EP2395291B1 - Klimaanlage - Google Patents

Klimaanlage Download PDF

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Publication number
EP2395291B1
EP2395291B1 EP11001408.1A EP11001408A EP2395291B1 EP 2395291 B1 EP2395291 B1 EP 2395291B1 EP 11001408 A EP11001408 A EP 11001408A EP 2395291 B1 EP2395291 B1 EP 2395291B1
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EP
European Patent Office
Prior art keywords
control section
indoor
air conditioner
basis
image
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.)
Not-in-force
Application number
EP11001408.1A
Other languages
English (en)
French (fr)
Other versions
EP2395291A3 (de
EP2395291A8 (de
EP2395291A2 (de
Inventor
Hirokuni Shiba
Kazuya Kubo
Masayuki Yamamoto
Yasunori Mori
Kazunori Nishida
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
Publication of EP2395291A2 publication Critical patent/EP2395291A2/de
Publication of EP2395291A8 publication Critical patent/EP2395291A8/de
Publication of EP2395291A3 publication Critical patent/EP2395291A3/de
Application granted granted Critical
Publication of EP2395291B1 publication Critical patent/EP2395291B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to 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
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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

Definitions

  • the present invention relates to an air conditioner that controls an outdoor unit in accordance with the number of people in a room detected by an infrared sensor, for example.
  • a detection operation for presence of a human body is performed by a radiation sensor disposed in an indoor unit, and when no human body is present, air-conditioning capacity is saved to an efficient region and controlled so that an indoor temperature gradually reaches a set temperature (Patent document No. 1, for example).
  • a detection operation for the presence of a human body is performed by an infrared-ray detecting portion which determines for each part of a room if a human body is present or not depending on a temperature difference of said part of the room compared to the general room temperature (Patent document No. 2).
  • an operating frequency of a compressor is set in a high operating efficiency state such as 60 Hz, for example, and operation control according to the number of people is not executed.
  • the present invention was made in order to solve the above problem and has an object to provide an air conditioner that controls an operation of a compressor in accordance with presence of people or the number of people in a room in which an indoor unit is installed.
  • An air conditioner is provided with an outdoor unit having a compressor, an indoor unit connected to the outdoor unit via an extended pipeline, a human detection sensor, a remote controller, an indoor control section that starts the human detection sensor when an instruction to detect a human body is received from the remote controller, generates an image of the inside of the room on the basis of detection information of the human detection sensor, determines whether a human body is present or not from the image, determines the number of the people if a human body is present, and calculates an operating frequency on the basis of information of the determination result, and an outdoor control section that controls the compressor on the basis of the operating frequency calculated by the indoor control section.
  • the human detection sensor is started when an instruction to detect a human body is received from the remote controller, an image of the inside of the room is generated on the basis of the detection information of the human detection sensor, it is determined if a human body is present or not from the image, the number of people is determined as well when a human body is present, and the operating frequency of the compressor is calculated on the basis of the information of the determination result.
  • Fig. 1 is a schematic diagram illustrating an entire configuration of an air conditioner according to an embodiment of the present invention
  • Fig. 2 is a perspective view illustrating an appearance of an indoor unit of the air conditioner according to the embodiment of the present invention
  • Fig. 3 is a sectional view illustrating a side face of the indoor unit in Fig. 2 in a cut-away manner
  • Fig. 4 is a perspective view illustrating an installation example of the indoor unit in Fig. 2 .
  • the air conditioner in Embodiment 1 is, as shown in Fig. 1 , composed of an indoor unit X, an outdoor unit Y, a remote controller Z, a liquid extended pipeline A and a gas extended pipeline B that connect the indoor unit X and the outdoor unit Y, a communication line C wired between the remote controller Z and an indoor control section X1 of the indoor unit X and between the indoor control section X1 and an outdoor control section Y1 of the outdoor unit Y, respectively, and an infrared sensor 5 (See Fig. 2 ), for example, which is a human detection sensor.
  • the above-described indoor unit X is installed mainly in a building or is embedded in a ceiling, for example (See Fig. 4 ).
  • the remote controller Z and the indoor control section X1 are connected to each other by the communication line C, but information transmission/reception may be conducted via radio communication therebetween.
  • the infrared sensor 5 is disposed on a decorative panel 2 of the indoor unit X, to be described later.
  • the indoor control section X1 transmits the operation instruction to the outdoor control section Y1 of the outdoor unit Y and also drives a fan motor 6, which will be described later, on the basis of the operation instruction. Also, when an instruction to detect a human body from the remote controller Z such as an instruction to start an initial operation after an installation of this air conditioner or an instruction to obtain a background image inside the room, for example, is received, the indoor control section X1 starts the infrared sensor 5, generates a heat image inside the room on the basis of detection information of the infrared sensor 5 and stores the heat image as a background image.
  • an operation instruction cooling operation, heating operation, dehumidification operation and the like
  • the indoor control section X1 starts the infrared sensor 5 and generates a heat image inside the room on the basis of the detection information of the infrared sensor 5. Then, the indoor control section X1 determines whether a human body is present or not by comparing the heat image with the background image inside the room stored in advance and determines the number of people if a human body is present and calculates an operating frequency of the compressor of the outdoor unit Y on the basis of the information of the determination result. The determination of the number of human bodies and the calculation of the operating frequency will be described in detail when an operation is described.
  • the outdoor control section Y1 controls the compressor with the operating frequency according to the operation instruction and when the operating frequency calculated by the indoor control section X1 is received, the outdoor control section Y1 controls the compressor on the basis of the operating frequency. That is, the more the operating frequency is increased, the higher the rotation speed of the compressor is raised, while the more the operating frequency is decreased, the lower the rotation speed of the compressor is lowered.
  • a heat exchanger, an expansion valve and the like are disposed in addition to the above-described compressor.
  • An appearance of the indoor unit X is, as shown in Fig. 2 , composed of a box-shaped cabinet 1, the decorative panel 2 in a square shape disposed below the cabinet 1, a square-shaped inlet 3b disposed at the center of the decorative panel 2, four rectangular blow-out ports 3a disposed in the decorative panel 2 so as to surround the inlet 3b, and wind-direction flaps 4 that are disposed on the blow-out ports 3a and change the wind direction in the vertical direction.
  • the infrared sensor 5 is mounted on a lower face at a corner of the decorative panel 2.
  • a fan motor 6 having a load shaft directed downward arranged at the center of the top face of the cabinet 1, a turbo fan 7 mounted on the load shaft of the fan motor 6, a heat exchanger 8 arranged so as to surround the turbo fan 7, an inner cover 9 arranged so as to surround the heat exchanger 8, a drain pan 10 installed below the heat exchanger 8 and receiving condensed water generated during heat exchange, and a temperature sensor 13 that detects a temperature of air sucked through the inlet 3b are disposed.
  • the above-described inner cover 9 is provided to insulate the air heat-exchanged by the heat exchanger 8 from outside the unit, and the heat exchanger 8 and the drain pan 10 constitute an air path on an outer periphery of the heat exchanger 8.
  • the air path communicates with the blow-out port 3a.
  • an air filter 11 that prevents intrusion of dusts and the like into the unit and a grill 12 that supports the air filter 11 and also functions as a blind are disposed. Moreover, between the air filter 11 and the turbo fan 7, a bell mouth 14 that introduces sucked air into the turbo fan 7 smoothly is disposed.
  • the above-described infrared sensor 5 is composed of a multi-eye infrared sensor or a plurality of infrared sensors and installed within a sensor case 5b.
  • the sensor case 5b is contained in a housing 5a having an outer shape of a substantially cone formed at one corner of a decorative panel 2 and mounted on the vertical direction axis of a motor 5c, capable of rotating in 360 degrees.
  • the infrared sensor 5 is composed of a plurality of detection sections, and the detection sections are exposed from a hole 5d disposed in a projection portion of the housing 5a and arranged in parallel with a normal line of a circle of the hole 5d.
  • Figs. 5 are flowcharts illustrating an operation of the air conditioner according to the embodiment of the present invention.
  • Fig. 5A is a flowchart when obtaining a background image inside the room in which the indoor unit X is installed
  • Fig. 5B is a flowchart illustrating detection of the number of people present in the same room and calculation of the operating frequency of the compressor according to the number of people.
  • the indoor control section X1 rotates the infrared sensor 5 by 360 degrees at a rate of approximately once in several minutes to several seconds by a motor driving force (S2).
  • the indoor control section X1 generates a two-dimensional heat image on the basis of detection information (indoor information) of the infrared sensor 5 obtained by a trajectory axis by the rotation and the axis in the alignment direction of the infrared sensor 5 (S3) and stores it as a background image (S4).
  • the background image may be obtained either during the operation of the air conditioner or during the stop thereof.
  • the indoor control section X1 rotates the infrared sensor 5 once as described above (S12) and generates the two-dimensional heat image on the basis of the detection information of the infrared sensor 5 obtained at this time (S13). Then, the indoor control section X1 obtains a difference between the two-dimensional heat image and the background image stored in advance (S14) and performs grouping of pixels from the difference so as to sort out an image assumed to be an object (S15).
  • the indoor control section X1 determines whether an average temperature T of the sorted-out image portion is a threshold value Ta or more and a threshold value Tb or less (S16). If the average temperature T is not within the range, the indoor control section X1 determines that a human body is not present in the room, and proceeds to determine whether there is a subsequent grouping or not (S19). Also, if the average temperature T is the threshold value Ta or more and the threshold value Tb or less, the indoor control section X1 determines whether the number of pixels in that portion is a threshold value Sa or more (S17).
  • the indoor control section X1 determines that there is no human body in the room and proceeds to determine whether there is another grouping or not similarly to the above (S19). If it is determined that the number of pixels is the threshold value Sa or more, the indoor control section X1 determines that there is a human body in the room (S18) and determines whether there is a subsequent grouping or not (S19).
  • the indoor control section X1 repeats the above-described operation if there is a subsequent grouping (S16 to S19) and performs this operation until there is no more subsequent grouping.
  • the indoor control section X1 confirms the number of people from the confirmed human bodies when the operation is repeatedly performed (S20). Then, the indoor control section X1 calculates an operating frequency Hzm of the compressor required from the outdoor unit Y by a formula determined in advance according to the number of people (S21), transmits the operating frequency Hzm to the outdoor control section Y1 via the communication line C (S22), and operates the compressor of the outdoor unit Y by the operating frequency Hzm (S23).
  • the infrared sensor 5 when start of the energy saving operation is detected, the infrared sensor 5 is started, a heat image is generated on the basis of the detection information of the infrared sensor 5, and the heat image is compared with the background image stored in advance so as to determine whether a human body is present or not. Then, if the human body is present, the number of people is determined, the operating frequency is calculated on the basis of the information of the determination result, and the compressor is controlled by the operating frequency.
  • the operating frequency of the compressor is determined in accordance with the number of people present in the room as shown in Fig. 6 , but not limited to that.
  • the number of people is divided into three stages, that is, 0 people, 1 to 10 people, and 10 people or more, the maximum value of the operating frequency of the compressor in each case is determined in advance, which one of the three stages is specified from the number of people on the basis of the detection by the infrared sensor 5 and the maximum frequency value is determined, and the compressor of the outdoor unit Y is operated by the maximum frequency value.
  • a set temperature of the remote controller Z is changed in accordance with the number of people. For example, suppose that a user has set the set temperature at 27°C during cooling. Subsequently, the number of people in the target indoor space is detected using the infrared sensor 5, the temperature is raised by 2°C in the case of 0 people, the temperature is raised by 1°C in the case of 1 to 10 people, and the temperature is left as it is in the case of 10 people or more, and the result is transmitted to the outdoor control section Y1 of the outdoor unit Y via the communication line C. This mode is made effective only if the user has selected an energy saving operation by the remote controller Z.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Claims (6)

  1. Klimaanlage, enthaltend:
    eine Außenbereichseinheit (Y) mit einem Kompressor;
    eine Innenbereichseinheit (X), die mit der Außenbereichseinheit (Y) über eine verlängerte Rohrleitung verbunden ist;
    ein Sensor zur Erkennung von Menschen;
    eine Fernbedienung (Z);
    charakterisiert durch
    einen Innenbereichssteuerabschnitt (X1), der besagten Sensor zur Erkennung von Menschen startet, wenn eine Anweisung zum Erkennen eines menschlichen Körpers von besagter Fernbedienung (Z) empfangen wird, ein Innenbereichsbild auf der Grundlage von Erfassungsinformationen des Sensors zur Erkennung von Menschen erzeugt, aus dem Bild bestimmt, ob ein menschlicher Körper vorhanden ist oder nicht, und auch die Anzahl der Personen bestimmt, wenn der menschliche Körper anwesend ist, und eine Betriebsfrequenz auf der Basis von Informationen der Bestimmungsergebnisse berechnet; und
    einen Außenbereichssteuerabschnitt (Y1), der besagten Kompressor auf der Basis der durch den Innenbereichssteuerabschnitt (X1) berechneten Betriebsfrequenz steuert.
  2. Klimaanlage nach Anspruch 1, wobei der Innenbereichssteuerabschnitt (X1) den Sensor zur Erkennung von Menschen startet, wenn eine Anweisung zum Erfassen eines menschlichen Körpers von besagter Fernbedienung (Z) empfangen wird, ein Innenbereichsbild auf der Grundlage von Erfassungsinformationen des Sensors zur Erkennung von Menschen bestimmt, durch Vergleichen des Bildes mit einem Hintergrundbild des Inneren eines im Voraus gespeicherten Raums bestimmt, ob ein menschlicher Körper vorhanden ist oder nicht, und auch die Anzahl von Personen bestimmt, wenn der menschliche Körper vorhanden ist, und eine Betriebsfrequenz von besagtem Kompressor auf der Grundlage von Informationen der Bestimmungsergebnisse berechnet.
  3. Klimaanlage nach Anspruch 2, wobei der Innenbereichssteuerabschnitt (X1) den Sensor zur Erkennung von Menschen startet, wenn eine Anweisung von besagter Fernbedienung (Z) eine Anweisung zum Erlangen des Hintergrundbildes des Inneren des Raums ist, ein Bild des Innenraums auf der Grundlage der Erfassungsinformation des Sensor zur Erkennung von Menschen erzeugt und das Bild als ein Hintergrundbild speichert.
  4. Klimaanlage nach einem der Ansprüche 1 bis 3, wobei besagter Innenbereichssteuerabschnitt (X1) die durch die Fernbedienung (Z) eingestellte Innentemperatur entsprechend der bestimmten Anzahl von Personen ändert.
  5. Klimaanlage nach einem der Ansprüche 1 bis 4, wobei besagter Innenbereichssteuerabschnitt (X1) die maximale Betriebsfrequenz des Kompressors gemäß der bestimmten Anzahl von Personen ändert.
  6. Klimaanlage nach einem der Ansprüche 1 bis 5, wobei der Sensor zur Erkennung von Menschen ein Multi-Augen-Infrarotsensor oder eine Vielzahl von Infrarotsensoren ist.
EP11001408.1A 2010-06-11 2011-02-21 Klimaanlage Not-in-force EP2395291B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010134139A JP5300793B2 (ja) 2010-06-11 2010-06-11 空気調和機

Publications (4)

Publication Number Publication Date
EP2395291A2 EP2395291A2 (de) 2011-12-14
EP2395291A8 EP2395291A8 (de) 2012-02-29
EP2395291A3 EP2395291A3 (de) 2016-07-06
EP2395291B1 true EP2395291B1 (de) 2018-01-31

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EP11001408.1A Not-in-force EP2395291B1 (de) 2010-06-11 2011-02-21 Klimaanlage

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EP (1) EP2395291B1 (de)
JP (1) JP5300793B2 (de)
CN (1) CN102278805B (de)

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CN108087972B (zh) * 2017-12-12 2020-12-11 广东美的制冷设备有限公司 空调挂机及其控制方法
CN108105863A (zh) * 2017-12-12 2018-06-01 广东美的制冷设备有限公司 空调挂机及其控制方法
CN108716743B (zh) * 2018-06-14 2020-08-21 广州徽一电子科技有限公司 一种楼宇空调设备及其管理方法
CN109959096B (zh) * 2018-08-01 2020-12-11 安徽省华腾农业科技有限公司经开区分公司 智能化冷暖式温控设备
JP7008866B2 (ja) * 2019-02-18 2022-02-10 三菱電機株式会社 空気調和装置
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Also Published As

Publication number Publication date
CN102278805A (zh) 2011-12-14
JP5300793B2 (ja) 2013-09-25
CN102278805B (zh) 2014-10-22
EP2395291A3 (de) 2016-07-06
EP2395291A8 (de) 2012-02-29
JP2011257112A (ja) 2011-12-22
EP2395291A2 (de) 2011-12-14

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