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US20170336082A1 - Air-conditioning apparatus - Google Patents

Air-conditioning apparatus Download PDF

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Publication number
US20170336082A1
US20170336082A1 US15/528,787 US201515528787A US2017336082A1 US 20170336082 A1 US20170336082 A1 US 20170336082A1 US 201515528787 A US201515528787 A US 201515528787A US 2017336082 A1 US2017336082 A1 US 2017336082A1
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US
United States
Prior art keywords
air
infrared sensor
floor surface
air direction
conditioning apparatus
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
US15/528,787
Other languages
English (en)
Inventor
Masahiro Kamijo
Kiyoshi Yoshimura
Masahiko Takagi
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
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
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: YOSHIMURA, KIYOSHI, TAKAGI, MASAHIKO, KAMIJO, MASAHIRO
Publication of US20170336082A1 publication Critical patent/US20170336082A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • 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
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F24F11/0012—
    • F24F11/0078—
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F2001/0037—
    • F24F2011/0035—
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0616—Outlets that have intake openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F24F2120/12—Position of occupants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F24F2120/14—Activity of occupants
    • 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
    • F24F2221/32—Details or features not otherwise provided for preventing human errors during the installation, use or maintenance, e.g. goofy proof

Definitions

  • the present invention relates to an air-conditioning apparatus, and particularly to a setting of an installation position of an infrared sensor of an air-conditioning apparatus.
  • Patent Literature 1 discloses an air-conditioning apparatus that performs an efficient air-conditioning operation by recognizing a mounting position of the air-conditioning apparatus itself in a room based on a temperature distribution output by an infrared sensor.
  • Patent Literature 2 discloses an air-conditioning apparatus in which an infrared sensor installed thereto has a fixed standard installation position. When the installation position of the air-conditioning apparatus is changed, an operation of making correspondence between the installation position and a control of an air-conditioning operation is performed by using a mark or the like.
  • Patent Literature 1 Japanese Examined Patent Application Publication No. 7-113472
  • Patent Literature 2 Japanese Unexamined Patent Application Publication No. 2012-83077
  • the air-conditioning apparatus in Patent Literature 1 has a fixed installation position of the infrared sensor, and thus has a problem that the installation position of the infrared sensor in the air-conditioning apparatus is unchangeable.
  • Patent Literature 2 has a problem that a person needs to memorize the installation position and perform an operation of setting and registering the information of the installation position with a remote controller, which is troublesome and creates a possibility of erroneous setting.
  • the present invention has been made to solve the problems as described above, and aims to provide an air-conditioning apparatus capable of automatically determining an installation position of an infrared sensor and facilitating making correspondence between an air direction control vane and a temperature detection area.
  • An air-conditioning apparatus related to the present invention includes: a cabinet including therein a heat exchanger and a fan, having a lower surface with an opening, and installed to a ceiling; a square decorative panel larger than the opening of the cabinet, having an air inlet in a central part thereof, and installed to cover the opening of the lower surface of the cabinet; air outlets disposed at four places around the air inlet along four sides of the decorative panel; air direction vanes provided in the air outlets, and independently adjustable in angle for the respective air outlets; an infrared sensor capable of detecting a floor surface temperature for each of divided areas quartered in a circumferential direction; and a controller.
  • the infrared sensor is installed to one of four corners of the decorative panel, and is configured such that a facing direction of an installation reference of the infrared sensor varies depending on each of four corners installed with the infrared sensor.
  • the controller controls one of the air direction vanes so as to blow out an airflow toward a floor surface from one of the air outlets and the air-conditioning apparatus to perform a heating operation or a cooling operation, performs a determination to determine an installation position of the infrared sensor from one of the divided areas in which a temperature difference between the floor surface temperature before an operation of the one of the air direction vanes and the floor surface temperature during the operation of the one of the air direction vanes detected with the infrared sensor equals or exceeds a specified value, a disposition position of the one of the air direction vanes set to blow out the airflow toward the floor surface, and the installation reference of the infrared sensor, and makes the one of the divided areas in which the difference between the floor surface temperatures equals or exceeds the specified value correspond to the one of the
  • the operation of making correspondence between the detection range of the infrared sensor and the air direction control vane is automated regardless of the installation position of the infrared sensor, therefore making settings easy, preventing erroneous setting, and obtaining correct operations of the infrared sensor and air direction control.
  • FIG. 1 is a perspective view illustrating an overall configuration of an air-conditioning apparatus in Embodiment 1.
  • FIG. 2 is a diagram illustrating a cross section of an I-I part of the air-conditioning apparatus in FIG. 1 .
  • FIG. 3 is a bottom view of the air-conditioning apparatus in FIG. 1 .
  • FIG. 4 is a diagram simplifying FIG. 3 and illustrating directions of detection areas in a case in which an infrared sensor is installed to each of corners.
  • FIG. 5 is a bottom view when the infrared sensor is installed to a corner C 2 .
  • FIG. 6 is a flowchart of a control in Embodiment 1.
  • FIG. 7 is a flowchart of a control in Embodiment 2.
  • FIG. 1 is a perspective view illustrating an overall structure of an air-conditioning apparatus in Embodiment 1.
  • the air-conditioning apparatus according to Embodiment 1 is installed as concealed in a ceiling or suspended from a ceiling.
  • An air-conditioning apparatus 50 is formed of a box-shaped cabinet 1 having a lower surface with an opening and a square decorative panel 2 installed to cover the opening of the lower surface of the cabinet 1 and larger than the opening of the cabinet 1 .
  • the decorative panel 2 is provided with a substantially square air inlet 3 at a central part thereof.
  • Air outlets 4 a to 4 d (these will hereinafter occasionally be described collectively as the air outlets 4 ) are provided around four sides of this air inlet 3 to surround the air inlet 3 .
  • the air outlets 4 a to 4 d are respectively provided with air direction vanes 5 a to 5 d (these will hereinafter occasionally be described collectively and simply as the air direction vanes 5 ), which are air guiding means for changing the air direction to the upward or downward direction.
  • the directions of air blown out of the respective air outlets 4 are set to face four directions spaced at intervals of 90 degrees in a plan view of the air-conditioning apparatus 50 as viewed from below.
  • Corner panels 2 a to 2 d are attachably and detachably installed to corners of the decorative panel 2 .
  • one of corners (corner portions) of a lower surface of the decorative panel 2 (a corner C 1 , for example) is installed with an infrared sensor 6 that detects radiation temperatures in a plurality of areas of airflows blown out of the air outlets 4 or detects presence of a person with a human body sensor.
  • the installation position of the infrared sensor 6 is not limited to the illustrated position.
  • the infrared sensor 6 may be installed at a preferable position in any one of corners C 1 to C 4 of the lower surface of the decorative panel 2 in accordance with the layout of a room and other factors.
  • FIG. 2 is a diagram illustrating a cross section of an I-I part of the air-conditioning apparatus 50 in FIG. 1 .
  • An electric motor 7 is provided at a central part of a top surface inside the cabinet 1 , with an output shaft facing down.
  • the output shaft is installed with a centrifugal fan 8 , and a heat exchanger 9 is installed to surround this fan 8 .
  • an air passage 17 is formed around the outer circumference of the heat exchanger 9 to surround the heat exchanger 9 .
  • An internal cover 10 is disposed outside the air passage 17 to separate heat-exchanged air from the air outside the air-conditioning apparatus 50 .
  • a drain pan 11 is disposed under the heat exchanger 9 to receive condensed water generated by heat exchange between air and refrigerant in the heat exchanger 9 and form a part of the air passage 17 .
  • the decorative panel 2 is disposed under this drain pan 11 .
  • the air inlet 3 provided in the decorative panel 2 communicates with an air inlet of the fan 8 .
  • the air passage 17 formed by the internal cover 10 and the drain pan 11 communicates with the air outlets 4 .
  • An air filter 12 for preventing dust and other substances from entering the interior of the air-conditioning apparatus 50 is installed to the air inlet 3 provided in the decorative panel 2 , and a grille 13 supporting the air filter and functioning as a blind is provided outside this air filter 12 . Further, a bell mouth 14 for smoothly guiding the air suctioned from the air inlet 3 to the fan 8 and a suction temperature sensor 15 for detecting a suction temperature are provided between the air filter 12 and the fan 8 .
  • the decorative panel 2 is connected to a remote controller 16 (equivalent to a controller of the invention of the present application), and the remote controller 16 controls the operation of the air-conditioning apparatus 50 .
  • the remote controller 16 performs an operation control of the electric motor 7 , that is, an operation control of the fan 8 and operation controls such as the setting of the opening degrees of the air direction vanes 5 in the air outlets 4 .
  • the remote controller 16 is formed of a control unit 19 and other units.
  • the remote controller 16 may further include a display unit 20 and an operation unit 18 .
  • This remote controller 16 is not limited to a wired one, and may be configured to wirelessly emit electrical signals. If the installation position of the infrared sensor 6 is changed in the air-conditioning apparatus 50 , this remote controller 16 is operated to detect the installation position.
  • FIG. 3 is a bottom view of the air-conditioning apparatus 50 in FIG. 1 .
  • the infrared sensor 6 is installed to the corner C 1 .
  • This state illustrates a standard installation position of the infrared sensor 6 at the time of shipment of the decorative panel 2 by a manufacturer (an initial state).
  • FIG. 4 is a diagram simplifying FIG. 3 and illustrating directions of a detection area A in a case in which the infrared sensor 6 is installed to each of the corners.
  • the detection area A of the infrared sensor 6 is quartered into detection areas A 1 to A 4 (equivalent to divided areas of the invention of the present application).
  • the infrared sensor 6 has a fixed installation direction according to each corner when installed to one of the corners. For example, assuming the infrared sensor 6 is installed to each of the corners, the detection area A 1 faces four directions different from one another every 90 degrees.
  • the infrared sensor 6 in Embodiment 1 is, for example, integrated with the corner panel 2 a , and an installation reference is provided at a corner of an inside (on the side of the air inlet 3 ) of the corner panel 2 a .
  • the infrared sensor 6 is also installed to be located at the corner of the inside with the use of the installation reference.
  • the infrared sensor 6 is thereby installed to face the four directions different from one another every 90 degrees at the respective corners.
  • the installation direction is different for each position at which the infrared sensor 6 is installed, and the installation position is detectable if the infrared sensor faces directions different from one another by an angle allowing the infrared sensor to detect that the installation direction is different.
  • the infrared sensor 6 is installed such that the center of the detection area A 1 of the infrared sensor 6 faces the upward direction in FIG. 4 (the direction of a side of four sides of the square decorative panel 2 disposed with the air direction vane 5 a ).
  • a detection area A 2 , a detection area A 3 , and a detection area A 4 are sequentially arranged in the counterclockwise direction at intervals of 90 degrees.
  • the air direction vane 5 corresponding to the detection area A 1 detected by the air-conditioning apparatus 50 is the air direction vane 5 a . It is therefore unnecessary to use an installation position detection function of the infrared sensor 6 .
  • the infrared sensor 6 When the infrared sensor 6 is installed to the corner C 2 , the infrared sensor 6 is installed such that the center of the detection area A 1 faces the left direction in FIG. 4 (the direction of a side disposed with the air direction vane 5 b ).
  • the air direction vane corresponding to the detection area A 1 detected by the air-conditioning apparatus 50 is the air direction vane 5 a , which is different from the air direction vane 5 b as the air direction vane actually desired to be made to correspond to the facing direction of the detection area A 1 .
  • the infrared sensor 6 When the infrared sensor 6 is installed to the corner C 3 , the infrared sensor 6 is installed such that the center of the detection area A 1 faces the downward direction in FIG. 4 (the direction of a side disposed with the air direction vane 5 c ).
  • the air direction vane corresponding to the detection area A 1 detected by the air-conditioning apparatus 50 is the air direction vane 5 a , which is different from the air direction vane 5 c as the air direction vane actually desired to be made to correspond to the facing direction of the detection area A 1 .
  • the infrared sensor 6 When the infrared sensor 6 is installed to the corner C 4 , the infrared sensor 6 is installed such that the center of the detection area A 1 faces the downward direction in FIG. 4 (the direction of a side disposed with the air direction vane 5 d ).
  • the air direction vane corresponding to the detection area A 1 detected by the air-conditioning apparatus 50 is the air direction vane 5 a , which is different from the air direction vane 5 d as the air direction vane actually desired to be made to correspond to the facing direction of the detection area A 1 .
  • the detection areas A 2 to A 4 are also sequentially arranged in the counterclockwise direction at intervals of 90 degrees when the infrared sensor 6 is installed to the corners C 2 to C 4 . If the air direction vane 5 corresponding to the detection area A is different from the actually desired one, as described above, it is necessary to change the corresponding air direction vane 5 by using the installation position detection function.
  • FIG. 5 is a bottom view when the infrared sensor 6 is installed to the corner C 2 .
  • This drawing illustrates the detection areas when the infrared sensor 6 is installed to the corner C 2 .
  • the infrared sensor 6 is rotatable about an axis in the vertical direction by 360 degrees (rotatable by 360 degrees in the plane of FIG. 5 ) by a motor (not illustrated).
  • the sensor with a certain viewing angle rotates about the axis in the vertical direction and is capable of detecting, for example, a temperature distribution around the entire circumference.
  • the detection area of the infrared sensor 6 is divided at intervals of 90 degrees in the circumferential direction, and the four detection areas A 1 to A 4 are set, as illustrated in FIG. 5 .
  • the division into the detection areas A 1 to A 4 is performed by quartering with lines parallel to the directions of the diagonals of the square decorative panel 2 , but is not limited thereto. If the division is performed in other directions, however, the relationship between the detection area A and the direction of the air blown out by the air direction vane 5 changes. Thereby, a correspondence table (later-described Table 1) which shows relationship between the detection areas A and the air direction vanes 5 is changed. The correspondence table is used in determining the installation position of the infrared sensor by the installation position detection function of the infrared sensor 6 . Further, the division number of the detection areas A is not limited to four.
  • the detection area A is divided into a plurality of areas so that the temperature distribution on a floor surface or the like around the air-conditioning apparatus 50 is figured out.
  • the correspondence table (later-described Table 1) showing the relationship between the detection areas A and the air direction vanes 5 is appropriately set in accordance with the division of the area.
  • Embodiment 1 with the detection areas A of the infrared sensor 6 obtained by quartering at 90 degrees, the four installation directions of the infrared sensor 6 different from one another every 90 degrees, and the arrangement of the air direction vanes 5 with blowout directions set at intervals of 90 degrees, it is possible to make correspondence between the installation position detection function and the detection areas A and the air direction vanes 5 , without increasing the resolution of detection of the infrared sensor 6 or complicating a control.
  • FIG. 6 is a flowchart of a control in Embodiment 1. An operation will be described with reference to FIG. 5 and FIG. 6 .
  • the corner C 1 is the standard installation position of the infrared sensor 6 .
  • the air direction vane 5 b should actually be driven and placed in a downward blowing state.
  • the installation position of the infrared sensor 6 has not been reset, and the infrared sensor 6 is recognized as installed to the corner C 1 .
  • the air direction vane 5 a is driven when the remote controller 16 recognizes that the temperature of the detection area A 1 is high.
  • the remote controller 16 of the air-conditioning apparatus 50 performs control processes as described below to eliminate such mismatch between the detection area A and the air direction vane 5 to be driven.
  • the installation position detection function is executed and started from the remote controller 16 .
  • suction temperature detected by the suction temperature sensor 15 equals or exceeds the specified value (equals or exceeds 24 degrees Celsius, for example) (in the case of Y at step S 12 ), a cooling operation is started.
  • the suction temperature detected by the suction temperature sensor 15 is lower than the specified value (lower than 24 degrees Celsius, for example) (in the case of N at step S 12 ), a heating operation is started.
  • the temperature of the floor surface is measured with the infrared sensor 6 for each of the detection areas A 1 to A 4 , and is recorded and saved as a temperature t 0 .
  • the temperature t 0 is a matrix of data measured for the floor surface divided into a plurality of parts.
  • Only one of the air direction vanes 5 (the air direction vane 5 a , for example) is set to downward blowing to direct a blown-out airflow toward the floor surface.
  • the temperature of the floor surface is measured again with the infrared sensor 6 , and is recorded and saved as a temperature t 1 .
  • the temperature t 1 is a matrix of data measured for the floor surface divided into a plurality of parts.
  • the temperature t 0 measured at step S 15 and the temperature t 1 measured at step S 17 are compared for each of the detection areas A 1 to A 4 .
  • the detection area with the largest absolute value of the temperature change (absolute value of the difference between t 0 and t 1 ) is identified, regardless of the cooling operation or the heating operation.
  • the determination may be made by a method of identifying the detection area A with the lowest temperature of the floor surface when the cooling operation is being performed, or identifying the detection area A with the highest temperature of the floor surface when the heating operation is being performed.
  • the detection area A of the infrared sensor 6 and the air direction vane 5 to be controlled are made to correspond to each other as determined at step S 19 .
  • settings are made such that the infrared sensor 6 is installed to the corner C 1 .
  • the air direction vane 5 a operates for the detection area A 1
  • the air direction vane 5 b operates for the detection area A 2
  • the air direction vane 5 c operates for the detection area A 3
  • the air direction vane 5 d operates for the detection area A 4 .
  • settings are made such that the air direction vane 5 b operates for the detection area A 1 , the air direction vane 5 c operates for the detection area A 2 , the air direction vane 5 d operates for the detection area A 3 , and the air direction vane 5 a operates for the detection area A 4 .
  • These settings are written in the remote controller 16 (equivalent to the controller of the invention of the present application).
  • the infrared sensor 6 is provided with a human body detection function to realize such control processes.
  • the installation position of the infrared sensor 6 is detected under the condition that only one of the air direction vanes 5 is set in the downward blowing state and the comparison of floor surface temperatures detected with the infrared sensor 6 is performed once.
  • a description will be given of a case in which a plurality of the air direction vanes 5 are set in the downward blowing state, and the temperature is detected multiple times with the infrared sensor 6 and floor surface temperatures are compared.
  • FIG. 7 is a flowchart of a control in Embodiment 2. An operation of the air-conditioning apparatus 50 will be described with reference to FIG. 7 .
  • Steps S 21 to S 25 are similar to steps S 11 to S 15 in Embodiment 1.
  • X vane(s) is/are set to downward blowing to direct the blown-out airflow toward the floor surface.
  • X is one of 1, 2, or 3.
  • the temperature of the floor surface is measured again with the infrared sensor 6 , and is saved as the temperature t 1 .
  • the temperature t 1 is a matrix of data measured for the floor surface divided into a plurality of parts. In the case of the second or subsequent measurement of t 1 , the data matrix of t 1 is overwritten.
  • the temperature t 0 measured at step S 25 and the temperature t 1 measured at step S 27 are compared for each of the detection areas A 1 to A 4 . In this step, if the temperature difference between t 0 and t 1 of the detection area A where the temperature difference between t 0 and t 1 is the largest does not reach a specified value (in the case of N), the procedure returns to step S 27 to measure again the temperature of the floor surface.
  • the top X detection area(s) A with the largest absolute value(s) of the temperature change is/are identified, regardless of the cooling operation or the heating operation.
  • the top X detection area(s) A with the lowest temperature(s) of the floor surface may be identified when the cooling operation is being performed, and the top X detection area(s) A with the highest temperature(s) of the floor surface may be identified when the heating operation is being performed.
  • Y air direction vane(s) 5 other than the air direction vane(s) 5 set in the downward blowing state last time (the X vane(s) set in the downward blowing state at step S 26 ) is/are set in the downward blowing state.
  • Y is smaller than 4-X.
  • the temperature of the floor surface is measured again with the infrared sensor 6 , and is saved as a temperature t 2 .
  • the temperature t 2 is a matrix of data measured for the floor surface divided into a plurality of parts. In the case of the second or subsequent measurement of t 2 , the data matrix of t 2 is overwritten.
  • the temperature t 1 measured at step S 27 and the temperature t 2 measured at step S 32 are compared for each of the detection areas A 1 to A 4 . In this step, if the temperature difference between t 1 and t 2 of the detection area A where the temperature difference between t 1 and t 2 is the largest does not reach a specified value (in the case of N), the procedure returns to step S 32 to measure again the temperature of the floor surface. If the temperature difference reaches the specified value (in the case of Y), the procedure proceeds to step S 34 .
  • the top Y detection area(s) A with the largest absolute value of the temperature change is/are identified, regardless of the cooling operation or the heating operation.
  • the top Y detection area(s) A with the lowest temperature(s) of the floor surface may be identified when the cooling operation is being performed, and the top Y detection area(s) A with the highest temperature(s) of the floor surface may be identified when the heating operation is being performed.
  • step S 30 The result of the determination D 1 obtained at step S 30 and the result of the determination D 2 obtained at step S 36 are compared. If the results match (in the case of Y), the procedure proceeds to step S 37 . If the results are different (in the case of N), the control processes from step S 26 are repeated again.
  • a plurality of the air direction vanes 5 are set to downward blowing, and the correspondence relationship thereof with the detection areas A is checked, thereby making it possible to enhance the precision of detecting the correct installation position as compared with Embodiment 1. Further, it is possible to detect the detection area A accurately by repeating the steps of the multiple temperature measurements and comparisons, that is, by repeating the temperature measurements based on alternation of the air direction vane(s) 5 to be set in the downward blowing state. Consequently, the installation position is accurately detected, making it possible to enhance the precision of detection by the infrared sensor 6 .
  • the control may be performed with steps S 31 to S 36 omitted. Further, a control may be performed in which the repetition of the temperature measurement at step S 28 and step S 33 is omitted and a step of changing the air direction vane(s) 5 to be set in the downward blowing is executed, and then a step of measuring the temperature is executed.
  • the omission of these control processes may be appropriately set in accordance with specifications of the air-conditioning apparatus 50 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Air Conditioning Control Device (AREA)
US15/528,787 2015-03-12 2015-03-12 Air-conditioning apparatus Abandoned US20170336082A1 (en)

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EP3671054A1 (en) * 2018-12-18 2020-06-24 LG Electronics Inc. Ceiling type indoor unit of air conditioner
US20220307724A1 (en) * 2019-08-08 2022-09-29 Mitsubishi Electric Corporation Air-conditioning apparatus
EP4653773A1 (en) * 2024-05-24 2025-11-26 Carrier Japan Corporation Air conditioner, wind direction control method, and program

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WO2018150535A1 (ja) * 2017-02-17 2018-08-23 三菱電機株式会社 室内機および空気調和装置
CN106885351A (zh) * 2017-04-20 2017-06-23 广东高村空调制造有限公司 一种中央空调自动化控制系统
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CN111981575B (zh) * 2020-08-27 2021-08-17 余姚市工易仪表有限公司 一种室内温度控制方法、系统、存储介质及温度调节装置

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CN105972749B (zh) 2018-12-25
JPWO2016143122A1 (ja) 2017-06-29
EP3270071A4 (en) 2018-01-17
CN105972749A (zh) 2016-09-28
JP6359176B2 (ja) 2018-07-18
CN205448175U (zh) 2016-08-10
EP3270071A1 (en) 2018-01-17
WO2016143122A1 (ja) 2016-09-15

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