JPH094869A - Indoor device of air conditioner - Google Patents

Abstract

PURPOSE: To prevent water droplets from splashing into an air conditioned room and to enable always a comfortable air conditioning to be attained by a method wherein when a nose-claw part receives heat exchanging air and drain water, it prevents the from penetrating into a gap between the nose and a drain pan. CONSTITUTION: Drain water generated at a front side heat exchanger 28a drips into a front side drain pan 30. Even if this drain water is sprung back at the drain pan 30 and drops into a gap between a front side drain pan rear surface wall 30b and a nose rising piece 33b, the water is shielded by a nose claw part 33c so as to prevent the drain water from penetrating into an air blowing guide passage 34. In addition, the nose claw part 33c moves around an entire longitudinal length of the front side drain pan rear surface wall 30b and is engaged there, a gap between the front drain pan 30 and the nose rising piece part 33b is completely closed, resulting in that no clearance is left. Accordingly, heat exchanging air to be blown toward a gap between the front side drain pan rear surface wall 30b and the nose rising piece 33b is shielded by the nose claw part 330 and can not penetrate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit which constitutes an air conditioner, and more particularly to an improvement of a nose which constitutes a part of a ventilation guide path and a structure of a display section which displays display items.

[0002]

2. Description of the Related Art An air conditioner generally used comprises an indoor unit arranged in a room to be air-conditioned and an outdoor unit arranged outdoors, and these units are connected to each other by a refrigerant pipe and electric wiring. .

Particularly, in the indoor unit, an indoor heat exchanger and a blower are arranged in a unit body having a suction port and a blowout port, and a blower guide path is formed between the blower and the blowout port.

Then, the blower operates along with the refrigeration cycle operation for the indoor heat exchanger, sucks the air in the air-conditioned room into the main unit of the unit through the suction port and guides it to the indoor heat exchanger, where heat is exchanged, and then the ventilation guide is provided. The air is blown from the outlet to the air-conditioned room via the passage.

[0005]

A main part of a conventional air conditioner indoor unit is as shown in FIGS. 5 (A) and 5 (B). A drain pan 2 is disposed below the indoor heat exchanger 1 and receives drain water generated in the indoor heat exchanger 1 during cooling operation, dehumidifying operation, and the like.

A nose 3 is attached to the drain pan 2. The nose 3 extends from the lower surface of the drain pan 2 toward the blower (not shown) arranged on the back side of the indoor heat exchanger 1. With the lower surface of these drain pans 2 and the nose 3,
A part of the ventilation guide path 4 is configured.

In addition, a heat insulating material 5 is provided on the front side of the drain pan 2.
Is attached, and the space 7 formed between the heat insulating material 5 and the unit body front panel 6 is used,
The display unit 8 is arranged.

The display unit 8 has display items such as "operation" and "timer" on the front panel 6 side, and an electronic display component (LED) 9 is arranged at a position corresponding to these items. These electronic display components 9 are mounted on a printed circuit board 10, and the circuit board 10 is mounted and supported on a base body 11.

When the user operates a remote control panel (remote control) (not shown) attached to the air conditioner, the electronic display component 9 of the item corresponding to the designated request emits light and the display item is displayed.

The first problem is the mounting structure of the nose 3 to the drain pan 2. That is, the tip claws 3a of the nose 3 are hooked in the recesses 2a formed on the lower surface of the drain pan 2 to keep them in the same plane, while the rising piece 3b is provided at the end of the drain pan 2 on the blower side. Further, a claw portion 3c is integrally provided on the upper end portion. The claw portion 3c is hooked on the upper edge of the rear side wall portion 2b of the drain pan 2, and the nose 3 is attached to the drain pan 2.

A plurality of the claw portions 3c are provided at predetermined intervals along the longitudinal direction of the nose 3. In other words, the drain pan rear side wall portion 2b of the portion where the claw portion 3c is not hooked
In addition to being exposed, there is a gap between this and the nose rising piece 3b.

Therefore, a part of the wind blown from the blower causes the drain pan rear side wall portion 2b and the nose rising piece portion 3b.
Intrudes into the inside through the gap. While the drain pan 2 receives the drain water at a low temperature, the air having a temperature higher than that of the drain pan 2 enters the gap, and the drain pan 2 is likely to be exposed to the outer surface of the drain pan 2.

Alternatively, part of the drain water dropped on the drain pan 2 may bounce off and drop inward through the gap between the drain pan rear side wall portion 2b and the nose rising piece portion 3b. In any case, there is a risk that dew existing in these gaps will come out to the surface of the blower guide path 4 through the engaging portion of the drain pan recess 2a and the nose claw 3a due to the capillary phenomenon.
Then, it is considered that the air is mixed with the heat exchange air guided to the air guide passage 4 and blown out into the air-conditioned room, and in this state, the comfortable air conditioning is impaired.

The second problem is prevention of adhesion of water droplets to the electronic display component 9 and the printed circuit board 10. That is, if water droplets adhere to the electronic display component 9 and the printed circuit board 10, a portion that is not originally electrically connected is short-circuited via the water droplets, which causes a failure.

In the conventional structure, there is a risk that part of the drain water that has fallen on the drain pan 2 will bounce off and splash on the electronic display component 9 and the printed circuit board 10 through the gap between the front panel 6 and the drain pan 2. In addition, dew may occur on the surface of the heat insulating material 5, and the dew may adhere to the base body 11 and wet the printed circuit board 10 and the like. Are separated from each other.

However, there is not a sufficient space space 7 between the front panel 6 and the heat insulating material 5. on the other hand,
Since the printed circuit board 10 and the base body 11 have a long dimension in the longitudinal direction to some extent, disposing the base body 11 apart from the heat insulating material 5 is a very troublesome mounting work, and variations easily occur. is there.

The present invention has been made in view of the above circumstances, and its first object is to provide a structure in which heat exchange air and drain water do not enter between the drain pan and the nose. It is an object of the present invention to provide an indoor unit of an air conditioner capable of preventing water droplets from splashing into an air-conditioned room and always ensuring comfortable air conditioning.

A second object is to protect the electronic body and the substrate from the water droplets even if the base body holding the substrate gets wet, so that an electric accident is surely caused. It is intended to provide an indoor unit of an air conditioner that prevents the air conditioner.

[0019]

In order to satisfy the above object, an indoor unit of an air conditioner according to a first aspect of the present invention is, as a first aspect, a unit main body having an intake port and an outlet port, and an inside of the unit main body. The indoor heat exchanger, which is housed in the air conditioner and is arranged to face the suction port, and the air in the room to be conditioned is sucked into the unit body from the suction port and guided to the indoor heat exchanger where the heat is exchanged and then the outlet port A blower that blows air from the air-conditioned room to the air-conditioned room, a drain pan that is placed below the indoor heat exchanger and receives drain water, and guides the air that has been heat-exchanged by the indoor heat exchanger that is formed between the blower and the outlet. And a nose that is formed as a part of the blower guide path and extends from the lower surface of the drain pan to the blower side, and the nose includes a rising piece portion that is bent at the approaching position of the blower. , Characterized in that a claw portion which wraps around the drain pan upper edge inwardly provided at the upper edge of the rising piece portion.

According to a second aspect of the present invention, the claw portion of the nose according to the first aspect is provided over the entire longitudinal direction of the nose rising piece portion. As a third aspect, the claw portion of the nose according to the first aspect is provided at a plurality of positions at predetermined intervals along the longitudinal direction of the nose, and ribs that are in contact with the upper end edge of the drain pan are integrally formed between the claw portions. It is characterized in that it is provided in.

In order to satisfy the above object, an indoor unit of an air conditioner according to a second aspect of the present invention is, as a fourth aspect, a unit main body having a suction port and a blow-out port, and is housed in the unit main body. The indoor heat exchanger, which is placed opposite to the air conditioner, and the blower that sucks air from the air-conditioned room into the unit main body from the air inlet and guides it to the indoor heat exchanger, where it exchanges heat and then blows it from the air outlet to the air-conditioned room. And a drain pan arranged below the indoor heat exchanger for receiving drain water, and a display unit arranged in the space between the unit body and the front side of the drain pan. The display unit is an electronic display component. And a base body that holds the substrate and has an opening on the front side, and a cover that covers the front opening of the base body. A fifth aspect of the present invention is characterized in that the cover according to the fourth aspect is pivotally attached to the base body via a hinge portion so that the front opening portion can be opened and closed.

[0022]

In the first and second aspects of the invention, the claw portion integrally provided on the nose receives the heat exchange air blown from the blower and the drain water bounced by the drain pan, and the nose and drain pan. Prevent entry into the gap between.

According to a third aspect of the present invention, the plurality of claw portions integrally provided on the nose and the ribs between these claw portions receive the heat exchange air blown from the blower and the drain water bounced by the drain pan, and the nose and the drain pan. Prevent entry into the gap between.

[0024] Claims 4 and 5 being the second invention.
Then, the base body and the cover protect the electronic display component and the substrate from the drain water splashed by the drain pan and the dew condensation, and prevent the short circuit accident due to the water wetting.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an indoor unit of an air conditioner.
The unit body 20 includes a front panel 21 and a rear plate 22. A suction grill 23 is detachably arranged on the front side of the front panel 21. A front suction port 24a is opened in the suction grill 23, and an upper suction port 24 composed of a grill 25 is provided in an upper portion of the front panel 21.
b is opened.

An indoor heat exchanger 26 is arranged in the unit body 1 so as to face the front and upper suction ports 24a and 24b. An indoor blower 27 is arranged so as to be covered by the indoor heat exchanger 26.

The heat exchanger 26 is a combination of a main heat exchanger 26A formed in an inverted V shape and an auxiliary heat exchanger 26B which is straight and is provided along a part of the main heat exchanger. Become. Since the arcuate portion of the main heat exchanger 26A is located on the front surface side, this portion is referred to as the front heat exchanger 28a, and the straight portion located at the rear of this portion is the rear heat exchanger 2a.
8b.

Front heat exchanger 28a formed in an arc shape
Is at a position facing the front suction port 24a. The rear heat exchanger 28b that is inclined obliquely downward from the front part to the rear part
Is at a position facing the upper suction port 24b via the auxiliary heat exchanger 26B.

The indoor blower 27 is composed of a fan motor (not shown) and a cross flow fan fitted to the rotating shaft of the fan motor. The fan motor and the cross-flow fan have circular shapes with almost the same diameter.

The lower end of the front heat exchanger 28a is inserted into the front drain pan 30, and the lower end of the rear heat exchanger 28b is inserted into the rear drain pan 31 integrally formed with the rear plate 22. These front and rear drain pans 30 and 31 communicate with each other via a communication passage (not shown).

Below the front drain pan 30, there is provided a blow-out port 32 which opens to the lower part on the front side of the unit main body 20. The outlet 32 has a vertical louver 38.
And a left-right louver (not shown) is provided.

The upper end of the rear plate 22 has an upper suction port 24.
The rear drain pan 3 is connected to the rear end of b.
1 and the side part of the indoor blower 27 so as to extend over the outlet 32.

A blower guide path 34 is formed by a part of the rear plate 22 extending from the side of the indoor blower 27 to the outlet 32, a nose 33 and a front drain pan 30 which will be described later.
On the other hand, a heat insulating material 35 is provided on the front side wall of the front drain pan 30.
Is attached, and a display portion 37, which will be described later, is arranged in a space space 36 between the heat insulating material 35 and the unit body front panel 21.

The front panel 21 facing the display section 37
Displayed items such as "driving" and "timer" are written on the parts, and corresponding items are displayed by operating the remote controller.

Next, the nose 33 and the display section 37.
Will be described in detail with reference to FIGS. 2 and 3. On the lower surface of the front drain pan 30, a hooking recess 30a is provided along the longitudinal direction, and a protrusion 33a formed at the tip of the nose 33 is hooked there. The nose 33 and the drain pan lower surface portion 30b are formed in the same plane.

The nose 33 extends toward a blower (not shown), and its end portion is a rising piece portion 33b bent and formed along the blower. The rising piece portion 33b is formed to have a rising dimension slightly higher than the upper edge of the rear side wall portion 30b of the front drain pan 30.

From the upper end of the rising piece 33b to the claw 33c
Are integrally provided so as to project and are hooked on the upper edge of the front drain pan rear side wall portion 30b. It should be noted that the claw portion 33 provided integrally with the nose 33 is provided on the front drain pan rear side wall portion 30.
b Wrap around the upper edge.

The claw portion 33c is provided over the entire length in the longitudinal direction of the rising piece portion 33b and hooks over the entire length in the longitudinal direction of the drain pan rear side wall portion 30b. It is completely closed with 33b and there is no gap.

On the other hand, the display section 37 is the printed circuit board 4
0, and a plurality of electronic display components (LEDs) 41 arranged at predetermined intervals in the longitudinal direction of the printed circuit board,
It is composed of a base body 42 to which the printed circuit board is attached and supported, and a cover 43 pivotally attached to the base body so as to be openable and closable.

The display portion 37 is arranged in the space space 36 formed between the heat insulating material 35 and the front panel 21 and having a very small capacity.
Since a is arranged so as to press the display portion 37 against the heat insulating material 35, no special tool is required and the display portion 37 can be attached without paying close attention.

The base body 42 has a U-shaped cross section when viewed from the side, has a rectangular frame shape when viewed from the front, and has an open front surface. The printed circuit board 40 is the base body 4
2 Inserted from the front opening and fitted into the inside.

The cover 43 opens and closes the front opening of the base 42. That is, a plurality of hinges 44 are provided on the upper ends of the cover 43 and the base body 42 with a predetermined gap.
While the base member 42 is formed,
2a and a hooking portion 43a are integrally provided at the lower end of the cover 43, and the hooking portion 43a can be hooked on and released from the hooking portion 42a.

Therefore, the cover 43 is pivotally attached to the base body 42 via the hinge 44, and the printed board 40 is pressed and fixed to the base body with the front body front opening being closed.

However, the indoor blower 27 is driven along with the refrigeration cycle operation, and the front and upper suction ports 24a,
Air in the air-conditioned room is sucked into the unit main body 20 from 24b. The heat is exchanged by flowing through the front heat exchanger 28a and the auxiliary heat exchanger 26B and the rear heat exchanger 28b.
For heat exchange.

The air that has exchanged heat with these heat exchangers 28a, 28b, 26B is guided from the blower 27 to the blower guide passage 34 and blown out from the blowout port 32 to condition the air in the air-conditioned room.

With the heat exchange action of the heat exchanger 26,
The drain water generated in the front heat exchanger 28a, in which the water contained in the air in the air-conditioned room is condensed to generate the drain water, is dropped into the front drain pan 30.

Even if this drain water bounces off the front drain pan 30 and falls between the front side drain pan rear side wall 30b and the nose rising piece 33b, it is blocked by the nose claw 33c and enters. Can not. As a result, the drain water is prevented from penetrating into the air guide passage 34.

Further, the claw portion 33 provided over the entire length in the longitudinal direction from the upper end portion of the rising piece portion 33b of the nose 33.
c extends around the entire length in the longitudinal direction of the front drain pan rear side wall portion 30b and is hooked there.
And the nose rising piece 33b are completely closed, and there is no gap.

Therefore, the front drain pan rear side wall portion 3
The heat exchange air blown out between 0b and the nose rising piece 33b is blocked by the nose claw 33c and cannot enter. As a result, the front side drain pan rear side wall portion 30b is prevented from being exposed to dew, and the permeation into the air guide passage 34 is prevented.

Further, even if the drain water bounces to the front panel 21 side, the front panel 21 is pressed against the heat insulating material 35, so that the display portion 37 is not easily splashed. Even if the space 37 is penetrated through the gap and the display 37 is caught, at least the electronic display component 41 and the printed circuit board 40 are protected by the base body 42 and the cover 43. There is no wetness.

Similarly, even if the heat insulating material 35 is exposed to dew and the base body 42 gets wet, the electronic display component 41 and the printed circuit board 40 have the base body 42 and the cover 43.
It is protected from water and does not get wet. In any case, a short circuit accident between the electronic display component 41 and the printed circuit board 40 can be reliably prevented.

In the above embodiment, the nose claw portion 33 is used.
Although c is provided over the entire length in the longitudinal direction of the rising piece portion 33b, the present invention is not limited to this and may be configured as shown in FIG. (Note that the same parts as those described above are designated by the same reference numerals and a new description thereof will be omitted.) That is, here, the nose claw portion 330c is the rising piece portion 3.
A plurality of them are provided at a predetermined interval in the longitudinal direction of 3b. A rib 330d is provided between the claw portions 330c. These ribs 330d are integrated with the leading end of the rising piece portion 33b and are integrated with the claw portions 330c on both sides. Therefore, the tips of the ribs 330d come into contact with the upper edge of the front drain pan rear side wall portion 30b and project inward.

In this way, the rib 3 is provided between the claw portions 330c.
By integrally providing 30d, these claw portions 330c
The ribs 330d block the invasion of the heat exchange air and the drain water, prevent the permeation of the blowout guide passage 34, and provide comfortable air conditioning, as described above.

Then, the claw portion 330c rises and the rising piece portion 33b is formed.
Since it is not provided over the entire length of the claw portion 330c, it is possible to avoid rigidification of the claw portion 330c, so that the nose 33 can be easily attached to the front drain pan 30 and the attachment workability is improved.

It should be noted that the hinge 44a in FIG.
Unlike the above, it is integrally formed with the base body 42 and the cover 43. In addition, it goes without saying that various modifications can be made without departing from the scope of the present invention.

[0056]

As described above, according to the invention of claim 1, the nose includes the rising piece portion and the claw portion provided on the upper edge of the rising piece portion and wrapping around the inside of the upper edge of the drain pan. Prevents the entry of heat exchange air and drain water between the drain pan and the nose. Therefore, the water droplets are prevented from splashing into the air-conditioned room through the blowout guide path,
It has the effect of always ensuring comfortable air conditioning.

According to the second aspect of the invention, since the claw portion is provided over the entire length of the nose rising piece portion, there is no invasion of heat exchange air and drain water between the drain pan and the nose.

According to the third aspect of the present invention, since the above-mentioned claw portions are provided at a plurality of positions at a predetermined interval, and ribs that abut against the upper end edge of the drain pan are integrally provided between them, the drain pan of the heat exchange air and drain water is provided. It is possible not only to reliably prevent the intrusion between the nose and the nose but also to avoid the rigidity of the claw portion and improve the workability of attaching to the drain pan.

According to the fourth aspect of the present invention, the display portion arranged on the front side of the drain pan in the space space with the unit body is provided with the substrate to which the electronic parts are attached, and the opening portion on the front side for holding the substrate. Since the base body and the cover that covers the front opening of the base body are provided, even if the drain water bounces off the drain pan or there is a dew phenomenon, it is possible that the water will not adhere to the electronic display components and the substrate. It has the effect of surely preventing the occurrence of electric accidents by protecting it from being protected.

According to the fifth aspect of the invention, the hinge portion is used to
Since the cover is pivotally attached to the front opening of the base body so as to be openable and closable, the printed board on which the electronic display parts are attached can be attached and detached from the front side of the base body, and the serviceability is improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an air conditioner indoor unit showing an embodiment of the first invention.

FIG. 2 is a vertical cross-sectional view of a drain pan, which is a main part of an indoor unit, and a nose and a display part of the embodiment.

FIG. 3 is a perspective view of a drain pan, which is a main part of an indoor unit, and a nose and a display unit, according to the embodiment.

FIG. 4 is a perspective view of a drain pan, which is a main part of an indoor unit, and a nose and a display part of another embodiment.

FIG. 5A is a vertical cross-sectional view of a drain pan, which is a main part of an indoor unit, a nose, and a display unit in a conventional example. (B)
Is a conventional example of a drain pan that is a main part of an indoor unit,
The perspective view of a nose and a display part.

[Explanation of symbols]

20 ... Unit body, 26 ... Indoor heat exchanger, 27 ... Indoor blower, 30 ... (Front) drain pan, 34 ... Blower guide path, 33 ... Nose, 33b ... Standing piece part, 33c ... Claw part, 37 ... Display part , 41 ... Electronic display parts, 40 ... Printed circuit board, 42 ... Base body, 43 ... Cover.

Claims (5)

[Claims] 1. A unit main body having an inlet and an outlet, an indoor heat exchanger housed in the unit main body and arranged to face the inlet, and air to be conditioned in the air from the inlet. A blower that sucks into the unit body and guides it to the indoor heat exchanger, where it exchanges heat and then blows air from the outlet to the air-conditioned room, and a drain pan that is arranged below the indoor heat exchanger and receives drain water. And a blower guide path formed between the blower and the blowout port for guiding the air that has exchanged heat with the indoor heat exchanger, and configured as a part of the blower guide path, and from the lower surface of the drain pan to the blower side. The nose is extended, the nose is provided with a rising piece portion that is bent and formed at the approaching position of the blower, and is provided on an upper end edge of the rising piece portion and rotates inside the upper end edge of the drain pan. Indoor unit of an air conditioner is characterized in that a free claw portion. 2. The indoor unit for an air conditioner according to claim 1, wherein the claw portion of the nose is provided over the entire lengthwise direction of the nose rising piece portion. 3. The claws of the nose are provided at a plurality of positions along the longitudinal direction of the nose at predetermined intervals, and ribs are provided integrally between these claws so as to abut against the upper edge of the drain pan. An indoor unit for an air conditioner according to claim 1, wherein: 4. A unit main body having an inlet and an outlet, an indoor heat exchanger housed in the unit main body and arranged to face the inlet, and air to be conditioned in the air from the inlet. A blower that sucks into the unit body and guides it to the indoor heat exchanger, where it exchanges heat and then blows air from the outlet to the air-conditioned room, and a drain pan that is arranged below the indoor heat exchanger and receives drain water. And a display section arranged in a space between the drain pan and the unit main body on the front side thereof. The display section holds a board on which an electronic display component is mounted and holds an opening on the front side. An indoor unit for an air conditioner, comprising: a base body including: and a cover that covers a front opening of the base body. 5. The indoor unit for an air conditioner according to claim 4, wherein the cover is pivotally attached to the base body via a hinge portion so that the front opening can be opened and closed.