WO2019198277A1 - 空気調和システム - Google Patents

空気調和システム Download PDF

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Publication number
WO2019198277A1
WO2019198277A1 PCT/JP2018/047210 JP2018047210W WO2019198277A1 WO 2019198277 A1 WO2019198277 A1 WO 2019198277A1 JP 2018047210 W JP2018047210 W JP 2018047210W WO 2019198277 A1 WO2019198277 A1 WO 2019198277A1
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WO
WIPO (PCT)
Prior art keywords
air conditioning
room
conditioning performance
air
performance
Prior art date
Application number
PCT/JP2018/047210
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
敬介 内田
Original Assignee
シャープ株式会社
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 シャープ株式会社 filed Critical シャープ株式会社
Priority to CN201880092218.0A priority Critical patent/CN112041619B/zh
Priority to JP2020513066A priority patent/JP7219266B2/ja
Publication of WO2019198277A1 publication Critical patent/WO2019198277A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F11/41—Defrosting; Preventing freezing
    • 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
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F11/48—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits

Definitions

  • This disclosure relates to an air conditioning system including an air conditioner.
  • Some air conditioners can be controlled to start an air conditioning operation in advance so that the room reaches a set temperature at a desired time.
  • the time from the start of the air conditioning operation to reaching the set temperature often varies depending on the air conditioning performance of the room in which the air conditioner is installed. This is because the air conditioning performance of each room is affected by factors such as heat insulation, size, air tightness, and sunlight.
  • the air conditioner disclosed in Patent Document 1 is provided with selection means 13 that changes the operating conditions in accordance with the air conditioning load (airtight performance, heat insulation performance) of the house. Thereby, the operation state is switched according to the airtight performance and heat insulation performance of the house, and an attempt is made to perform the air conditioning operation comfortably and efficiently in a house with different air conditioning loads.
  • an object of one aspect of the present invention is to provide an air conditioning system that can perform more comfortable air conditioning control based on the air conditioning performance of a space in which an air conditioner is installed.
  • the air conditioning system includes a heat pump cycle and a control unit that controls the operation of the heat pump cycle.
  • the control unit changes the control content of the defrosting operation based on the air conditioning performance of the space where the air conditioning control is performed by the heat pump cycle.
  • An air conditioning system includes a heat pump cycle including a compressor, and a control unit that controls the operation of the heat pump cycle.
  • the control unit performs air conditioning control for causing the temperature in the space to reach a set temperature by a set time based on the air conditioning performance of the space in which air conditioning control is performed by the heat pump cycle.
  • the control unit starts the operation of the compressor at a rotational speed within a range where the energy consumption efficiency of the heat pump cycle is optimal.
  • more comfortable air conditioning control can be performed based on the air conditioning performance in the space where the air conditioner is installed.
  • the defrosting operation can be controlled according to the level of heat insulation performance in the space where the air conditioner is installed.
  • FIG. 1 schematically shows a configuration of an air conditioning system 1 according to the present embodiment.
  • the air conditioning system 1 includes an air conditioner 10 and a server 70 as main components.
  • the air conditioner 10 can be connected to the server 70 via the Internet or a router.
  • the air conditioning system 1 stores information related to the air conditioning performance of the room R (space) in which the air conditioner 10 is installed.
  • the information on the air conditioning performance is information serving as an index as to whether or not the space (specifically, the room or the room) in which the air conditioner 10 is installed is an environment that is easily air-conditioned.
  • the air conditioning performance of the room R depends on factors such as the heat insulating property, the area, the air tightness, and the sunlight of the room R. For example, if the thermal insulation of the room R is higher, the temperature of the room R can reach the set temperature in a short time, or the power consumption (necessary heat amount) of the air conditioner 10 during the air conditioning operation can be kept low. it can. Therefore, it is determined that the air conditioning performance of the room R is high. On the other hand, if the heat insulating property of the room R is lower, it is determined that the air conditioning performance of the room R is low.
  • the information regarding the air conditioning performance can be rephrased as the information regarding the heat insulation performance.
  • Information regarding the air conditioning performance of the room R (space) in which the air conditioner 10 is installed may be determined in advance based on various conditions such as the building where the room R exists and the location. Alternatively, for example, a result of evaluation using a method for measuring the air conditioning performance of the room R as described below may be used as information regarding the air conditioning performance.
  • control content of the defrost operation implemented during the heating operation of the air conditioner 10 is changed based on the information regarding the air conditioning performance of the room R.
  • control content of the defrosting operation means the way of the defrosting operation (specifically, the duration of the defrosting operation, the number of executions, etc.).
  • FIG. 2 and 3 show the overall configuration of the air conditioner 10 according to the present embodiment.
  • the flow of the refrigerant (heat medium) during the heating operation of the air conditioner 10 is indicated by a solid arrow
  • the flow of the refrigerant (heat medium) during the cooling operation of the air conditioner 10 is indicated by a broken arrow. Yes.
  • this air conditioner 10 can perform both heating operation and cooling operation, this invention is applicable also to the air conditioner (namely, heating machine) which performs only heating operation.
  • the air conditioner 10 is a separate type air conditioner, and mainly includes an indoor unit 20, an outdoor unit 50, and a remote controller 60.
  • the air conditioner 10 performs heating, cooling, dehumidification, and the like of the room R to be air-conditioned using a heat pump cycle (also referred to as a refrigeration cycle or a refrigerant cycle).
  • a heat pump cycle also referred to as a refrigeration cycle or a refrigerant cycle.
  • the outdoor unit 50 includes a compressor 52, an outdoor heat exchanger 54, a four-way valve 53, an expansion valve 55, and the like. A heat pump cycle is formed by these and the indoor heat exchanger 12 provided on the indoor unit 20 side.
  • the indoor heat exchanger 12 in the indoor unit 20 the compressor 52 in the outdoor unit 50, the outdoor heat exchanger 54, the four-way valve 53, the expansion valve 55, and the like are connected via refrigerant pipes 57 and 58. It is configured by being connected.
  • the outdoor unit 50, the indoor unit 20, and the refrigerant pipes 57 and 58 will be described in detail.
  • Outdoor unit The outdoor unit 50 mainly includes a casing 51, a compressor 52, a four-way valve 53, an outdoor heat exchanger 54, an expansion valve 55, an outdoor blower 56, a refrigerant pipe 57, a refrigerant pipe 58, and two-way. It consists of a valve 59 and a three-way valve 65.
  • the outdoor unit 50 is installed outdoors.
  • the casing 51 includes a compressor 52, a four-way valve 53, an outdoor heat exchanger 54, an expansion valve 55, an outdoor blower 56, a refrigerant pipe 57, a refrigerant pipe 58, a two-way valve 59, a three-way valve 65, an outside air temperature sensor ( And an outdoor heat exchanger temperature sensor 63 and the like are accommodated.
  • the compressor 52 has a discharge pipe 52a and a suction pipe 52b.
  • the discharge pipe 52a and the suction pipe 52b are connected to different connection ports of the four-way valve 53, respectively.
  • the compressor 52 sucks low-pressure refrigerant gas from the suction pipe 52b, compresses the refrigerant gas to generate high-pressure refrigerant gas, and then discharges the high-pressure refrigerant gas from the discharge pipe 52a.
  • the control format of the compressor 52 is not particularly limited, and may be a constant speed compressor or an inverter compressor.
  • the four-way valve 53 is connected to the discharge pipe 52a and the suction pipe 52b of the compressor 52, the outdoor heat exchanger 54, and the indoor heat exchanger 12 through a refrigerant pipe.
  • the four-way valve 53 switches the path of the heat pump cycle according to a control signal transmitted from the control unit 41 (see FIG. 2) of the air conditioner 10 during operation. That is, the four-way valve 53 switches the path between the cooling operation state and the heating operation state.
  • the four-way valve 53 connects the discharge pipe 52a of the compressor 52 to the indoor heat exchanger 12 and connects the suction pipe 52b of the compressor 52 to the outdoor heat exchanger 54. (See solid arrow in FIG. 3).
  • the four-way valve 53 connects the discharge pipe 52a of the compressor 52 to the outdoor heat exchanger 54 and connects the suction pipe 52b of the compressor 52 to the indoor heat exchanger 12 (FIG. 3). (See the dashed arrow).
  • the outdoor heat exchanger 54 has a large number of radiating fins (not shown) attached to a heat transfer tube (not shown) that is bent back and forth at both left and right ends.
  • the outdoor heat exchanger 54 functions as a condenser during the cooling operation, and functions as an evaporator during the heating operation.
  • the expansion valve 55 is an electronic expansion valve whose opening degree can be controlled via a stepping motor.
  • One of the expansion valves 55 is connected to the two-way valve 59 via the refrigerant pipe 57 and the other is connected to the outdoor heat exchanger 54. It is connected.
  • the stepping motor of the expansion valve 55 operates according to a control signal transmitted from the control unit 41 (see FIG. 2) of the air conditioner 10.
  • the expansion valve 55 is in a state in which the high-temperature and high-pressure liquid refrigerant flowing out from the condenser (the indoor heat exchanger 12 during heating and the outdoor heat exchanger 54 during cooling) is easily evaporated during operation. In addition to reducing the pressure, it plays a role of adjusting the amount of refrigerant supplied to the evaporator (the outdoor heat exchanger 54 during heating and the indoor heat exchanger 12 during cooling).
  • the outdoor blower 56 is mainly composed of a propeller fan and a motor.
  • the propeller fan is rotationally driven by a motor, and supplies outdoor outdoor air to the outdoor heat exchanger 54.
  • the motor operates in accordance with a control signal transmitted from a control unit (not shown) of the air conditioner 10.
  • the two-way valve 59 is disposed in the refrigerant pipe 57.
  • the two-way valve 59 is closed when the refrigerant pipe 57 is removed from the outdoor unit 50 to prevent the refrigerant from leaking from the outdoor unit 50 to the outside.
  • the three-way valve 65 is disposed in the refrigerant pipe 58.
  • the three-way valve 65 is closed when the refrigerant pipe 58 is removed from the outdoor unit 50 to prevent the refrigerant from leaking from the outdoor unit 50 to the outside. Further, when it is necessary to recover the refrigerant from the outdoor unit 50 or from the entire heat pump cycle including the indoor unit 20, the refrigerant is recovered through the three-way valve 65.
  • the outdoor heat exchanger temperature sensor 63 is disposed in the vicinity of the outdoor heat exchanger 54 and measures the temperature of the outdoor heat exchanger 54.
  • the outdoor heat exchanger temperature sensor 63 may be disposed in contact with the outdoor heat exchanger 54.
  • the indoor unit 20 is mainly comprised from the housing
  • the housing 11 houses an indoor heat exchanger 12, an indoor fan 13, an indoor heat exchanger temperature sensor 14, an indoor temperature sensor 15, a louver 19, a control unit 41 (see FIG. 2), and the like.
  • the indoor heat exchanger 12 is a combination of three heat exchangers like a roof covering the indoor blower 13. Each heat exchanger has a large number of radiating fins (not shown) attached to a heat transfer tube (not shown) bent back and forth at both left and right ends. These heat exchangers function as a condenser during heating operation and function as an evaporator during cooling operation.
  • an indoor heat exchanger temperature sensor 14 for measuring the temperature of the heat exchanger is disposed.
  • the indoor heat exchanger temperature sensor 14 may be arranged in contact with the indoor heat exchanger 12.
  • the indoor blower 13 is mainly composed of a cross flow fan and a motor.
  • the cross flow fan is rotationally driven by a motor, sucks indoor air into the housing 11 and supplies the air to the indoor heat exchanger 12, and sends out the air heat-exchanged by the indoor heat exchanger 12 into the room.
  • the indoor temperature sensor 15 measures the temperature of the room where the indoor unit 20 is installed.
  • the room temperature sensor 15 is disposed, for example, in the vicinity of a suction port provided in the housing 11 for sucking room air.
  • the louver 19 is formed of a plate member whose angle can be changed. By appropriately changing the angle of the plate member, the air direction of the air sent out by the indoor blower 13 is changed in the vertical direction.
  • the louver 19 also serves as a shutter for controlling on / off (opening / closing) of air blowing into the room.
  • the indoor unit 20 includes an indoor temperature sensor 15, a display unit 23, a communication interface 24, a control unit 41, and the like as configurations other than the above (see FIG. 2).
  • the indoor temperature sensor 15 is an indoor temperature detection means, and measures the temperature in the room R in which the indoor unit 20 is installed.
  • known detection means such as a thermistor can be used.
  • the display unit 23 includes a liquid crystal display panel and an LED light.
  • the display unit 23 displays the operation status and alarms of the air conditioner 10 based on the signal from the control unit 41.
  • the communication interface 24 is realized by an antenna or a connector.
  • the communication interface 24 exchanges data with other devices by wired communication or wireless communication. Specifically, the communication interface 24 receives an infrared signal transmitted when the remote controller 60 is operated.
  • the communication interface 24 receives various signals, various data, various commands and the like transmitted from the server 70.
  • the communication interface 24 can also transmit information on the air conditioner 10 side to the server 70.
  • the control unit 41 is connected to each component in the air conditioner 10 and controls them.
  • the control part 41 is arrange
  • a memory 42, a timer 43, and the like are provided in the control unit 41.
  • the control unit 41 is connected to each component of the heat pump cycle via a signal line. And the control part in an electrical equipment unit controls a heat pump cycle based on a user's instruction
  • the memory 42 includes ROM (read only memory) and RAM (Random access memory).
  • the memory 42 stores an operation program and setting data of the air conditioner 10 and temporarily stores a calculation result by the control unit 41.
  • the timer 43 measures the time of processing performed in the control unit 41 and the operation time of each component in the air conditioner 10 as necessary.
  • the remote controller 60 functions as an operation unit for the user to operate the air conditioner 10. For example, the user can select the operation mode, the set temperature, and the like of the air conditioner 10 by operating the remote controller 60.
  • the refrigerant piping 57 is thinner than the refrigerant piping 58, and the liquid refrigerant flows during operation.
  • the refrigerant pipe 58 is thicker than the refrigerant pipe 57, and a gas refrigerant flows during operation.
  • the compressor 52 of the outdoor unit 50, the four-way valve 53, the outdoor heat exchanger 54 and the expansion valve 55, and the indoor heat exchanger 12 of the indoor unit 20 are sequentially connected by refrigerant pipes 57 and 58, and a heat pump cycle (refrigeration). Cycle).
  • the four-way valve 53 is in the state shown by the solid line in FIG. 3, that is, the discharge pipe 52 a of the compressor 52 is connected to the indoor heat exchanger 12 and the suction pipe of the compressor 52. 52b is connected to the outdoor heat exchanger 54. At this time, the two-way valve 59 and the three-way valve 65 are open.
  • the compressor 52 is started in this state, the gas refrigerant is sucked into the compressor 52 and compressed, and then supplied to the indoor heat exchanger 12 via the four-way valve 53 and the three-way valve 65, The indoor air is heated and condensed to become a liquid refrigerant.
  • the liquid refrigerant is sent to the expansion valve 55 via the two-way valve 59 and is decompressed to be in a gas-liquid two-phase state.
  • the gas-liquid two-phase refrigerant is sent to the outdoor heat exchanger 54 and evaporated in the outdoor heat exchanger 54 to become a gas refrigerant.
  • the gas refrigerant is sucked into the compressor 52 again via the four-way valve 53.
  • the four-way valve 53 is in the state indicated by the broken line in FIG. 3, that is, the discharge pipe 52a of the compressor 52 is connected to the outdoor heat exchanger 54, and the suction pipe of the compressor 52 52b is connected to the indoor heat exchanger 12.
  • the two-way valve 59 and the three-way valve 65 are open.
  • the compressor 52 is started, the gas refrigerant is sucked into the compressor 52 and compressed, and then sent to the outdoor heat exchanger 54 via the four-way valve 53 for outdoor heat exchange. Cooled in the vessel 54 to become a liquid refrigerant.
  • this liquid refrigerant is sent to the expansion valve 55, where it is depressurized and enters a gas-liquid two-phase state.
  • the gas-liquid two-phase refrigerant is supplied to the indoor heat exchanger 12 via the two-way valve 59, cools the indoor air and evaporates to become a gas refrigerant.
  • the gas refrigerant is sucked into the compressor 52 again via the three-way valve 65 and the four-way valve 53.
  • the control unit 41 determines whether or not frost has formed on the outdoor heat exchanger 54 based on the temperature measured by the outdoor heat exchanger temperature sensor 63 or the like.
  • the control unit 41 switches the four-way valve 53 so that the refrigeration cycle is the same as the above-described cooling operation, and defrosts by circulating the refrigerant with the indoor fan stopped ( Reverse defrost).
  • the control part 41 determines whether the frost of the outdoor side heat exchanger 54 was removed appropriately based on the temperature which the outdoor side heat exchanger temperature sensor 63 measured.
  • the control content of a defrost operation is changed. Specifically, the duration and number of times of defrosting operation are changed.
  • the method of the defrosting operation is not limited to the above-described reverse defrosting.
  • the server 70 includes a CPU (Central Processing Unit) 71, a memory 72, a display 73, an operation unit 74, and a communication interface 75 as main components.
  • CPU Central Processing Unit
  • the CPU (control unit) 71 controls each unit of the server 70 by executing a program stored in the memory 72.
  • the CPU 71 executes programs stored in the memory 72 and executes various processes described later by referring to various data.
  • an air conditioning performance evaluation unit 76 is provided inside the CPU 71.
  • the air conditioning performance evaluation unit 76 measures an environmental change in the room R (for example, a temperature change in the room R), and based on the result. Evaluate the air conditioning performance of room R.
  • the CPU 71 of the server 70 receives the operating condition of the air conditioner 10 and the indoor temperature sensor from the communication interface 24 of the air conditioner 10 so that the air conditioner performance evaluation unit 76 can evaluate the air conditioner performance of the room R. Information on 15 measurement data and the like is periodically transmitted.
  • the memory 72 is realized by various RAMs (Random Access Memory), various ROMs (Read-Only Memory), and the like.
  • the memory 72 includes a program executed by the CPU 71, data generated by execution of the program by the CPU 71, input data, and various databases used for operation control of the air conditioner 10 according to the present embodiment.
  • the memory 72 stores the air conditioning performance information (such as the air conditioning performance identification table 81 shown in FIG. 5) of the room R created by the air conditioning performance evaluation unit 76.
  • these pieces of information are stored in the memory 72 in the server 70, but these pieces of information may be stored in other devices accessible by the server 70.
  • the display 73 displays text and images based on signals from the CPU 71.
  • the operation unit 74 receives a command from a service administrator and inputs the command to the CPU 71.
  • the communication interface 75 transmits data from the CPU 71 to other devices such as the air conditioner 10 via the Internet, a carrier network, a router, or the like. Conversely, the communication interface 75 receives data from other devices such as the air conditioner 10 via the Internet, a carrier network, a router, etc., and passes it to the CPU 71.
  • FIG. 5 shows an air conditioning performance identification table 81 stored in the memory 72 in the server 70.
  • the air conditioning performance identification table 81 the identification ID of each room and the air conditioning performance of the room are stored in association with each other. Such a table is effective when there are a plurality of air conditioners that can communicate with the server 70.
  • the room identification ID is assigned to each room in which each air conditioner is installed.
  • a room R ⁇ b> 2 whose air conditioning performance is “medium” is a space having a standard (average) thermal insulation performance in the current evaluation standard of the thermal insulation performance of a house.
  • the room R1 in which the air conditioning performance corresponds to “high” is a space in which the heat insulation performance is approximately 20% or more superior to the room R2 in which the air conditioning performance corresponds to “medium”.
  • the room R3 in which the air conditioning performance is “low” is a space in which the heat insulation performance is inferior by about 20% or more compared to the room R2 in which the air conditioning performance is “medium”.
  • FIG. 6 shows a control content identification table 82 for the defrosting operation stored in the memory 72 in the server 70.
  • the control content of the defrosting operation (specifically, the upper limit value of the duration of the defrosting operation and ON / OFF of the setting of the refrosting operation) corresponds to the air conditioning performance of the room. It is remembered.
  • the upper limit value of the duration of the defrosting operation when the defrosting operation is performed in a room where the air conditioning performance is “low” is set as T2.
  • This upper limit value T2 is shorter than the upper limit value T1 in the room where the air conditioning performance corresponds to “medium” and “high”. This is because in a room with inferior air conditioning performance, the degree of decrease in the room temperature during the defrosting operation is greater than in a room with excellent air conditioning performance.
  • the upper limit value of the duration of the defrosting operation is shortened from a preset upper limit value (for example, T1). By doing, the fall degree of the room temperature during the defrosting operation in the room R can be reduced.
  • “setting of re-defrosting operation” in the control content identification table 82 shown in FIG. 6 is a setting for forcibly performing the defrosting operation again after a predetermined time has elapsed since the completion of the defrosting operation. is there. Such setting is preferably executed when the defrosting is insufficient in the first defrosting operation. Therefore, in the control content identification table 82 shown in FIG. 6, “re-defrosting operation setting” is ON when the air conditioning performance with a relatively short upper limit of the defrosting operation duration is “low”. . On the other hand, when the air conditioning performance having a relatively long upper limit of the defrosting operation is “medium” and “high”, “setting of re-defrosting operation” is OFF.
  • the duration of the defrosting operation is set shorter than that of a room having a standard air conditioning performance, and The number of defrosting operations has been increased compared to standard rooms with air conditioning performance.
  • FIG. 7 shows a processing flow when changing the control content of the defrosting operation of the air conditioner 10 based on the air conditioning performance of the room R. This process is executed when the air conditioner 10 starts the heating operation of the room R, for example. Below, the flow of the change process of the control content of the defrost operation in the air conditioner 10 is demonstrated, referring FIG.
  • step S11 when an operation start command is transmitted to the air conditioner 10 by the user operating the remote controller 60 or the like, the control unit 41 determines whether or not the command is a command to perform a heating operation. Judgment is made (step S11). If the command is a command other than the heating operation (for example, cooling operation) (NO in step S11), the process ends.
  • the control unit 41 notifies the server 70 that there is a command for starting the heating operation.
  • the CPU 71 of the server 70 refers to the air conditioning performance identification table 81 in the memory 72, and acquires information on the air conditioning performance associated with the identification ID of the room in which the air conditioner 10 is installed (step S12). . For example, when the identification ID of the room in which the air conditioner 10 is installed is “R3”, the air conditioning performance “low” is acquired.
  • the CPU 71 of the server 70 refers to the control content identification table 82 in the memory 72 and acquires information regarding the control content of the defrosting operation corresponding to the acquired air conditioning performance of the room R. (Step S13).
  • the server 70 transmits information regarding the acquired control content of the defrosting operation to the air conditioner 10 via the communication interface 75 (step S14).
  • Information transmitted to the air conditioner 10 is transmitted to the control unit 41 via the communication interface 24.
  • the control part 41 changes the information regarding the control content of the defrost operation stored in the memory 42 according to the information transmitted from the server 70 (step S15).
  • step S16 And the air conditioner 10 starts the heating operation (step S16). And the control part 41 removes the removal changed by step S15, for example, when the measurement temperature of the outdoor heat exchanger temperature sensor 63 falls below predetermined temperature, and satisfy
  • the defrosting operation is executed according to the control content of the frost operation.
  • the air conditioning performance of the room R is evaluated from the temperature change in the room R when the air conditioner 10 is performing the defrosting operation.
  • Defrosting operation is performed during heating operation.
  • the refrigerant in the heat pump cycle is circulated in the same direction as during the cooling operation. Since the heating operation is not performed during the defrosting operation, the temperature in the room R tends to decrease. The tendency of this temperature to decrease varies depending on the level of thermal insulation performance in the room.
  • FIG. 8 shows an example of a change in room temperature when the defrosting operation is performed in each room (R1, R2, R3) having different air conditioning performance.
  • the temperature change in the room after the air conditioner 10 starts the defrosting operation depends on the heat insulation and airtightness of each room. As a result, different air conditioning performance is shown for each room.
  • the amount of indoor temperature decrease after the start of the defrosting operation is smaller in the order of room R1 ⁇ room R2 ⁇ room R3. Therefore, the air conditioning performance is evaluated to be higher in the order of room R1> room R2> room R3. Therefore, for example, the room R1 is determined to have the air conditioning performance “high”, the room R2 is determined to have the air conditioning performance “medium”, and the room R3 is determined to have the air conditioning performance “low”.
  • the room R1 is determined to have the air conditioning performance “high”
  • the room R2 is determined to be “medium”
  • the room R3 is determined to have the air conditioning performance “low”.
  • the air conditioning performance of all of the rooms R1, R2, and R3 may be “high”, “medium”, or “low”. That is, various combinations of the air conditioning performances of the rooms R1, R2, and R3 can be considered.
  • the air conditioning performance identification table 81 (see FIG. 5) as described above is created.
  • the degree of indoor temperature change after the air conditioner 10 starts the defrosting operation may be influenced by the outdoor environment such as the outside air temperature and the weather at that time. Therefore, the amount of temperature decrease in the room after the start of the defrosting operation may be measured every time the defrosting operation is performed. And the measurement result for every defrost operation may be accumulate
  • the same air conditioning performance identification table 81 can be used for a plurality of air conditioners that can be connected to the server 70.
  • the air conditioning performance identification table 81 may be updated sequentially with reference to the performance measurement results of each room obtained from a plurality of air conditioners connectable to the server 70.
  • the defrosting operation when the defrosting operation is performed in a room where the air conditioning performance is “low”, the duration of the defrosting operation is made shorter than that of a standard room with the air conditioning performance and the number of times the defrosting operation is performed.
  • the air-conditioning performance is higher than that of a standard room.
  • the air conditioning system 1 according to the present embodiment, more comfortable air conditioning control can be performed based on the air conditioning performance in the room R in which the air conditioner 10 is installed.
  • the air conditioning performance evaluation unit 76 (see FIG. 4) provided in the server 70 measures the air conditioning performance of the room R when it is detected that there is no person in the room R, and the air conditioning performance of the room R is measured. Create information about.
  • the performance of the room R is measured by measuring a change in the temperature in the room R after the air conditioner 10 stops the heating operation in a state where there is no person in the room R.
  • the temperature in the room R is measured by an indoor temperature sensor 15 provided in the air conditioner 10.
  • outside temperature data may be acquired as an index for determining the outdoor environment when measuring the performance of the room R.
  • the outside temperature data can be acquired from an outside temperature sensor (not shown) provided in the outdoor unit 50 of the air conditioner 10.
  • the human sensor 22 detects whether or not there is a person in the room R in which the air conditioner 10 is installed based on a signal from the control unit 41 and transmits the detection result to the control unit 41.
  • the control unit 41 creates data regarding whether or not there is a person in the room R based on the detection result transmitted from the human sensor 22, and the data is transmitted to the server 70 via the communication interface 24. Send to.
  • FIG. 10 shows a process flow until the measurement of the air conditioning performance of the room R in which the air conditioner 10 is installed is started based on a command from the server 70.
  • the CPU 71 in the server 70 determines whether or not to measure the air conditioning performance for the room R in which the air conditioner 10 is installed, according to the flowchart shown in FIG.
  • the process shown in FIG. 10 is performed at the timing when the air conditioner 10 in the room R stops the heating operation.
  • the air conditioner 10 stops the heating operation by operating the remote controller 60 or the like, information indicating that the heating operation has been stopped from the control unit 41 of the air conditioner 10 to the server 70 via the communication interface 24. Sent.
  • the CPU71 in the server 70 will start the process shown in FIG. 10, if the information to the effect that the heating operation was stopped is transmitted from the air conditioner 10.
  • the CPU 71 determines whether or not the heating operation has been continuously performed for a predetermined time (for example, 1 hour or more) (step S21).
  • a predetermined time for example, 1 hour or more
  • the process ends without measuring the air conditioning performance. This is because if the duration of the immediately preceding heating operation is short, the room R may not reach the set temperature, and the air conditioning performance may not be accurately determined.
  • step S21 if the duration of the immediately preceding heating operation is a predetermined time or longer (YES in step S21), it is determined whether or not there is a person in the room R (step S22). This determination is performed based on data transmitted from the air conditioner 10 (data regarding whether or not there is a person in the room R).
  • step S22 if it is determined that there is a person in the room R (YES in step S22), the process ends without measuring the air conditioning performance. This is because if there is a person in the room R, the air conditioning performance of the room R may not be accurately determined.
  • step S22 when it is determined that there is no person in the room R (NO in step S22), the CPU 71 starts measuring the air conditioning performance (step S23).
  • FIG. 11 shows an example of a change in room temperature when the air conditioning performance is measured in each room (R1, R2, R3) having different air conditioning performance.
  • the temperature change in the room after the air conditioner 10 stops the heating operation depends on the heat insulation and airtightness of each room. As a result, different air conditioning performance is shown for each room.
  • the amount of temperature drop in the room after stopping the heating operation is smaller in the order of room R1 ⁇ room R2 ⁇ room R3. Therefore, the air conditioning performance is evaluated to be higher in the order of room R1> room R2> room R3. Therefore, for example, the room R1 is determined to have the air conditioning performance “high”, the room R2 is determined to have the air conditioning performance “medium”, and the room R3 is determined to have the air conditioning performance “low”.
  • the room R1 is determined to have the air conditioning performance “high”
  • the room R2 is determined to be “medium”
  • the room R3 is determined to have the air conditioning performance “low”.
  • the air conditioning performance of all of the rooms R1, R2, and R3 may be “high”, “medium”, or “low”. That is, various combinations of the air conditioning performances of the rooms R1, R2, and R3 can be considered.
  • an air conditioning performance identification table 81 (see FIG. 5) is created in the same manner as in the first embodiment.
  • the air conditioning performance measurement may not be performed.
  • FIG. 5 shows an air conditioning performance identification table 81 stored in the memory 72 in the server 70.
  • the air conditioning performance identification table 81 the identification ID of each room and the air conditioning performance of the room are stored in association with each other. Such a table is effective when there are a plurality of air conditioners that can communicate with the server 70.
  • the room identification ID is assigned to each room in which each air conditioner is installed.
  • FIG. 12 shows a control content identification table 83 for the defrosting operation stored in the memory 72 in the server 70.
  • the control content of the defrosting operation (specifically, the rise value of the room temperature immediately before the defrosting operation, the upper limit value of the duration of the defrosting operation, ON / OFF of the setting of the refrosting operation) And the room temperature increase value immediately before the re-defrosting operation) are stored in association with the air conditioning performance of the room.
  • the “upper limit value of the duration of the defrosting operation” and the “upper limit value of the duration of the defrosting operation” in the control content identification table 83 are the same as those of the control content identification table 82 described in the first embodiment. .
  • the “room temperature increase value immediately before the defrosting operation” in the control content identification table 83 indicates an increase value of the temperature in the room R immediately before the air conditioner 10 starts the defrosting operation with respect to the set temperature. This value is for keeping the temperature in the room R to be higher than the preset temperature to some extent in anticipation that the temperature of the room R can be lowered by temporarily stopping the heating operation during the defrosting operation. Used for control.
  • the control unit 41 refers to this item of the control content identification table 82, and the temperature of the room R measured by the room temperature sensor 15 in accordance with the air conditioning performance of the room R is higher than the set temperature of the current heating operation. Decide whether to give instructions to start defrosting operation when it rises.
  • the “room temperature rise value immediately before the defrosting operation” is set to t1 or more in the room where the air conditioning performance is “high”. Further, the “room temperature rise value immediately before the defrosting operation” is set to t2 or more in the room where the air conditioning performance is “medium”. Further, the “room temperature rise value immediately before the defrosting operation” is set to t3 or more in the room where the air conditioning performance is “low”.
  • t1 ⁇ t2 ⁇ t3.
  • t1 + 1 ° C.
  • t2 + 2 ° C.
  • t3 + 3 ° C.
  • the “room temperature increase value immediately before the re-defrosting operation” in the control content identification table 83 indicates an increase value with respect to the set temperature of the temperature in the room R immediately before the air conditioner 10 starts the re-defrosting operation. Is. This numerical value is used only when “setting of defrosting operation” is ON.
  • the air conditioning performance of the room R is evaluated based on the temperature change in the room during the defrosting operation described in the first embodiment, and the above method is used. You may change the control content of a defrost operation.
  • a method for evaluating the air conditioning performance of the room R methods other than the methods described in the above-described embodiments may be employed.
  • the performance is measured when there is no person in the room R where the air conditioner 10 is installed, and the air conditioning performance of the room R is evaluated. For this reason, it is possible to suppress an error caused by the number of people existing in the room R from being included in the created air conditioning performance information. Therefore, the air conditioning system 1 according to the present embodiment can acquire more accurate information on the air conditioning performance. And by controlling the air conditioning operation based on this information, a more comfortable air conditioning operation can be performed as a result.
  • control content identification table 83 is used to control the defrosting operation. Therefore, in a room with poor air conditioning performance, it is possible to more appropriately suppress the temperature drop in the room R during the defrosting operation.
  • the air conditioning system 1 includes an air conditioner 10 and a server 70 as main components.
  • the overall configuration of the air conditioner 10 is as shown in FIGS. 2 and 3.
  • the configuration of the server 70 is as shown in FIG.
  • the air conditioner 10 includes a compressor 52. Moreover, the control part 41 in the air conditioner 10 starts a heat pump cycle and starts heating operation so that the temperature in the room R may reach the set temperature by the set time. At this time, the control unit 41 performs air conditioning control based on the air conditioning performance of the room R in which the air conditioner 10 is installed. Specifically, when the air conditioning performance of the room R is higher than a predetermined air conditioning performance standard (for example, standard space air conditioning performance), the control unit 41 operates the compressor 52 at the rated operation speed. Let it begin.
  • a predetermined air conditioning performance standard for example, standard space air conditioning performance
  • the rotational speed of the rated operation is an example of the rotational speed within a range where the energy consumption efficiency of the heat pump cycle represented by COP (coefficient of performance) or the like is optimal.
  • the rotational speed of rated operation can be paraphrased as “the optimal rotational speed in terms of power consumption”.
  • start operation of the compressor at the rated operation speed means that the compressor is once rotated at a higher speed to circulate the refrigerant in the heat pump cycle, and then rated. It also includes operations that reduce the rotational speed of the operation. The speed of rated operation is determined by the capacity and specifications of each compressor.
  • FIG. 13 shows the relationship between the operating state of the compressor 52 and the temperature change in the room R when the air conditioner 10 performs control such that the temperature in the room R reaches the set temperature by the set time. It is a graph which shows.
  • FIG. 13 the change in room temperature when the compressor 52 is operated in normal operation is indicated by A, and the change in room temperature when the compressor 52 is operated in rated operation is indicated by B.
  • C represents the change in room temperature when the compressor 52 is operated at the rated operation speed at the beginning of operation and then changed to the normal operation speed.
  • FIG. 13 shows an example in which the temperature in the room R reaches the set temperature at the set time 0 when the compressor 52 is started in the normal operation state at the time t1 before the set time.
  • the control unit 41 starts the operation of the compressor 52 at the rated operation speed.
  • the temperature rise in the room R is slower than when the compressor 52 is operated in normal operation.
  • the control unit 41 starts the operation of the compressor 52 at time t2 before time t1.
  • the temperature in the room R can be made to reach the set temperature at the set time 0 while the compressor 52 is continuously operated at the rated operation speed.
  • the time 0 is 7 o'clock, for example, the time t1 may be 6 o'clock and the time t2 may be 5 o'clock.
  • the control unit 41 determines that the temperature in the room R does not reach the set temperature by the set time 0.
  • the rotational speed of the compressor 52 may be increased from the rotational speed of the rated operation and changed to the operation at the normal rotational speed (see C in FIG. 13).
  • the compressor 52 is started in a normal operation at the time t1, and the temperature in the room R reaches the set temperature at a time earlier than the set time 0 (FIG. 13).
  • the power consumption of the air conditioner 10 can be kept low.
  • the energy consumption efficiency of the heat pump cycle is reduced by setting the rotation speed of the compressor 52 at the start of operation to the rotation speed of the rated operation. Can be improved.
  • the control content of the defrosting operation based on the air conditioning performance of the room R is not changed, and only the control of the rotation speed of the compressor during the heating operation is performed as described above. You may go on.
  • FIG. 14 shows an internal configuration of an air conditioner (air conditioning system) 110 according to the present embodiment.
  • the air conditioner 110 is a separate type air conditioner, and mainly includes an indoor unit 120, an outdoor unit 50, and a remote controller 60.
  • the indoor unit 120 is installed inside the room R. Inside the indoor unit 120, an indoor side heat exchanger 12, an indoor blower 13, an indoor side heat exchanger temperature sensor 14, an indoor temperature sensor 15, a display unit 23, a communication interface 124, a control unit 141, and the like are provided. Yes.
  • the same configuration as that described in the first embodiment can be applied to the indoor heat exchanger 12, the indoor blower 13, the indoor heat exchanger temperature sensor 14, the indoor temperature sensor 15, and the display unit 23.
  • the control unit 141 is connected to each component in the air conditioner 110 and controls them.
  • a memory 142 In the control unit 141, a memory 142, a timer 43, and the like are provided.
  • the timer 43 can be applied with the same configuration as that described in the first embodiment.
  • the control unit 141 is provided with an air conditioning performance evaluation unit 176.
  • the air conditioning performance evaluation unit 176 measures an environmental change in the room R (for example, a temperature change in the room R), and based on the result. Evaluate the air conditioning performance of room R.
  • the air conditioning performance evaluation unit 176 plays the same role as the air conditioning performance evaluation unit 76 of the server 70 described in the first embodiment.
  • the memory 142 includes ROM (read only memory) and RAM (Random access memory).
  • the memory 142 stores an operation program and setting data of the air conditioner 110 and temporarily stores a calculation result by the control unit 141.
  • the memory 142 stores the air conditioning performance information (such as the air conditioning performance identification table 81 shown in FIG. 5) of the room R created by the air conditioning performance evaluation unit 176. That is, the memory 142 plays the same role as the memory 72 of the server 70 described in the first embodiment.
  • the communication interface 124 is realized by an antenna or a connector.
  • the communication interface 124 exchanges data with the remote controller 60 by infrared communication.
  • the air conditioner 110 is not connected to the Internet. Therefore, the communication interface 124 exchanges data only with the remote controller 60.
  • the air conditioner 110 can perform more comfortable air conditioning control based on the air conditioning performance in the room R in which the air conditioner 110 is installed.
  • An air conditioning system includes a heat pump cycle and a control unit that controls the operation of the heat pump cycle.
  • the control unit changes the control content of the defrosting operation based on the air conditioning performance (for example, heat insulation performance) of a space in which air conditioning control is performed by the heat pump cycle.
  • a heat pump cycle includes a compressor that compresses a heat medium, an indoor heat exchanger that functions as an evaporator during cooling operation and an evaporator during cooling operation, an expansion valve that decompresses the heat medium, and heating. It includes an outdoor heat exchanger that functions as an evaporator during operation and also functions as a condenser during cooling operation.
  • the control unit when the air conditioning performance of the space is lower than a predetermined air conditioning performance standard, the control unit shortens the upper limit value of the duration of the defrosting operation. Also good. For example, when the air conditioning performance of the space is lower than the standard air conditioning performance, the control unit shortens the upper limit value of the duration of the defrosting operation from a preset upper limit value. Thereby, in the space where air conditioning performance is inferior, the defrosting operation can be completed in a shorter time, and the temperature drop in the space during the defrosting operation can be suppressed.
  • the control unit may increase the number of defrosting operations when the air conditioning performance of the space is lower than a predetermined air conditioning performance standard.
  • the defrosting operation is completed in a shorter time, while the number of times of performing the defrosting operation is removed in the space having the standard air conditioning performance.
  • You may increase rather than the frequency
  • control unit may determine an increase value of the temperature in the space immediately before performing the defrosting operation based on the air conditioning performance of the space. .
  • control unit may evaluate the air conditioning performance of the space from a temperature change in the space during the defrosting operation.
  • the heat pump cycle may include a compressor.
  • the said control part performs the air-conditioning control which makes the temperature in the said space reach setting temperature by setting time, and when the air-conditioning performance of the said space is higher than a predetermined air-conditioning performance standard, the said control part May start the operation of the compressor at a rotational speed within a range where the energy consumption efficiency of the heat pump cycle is optimal.
  • an air conditioning system includes a heat pump cycle including a compressor, and a control unit that controls the operation of the heat pump cycle.
  • the control unit performs air conditioning control for causing the temperature in the space to reach a set temperature by a set time based on the air conditioning performance of the space in which air conditioning control is performed by the heat pump cycle.
  • the control unit starts the operation of the compressor at a rotational speed within a range where the energy consumption efficiency of the heat pump cycle is optimal.
  • the rotation speed within the range where the energy consumption efficiency of the heat pump cycle is optimal can be determined based on the energy consumption efficiency of the heat pump cycle represented by COP (coefficient of performance), for example.
  • COP coefficient of performance
  • the rotation speed of the compressor when the control unit determines that the temperature in the space does not reach the set temperature by the set time, the rotation speed of the compressor is set to the heat pump. You may make it raise from the rotation speed in the range from which the energy consumption efficiency of a cycle becomes the optimal.
  • to increase the rotational speed of the compressor above the rotational speed within the range where the energy consumption efficiency of the heat pump cycle is optimal for example, changing the operating state of the compressor from the rated operation to the normal operation. means.
  • the air conditioning system according to each aspect of the present invention may further include a server capable of information communication with the control unit.
  • Air conditioning system 10 Air conditioner 20: Indoor unit 41: Control unit 50 (of air conditioner): Outdoor unit 52: Compressor 70: Server 71: CPU (control unit) 76: Air-conditioning performance evaluation unit 110: Air conditioner (air conditioning system) R: Room

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PCT/JP2018/047210 2018-04-11 2018-12-21 空気調和システム WO2019198277A1 (ja)

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JP2014149105A (ja) * 2013-01-31 2014-08-21 Hitachi Appliances Inc 空気調和機
WO2015173868A1 (ja) * 2014-05-12 2015-11-19 三菱電機株式会社 空調装置
JP2017083143A (ja) * 2015-10-30 2017-05-18 ダイキン工業株式会社 空気調和機
JP2018066502A (ja) * 2016-10-19 2018-04-26 株式会社富士通ゼネラル 空気調和機

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