US20240102687A1 - Electrical device, indoor unit, and air conditioner - Google Patents

Electrical device, indoor unit, and air conditioner Download PDF

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Publication number
US20240102687A1
US20240102687A1 US18/257,333 US202118257333A US2024102687A1 US 20240102687 A1 US20240102687 A1 US 20240102687A1 US 202118257333 A US202118257333 A US 202118257333A US 2024102687 A1 US2024102687 A1 US 2024102687A1
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US
United States
Prior art keywords
electrical device
wiring
chamber
indoor unit
voltage generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US18/257,333
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English (en)
Inventor
Takayuki Seto
Shuhei Tomita
Takeshi Kawamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Assigned to MITSUBISHI ELECTRIC CORPORATION reassignment MITSUBISHI ELECTRIC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SETO, TAKAYUKI, KAWAMURA, TAKESHI, TOMITA, Shuhei
Publication of US20240102687A1 publication Critical patent/US20240102687A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0076—Indoor units, e.g. fan coil units with means for purifying supplied air by electric means, e.g. ionisers or electrostatic separators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling

Definitions

  • the present disclosure relates to an electrical device, an indoor unit, and an air conditioner.
  • Patent Document 1 discloses an air conditioner having a configuration in which a negative ion generation power supply unit board and a negative ion power supply unit are accommodated in a unit casing and the power supply unit and the like are covered with a support casing.
  • various electrical devices are attached to the above-described air conditioner in addition to a negative ion generator.
  • Various electrical devices are respectively provided with connection wirings among the board, the power supply unit, and the device body.
  • the present disclosure has been made in view of the above-described circumstances and an object thereof is to provide an electrical device, an indoor unit, and an air conditioner capable of suppressing damage of wiring and incorrect wiring of the electrical device.
  • An aspect of an electrical device of the present disclosure is an electrical device provided in an indoor unit of an air conditioner, including: a body controller which controls the electrical device; a voltage generator which generates a voltage supplied to the electrical device; a wiring which connects the body controller to the voltage generator; and an electrical device casing which accommodates the body controller and the voltage generator, wherein the electrical device casing includes a wiring chamber in which the wiring is arranged; a first chamber in which the body controller is accommodated and a second chamber in which the voltage generator is accommodated, wherein an inside of the first chamber and an inside of the second chamber are connected to each other through the inside of the wiring chamber.
  • An aspect of an indoor unit of the present disclosure includes: a housing, a heat exchanger accommodated in the housing; an air supply mechanism accommodated in the housing; and the electrical device attached to the housing.
  • An aspect of an air conditioner of the present disclosure includes: the indoor unit; and an outdoor unit which is connected to the indoor unit by a circulation path portion through which a refrigerant circulates.
  • FIG. 1 is a schematic view showing a schematic configuration of an air conditioner according to an embodiment.
  • FIG. 2 is a perspective view showing a schematic configuration of an indoor unit according to the embodiment.
  • FIG. 3 is an exploded perspective view showing a schematic configuration of the indoor unit according to the embodiment.
  • FIG. 4 is an exploded perspective view showing a schematic configuration of an electrical device according to the embodiment.
  • FIG. 5 is a plan view showing a schematic configuration of the inside of the electrical device according to the embodiment.
  • FIG. 6 is a plan view of a cover member of the embodiment.
  • FIG. 7 is a perspective view showing the inside of the electrical device according to the embodiment.
  • a direction parallel to the X axis is called a “front and rear direction (first direction) X”.
  • a direction parallel to the Y axis is called a “width direction (second direction) Y”.
  • a direction parallel to the Z axis is called a “vertical direction Z”.
  • the front and rear direction X, the width direction Y, and the vertical direction Z are directions orthogonal to each other.
  • the side indicated by the arrow +X shown in the drawing is called the front side and the side indicated by the arrow ⁇ X is called the rear side.
  • the side indicated by the arrow+Z shown in the drawing is called the upper side and the side indicated by the arrow ⁇ Z is called the lower side.
  • the front and rear direction X, the width direction Y, and the vertical direction Z are simply names for describing the arrangement relationship of each part, and the actual arrangement relationship is not limited by these names.
  • FIG. 1 is a schematic view showing a schematic configuration of an air conditioner 200 according to an embodiment.
  • the air conditioner 200 is a device utilizing a refrigeration cycle in which a refrigerant 131 circulates.
  • the air conditioner 200 includes an outdoor unit 100 , the indoor unit 1 , and a circulation path portion 130 .
  • the outdoor unit 100 is disposed outdoors.
  • the indoor unit 1 is disposed indoors.
  • the outdoor unit 100 and the indoor unit 1 are connected to each other by the circulation path portion 130 .
  • the circulation path portion 130 includes a conduit through which the refrigerant 131 flows between the outdoor unit 100 and the indoor unit 1 .
  • the air conditioner 200 is capable of adjusting the temperature of the indoor air by exchanging heat between the refrigerant 131 flowing through the circulation path portion 130 and the air of the indoor in which the indoor unit 1 is disposed.
  • the refrigerant 131 for example, a fluorine-based refrigerant or a hydrocarbon-based refrigerant with a low global warming potential (GWP) can be used.
  • GWP global warming potential
  • the outdoor unit 100 includes an outdoor unit housing 109 , a compressor 112 , a heat exchanger 115 , a flow control valve 118 , a fan 114 , a four-way valve 116 , and an electrical unit 117 .
  • the outdoor unit housing 109 constitutes the outer shell of the outdoor unit 100 .
  • the compressor 112 , the heat exchanger 115 , the flow control valve 118 , the fan 114 , the four-way valve 116 , and the electrical unit 117 are accommodated in the outdoor unit housing 109 .
  • the compressor 112 , the heat exchanger 115 , the flow control valve 118 , and the four-way valve 116 are provided in a portion located inside the outdoor unit housing 109 in the circulation path portion 130 .
  • the compressor 112 , the heat exchanger 115 , the flow control valve 118 , and the four-way valve 116 are connected to each other by a portion located inside the outdoor unit housing 109 in the circulation path portion 130 .
  • the compressor 112 is capable of compressing the refrigerant 131 having flowed into the compressor 112 .
  • the compressor 112 may have any structure if the refrigerant 131 is capable of being compressed.
  • the compressor 112 is, for example, a positive displacement rotary compressor.
  • the refrigerant 131 circulates through the circulation path portion 130 by driving the compressor 112 .
  • the heat exchanger 115 is capable of exchanging heat between the refrigerant 131 flowing through the circulation path portion 130 and the air inside the outdoor unit housing 109 .
  • the flow control valve 118 is capable of adjusting the flow rate of the refrigerant 131 flowing through the circulation path portion 130 .
  • the flow control valve 118 is an expansion valve that decompresses the refrigerant 131 flowing through the circulation path portion 130 .
  • the flow control valve 118 is capable of adjusting the flow rate of the refrigerant 131 and the pressure of the refrigerant 131 by adjusting the opening degree using, for example, the electrical unit 117 .
  • the opening degree of the flow control valve 118 is capable of being adjusted in accordance with, for example, the operation state of the indoor unit 1 .
  • the fan 114 is capable of blowing the air that have exchanged heat with the refrigerant 131 by the heat exchanger 115 to the outside of the outdoor unit 100 .
  • the fan 114 sucks air outside the outdoor unit 100 from an air inlet (not shown) provided in the outdoor unit housing 109 into the outdoor unit housing 109 .
  • the air sucked into the outdoor unit housing 109 passes through the heat exchanger 115 and is sucked into the fan 114 .
  • the fan 114 discharges the sucked air toward the air outlet and sends the air from the air outlet to the outside of the outdoor unit 100 .
  • the fan 114 may be any type of fan.
  • the fan 114 is, for example, a propeller fan.
  • the four-way valve 116 is provided in a portion which is connected to the discharge side of the compressor 112 in the circulation path portion 130 .
  • the four-way valve 116 is capable of reversing a direction of the refrigerant 131 flowing through the circulation path portion 130 by switching a part of the circulation path portion 130 .
  • the path connected via the four-way valve 116 is the path indicated by the solid line in the four-way valve 116 of FIG. 1
  • the refrigerant 131 flows through the circulation path portion 130 in the direction indicated by the solid arrow in FIG. 1 .
  • the refrigerant 131 flows through the circulation path portion 130 in the direction indicated by the dashed arrow in FIG. 1 .
  • the electrical unit 117 controls each part of the outdoor unit 100 .
  • the electrical unit 117 is, for example, a system control unit that controls the entire air conditioner 200 .
  • the electrical unit 117 includes a circuit board.
  • the indoor unit 1 can perform a cooling operation of cooling the air of the indoor in which the indoor unit 1 is disposed and a heating operation of heating the air of the indoor in which the indoor unit 1 is disposed.
  • the indoor unit 1 includes a housing 21 , a heat exchanger 22 , and an indoor fan (air supply mechanism) 23 .
  • the heat exchanger 22 and the indoor fan 23 are accommodated in the housing 21 .
  • the heat exchanger 22 is provided in a portion, where is located inside the housing 21 , in the circulation path portion 130 .
  • the heat exchanger 22 is exchangeable heat between the refrigerant 131 flowing through the circulation path portion 130 and the air inside the housing 21 .
  • the heat exchanger 22 may have any structure if the heat is capable of being exchanged between the refrigerant 131 and the air inside the housing 21 .
  • the structure of the heat exchanger 22 may be the same as the structure of the heat exchanger 115 of the outdoor unit 100 or may be different from the structure of the heat exchanger 115 .
  • the indoor fan 23 is an air supply mechanism that is capable of blowing the air having exchanged heat with the refrigerant 131 in the heat exchanger 22 to the outside of the indoor unit 1 .
  • the indoor fan 23 sucks the indoor air into the housing 21 from an air inlet 21 c (see FIG. 2 ) provided in the housing 21 .
  • the air sucked into the housing 21 passes through, for example, the heat exchanger 22 and is sucked into the indoor fan 23 .
  • the indoor fan 23 discharges the sucked air toward an air outlet 21 d (see FIG. 2 ) provided in the housing 21 and sends the air from the air outlet 21 d to the outside of the indoor unit 1 . Accordingly, the air having exchanged heat with the refrigerant 131 by the heat exchanger 22 is blown into the room from the air outlet 21 d .
  • the indoor fan 23 may be any type of blower.
  • the indoor fan 23 may be the same kind of fan as the fan 114 of the outdoor unit 100 or may be the different kind of fan from the fan 114 .
  • the indoor fan 23 is, for example, a cross flow fan.
  • the refrigerant 131 flowing through the circulation path portion 130 flows in the direction indicated by the solid arrow in FIG. 1 . That is, when the indoor unit 1 is in the cooling operation, the refrigerant 131 flowing through the circulation path portion 130 flows in the direction to pass through the compressor 112 , the heat exchanger 115 of the outdoor unit 100 , the flow control valve 118 , and the heat exchanger 22 of the indoor unit 1 in this order and to return to the compressor 112 .
  • the heat exchanger 115 in the outdoor unit 100 functions as a condenser and the heat exchanger 22 in the indoor unit 1 functions as an evaporator.
  • the refrigerant 131 flowing through the circulation path portion 130 flows in the direction indicated by the dashed line in FIG. 1 . That is, when the indoor unit 1 is in the heating operation, the refrigerant 131 flowing through the circulation path portion 130 circulates in the direction to pass through the compressor 112 , the heat exchanger 22 of the indoor unit 1 , the flow control valve 118 , and the heat exchanger 115 of the outdoor unit 100 in this order and to return to the compressor 112 .
  • the heat exchanger 115 in the outdoor unit 100 functions as an evaporator and the heat exchanger 22 in the indoor unit 1 functions as a condenser.
  • FIG. 2 is a perspective view showing a part of the indoor unit 1 of the embodiment.
  • FIG. 3 is an exploded perspective view of the indoor unit 1 according to the embodiment.
  • FIG. 4 is an exploded perspective view of an electrical device 3 according to the embodiment.
  • FIG. 5 is a plan view showing the inside of the electrical device 3 .
  • a decorative panel 24 to be described later is omitted.
  • an upper wall portion of a casing body 31 to be described later is omitted.
  • FIG. 6 is a plan view of a portion in which a voltage generator 14 is disposed in a cover member 70 .
  • the indoor unit 1 is a ceiling-embedded type indoor unit 1 that is capable of being embedded in the indoor ceiling.
  • the lower portion of the indoor unit 1 is arranged along the indoor ceiling and the upper portion of the indoor unit 1 is embedded in the ceiling and fixed to the ceiling.
  • the housing 21 of the indoor unit 1 includes a body portion 21 a and a casing 21 b , the body portion 21 a is fixed to the ceiling, and the casing 21 b has a frame-shape and is fixed below the body portion 21 a .
  • the housing 21 has a substantially prismatic outer shape.
  • the bottom surface of the casing 21 b has a substantially octagonal shape with inclined sides at the four corners of the quadrangle in a plan view.
  • the air outlet 21 d is formed on the bottom surface of the casing 21 b along four main sides extending in the front and rear direction X and the width direction Y.
  • the air inlet 21 c is formed at the center portion of the casing 21 b in a plan view.
  • the air outlet 21 d and the air inlet 21 c open to the interior.
  • the decorative panel 24 is detachably provided on the bottom surface of the casing 21 b .
  • the bottom portion of the indoor unit 1 is covered with the decorative panel 24 allow ventilation and to hide the inside of the housing 21 from being seen.
  • the indoor unit 1 includes the electrical device 3 other than the heat exchanger 22 and the indoor fan 23 .
  • the electrical device 3 is fixed to a support plate 10 which is installed so as to cross the air inlet 21 c of the casing 21 b .
  • the electrical device 3 is provided at a position overlapping a part of the air inlet 21 c in the vertical direction Z. That is, the electrical device 3 is provided on an intake air passage of the indoor unit 1 . In the embodiment, the electrical device 3 is provided below the air inlet 21 c .
  • the electrical device 3 is, for example, an electrostatic precipitator or a negative ion generator. In the embodiment, the electrical device 3 is an electrostatic precipitator.
  • the electrical device 3 includes an electrical device casing 30 which is attached to the housing 21 of the indoor unit 1 .
  • the electrical device 3 includes a body controller 13 , a voltage generator 14 , a wiring 12 , and a filter unit 40 .
  • the electrical device casing 30 includes a casing body 31 , a cover member 70 , and a board cover 32 .
  • the cover member 70 is made of resin and the board cover 32 is made of metal.
  • the casing body 31 is fixed to the housing 21 of the indoor unit 1 via the support plate 10 .
  • the body controller 13 and the voltage generator 14 are attached to the casing body 31 .
  • the casing body 31 includes a first attachment portion (accommodating portion) 33 to which the body controller 13 is attached and a second attachment portion 34 to which the voltage generator 14 is attached.
  • the first attachment portion 33 has a rectangular box shape and is opened downward.
  • the body controller 13 is fixed to the wall portion located on the upper side (+Z side) in the first attachment portion 33 .
  • the body controller 13 includes a control board controlling the operation of the electrical device 3 .
  • the first attachment portion 33 is an accommodating portion which accommodates the body controller 13 .
  • the second attachment portion 34 is located on the front side (+X side) of the first attachment portion 33 .
  • the second attachment portion 34 extends in the width direction Y.
  • the second attachment portion 34 protrudes toward one side (+Y side) of the width direction Yin relation to the first attachment portion 33 .
  • the voltage generator 14 and the transforming unit 15 are arranged side by side in the width direction Y at a portion protruding toward one side of the width direction Yin relation to the first attachment portion 33 in the second attachment portion 34 .
  • the transforming unit 15 is disposed side by side on the other side ( ⁇ Y side) of the width direction Y of the voltage generator 14 .
  • the cover member 70 extends in the width direction Y.
  • the cover member 70 is attached below the second attachment portion 34 .
  • the cover member 70 includes a covering portion 71 which covers the voltage generator 14 from below.
  • the covering portion 71 has a container shape opening upward and accommodates the voltage generator 14 therein.
  • the cover member 70 includes an extending portion 72 which extends from the covering portion 71 toward one side (+Y side) of the width direction Y.
  • the extending portion 72 is attached below a portion that is disposed side by side on the front side (+X side) of the first attachment portion 33 in the second attachment portion 34 .
  • a through-hole 72 a is formed in the extending portion 72 to penetrate the extending portion 72 in the vertical direction Z.
  • the covering portion 71 of the cover member 70 includes: an accommodating portion 74 which accommodates the voltage generator 14 ; and a path portion 78 having a groove shape and opens toward the casing body 31 .
  • the accommodating portion 74 has a container shape and opens downward. In the embodiment, the path portion 78 opens upward.
  • the path portion 78 is located around the accommodating portion 74 .
  • the path portion 78 has a substantially L shape in a plan view.
  • the path portion 78 includes a first path portion 78 a , a second path portion 78 b , and a third path portion 78 c.
  • the first path portion 78 a is located on the rear side ( ⁇ X side) of the accommodating portion 74 .
  • the first path portion 78 a extends in the width direction Y.
  • An end portion on the other side ( ⁇ Y side) of the width direction Yin the first path portion 78 a is located on the other side of the width direction Yin relation to the accommodating portion 74 .
  • An end portion on one side (+Y side) of the width direction Yin the first path portion 78 a is located on one side of the width direction Yin relation to the accommodating portion 74 .
  • an end portion on the other side of the width direction Y of the first path portion 78 a protrudes toward the other side of the width direction Y and is inserted into an opening portion 33 b formed in a side wall portion 33 a of the first attachment portion 33 . That is, the opening portion 33 b is formed along the vertical direction Z and opens to the lower end of the side wall portion 33 a .
  • the side wall portion 33 a is a wall portion which is located on one side (+Y side) of the width direction Y in the wall portion constituting the first attachment portion 33 .
  • An end portion on the other side of the width direction Yin the first path portion 78 a is a first opening portion 75 a which opens to the inside of the first attachment portion 33 .
  • the second path portion 78 b extends from an end portion on one side (+Y side) of the width direction Yin the first path portion 78 a to the front side (+X side). An end portion on the front side of the second path portion 78 b is located on the front side in relation to the accommodating portion 74 .
  • the third path portion 78 c extends from an end portion on the front side of the second path portion 78 b toward the other side ( ⁇ Y side) of the width direction Y. An end portion on the other side ( ⁇ Y side) of the width direction Yin the third path portion 78 c is connected to the front wall portion of the accommodating portion 74 .
  • An end portion on the other side ( ⁇ Y side) of the width direction Y in the third path portion 78 c is a second opening portion 75 b which opens to the inside of the accommodating portion 74 .
  • the dimension of the third path portion 78 c in the width direction Y is smaller than the dimension of the first path portion 78 a in the width direction Y.
  • the voltage generator 14 includes a transforming unit 15 and is configured to boost the electric power supplied from the body controller 13 by the transforming unit 15 and generate the voltage required to operate the electrical device 3 .
  • the voltage generator 14 is configured to adjust the voltage value of a DC voltage in accordance with the operating status of the electrical device 3 .
  • the voltage generator 14 is connected to the body controller 13 by the wiring 12 .
  • the wiring 12 is a bundle wiring including a control wiring connecting the voltage generator 14 and the body controller 13 and a power supply wiring connecting the voltage generator 14 and the body controller 13 .
  • the wiring 12 may be composed of a plurality of unbundled wirings or may be composed of only one wiring.
  • the filter unit 40 extends in the width direction Y
  • the filter unit 40 is attached below the cover member 70 .
  • the filter unit 40 is detachably provided in the cover member 70 .
  • the filter unit 40 is attached to the cover member 70 by the support member 50 .
  • the support member 50 is fixed to the cover member 70 and supports the filter unit 40 from below.
  • the filter unit 40 includes a filter holding portion 41 , a filter 42 , and a dust collecting electrode (not shown).
  • the filter holding portion 41 is a frame which opens toward both sides of the vertical direction Z.
  • the filter 42 is held inside the filter holding portion 41 .
  • the electric power supplied to the indoor unit 1 is supplied to the electrical device 3 .
  • the electric power supplied to the electrical device 3 passes through the body controller 13 , the wiring 12 , the voltage generator 14 , and the transforming unit 15 in this order and is supplied to a connection terminal (not shown) of the filter unit 40 . Accordingly, the electrical device 3 is operated.
  • the electrical device casing 30 includes a first chamber 61 in which the body controller 13 is accommodated, a second chamber 62 in which the voltage generator 14 is accommodated, and a wiring chamber 63 in which the wiring 12 is arranged.
  • the first chamber 61 is formed by the casing body 31 and the board cover 32 . More specifically, the first chamber 61 is formed by closing the opening of the first attachment portion 33 having a box shape opening downward in the casing body 31 with the board cover 32 .
  • the second chamber 62 is formed by the casing body 31 and the cover member 70 . More specifically, the second chamber 62 is formed by closing the opening of the covering portion 71 having a container shape opening upward in the cover member 70 with the second attachment portion 34 of the casing body 31 .
  • the inside of the first chamber 61 and the inside of the second chamber 62 are connected to each other through the inside of the wiring chamber 63 .
  • the wiring chamber 63 is formed by the casing body 31 and the cover member 70 . More specifically, the wiring chamber 63 is formed by closing the upper opening of the path portion 78 having a groove shape with the second attachment portion 34 of the casing body 31 .
  • the wiring chamber 63 is formed in a duct shape extending along the wiring the direction of the wiring 12 . That is, the wiring chamber 63 is formed along the path of the wiring 12 to surround the wiring 12 .
  • the shape of the wiring chamber 63 in a plan view is the same as the shape of the path portion 78 in a plan view. In the embodiment, the shape of the wiring chamber 63 in a plan view is a substantially L shape.
  • the first opening portion 75 a of the path portion 78 is an opening portion that opens to the first chamber 61 in the wiring chamber 63 .
  • the second opening portion 75 b of the path portion 78 is an opening portion that opens to the second chamber 62 in the wiring chamber 63 .
  • the inner wall of the wiring chamber 63 is provided with at least one rib 76 that protrudes into the wiring chamber 63 .
  • the rib 76 is provided in a wall portion that faces a direction orthogonal to the vertical direction Z in the inner wall of the wiring chamber 63 . More specifically, the rib 76 is provided in the inner wall located in the front and rear direction X of the first path portion 78 a of the cover member 70 . In the embodiment, the rib 76 protrudes in a direction intersecting the extension direction of the wiring chamber 63 .
  • the rib 76 includes a first rib 76 a and a second rib 76 b .
  • the first rib 76 a protrudes toward the front side (+X side) from the inner wall 73 a located on the rear side ( ⁇ X side) in the first path portion 78 a .
  • the second rib 76 b protrudes toward the rear side ( ⁇ X side) from the inner wall 73 b located on the front side in the first path portion 78 a .
  • the second rib 76 b is located on one side (+Y side) of the width direction Y in relation to the first rib 76 a.
  • a gap through which the wiring 12 is capable of being inserted is formed between the protruding end of each rib 76 in the front and rear direction X and the inner walls 73 a and 73 b .
  • the first rib 76 a faces the inner wall 73 b in the front and rear direction X with a gap therebetween.
  • the second rib 76 b faces the inner wall 73 a in the front and rear direction X with a gap therebetween.
  • the wiring 12 passes through the gap between the first rib 76 a and the inner wall 73 b and the gap between the second rib 76 b and the inner wall 73 a.
  • the electrical device casing 30 includes the wiring chamber 63 in which the wiring 12 is arranged. Therefore, the wiring 12 disposed in the wiring chamber 63 is capable of being covered with the electrical device casing 30 and exposure of the wiring 12 to the outside of the electrical device 3 can be suppressed. Accordingly, damage of the wiring 12 is capable of being suppressed. Since the body controller 13 and the voltage generator 14 is capable of being connected via the wiring 12 inside the electrical device casing 30 , there is no need to connect the wiring 12 when attaching the electrical device 3 to the housing 21 of the indoor unit 1 . Accordingly, incorrect wiring such as routing of the wiring 12 along an incorrect path does not occur when the electrical device 3 is attached.
  • the electrical device 3 can be easily attached to and detached from the housing 21 . As a result, the installation work and maintenance work of the electrical device 3 can be made more efficient. Since the wiring 12 is accommodated in the wiring chamber 63 , the wiring 12 is not exposed to the outside when the decorative panel 24 is detached. As a result, for example, when cleaning, the wiring 12 is protected and is prevented from contacting other components and the damage of the wiring 12 is prevented.
  • the wiring chamber 63 is formed by the casing body 31 and the cover member 70 .
  • the wiring 12 can be protected inside the wiring chamber 63 by forming the wiring chamber 63 in such a manner that the body controller 13 and the voltage generator 14 are connected by the wiring 12 and then the cover member 70 is attached to the casing body 31 .
  • the cover member 70 covers the voltage generator 14 from below. Therefore, the voltage generator 14 can be protected.
  • These wiring 12 and the voltage generator 14 are capable of being protected from dust and the like. By detachably attaching the cover member 70 to the casing body 31 , the wiring 12 , and the voltage generator 14 is easily exposed. Therefore, the maintenance works of the wiring 12 and the voltage generator 14 are easily performed.
  • the cover member 70 includes the path portion 78 having a groove shape and opens toward the casing body 31 .
  • the wiring chamber 63 is formed by closing the opening of the path portion 78 by the casing body 31 . Therefore, when the indoor unit 1 is attached to the ceiling as in the embodiment, the wiring 12 that hangs downward due to gravity can be received by the path portion 78 having a groove shape and opens upward. Accordingly, for example, when the cover member 70 is detached and attached again for maintenance or the like, the cover member 70 can be attached to the casing body 31 while the wiring 12 is received from below by the path portion 78 provided in the cover member 70 . Thus, the cover member 70 can be easily attached to the casing body 31 while the wiring 12 is accommodated in the wiring chamber 63 .
  • the casing body 31 includes the first attachment portion 33 which is an accommodating portion accommodating the body controller 13 .
  • the opening portion 33 b is provided in the side wall portion 33 a constituting the first attachment portion 33 .
  • One end portion of the path portion 78 is inserted into the opening portion 33 b . Therefore, the wiring 12 is capable of being drawn out directly from the inside of the path portion 78 to the inside of the first attachment portion 33 . Accordingly, interfering with other components by a portion of the wiring 12 routed between the wiring chamber 63 and the first chamber 61 is capable of being suppressed. Therefore, damage to the wiring 12 is capable of being further suppressed.
  • the wiring 12 is capable of being connected to the body controller 13 without bypassing the side wall portion 33 a .
  • the opening portion 33 b has a shape which is notched in the vertical direction Z from the lower end of the side wall portion 33 a . Therefore, the cover member 70 is capable of being attached and detached by an operation of moving the cover member 70 in the vertical direction Z without any interference between the wiring chamber 63 and the side wall portion 33 a when the cover member 70 is attached or detached. As a result, tension is less likely to be applied to the wiring 12 when the cover member 70 is attached or detached.
  • At least one rib 76 protruding into the wiring chamber 63 is provided on the inner walls 73 a and 73 b of the wiring chamber 63 . Therefore, for example, when an unexpected force is applied to the wiring 12 , the force is likely to be received by the rib 76 . Accordingly, tension is not likely to be applied to a connection portion between the body controller 13 and the wiring 12 and a connection portion between the voltage generator 14 and the wiring 12 . Thus, detachment of the wiring 12 from each of the body controller 13 and the voltage generator 14 is capable of being suppressed. Since the rib 76 receives a part of the force applied to the wiring 12 , locally excessive tension is not likely to be applied to the wiring 12 . Therefore, disconnection of the wiring 12 is capable of being suppressed.
  • the ribs 76 are provided as in the embodiment, if the ribs are formed to be separated from each other in the extension direction of the wiring chamber 63 and to alternately protrude from the pair of inner walls facing each other in a direction orthogonal to the extension direction of the wiring chamber 63 , application of excessive tension on the wiring 12 is capable of being suppressed. Additionally, the rib 76 is not an essential component and the rib 76 may not be provided inside the wiring chamber 63 . The number or position of the rib 76 is not limited to the example shown in the drawings. For example, the rib 76 may be provided to protrude in the vertical direction Z from the upper wall portion of the casing body 31 and the cover member 70 . For example, the rib 76 may be provided to protrude in the width direction Y from the inner wall of the second path portion 78 b.
  • the electrical device casing 30 includes the first chamber 61 in which the body controller 13 is accommodated and the second chamber 62 in which the voltage generator 14 is accommodated.
  • the inside of the first chamber 61 and the inside of the second chamber 62 are connected to each other through the inside of the wiring chamber 63 . Therefore, interference with other components by the wiring 12 routed from the body controller 13 to the voltage generator 14 is capable of being suppressed. Thus, damage of the wiring 12 is capable of being further suppressed.
  • an example of a dust collector is shown as an electrical device, but the electrical device is not limited to the dust collector.
  • the electrical device may be a negative ion generator.
  • a negative ion unit is provided instead of the filter unit 40 of the above-described embodiment and the body controller 13 and the voltage generator 14 are attached to the casing body 31 as in the above-described embodiment.
  • the negative ion generator is provided with a negative ion generation needle.
  • the electric power supplied from the power supplier passes through the body controller 13 , the wiring 12 , the voltage generator 14 , and the transforming unit 15 in this order and is supplied to a connection terminal (not shown) of the negative ion generator and a high voltage is supplied to the negative ion generation needle to generate negative ions.
  • a connection terminal not shown
  • the wiring 12 is not exposed to the outside when the decorative panel 24 is detached. As a result, for example, when cleaning, the wiring 12 is protected and is capable of being prevented from contacting other components and the damage of the wiring 12 is capable of being prevented.
  • the shape of the electrical device casing is not limited to the shape of the above-described example.
  • the electrical device casing may be provided with the wiring chamber accommodating the wiring connecting the body controller and the voltage generator and can be appropriately changed in accordance with the shape and arrangement of the body controller and the voltage generator.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
US18/257,333 2021-03-29 2021-03-29 Electrical device, indoor unit, and air conditioner Abandoned US20240102687A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/013196 WO2022208574A1 (ja) 2021-03-29 2021-03-29 電気装置、室内機および空気調和装置

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US20240102687A1 true US20240102687A1 (en) 2024-03-28

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US (1) US20240102687A1 (enrdf_load_stackoverflow)
JP (1) JPWO2022208574A1 (enrdf_load_stackoverflow)
DE (1) DE112021007410T5 (enrdf_load_stackoverflow)
WO (1) WO2022208574A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240011654A1 (en) * 2021-04-02 2024-01-11 Mitsubishi Electric Corporation Electrostatic precipitator, indoor unit, and air conditioner

Citations (2)

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Publication number Priority date Publication date Assignee Title
US20050168907A1 (en) * 2000-08-28 2005-08-04 Sharp Kabushiki Kaisha Air conditioning apparatus and ion generating device for use therein
US20120122389A1 (en) * 2009-07-31 2012-05-17 Kazuyuki Kishimoto Air-conditioning device

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JPS52166800U (enrdf_load_stackoverflow) * 1976-06-11 1977-12-17
JPH0383725U (enrdf_load_stackoverflow) * 1989-12-12 1991-08-26
JP4339496B2 (ja) * 2000-08-30 2009-10-07 東芝キヤリア株式会社 空気調和機
JP5626057B2 (ja) * 2011-03-22 2014-11-19 パナソニック株式会社 空気調和機の室内機
JP5807155B2 (ja) * 2011-04-27 2015-11-10 パナソニックＩｐマネジメント株式会社 空気調和機
CN210787757U (zh) * 2019-06-26 2020-06-19 广西贵港市雄达环保科技有限公司 湿式高压静电自动除尘设备的供电电源

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US20050168907A1 (en) * 2000-08-28 2005-08-04 Sharp Kabushiki Kaisha Air conditioning apparatus and ion generating device for use therein
US20120122389A1 (en) * 2009-07-31 2012-05-17 Kazuyuki Kishimoto Air-conditioning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240011654A1 (en) * 2021-04-02 2024-01-11 Mitsubishi Electric Corporation Electrostatic precipitator, indoor unit, and air conditioner

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WO2022208574A1 (ja) 2022-10-06
DE112021007410T5 (de) 2024-01-18

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