JPH024346Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an outdoor unit of a heat pump type air conditioner, and particularly relates to an improvement of a defrosting drain port.

[Technical background of the invention and its problems]

FIG. 4 schematically shows an outdoor unit of a heat pump type air conditioner. Reference numeral 1 in the figure is a unit body consisting of a bottom plate 2, side plates (not shown), a top plate, etc. On the bottom plate 2, a compressor 3, a blower 4, a partition plate 5, a wind direction guide plate 6, an outdoor heat exchanger 7 bent into a substantially L-shape in plan view, and the like are arranged. The compressor 3 and the outdoor heat exchanger 7 communicate with each other via refrigerant pipes and with an indoor unit (not shown), and together constitute a heat pump type air conditioner.

Further, the bottom plate 2 is provided with, for example, two defrosting drain ports 8, 8, so that defrosting water from the outdoor heat exchanger 7 can be drained during heating defrosting operation. There are two ways to drain water: one is to directly guide the defrosting water to the outside from the defrosting drains 8, 8, and the other is to attach a drain nipple and connect a drain hose to drain the water to the outside.

Normally, a drain hose is used for drainage, and a drain nipple 9 as shown in Figure 5 is attached to one of the defrosting drains 8, and the other defrosting drain 8 is blocked with putty or a blind plug. Was.

By the way, in this type of heat pump type air conditioner, the frequency of defrosting operation during heating differs depending on the region where the air conditioner is installed, and therefore the amount of defrosting water produced varies significantly. When installed in a warm region, the frequency of defrosting operation is low and the amount of defrosting water produced is low. However, when installed in a cold region, defrosting operations are performed frequently and the amount of defrosting water produced is large. In particular, air conditioners installed in cold regions have the following drawbacks. That is, when the drain nipple 9 is attached and a drain hose is connected thereto, the diameter of the defrosting drain port 4 is narrowed, and drainage performance is reduced. If the defrosting water remains accumulated, it will freeze, and the generated defrosting water will also freeze on top of it, potentially clogging the defrosting drain 4.
In addition, a plurality of defrosting drain ports 8, 8 with the same diameter are provided on the bottom plate 2.
Because of this, when installing the outdoor unit, it is often difficult to decide which defrosting drain ports 8, 8 to which the drain nipple 9 should be attached, resulting in poor workability.

[Purpose of invention]

The present invention was developed in view of the above circumstances, and its purpose is to improve the drainage efficiency of defrosting water and to improve the efficiency of drain nipple installation for outdoor air conditioners. The aim is to provide a unit.

[Summary of the idea]

That is, the present invention is a unit in which a compressor, an outdoor heat exchanger, a blower, etc. are arranged on the bottom plate of the unit body, and a plurality of defrosting drain ports are provided in the bottom plate. At least one of the defrosting drains has a larger diameter than the other defrosting drains,
This is an outdoor unit of an air conditioner, characterized in that it is connected to a drain nipple.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described based on the drawings. FIG. 1 schematically shows an outdoor unit of an air conditioner, and includes a first defrosting drain port 10, which will be described later.
With the exception of the second defrosting drains 11, 11, the other components are the same as those previously explained in FIG. 1, so the same numbers will be given and new explanation will be omitted. The first defrosting drain port 10 is larger in diameter than the second defrosting drain ports 11, 11, which have the same diameter.

The first defrosting drain port 10 is connected to the second defrosting drain port 10 when the second defrosting drain port 11, 11 is not used.
A drain nipple 12 as shown in the figure is connected. That is, the second defrosting drain ports 11, 11 are
For example, it is occluded with putty or a blind plug. The drain nipple 12 includes a drainage part 13 formed on the bottom plate 2 and a hose connection part 14 projecting downward from the bottom plate 2. This hose connection part 14 is composed of two stages, a large diameter part 15 and a small diameter part 16,
A drain hose (not shown) can be connected to each of them. Naturally, the outer diameter dimension of the large diameter portion 15
DΦ is larger than the outer diameter dimension dΦ of the small diameter portion 16, and each hole is also provided accordingly.

Then, a drain hose (not shown) is connected to the large diameter portion 15 or the small diameter portion 16 of the drain nipple 12, and refrigeration cycle operation is performed. During heating and defrosting, defrosting water generated in the outdoor heat exchanger 7 is temporarily collected on the bottom plate and is further drained from the first defrosting drain port 10 via the drain nipple 12. The first defrosting drain port 10 is connected to the other defrosting drain ports 11, 11.
The larger diameter allows for efficient drainage. Therefore, the defrosting water does not accumulate on the bottom plate 2 and freeze, thereby ensuring heating performance.

Note that when the drain nipple 12 is provided in the first defrosting drain port 10, it has a larger diameter than the second defrosting drain ports 11, 11, so it can be easily identified and the installation work is easy. improves. Moreover,
Since the large diameter portion 15 is connected to the bottom plate 2, sufficient strength of the bottom plate 2 can be ensured.

In addition, the first defrosting drain port 10 is closed, and the second defrosting drain port 10 is closed.
Even when draining water by the dripping method using the defrosting drain ports 11, 11, the area of the drain ports is larger than that of the conventional method, so drainage performance is good. Of course, the number of second defrosting drain ports 11 is not limited.

In addition, since the amount of defrosting water is large especially in cold regions, it is preferable to connect a drain hose to the large diameter portion 15 of the drain nipple 12. At this time, it is convenient if the small diameter portion 16 at the end of the drain nipple 12 is removed in order to further improve drainage performance. Therefore, by providing a thin wall portion 17 between the small diameter portion 16 and the large diameter portion 15 as shown in FIG. 3, cutting at the thin wall portion 17 can be made very easily. Moreover, for example, "cut" into this thin part 17.
If the characters are engraved, it will be easier for the operator to judge.

[Effect of idea]

As explained above, according to the present invention, the diameter of the defrosting drain port to which the drain nipple is connected is made larger than the diameter of other defrosting drain ports, so that drainage by connecting the drain hose via the drain nipple is improved. improves. In addition, the drain outlet for attaching the drain nipple can be easily identified, and work efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view of an outdoor unit of an air conditioner showing one embodiment of the present invention, Fig. 2 is a side view showing how the drain nipple is attached to the bottom plate, and Fig. 3 is another embodiment of the present invention. A partial side view of a drain nipple showing an example; FIG. 4 is a schematic plan view of an outdoor unit of an air conditioner showing a conventional example of the present invention;
FIG. 5 is a side view showing how the drain nipple is attached to the bottom plate. DESCRIPTION OF SYMBOLS 1... Unit main body, 2... Bottom plate, 7... Outdoor heat exchanger, 10... First defrosting drain port, 11
...Second defrosting drain.

Claims (1)

[Scope of utility model registration request] A compressor, an outdoor heat exchanger, a blower, etc. are arranged on the bottom plate of the unit body, and a plurality of defrosting drains are provided on the bottom plate.
An outdoor unit for an air conditioner, characterized in that at least one of the defrosting drains has a larger diameter than the other defrosting drains and is connected to a drain nipple.