WO2010050600A1

WO2010050600A1 - Air-conditioning device

Info

Publication number: WO2010050600A1
Application number: PCT/JP2009/068725
Authority: WO
Inventors: 昭久須藤; 伸哲吉武; 誠哉青藤
Original assignee: 東芝キヤリア株式会社
Priority date: 2008-10-31
Filing date: 2009-10-30
Publication date: 2010-05-06
Also published as: JPWO2010050600A1; JP5174181B2

Abstract

The device is configured from an indoor unit (X) and an outdoor unit (Y), and the indoor unit (X) and the outdoor unit (Y) are connected to each other with coolant piping, power lines and communication lines. The indoor unit (X) is provided with a wiring connection part (Z). The wiring connection part (Z) is provided with a power line terminal mount (13) that is provided on the upper front side and to which power lines (C3, C4) are connected, a communication line terminal mount (14) that is provided on the lower back side and to which the communication lines (C1, C2) are connected, and a clamp base (7) that covers a portion of the communication lines and the communication line terminal mount (14) while providing a clamp (26) for immobilizing the power lines that are connected to the power line terminal mount (13), so space is reduced in the wiring connection part (Z) where the power lines (C3, C4) and the communication lines (C1, C2) are connected, while wiring workability is improved.

Description

Air conditioner

The present invention relates to an air conditioner composed of an indoor unit and an outdoor unit, and more particularly to an improvement in the structure of a wiring connection portion provided in an indoor unit and connected to a power line and a communication line.

An air conditioner composed of a wall-mounted indoor unit attached to a wall surface height of an air-conditioned room and an outdoor unit arranged outdoors is frequently used. The indoor unit and the outdoor unit are connected to the refrigerant pipe by a power line and a communication line. The indoor unit is provided with an electric component box provided with a wiring connection portion, and a power line and a communication line are connected thereto.

While the installation space for the indoor unit to the air-conditioned room wall is minimized, the indoor heat exchanger must ensure the necessary heat exchange. Therefore, an indoor heat exchanger occupies most of the internal space of the indoor unit, and an electrical component box is disposed on one side of the interior unit, and a wiring connection portion is provided in parallel on the front surface of the electrical component box.

¡Along with the electrical component box, the wiring connection must also be made smaller. However, the conventional wiring connection portion has a structure in which a power supply terminal block to which a power supply line is connected and a communication line terminal block to which a communication line is connected are arranged side by side, and is long in the left-right width direction. It was. Therefore, there is known an electrical box that is reduced in the left-right width direction (for example, Japanese Patent Application Laid-Open No. 2007-248011).

In the technique described in Japanese Patent Application Laid-Open No. 2007-248011, the first mounting surface is formed on the upper surface of the electric component box, and the power cord terminal plate is attached to the first mounting surface. A power cord retainer is disposed on the power cord retainer plate, and an external wiring terminal block is disposed on the power cord retainer. Then, an external wiring retainer is attached to the upper part of the external wiring terminal block.

Since the electrical component box is configured in such a manner that the respective components are stacked one above the other in this way, the left and right width direction dimensions can be small (narrow), and the installation space can be reduced. However, questions remain in terms of wiring workability.

That is, the power cord connected to the power cord terminal plate is located at the lowest position. When removing this power cord, remove the uppermost external wiring retainer, remove the lower external wiring terminal block, and then remove the lower power cord retainer to connect to the power cord terminal plate. The power cord is exposed.

After removing the power cord and completing the necessary work, reconnect the power cord to the power cord terminal plate, attach the power cord retainer on the power cord terminal plate, and place the power cord retainer on top of the power cord retainer. Install the wiring terminal block and attach the external wiring retainer to the top of the external wiring terminal block. Thus, the wiring work takes time and the workability is poor.

The present invention has been made based on the above circumstances, and the object of the present invention is to save space and improve wiring workability in a wiring connecting portion that is provided in an indoor unit and connects a power line and a communication line. An object of the present invention is to provide an air conditioner that can be improved.

In order to satisfy the above object, the air conditioner of the present invention is composed of an indoor unit and an outdoor unit, the indoor unit and the outdoor unit are connected by a refrigerant pipe, and the indoor unit has a wiring connection portion. The wiring connection part is provided with a power line terminal block to which the power line is connected on the upper front side, and a communication line terminal block to which the communication line is connected on the lower back side, and includes a clamp part. The clamp base covers at least a part of the communication line and the communication line terminal block, and fixes the power line connected to the power line terminal block.

FIG. 1 is an external perspective view of an indoor unit constituting an air conditioner according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of a wiring connection portion attached to the air conditioner. FIG. 3 is a diagram illustrating a connection structure of remote control communication lines in the same wiring connection portion. FIG. 4 is a diagram showing another connection structure of the remote control communication line in the same wiring connection portion. FIG. 5 is a diagram showing a connection structure of power supply lines in the same wiring connection portion. FIG. 6 is a diagram showing wiring connections of the entire air conditioning apparatus. FIG. 7 is a diagram showing another connection structure of the power supply line in the same wiring connection portion. FIG. 8 is a diagram showing wiring connections of another entire air conditioning apparatus according to the embodiment. FIG. 9 is a diagram showing a connection structure of power supply lines in the wiring connection portion according to FIG. FIG. 10 is a diagram showing another connection structure of the power supply lines in the wiring connection portion according to FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a so-called wall-mounted indoor unit X that is attached to the wall surface of an air-conditioned room. The indoor unit X and the outdoor unit constitute an air conditioner.

FIG. 1 shows a state in which a suction grill 2 provided on the front surface of the housing 1 is opened. Cover Z. In other words, the indoor heat exchanger and the wiring connection portion Z are juxtaposed on the front surface of the housing 1 and opened and closed by the suction grill 2.

A grill is fitted into the upper part of the housing 1, and an upper suction port 3 that is always open is provided. Here, the suction grill 2 is connected to an opening / closing mechanism, and the opening / closing mechanism is activated when the air-conditioning operation is started, and the suction grill 2 moves so as to leave a gap with the front surface of the housing 1. Therefore, room air is sucked through these gaps.

A blow-out port is provided at the bottom of the housing 1. A louver composed of a plurality of blades is provided at the outlet, and the rotation angle is set according to the type of air conditioning operation such as cooling operation and heating operation. A refrigerant pipe, a power supply line, and a communication line (not shown) are extended from the back side of the housing 1.

The refrigerant pipe is connected to the outdoor unit Y, and the power line is connected to an indoor power outlet, the outdoor unit Y, or another indoor unit or a switching unit in the case of a multi-type equipped with a plurality of indoor units.

The communication line is connected to the remote control provided in the indoor unit, the control unit of the outdoor unit Y, or the remote control of the central control room in the case of multi-type.

Next, the wiring connection part Z will be described in detail.

FIG. 2 is an exploded perspective view of the wiring connection portion Z. FIG.

The wiring connection portion Z is attached to the front side of the electrical component box 4 disposed on the side portion of the indoor heat exchanger. That is, the wiring connection part Z and the electrical component box 4 are arranged back and forth at the side of the indoor heat exchanger. The electrical component box 4 is detachable from the housing 1.

The wiring connection part Z is composed of a connection part main body 5, a wiring cover 6 and a clamp base 7. FIG. 2 shows the clamp base 7 removed from the connection body 5 and the wiring cover 6 removed.

The connection part body 5 has a rectangular dish shape with an open front surface and is attached to the front side of the electrical component box 4. A wiring cover 6 having substantially the same shape as the connection portion main body 5 is detachably fitted to the peripheral edge portion of the connection portion main body 5. The clamp base 7 is detachably attached to the connection portion main body 5 as will be described later, and is accommodated between the connection portion main body 5 and the wiring cover 6.

A first boss portion 8 provided with a mounting hole along the axial direction protrudes from the connection portion main body 5 at a substantially central portion in the vertical direction in the drawing and on the right side in the horizontal direction in the drawing. Furthermore, the 2nd boss | hub part 9 provided with the screw hole is protruded in the lower part side of the 1st boss | hub part 8 along the axial direction.

On the other hand, the clamp base 7 is provided with a hole 7a larger than the head diameter of the mounting screw 10a, and the mounting portion in which the screw portion of the mounting screw 10b is inserted in the vicinity of the hole 7a. A hole is provided.

A predetermined hole of the wiring cover 6 is provided with a mounting hole 6a through which a screw portion of the mounting screw 10a is inserted. The mounting hole 6 a provided in the wiring cover 6 is provided at a position facing the hole 7 a of the clamp base 7 and the first boss 8 of the connection body 5.

In order to attach the clamp base 7 to the connection portion main body 5, the screw portion of the attachment screw 10 b is inserted into and protruded from the attachment hole of the clamp base 7, and this screw portion is provided on the connection portion main body 5. This is possible by screwing into the 9 screw holes. In this state, the first boss portion 8 provided in the connection portion main body 5 is inserted into the hole portion 7 a of the clamp base 7.

Further, in order to attach the wiring cover 6 to the connection portion main body 5, the screw portion of the mounting screw 10 a is inserted into the mounting hole 6 a of the wiring cover 6, and this screw portion is provided in the connection portion main body 5. This is possible by screwing into the screw hole of the first boss 8 protruding from the portion 7a.

As described later, after completing the wiring work, the box-shaped wiring connection portion Z is assembled by attaching the wiring cover 6 to the connection portion main body 5. For example, if necessary, for example, maintenance work, the tool is inserted into the mounting hole 6a provided in the wiring cover 6 and the mounting screw 10a is removed. I can remove it.

Next, the connection body 5 will be described in detail. A power line terminal block 13 shown in an enlarged view in FIG. 2 is provided on the upper front side, and a communication line line is provided on the lower back side of the power line terminal block 13. A terminal block 14 is provided. Further, a clamp base mounting portion 15 is provided on the lower side of the communication line terminal block 14, and a ground terminal portion 16 is provided on the lower side.

The power line terminal block 13, the communication line terminal block 14, the clamp base mounting portion 15 and the ground terminal portion 16 are all exposed to the front opening of the connection portion main body 5. In other words, if the wiring cover 6 is removed from the connection portion body 5, the power line terminal block 13, the communication line terminal block 14, and the clamp base mounting portion 15 can be easily operated.

The power line terminal block 13 is inclined obliquely so that the upper end is on the back side and the lower end is on the front side, and a name plate 18 is provided at a substantially middle portion in the vertical direction. On the nameplate 18, characters such as R (L) and S (N) are drawn side by side. Two screw terminal portions 19 are provided side by side at the lower part of the nameplate 18, and two faston terminal portions 20 are provided at the upper part of the nameplate 18 side by side.

The communication line terminal block 14 is inclined obliquely so that the upper end is the back side and the lower end is the front side, and four terminal covers 21 are provided side by side in the left-right width direction. The state where the terminal cover 21 is removed is shown in FIG.

A name plate 22 on which characters such as U1, U2, A, and B are drawn side by side is provided in a substantially middle portion of the communication line terminal block 14 in the vertical direction. Four screw terminal parts 23 are provided in the lower part of the nameplate 22 side by side, and four terminal parts 24 to which the ends of the wiring cords extending from the electric component box 4 are connected are arranged in the left and right part in the upper part. Provided.

As shown in FIG. 2 again, the clamp base mounting portion 15 is provided with the first boss portion 8 and the second boss portion 9 described above, and a cord band 25 is attached thereto. The cord band 25 is formed by folding back a horizontally long band-like band, and the folded end portions are overlapped with each other and attached to the clamp base attaching portion 15 via an attaching screw.

Therefore, by inserting the communication line into the folded code band 25, a large positional deviation of the communication line can be regulated.

Here, two clamps 26 are attached to the clamp base 7. Each clamp tool 26 is formed of a single piece that is longer in the left-right width direction than in the vertical direction, and is provided with a bulging portion 26a that bulges to the near side along the vertical direction at the center in the width direction. The bulging portion 26a is formed in a semicircular shape with a radius of curvature that allows the power line and the communication line to be fitted.

A hole through which the mounting screw 27 is inserted is provided on both sides of the clamp 26 in the left-right width direction. The screw portion of the mounting screw 27 protrudes from the back surface of the clamp tool 26 and is screwed into a screw hole provided at a predetermined portion of the clamp base 7.

Next, the actual wiring connection structure for the wiring connection part Z will be described.

For example, the present invention is applied to a so-called multi-type air conditioner in which a plurality of indoor units X are connected to a single outdoor unit Y as shown in FIG. 6 via a refrigerant pipe and a communication line. Here, each indoor unit X is provided with a valve (not shown) capable of adjusting the refrigerant flow rate, and operation / stop / temperature setting / air volume setting can be performed for each indoor unit X.

First, the connection unit body 5 is attached to the front surface of the electrical component box 4, and the clamp base 7 is removed together with the wiring cover 6 from the connection unit body 5. Therefore, the 1st boss | hub part 8, the 2nd boss | hub part 9, the cord band 25, the ground terminal part 16, etc. in the clamp base attaching part 15 are exposed.

In this state, as shown in FIG. 3, the cords extended from the electrical component box 4 are for the communication line with the faston terminal portion 20 and the terminal cover 21 removed from the nameplate 18 of the power supply terminal block 13. The nameplate 22 of the terminal block 14 is connected to the upper terminal portion 24.

Insert the internal / external crossover cable (communication line) C1 extended from the indoor unit X connected to the outdoor unit Y or the indoor unit X with the internal / external crossover cable (communication line) through the cord band 25, peel off this end covering, One is connected to a screw terminal portion 23 labeled “U1”. Then, the other one is connected to the screw terminal portion 23 described as “U2”.

Next, as shown in FIG. 4, the communication line C <b> 2 connected to the remote controller of the air-conditioned room to which the indoor unit X is attached is inserted through the cord band 25. The end cover of the communication line C2 is peeled off, one is connected to the screw terminal portion 23 described as “A”, and the other is connected to the screw terminal portion 23 connected to “B”.

Then, the clamp base 7 is attached to the connection portion main body 5 by screwing the screw portion of the attachment screw 10 b into the screw hole of the second boss portion 9 through the attachment hole of the clamp base 7. The clamp base 7 covers a part of the communication line terminal block 14, and presses and fixes the inner / outer connection line (communication line) C <b> 1, the communication line C <b> 2, and the cord band 25 to the connection unit body 5.

The screw 27 for attaching the clamp tool 26 is loosened in advance, and a gap is formed between the clamp base 7 and the clamp tool 26. As shown in FIG. 5, one end portion of the power supply line C3 is inserted into the gap and fitted into the bulging portion 26a of the clamp tool 26, and the covering of the end portion is peeled off to the screw terminal portion 19 of the power supply terminal block 13. Connecting. The ground wire is connected to the ground terminal portion 16.

Then, the mounting screw 27 inserted through the clamp tool 26 is tightened, and the clamp tool 26 is fastened to the clamp base 7. The power supply line C3 is pressed against the clamp base 7 by the clamp tool 26 and fixed. The plug provided at the other end of the power supply line C3 is electrically connected to an outlet (200V) provided in the air-conditioned room.

This completes the actual wiring connection work. After that, the wiring connection portion Z is assembled by fitting the wiring cover 6 into the connection portion main body 5. If the same operation is performed for the indoor unit X provided in the other air-conditioned rooms, the operation of the multi-type air conditioner composed of a plurality of indoor units X for one outdoor unit Y can be performed. It becomes possible.

With the remote control of the air-conditioned room connected via the wiring connection Z and the communication line C2, the operation control of the air conditioning operation start and end of the indoor unit X, the switching between the cooling operation and the heating operation, the setting of the room temperature, etc. Take control.

In this way, the power line terminal block 13 is provided on the upper front side of the connection unit body 5 to connect the power line C3, and the communication line terminal block 14 is provided on the lower back side to connect the communication lines C1 and C2. Therefore, when any one of the power supply line C3 and the communication lines C1 and C2 is connected, the other terminal block or line is not obstructed, and workability can be improved.

Since the wiring connection portion Z itself, the power line terminal block 13 and the communication line terminal block 14 are arranged up and down, the width direction on the left and right is not expanded. In addition, since the power line terminal block 13 is provided on the front side and the communication line terminal block 14 is provided on the back side, it is possible to suppress the vertical height direction. As a result, the wiring connection portion Z can be downsized.

The indoor unit X is a wall-mounted type that is attached to the wall surface of the air-conditioned room, and the wiring connection portion Z is provided on the front surface of the electrical component box 4 housed in one side of the indoor unit X. In this case, space saving by the wiring connecting portion Z and improvement in wiring connecting workability can be obtained.

Further, since the indoor unit constitutes at least one of the plurality of indoor units respectively attached to the plurality of air-conditioned rooms, in the multi-type air conditioner, at least one indoor unit X Thus, the space saving by the wire connecting portion Z provided in the case and the improvement of the wire connecting workability can be obtained.

Further, there is an air conditioner configured with a plurality of indoor units and a plurality of switching units for one outdoor unit Y. This type of air conditioner has a cooling operation in which all indoor units are cooled by a switching operation of the switching unit, a heating operation in which all indoor units are heated, and a cooling and heating operation in each indoor unit. Simultaneous operation is possible.

The air conditioner is described in detail in the specification of a multi-type air conditioner (International Publication Number: W02006 / 0038860) filed by the present applicant.

In this case, the connection of the internal / external connection line (communication line) C1 and the remote control communication line C2 to the communication line terminal block 14 is not different from that shown in FIG. However, the connection to the power line terminal block 13 is as shown in FIG.

The connection of the power supply line C3 connected to the outlet of the air-conditioned room to the screw terminal portion 19 of the power supply terminal block 13 remains unchanged. Then, the power line C4 extending from the switching unit of the air conditioner is inserted into the gap between the other clamp tool 26 and the clamp base 7, and the terminal provided at the end is the faston terminal of the power line terminal block 13 Connect to the unit 20.

The middle part of the power line C4 is fitted into the bulging part 26a of the clamp tool 26, and the clamp tool 26 is fastened with a mounting screw 27, thereby fixing the power line C4 extending from the switching unit and connecting the inside and outside wires. (Communication line) C1 and communication line C2 are fixed. The air-conditioning operation is performed as described above, and the above-described effects are achieved as the wiring connection portion Z.

In the above air conditioner, it has been described that the power line C3 shown in FIG. 5 is connected to the outlet of the air-conditioned room. However, the present invention is not limited to this. When the outdoor unit Y is connected to a power source and the power is taken into the indoor unit X via the outdoor unit Y, the power line is connected to the outdoor unit Y.

In addition, when the power is taken in via the indoor unit X supplied with power from the outdoor unit Y, it is connected to the indoor unit X.

The air conditioner shown in FIG. 8 is a type constituted by one outdoor unit Y connected to a three-phase outdoor power source and two indoor units X1 and X2 to which power is supplied from the outdoor unit Y. It is an air conditioner.

In this case, instead of the power supply terminal block 13 shown in FIG. 2, as shown in FIG. 9, three screw terminal portions 19 are provided side by side in the center of the left and right, and similarly three faston terminal portions 20 are provided. The provided power supply terminal block 30 is used.

In the indoor unit X1, as shown also in FIG. 10, an internal / external connecting line C5 that also serves as a power line and a communication line extending from the outdoor unit Y is connected to the screw terminal portion 19 of the power terminal block 30 and connected to the remote controller. The communication line C2 is connected to the terminal portions A and B of the communication line terminal block 14.

Here, the two indoor units X are not provided with a valve capable of adjusting the flow rate, and the operation / stop / temperature adjustment / air flow adjustment for the two indoor units X1, X2 are simultaneously operated by one remote controller. .

Further, since the power supply line to the indoor unit X2 is supplied from the outdoor unit Y via the indoor unit X1, the power supply line C6 extending from the power supply terminal block 30 of the indoor unit X1 is connected to the power supply terminal block 30 of the indoor unit X2. Are connected to the screw terminal portion 19. Similarly, the communication line C2 extends from the indoor unit X1 and is connected to the terminal portions A and B of the communication line terminal block 14 of the indoor unit X2.

Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.

According to the present invention, it is possible to save the space and improve the wiring workability in the wiring connecting portion that connects the power cord and the communication line.

Claims

In an air conditioner composed of an indoor unit and an outdoor unit connected to each other by refrigerant piping,
The indoor unit includes a wiring connection portion,
This wiring connection is
A power supply terminal block provided on the upper front side to which a power supply line is connected;
A communication line terminal block provided on the lower back side to which a communication line is connected;
A clamp base that includes at least a part of the communication line and the communication line terminal block, and a clamp base that fixes the power line connected to the power line terminal block;
An air conditioner comprising:
The indoor unit is a wall-mounted type that is attached to the wall surface of the air-conditioned room,
The air conditioner according to claim 1, wherein the wiring connection portion is provided on a front surface of an electric component box housed in one side portion of the indoor unit.
The air conditioner according to claim 2, wherein the indoor unit constitutes at least one of a plurality of indoor units respectively attached to a plurality of air-conditioned rooms.