US20200378645A1 - Heat exchange ventilation system - Google Patents

Heat exchange ventilation system Download PDF

Info

Publication number
US20200378645A1
US20200378645A1 US16/636,951 US201716636951A US2020378645A1 US 20200378645 A1 US20200378645 A1 US 20200378645A1 US 201716636951 A US201716636951 A US 201716636951A US 2020378645 A1 US2020378645 A1 US 2020378645A1
Authority
US
United States
Prior art keywords
air duct
air
heat exchange
supply
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/636,951
Other languages
English (en)
Inventor
Atsuo DOI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Assigned to MITSUBISHI ELECTRIC CORPORATION reassignment MITSUBISHI ELECTRIC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOI, Atsuo
Publication of US20200378645A1 publication Critical patent/US20200378645A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/67—Switching between heating and cooling modes
    • 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
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • 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
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F2012/007—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using a by-pass for bypassing the heat-exchanger
    • 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
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the present invention relates to a heat exchange ventilation system including a heat exchange ventilator that effects heat exchange between an exhaust air flow for discharging air in a room to the outside of the room and a supply air flow for supplying air outside the room into the room.
  • heat exchange ventilators is a device designed such that an exhaust air flow from a room and a supply air flow from outside the room cross in a total enthalpy heat exchanger element to exchange temperature and humidity between the exhaust air flow and the supply air flow. After that, the temperature of the supply air flow is adjusted by a temperature adjustment device installed in a supply air duct.
  • a temperature adjustment device installed in a supply air duct.
  • Such a type of device is classified into a separate type and an integrated type.
  • another device including a temperature adjustment coil is installed on the air supply duct of the heat exchange ventilator.
  • the temperature adjustment coil is disposed inside the heat exchange ventilator.
  • Patent Literature 1 discloses a total enthalpy heat exchange ventilator including an air conditioning coil in an outdoor air supply passage that extends from an outdoor supply port to an indoor supply port inside a casing.
  • Patent Literature 1 Japanese Patent Application Laid-open No. H8-42893
  • the heat exchange ventilator including the temperature adjustment coil performs ventilation and heating such as early in the winter morning where both the outdoor temperature and the indoor temperature are low
  • the total enthalpy heat exchange element performs temperature exchange between the outdoor air and indoor return air.
  • the temperature of the supply air having passed through the total enthalpy heat exchange element is still low.
  • the temperature of air supplied into the room remains low without increasing to a sufficient temperature in spite of the air temperature being adjusted by the temperature adjustment coil.
  • the heating may take time, or the room may not be heated.
  • the temperature of the supply air flow having passed through the temperature adjustment coil fails to decrease due to a small difference in temperature between the room and the outdoor air.
  • the cooling may take time to lower the indoor temperature to a target temperature, or the room may not be cooled.
  • the heat exchange ventilator is not less required to take in fresh outdoor air when the ventilator is operated such as early in the morning because it is expected that not so many people are present in the room. Such circumstances cause a problem of inefficient air conditioning such as when low temperature outdoor air is taken in through ventilation in spite of the room having not yet been heated in winter.
  • a heat exchange ventilation system is a heat exchange ventilation system including a heat exchange ventilator, a supply air duct to supply outdoor air outside a room into the room, and an exhaust air duct to discharge air in the room to the outside of the room.
  • the heat exchange ventilation system comprises the heat exchange ventilator including: a casing having an internal supply air duct and an internal exhaust air duct that are formed therethrough, the internal supply air duct being the supply air duct inside the heat exchange ventilator, the internal exhaust air duct being the exhaust air duct inside the heat exchange ventilator, the internal supply air duct and the internal exhaust air duct being independent of each other; a supply blower provided in the internal supply air duct; an exhaust blower provided in the internal exhaust air duct; and a heat exchange element provided inside the casing to effect heat exchange between air passing through the internal supply air duct and air passing through the internal exhaust air duct.
  • the heat exchange ventilation system further comprises: a temperature adjusting coil disposed downstream of the heat exchange element in the supply air duct to heat or cool air passing through the supply air duct downstream of the heat exchange element; a return air supply duct to return the air in the room to a portion of the supply air duct located upstream of the temperature adjustment coil; an air duct switching damper to switch between the supply air duct and the return air supply duct, the supply air duct being an air duct for taking in the outdoor air; an outdoor air temperature sensor to detect temperature of the outdoor air; a return air temperature sensor to detect temperature of the air in the room that is to be discharged to the outside of the room; and a controller to control operations of the heat exchange ventilator, the temperature adjustment coil, and the air duct switching damper.
  • the heat exchange ventilation system includes the heat exchange ventilator and the temperature adjustment coil, and has an effect that the temperature of air supplied into the room can be efficiently adjusted.
  • FIG. 1 is a schematic diagram illustrating a simplified configuration of a heat exchange ventilation system according to a first embodiment of the present invention.
  • FIG. 3 is a diagram illustrating an example of a hardware configuration of a processing circuit according to the first embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating an example of the procedure of an air duct switching operation during operation of the heat exchange ventilation system according to a second embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating an example of the procedure of an air duct switching operation during operation of the heat exchange ventilation system according to a third embodiment of the present invention.
  • FIG. 7 is a flowchart illustrating an example of the procedure of an air duct switching operation during operation of the heat exchange ventilation system according to a fourth embodiment of the present invention.
  • FIG. 9 is a schematic diagram illustrating a simplified configuration of a heat exchange ventilation system according to a sixth embodiment of the present invention.
  • FIG. 10 is a schematic diagram illustrating a simplified configuration of a heat exchange ventilation system according to a seventh embodiment of the present invention.
  • the heat exchange ventilation system 100 is a heat exchange ventilation system that includes a supply air duct 11 for supplying outdoor air, which is air outside a room, into the room and an exhaust air duct 12 for discharging air in the room to the outside of the room.
  • the heat exchange ventilation system 100 includes a heat exchange ventilator 1 .
  • the heat exchange ventilator 1 includes a casing 1 e and a heat exchange element 2 disposed inside a casing 1 e .
  • the heat exchange element 2 is a total enthalpy heat exchanger.
  • a reference character “OA” indicates outdoor air
  • a reference character “SA” indicates supply air
  • a reference character “RA” indicates return air
  • a reference character “EA” indicates exhaust air.
  • the supply air duct 11 of the heat exchange ventilation system 100 is divided into three air ducts: an upstream supply air duct 11 a ; an internal supply air duct 11 b ; and a downstream supply air duct 11 c .
  • the upstream supply air duct 11 a is disposed upstream of the heat exchange ventilator 1 and communicates with the outside of the room.
  • the internal supply air duct 11 b defines the supply air duct 11 inside the heat exchange ventilator 1 .
  • the downstream supply air duct 11 c is disposed downstream of the heat exchange ventilator 1 and communicates with the room.
  • the heat exchange ventilator 1 includes the internal supply air duct 11 b and the internal exhaust air duct 12 b .
  • the internal supply air duct 11 b which defines the supply air duct 11 in the heat exchange ventilator 1 , connects the outdoor air inlet 1 a and the supply air outlet 1 b to each other via the heat exchange element 2 .
  • the internal exhaust air duct 12 b which defines the exhaust air duct 12 in the heat exchange ventilator 1 , connects the indoor air inlet 1 c and the exhaust air outlet 1 d to each other via the heat exchange element 2 .
  • the internal supply air duct 11 b and the internal exhaust air duct 12 b are air ducts independent of each other.
  • the internal supply air duct 11 b which is the air duct for supplying the outdoor air OA into the room, includes a pre-heat-exchange outdoor air duct 11 ba , a post-heat-exchange outdoor air duct 11 bb , and a heat exchange element supply air duct 11 bc .
  • the pre-heat-exchange outdoor air duct 11 ba is formed between the outdoor air inlet 1 a and the heat exchange element 2 .
  • the post-heat-exchange outdoor air duct 11 bb is formed between the heat exchange element 2 and the supply air outlet 1 b .
  • the heat exchange element supply air duct 11 bc is formed inside the heat exchange element 2 .
  • the internal exhaust air duct 12 b is the air duct for discharging to the outside of the room the return air RA which is the indoor air.
  • the internal exhaust air duct 12 b includes a pre-heat-exchange indoor air duct 12 ba , a post-heat-exchange indoor air duct 12 bb , and a heat exchange element exhaust air duct 12 bc .
  • the pre-heat-exchange indoor air duct 12 ba is formed between the indoor air inlet 1 c and the heat exchange element 2 .
  • the post-heat-exchange indoor air duct 12 bb is formed between the heat exchange element 2 and the exhaust air outlet 1 d .
  • the heat exchange element exhaust air duct 12 bc is formed inside the heat exchange element 2 .
  • the post-heat-exchange outdoor air duct 11 bb and the post-heat-exchange indoor air duct 12 bb are separated by the heat exchange element 2 .
  • the pre-heat-exchange outdoor air duct 11 ba and the pre-heat-exchange indoor air duct 12 ba are separated by the heat exchange element 2 .
  • the pre-heat-exchange outdoor air duct 11 ba and the post-heat-exchange indoor air duct 12 bb are separated by a partition wall 7 having a flat plate shape.
  • the pre-heat-exchange indoor air duct 12 ba and the post-heat-exchange outdoor air duct 11 bb are separated by a partition wall 8 .
  • the supply blower 3 is disposed in the post-heat-exchange outdoor air duct 11 bb and includes therein a supply motor (not shown) for driving the supply blower 3 .
  • the exhaust blower 4 is disposed in the post-heat exchange indoor air duct 12 bb and includes therein an exhaust motor (not shown) for driving the exhaust blower 4 .
  • the speeds of the supply motor and the exhaust motor change according to control by the controller 31 described later.
  • the upstream exhaust air duct 12 a is an indoor air intake duct for taking in the indoor air and directing the indoor air to the heat exchange ventilator 1 .
  • the exhaust air outlet 1 d is connected to the downstream exhaust air duct 12 c that is formed of a duct pipe.
  • the downstream exhaust air duct 12 c is an exhaust air outlet duct for directing an exhaust air flow from the heat exchange ventilator 1 to the outdoors.
  • the temperature adjustment coil 21 heats the supply air passing therethrough. Moreover, when the supply air supplied from the heat exchange ventilator 1 passes through the temperature adjustment coil 21 , the temperature adjustment coil 21 cools the supply air passing therethrough.
  • the outdoor air OA flows through the upstream supply air duct 11 a communicating with the outside of a building and then through the outdoor air inlet 1 a into the pre-heat exchange outdoor air duct 11 ba , thereby becoming a supply air flow.
  • the supply air flow into the pre-heat-exchange outdoor air duct 11 ba passes through the heat exchange element 2 , the post-heat exchange outdoor air duct 11 bb , the supply blower 3 , the supply air outlet 1 b , the downstream supply air duct 11 c , the temperature adjustment coil 21 , and the downstream supply air duct 11 c , after which the supply air flow is discharged into the room.
  • an outdoor air temperature sensor 5 Disposed in the pre-heat-exchange outdoor air duct 11 ba is an outdoor air temperature sensor 5 for detecting the temperature of the air passing through the pre-heat-exchange outdoor air duct 11 ba , that is, the temperature of the outdoor air.
  • the outdoor air temperature sensor 5 detects the temperature of the outdoor air in a predetermined cycle set in advance while the power of the heat exchange ventilator 1 is placed in an on state, and transmits information on the detected temperature of the outdoor air to the controller 31 described later.
  • a return air temperature sensor 6 Disposed in the pre-heat exchange indoor air duct 12 ba is a return air temperature sensor 6 for detecting the indoor temperature by detecting the temperature of the air passing through the pre-heat-exchange indoor air duct 12 ba , that is, the temperature of the return air being the indoor air.
  • the return air temperature sensor 6 detects the temperature of the indoor air in a cycle set in advance while the power of the heat exchange ventilator 1 is placed in an on state, and transmits information on the detected temperature of the indoor air to the controller 31 described later.
  • a branch supply air duct 13 formed of a duct pipe is connected to a point on the upstream supply air duct 11 a forming the outdoor air intake duct.
  • the upstream supply air duct 11 a communicates with the room. That is, the branch supply air duct 13 , which is connected to the upstream supply air duct 11 a for allowing the upstream supply air duct 11 a to communicate with the room, branches off from the upstream supply air duct 11 a of the supply air duct 11 at a portion of the upstream supply air duct 11 a located upstream of the heat exchange ventilator 1 .
  • the heat exchange ventilation system 100 is provided with an air duct switching damper.
  • the air duct switching damper switches between the supply air duct 11 and a return air supply duct.
  • the supply air duct 11 is the air duct for taking in the outdoor air
  • a return air supply duct is the air duct for returning air in the room to a portion of the supply air duct located upstream of the temperature adjustment coil 21 and circulating the indoor air.
  • the air duct switching damper which is disposed at a portion of the upstream supply air duct 11 a , is a first air duct switching damper 22 disposed at a portion of the upstream supply air duct 11 a of the supply air duct located upstream of the heat exchange ventilator 1 .
  • the first air duct switching damper 22 switches between a first air duct and a second air duct.
  • the first air duct is an air duct for taking in the outdoor air as the first air duct switching damper 22 closes the branch supply air duct 13 and opens the upstream supply air duct 11 a .
  • the second air duct is an air duct for allowing a part of the upstream supply air duct 11 a located downstream of the branch supply air duct 13 to communicate with the branch supply air duct 13 so as to circulate the indoor air as the first air duct switching damper 22 closes the upstream side of the upstream supply air duct 11 a .
  • the second air duct is the return air supply duct.
  • the first air duct switching damper 22 is formed of, for example, a plate rotating inside the upstream supply air duct 11 a .
  • a motor 24 is driven by motor controller 23 under the control of the controller 31 , such that the first air duct switching damper 22 changes its orientation inside the upstream supply air duct 11 a to thereby switch between the first air duct and the second air duct.
  • the controller 31 has a function as an operation controller that controls the operations of the heat exchange ventilator 1 , the temperature adjustment coil 21 , and the air duct switching damper, and a function as a communication unit that transmits an air duct switching signal and performs information communication with another component in the heat exchange ventilation system 100 .
  • the controller 31 controls the operation of the heat exchange ventilator 1 on the basis of: information instructing an operation of the heat exchange ventilator 1 , the information being received by and transmitted from the remote control 32 ; or information instructing the operation, the information being preset in the controller 31 .
  • the controller 31 controls the operation of the temperature adjustment coil 21 on the basis of: information instructing an operation of the temperature adjustment coil 21 , the information being received by and transmitted from the remote control 32 ; or information instructing the operation, the information being preset in the controller 31 .
  • the controller 31 also controls the operation of the first air duct switching damper 22 on the basis of: information instructing an operation of the first air duct switching damper 22 , the information being received by and transmitted from the remote control 32 ; or information instructing the operation, the information being preset in the controller 31 .
  • the controller 31 executes first switching control for placing the first air duct switching damper 22 in a position to switch from the supply air duct 11 to the return air supply duct when the temperature of the outdoor air detected by the outdoor air temperature sensor 5 and the temperature of the air in the room detected by the return air temperature sensor 6 satisfy a predetermined temperature condition during a heating operation mode of the temperature adjustment coil 21 for heating the air or during a cooling operation mode of the temperature adjustment coil 21 for cooling the air.
  • the controller 31 executes the first switching control when: the temperature adjustment coil 21 is operated in the cooling operation mode; the temperature of the outdoor air detected by the outdoor air temperature sensor 5 is higher than or equal to a predetermined third temperature threshold; and the temperature of the air in the room detected by the return air temperature sensor 6 is higher than or equal to a predetermined fourth temperature threshold.
  • the predetermined third temperature threshold which is a temperature threshold for the outdoor air temperature sensor 5 , allows the controller 31 to determine whether or not to execute the first switching control when the temperature adjustment coil 21 is operated in the cooling operation mode.
  • the predetermined fourth temperature threshold which is a temperature threshold for the return air temperature sensor 6 , allows the controller 31 to determine whether or not to execute the first switching control when the temperature adjustment coil 21 is operated in the cooling operation mode.
  • the controller 31 executes second switching control for restoring the first air duct switching damper 22 to a position to switch from the branch supply air duct 13 that is the return air supply duct to the supply air duct 11 , when a temperature difference between a set temperature of the temperature adjustment coil 21 and the temperature of the air in the room detected by the return air temperature sensor 6 becomes smaller than or equal to a predetermined temperature difference threshold after the first switching control is executed.
  • the predetermined temperature difference threshold which is a threshold of the temperature difference between the set temperature of the temperature adjustment coil 21 and the temperature of the air in the room, allows the controller 31 to determine whether or not to execute the second switching control after executing the first switching control.
  • the first temperature threshold, the second temperature threshold, the third temperature threshold, the fourth temperature threshold, and the temperature difference threshold are stored in the controller 31 in advance.
  • the first temperature threshold, the second temperature threshold, the third temperature threshold, the fourth temperature threshold, and the temperature difference threshold can be set to arbitrary values by a user operating the remote control 32 .
  • the controller 31 is implemented as a processing circuit having a hardware configuration illustrated in FIG. 3 , for example.
  • FIG. 3 is a diagram illustrating an example of the hardware configuration of the processing circuit according to the first embodiment of the present invention.
  • the controller 31 is implemented by a processor 101 executing a program stored in a memory 102 .
  • a plurality of processors and a plurality of memories may cooperatively implement the above functions.
  • some of the functions of the controller 31 may be implemented as an electronic circuit, and the other functions may be implemented by using the processor 101 and the memory 102 .
  • the motor controller 23 may be implemented by the processor 101 executing a program stored in the memory 102 .
  • a plurality of processors and a plurality of memories may cooperatively implement the functions of the motor controller 23 .
  • some of the functions of the motor controller 23 may be implemented as an electronic circuit, and the other functions may be implemented by using the processor 101 and the memory 102 .
  • the remote control 32 has main functions including a function as an operation unit that accepts a setting operation, and a function as a communication unit that performs communication with the controller 31 to transmit and receive information.
  • the remote control 32 receives instructions on various controls such as the operation of the heat exchange ventilation system 100 .
  • the remote control 32 transmits, to the controller 31 , various instructions received from a user.
  • the remote control 32 transmits the selected set value to the controller 31 . That is, the first temperature threshold, the second temperature threshold, the third temperature threshold, the fourth temperature threshold, and the temperature difference threshold can be set to arbitrary values by the user operating the remote control 32 .
  • step S 10 the controller 31 determines whether or not the current operation of the temperature adjustment coil 21 is the heating operation.
  • step S 10 the controller 31 proceeds to step S 20 and determines whether or not the current outdoor air temperature detected by the outdoor air temperature sensor 5 is 0° C. or lower. In this case, 0° C. is the predetermined first temperature threshold.
  • step S 20 the controller 31 proceeds to step S 30 and determines whether or not the current indoor air temperature detected by the return air temperature sensor 6 , that is, the indoor temperature, is 10° C. or lower. In this case, 10° C. is the predetermined second temperature threshold.
  • step S 30 the controller 31 proceeds to step S 40 and transmits, to the first air duct switching damper 22 , the air duct switching signal for instructing switching of the air duct, thereby executing the first switching control for switching from the first air duct to the second air duct.
  • the first air duct switching damper 22 keeps its orientation changed so as to switch from the first air duct to the second air duct only during the transmission of the air duct switching signal.
  • step S 50 the controller 31 determines whether or not the temperature difference between the set temperature of the temperature adjustment coil 21 and the current indoor air temperature detected by the return air temperature sensor 6 is 3° C. or less, that is, whether or not “the set temperature of the temperature adjustment coil 21 ⁇ the current indoor temperature 3° C.”.
  • step S 50 If the temperature difference between the set temperature of the temperature adjustment coil 21 and the current indoor air temperature detected by the return air temperature sensor 6 is not 3° C. or less, that is, if “No” in step S 50 , the process returns to step S 40 .
  • step S 50 the controller 31 proceeds to step S 70 to stop the transmission of the air duct switching signal and execute the second switching control.
  • the execution of the second switching control switches from the second air duct to the first air duct, thereby ending the series of air duct switching operations.
  • step S 20 the controller 31 proceeds to step S 70 to stop the transmission of the air duct switching signal and execute the second switching control, thereby switching from the second air duct to the first air duct and ending the series of air duct switching operations.
  • step S 10 the controller 31 proceeds to step S 60 and determines whether or not the current operation of the temperature adjustment coil 21 is the cooling operation.
  • step S 60 the controller 31 proceeds to step S 80 and determines whether or not the current outdoor air temperature detected by the outdoor air temperature sensor 5 is 35° C. or higher. In this case, 35° C. is the predetermined third temperature threshold.
  • step S 80 the controller 31 proceeds to step S 90 and determines whether or not the current indoor air temperature detected by the return air temperature sensor 6 , that is, the indoor temperature, is 30° C. or higher. In this case, 30° C. is the predetermined fourth temperature threshold.
  • step S 90 the controller 31 proceeds to step S 100 and transmits the air duct switching signal to the first air duct switching damper 22 , thereby executing the first switching control for switching from the first air duct to the second air duct.
  • step S 110 the controller 31 determines whether or not the temperature difference between the set temperature of the temperature adjustment coil 21 and the current indoor air temperature detected by the return air temperature sensor 6 is 3° C. or less, that is, whether or not “the set temperature of the temperature adjustment coil 21 ⁇ the current indoor temperature 3° C.”.
  • step S 110 If the temperature difference between the set temperature of the temperature adjustment coil 21 and the current indoor air temperature detected by the return air temperature sensor 6 is not 3° C. or less, that is, if “No” in step S 110 , the process returns to step S 100 .
  • step S 80 the controller 31 proceeds to step S 70 to stop the transmission of the air duct switching signal and execute the second switching control, thereby switching from the second air duct to the first air duct and ending the series of air duct switching operations.
  • the controller 31 automatically executes the first switching control for placing the first air duct switching damper 22 in the position to switch from the supply air duct 11 to the return air supply duct when the temperature of the outdoor air detected by the outdoor air temperature sensor 5 and the temperature of the air in the room detected by the return air temperature sensor 6 satisfy a predetermined temperature condition during the heating operation mode of the temperature adjustment coil 21 or during the cooling operation mode of the temperature adjustment coil 21 .
  • the indoor air rather than the outdoor air can be taken into the heat exchange ventilation system 100 .
  • the temperature of the air supplied into the room can be adjusted rapidly, and the temperature of the room can be increased rapidly.
  • the heat exchange ventilation system 100 can rapidly heat the air supplied into the room as compared with the case where the outdoor air is taken into the heat exchange ventilation system 100 ; as a result, the temperature of the room can increase rapidly.
  • the heat exchange ventilation system 100 achieves indoor air conditioning by means of only the device having both a ventilation function and a temperature adjustment function.
  • the use of the heat exchange ventilation system 100 can reduce devices installed and materials such as the duct pipes, and also provide a comfortable indoor environment even in simplifying the air conditioning system for the purpose of reducing the power used.
  • FIG. 5 is a flowchart illustrating an example of the procedure of the air duct switching operation during operation of the heat exchange ventilation system 100 according to the second embodiment of the present invention.
  • the flowchart illustrated in FIG. 5 is different from the flowchart illustrated in FIG. 4 in that step S 210 is performed instead of step S 50 , and step S 220 is performed instead of step S 110 .
  • step S 210 the controller 31 determines whether or not 30 minutes have elapsed since the execution of the first switching control in step S 40 , that is, whether or not 30 minutes have elapsed since the transmission of the air duct switching signal started.
  • step S 210 If 30 minutes have not elapsed since the execution of the first switching control, that is, if “No” in step S 210 , the process returns to step S 40 and the first switching control continues. If 30 minutes have elapsed since the execution of the first switching control, that is, if “Yes” in step S 210 , the process proceeds to step S 70 .
  • step S 220 the controller 31 determines whether or not 30 minutes have elapsed since the execution of the first switching control in step S 100 , that is, whether or not 30 minutes have elapsed since the transmission of the air duct switching signal started.
  • step S 220 If 30 minutes have not elapsed since the execution of the first switching control, that is, if “No” in step S 220 , the process returns to step S 100 and the first switching control continues. If 30 minutes have elapsed since the execution of the first switching control, that is, if “Yes” in step S 220 , the process proceeds to step S 70 .
  • FIG. 6 is a flowchart illustrating an example of the procedure of the air duct switching operation during operation of the heat exchange ventilation system 100 according to the third embodiment of the present invention.
  • the flowchart illustrated in FIG. 6 is different from the flowchart illustrated in FIG. 4 in that step S 310 is performed instead of step S 20 and step S 30 , step S 320 is performed instead of step S 50 , step S 330 is performed instead of step S 80 and step S 90 , and step S 340 is performed instead of step S 110 .
  • step S 310 the controller 31 determines whether or not the current time is past 6 a.m. If the current time is not past 6 a.m., that is, if “No” in step S 310 , the process returns to step S 310 . If the current time is past 6 a.m., that is, if “Yes” in step S 310 , the process proceeds to step S 40 .
  • step S 320 the controller 31 determines whether or not the current time is past 8 a.m. If the current time is not past 8 a.m., that is, if “No” in step S 320 , the process returns to step S 40 . If the current time is past 8 a.m., that is, if “Yes” in step S 320 , the process proceeds to step S 70 .
  • step S 330 the controller 31 determines whether or not the current time is past 6 a.m. If the current time is not past 6 a.m., that is, if “No” in step S 330 , the process returns to step S 330 . If the current time is past 6 a.m., that is, if “Yes” in step S 330 , the process proceeds to step S 100 .
  • step S 340 the controller 31 determines whether or not the current time is past 8 a.m. If the current time is not past 8 a.m., that is, if “No” in step S 340 , the process returns to step S 100 . If the current time is past 8 a.m., that is, if “Yes” in step S 340 , the process proceeds to step S 70 .
  • the controller 31 automatically executes the first switching control and the second switching control on the basis of the current time to thereby switch the air duct.
  • Such air duct control is suitable for application in places such as offices and schools where the heat exchange ventilation system 100 is used at a fixed time every day.
  • the above air duct control enables the heat exchange ventilation system 100 to change in role from the ventilator to the indoor air conditioner in accordance with a user's request such as in the early morning where the need for ventilation of the room is low, but the need for temperature adjustment is high.
  • the above air duct control allows the single heat exchange ventilation system 100 to play two roles: the role of the ventilator; and the role of the indoor air conditioner, which is useful especially when no other indoor air conditioner is disposed in the room.
  • FIG. 7 is a flowchart illustrating an example of the procedure of the air duct switching operation during operation of the heat exchange ventilation system 100 according to the fourth embodiment of the present invention.
  • the flowchart illustrated in FIG. 7 is different from the flowchart illustrated in FIG. 4 in that step S 410 , step S 420 , and step S 430 are performed.
  • step S 410 after executing the first switching control in step S 40 , the controller 31 performs control for increasing the air volume of the supply blower 3 to the maximum notch, providing the air volume larger than that before the execution of the first switching control.
  • step S 430 after executing the first switching control in step S 100 , the controller 31 performs control for increasing the air volume of the supply blower 3 to the maximum notch, providing the air volume larger than that before the execution of the first switching control.
  • step S 420 the controller 31 controls the air volume of the supply blower 3 such that the air volume having increased in steps S 410 and S 430 is restored to that before the execution of the first switching control.
  • Performing the control indicated in the flowchart described above makes it possible to automatically increase the air volume of the supply blower 3 after the execution of the first switching control such that the air volume becomes larger than that before the execution of the first switching control. As a result, the temperature of the indoor air can be adjusted more rapidly.
  • FIG. 8 is a flowchart illustrating an example of the procedure of the air duct switching operation during operation of the heat exchange ventilation system 100 according to the fifth embodiment of the present invention. The flowchart illustrated in FIG. 8 is different from the flowchart illustrated in FIG. 4 in that step S 510 , step S 520 , and step S 530 are performed.
  • step S 510 and step S 530 after executing the first switching control in step S 40 and step S 100 , the controller 31 switches to and executes, in accordance with air volume instruction information transmitted from the remote control 32 , any of: the control for stopping the exhaust blower 4 ; the control for causing the exhaust blower 4 to provide a smaller air volume than that before the execution of the first switching control; and the control for causing the exhaust blower 4 to maintain the same air volume as that before the execution of the first switching control.
  • the control of the air volume of the exhaust blower 4 can be changed at an arbitrary timing.
  • step S 520 the controller 31 controls the air volume of the exhaust blower 4 such that the air volume changed in steps S 510 and S 530 is restored to that before the execution of the first switching control.
  • Performing the control indicated in the flow described above makes it possible to change the air volume of the exhaust blower 4 to an arbitrary air volume after the execution of the first switching control so that, when the air volume is to be decreased, the temperature of the indoor air can be adjusted more rapidly.
  • the controller 31 can execute predetermined control of the air volume of the exhaust blower 4 , the predetermined control being set in the controller 31 and any one of: the control for stopping the exhaust blower 4 ; the control for causing the exhaust blower to provide a smaller air volume than that before the execution of the first switching control; and the control for causing the exhaust blower to maintain the same air volume as that before the execution of the first switching control.
  • Performing the above control makes it possible to change the air volume of the exhaust blower 4 to an arbitrary air volume after the execution of the first switching control so that, when the air volume is to be decreased, the temperature of the indoor air can be adjusted more rapidly.
  • FIG. 9 is a schematic diagram illustrating a simplified configuration of a heat exchange ventilation system 200 according to a sixth embodiment of the present invention.
  • the heat exchange ventilation system 200 according to the sixth embodiment of the present invention is different from the heat exchange ventilation system 100 in that a temperature adjustment coil 25 is incorporated in the heat exchange ventilator 1 and disposed downstream of the heat exchange element 2 .
  • the control illustrated in the first to fifth embodiments described above can be executed so that the effect similar to that of the heat exchange ventilation system 100 can be obtained. Moreover, since the temperature adjustment coil 25 is incorporated in the heat exchange ventilator 1 in advance, the duct pipe forming the downstream supply air duct 11 c is easy to dispose.
  • FIG. 10 is a schematic diagram illustrating a simplified configuration of a heat exchange ventilation system 300 according to a seventh embodiment of the present invention.
  • the heat exchange ventilation system 300 according to the seventh embodiment of the present invention is different from the heat exchange ventilation system 100 in that a second air duct switching damper 26 is provided at a part of the partition wall 8 , instead of the first air duct switching damper 22 .
  • the second air duct switching damper 26 is an air duct switching damper that switches between the supply air duct which is the air duct for taking in the outdoor air, and the return air supply duct for returning the air in the room to a portion of the supply air duct located upstream of the temperature adjustment coil.
  • a bypass opening 8 a Formed through the partition wall 8 is a bypass opening 8 a through which a region located upstream of the supply blower 3 in the post-heat-exchange outdoor air duct 11 bb communicates with the pre-heat-exchange indoor air duct 12 ba .
  • the second air duct switching damper 26 which is an opening/closing part for opening and closing the bypass opening 8 a , is disposed in the post-heat-exchange outdoor air duct 11 bb .
  • the bypass opening 8 a is provided between the post-heat-exchange outdoor air duct 11 bb and the pre-heat-exchange indoor air duct 12 ba for the purpose of allowing at least part of the exhaust air flow flowing through the pre-heat-exchange indoor air duct 12 ba to flow into the post-heat-exchange outdoor air duct 11 bb.
  • the pre-heat-exchange indoor air duct 12 ba communicates with the post-heat-exchange outdoor air duct 11 bb via the bypass opening 8 a , and at the same time a region of the post-heat exchange outdoor air duct 11 bb located adjacent the heat exchange element 2 is closed, that is, the post-heat-exchange outdoor air duct 11 bb is blocked between the heat exchange element 2 and the supply blower 3 .
  • a bypass flow of the exhaust air flow passing from the pre-heat exchange indoor air duct 12 ba through the bypass opening 8 a flows into the post-heat exchange outdoor air duct 11 bb .
  • the airflow on the upstream side of the second air duct switching damper 26 in the supply air duct 11 is not directed downstream of the second air duct switching damper 26 .
  • the second air duct switching damper 26 is an air duct switching damper disposed downstream of the heat exchange element in the supply air duct inside the heat exchange ventilator.
  • the second air duct switching damper 26 switches between a third air duct and a fourth air duct.
  • the third air duct is an air duct for taking in the outdoor air as the second air duct switching damper 26 separates a part of the internal supply air duct located downstream of the heat exchange element from a part of the exhaust air duct located upstream of the heat exchange element inside the heat exchange ventilator so as to open the part of the supply air duct located downstream of the heat exchange element inside the heat exchange ventilator.
  • the fourth air duct is an air duct for allowing the part of the supply air duct located downstream of the heat exchange element inside the heat exchange ventilator to communicate with the part of the exhaust air duct located upstream of the heat exchange element inside the heat exchange ventilator so as to circulate the indoor air as the second air duct switching damper 26 closes a part of the supply air duct located downstream of the heat exchange element inside the heat exchange ventilator.
  • the fourth air duct is the return air supply duct.
  • the heat exchange ventilation system 300 including the second air duct switching damper 26 instead of the first air duct switching damper 22 as described above can obtain the effect similar to that of the heat exchange ventilation system 100 .
  • the technique illustrated in the first to sixth embodiments described above can be applied to the heat exchange ventilation system 300 .
  • a bypass flow in the heat exchange ventilation system 300 does not pass through the heat exchange element 2 , the bypass flow is not the outdoor air but the indoor air that can be rapidly heated when the air is supplied into the room as compared with taking the outdoor air into the heat exchange ventilation system 300 ; thus, the temperature of the room can increase rapidly.
  • 1 heat exchange ventilator 1 a outdoor air inlet; 1 b supply air outlet; 1 c indoor air inlet; 1 d exhaust air outlet; 1 e casing; 2 heat exchange element; 3 supply blower; 4 exhaust blower; 5 outdoor air temperature sensor; 6 return air temperature sensor; 7 , 8 partition wall; 8 a bypass opening; 11 supply air duct; 11 a upstream supply air duct; 11 b internal supply air duct; 11 ba pre-heat exchange outdoor air duct; 11 bb post-heat exchange outdoor air duct; 11 bc heat exchange element supply air duct; 11 c downstream supply air duct; 12 exhaust air duct; 12 a upstream exhaust air duct; 12 b internal exhaust air duct; 12 ba pre-heat exchange indoor air duct; 12 bb post-heat exchange indoor air duct; 12 bc heat exchange element exhaust air duct; 12 c downstream exhaust air duct; 13 branch supply air duct; 21 , 25 temperature adjustment coil; 22 first air duct switching damper; 23 motor controller; 24

Landscapes

  • 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)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)
  • Ventilation (AREA)
US16/636,951 2017-09-22 2017-09-22 Heat exchange ventilation system Abandoned US20200378645A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/034337 WO2019058517A1 (ja) 2017-09-22 2017-09-22 熱交換型換気システム

Publications (1)

Publication Number Publication Date
US20200378645A1 true US20200378645A1 (en) 2020-12-03

Family

ID=65809583

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/636,951 Abandoned US20200378645A1 (en) 2017-09-22 2017-09-22 Heat exchange ventilation system

Country Status (5)

Country Link
US (1) US20200378645A1 (ja)
EP (1) EP3686501B1 (ja)
JP (1) JP6833050B2 (ja)
CN (1) CN111094860A (ja)
WO (1) WO2019058517A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11268728B2 (en) * 2018-07-11 2022-03-08 Daikin Industries, Ltd. Ventilation system
US11384953B2 (en) * 2019-05-10 2022-07-12 Daikin Industries, Ltd. Air conditioning system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4036486A1 (en) * 2021-01-29 2022-08-03 Daikin Industries, Ltd. Integrated hvac system for a building
CN114234308B (zh) * 2021-11-19 2023-04-07 广东伊斐净化科技有限公司 一种冷热补偿分体式全热交换新风空调系统及其控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050087616A1 (en) * 2003-10-17 2005-04-28 Attridge Russell G. Thermal balance temperature control system
US20060130502A1 (en) * 2004-12-16 2006-06-22 Wruck Richard A Virtual controller for mixed air low temperature protection of HVAC systems
US10443882B2 (en) * 2014-05-14 2019-10-15 Mitsubishi Electric Corporation Outside-air processing device and air-conditioning apparatus

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047890A1 (de) * 1980-12-19 1982-07-29 Philips Patentverwaltung Gmbh, 2000 Hamburg "vorrichtung zum belueften und heizen von innenraeumen"
US4384850A (en) * 1981-06-17 1983-05-24 Tri-Mark Metal Corporation Recirculating air heater
JPH0842893A (ja) 1994-07-29 1996-02-16 Daikin Ind Ltd 全熱交換換気装置
DE10010832C1 (de) * 2000-03-09 2001-11-22 Krantz Tkt Gmbh Vorrichtung zur Temperierung und/oder Belüftung eines Raumes
JP4796234B2 (ja) * 2000-04-19 2011-10-19 株式会社ハーマン 換気装置
JP4656357B2 (ja) * 2001-01-12 2011-03-23 ダイキン工業株式会社 空気調和装置
JP4736305B2 (ja) * 2001-03-30 2011-07-27 ダイキン工業株式会社 換気装置および換気装置の製造方法
JP2005164113A (ja) * 2003-12-02 2005-06-23 Max Co Ltd 換気装置
JP4042688B2 (ja) * 2003-12-16 2008-02-06 マックス株式会社 浴室空調装置
JP4565936B2 (ja) * 2004-09-03 2010-10-20 三洋電機株式会社 空気調和装置
JP2006292300A (ja) * 2005-04-12 2006-10-26 Hiromi Komine 外気導入型空調機及び空調システム
WO2007069349A1 (ja) * 2005-12-14 2007-06-21 Matsushita Electric Industrial Co., Ltd. 熱交換形換気装置
JP5061642B2 (ja) * 2007-02-23 2012-10-31 ダイキン工業株式会社 空調換気装置
KR100907603B1 (ko) * 2007-11-09 2009-07-14 지에스칼텍스 주식회사 천장형 공기조화기 및 에너지 절감형 공조시스템
JP2011052904A (ja) * 2009-09-02 2011-03-17 Sharp Corp 換気システム
WO2015079673A1 (ja) * 2013-11-26 2015-06-04 パナソニックＩｐマネジメント株式会社 給排型換気装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050087616A1 (en) * 2003-10-17 2005-04-28 Attridge Russell G. Thermal balance temperature control system
US20060130502A1 (en) * 2004-12-16 2006-06-22 Wruck Richard A Virtual controller for mixed air low temperature protection of HVAC systems
US10443882B2 (en) * 2014-05-14 2019-10-15 Mitsubishi Electric Corporation Outside-air processing device and air-conditioning apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11268728B2 (en) * 2018-07-11 2022-03-08 Daikin Industries, Ltd. Ventilation system
US11703245B2 (en) 2018-07-11 2023-07-18 Daikin Industries, Ltd. Ventilation system
US11384953B2 (en) * 2019-05-10 2022-07-12 Daikin Industries, Ltd. Air conditioning system

Also Published As

Publication number Publication date
CN111094860A (zh) 2020-05-01
EP3686501A1 (en) 2020-07-29
JP6833050B2 (ja) 2021-02-24
EP3686501A4 (en) 2020-08-26
WO2019058517A1 (ja) 2019-03-28
EP3686501B1 (en) 2023-03-01
JPWO2019058517A1 (ja) 2019-12-19

Similar Documents

Publication Publication Date Title
US10928093B2 (en) Heat exchange ventilator
US20180119981A1 (en) Integrated ventilation unit
US20200378645A1 (en) Heat exchange ventilation system
JP6800333B2 (ja) 空気調和機及び空気調和システム
US10443882B2 (en) Outside-air processing device and air-conditioning apparatus
CN111630324A (zh) 空调系统及换气装置
JPH11294839A (ja) 全館空調換気システム
JP2007132537A (ja) 空調制御システム
CN112880148B (zh) 用于空调的控制方法、装置、电子设备及存储介质
CN107504629B (zh) 一种多联式空调干衣机及其控制方法
JP2000304326A (ja) 熱交換換気装置
JP7251086B2 (ja) 空調システム
US6694769B2 (en) Ventilation and air heating treatment installation in a building comprising several housing units
WO2020201820A1 (en) Controlled mechanical ventilation system with air mixing unit
JP2002031384A (ja) 熱交換換気装置
JPH03164647A (ja) 空気調和機
JP2017219293A (ja) 換気システム
JPH10238803A (ja) 冷暖房装置
JP2020016374A (ja) 空調システム
JPH0682119A (ja) 空気調和機
JPH11248233A (ja) 加湿機能付き空気調和機

Legal Events

Date Code Title Description
AS Assignment

Owner name: MITSUBISHI ELECTRIC CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DOI, ATSUO;REEL/FRAME:051736/0944

Effective date: 20191225

STPP Information on status: patent application and granting procedure in general

Free format text: APPLICATION DISPATCHED FROM PREEXAM, NOT YET DOCKETED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION