JPH0345055Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in a drainage device for condensate condensed within an air conditioner.

[Prior art]

As a conventional drainage device for this type of air conditioner, there is known a structure shown in, for example, Japanese Utility Model Application Laid-Open No. 56-138151. To briefly explain this using FIGS. 1 and 2, in the air conditioner shown by reference numeral 1 in the figure, there are a pair of drain ports 2 arranged in parallel at the top and bottom at the bottom of the back side of the equipment casing. , 3 are provided. Drain generated within the air conditioner 1 is normally led to the drain ports 2 and 3 mentioned above and discharged to the outside. As shown in FIG. 2, the drain collected on the drain pan 4 provided on the body is scooped up by the action of the slinger ring 7 provided on the outer periphery of the cooling fan 6 of the condenser 5 and sprayed onto the condenser 5. It is also configured so that an automatic evaporation method can be adopted, in which water is evaporated using the heat radiated from the water, thereby eliminating the need for drainage. That is, when this automatic evaporation is performed, the lower drain port 3 is closed with a rubber stopper 8, and the water level on the drain pan 4 is lowered to the second level.
It is only necessary to raise the drain to the point indicated by line a in the figure so that the drain can be scooped up by the slinger ring 7.

However, in such an automatic evaporation method, noise is generated when the slinger ring 7 scoops up the condensate, so the configuration is such that the user can select either the automatic evaporation method or the external discharge method as described above. There is. That is, in the case of this external discharge method, by removing the rubber stopper 8 from the lower drain port 3, drain flows out from the drain port 3, and the water level drops to line b in the figure. In this state, the slinger ring 7 does not come into contact with the water surface and rotates idly, thereby preventing noise.

However, in the above-mentioned conventional structure, the surface tension of the drain against the inner wall of the lower drain port 3 from which the drain flows out may cause the water level to accumulate above line b, which not only makes it impossible to drain water reliably, but also There is a risk that the slinger ring 7 will come into contact with the water surface of the collected drain, causing noise during splashing and causing problems such as receiving complaints from users. There are also structural problems such as the need for a rubber stopper 8 for closure, and it is desired that some kind of countermeasure be taken.

For this purpose, the present applicant proposed a drainage device for an air conditioner as described in Japanese Utility Model Application Publication No. 58-47026. In this device, a removable drain body is attached to a U-shaped groove cut out in the side wall of the drain pan, and the height of the drain outlet can be changed by attaching the drain body upside down or upside down. This is a drainage device that can be switched between the drain pan and the water level of the drain collected in the drain pan. Therefore, there is an advantage that the slinger ring installed in the cooling fan of the air conditioner can be used to scoop up the condensate and spray it onto the condenser, or to drain it to the outside, which can be switched arbitrarily and with a simple operation. .

[The problem that the idea aims to solve]

However, in such a conventional system, the water level may accumulate above line b in Figure 2 due to the surface tension of the drain as described above, and as a result, reliable drainage cannot be performed, so the slinger ring 7 is It has not been possible to solve the problem of contact with the water surface of the collected condensate, which generates noise when splashing.

[Means to solve the problem]

In order to solve this problem, the present invention includes a drain pipe 11 that is rotatably mounted by engaging an annular groove 11a with a fitting hole 10 drilled below the side wall 4a of the air conditioner. In a drainage device in which a drainage pipe 11 is integrally formed with a large-diameter drainage inlet part 12a and a small-diameter drainage outlet part 13a provided eccentrically to the drainage inlet part 12a, a drain pipe is provided on the inner wall of the drainage pipe along the drainage direction. A groove 14 is formed which is open at both ends.

[Example of idea]

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

Figures 3 to 5 a and b show an embodiment of a drainage device for an air conditioner according to the present invention,
In these figures, the same or corresponding parts as in FIGS. 1 and 2 are denoted by the same reference numerals, and the explanation thereof will be omitted.

Now, according to the present invention, the side wall portion 4a of the drain pan 4 is provided integrally or separately from the equipment housing.
A large-diameter fitting hole 10 is bored in the drain pipe 11, and a drain pipe 11 having an annular groove 11a that fits into the fitting hole 10 is rotatably mounted. This drain pipe 1
1 consists of a large-diameter cylindrical body 12 forming a large-diameter drainage inlet portion 12a, and a small-diameter cylindrical body 13 that is eccentrically connected to the large-diameter cylindrical body 12 and forms a small-diameter drainage outlet 13a. It is formed as follows. In this embodiment, the small diameter cylindrical body 13 is formed so that its outer inner wall portion is in contact with the circumference forming the inner wall portion of the large diameter cylindrical body 12. It goes without saying that the annular groove 11a for the fitting hole 10 is provided on the outer side wall of the large diameter cylindrical body 12 near the end thereof.

In the drain pipe 11 having the above-mentioned configuration, a portion where the inner walls of the large and small cylindrical bodies 12 and 13 are in contact with each other has both ends that are parallel to each other along the axial direction of the drain pipe 11, that is, the drainage direction. A sawtooth groove 14 opening at the end surface of the drain pipe 11 is integrally formed.

According to this configuration, due to the eccentric relationship between the large and small cylindrical bodies 12 and 13, when the drain pipe 11 has its drain outlet portion 13a located upward as shown in FIG. If the water level rises to the position shown by line a, and vice versa, the water level will fall to the position shown by line b. Therefore, in such a configuration, the internal water level can be changed up or down simply by rotating the drain pipe 11 and selectively positioning the outlet section 13a either up or down. It is possible to easily and appropriately switch between the presence or absence of a drain plastic, that is, the automatic evaporation method and the external discharge method. Furthermore, in the above-mentioned configuration, the serrated grooves 14 formed on the inner wall of the drain pipe 11 reduce the surface tension of the drain when draining to the outside as shown in FIG. Moreover, it becomes possible to carry out the process appropriately and improve drainage performance.
Therefore, in this case, the water level in the drain pan 4 will surely fall to the position of line b, and the conventional problem of slinger rings (indicated by 7 in Figure 2) coming into contact with the water surface will disappear, and the noise will be reduced. etc. does not occur, and it is possible to reliably switch between the presence and absence of splashes.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape and structure of each part may be modified and changed as appropriate. For example, the drainage groove 14 on the inner wall of the drain pipe 11 may be limited to a serrated shape. First, various modifications are possible, and the groove 14 is not limited to a part of the inner wall as in the embodiment, but may be formed around the entire circumference or over a wider area. It is.

[Effect of idea]

As explained above, according to the drainage device for an air conditioner according to the present invention, the groove 14 is formed on the inner wall of the drain pipe along the drainage direction and has both ends open, thereby eliminating the influence of the surface tension of the drain. This provides the effect of ensuring reliable drainage.

[Brief explanation of the drawing]

Figures 1 and 2 are a perspective view of a conventional air conditioner seen from the back and a cross-sectional view of the main parts showing an enlarged view of the drain port, and Figure 3 is a drain of the air conditioner according to the present invention. FIG. 4 is an enlarged sectional view of the main part of the drain pipe, which is a feature of the device, and FIGS. 5 a and 5 b are schematic sectional views illustrating how the drain pipe is used. . 1...Air conditioner, 4...Drain pan, 5...
Condenser, 6... Cooling fan, 7... Slinger ring, 10... Fitting hole, 11... Drain pipe, 1
2...Large diameter cylindrical body, 12a...Drainage inlet part, 13
...Small diameter cylindrical body, 13a...Drainage outlet part, 14...
...Drainage groove.

Claims (1)

[Scope of utility model registration request] Fitting hole 1 drilled below the side wall 4a of the air conditioner
The drain pipe 11 is rotatably mounted by engaging the annular groove 11a with the drain pipe 1.
1 is a large-diameter drainage inlet portion 12a and a small-diameter drainage outlet portion 1 provided eccentrically to the drainage inlet portion 12a.
3a, the drainage device for an air conditioner is characterized in that a groove 14 is formed in the inner wall of the drain pipe along the drainage direction and whose both ends are open.