JP2007085690A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate a water leakage from a fitting part by positively fitting a drain cap and a drain port even if the drain port has a large bore, and to prevent a large quantity of condensed water from being drained at a stroke to the lower part of an air conditioner when draining the condensed water collected in a drain pan, from the drain port. <P>SOLUTION: The air conditioner is constituted to mechanically fix the drain port 7 and the drain cap 8a, to provide a drain hole 9 almost at the center and to seal the drain hole 9 with a detachable drain plug 10 to thereby maintain working efficiency during maintenance and to allow reliable sealing. When draining only the condensed water, the condensed water is prevented from being drained downward in large quantities at a stroke because the drain hole 9 has a small diameter. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement in maintainability of a drain cap for drainage provided in a drain pan of an air conditioner and an improvement in reliability against water leakage.

  Conventionally, this type of air conditioner has been installed in the ceiling, and maintenance such as clogging drain drainage, failure of the drain pump, and removal of slime accumulated in the drain pan by long-term use of the air conditioner. At this time, a drain pan having a large diameter is provided in the drain pan for easy operation, and a structure in which a drain cap using an elastic material is easily removable to seal the drain port is generally used ( For example, see Patent Document 1).

FIG. 7 shows a cross-sectional view of a conventional air conditioner described in Patent Document 1. As shown in FIG. FIG. 8 is a detailed view around the drain port of a conventional air conditioner. As shown in FIGS. 7 and 8, the blower 2 is disposed inside the air conditioner body 1. A heat exchanger 3 is disposed on the outer periphery, and a drain pan 4 that receives condensed water generated from the heat exchanger 3 during cooling operation is disposed below the heat exchanger 3. The condensed water accumulated in the drain pan 4 is pumped up by the drain pump 5 and discharged from the air conditioner body 1 to the outside through the drain drain port 6. The drain pan 4 has a drain drain pipe clogged or the condensate that has been forcedly accumulated in the drain pan 4 when the drain pump 5 is broken. A drain port 7 is provided below the drain pump 5 in the drain pan 4 for maintenance such as removing slime generated and accumulated in the drain pan 4 after being used for a long time. In order to seal, a drain cap 8 configured so that pressure is always applied to the inner periphery of the drain port 7 is attached. In general, the drain cap 8 has a large diameter as much as possible for easy maintenance, and is generally molded from an elastic material so that it can be easily attached and detached and hardly cause water leakage. is there.
JP-A-5-118574

  However, in the conventional configuration, the drain port 7 is required to have a large diameter in order to improve maintainability. Therefore, the drain cap 8 that closes the drain port 7 is also required to have a large diameter. However, when the drain cap 8 is enlarged, the variation in the dimensional tolerance range of the drain port 7 and the drain cap 8 is increased, and the fitting adjustment with the drain port 7 is not successful and water leakage is likely to occur. Was. Further, since the diameter of the drain port 7 is increased, when the condensed water accumulated in the drain pan 4 is drained from the drain port 7, a large amount of condensed water is drained below the air conditioner.

  The present invention solves the above-mentioned conventional problem, and even if the drain port becomes a large diameter, the drain cap and the drain port are securely fitted, there is no water leakage from the fitting part, and the drain pan 4 is accumulated. An object of the present invention is to provide an air conditioner in which a large amount of condensed water is not drained below the air conditioner when the condensed water is drained from the drain port 7.

In order to solve the conventional problems, an air conditioner of the present invention is an air conditioner including an air blower, a heat exchanger, a drain pump, and a drain pan inside an indoor unit main body arranged in a ceiling. A drain pan for receiving drain water generated by a heat exchanger, and a drain pump for draining drain water accumulated in the drain pan to the outside, the drain pan for draining drain water separately below the drain pump A drain cap and a drain cap for sealing the drain port, wherein the drain cap is detachably attached to the drain port and can be fixed in a watertight manner, and further, substantially at the center of the drain cap. Is provided with a drain hole. As a result, by providing a drain plug that is detachable from the drain hole and can be fixed in a watertight manner, the drain plug is used only for drainage of condensed water, so that the diameter can be reduced, and therefore the fitting accuracy with the drain port is increased. Can improve quality. Furthermore, it is possible to prevent a large amount of condensate from being drained at a stretch by removing the drain hole having a small diameter of the condensate accumulated in the drain pan. In addition, the drain port has a large diameter that facilitates workability during maintenance, and is mechanically fixed, so that it has excellent water tightness and can be sealed more securely than when elastic materials are used. .

  The air conditioner of the present invention has a drain port provided in a drain pan and a drain cap structure that seals the drain port, facilitating workability at the time of maintenance of the drain pan, excellent water tightness of the drain cap, The workability at the time of discharging the accumulated condensed water can be improved.

  1st invention is the inside of the indoor unit main body arrange | positioned in a ceiling, a blower, a heat exchanger, the drain pan which receives the drain water produced | generated by the said heat exchanger at the time of air_conditionaing | cooling operation, and the drain collected in the said drain pan A drain pump for draining water to the outside, and the drain pan has an air conditioner having a drain port for draining drain water separately below the drain pump and a drain cap for sealing the drain port. In the machine, the drain cap is detachably attached to the drain port and can be fixed in a watertight manner. Further, a drain hole is provided in a substantially central portion of the drain cap, and the drain cap is detachably attached to the drain hole in a watertight manner. This is provided with a drain plug that can be fixed, so that the drain plug is used only for the drainage of condensed water, so the fitting diameter can be increased and the quality can be improved. The accumulated condensed water Rusarani drain pan by removing a drain hole which is smaller in diameter, it is possible to prevent the stretch large amount of condensed water is drained downwardly. In addition, the drain port has a large diameter that facilitates workability during maintenance, and is mechanically fixed, so that it has excellent water tightness and can be sealed more securely than when elastic materials are used. .

  The second invention is the air conditioner according to the first invention, in which the drain cap is molded of a resin material, screwed into the drain port and fixed through an O-ring, and the drain cap is connected to the drain port. Since it is further sealed with an O-ring together with the mechanical fixing part between the drain cap and the drain cap, it is possible to prevent water leakage more reliably by the double structure.

  In the air conditioner of the first or second invention, the third invention is provided with a hose connection port for connecting a drain hose to the drain cap, and discharges the condensed water accumulated in the drain pan. Sometimes a commercially available drain hose can be connected, and it can be discharged to any location without leaking down the air conditioner.

  In the air conditioner of the first to third inventions, in particular, the fourth invention is configured such that when the drain plug is attached to the drain cap, the lower end of the drain cap does not protrude from the lower end of the drain cap. As a result, when a decorative panel or the like is attached, the drain plug does not hit the contact surface with the decorative panel, the shape of the decorative panel can be simplified, and the adhesion between the decorative panel and the air conditioner can be improved. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a detailed view of the vicinity of a drain port of an air conditioner according to a first embodiment of the present invention. FIG. 2 is a sectional view around the drain port.

  1 and 2, a heat exchanger 3 is disposed inside the air conditioner main body 1, and a drain pan 4 that receives condensed water generated from the heat exchanger 3 is disposed. The condensed water collected in the drain pan 4 is pumped up by a drain pump 5 and discharged from the air conditioner body 1 to the outside through a drain drain port 6. The drain pan 4 has a drain drain pipe clogged or condensate water that has been forcedly accumulated in the drain pan 4 when the drain pump 5 is broken, or the air conditioner main body 1 A large-diameter drain port 7 that places importance on maintainability is provided below the drain pump 5 in the drain pan 4 for maintenance such as removal of slime generated and accumulated in the drain pan 4 by using for a long time. In order to seal the drain port 7, a drain cap 8 a configured to be mechanically attachable with a screw is attached to the inner periphery of the drain port 7.

  A drain hole 9 having a small diameter is provided at a substantially central portion of the drain cap 8a in order to discharge the condensed water generated by the heat exchanger 3 to the outside of the air conditioner body 1. Further, in order to seal the drain hole 9 during normal use, a drain plug 10 having a smaller diameter is provided which is configured to be detachable and watertight.

  About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. When removing the slime or the like generated and accumulated in the drain pan 4 by using the air conditioner main body 1 for a long period of time, the drain cap 8a is removed from the drain port 7 set to a large diameter so that the maintenance time of the drain pan can be reduced. The workability is facilitated, and the drain cap 8a is mechanically fixed, so that it is excellent in water tightness and can be surely sealed even when an elastic material is used. Moreover, in order to discharge only the condensed water produced | generated with the heat exchanger 3 to the exterior of the air conditioner main body 1, the small diameter drain hole 9 provided in the approximate center part of the drain cap 8a is sufficient, In use, the drain hole 9 is sealed with a drain plug 10 that is detachable and can be fixed in a watertight manner. In addition, since the drain hole 9 has a small diameter, a large amount of condensed water can be prevented from being drained below the air conditioner, and the drain plug 10 that seals the drain hole 9 has a small diameter. The fitting accuracy with 9 is also improved, and water leakage from the fitting portion can be greatly reduced.

(Embodiment 2)
FIG. 3 shows a detailed view around the air conditioner drain port in the second embodiment of the present invention. In FIG. 3, a drain cap 8a is mechanically attached to the inner periphery of a large-diameter drain port 7 provided in the drain pan 4, and a small-diameter drain hole 9 and a drain plug 10 are provided at a substantially central portion of the drain cap 8a. The configuration is the same as in FIG.

  In the second embodiment, the drain cap 8a is further molded from a resin material, and is screwed and fixed to the drain port 7 via a plurality of O-rings 11 on the inner wall surface where the drain port 7 and the drain cap 8a are fitted. Is configured to do.

  In the air conditioner configured as described above, since it is further sealed with an O-ring in addition to the sealing by the mechanical fixing portion between the drain port and the drain cap, it is possible to prevent water leakage due to the double structure. .

(Embodiment 3)
FIG. 4 is a detailed view of the vicinity of the drain port of the air conditioner according to the first embodiment of the present invention. FIG. 5 shows a cross-sectional view around the drain port.

  4 and 5, the heat exchanger 3 is disposed inside the air conditioner body 1, and the drain pan 4 that receives the condensed water generated from the heat exchanger 3 is disposed. The condensed water accumulated in the drain pan 4 is pumped up by the drain pump 5 and discharged from the air conditioner body 1 to the outside through the drain drain port 6. The drain pan 4 has a drain drain pipe clogged or the condensate that has been forcedly accumulated in the drain pan 4 when the drain pump 5 is broken. A drain port 7 having a large diameter with an emphasis on maintainability is provided below the drain pump 5 in the drain pan 4 for maintenance such as removal of slime generated and accumulated in the drain pan 4 after long-term use. In order to seal the drain port 7, a drain cap 8 b that is mechanically mounted on the inner periphery of the drain port 7 is attached. The drain cap 8b is provided with a hose connection port 13 for connecting the drainage hose 12 to a substantially central portion, and only the condensed water generated by the heat exchanger 3 is aired to the substantially central portion of the drain cap 8b. A small-diameter drain hole 9 is provided in order to discharge the harmony machine body 1 to the outside. Furthermore, in order to seal the drain hole 9 during normal use, the drain hole 9 is detachable and can be fixed in a watertight manner.

  About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. When removing the slime or the like generated and accumulated in the drain pan 4 by using the air conditioner body 1 for a long time, the drain cap 8b is removed from the drain port 7 set to a large diameter, and maintenance is performed. Therefore, the drain cap 8b is mechanically fixed, so that it is excellent in water tightness and can be reliably sealed. Moreover, when only the condensed water produced | generated with the heat exchanger 3 is discharged | emitted, it is comprised by the drain plug 10 with small diameter, high dimensional accuracy, being detachable and excellent in watertightness, so that the drain hole 9 has a small diameter. Therefore, it is possible to prevent a large amount of condensed water from being drained downward from the air conditioner. In addition, after removing the drain plug 10, the drain hose 12 is connected to the hose connection port 13 provided in the drain cap 8 b, so that it does not leak below the air conditioner and can be adjusted to any place by adjusting the hose. Condensed water can be discharged.

(Embodiment 4)
FIG. 6 is a detailed view around the drain port of the air conditioner according to the first embodiment of the present invention. In FIG. 6, the hose connection port 13 provided in the drain cap 8b is different from FIG. 5 in that when the drain plug 10 is attached to the drain hole 9 of the drain cap 8b, the lower end of the drain plug 10 is the drain cap 8b. It is configured not to protrude from the lower end.

  For the air conditioner configured as described above, in addition to the third embodiment, when the decorative panel is mounted, the drain plug does not hit the contact surface with the decorative panel, and the shape of the decorative panel can be simplified. It is also possible to achieve adhesion between the decorative panel and the air conditioner.

  As described above, in the air conditioner according to the present invention, the drain cap is mechanically attached to the inner periphery of the large-diameter drain port provided in the drain pan, and a small-diameter drain hole is provided in the substantially central portion of the drain cap. Since the drain plug is configured and the workability at the time of maintenance is excellent, it can be widely applied not only to indoor units installed in the ceiling but also to equipment that drains water using a drain pump.

Sectional drawing around the drain port of the air conditioner in Embodiment 1 of the present invention Sectional drawing of the principal part of the air conditioner in Embodiment 1 of this invention. Sectional drawing of the principal part of the air conditioner in Embodiment 2 of this invention Sectional drawing around the drain port of the air conditioner in Embodiment 3 of the present invention Sectional drawing of the principal part of the air conditioner in Embodiment 3 of this invention Sectional drawing of the principal part of the air conditioner in Embodiment 4 of this invention Cross section of a conventional air conditioner Sectional view around the drain port of a conventional air conditioner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner body 2 Blower 3 Heat exchanger 4 Drain pan 5 Drain pump 7 Drain port 8a, 8b Drain cap 9 Drain hole 10 Drain plug 11 O-ring 12 Drain hose 13 Hose connection port

Claims (4)

A blower, a heat exchanger, a drain pan that receives drain water generated by the heat exchanger during cooling operation, and drain water accumulated in the drain pan are drained to the inside of the indoor unit main body arranged in the ceiling. A drain pump, and the drain pan has a drain port for draining drain water separately below the drain pump, and a drain cap for sealing the drain port, and the drain cap is the drain port. The drain cap is provided with a drain hole at a substantially central portion of the drain cap, and a drain plug that is detachable with respect to the drain hole and can be fixed with water tight is provided. Air conditioner characterized by. The air conditioner according to claim 1, wherein the drain cap is formed of a resin material, screwed into a drain port, and fixed through an O-ring. The air conditioner according to claim 1 or 2, wherein a hose connection port for connecting a drainage hose is provided in the drain cap. The air conditioner according to any one of claims 1 to 3, wherein when the drain plug is attached to the drain cap, the lower end of the drain cap does not protrude from the lower end of the drain cap.