward, and the other space is directed downward. For example, even if the negative pressure inside the air conditioner increases due to clogging of the air filter or fins, in the space that shrinks downward, drain drainage Since the cross-sectional area of the lower end of the mouth is small, the amount of air sucked in is small, so the flow rate of the air flow flowing upward in the space shrinking downward is reduced, and the flow of drain water flowing down from the drain outlet It is possible to smoothly drain the drain water without being inhibited, and to prevent the drain water from rising from the drain pan due to an increase in the drain water level.
[0025]
In addition, the partition plate is engaged with the upper end edge of the drain discharge port, the inclined surface piece connected to the engagement piece, and the inclined surface piece connected to the upper end edge of the drain discharge port. Since the partition plate can be attached to the drain outlet only by locking the engaging piece to the upper edge of the drain outlet by constituting the lower piece that hangs down in a substantially vertical direction. The plate can be easily attached and detached, and the drain outlet that is likely to be clogged with dust etc. can be easily cleaned.
Moreover, since the lower piece suspended in a substantially vertical direction acts as a kind of weight, the partition plate can be stably attached to the drain outlet.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of an air conditioner to which the drainage device for an air conditioner of the present invention is applied.
FIG. 2 is a rear view of the same.
FIG. 3 shows a drain pan, (A) is a plan view, (B) is a front view, and (C) is a side view.
4A and 4B show a drain outlet of a drain pan, where FIG. 4A is a front view and FIG. 4B is a cross-sectional view.
FIG. 5 is an explanatory diagram of a partition plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body frame 10 Evaporator blower 10K Casing 11 Condenser blower 11K Casing 12 Air filter 2 Drain tank 3 Compressor 4 Evaporator 5 Condenser 6 Drain pan 6A, 6B Space 61 Drain drainage port 7 Partition plate 71 Engagement piece 72 Inclined surface piece 73 Lower piece 8a Discharge port 8b Discharge port

Claims (2)

In the drain drainage device of an air conditioner in which a drain pan that receives drain water generated by the evaporator is disposed at a lower position of the evaporator, a partition plate is disposed at the drain drain port of the drain pan, and one of the drain drain ports is provided. A drainage drainage device for an air conditioner, characterized in that the space is reduced downward and the other space is enlarged downward. The partition plate is engaged with the upper end edge of the drain drainage port, the engaging piece that is engaged with the upper end edge of the drain discharge port, the inclined surface piece that is connected to the engaging piece, and the upper end edge of the drain drainage port that is connected to the inclined surface piece The drainage device for an air conditioner according to claim 1, wherein the drainage device comprises a lower piece that hangs down in a substantially vertical direction when stopped.

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