JP3302058B2 - Ceiling suspended air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-suspended air conditioner.

[0002]

2. Description of the Related Art A ceiling-suspended air conditioner has been conventionally known.

[0003] This is because the air conditioner main body is attached to the ceiling surface of the room to be air-conditioned via suspension bolts, and the bottom surface of the main body is separated from the ceiling surface by an opening of a ceiling plate provided in parallel with the ceiling surface. It is exposed to the room to be air-conditioned.

In the main body of the air conditioner, for example, two heat exchangers which are inclined with respect to each other and are symmetrical in a U-shape are arranged, and along these heat exchangers, two heat exchangers provided with a cross flow fan are provided. A blower is arranged. On the bottom surface of the main body, two air outlets are opened at spaced positions, and an air inlet is provided between the air outlets.

When a refrigeration cycle operation is performed and each blower is driven, the air to be conditioned is sucked into the main body from the suction port.
It passes through a heat exchanger to exchange heat. During the cooling operation, the air is changed to cool air, and during the heating operation, the air is changed to warm air, and the air is guided from the air outlet to the room to be air-conditioned.

[0006]

Problems to be Solved by the Invention
Japanese Patent No. 29019 discloses this type of air conditioner structure, but the specifications of the two blowers used here are different from each other, and the rotation directions of the electric motor and the cross flow fan are also different.

Therefore, two types of electric motors and cross-flow fans must be prepared in one main body, and the number of types of parts increases, and the work must be performed while confirming each component. It is time consuming.

Further, there is provided a means for controlling the heat exchange air blown out from the outlet to a set temperature. As one of the factors for determining the temperature, the temperature of the two heat exchangers is controlled. Detected.

That is, each heat exchanger is provided with a heat exchange sensor, a signal line is connected to each, and the heat exchanger extends to an electric component box provided on the side of the main body. A control terminal is provided in this box, and a signal line of the sensor is connected. However, the conventional signal line is routed from the heat exchange sensor along the side and top surfaces of the main body, and then extended to the electrical component box.

[0010] Therefore, when a repair work on the heat exchange sensor is required, it must be performed after disassembling the main body once and removing other components, which is extremely troublesome.

In addition, the air conditioner requires a signal line such as a line for controlling the number of revolutions of the blower motor and a line for serial signal, in addition to the signal line connected to the heat exchange sensor. Further, a power cable must be connected to the blower motor, and a power line including a power supply line, a drain pump lead wire, and the like is also required.

Conventionally, a signal line and a power line are
Wiring is performed in the main body through the gaps between the components, which also intersect in the electric component box. The component box is provided with one hole, from which a signal line and a power line are bundled and extended to the outside.

As described above, since the lines are mixed in the main body and the electric parts box, noise generated from the power line is easily picked up by the signal line, and the control reliability may be reduced. There is. Further, since the wiring process is not systematically performed, workability is poor and maintenance problems are serious.

This type of device is mounted on a ceiling surface of a room to be air-conditioned via suspension bolts, while the bottom surface of the main body is
Since the air-conditioned room can be viewed from the opening provided in the ceiling plate, setting the position of the ceiling plate opening with respect to the hanging position of the main body is troublesome.

Conventionally, as shown in FIG. 6A, for example, as shown in FIG. 6A, the mounting position of the suspension bolt is located at a position symmetrical from the center position A of the main body 1, that is, at a position distributed to the same dimensions a and a '. , A fixing bracket m having a mounting hole n is provided.

For the convenience of piping work, connecting pipes p are collectively projected on one side of the main body H, and the distance from the mounting hole n to one side edge of the opening U provided in the ceiling plate is correspondingly increased. b ′ is large (b <b ′) compared to the distance b on the other side where there is no connection pipe p..., and c = a + b <c ′ = a
'+ B'.

Therefore, the opening center position B is shifted toward the connection pipe p with respect to the center position A of the main body H, and the operator sets the position of the suspension bolt symmetrically with respect to the opening center B. In many cases, a mistake in which the main body H cannot be attached is likely to occur.

Therefore, as shown in FIG.
Is not changed, and a new center position C is set so that the center position of the new opening V overlaps the center position of the main body. The distance a 'from here to the position of the mounting hole n on the connection pipe p side is the same as that described above with reference to FIG. 5A, and further, the distance b' from here to the opening V side edge.
Does not change, and c ′ = a ′ + b ′. Since the position of the mounting hole n on the side opposite to the connection pipe is also set symmetrically to the left and right, the same reference numerals are given.

[0019] Therefore, the distribution of the hanging bolts and the opening size can be set equally from the center position C, so that installation errors can be prevented. However, the area of the opening V of the ceiling plate is the same as that described above. It will be bigger than. In accordance with this, the area of the decorative panel to be attached to the bottom surface of the main body H must be increased, which is not preferable in the interior and is disadvantageous in cost.

[0020] The present invention has been made in view of the above circumstances, it is an object of the specifications of the blower fan and an electric motor constituting each of the blower, both cars in common, considering the arrangement Accordingly, it is an object of the present invention to provide a ceiling-suspended air conditioner capable of improving manufacturability, assembling workability by sharing parts, and improving parts management.

[0021]

According to the present invention , a unit body of an air conditioner having an upper surface portion and a side surface portion and having an open lower surface is attached to a ceiling surface of a room to be air-conditioned via suspension bolts. The air-conditioned room faces the opening provided in the parallel ceiling plate with a predetermined gap , and the lower surface is opened from the lower opening of the unit main body, and the side plate of the unit main body is opened.
And a notch in this side.
The left and right heat exchangers arranged in a substantially U-shape in side view are accommodated in the casing, and
It is fitted into the notch and attached and fixed via the support.
2 whose serial heat exchanger are installed two transverse fan type blower on both sides to be disposed therebetween, the bottom of the unit, to blow guides the heat exchange air blown by the blower to the right and left from the ceiling Ceiling-type air conditioner with two outlets and a suction opening in the middle of the two outlets.
Each electric motor consists of an electric motor and a blower fan.
Are specifications such as the rotating shaft rotation direction, rated current and dimensional structure
Are the same as each other, and each fan has a diameter,
Specifications such as blade bending direction and number of blades are the same
The electric motors were housed in the casing so as to be arranged in parallel with each other and the electric motor position was reversed left and right.

[0022]

According to the present invention , two blowers are an electric motor and a blower fan having the same specification and the same rotation direction , and these are arranged in parallel with the casing and the electric motor positions are reversed left and right. The blowout directions can be set opposite to each other, so that the installation of the blower does not require a nerve, and the parts management becomes easy.

[0023]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an exploded view of an indoor unit of a ceiling-suspended air conditioner.

In FIG. 1, reference numeral 1 denotes a substrate 2 having an upper surface and a pair of side surfaces bent in a U-shape in cross section, and side plates 3a and 3b provided on both side surfaces of the substrate 2, and the lower surface side. It is a unit body that opens.

The one side plate 3a is provided with a notch 4 through which a drain pipe (not shown) is inserted, and in a state where the drain pipe is inserted through the notch 4,
A piping cover 5 that covers the remaining gap is provided.

A power supply terminal 6, which is electrically connected to an external power supply, is mounted in the unit body 1 along the side plate 3a. An electric component box 7 for accommodating electric components (not shown) is provided in the unit main body 1 along the other side plate 3b, and a power component part 8 is formed together with the power terminal 6.

In other words, the power supply component section 8 is composed of the power supply terminal 6 and the electrical component box 7, which are arranged in the unit main body 1 at positions opposite to each other. Unit body 1 near the side plate 3a
Inside, a drain pump 9 to which a drain pipe is connected is arranged.

A casing 10 is mounted through an opening on the lower surface of the unit main body 1.
Inverted U-shaped notches 11 are provided on both side surfaces in the same direction as the side plates 3a and 3b, the lower surfaces of which are open. Fans 12, 12 are fitted into these notches 11, respectively, and are mounted and fixed via supports 15, 15, respectively.

That is, here, two blowers 12, 1
2 will be deployed. Each blower 12
Comprises an electric motor 13 and a blower fan 14 connected to a rotating shaft of the electric motor 13. The blower fan 1
Reference numeral 4 denotes a so-called cross flow fan, which is extremely long in the axial direction and blows air taken in from the circumferential direction with rotation to blow in another circumferential direction.

The indispensable conditions for the blowers 12, 12 include the rotating shaft rotation direction of each electric motor 13,
Two units with the same specifications such as input / output, rated current, type, and dimensional structure must be prepared.

Similarly, the blowing fan 14 has a diameter, a total length,
Two sets having the same specifications such as the blade bending direction, material, and number of blades must be prepared and connected to the electric motor 13.

Each of the blowers 12, 12 thus configured
Are mounted and fixed at predetermined positions on the casing 10 in parallel with each other. However, the electric motors 13 are always positioned so that the positions of the electric motors 13 are opposite to each other.

Therefore, if the suction directions are set to the same direction while each of the blowers 12, 12 is driven, the blowing direction is symmetric. For example, each blower 1
If these intermediate portions are set in the suction direction in a side view with respect to 2, 12, the left and right diagonal directions become the blowing directions. The support 1 for supporting each of the blowers 12, 12 on a casing.
Noses 16, 16 are attached and fixed to 5, 15.

Also, between each of the blowers 12, 12, 2
A set of heat exchangers 17, 17 are provided. These heat exchangers 17 have a number of fins penetrated by a heat exchange pipe,
It is of a find tube type, is in the form of a flat plate, is inclined so that the upper ends thereof are in contact with each other, and the lower ends thereof are separated from each other.

A drain pan 18 is provided below each of the heat exchangers 17 and 17. This drain pan 18
Is formed in a planar rectangular frame shape so as to face the lower end portions of the heat exchangers 17, 17, and has an opening 18a at the center.

As shown in FIGS. 2 and 3, a partition plate 19 is interposed between the heat exchangers 17, 17 to partition the inside of the casing 1 left and right. A cord holder 20 is attached to the partition plate 19, while the heat exchanger 17,
Heat exchange sensors 21 and 21 are attached to 17.
Signal line 2 connected to these heat exchange sensors 21 and 21
Midway portions 2 and 22 are collectively held by the cord holder 20.

As shown in FIG. 3 only, the drain pan 1
On the lower side of 8, a decorative panel 23 for closing the lower surface opening of the unit main body 1 is provided. This decorative panel 2
3, a suction port 24 is provided in a portion of the drain pan 18 that faces the opening 18a.

[0038] Both sides of the drain pan 18 and the casing 10
The two outlets 25,
25 are provided. In each outlet 25, 25,
Louvers 26, 26 that are inclined in opposite directions to each other are provided.

As shown in FIG. 4, a pair of concave grooves 27, 27 are provided on the back side (lower side) of the drain pan 18 along both sides of the opening 18a. 28 and the signal line 29 are fitted and held.

That is, the electrical component box 7 provided at one end of the casing 10 and the power supply terminal 6 provided at the other end
And a power line 28 in which a power cord, a cord connected to the electric motor 13 of the blower 12 and the drain pump 9, and the like, a signal line 22 connected to the heat exchange sensor 21, an electric motor 13 rotation speed control lines,
Of a signal line 29 that combines serial signal lines,
Two lines 28 and 29 are erected.

The power line 28 has one concave groove 27.
The signal line 29 is fitted and held along the other groove 27. Therefore, the lines 28 and 29 are wired as far apart as possible, so that the wiring process is not lost.

As shown in FIG. 3 again, on both sides in the longitudinal direction of the unit main body 1, fixing brackets 30, 31 which will be described later are protrudingly provided. The lower end of the hanging bolt 34 is attached and fixed.

That is, the main body 1 is supported by being suspended from the ceiling surface 33 via the suspension bolts 34. Then, the main body 1 is inserted into the opening 36 of the ceiling plate 35 provided in parallel with the ceiling surface 33, and the decorative panel 23 projects from the lower surface of the ceiling plate 35, and faces the inside of the room R to be air-conditioned.
The total area of the decorative panel 23 is larger than the area of the opening 36, and therefore, all gaps between the peripheral surface of the main body 1 and the peripheral edge of the opening 36 are shielded.

Also, in the same figure, since all are schematically shown, the protrusion dimensions of the fixing brackets 30 and 31 on both sides are shown to be substantially the same.
It differs from the conditions for setting the dimensions for mounting and fixing of the above and the dimensions for setting the area of the opening 36 of the ceiling plate 35 as described later.

As shown in FIG. 5, the size of the opening 36 of the ceiling plate is exactly the same as that described above with reference to FIG. 6A, and the area of the opening as shown in FIG. It is a necessary condition not to expand.

The center position A of the unit body 1 is shown in FIG.
(A) may be the same as that described in (A), and a conventional one is used as the fixing bracket 31 on the non-pipe connection side. Therefore, the distance b from the mounting hole 32 of the fixture 31 to one side edge of the opening 35 is not different from the conventional case.

From the opening center position B, positions d, d equally distributed to both sides in the longitudinal direction of the main body 1 and to the left and right.
Then, the fixture 30 on the connection side of the pipe 4 is connected to the other fixture 3 so that the mounting holes 32 of the fixtures 30 and 31 are located.
Deformation is extended more than 1.

A mounting hole 32 of this deformation fixing bracket 31
The distance b to the side edge of the opening 35 is exactly the same as the other distance described above.

As described above, the left and right suspension bolts 34 are set at the distances d, d equally distributed left and right around the center position B of the ceiling plate opening 35 without changing the center position A of the main body 1.
And the opening dimension of the opening 35 can be set to the distances c, c distributed left and right about the center position B.

The indoor unit is installed in this manner. By simultaneously driving the blowers 12 and 12 together with the refrigeration cycle operation for the heat exchangers 17 and 17, the air to be conditioned is supplied from the suction port 34 to the unit body 1. The air is sucked into the inside, is divided right and left by the partition plate 19, and passes through each heat exchanger 17.

At this time, the air to be conditioned is supplied to each heat exchanger 1
The heat is exchanged with the cooling air 7 and 17, and the air is changed into the cool air during the cooling operation, and the air is changed into the warm air during the heating operation, and is blown into the air-conditioned room R from each of the air outlets 25 and 25.

The blowers 12, 12 are an electric motor 13 and a blower fan 14 having the same specifications and rotating in the same direction . These are arranged in the casing 10 in parallel with each other, and the position of the electric motor 13 is reversed left and right. , The blowout directions can be set to be opposite to each other, and the installation of the blowers 12 and 12 does not particularly require the use of nerves, thereby facilitating parts management.

The heat exchange sensors 21 attached to the heat exchangers 17 detect the respective temperatures in real time and send the detection signals to a control unit in the electrical component box 7. here,
Upon receiving a detection signal from another component, a control signal is sent to each component so as to perform an operation adapted to the set conditions.

The middle part of the signal line 22 extended from each of the heat exchange sensors 21 is collectively held by the holder 20 attached to the partition plate 19 and further led to an external power source. At the time of repair and replacement of 21, for example, it is possible to work as it is without removing other parts, thereby facilitating.

A power line 28 extending from each blower 12 and the like, a signal line 29 extending from a heat exchange sensor 21 and the like attached to each heat exchanger 17, a pair of concave grooves 27 provided in the drain pan 18, Since the wires 28 and 29 are fitted and held respectively, the wires 28 and 29 are wired separately from each other, so that the noise generated from the power line 28 does not affect the signal line 29.

When the main body 1 is installed, only one of the fixing brackets 30 is mounted so that the mounting position of the suspension bolt 34 is located symmetrically from the opening center B without increasing the size of the opening 36 of the ceiling plate 35. Since the projecting lengths are made different, mounting errors of the suspension bolts 34 are eliminated.

It should be noted that the present invention is not limited to the structure of the above embodiment, and various modifications can be made without departing from the scope of the present invention.

[0058]

According to the present invention , since the specifications of the blower fan and the electric motor constituting each blower are common to both units, productivity can be improved and only a single component can be mounted. In addition, the work can be simplified, and the assembling workability is improved. Further, there is an effect that parts management can be facilitated by sharing parts.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of an embodiment of the present invention, in which an indoor unit of a ceiling-suspended air conditioner is partially omitted and disassembled.

FIG. 2 is a schematic plan view of the indoor unit of the embodiment.

FIG. 3 is a schematic longitudinal sectional view of the indoor unit of the embodiment.

FIG. 4 omits a part of the indoor unit of the embodiment,
In particular, a perspective view showing a wiring structure.

FIG. 5 is a dimension setting diagram for mounting the indoor unit on the ceiling according to the embodiment.

FIGS. 6A and 6B are dimension setting diagrams for mounting the indoor unit on a ceiling, showing different conventional examples.

[Explanation of symbols]

R: Air-conditioned room, 33: Ceiling surface, 34: Hanging bolt, 35
... ceiling plate, 36 ... opening, 1 ... unit body, 17 ... heat exchanger, 25 ... blower outlet, 12 ... blower, 13 ... electric motor, 14 ... blower fan, 19 ... partition plate, 21 ... heat exchange sensor, Reference numeral 22: signal line, 20: holder, 29: signal line, 28: power line, 30, 31: fixing bracket.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Daisuke Saito 336 Tatehara, Fuji-shi, Shizuoka Prefecture Inside the Toshiba Fuji Plant (56) References JP-A-63-41742 (JP, A) (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 13/32

Claims (1)

(57) [Claims] 1. An air conditioner is mounted on a ceiling surface of a room to be air-conditioned via suspension bolts, and a bottom surface of the room is opened through a ceiling plate parallel to the ceiling surface with a predetermined gap therebetween. A unit body of an air conditioner, which has an upper surface and a side surface, and is open at the lower surface.
And the side in the same direction as the side plate of the unit body.
A casing provided with a notch in the side surface thereof; two right and left heat exchangers arranged in a substantially C shape in a side view accommodated in the casing; and fitted in the notch.
And two cross-flow fan-type blowers installed on both sides so that the heat exchangers are disposed between them, and are opened at the bottom of the unit main body, and left and right by each blower. A ceiling-suspended air conditioner having two outlets for guiding the blown heat exchange air from the ceiling to the room to be air-conditioned and a suction port at an intermediate portion thereof. The two blowers are electrically connected to each other. Motor and blower
Made down, the electric motor, the rotary shaft rotating direction, the rated current and dimensions
The specifications such as the structure are the same, each blower fan has a diameter, full length, blade bending direction and
The specifications such as the number of blades are the same, and the two blowers are arranged in the casing in parallel with each other and the electric motor positions are reversed left and right.
A ceiling-suspended air conditioner characterized by that: