JP3898154B2 - Drain treatment device for air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drain treatment apparatus for preventing the drain water from flowing back in the drain hose for draining the drain generated by the air conditioner to the outside due to, for example, wind pressure and the like and generating abnormal noise.
[0002]
[Prior art]
Usually, a drain hose for draining the drain generated by the air conditioner to the outside is attached to the air conditioner. When this drain hose is attached horizontally, drain water tends to accumulate in the drain hose. In this state, if you operate a ventilation fan in the room where the air conditioner is installed, or if a strong wind blows in a high-rise apartment, etc., the drain water that has flowed into the drain hose will be blown off, and the drainage water will rebound. Sound may be generated. In some cases, drain water flows backward and flows into the air conditioner, causing water leakage. Also, if the drain hose tip is near the sewer, a bad odor may enter the room.
[0003]
In order to solve these problems, a backflow prevention device for preventing the backflow of drain water is attached to the end of the drain hose. The backflow prevention device has a main body in which an attachment port for a drain hose is formed at the upper end, a neck portion (valve seat) is formed in the interior and an opening is formed in the lower portion, a lightweight floating ball provided inside the main body, And a stopper for supporting the ball.
[0004]
When wind pressure exceeding its weight is applied, the floating ball floats up and closes to the neck from below to close the neck, and when the wind pressure drops below a certain level, the weight or drain gravity acts to cause the neck to fall downward. Open. The floating ball that has dropped downward is supported by a stopper (see, for example, Patent Document 1).
[0005]
[Patent Document 1]
Microfilm of Japanese Utility Model Application No. 5-17627 (Japanese Utility Model Application Publication No. 6-78717)
[Problems to be solved by the invention]
Conventional air conditioner drain backflow prevention devices are configured as described above, so that the floating ball is always in contact with the neck or stopper, so it adheres with scales and closes the neck due to wind pressure, or floats. The neck may not be released due to the weight of the ball or the gravity of the drain.
[0007]
Further, when the floating ball is operated, there is a possibility that a sound is generated when it comes into contact with the neck or the stopper.
[0008]
Furthermore, the number of parts is expensive because it is composed of three parts including a main body, a floating ball, and a stopper.
[0009]
The present invention has been made to solve the above-described problems. The backflow prevention device operates reliably in any use environment, and no noise is generated when the backflow prevention device operates. An object of the present invention is to provide an inexpensive air conditioner drain treatment apparatus.
[0010]
[Means for Solving the Problems]
A drain treatment apparatus for an air conditioner according to the present invention includes a drain hose connected to the air conditioner, a valve hose provided at the tip of the drain hose, convex on the outdoor side and tapered on the outdoor side. has, conical forming the cross-shaped space slit to the valve portion, hardness anda backflow prevention device having a check valve constructed in 60 soft rubber 40, the space of the check valve The width of the slit is 0.5 mm or more so that the valve portion does not adhere due to water scale.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
1 to 6 are diagrams showing Embodiment 1, FIG. 1 is a view showing an air conditioner provided with a drain treatment device, FIG. 2 is a cross-sectional view showing the drain treatment device, and FIG. 3 is a reverse view of the drain treatment device. 4 is a cross-sectional view showing the drain treatment device when the check valve is closed, FIG. 5 is a cross-sectional view showing the drain treatment device when the check valve is open, and FIG. 6 is a space slit of the drain treatment device. It is a figure which shows the relationship between the size of this and the ratio of a space slit (transmission area B / transmission area C), and a loudness.
[0012]
As shown in FIG. 1, a drain hose 2 for draining drain water generated inside the air conditioner 1 to the outside is attached to the air conditioner 1. A backflow prevention device 3 for preventing backflow to the air conditioner 1 is attached.
[0013]
The configuration of the drain treatment device and the backflow prevention device 3 will be described with reference to FIGS. The drain treatment device has a drain hose 2 and a backflow prevention device 3. The backflow prevention device 3 houses a check valve 12 inside the main body 10. The main body 10 is provided with a connection port 11 for extendingly connecting the drain hose 2 at the lower portion, and has a stepped portion 17 at the upper portion.
[0014]
The check valve 12 provided inside the main body 10 is formed of a soft rubber having a hardness of 40 to 60, and a valve portion 13 formed in a conical shape at the lower portion is provided. As shown in FIG. The space slit 14 is opened in a cross shape. The cross-shaped space slit 14 opens and allows the fluid to pass only when the pressure inside the valve portion 13 becomes larger than the pressure outside.
However, the valve portion 13 is not limited to a conical shape, and may be any shape that is convex on the outdoor side and tapered on the outdoor side. The space slit 14 is not limited to a cross shape.
[0015]
The dimension A indicating the width of the space slit 14 is 0.5 to 1 mm, and the transmission area B by the space slit 14 is not less than 5% and not more than 20% of the transmission area C in the cylindrical portion 15 of the check valve 12. And
[0016]
A mounting port 16 for the drain hose 2 is formed in the upper portion of the check valve 12, and this mounting port 16 is fitted and fixed to the stepped portion 17 of the main body 10.
[0017]
Next, the operation will be described.
When the air conditioner 1 and the indoor ventilation fan in which the air conditioner 1 is installed are operated, air tends to flow from the outside to the room through the drain hose 2, but as shown in FIG. Since the shape of is a convex cone on the outdoor side, the valve portion 13 of the check valve 12 is closed by the wind pressure, and air does not flow into the room, so even if the drain water is accumulated in the drain hose 2, Plays and does not generate abnormal sounds like drumsticks and drums.
[0018]
At this time, since the valve portion 13 is formed of a soft rubber having a hardness of 40 to 60, no sound is generated due to opening and closing.
[0019]
Even if strong winds blow in high-rise condominiums, etc., the valve portion 13 of the check valve 12 is closed by the wind pressure, and air does not flow into the room. Therefore, even if drain water is accumulated in the drain hose 2, the drain water will be repelled. No unusual noises like Poko Poko and Taiko are generated.
[0020]
Further, even when the tip of the drain treatment device is near the sewer, air from the outside does not flow into the room, so that a strange odor does not enter the room.
[0021]
Further, as shown in FIG. 5, the drain water generated from the air conditioner 1 is drained outdoors as usual because the valve portion 13 is opened by its own weight.
[0022]
When the air conditioner 1 has been used for many years, the valve portion 13 may be fixed due to scales or the like generated by drain water, but the valve portion 13 is provided with a space slit 14 and may be fixed. There is no.
[0023]
If the dimension A of the space slit 14 is too large, air will flow into the room from the outside, so it cannot be made too large. On the contrary, if the dimension A is reduced, the valve portion 13 is fixed due to water scale, so a dimension that satisfies both is required. The dimension satisfying both is 0.5 to 1.0 mm.
[0024]
FIG. 6 is a graph in which the horizontal dimension represents the A dimension of the spatial slit 14 and the ratio of transmission area B / transmission area C, and the sound volume is represented on the vertical axis. As shown in the figure, when the dimension A of the space slit 14 increases, the volume of sound increases. Since the sound cannot be heard by human ears up to a certain level, it should be below the audible sound level line of the graph. Since the dimension of the space slit 14 that does not adhere to the A-size scale is 0.5 mm or more, the optimum dimension is 0.5 to 1 mm. In terms of the ratio of transmission area B / transmission area C, it is 5% or more and 20% or less.
[0025]
According to the above-described embodiment, the drain hose 2 is equipped with the check valve 12 made of soft rubber having a hardness of 40 to 60, and the check valve 12 has a conical valve portion that protrudes outward on the lower side. 13, and by opening the cross-shaped space slit 14 in the valve portion 13, even if air flows from the outside into the room, the conical valve portion 13 is closed by the wind pressure and the air does not flow into the room. For this reason, even if water is accumulated in the drain hose 2, the drain water can be repelled and no abnormal noise such as a pop and a drum is generated.
Further, since the valve portion 13 is made of soft rubber having a hardness of 40 to 60, the sound due to opening and closing is small.
[0026]
Further, according to the above-described embodiment, since the width of the space slit 14 of the check valve 12 is 0.5 or more and 1 mm or less, the valve portion 13 is not fixed due to water scale or the like, and air flows from the outside to the room. Since it does not flow, no abnormal noise is generated from the drain water accumulated in the drain hose 2.
[0027]
Moreover, according to the above-mentioned embodiment, since the permeation area B by the space slit 14 is set to 5% or more and 20% or less of the permeation area C in the cylindrical portion 15 of the check valve 12, the valve portion 13 is caused by dirt or the like. Since the air does not flow from the outside to the room without being fixed, no abnormal noise is generated from the drain water accumulated in the drain hose 2.
[0028]
【The invention's effect】
A drain treatment apparatus for an air conditioner according to the present invention includes a drain hose connected to the air conditioner, a valve hose provided at the tip of the drain hose, convex on the outdoor side and tapered on the outdoor side. And a backflow prevention device equipped with a check valve having a space slit formed in the valve portion, the backflow prevention device operates reliably in any use environment, and low-cost air conditioning Machine drain treatment device is obtained.
[Brief description of the drawings]
FIG. 1 shows the first embodiment and is a diagram showing an air conditioner provided with a drain treatment device.
FIG. 2 shows the first embodiment, and is a cross-sectional view showing a drain processing apparatus.
FIG. 3 shows the first embodiment, and is a cross-sectional view showing a check valve of the drain treatment device.
FIG. 4 shows the first embodiment, and is a cross-sectional view showing the drain processing device when the check valve is closed.
FIG. 5 shows the first embodiment and is a cross-sectional view showing when the check valve is open in the drain processing device.
FIG. 6 is a diagram illustrating the first embodiment, and is a diagram illustrating a relationship between the size of the spatial slit of the drain processing apparatus, the ratio of the spatial slit (transmission area B / transmission area C), and sound volume.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Air conditioner, 2 Drain hose, 3 Backflow prevention apparatus, 10 Main body, 11 Connection port, 12 Check valve, 13 Valve part, 14 Spatial slit, 15 Cylindrical part, 16 attachment port, 17 Stepped part.

Claims (4)

A drain hose connected to the air conditioner;
A conical shape provided at the tip of this drain hose, having a convex valve portion on the outdoor side and a tapered shape on the outdoor side, with a cross-shaped space slit formed in the valve portion, having a hardness of 40 to 60 A backflow prevention device having a check valve made of soft rubber ,
A drain treatment apparatus for an air conditioner, wherein a width of a space slit of the check valve is 0.5 mm or more so that the valve portion is not fixed due to water scale. The drain treatment apparatus for an air conditioner according to claim 1, wherein the width of the space slit of the check valve is 1 mm or less so as to suppress the inflow of air from the outside to the room. A drain hose connected to the air conditioner;
A conical shape provided at the tip of this drain hose, having a convex valve portion on the outdoor side and a tapered shape on the outdoor side, with a cross-shaped space slit formed in the valve portion, having a hardness of 40 to 60 A backflow prevention device having a check valve made of soft rubber ,
The permeation area of the check valve's space slit is at least 5% of the permeation area of the cylindrical part of the check valve so that the valve part does not stick due to water scale, and the volume of the sound is an audible sound level. A drain treatment apparatus for an air conditioner characterized by being 20% or less so as to be below.   The drain treatment apparatus for an air conditioner according to any one of claims 1 to 3, wherein the space slit is provided up to the bottom of the conical shape.

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