JP7224556B2 - Wall-mounted air conditioner indoor unit - Google Patents

Description

The present disclosure relates to a wall-mounted air conditioner indoor unit.

Inside a wall-mounted air conditioner indoor unit for home use, mold is likely to grow in the part where the heat exchanger is installed or the part of the air duct. Therefore, there is an increasing demand for washing the inside of the wall-mounted air conditioner indoor unit with water or the like.
However, the interior of the wall-mounted air conditioner indoor unit is equipped with electrical components such as a control board, which may lead to malfunctions when wet with water or the like.
Therefore, when washing the inside of the wall-mounted air conditioner indoor unit with water or the like, it is necessary to prevent the electrical components from getting wet with water or the like.
For example, in Patent Document 1, when cleaning the inside of the housing of an indoor unit of an air conditioner using a cleaning agent, the cleaning agent enters the electrical component room through a vent provided in the front surface of the electrical component room. It is disclosed to provide an electrical item cover to prevent it from adhering to the electrical item itself. This ventilation port is provided for cooling the interior of the electrical component room, or for detecting the indoor air temperature with a thermistor housed in the electrical component compartment.

JP-A-2002-61875

Electrical parts generate heat, so when washing the interior of the wall-mounted air conditioner indoor unit with water, not only should the wall-mounted air conditioner indoor unit not get wet, The heat generated must be exhausted to the outside of the wall-mounted air conditioner indoor unit.
In the prior art disclosed in Patent Document 1, a ventilation hole is provided, but since the ventilation hole is provided in front of the electrical equipment room, if the ventilation hole is used as a heat exhaust port, , there is a problem that the intrusion of the cleaning agent when cleaning the inside of the housing of the indoor unit cannot be completely prevented.

The present disclosure has been made to solve the above-described problems. To provide a wall-mounted air conditioner indoor unit in which heat is exhausted from the inside.

A wall-mounted air conditioner indoor unit according to the present disclosure is a wall-mounted air conditioner indoor unit that includes a main body chassis that is attached to a wall surface in a room, a main body case that has a front cover that is detachably covered on the main body chassis, and an interior of the main body case. , the electrical related parts provided on the front part of the main chassis, the waterproof electrical product box that covers the electrical related parts inside the main body case, and the main body chassis on the back side of the electrical related parts when viewed from the front of the main chassis and a heat exhaust port provided in the

According to the wall-mounted air conditioner indoor unit according to the present disclosure, when the interior is washed with water, etc., the electrical components are prevented from getting wet with water, etc., and the heat generated from the electrical components is exhausted from the inside. can be made

1 is a diagram illustrating a configuration example of a wall-mounted air conditioner indoor unit according to Embodiment 1; FIG. FIG. 2A is a diagram for explaining the internal structure of the main body case in the indoor unit according to Embodiment 1, and FIG. 2A is a diagram showing the indoor unit shown in FIG. 2B is a diagram showing a state in which the waterproof electrical component box is further removed from the state in FIG. 2A. FIG. 2 is a perspective view of the indoor unit for explaining an image in which the waterproof electrical equipment box covers electrical components in Embodiment 1; FIG. 4 is a diagram for explaining an image of an example of a method of mounting the waterproof electrical component box to the front portion of the main body chassis in Embodiment 1; FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2A; An example of a conventional indoor unit in which electrical components are distributed and provided inside the main body case, and an indoor unit according to Embodiment 1 in which electrical components are provided in one place inside the main body case. FIG. 6A is a diagram for explaining a result of comparing one example, and FIG. 6A is a diagram showing the inside of the main body case of an indoor unit in which electrical components are distributed and provided inside the main body case; 6B is a diagram showing the inside of the body case of the indoor unit according to Embodiment 1. FIG.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.
Embodiment 1.
In Embodiment 1, the wall-mounted air conditioner indoor unit is assumed to be a general wall-mounted air conditioner indoor unit used in general households.

FIG. 1 is a diagram illustrating a configuration example of a wall-mounted air conditioner indoor unit 1 according to Embodiment 1. FIG. In the following description, the wall-mounted air conditioner indoor unit 1 is also simply referred to as "indoor unit".
FIG. 1 is a perspective view of an indoor unit installed on an indoor wall surface. Hereinafter, the state in which the indoor unit is installed on the wall surface is referred to as the "installed state".
As shown in FIG. 1, the indoor unit includes a body case 100. As shown in FIG. The body case 100 has a body chassis 101 and a front cover 102 detachably covering the body chassis 101 . In addition, in FIG. 1, the front cover 102 is put on the main body chassis 101 .
The main body chassis 101 has a box-like shape, and includes a front portion 101a (see FIG. 5 described later), a top portion 101b (see FIG. 5 described later), a rear portion 101c (see FIG. 5 described later), and a bottom portion 101d (see FIG. 5 described later). (See FIG. 5, which will be described later).
The front surface portion 101a of the main body chassis 101 is one surface of the main body chassis 101 that is the front surface when the indoor unit is installed. The rear portion 101c of the main body chassis 101 is one surface of the main body chassis 101 that faces the front portion 101a. When installing the indoor unit, for example, the rear surface portion 101c is attached to the wall surface via an installation plate (not shown). The top surface portion 101b of the main chassis 101 is the top surface of the main chassis 101 when the indoor unit is installed. The bottom surface portion 101d of the main chassis 101 is one surface of the main chassis 101 that faces the top surface portion 101b.

The front cover 102 is provided with a grill component as an air suction portion. The grille component forms the appearance of the front cover 102 while ensuring ventilation.
An air suction port (not shown) is provided in the upper portion of the front cover 102 .
Further, the front cover 102 is formed so that the lower portion of the main body case 100 is opened while being covered with the main body chassis 101 .
An air outlet (not shown) is provided in an opening formed in the lower portion of the main body case 100 . The direction and size of the opening of the air outlet are regulated by the vane flap 103 . In addition, in FIG. 1 , the air outlet is closed by the vane flap 103 .
A display unit 104 is provided at the right end of the air outlet to display the operating state of the indoor unit, for example, using an LED.

FIG. 2 is a diagram for explaining the internal structure of the main body case 100 in the indoor unit according to Embodiment 1. FIG. 2A shows the indoor unit shown in FIG. 1 with the front cover 102 removed. FIG. 2B is a diagram showing a state in which the waterproof electrical component box 10 is further removed from the state in FIG. 2A.

Inside the body case 100, an air passage is formed from the air inlet to the air outlet. A heat exchanger 105 for heat-exchanging indoor air, a blower fan (not shown), a vane flap 103, and the like are provided in the air passage. The vane flap 103 is provided with left/right wind direction variable vanes (not shown) and up/down wind direction variable vanes (not shown).
The heat exchanger 105 or air ducts are susceptible to mold. In addition, it becomes dirty with dust in the air.
Therefore, parts such as the heat exchanger 105 or the air duct, which are likely to become moldy or dirty, can be washed with water or the like. When washing the heat exchanger 105 or the air duct with water or the like, the washing company or the like removes the front cover 102 as shown in FIG.

Further, inside the body case 100, a fan motor 203 for driving the blower fan, a vane motor 204 for driving the horizontal and vertical wind direction variable vanes, a control board 201a, a display board 202a, and the like are provided. It is The control board 201a supplies electricity for driving the fan motor 203 or the vane motor 204, for example. For example, LEDs are provided on the display substrate 202a, and the display substrate 202a supplies electricity for lighting the LEDs.

As shown in FIG. 2B, the control board 201a is housed in a control board case 201 made of metal. The display substrate 202 a is housed in the display substrate case 202 .
The control board 201a generates heat. A control board case 201 made of metal is required for flameproofing of the control board 201a. The design standard stipulates that the control board must be covered with a metal case.

If the control board 201a, the control board case 201 that houses the control board 201a, the display board 202a, the display board case 202 that houses the display board 202a, the fan motor 203, and the vane motor 204 get wet with water or the like, they will fail. It is an electrical component 20 that may cause damage.

As shown in FIG. 2A , a water-resistant electrical component box 10 that covers electrical components 20 is detachably provided inside a main body case 100 . Here, the electrical components 20 are a fan motor 203, a vane motor 204, a control board 201a, a control board case 201, a display board 202a, and a display board case 202. FIG. Note that FIG. 2A shows a state in which the waterproof electrical equipment box 10 is attached to the main body chassis 101 .
The waterproof electrical equipment box 10 is made of resin, for example. It should be noted that this is merely an example, and the water-resistant electrical equipment box 10 may be made of a water-resistant member.

Here, FIG. 3 is a perspective view of the indoor unit for explaining an image in which the waterproof electrical product box 10 covers the electrical component 20 in the first embodiment.
For simplicity of explanation, FIG. 3 shows only the waterproof electrical equipment box 10, the fan motor 203, the vane motor 204, the control board case 201, the display board case 202, and part of the main body chassis 101. FIG.

The water-resistant electrical component box 10 is attached to the front surface portion 101 a of the main chassis 101 from the front surface portion 101 a side of the main chassis 101 so as to cover all the electrical components 20 .

4A and 4B are diagrams for explaining an image of an example of a method for mounting the waterproof electrical component box 10 on the front surface portion 101a of the main body chassis 101 in the first embodiment.
For ease of explanation, FIG. 4 shows only the water-resistant electrical box 10 and the front portion 101a of the main body chassis 101 where the water-resistant electrical box 10 is mounted.

As shown in FIG. 4, a front surface portion 101a of a main body chassis 101 to which the waterproof electrical equipment box 10 is mounted has a recess 101e. Although not shown in FIG. 4, a control board 201a and a display board 202a are housed in a control board case 201 and a display board case 202, respectively, on the bottom surface of the recess 101e (see FIG. 3). reference).
Although not shown in FIG. 4, the recess 101e is provided with a fan motor 203 and a vane motor 204 (see FIG. 3).
The waterproof electrical equipment box 10 has a box-like shape with one open surface on the side mounted on the front surface portion 101 a of the main body chassis 101 .

For example, as shown in FIG. 4, the waterproof electrical equipment box 10 is attached to the front surface portion 101a of the main body chassis 101 by a snap-fit mechanism.
When the water resistant electrical component box 10 is attached to the front portion 101 a of the main body chassis 101 , the two protrusions 10 a (see 402 in FIG. 4) provided on the water resistant electrical component box 10 are aligned with the two holes provided on the main body chassis 101 . It hooks onto the portion 10b by means of a snap fit, respectively. As a result, the state in which the waterproof electrical component box 10 is attached to the front portion 101a of the main body chassis 101 is maintained. Further, in a state where the water resistant electrical component box 10 is attached to the front face portion 101a of the main body chassis 101, the portion covered with the water resistant electrical component box 10, in other words, the concave portion 101e of the front face portion 101a of the main body chassis 101 is It is sealed by a waterproof electrical box 10 . In addition, the shape of the projection part 10a and the hole part 10b is not limited to the shape shown in FIG.

For example, a trader removes the front cover 102 and installs the water-resistant electrical box 10 as shown in FIG. 2A. parts, etc., are washed with water using a high-pressure washer or the like.
The interior of the indoor unit is equipped with electrical components 20. Since all of the electrical components 20 are entirely covered and sealed by the waterproof electrical component box 10, the electrical components 20 are It does not get wet with water etc.

When removing the water resistant electrical component box 10 from the front surface portion 101a of the main body chassis 101, for example, the contractor pushes the protrusion 10a and pulls out the water resistant electrical component box 10 from the front surface portion 101a of the main body chassis 101 to achieve a snap fit. By removing the protruding portion 10a that has been caught, the water-resistant electrical equipment box 10 can be removed from the front portion 101a of the main body chassis 101 by removing it from the hole portion 10b.

Here, as shown in FIG. 4, projections 10a are provided on the left and right surfaces of the waterproof electrical equipment box 10, respectively. 101 is hooked in the hole 10b provided at a position facing the projection 10a of the front face 101a, but this is only an example. For example, the protrusions 10 a may be provided on the upper and lower surfaces of the waterproof electrical equipment box 10 .
Also, here, two protrusions 10a and two holes 10b are provided, but this is merely an example. For example, three or more combinations of protrusions 10a and holes 10b may be provided.

As described above, the waterproof electrical equipment box 10 is detachably provided on the front surface portion 101 a of the main body chassis 101 inside the main body case 100 .
By making the water-resistant electrical equipment box 10 detachable, for example, installation work of the indoor unit by a trader or the like can be simplified. Specifically, for example, when a contractor or the like installs an indoor unit, he/she must connect a wire drawn from a power supply in the house to the electrical component 20 provided inside the indoor unit. A trader or the like removes the front cover 102 and connects the electric wire to the electrical component 20 . At this time, if the waterproof electrical component box 10 is attached, the work of connecting the electric wire and the electrical component 20 becomes difficult. By making the water-resistant electrical box 10 detachable, the contractor can remove the water-resistant electrical box 10 when installing the indoor unit, and can easily connect wires to the electrical components 20. can.

Also, the waterproof electrical equipment box 10 does not affect the operation of the indoor unit. In other words, the indoor unit can be normally operated whether or not the waterproof electrical equipment box 10 is attached. Therefore, for example, if there is a market demand for cost reduction, the indoor unit does not include the waterproof electrical box 10 on the premise that the interior of the indoor unit is not compatible with washing with water or the like. It can also be used as a product.

FIG. 5 is a cross-sectional view taken along line AA of FIG. 2A. 5 is a cross-sectional view taken along the line AA in FIG. 2A as viewed from the side on which the electrical component 20 is provided.
As shown in FIG. 5, when viewed from the front of the main body chassis 101, in other words, when viewed from the direction indicated by the arrow 501 in FIG. be done.
More specifically, in the main body chassis 101, a heat exhaust port 1011a and a heat exhaust port 1011b are provided in the front surface portion 101a and the top surface portion 101b of the main chassis 101 covered with the waterproof electrical equipment box 10, respectively. .
The heat exhaust port 1011 a is provided at a position outside the control board case 201 and the display board case 202 on the front portion 101 a of the main body chassis 101 covered with the waterproof electrical equipment box 10 .

As described above, the control board 201a generates heat. The heat generated from the control board 201a is sent out of the control board case 201 through a gap or the like in the control board case 201, passes through the heat exhaust port 1011a and the inside of the main body chassis 101, and is discharged from the indoor unit through the heat exhaust port 1011b. (see 502 in FIG. 5). As a result, the indoor unit can exhaust the heat generated from the electrical component 20, more specifically, the control board 201a.

In addition, by providing the heat exhaust port 1011 in the main body chassis 101 on the rear side of the electrical components 20 when viewed from the front of the main body chassis 101, a contractor or the like can use the heat exchanger 105 or the air blower inside the indoor unit. Even if the path portion or the like is washed with water using, for example, a high-pressure washer, water or the like does not enter the interior of the indoor unit through the heat exhaust port 1011 . As a result, the electrical component 20 does not get wet with water or the like.

Further, as shown in FIG. 5 , the body chassis 101 has a protrusion 1012 protruding into the internal space of the body chassis 101 near the heat exhaust port 1011 of the body chassis 101 .
The body chassis 101 has the protrusions 1012, so that it is possible to prevent water or the like from entering from the outside of the indoor unit along the wall surface due to surface tension.
Here, as shown in FIG. 5, three convex portions 1012 are formed, but the number of convex portions 1012 is not limited to three.
Also, in Embodiment 1, the main body chassis 101 has the convex portion 1012, but this is only an example. The main body chassis 101 does not necessarily have the protrusion 1012 .

In Embodiment 1 described above, the electrical components 20 are collectively provided in one place inside the main body case 100 as shown in FIG. 2B.

Here, FIG. 6 shows an example of a conventional indoor unit in which the electrical components are dispersedly provided inside the main body case, and an example of a conventional indoor unit in which the electrical components 20 are collectively provided in the main body case 100. FIG. 5 is a diagram for explaining a result of comparing examples of indoor units according to Embodiment 1;
6A is a diagram showing the inside of the main body case of the indoor unit in which electrical components are distributed and provided inside the main body case, and FIG. 6B is a main body case 100 of the indoor unit according to Embodiment 1. FIG. It is a figure which shows the inside of.
Note that FIGS. 6A and 6B are examples of diagrams showing the inside of the main body case of the indoor unit with the front cover removed in the installed state of the indoor unit, viewed from the front of the indoor unit.

Conventionally, for example, as shown in FIG. 6A, a vane motor 601 for driving the laterally variable vanes and a vane motor 602 for driving the upwardly and downwardly variable vanes are separated at the ends in the width direction of the main body case. Indoor units are known.
On the other hand, as shown in FIG. 6B, the indoor unit according to Embodiment 1 includes a motor for driving the laterally variable vanes and a motor for driving the vertically variable vanes inside the main body case 100. They are integrated into one vane motor 204 . In the indoor unit, the vane motor 204 is collectively provided in one place inside the main body case 100 together with the other electrical components 20 . Here, the electrical components 20 are collectively provided at the right end of the interior of the main body case 100 when the indoor unit is viewed from the front surface 101a of the main body case 100 .
That is, as shown in FIG. 6B, in the indoor unit, there are parts required to be washed with water, such as the heat exchanger 105 and ventilation passages (hereinafter referred to as "parts requiring washing") inside the main body case 100. A "water-washable area" to be provided is distinguished from a "water-required area" to be provided with electrical components 20 that may lead to failure if wet with water, etc., and the water-required areas are arranged in one place. there is

Since the water-resistant area is arranged in one place, the indoor unit may be provided with one water-resistant electrical equipment box 10 .

Further, the indoor unit can reduce the width of the drains 603a, 603b in comparison with the conventional indoor unit in which the vane motors 601, 602 are provided separately at a plurality of locations. As a result, the indoor unit can ensure front accessibility for power connection work when the indoor unit is installed by a trader or the like. Moreover, the indoor unit can eliminate the harness 604 for connecting the plurality of vane motors 601 and 602, which is required in the conventional indoor unit.

In Embodiment 1, the indoor unit drives the left/right wind direction variable vanes and the up/down wind direction variable vanes with one vane motor 204, but this is only an example. For example, the indoor unit may include a motor for driving the horizontal airflow direction variable vanes and a motor for driving the vertical airflow direction variable vanes. However, in the indoor unit, a motor for driving the left/right wind direction variable vanes and a motor for driving the up/down wind direction variable vanes are collectively provided in one waterproof area inside the main body case 100. - 特許庁

In the first embodiment described above, one water-resistant area is provided, but it is not essential to have one water-resistant area. However, for example, when a plurality of water-resistant areas are provided in an indoor unit, the indoor unit is provided with water-resistant electrical equipment boxes 10 according to the number of water-resistant areas.

In the first embodiment described above, the indoor unit is provided with the waterproof electrical component box 10 separately from the control board case 201 and the display board case 202 in the main body case 100 of the indoor unit. It is also possible for the product box 10 to serve as both the control board case 201 and the display board case 202 . However, in that case, the water-resistant electrical equipment box 10 must be made of metal and be water-resistant.
A metal case is generally formed by cutting and bending a flat plate. Therefore, it is difficult to form a metal case without creating a gap. In order to form a metal case without creating a gap, a mold or fixtures for forming the metal case are required.
On the other hand, the water-resistant electrical product box 10 made of resin can be easily formed by molding.
As described in the first embodiment above, the water-resistant electrical equipment box 10 is made of a resin member different from the control board case 201 and the display board case 202. Although the number of parts increases, the Cost and labor for forming the waterproof electrical equipment box 10 can be suppressed.

As described above, according to Embodiment 1, the wall-mounted air conditioner indoor unit 1 includes the main body chassis 101 attached to the wall surface in the room and the main body case 100 having the front cover 102 detachably covering the main body chassis 101. , inside the body case 100, the electrical components 20 provided on the front part 101a of the body chassis 101; A heat exhaust port 1011 provided in the main body chassis 101 on the back side rather than the electrical component 20 when viewed from the front is provided. Therefore, when the interior of the wall-mounted air conditioner indoor unit 1 is washed with water or the like, the electrical components 20 are prevented from getting wet with water or the like, and the heat generated from the electrical components 20 is exhausted from the inside. can be

In the present disclosure, any component of the embodiment can be modified, or any component of the embodiment can be omitted.

The wall-mounted air conditioner indoor unit according to the present disclosure prevents the electrical components from getting wet when the interior is washed with water, etc., and the heat generated from the electrical components is exhausted from the inside. Since it is configured, it can be applied to a wall-mounted air conditioner indoor unit that can be washed with water or the like.

1 wall-mounted air conditioner indoor unit, 10 waterproof electrical item box, 10a protrusion, 10b hole, 100 body case, 101 body chassis, 101a front surface, 101b top surface, 101c rear surface, 101d bottom surface, 101e recess, 102 front surface A cover, 103 vane flap, 104 display unit, 20 electrical components, 201 control board case, 202 display board case, 203 fan motor, 204, 601, 602 vane motor, 1011, 1011a, 1011b heat exhaust port, 1012 projection.

Claims (4)

A wall-mounted air conditioner indoor unit,
a body case having a body chassis attached to an indoor wall surface and a front cover detachably covering the body chassis;
electrical components provided on the front surface of the main body chassis inside the main body case;
a waterproof electrical box that covers the electrical components in the body case;
A wall-mounted air conditioner indoor unit provided with a heat exhaust port provided in the main body chassis on the back side of the electrical components when viewed from the front of the main body chassis. the body chassis has a box shape,
2. The wall-mounted air conditioner according to claim 1, wherein the heat exhaust port is provided in a front surface portion of the main body chassis where the water-resistant electrical box is covered, and in a top surface portion of the main body chassis. indoor unit. The water-resistant electrical box includes:
3. The wall-mounted air conditioner indoor unit according to claim 1, wherein the wall-mounted air conditioner indoor unit is detachably provided on the front portion of the main body chassis inside the main body case. 2. The wall-mounted air conditioner indoor unit according to claim 1, wherein the electrical components are collectively provided in one place inside the main body case.

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