JP2006125779A - Indoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for an air conditioner allowing realization of miniaturization of main body casing size by reducing a duct space of a main body casing, and to prevent reduction of workability in production work and installation work of the indoor unit for the air conditioner accompanying the miniaturization realization. <P>SOLUTION: When all of refrigerant pipes 31, ventilation ducts 32 and a connection wiring line 33 are lead out from the vicinity of one end part of both side end parts of the main casing 10 of the indoor unit 1, a heat exchanger 16, a ventilation fan 17 and an electric equipment box 18 are disposed such that at most two of them pass through the duct space 21. A connection terminal connecting the connection wiring line 33 is provided near each of both the side end parts of the main body casing 10. A control board inside the electric equipment box 18 is disposed such that a component mounting face thereof is directed to a center part of the indoor unit 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention reduces the size of the main body casing by disposing each component device such as a heat exchanger, a ventilation fan, and a control unit housed in the main body casing of the indoor unit of the air conditioner at a suitable position. In particular, the present invention relates to an indoor unit of an air conditioner that can reduce the size of the main body casing by reducing the duct space through which various pipes and wirings connected to each component device are led. It is.

In a separation-type air conditioner configured to include an indoor unit and an outdoor unit that are separately provided indoors and outdoors, the refrigerant is circulated through a refrigerant pipe that connects the indoor unit and the outdoor unit, so that the indoor unit Air conditioning is performed.
At this time, the refrigerant pipe is inserted through an opening formed in a partition wall that separates the interior and the exterior, is piped over the interior and the exterior, and is connected to a heat exchanger and the like of each of the indoor unit and the outdoor unit. Further, not only the refrigerant pipe but also connection wiring such as control wiring and power transmission wiring are wired between the indoor unit and the outdoor unit, and the connection wiring is connected to each control unit of the indoor unit and the outdoor unit. (Also called an electrical box). The control unit includes a control board on which a control circuit for controlling the indoor unit and the outdoor unit is formed, a relay terminal for relaying an electrical connection with the control unit (that is, a connection destination of the connection wiring), and the like. It is comprised and comprises.
In recent years, many air conditioners having a ventilation function in addition to an air conditioning function have been provided. Such an air conditioner discharges room air to the outside through a ventilation duct (ventilation pipe, hose, etc.) communicating with the inside and outside of the room by driving an exhaust fan disposed in the main body casing. (See Patent Document 1). At this time, the ventilation duct is connected to the indoor unit and the outdoor unit through the same route as the refrigerant pipe and the connection wiring. In some cases, the outside of the ventilation duct is not connected to an outdoor unit, and the air outlet is simply opened to the outside.

By the way, the refrigerant pipe, the connection wiring, the ventilation duct and the like (hereinafter referred to as connection means together) inserted into the room through the opening of the partition wall inside and outside the room and connected to the indoor unit, It is desirable not to expose it indoors. Therefore, the indoor unit is installed in a state where any one of the insertion openings formed in the vicinity of the left and right side end portions on the back of the main body casing is aligned with the opening of the partition wall. The connection means is connected between the indoor unit and the outdoor unit through the opening and the insertion port. Note that many of the conventional indoor units of an air conditioner have each connection destination (a connection portion of a heat exchanger, a connection terminal, a ventilation fan, etc.) of the connection means connected to an insertion port (hereinafter, referred to as a right end portion) in the main body casing. It is arranged in the vicinity of the right insertion port), and such arrangement is a standard specification. Therefore, in order to shorten the piping / wiring distance of the connecting means from the opening of the partition to each connection destination as much as possible, the indoor unit is installed so that the right insertion port is aligned with the opening of the partition. . That is, the right insertion port is frequently used as the insertion port of the connection means.
Japanese Patent Laid-Open No. 2002-5498

However, as described above, the right insertion port is not always used. For example, in accordance with user's preference or due to the wall surface structure of the partition wall where the indoor unit is installed, the vicinity of the left end of the indoor unit It is also assumed that the indoor unit is installed in a state where the insertion port (hereinafter referred to as the left insertion port) is aligned with the opening of the partition wall. In this case, the connection means inserted from the left insertion port needs to be piped and wired to each connection destination provided near the right end. Therefore, a duct space is provided in the main body housing of the indoor unit so that all of the connecting means can be led to the connecting portions disposed in the vicinity of the right insertion port.
In such a conventional configuration, as described above, a duct space capable of storing all of the connection means must be secured in the main body casing of the indoor unit, and thus the size reduction of the main body casing is impeded. There is a problem. Of course, if the diameter of each of the connecting means is limited to reduce the overall diameter of the connecting means, the duct space for storing the connecting means can be saved and the size of the main body housing can be reduced. However, if the diameter of the connecting means is limited, another problem of reducing the cooling / heating performance and ventilation performance arises, making it impossible to fully demonstrate the cooling / heating performance and ventilation performance. Lack.
On the other hand, at least two of the refrigerant pipe, the ventilation duct, and the connection wiring are connected to the heat exchanger, the ventilation fan, and the control through the duct space from the one insertion port. It is improved by arranging the heat exchanger, the ventilation fan, and the control unit housed in the housing of the indoor unit so as to be guided to the unit. That is, by arranging in this way, the duct space should be large enough to store at least any two of the refrigerant pipe, the connection wiring, and the ventilation duct. become. As a result, the duct space can be saved and the size of the main body housing can be reduced. Details of this point will be described later.

  However, by arranging the heat exchanger, the ventilation fan, and the control unit as described above, the above problems can be improved and the size of the main body casing can be reduced, but another problem may occur. is there. That is a problem that may occur when the control unit performs an installation operation of an indoor unit disposed in the vicinity of the left end in the main body casing. For example, when installing an indoor unit in which the control unit is arranged at the left end, in the installation work, the indoor unit is replaced with a conventional general indoor unit (indoor unit in which components are gathered at the right end) Similarly, assuming that the relay terminal of the control unit is disposed in the vicinity of the right insertion port of the main body housing, a connection wiring having a length that can be connected to the relay terminal from the right insertion port is provided. When prepared, the relay terminal of the control unit is actually arranged in the vicinity of the left insertion port, so that the prepared connection wiring may not reach the relay terminal. In this case, it is necessary to measure the dimensions again and prepare a new connection wiring, or to add and extend a new wire to the connection wiring. These operations are unnecessary in nature and cause a delay in the installation work time.

In addition, when the control unit is arranged in the vicinity of the left insertion port, another problem may occur. The conventional control unit designed and manufactured on the assumption that it is disposed in the vicinity of the right end of the main body casing is used as a control unit disposed in the vicinity of the left end of the main body casing. This is a problem that can occur.
In general, on the production line of an indoor unit in which a control unit is disposed in the vicinity of the right end in the main body casing, electronic components are mounted on a control board provided on the control unit, and a connector is mounted on the control board. The standing position of the worker who performs work such as wiring connection to is set at the center position of the indoor unit so that a wide range of work can be performed without moving with respect to the indoor unit. At this time, conventionally, the control board is mounted as close as possible to the right end side in the control unit so that mounting parts such as connection connectors and silk printing can be visually recognized from the standing position, and mounting of mounting parts. The surface is disposed toward the center of the indoor unit.
Therefore, if such a conventional control unit is diverted to be disposed in the vicinity of the left end of the main body casing, the mounting surface of the control board cannot be seen from the standing position. It is necessary to move to the left end of the work, and the workability is lowered.
Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioner that can reduce the size of the main body casing by reducing the duct space of the main body casing. An object of the present invention is to provide an indoor unit and to prevent deterioration in workability in installation work and production work of the indoor unit of the air conditioner that occurs while realizing miniaturization.

In order to achieve the above object, the present invention provides a heat exchanger for exchanging heat between refrigerant supplied from an outdoor unit through a refrigerant return path and indoor air, and indoor air through the ventilation path. An air conditioner comprising: a ventilating fan that discharges; a control unit that is electrically connected to the outdoor unit via connection wiring; and a main body housing that houses the heat exchanger, the ventilation fan, and the control unit. When the refrigerant recirculation path, the ventilation path, and the connection wiring are all derived from the vicinity of one of both end portions of the main body casing. At least two of the refrigerant recirculation path, the ventilation path, and the connection wiring are led to the heat exchanger, the ventilation fan, and the control unit through a duct space provided in the main body casing. In addition, Serial heat exchanger, the ventilating fan and the control unit in which is disposed.
Therefore, in the main body housing of the indoor unit of the air conditioner, it is only necessary to secure the duct space capable of simultaneously storing at least any two of the refrigerant circulation path, the ventilation path, and the connection wiring. A reduction in the size of the main body housing can be realized. That is, unlike the prior art, it is not necessary to secure a size that can store all of the refrigerant recirculation path, the ventilation path, and the connection wiring at the same time, so that the duct space can be reduced.
In particular, since the diameter of the refrigerant recirculation path and the ventilation path are relatively large among various pipes / wirings that pass through the duct space, they greatly affect the size of the duct space. Therefore, from the viewpoint of saving the duct space, the heat exchanger and the ventilation fan may be arranged so that the refrigerant circulation path and the ventilation path do not pass through the duct space at the same time. More desirable. Specifically, it is conceivable that the connection portion of the heat exchanger to which the refrigerant recirculation path is connected, the ventilation fan, and the control unit are separately disposed in the vicinity of both end portions of the main body housing. It is done.
In addition, when a drain hose or other piping / wiring for discharging drain water to the outside is passed through the duct space, the sum of the diameters of the piping / wiring passing simultaneously through the duct space is as uniform as possible. It is preferable to arrange each component to which the piping / wiring is connected.

On the other hand, for example, in order to prevent a delay in the installation time of the indoor unit, which occurs when the control unit is disposed in the vicinity of the left end portion in the main body casing, the control unit is provided at both end portions of the main body casing. Regardless of which one is provided, it is desirable that a relay terminal for relaying the connection wiring connected to the control unit is provided in the vicinity of each side end portion.
As a result, it is only necessary to connect the connection wiring to any one of the relay terminals provided in the vicinity of both end portions of the main body casing, and to connect the relay terminal to the control unit. Even if the length is estimated incorrectly, it is not necessary to prepare a new connection wiring between the indoor unit and the outdoor unit, so that the workability can be reduced and the waste of the wire can be prevented.
Further, in order to reduce the work load at the installation location of the indoor unit of the air conditioner, for example, when the indoor unit is manufactured, each of the relay terminals may be electrically connected to the control unit in advance. Conceivable.
Moreover, it is desirable that the control board on which the electronic component is mounted on one side is arranged with the one side facing the central part of the main body casing. Further, in order to prevent the side surface of the control unit from hindering the visual recognition of the one surface by an operator, the control board is arranged on the side surface opposite to the central portion side of the main body housing in the control unit. It is suitable to keep. That is, it is desirable that the control unit is configured so that the one surface can be visually recognized from the central portion of the indoor unit of the air conditioner. As a result, an operator standing at the center position of the indoor unit in the production line for producing the indoor unit of the air conditioner does not move from the standing position regardless of the position of the control unit. Since the wiring work and various production processes related to the control board can be performed while visually recognizing the mounting surface of the electronic component on the board, a reduction in workability can be prevented.

  According to the present invention, each component device such as a heat exchanger, a ventilation fan, and a control unit housed in the main body casing of the indoor unit of the air conditioner can preferably reduce the duct space of the main body casing. Therefore, the main body casing size can be reduced. In addition, the configuration of the indoor unit of the air conditioner can prevent a reduction in workability in the installation work and production work of the indoor unit of the air conditioner that occurs while realizing the downsizing.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
The present embodiment is configured to include an indoor unit and an outdoor unit that are separately arranged indoors and outdoors, and air that cools and heats the room by circulating a refrigerant between the indoor unit and the outdoor unit. It is about a harmony machine.
1 is a perspective view of the indoor unit 1 of the air conditioner X according to the embodiment of the present invention, FIG. 2 is a perspective view of the indoor unit 1 with the open panel 12 and the front panel 8 removed, and FIG. 4A is a side cross-sectional view of the indoor unit 1, FIG. 4A is a diagram illustrating a piping / wiring path when the insertion port 20a is used, and FIG. 4B is a piping / wiring path when the insertion port 20b is used. FIG. 5 is a view showing a state in which the air conditioner X is installed, FIG. 6 is a rear view of the indoor unit 1, and FIG. 7 is a diagram illustrating an electrical box 18 disposed in the indoor unit 1. It is the perspective view which a part omitted.
First, the external configuration of the indoor unit 1 of the air conditioner X according to the embodiment of the present invention will be described with reference to FIG.
As shown in the perspective view of FIG. 1, the exterior of the indoor unit 1 is configured by a main body housing 10 including a front panel 8, a cabinet 11, an open panel 12, a drain pan 13, and the like. A suction port 14 for sucking indoor air is formed in the upper part of the main body casing 10, and a blower outlet 15 for blowing heat exchanged air into the room is formed in the lower part.

Next, the internal configuration of the indoor unit 1 will be described with reference to FIGS.
As shown in FIGS. 2 and 3, the main body housing 10 of the indoor unit 1 includes a heat exchanger 16 for exchanging heat between the refrigerant and air, a ventilation fan 17 for discharging indoor air to the outside, and In the indoor unit 1, an electrical box 18 (corresponding to the control unit) that houses a circuit board for performing various controls, a power supply device (power supply circuit, etc.) and the like is disposed. Further, although not described in detail, a blower 23 which is a component of the indoor unit 1 and a dust filter (not shown) are appropriately disposed in the main body casing 10. In the present embodiment, the ventilation fan 17 and the electrical box 18 will be described as being integrally configured as shown in the figure, but the present invention is not limited to this, and may be configured separately. There is no problem.
Further, as shown in FIG. 3, the main body housing 10 includes a refrigerant pipe 31, a ventilation duct 32, and a connection wiring 33 (see FIG. 3) between the installation plate 9 of the main body housing 10 and the cabinet 11. A duct space 21 for piping and wiring is provided at each of the connection destinations without exposing them. The duct space 21 has a size that can guide at least any two of the refrigerant pipe 31, the ventilation duct 32, and the connection wiring 33 to each connection destination. The installation plate 9 is fixed to the partition wall 4 (see FIG. 3) to which the main body housing 10 of the indoor unit 1 is attached, and is configured to be detachable from the main body housing 10. Is attached to the partition wall 4 by being mounted on the mounting plate 9.

  Among the constituent elements of the indoor unit 1, the heat exchanger 16 is, as shown in FIGS. 4 (a) and 4 (b), similar to the conventionally known indoor unit, the heat exchanger 16 and a refrigerant pipe to be described later. The connecting portion 16a with the main body housing 10 is arranged in a state of being located in the vicinity of the right end portion in a plan view of the main body housing 10. Further, unlike the conventionally known indoor unit, the ventilation fan 17 and the electrical box 18 are arranged so as to be positioned in the vicinity of the left end portion in plan view of the main body housing 10 (see FIG. 2). In addition, since components other than these are arranged at positions similar to those of conventionally known indoor units, description thereof will be omitted.

Here, various pipes and wirings connected to the indoor unit 1 will be described with reference to FIG. FIG. 5 shows a state in which the air conditioner X is installed, that is, the indoor unit 1 is attached to the partition wall 4 in the room, and the outdoor unit 2 is placed at a predetermined position outside the room. It is a figure which shows the state 2 connected mutually by various piping and wiring.
As shown in FIG. 5, the indoor unit 1 and the outdoor unit 2 arranged with the partition wall 4 being separated from the indoor unit 1 are either one of both end portions of the main body housing 10 of the indoor unit 1. Are connected by a refrigerant pipe 31, a ventilation duct 32, and a connection wiring 33, which are led out from the vicinity of the end of the pipe and are inserted into the opening 5 formed in the partition wall 4. The exposed portions of these various pipes / wirings are gathered and protected by the protective pipe 3. The outdoor unit 2 includes a heat exchanger, a compressor, an expander, a blower fan, an electrical box, etc. (not shown), and does not have a configuration different from a conventionally known outdoor unit. Absent. Therefore, the description is omitted here.
The refrigerant pipe 31 is composed of two pipes, a thick pipe and a thin pipe, that return (circulate) the refrigerant between the heat exchanger 16 of the indoor unit 1 and the heat exchanger of the outdoor unit 2. It is a route.
The ventilation duct 32 is a ventilation path that discharges indoor air sucked by the ventilation fan 17 to the outside, and one end of the ventilation duct 32 is connected to the discharge side of the ventilation fan 17 of the indoor unit 1 and the other end. It is connected to the outdoor unit 2. Note that the other end side of the ventilation duct 32 connected to the outdoor unit 2 is not necessarily connected to the outdoor unit 2 and may be simply opened to the outside.
The connection wiring 33 is a connection wiring for electrically connecting the indoor unit 1 and the outdoor unit. Specifically, power is supplied from the electrical box 18 of the indoor unit 1 to the electrical box of the outdoor unit 2. Examples thereof include power transmission wiring for supply and control wiring for transmitting a control signal.

  The refrigerant pipe 31, the ventilation duct 32, and the connection wiring 33 are insertion holes 20 a or 20 b (20 b) formed in the vicinity of both side ends of the installation plate 9 to which the main body housing 10 of the indoor unit 1 is attached. 6) and connected to the heat exchanger 16, the ventilation fan 17, and the electrical box 18 in the indoor unit 1. Here, as shown in the rear view of FIG. 6, the insertion opening 20 a is formed in the vicinity of the left end portion of the installation plate 9 as viewed from the partition wall 4 (right end portion as viewed from the front). The insertion opening 20b is formed in the vicinity of the right end of the installation plate 9 as viewed from the partition wall 4 (left end when viewed from the front).

Here, referring to FIG. 4A, the refrigerant pipe 31, the ventilation duct 32, and the connection wiring 33 are led out from the vicinity of the right end of the main body housing 10, and the right end of the installation plate 9 is connected. The piping / wiring path when inserted through the insertion opening 20a (see FIG. 6) formed in the vicinity of the portion will be described. In this case, the connecting portion 16a of the heat exchanger 16 to which the refrigerant pipe 31 is connected is disposed in the vicinity of the right end of the main body casing 10, that is, in the vicinity of the insertion port 20a. 31 does not pass through the duct space 21.
On the other hand, since the ventilation fan 17 and the electrical box 18 are disposed in the vicinity of the left end portion of the main body housing 10, the ventilation duct 32 and the connection wiring 33 pass through the duct space 21 and the main body. Piping and wiring are connected to the ventilation fan 17 and the electrical box 18 disposed in the vicinity of the left end of the housing 10.

Next, referring to FIG. 4 (b), the refrigerant pipe 31, the ventilation duct 32, and the connection wiring 33 are led out from the vicinity of the left end portion of the main body housing 10, and the left end of the installation plate 9. A piping / wiring path in the case of being inserted through the insertion port 20b (see FIG. 6) formed in the vicinity of the portion will be described.
In this case, the ventilation fan 17 and the electrical box 18 are disposed in the vicinity of the left end of the main body casing 10, that is, in the vicinity of the insertion port 20b. It does not pass through the duct space 21.
On the other hand, since the connection portion 16a of the heat exchanger 16 is disposed in the vicinity of the right end portion of the main body casing 10, the refrigerant pipe 31 passes through the duct space 21 and the right side of the main body casing 10. A pipe is connected to the connecting portion 16a in the vicinity of the end.

That is, in the duct space 21 of the main body casing 10 of the indoor unit 1, all of the refrigerant pipe 31, the ventilation duct 32, and the connection wiring 33 are in the vicinity of any one of both end portions of the main body casing 10. Depending on whether it is derived from the above, any one of the refrigerant pipe 31, the ventilation duct 32 and the connection wiring 33 will be passed, and they will not all be passed simultaneously. Therefore, the duct space 21 that can store either the refrigerant pipe 31, the ventilation duct 32, or the connection wiring 33, whichever has a larger diameter, may be secured. Miniaturization can be realized.
In particular, in the present embodiment, among the various pipes / wirings that pass through the duct space 21, the refrigerant pipe 31 and the ventilation duct 32 having a relatively large diameter can be simultaneously passed through the duct space 21. Since the heat exchanger 16, the ventilation fan 17, and the electrical box 18 are separately disposed in the vicinity of both end portions of the main body housing 10, the space size of the duct space 21 is reduced as much as possible. It can be saved.
Of course, the arrangement of the components is not limited to that shown in the present embodiment, and can be changed as appropriate. That is, when all of the refrigerant pipe 31, the ventilation duct 32, and the connection wiring 33 are led out from the vicinity of any one of both end portions of the main body housing 10, at most either However, what is necessary is just to arrange | position the said heat exchanger 16, the said ventilation fan 17, and the said electrical equipment box 18 so that the said duct space 21 may be passed. For example, in the case where the ventilation fan 17 and the electrical box 18 are separately configured, it is also possible to configure only one of them in the vicinity of the left end as an embodiment of the present invention.
When drain hoses for discharging drain water or other pipes / wirings are passed through the duct space 21, these pipes / wirings are provided at either end of the body housing 10. The components connected to the pipes / wirings are arranged so that the sum of the diameters of the pipes / wirings simultaneously passing through the duct space 21 is as uniform as possible even when they are derived from the vicinity of the end. do it.

Here, according to the embodiment of the present invention, it is possible to prevent deterioration in workability in the installation work of the indoor unit 1 that occurs when the electrical box 18 is disposed in the vicinity of the left end of the main body housing 10. The configuration of the indoor unit 1 will be described. As described above, this workability deterioration is caused when the refrigerant pipe 31, the ventilation duct 32, and the connection wiring 33 are all led out from the vicinity of the right end of the main body casing 10, that is, the installation plate 9 When the insertion port 20a is used, the installation operator does not notice that the electrical box 18 is disposed near the left end different from the conventional one, and erroneously requires the required length (right end This occurs when the connection wiring 33 is prepared by estimating the length to the vicinity (of course, the left and right sides may be reversed).
In the indoor unit 1 according to the present embodiment, as shown in FIG. 2, relay terminals 19 a and 19 b that relay the electrical connection between the connection wiring 33 and the electrical box 18 are provided on the main body housing 10. It is arrange | positioned in the vicinity of each edge part, ie, the said insertion opening 20a, 20b vicinity. Note that the relay terminal 19a in the present embodiment is configured integrally with the electrical box 18, and is electrically connected in advance. Of course, the relay terminal 19a may be configured and arranged separately from the electrical box 18.
Therefore, even if the installation operator erroneously estimates the length to the vicinity of the right end and prepares the connection wiring 33, the installation worker connects the connection wiring 33 to the relay terminal 19b in the vicinity of the insertion port 20a, Thereafter, the relay terminal 19b may be electrically connected to the electrical box 18 or the relay terminal 19a. Thereby, it is not necessary to prepare a new wiring for connecting the indoor unit 1 and the outdoor unit 2, and workability can be prevented from being lowered and wire rods can be prevented from being lost.
Furthermore, in order to reduce the work burden at the installation destination of the indoor unit 1, for example, when the indoor unit 1 is manufactured, the relay terminal 19a and the relay terminal 19b electrically connected to the electrical box 18 are previously connected. It is also conceivable that the relay terminals 19a and 19b are electrically connected to the electrical box 18 respectively.
In addition, according to such a configuration, the connection wiring 33 is not passed through the duct space 21, so that the duct space 21 can be saved correspondingly.

Subsequently, referring to FIG. 7, the present invention can prevent deterioration in workability in the production operation of the indoor unit 1 that occurs when the electrical box 18 is disposed in the vicinity of the left end of the main body housing 10. The configuration of the indoor unit 1 according to the embodiment will be described (of course, the left and right can be reversed). Here, FIG. 7 is a perspective view in which the electrical box 18 disposed in the indoor unit 1 is partially omitted, and illustration of other components other than the control board 22 is omitted.
As shown in FIG. 7, the electrical box 18 includes a control board 22 on which electronic components 22a and the like are mounted. The control board 22 is arranged in parallel with a direction in which an operator who wants to operate the electrical box 18 faces the main body housing 10 of the indoor unit 1, and an electronic component 22a (for example, a connection connector) is mounted on the control board 22. In addition, a surface 22c (hereinafter referred to as a mounting surface) on which characters 22b (for example, the type of electronic component) are silk-printed is placed on the center side (the right side surface 11c side (see FIG. 2)) of the main body housing 10. It is arranged in the electrical box 18 in the state of being directed. In addition, the control board 22 is arranged on the side surface side opposite to the central side of the main body housing 10 in the electrical box 18 so that the side surface of the electrical box 18 does not interfere with the visual recognition of the mounting surface 22c. It is arranged on the left side surface 11b side (see FIG. 2).
Therefore, an operator standing at the center of the main body housing 10 in the production process of the indoor unit 1 does not move from the standing position while visually confirming the mounting surface 22c of the control board 22, Various production processes relating to the control board 22 can be performed, and deterioration of workability is prevented.
Of course, when the electrical box 18 is disposed in the vicinity of the right end of the main body casing 10, the control board 22 has the mounting surface 22 c facing the center side of the main body casing 10. What is necessary is just to arrange | position in the said electrical equipment box 18. FIG.
That is, the control board 22 places the mounting surface 22c on the central portion side of the main body housing 10 so that the worker can visually recognize the mounting surface 22c regardless of whether it is arranged on the right hand side or the left hand side of the worker. What is necessary is just to arrange | position in the state which faced. For example, the electrical box 18 and the electric box 18 can be changed so that the arrangement direction of the electric box 18 to the main body housing 10 can be changed, or the arrangement position and direction of the control board 22 to the electric box 18 can be changed. It is also conceivable to configure the control board 22.

The perspective view of the indoor unit 1 of the air conditioner X which concerns on embodiment of this invention. The perspective view of the indoor unit 1 which removed the open panel 12 and the front panel 8. FIG. FIG. 3 is a side sectional view of the indoor unit 1. (A) is a figure explaining the piping and wiring route when using the insertion port 20a, (b) is a diagram explaining the piping and wiring route when using the insertion port 20b. The figure which shows the state in which the air conditioner X was installed. The rear view of the indoor unit 1. FIG. The perspective view which abbreviate | omitted some electrical equipment boxes 18 arrange | positioned at the indoor unit 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Indoor unit 2 ... Outdoor unit 3 ... Protection pipe 4 ... Partition 5 ... Opening 8 ... Front panel 9 ... Installation board 10 ... Main body housing 11 ... Cabinet 11b ... Left side 11c ... Right side 12 ... Open Panel 13 ... Drain pan 14 ... Suction port 15 ... Air outlet 16 ... Heat exchanger 16a ... Connection part 17 ... Ventilation fan 18 ... Electrical box (control unit)
19a, 19b ... relay terminal 20a, 20b ... insertion port 21 ... duct space 22 ... control board 22a ... electronic component (connector etc.)
22b ... Silk-printed characters (types of electronic components, etc.)
22c ... Mounting surface 23 ... Blower 31 ... Refrigerant piping (refrigerant recirculation route)
32 ... Ventilation duct (ventilation route)
33 ... Connection wiring

Claims (6)

A heat exchanger for exchanging heat between the refrigerant supplied from the outdoor unit via the refrigerant return path and the indoor air;
A ventilation fan that exhausts room air to the outside through the ventilation path;
A control unit electrically connected to the outdoor unit via connection wiring;
A main body housing for accommodating the heat exchanger, the ventilation fan and the control unit,
An air conditioner indoor unit in which the main body housing is provided with a duct space for storing the refrigerant return path, the ventilation path, and the connection wiring,
When all of the refrigerant return path, the ventilation path, and the connection wiring are derived from the vicinity of one of both end parts of the main body casing, the refrigerant return path, the ventilation path, and the connection wiring The heat exchanger, the ventilation fan, and the control unit are arranged so that at least two of them are led to the heat exchanger, the ventilation fan, and the control unit through the duct space. An air conditioner indoor unit.   2. The air according to claim 1, wherein a connection portion of the heat exchanger to which the refrigerant circulation path is connected, the ventilation fan, and the control unit are separately disposed in the vicinity of both side end portions of the main body casing. The indoor unit of the harmony machine.   The indoor unit of an air conditioner according to any one of claims 1 and 2, wherein a relay terminal that relays the connection wiring connected to the control unit is provided in the vicinity of each of both end portions of the main body casing. .   The indoor unit of an air conditioner according to claim 3, wherein each of the relay terminals is electrically connected to the control unit. The control unit has a control board on which electronic components are mounted on one side;
The indoor unit of an air conditioner according to any one of claims 1 to 4, wherein the control board is arranged with the one surface facing the central portion of the main body casing. The control board is
The indoor unit of an air conditioner according to claim 5, wherein the indoor unit is disposed on a side surface opposite to a central portion side of the main body casing in the control unit.

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