JP3258901B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an air conditioner for performing indoor air conditioning. More specifically, the present invention relates to an air conditioner in which a blower frame formed in a duct shape houses a fan for blowing air.

[0002]

2. Description of the Related Art In an indoor unit of an air conditioner (hereinafter, referred to as an "air conditioner") for performing indoor air conditioning, indoor air is sucked by rotation of a fan such as a cross flow fan. The air sucked into the indoor unit passes through the heat exchanger and is blown out toward the room as air-conditioned air. The fan provided in the indoor unit of such an air conditioner is provided close to the heat exchanger, and is long according to the length of the heat exchanger. The rotation axis of the fan is mounted substantially parallel to the heat exchanger.

[0003] In an indoor unit of an air conditioner, indoor air is sucked from a suction port provided in a grill provided on a front surface of a main body of the outdoor unit, and is blown out from a blowing port provided adjacent to the suction port. It has become. At this time, in order to make the indoor unit compact, the air is inverted in a substantially U-shape inside the indoor unit. For this purpose, the indoor unit is provided with a heat exchanger that is arranged obliquely and a suction frame that is curved along the flow of air on the suction side of the heat exchanger.

[0004] In the indoor unit, the outlet side of the fan casing is formed in a duct shape in order to efficiently guide the air passing through the heat exchanger toward the outlet. The fan is arranged in the outlet side of the duct-shaped fan casing.

There are two types of air conditioners: an exposed type, such as a wall-mounted type, which is mounted on a wall by exposing it, and an embedded type, which conceals an indoor unit behind a ceiling.

There is a so-called ceiling cassette type air conditioner as an embedded type air conditioner. For example, in this ceiling cassette type air conditioner, an indoor unit has a structure in which an indoor unit is housed in a substantially box-shaped casing. ing.

As described above, in the embedded type air conditioner, the indoor unit inside the casing can be exposed by removing the grill on the surface, but the air conditioner mainly condenses on the heat exchanger provided in the indoor unit. The drain pan that collects the collected moisture, the suction frame and the blowout side of the fan casing are only exposed, the fan is housed in the blowout side of the duct-shaped fan casing, and the heat exchanger is When the fan is arranged at an angle, the fan may be located at a location hidden by the heat exchanger on the blowout side of the fan casing.

On the other hand, when it is necessary to replace the fan due to a failure of the fan or when performing maintenance such as cleaning of the fan, it is most preferable to remove only the fan from the indoor unit in terms of workability.

However, when the fan of the indoor unit is housed in the outlet duct and the mounting position of the fan is in the shadow of the heat exchanger, the fan is moved after the heat exchanger is shifted. Need to be disassembled,
This is a complicated operation. In addition, the blowout side of the fan casing is often formed integrally with an intermediate portion along the axial direction of the fan.In such a case, after removing the blowout side of the fan casing, from the blowout side of the fan casing You have to pull out the fan. Further, when the heat exchanger needs to be moved or the indoor unit needs to be removed, the work of attaching and detaching the refrigerant pipe and the drain pipe occurs, and large-scale work may be required for maintenance.

[0010] Further, in an indoor unit of an embedded type air conditioner such as a ceiling cassette type, since the indoor unit is housed in a substantially box-shaped casing, the blowout side of the fan casing is located between the heat exchanger and the casing. Is sandwiched between
It is more difficult to remove the blowout side of the fan casing.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and an object of the present invention is to propose an air conditioner which facilitates the attachment / detachment of a fan or the like of an indoor unit to improve maintainability. And

[0012]

In order to solve the above problems, the present invention provides a suction side of a fan casing which is provided upstream of a heat exchanger and guides room air to the heat exchanger.
A fan that rotates by the driving force of the driving means and sends out the air that has passed through the heat exchanger while sucking room air, and a fan that is provided downstream of the heat exchanger and accommodates the fan and is rotatably supported. And a blow-out side of a duct-shaped fan casing for guiding the air delivered by the fan toward the room, and the indoor unit includes a box-shaped casing disposed behind the ceiling of the room. An air conditioner housed through an opening, wherein the blowout side of the fan casing is provided on the heat exchanger side frame body with the axis of the fan as a boundary, and is attached to and detached from the frame body provided on the fan delivery direction side. And a blow-off port which is mounted so as to be able to support the fan by removing the blow-out port from the indoor opening of the box-shaped casing. Characterized in that to receive partially open the member.

According to the present invention, the outlet side of the fan casing supporting the fan is divided into the frame body and the outlet. The boundary at the time of division is the rotation center which is the rotation axis of the fan. Therefore, the support of the fan is released only by dividing the outlet side of the fan casing, and the fan can be removed.

Further, by removing the outlet from the indoor opening of the box-shaped casing, the bearing member supporting the fan can be partially opened, so that the outlet from the indoor unit housed behind the ceiling is provided. The parts can be easily removed and the fan can be easily removed.

[0015]

[0016]

[0017]

[0018]

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 show an indoor unit 12 of an air conditioner (hereinafter, referred to as “air conditioner 10”) applied to the present embodiment.

The indoor unit 12 of the air conditioner 10 accommodates an indoor unit 16 in a casing 14, and the indoor unit 12 is mounted by circulating a refrigerant between the indoor unit 16 and an outdoor unit (not shown). Room 18
Perform air conditioning. In the present embodiment, the indoor unit 1
2 is installed on the ceiling floor 20 and the room 18 is
A so-called ceiling cassette type air conditioner 10 which is concealed from the air conditioner and mounted is used as an example.

The indoor unit 12 of the air conditioner 10 includes a ceiling plate 22.
An opening 24 corresponding to the casing 14 is formed in the casing 14, and the opening 24 is attached to the casing 14 and covered by a grill 26. The air conditioner 10 has a general configuration in which the air in the room 18 is sucked into the indoor unit 16 through the grill 26 and the air conditioned by the indoor unit 16 is blown out from the grill 26 into the room 18. ,
Detailed description is omitted.

In this embodiment, the casing 14
As an example, the ceiling plate 22 is formed in a long rectangular shape that is long in one direction.
The direction will be described as the width direction, and the direction of the arrow H will be described as an upper side in the vertical direction with respect to the ceiling plate 22. Also, FIG. 1 shows that the indoor unit 12 installed on the ceiling
FIG. 2 is a schematic plan view seen through FIG.
3 is a schematic configuration diagram viewed along the longitudinal direction, and the illustration of the grill 26 is omitted in FIG.

As shown in FIGS. 1 and 2, the casing 1
4 is formed in a substantially box-like shape whose surface facing the ceiling plate 22 is open, and the indoor unit 16 housed in the casing 14 includes a heat exchanger 28 and a cross flow fan 30. . The heat exchanger 28 includes the casing 1
4 is arranged along the longitudinal direction of the casing 14 at the center in the width direction. A drain pan 38 is attached to the casing 14 so as to oppose the lower end of the heat exchanger 28. The drain pan 38 collects water droplets attached to the heat exchanger 28 due to dew condensation or the like.

As shown in FIG. 1, the drain pan 38 is bent substantially L-shaped from below the heat exchanger 28 and extends along the width direction of the casing 14. As shown in FIG. 2, a drain pump unit 40 is mounted above the distal end of the extended drain pan 38. A discharge pipe 42 is connected to an upper part of the drain pump unit 40. The distal end of the discharge pipe 42 penetrates the casing 14 and is connected to the drain pipe 72. In the air conditioner 10, when the drain pump unit 40 operates, the water accumulated in the drain pan 38 is pumped up, sent to the drain pipe 72 and discharged.

As shown in FIG. 1, the distal ends of the refrigerant pipes 56 and 58 extending from the heat exchanger 28 penetrate the casing 14 similarly to the discharge pipe 42, and the flare nut 68 , 70 by means of refrigerant pipes 60, 6
The two tips are tightly fastened. These refrigerant pipes 6
The other ends of the refrigerant pipes 0 and 62 are connected to an outdoor unit.
The circulation of the refrigerant is performed between the heat exchanger 28 of the indoor unit 12 and the outdoor unit via 0 and 62. In a gap between the drain pan 38 and the casing 14, a control box 52 that accommodates electrical components such as a control board of the indoor unit 16 is disposed. On the other hand, as shown in FIGS. 1 and 2, a plurality of brackets 44 are attached to the outer peripheral surface of the casing 14. The lower ends of the suspension bolts 46 fixed directly or indirectly to a skeleton (not shown) are inserted into these brackets 44, and are fastened and connected by a washer nut 48 or the like. Thereby, the air conditioner 10
The indoor unit 12 is mounted such that the casing 14 is hung inside the ceiling space 20.

As shown in FIG. 2, the heat exchanger 28 provided in the casing 14 is inclined such that the upper end thereof is directed downward, and the inner surface of the casing 14 is formed by gently curving the center of a flat plate. A suction side 32 of a fan casing having a shape extending from one end of an opening peripheral edge of the casing 14 to an upper end of the heat exchanger 28 is provided. When the air in the room 18 is sucked from a substantially central portion of the opening of the casing 14, the heat exchanger 2 is sucked by the suction side 32 of the fan casing.
Guided to 8.

As shown in FIGS. 1 and 2, the cross flow fan 30 is provided adjacent to the heat exchanger 28 on the side opposite to the suction side 32 of the fan casing, and the scroll fan 30 rotates. As a result, air is sucked from the room 18 into the casing 14. The air sucked into the casing 14 and passed through the heat exchanger 28 is
The air is sent out toward the room 18 by the cross flow fan 30.

The cross flow fan 30 is housed in a blow-out side 34 of a fan casing formed in a duct shape from the heat exchanger 28 to the grill 26.

As shown in FIG. 2 and FIG. 2, a fan accommodating portion 50 for accommodating the cross flow fan 30 is provided on the outlet side 34 of the fan casing. The fan accommodating portion 50 has flange portions 100 and 102 opposed to both ends of the cross flow fan 30 in the axial direction, and has an upper portion formed in an arc shape in accordance with the outer shape of the cross flow fan 30. .

One flange 100 (specifically, FIG.
(Left side in FIG. 4), a bearing housing portion 54 having a cylindrical concave portion is provided (see FIG. 4A). FIG.
As shown in (A), a bearing member 64 is housed in the bearing housing portion 54. As shown in FIG. 6, the bearing member 64 has a bearing 74 inserted at the center of a base 66 formed in a substantially cylindrical shape by an elastic member such as rubber.

As shown in FIGS. 3B and 4A,
One rotation shaft 76A of the cross flow fan 30 is inserted into the bearing 74, and by inserting the bearing member 64 into the bearing accommodating portion 54 of the blowout side 34 of the fan casing, the cross shaft 76A is inserted through the rotation shaft 76A. One end of the flow fan 30 in the axial direction is supported.

As shown in FIG. 2, the other rotating shaft 76B of the cross flow fan 30 has a fan housing 50
Corresponds to the other flange portion 102, and the opening 51 formed in the flange portion 102 corresponds to the rotation shaft 76 </ b> B.
Is inserted. The drive shaft of the fan motor 36 is connected to the rotation shaft 76B of the cross flow fan 30 so as to be integrally rotatable. That is, as shown in FIG. 4 (B), an engagement pin 78 orthogonal to the axial direction is projected from the rotation shaft 76B of the cross flow fan 30, and the engagement pin 78 is The drive shaft engages and can rotate integrally. In addition, the cross flow fan 30
The connection between the fan motor 36 and the fan motor 36 is easily released by relatively separating the fan motor 36 along the axial direction.

The flange 10 of the fan housing 50
Numerals 0 and 102 regulate the movement of the cross flow fan 30 along the axial direction. By connecting the drive shaft of the fan motor 36 to the rotation shaft 76B, the cross flow fan 30 Is positioned.

As shown in FIG. 1, the fan motor 36
It is attached to the casing 14 separately from the cross flow fan 30 via the motor retainer 80. Therefore, if the motor retainer 80 is removed, the connection between the fan motor 36 and the cross flow fan 30 can be released.

On the other hand, as shown in FIGS. 2, 4A and 5, the blowout side 34 of the fan casing is connected to the heat exchanger 28.
A frame body 82 on the side and an outlet frame 84 on the downstream side in the outlet direction. The frame main body 82 is disposed so as to extend from the heat exchanger 28 to the upper portion of the fan housing 50, and is fixed to the heat exchanger 28 and the casing 14. The frame body 82 receives the air that has passed from the upper part to the middle part of the heat exchanger 28,
Of the cross flow fan 30 is formed.

The outlet frame 84 is provided in the fan housing 5
It is arranged from the lower part of 0 to the open surface of the casing 14, and is detachably connected to the frame main body 82, the heat exchanger 28, the casing 14, and the like by screws or the like, and is attached.

As shown in FIG. 3C, the outlet frame 84 has a substantially U-shaped planar shape by a guide plate 86 and a pair of legs 88A and 88B arranged on the side opposite to the heat exchanger 28. The ends of the pair of legs 88A, 88B are provided at both ends in the longitudinal direction of the heat exchanger 28, respectively. For this reason, the outlet frame 84 forms a duct with the heat exchanger 28 from the vicinity of the cross flow fan 30 toward the grill 26, and the heat exchanger 28
The air that has passed through the lower part and the air that is sent out by the cross flow fan 30 are guided toward the room 18 along the guide plate 86.

The flange 10 of the fan housing 50
Reference numerals 0 and 102 denote divided portions 1 on the frame body 82 side, respectively.
00A and 102A, and divided portions 100B and 102B on the side of the outlet frame 84. Accordingly, the bearing accommodating portion 54 formed on the flange portion 100 is also divided.

The divisions 100B and 102B divided on the side of the outlet frame 84 are
Flange 10 in a substantially sector shape with an angle θ about the axis of
0 and 102 are notched (see FIG. 4B). For this reason, by removing the split portion 100B of the flange portion 100 from the split portion 100A, the bearing receiving portion 54 is partially opened, but the base portion 6 of the bearing member 64 is opened.
The angle θ is set such that the opening width along the diametric direction of the base 6 is shorter than the diameter of the base 66. Thus, the bearing member 64 does not separate from the bearing accommodating portion 50 only by removing the outlet frame 84. That is, the separation of the cross flow fan 30 when the outlet frame 84 is removed is prevented.

By elastically deforming the base 66 of the bearing member 64, the rotating shaft 76 A of the cross flow fan 30 is moved from the opening formed in the bearing housing 50 to the bearing member 6.
4 so that it can be removed integrally. In addition, this allows the cross flow fan 30 to move in the axial direction, so that the connection between the rotation shaft 76B of the cross flow fan and the fan motor 36 is released, and the cross flow fan 30 is removed from the fan housing 50. Can be.

It is needless to say that such an angle θ is not more than 180 degrees, and is preferably small so that the base 66 forms an opening having a size that does not easily come out without elastic deformation. Further, it is preferable that the base 66 be kept within a range in which the base 66 can be elastically deformed. To do this, the base 66
May be set according to the elastic characteristic of the base 66, and the material of the base 66 may be selected so as to obtain an elastic force corresponding to the angle θ.

On the other hand, as shown in FIG. 2 and FIG.
The lower end of the outlet frame 84 (the end opposite to the arrow H direction, the lower end of the drawing in each drawing) is integrally formed with a part of the side plate 90 of the casing 14 opposing the width direction (the arrow W direction). It is connected to. In addition, the side plate 90 is
It can be removed from. As shown in FIG. 5, by removing the side plate 90 from the casing 14, a gap through which the outlet frame 84 and the cross flow fan 30 can pass between the ceiling plate 22 around the opening 24 and the heat exchanger 28. Can be formed.

Thus, in the indoor unit 12 of the air conditioner 10, if the outlet frame 84 is removed, the cross flow fan 30 can be removed from the inside of the casing 14 and pulled out.

Next, the operation of the present embodiment will be described.

The air conditioner 1 installed on the ceiling in the room
0, the cross flow fan 30 is driven to rotate by driving the fan motor 36, and
Is sucked into the casing 14 through a suction port (not shown) formed at the center of the grill 26. The air sucked out of the casing 14 is guided by the suction side 32 of the fan casing to the heat exchanger 28 and passes therethrough. The refrigeration cycle between the heat exchanger 28 of the indoor unit 12 and the outdoor unit achieves air conditioning of the sucked air.

The air that has passed through the heat exchanger 28 is guided to the outlet side 34 of the fan casing by the rotation of the cross flow fan 30 and is sent out to the room 18 from an outlet (not shown) provided in the grill 26. Thereby, the air conditioner 10 achieves harmony of the air in the room 18.

Next, attachment and detachment of the cross flow fan 30 from the indoor unit 12 of the air conditioner 10 will be described.

To remove the cross flow fan 30 in the indoor unit 12 of the air conditioner 10, after removing the grill 26, the drain pan 38 is removed. As a result, as shown in FIG. 3A, the heat exchanger 28 inside the casing 14 appears, and the outlet frame 84 below the outlet side 34 of the fan casing is provided between the heat exchanger 26 and the casing 14. Then, a part of the cross flow fan 30 appears between the outlet frame 84 and the heat exchanger 28.

In the next operation, the outlet frame 84 is taken out. This outlet frame is made possible by releasing the engagement with the frame body 82, the heat exchanger 28 and the casing 14. Thus, the side plate 90 integrated with the outlet frame 84 can also be removed.

If the side plate 90 cannot be removed from the casing 14, the outlet frame 84 will be drawn out of the narrow space between the casing 14 and the heat exchanger 28. Removal of the mouth frame 84 is difficult. On the contrary,
In the indoor unit 12 of the air conditioner 10, since the side plate 90 at the lower end of the casing 14 is integrated with the outlet frame 84 and can be removed from the casing 14, the space between the casing 14 and the heat exchanger 28 is provided. Instead, the outlet frame 84 can be pulled out using a relatively large space between the heat exchanger 28 and the ceiling plate 22, and the operation becomes extremely simple.

As described above, by making a part of the casing 14 detachable, when taking out a part attached to the inside of the casing 14 from the inside of the casing 14, interference with other parts is suppressed, and the casing 14 is extremely removed. Can be easily removed.

In the outlet side 34 of the fan casing, by removing the outlet frame 84, a part of the bearing accommodating portion 54 to which the one rotating shaft 76A of the cross flow fan 30 is mounted is opened. Since the opening width is smaller than the diameter of the bearing member 66, the cross flow fan 30 does not come off in this state.

Next, when removing the cross flow fan 30, the base 66 of the bearing member 64 housed in the bearing housing 54 is elastically deformed, and
The bearing member 64 is pulled out from the opening generated by removing the bearing. The cross flow fan 30 attached to the bearing member 64 is also pulled out by the child, and when the rotation shaft 76B of the cross flow fan 30 is disengaged from the fan motor 36, the cross flow fan 30 Withdrawal of the flow 30 becomes possible.

That is, the cross flow fan 30 is moved from the bearing accommodating portion 54 to the rotating shaft 76 of the cross flow fan 30.
By pulling out A, the cross flow fan 30 is drawn out from between the flange portions 100 and 102. Thereby, the cross flow fan 30 can move along the axial direction, and the connection between the rotating shaft 76B and the fan motor 36 is released. At this time, since the fan motor 36 is mounted via the motor retainer 80 separately from the cross flow fan 30, when the cross flow fan 30 is removed, the fan motor 36 does not accidentally come off and fall off. . Further, since the fan motor 36 does not come off integrally with the cross flow fan 30, the removal of the cross flow fan is a light work requiring no labor.

Thereafter, the cross flow fan 30 is drawn out of the casing 14. However, since the side plate 90 at the lower end of the casing 14 has been removed integrally with the outlet frame 84, the cross flow fan 30 has to be 2
It can be withdrawn using a relatively large space between the heat exchanger 2 and the heat exchanger 28. When installing the cross flow fan 30, it is sufficient to perform the removal in the reverse order.
In the indoor unit 12 of the air conditioner 10, the cross flow fan 3
It is also very easy to attach 0.

As described above, in the air conditioner 10, the side plate 9 at the lower end of the casing 14 is integrated with the outlet frame 84.
By removing 0, not only the outlet frame 84 but also the cross flow fan 30 from the casing 14 can be very easily taken out. In the indoor unit 12,
The outlet side 34 of the fan casing is divided into a frame body 82 and an outlet
The cross flow fan 30 can be easily pulled out from the inside of the blowout side 34 of the fan casing.

Further, when removing the cross flow fan 30, the fan motor 36 does not come off. The fan motor 36 is heavier than the cross flow fan 30 and can come off integrally with the cross flow fan 30,
If the fixing of the fan motor 36 becomes unstable due to the removal of the cross flow fan 30, a problem such as a drop of the fan motor 36 may occur. On the other hand, in the indoor unit 12 of the air conditioner 10, since the fan motor 36 is attached by the motor retainer 80 separately from the cross flow fan, the fan motor 36 does not accidentally come off.

[0058]

[0059]

[0060]

According to the present invention, the suction side of the fan casing which is provided upstream of the heat exchanger and guides the indoor air to the heat exchanger, and the indoor air which rotates by the driving force of the driving means. A fan that sends out the air that has passed through the heat exchanger while sucking air, and a fan that is provided downstream of the heat exchanger to house and support the fan rotatably and guide the air that is sent out by the fan toward the room. An air conditioner that is housed through an indoor opening of a box-shaped casing disposed behind a ceiling in a room, the indoor unit including: The outlet side of the casing is divided into a frame body on the heat exchanger side with the axis of the fan as a boundary, and an outlet port provided on the side of the fan in the sending direction and detachably attached to the frame body, Since the bearing member supporting the fan by removing the blowing mouth from the room-side opening of the mold casing so as to partially open,
It is extremely easy to remove the fan housed on the blowout side of the fan casing. Also, by removing the blow-out opening from the indoor opening of the box-shaped casing, the bearing member supporting the fan can be partially opened, so that the blow-out opening can be removed from the indoor unit housed behind the ceiling. And the fan can be easily removed.

[0061]

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a state of an indoor unit applied to the present embodiment viewed from below.

FIG. 2 is a schematic configuration diagram viewed from a side of the indoor unit.

3A is a schematic view of an indoor unit showing a state where a drain pan is removed, FIG. 3B is a schematic plan view showing a cross flow fan, and FIG. 3C is a schematic plan view showing an outlet frame.

4A is a schematic configuration diagram of an indoor unit viewed from a direction opposite to FIG. 2, and FIG. 4B is a schematic side view illustrating an outlet frame taken out of the indoor unit illustrated in FIG. 4A.

FIG. 5 is a schematic configuration diagram showing the indoor unit with the outlet frame removed, viewed from the same direction as FIG. 2;

FIG. 6 is a cross-sectional view of a main part along an axial direction showing a bearing member to which a rotating shaft of a cross flow fan is attached.

[Explanation of symbols]

 Reference Signs List 10 air conditioner (air conditioner) 12 indoor unit 14 casing 16 indoor unit 28 heat exchanger 32 suction side of fan casing 34 blowout side of fan casing 30 cross flow fan 36 fan motor (driving means) 54 bearing housing part 82 frame body 84 Outlet frame (outlet part) 90 Side plate 100, 102 Flange part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 1/00 321 F24F 1/00 311

Claims (1)

(57) [Claims] 1. A suction side of a fan casing provided on an upstream side of a heat exchanger for guiding indoor air to the heat exchanger, and heat exchange while sucking indoor air by rotating by a driving force of a driving means. fan and duct-like fans fan is guided toward the air sent to the room together with the provided downstream of said heat exchanger rotatably supports and accommodates the fan for delivering air passing through the vessel having an indoor unit containing a blowing side of the casing, the indoor unit chamber
Room-side opening of a box-shaped casing placed behind the ceiling inside the building
An air conditioner which is accommodated by a frame body of the heat exchanger side axial portion of the outlet side of the fan casing wherein the fan as a boundary, detachably mountable to the frame body is provided on the delivery side of the fan And a blow-out port attached to the box-shaped casing.
By removing this outlet from the mouth,
An air conditioner characterized by partially opening a bearing member that supports an air conditioner.