阅读说明：本技术 空调机的室内机以及室内系统 (Indoor unit of air conditioner and indoor system ) 是由 木全笃 栗原诚 于 2018-02-23 设计创作，主要内容包括：空调机的室内机具有主体部,该主体部具备具有与多个扩展单元对应的控制端子的主基板。主基板与具有作为与控制端子相同规格的连接端子的至少一个扩展端子的扩展基板连接,并且经由扩展基板与至少一台扩展单元连接。(An indoor unit of an air conditioner includes a main body including a main substrate having control terminals corresponding to a plurality of extension units. The main board is connected to an extension board having at least one extension terminal as a connection terminal of the same specification as the control terminal, and is connected to at least one extension unit via the extension board.)

1. An indoor unit of an air conditioner, characterized in that,

has a main body part provided with a main substrate having control terminals corresponding to a plurality of extension units,

the main board is connected to an extension board having at least one extension terminal as a connection terminal of the same specification as the control terminal, and is connected to at least one of the extension units via the extension board.

2. An indoor unit of an air conditioner according to claim 1,

in the case where the extension substrate is provided to one of the extension units,

the main substrate is connected to the extension unit via the extension substrate by connecting the wiring extending from the extension substrate to the control terminal and connecting the wiring extending from the extension unit not having the extension substrate to the extension terminal.

3. An indoor unit of an air conditioner according to claim 1,

in the case where the extension substrate is provided in a plurality of the extension units,

the main substrate is connected to the extension unit via the extension substrate by connecting a wire extending from one extension substrate to the control terminal and connecting a plurality of extension substrates in series.

4. An indoor unit of an air conditioner according to claim 2 or 3,

a control unit that detects whether or not the main body unit is connected to each of the plurality of extension units is provided on the main board,

when connecting the wiring extending from the extension board to the control terminal and connecting the wiring extending from the extension unit not having the extension board to the extension terminal, the control unit transmits an operation command for the extension unit having the extension board and an operation command for the extension unit not having the extension board to the extension unit having the extension board connected to the control terminal.

5. An indoor unit of an air conditioner according to claim 4,

when only the extension unit having the extension board is connected to the main board, the control unit transmits an operation command only to the extension unit,

when a wire extending from the extension unit not having the extension board is connected to the control terminal, the control unit directly transmits an operation command to the extension unit.

6. An indoor unit of an air conditioner according to claim 1,

the main substrate is connected to the extension unit via the extension substrate by connecting the wires extending from the extension substrate to the control terminals and connecting the wires extending from the extension unit to the extension terminals.

7. An indoor unit of an air conditioner according to claim 6,

the extension board is detachably provided to the main body.

8. The indoor unit of an air conditioner according to claim 6 or 7, wherein,

the main board is provided with a control unit that detects whether or not the main body is connected to each of two or more expansion units,

when the extension unit connected via the extension board is detected, the control unit transmits an operation command to the detected extension unit via the extension board.

9. An indoor unit of an air conditioner according to any one of claims 1 to 8, wherein,

the main board is provided with a power supply circuit that supplies power to the extension unit connected to the main board.

10. An indoor system, comprising:

an indoor unit of an air conditioner according to claim 1 or 6; and

a substrate unit having a substrate case,

the extension substrate is accommodated in the substrate case.

Technical Field

The present invention relates to an indoor unit of an air conditioner and an indoor system for adjusting an air environment of a space to be air-conditioned.

Background

Conventionally, an indoor unit of an air conditioner has a basic function of blowing out air sucked from a suction port and passed through a heat exchanger from a discharge port. Further, there are indoor units of recent air conditioners to which various functions other than the basic functions are added (for example, see patent document 1). The indoor unit of patent document 1 includes a main substrate on which electric components related to a basic function are mounted and a plurality of drive substrates on which electric components related to an additional function are mounted in a casing of a main body.

Patent document 1: japanese patent laid-open publication No. 2004-251545

However, in the indoor unit of patent document 1, since the main substrate and the drive substrate are connected one-to-one via the signal line, a plurality of connection terminals for connecting the plurality of drive substrates to each other need to be provided on the main substrate, and therefore there is a problem that the size of the main substrate increases. In the indoor unit of patent document 1, if the control of the additional function is performed by the microcomputer of the main board, a plurality of connection terminals for sending commands to the plurality of drive boards are required to be provided on the main board, and therefore, the main board cannot be prevented from being increased in size.

Disclosure of Invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an indoor unit of an air conditioner and an indoor system that prevent an increase in size of a main substrate.

An indoor unit of an air conditioner includes a main body including a main substrate having control terminals corresponding to a plurality of extension units, the main substrate being connected to an extension substrate having at least one extension terminal as a connection terminal having the same specification as the control terminals, and being connected to at least one extension unit via the extension substrate.

An indoor system of the present invention includes the indoor unit of an air conditioner described above, and a substrate unit including a substrate case, and an extension substrate is housed in the substrate case.

According to the present invention, since the main board is connected to the extension unit via the extension board, it is not necessary to provide a plurality of connection terminals for connecting the plurality of extension units to the main board, and therefore, the main board can be prevented from being increased in size.

Drawings

Fig. 1 is an exploded perspective view illustrating an appearance of an indoor unit and an indoor system of an air conditioner according to embodiment 1 of the present invention.

Fig. 2 is a bottom view of the indoor system of fig. 1, as viewed from the side of the decorative panel, after coupling the components.

Fig. 3 is a schematic sectional view taken along the line Z-Z of fig. 2.

Fig. 4 is a block diagram showing a connection relationship of the indoor system of fig. 1.

Fig. 5 is a configuration diagram showing an example of an indoor system in which one extension unit is attached to the indoor unit of fig. 1.

Fig. 6 is a configuration diagram showing an example of an indoor system in which another extension unit is attached to the indoor unit of fig. 1.

Fig. 7 is a configuration diagram showing a connection relationship of the indoor unit of fig. 1.

Fig. 8 is a block diagram showing a functional configuration of the indoor system of fig. 1.

Fig. 9 is a configuration diagram showing an example of an indoor system in which an extension unit is further attached to the indoor unit of fig. 4.

Fig. 10 is a flowchart showing an operation at the time of power-on in the operation of the indoor system corresponding to each connection state shown in fig. 4 to 6.

Fig. 11 is a configuration diagram showing an example of an indoor system according to modification 1-1 of embodiment 1 of the present invention.

Fig. 12 is a block diagram showing a functional configuration of the indoor system of fig. 11.

Fig. 13 is a configuration diagram showing an example of an indoor system according to modification 1-2 of embodiment 1 of the present invention.

Fig. 14 is a configuration diagram showing an example of an indoor system according to modification 1 to 3 of embodiment 1 of the present invention.

Fig. 15 is a configuration diagram showing an indoor unit and an indoor system of an air conditioner according to embodiment 2 of the present invention.

Fig. 16 is a configuration diagram showing an example of an indoor unit and an indoor system of an air conditioner according to modification 2-1 of embodiment 2 of the present invention.

Fig. 17 is a configuration diagram showing an indoor unit of an air conditioner and an indoor system according to embodiment 3 of the present invention.

Detailed Description