WO2021186498A1 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
WO2021186498A1
WO2021186498A1 PCT/JP2020/011442 JP2020011442W WO2021186498A1 WO 2021186498 A1 WO2021186498 A1 WO 2021186498A1 JP 2020011442 W JP2020011442 W JP 2020011442W WO 2021186498 A1 WO2021186498 A1 WO 2021186498A1
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WO
WIPO (PCT)
Prior art keywords
auto
control unit
air conditioner
temperature
room temperature
Prior art date
Application number
PCT/JP2020/011442
Other languages
French (fr)
Japanese (ja)
Inventor
弘祐 大西
誠 小栗
Original Assignee
日立ジョンソンコントロールズ空調株式会社
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 日立ジョンソンコントロールズ空調株式会社 filed Critical 日立ジョンソンコントロールズ空調株式会社
Priority to PCT/JP2020/011442 priority Critical patent/WO2021186498A1/en
Priority to JP2020537784A priority patent/JP7002662B1/en
Priority to CN202080066758.9A priority patent/CN114502893A/en
Publication of WO2021186498A1 publication Critical patent/WO2021186498A1/en

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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F2120/10—Occupancy

Definitions

  • the present invention relates to an air conditioner.
  • the air conditioner has a function (auto-off function) to switch the air conditioner to save operation or stop the operation of the air conditioner when there is no user in the room.
  • the set temperature of the remote controller is subtracted by a predetermined value (during heating operation) or added by a predetermined value (during cooling operation), and the room temperature is controlled by this changed value.
  • Patent Document 1 describes an air conditioner that detects a human body with a focused infrared sensor, even when the temperature difference between the room temperature and the user is small and it is difficult to detect the detected object.
  • a method has been proposed in which the detection probability of the body can be increased, the probability of switching to a control different from the setting of the air conditioner is reduced, and the user or the like is not discomforted by erroneous control.
  • the human body is not detected for a predetermined time and the room temperature is between 34 ° C. and 38 ° C., which is close to the temperature of the human body, the time until switching to an operation different from the set value is set to a predetermined value, and when the room temperature is out of the range, the predetermined value is set. This is a method of setting a value smaller than.
  • Patent Document 1 it is proposed to set the time until switching to the save operation or the time until the operation is stopped to a predetermined value, but even at the predetermined value, in addition to the room temperature, the floor plan, the arrangement of furniture, etc. There is a possibility that the human body cannot be detected. Therefore, even if a human body exists in the air-conditioned space, there is a problem that the operation is automatically stopped (auto-off) due to unintended control by the user.
  • the present invention is an invention for solving the above-mentioned problems, and an object of the present invention is to provide an air conditioner capable of maintaining indoor comfort when an auto-off function is set.
  • the air conditioner of the present invention uses a room temperature detecting means (for example, a room temperature sensor 51) for detecting a room temperature, a human detection sensor for detecting a human body in a room, and a human detection sensor for a predetermined time.
  • a room temperature detecting means for example, a room temperature sensor 51
  • a human detection sensor for detecting a human body in a room
  • a human detection sensor for a predetermined time.
  • a control unit having an auto-off function for stopping the operation when the operation cannot be detected is provided, and the control unit is out of the predetermined auto-off permission range when the room temperature is out of the predetermined auto-off permission range while the auto-off function is enabled.
  • the auto-off function is disabled.
  • indoor comfort can be maintained when the auto-off function is set.
  • FIG. 1 is an explanatory diagram showing an external configuration of an air conditioner according to the present embodiment.
  • the air conditioner A is a device that performs indoor air conditioning such as cooling by using, for example, heat pump technology.
  • the air conditioner A is roughly divided into an indoor unit 100 installed on an indoor wall, ceiling, floor, etc., an outdoor unit 200 installed outdoors, and communicates with the indoor unit 100 by infrared rays, radio waves, communication lines, or the like.
  • a remote controller 40 remote controller, air conditioning control terminal
  • various sensor units for obtaining information used for controlling and displaying the air conditioner such as room temperature and outside temperature. It consists of 50 (see FIG. 5).
  • the indoor unit 100 and the outdoor unit 200 are connected to a refrigerant pipe by a communication cable (not shown).
  • the indoor unit 100 has an infrared sensor 110 as one sensor of the sensor unit 50.
  • FIG. 2 is an explanatory diagram showing a configuration of an indoor unit of the air conditioner according to the present embodiment.
  • the indoor unit 100 includes a heat exchanger 102, a blower fan 103, a left and right wind direction plate 104 (wind direction portion), a vertical wind direction plate 105 (wind direction portion), a front panel 106, a housing base 101, and various sensor portions 50 (see FIG. 5). ) Etc.
  • the heat exchanger 102 has a plurality of heat transfer tubes 102a, and heats the indoor air taken into the indoor unit 100 by the blower fan 103 with the refrigerant flowing through the heat transfer tubes 102a to cool the air. Or it is configured to heat.
  • the heat transfer tube 102a is connected to the above-mentioned refrigerant pipe and constitutes a part of a known refrigerant cycle.
  • the blower fan 103 can adjust the wind speed.
  • the left and right wind direction plates 104 are rotated in the forward and reverse directions by the left and right wind direction plate motors with the rotation shaft provided at the lower part of the indoor unit as a fulcrum on the base end side thereof.
  • the tip side of the left and right wind direction plate 104 faces the indoor side, so that the tip side of the left and right wind direction plate 104 can operate so as to swing in the horizontal direction.
  • the vertical wind direction plate 105 is rotated in the forward and reverse directions by the motor for the vertical wind direction plate with the rotation shafts provided at both ends of the indoor unit 100 in the longitudinal direction as fulcrums.
  • the tip side of the vertical wind direction plate 105 can be operated so as to swing in the vertical direction.
  • the front panel 106 is installed so as to cover the front surface of the indoor unit, and can be rotated forward and reverse by the front panel motor with the rotation axis at the lower end as a fulcrum.
  • the front panel 106 may be fixed to the lower end of the indoor unit without rotating.
  • the indoor unit 100 takes in indoor air into the indoor unit 100 through the air suction port 107 and the filter 108 by rotating the blower fan 103, and heat exchanges this air with the heat exchanger 102.
  • the air after the heat exchange is cooled or heated by the heat exchanger 102.
  • the air after this heat exchange is guided to the blowout air passage 109a.
  • the air guided to the air outlet 109a is sent out from the air outlet 109b to the outside of the indoor unit to harmonize the air in the room.
  • the horizontal wind direction is adjusted by the left and right wind direction plates 104, and the vertical wind direction is adjusted by the vertical wind direction plate 105.
  • FIG. 3 is an explanatory diagram showing a configuration of an outdoor unit of the air conditioner according to the present embodiment.
  • the outdoor unit 200 of the air conditioner A includes a compressor 202 that compresses the refrigerant, an expansion valve that reduces the pressure of the high-pressure refrigerant, a four-way valve that switches the flow path of the refrigerant, and a heat exchanger 206 that exchanges heat between the outside air and the refrigerant. It is equipped with equipment such as an outdoor heat exchanger).
  • the outdoor unit 200 separates (divides) the heat exchanger room 204 and the machine room 205 by a partition plate 211, an electrical component box 210, and a lead wire support component 209.
  • a propeller fan 207 that promotes heat exchange of the refrigerant circulating in the refrigerant pipe with the outside air, a motor for driving the propeller fan 207, a fan column that rotatably supports the propeller fan 207, and circulation with the outside air.
  • a heat exchanger 206 for exchanging heat of the refrigerant is provided.
  • a compressor 202 that uses a high-temperature and high-pressure gas refrigerant as a circulating refrigerant, an electric expansion valve that uses a low-temperature and low-pressure liquid refrigerant as a low-temperature and high-pressure liquid refrigerant, an electric component reactor, and a refrigerant flow in the machine room 205.
  • a heat transfer tube for the refrigerant pipe is arranged.
  • the electrical component box 210 contains electrical components that control the outdoor unit 200, and an electrical component lid is placed on top of the electrical components.
  • FIG. 4 is an explanatory diagram showing the appearance of the remote controller of the air conditioner according to the present embodiment.
  • the remote controller 40 is operated by the user and transmits an infrared signal to the remote controller receiver Q (see FIG. 1) of the indoor unit.
  • the contents of the signal are various commands such as an operation request, a change of a set temperature, a timer, a change of an operation mode, and a stop request.
  • the air conditioner A can at least perform indoor cooling, heating, dehumidification, and the like. It may also have other air conditioning functions such as air purification.
  • the air conditioner A can adjust the air in the room in various ways.
  • the auto-save function switches to the absent energy saving mode when the absence of the human body is recognized during operation, and the auto-off function automatically stops the operation after a predetermined time elapses. .. Details will be described later in FIGS. 7 and 8.
  • FIG. 5 is an explanatory diagram showing a configuration of a sensor unit of the air conditioner according to the present embodiment.
  • the sensor unit 50 is provided in the indoor unit 100 and the outdoor unit 200.
  • the sensor unit 50 includes a room temperature sensor 51 (temperature detection unit), a humidity sensor 52, an infrared sensor 110 (see FIG. 1) as a human detection sensor, an outside temperature sensor, a compressor temperature sensor, a refrigerant pipe temperature sensor, a clock, and the like.
  • NS room temperature sensor 51
  • temperature detection unit temperature detection unit
  • a humidity sensor 52 for a temperature sensor
  • an infrared sensor 110 see FIG. 1
  • NS refrigerant pipe temperature sensor
  • thermopile As the human detection sensor, in addition to the infrared sensor 110, a near infrared sensor, a thermopile, a thermography, a charcoal type sensor, an ultrasonic sensor, and a noise sensor may be used.
  • a thermopile for example, it is composed of 1 ⁇ 1 pixel, 4 ⁇ 4 pixel, 1 ⁇ 8 pixel in width ⁇ length, and is installed in the lower part of the center in the left-right direction of the front panel 106 (see FIG. 1). good.
  • the image pickup unit may be used as the human detection sensor.
  • the human body detection unit 61 (see FIG. 6) detects the position of the human head or the like from the image captured by the imaging unit, and sets the position of the head as the human position. Further, in the present embodiment, in addition to the position of the person, the position of the foot of the person is also detected. The position of the person's feet may be directly detected based on the image captured by the imaging unit, or the position of the person's head or the like may be detected and the person's head or the like may be detected. The position of a person's feet may be estimated from the position of.
  • FIG. 6 is an explanatory diagram showing a configuration of a control unit of the air conditioner according to the present embodiment.
  • the control unit 60 is provided in the electrical component.
  • the control unit 60 drives the blower fan 103, the left and right wind direction plates 104, and the vertical wind direction plate 105 of the indoor unit 100 based on the information from the remote controller 40 via the transmission / reception unit 45 and the information from the sensor unit 50, and the outdoor unit 200.
  • the control unit 60 includes a human body detection unit 61 that detects a human body based on the information of the infrared sensor 110, an auto-off function unit 62 that automatically stops operation by an auto-off function when recognizing the absence of a person (human body), and a human body. Absence energy saving operation function unit 63 (auto save function unit) that automatically sets energy saving by auto save function when recognizing absence, air flow control unit 64 that controls the wind direction unit that changes the wind direction of harmonized air, storage unit 65, etc. I have.
  • FIG. 7 is an explanatory diagram showing an outline of the auto-off function according to the present embodiment.
  • the auto-off function automatically stops the operation when it recognizes the absence of a person during the operation. Wasteful power consumption due to forgetting to turn off the air conditioner A can be suppressed.
  • the auto-off function including the auto-save function will be described. Refer to FIG. 6 as appropriate.
  • the control unit 60 sets “auto-off” and recognizes the absence during operation, and after a time T1 (first predetermined time), (1) “auto-save (absence energy saving)” is set. After that, (2) when time T2 (second predetermined time) elapses after recognizing the absence, "auto-off” (pause) is performed.
  • T1 first predetermined time
  • second predetermined time second predetermined time
  • the infrared sensor 110 operates, and when a person is detected, the operation is automatically started. After resuming the operation, if the absence is recognized, the process returns to (1).
  • FIG. 8 is a flowchart showing the processing of the auto-off function according to the present embodiment. Refer to FIG. 6 as appropriate.
  • the control unit 60 detects the absence (step S81) while the "auto-off" setting is enabled (step S80), proceeds to step S82 if it is absent (step S81, Yes), and if it is not absent (step S81). , No), return to step S81.
  • the control unit 60 determines whether or not the time T1 has elapsed since the absence was detected (step S82), and if the time T1 has elapsed (steps S82, Yes), the process proceeds to step S83 and the time T1 has elapsed. If not (steps S82, No), the process returns to step S81.
  • step S83 the control unit 60 starts "auto-save", determines whether or not the human body has been detected (step S84), and if it does not detect the human body (steps S84, No), proceeds to step S85. If the human body is detected (step S84, Yes), the process proceeds to step S8A.
  • the control unit 60 determines whether or not the time T2 has elapsed since the absence was detected (step S85), and if the time T2 has elapsed (steps S85, Yes), the process proceeds to step S86 and the time T2 has elapsed. If not (steps S85, No), the process returns to step S84.
  • step S86 the control unit 60 starts "auto-off", determines whether or not the human body has been detected (step S87), and if it does not detect the human body (steps S87, No), proceeds to step S88. If the human body is detected (step S87, Yes), the process proceeds to step S8B. In step S8B, the control unit 60 starts operation and returns to step S81.
  • the control unit 60 determines whether or not the time T3 has elapsed since the start of the "auto-off" (step S88), and if the time T3 has elapsed (step S88, Yes), stops the "auto-off”. (Step S89). On the other hand, if the time T3 has not elapsed (steps S88, No), the control unit 60 returns to step S87.
  • FIG. 9 is an explanatory diagram showing the validity / invalidity of the auto-off function according to the present embodiment.
  • FIG. 9 is a diagram showing the validity / invalidity of the auto-off function, in which the upper limit temperature RT1 and the lower limit temperature RT2 are set as the auto-off permission area. That is, Lower limit temperature RT2 ⁇ room temperature ⁇ upper limit temperature RT1 (1) In the case of, the auto-off function is enabled, Room temperature ⁇ lower limit temperature RT2 or upper limit temperature RT1 ⁇ room temperature (2) In the case of, the auto-off function is disabled as the auto-off prohibited area.
  • the pyroelectric infrared sensor makes it difficult to detect a person when the temperature difference between the room temperature and the human body is small. Therefore, there was a possibility of making a judgment that there was a person but not.
  • the auto-off is not performed. Further, the farther the distance from the indoor unit 100 is, the more difficult it becomes to detect a person. Even at this time, even if it is determined that a person is present but not present, the auto-off can be prevented when the room temperature is higher than, for example, 30 ° C.
  • the auto-off function is disabled in the auto-off prohibited area, so the operation does not stop and the comfort of the room is maintained. can do.
  • FIG. 10 is a flowchart showing the process of enabling / disabling the auto-off function according to the present embodiment.
  • the control unit 60 determines whether or not the room temperature is within the auto-off permitted region during operation (step S1), and if the room temperature is within the auto-off permitted region (steps S1, Yes), sets “auto-off”. When it is enabled (step S2) and the room temperature is outside the auto-off permitted area (steps S1 and No), the "auto-off" setting is invalidated (step S3), and the process is repeated.
  • the process of FIG. 10 and the process of FIG. 8 are parallel processes.
  • FIG. 11 is an explanatory diagram showing a change in the set temperature of the auto save function according to the present embodiment.
  • the control unit 60 starts "auto save” after the first predetermined time (for example, time T1) after detecting the absence (absence energy saving start). At that time, for example, the control unit 60 raises the temperature by 2 to 3 ° C. from the set temperature of the remote controller 40 during cooling. Specifically, when the set temperature RT0 of the remote controller 40 is set to 28 ° C., it becomes 31 ° C. when the set temperature rises by 3 ° C. in the absence energy saving operation. The setting of 31 ° C. contradicts that the upper limit temperature RT1 is 30 ° C. as the auto-off permitted region, and the control is not intended by the user.
  • the first predetermined time for example, time T1
  • the control unit 60 raises the temperature by 2 to 3 ° C. from the set temperature of the remote controller 40 during cooling.
  • the set temperature RT0 of the remote controller 40 is set to 28 ° C.
  • the control unit 60 may set the upper limit temperature of the set temperature during the energy-saving operation within the auto-off permission range. Specifically, the control unit 60 sets the upper limit temperature of the set temperature during the energy-saving operation during cooling to the upper limit temperature RT1 or less, and sets the lower limit temperature of the set temperature during the energy-saving operation during heating to the lower limit temperature RT2 or more.
  • FIG. 12 is an explanatory diagram showing other enable / disable of the auto-off function according to the present embodiment.
  • the auto-off prohibited region is defined as a case where the room temperature is less than the lower limit temperature RT2 or the room temperature exceeds the upper limit temperature RT1 as shown in the equation (2), but it is not necessary to be limited to this.
  • it is determined from the room temperature and the humidity in the room, and conforms to a general WBGT (Wet Bulb Globe Temperature).
  • the control unit 60 invalidates the "auto-off" setting in the auto-off prohibited area.
  • the air conditioner of the present embodiment described above has the following features.
  • the air conditioner A cannot detect a person for a predetermined time (for example, time T2) by the room temperature detecting means (for example, room temperature sensor 51) for detecting the room temperature, the person detecting sensor for detecting a person in the room, and the person detecting sensor.
  • the control unit 60 includes a control unit 60 having an auto-off function unit 62 for stopping the operation, and the control unit 60 is in the case where the room temperature is outside the predetermined auto-off permission range while the auto-off function is enabled (see FIG. 9). Disable the auto-off function.
  • the auto-off function is set, even if the room temperature is outside the predetermined auto-off permission range, the air conditioning in the room is continued, so that the comfort of the room can be maintained.
  • the control unit 60 has an absent energy-saving operation function unit 63 that performs energy-saving operation when it recognizes the absence in the room, and the control unit 60 automatically turns off the upper limit temperature of the set temperature during the energy-saving operation when the auto-off function is enabled. Within the permitted range. As a result, the upper limit temperature of the set temperature during the energy-saving operation can be set within the auto-off permission range, and the comfort of the room can be maintained.
  • the control unit 60 can set at least one of the upper limit temperature RT1 of the auto-off permission range and the lower limit temperature RT2 of the auto-off permission range for each operation mode. Specifically, it is considered that the room temperature tends to decrease even if the operation is stopped during heating, and heat stroke does not occur. That is, heating and cooling may be set separately.
  • the control unit 60 disables the auto-off function when it is in an area where there is a risk of heat stroke based on the room temperature and humidity. Good (see Figure 12). As a result, the air conditioning in the room is continued, so that the comfort in the room can be maintained.
  • a humidity detecting means for example, a humidity sensor 52
  • the control unit 60 disables the auto-off function when it is in an area where there is a risk of heat stroke based on the room temperature and humidity. Good (see Figure 12). As a result, the air conditioning in the room is continued, so that the comfort in the room can be maintained.
  • the control unit 60 may restart the operation when the room temperature reaches the upper limit temperature or the lower limit temperature of the auto-off permitted range after the operation is stopped. As a result, the comfort of the room can be maintained.
  • control unit 60 may notify by voice or buzzer to prompt the restart of the operation. It can contribute to the prevention of heat stroke, hypothermia and freezing.
  • the control unit 60 may deliver an e-mail to the terminal of the registration destination registered in advance to the effect that it is out of the auto-off permission range. Specifically, using the Wifi cooperation, an e-mail urging the safety confirmation is delivered to the registered terminal (for example, a smartphone) such as the person or his / her family.
  • the registered terminal for example, a smartphone
  • the control unit 60 may freeze the outdoor heat exchanger while performing the room temperature recovery (heating) operation.
  • the control unit 60 causes the outdoor heat exchanger (see heat exchanger 206 in FIG. 3) to function as an evaporator, and freezes or condenses the outdoor heat exchanger. As a result, small dust adhering to the heat exchanger 206 can be washed away. It is possible to suppress a decrease in heat exchange capacity due to clogging between the fins of the heat exchanger, which has an energy saving effect.
  • the human body detection unit 61 may detect a person as a human detection sensor based on the image of the imaging unit. Further, as the human detection sensor, an infrared sensor, a near infrared sensor, a thermopile, a thermography, a charcoal type sensor, an ultrasonic sensor, or a noise sensor may be used. When a thermopile is used as the temperature detection sensor, for example, the thermopile may be composed of 1 ⁇ 1 pixel, 4 ⁇ 4 pixel, and 1 ⁇ 8 pixel in the horizontal ⁇ vertical direction, and may be installed in the lower part of the center of the front panel 106 in the left-right direction.
  • the temperature detection sensor can detect the surface temperature of the room, the surface temperature of human clothes, the temperature of human skin, and the surface temperature of each part of the floor, wall, or ceiling.
  • Remote control air conditioning control terminal
  • Transmission / reception unit 50 Sensor unit 51 Room temperature sensor (room temperature detection means) 52 Humidity sensor 60
  • Control unit 61
  • Human body detection unit 62
  • Auto-off function unit 63
  • Absent energy-saving operation function unit (auto-save function unit)
  • Airflow control unit 65
  • Storage unit 100
  • Indoor unit 103
  • Blower fan 104
  • Left and right wind direction plate (wind direction part)
  • Vertical wind direction plate Wind direction part
  • Front panel 109b
  • Air outlet 110
  • Infrared sensor human detection sensor
  • Outdoor unit 202
  • Compressor 206
  • Heat exchanger outdoor heat exchanger
  • Propeller fan A Air conditioner RT1 Upper limit temperature RT2 Lower limit temperature

Abstract

An air conditioner (A) comprises a room-temperature-sensing means (51) that senses the temperature of a room, a person-sensing sensor (110) that senses a person within the room, and a control unit (60) having an automatic turn-off function for stopping operation when no persons can be detected within a prescribed period of time by the person-sensing sensor (110). The control unit (60) disables the automatic turn-off function when the room temperature is outside of a prescribed automatic turn-off permission range (is within an automatic turn-off prohibition region) while the automatic turn-off function is enabled.

Description

空気調和機Air conditioner
　本発明は、空気調和機に関する。 The present invention relates to an air conditioner.
　空気調和機には、室内に使用者等が不在である場合、空気調和機をセーブ運転に切り替え、あるいは空気調和機の運転を停止する機能（オートオフ機能）がある。なお、セーブ運転とはリモコンの設定温度を所定値だけ減算（暖房運転時）、あるいは所定値だけ加算し（冷房運転時）、この変更した値により室温コントロールを行う。このセーブ運転や運転停止により、無駄な消費電力の低減、つまり空気調和機の省電力化を図ることができる。 The air conditioner has a function (auto-off function) to switch the air conditioner to save operation or stop the operation of the air conditioner when there is no user in the room. In the save operation, the set temperature of the remote controller is subtracted by a predetermined value (during heating operation) or added by a predetermined value (during cooling operation), and the room temperature is controlled by this changed value. By this save operation or operation stop, unnecessary power consumption can be reduced, that is, power saving of the air conditioner can be achieved.
　特許文献１には、焦型赤外線センサにより人体を検出する空気調和機で、室内の温度と使用者の温度差が小さく、被検出体の検出が難しくなっている場合であっても、被検出体の検出確率を上げることができるとともに、空気調和機の設定と異なる制御に切り替える確率を下げ、誤った制御によって使用者等に不快感を与えることのないようにする方法が提案されている。詳細として、人体が所定時間検出されず、室温が人体の温度に近い３４℃から３８℃にあるときに設定と異なる運転に切り替えるまでの時間を所定値にし、室温が範囲外にあるとき所定値よりも小さい値に設定する方法である。 Patent Document 1 describes an air conditioner that detects a human body with a focused infrared sensor, even when the temperature difference between the room temperature and the user is small and it is difficult to detect the detected object. A method has been proposed in which the detection probability of the body can be increased, the probability of switching to a control different from the setting of the air conditioner is reduced, and the user or the like is not discomforted by erroneous control. In detail, when the human body is not detected for a predetermined time and the room temperature is between 34 ° C. and 38 ° C., which is close to the temperature of the human body, the time until switching to an operation different from the set value is set to a predetermined value, and when the room temperature is out of the range, the predetermined value is set. This is a method of setting a value smaller than.
特許第４３２４８３０号公報Japanese Patent No. 4324830
　特許文献１では、セーブ運転に切り替えるまでの時間あるいは運転停止を行うまでの時間を所定値に設定することが提案されているが、該所定値においても室温の他にも間取りや家具の配置等で人体を検知できない可能性がある。そのため、空調空間に人体が存在してもユーザの意図しない制御により、自動的に運転が停止（オートオフ）してしまうのが問題であった。 In Patent Document 1, it is proposed to set the time until switching to the save operation or the time until the operation is stopped to a predetermined value, but even at the predetermined value, in addition to the room temperature, the floor plan, the arrangement of furniture, etc. There is a possibility that the human body cannot be detected. Therefore, even if a human body exists in the air-conditioned space, there is a problem that the operation is automatically stopped (auto-off) due to unintended control by the user.
　本発明は、前記の課題を解決するための発明であって、オートオフ機能が設定されている際に、室内の快適性を維持することができる空気調和機を提供することを目的とする。 The present invention is an invention for solving the above-mentioned problems, and an object of the present invention is to provide an air conditioner capable of maintaining indoor comfort when an auto-off function is set.
　前記目的を達成するため、本発明の空気調和機は、室温を検知する室温検知手段（例えば、室温センサ５１）と、室内の人体を検知する人検知センサと、人検知センサで人を所定時間（例えば、図７の時間Ｔ２）検出できない場合に運転停止を行うオートオフ機能を有する制御部と、を備え、制御部は、オートオフ機能が有効中に、室温が所定のオートオフ許可範囲外（例えば、図９のオートオフ禁止領域）の場合、オートオフ機能を無効とすることを特徴とする。本発明のその他の態様については、後記する実施形態において説明する。 In order to achieve the above object, the air conditioner of the present invention uses a room temperature detecting means (for example, a room temperature sensor 51) for detecting a room temperature, a human detection sensor for detecting a human body in a room, and a human detection sensor for a predetermined time. (For example, time T2 in FIG. 7) A control unit having an auto-off function for stopping the operation when the operation cannot be detected is provided, and the control unit is out of the predetermined auto-off permission range when the room temperature is out of the predetermined auto-off permission range while the auto-off function is enabled. (For example, in the case of the auto-off prohibited area in FIG. 9), the auto-off function is disabled. Other aspects of the present invention will be described in embodiments described below.
　本発明によれば、オートオフ機能が設定されている際に、室内の快適性を維持することができる。 According to the present invention, indoor comfort can be maintained when the auto-off function is set.
本実施形態に係る空気調和機の外観構成を示す説明図である。It is explanatory drawing which shows the appearance structure of the air conditioner which concerns on this embodiment. 本実施形態に係る空気調和機の室内機の構成を示す説明図である。It is explanatory drawing which shows the structure of the indoor unit of the air conditioner which concerns on this embodiment. 本実施形態に係る空気調和機の室外機の構成を示す説明図である。It is explanatory drawing which shows the structure of the outdoor unit of the air conditioner which concerns on this embodiment. 本実施形態に係る空気調和機のリモコンの外観を示す説明図である。It is explanatory drawing which shows the appearance of the remote control of the air conditioner which concerns on this embodiment. 本実施形態に係る空気調和機のセンサ部の構成を示す説明図である。It is explanatory drawing which shows the structure of the sensor part of the air conditioner which concerns on this embodiment. 本実施形態に係る空気調和機の制御部の構成を示す説明図である。It is explanatory drawing which shows the structure of the control part of the air conditioner which concerns on this embodiment. 本実施形態に係るオートオフ機能の概要を示す説明図である。It is explanatory drawing which shows the outline of the auto-off function which concerns on this embodiment. 本実施形態に係るオートオフ機能の処理を示すフローチャートである。It is a flowchart which shows the process of the auto-off function which concerns on this embodiment. 本実施形態に係るオートオフ機能の有効・無効を示す説明図である。It is explanatory drawing which shows the activation / invalidity of the auto-off function which concerns on this embodiment. 本実施形態に係るオートオフ機能の有効・無効の処理を示すフローチャートである。It is a flowchart which shows the process of enabling / disabling of the auto-off function which concerns on this embodiment. 本実施形態に係るオートセーブ機能の設定温度変化を示す説明図である。It is explanatory drawing which shows the set temperature change of the auto save function which concerns on this embodiment. 本実施形態に係るオートオフ機能の他の有効・無効を示す説明図である。It is explanatory drawing which shows other valid / invalidity of the auto-off function which concerns on this embodiment.
　本発明を実施するための形態（以下、実施形態という）について、適宜図面を参照しながら詳細に説明する。 The embodiment for carrying out the present invention (hereinafter referred to as the embodiment) will be described in detail with reference to the drawings as appropriate.
　図１は、本実施形態に係る空気調和機の外観構成を示す説明図である。空気調和機Ａは、例えばヒートポンプ技術などを用い、冷房など室内の空気調和を行う装置である。空気調和機Ａは、大別して、室内の壁や天井、床などに設置される室内機１００と、屋外などに設置される室外機２００と、赤外線や電波、通信線などにより室内機１００と通信してユーザが空気調和機Ａを操作するためのリモコン４０（リモートコントローラ、空調制御端末）と、室温や外気温などの空気調和機の制御や表示に用いる情報を入手するための各種のセンサ部５０（図５参照）とからなる。また、室内機１００と室外機２００とは、冷媒配管と通信ケーブル（図示せず）で接続されている。さらに、室内機１００には、センサ部５０のひとつのセンサとして、赤外線センサ１１０を有している。 FIG. 1 is an explanatory diagram showing an external configuration of an air conditioner according to the present embodiment. The air conditioner A is a device that performs indoor air conditioning such as cooling by using, for example, heat pump technology. The air conditioner A is roughly divided into an indoor unit 100 installed on an indoor wall, ceiling, floor, etc., an outdoor unit 200 installed outdoors, and communicates with the indoor unit 100 by infrared rays, radio waves, communication lines, or the like. A remote controller 40 (remote controller, air conditioning control terminal) for the user to operate the air conditioner A, and various sensor units for obtaining information used for controlling and displaying the air conditioner such as room temperature and outside temperature. It consists of 50 (see FIG. 5). Further, the indoor unit 100 and the outdoor unit 200 are connected to a refrigerant pipe by a communication cable (not shown). Further, the indoor unit 100 has an infrared sensor 110 as one sensor of the sensor unit 50.
＜室内機＞
　図２は、本実施形態に係る空気調和機の室内機の構成を示す説明図である。室内機１００は、熱交換器１０２、送風ファン１０３、左右風向板１０４（風向部）、上下風向板１０５（風向部）、前面パネル１０６、筐体ベース１０１、各種のセンサ部５０（図５参照）などを有している。 <Indoor unit>
FIG. 2 is an explanatory diagram showing a configuration of an indoor unit of the air conditioner according to the present embodiment. The indoor unit 100 includes a heat exchanger 102, a blower fan 103, a left and right wind direction plate 104 (wind direction portion), a vertical wind direction plate 105 (wind direction portion), a front panel 106, a housing base 101, and various sensor portions 50 (see FIG. 5). ) Etc.
　熱交換器１０２は、複数本の伝熱管１０２aを有し、送風ファン１０３により室内機１００内に取り込まれた室内の空気を、伝熱管１０２ａを通流する冷媒と熱交換させ、当該空気を冷却または加熱などするように構成されている。なお、伝熱管１０２ａは、前記した冷媒配管に通じていて、公知の冷媒サイクルの一部を構成している。送風ファン１０３は、風速を調節可能である。左右風向板１０４は、その基端側が室内機下部に設けた回転軸を支点にして左右風向板用モータにより正逆回転される。そして、左右風向板１０４の先端側が室内側を向いていて、これにより左右風向板１０４の先端側は水平方向に振れるように動作可能である。上下風向板１０５は、室内機１００の長手方向両端部に設けられた回転軸を支点にして上下風向板用モータにより正逆回転される。これにより、上下風向板１０５の先端側は、上下方向に振れるように動作可能である。前面パネル１０６は、室内機の前面を覆うように設置されており、下端部の回転軸を支点として前面パネル用モータにより正逆回転可能である。ちなみに、前面パネル１０６は、回転動作を行うことなく、室内機の下端に固定されたものとしてもよい。 The heat exchanger 102 has a plurality of heat transfer tubes 102a, and heats the indoor air taken into the indoor unit 100 by the blower fan 103 with the refrigerant flowing through the heat transfer tubes 102a to cool the air. Or it is configured to heat. The heat transfer tube 102a is connected to the above-mentioned refrigerant pipe and constitutes a part of a known refrigerant cycle. The blower fan 103 can adjust the wind speed. The left and right wind direction plates 104 are rotated in the forward and reverse directions by the left and right wind direction plate motors with the rotation shaft provided at the lower part of the indoor unit as a fulcrum on the base end side thereof. Then, the tip side of the left and right wind direction plate 104 faces the indoor side, so that the tip side of the left and right wind direction plate 104 can operate so as to swing in the horizontal direction. The vertical wind direction plate 105 is rotated in the forward and reverse directions by the motor for the vertical wind direction plate with the rotation shafts provided at both ends of the indoor unit 100 in the longitudinal direction as fulcrums. As a result, the tip side of the vertical wind direction plate 105 can be operated so as to swing in the vertical direction. The front panel 106 is installed so as to cover the front surface of the indoor unit, and can be rotated forward and reverse by the front panel motor with the rotation axis at the lower end as a fulcrum. Incidentally, the front panel 106 may be fixed to the lower end of the indoor unit without rotating.
　室内機１００は、送風ファン１０３が回転することによって、空気吸込み口１０７及びフィルタ１０８を介して室内の空気を室内機１００内に取り込み、この空気を熱交換器１０２で熱交換する。これにより、当該熱交換後の空気は、熱交換器１０２で冷却され、あるいは、加熱される。この熱交換後の空気は吹出し風路１０９aに導かれる。さらに、吹出し風路１０９ａに導かれた空気は、空気吹出し口１０９ｂから室内機外部に送り出されて室内を空気調和する。そして、この熱交換後の空気吹出し口１０９ｂから室内に吹き出す際には、その水平方向の風向きは左右風向板１０４により調節され、その上下方向の風向きは上下風向板１０５により調節される。 The indoor unit 100 takes in indoor air into the indoor unit 100 through the air suction port 107 and the filter 108 by rotating the blower fan 103, and heat exchanges this air with the heat exchanger 102. As a result, the air after the heat exchange is cooled or heated by the heat exchanger 102. The air after this heat exchange is guided to the blowout air passage 109a. Further, the air guided to the air outlet 109a is sent out from the air outlet 109b to the outside of the indoor unit to harmonize the air in the room. Then, when the air is blown into the room from the air outlet 109b after the heat exchange, the horizontal wind direction is adjusted by the left and right wind direction plates 104, and the vertical wind direction is adjusted by the vertical wind direction plate 105.
＜室外機＞
　図３は、本実施形態に係る空気調和機の室外機の構成を示す説明図である。空気調和機Ａの室外機２００には、冷媒を圧縮する圧縮機２０２、高圧の冷媒を減圧する膨張弁、冷媒の流路を切り替える四方弁、外気と冷媒とを熱交換する熱交換器２０６（室外熱交換器）などの装置を備えている。室外機２００は、仕切り板２１１と電装品箱２１０とリード線支持部品２０９とにより、熱交換器室２０４と機械室２０５とを区分（分割）している。熱交換器室２０４には、冷媒配管を循環する冷媒の外気との熱交換を促進するプロペラファン２０７とその駆動用のモータ、プロペラファン２０７を回転自在に支持するファン支柱、および外気と循環する冷媒の熱交換を行う熱交換器２０６が配設されている。機械室２０５には、循環する冷媒を高温高圧のガス冷媒にする圧縮機２０２、常温・高圧の液状冷媒を低温・低圧の液状冷媒にする電動膨張弁、電気部品のリアクタ、および、冷媒が流れる冷媒配管の伝熱管が配設されている。電装品箱２１０には、室外機２００を制御する電装品が収納されており、その上部には電装品蓋が被せられている。 <Outdoor unit>
FIG. 3 is an explanatory diagram showing a configuration of an outdoor unit of the air conditioner according to the present embodiment. The outdoor unit 200 of the air conditioner A includes a compressor 202 that compresses the refrigerant, an expansion valve that reduces the pressure of the high-pressure refrigerant, a four-way valve that switches the flow path of the refrigerant, and a heat exchanger 206 that exchanges heat between the outside air and the refrigerant. It is equipped with equipment such as an outdoor heat exchanger). The outdoor unit 200 separates (divides) the heat exchanger room 204 and the machine room 205 by a partition plate 211, an electrical component box 210, and a lead wire support component 209. In the heat exchanger chamber 204, a propeller fan 207 that promotes heat exchange of the refrigerant circulating in the refrigerant pipe with the outside air, a motor for driving the propeller fan 207, a fan column that rotatably supports the propeller fan 207, and circulation with the outside air. A heat exchanger 206 for exchanging heat of the refrigerant is provided. A compressor 202 that uses a high-temperature and high-pressure gas refrigerant as a circulating refrigerant, an electric expansion valve that uses a low-temperature and low-pressure liquid refrigerant as a low-temperature and high-pressure liquid refrigerant, an electric component reactor, and a refrigerant flow in the machine room 205. A heat transfer tube for the refrigerant pipe is arranged. The electrical component box 210 contains electrical components that control the outdoor unit 200, and an electrical component lid is placed on top of the electrical components.
＜リモコン＞
　図４は、本実施形態に係る空気調和機のリモコンの外観を示す説明図である。リモコン４０はユーザによって操作され、室内機のリモコン受信部Ｑ（図１参照）に対して赤外線信号を送信する。当該信号の内容は、運転要求、設定温度の変更、タイマ、運転モードの変更、停止要求などの様々な指令である。空気調和機Ａは、これらの信号に基づいて、少なくとも室内の冷房、暖房、除湿などを行うことができる。また、空気清浄など、その他の空気調和の機能を備えていてもよい。空気調和機Ａは、室内の空気を様々に調整することができる。 <Remote control>
FIG. 4 is an explanatory diagram showing the appearance of the remote controller of the air conditioner according to the present embodiment. The remote controller 40 is operated by the user and transmits an infrared signal to the remote controller receiver Q (see FIG. 1) of the indoor unit. The contents of the signal are various commands such as an operation request, a change of a set temperature, a timer, a change of an operation mode, and a stop request. Based on these signals, the air conditioner A can at least perform indoor cooling, heating, dehumidification, and the like. It may also have other air conditioning functions such as air purification. The air conditioner A can adjust the air in the room in various ways.
　リモコン４０のこれっきりボタン４１が押下されると、運転中に、人体の不在を認識するとオートセーブ機能により不在省エネモードになり、オートオフ機能により所定時間が経過すると自動的に運転を停止する。詳細については、図７、図８で後記する。 When the button 41 of the remote controller 40 is pressed, the auto-save function switches to the absent energy saving mode when the absence of the human body is recognized during operation, and the auto-off function automatically stops the operation after a predetermined time elapses. .. Details will be described later in FIGS. 7 and 8.
＜センサ部＞
　図５は、本実施形態に係る空気調和機のセンサ部の構成を示す説明図である。センサ部５０は、室内機１００と室外機２００に備えられている。センサ部５０は、室温センサ５１（温度検知部）、湿度センサ５２、人検知センサとして赤外線センサ１１０（図１参照）、外気温センサ、圧縮機温度センサ、冷媒配管温度センサ、時計などにより構成される。 <Sensor unit>
FIG. 5 is an explanatory diagram showing a configuration of a sensor unit of the air conditioner according to the present embodiment. The sensor unit 50 is provided in the indoor unit 100 and the outdoor unit 200. The sensor unit 50 includes a room temperature sensor 51 (temperature detection unit), a humidity sensor 52, an infrared sensor 110 (see FIG. 1) as a human detection sensor, an outside temperature sensor, a compressor temperature sensor, a refrigerant pipe temperature sensor, a clock, and the like. NS.
　人検知センサとして、赤外線センサ１１０以外にも、近赤外線センサ、サーモパイル、サーモグラフィー、焦電型センサ、超音波センサ、騒音センサを使用してもよい。人検知センサがサーモパイルである場合、例えば、横×縦が１×１画素、４×４画素、１×８画素で構成され、前面パネル１０６（図１参照）の左右方向中央の下部に設置するとよい。 As the human detection sensor, in addition to the infrared sensor 110, a near infrared sensor, a thermopile, a thermography, a charcoal type sensor, an ultrasonic sensor, and a noise sensor may be used. When the human detection sensor is a thermopile, for example, it is composed of 1 × 1 pixel, 4 × 4 pixel, 1 × 8 pixel in width × length, and is installed in the lower part of the center in the left-right direction of the front panel 106 (see FIG. 1). good.
　また、人検知センサとして、撮像部であってもよい。人体検出部６１（図６参照）は、撮像部で撮像された画像から人の頭部等の位置を検出し、頭部の位置を人の位置としている。さらに、本実施形態では、人の位置に加え、人の足元の位置も検出している。人の足元の位置は、撮像部で撮像された画像に基づいて、直接人の足元の位置を検出するようにしてもよいし、人の頭部等の位置を検出し、人の頭部等の位置から人の足元の位置を推定するようにしてもよい。 Further, the image pickup unit may be used as the human detection sensor. The human body detection unit 61 (see FIG. 6) detects the position of the human head or the like from the image captured by the imaging unit, and sets the position of the head as the human position. Further, in the present embodiment, in addition to the position of the person, the position of the foot of the person is also detected. The position of the person's feet may be directly detected based on the image captured by the imaging unit, or the position of the person's head or the like may be detected and the person's head or the like may be detected. The position of a person's feet may be estimated from the position of.
＜制御部＞
　図６は、本実施形態に係る空気調和機の制御部の構成を示す説明図である。制御部６０は、電装品に備えられている。制御部６０は、送受信部４５を介するリモコン４０からの情報と、センサ部５０からの情報に基づき、室内機１００の送風ファン１０３、左右風向板１０４、上下風向板１０５を駆動し、室外機２００の圧縮機２０２、プロペラファン２０７を駆動する。 <Control unit>
FIG. 6 is an explanatory diagram showing a configuration of a control unit of the air conditioner according to the present embodiment. The control unit 60 is provided in the electrical component. The control unit 60 drives the blower fan 103, the left and right wind direction plates 104, and the vertical wind direction plate 105 of the indoor unit 100 based on the information from the remote controller 40 via the transmission / reception unit 45 and the information from the sensor unit 50, and the outdoor unit 200. Drives the compressor 202 and the propeller fan 207.
　制御部６０は、赤外線センサ１１０の情報に基づき人体を検出する人体検出部６１と、人（人体）の不在を認識するとオートオフ機能により自動的に運転を停止するオートオフ機能部６２、人の不在を認識するとオートセーブ機能により自動的に省エネ設定にする不在省エネ運転機能部６３（オートセーブ機能部）、調和空気の風向を変える風向部を制御する気流制御部６４と、記憶部６５等を備えている。 The control unit 60 includes a human body detection unit 61 that detects a human body based on the information of the infrared sensor 110, an auto-off function unit 62 that automatically stops operation by an auto-off function when recognizing the absence of a person (human body), and a human body. Absence energy saving operation function unit 63 (auto save function unit) that automatically sets energy saving by auto save function when recognizing absence, air flow control unit 64 that controls the wind direction unit that changes the wind direction of harmonized air, storage unit 65, etc. I have.
　図７は、本実施形態に係るオートオフ機能の概要を示す説明図である。オートオフ機能は、前記したように、運転中に人の不在を認識すると自動的に運転を停止する。空気調和機Ａの消し忘れによる、無駄な電力の消費を抑えることができる。ここでは、オートセーブ機能を含めたオートオフ機能について説明する。適宜図６を参照する。 FIG. 7 is an explanatory diagram showing an outline of the auto-off function according to the present embodiment. As described above, the auto-off function automatically stops the operation when it recognizes the absence of a person during the operation. Wasteful power consumption due to forgetting to turn off the air conditioner A can be suppressed. Here, the auto-off function including the auto-save function will be described. Refer to FIG. 6 as appropriate.
　制御部６０は、「オートオフ」を設定して運転中、不在を認識してから、時間Ｔ１（第１の所定時間）後、（１）「オートセーブ（不在省エネ）」になる。その後、（２）不在を認識してから時間Ｔ２（第２の所定時間）経過すると、「オートオフ」（一時停止）する。「オートオフ」中は、赤外線センサ１１０が動作し、人を検知すると自動で運転を開始する。運転を再開したあと、不在を認識すると、（１）に戻る。 The control unit 60 sets "auto-off" and recognizes the absence during operation, and after a time T1 (first predetermined time), (1) "auto-save (absence energy saving)" is set. After that, (2) when time T2 (second predetermined time) elapses after recognizing the absence, "auto-off" (pause) is performed. During the "auto-off", the infrared sensor 110 operates, and when a person is detected, the operation is automatically started. After resuming the operation, if the absence is recognized, the process returns to (1).
　また、（３）「オートオフ」してから時間Ｔ３（第３の所定時間）経過しても、人を検知しない場合は、完全に停止する（「オートオフ」停止）。 Also, (3) If no person is detected even after the lapse of time T3 (third predetermined time) after "auto-off", the system completely stops ("auto-off" stop).
　図８は、本実施形態に係るオートオフ機能の処理を示すフローチャートである。適宜図６を参照する。制御部６０は、「オートオフ」設定を有効中（ステップＳ８０）、不在を検出し（ステップＳ８１）、不在であれば（ステップＳ８１，Ｙｅｓ）、ステップＳ８２に進み、不在でなければ（ステップＳ８１，Ｎｏ）、ステップＳ８１に戻る。 FIG. 8 is a flowchart showing the processing of the auto-off function according to the present embodiment. Refer to FIG. 6 as appropriate. The control unit 60 detects the absence (step S81) while the "auto-off" setting is enabled (step S80), proceeds to step S82 if it is absent (step S81, Yes), and if it is not absent (step S81). , No), return to step S81.
　制御部６０は、不在を検出してから時間Ｔ１経過したか否かを判定し（ステップＳ８２）、時間Ｔ１を経過したならば（ステップＳ８２，Ｙｅｓ）、ステップＳ８３に進み、時間Ｔ１を経過していないならば（ステップＳ８２，Ｎｏ）、ステップＳ８１に戻る。 The control unit 60 determines whether or not the time T1 has elapsed since the absence was detected (step S82), and if the time T1 has elapsed (steps S82, Yes), the process proceeds to step S83 and the time T1 has elapsed. If not (steps S82, No), the process returns to step S81.
　ステップＳ８３において、制御部６０は、「オートセーブ」を開始し、人体を検知したか否かを判定し（ステップＳ８４）、人体を検知しないならば（ステップＳ８４，Ｎｏ）、ステップＳ８５に進み、人体を検知したならば（ステップＳ８４，Ｙｅｓ）、ステップＳ８Ａに進む。 In step S83, the control unit 60 starts "auto-save", determines whether or not the human body has been detected (step S84), and if it does not detect the human body (steps S84, No), proceeds to step S85. If the human body is detected (step S84, Yes), the process proceeds to step S8A.
　制御部６０は、不在を検出してから時間Ｔ２経過したか否かを判定し（ステップＳ８５）、時間Ｔ２を経過したならば（ステップＳ８５，Ｙｅｓ）、ステップＳ８６に進み、時間Ｔ２を経過していないならば（ステップＳ８５，Ｎｏ）、ステップＳ８４に戻る。 The control unit 60 determines whether or not the time T2 has elapsed since the absence was detected (step S85), and if the time T2 has elapsed (steps S85, Yes), the process proceeds to step S86 and the time T2 has elapsed. If not (steps S85, No), the process returns to step S84.
　ステップＳ８６において、制御部６０は、「オートオフ」を開始し、人体を検知したか否かを判定し（ステップＳ８７）、人体を検知しないならば（ステップＳ８７，Ｎｏ）、ステップＳ８８に進み、人体を検知したならば（ステップＳ８７，Ｙｅｓ）、ステップＳ８Ｂに進む。ステップＳ８Ｂにおいて、制御部６０は、運転を開始し、ステップＳ８１に戻る。 In step S86, the control unit 60 starts "auto-off", determines whether or not the human body has been detected (step S87), and if it does not detect the human body (steps S87, No), proceeds to step S88. If the human body is detected (step S87, Yes), the process proceeds to step S8B. In step S8B, the control unit 60 starts operation and returns to step S81.
　制御部６０は、「オートオフ」を開始してから時間Ｔ３経過したか否かを判定し（ステップＳ８８）、時間Ｔ３を経過したならば（ステップＳ８８，Ｙｅｓ）、「オートオフ」を停止する（ステップＳ８９）。一方、制御部６０は、時間Ｔ３を経過していないならば（ステップＳ８８，Ｎｏ）、ステップＳ８７に戻る。 The control unit 60 determines whether or not the time T3 has elapsed since the start of the "auto-off" (step S88), and if the time T3 has elapsed (step S88, Yes), stops the "auto-off". (Step S89). On the other hand, if the time T3 has not elapsed (steps S88, No), the control unit 60 returns to step S87.
　図９は、本実施形態に係るオートオフ機能の有効・無効を示す説明図である。図９は、オートオフ機能の有効・無効を示す図であり、オートオフ許可領域として上限温度ＲＴ１と下限温度ＲＴ２が設定されている。すなわち、
　　　　　　下限温度ＲＴ２≦　室温　≦　上限温度ＲＴ１　　　　（１）
の場合、オートオフ機能の有効であり、
　　　　　　室温＜下限温度ＲＴ２　又は　上限温度ＲＴ１＜室温　（２）
の場合、オートオフ禁止領域としてオートオフ機能が無効となる。 FIG. 9 is an explanatory diagram showing the validity / invalidity of the auto-off function according to the present embodiment. FIG. 9 is a diagram showing the validity / invalidity of the auto-off function, in which the upper limit temperature RT1 and the lower limit temperature RT2 are set as the auto-off permission area. That is,
Lower limit temperature RT2 ≤ room temperature ≤ upper limit temperature RT1 (1)
In the case of, the auto-off function is enabled,
Room temperature <lower limit temperature RT2 or upper limit temperature RT1 <room temperature (2)
In the case of, the auto-off function is disabled as the auto-off prohibited area.
　この設定で、室内にいる人の快適性に配慮しつつ省エネ性も確保することができる。特許文献１に記載されているように焦電型赤外線センサは、室温と人体との温度差が小さいときは人を検知しずらくなる。そのため、人が居るのに居ない判断をする可能性があった。 With this setting, it is possible to secure energy saving while considering the comfort of people in the room. As described in Patent Document 1, the pyroelectric infrared sensor makes it difficult to detect a person when the temperature difference between the room temperature and the human body is small. Therefore, there was a possibility of making a judgment that there was a person but not.
　本実施形態では、熱中症対策のため室温が、例えば３０℃より高いときはオートオフしないにようにする。また、室内機１００からの距離が離れるほど人を検知しずらくなる。このときにおいても、人が居るのに居ないと判断をしても、室温が、例えば３０℃より高いときはオートオフしないようにすることができる。 In this embodiment, as a measure against heat stroke, when the room temperature is higher than, for example, 30 ° C, the auto-off is not performed. Further, the farther the distance from the indoor unit 100 is, the more difficult it becomes to detect a person. Even at this time, even if it is determined that a person is present but not present, the auto-off can be prevented when the room temperature is higher than, for example, 30 ° C.
　他方、低体温症や凍傷のおそれの対策のため、室温が、例えば２℃より低いときはオートオフしないようにすることができる。 On the other hand, as a countermeasure against hypothermia and frostbite, it is possible to prevent auto-off when the room temperature is lower than, for example, 2 ° C.
　また、間取りや家具の配置等により人を検知できない可能性がある場合においても、オートオフ禁止領域では、オートオフ機能を無効としているので、運転が停止することがなく、室内の快適性を維持することができる。 In addition, even if there is a possibility that a person cannot be detected due to the floor plan or the arrangement of furniture, the auto-off function is disabled in the auto-off prohibited area, so the operation does not stop and the comfort of the room is maintained. can do.
　図１０は、本実施形態に係るオートオフ機能の有効・無効の処理を示すフローチャートである。制御部６０は、運転中において、室温がオートオフ許可領域内か否かを判定し（ステップＳ１）、室温がオートオフ許可領域内の場合（ステップＳ１，Ｙｅｓ）、「オートオフ」の設定を有効とし（ステップＳ２）、室温がオートオフ許可領域外の場合（ステップＳ１，Ｎｏ）、「オートオフ」の設定を無効とし（ステップＳ３）、処理を繰り返す。なお、図１０の処理と図８の処理とは並列処理である。 FIG. 10 is a flowchart showing the process of enabling / disabling the auto-off function according to the present embodiment. The control unit 60 determines whether or not the room temperature is within the auto-off permitted region during operation (step S1), and if the room temperature is within the auto-off permitted region (steps S1, Yes), sets “auto-off”. When it is enabled (step S2) and the room temperature is outside the auto-off permitted area (steps S1 and No), the "auto-off" setting is invalidated (step S3), and the process is repeated. The process of FIG. 10 and the process of FIG. 8 are parallel processes.
　図１１は、本実施形態に係るオートセーブ機能の設定温度変化を示す説明図である。制御部６０は、不在を検出してから第１の所定時間（例えば、時間Ｔ１）後「オートセーブ」を開始する（不在省エネ開始）。その際、例えば、制御部６０は、冷房時にリモコン４０の設定温度から２～３℃あげる。具体的には、リモコン４０の設定温度ＲＴ０が２８℃の設定の場合、不在省エネ運転で設定温度３℃上がった場合３１℃となる。３１℃の設定は、オートオフ許可領域として上限温度ＲＴ１が３０℃であることと矛盾し、ユーザの意図しない制御となる。 FIG. 11 is an explanatory diagram showing a change in the set temperature of the auto save function according to the present embodiment. The control unit 60 starts "auto save" after the first predetermined time (for example, time T1) after detecting the absence (absence energy saving start). At that time, for example, the control unit 60 raises the temperature by 2 to 3 ° C. from the set temperature of the remote controller 40 during cooling. Specifically, when the set temperature RT0 of the remote controller 40 is set to 28 ° C., it becomes 31 ° C. when the set temperature rises by 3 ° C. in the absence energy saving operation. The setting of 31 ° C. contradicts that the upper limit temperature RT1 is 30 ° C. as the auto-off permitted region, and the control is not intended by the user.
　そこで、「オートオフ」設定が有効時は、不在省エネの設定温度の上限値を、オートオフ許可領域として上限温度ＲＴ１以下とする。すなわち、制御部６０は、オートオフ機能が有効時、省エネ運転時の設定温度の上限温度をオートオフ許可範囲以内とするとよい。具体的には、制御部６０は、冷房時の省エネ運転時の設定温度の上限温度を上限温度ＲＴ１以下、暖房時の省エネ運転時の設定温度の下限温度を下限温度ＲＴ２以上とする。 Therefore, when the "auto-off" setting is enabled, the upper limit of the set temperature for absent energy saving is set to the upper limit temperature RT1 or less as the auto-off permitted area. That is, when the auto-off function is enabled, the control unit 60 may set the upper limit temperature of the set temperature during the energy-saving operation within the auto-off permission range. Specifically, the control unit 60 sets the upper limit temperature of the set temperature during the energy-saving operation during cooling to the upper limit temperature RT1 or less, and sets the lower limit temperature of the set temperature during the energy-saving operation during heating to the lower limit temperature RT2 or more.
　図１２は、本実施形態に係るオートオフ機能の他の有効・無効を示す説明図である。図９では、オートオフ禁止領域を、（２）式に示すように、室温が下限温度ＲＴ２未満、又は室温が上限温度ＲＴ１を超える場合としていたが、これに限定される必要はない。図１２では、室温と室内の湿度から決定しており、一般的なＷＢＧＴ（Wet Bulb Globe Temperature））に準拠するものである。制御部６０は、オートオフ禁止領域で、「オートオフ」の設定を無効とする。 FIG. 12 is an explanatory diagram showing other enable / disable of the auto-off function according to the present embodiment. In FIG. 9, the auto-off prohibited region is defined as a case where the room temperature is less than the lower limit temperature RT2 or the room temperature exceeds the upper limit temperature RT1 as shown in the equation (2), but it is not necessary to be limited to this. In FIG. 12, it is determined from the room temperature and the humidity in the room, and conforms to a general WBGT (Wet Bulb Globe Temperature). The control unit 60 invalidates the "auto-off" setting in the auto-off prohibited area.
　以上説明した本実施形態の空気調和機は、次の特徴を有する。
　空気調和機Ａは、室温を検知する室温検知手段（例えば、室温センサ５１）と、室内の人を検知する人検知センサと、人検知センサで人を所定時間（例えば、時間Ｔ２）検出できない場合に運転停止を行うオートオフ機能部６２を有する制御部６０と、を備え、制御部６０は、オートオフ機能が有効中に、室温が所定のオートオフ許可範囲外の場合（図９参照）、オートオフ機能を無効とする。これにより、オートオフ機能が設定されている際に、室温が所定のオートオフ許可範囲外の場合にも、室内の空調が継続されるため、室内の快適性を維持することができる。 The air conditioner of the present embodiment described above has the following features.
When the air conditioner A cannot detect a person for a predetermined time (for example, time T2) by the room temperature detecting means (for example, room temperature sensor 51) for detecting the room temperature, the person detecting sensor for detecting a person in the room, and the person detecting sensor. The control unit 60 includes a control unit 60 having an auto-off function unit 62 for stopping the operation, and the control unit 60 is in the case where the room temperature is outside the predetermined auto-off permission range while the auto-off function is enabled (see FIG. 9). Disable the auto-off function. As a result, when the auto-off function is set, even if the room temperature is outside the predetermined auto-off permission range, the air conditioning in the room is continued, so that the comfort of the room can be maintained.
　制御部６０は、室内の不在を認識すると、省エネ運転をする不在省エネ運転機能部６３を有し、制御部６０は、オートオフ機能が有効時、省エネ運転時の設定温度の上限温度をオートオフ許可範囲以内とする。これにより、省エネ運転時の設定温度の上限温度を、オートオフ許可範囲以内とし、室内の快適性を維持することができる。 The control unit 60 has an absent energy-saving operation function unit 63 that performs energy-saving operation when it recognizes the absence in the room, and the control unit 60 automatically turns off the upper limit temperature of the set temperature during the energy-saving operation when the auto-off function is enabled. Within the permitted range. As a result, the upper limit temperature of the set temperature during the energy-saving operation can be set within the auto-off permission range, and the comfort of the room can be maintained.
　制御部６０は、運転モード毎にオートオフ許可範囲の上限温度ＲＴ１、オートオフ許可範囲の下限温度ＲＴ２のうち少なくともいずれかを設定できる。具体的には、暖房時は運転が停止しても室温は下がる傾向にあり、熱中症にはならないことを考慮している。すなわち、暖房と冷房で分けて設定してもよい。 The control unit 60 can set at least one of the upper limit temperature RT1 of the auto-off permission range and the lower limit temperature RT2 of the auto-off permission range for each operation mode. Specifically, it is considered that the room temperature tends to decrease even if the operation is stopped during heating, and heat stroke does not occur. That is, heating and cooling may be set separately.
　室内の湿度を検知する湿度検知手段（例えば、湿度センサ５２）を有し、制御部６０は、室温及び湿度に基づいて熱中症に罹る恐れのある領域であるとき、オートオフ機能を無効とするとよい（図１２参照）。これにより、室内の空調が継続されるため、室内の快適性を維持することができる。 It has a humidity detecting means (for example, a humidity sensor 52) for detecting the humidity in the room, and the control unit 60 disables the auto-off function when it is in an area where there is a risk of heat stroke based on the room temperature and humidity. Good (see Figure 12). As a result, the air conditioning in the room is continued, so that the comfort in the room can be maintained.
　制御部６０は、運転停止後、室温がオートオフ許可範囲の上限温度または下限温度に到達した場合に、運転を再開するとよい。これにより、室内の快適性を維持することができる。 The control unit 60 may restart the operation when the room temperature reaches the upper limit temperature or the lower limit temperature of the auto-off permitted range after the operation is stopped. As a result, the comfort of the room can be maintained.
　制御部６０は、運転停止後に室温がオートオフ上限温度またはオートオフ下限温度に暫近または到達した場合に、運転再開を促すべく音声またはブザーで報知するとよい。熱中症、低体温症や凍結の予防に貢献することができる。 When the room temperature approaches or reaches the auto-off upper limit temperature or the auto-off lower limit temperature after the operation is stopped, the control unit 60 may notify by voice or buzzer to prompt the restart of the operation. It can contribute to the prevention of heat stroke, hypothermia and freezing.
　制御部６０は、運転停止後に室温がオートオフ上限温度またはオートオフ下限温度に到達した場合は、予め登録された登録先の端末にオートオフ許可範囲外になる旨のメールを配信するとよい。具体的には、Ｗｉｆｉ連携を利用して、本人または家族など登録先の端末（例えば、スマートフォン）などに念のための安否確認を促すメールを配信する。 When the room temperature reaches the auto-off upper limit temperature or the auto-off lower limit temperature after the operation is stopped, the control unit 60 may deliver an e-mail to the terminal of the registration destination registered in advance to the effect that it is out of the auto-off permission range. Specifically, using the Wifi cooperation, an e-mail urging the safety confirmation is delivered to the registered terminal (for example, a smartphone) such as the person or his / her family.
　制御部６０は、運転停止後に室温がオートオフ下限温度に漸近した場合に、室温回復（暖房）運転しながら室外熱交換器を凍結処理するとよい。制御部６０は、室外熱交換器（図３の熱交換器２０６参照）を蒸発器として機能させ、室外熱交換器を凍結又は結露させる。これにより、熱交換器２０６に付着した小さなほこりを洗いながすことができる。熱交換器のフィン間の目詰まりによる熱交換能力の低下を抑えることができ、省エネ効果がある。 When the room temperature approaches the lower limit temperature of auto-off after the operation is stopped, the control unit 60 may freeze the outdoor heat exchanger while performing the room temperature recovery (heating) operation. The control unit 60 causes the outdoor heat exchanger (see heat exchanger 206 in FIG. 3) to function as an evaporator, and freezes or condenses the outdoor heat exchanger. As a result, small dust adhering to the heat exchanger 206 can be washed away. It is possible to suppress a decrease in heat exchange capacity due to clogging between the fins of the heat exchanger, which has an energy saving effect.
　人体検出部６１は、人検知センサとして撮像部の画像に基づいて人を検知してもよい。また、人検知センサとして、赤外線センサ、近赤外線センサ、サーモパイル、サーモグラフィー、焦電型センサ、超音波センサ、騒音センサを使用してもよい。温度検知センサとしてサーモパイルを用いる場合、例えば横×縦が１×１画素、４×４画素、１×８画素で構成されるサーモパイルとし、前面パネル１０６の左右方向中央の下部に設置するとよい。温度検知センサで検出するのは、室内の表面温度、人の着衣の表面温度、人の皮膚の温度、床や壁や天井の各部の表面温度を検出することができる。 The human body detection unit 61 may detect a person as a human detection sensor based on the image of the imaging unit. Further, as the human detection sensor, an infrared sensor, a near infrared sensor, a thermopile, a thermography, a charcoal type sensor, an ultrasonic sensor, or a noise sensor may be used. When a thermopile is used as the temperature detection sensor, for example, the thermopile may be composed of 1 × 1 pixel, 4 × 4 pixel, and 1 × 8 pixel in the horizontal × vertical direction, and may be installed in the lower part of the center of the front panel 106 in the left-right direction. The temperature detection sensor can detect the surface temperature of the room, the surface temperature of human clothes, the temperature of human skin, and the surface temperature of each part of the floor, wall, or ceiling.
　４０　　リモコン（空調制御端末）
　４５　　送受信部
　５０　　センサ部
　５１　　室温センサ（室温検知手段）
　５２　　湿度センサ
　６０　　制御部
　６１　　人体検出部
　６２　　オートオフ機能部
　６３　　不在省エネ運転機能部（オートセーブ機能部）
　６４　　気流制御部
　６５　　記憶部
　１００　　室内機
　１０３　　送風ファン
　１０４　　左右風向板（風向部）
　１０５　　上下風向板（風向部）
　１０６　　前面パネル
　１０９ｂ　　空気吹出し口（吹出し口）
　１１０　　赤外線センサ（人検知センサ）
　２００　　室外機
　２０２　　圧縮機
　２０６　　熱交換器（室外熱交換器）
　２０７　　プロペラファン
　Ａ　　空気調和機
　ＲＴ１　　上限温度
　ＲＴ２　　下限温度 40 Remote control (air conditioning control terminal)
45 Transmission / reception unit 50 Sensor unit 51 Room temperature sensor (room temperature detection means)
52 Humidity sensor 60 Control unit 61 Human body detection unit 62 Auto-off function unit 63 Absent energy-saving operation function unit (auto-save function unit)
64 Airflow control unit 65 Storage unit 100 Indoor unit 103 Blower fan 104 Left and right wind direction plate (wind direction part)
105 Vertical wind direction plate (wind direction part)
106 Front panel 109b Air outlet (outlet)
110 Infrared sensor (human detection sensor)
200 Outdoor unit 202 Compressor 206 Heat exchanger (outdoor heat exchanger)
207 Propeller fan A Air conditioner RT1 Upper limit temperature RT2 Lower limit temperature

Claims (10)

  1. 　室温を検知する室温検知手段と、
    　室内の人を検知する人検知センサと、
    　前記人検知センサで前記人を所定時間検出できない場合に運転停止を行うオートオフ機能を有する制御部と、を備え、
    　前記制御部は、前記オートオフ機能が有効中に、前記室温が所定のオートオフ許可範囲外の場合、前記オートオフ機能を無効とする空気調和機。     Room temperature detection means to detect room temperature and
    A person detection sensor that detects people in the room and
    A control unit having an auto-off function for stopping operation when the person cannot be detected for a predetermined time by the person detection sensor is provided.
    The control unit is an air conditioner that disables the auto-off function when the room temperature is outside the predetermined auto-off permission range while the auto-off function is enabled.
  2. 　前記制御部は、前記室内の不在を認識すると、省エネ運転をする不在省エネ運転機能を有し、
    　前記制御部は、前記オートオフ機能が有効時、前記省エネ運転時の設定温度の上限温度を前記オートオフ許可範囲以内とする
    　ことを特徴とする請求項１に記載の空気調和機。     The control unit has an absent energy-saving operation function that performs energy-saving operation when recognizing the absence in the room.
    The air conditioner according to claim 1, wherein the control unit sets the upper limit temperature of the set temperature during the energy-saving operation within the auto-off permission range when the auto-off function is enabled.
  3. 　前記制御部は、運転モード毎に前記オートオフ許可範囲の上限温度、前記オートオフ許可範囲の下限温度のうち少なくともいずれかを設定できる
    　ことを特徴とする請求項１に記載の空気調和機。     The air conditioner according to claim 1, wherein the control unit can set at least one of the upper limit temperature of the auto-off permission range and the lower limit temperature of the auto-off permission range for each operation mode.
  4. 　前記室内の湿度を検知する湿度検知手段を有し、
    　前記制御部は、前記室温及び前記湿度に基づいて熱中症に罹る恐れのある領域であるとき、前記オートオフ機能を無効とする
    　ことを特徴とする請求項１に記載の空気調和機。     It has a humidity detecting means for detecting the humidity in the room, and has
    The air conditioner according to claim 1, wherein the control unit disables the auto-off function when it is in a region where heat stroke may occur based on the room temperature and the humidity.
  5. 　前記制御部は、前記運転停止後、前記室温が前記オートオフ許可範囲の上限温度または下限温度に到達した場合に、運転を再開する
    　ことを特徴とする請求項１に記載の空気調和機。     The air conditioner according to claim 1, wherein the control unit restarts the operation when the room temperature reaches the upper limit temperature or the lower limit temperature of the auto-off permission range after the operation is stopped.
  6. 　前記制御部は、前記運転停止後に前記室温がオートオフ上限温度またはオートオフ下限温度に暫近または到達した場合に、運転再開を促すべく音声またはブザーで報知する
    　ことを特徴とする請求項１に記載の空気調和機。     The first aspect of the present invention is characterized in that, when the room temperature approaches or reaches the auto-off upper limit temperature or the auto-off lower limit temperature after the operation is stopped, the control unit notifies by voice or a buzzer to prompt the restart of the operation. The described air conditioner.
  7. 　前記制御部は、前記運転停止後に前記室温がオートオフ上限温度またはオートオフ下限温度に到達した場合は、予め登録された登録先の端末に前記オートオフ許可範囲外になる旨のメールを配信する
    　ことを特徴とする請求項１に記載の空気調和機。     When the room temperature reaches the auto-off upper limit temperature or the auto-off lower limit temperature after the operation is stopped, the control unit delivers an e-mail to the terminal of the registration destination registered in advance to the effect that the auto-off permission range is not reached. The air conditioner according to claim 1.
  8. 　前記制御部は、前記運転停止後に前記室温がオートオフ下限温度に漸近した場合に、室温回復の運転をしながら室外熱交換器の凍結処理をする
    　ことを特徴とする請求項１に記載の空気調和機。     The air according to claim 1, wherein the control unit freezes the outdoor heat exchanger while operating the room temperature recovery when the room temperature approaches the lower limit temperature of the auto-off after the operation is stopped. Harmony machine.
  9. 　前記人検知センサは、前記人の表面温度を検知する温度検知部、または、焦電型赤外線センサである
    　ことを特徴とする請求項１に記載の空気調和機。     The air conditioner according to claim 1, wherein the person detection sensor is a temperature detection unit that detects the surface temperature of the person, or a pyroelectric infrared sensor.
  10. 　前記人検知センサは、撮像部である
    　ことを特徴とする請求項１に記載の空気調和機。     The air conditioner according to claim 1, wherein the human detection sensor is an imaging unit.
PCT/JP2020/011442 2020-03-16 2020-03-16 Air conditioner WO2021186498A1 (en)

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Citations (3)

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JP2016197011A (en) * 2016-09-01 2016-11-24 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド Air conditioning system and air conditioner
JP2017116255A (en) * 2017-02-20 2017-06-29 シャープ株式会社 Blower
JP2019219128A (en) * 2018-06-21 2019-12-26 三菱重工サーマルシステムズ株式会社 Air conditioning device, air conditioning system and electrical apparatus system

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JP4324830B2 (en) 2000-03-29 2009-09-02 株式会社富士通ゼネラル Control method of air conditioner
CN101904120A (en) 2007-12-21 2010-12-01 罗姆股份有限公司 Information exchange device
JP6116087B2 (en) * 2012-08-31 2017-04-19 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド Air conditioner and control method of air conditioner
JP6765502B2 (en) 2017-03-09 2020-10-07 三菱電機株式会社 Infrared detector, infrared detector and controller

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JP2016197011A (en) * 2016-09-01 2016-11-24 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド Air conditioning system and air conditioner
JP2017116255A (en) * 2017-02-20 2017-06-29 シャープ株式会社 Blower
JP2019219128A (en) * 2018-06-21 2019-12-26 三菱重工サーマルシステムズ株式会社 Air conditioning device, air conditioning system and electrical apparatus system

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