JPH0440109Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a duct type ceiling-embedded air conditioning unit installed in the ceiling.

(b) Conventional technology When an air conditioning unit is operated for a long period of time, dust and moss adhere to the drain pan below the heat exchanger, making it difficult for drain water to drain smoothly. As suggested, the bottom plate of the unit body was removed, the drain pan was taken out from below the unit body, and the drain pan was cleaned.

(c) Problems to be solved by the invention With a structure in which the bottom plate is removed, the refrigeration equipment cannot be placed on the bottom plate, so it may be difficult to assemble the refrigeration equipment into the unit body. There was a risk that the dust inside would fall into the room. Moreover, since the drain pan is connected to a flexible drain pipe, you must either support the drain pan with your hands while cleaning it, or remove the drain pipe and lower the drain pan onto the indoor floor before cleaning. The problem was that it was difficult to clean.

The present invention provides an air conditioning unit that solves these problems.

(d) Measures to solve the problem In this proposal, a fixing device is fixed on the bottom plate of the unit body, and a support device that supports the drain pan from below is detachably attached to this fixing device.
A service opening that is covered with a removable lid is provided on the side plate of the unit body facing the support.

(e) Action When cleaning the drain pan, remove the lid, insert your hand through the service opening, and use a tool to remove the support from the fixture. Then, when the support is removed from the service opening, the flexible drain pipe of the drain pan is lowered while being bent, and the drain pan is placed on the fixture in an inclined state with the inner surface facing the service opening. Next, insert a cleaning tool through the service opening to remove dust, moss, etc. that has adhered to the inner surface of the drain pan inside the unit body. Once the drain pan has been cleaned in this manner, the support is attached to the fixture to support the drain pan in a predetermined position, and the service opening is closed with the lid, completing the work.

(F) Example To explain based on the drawings, 1 is the main body of a ceiling-embedded air conditioning unit, which includes a blower 2, a user-side heat exchanger 3, and a heat insulating material 4 that receives drain water from this heat exchanger. A drain pan 5, a double-pipe heat exchanger 6 on the heat source side, and a compressor 7 are housed.

Reference numeral 8 denotes a bottom plate of the unit main body 1, on which a double pipe heat exchanger 6 and a compressor 7 are placed, and a hanging device 10 which is suspended from a ceiling beam 9. By fixing this, the unit main body 1 can be installed behind the ceiling 11.

12 is a fixture fixed on the bottom plate 8 by welding or the like;
The lower end of 13 is removably attached to the fixture 12 and screws 14, and the upper end is a receiving plate 15 for the drain pan 5.
16 is a service opening that is provided on the side plate 17 facing the support and is closed with a removable lid 18; 19 is a suction duct that leads indoor air to the user-side heat exchanger 3; Reference numeral 20 designates a blow-off duct that guides indoor air cooled by the user-side heat exchanger 3 and sent out by the blower 2 into the room, and 21 designates a flexible drain pipe connected to the drain pan 5.

As mentioned above, the circumferential edge 22 of the bottom plate 8 is raised so that it has sufficient strength to support the load of the unit body 1. Fixture 1 is placed so that support 13 is located at approximately the same height as service opening 16.
The height dimension of 2 is determined.

The proposed unit is constructed as described above, and after operating the compressor 7 and cooling and condensing the discharged refrigerant with water passing through the heat source side double pipe heat exchanger 6,
When a cooling operation is performed in which indoor air is cooled by evaporation in the user-side heat exchanger 3, drain water is generated in the user-side heat exchanger 3, and this drain water flows down into the drain pan 5 and then flows through the drain hose. It is discharged outdoors at 21.

If such cooling operation is carried out for a long period of time and dust or moss adheres to the inner surface 23 of the drain pan 5, the ceiling 11
The operator removes the inspection lid 25 of the inspection opening 24, puts his upper body through this inspection opening 24, removes the lid 18 of the unit body 1, and then opens the service opening 16.
Open. Then, insert your hand through the opening 16, remove the screw 14 with a tool, remove the support 13 from the fixture 12, and take out the support 13 together with the receiving plate 15 from the service opening 16 outside the unit main body 1. The flexible drain pipe 21 of the drain pan 5 is lowered while being bent, and the drain pan 5 is placed on the fixture 12 in an inclined state with the inner surface 23 of the drain pan 5 facing the service opening 16 as shown by the dashed line. Next, a cleaning tool is inserted through the service opening 16 to remove dust, moss, etc. adhering to the inner surface 23 of the drain pan 5 inside the unit body 1. After cleaning the drain pan 5 in this manner, the support 13 is removed together with the receiving plate 15 through the service opening 16.
Then, insert the drain pan 5 into the unit main body 1, support the drain pan 5 in a predetermined position, and open the service opening 16 with the lid 18.
After closing the inspection port 24 with the inspection lid 25, the work is completed.

(g) Effects of the invention According to this invention, by removing the support 9 of the drain pan, the drain pan is lowered to a lower position inside the unit body and cleaning can be done through the service opening on the side plate of the unit body, making it easier to remove the drain pan by hand. It can be easily cleaned without having to support it or pull out the drain pipe.

Furthermore, even if dust adhering to the outer surface of the drain pan falls during this cleaning, it is caught by the bottom plate and does not come out of the unit body, so there is no risk of staining the surrounding areas of the unit body.

Furthermore, since the bottom plate is used as the base of the unit body, the refrigeration equipment can be placed on the bottom plate, making design and manufacturing easier.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view of an air conditioning unit showing an embodiment of the present invention. 1...Unit body, 2...Blower, 3...Heat exchanger, 5...Drain pan, 8...Bottom plate, 12...
... Fixture, 13... Support, 16... Service opening, 17... Side plate, 18... Lid.

Claims (1)

[Scope of utility model registration request] The air conditioning unit has a blower, a heat exchanger, and a drain pan for receiving drain water from the heat exchanger housed within the unit body, the air conditioning unit being characterized by having a fixture fixed onto the bottom plate of the unit body, a support that is detachably attached to the fixture and supports the drain pan from below, and a service opening that is closed by a detachable lid provided on the side plate of the unit body opposite the support.