Ventilation equipment and air conditioning systems

Abstract

To provide a ventilating device to which electric power can be supplied by a simple structure, and an air condition system.SOLUTION: A ventilating device comprises a power terminal block (243) comprising a first input terminal (306) to which electric power from one of an indoor unit (130) and an outdoor unit (120) of an air conditioner (110) is inputted, and an air blowing part (232) for generating an outdoor air flow. The air blowing part (232) is driven by the electric power supplied via the power terminal block (243). The power terminal block (243) comprises an output terminal (356) for outputting the electric power to the other of the indoor unit (130) and the outdoor unit (120).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 inserted into a hole in a wall portion and communicates with the indoor casing and an outdoor fan. When the fan rotates, outside air is conveyed through the duct to the indoor casing 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, in order to secure power for driving the fan etc. of the ventilation device, it is necessary to prepare a power line for the ventilation device and a power outlet into which the plug of the power line is inserted, which is troublesome, and there is a possibility that it will look ungood due to the exposure of the power line. Also, if an attempt is made to obtain power for the ventilation device from the power supply of the indoor unit of the air conditioner by changing the configuration around the power supply of the indoor unit, it is troublesome because a design change around the power supply of the indoor unit is required.

[0005] An object of the present disclosure is to provide a ventilation device and an air conditioning system that can supply power to a ventilation device with a simple configuration.

Means for Solving the Problems

[0006] The first embodiment relates to a ventilation device. The ventilation device sends outside air into a room. The ventilation device comprises a power terminal block (243) having a first input terminal (306) to which power is input from either the indoor unit (130) or the outdoor unit (120) of an air conditioner (110), and a blower unit (232) that generates an outside airflow. The blower unit (232) is driven by the power supplied via the power terminal block (243), and the power terminal block (243) has an output terminal (356) that outputs the power to the other of the indoor unit (130) or the outdoor unit (120).

[0007] In the first embodiment, there is no need to add a power supply for the ventilation device, so the ventilation device (210) can be easily installed.

[0008] In the second embodiment, the first input terminal (306) of the power terminal block (243) receives input of a first signal for communication between the indoor unit (130) and the outdoor unit (120), and the output terminal (356) of the power terminal block (243) outputs the first signal.

[0009] In the second embodiment, the power terminal block (243) of the ventilation device can be used to transmit not only power but also control signals from the indoor unit (130) to the outdoor unit (120).

[0010] A third embodiment is the first or second embodiment, which includes a second input terminal (236) into which a second signal is input for the indoor unit (130) to communicate with the ventilation device.

[0011] In the third embodiment, communication is possible between the indoor unit (130) of the air conditioner (110) and the ventilation device.

[0012] The fourth embodiment includes, in any one of the first to third embodiments, a first wiring (810, 820) that sends the power from the first input terminal (306) to the output terminal (356), and a second wiring (830, 840) that sends the power from the first input terminal (306) to the blower (232).

[0013] In the fourth embodiment, the power input to the first input terminal (306) can be sent to the output terminal (356) and the blower unit (232) of the ventilation device.

[0014] A fifth embodiment comprises, in any one of the first to fourth embodiments, a first ventilation unit (230) including the power terminal block (243) and the blower (232), and a second ventilation unit (220) including an outside air outlet (22a) for blowing out outside air, wherein the first ventilation unit (230) includes a communication terminal (237) for communicating with the second ventilation unit (220).

[0015] In the fifth embodiment, communication is possible between the first ventilation unit (230) and the second ventilation unit (220).

[0016] The sixth aspect relates to an air conditioning system. The air conditioning system comprises the ventilation device and the air conditioner (110).

[0017] In the sixth embodiment, since there is no need to add a power supply for the ventilation device, the ventilation device (210) can be easily installed.

[0018] The seventh aspect is, in the sixth aspect, the air conditioner (110) changes the upper limit of its power consumption in accordance with the power consumption of the ventilation device.

[0019] In the seventh embodiment, it is possible to prevent the commercial power circuit breaker from tripping when the air conditioner (110) is in use. [Brief explanation of the drawing]

[0020] [Figure 1] Figure 1 is a schematic cross-sectional view of an air conditioning system according to an embodiment. [Figure 2] Figure 2 is a front view of the indoor air conditioning unit and the indoor ventilation unit. [Figure 3] Figure 3 is a front view of the air conditioning outdoor unit and the ventilation outdoor unit. [Figure 4] Figure 4 is a block diagram showing the basic elements of an air conditioner. [Figure 5] Figure 5 is a block diagram showing the configuration of the air conditioning system. [Figure 6] Figure 6 is a schematic diagram showing the power supply configuration of the air conditioning indoor unit. [Figure 7] Figure 7 is a diagram showing the power terminal block of the ventilation outdoor unit. [Figure 8] Figure 8 is a front view of the first terminal block. [Figure 9] Figure 9 is a side view of the first terminal block. [Figure 10] Figure 10 is a flowchart showing the operation of the third controller of the air conditioner.

Mode for Carrying Out the Invention

[0021] 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.

[0022] 《Embodiment》 The air conditioning system (1) according to the embodiment will be described.

[0023] As shown in FIGS. 1 to 3, the air conditioning system (1) includes an air conditioner (110) and a ventilation device (210).

[0024] (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 room (I). The room (I) is partitioned from the outside (J) by a wall (A). A through hole (XA) that communicates the room (I) and the outside (J) is formed in the wall (A).

[0025] <END>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 room (I). In the heating operation, the air conditioner (110) heats the air in the room (I).

[0026] Figure 4 shows a schematic piping diagram of the air conditioner (110). As shown in Figure 4, the air conditioner (110) is equipped with a refrigerant circuit (111). The refrigerant circuit (111) is filled with refrigerant. The refrigerant circuit (111) performs a refrigeration cycle by circulating the refrigerant.

[0027] The air conditioner (110) comprises an outdoor air conditioning unit (120), an indoor air conditioning unit (130), a first connecting pipe (112), and a second connecting pipe (113). The air conditioner (110) is a pair type having one outdoor air conditioning unit (120) and one indoor air conditioning unit (130).

[0028] (1-1)Air conditioner outdoor unit As shown in Figures 1 and 3, the air conditioning outdoor unit (120) is installed outdoors (J). As shown in Figure 4, the air conditioning outdoor unit (120) comprises a compressor (121), an outdoor heat exchanger (122), an expansion valve (123), a four-way switching valve (124), and an outdoor fan (125). The air conditioning outdoor unit (120) further comprises a power terminal block (126) and a power circuit (923) (see Figure 5).

[0029] As shown in Figure 4, the compressor (121) compresses the refrigerant. The compressor (121) is a rotary compressor. Rotary compressors (121) can be composed of oscillating type, rolling piston type, scroll type, etc.

[0030] 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) transports the outdoor air. The air transported 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 temperature-sensitive expansion valve.

[0031] The four-way directional control valve (124) reverses the flow of refrigerant in the refrigerant circuit (111). The four-way directional control valve (124) connects the discharge side of the compressor (121) to the gas side of the outdoor heat exchanger (122), and simultaneously connects the suction side of the compressor (121) to the gas side of the indoor heat exchanger (140) of the indoor air conditioning unit (130). As a result, a refrigeration cycle (cooling cycle) is performed in which the outdoor heat exchanger (122) functions as a heat radiator and the indoor heat exchanger (140) functions as an evaporator. In addition, the four-way directional control valve (124) connects the discharge side of the compressor (121) to the gas side of the indoor heat exchanger (140) of the indoor air conditioning unit (130), and simultaneously connects the suction side of the compressor (121) to 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 heat radiator and the outdoor heat exchanger (122) functions as an evaporator.

[0032] (1-2) Indoor unit of the air conditioner As shown in Figures 1 and 2, the indoor air conditioning unit (130) is installed in a room (I). The indoor air conditioning unit (130) is fixed to the interior wall (A1). The indoor air conditioning unit (130) is a wall-mounted type air conditioning unit. The indoor air conditioning unit (130) comprises 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 indoor air conditioning unit (130) further comprises a power terminal block (132) and a communication terminal (133) (see Figure 5).

[0033] As shown in Figures 1 and 2, the casing (131) forms the outer casing of the air conditioning indoor unit (130). The casing (131) is formed in a horizontally elongated box shape. The casing (131) is installed with its rear surface facing the inner wall (A1). Inside the casing (131), an internal space (S1) is formed to house the indoor heat exchanger (140) and the cross-flow fan (150). An intake port (136) is formed at the top of the casing (131). An outlet port (137) is formed at the bottom of the casing (131). A flap (190) is provided at the outlet port (137). The flap (190) constitutes a wind direction adjustment plate that changes the direction of the air blown out from the outlet port (137).

[0034] 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 transports indoor air. The air transported by the cross-flow fan (150) passes through the indoor heat exchanger (140).

[0035] The first connecting pipe (112) and the second connecting pipe (113) are inserted through the through hole (XA) to connect the indoor unit (130) and the outdoor unit (120) of the air conditioner. 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).

[0036] A piping space (S2) is formed in the lower rear part of the casing (131). The piping space (S2) houses the refrigerant piping of the refrigerant circuit (111) and the condensate discharge passage (e.g., a hose).

[0037] (1-3) Control device As shown in Figure 4, the air conditioner (110) has a control device (10). The control device (10) includes a remote control (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 memory that stores a program executed by the processor. The first controller (102) is provided in the indoor air conditioner unit (130), and the second controller (103) is provided in the outdoor air conditioner unit (120).

[0038] The remote control (101) is installed in the room (I). The remote control (101) is an operating unit operated by the user. The remote control (101) transmits commands corresponding to the user's operation to the first controller (102) via wireless or wired connection.

[0039] The first controller (102) controls various components of the indoor air conditioning unit (130), such as the cross-flow fan (150), the first flap (91), and the second flap (92), in response to commands received from the remote control (101).

[0040] The first controller (102) transmits commands to the second controller (103) in response to the operation of the remote control (101). The second controller (103) controls various components of the air conditioning outdoor unit (120), such as the compressor (121), expansion valve (123), four-way switching valve (124), and outdoor fan (125), in response to the commands received from the first controller (102).

[0041] (2) Overall configuration of the ventilation system As shown in Figures 1 to 3, the ventilation device (210) ventilates the room (I) by supplying outside air (air from outside (J)) into the room (I). The ventilation device (210) is used in conjunction with the air conditioner (110). Using them together means that the ventilation device (210) is used in conjunction with the air conditioner (110). Using them together includes not only the simultaneous installation of the air conditioner (110) and the ventilation device (210), but also the retrofitting of the ventilation device (210) to the air conditioner (110). Using it means that the ventilation device (210) performs the process of supplying outside air to the room (I), which is the target space of the air conditioner (110).

[0042] The ventilation system (210) comprises a duct (211), an indoor ventilation unit (220), and an outdoor ventilation unit (230). The duct (211) is inserted through a through-hole (XA) and communicates with the indoor ventilation unit (220) and the outdoor ventilation unit (230). As shown in Figure 3, outside (J), the first connecting pipe (112), the second connecting pipe (113), and the duct (211) are covered by a cover member (C).

[0043] The outdoor ventilation unit (230) is an example of the first ventilation unit of the present invention. The indoor ventilation unit (220) is an example of the second ventilation unit of the present invention.

[0044] (2-1) Indoor ventilation unit As shown in Figures 1, 2, and 5, the indoor ventilation unit (220) is installed in the room (I). The indoor ventilation 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).

[0045] 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). The outside air outlet (22a) communicates with a duct (211) via a passage (227) provided inside the casing (225). In this embodiment, the outside air outlet (22a) blows out outside air horizontally. It 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 operation signals for the ventilation device (210) transmitted from the ventilation device remote control. Operation signals for the ventilation device (210) include, for example, signals instructing to start or stop the ventilation device (210), signals instructing to switch the strength of the airflow of 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 receiving module. The ventilation device remote control may be shared with the remote control (101) of the air conditioner (110). The display unit (222) includes, for example, an LED (Light Emitting Diode) and displays information indicating the operating status of the ventilation device (210). Information indicating the operating status of the ventilation device (210) includes, for example, information indicating the ON / OFF state of the power supply, information indicating the strength of the airflow of outside air blown out from the outside air outlet (22a), and information indicating whether or not the ventilation device (210) is linked to the air conditioner (110). The room temperature detection unit (223) is a temperature sensor that detects the temperature of the room (I). The third controller (226) includes a processor such as a CPU and an MPU, and a memory that stores a program executed by the processor. The third controller (226) controls the operation of various components of the indoor ventilation unit (220).

[0046] (2-2) Outdoor ventilation unit As shown in Figures 1, 3, and 5, the outdoor ventilation unit (230) is installed outdoors (J). The outdoor ventilation unit (230) is installed on the outer wall of the wall section (A). The outdoor ventilation unit (230) comprises an outdoor 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 circuit (921).

[0047] The casing (242) houses an ambient temperature sensing unit (231), a first motor (232), a damper sensing 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), and a 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 a damper (241).

[0048] The outside temperature detection unit (231) is a temperature sensor that detects the temperature of the outside air (the air outside (J)). The first motor (232) rotates the fan (240). As the fan (240) rotates, outside air flows into the casing (242) through the intake port (24a). The outside air that has flowed into the casing (242) is sent through the duct (211) to the casing (225) of the ventilation indoor unit (220) and blown out into the room (I) from the outside air outlet (22a) of the casing (225). The first motor (232) is an example of the air blowing unit of the present invention.

[0049] The second motor (234) opens and closes the 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 whether the intake port (24a) is open or closed by the damper (241).

[0050] The heater (235) heats the outside air. For example, when the difference between the room temperature (the temperature inside the room (I)) detected by the room temperature detection unit (223) and the temperature of the outside air detected by the outside temperature detection unit (231) exceeds a predetermined value, the heater (235) heats the outside air, and the heated air is supplied to the room (I). As a result, it is possible to suppress the supply of outside air to the room (I) at a low temperature, and furthermore, it is possible to suppress condensation caused by the temperature difference between the outside air and the room temperature.

[0051] The fourth controller (238) includes a processor such as a CPU and an MPU, and memory that stores programs executed by the processor. The fourth controller (238) controls the operation of various components of the outdoor ventilation unit (230).

[0052] The fourth controller (238), the first communication terminal (236), and the second communication terminal (237) are provided on the circuit board (244) (see Figure 6) and are electrically connected to each other on the circuit board (244). Electrical connection indicates that signals or power can be transmitted and received between the connected components. The first motor (232), damper detection unit (233), second motor (234), heater (235), and power terminal block (243) are electrically connected to the circuit board (244).

[0053] (3) Wiring configuration of the air conditioning system Referring to Figure 5, the wiring configuration of the air conditioning system (1) will be explained.

[0054] As shown in Figure 5, the air conditioning system (1) includes a first connecting wire (400), a second connecting wire (500), a first signal wire (600), and a second signal wire (700).

[0055] The first connecting wire (400) is connected to the power terminal block (132) of the air conditioning indoor unit (130) and the power terminal block (243) of the ventilation outdoor unit (230). The second connecting wire (500) is connected to the power terminal block (243) of the ventilation outdoor unit (230) and the power 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).

[0056] Figure 6 shows a circuit board (900) provided in the indoor air conditioning unit (130). As shown in Figure 6, the circuit board (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 source (E) via an electric wire. The power circuit (920) is connected to the power terminal (910) by wiring (W1, W2). The power circuit (920) generates the required output power from the input power from the AC power source (E) by converting the AC voltage from the AC power source (E) input via the wiring (W1, W2) to a desired voltage. Various components of the indoor air conditioning unit (130), such as a fan motor (194), are driven by the output power from the power circuit (920).

[0057] The power terminal block (132) is connected to wiring (W3) branched from wiring (W1) and wiring (W4) branched from wiring (W2). The first controller (102) controls the power sent to the power terminal block (132) via wiring (W3, W4) from the input power from the AC power supply (E) by controlling the power circuit (920) to adjust the output power. The power terminal block (132) is connected to the first controller (102) via wiring W (W5). The communication terminal (133) is connected to the first controller (102) via wiring W (W6). A communication circuit (930) is provided in wiring (W5, W6). Wiring (W5, W6) functions as a communication line for the first controller (102) to send and receive control signals.

[0058] As shown in Figures 5 and 6, a portion of the input power from the AC power supply (E), which is the commercial power supply, is input to the power supply circuit (920), and the power supply circuit (920) supplies power to the indoor air conditioning unit (130), causing the indoor air conditioning unit (130) to operate. The power terminal block (132) of the indoor air conditioning unit (130) outputs the remaining portion of the power supplied to the power supply of the indoor air conditioning unit (130).

[0059] The power output from the power terminal block (132) is sent to the power terminal block (243) of the outdoor ventilation unit (230) via the first connecting wire (400). A portion of the power sent to the power terminal block (243) via the first connecting wire (400) is sent to the power circuit (921) of the outdoor ventilation unit (230) to supply power to the outdoor ventilation unit (230), and further sent to the power circuit (922) of the indoor ventilation unit (220) via the second signal line (700) to supply power to the indoor ventilation unit (220). As a result, the outdoor ventilation unit (230) and the indoor ventilation unit (220) begin to operate. Furthermore, a portion of the power sent to the power terminal block (243) of the ventilation outdoor unit (230) via the first connecting wire (400) is sent to the power terminal block (126) of the air conditioning outdoor unit (120) via the second connecting wire (500), and from the power terminal block (126) to the power circuit (923) of the air conditioning outdoor unit (120), thereby supplying power to the air conditioning outdoor unit (120). As a result, the air conditioning outdoor unit (120) starts operating.

[0060] As shown in Figure 5, the first controller (102) (see Figure 4) of the indoor air conditioning unit (130) outputs a first control signal for communication with the outdoor air conditioning unit (120). The first control signal is sent to the outdoor air conditioning unit (120) via the first connecting wire (400), the power terminal block (243) of the outdoor ventilation unit (230), the second connecting wire (500), and the power terminal block (126) of the outdoor air conditioning unit (120). As a result, the second controller (103) (see Figure 4) of the outdoor air conditioning unit (120) performs processing based on the first control signal (for example, switching processing of the four-way switching valve (124)).

[0061] As shown in Figure 5, the first controller (102) (see Figure 4) of the indoor air conditioning unit (130) outputs a second control signal from the communication terminal (133) for communication with the ventilation device (210). The second control signal is sent to the outdoor air conditioning unit (120) via the first signal line (600). As a result, the fourth controller (238) of the outdoor ventilation unit (230) receives the second control signal via 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 to the indoor air conditioning unit (130) has been turned on or off. Processing based on the second control signal includes, for example, the process of operating the ventilation device (210) in conjunction with the operation of the indoor air conditioning unit (130).

[0062] The fourth controller (238) of the outdoor ventilation unit (230) communicates with the third controller (226) of the indoor ventilation unit (220) via the second signal line (700). For example, when an operation signal for the ventilation device (210) is input to the reception unit (221) from the remote control of the ventilation device (210), the third controller (226) of the outdoor ventilation unit (230) transmits the operation signal to the outdoor ventilation unit (230) via the second signal line (700) from the communication terminal (224). When the fourth controller (238) of the outdoor ventilation unit (230) receives the operation signal from the second communication terminal (237), it performs processing based on the operation signal (for example, the process of rotating the fan (240) with the first motor (232) to send outside air to the indoor ventilation unit (220)). Furthermore, 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).

[0063] (4) Configuration of the first connecting wire, the second connecting wire, and the power terminal block of the outdoor ventilation unit As shown in Figures 5 and 7, the first connecting wire (400) comprises a first power line (410) and a second power line (420) for transmitting power, and a first communication line (430) for transmitting a first control signal. The second connecting wire (500) comprises a third power line (510) and a fourth power line (520) for transmitting power, and a second communication line (530) for transmitting a first control signal.

[0064] As shown in Figure 5, the power terminal block (243) of the ventilation outdoor unit (230) includes a first terminal block (300) and a second terminal block (350).

[0065] As shown in Figures 7 to 9, the first terminal block (300) comprises a first housing (305), a first input terminal (306), and a first output terminal (307). The first input terminal (306) comprises a first input section (311), a second input section (312), and a third input section (313). The first output terminal (307) comprises a first output section (321), a second output section (322), and a third output section (323).

[0066] The first enclosure (305) is provided with first input sections (311) to third input sections (313) and first output sections (321) to third output sections (323). Within the first enclosure (305), the first input section (311) is electrically connected to the first output section (321), the second input section (312) is electrically connected to the second output section (322), and the third input section (313) is electrically connected to the third output section (323). The first output sections (321) to third output sections (323) are each provided in two rows in the depth direction of the first enclosure (305) (see Figure 9).

[0067] The second terminal block (350) has a similar configuration to the first terminal block (300), except that the input / output configuration is reversed. The second terminal block (350) comprises a second enclosure (355), a second output terminal (356), and a second input terminal (357). The second output terminal (356) comprises a fourth output section (361), a fifth output section (362), and a sixth output section (363). The second input terminal (357) comprises a fourth input section (371) electrically connected to the fourth output section (361), a fifth input section (372) electrically connected to the fifth output section (362), and a sixth input section (373) electrically connected to the sixth output section (363).

[0068] The power terminal block (243) further comprises a first power wiring (810), a second power wiring (820), a third power wiring (830), a fourth power wiring (840), and a control signal wiring (850). The first power wiring (810) is electrically connected to the first output section (321) of the first terminal block (300) and the fourth input section (371) of the second terminal block (350). The second power wiring (820) is electrically connected to the second output section (322) of the first terminal block (300) and the fifth input section (372) of the second terminal block (350). The third power wiring (830) is electrically connected to the first output section (321) of the first terminal block (300) and the circuit board (244) of the outdoor ventilation unit (230). The fourth power wiring (840) is electrically connected to the second output section (322) of the first terminal block (300) and to the circuit board (244) of the outdoor ventilation unit (230). The control signal wiring (850) is electrically connected to the third output section (323) of the first terminal block (300) and to the sixth input section (373) of the second terminal block (350).

[0069] The first connecting wire (400) is electrically connected to the first input terminal (306) of the first terminal block (300). The first power line (410) of the first connecting wire (400) is electrically connected to the first input section (311) of the first input terminal (306), the second power line (420) is electrically connected to the second input section (312), and the first communication line (430) is electrically connected to the third input section (313).

[0070] The second connecting wire (500) is electrically connected to the second output terminal (356) of the second terminal block (350). The third power line (510) of the second connecting wire (500) is electrically connected to the fourth output section (361) of the second output terminal (356), the fourth power line (520) is electrically connected to the fifth output section (362), and the second communication line (530) is electrically connected to the sixth output section (363).

[0071] (5) Operation of the power terminal block of the outdoor ventilation unit As shown in Figures 5 and 7, the power output from the power terminal block (132) of the indoor air conditioning unit (130) is sent to the first terminal block (300) of the outdoor ventilation unit (230) via the first power line (410) and the second power line (420). A portion of the power sent to the first terminal block (300) is sent to the various components of the ventilation device (210) via the third power wiring (830) and the fourth power wiring (840), and is consumed by the various components of the ventilation device (210). Another portion of the power sent to the first terminal block (300) is sent to the outdoor air conditioning unit (120) via the first power wiring (810), the second power wiring (820), the second terminal block (350), the third power line (510), and the fourth power line (520), and is consumed by the outdoor air conditioning unit (120).

[0072] As shown in Figures 5 and 7, the first control signal, which is output from the power terminal block (132) of the indoor air conditioning unit (130) and addressed to the outdoor air conditioning unit (120), is sent to the outdoor air conditioning unit (120) via the first communication line (430), the first terminal block (300), the control signal wiring (850), and the second communication line (530). As a result, the fourth controller (238) of the outdoor air conditioning unit (120) performs processing based on the first control signal.

[0073] (6) An example of the operation of the first controller of the indoor unit of the air conditioner An example of the operation of the first controller (102) of the air conditioning indoor unit (130) will be described with reference to Figures 5 and 10. Figure 10 is a flowchart showing an example of the operation of the first controller (102) of the air conditioning indoor unit (130).

[0074] As shown in Figures 5 and 10, in step S1, the first controller (102) determines whether or not the ventilation device (210) is operating. The operation of the ventilation device (210) indicates that the ventilation device (210) is consuming power by rotating the fan (240) (see Figure 1) to perform ventilation.

[0075] If the first controller (102) determines that the ventilation device (210) is not operating, the process proceeds to step S2.

[0076] When the first controller (102) determines that the ventilation device (210) is operating, the process moves to step S3.

[0077] In step S2, the first controller (102) sets the upper limit of the power consumption of the indoor air conditioning unit (130) to a first predetermined value. The first predetermined value is set to a value that prevents the circuit breaker from tripping, without considering the power consumption of the ventilation device (210) when setting the power consumption of the indoor air conditioning unit (130). As a result, the first controller (102) operates so that the power consumption of the indoor air conditioning unit (130) does not exceed the first predetermined value.

[0078] Once the process shown in step S2 is completed, the process moves on to step S1.

[0079] In step S3, the first controller (102) sets the upper limit of the power consumption of the indoor air conditioning unit (130) to a second predetermined value that is lower than the first predetermined value (second predetermined value < first predetermined value). The second predetermined value is set to a value that does not trip the circuit breaker, while taking into account the power consumption of the ventilation device (210) when setting the power consumption of the indoor air conditioning unit (130). The difference between the first predetermined value and the second predetermined value is set based on the power consumption of the ventilation device (210), and is set to a value that is approximately the same as, or slightly larger than, the upper limit of the power consumption of the ventilation device (210). For example, if the first predetermined value is set to 1500W and the upper limit of the power consumption of the ventilation device (210) is 200W, the second predetermined value is set to 1300W. As a result, the first controller (102) operates so that the power consumption of the indoor air conditioning unit (130) does not exceed the second predetermined value.

[0080] Once the process shown in step S3 is completed, the process moves to step S1.

[0081] (7) Effects of the embodiment As described above, the ventilation device (210) is equipped with a power terminal block (243). The power terminal block (243) is equipped with a first input terminal (306) that receives power from the air conditioning indoor unit (130) and a second output terminal (356) that outputs power to the air conditioning outdoor unit (120). Power is supplied to the first motor (232), etc., of the ventilation device (210) via the power terminal block (243). By configuring the ventilation device (210) so that power is branched and supplied to the air conditioning outdoor unit (120) and the first motor (232), etc., of the ventilation device (210) via the power terminal block (243), there is no need to add a power supply for the ventilation device (210) and there is no need to change the power supply configuration of the air conditioning indoor unit (130), so the ventilation device (210) can be easily installed.

[0082] The first controller (102) of the air conditioner (110) changes the upper limit of the power consumption of the air conditioner (110) according to the power consumption of the ventilation device (210). As a result, even if the ventilation device (210) is used in addition to the air conditioner (110), it is possible to prevent the commercial power circuit breaker from tripping.

[0083] (8) First variation In the first modified example, power is supplied from the outdoor air conditioning unit (120) to the ventilation device (210) and the indoor air conditioning unit (130). In this case, the outdoor air conditioning unit (120) is supplied with power from the power grid, the first input terminal (306) of the power terminal block (243) of the ventilation device (210) receives power from the outdoor air conditioning unit (120), and the second output terminal (356) of the power terminal block (243) outputs power to the indoor air conditioning unit (130). Power is also supplied to the first motor (232), etc., of the ventilation device (210) via the power terminal block (243) of the ventilation device (210).

[0084] (9) Second variation In this embodiment, the power terminal block (243) of the ventilation outdoor unit (230) has a first terminal block (300) and a second terminal block (350) that are configured separately. However, the present invention is not limited to this. The first terminal block (300) and the second terminal block (350) may be configured as a single unit. In this case, the first input terminal (306) of the first terminal block (300) and the second output terminal (356) of the second terminal block (350) are provided in the same housing, and the first input terminal (306) and the second output terminal (356) are electrically connected within the housing.

[0085] While embodiments have been described above, it will be understood that various modifications to the form and details are possible without departing from the spirit and scope of the claims. Furthermore, the above embodiments, modifications, and other embodiments may be combined or substituted as appropriate, as long as they do not impair the functions covered by this disclosure.

[0086] The designations "1st," "2nd," "3rd," etc., mentioned above are used to distinguish between the terms to which these designations are attached, and do not limit the number or order of those terms. [Industrial applicability]

[0087] This disclosure is useful for ventilation devices and air conditioning systems. [Explanation of symbols]

[0088] 110 Air conditioner 120 Outdoor unit (air conditioner outdoor unit) 130 Indoor unit (Air conditioning indoor unit) 220 Second ventilation unit (indoor ventilation unit) 230 First ventilation unit (outdoor ventilation unit) 232 Blower unit (first motor) 236 Second Input Terminal 243 Power terminal block 306 First Input Terminal 810, 820 1st wiring 830, 840 2nd wiring

Claims

1. A ventilation device that sends outside air into the room, A power terminal block (243) having a first input terminal (306) into which power is input from either the indoor unit (130) or the outdoor unit (120) of an air conditioner (110), A blower unit (232) that generates outside airflow and Equipped with, The blower unit (232) is driven by the power supplied via the power terminal block (243), The power terminal block (243) has an output terminal (356) that outputs the power to the other of the indoor unit (130) and the outdoor unit (120), The ventilation device is a ventilation device that can be retrofitted to the air conditioner (110).

2. In Claim 1, The ventilation device has a casing (225) that displays information indicating the operating status of the ventilation device.

3. In claim 1 or claim 2, The first input terminal (306) of the power terminal block (243) receives input of a first signal for communication between the indoor unit (130) and the outdoor unit (120). The output terminal (356) of the power terminal block (243) is a ventilation device that outputs the first signal.

4. In any one of claims 1 to 3, A ventilation device comprising an indoor unit (130) and a second input terminal (236) to which a second signal for communication with the ventilation device is input.

5. In any one of claims 1 to 4, A first wiring (810, 820) that sends the power from the first input terminal (306) to the output terminal (356), A second wiring (830, 840) that sends power from the first input terminal (306) to the blower unit (232) and A ventilation system equipped with the following features.

6. In any one of claims 1 to 5, The first ventilation unit (230) includes the power terminal block (243) and the blower unit (232), A second ventilation unit (220) including an outside air outlet (22a) for blowing out outside air and Equipped with, The first ventilation unit (230) is a ventilation device that includes a communication terminal (237) for communicating with the second ventilation unit (220).

7. A ventilation device according to any one of claims 1 to 6, The aforementioned air conditioner (110) and An air conditioning system equipped with [specific features / features].

8. In claim 7, The air conditioner (110) is an air conditioning system that changes the upper limit of the power consumption of the air conditioner (110) in accordance with the power consumption of the ventilation device.

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