WO2018180293A1

WO2018180293A1 - Indoor unit for air conditioning device

Info

Publication number: WO2018180293A1
Application number: PCT/JP2018/008688
Authority: WO
Inventors: 順道宇野
Original assignee: 三菱重工サーマルシステムズ株式会社
Priority date: 2017-03-31
Filing date: 2018-03-07
Publication date: 2018-10-04
Also published as: AU2018246201A1; EP3543621A4; EP3543621A1; AU2018246201B2; JP6903465B2; JP2018173213A

Abstract

Provided is an indoor unit for an air conditioning device, the indoor unit being provided with: a base on which an indoor heat exchanger is installed and which has formed therein a water flow passage (5) for receiving drain water dripping from the indoor heat exchanger; and a drain pan (7) for receiving water conducted from the water flow passage (5) in the base. The drain pan (7) is provided with a protrusion (10) at a location onto which water dripping from a gutter (5a) for the water flow passage (5) drips. The protrusion (10) is provided with a vertically extending vertical section (10a) and laterally extending shoulders (10b).

Description

Indoor unit of air conditioner

The present invention relates to an indoor unit of an air conditioner provided with a drain pan for discharging drain water.

The indoor unit of the air conditioner is provided with a drain pan for collecting drain water condensed by the heat exchanger at the time of cooling or the like and discharging the collected drain water to the outside. Patent Document 1 below discloses, in an indoor unit provided with a drain pan, guiding drain water with a soft guide member and dropping the drain water into the drain pan via a heat transfer pipe in contact with the downstream side of the soft guide member. There is.

Japanese Patent Laid-Open No. 11-211134

However, when the drain water drips into the drain pan, a landing sound is generated by water droplets directly landing on the water surface stored in the drain pan. It is preferable to reduce the sound of landing because it may cause discomfort to the user.

This invention is made in view of such a situation, Comprising: It aims at providing the indoor unit of the air conditioning apparatus provided with the drain pan which can reduce a landing sound.

In order to solve the said subject, the indoor unit of the air conditioning apparatus of this invention employ | adopts the following means.
That is, the indoor unit of the air conditioning apparatus according to one aspect of the present invention is provided with a heat exchanger and a base portion on which a water flow path for receiving water dropped from the heat exchanger is formed; An indoor unit of an air conditioning apparatus comprising: a drain pan for receiving water led from a water flow path, wherein the drain pan includes a protrusion at a position where water dripping from the water flow path falls.

The water condensed by the heat exchanger is led to the flow channel and flows into the drain pan. The drain pan is provided with a projection at a position where water drips from the water flow channel. As a result, the dropped water collides with the projection and then flows into the drain pan, so that the water does not drop directly on the water surface stored in the drain pan. Therefore, it is possible to reduce the landing sound when the water droplets land on the water surface.

Furthermore, in the indoor unit of the air conditioning apparatus according to one aspect of the present invention, the protrusion is provided to protrude from the side wall of the drain pan, and includes a laterally positioned shoulder along the side wall There is.

By providing the protrusion on the side wall of the drain pan, the protrusion can be installed in the vicinity of the position where water drips from the flowing water channel. Then, by providing the protrusion with a laterally extending shoulder along the side wall, the droplet may contact the droplet at the shoulder even if the position dropped from the water flow passage is shifted in the lateral direction. It is possible to surely reduce the landing sound.

Furthermore, in the indoor unit of the air conditioning apparatus according to one aspect of the present invention, the tip of the shoulder portion faces upward.

Since the tip of the shoulder is directed upward, the drop can flow downward even if the drop is attached to the tip of the shoulder, and retention of water can be avoided.

Furthermore, in the indoor unit of the air conditioning apparatus according to one aspect of the present invention, the protrusion has a substantially cross shape when the protrusion is viewed from the front.

By configuring the protrusion to have a substantially cross shape when the protrusion is viewed from the front, the upper end of the portion extending in the vertical direction of the cross shape is mainly in contact with water droplets, and water drips Even if the position is shifted, it is possible to contact the water drop at any of the laterally extending shoulders of the cross shape. As described above, the landing sound can be reliably reduced with a simple projection shape.
In place of the cross shape, an inverted V shape, an inverted U shape, or a comb shape in which a plurality of portions extending in the vertical direction are arranged in the lateral direction may be used.

Since the dropped water collides with the projections and flows into the drain pan, landing noise can be reduced.

It is a perspective view showing the indoor unit concerning one embodiment of the present invention. It is the perspective view which showed the inside of the indoor unit of FIG. It is the perspective view which showed a part of drainage path of an indoor unit. It is the elements on larger scale which expanded and showed a part of drainage path of an indoor unit. It is the perspective view which showed the projection part of FIG. It is the front view seen from the VI direction of FIG. It is the side view which showed the projection part of FIG. It is the front view which looked at FIG. 7 from the VIII direction. It is the front view which showed the modification of a projection part. It is the front view which showed the modification of a projection part.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
The external appearance of the indoor unit 1 of an air conditioning apparatus is shown by FIG. The indoor unit 1 is in the form of a wall, and sucks in room air from above and blows out air-conditioned air from below to the room. The indoor unit 1 is connected to an outdoor unit (not shown), receives supply of refrigerant compressed by the outdoor unit, and adjusts the temperature of the indoor air to a predetermined temperature by the indoor heat exchanger provided inside the indoor unit 1 Do.

The interior of the indoor unit 1 is shown in FIG. In the same figure, the indoor heat exchanger and the fan are shown removed. The base plate 3 installed on the wall of the room is formed with the water flow path 5 to which the drain water condensed by the indoor heat exchanger is introduced. The water flow path 5 is a groove extending in the lateral direction (horizontal direction) of the base plate 3. Above the water flow passage 5 is provided an installation surface 6 that supports the lower surface of the indoor heat exchanger. The water flow path 5 is inclined downward to the left, whereby the drain water is led to the left as shown by the arrow A1. Of course, the inclination direction of the water flow passage 5 may be rightward.

The water flow passage 5 is formed so as to be bent at a substantially right angle at the left end of the indoor unit 1 and directed downward. A drain pan 7 is provided below the base plate 3 so as to receive drain water flowing down from the lower end of the water flow path 5. The drain pan 7 temporarily stores drain water and discharges it to the outside of the indoor unit 1.

A partially enlarged view of a region where drain water flows from the flowing water channel 5 to the drain pan 7 is shown in FIG. At the lower end of the water flow path 5, a weir 5 a for guiding drain water to the drain pan 7 is provided. Drain water is dropped downward from the tip (lower end) of the weir 5a. The projection 10 is provided on the side wall 7 a of the drain pan 7 below the weir 5 a. Below the protrusion 10, a drain port 7b for draining drain water to the outside of the indoor unit 1 is formed. In FIG. 3, reference numeral 12 denotes a fan for blowing air.

As shown in FIG. 4, the protrusion 10 is provided to protrude from the side wall 7 a of the drain pan 7. The protrusion 10 includes a vertical portion 10a extending in the vertical direction and a shoulder portion 10b extending in the lateral direction so as to cross both sides of the vertical portion 10a. The upper end of the vertical portion 10a is disposed immediately below the weir 5a. Thus, the drain water dripping from the weir 5a is directly received.

As can be seen from FIG. 5, the shoulder portion 10 b stands obliquely upward from the side wall 7 a of the drain pan 7. As described above, the shoulder portion 10 b is provided to be directed obliquely upward, so that drain water can be smoothly flowed downward.

As shown in FIG. 6, the protrusion 10 has a substantially cruciform shape when viewed from the front in the direction in which the shoulder 10 b stands (direction of arrow VI). That is, the shoulder portion 10 b is provided so as to intersect at right angles with the vertical portion 10 a.

As shown in FIG. 7, when the protrusion 10 is viewed from the side, the vertical portion 10a has an upper side 10a1 extending in a substantially horizontal direction, and is connected to the upper side 10a1 and diagonally downward and connected to the side wall 7a. Has an oblique side 10a2. The shoulder 10 b extends in a direction parallel to the oblique side 10 a 2.

In FIG. 8, when the lower surface of the shoulder 10b is viewed from the front as shown by the arrow VIII in FIG. 7, the height is gradually lowered as the upper end 10b1 of the shoulder 10b goes away from the vertical portion 10a.

According to the indoor unit 1 provided with the above-mentioned projection part 10, the following effects are produced.
The drain water condensed by the indoor heat exchanger is led to the flowing water channel 5 and flows from the weir 5 a to the drain pan 7. The side wall 7 a of the drain pan 7 is provided with a protrusion 10 at a position where the drain water drips from the water flow channel 5. More specifically, the upper side 10a1 of the vertical portion 10a is located immediately below the weir 5a. As a result, the drain water to be dropped collides with the protrusion 10 and then flows into the drain pan 7 so that the water does not directly land on the water surface stored in the drain pan 7. Therefore, it is possible to reduce the landing sound when the water droplets land on the water surface.

By providing the protrusion 10 on the side wall 7 a of the drain pan 7, the protrusion 10 can be positioned in the vicinity of the weir 5 a of the water flow channel 5. Then, by providing the shoulder 10b extending in the lateral direction along the side wall 7a in the projection 10, even if the position where the drain water drips from the weir 5a is shifted in the lateral direction, the shoulder 10b It can be in contact with the droplet, and the landing sound can be reduced reliably.

The protrusion 10 is configured to have a substantially cruciform shape when viewed from the front in the projecting direction of the shoulder 10 b of the protrusion 10 (direction of arrow VI in FIG. 5), thereby extending in the vertical direction of the cruciform The upper side 10a1 of the vertical portion 10a is mainly in contact with the water droplet, and even if the water dripping position is shifted, the water droplet is in contact with the water droplet somewhere in the laterally extending shoulder 10b of the cross shape. can do. As described above, the landing sound can be reliably reduced with a simple projection shape.

Since the shoulder 10b is formed so that the upper end 10b1 of the shoulder 10b is directed obliquely upward, the droplet can flow downward even when the droplet adheres to the upper end 10b1 of the shoulder 10b, It is possible to avoid stagnation.

In addition, although the above-mentioned projection part 10 is made into substantially cross shape when it is a front view, it can deform | transform as follows.
For example, as shown in FIG. 9A, when viewed from the front, the protrusion 10 ′ may be formed in an inverted V shape. In this case, the upper tip 10'a is mainly for receiving droplets, and the laterally extending shoulders 10'b are for receiving droplets when the drip of the drain water is shifted to the side. Do.

Further, as shown in FIG. 9B, when viewed from the front, the projection 10 ′ ′ may have a comb-tooth shape in which a plurality of vertical portions 10′′a and 10′′b extending in the vertical direction are arranged in the lateral direction. In order to receive droplets mainly at the vertical portion 10′′a located at the center, the liquid is dropped if the drip of drain water is shifted to the side at the vertical portion (shoulder portion) 10′′b located at the side. Get to receive drops.

1 indoor unit 3 base plate (base part)
Reference Signs List 5 water channel 5a 6 installation surface 7 drain pan 7a side wall 7b drain 10 protrusion 10a vertical portion 10a1 upper side 10a2 oblique side 10b shoulder 10b1 upper end 12 fan

Claims

A base portion provided with a heat exchanger and a water flow passage for receiving water dripping from the heat exchanger;
A drain pan for receiving water led from the water flow passage of the base portion;
An indoor unit of an air conditioner comprising
The indoor unit of an air conditioner according to claim 1, wherein the drain pan includes a protrusion at a position where the water dripping from the water flow channel falls.
The indoor unit of the air conditioner according to claim 1, wherein the projection is provided to project from the side wall of the drain pan, and includes a laterally positioned shoulder along the side wall.
The indoor unit of an air conditioning apparatus according to claim 2, wherein the shoulder has an end facing upward.
The indoor unit of an air conditioning apparatus according to claim 2 or 3, wherein the protrusion has a substantially cross shape when the protrusion is viewed from the front.