CN113899059A - Control method of air treatment system and air treatment system - Google Patents

Control method of air treatment system and air treatment system Download PDF

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Publication number
CN113899059A
CN113899059A CN202010575726.3A CN202010575726A CN113899059A CN 113899059 A CN113899059 A CN 113899059A CN 202010575726 A CN202010575726 A CN 202010575726A CN 113899059 A CN113899059 A CN 113899059A
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China
Prior art keywords
air
indoor temperature
relative humidity
indoor
treatment system
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Application number
CN202010575726.3A
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Chinese (zh)
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CN113899059B (en
Inventor
奥野真希
罗翔宇
陈翀鹏
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Daikin Industries Ltd
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Daikin Industries Ltd
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Priority to CN202010575726.3A priority Critical patent/CN113899059B/en
Priority to JP2022531985A priority patent/JP7343824B2/en
Priority to PCT/JP2021/023484 priority patent/WO2021261459A1/en
Priority to EP21829420.5A priority patent/EP4170254A4/en
Publication of CN113899059A publication Critical patent/CN113899059A/en
Application granted granted Critical
Publication of CN113899059B publication Critical patent/CN113899059B/en
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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
    • F24F11/62—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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/0008—Control or safety arrangements for air-humidification
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/153—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

A control method of an air treatment system and the air treatment system are provided, which can easily and effectively prevent the generation of mold. In the method for controlling an air handling system according to the present invention, the air handling system is operated in a mold-proof mode in which the air handling system is caused to perform a mold-proof operation for lowering a relative humidity of a target space to be conditioned by the air handling system when the relative humidity is higher than a target relative humidity, wherein the target relative humidity is set to a% when the relative humidity is lower than or equal to a%, and the target relative humidity is changed in accordance with an indoor temperature when the relative humidity is higher than a%.

Description

Control method of air treatment system and air treatment system
Technical Field
The invention relates to a control method of an air treatment system and the air treatment system.
Background
With the improvement of living standard, people pay more and more attention to the health problems caused by the office living environment.
For example, in recent years, attention has been paid to problems caused by formaldehyde emitted from building materials, furniture, and the like, and there has been an increasing demand for various air treatment facilities such as purifiers and air conditioners having a function of removing formaldehyde.
Similarly to formaldehyde, mycotoxins generated from mold adhering to the surface of building materials and the like also affect the health of people, particularly children, and therefore, air treatment equipment having a mold-proof and bacteriostatic mode is also attracting attention.
Conventionally, an air conditioner, which is one of the air processing devices, suppresses the generation of mold by lowering the temperature of the indoor environment by a weak cooling method, but this may not achieve a good mold-proof effect and may cause a waste of energy.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide a control method of an air treatment system and an air treatment system, which can easily and effectively prevent the generation of mold.
In order to achieve the above object, the present invention provides a method of controlling an air handling system, comprising operating the air handling system in a mold-proof mode in which the air handling system is caused to perform a mold-proof operation for lowering a relative humidity of a target space to be conditioned by the air handling system when the relative humidity is higher than a target relative humidity, wherein the target relative humidity is set to a% when the relative humidity is lower than or equal to a%, and the target relative humidity is changed in accordance with an indoor temperature when the relative humidity is higher than a%.
According to the control method of the air treatment system of the present invention, in the mold-proof mode, when the relative humidity of the target space to be conditioned by the air treatment system is higher than the target relative humidity, the air treatment system is caused to perform the mold-proof operation for lowering the relative humidity, and when the relative humidity is less than or equal to a%, the target relative humidity is set to a%, and when the relative humidity is greater than a%, the target relative humidity is changed in accordance with the indoor temperature, and different target relative humidities are set in accordance with different indoor temperatures, that is, different temperature ranges are differentiated according to the indoor humidity and temperature, and the mold-proof operation is performed at the appropriate target relative humidity.
In the control method of the air treatment system according to the present invention, it is preferable that the target relative humidity is set to b% when the relative humidity is equal to or higher than b%.
According to the control method of the air treatment system of the present invention, the target relative humidity is set to a fixed value when H% is large, and therefore, the calculation of the target relative humidity can be simplified, so that the target relative humidity can be adjusted in quick response to a change in temperature.
Further, in the control method of the air processing system of the present invention, it is preferable that the target relative humidity is linearly changed in a negative correlation with the indoor temperature when a% < the relative humidity < b%.
According to the control method of the air processing system, when the a% < the relative humidity < the b%, the target relative humidity and the indoor temperature are linearly changed in a negative correlation mode, so that the calculation of the target relative humidity can be simplified, the data calculation amount can be reduced, the requirement on hardware equipment can be correspondingly reduced, the cost can be reduced, and the target relative humidity can be quickly adjusted in response to the temperature change.
In the control method of the air handling system according to the present invention, preferably, a is 60, b is 90, and f (Tst) is-2 Tst + 110.
Here, f (Tst) represents a function with the room temperature Tst as a variable.
In the method of controlling an air handling system according to the present invention, it is preferable that when the relative humidity is H% and the target relative humidity is Hst%, the mold-proof operation is stopped when H% < (Hst-5)% is performed during the mold-proof operation, and the mold-proof operation is restarted when H% ≧ (Hst-2)% is performed after the mold-proof operation is stopped.
According to the control method of the air processing system, in the execution process of the mildew-proof operation, when H% < (Hst-5)%, the mildew-proof operation is stopped, so that the waste of energy and the influence on the normal use of the air processing system caused by the useless mildew-proof operation can be avoided; and after the mildew-proof operation is stopped, when H% ≧ Hst-2%, the mildew-proof mode is operated again, so when the indoor humidity fluctuates near the target relative humidity, the normal use of the air treatment system can be prevented from being influenced by the repeated starting and stopping of the mildew-proof operation.
In the method of controlling an air treatment system according to the present invention, it is preferable that, in the mold-proof operation, the air treatment system is caused to perform a cooling operation or a dehumidifying operation when the indoor temperature is higher than a first indoor temperature, and the air treatment system is caused to perform a heating operation when the indoor temperature is lower than a second indoor temperature which is lower than the first indoor temperature.
Here, the "dehumidification operation" may include not only a dehumidification operation of a dehumidifier but also a dehumidification operation in which an indoor unit of an air conditioner performs weak cooling, and may also include a reheat dehumidification operation in which at least one heat exchanger performs cooling and at least one heat exchanger performs heating when the indoor unit of the air conditioner has two or more heat exchangers.
According to the control method of the air processing system of the present invention, in the mold-proof operation, when the indoor temperature is higher than the first indoor temperature, the air processing system is caused to perform the cooling operation or the dehumidifying operation, and when the indoor temperature is lower than the second indoor temperature which is lower than the first indoor temperature, the air processing system is caused to perform the heating operation, so that the humidity in the room can be adjusted in an appropriate mode, and the energy waste caused by the long-time thermal-off state of the air conditioner due to improper mode selection during the mold-proof operation can be avoided, and the expected mold-proof effect cannot be achieved.
In the method for controlling an air treatment system according to the present invention, it is preferable that the air treatment system includes an air conditioner including at least one outdoor unit having a four-way valve for switching between a cooling operation and a heating operation or between a dehumidifying operation and a heating operation of the air conditioner (that is, the four-way valve of the air conditioner has two switching states, namely, a cooling operation or a dehumidifying operation switching state and a heating operation switching state), and when the mold-proof operation is started, a current switching state of the four-way valve is detected.
According to the control method of the air treatment system of the present invention, the current switching state of the four-way valve is detected when the mold-proof operation is started, and therefore, it is possible to easily determine whether or not the cooling operation, the dehumidifying operation, or the heating operation of the air conditioner needs to be switched after the mold-proof operation is performed.
In the control method of the air treatment system according to the present invention, it is preferable that, when the four-way valve is detected to be in a switching state in which the air conditioner can perform a heating operation at the time of start of the mold proof operation, the four-way valve is switched to a switching state in which the air conditioner can perform a cooling operation or a dehumidifying operation when the indoor temperature is higher than the first indoor temperature, and when the four-way valve is detected to be in a switching state in which the air conditioner can perform a cooling operation or a dehumidifying operation at the time of start of the mold proof operation, the four-way valve is switched to a switching state in which the air conditioner can perform a heating operation when the indoor temperature is lower than the second indoor temperature.
In the method of controlling an air treatment system according to the present invention, it is preferable that the air conditioner further includes a first indoor unit capable of performing the mold-proof operation, and when the mold-proof operation of the first indoor unit is started, and it is detected that the four-way valve is in a switching state enabling the air conditioner to perform a heating operation and any one of the at least one second indoor unit is in a heating operation, the four-way valve is not switched to the switching state enabling the air conditioner to perform a cooling operation or a dehumidifying operation when the indoor temperature is higher than the first indoor temperature, and when the mold-proof operation of the first indoor unit is started, the four-way valve is detected that the air conditioner is in a switching state enabling the air conditioner to perform a cooling operation or a dehumidifying operation and any one of the at least one second indoor unit is in a cooling operation, and when the indoor temperature is lower than the second indoor temperature, the four-way valve is not switched to a switching state which can enable the air conditioning device to perform heating operation.
According to the control method of the air treatment system of the present invention, it is easy to avoid the influence of the switching between the cooling operation (dehumidifying operation) and the heating mode of the first indoor unit on the comfort of the person in the installation place of the other indoor unit.
In the air treatment system according to the present invention, it is preferable that the air conditioner is capable of performing a reheat dehumidification operation as the dehumidification operation in the mold-proof operation.
In the method of controlling an air treatment system according to the present invention, it is preferable that the air treatment system includes an air conditioner and a dehumidifier, and in the mold-proof operation, when the indoor temperature is higher than the first indoor temperature, the air conditioner is caused to perform a cooling operation or a dehumidifying operation, and the dehumidifier is caused to perform a powerful dehumidifying operation, and when the indoor temperature is lower than the second indoor temperature, the air conditioner is caused to perform a heating operation, and the dehumidifier is caused to perform a normal dehumidifying operation.
According to the control method of the air processing system of the present invention, when the indoor temperature is higher than the first indoor temperature, the air conditioner is switched to the cooling operation or the dehumidifying operation, and the dehumidifying device is caused to perform the strong dehumidifying operation, so that the dehumidifying load of the air conditioner having a high strength in the cooling mode can be reduced, and the dehumidifying effect can be further improved.
In the method of controlling an air handling system according to the present invention, it is preferable that the air handling system is caused to perform a cooling operation when the indoor temperature is higher than a first indoor temperature in the mold-proof operation.
Here, the first indoor temperature may be set to, for example, 22 ℃, but is not limited thereto.
In the control method of the air treatment system according to the present invention, it is preferable that the relative humidity is detected by an independent sensor.
According to the control method of the air processing system of the invention, the relative humidity is detected by the independent sensor, the user can freely select the setting position of the sensor, preferably the position with higher requirement for inhibiting the mildew, and whether the relative humidity in the room is more accurately determined than the target relative humidity according to the detection data of the selected position, thereby more accurately starting the mildew-proof operation, and more effectively preventing the mildew in a specific area.
In order to achieve the above object, the present invention provides an air treatment system including an air conditioner and a control unit that controls an operation of the air treatment system, wherein the air treatment system further includes a detection unit that acquires data of temperature and humidity in a room, and the control unit controls the operation of the air treatment system according to the data acquired by the detection unit by the control method of the air treatment system.
In the air treatment system according to the present invention, it is preferable that the air treatment system further includes a dehumidifying device provided indoors.
(effect of the invention)
According to the present invention, in the mold-proof mode, when the relative humidity of the target space to be conditioned by the air treatment system is higher than the target relative humidity, the air treatment system is caused to perform the mold-proof operation for lowering the relative humidity, and when the relative humidity is not higher than a%, the target relative humidity is set to a%, and when the relative humidity is higher than a%, the target relative humidity is changed in accordance with the indoor temperature, and different target relative humidities are set in accordance with different indoor temperatures, that is, different temperature ranges are discriminated from each other in accordance with the indoor humidity and temperature, and the mold-proof operation is performed at the appropriate target relative humidity.
Drawings
Fig. 1 is a schematic diagram showing the structure of an air treatment system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram showing a circuit configuration of an air conditioning device included in an air treatment system according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating an example of the operation of the air treatment system according to the embodiment of the present invention.
Fig. 4 is a flowchart showing an example of the operation of the air treatment system according to the modification of the present invention.
Fig. 5 is a schematic diagram showing a circuit configuration of an air conditioning apparatus included in an air processing system according to a modification of the present invention.
(symbol description)
1 air treatment system
110 air conditioner
111 outdoor machine
1111 compressor
1112 four-way valve
1113 outdoor heat exchanger
1114 outdoor fan
1115 outdoor expansion valve
Four-way valve 1116
1117 flow regulator
112 indoor machine
112A first indoor machine
112B second indoor unit
1121 indoor expansion valve
1122 indoor heat exchanger
1123 indoor fan
1124 flow control valve
1125 indoor heat exchanger
120 indoor detection unit
130 control unit
140 mobile terminal
P1 liquid pipe
P2 trachea
P3 piping
Po discharge pipe
Pi suction pipe
P101-1 piping
P101-2 piping
P102 piping
P103 piping
P202 piping
Detailed Description
An air treatment system according to an embodiment of the present invention will be described with reference to fig. 1 and 3, where fig. 1 is a schematic diagram showing a configuration of the air treatment system according to the embodiment of the present invention, and fig. 3 is a flowchart showing an example of an operation of the air treatment system according to the embodiment of the present invention.
(integral construction of air treatment System)
As shown in fig. 1, the air treatment system 1 includes: an indoor unit 112 of the air conditioner 110, the indoor unit 112 having a cooling function and a heating function; an indoor detection unit 120, the indoor detection unit 120 acquiring indoor temperature and humidity data of a target space to be conditioned by the air treatment system 1; and a control unit 130, the control unit 130 controlling the operation of the air processing system 1 based on the data acquired by the indoor detection unit 120.
Here, as shown in fig. 1, the air treatment system 1 further includes a portable terminal 140, and the portable terminal 140 is used for at least one of displaying the operation state of the air treatment system 1, setting the first indoor temperature and the second indoor temperature, and setting the start and stop of the mold-proof mode and the operation time period of the mold-proof mode.
(air-conditioning apparatus)
As described above, the indoor unit 112 of the air conditioner 110 has a cooling function and a heating function.
Here, the air conditioner 110 is a multi-type air conditioner including one outdoor unit 111 and a plurality of indoor units 112 (in the illustrated example, two indoor units, i.e., a first indoor unit 112A and a second indoor unit 112B are shown, but the present invention is not limited thereto, and may include a plurality of first indoor units capable of mold-proof operation) connected to the outdoor unit 111 through a liquid pipe P1 and a gas pipe P2 to form a refrigerant circuit. The outdoor unit 111 includes a compressor 1111, a four-way valve 1112, an outdoor heat exchanger 1113, an outdoor fan 1114, and an outdoor expansion valve 1115, wherein, the compressor 1111 pressurizes and discharges the low-pressure refrigerant to a high pressure, the four-way valve 1112 switches the flow direction of the refrigerant in the refrigerant circuit, the outdoor heat exchanger 1114 exchanges heat between outdoor air and the refrigerant, the outdoor fan 1114 sends outdoor air to the outdoor heat exchanger 1113, and the outdoor expansion valve 1115 controls the flow rate of the refrigerant so that the air-conditioning apparatus 110 can be switched between a state in which a cooling operation (i.e., an operation in which the high-pressure refrigerant discharged from the compressor 1111 flows to the indoor heat exchanger 1112 described below of the indoor unit 112 via the four-way valve 1112) is possible and a heating operation (i.e., an operation in which the high-pressure refrigerant discharged from the compressor 1111 flows to the outdoor heat exchanger 1113 of the outdoor unit 111 via the four-way valve 1112) is possible. The indoor unit 112 includes a first indoor unit 112A and a second indoor unit 112B, and the first indoor unit 112A and the second indoor unit 112B each include an indoor expansion valve 1121, an indoor heat exchanger 1122, and an indoor fan 1123, wherein the indoor expansion valve 1121 controls the flow rate of the refrigerant, the indoor heat exchanger 1122 exchanges heat between the indoor air and the refrigerant, and the indoor fan 1123 sends the indoor air to the indoor heat exchanger 1122.
(indoor detection unit)
As described above, the indoor detection unit 120 acquires indoor temperature and humidity data (specifically, the following relative humidity H% and indoor temperature Ti).
Here, the indoor detection unit 120 is provided separately from the air conditioner 110, and the indoor detection unit 120 includes, for example, a sensor.
(control unit)
As described above, the control unit 130 controls the operation of the air treatment system 1 based on the data acquired by the indoor detection unit 120.
Here, the control unit 130 is provided separately from the air conditioner 110 and the indoor detection unit 120, and the control unit 130 recognizes a command transmitted from the mobile terminal 140, and transmits the command to the air conditioner 110 (the outdoor unit 111 and/or the indoor unit 112) by wired or wireless communication, thereby controlling the operation of the air conditioner 110.
(Mobile terminal)
As described above, the portable terminal 140 is used to display the operating state of the air treatment system 1, set the first indoor temperature and the second indoor temperature, and set the start or stop of the mold-proof mode and the operation time period of the mold-proof mode.
Here, the mobile terminal 140 is a smartphone, and can control the operation of the air conditioner 110 by communicating with the control unit 130 via a router not shown and then communicating with the air conditioner 110 via the control unit 130.
(operation of air treatment System)
In the air handling system 1, the control unit 130 controls the operation of the air handling system 1 based on the temperature and humidity data acquired by the indoor detection unit 120, and operates the air handling system 1 in the mold-proof mode, in which the air handling system 1 is operated in the mold-proof mode when the relative humidity of the target space to be conditioned by the air handling system 1 is higher than the target relative humidity.
Here, when the relative humidity is H%, the target relative humidity is Hst%, and the indoor temperature is Tst ℃, Hst is a when H% is equal to or less than a%, and Hst and Tst are changed in accordance with each other when H% is greater than a%. In the present embodiment, Hst is set to f (Tst) which is a function having Tst as a variable when a% < H% < b%, and Hst is set to b when H% ≧ b%. The a, b, and f (Tst) may be determined in advance by experiments or the like, and may be, for example: a 60, b 90, f (Tst) -2 Tst + 110.
In addition, in the execution process of the mildew-proof operation, when H% < (Hst-5)%, the mildew-proof operation is stopped, and after the mildew-proof operation is stopped, when H% ≧ Hst-2)%, the mildew-proof mode is operated again.
In the mold-proof operation, when the indoor temperature Ti is higher than the first indoor temperature T1, the control unit 130 causes the air handling system 1 to perform the cooling operation, and when the indoor temperature Ti is lower than the second indoor temperature T2, the control unit 130 causes the air handling system 1 to perform the heating operation, and the second indoor temperature T2 is lower than the first indoor temperature T1.
Here, the mold-proof modes include: an information acquisition step of acquiring the relative humidity of the target space adjusted by the air handling system 1; an information judgment step of judging whether the relative humidity acquired in the information acquisition step is greater than a first target relative humidity; and an execution step of causing the air handling system 1 to perform the mold-proof operation when it is determined in the information determination step that the relative humidity is greater than the first target relative humidity.
As shown in fig. 3, after the start of the mold-proof operation of the air handling system 1 (step ST1), the air conditioner 110 is started, the compressor 111 is operated and the outdoor fan 1114 is operated in the outdoor unit 111, and for example, the first indoor unit 112A is started and the indoor fan 1123 is operated, whereby the air conditioner 110 performs the cooling operation or the heating operation by the flow of the refrigerant in the refrigerant circuit. In this state, when the first indoor unit 112A starts the mold proof operation, the control unit 130 detects the current switching state of the four-way valve 1112 (step ST 2). When it is detected that four-way valve 1112 is in the switching state enabling the air-conditioning apparatus 110 to perform the heating operation at the time of startup of the mold-proof operation, it is determined whether or not the indoor temperature Ti is higher than a first indoor temperature T1 (for example, 22 ℃) (step ST3), and when the indoor temperature Ti is higher than a first indoor temperature T1, control section 130 switches four-way valve 1112 to the switching state enabling the air-conditioning apparatus 110 to perform the cooling operation, whereas when the indoor temperature Ti is equal to or lower than the first indoor temperature T1, control section 130 directly performs the heating and drying operation in air-conditioning apparatus 110 (step ST 5). On the other hand, when it is detected that four-way valve 1112 is in the switching state enabling cooling operation of air conditioner 110 at the time of startup of the mold proof operation, it is determined whether or not indoor temperature Ti is lower than second indoor temperature T2 (for example, 18 ℃) (step ST6), and when indoor temperature Ti is lower than second indoor temperature T2, control section 130 switches four-way valve 1112 to the switching state enabling heating operation of air conditioner 110, whereas when indoor temperature Ti is equal to or higher than second indoor temperature T2, control section 130 directly enables cooling operation of air conditioner 110 (step ST 4).
Incidentally, in the present embodiment, the step ST4 is realized by the predetermined cooling operation performed by the air conditioner 110, and in this predetermined cooling operation, the outlet air temperature of the first indoor unit 112A is set to, for example, 16 ℃. In the present embodiment, step ST5 is implemented by a predetermined heating operation performed by the air conditioner 110, in which, for example, the outlet air temperature of the indoor unit is set to be 2 ℃.
Although dehumidification can be achieved by performing both the cooling operation (see step ST4 in fig. 3) and the heating and drying operation (see step ST5 in fig. 3), the dehumidification principles are not the same. Specifically, during the cooling operation, the saturation concentration of moisture in the air decreases as the indoor temperature decreases, and therefore, the moisture in the air can be condensed and precipitated by decreasing the temperature, so that the absolute humidity of the air is decreased, and the relative humidity of the air is decreased; in contrast, when the heating and drying operation is performed, the saturation concentration of moisture in the air increases as the indoor temperature increases, and therefore the relative humidity of the air decreases accordingly.
In the present embodiment, the air conditioner 110 includes one first indoor unit 112A and one second indoor unit 112B, the first indoor unit 112A is capable of performing the mold-proof operation, and when the mold-proof operation of the first indoor unit 112A is started, the four-way valve 1112 is in a switching state for causing the air conditioner 110 to perform the heating operation, and the second indoor unit 112B is in the heating operation, the air conditioner 110 is not switched to the cooling operation when the indoor temperature Ti is higher than the first indoor temperature T1, and when the mold-proof operation of the first indoor unit 112A is started, the four-way valve 1112 is in a switching state for causing the air conditioner 110 to perform the cooling operation, and the second indoor temperature T2 is in the cooling operation, the air conditioner 110 is not switched to the heating operation when the indoor temperature Ti is lower than the second indoor temperature T2.
(main effect of the present embodiment)
According to the air handling system 1 of the present embodiment, in the mold-proof mode, when the relative humidity of the target space to be conditioned by the air handling system 1 is higher than the target relative humidity, the air handling system 1 is caused to perform the mold-proof operation for lowering the relative humidity, and when the relative humidity is H%, the target relative humidity is Hst%, and the indoor temperature is Tst ℃, when H% is equal to or lower than a%, Hst is set to a, and when H% is higher than a%, Hst and Tst are changed in correspondence, different target relative humidities are set according to different indoor temperatures, that is, different temperature ranges are differentiated according to the indoor humidity and temperature, and the mold-proof operation is performed with the appropriate target relative humidity, so that the indoor is easily brought into a temperature and humidity environment in which mold is not easily propagated, and the generation of mold is effectively prevented.
Further, according to the air treatment system 1 of the present embodiment, by linearly changing Hst and Tst in a negative correlation when a% < H% < b%, the calculation of the target relative humidity can be simplified, and the target relative humidity can be adjusted in quick response to a change in temperature.
Further, according to the air handling system 1 of the present embodiment, the air handling system 1 is caused to perform the mold-proof operation when the relative humidity H% of the target space to be conditioned by the air handling system 1 is higher than the target relative humidity Hst%, the control unit 130 is caused to perform the cooling operation of the air conditioner 110 when the indoor temperature Ti is higher than the first indoor temperature T1 during the mold-proof operation, and the control unit 130 is caused to perform the heating operation of the air conditioner 110 when the indoor temperature Ti is lower than the second indoor temperature T2 lower than the first indoor temperature T1, thereby contributing to the conditioning of the indoor humidity and preventing the generation of mold.
The present invention is described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments.
For example, in the above-described embodiment, the indoor unit 112 of the air conditioner 110 has the cooling function and the heating function, and in the mold-proof operation, when the indoor temperature Ti is higher than the first indoor temperature T1, the control unit 130 causes the air conditioner 110 to perform the cooling operation, while, when the indoor temperature Ti is lower than the second indoor temperature T2, the control unit 130 causes the air conditioner 110 to perform the heating operation, and the second indoor temperature T2 is lower than the first indoor temperature T1, but the present invention is not limited thereto, and the indoor unit 112 of the air conditioner 110 may have only the cooling function, and in the mold-proof operation, when the indoor temperature Ti is higher than the first indoor temperature T1, the control unit 130 causes the air conditioner 110 to perform the cooling operation.
Furthermore, in the above embodiment, the air treatment system 1 may further include a dehumidifying device. In this case, for example, the indoor detection unit 120 may be provided in the dehumidifier. In this case, the dehumidifier may have a function of displaying the current humidity value. In this case, when the indoor temperature Ti is higher than the first indoor temperature T1 during the mold-proof operation, the control unit 130 causes the air handling system 1 to perform the cooling operation and/or the dehumidifying operation, that is, in step ST4, the cooling operation of the air conditioner 110 alone may be performed, the cooling operation of the air conditioner 110 and the dehumidifying operation of the dehumidifying device may be performed simultaneously, or only the dehumidifying operation of the dehumidifying device may be performed. In the above case, for example, in the mold proof operation, when the indoor unit 112 is in the cooling operation, the control unit 130 causes the dehumidifying device to perform the strong dehumidifying operation, and when the indoor unit 112 is in the heating operation, the control unit 130 causes the dehumidifying device to perform the normal dehumidifying operation.
In the above-described embodiment, the indoor detection unit 120 acquires indoor temperature and humidity data, and the air processing system 1 is caused To perform the cooling operation and/or the dehumidifying operation when the indoor temperature Ti is higher than the first indoor temperature T1 and the air processing system 1 is caused To perform the heating operation when the indoor temperature Ti is lower than the second indoor temperature T2 in the mold proof operation, but the present invention is not limited To this, and an outdoor detection unit that acquires outdoor temperature data may be provided in addition To the indoor detection unit 120, and the air processing system 1 may be caused To perform the cooling operation and/or the dehumidifying operation when the indoor temperature Ti is higher than the first indoor temperature T1 and the outdoor temperature To is higher than the first outdoor temperature T3 (for example, 20 ℃) (step ST 3: yes) and the indoor temperature Ti is lower than the second indoor temperature T2 and the outdoor temperature To is lower than the second outdoor temperature T4 (for example, 16 ℃ c) lower than the first outdoor temperature T3 in the mold proof operation (step ST3) ) When (step ST 6: yes), the air handling system 1 is caused to perform a heating operation.
In the above-described embodiment, the air conditioner 110 is a two-pipe air conditioner in which the outdoor unit 111 and the indoor unit 112 are connected to each other via the liquid pipe P1 and the air pipe P2, but is not limited to this, and the air conditioner may be a three-pipe air conditioner in which the outdoor unit and at least some of the indoor units are connected to each other via the liquid pipe, the air pipe, and the high-pressure pipe, and may have a configuration shown in fig. 5, for example (in fig. 5, the same reference numerals are given to components corresponding to the air conditioner 110 of the above-described embodiment). In this case, the air conditioner can perform the reheat dehumidification operation as the dehumidification operation. Specifically, the air conditioner includes, in addition to the air conditioner 110: a high-pressure pipe which branches from a discharge pipe Po of the compressor 1111 in the outdoor unit 111 and extends to the first indoor unit 112A, and which includes a pipe P101-1, a pipe P101-2, a pipe P3, and a pipe P202 connected in this order; a four-way valve 1116 provided between the piping P101-1 and the piping P101-2 of the high-pressure pipe in the outdoor unit 111; a flow rate adjustment valve 1124 provided on a portion of the high-pressure pipe located in the first indoor unit 112A; an indoor heat exchanger 1125 provided in a portion of the high-pressure pipe located in the first indoor unit 112A, located between the flow rate adjustment valve 1124 and the four-way valve 1116 in the high-pressure pipe, and located on the downstream side of the indoor heat exchanger 1122 in the air passage formed by the outdoor fan 1123; a pipe P102 branched from a suction pipe Pi of the compressor 111 in the outdoor unit 111; a pipe P103 branched from the pipe P102; and a flow rate adjusting device 1117 (e.g., a capillary tube) provided in the middle of the pipe P103. The four-way valve 1112 can be switched between a first state in which the port a communicates with the port b and the port c communicates with the port d and a second state in which the port a communicates with the port d and the port b communicates with the port c, and the four-way valve 1116 can be switched between a first state in which the port a1 communicates with the port b1 and the port c1 communicates with the port d1 and a second state in which the port a1 communicates with the port d1 and the port b1 communicates with the port c 1. Thus, by switching the four-way valve 1112 and the four-way valve 1116, the air conditioner can switch between the cooling operation (the four-way valve 1112 is in the first state and the four-way valve 1116 is in the second state), the reheating and dehumidifying operation (the four-way valve 1112 is in the first state and the four-way valve 1116 is in the first state, see fig. 5) as the dehumidifying operation, and the heating operation (the four-way valve 1112 is in the second state and the four-way valve 1116 is in the first state). In this case, in step ST4, the cooling operation or the reheat dehumidification operation is selectively performed, and when the reheat dehumidification operation is performed, the outlet air temperature of the first indoor unit 112A is set to be lower than the indoor temperature by, for example, 2 ℃. Of course, the indoor heat exchanger 1125 may be disposed downstream of the indoor heat exchanger 1122, and the four-way valve 1116 may be omitted, in which case the piping P102, the piping P103, and the flow rate adjusting device 1117 are not required.
In the above embodiment, when one indoor unit 112 is performing the mold proof operation, the control unit 130 may prohibit the other indoor units 112 from selecting the cooling or heating.
In the above embodiment, one second indoor unit 112B is provided, but the present invention is not limited to this, and a plurality of second indoor units 112B may be provided.
In the above embodiment, the plurality of indoor units 112 are included, but the present invention is not limited to this, and only one indoor unit 112 may be included.
In the above embodiment, when the control unit 130 has an abnormality in communication with the sensor 120 or the air conditioner 110 during the mildew-proof operation of the indoor unit 112 of the air conditioner 110, the control unit 130 may cause the air conditioner 110 to exit the mildew-proof mode.
In the above embodiment, the air treatment system 1 may further include a human detector provided in a room corresponding to each indoor unit 112, and the control unit 130 may cause the air conditioner 110 not to perform the mold-proof operation when the human detector detects a human being, and cause the air conditioner 110 to perform the mold-proof operation when the human detector detects no human being.
Further, in the above embodiment, the mold-proof mode may also be stopped when the time for which the air handling system 1 operates the mold-proof mode reaches a preset total time period or when the relative humidity H% reaches another target relative humidity lower than the above target relative humidity by a certain amount (e.g., by 5%).
In the above embodiment, the abnormality notification may be transmitted when the mildewproof operation is continued for a preset time (for example, 4 hours) or longer (the relative humidity is always higher than the target relative humidity). Therefore, energy waste caused by abnormal conditions (such as insufficient capacity of the indoor unit, sensor data errors caused by installation positions and faults, high outdoor humidity, unclosed doors and windows and the like) can be avoided.
In addition, in the above embodiment, a warm air blower, an oil heater, or the like may be further included.
In addition, in the above embodiment, the mobile terminal 140 is a smartphone, but the invention is not limited thereto, and the mobile terminal 140 may also be configured by a tablet computer, a cloud server, and the like.
Further, in the above-described embodiment, the control unit 130 is provided separately from the air conditioner 110 and the indoor detection unit 120, but is not limited thereto, and the control unit 130 may be integrated in the air conditioner 110 or the indoor detection unit 120.
In addition, in the above embodiment, the indoor detection unit 120 may include an independent sensor that detects the relative humidity.
In the above embodiment, the air treatment system 1 may further include a remote controller that controls the operation of the air treatment system, and the instruction of the remote controller is preferentially operated when receiving an instruction (for example, an on/off instruction of the indoor unit or an operation mode instruction) from the remote controller after the air treatment system 1 enters the mold-proof operation.
In the above embodiment, Hst is b% when H% ≧ b%, but the present invention is not limited to this, and Hst may be changed in accordance with Tst when H% ≧ b%.
It should be understood that the present invention can freely combine each part and step in the embodiments, or appropriately change and omit each part and step in the embodiments within the scope thereof.

Claims (14)

1. A control method of an air handling system, which causes the air handling system to operate in a mold-proof mode, and causes the air handling system to perform a mold-proof operation in which the relative humidity of a target space to be conditioned by the air handling system is lowered when the relative humidity is higher than a target relative humidity,
setting the target relative humidity as a% when the relative humidity is less than or equal to a%,
when the relative humidity is greater than a%, the target relative humidity is changed corresponding to the indoor temperature.
2. The control method of an air treatment system according to claim 1,
and when the relative humidity is more than or equal to b%, setting the target relative humidity as b%.
3. The control method of an air treatment system according to claim 2,
when a% < the relative humidity < b%, the target relative humidity is linearly changed in negative correlation with the indoor temperature.
4. The control method of an air treatment system according to claim 1,
in the case where the relative humidity is set to H% and the target relative humidity is set to Hst%,
stopping the mildew-proof operation when H% < (Hst-5)% in the execution process of the mildew-proof operation,
and after stopping the mildew-proof operation, when H% ≧ Hst-2%, re-operating the mildew-proof operation.
5. The control method of an air treatment system according to claim 1,
in the above-mentioned mold-proof operation,
when the indoor temperature is higher than a first indoor temperature, the air processing system is enabled to perform cooling operation or dehumidifying operation, and when the indoor temperature is lower than a second indoor temperature, the air processing system is enabled to perform heating operation,
the second indoor temperature is less than the first indoor temperature.
6. The control method of an air treatment system according to claim 5,
the air handling system includes an air conditioning unit,
the air conditioning unit comprises at least one outdoor unit,
the at least one outdoor unit has a four-way valve for switching between cooling operation and heating operation or between dehumidifying operation and heating operation of the air conditioner,
and when the mildew-proof operation is started, detecting the current switching state of the four-way valve.
7. The control method of an air treatment system according to claim 6,
the method includes the steps of switching the four-way valve to a switching state enabling the air conditioning device to perform cooling operation or dehumidifying operation when the four-way valve is detected to be in the switching state enabling the air conditioning device to perform heating operation when the mildew-proof operation is started and when the indoor temperature is higher than the first indoor temperature, and switching the four-way valve to the switching state enabling the air conditioning device to perform heating operation when the four-way valve is detected to be in the switching state enabling the air conditioning device to perform cooling operation or dehumidifying operation when the indoor temperature is lower than the second indoor temperature when the mildew-proof operation is started.
8. The control method of an air treatment system according to claim 6,
the air conditioning device also comprises a first indoor unit and at least one second indoor unit,
the first indoor unit is capable of performing the mold-proof operation,
when the four-way valve is detected to be in a switching state which can enable the air conditioning device to perform heating operation when the mildew-proof operation of the first indoor unit is started and any one of the at least one second indoor unit is in the heating operation, when the indoor temperature is higher than the first indoor temperature, the four-way valve is not switched to a switching state in which the air conditioner can perform cooling operation or dehumidifying operation, when the four-way valve is detected to be in a switching state enabling the air conditioning device to perform cooling operation or dehumidifying operation when the mildew-proof operation of the first indoor unit is started, and any one of the at least one second indoor unit is in cooling operation, and when the indoor temperature is lower than the second indoor temperature, the four-way valve is not switched to a switching state which can enable the air conditioning device to perform heating operation.
9. The control method of an air treatment system according to claim 6,
in the mold-proof operation, the air conditioner is capable of performing a reheat dehumidification operation as the dehumidification operation.
10. The control method of an air treatment system according to claim 5,
the air treatment system comprises an air conditioning device and a dehumidifying device,
in the mold-proof operation, when the indoor temperature is higher than the first indoor temperature, the air conditioner is caused to perform a cooling operation or a dehumidifying operation, and the dehumidifier is caused to perform a powerful dehumidifying operation, and when the indoor temperature is lower than the second indoor temperature, the air conditioner is caused to perform a heating operation, and the dehumidifier is caused to perform a normal dehumidifying operation.
11. The control method of an air treatment system according to claim 1,
in the mold-proof operation, when the indoor temperature is higher than a first indoor temperature, the air treatment system is caused to perform a cooling operation.
12. The control method of an air treatment system according to claim 1,
the relative humidity is detected with a separate sensor.
13. An air handling system comprising an air conditioning unit (110) and a control unit (130), the control unit (130) controlling the operation of the air handling system, characterized in that,
also comprises a detection unit which acquires indoor temperature and humidity data,
the control unit (130) controls the operation of the air handling system in a control method of the air handling system according to any one of claims 1 to 12, based on the data acquired by the detection unit.
14. The air handling system of claim 13,
the air treatment system further comprises a dehumidifying device.
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