WO2011083517A1 - Radiateur - Google Patents

Radiateur Download PDF

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Publication number
WO2011083517A1
WO2011083517A1 PCT/JP2010/000096 JP2010000096W WO2011083517A1 WO 2011083517 A1 WO2011083517 A1 WO 2011083517A1 JP 2010000096 W JP2010000096 W JP 2010000096W WO 2011083517 A1 WO2011083517 A1 WO 2011083517A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
temperature
pipe
state
way valve
Prior art date
Application number
PCT/JP2010/000096
Other languages
English (en)
Japanese (ja)
Inventor
中井明紀
望月克己
Original Assignee
ダイキン工業株式会社
ダイキン ヨーロッパ エヌ．ヴイ．
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 ダイキン工業株式会社, ダイキン ヨーロッパ エヌ．ヴイ． filed Critical ダイキン工業株式会社
Priority to EP10784940.8A priority Critical patent/EP2363659B1/fr
Priority to PCT/JP2010/000096 priority patent/WO2011083517A1/fr
Publication of WO2011083517A1 publication Critical patent/WO2011083517A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • 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
    • 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
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Definitions

  • the present invention relates to a radiator that cools air by drawing in cold water from a heat source machine.
  • Patent Document 1 Japanese Patent Laid-Open No. 2002-983464 discloses a radiator having a heat exchange coil (corresponding to a heat exchanger) and a blower fan. In this air conditioning system, cooling is performed by supplying cold water to a heat exchange coil (corresponding to a heat exchanger).
  • a radiator is a radiator that draws in cold water from a heat source unit and cools an indoor space, and includes a heat exchanger, a first pipe, a flow rate adjustment mechanism, a heat exchanger temperature detection unit, and a control A section.
  • the first pipe cold water flows from the heat source machine side to the heat exchanger side.
  • the flow rate adjusting mechanism adjusts the flow rate of the cold water flowing in the heat exchanger.
  • the heat exchanger temperature detector can detect the temperature of the heat exchanger.
  • the control unit performs first cooling control for controlling the flow rate adjusting mechanism so that the temperature of the heat exchanger detected by the heat exchanger temperature detection unit is equal to or higher than the dew point temperature of the air in the indoor space.
  • the first cooling control is executed by the control unit. For this reason, when 1st cooling control is performed, the possibility that the temperature of a heat exchanger may become lower than the dew point temperature of the air in indoor space at the time of air conditioning of indoor space can be reduced. This can reduce the risk of condensation on the heat exchanger.
  • a radiator according to a second aspect of the present invention is the radiator according to the first aspect of the present invention, and the flow rate adjusting mechanism can take a cut-off state in which the flow of cold water from the heat source unit side toward the heat exchanger side is cut off.
  • the control unit shuts off the flow rate adjustment mechanism when the temperature of the heat exchanger detected by the heat exchanger temperature detection unit is lower than the dew point temperature of the air in the indoor space. Switch to. For this reason, when the temperature of the heat exchanger is lower than the dew point temperature of air in the indoor space, the flow of cold water from the heat source device toward the heat exchanger can be blocked. Therefore, the possibility that the temperature of the heat exchanger is further lowered can be reduced by continuing the flow of cold water into the heat exchanger. This can reduce the risk of condensation on the heat exchanger.
  • the radiator which concerns on 3rd invention is a radiator of 2nd invention, Comprising: 2nd piping and bypass piping are further provided.
  • Water flowing from the heat exchanger side to the heat source machine side flows through the second pipe.
  • the bypass pipe bypasses the water from the first pipe to the second pipe without passing through the heat exchanger.
  • the flow rate adjusting mechanism is in the cut-off state
  • the temperature of the heat exchanger is lower than the dew point temperature of the air in the indoor space
  • the cold water flowing through the first pipe can be diverted to the second pipe via the bypass pipe.
  • a possibility that cold water may flow into a heat exchanger can be reduced.
  • a radiator according to a fourth aspect of the present invention is the radiator according to any one of the first to third aspects of the present invention, and further includes an indoor temperature detector that can detect the temperature of air in the indoor space.
  • the control unit calculates the dew point temperature of the air in the indoor space based on the temperature of the air detected by the indoor temperature detection unit. For this reason, the dew point temperature of the air in the indoor space can be calculated based on the temperature of the air in the indoor space.
  • a radiator according to a fifth aspect of the present invention is the radiator according to any one of the first to fourth aspects of the present invention, further comprising a setting unit that allows a user to set whether or not to execute the first cooling control by the control unit during cooling. Prepare. Therefore, the user can set whether or not to execute the first cooling control during cooling. Thereby, the indoor space can be cooled according to the convenience of the user.
  • the possibility of dew condensation occurring in the heat exchanger can be reduced.
  • the radiator according to the second aspect of the invention it is possible to reduce the possibility that condensation occurs in the heat exchanger.
  • the radiator according to the third aspect of the present invention when the temperature of the heat exchanger is lower than the dew point temperature of air in the indoor space, it is possible to reduce the possibility that cold water flows into the heat exchanger.
  • the dew point temperature of the air in the indoor space can be calculated based on the temperature of the air in the indoor space.
  • the indoor space can be cooled according to the convenience of the user.
  • 1 is an external perspective view of a radiator according to an embodiment of the present invention.
  • the control block diagram of the control part which a radiator has. The figure which shows the relationship between the state of a three-way valve, and a predetermined range.
  • the flowchart which shows the control operation of a heat exchanger temperature determination part.
  • the schematic diagram of the heat exchanger and radiator piping which the radiator concerning a modification (A) has.
  • the air conditioning system 1 includes a heat source device 10, a circulation pump 11, a first header 12, a second header 13, and a plurality of (two in this embodiment) radiators 50, 50.
  • the heat source device 10, the circulation pump 11, the first header 12, the second header 13, and the radiators 50 and 50 are connected by piping to constitute a water circulation circuit.
  • the heat source device 10 generates cold water (hereinafter referred to as cold water) or warm water (hereinafter referred to as hot water) by exchanging heat between the refrigerant and the water.
  • the temperature of cold water or hot water created in the heat source device 10 is set by a setting unit (not shown) provided in the heat source device 10. For this reason, the heat source device 10 exchanges heat between the refrigerant and water so as to approach the set temperature.
  • the circulation pump 11 circulates water in the water circulation circuit.
  • the radiators 50 and 50 are installed in the indoor spaces 50a and 50b, respectively, and air-condition the indoor spaces 50a and 50b. Further, the two radiators 50 and 50 are connected in parallel to each other via the first header 12 and the second header 13. The configuration of the radiators 50 and 50 will be described in detail later.
  • the water circulation circuit has a first inflow side pipe 2, a second inflow side pipe 3, a third inflow side pipe 4, a radiator pipe 5, a first outflow side pipe 6, and a second outflow side pipe 7. is doing.
  • the first inflow side pipe 2 connects the heat source device 10 and the circulation pump 11.
  • the second inflow side pipe 3 connects the circulation pump 11 and the first header 12.
  • the third inflow side pipe 4 connects the first header 12 and the radiators 50, 50.
  • the radiator pipe 5 is a pipe disposed in the radiators 50 and 50.
  • the radiator pipe 5 will be described later.
  • the first outflow side pipe 6 connects the radiators 50 and 50 and the second header 13.
  • the second outflow side pipe 7 connects the second header 13 and the heat source unit 10.
  • the radiators 50 and 50 are small indoor units that can be placed on the floor.
  • the radiators 50 and 50 cool the indoor spaces 50 a and 50 b by drawing in the cold water generated in the heat source unit 10, and draw in the hot water generated in the heat source unit 10.
  • the indoor spaces 50a and 50b are heated.
  • the radiator 50 installed in the indoor space 50a and the radiator 50 installed in the indoor space 50b have the same configuration.
  • the radiator 50 of the present embodiment is a small indoor unit that can be placed on the floor, but the form of the indoor unit is not limited to this.
  • the radiator is a wall-mounted indoor unit or a ceiling cassette type indoor unit. May be. As shown in FIGS.
  • the radiator 50 includes a casing 51, a heat exchanger 52, a fan 53, a three-way valve 54, an indoor temperature detector 55, and a heat exchanger temperature detector 56.
  • the radiator 50 includes the heat exchanger 52 and the fan 53.
  • the present invention is not limited to this.
  • the radiator includes the heat exchanger but includes the fan. It may not be.
  • the radiator pipe 5 includes a first pipe 5a, a second pipe 5b, a third pipe 5c, a fourth pipe 5d, and a bypass pipe 5e.
  • One end of the first pipe 5a is connected to the third inflow side pipe 4 via a connection port (not shown), and the other end of the first pipe 5a is connected to the three-way valve 54.
  • One end of the second pipe 5 b is connected to the three-way valve 54, and the other end of the second pipe 5 b is connected to the heat exchanger 52.
  • the third pipe 5c is connected to the heat exchanger 52, and the other end of the third pipe 5c is connected to the fourth pipe 5d.
  • the fourth pipe 5d has one end connected to the third pipe 5c, and the other end connected to the first outflow pipe 6 via a connection port (not shown).
  • One end of the bypass pipe 5e is connected to the three-way valve 54, and the other end of the bypass pipe 5e is connected to a connection part 5f between the third pipe 5c and the fourth pipe 5d.
  • the casing 51 includes a bottom frame 51a, a front grill 51b, and a front panel 51c.
  • the bottom frame 51a has a substantially rectangular shape.
  • the front grill 51b is attached to the front side of the bottom frame 51a.
  • an opening (not shown) is formed on the front surface of the front grill 51b.
  • the front panel 51c is attached to the front side of the front grill 51b so as to cover the opening formed in the front grill 51b.
  • a first outlet 51ba is formed in the upper part of the front grill 51b.
  • a second outlet 51bb is formed in the lower portion of the front grill 51b.
  • a flap 51d capable of covering the first blowing port 51ba is disposed in the vicinity of the first blowing port 51ba.
  • a first suction port 51ca is formed in the upper part of the front panel 51c.
  • a second suction port 51cb is formed in the lower portion of the front panel 51c.
  • Third suction ports 51cc and 51cd are formed on the left and right side surfaces of the front panel 51c.
  • the heat exchanger 52 has a heat transfer tube that is bent back and forth at both ends in the longitudinal direction, and a plurality of fins that are inserted through the heat transfer tube. One end of the heat transfer tube is connected to the second pipe 5b, and the other end of the heat transfer tube is connected to the third pipe 5c. For this reason, in the heat exchanger 52, when cold water or warm water is sent from the heat source device 10 by the circulation pump 11, heat exchange is performed between the cold water or warm water flowing in the heat transfer pipe and the room air.
  • the fan 53 is a turbo fan that sucks air from the front side (front side) and blows it out in the centrifugal direction.
  • the fan 53 is disposed on the rear side (back side) of the bell mouth (not shown), and is sucked from the first suction port 51ca, the second suction port 51cb, and the third suction ports 51cc and 51cd, and is used as a heat exchanger. 52 and the bell mouth, and the flow of the air blown out from the first blowout port 51ba and the second blowout port 51bb is generated.
  • the three-way valve 54 can take a first state in which the first pipe 5a and the second pipe 5b are connected, and a second state (corresponding to a cut-off state) in which the first pipe 5a and the bypass pipe 5e are connected. . For this reason, when the three-way valve 54 takes the first state, the flow of water from the first pipe 5a to the second pipe 5b is allowed. Therefore, when the three-way valve 54 takes the first state, the flow of water from the heat source unit 10 toward the heat exchanger 52 is allowed. When the three-way valve 54 is in the first state, the flow of water from the first pipe 5a to the bypass pipe 5e (water flow in the direction of the broken line arrow in FIG. 1) is completely blocked.
  • the three-way valve 54 takes the first state, the water flowing through the third inflow side piping 4 flows into the heat exchanger 52 via the first piping 5a and the second piping 5b. And the water which flowed into the heat exchanger 52 flows into the 1st outflow side piping 6 via the 3rd piping 5c and the 4th piping 5d. Further, when the three-way valve 54 takes the second state, the flow of water from the heat source unit 10 toward the heat exchanger 52 is completely blocked.
  • the three-way valve 54 takes the second state, the flow of water from the first pipe 5a to the second pipe 5b is completely blocked, and the flow of water from the first pipe 5a to the bypass pipe 5e ( The flow of water in the direction of the dashed arrow in FIG. 1 is allowed. Therefore, when the three-way valve 54 takes the second state, the water flowing through the third inflow side pipe 4 flows from the first pipe 5a to the fourth pipe 5d via the bypass pipe 5e, and then the first outflow. It flows to the side pipe 6. Thereby, when the three-way valve 54 takes the second state, the water flowing from the heat source device 10 flows toward the heat source device 10 without flowing into the heat exchanger 52.
  • the indoor temperature detector 55 detects the temperature of air in the indoor spaces 50a and 50b in which the radiator 50 is installed.
  • the indoor temperature detection unit 55 is disposed in the casing 51 and in the vicinity of the third suction port 51cc.
  • the room temperature information detected by the room temperature detection unit 55 is transmitted to the control unit 60 described later as needed.
  • the heat exchanger temperature detection unit 56 detects the temperature of the heat exchanger 52. Further, the heat exchanger temperature detection unit 56 is disposed in the vicinity of the heat exchanger 52. In addition, the temperature information of the heat exchanger 52 detected by the heat exchanger temperature detecting unit 56 is transmitted to the control unit 60 described later as needed.
  • the radiator 50 also has a control unit 60 that controls the three-way valve 54. Below, the control part 60 is demonstrated.
  • the controller 60 is connected to the three-way valve 54 of the radiator 50, and controls the three-way valve 54 so that the indoor spaces 50a and 50b are cooled or heated. Further, as shown in FIG. 1, one radiator 50 has one control unit 60.
  • the control unit 60 can receive various commands transmitted from the user via the wireless remote controller 80.
  • the various commands include an operation setting command, a set temperature command, and an air volume setting command.
  • the operation setting command includes a cooling setting command for cooling the indoor spaces 50a and 50b and a heating setting command for heating the indoor spaces 50a and 50b.
  • the remote controller 80 includes an operation setting unit 81 for transmitting an operation setting command to the control unit 60, a temperature setting unit 82 for transmitting a set temperature command to the control unit 60, and an air volume setting command. And an air volume setting unit 83 for transmitting to.
  • the user can transmit various commands to the control unit 60 by operating the operation setting unit 81, the temperature setting unit 82, and the air volume setting unit 83.
  • the control unit 60 also includes a cooling operation control unit 61 that controls the three-way valve 54 when a cooling setting command is transmitted via the remote controller 80.
  • the cooling operation control unit 61 performs the first cooling control and the second cooling control when the indoor spaces 50a and 50b are cooled, that is, when the radiator 50 is allowed to perform the cooling operation.
  • the cooling operation control unit 61 executes the first cooling control
  • the heat exchanger temperature detected by the heat exchanger temperature detection unit 56 does not become lower than the dew point temperature of the air in the indoor spaces 50a and 50b.
  • the state of the three-way valve 54 is switched to the first state or the second state.
  • the cooling operation control unit 61 switches the state of the three-way valve 54 to the first state when executing the second cooling control.
  • the cooling operation control unit 61 does not switch the state of the three-way valve 54 from the first state to the second state when executing the second cooling control.
  • the heat exchanger temperature detected by the heat exchanger temperature detecting unit 56 is the dew point of the air in the indoor spaces 50a and 50b. Even when the temperature becomes lower than the temperature, the state of the three-way valve 54 cannot be switched to the second state.
  • the cooling operation control unit 61 includes a jumper 69, a determination unit 63, and an operation unit 64.
  • the jumper 69 is used to set whether to perform the first cooling control or the second cooling control when the indoor spaces 50a and 50b are cooled.
  • the cooling operation control unit 61 determines that execution of the first cooling control is permitted.
  • the cooling operation control unit 61 determines that execution of the second cooling control is permitted. For this reason, the cooling operation control unit 61 determines whether to perform the first cooling control or the second cooling control when the indoor spaces 50a and 50b are cooled, depending on the cut state of the jumper 69.
  • the determination unit 63 includes a capacity supply determination unit 65, a dew point temperature calculation unit 62, and a heat exchanger temperature determination unit 66.
  • the capacity supply determination unit 65 determines whether or not capacity supply is necessary for the heat exchanger 52. Specifically, the capacity supply determination unit 65 is obtained from the set temperature value obtained from the set temperature information based on the set temperature command transmitted from the remote controller 80 and the room temperature information transmitted from the room temperature detection unit 55. It is determined whether or not it is necessary to flow cold water or hot water through the heat exchanger 52 by comparing the room temperature value. More specifically, when the set temperature value and the room temperature value are different from each other by a first predetermined value (for example, a value corresponding to 1 ° C. as a temperature), it is determined that the capability supply is necessary.
  • a first predetermined value for example, a value corresponding to 1 ° C. as a temperature
  • the capability supply determination unit 65 determines that the capability supply is not necessary when the difference between the set temperature value and the room temperature value is less than the first predetermined value. Furthermore, when the capability supply determination unit 65 determines that capability supply is necessary, the capability supply determination unit 65 transmits capability supply necessity information (hereinafter referred to as request information) to the operation unit 64. When the capability supply determination unit 65 determines that the capability supply is not necessary, the capability supply determination unit 65 transmits capability supply unnecessary information (hereinafter referred to as non-request information) to the operation unit 64.
  • request information capability supply necessity information
  • non-request information capability supply unnecessary information
  • the correction value B is determined according to the environmental conditions in the area where the radiator 50 is installed. The presence or absence of the correction value B can be switched by the user operating a slide switch or the like. For example, when the correction value B is set to “none” and the room temperature is 20 ° C. in an area where the relative humidity is 60%, the dew point temperature calculation unit 62 sets the predetermined value A to 0. .6, the room temperature value is 20, and the threshold value X is calculated.
  • the heat exchanger temperature determination unit 66 has a heat exchanger temperature value obtained from the heat exchanger temperature information transmitted from the heat exchanger temperature detection unit 56 within a predetermined range. Whether or not the heat exchanger temperature is determined.
  • the predetermined range is an area that is equal to or greater than the threshold value X calculated by the dew point temperature calculation unit 62.
  • the heat exchanger temperature determination unit 66 determines that the heat exchanger temperature value is within the predetermined range, that is, the temperature of the heat exchanger 52 is equal to or higher than the dew point temperature of the air in the indoor spaces 50a and 50b. If it is determined, it is determined that further cold water can be supplied to the heat exchanger 52, and supplyable information is transmitted to the operation unit 64.
  • the heat exchanger temperature determination unit 66 determines that the heat exchanger temperature value is not within the predetermined range, that is, the temperature of the heat exchanger 52 is higher than the dew point temperature of the air in the indoor spaces 50a and 50b. When it is determined that the temperature is low, it is determined that the cold water cannot be further supplied to the heat exchanger 52, and the supply impossible information is transmitted to the operation unit 64.
  • the predetermined range includes a first range and a second range as shown in FIG.
  • the first range is a region from a value X + C that is larger than the threshold value X by a predetermined value C to the threshold value X.
  • the second range is a region that is equal to or greater than a value X + C that is larger than the threshold value X by a predetermined value C.
  • the heat exchanger temperature determination unit 66 determines whether the heat exchanger temperature value is within the predetermined range according to the state of the three-way valve 54. For example, when it is determined that the heat exchanger temperature value is within the first range and the supplyable information is transmitted to the operation unit 64 in the previous heat exchanger temperature determination, the heat exchanger temperature determination unit 66 determines that the heat exchanger temperature value is within a predetermined range.
  • the heat exchanger temperature determination The unit 66 determines that the heat exchanger temperature value is not within the predetermined range.
  • the operation unit 64 switches the state of the three-way valve 54 by transmitting an energization signal or a non-energization signal to the three-way valve 54. Specifically, the operation unit 64 switches the state of the three-way valve 54 to the first state by transmitting an energization signal to the three-way valve 54. In addition, the operation unit 64 switches the state of the three-way valve 54 to the second state by transmitting a non-energization signal to the three-way valve 54. Further, when the request information is transmitted from the capability supply determination unit 65, the operation unit 64 transmits an energization signal to the three-way valve 54.
  • the operation unit 64 transmits a non-energization signal to the three-way valve 54. Further, the operation unit 64 transmits an energization signal to the three-way valve 54 when the supplyable information is transmitted from the heat exchanger temperature determination unit 66 after the request information is transmitted from the capacity supply determination unit 65. In addition, the operation unit 64 transmits a de-energization signal to the three-way valve 54 when the supply impossible information is transmitted from the heat exchanger temperature determination unit 66 after the request information is transmitted from the capacity supply determination unit 65. To do.
  • the operation unit 64 When the supply impossible information is transmitted from the heat exchanger temperature determination unit 66, the operation unit 64 has a capability supply determination unit 65 until the first predetermined time elapses after the supply impossible information is transmitted. Ignore request information sent from. For this reason, when the supply impossible information is transmitted from the heat exchanger temperature determination unit 66, the operation unit 64 supplies the three-way valve 54 until the first predetermined time elapses after the supply impossible information is transmitted. Do not send the energization signal.
  • the three-way valve 54 takes the first state. Further, when the first cooling control is executed during the cooling of the indoor spaces 50a and 50b, when the capability supply determination unit 65 determines that the capability supply is not necessary, or the capability supply determination unit 65 If it is determined that the capacity supply is necessary and the heat exchanger temperature determination unit 66 determines that the heat exchanger temperature value is not within the predetermined range, the three-way valve 54 takes the second state. .
  • the three-way valve 54 when the second cooling control is performed when the indoor spaces 50a and 50b are being cooled, the heat exchanger temperature determination in the heat exchanger temperature determination unit 66 is not performed, and thus the capacity supply determination unit 65 When it is determined that the capability supply is necessary, the three-way valve 54 always takes the first state. In addition, when the second cooling control is performed when the indoor spaces 50a and 50b are being cooled, the heat exchanger temperature determination in the heat exchanger temperature determination unit 66 is not performed, and thus the capacity supply determination unit 65 The three-way valve 54 takes the second state only when it is determined that the capability supply is not required. In the present embodiment, the three-way valve 54 and the fan 53 are controlled independently.
  • FIG. 5 is a flowchart showing a flow of heat exchanger temperature determination by the heat exchanger temperature determination unit 66. Furthermore, the case where the three-way valve 54 is in the second state and the flow of water from the first pipe 5a to the second pipe 5b is blocked is described here.
  • the capability supply determination unit 65 transmits the request information to the operation unit 64 so that the cold water flows into the heat exchanger 52 (step S1).
  • the operation unit 64 transmits an energization signal to the three-way valve 54 such that the request information is transmitted from the capability supply determination unit 65 so that the three-way valve 54 is in the first state.
  • the three-way valve 54 is switched from the second state to the first state, and cold water flows into the heat exchanger 52.
  • the heat exchanger temperature determination unit 66 determines whether the three-way valve 54 is switched from the second state to the first state for a second predetermined time (for example, the heat exchanger temperature and the temperature of the cold water flowing in the heat exchanger 52). After the elapse of a time such that becomes equal, the heat exchanger temperature is determined (step S2). When the heat exchanger temperature determination unit 66 determines that cold water can be supplied to the heat exchanger 52, the supply availability information is transmitted to the operation unit 64 (step S3 and step S4). When the supplyable information is transmitted from the heat exchanger temperature determination unit 66, the operation unit 64 transmits an energization signal to the three-way valve 54 so that the state of the three-way valve 54 is maintained in the first state. .
  • the capability supply determination unit 65 transmits non-request information to the operation unit 64 (step S5).
  • the operation unit 64 transmits a non-energization signal to the three-way valve 54 so that the state of the three-way valve 54 is switched from the first state to the second state. To do. As a result, the state of the three-way valve 54 is switched from the first state to the second state.
  • the heat exchanger temperature determination unit 66 transmits the supplyable information to the operation unit 64, when the capability supply determination unit 65 does not determine that the capability supply is not necessary, that is, from the capability supply determination unit 65 to the operation unit 64. If the non-request information is not transmitted to the heat exchanger, the heat exchanger temperature is determined again (step S6). When the heat exchanger temperature determination unit 66 determines in the heat exchanger temperature determination in step S6 that cold water can be supplied to the heat exchanger 52 again (step S7), the heat exchanger temperature determination unit 66 returns to step S4 to return to the operation unit. 64, the supplyable information is transmitted.
  • the operation unit 64 transmits an energization signal to the three-way valve 54 so that the state of the three-way valve 54 is maintained in the first state. . Thereby, the state of the three-way valve 54 is maintained in the first state without switching to the second state.
  • the heat exchanger temperature determination unit 66 determines that the cold water cannot be supplied to the heat exchanger 52 in the heat exchanger temperature determination (step S6) performed after transmitting the supplyable information to the operation unit 64, The supply impossible information is transmitted to the operation unit 64 so that water does not further flow into the exchanger 52 (step S8).
  • step S6 is not possible to supply cold water to the heat exchanger 52 until it is determined in the capacity supply determination unit 65 that the capacity supply is not necessary, or in the heat exchanger temperature determination in step S6. This is repeated until it is determined (step S5 and step S7).
  • the heat exchanger temperature determination unit 66 determines that cold water cannot be supplied to the heat exchanger 52 in step S3, the heat exchanger temperature determination unit 66 transmits the supply impossible information to the operation unit 64 so that water does not flow into the heat exchanger 52. (Step S8).
  • the operation unit 64 transmits a de-energization signal to the three-way valve 54 so that the state of the three-way valve 54 is switched to the second state. .
  • the state of the three-way valve 54 is switched from the first state to the second state.
  • the operation unit 64 ignores the request information transmitted from the capacity supply determination unit 65 until the first predetermined time elapses after the supply impossible information is transmitted from the heat exchanger temperature determination unit 66. For this reason, the operation unit 64 does not transmit an energization signal to the three-way valve 54 until the first predetermined time elapses after the supply impossible information is transmitted from the heat exchanger temperature determination unit 66. For this reason, even if it determines with capability supply determination part 65 requiring capability supply, the state of the three-way valve 54 is maintained in the state switched to the 2nd state.
  • the operation unit 64 receives non-request information from the capacity supply determination unit 65 during a period from when the supply impossible information is transmitted from the heat exchanger temperature determination unit 66 to when the first predetermined time elapses. Is transmitted to the three-way valve 54 (step S9). Also in this case, the state of the three-way valve 54 is maintained in the state switched to the second state.
  • the operation part 64 is the case where non-request information is not transmitted from the capability supply determination part 65 until the 1st predetermined time passes after the supply impossible information is transmitted from the heat exchanger temperature determination part 66, that is,
  • an energization signal is transmitted to the three-way valve 54 ( Step S10).
  • the state of the three-way valve 54 is switched from the second state to the first state.
  • the heat exchanger temperature determination part 66 performs heat exchanger temperature determination again after 2 second predetermined time passes, after the three-way valve 54 switches from a 2nd state to a 1st state (step S11).
  • the heat exchanger temperature determination unit 66 determines that the cold water can be supplied to the heat exchanger 52 in the heat exchanger temperature determination in step S11
  • the heat exchanger temperature determination unit 66 can return to step S4 and supply it to the operation unit 64.
  • Information is transmitted (step S12).
  • the operation unit 64 transmits an energization signal to the three-way valve 54 so that the state of the three-way valve 54 is maintained in the first state. . Thereby, the state of the three-way valve 54 is maintained in the first state without switching to the second state.
  • step S11 If the heat exchanger temperature determination unit 66 determines that cold water cannot be supplied to the heat exchanger 52 in the heat exchanger temperature determination in step S11, the heat exchanger temperature determination unit 66 returns to step S8 and cannot supply it to the operation unit 64.
  • Information is transmitted (step S12).
  • the operation unit 64 deenergizes the three-way valve 54 so that the state of the three-way valve 54 is switched from the first state to the second state. Send a signal.
  • the state of the three-way valve 54 is switched from the first state to the second state.
  • the heat exchanger temperature determination unit 66 repeats the heat exchanger temperature determination at step S6 or step S11 every predetermined time until the capability supply determination unit 65 determines that the capability supply is not necessary.
  • the cooling operation controller 61 changes the state of the three-way valve 54 to the first state or the second state so that the heat exchanger temperature value does not become lower than the dew point temperature of the air in the indoor spaces 50a, 50b.
  • the first cooling control to switch to is executed. For this reason, when 1st cooling control is performed by the cooling operation control part 61, the temperature of the heat exchanger 52 may become lower than the dew point temperature of the air in the indoor space 50a, 50b at the time of cooling. Can be reduced. As a result, the possibility that condensation occurs in the heat exchanger 52 can be reduced.
  • the capacity supply more than necessary is suppressed by controlling the three-way valve 54, and it is in the indoor spaces 50a and 50b even during cooling.
  • a cooling operation in which air is not easily dehumidified can be realized.
  • the temperature of air can be reduced without taking too much moisture from the air in the indoor spaces 50a and 50b, comfort can be improved.
  • the first cooling control is performed during cooling and no condensation occurs in the heat exchanger 52, there is no need to provide a drain pipe for discharging the generated condensation outside the room. Therefore, when only the first cooling control is executed during cooling, it is not necessary to provide a drain pipe, and therefore the workability of the radiator 50 can be improved.
  • the predetermined range is a region equal to or higher than the threshold value X calculated by the dew point temperature calculation unit 62, that is, a value equal to or higher than an estimated value of the dew point temperature of air in the indoor space.
  • the heat exchanger temperature determination unit 66 determines that the heat exchanger temperature value is not within the predetermined range by executing the first cooling control, the inflow of cold water to the heat exchanger 52 is performed. Therefore, the temperature of the heat exchanger 52 can be prevented from further lowering. Thereby, the possibility that the temperature of the heat exchanger 52 becomes lower than the dew point temperature of the air in the indoor spaces 50a, 50b can be reduced.
  • the dew point temperature calculation unit 62 is based on the environmental conditions of the area where the radiator 50 is installed and the indoor temperature value obtained from the indoor temperature information transmitted from the indoor temperature detection unit 55. , 50b, a threshold value X, which is a value obtained by estimating the dew point temperature of air, is calculated. Therefore, the dew point temperature of the air in the indoor spaces 50a and 50b can be estimated without providing a humidity sensor that detects the humidity of the air in the indoor spaces 50a and 50b.
  • the cooling operation control unit 61 determines whether to perform the first cooling control or the second cooling control at the time of cooling depending on the cut state of the jumper 69. Therefore, the user can set which of the first cooling control and the second cooling control is to be executed by the cooling operation control unit 61 when the indoor spaces 50a and 50b are cooled. Thereby, the indoor spaces 50a and 50b can be cooled according to the convenience of the user.
  • the three-way valve 54 is employed to block the flow of cold water flowing into the heat exchanger 52.
  • a two-way valve solenoid valve
  • the radiator pipe 105 is connected to the third inflow side pipe 4 as shown in FIG. 105 a, a second pipe 105 b that connects the two-way valve 154 and the heat exchanger 52, and a third pipe 105 c that connects the heat exchanger and the first outflow side pipe 6.
  • the cooling operation control unit can switch the state of the two-way valve 154 to the open state or the closed state so that the temperature of the heat exchanger 52 becomes equal to or higher than the dew point temperature of the air in the indoor space. Cooling control can be executed.
  • the motor operated valve of the structure which can adjust flow volume may be provided instead of the solenoid valve.
  • the opening of the motorized valve is adjusted so that the temperature of the heat exchanger is equal to or higher than the dew point temperature.
  • the flow rate may be adjusted.
  • the dew point temperature is estimated based on the room temperature value.
  • the radiator may include an indoor humidity detector that can detect the relative humidity of the indoor space.
  • the dew point temperature calculation unit may calculate the threshold value based on the indoor humidity value and the indoor temperature value obtained from the indoor humidity information detected by the indoor humidity detection unit.
  • the first cooling control is executed, so that the state of the three-way valve 54 is switched so that the heat exchanger temperature does not fall below the dew point temperature during cooling.
  • the determination unit further performs water temperature determination to determine whether the temperature of the water flowing into the heat exchanger is within a predetermined temperature range (for example, a temperature range that does not exceed the use range of the heat exchanger).
  • the three-way valve is in the second state so that water does not flow into the heat exchanger. Control to switch to may be performed. In this way, when the state of the three-way valve is switched depending on the temperature of the water flowing into the heat exchanger, the risk that water having a temperature exceeding the use range of the heat exchanger will flow into the heat exchanger is reduced. Can do.
  • the heat exchange is performed when the dew point temperature in the indoor space is a low temperature exceeding the use range of the heat exchanger. Even if the vessel temperature is higher than the dew point temperature, the three-way valve is switched to the second state. For this reason, since the possibility that water having a temperature exceeding the use range of the heat exchanger may flow into the heat exchanger during the execution of the first cooling control can be reduced, the possibility that the heat exchanger is damaged is reduced. Can do.
  • the present invention can reduce the possibility of dew condensation in the heat exchanger, it can be effectively applied to a radiator that draws in cold water and cools the indoor space.

Landscapes

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

Abstract

L'invention porte sur des radiateurs (50) dans lesquels de l'eau froide est introduite en provenance d'une machine source de chaleur (10), pour rafraîchir des espaces intérieurs (50a, 50b). Chaque radiateur (50) comporte un échangeur de chaleur (52), un premier tuyau (5a), une soupape à trois voies (54), une unité de détection de la température de l'échangeur de chaleur (56) et une unité de commande (60). L'eau froide passe par le premier tuyau (5a), du côté machine source de chaleur (10) vers le côté échangeur de chaleur (52). La soupape à trois voies (54) règle le débit d'eau froide qui passe à travers l'échangeur de chaleur (52). L'unité de détection de la température de l'échangeur de chaleur (56) peut détecter la température de l'échangeur de chaleur (52). L'unité de commande (60) effectue une première commande de rafraîchissement pour commander la soupape à trois voies (54) de telle sorte que la température de l'échangeur de chaleur (52) détectée par l'unité de température de l'échangeur de chaleur (56) n'est pas inférieure à la température de point de rosée de l'air dans les espaces intérieurs (50a, 50b).
PCT/JP2010/000096 2010-01-08 2010-01-08 Radiateur WO2011083517A1 (fr)

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EP10784940.8A EP2363659B1 (fr) 2010-01-08 2010-01-08 Radiateur
PCT/JP2010/000096 WO2011083517A1 (fr) 2010-01-08 2010-01-08 Radiateur

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CN106765859A (zh) * 2015-11-23 2017-05-31 广东美的制冷设备有限公司 空调的制冷除湿控制方法及空调系统
DE102019200097A1 (de) * 2019-01-07 2020-07-09 Robert Bosch Gmbh Beschränkung der Mindesttemperatur
CN112781134A (zh) * 2021-02-06 2021-05-11 重庆海润节能技术股份有限公司 分集水器混水装置及其控制方法

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EP2363659B1 (fr) 2016-07-13
EP2363659A1 (fr) 2011-09-07

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