Ventilation device and air conditioning system

Abstract

To provide a ventilation device which enables easy installation of an indoor casing of the ventilation device, and to provide an air conditioning system.SOLUTION: An air conditioning system includes: an indoor unit (130) of an air conditioner (110) including a first casing (131) formed with an air outlet (137); a ventilation device (210) including a second casing (225) formed with an outside air outlet (22a) for blowing outside air; a blower part (240) which sends outside air; and a duct (211) connected to the blower part (240). The first casing (131) includes a first insertion part (13a) and a second insertion part (13b) for inserting the duct (211). The second casing (225) includes a connection part (25g) with which the duct (211) is connected. The duct (211) is connected to the connection part (25g) through the first insertion part (13a), an internal space of the first casing (131), and the second insertion part (13b).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a ventilation device and an air conditioning system.

Background Art

[0002] An air conditioner with a ventilation function is known. The air conditioner with a ventilation function disclosed in Patent Document 1 includes an air conditioner and a ventilation device. The ventilation device includes an indoor casing, a fan, and a duct. The duct is connected to the indoor casing and an outdoor fan while being inserted through a hole in a wall portion. When the fan rotates, outside air is conveyed to the indoor casing through the duct and then blown into the room from an opening provided in the indoor casing.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when the hole in the wall portion is located at a position separated from the indoor casing of the ventilation device, when bringing the duct from the hole in the wall portion to the indoor casing of the ventilation device, if there is an indoor unit of the air conditioner between the hole in the wall portion and the indoor casing of the ventilation device, the duct has to be installed so as to bypass the indoor unit. As a result, the work of installing the indoor casing of the ventilation device may become complicated.

[0005] An object of the present disclosure is to provide a ventilation device and an air conditioning system that can easily install the indoor casing of the ventilation device.

Means for Solving the Problems

[0006] The first aspect is directed to an air conditioning system. The air conditioning system includes an indoor unit (130) of an air conditioner (110) including a first casing (131) in which an air outlet (137) is formed, a ventilation device (210) including a second casing (225) in which an outside air outlet (22a) for blowing out outside air is formed, a blower unit (240) for sending outside air, and a duct (211) connected to the blower unit (240). The first casing (131) includes a first insertion portion (13a) and a second insertion portion (13b) for inserting the duct (211). The second casing (225) includes a connection portion (25g) to which the duct (211) is connected. The duct (211) is connected to the connection portion (25g) through the first insertion portion (13a), the space inside the first casing (131), and the second insertion portion (13b).

[0007] In the first aspect, since the duct (211) is inserted into the indoor unit (130), when connecting the duct (211) to the second casing (225) during the installation of the second casing (225) of the ventilation device (210), it is not necessary to arrange the duct (211) so as to bypass the indoor unit (130) of the air conditioner (110). Therefore, the second casing (225) of the ventilation device (210) can be easily installed.

[0008] The second aspect is, in the first aspect, a refrigerant pipe (112, 113) is inserted into the first insertion portion (13a).

[0009] In the second aspect, since not only the duct (211) but also the refrigerant pipe is inserted into the first insertion portion (13a), the air conditioning system can be rationally configured.

[0010] The third aspect is, in the first or second aspect, the outside air outlet (22a) is arranged on one side in the longitudinal direction of the second casing (225), and the connection portion (25g) of the duct (211) is arranged on the other side in the longitudinal direction of the second casing (225).

[0011] In the third aspect, the casing of the ventilation device (210) can be easily installed such that the outside air outlet (22a) of the ventilation device (210) is located closer to the center of the indoor unit (130) of the air conditioner (110) below the indoor unit (130) of the air conditioner (110).

[0012] In the fourth aspect, in any one of the first to third aspects, at least one of the first insertion portion (13a), the second insertion portion (13b) of the air conditioner (110), and the connection portion (25g) of the ventilation device (210) includes a knock hole, an opening, or an opening / closing door.

[0013] In the fourth aspect, the duct (211) can be inserted into the first casing (131) of the air conditioner (110) or the second casing (225) of the ventilation device (210) using a knock hole, an opening, or an opening / closing door.

[0014] The fifth aspect is directed to a ventilation device. The ventilation device is used in combination with the air conditioner (110). The ventilation device includes a casing (225) in which an outside air outlet (22a) for blowing out outside air is formed, and a duct (211) for sending outside air, and the casing (225) includes a connection portion (25g) to which the duct (211) inserted into the indoor unit (130) of the air conditioner (110) is connected.

[0015] In the fifth aspect, since the duct (211) is inserted into the indoor unit (130), when connecting the duct (211) to the casing (225) during the installation of the casing (225) of the ventilation device (210), it is not necessary to arrange the duct (211) so as to bypass the indoor unit (130) of the air conditioner (110), and thus the casing (225) of the ventilation device (210) can be easily installed.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Embodiments for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the following embodiments are essentially preferred examples and are not intended to limit the scope of the present invention, its applications, or its uses.

[0018] "Embodiment" The air conditioning system (1) according to the embodiment will be described.

[0019] As shown in FIGS. 1 to 3, the air conditioning system (1) includes an air conditioner (110) and a ventilation device (210).

[0020] (1) Overall configuration of the air conditioner The air conditioner (110) adjusts the temperature of the air in the target space. The target space is the space in the interior (I). The interior (I) is partitioned from the exterior (J) by a wall portion (A). A through hole (XA) that communicates the interior (I) and the exterior (J) is formed in the wall portion (A).

[0021] The air conditioner (110) performs a cooling operation and a heating operation. In the cooling operation, the air conditioner (110) cools the air in the interior (I). In the heating operation, the air conditioner (110) heats the air in the interior (I).

[0022] FIG. 4 shows a schematic piping system diagram of the air conditioner (110). As shown in FIG. 4, the air conditioner (110) includes a refrigerant circuit (111). The refrigerant circuit (111) is filled with a refrigerant. The refrigerant circuit (111) performs a refrigeration cycle by circulating the refrigerant.

[0023] The air conditioner (110) includes an outdoor air conditioner (120), an indoor air conditioner (130), a first connection pipe (112), and a second connection pipe (113). The air conditioner (110) is of a paired type having one outdoor air conditioner (120) and one indoor air conditioner (130).

[0024] (1-1) Outdoor air conditioner The outdoor air conditioner (120) is installed in the exterior (J) (see FIGS. 1 and 3). As shown in FIG. 4, the outdoor air conditioner (120) includes a compressor (121), an outdoor heat exchanger (122), an expansion valve (123), a four-way switching valve (124), and an outdoor fan (125). The outdoor air conditioner (120) further includes a power supply terminal block (126) and a power supply circuit (923) (see FIG. 5).

[0025] As shown in FIG. 4, the compressor (121) compresses the refrigerant. The compressor (121) is a rotary compressor. The rotary compressor (121) is composed of a swing type, a rolling piston type, a scroll type, etc.

[0026] The outdoor heat exchanger (122) exchanges heat between the refrigerant and the outdoor air. The outdoor heat exchanger (122) is of the fin-and-tube type. The outdoor fan (125) conveys the outdoor air. The air conveyed by the outdoor fan (125) passes through the outdoor heat exchanger (122). The outdoor fan (125) is a propeller fan. The expansion valve (123) reduces the pressure of the refrigerant. The expansion valve (123) is an electronic or thermostatic expansion valve.

[0027] The four-way switching valve (124) reverses the flow of the refrigerant in the refrigerant circuit (111). The four-way switching valve (124) connects the discharge side of the compressor (121) and the gas side of the outdoor heat exchanger (122), and at the same time, connects the suction side of the compressor (121) and the gas side of the indoor heat exchanger (140) of the air-conditioning indoor unit (130). As a result, a refrigeration cycle (cooling cycle) is performed in which the outdoor heat exchanger (122) functions as a radiator and the indoor heat exchanger (140) functions as an evaporator. Also, the four-way switching valve (124) connects the discharge side of the compressor (121) and the gas side of the indoor heat exchanger (140) of the air-conditioning indoor unit (130), and at the same time, connects the suction side of the compressor (121) and the gas side of the outdoor heat exchanger (122). As a result, a refrigeration cycle (heating cycle) is performed in which the indoor heat exchanger (140) functions as a radiator and the outdoor heat exchanger (122) functions as an evaporator.

[0028] (1-2) Air-conditioning indoor unit As shown in FIGS. 1 and 2, the air-conditioning indoor unit (130) is installed indoors (I). The air-conditioning indoor unit (130) is fixed to the inner wall (A1). The air-conditioning indoor unit (130) is a wall-mounted air-conditioning indoor unit. The air-conditioning indoor unit (130) includes a casing (131), an indoor heat exchanger (140), a cross-flow fan (150), a flap (190), and a fan motor (194) that rotates the cross-flow fan (150). The air-conditioning indoor unit (130) further includes a power terminal block (132) and a communication terminal (133) (see FIG. 5).

[0029] As shown in FIGS. 1 and 2, the casing (131) forms the outer shell of the air-conditioning indoor unit (130). The casing (131) is formed in a horizontally long box shape on the left and right. The casing (131) is installed with the back surface of the casing (131) facing the inner wall (A1). An internal space (S1) for accommodating the indoor heat exchanger (140) and the cross-flow fan (150) is formed inside the casing (131). An air inlet (136) is formed at the upper part of the casing (131). An air outlet (137) is formed at the lower part of the casing (131). A flap (190) is provided at the air outlet (137). The flap (190) constitutes an air direction adjusting plate that changes the air direction of the air blown out from the air outlet (137).

[0030] The indoor heat exchanger (140) exchanges heat between the refrigerant and the indoor air. The indoor heat exchanger (140) is of the fin-and-tube type. The cross-flow fan (150) is an indoor fan that conveys indoor air. The air conveyed by the cross-flow fan (150) passes through the indoor heat exchanger (140).

[0031] The first connecting pipe (112) and the second connecting pipe (113) connect the air-conditioning indoor unit (130) and the air-conditioning outdoor unit (120) to each other in a state of being inserted through the through hole (XA). The first connecting pipe (112) is a gas pipe, and the second connecting pipe (113) is a liquid pipe. The first connecting pipe (112) is connected to the gas end of the indoor heat exchanger (140). The second connecting pipe (113) is connected to the liquid end of the indoor heat exchanger (140).

[0032] A piping space (S2) is formed at the lower rear part inside the casing (131). The piping space (S2) houses refrigerant pipes of the refrigerant circuit (111), a condensate drain passage (such as a hose), and the like.

[0033] (1-3) Control device As shown in FIG. 4, the air conditioner (110) has a control device (10). The control device (10) includes a remote controller (101), a first controller (102), and a second controller (103). Each of the first controller (102) and the second controller (103) includes a processor such as a CPU and an MPU, and a memory storing a program executed by the processor. The first controller (102) is provided in the air conditioning indoor unit (130), and the second controller (103) is provided in the air conditioning outdoor unit (120).

[0034] The remote controller (101) is provided indoors (I). The remote controller (101) is an operation unit operated by the user. The remote controller (101) transmits a command according to the user's operation to the first controller (102) via wireless or wired communication.

[0035] The first controller (102) controls various components of the air conditioning indoor unit (130) such as the cross-flow fan (150), the first flap (91), and the second flap (92) according to the command received from the remote controller (101).

[0036] The first controller (102) transmits a command according to the operation of the remote controller (101) to the second controller (103). The second controller (103) controls various components of the air conditioning outdoor unit (120) such as the compressor (121), the expansion valve (123), the four-way switching valve (124), and the outdoor fan (125) according to the command received from the first controller (102).

[0037] (2) Overall configuration of the ventilation device As shown in FIGS. 1 to 3, the ventilation device (210) ventilates the interior (I) by supplying outside air (the air outside the room (J)) to the interior (I). The ventilation device (210) is used in combination with the air conditioner (110). Being used in combination means that the ventilation device (210) is installed and used in parallel with the air conditioner (110). Installed in parallel includes not only the simultaneous installation of the air conditioner (110) and the ventilation device (210), but also the subsequent installation of the ventilation device (210) with respect to the air conditioner (110). Using means that the ventilation device (210) performs a process of supplying outside air to the interior (I), which is the target space of the air conditioner (110).

[0038] The ventilation device (210) includes a duct (211), a ventilation indoor unit (220), and a ventilation outdoor unit (230). The duct (211) is communicated with the ventilation indoor unit (220) and the ventilation outdoor unit (230) while being inserted through the through hole (XA). As shown in FIG. 2, in the interior (I), the duct (211) is connected to the ventilation indoor unit (220) while being inserted through the casing (131) of the air-conditioning indoor unit (130). In the duct (211), the portion located between the casing (131) of the air-conditioning indoor unit (130) and the casing (225) of the ventilation indoor unit (220) is covered with a cover member (D). As shown in FIG. 3, outside the room (J), the first communication pipe (112), the second communication pipe (113), and the duct (211) are covered with a cover member (C).

[0039] The ventilation outdoor unit (230) is an example of the first ventilation unit of the present invention. The ventilation indoor unit (220) is an example of the second ventilation unit of the present invention.

[0040] (2-1) Ventilation Indoor Unit As shown in FIGS. 1, 2, and 5, the ventilation indoor unit (220) is installed in the interior (I). The ventilation indoor unit (220) includes a reception unit (221), a display unit (222), a room temperature detection unit (223), a communication terminal (224), a casing (225), a third controller (226), and a power supply circuit (922).

[0041] The casing (225) houses a reception unit (221), a display unit (222), a room temperature detection unit (223), a communication terminal (224), and a third controller (226). An outside air outlet (22a) is formed in the casing (225). In the present embodiment, the outside air outlet (22a) blows out outside air horizontally. The casing (225) is separate from the casing (131) of the air-conditioning indoor unit (130). A gap is provided between the casing (225) and the casing (131) of the air-conditioning indoor unit (130). The casing (225) is installed, for example, below the casing (131) of the air-conditioning indoor unit (130). The reception unit (221) receives an operation signal for the ventilation device (210) transmitted from a remote controller for the ventilation device. The operation signal for the ventilation device (210) includes, for example, a signal instructing to start or stop the ventilation device (210), a signal instructing to switch the strength of the air volume of the outside air blown out from the outside air outlet (22a) of the ventilation device (210), etc. The reception unit (221) includes, for example, an infrared remote control reception module. The remote controller for the ventilation device may be shared with the remote controller (101) of the air conditioner (110). The display unit (222) includes, for example, an LED (Light Emitting Diode) and displays information indicating the operation state of the ventilation device (210). The information indicating the operation state of the ventilation device (210) includes, for example, information indicating the ON / OFF state of the power supply, information indicating the strength of the air volume of the outside air blown out from the outside air outlet (22a), information indicating whether the ventilation device (210) is in an interlocking state with the air conditioner (110), etc. The room temperature detection unit (223) is a temperature sensor that detects the temperature of the interior (I). The third controller (226) includes a processor such as a CPU and an MPU, and a memory storing a program executed by the processor. The third controller (226) controls the operation of various components of the ventilation indoor unit (220).

[0042] (2-2) Ventilation outdoor unit As shown in FIGS. 1, 3, and 5, the ventilation outdoor unit (230) is installed outdoors (J). The ventilation outdoor unit (230) is installed on the outer wall of the wall portion (A). The ventilation outdoor unit (230) includes an outdoor air temperature detection unit (231), a first motor (232), a damper detection unit (233), a second motor (234), a heater (235), a first communication terminal (236), a second communication terminal (237), a fourth controller (238), a fan (240), a damper (241), a casing (242), a power terminal block (243), and a power supply circuit (921).

[0043] The casing (242) houses the outdoor air temperature detection unit (231), the first motor (232), the damper detection unit (233), the second motor (234), the heater (235), the first communication terminal (236), the second communication terminal (237), the fourth controller (238), the fan (240), and the power terminal block (243). An air intake port (24a) is formed in the casing (242). The air intake port (24a) is opened and closed by the damper (241).

[0044] The outdoor air temperature detection unit (231) is a temperature sensor that detects the temperature of the outdoor air (the air outdoors (J)). The first motor (232) rotates the fan (240). When the fan (240) rotates, outdoor air flows into the interior of the casing (242) through the air intake port (24a). The outdoor air that has flowed into the interior of the casing (242) is sent through the duct (211) into the interior of the casing (225) of the ventilation indoor unit (220) and is blown out into the room (I) from the outdoor air outlet (22a) of the casing (225).

[0045] The second motor (234) opens and closes the air intake port (24a) by changing the rotation angle of the damper (241). The damper detection unit (233) includes, for example, a limit switch and detects the open or closed state of the air intake port (24a) by the damper (241).

[0046] The heater (235) heats the outside air. For example, when the difference between the room temperature detected by the room temperature detector (223) (the air temperature in the interior (I)) and the temperature of the outside air detected by the outside air temperature detector (231) becomes equal to or greater than a predetermined value, the outside air is heated by the heater (235), and the heated air is supplied to the interior (I). As a result, it is possible to suppress the supply of the outside air to the interior (I) in a low temperature state, and further, it is possible to suppress the occurrence of dew condensation due to the temperature difference between the outside air and the room temperature.

[0047] The fourth controller (238) includes a processor such as a CPU and an MPU, and a memory that stores a program executed by the processor. The fourth controller (238) controls the operations of various components of the ventilation outdoor unit (230).

[0048] (3) Configuration of the wiring of the air conditioning system With reference to FIG. 5, the configuration of the wiring of the air conditioning system (1) will be described.

[0049] As shown in FIG. 5, the air conditioning system (1) includes a first connection wire (400), a second connection wire (500), a first signal wire (600), and a second signal wire (700).

[0050] The first connection wire (400) is connected to the power supply terminal block (132) of the air conditioning indoor unit (130) and the power supply terminal block (243) of the ventilation outdoor unit (230). The second connection wire (500) is connected to the power supply terminal block (243) of the ventilation outdoor unit (230) and the power supply terminal block (126) of the air conditioning outdoor unit (120). The first signal wire (600) is connected to the communication terminal (133) of the air conditioning indoor unit (130) and the first communication terminal (236) of the ventilation outdoor unit (230). The second signal wire (700) is connected to the second communication terminal (237) of the ventilation outdoor unit (230) and the communication terminal (224) of the ventilation indoor unit (220).

[0051] FIG. 6 shows a substrate (900) provided in the air-conditioning indoor unit (130). As shown in FIG. 6, the substrate (900) is provided with a first controller (102), a power terminal block (132), a communication terminal (133), a power terminal (910), and a power circuit (920). The power terminal (910) is a terminal for connecting to an AC power supply (E) via an electric wire. The power circuit (920) is connected to the power terminal (910) by wirings (W1, W2). The power circuit (920) generates the required output power from the input power from the AC power supply (E) by converting the AC voltage from the AC power supply (E) input via the wirings (W1, W2) into a desired voltage. Various components of the air-conditioning indoor unit (130) such as a fan motor (194) are driven by the output power from the power circuit (920).

[0052] The power terminal block (132) is connected to a wiring (W3) branched from the wiring (W1) and a wiring (W4) branched from the wiring (W2). The first controller (102) controls the power circuit (920) to adjust the output power, thereby controlling the power sent from the input power from the AC power supply (E) to the power terminal block (132) via the wirings (W3, W4). The power terminal block (132) is connected to the first controller (102) via a wiring W (W5). The communication terminal (133) is connected to the first controller (102) via a wiring W (W6). A communication circuit (930) is provided in the wirings (W5, W6). The wirings (W5, W6) function as communication lines for the first controller (102) to transmit and receive control signals.

[0053] As shown in FIGS. 5 and 6, a part of the input power from the AC power supply (E), which is a commercial power supply, is input to the power circuit (920), and the air-conditioning indoor unit (130) operates by supplying power from the power circuit (920) to the air-conditioning indoor unit (130). The power terminal block (132) of the air-conditioning indoor unit (130) outputs another part of the power supplied to the power of the air-conditioning indoor unit (130).

[0054] The power output from the power supply terminal block (132) is sent to the power supply terminal block (243) of the ventilation outdoor unit (230) by the first connection wire (400). A part of the power sent to the power supply terminal block (243) by the first connection wire (400) is sent to the power supply circuit (921) of the ventilation outdoor unit (230) to supply power to the ventilation outdoor unit (230), and further, it is sent to the power supply circuit (922) of the ventilation indoor unit (220) via the second signal wire (700) to supply power to the ventilation indoor unit (220). As a result, the ventilation outdoor unit (230) and the ventilation indoor unit (220) operate. Also, another part of the power sent to the power supply terminal block (243) of the ventilation outdoor unit (230) by the first connection wire (400) is sent to the power supply terminal block (126) of the air-conditioning outdoor unit (120) by the second connection wire (500), and is sent from the power supply terminal block (126) to the power supply circuit (923) of the air-conditioning outdoor unit (120) to supply power to the air-conditioning outdoor unit (120). As a result, the air-conditioning outdoor unit (120) operates.

[0055] As shown in FIG. 5, the first controller (102) (see FIG. 4) of the air-conditioning indoor unit (130) outputs a first control signal for communicating with the air-conditioning outdoor unit (120). The first control signal is sent to the air-conditioning outdoor unit (120) via the first connection wire (400), the power supply terminal block (243) of the ventilation outdoor unit (230), the second connection wire (500), and the power supply terminal block (126) of the air-conditioning outdoor unit (120). As a result, the second controller (103) (see FIG. 4) of the air-conditioning outdoor unit (120) performs processing (for example, switching processing of the four-way switching valve (124)) based on the first control signal.

[0056] As shown in FIG. 5, the first controller (102) (see FIG. 4) of the air-conditioning indoor unit (130) outputs a second control signal for communicating with the ventilation device (210) from the communication terminal (133). The second control signal is sent to the air-conditioning outdoor unit (120) via the first signal line (600). As a result, the fourth controller (238) of the ventilation outdoor unit (230) receives the second control signal by the first communication terminal (236) and performs processing based on the second control signal. The second control signal includes, for example, a signal indicating that the power supply of the air-conditioning indoor unit (130) has been turned on or off. The processing based on the second control signal includes, for example, processing for operating the ventilation device (210) in conjunction with the operation of the air-conditioning indoor unit (130).

[0057] The fourth controller (238) of the ventilation outdoor unit (230) communicates with the third controller (226) of the ventilation indoor unit (220) via the second signal line (700). For example, when an operation signal for the ventilation device (210) is input from the remote controller of the ventilation device (210) to the reception unit (221), the third controller (226) of the ventilation outdoor unit (230) transmits the operation signal to the ventilation outdoor unit (230) via the second signal line (700) from the communication terminal (224). When the fourth controller (238) of the ventilation outdoor unit (230) receives the operation signal from the second communication terminal (237), it performs processing based on the operation signal (for example, processing for rotating the fan (240) by the first motor (232) to send outside air to the ventilation indoor unit (220)). Further, the third controller (226) of the ventilation indoor unit (220) and the first controller (102) of the air-conditioning indoor unit (130) communicate with each other via the first signal line (600) and the second signal line (700).

[0058] (4) Detailed Configuration of Ventilation Indoor Unit With reference to FIGS. 7 to 13, the ventilation indoor unit (220) will be further described. Hereinafter, in a state where the ventilation indoor unit (220) is installed on the inner wall (A1) of the room (I), with respect to the casing (225) of the ventilation indoor unit (220), the side of the inner wall (A1) is defined as the front, the side of the outside air outlet (22a) is defined as the rear, and the front-rear, up-down, left-right directions are defined.

[0059] As shown in FIGS. 7 to 13, the ventilation indoor unit (220) further includes a passage (227), a heat insulating material (228) installed around the passage (227), and a filter (229).

[0060] The passage (227) is a tubular member and is installed inside the casing (225) of the ventilation indoor unit (220). One end (27a) of the passage (227) is open while being located at the left - right center inside the casing (225). The other end (27b) of the passage (227) communicates with the outside air outlet (22a). A filter (229) is installed at the other end (27b) of the passage (227). The filter (229) includes, for example, a non - woven fabric.

[0061] The casing (225) of the ventilation indoor unit (220) has a hollow substantially rectangular parallelepiped shape. The casing (225) is installed so as to be longitudinally along the left - right direction. The outer surface of the casing (225) includes a first outer surface (25a), a second outer surface (25b), a third outer surface (25c), a fourth outer surface (25d), a fifth outer surface (25e), and a sixth outer surface (25f). The first outer surface (25a) and the second outer surface (25b) face away from each other, and between the first outer surface (25a) and the second outer surface (25b), the third outer surface (25c), the fifth outer surface (25e), the fourth outer surface (25d), and the sixth outer surface (25f) are arranged in an annular manner. In this embodiment, the casing (225) is installed such that the first outer surface (25a) faces upward, the second outer surface (25b) faces downward, the third outer surface (25c) faces rearward, the fourth outer surface (25d) faces forward, the fifth outer surface (25e) faces rightward, and the sixth outer surface (25f) faces leftward. In FIG. 11, the view of the cover member constituting the third outer surface (25c) is omitted except for the peripheral portion of the outside air outlet (22a).

[0062] A connection part (25g) is formed on the first outer surface (25a), the second outer surface (25b), and the fifth outer surface (25e). On the first outer surface (25a) and the second outer surface (25b), the connection part (25g) is arranged on the right part of each surface. The connection part (25g) indicates the location in the casing (225) where the duct (211) is connected. Specifically, the location where the duct (211) is connected indicates the location where the duct (211) is inserted into the inside of the casing (225). The connection part (25g) includes a knock hole, an opening, or an opening / closing door. The connection part (25g) may have a closed state and an open state like a knock hole and an opening / closing door, and may be configured such that the duct (211) can be inserted by switching to the open state, or may be configured to be always open like an opening. When the connection part (25g) is configured as a knock hole, an edge part (H) of the connection part (25g) (see FIGS. 7, 9, and 10) is formed thinner than the surrounding part. When the connection part (25g) is pressed, the thin edge part (H) in the connection part (25g) is cut off from the casing (225), and the connection part (25g) is removed from the casing (225). As a result, a hole penetrating the inside and the outside of the casing (225) is formed at the location where the connection part (25g) was located in the casing (225).

[0063] In the present embodiment, the connection part (25g) is formed on the first outer surface (25a), the second outer surface (25b), and the fifth outer surface (25e). However, the present invention is not limited to this. The number of connection parts (25g) is not particularly limited. Only one connection part (25g) may be provided, or a plurality of connection parts (25g) may be provided.

[0064] The duct (211) is connected to one end part (27a) of a passage (227) inside the casing (225) in a state where the duct (211) is inserted into the inside of the casing (225) from any one of the plurality of connection parts (25g) provided on the outer surface of the casing (225).

[0065] The duct (211) is made of a bellows-shaped or sponge-shaped material (e.g., resin) that can be bent (plastically or elastically deformed). When the duct (211) is inserted into the casing (225) from the connection part (25g) of the first outer surface (25a) or the connection part (25g) of the second outer surface (25b), it is bent to the left and connected to one end (27a) of the passage (227) inside the casing (225). When the duct (211) is inserted into the casing (225) from the connection part (25g) of the fifth outer surface (25e), it is connected to one end (27a) of the passage (227) in a straight and extended state without bending inside the casing (225) (not shown).

[0066] An outside air outlet (22a) is formed on the third outer surface (25c). The outside air outlet (22a) is arranged at the left part of the third outer surface (25c). The third outer surface (25c) includes a first water catch groove (25h) and a second water catch groove (25i).

[0067] (5) Positional relationship between the air conditioner indoor unit and the duct As shown in FIGS. 14(a) to 17(c), the casing (131) of the air conditioner indoor unit (130) includes a first insertion portion (13a) and a second insertion portion (13b).

[0068] The duct (211) is sent into the room (I) through the through hole (XA) and inserted into the casing (131) of the air conditioner indoor unit (130) from the first insertion portion (13a). The duct (211) inside the casing (131) protrudes from the second insertion portion (13b) to the outside of the casing (131). The portion of the duct (211) that protrudes from the second insertion portion (13b) to the outside of the casing (131) is connected (inserted) to the connection part (25g) of the ventilation indoor unit (220).

[0069] The duct (211) is connected (inserted) to the connection part (25g) of the casing (225) of the ventilation indoor unit (220) while being inserted into the casing (131) of the air conditioner indoor unit (130) through the first insertion portion (13a) and the second insertion portion (13b).

[0070] In the first insertion part (13a), refrigerant pipes (the first connection pipe (112) and the second connection pipe (113)) are further inserted. The refrigerant pipes are sent into the room (I) through the through hole (XA), inserted from the first insertion part (13a) into the inside of the casing (131) of the air conditioning indoor unit (130), and connected to the indoor heat exchanger (140) (see FIG. 1).

[0071] Each of the first insertion part (13a) and the second insertion part (13b) includes a knock hole, an opening, or an opening / closing door. Each of the first insertion part (13a) and the second insertion part (13b) has a closed state and an open state like a knock hole and an opening / closing door, and may be configured to be able to insert the duct (211) by switching to the open state, or may be configured to be always open like an opening. When each of the first insertion part (13a) and the second insertion part (13b) is configured as a knock hole, the edge parts of each of the first insertion part (13a) and the second insertion part (13b) are formed thinner than the surroundings. When each of the first insertion part (13a) and the second insertion part (13b) is pressed, the thin edge parts in each of the first insertion part (13a) and the second insertion part (13b) are cut off from the casing (131), and each of the first insertion part (13a) and the second insertion part (13b) is removed from the casing (131). As a result, holes penetrating the inside and the outside of the casing (131) are formed at the locations where each of the first insertion part (13a) and the second insertion part (13b) is located in the casing (131).

[0072] (6) Installation example of duct With reference to FIGS. 14(a) to 17(c), the arrangement structure of the first insertion part (13a) and the second insertion part (13b) will be described.

[0073] Hereinafter, as shown in FIGS. 7 to 10, when the first outer surface (25a) faces upward, the second outer surface (25b) faces downward, and the third outer surface (25c) faces rearward, the posture of the casing (225) of the ventilation indoor unit (220) may be described as the first posture.

[0074] Hereinafter, the posture when the posture of the casing (225) is vertically reversed from the first posture (the posture in which the first outer surface (25a) faces downward, the second outer surface (25b) faces upward, and the third outer surface (25c) faces rearward) may be described as the second posture.

[0075] (6-1) A first example of the arrangement structure of the first insertion portion (13a) and the second insertion portion (13b) will be described.

[0076] As shown in FIG. 14(a), the casing (225) of the ventilation indoor unit (220) is installed below and to the right of the casing (131) of the air-conditioning indoor unit (130). The casing (225) of the ventilation indoor unit (220) is arranged to be in the above-described first posture. On the inner wall (A1), a through-hole (XA) is arranged at a location facing the lower right part of the back surface of the casing (131) of the air-conditioning indoor unit (130). The first insertion portion (13a) is arranged to face the through-hole (XA). The second insertion portion (13b) is arranged at a location on the right side of the lower part of the casing (131). The duct (211) inserted through the through-hole (XA) is inserted into the casing (131) from the first insertion portion (13a), protrudes downward from the second insertion portion (13b) of the casing (131), and is connected (inserted) to the connection portion (25g) (see FIGS. 7 and 8) of the first outer surface (25a) of the ventilation indoor unit (220).

[0077] (6-2) A second example of the arrangement structure of the first insertion portion (13a) and the second insertion portion (13b) will be described.

[0078] As shown in FIG. 14(b), in the second example, the difference from the first example (see FIG. 14(a)) is that a through-hole (XA) is arranged on the right side of the casing (131) of the air-conditioning indoor unit (130), and the first insertion portion (13a) is arranged at a location on the lower side of the right part of the casing (131).

[0079] (6-3) A third example of the arrangement structure of the first insertion portion (13a) and the second insertion portion (13b) will be described.

[0080] As shown in FIG. 15(a), the casing (225) of the ventilation indoor unit (220) is installed below and to the left of the casing (131) of the air-conditioning indoor unit (130). The casing (225) of the ventilation indoor unit (220) is arranged to be in the above-mentioned second posture. A through hole (XA) is arranged at a position facing the lower left part of the back surface of the casing (131) of the air-conditioning indoor unit (130). The first insertion part (13a) is arranged to face the through hole (XA). The second insertion part (13b) is arranged at a position on the left side of the lower part of the casing (131). The duct (211) inserted through the through hole (XA) is inserted into the casing (131) from the first insertion part (13a), protrudes downward from the second insertion part (13b) of the casing (131), and is connected to the connection part (25g) (see FIGS. 8 and 9) of the second outer surface (25b) of the ventilation indoor unit (220).

[0081] (6-4) A fourth example of the arrangement structure of the first insertion part (13a) and the second insertion part (13b) will be described.

[0082] As shown in FIG. 15(b), in the fourth example, the through hole (XA) is arranged on the left side of the casing (131) of the air-conditioning indoor unit (130), and the point that the first insertion part (13a) is arranged at a position on the lower side of the left part of the casing (131) is different from the third example (see FIG. 15(a)).

[0083] (6-5) A fifth example of the arrangement structure of the first insertion part (13a) and the second insertion part (13b) will be described. In the fifth example, the differences from the third example will be described.

[0084] As shown in FIG. 16(a), in the fifth example, the through hole (XA) is arranged at a position facing the lower right part of the back surface of the casing (131) of the air-conditioning indoor unit (130), and the point that the first insertion part (13a) is arranged at a position facing the through hole (XA) is different from the third example (see FIG. 15(a)).

[0085] (6-6) A sixth example of the installation example of the arrangement structure of the first insertion part (13a) and the second insertion part (13b) will be described.

[0086] As shown in FIG. 16(b), in the sixth example, a through hole (XA) is disposed on the right side of the casing (131) of the air-conditioning indoor unit (130), and the first insertion portion (13a) is disposed at a lower position in the right part of the casing (131), which is different from the third example (see FIG. 15(a)).

[0087] (6-7) The seventh example of the arrangement structure of the first insertion portion (13a) and the second insertion portion (13b) will be described.

[0088] As shown in FIG. 16(c), in the seventh example, a through hole (XA) is disposed on the lower right side of the casing (131) of the air-conditioning indoor unit (130), and the first insertion portion (13a) is disposed at a right position in the lower part of the casing (131), which is different from the third example (see FIG. 15(a)).

[0089] (6-8) The eighth example of the arrangement structure of the first insertion portion (13a) and the second insertion portion (13b) will be described.

[0090] As shown in FIG. 17(a), the casing (225) of the ventilation indoor unit (220) is installed on the right side of the air-conditioning indoor unit (130). The casing (225) of the ventilation indoor unit (220) is arranged to be in the above second posture. A through hole (XA) is disposed at a position facing the lower right part of the back surface of the casing (131) of the air-conditioning indoor unit (130). The first insertion portion (13a) is disposed opposite to the through hole (XA). The second insertion portion (13b) is disposed at a lower position in the right part of the casing (131). The duct (211) inserted through the through hole (XA) is inserted into the casing (131) from the first insertion portion (13a), protrudes to the right of the casing (131) from the second insertion portion (13b), and is connected to the connection portion (25g) (see FIGS. 8 and 10) of the fifth outer surface (25e) of the ventilation indoor unit (220).

[0091] (6-9) The ninth example of the arrangement structure of the first insertion portion (13a) and the second insertion portion (13b) will be described.

[0092] As shown in FIG. 17(b), the casing (225) of the ventilation indoor unit (220) is installed on the left side of the air-conditioning indoor unit (130). The casing (225) of the ventilation indoor unit (220) is arranged to be in the first posture. A through-hole (XA) is arranged at a position facing the lower left part of the back surface of the casing (131) of the air-conditioning indoor unit (130). The first insertion part (13a) is arranged to face the through-hole (XA). The second insertion part (13b) is arranged at a lower position in the left part of the casing (131). The duct (211) inserted into the through-hole (XA) is inserted into the casing (131) from the first insertion part (13a), protrudes leftward from the casing (131) through the second insertion part (13b), and is connected to the connection part (25g) of the fifth outer surface (25e) of the ventilation indoor unit (220) (see FIGS. 8 and 10).

[0093] (6-10) A tenth example of the arrangement structure of the first insertion part (13a) and the second insertion part (13b) will be described.

[0094] As shown in FIG. 17(c), in the tenth example, the through-hole (XA) is arranged at a position facing the lower right part of the back surface of the casing (131) of the air-conditioning indoor unit (130), and the first insertion part (13a) is arranged to face the through-hole (XA), which is different from the ninth example (see FIG. 17(b)).

[0095] (7) Effects of the embodiment As shown in FIG. 1, the duct (211) is connected to the fan (240). Being connected to the fan (240) indicates that the duct (211) is installed so that the external air flow generated by the fan (240) flows into the duct (211). As shown in FIGS. 14(a) to 17(c), the duct (211) is connected to the connection part (25g) through the first insertion part (13a), the space (inside) inside the casing (131) of the air-conditioning indoor unit (130), and the second insertion part (13b). Thereby, when installing the casing (225) of the ventilation indoor unit (220), it is not necessary to install the duct (211) by bypassing the casing (131) of the air-conditioning indoor unit (130), so the casing (225) of the ventilation indoor unit (220) can be easily installed.

[0096] In addition, since a part of the duct (211) can be housed inside the casing (131) of the air-conditioning indoor unit (130) so as not to be exposed to the outside, the duct (211) can be installed neatly.

[0097] An outside air outlet (22a) is arranged on one side in the left-right direction (longitudinal direction) of the casing (225) of the ventilation indoor unit (220), and a plurality of connection parts (25g) (the connection part (25g) of the first outer surface (25a), the connection part (25g) of the second outer surface (25b), and the connection part (25g) of the fifth outer surface (25e)) are arranged on the other side. As a result, as shown in FIGS. 14(a) and 14(b), when the casing (225) of the ventilation indoor unit (220) is installed to the right of the left-right center of the casing (131) of the air-conditioning indoor unit (130), the casing (225) is installed so that the outside air outlet (22a) faces leftward, and the outside air outlet (22a) can be brought close to the air outlet (137) of the air-conditioning indoor unit (130). As a result, the outside air blown out from the outside air outlet (22a) can be effectively mixed with the air blown out from the air outlet (137).

[0098] As shown in FIGS. 15(a) to 16(c), when the casing (225) of the ventilation indoor unit (220) is installed to the left of the left-right center of the casing (131) of the air-conditioning indoor unit (130), the casing (225) is installed so that the outside air outlet (22a) faces rightward, and the outside air outlet (22a) can be brought close to the air outlet (137) of the air-conditioning indoor unit (130). As a result, the outside air blown out from the outside air outlet (22a) can be effectively mixed with the air blown out from the air outlet (137).

[0099] As described above, although the embodiments have been described, it will be understood that various changes in form and details are possible without departing from the spirit and scope of the claims. Also, the above embodiments, modification examples, and other embodiments may be appropriately combined or replaced as long as the functions of the object of the present disclosure are not impaired.

[0100] The descriptions such as "first", "second", "third",... mentioned above are used to distinguish the terms to which these descriptions are attached, and do not limit even the number and order of those terms.

Industrial Applicability

[0101] The present disclosure is useful for a ventilation device and an air conditioning system.

Description of Reference Numerals

[0102] 13a First insertion part 13b Second insertion part 22a Outdoor air outlet 25g Connection part 110 Air conditioner 112, 113 Refrigerant pipes 130 Indoor unit 131 First casing 137 Air outlet 210 Ventilation device 211 Duct 225 Second casing 240 Blower unit (fan)

Claims

1. An indoor unit (130) of an air conditioner (110) including a first casing (131) in which an air outlet (137) is formed, A ventilation device (210) disposed around the indoor unit (130) and including a second casing (225), A blower unit (240), A duct (211) connected to the blower unit (240), Characterized by comprising: The first casing (131) is formed on the outer surface of the first casing (131), and includes a first opening (13a) that communicates between the inside and the outside of the first casing (131), and a second opening (13b) that is formed at a location spaced apart from the first opening (13a) on the outer surface of the first casing (131) and communicates between the inside and the outside of the first casing (131). The second casing (225) includes a connection portion (25g) to which the duct (211) is connected. A plurality of the connection portions (25g) are provided. The duct (211) is connected to any one of the plurality of connection portions (25g) through the first opening (13a), the space inside the first casing (131), and the second opening (13b). An air conditioning system.

2. In claim 1, An air conditioning system in which refrigerant pipes (112, 113) are inserted into the first opening (13a).

3. In claim 1 or claim 2, An outside air outlet (22a) for blowing outside air is disposed on one side in the longitudinal direction of the second casing (225). A connection portion (25g) of the duct (211) is disposed on the other side in the longitudinal direction of the second casing (225). The second casing (225) has a hollow rectangular parallelepiped shape. An air conditioning system.

4. In any one of claims 1 to 3, At least one of the first opening (13a) of the air conditioner (110), the second opening (13b), and the connection portion (25g) of the ventilation device (210) is formed by a knock hole, an opening, or an opening / closing door. An air conditioning system.

5. In any one of claims 1 to 4, The ventilation device (210) is installed on the right side or the left side of the indoor unit (130). An air conditioning system.

6. A ventilation device used in combination with an air conditioner (110), A casing (225), A duct (211) communicating with the outdoor space, Characterized by comprising: The casing (225) includes a plurality of connection parts (25g), is formed on the outer surface of the first casing (131) of the indoor unit (130) of the air conditioner (110), and has a first opening (13a) that communicates between the inside and the outside of the first casing (131), and a second opening (13b) that is formed at a location spaced apart from the first opening (13a) on the outer surface of the first casing (131) and communicates between the inside and the outside of the first casing (131). The duct (211) inserted into the first casing (131) through the second opening (13b) is connected to any one of the plurality of connection parts (25g). Ventilation device.

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