JP2005164073A - Air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system with a motor fixing device having simple construction with good cost effectiveness for improving assembly and maintenance workability for a fan motor constituting a blower. <P>SOLUTION: A unit body 1 is partitioned into two chambers with a partition plate 6. A heat exchange chamber B storing an indoor heat exchanger 5 is formed on one chamber side and a blow chamber A storing the blower S constituted by the fan motor 16 and a fan 4 is formed on the other chamber side. The motor fixing device 20 is provided in the blow chamber for fixing and supporting the fan motor. It consists of a motor support 23 mounted and fixed into the blow chamber for supporting the fan motor and a motor fixture 22 for pushing and fixing the fan motor against the motor support. The motor support has two motor supporting plate portions 23a provided side by side at a preset space with fixture pawls 25 integrally protruded at the edges, and the motor fixture has a pair of symmetric slit portions 29a, 29b one of which is latched to the pawl of the motor supporting plate portion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner, for example, a ceiling-suspended indoor unit, in which a support structure for a fan motor constituting a blower is improved.

In an air conditioner composed of an indoor unit and an outdoor unit, the ceiling does not protrude from the wall surface, unlike a so-called wall-mounted indoor unit, and is attached in close contact with the ceiling board so that it does not feel a sense of pressure. An air conditioner equipped with a suspended indoor unit is often used.
While this type of indoor unit is required to reduce the size in the thickness direction (height direction) of the unit main body, which is the housing, as much as possible and to have a shape with less pressure, the width direction (horizontal direction) ) Has relatively few dimensional constraints. Therefore, the efficiency of the heat exchange action is improved by blowing out heat exchange air from a wide range along the ceiling surface.

  The blower used here is mainly of a type consisting of a fan motor that is a so-called two-axis motor with a rotating shaft protruding from both side surfaces, and a plurality of multi-blade fans attached to both rotating shafts of this fan motor. It has become. Of course, the multi-blade fan is easy to assemble as a blower, and because of its structure, it is easy for maintenance work to remove the attached dust by removing the fan motor because it is easy to attach dust. It is desirable to have a structure that can be used.

[Patent Publication 1] discloses a mounting base for a blower motor, which has a substantially U shape having a flat portion, and has a claw portion at one end and an outward flange portion at the other end. The fan motor is fixed to the motor base with a mounting bracket having a pair of leg portions and having a locking hole that can be locked to the claw portion and a mounting hole that can be tightened to the tightening hole of the flange portion. Yes.
In [Patent Publication 2], an anti-vibration rubber is fitted to a boss portion of a drive motor, and the motor is fixed by sandwiching the anti-vibration rubber between the motor support members. The motor support member is fixed to the main body. A fan motor support structure is disclosed that includes a fixed plate and a movable plate that is openable and closable so that one end is hinged to the fixed plate and the other end is sandwiched with an anti-vibration rubber.
Japanese Utility Model Publication No. 62-24168 JP-A-11-101462

In the above-mentioned [Patent Document 1], a claw portion projects from the leg portion constituting the mounting base along the surface direction of the leg portion, and the flange portion of the leg portion is bent outward to be provided with a tightening hole. . The mounting bracket having a latching hole that engages with the claw portion is provided with a mounting hole on an outer portion that is located on the flange portion and is opposed to the tightening hole, and a fastener is inserted into these hole portions.
In this way, it is only necessary to manufacture one type of mounting base itself, but two types of mounting brackets with different mounting hole positions on the left and right must be prepared. Mounting brackets are required. Therefore, the number of parts increases, resulting in an increase in cost and difficulty in assembling work.
In the above-mentioned [Patent Document 2], the movable plate is rotatably supported on the fixed plate via a hinge, and a fixing tool for attaching and fixing the fixed plate to the movable plate is necessary. It is complex and the impact on cost is not negligible.

  The present invention has been made paying attention to the above circumstances, and the object of the present invention is to improve the workability of assembly and maintenance with respect to the fan motor constituting the blower, and the structure is simple. An object of the present invention is to provide an air conditioner including a motor fixing device that is excellent in cost.

The present invention has been made to satisfy the above-mentioned object, and the unit main body is partitioned into two chambers by a partition plate, and heat exchange is performed in which a heat exchanger is accommodated on the partitioned chamber side of the unit main body. A chamber is formed, and a blower chamber is formed on the other chamber side to accommodate a blower device including a fan motor and a fan, and a motor fixing device for fixing and supporting the fan motor constituting the blower device is provided in the blower chamber. In the air conditioner,
The motor fixing device includes a motor support base that is fixedly attached to a blower chamber and supports a fan motor, and a motor fixture that presses and fixes the fan motor to the motor support base. , Two motor support plate portions that are juxtaposed with each other at predetermined intervals and that have a claw portion projecting integrally at each end edge, and one of the motor fixtures is provided on the claw portion of the motor support plate portion. It has a pair of symmetrical slits for hanging.

  According to the present invention, it is possible to improve the workability of assembly and maintenance with respect to the fan motor constituting the air blower, and there is an effect that a motor fixing device having a simple configuration and excellent cost can be provided.

Hereinafter, embodiments of an air-conditioning apparatus according to the present invention will be described with reference to the drawings.
1 is an overall perspective view of an indoor unit constituting an air conditioner, FIG. 2 is a cross-sectional view of the indoor unit, FIG. 3 is a bottom view showing the internal structure of the indoor unit, and FIG. 4 is a fan motor 16 and the fan motor 16 FIG. 5 is an exploded perspective view of the motor fixing device 20, FIG. 6 is a plan view of the motor support 23, and FIG. 7 is a side view of the motor fixing device 20 attached. It is.

In the figure, reference numeral 1 denotes a unit main body, which is attached to a ceiling bolt that is hung from a ceiling bolt (not shown) and in close proximity to the ceiling surface. One feature of the unit main body 1 is that the dimension in the width direction (horizontal direction) is extremely large compared to the dimension in the thickness direction (height direction).
The unit main body 1 includes a bottom plate portion 1a constituting the lower surface, a top plate portion 1b constituting the upper surface close to the ceiling in a suspended state, and a pair of left and right connecting the bottom plate portion 1a and the top plate portion 1b. It is comprised from the side-plate part 1c and the back surface part 1d. Only the side plate portion 1c is covered with the side cover 1e. The bottom plate portion 1a is provided with a suction port 2 in which a grille 10 and a filter 11 are detachably fitted along the width direction at a position approximately half of the front-rear direction perpendicular to the width direction of the bottom plate portion 1a.

Further, the front surface portion of the unit body 1 facing the back surface portion 1d is a blowout port 3 to which a horizontal louver 13 is attached so as to be freely opened and closed. A louver 12 is rotatably attached.
A partition plate 6 is provided inside the unit body 1. The partition plate 6 is erected along one side edge of the suction port 2 into which the grill 10 described above is fitted, and extends so as to contact the top plate portion 1 b of the unit body 1. Further, the partition plate 6 extends so as to contact the left and right side plate portions 1c constituting the unit main body 1, so that the inside of the unit main body 1 is partitioned into two chambers A and B by the partition plate 6 in the front-rear direction. become.

The inside of the unit body 1 has a blower chamber A in which a later-described blower S and an electric component box 9 for driving and controlling the blower S are arranged and housed on the suction port 2 side with a partition plate 6 interposed therebetween, and a blower outlet 3 side. A heat exchange chamber B in which the heat exchanger 5 is accommodated is formed.
Explaining from the heat exchange chamber B first, the indoor heat exchanger 5 and the drain receiver 7 are accommodated in the lower portion of the indoor heat exchanger 5. The indoor heat exchanger 5 is formed in a slanted state so that the unit body 1 is formed with a reduced vertical dimension as much as possible.

The drain receiver 7 is formed of, for example, a thick synthetic resin material, and receives heat from the slanted indoor heat exchanger 5 so as to receive all the drain water droplets that are generated and dripped in the refrigeration cycle operation. It is formed in an area that occupies almost the entire bottom surface of the exchange chamber B.
A drain pump is attached to the drain receiver 7, and drain water collected in the drain receiver 7 is discharged through a drain hose (both not shown) connected to the drain receiver 7.
An upper heat insulating material 7a for supporting the upper end portion of the indoor heat exchanger 5 is provided at the upper part of the heat exchange chamber B, and the heat generated by the refrigeration cycle action of the indoor heat exchanger 5 (warm / cold heat) is generated by the unit main body 1. As in the case of the drain receiver 7, it is formed to be thick so that it is not transmitted to the plate material that forms the plate.

Below, the air blower S arrange | positioned in the said ventilation chamber A is demonstrated.
The blower S includes a fan motor 16 that is a so-called biaxial motor that is fixedly supported by a motor fixing device 20 to be described later and whose rotating shafts 17a and 17b protrude from both side surfaces. A connecting shaft 17c is connected to one rotating shaft 17b via a coupling (not shown) to form an integrated long rotating shaft. Hereinafter, this is simply referred to as a rotating shaft 17b.

  The blower S includes a blower fan 4 that is fitted to the respective rotation shafts 17a and 17b of the fan motor 16 and a fan case 14 that surrounds the blower fan 4 except in the axial direction. While the number of fan motors 16 is one, a plurality of blower fans 4 and fan cases 14 are provided. The blower fan 4 uses a so-called multi-blade fan, and is of a type that blows air sucked in from the axial direction in the circumferential direction as it rotates.

In particular, as shown in FIG. 3, the fan motor 16 is disposed at a position shifted in one direction from the longitudinal center of the unit body 1, and one blower fan 4 is attached to the rotating shaft 17 a protruding from the one side surface. . A plurality (three in this case) of blower fans 4 are attached to the integrally long rotating shaft 17b protruding from the other side surface of the fan motor 16 at a predetermined interval.
A part of the rotating shaft 17 b is pivotally supported by a bearing member 18. The said bearing tool 18 is attached to the top-plate part 1b via the bearing fixing device 21. As shown in FIG. Therefore, when the unit main body 1 is attached to a predetermined part, the bearing tool 18 and the bearing fixing device 21 are suspended from the top plate portion 1b.

In particular, as shown in FIG. 2, the fan case 14 is divided into upper and lower parts and combined. Both side surfaces of the fan case 14 are provided with openings through which the rotary shafts 17 a and 17 b penetrate and both side surfaces of the blower fan 4 are exposed, and form a suction port body n of the blower fan 4.
A blow-out port body m, which is an opening having a rectangular cross section, is integrally provided on the peripheral surface of the fan case 14, and the tip of the blow-out port body m is an opening having the same shape provided in the partition plate 6. And protrudes to the heat exchange chamber B side. Accordingly, air is sucked from the suction port body n as the blower fan 4 rotates, and blown from the blowout port body m.

Next, the motor fixing device 20 that supports and fixes the fan motor 16 will be described in detail with reference to FIGS.
The motor fixing device 20 is attached to the top plate portion 1b in a state where the fan motor 16 is supported and fixed. That is, when the unit main body 1 is attached to a predetermined portion, the fan motor 16 and the motor fixing device 20 are suspended from the top plate portion 1b.

The motor fixing device 20 includes a motor support base 23 that is attached to the blower chamber A and supports the fan motor 16, and a motor fixture 22 that presses and fixes the fan motor 16 supported by the motor support base 23 to the motor support base 23. Consists of
The motor support 23 will be further described. The motor support 23 includes a pair of left and right support plate portions 23a, and a connecting plate portion 23b that is installed between the support plate portions 23a and integrally connects the support plate portions 23a. It is formed in a substantially U-shape when viewed from above.

The distance between the motor support plate portions 23a is formed to be somewhat larger than the axial length of the motor body 16A constituting the fan motor 16, and the bosses projecting integrally on both side surfaces of the motor body 16A. It is formed smaller than the dimension between the end faces of 16B.
A substantially semicircular motor receiving portion 30 is cut out at a part of the upper edge in the drawing of each motor support plate portion 23a. The radius of curvature of the motor receiving portion 30 is substantially the same as the radius of curvature of the boss portions 16 </ b> B on both sides of the fan motor 16. Note that when the fan motor 16 is actually fixedly supported on the motor fixing device 20, the vibration isolating rubber member is wound along the peripheral surface of the boss portion 16B, so that the radius of curvature of the motor receiving portion 30 is the boss portion 16B. Is substantially the same as the value obtained by adding the thickness of the rubber member for vibration isolation to the radius of curvature.

At the edge of each motor support plate portion 23a, a mounting piece 24 is integrally bent outwardly and horizontally in a portion adjacent to the connecting plate portion 23b on one side of the motor receiving portion 30, Each mounting piece 24 is provided with a mounting hole 24a comprising a screw hole.
At the edge of the motor support plate portion 23a, the portion opposite to the mounting piece 24 via the motor receiving portion 30 is obliquely formed, and a part of the inclined end edge of the support plate portion 23a is inclined. A fixing claw portion 25 protruding in the surface direction is integrally projected. The tips of the inclined end edges extend upward in the figure, and projecting piece portions 27 are integrally bent at these ends so as to face each other inward, and fixed to each projecting piece portion 27. A hole portion 27a is provided.

  For the top plate portion that is integrally bent along the lower edge of the figure opposite to the motor receiving portion 30 of each motor support plate portion 23a, particularly facing each other inward as shown in FIG. A fixed piece 26 is provided. A mounting hole 26a is provided at one end of the top plate fixing piece 26, and a top plate claw portion 26b is projected from the other end. Further, a plurality of reinforcing concave portions 31 are integrally provided at the bent portions of the connecting plate portion 23b, the top plate portion fixing piece 26, and the protruding piece portion 27 with respect to the motor support plate portion 23a.

  As shown in FIG. 5, the motor fixture 22 has a strip-like shape whose dimension in the width direction is much smaller than the dimension in the longitudinal direction. One end portion of the motor fixture 22 is formed by bending a mounting portion 28 having substantially the same width as the mounting piece 24 provided on the motor support plate portion 23a in a substantially horizontal direction. The mounting portion 28 is provided with mounting holes 28a, and both side edges of the mounting portion 28 are bent integrally with positioning pieces 28b.

  The configuration ahead of the attachment portion 28 in the motor fixture 22 is composed of a semicircular portion 22a and a portion 22b formed in an oblique straight shape on the tip side of the bent portion 22a. A pair of reinforcing convex portions 22 c projecting to the inner surface side are arranged in parallel on the bent portion 22 a of the motor fixture 22. The radius of curvature of the bent portion 22a is substantially the same as the radius of curvature of the boss portion 16B constituting the fan motor 16, and the actual radius of curvature is the radius of curvature of the boss portion 16B plus the thickness of the rubber member for vibration isolation. It is almost the same as the value obtained.

  The inclination angle of the oblique straight portion 22b in the motor fixture 22b is formed substantially the same as the inclination angle of the edge provided with the fixture claw portion 25 of the motor support plate portion 23a. A pair of left and right slit portions 29a and 29b are arranged in parallel at the tip of the straight portion 22b. The slit portions 29a and 29b are formed to have a width dimension and a length dimension that allow the fixing claw portion 25 of the motor support plate portion 23a to be detachably engaged.

In order to attach the fan motor 16 to the air blowing chamber A via the motor fixing device 20 configured as described above, the work is performed with the unit body 1 reversed upside down from the actual ceiling mounted state. That is, the top plate portion 1b is on the bottom surface side, and the motor support base 23 constituting the motor fixing device 20 is attached to the predetermined portion.
Specifically, as shown in FIG. 7, a top plate fixing piece 26 formed at the end of the motor support plate 23a is placed on the unit main body top plate 1b. Then, the protruding piece portion 26b at the tip of the top plate fixing piece 26 is inserted into the hooking hole 8 provided in the top plate portion 1b. At the same time, the position of the motor support 23 is set by bringing the protruding piece 27 into contact with the plate surface of the partition plate 6.

  In this state, the mounting hole 26a of the top plate fixing portion 26 faces a mounting hole (not shown) which is a screw hole provided in the top plate portion 1b, so that a fitting is inserted into these hole portions 26a and tightened. Fix it. Further, since the fixing hole 27a of the protruding piece 27 opposes a mounting hole (not shown) which is a screw hole provided in the partition plate 6, an attachment is inserted into the hole 27a and tightened and fixed. . Therefore, the motor support base 23 is firmly attached and fixed to the unit main body top plate portion 1 b and the partition plate 6.

The fan motor 16 is prepared, the motor body 16A is opposed to the upper part between the motor support plate parts 23a, and is lowered to be inserted and interposed between the motor support plate parts 23a. Inevitably, the boss portions 16B projecting on both side surfaces of the motor main body 16A are placed on the motor receiving portions 30 in the respective motor support plate portions 23a.
The motor fixture 22 is prepared, and one of the pair of slit portions 29a and 29b provided at the tip of the straight portion 22b is engaged with the fixture claw portion 25 of the motor support plate portion 23a. In particular, referring to FIG. 4, the right side motor fixture 22 in the figure engages the left slit portion 29b with the fixture claw portion 25, and the left side motor fixture 22 in the figure has the right slit portion 29a. It engages with the claw portion 25 for the fixture.

  While the mounting piece 24 is bent outward with respect to the motor support plate portion 23a, the fixture claw portion 25 is provided along the plate surface direction of the motor support plate portion 23a. The slit portions 29a and 29b that engage with the claw portion 25 are the inner ones.

And since each motor fixing tool 22 is provided with a pair of slit portions 29a and 29b, any motor fixing tool 22 will not be mistaken on the left and right with respect to the fan motor 16, and the assembly work will be difficult. You don't have to use
This state is maintained, and the bent portion 22a of the motor fixture 22 is placed along the fan motor boss portion 16B. Then, the inclined straight portion 22b of the motor fixture 22 is placed on the front and rear inclined end edges of the motor support plate portion 23a where the fixture claw portion 25 is provided, and the mounting portion 28 at the end of the motor fixture 22 is supported by the motor. It is placed on the mounting piece 24 of the plate portion 23a.

Positioning pieces 28b provided along both side edges of the mounting portion 28 are engaged with both side edges of the mounting piece 24, thereby restricting displacement of the motor fixture 22. The mounting hole 28a of the mounting portion 28 is exactly opposite to the mounting hole 24a of the mounting piece 24, and a mounting tool 35 is inserted into these holes to fasten and fix. Therefore, as shown in FIG. 4 in particular, the motor fixture 22 firmly presses and fixes the fan motor 16 to the motor support base 23.
When the assembly of all the components is completed, the product is installed, the refrigeration cycle operation is performed, and the blower S is driven, the indoor air is sucked from the suction port 2 and the heat exchange chamber B is passed through the blower chamber A. It sprays on the indoor heat exchanger 5. The room air exchanges heat when passing through the indoor heat exchanger 5 and is guided and blown out by the vertical louver 12 and the horizontal louver 13 provided in the outlet 3.

The fan motor 16 constituting the blower device S is securely fixed and supported by the motor fixing device 20, and there is no room for vibration due to driving.
The motor fixing device 20 is attached and fixed to the blower chamber A, and includes a motor support base 23 that supports the fan motor 16 and a simple motor fixture 22 that presses and fixes the fan motor 16 against the motor support base 23. The configuration has little impact on the cost.

The motor support base 23 includes two motor support plate portions 23a arranged in parallel with each other at a predetermined interval, and a fixture claw portion 25 projects from each motor support plate portion 23a. Since the motor fixture 22 is engaged with the motor 25, the mounting work of the motor fixture 22 to the motor support plate portion 23a is simplified.
And the said motor fixing tool 22 is provided with a pair of left-right symmetry, and since it has the slit parts 29a and 29b which the fixing | hook nail | claw part 25 of the motor support plate part 23a latches in any one of them, There is no mistake in the left and right, improving workability.

Each motor support plate part 23a is connected by a connection plate part 23b, and a motor support base 23 having a substantially U-shaped plate is integrally formed. In a state where the motor support base 23 is attached to the blower chamber A, the motor support plate portion 23a which is an open side plate body of the substantially U-shaped plate body is attached and fixed to the top plate portion 1b and the partition plate 6, and the connection side plate The connecting plate portion 23b, which is a body, is the non-attached side.
Since the connecting plate portion 23b is provided and the position thereof is determined in this way, the mutual interval between the motor support plate portions 23a is kept accurately and constant with the motor support base 23 attached to a predetermined portion. Therefore, the motor main body 16A interposed between the motor support plate portions 23a can be reliably prevented from falling off.

  Since the projecting piece portion 27 that is latched and fixed to the partition plate 6 is provided at the edge of each motor support plate portion 23a, the distance between the pair of motor support plate portions 23a is kept accurately constant. This reliably prevents the fan motors 16 attached to the motor support plate portions 23a from dropping off.

Furthermore, since the positioning pieces 28b are provided on both side edges of the mounting portion 28 of the motor fixture 22, positioning of the motor support plate portion 23a with respect to the mounting piece 24 is facilitated, and the positional deviation of the motor fixture 22 is reliably regulated. . Then, the mounting hole 28 a of the mounting portion 28 can be easily positioned with respect to the mounting hole 24 a of the mounting piece 24.
The motor fixing device 20 of the present invention is not limited to the above-described configuration, and various modifications can be made without departing from the spirit of the present invention, and the present invention includes all of these. is there.

The perspective view of the indoor unit which comprises the air conditioning apparatus based on one embodiment of this invention. Sectional drawing of the indoor unit based on the embodiment. The bottom view of the internal structure of the indoor unit based on the embodiment. The perspective view which shows the state which attached the fan motor to the motor fixing device based on the embodiment. The disassembled perspective view of the motor fixing device based on the embodiment. The top view of the motor support stand based on the embodiment. The side view which shows the state which attached the motor fixing device based on the embodiment to the predetermined | prescribed site | part.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 6 ... Partition plate, 1 ... Unit main body, 5 ... Indoor heat exchanger, B ... Heat exchange chamber, 16 ... Fan motor, 4 ... Multiblade fan, S ... Blower, A ... Blower, 20 ... Motor fixing device, DESCRIPTION OF SYMBOLS 23 ... Motor support stand, 22 ... Motor fixing tool, 25 ... Fixing claw part, 23a ... Motor supporting plate part, 29a, 29b ... Slit part, 23b ... Connecting plate part, 27 ... Projection piece part.

Claims (2)

A unit main body divided into two chambers by a partition plate;
A heat exchange chamber that is formed on one compartment side of the unit main body and houses a heat exchanger, and a blower chamber that houses a blower device that is formed on the other chamber side and includes a fan motor and a fan;
In an air conditioner including a motor fixing device that is fixed to and supports a fan motor included in the air blowing chamber and that constitutes the air blowing device,
The motor fixing device is
A motor support that is attached and fixed to the blower chamber and supports the fan motor, and a motor fixture that presses and fixes the fan motor to the motor support.
The motor support base includes two motor support plate portions that are juxtaposed with each other at a predetermined interval and in which claw portions protrude integrally with each edge.
A pair of the motor fixtures are provided symmetrically, and one of the motor fixtures has a slit portion that hooks a claw portion of the motor support plate portion. Each of the motor support plate portions is connected to each other by a connection plate portion to form an integral configuration,
2. An air conditioner according to claim 1, wherein a projecting piece for latching and fixing to the partition plate is integrally provided at an edge of each motor support plate.

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