JP2001082757A - Draining unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a draining unit capable of effectively externally draining water stored in a body even when a drain hose is blocked by freezing or the like and easily eliminating sticking of a float valve. SOLUTION: A draining cylinder 2 having an inner cylindrical part 9 formed in a valve seat 3 opened at its upper end with a bottom of a body and an outer cylindrical part 10 surrounding the part 9 is projected from a lower end of the body 1 having an inlet cylinder 5 connected to a lower end of vertical piping 17 connected to a humidifier and an outlet cylinder 1 connected to oblique piping 18 connected to an indoor unit. A slit 12 for exposing a part of an upper end of a drain hose externally engaged with the part 10 is axially provided on the part 10. A float valve 4 having a float body 13 and a rod 14 projected from a lower end of the body 13 and formed in a semispherical part 14a for opening/closing the seat 3 at a base part is contained in the body 1, and a lower end 14 of the rod is projected down from a lower end of the part 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, water which is provided at the lower end of a drain pan of an outdoor unit of an air conditioner or at the bent portion at the lower end of a pipe for supplying humidified air to the indoor unit, and which discharges excessively accumulated water to the outside. For the punching unit.

[0002]

2. Description of the Related Art Conventionally, as this type of water draining unit,
For example, there is known one installed at the bottom of a pipe for supplying humidified air from a humidifier to an indoor unit. In this drain unit, the vertical end of the pipe connected to the humidifier is connected to the inlet pipe at the upper end, the inclined end of the pipe connected to the indoor unit is connected to the outlet pipe at the upper part, and the drain pipe projects at the bottom. The main body is provided, and a float valve is provided in the main body so as to open and close a valve seat between the bottom of the main body and the drainage cylinder by elevating and lowering, and a drainage hose is connected to the drainage cylinder. And
When the moisture contained in the humidified air accumulates at a predetermined height at the bottom of the main body, the float valve lifts from the valve seat and discharges the accumulated water to the outside via a drain hose.

[0003]

However, since the conventional drain unit has a structure in which a drain hose is fitted in a water-tight manner on a drain tube provided outside the room, the water in the drain hose is drained during a severe winter season. If the drainage hose freezes, the drainage hose may be blocked, and the water that has accumulated in the main body cannot be discharged. . In addition, scales and molds may adhere to the valve seat portion in the main body during a long-term use, and may be dried in summer when a humidifier is not used, thereby fixing the float valve to the valve seat. In this case, since the float valve does not have a structure that can be directly accessed from the outside, there is a problem that the detachment of the float valve cannot be easily eliminated by pressing the finger with a finger after removing the drainage hose.

Accordingly, an object of the present invention is to improve the connection between the drainage tube and the drainage hose and the structure of the float valve, so that even if the drainage hose is blocked due to freezing or the like, water accumulated in the main body can be surely removed. It is an object of the present invention to provide a drainage unit that can be discharged to the outside or that can easily remove the float valve from sticking.

[0005]

In order to achieve the above object, the invention according to claim 1 is directed to a main body and a water protruding from the bottom of the main body so as to communicate with the inside of the main body, to which a drain hose is fitted. Drain cylinder, a drain unit provided with a float valve provided in the main body to open and close the valve seat between the bottom of the main body and the drain cylinder by lifting and lowering, the axial direction of the drain cylinder A slit is provided.

In the drain unit of the first aspect, when the level of the water accumulated in the main body reaches a predetermined height, the float valve lifts from the valve seat and the water is discharged to the drain hose, and the drain hose freezes. The water level in the drainage hose rises when the drainage hose is closed, but if the slit in the drainage tube is exposed at least partially from the upper end of the drainage hose, the water that has passed over the upper end of the drainage hose will surely It is discharged outside through the slit. Therefore, the water does not fill the main body, and for example, the filled water overflows from an outlet provided on the upper side of the main body, or supply of humidified air or the like passing through the outlet from the inlet at the upper end of the main body. Is not disturbed.

According to a second aspect of the present invention, in the water draining unit, the drainage cylinder includes an inner cylindrical portion and an outer cylindrical portion forming a cylindrical space whose lower end is open, and the slit is provided in the outer cylindrical portion. It is characterized by.

In the water draining unit of the present invention, the upper end of the inner cylindrical portion forms a valve seat connected to the bottom of the main body, while the outer cylindrical portion surrounding the inner cylindrical portion is provided with a slit. The accumulated water is discharged to the outside through the slit only when the drainage hose is closed, and in normal times when the drainage hose is not blocked, it is always discharged to the drainage hose through the inner cylinder. Drainage leakage is reliably prevented.

According to a third aspect of the present invention, there is provided a water drainage tube, which is provided at a bottom of the main body so as to communicate with the inside of the main body, and into which a drainage hose is fitted. In a water draining unit provided with a float valve provided in the main body so as to open and close a valve seat portion by lifting and lowering, the float valve includes a float main body housed in the main body, and a lower end of the float main body. And a rod extending into the drainage cylinder, the lower end of which protrudes downward from the lower end of the drainage cylinder.

According to the third aspect of the present invention, the lower end of the rod protruding from the lower end of the float body of the float valve is provided.
Since the float valve protrudes downward from the lower end of the drain tube, even if the float valve sticks to the valve seat due to scale, mold, dust, etc., remove the drain hose and push up the lower end of the rod with your finger to easily fix it. Thus, the drain unit can function well over a long period of time.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is a longitudinal sectional view showing an example of a drainage unit according to the present invention. This drainage unit is provided with a main body 1 and a bottom portion of the main body 1 so as to protrude so as to communicate with the inside of the main body. (See FIG. 2) A drain valve 2 fitted in the main body 1 and a float valve 4 provided in the main body 1 so as to open and close the valve seat 3 between the bottom of the main body and the drain cylinder 2 by lifting and lowering. Have. The main body 1 is connected to a lid 6 having an inlet tube 5 to which a lower end of a vertical pipe 17 connected to a humidifier (not shown) is connected, and an end of an inclined pipe 18 connected to an indoor unit of an air conditioner (not shown). The main body 8 has an outlet tube 7 at the upper part and the drain tube 2 at the lower end. The lid 6 and the main body 8 are made of, for example, AAS (a copolymer of acrylonitrile rubber and acrylonitrile styrene).

The drainage cylinder 2 has a small-diameter inner cylinder 9 forming the valve seat 3 having an open upper end, and a large-diameter outer cylinder having the same length as the inner cylinder 9 and having a closed upper end. Consisting of part 10
Four stoppers 11 are provided radially on the outer periphery of the base of the outer cylinder 10 to abut against the upper end of the drainage hose 19 and prevent the drainage hose 19 from rising. Then, as shown in FIG.
An axial slit 12 that is partially exposed from the upper end of the drainage hose 19 in contact with the outer cylinder 10 is provided to the lower end. The float valve 4 includes a float main body 13 made of solid cylindrical foamed polyethylene and housed in the main body 1,
It is made of POM (polyoxymethylene) and protrudes from the center of the lower end of the float main body 13, the base forms a hemispherical portion 14 a that contacts the valve seat 3, and the lower end 14 b protrudes downward from the lower end of the inner cylinder 9. And a rod 14.

Since the humidifier is provided in the outdoor unit, the humidifier is usually attached to the bottom of the outer wall of the outdoor unit by screws 16 via the bracket 15 of the lid 6, so that the air conditioner When a humidifier is used during the heating operation, in cold weather, moisture in the humidified air sent to the indoor unit condenses and accumulates at the bottom in the main body 1. When the level of the accumulated water substantially reaches the lower edge of the outlet tube 7, the float body 13 rises by buoyancy, the hemispherical portion 14a is lifted from the valve seat portion 3, and the float valve 4 is opened and accumulated. The drained water passes through the inner cylinder portion 9 and is discharged to the outside via a drain hose 19.

The drain unit having the above structure operates as follows. When the drainage hose 19 is not closed, as described above, when the water level of the water accumulated in the main body 1 substantially reaches the lower end edge of the outlet tube 7, the float valve 4 lifts from the valve seat portion 3, and Water is discharged to the outside via the drain cylinder 2 and the drain hose 19. On the other hand, if the drainage hose 19 is blocked by mud or water frozen in the drainage hose 19 in a severe winter,
The water discharged by the lift of the float valve 4 accumulates in the drain hose 19. However, since the outer cylindrical portion 10 of the drainage cylinder 2 is provided with the axial slit 12 whose upper part is exposed as shown in FIG. Water exceeding the upper end of the drain hose 19 is reliably discharged to the outside through the slit 12. Therefore, unlike the conventional example in which the drainage hose is fitted to the drainage cylinder in a liquid-tight manner, the water that cannot be drained is the main body 1.
It does not fill the inside and overflow from the outlet cylinder 7 to the indoor unit side, and the supply of the humidified air from the vertical pipe 17 to the inclined pipe 18 through the inside of the main body 1 is prevented.

In the above embodiment, since the slit 12 is provided in the outer cylinder portion 10 surrounding the inner cylinder portion 9, the water accumulated in the main body 1 always drains when the drainage hose 19 is not closed. Since the water is discharged through the drainage hose 19 through the inner cylinder portion 9, there is an advantage that the water does not leak out of the slit 12. Only when the drainage hose 19 is closed and abnormal, the water accumulated in the drainage hose 19 is slit. It is discharged to the outside from 12. Also, the inner diameter of the inner cylindrical portion 9 is
Is slightly larger than the outer diameter of the float valve 4, so that the inner cylinder portion 9 serves as a guide for the float valve 4 to move up and down, and there is an advantage that the up and down movement of the float valve 4 is smooth and stable. Further, since the stopper 11 is provided on the outer periphery of the base of the outer cylinder 10 so as to be in contact with the upper end of the drain hose 19, the drain hose 19 can be securely positioned at a predetermined position of the outer cylinder 10 and fitted to the outside. There is an advantage that the exposed portion of the slit 12 can be always secured.

On the other hand, the float valve 4 is
Since the lower end 14b of the rod 14 protruding from the lower end of the rod protrudes downward from the lower end of the inner cylindrical portion 9, water, mold, dust and the like accumulated in the main body 1 when the humidifier is used can be removed when the humidifier is not used in summer or the like. Even if the hemispherical portion 14a is fixed to the valve seat portion 3 by drying, the fixation can be easily eliminated only by removing the drain hose 19 and pushing up the lower end 14b of the rod with a finger.
The drain unit can function well over a long period of time.

In the above embodiment, the water draining cylinder 2 has a double structure of the inner cylinder part 9 and the outer cylinder part 10. However, only the outer cylinder part having the slit 12 is provided, and the valve seat at the upper end of the outer cylinder part is formed. A structure that can be opened and closed by a large-diameter hemispherical portion can also be used. If the sticking is eliminated by inserting a rod or the like from below the inner cylinder part 9,
The rod 14 other than the hemispherical portion 14a of the float valve 4 can be omitted. The drain unit of the present invention is not limited to the humidifier of the above embodiment, but can be applied to, for example, a drain port of an outdoor unit having a condenser with a water spray nozzle.

[0018]

As is apparent from the above description, claim 1
In the drain unit of (2), a drain pipe provided at the bottom of the main body is provided with an axial slit, so that at least a part of this slit is exposed from the upper end of the drain hose, the drain hose freezes, etc. Even if the drainage accumulates inside due to blockage, the accumulated water is discharged to the outside from the exposed portion of the slit. Fill water will not leak to related equipment.

According to a second aspect of the present invention, in the water draining unit, the water draining cylinder comprises an inner cylindrical part and an outer cylindrical part forming a cylindrical space whose lower end is open, and the slit is provided in the outer cylindrical part. Since the water accumulated in the main body is always discharged to the drainage hose through the inner cylinder unless the drainage hose is blocked, it is possible to reliably prevent the drainage from leaking out of the slit in the normal state.

According to a third aspect of the present invention, in the drain unit, the float valve includes a float body accommodated in the main body, and a rod protruding from a lower end of the float body and extending into the drain cylinder. Since the lower end of this rod protrudes downward from the lower end of the drain tube, even if the float valve is fixed to the valve seat due to scale, mold, dust, etc., remove the drain hose and finger the lower end of the rod. , The sticking can be easily eliminated, and the drainage unit can function well for a long period of time.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an example of a drain unit of the present invention.

Fig. 2 Fig. 1 with drain hose connected to the drain tube at the lower end
It is a front view of the drainage unit of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Drain cylinder 3 Valve seat 4 Float valve 5 Inlet cylinder 6 Lid 7 Outlet cylinder 8 Main part of main body 9 Inner cylinder part 10 Outer cylinder part 11 Stopper 12 Slit 13 Float body 14 Rod 14a Semispherical part 14b Lower end 17 Vertical piping 18 Inclined piping 19 Drain hose

Claims (3)

[Claims] 1. A water draining cylinder (2), which is protruded from the bottom of the body (1) so as to communicate with the inside of the body, and into which a drain hose (19) is fitted. The above-mentioned main body is opened and closed by opening and closing the valve seat (3) between the bottom and the drainage cylinder (2).
(1) A drain unit provided with a float valve (4) provided therein, wherein the drain cylinder (2) is provided with an axial slit (12). 2. The drain unit according to claim 1, wherein the drain tube (2) comprises an inner cylindrical portion (9) and an outer cylindrical portion (10) forming a cylindrical space having an open lower end. Wherein the slit (12) is provided in the outer cylinder (10). 3. A body (1), a drain tube (2) projecting from the bottom of the body (1) so as to communicate with the inside of the body, and fitted with a drain hose (19); The above-mentioned main body is opened and closed by opening and closing the valve seat (3) between the bottom and the drainage cylinder (2).
In a drain unit provided with a float valve (4) provided in (1), the float valve (4) includes a float body (13) housed in the body (1) and a float body (13). A rod (14) projecting from the lower end of (13) and extending into the drainage cylinder (2).
And a lower end (14b) of the rod (14) protrudes downward from a lower end of the drain tube (2).