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WO2017090220A1 - Dispositif de climatisation - Google Patents

Dispositif de climatisation Download PDF

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Publication number
WO2017090220A1
WO2017090220A1 PCT/JP2016/004340 JP2016004340W WO2017090220A1 WO 2017090220 A1 WO2017090220 A1 WO 2017090220A1 JP 2016004340 W JP2016004340 W JP 2016004340W WO 2017090220 A1 WO2017090220 A1 WO 2017090220A1
Authority
WO
WIPO (PCT)
Prior art keywords
operation mode
temperature
control unit
dew
dew prevention
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.)
Ceased
Application number
PCT/JP2016/004340
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English (en)
Japanese (ja)
Inventor
遼太 須原
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to CN201680066842.4A priority Critical patent/CN108603680A/zh
Publication of WO2017090220A1 publication Critical patent/WO2017090220A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices

Definitions

  • the present invention relates to an air conditioner.
  • Patent Document 1 Some air conditioners that perform indoor cooling and heating perform so-called dew prevention control during cooling operation (see, for example, Patent Document 1).
  • the room humidity exceeds the first predetermined humidity for a certain time and the temperature difference between the room temperature and the blowing temperature is equal to or greater than the first predetermined temperature difference, the rotation speed of the compressor is reduced. To prevent dew.
  • the present invention has been made paying attention to the above-mentioned problem, and aims to reduce the exposure in the air conditioner so as not to impair the comfort of the user.
  • the first invention is A refrigerant circuit (20) having a heat exchanger (25) for exchanging heat with indoor air and performing a refrigeration cycle by circulating the refrigerant;
  • a control unit (30) for controlling the operation of the refrigerant circuit (20); With The control unit (30) performs a cooling operation as a control mode of the operation, a normal cooling operation mode (M1) for performing a cooling operation for cooling the indoor air so that the temperature of the indoor air approaches a target temperature, and a cooling operation.
  • M1 normal cooling operation mode
  • M2 While having an anti-dew operation mode (M2) that controls the evaporation temperature (Tes) of the refrigerant to prevent dew, and when the discomfort index (D) is higher than a predetermined discomfort index threshold (Thd) Is characterized by not selecting the dew prevention operation mode (M2).
  • the dew-proof operation is performed avoiding when the discomfort index (D) is higher than a predetermined value.
  • the second invention is the first invention, wherein
  • the control unit (30) shifts from the dew prevention operation mode (M2) to the normal cooling operation mode (M1), the control unit (30) sets the target refrigerant evaporation temperature (Tes) to the latest normal cooling operation. It is characterized by being higher than the refrigerant evaporation temperature (Tes) in the mode (M1).
  • dew prevention is performed by controlling the evaporation temperature (Tes).
  • the third invention is the first or second invention, wherein As a condition for selecting the dew prevention operation mode (M2), the controller (30) determines that a difference between the temperature of the intake air sucked from the room to be cooled (Th1) and the target temperature of the room air is a predetermined value.
  • the temperature difference threshold value (Th2) or more is included.
  • the dew prevention operation is not performed when the load is relatively small.
  • a fourth invention is any one of the first to third inventions.
  • the control unit (30) takes the time required to change the temperature of the intake air sucked from the room to be cooled to a predetermined temperature threshold (Th3) or more as a condition for selecting the dew prevention operation mode (M2). Is characterized by including being equal to or greater than a predetermined time threshold.
  • a fifth invention is any one of the first to fourth inventions,
  • the control unit (30) is characterized in that the normal cooling operation mode (M1) is continuously performed for a predetermined time or more as a condition for selecting the dew prevention operation mode (M2).
  • a sixth aspect of the present invention provides any one of the first to fifth aspects,
  • the control unit (30) switches the control mode. It is characterized by switching to the normal cooling operation mode (M1).
  • the dew-proof operation is performed avoiding when the discomfort index (D) is higher than a predetermined value.
  • the dew prevention operation is performed while avoiding the time when the discomfort index (D) is higher than a predetermined value, so that the dew can be reduced so as not to impair the user's comfort. .
  • FIG. 1 is a piping system diagram of an air conditioner according to an embodiment of the present invention.
  • FIG. 2 shows a control flow in the control unit.
  • FIG. 1 is a piping diagram of an air conditioner (10) according to an embodiment of the present invention.
  • the air conditioner (10) includes an outdoor unit (11), an indoor unit (12), and a control unit (30).
  • an outdoor unit (11) and an indoor unit (12) are connected to each other via a liquid side connecting pipe (13) and a gas side connecting pipe (14).
  • the refrigerant circuit (20) is formed by the indoor unit (12), the liquid side connection pipe (13), and the gas side connection pipe (14).
  • the refrigerant circuit (20) is a closed circuit filled with refrigerant, and includes a compressor (21), a four-way switching valve (22), an outdoor heat exchanger (23), an expansion valve (24), and an indoor heat exchanger ( 25) is provided.
  • compressors can be used for the compressor (21).
  • Examples of the compressor (21) include a scroll compressor and a rotary compressor.
  • the outdoor heat exchanger (23) and the indoor heat exchanger (25) are so-called cross fin type heat exchangers.
  • the outdoor heat exchanger (23) exchanges heat between the outdoor air and the refrigerant, and the indoor heat exchanger (25) exchanges heat between the indoor air and the refrigerant.
  • the expansion valve (24) is a so-called electronic expansion valve.
  • the four-way switching valve (22) has first to fourth ports.
  • the four-way switching valve (22) includes a first state (state indicated by a solid line in FIG. 1) in which the first port communicates with the third port and the second port communicates with the fourth port; It is possible to switch to a second state (state indicated by a broken line in FIG. 1) in which the port communicates with the fourth port and the second port communicates with the third port.
  • the discharge port of the compressor (21) is connected to the first port of the four-way switching valve (22), and the suction port is connected to the second port of the four-way switching valve (22). .
  • the outdoor heat exchanger (23), the expansion valve (24), and the indoor heat exchanger are sequentially arranged from the third port to the fourth port of the four-way switching valve (22). (25) and are arranged.
  • the air conditioner (10) the cooling operation and the heating operation are switched by switching the four-way switching valve (22).
  • the outdoor unit (11) is provided with a compressor (21), a four-way switching valve (22), an outdoor heat exchanger (23), and an expansion valve (24).
  • the outdoor unit (11) is provided with an outdoor fan (15) for supplying outdoor air to the outdoor heat exchanger (23).
  • the indoor unit (12) is attached to a room that performs air conditioning.
  • the indoor unit (12) is provided with an indoor heat exchanger (25) and an indoor fan (16). Furthermore, the indoor unit (12) is also provided with a temperature sensor (26) and a relative humidity sensor (27).
  • the temperature sensor (26) is the temperature of the indoor air (hereinafter referred to as “intake air”) that is sucked into the indoor unit (12) from the room to be cooled and sent to the indoor heat exchanger (25) (hereinafter referred to as the suction temperature (Th1)). Detected).
  • the relative humidity sensor (27) detects the humidity (Rh) of the intake air. The detection value of the temperature sensor (26) is sent to the control unit (30). Similarly, the detection value of the relative humidity sensor (27) is also sent to the control unit (30).
  • the control unit (30) has a memory device that stores a microcomputer and a program for operating the microcomputer.
  • the control unit (30) is configured to change the compressor (21) according to the detection value of the temperature sensor (26) installed in the air conditioner (10), the detection value of the relative humidity sensor (27), a user instruction, and the like.
  • the four-way switching valve (22), the expansion valve (24), the outdoor fan (15), and the like are controlled. That is, the control unit (30) controls the operation of the refrigerant circuit (20).
  • the control unit (30) controls the indoor air so that the temperature of the indoor air approaches a target temperature (specifically, a set temperature determined by a user or the like).
  • a target temperature specifically, a set temperature determined by a user or the like.
  • M0 heating operation mode
  • M1 normal cooling operation mode
  • M2 dew-preventing operation mode
  • Tes Tes
  • the control unit (30) switches the four-way switching valve (22) to the second state and controls the opening degree of the expansion valve (24) and the compressor (21).
  • the four-way switching valve (22) is switched to the first state, and the opening degree of the expansion valve (24) and the compressor (21) are controlled.
  • a control part (30) performs dew prevention operation mode (M2), when predetermined conditions (after-mentioned) are satisfied during air_conditionaing
  • the present embodiment is characterized in condition determination when transitioning between the normal cooling operation mode (M1) and the dew prevention operation mode (M2).
  • the dew prevention operation mode (M2) will be described in detail.
  • the dew prevention operation mode (M2) of the present embodiment has two types of operation states, a first dew prevention operation (M2_1) and a second dew prevention operation (M2_2). As will be described later, in the dew prevention operation mode (M2), the first dew prevention operation (M2_1) and the second dew prevention operation (M2_2) are appropriately switched.
  • the control unit (30) when it is necessary to prevent dew condensation during the normal cooling operation mode (M1), the control unit (30) first performs the first dew prevention operation (M2_1). In the first dew prevention operation (M2_1), the control unit (30) sets the target refrigerant evaporation temperature (Tes) to the target refrigerant evaporation temperature (Tes) in the most recent normal cooling operation mode (M1). ) Control higher than. That is, the control unit (30) reduces the cooling capacity of the air conditioner (10). In this example, the control of the refrigerant evaporation temperature (Tes) is realized by controlling the rotational speed of the compressor (21). The rotation speed of the compressor can be controlled, for example, by controlling a power converter that supplies power to a motor (not shown) of the compressor (21).
  • FIG. 2 shows a control flow in the control unit (30).
  • FIG. 2 shows a transition condition between the normal cooling operation mode (M1) and the dew prevention operation mode (M2).
  • start condition the condition used for judgment when shifting from the normal cooling operation mode (M1) to the dew prevention operation mode (M2)
  • end condition the condition used for the determination when shifting from (M2) to the normal cooling operation mode (M1)
  • Start condition (1) Normal cooling operation must be continued for a predetermined time.
  • Start condition (5) The time required to change the suction temperature (Th1) to a predetermined temperature threshold (Th3) or higher is equal to or higher than a predetermined time threshold.
  • the start condition (1) is provided to prevent the user from feeling uncomfortable (for example, hot) when the dew prevention operation is performed immediately after starting the air conditioner (10), for example. It is a condition. Specifically, in the air conditioner (10), the cooling operation is continued for 30 minutes or longer.
  • the starting condition (2) is, for example, that if the difference between the suction temperature (Th1) and the cooling target temperature is small, the rotational speed of the compressor (21) will eventually decrease, and the dew prevention operation mode (M2) will bother. This is a condition provided because it is considered that there is no need to shift.
  • the temperature difference threshold (Th2) 1.0 ° C.
  • the starting condition (3) is that when the discomfort index (D) is higher than the discomfort index threshold (Thd), the dew prevention operation mode (M2) is not selected.
  • the discomfort index (D This means that the dew-proof operation is performed while avoiding high times.
  • This start condition is a condition determined in consideration of user comfort.
  • the discomfort index (D) is calculated by the control unit (30). Specifically, the control unit (30) calculates the discomfort index (D) based on the following equation.
  • Discomfort index (D) 0.81 x Th1 + 0.01 x Rh x (0.99 x Th1-14.3) + 46.3
  • Th1 is the suction temperature
  • Rh is the relative humidity of the intake air
  • the detection value of the relative humidity sensor (27) is used.
  • the discomfort index threshold (Thd) 80.
  • the start condition (4) is a condition provided because it is necessary to prevent dew condensation when the humidity (Rh) is high to some extent.
  • the humidity threshold value is 70%.
  • the second dew prevention operation (M2_2) continues for a predetermined time or longer (in this example, it continues for 60 minutes or more), the operation again (returns) to the first dew prevention operation (M2_1). There is a case.
  • the return to the first dew prevention operation (M2_1) is made on the condition that the “end condition” described below is not satisfied.
  • control unit (30) changes the control mode from the dew prevention operation mode (M2) to the normal mode when at least one of the following termination conditions is satisfied during the execution of the dew prevention operation mode (M2). Transition to cooling operation mode (M1).
  • Termination condition (3) The time required to change the suction temperature (Th1) to a predetermined temperature threshold (Th3) or higher is smaller than the predetermined time threshold.
  • the end condition (3) is a condition that is paired with the start condition (5).
  • ⁇ Operation of air conditioner> For example, when the user commands the air conditioner (10) to perform cooling operation via a remote controller (not shown), the control unit (30) starts control in the normal cooling operation mode (M1) Start counting of the cooling operation execution time. The control unit (30) monitors the detection value of the temperature sensor (26) and the detection value of the relative humidity sensor (27). Further, the control unit (30) determines whether the start condition (1) to the start condition (5) are successful (see FIG. 2).
  • the control unit (30) shifts the control mode to the dew prevention operation mode (M2), whereby the air conditioner ( In 10), the first dew prevention operation (M2_1) is performed.
  • the control unit (30) immediately before the refrigerant evaporation temperature (Tes) in the first dew prevention operation (M2_1) shifts to the dew prevention operation mode (M2).
  • the rotational speed of the compressor (21) is reduced so as to be higher than the evaporation temperature (Tes) in the cooling operation.
  • the control unit (30) monitors the detection value of the temperature sensor (26) and the detection value of the relative humidity sensor (27) and prevents the dew condensation while the dew prevention operation mode (M2) is being executed. The execution time of the operation mode (M2) is also counted. The control unit (30) also determines whether or not the end condition (1) to the end condition (3) are successful (see FIG. 2).
  • the routine proceeds to the normal cooling operation mode (M1). By shifting to the normal cooling operation mode (M1), the room temperature approaches the target temperature (specifically, the set temperature).
  • the dew prevention operation mode (M2) when the discomfort index (D) is higher than the predetermined discomfort index threshold (Thd), the dew prevention operation mode (M2) is not selected (see the start condition (3)).
  • the dew prevention operation mode (M2) can be selected only when the discomfort index (D) is lower than the discomfort index threshold (Thd). Therefore, in the air conditioner (10), it is possible to reduce the exposure so as not to impair the user's comfort.
  • the operation content in the dew prevention operation mode (M2) is an example, and various operations such as adjusting the rotation speed of the compressor (21) and adjusting the angle of the flap of the air outlet provided in the indoor unit (12) Can be controlled.
  • threshold values and time values shown in the above embodiment are examples, and are not limited to the exemplified values.
  • the calculation method of the discomfort index (D) is also an example, and is not limited to the above calculation method.
  • the evaporation temperature (Tes) in the first dew prevention operation (M2_1) may be changed according to the presence or absence of the person. Specifically, when the person is not in the room, the temperature is set higher than the evaporation temperature (Tes) set when the person is in the room.
  • the evaporation temperature (Tes) in the first dew prevention operation (M2_1) may be a predetermined fixed value, or may be determined based on the dew point temperature, for example.
  • the present invention is useful as an air conditioner.

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

Abstract

La présente invention concerne une unité de commande (30) destinée à commander le fonctionnement d'un circuit de fluide frigorigène (10) et comportant, en tant que modes de commande : un mode de fonctionnement à refroidissement normal (M1) dans lequel une opération de refroidissement est effectuée afin de refroidir l'air intérieur de manière à amener la température de l'air intérieur à une température proche d'une température cible ; et un mode de fonctionnement empêchant la condensation en rosée (M2) dans lequel la condensation en rosée est empêchée au moyen de la régulation de la température d'évaporation (Tes) d'un fluide frigorigène pendant l'opération de refroidissement. Lorsqu'un indice d'inconfort (D) est supérieur à un seuil d'indice d'inconfort imposé (Thd), l'unité de commande (30) ne sélectionne pas le mode de fonctionnement empêchant la condensation en rosée (M2).
PCT/JP2016/004340 2015-11-25 2016-09-26 Dispositif de climatisation Ceased WO2017090220A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680066842.4A CN108603680A (zh) 2015-11-25 2016-09-26 空调装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-229959 2015-11-25
JP2015229959A JP2017096568A (ja) 2015-11-25 2015-11-25 空気調和装置

Publications (1)

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WO2017090220A1 true WO2017090220A1 (fr) 2017-06-01

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PCT/JP2016/004340 Ceased WO2017090220A1 (fr) 2015-11-25 2016-09-26 Dispositif de climatisation

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JP (1) JP2017096568A (fr)
CN (1) CN108603680A (fr)
WO (1) WO2017090220A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018151102A (ja) * 2017-03-10 2018-09-27 ダイキン工業株式会社 空気調和装置
CN109724202B (zh) * 2018-12-26 2021-04-20 青岛海尔空调器有限总公司 空调器及其控制方法
JP7448827B2 (ja) * 2021-09-14 2024-03-13 ダイキン工業株式会社 空調システム

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05332594A (ja) * 1992-06-03 1993-12-14 Daikin Ind Ltd 空気調和装置の運転制御装置
JPH06180137A (ja) * 1992-12-09 1994-06-28 Fujitsu General Ltd 空気調和機
JP2004132669A (ja) * 2002-10-15 2004-04-30 Yamatake Corp 空調制御装置および空調装置の運転制御方法
JP2011112289A (ja) * 2009-11-27 2011-06-09 Panasonic Corp 多室型空気調和機
JP2014149099A (ja) * 2013-01-31 2014-08-21 Hitachi Appliances Inc 空気調和機
JP2015059691A (ja) * 2013-09-18 2015-03-30 三菱電機株式会社 空気調和機及び空気調和システム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO783697A0 (en) * 1997-07-10 1997-07-31 Shaw, Allan A low energy high performance variable coolant temperature air conditioning system
EP1083390A3 (fr) * 1999-09-07 2002-12-04 Sharp Kabushiki Kaisha Dispositif de conditionnement d'air avec ventilation et déshumidification
JP2004108659A (ja) * 2002-09-18 2004-04-08 Toyo Biru Kanri Kk 建物の冷房運転方法
JP2013130371A (ja) * 2011-12-22 2013-07-04 Mitsubishi Heavy Ind Ltd 空気調和機の制御装置、空気調和機、及び空気調和機の制御方法
JP6182854B2 (ja) * 2012-12-04 2017-08-23 三菱電機株式会社 空気調和装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05332594A (ja) * 1992-06-03 1993-12-14 Daikin Ind Ltd 空気調和装置の運転制御装置
JPH06180137A (ja) * 1992-12-09 1994-06-28 Fujitsu General Ltd 空気調和機
JP2004132669A (ja) * 2002-10-15 2004-04-30 Yamatake Corp 空調制御装置および空調装置の運転制御方法
JP2011112289A (ja) * 2009-11-27 2011-06-09 Panasonic Corp 多室型空気調和機
JP2014149099A (ja) * 2013-01-31 2014-08-21 Hitachi Appliances Inc 空気調和機
JP2015059691A (ja) * 2013-09-18 2015-03-30 三菱電機株式会社 空気調和機及び空気調和システム

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Publication number Publication date
CN108603680A (zh) 2018-09-28
JP2017096568A (ja) 2017-06-01

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