JP2014173827A - Bathroom ventilation air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which a conventional bathroom ventilation air conditioner in which a refrigeration cycle is mounted in a body was not equipped with an inverter drive compressor but equipped with a constant speed compressor; however, in order to be equipped with the inverter drive compressor, the drive circuit needs to be cooled, which raises a problem about arrangement of a circuit cooling part and a cooling method, so that efficient cooling must be aimed to perform without enlarging the body size for circuit cooling.SOLUTION: Cooling of an inverter drive circuit 45 can be achieved by: arranging an electrical equipment box 43 in a position adjacent to a suction side air passage of a blower part 7; accommodating an electrical substrate 44 in it; mounting the inverter drive circuit 45 on the electrical substrate 44; and arranging a circuit cooling part 46 on the rear surface by making it protrude into a suction side air passage of the blower part 7.

Description

  The present invention relates to a ventilation air conditioner that performs ventilation air conditioning of a living space such as a bathroom using a heat pump or the like.

  Conventionally, a ventilation air conditioner for a living space such as a bathroom using a heat pump or the like is used for a living space such as a bathroom such as a heat exchanger such as a compressor, a condenser and an evaporator, a refrigeration cycle portion including a decompressor, etc. A circulation fan and a circulation fan motor for blowing air, a blower part such as a ventilation fan and a ventilation fan motor for exhausting to the outdoors, a control part for controlling operation, and the like are incorporated in the main body (see, for example, Patent Document 1). ).

Japanese Patent Laid-Open No. 2003-343892

  In such a conventional bathroom ventilation air conditioner, it was not necessary to cool the electrical part for those equipped with a constant speed compressor, but it was necessary to cool the electrical part in order to install the inverter compressor In order to mount the cooling mechanism for the electrical part, there is a problem that the main body becomes large.

  This invention solves such a conventional subject, and it aims at providing the bathroom ventilation air conditioner which can implement | achieve further performance improvement and energy-saving improvement by mounting | wearing with an inverter compressor.

  And in order to achieve this object, the present invention circulates the air in the bathroom with a circulating fan and air-conditions it, and in the bathroom ventilation air conditioner that ventilates the air in the other rooms other than the bathroom with the ventilation fan, A circulation inlet having a circulation inlet for sucking in the bathroom air, a circulation blower for circulating the air in the bathroom, a circulation air passage having a circulation outlet for blowing air into the bathroom, and a first ventilation port adjacent to the ventilation section and the first ventilation port communicating with the fan portion. A compressor that compresses the refrigerant, and includes a ventilation air passage that communicates the two ventilation ports, the first ventilation port, and the second ventilation port, and the circulation air passage and the ventilation air passage are partitioned by a main body partition wall A first heat exchanger disposed between the circulation inlet and the circulation blower for exchanging heat between the circulation air and the refrigerant, an expansion mechanism for expanding the refrigerant, and the ventilation air passage. The heat exchange between the ventilation air and the refrigerant A heat exchanger, provided with a refrigerant circuit piped so that the refrigerant circulates in the order of the compressor, the first heat exchanger, the expansion mechanism, and the second heat exchanger, the second in the ventilation air passage A bathroom vent opening / closing means that can open and close the bathroom ventilation opening and the bathroom ventilation opening is provided in the part facing the bathroom between the heat exchanger and the second ventilation opening, and a circulation suction opening opening / closing means that can open and close the circulation suction opening is provided. The body partition is provided with a reheat blower opening and closing means capable of opening and closing the reheat blower opening and the reheat blower opening, the blower part is partitioned by a blower partition between the suction side and the blowout side, and the suction side other than the bathroom The other chamber suction port communicating with at least one exhaust port opened in the other chamber, the first air blowing port communicating with the main body portion, the second air blowing port communicating with the main body portion on the blowing side, and air Ventilation blower to blow air and blow out outdoors A first ventilation port opening / closing means provided with an air outlet and capable of opening / closing the first ventilation port and a second ventilation port opening / closing means capable of opening / closing the second ventilation port are provided, and a 24-hour ventilation port is provided in the blower partition wall. Is provided with a 24-hour ventilation opening / closing means that can be opened and closed, an electrical component is disposed on the suction side of the blower portion, and a cooling device for the inverter drive circuit is disposed in the air passage. Is achieved.

  According to the present invention, the main body portion communicates with the circulation inlet having the circulation inlet for sucking in the air in the bathroom, the circulation fan for circulating the air in the bathroom, and the circulation air passage having the circulation outlet for blowing the air into the bathroom, and the fan portion. A configuration in which a first ventilation port and a second ventilation port adjacent to each other, a ventilation air passage communicating the first ventilation port and the second ventilation port are provided, and the circulation air passage and the ventilation air passage are partitioned by a main body partition wall A compressor that compresses the refrigerant, a first heat exchanger that is disposed between the circulation suction port and the circulation blower and exchanges heat between the circulation air and the refrigerant, an expansion mechanism that expands the refrigerant, and A second heat exchanger disposed in the ventilation air passage for exchanging heat between the ventilation air and the refrigerant, the refrigerant in the order of the compressor, the first heat exchanger, the expansion mechanism, and the second heat exchanger. Provide a refrigerant circuit piped to circulate, and a second heat exchanger in the ventilation air The bathroom vent opening / closing means that can open and close the bathroom ventilation opening and the bathroom ventilation opening is provided in the part facing the bathroom between the two ventilation openings, the circulation suction opening opening / closing means that can open and close the circulation suction opening is provided, Reheat blower opening and closing means that can open and close the heat blower opening and the reheat blower opening are provided, the blower part is partitioned by a blower partition between the suction side and the blowout side, and the suction side is opened to a room other than the bathroom The other chamber suction port that communicates with at least one exhaust port, the first blower port that communicates with the main body portion, the second blower port that communicates with the main body portion on the blowout side, and air for blowing air A ventilation blower and a ventilation outlet that blows out to the outside are provided. A first ventilation opening and closing means that can open and close the first ventilation opening and a second ventilation opening opening and closing means that can open and close the second ventilation opening are provided, and the blower partition wall is ventilated for 24 hours. Open mouth 2 By providing a 24-hour ventilation opening / closing means that can open and close the ventilation opening, an electrical component is disposed on the suction side of the blower portion, and a cooling device for the inverter drive circuit is disposed in the air passage, thereby providing a blower suction side wind. The inverter drive circuit can be cooled by the ventilation air flowing in the road, and the inverter drive circuit can be mounted without increasing the size of the main body, so that further performance improvement and energy saving can be realized.

The sketch which shows installation to the living space of the bathroom ventilation air conditioner in Embodiment 1 of this invention Schematic configuration diagram of the bathroom ventilation air conditioner

  The bathroom ventilation air conditioner according to claim 1 of the present invention is characterized in that the main body portion is provided with a circulation inlet for sucking in the air in the bathroom, the circulation blower for circulating the air in the bathroom, and a circulation outlet for blowing out air into the bathroom. A first ventilation port and a second ventilation port adjacent to each other communicating with the air channel and the blower part; a ventilation air channel communicating the first ventilation port and the second ventilation port; and the circulation air channel and the ventilation air. A path partitioned by a main body partition; a compressor that compresses the refrigerant; a first heat exchanger that is disposed between the circulation suction port and the circulation blower to exchange heat between the circulation air and the refrigerant; and the refrigerant And a second heat exchanger disposed in the ventilation air passage for exchanging heat between the ventilation air and the refrigerant, the compressor, the first heat exchanger, the expansion mechanism, the first Provide a refrigerant circuit piped so that the refrigerant circulates in the order of the two heat exchangers, Bathroom ventilation opening / closing means that can open and close the bathroom ventilation opening and bathroom ventilation opening at the part facing the bathroom between the second heat exchanger and the second ventilation opening in the air duct, and circulation suction that can open and close the circulation intake opening In addition to providing a mouth opening / closing means, the main body partition is provided with a reheat air blowing opening / closing means that can open and close the reheating air blowing opening and the reheating air blowing opening. Is provided with another chamber suction port that communicates with at least one exhaust port that opens to another chamber other than the bathroom, and a first air vent port that communicates with the main body portion, and a first communication port that communicates with the main body portion on the blowout side. Two ventilation openings, a ventilation blower for blowing air, and a ventilation outlet that blows outside, the first ventilation opening and closing means that can open and close the first ventilation opening, and the second ventilation opening and closing that can open and close the second ventilation opening Providing a means and A 24-hour ventilation opening / closing means capable of opening and closing the 24-hour ventilation opening is provided, and an electrical component is disposed on the suction side of the blower portion, and a cooling device for the inverter drive circuit is disposed in the air passage. As a result, the inverter drive circuit can be cooled by the ventilation air flowing in the fan suction side air passage, so that the ventilation air flowing in the fan suction side air passage strikes the cooling device of the inverter drive circuit and takes heat and cools it. Has the effect of

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

(Embodiment 1)
FIG. 1 is a sketch of a living space in which a bathroom ventilation air conditioner according to Embodiment 1 of the present invention is installed. In FIG. 1, an indoor living space 1 is divided into a living room 2, a bathroom 3, a dressing room 4, a toilet 5, and the like. Is installed. A circulation blower 8 is disposed inside the main body portion 6. When the circulation blower 8 is operated, the circulation blower 8 is sucked into the main body portion 6 from a suction port opened on the bathroom 3 side of the main body portion 6, and passes through the circulation blower 8. Then, the air is blown out into the bathroom 3 from the air outlet opened to the bathroom 3 side of the main body portion 6.

  Further, a ventilation fan 9 is disposed inside the fan part 7, and a first exhaust duct 11 that opens to the dressing room 4 and a first exhaust duct 11 that communicates the fan part 7 and a second exhaust that opens to the toilet 5. A second exhaust duct 13 that communicates the opening 12 and the blower part 7 is connected to the suction side of the ventilation fan 9, and a third exhaust duct 14 that communicates the outside and the blower part 7 is connected to the outlet side of the ventilation fan 9. . When the ventilation blower 9 is operated, the air in the dressing room 4 and the toilet 5 is sucked into the ventilation blower 9 from the first exhaust port 10 and the second exhaust port 12 through the first exhaust duct 11 and the second exhaust duct 13, and the third exhaust. It is discharged outside through the duct 14.

  When the ventilation fan 9 is continuously operated, the interior of the living space 1 becomes negative pressure, so fresh outside air is supplied from the air supply opening 15 opened on the wall facing the outside of the living room 2 to ventilate the living space 1. Will be. Since this ventilation operation needs to be performed continuously (ventilation for 24 hours) when the airtightness of the building is high, the ventilation blower 9 has a predetermined ventilation amount, for example, about half the volume of the living space 1 in one hour. Operate continuously to ensure the corresponding ventilation.

  Further, the living room 2 is provided with an air conditioner 16 for controlling the temperature of the room, and the room temperature is appropriately maintained by performing the cooling operation in the summer and the heating operation in the winter. However, as described above, when the ventilation operation is performed continuously throughout the year, the low temperature air cooled by the air conditioner 16 in the living room 2 in the summertime, and the high temperature air heated by the air conditioner 16 in the winter time are in the dressing room 4. The air is sucked into the first exhaust port 10 and the second exhaust port 12 through the louver and undercut portions of the door 17 and the door 18 of the toilet 5, and is discharged to the outside through the blower portion 7 of the bathroom ventilation air conditioner.

  FIG. 2 is an air path configuration diagram and a refrigerant circuit diagram that are the basis of a bathroom ventilation air conditioner installed behind the ceiling of the bathroom 3.

  The main body 6 includes a circulation fan 8 that circulates the air in the bathroom, a circulation inlet 19 and a circulation outlet 20 that open in the bathroom 3, and a circulation inlet opening / closing means 22 that opens and closes the bathroom ventilation hole 21 and the circulation inlet 19. A bathroom vent opening / closing means 23 for opening / closing the bathroom ventilation opening 21, a first ventilation opening 24 connected to the blower part 7, a second ventilation opening 25, and a first ventilation opening opening / closing means for opening / closing the first ventilation opening 24. 26, the second ventilation opening / closing means 27 for opening and closing the second ventilation opening 25, the ventilation air passage 28 formed between the first ventilation opening 24 and the second ventilation opening 25, and the circulation with the ventilation air passage 28 Between the reheat blower port 29 for communicating with the blower 8, the reheat blower opening / closing means 30 for opening and closing the reheat blower port 29, the compressor 31 for compressing the refrigerant, the circulation suction port 19 and the circulation blower 8. A first heat exchanger 32 arranged to exchange heat between the circulating air and the refrigerant; An expansion mechanism 33 that expands the medium, and a second heat exchanger 34 that is disposed in the ventilation air passage 28 and exchanges heat between the ventilation air and the refrigerant, include a compressor 31, a first heat exchanger 32, and an expansion mechanism 33. The second heat exchanger 34 forms a refrigerant circuit in which refrigerant is circulated in order, and the blower portion 7 is a ventilation blower 9 that draws air from the bathroom 3 and other rooms, such as the dressing room 4 and the toilet 5. And another room suction port 35 that connects the first exhaust duct 11 that transports the air sucked from the dressing room 4, and another room suction port 36 that connects the second exhaust duct 13 that transports the air sucked from the toilet 5. A ventilation blower outlet 37 for connecting the third exhaust duct 14 for conveying the exhausted air to the outdoors, a first blower port 38 connected to the main body portion 6, a second blower port 39, and the blower portion 7. 40 and opened in the blower partition A 4-hour ventilation port 41 and a 24-hour ventilation port opening / closing means 42 for opening and closing the 24-hour ventilation port, and the main body portion 6 and the blower portion 7 are configured separately and connected to each other; The circulation inlet opening / closing means 22 is opened, the bathroom ventilation opening / closing means 23 is closed, the first ventilation opening / closing means 26 is opened, the second ventilation opening / closing means 27 is opened, and the reheat air blowing opening / closing means 30 is opened. By closing the 24-hour ventilation port opening / closing means 42, the air sucked from the dressing room 4 and the toilet 5 by the ventilation fan 9 is introduced from the first ventilation port 24 into the ventilation air passage 28 in the main body portion 6, After exchanging heat by passing through the second heat exchanger 34, it can be reintroduced into the blower portion 7 through the second ventilation port 25 and exhausted to the outside through the ventilation outlet 37. Dressing room 4 and heat collected by the heat exchanger 34 The interior of the bathroom 3 can be heated by carrying the heat of the toilet 5 to the first heat exchanger 32 and dissipating the heat into the bathroom 3, and the first ventilation opening / closing means 26 is closed, and the second ventilation opening / closing means 27 is closed. Is closed and the ventilation opening / closing means 42 is opened for 24 hours. When performing an operation other than the heating operation in which it is not necessary to recover heat from the ventilation air, the ventilation fan is not introduced into the main body portion 6. The air can be exhausted directly from the part 7 to the outside, the pressure at the time of passing through the heat exchanger is not lost, and the efficiency during the ventilation can be improved. The bathroom vent opening / closing means 23 is opened and the first ventilation opening / closing means 26 is opened. By opening the second ventilation opening / closing means 27 and opening the ventilation opening / closing means 42 for 24 hours, the air in the bathroom 3 can be exhausted to the outside, the circulation inlet opening / closing means 22 is closed, and the bathroom ventilation Opening and closing means 23, first ventilation opening and closing means 2 Is closed, the second ventilation opening / closing means 27 is closed, and the reheat air blowing opening / closing means 30 is opened, so that the air in the bathroom 3 is sucked into the main body portion 6 from the bathroom ventilation opening 21, and the second heat exchanger 34, By blowing air in the order of the reheat blower port 29, the first heat exchanger 32, the circulation blower 8, and the circulation blower outlet 20, the inside of the bathroom 3 can be reheated and dehumidified.

  When the compressor 31 is driven by an inverter, an inverter drive circuit 45 is mounted on an electrical board 44 accommodated in an electrical box 43 installed outside the blower portion 7, and these components generate heat to cool down. It is necessary to provide the circuit cooling unit 46 on the back surface of the electrical board 44, and this circuit cooling unit 46 projects into the suction immediate air path between the other chamber suction ports 35, 36 and the first blower port 38 of the blower portion 7. By arranging them, the inverter drive circuit 45 can be cooled.

  By adopting such a configuration, the inverter drive circuit 45 is provided in the blower portion 7 so that the inverter drive circuit can be mounted without increasing the size of the main body, and further inverter conversion improves performance and saves energy. The improvement of property can be realized.

  The contents described above are only described for one mode for carrying out the invention, and the present invention is not limited to the above embodiment.

  For example, in the present embodiment, the electrical box 43 is arranged on the side surface of the blower portion 7, but may be arranged on the top surface or bottom surface of the blower portion 7 as long as the position faces the suction side air passage. , No difference in its effects.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a bathroom ventilation air conditioner that further improves performance and saves energy by mounting an inverter on a compressor without increasing the size of the main body.

DESCRIPTION OF SYMBOLS 1 Living space 2 Living 3 Bathroom 4 Dressing room 5 Toilet 6 Main body part 7 Blower part 8 Circulating fan 9 Ventilation fan 10 1st exhaust port 11 1st exhaust duct 12 2nd exhaust port 13 2nd exhaust duct 14 3rd exhaust duct 15 Air supply port 16 Air conditioner 17 Door 18 Door 19 Circulation suction port 20 Circulation outlet 21 Bathroom ventilation port 22 Circulation suction port opening / closing means 23 Bathroom ventilation port opening / closing means 24 First ventilation port 25 Second ventilation port 26 First ventilation port opening / closing Means 27 Second ventilation port opening / closing means 28 Ventilation air passage 29 Reheat blower opening 30 Reheat blower opening / closing means 31 Compressor 32 First heat exchanger 33 Expansion mechanism 34 Second heat exchanger 35 Other chamber suction port 36 Other chamber Suction port 37 Ventilation air outlet 38 First air outlet 39 Second air outlet 40 Blower partition 41 24-hour ventilation port 42 24-hour ventilation port opening / closing means 43 Electrical box 44 Instrumentation substrate 45 inverter drive circuit 46 circuit cooling unit

Claims (1)

In a bathroom ventilation air conditioner that circulates the air in the bathroom with a circulation fan and air-conditions it, and ventilates the air in other rooms other than the bathroom with a ventilation fan, the main body part has a circulation inlet for sucking in the bathroom air and the air in the bathroom A circulating air passage having a circulation blower for circulating air, a circulation air outlet for blowing air to the bathroom, an adjacent first ventilation port and a second ventilation port communicating with the blower portion, the first ventilation port and the second A ventilation air passage that communicates with a ventilation port is provided, and the circulation air passage and the ventilation air passage are partitioned by a main body partition wall, and a compressor that compresses refrigerant, and between the circulation suction port and the circulation blower. A first heat exchanger disposed to exchange heat between the circulating air and the refrigerant; an expansion mechanism that expands the refrigerant; a second heat exchanger disposed in the ventilation air passage to exchange heat between the ventilation air and the refrigerant; The compressor, the first heat exchange A refrigerant circuit piped so that the refrigerant circulates in the order of the heat exchanger, the expansion mechanism, and the second heat exchanger, facing the bathroom between the second heat exchanger and the second ventilation port in the ventilation air passage The bathroom ventilation opening and opening means that can open and close the bathroom ventilation opening and the bathroom ventilation opening are provided in the part, the circulation suction opening opening and closing means that can open and close the circulation suction opening is provided, and the reheat ventilation opening and the reheating ventilation opening can be opened and closed on the main body partition The reheat blower opening / closing means is provided, and the blower part is divided into a blower partition between the suction side and the blowout side, and the other side of the suction side communicates with at least one exhaust opening opened to another room other than the bathroom. A suction port and a first blower port communicating with the main body portion are provided, a second blower port communicating with the main body portion on the blowout side, a ventilation blower for blowing air, and a ventilation blowout port that blows out outdoors The first that can open and close the first ventilation opening The air vent opening and closing means and the second ventilation opening and closing means that can open and close the second ventilation opening are provided, and the air blower partition wall is provided with a 24-hour ventilation opening and the 24-hour ventilation opening and closing means that can be opened and closed. A bathroom ventilation air conditioner characterized in that an electric part is arranged on the suction side of the blower part and a cooling device of an inverter drive circuit is arranged in an air passage.

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