WO2013140954A1 - Appareil de chauffage de type pompe à chaleur - Google Patents

Appareil de chauffage de type pompe à chaleur Download PDF

Info

Publication number
WO2013140954A1
WO2013140954A1 PCT/JP2013/054786 JP2013054786W WO2013140954A1 WO 2013140954 A1 WO2013140954 A1 WO 2013140954A1 JP 2013054786 W JP2013054786 W JP 2013054786W WO 2013140954 A1 WO2013140954 A1 WO 2013140954A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
heat medium
heating
value
heat
Prior art date
Application number
PCT/JP2013/054786
Other languages
English (en)
Japanese (ja)
Inventor
焦 石井
Original Assignee
サンデン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by サンデン株式会社 filed Critical サンデン株式会社
Publication of WO2013140954A1 publication Critical patent/WO2013140954A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/18—Hot-water central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/227—Temperature of the refrigerant in heat pump cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/258—Outdoor temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F24H15/38—Control of compressors of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F24H15/385—Control of expansion valves of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/072—Intercoolers therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/027—Compressor control by controlling pressure
    • F25B2600/0271—Compressor control by controlling pressure the discharge pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/13—Pump speed control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
    • F25B27/005—Machines, plants or systems, using particular sources of energy using solar energy in compression type systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2106—Temperatures of fresh outdoor air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21161—Temperatures of a condenser of the fluid heated by the condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • 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]
    • Y02B30/12—Hot water central heating systems using heat pumps
    • 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]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • a heating device using a heat pump including a refrigerant heat exchanger, a compressor, a heat medium heat exchanger, and an expansion valve heats water as a heat medium to a panel-type radiator that is an indoor heater installed in each room.
  • a heating device that heats the room by flowing the hot water.
  • FIG. 1 shows a schematic configuration of this heat pump heating device.
  • the heat pump type heating device circulates hot water through the panel radiators PR1 to PR4 of the heating terminal by the heat pump type heating device 2 and the circulation pump 3 controlled by the control device 1, and these panel radiators PR1 to PR4 are installed.
  • the rooms A to D are heated.
  • the control device 1 measures the temperature of the hot water (outward heating medium temperature) sent from the heating device 2 toward the heating terminal by the circulation pump 3 by the temperature sensor 1a, and returns to the heating device 2 through the heating terminal. Is measured by the temperature sensor 1b, and the heating device 2 according to the heating load calculated based on the measured value, the outside air temperature measured by the outside air temperature sensor 1c, the set heating temperature, and the like. And the circulation pump 3 is controlled.
  • the hot water sent out by the circulation pump 3 is distributed in parallel to the plurality of panel radiators PR1 to PR4 via the forward header (distributor) 4, and the warm water returning from the plurality of panel radiators PR1 to PR4 is returned to the return header ( Merge together via the merger 5 and return to the heating device 2.
  • hot water flows in and flows through the thermo valves TV1 to TV4 provided with the thermo head, and then returns to the return header 5 from the hot water outlet.
  • the thermo valves TV1 to TV4 provided at each hot water inlet are one of the ambient temperature-sensitive individual flow control devices, and the valve opening is automatically set according to the ambient temperature of the place where the thermo valves TV1 to TV4 are installed. It is adjusted and the flow rate of hot water passing through it is automatically adjusted according to the ambient temperature, that is, the room temperature.
  • thermoelectric heating device 2 of such a heating device there is a hot water storage type device capable of storing hot water in a hot water supply tank as disclosed in Patent Literatures 1 and 2, and disclosed in Patent Literature 3. Some devices do not have a tank for hot water storage.
  • the control device 1 is required for heating based on the set heating temperature and the outside air temperature set through the operation panel as in Patent Document 1, for example.
  • the capacity is calculated, and the temperature of the outgoing heat medium is calculated from this (Equation 1).
  • F heating medium circulation rate k: coefficient
  • the rooms A to D where the panel radiators PR1 to PR4 of the heating appliance are respectively installed have various arrangements and sizes in one building, and the heating loads are various. Some rooms are large and have a large heating load throughout the day. Some rooms have east facing and the heating load increases in the afternoon, and conversely the heating load decreases in the west facing room in the afternoon. Therefore, in the panel radiators PR1 to PR4 of the rooms A to D, the thermo valves TV1 to TV4 each adjust the flow rate of the hot water according to the room temperature of each room, and the adjustment of the heating capacity according to the environment of the room is individually performed. To be implemented.
  • the control device 1 controls the outgoing heat medium temperature (heating capacity) based on the return heat medium temperature of the hot water that has joined the rooms A to D and then joined through the return header 5.
  • the individual thermo valves TV1 to TV4 are configured to perform individual adjustment according to the individual heating load of each of the rooms A to D.
  • each thermo valve TV1 to TV4 individually adjusts the hot water flow rate in each room A to D, even if the same total heating load 3.2 kW ⁇ 2.8 kW change, the circulation amount of the hot water varies depending on the case.
  • FIG. 2B it is assumed that the total heating load of all the rooms A to D has decreased from 3.2 kW to 2.8 kW. That is, it is assumed that the room where the individual heating load increases and the room where the individual heating load decreases and the total heating load of each of the rooms A to D is totaled, the result is a decrease in the overall heating load. Since each thermo valve TV1 to TV4 individually adjusts the hot water flow rate in each room A to D, even if the same total heating load 3.2 kW ⁇ 2.8 kW change, the circulation amount of the hot water varies depending on the case. In FIG.
  • the return heat medium temperature measured by the temperature sensor 1b is the total heating load of all the rooms A to D. (I.e., the heating load that the heating device 2 should originally bear) does not accurately appear, and due to individual heating load fluctuations associated with the heating appliances PR1 to PR4 in the rooms A to D, even if the same total heating load, Become.
  • the control device 1 determines the heating capacity based on [outward heating medium temperature 60 ° C. ⁇ returning heat medium temperature 26 ° C.]. Since the heating capacity is determined based on the medium temperature 60 ° C.-the return heating medium temperature 30.2 ° C., different heating capacity is set depending on the situation for the same heating load 2.8 kW. That is, in the case of a central heating type heating device, there is a case where the heating capacity of the heating device 2 is not accurately controlled in response to a change in the heating load only by the return heat medium temperature. In this regard, there is room for improvement in the heating device.
  • the present invention proposes to compress the refrigerant absorbed by the refrigerant heat exchanger with a compressor, pass the compressed refrigerant through the heat medium heat exchanger, and then expand the refrigerant with an expansion valve.
  • a heating device that circulates to the refrigerant heat exchanger, a heating terminal that passes the heat medium absorbed by the heat medium heat exchanger, and circulates the heat medium between the heat medium heat exchanger and the heating terminal.
  • a heat pump type heating device including a circulation pump and a control device that controls the heating capacity of the heating device, and the control device performs control of the following mode.
  • the control device of the first aspect includes: Determine the required heating capacity, Operating the compressor at the rotational speed of the determined heating capacity and controlling the expansion valve so that the discharge temperature of the compressor becomes a predetermined value;
  • the forward heat medium temperature measurement value obtained by measuring the temperature of the heat medium sent from the heat medium heat exchanger to the heating terminal is controlled so as to coincide with the forward heat medium temperature determination value of the determined heating capacity, After determining that the measured value of the forward heat medium temperature coincides with the determined value of the forward heat medium temperature, measure the refrigerant outlet temperature on the outlet side of the heat medium heat exchanger, and based on the measured value of the refrigerant outlet temperature, Change the heating capacity determined.
  • the control device of the second aspect is Determine the required heating capacity, Operating the compressor at the rotational speed of the determined heating capacity and determining whether the compressor rotational speed is equal to or higher than a predetermined threshold; When it is determined that the threshold value is equal to or greater than the threshold value, the measured value of the forward heat medium temperature measured for the temperature of the heat medium sent from the heat medium heat exchanger to the heating terminal coincides with a predetermined constant value of the forward heat medium temperature.
  • the forward heating medium temperature measurement value is controlled so as to coincide with the forward heating medium temperature determination value of the determined heating capacity. After determining that the measured value of the forward heat medium temperature coincides with the constant value of the forward heat medium temperature or the determined value of the forward heat medium temperature, the refrigerant outlet temperature on the outlet side of the heat medium heat exchanger is measured, and the refrigerant The determined heating capacity is changed based on the measured outlet temperature.
  • the change of the determined heating capacity based on the measured value of the refrigerant outlet temperature includes at least the following.
  • A) The refrigerant outlet temperature measurement value is compared with the refrigerant outlet temperature memory value in the determined heating capacity, and as a result of the comparison, there is a difference between the refrigerant outlet temperature measurement value and the refrigerant outlet temperature memory value.
  • the determined heating capacity is changed so as to eliminate the difference.
  • B) A temperature difference between the measured value of the refrigerant outlet temperature and the measured value of the outgoing heat medium temperature or the compressor discharge temperature is obtained, and the measured temperature difference is compared with the stored temperature difference in the determined heating capacity. And as a result of the comparison, if there is a difference between the measured temperature difference and the stored temperature difference, the determined heating capacity is changed so as to eliminate the difference.
  • the heating device includes a two-stage heating device and a binary heating device.
  • the two-stage heating device compresses the refrigerant absorbed by the refrigerant heat exchanger with the first-stage compressor, passes the compressed refrigerant through the first-stage heat medium heat exchanger, The refrigerant is compressed by a stage compressor, and the compressed refrigerant is passed through a second stage heat medium heat exchanger, then expanded by an expansion valve and circulated through the refrigerant heat exchanger.
  • the binary heating apparatus compresses the refrigerant that has absorbed heat with the refrigerant heat exchanger with a low-source compressor, passes the compressed refrigerant through the low-source heat medium heat exchanger, and then further cascades the heat exchanger
  • the low-end cycle in which the refrigerant is expanded by a low-source expansion valve and then circulated to the refrigerant heat exchanger, and the refrigerant absorbed by the cascade heat exchanger is compressed by a high-source compressor, and the compressed refrigerant is A high-source cycle that is passed through a high-source heat medium heat exchanger and then expanded by a high-source expansion valve and circulated to the cascade heat exchanger.
  • the heating capacity of the heating device is controlled based on the refrigerant outlet temperature at the outlet of the heat medium heat exchanger.
  • the refrigerant outlet temperature of the refrigerant circulating in the closed circuit is different from the return heat medium temperature affected by the individual heating load as described above, and is a value reflecting the heat absorption of the return heat medium after merging, and is the total heating load. More accurately. Therefore, by checking whether or not the refrigerant outlet temperature becomes a value planned for the determined heating capacity at that time, it is possible to more accurately determine the excess or deficiency of the determined heating capacity than before.
  • the heating device uses four heat radiators PR1 to PR4 in this example as a heating terminal through a heat pump type heating device 2 and a circulation pump 3 controlled by the control device 1.
  • the control device 1 includes a temperature sensor 1a for measuring the temperature of the heat medium sent from the heating device 2 to the heating terminal (forward heat medium temperature) by the circulation pump 3, and a heat medium returning to the heating device 2 through the heating terminal.
  • a temperature sensor 1b that measures the temperature (return heat medium temperature), and various sensors such as an outside air temperature sensor 1c that measures the outside air temperature.
  • water is normally used as a heat medium, other suitable liquid or gas can also be used for a heat medium.
  • the refrigerant is typically CO 2, but other refrigerants may be used.
  • the hot water sent out by the circulation pump 3 is distributed in parallel to the plurality of panel radiators PR1 to PR4 via the distribution outgoing header 4, and the warm water returning from the plurality of panel radiators PR1 to PR4 is returned for confluence. It merges into one via the header 5 and returns to the heating device 2.
  • hot water flows in and flows through the thermo valves TV1 to TV4 provided with the thermo head, and then returns to the return header 5 from the hot water outlet.
  • the thermo valves TV1 to TV4 provided at each hot water inlet are one of the ambient temperature-sensitive individual flow control devices, and the valve opening is automatically set according to the ambient temperature of the place where the thermo valves TV1 to TV4 are installed. It is adjusted and the flow rate of hot water passing through it is automatically adjusted according to the ambient temperature, that is, the room temperature.
  • the heating device 2 of the first embodiment includes a refrigerant heat exchanger 2a, a compressor 2b, a heat medium heat exchanger 2c, and an expansion valve 2d.
  • the refrigerant absorbs heat in the refrigerant heat exchanger 2a for exchanging heat with the outside, such as the atmosphere or underground heat, and is compressed by the compressor 2b.
  • the compressed refrigerant discharged from the compressor 2b exchanges heat with the heat medium in the heat medium heat exchanger 2c, and circulates to the refrigerant heat exchanger 2a after expansion by the expansion valve 2d.
  • the discharge temperature of the refrigerant discharged from the compressor 2b is measured by the temperature sensor 2e, and the refrigerant outlet temperature is measured by the temperature sensor 2f provided on the outlet side of the heat medium heat exchanger 2c.
  • the discharge temperature and the refrigerant outlet temperature measured by the temperature sensors 2e and 2f are provided to the control device 1.
  • the heat medium absorbed by the heat medium heat exchanger 2c is sent out by the circulation pump 3 and distributed by the forward header 4 and flows through the panel radiators PR1 to PR4 of the heating terminal via the thermo valves TV1 to TV4. Merge and circulate to the heat medium heat exchanger 2c.
  • the control device 1 mainly controls the circulation pump 3 that circulates the heat medium between the heat medium exchanger 2c and the heating terminal, and the compressor 2b and the expansion valve 2d of the heating device 2 to thereby control the heating device 2. Control the heating capacity of the.
  • a first example of the heating capacity control is shown in the flowchart of FIG.
  • the control device 1 determines the necessary heating capacity, operates the compressor 2b at the rotational speed of the determined heating capacity, and expands so that the discharge temperature of the compressor 2b becomes a predetermined value.
  • the valve 2d is controlled.
  • the circulating pump is set so that the measured value of the temperature of the forward heat medium measured by the temperature sensor 1a from the heat medium heat exchanger 2c to the heating terminal coincides with the determined value of the forward heat medium temperature of the determined heating capacity. 3 is controlled.
  • the refrigerant outlet temperature on the outlet side of the heat medium heat exchanger 2c is measured by the temperature sensor 2f, and this measured value of the refrigerant outlet temperature.
  • the refrigerant outlet temperature memory value in the determined heating capacity is compared, and if there is a difference between the refrigerant outlet temperature measured value and the refrigerant outlet temperature memory value as a result of the comparison, The determined heating capacity is changed so as to eliminate the difference.
  • step S0 the control device 1 calculates the heating load from the above-described formula 1 based on the outside air temperature measured by the outside air temperature sensor 1c and the set heating temperature set by the operation panel or the like, and necessary heating is performed. Determine ability.
  • the determination of the heating capacity is to determine the rotational speed of the compressor 2b and the forward heat medium temperature at the rotational speed.
  • the forward heat medium temperature determination value corresponding to the compressor rotational speed determined at this time is data stored in advance as a table in the control device 1.
  • the control device 1 rotates the compressor 2b at the determined rotational speed, and the expansion valve 2d so that the discharge temperature measured by the temperature sensor 2e becomes a predetermined value set corresponding to the compressor rotational speed.
  • step S1 the control device 1 measures the forward heat medium temperature with the temperature sensor 1a, and the rotational speed of the circulation pump 3 so that the measured value of the forward heat medium temperature coincides with the determined value of the forward heat medium temperature in step S0.
  • the control device 1 determines that the measured values of the forward heat medium temperature coincide with each other when the measured value of the forward heat medium temperature converges within an allowable range with respect to the determined value of the forward heat medium temperature.
  • the coincidence control of the measured values of the outgoing heat medium temperature in steps S0 to S1 can be performed in the steps of FIG. 5 or FIG.
  • step S0-1 in FIG. 5 the control device 1 determines the rotational speed and the forward heat medium temperature of the compressor 2b in the same manner as in step S0 in FIG.
  • step S1-1a the control device 1 rotates the compressor 2b at the determined rotational speed, and controls the expansion valve 2d so that the discharge temperature has a predetermined value corresponding thereto.
  • step S1-1b the control device 1 determines whether or not the measured value of the forward heat medium temperature matches the determined value of the forward heat medium temperature in step S0-1. The control after step S2 described later is executed.
  • step S1-1b determines whether or not the discharge temperature related to the determination in step S0-1 has reached the maximum value in step S1-1c, and if not, In step S1-1d, the discharge temperature is changed and the process is repeated from step S1-1a. If the discharge temperature has reached the maximum value, the control device 1 changes the compressor rotational speed and the forward heat medium temperature related to the determination in step S0-1 in step S1-1e, and repeats from step S1-1a.
  • step S0-2 in FIG. 6 the control device 1 determines the rotational speed of the compressor 2b and the outgoing heat medium temperature in the same manner as in step S0 in FIG. 4. At this time, the rotational speed of the corresponding circulation pump 3 is further determined. Also decide.
  • step S1-2a the control device 1 executes the operation at the determined compressor rotation speed, the corresponding discharge temperature, and the circulation pump rotation speed. Subsequently, in step S1-2b, the control device 1 determines whether or not the measured value of the forward heat medium temperature matches the determined value of the forward heat medium temperature in step S0-2. The control after step S2 described later is executed.
  • step S1-2c determines whether the circulating pump rotational speed has reached the maximum value or the minimum value.
  • step S1-2d the circulation pump rotational speed is changed, and the process is repeated from step S1-2a.
  • the control device 1 determines whether or not the discharge temperature related to the determination in step S0-2 has reached the maximum value in step S1-2e. If not, the discharge temperature is changed in step S1-2f, and the process is repeated from step S1-2a. If the discharge temperature has reached the maximum value, the controller 1 changes the compressor rotation speed and the forward heat medium temperature determined in step S0-2 in step S1-2g, and repeats from step S1-2a.
  • the control device 1 measures the refrigerant outlet temperature by the temperature sensor 2f.
  • the control device 1 reads out the refrigerant outlet temperature storage value stored in advance in the built-in memory or the like.
  • the stored refrigerant outlet temperature value is a value stored in correspondence with the determined value of the forward heat medium temperature (or compressor rotational speed), and the compressor rotational speed and the forward heat medium temperature of the determined heating capacity determined in step S0.
  • the temperature should be that the refrigerant should be after heat exchange with the heat medium in the heat medium heat exchanger 2c.
  • step S3 determines in step S0 so as to eliminate the difference between the measured value of the refrigerant outlet temperature and the stored value in step S4.
  • the heating capacity is changed, that is, re-determined, and the process returns to step S1.
  • the control device 1 in the case of measured value ⁇ stored value determines that the determined heating capacity in step S0 is insufficient, and sets the heating capacity so that the difference is eliminated. Make it high.
  • the control device 1 in the case of measured value> stored value determines that the determined heating capacity in step S0 is excessive, and the difference is eliminated. Reduce heating capacity.
  • the heating capacity is changed to eliminate this.
  • the refrigerant outlet temperature of the refrigerant circulating in the closed circuit in the heating device 2 is influenced by the individual heating load (which depends on the thermo valve or the like) related to each of the heating appliances PR1 to PR4 constituting the heating terminal, like the return heat medium temperature described above. It is not subject to voluntary flow fluctuation). That is, the refrigerant outlet temperature is a value reflecting the heat absorption of the return heat medium after merging in the return header 5 and more accurately represents the total heating load that should be originally taken. Therefore, the refrigerant outlet temperature is determined heating capacity. By checking whether or not the planned value is reached, it is possible to more accurately determine the excess or deficiency of the determined heating capacity than before.
  • a second example of the heating capacity control executed by the heating device 2 is shown in the flowchart of FIG.
  • the control device 1 determines the necessary heating capacity, operates the compressor 2b at the rotational speed of the determined heating capacity, and expands so that the discharge temperature of the compressor 2b becomes a predetermined value.
  • the valve 2d is controlled.
  • the circulating pump is set so that the measured value of the temperature of the forward heat medium measured by the temperature sensor 1a from the heat medium heat exchanger 2c to the heating terminal coincides with the determined value of the forward heat medium temperature of the determined heating capacity. 3 is controlled.
  • the refrigerant outlet temperature on the outlet side of the heat medium heat exchanger 2c is measured by the temperature sensor 2f, and this measured value of the refrigerant outlet temperature. Difference between the measured value and the measured value of the temperature of the forward heating medium measured by the temperature sensor 1a, and the measured temperature difference is compared with the stored temperature difference in the determined heating capacity stored in the control device 1 in advance. As a result of the comparison, if there is a difference between the measured value temperature difference and the stored temperature difference, the determined heating capacity is changed so as to eliminate the difference.
  • This second example is different from the first example in that a measured value temperature difference between the measured value of the refrigerant outlet temperature and the measured value of the outgoing heat medium temperature is set as a determination target. That is, the temperature difference between the determined value of the forward heat medium temperature and the refrigerant outlet temperature stored value shown in the graph in FIG. 4 is prepared in advance as a table, and control is performed based on this stored temperature difference.
  • Steps S10 to S11 are the same as in the first example (FIGS. 4 to 6).
  • the control device 1 determines the heating capacity
  • the control device 1 measures the temperature of the forward heat medium by the temperature sensor 1a, and the measured value is determined. It is determined whether or not it becomes the determined value of the temperature of the forward heating medium.
  • the control device 1 When it is determined that the measured value of the forward heat medium temperature matches the determined value of the forward heat medium temperature, the control device 1 measures the refrigerant outlet temperature by the temperature sensor 2f. In step S12, the control device 1 calculates a measured value temperature difference between the measured value of the forward heat medium temperature and the measured value of the refrigerant outlet temperature. Next, in step S13, the control device 1 reads and compares the stored temperature difference stored in advance in the built-in memory or the like. This stored temperature difference is a value stored in correspondence with the heating capacity, that is, the compressor rotation speed, and is heated by the heat medium heat exchanger 2c at the compressor rotation speed of the determined heating capacity determined in step S10. This is the temperature difference between the medium and the refrigerant that should appear after heat exchange.
  • step S14 the control device 1 cancels the difference between the measured temperature difference and the stored temperature difference.
  • the heating capacity determined in step S10 is changed, that is, re-determined, and the process returns to step S11.
  • the control device 1 in the case of measured value temperature difference ⁇ stored temperature difference determines that the determined heating capacity in step S10 is excessive, and the difference is eliminated. Reduce heating capacity.
  • the control device 1 when the measured temperature difference> the stored temperature difference determines that the determined heating capacity in step S10 is insufficient, and the difference is eliminated. Increase the heating capacity.
  • the heating capacity is changed to eliminate this.
  • a third example of the heating capacity control executed by the heating device 2 is shown in the flowchart of FIG.
  • the control device 1 determines the necessary heating capacity, operates the compressor 2b at the rotational speed of the determined heating capacity, and expands so that the discharge temperature of the compressor 2b becomes a predetermined value.
  • the valve 2d is controlled.
  • the circulating pump is set so that the measured value of the temperature of the forward heat medium measured by the temperature sensor 1a from the heat medium heat exchanger 2c to the heating terminal coincides with the determined value of the forward heat medium temperature of the determined heating capacity. 3 is controlled.
  • the refrigerant outlet temperature on the outlet side of the heat medium heat exchanger 2c is measured by the temperature sensor 2f, and this measured value of the refrigerant outlet temperature.
  • Temperature difference between the measured value and the discharge temperature measurement value of the compressor 2b measured by the temperature sensor 2e, and this measured value temperature difference is stored in the control device 1 in advance, and the stored temperature difference in the determined heating capacity As a result of the comparison, if there is a difference between the measured value temperature difference and the stored temperature difference, the determined heating capacity is changed so as to eliminate the difference.
  • the third example is different from the second example in that the temperature difference is set to a measured value temperature difference between the refrigerant outlet temperature measured value and the discharge temperature measured value.
  • the ideal value of this temperature difference is prepared in advance as a table, and control is performed based on this stored temperature difference.
  • Steps S20 to S21 are the same as those in the first example (FIGS. 4 to 6) and the second example (FIG. 7), and the controller 1 determines the heating medium temperature by the temperature sensor 1a after determining the heating capacity. Then, it is determined whether or not the measured value becomes the determined value of the heating medium temperature for the determined heating capacity.
  • the control device 1 When it is determined that the measured value of the forward heat medium temperature matches the determined value of the forward heat medium temperature, the control device 1 measures the refrigerant outlet temperature by the temperature sensor 2f. In step S22, the control device 1 calculates a measured value temperature difference between the measured value of the refrigerant outlet temperature and the measured value of the discharge temperature of the compressor 2b measured by the temperature sensor 2e. Next, in step S23, the control device 1 reads and compares the stored temperature difference stored in advance in the built-in memory or the like. This stored temperature difference is a value stored in correspondence with the heating capacity, that is, the compressor rotation speed, and at the compressor rotation speed of the determined heating capacity determined in step S20, the inlet of the heat medium heat exchanger 2c.
  • step S23 if it is determined in step S23 that the measured temperature difference is not equal to the stored temperature difference, the controller 1 cancels the difference between the measured temperature difference and the stored temperature difference in step S24.
  • the heating capacity determined in step S20 is changed, that is, re-determined, and the process returns to step S21.
  • the control device 1 in the case of measured value temperature difference ⁇ stored temperature difference determines that the determined heating capacity in step S20 is excessive, and the difference is eliminated. Reduce heating capacity.
  • the control device 1 when the measured temperature difference> the stored temperature difference determines that the determined heating capacity in step S20 is insufficient, and the difference is eliminated. Increase the heating capacity.
  • the heating capacity is changed to eliminate this.
  • the stored temperature difference is set to increase (the difference opens) as the heating capacity increases (the compressor rotation speed increases).
  • FIG. 9 is a diagram illustrating the control of the heating device 2 according to the fourth example, which can further improve the coefficient of performance (COP). From the viewpoint of COP, it is more efficient to operate so that the refrigerant outlet temperature is as low as possible. Therefore, the control of the fourth example is control in consideration of this point.
  • COP coefficient of performance
  • a threshold value related to the rotational speed of the compressor 2b is provided, and at the rotational speed higher than this threshold value, the forward heat medium temperature is kept constant and only the refrigerant outlet temperature is maintained. If the control is performed so that only the forward heat medium temperature is changed while maintaining the refrigerant outlet temperature constant at the rotational speed lower than the threshold value, the COP is improved.
  • the rotational speed of the compressor 2b when the refrigerant outlet temperature lowers with respect to the constant value of the forward heat medium temperature is set as a threshold value, and the forward heat medium temperature is kept constant at the rotational speed higher than the threshold value. It is maintained (invariable determined value) and only the refrigerant outlet temperature is changed, and at a rotational speed lower than the threshold value, the refrigerant outlet temperature is maintained constant and only the forward heat medium temperature is changed (variable determined value).
  • this threshold value is a value that is stored when the heating apparatus is installed based on the assumed heating load determined according to the number of rooms, the total floor area, and the like in the house to be installed.
  • the control device 1 After determining the necessary heating capacity in the same manner as described above (step S0), the controller 1 at the rotational speed of the determined heating capacity.
  • the compressor 2b is operated, and it is determined whether or not the determined rotational speed of the compressor 2b is equal to or higher than a predetermined threshold th.
  • a predetermined threshold th As shown in FIG. 9A, when it is determined that the control device 1 is equal to or greater than the threshold th, the temperature of the heat medium sent from the heat medium heat exchanger 2c to the heating terminal is measured by the temperature sensor 1a.
  • the opening temperature of the expansion valve 2d and the rotational speed of the circulation pump 3 are controlled so that the measured value matches a predetermined value of the forward heating medium temperature, and the discharge temperature and the amount of circulating heat medium are controlled.
  • the constant value of the forward heat medium temperature at this time is pre-stored data that is constant at, for example, 65 ° C. regardless of the heating capacity.
  • the control device 1 expands so that the measured value of the forward heat medium temperature measured by the temperature sensor 1a coincides with the determined value of the forward heat medium temperature of the determined heating capacity.
  • the valve 2d and the circulation pump 3 are controlled.
  • the forward heat medium temperature determination value at this time is prestored data that changes in accordance with the determined heating capacity.
  • the control device 1 can determine that the measured value of the forward heat medium temperature by the temperature sensor 1a matches the constant value of the forward heat medium temperature or the determined value of the forward heat medium temperature, the temperature of the refrigerant outlet on the outlet side of the heat medium heat exchanger 2c is set to the temperature. Measurement is performed by the sensor 2f (step S1). Next, the control device 1 reads a refrigerant outlet temperature storage value stored in advance in a built-in memory or the like. The stored refrigerant outlet temperature value is a value stored in correspondence with the heating capacity (compressor rotation speed), and at the compressor rotation speed of the determined heating capacity (step S0), the heat medium heat exchanger 2c. The temperature at which the refrigerant should be after heat exchange with the heat medium.
  • control apparatus 1 compares the refrigerant
  • control device 1 of the fifth example determines that the measured value of the forward heating medium temperature matches a constant value or a determined value according to the threshold value th (steps S10 to S11).
  • the refrigerant outlet temperature on the outlet side of the heat exchanger 2c is measured by the temperature sensor 2f.
  • the control apparatus 1 calculates
  • the stored temperature difference in S10) is compared (step S13).
  • the stored temperature difference at this time is a value in which the difference between the forward heat medium temperature constant value or the determined value and the refrigerant outlet temperature stored value in FIG. 9A is stored.
  • the control device 1 moves to the next heating capacity determination cycle, while the measured value temperature difference and the stored temperature difference have a difference. If there is, the determined heating capacity is changed so as to eliminate the difference (step S14).
  • the setting of the heat medium circulation amount takes the minimum value at the threshold value th.
  • the forward heat medium temperature is lowered by increasing the circulation amount of the heat medium while keeping the refrigerant outlet temperature constant.
  • COP is improved as shown in FIG. 9B.
  • control target values such as the compressor rotation speed, the forward heat medium temperature, and the refrigerant outlet temperature in each of the above examples are median values set corresponding to the outside air temperature measured by the outside air temperature sensor 1c.
  • either or both of an upper limit value and a lower limit value of the predetermined width may be provided. Control with a certain control width helps to prevent hunting.
  • FIG. 11 the form of the 2nd type
  • the refrigerant that has absorbed heat by the refrigerant heat exchanger 2a is compressed by the low-source compressor 2b, and the compressed refrigerant is passed through the low-source heat medium heat exchanger 2c.
  • the refrigerant absorbed by the cascade heat exchanger 2g is compressed by the high-source compressor 2h, and the compressed refrigerant is passed through the high-source heat medium heat exchanger 2i, and then the high-source expansion valve 2j Is provided with a high-order cycle that is expanded and circulated to the cascade heat exchanger 2g.
  • the low-source cycle is provided with a temperature sensor 2e for measuring the discharge temperature of the low-source compressor 2b and a temperature sensor 2f for measuring the outlet side temperature of the low-source heat medium heat exchanger 2c.
  • a temperature sensor 2k for measuring the discharge temperature of the original compressor 2h and a temperature sensor 21 for measuring the outlet side temperature of the high-source heat medium heat exchanger 2i are provided.
  • the return heat medium returned from the panel radiators PR1 to PR4 of the heating terminal via the return header 5 is distributed to the low-source heat medium heat exchanger 2c and the high-source heat medium heat exchanger 2i through the three-way valve 6 as a flow rate adjusting / distributing tool. Is done. After distribution, the heat medium that has exchanged heat through the low-source heat medium heat exchanger 2c and the high-source heat medium heat exchanger 2i is mixed in the mixing tank 2m, and then heated by the circulation pump 3 via the forward header 4. It is sent to the terminal and circulates between each heat medium heat exchanger 2c, 2i and the heating terminal.
  • the control of the first to fifth examples is applied even to a heating device using such a binary heating device 2.
  • the control device 1 of the second embodiment determines the required heating capacity and operates the compressors 2b and 2h at the rotational speed of the determined heating capacity.
  • the expansion valves 2d and 2j are controlled so that the discharge temperatures of the compressors 2b and 2h become a predetermined value (step S0).
  • the control device 1 uses the temperature sensor 1a to measure the temperature of the heat medium that passes through the heat medium heat exchangers 2c and 2i, is mixed in the mixing tank 2m, and is sent to the heating terminal by the circulation pump 3. Control is performed so that the measured temperature value matches the determined heating medium temperature value of the determined heating capacity (step S1).
  • the control device 1 sets the refrigerant outlet temperature on the outlet side of either or both of the heat medium heat exchangers 2c and 2i. Measured by the temperature sensors 2f and 2l, the measured value of the refrigerant outlet temperature is compared with the refrigerant outlet temperature memory value in the determined heating capacity (step S3). As a result of the comparison, if there is a difference between the measured value of the refrigerant outlet temperature and the stored value of the refrigerant outlet temperature, the control device 1 changes the determined heating capacity so as to eliminate the difference (step S4).
  • the control device 1 of the second embodiment determines the required heating capacity and each compressor at the rotational speed of the determined heating capacity. 2b and 2h are operated, and the expansion valves 2d and 2j are controlled so that the discharge temperatures of the compressors 2b and 2h become a predetermined value (step S10 or S20). Then, the control device 1 uses the temperature sensor 1a to measure the temperature of the heat medium that passes through the heat medium heat exchangers 2c and 2i, is mixed in the mixing tank 2m, and is sent to the heating terminal by the circulation pump 3. Control is performed so that the measured temperature value matches the determined heating medium temperature value of the determined heating capacity (step S11 or S21).
  • the control device 1 sets the refrigerant outlet temperature on the outlet side of either or both of the heat medium heat exchangers 2c and 2i.
  • the temperature difference between the measured value of the refrigerant outlet temperature measured by the temperature sensors 2f and 2l and the measured value of the forward heat medium temperature or the compressor discharge temperature measured by the temperature sensor 1a or the temperature sensors 2e and 2k is calculated. Obtained (step S12 or S22).
  • the control device 1 compares the measured temperature difference with the stored temperature difference in the determined heating capacity (step S13 or S23). As a result of the comparison, if there is a difference between the measured value temperature difference and the stored temperature difference, the control device 1 changes the determined heating capacity so as to eliminate the difference (step S14 or S24).
  • the control device 1 determines the required heating capacity, operates the compressors 2b and 2h at the rotational speed of the determined heating capacity, and these. It is determined whether one or both of the rotational speeds of the compressors 2b and 2h are equal to or higher than a predetermined threshold th.
  • the control device 1 determines that it is equal to or higher than the threshold th, the temperature of the heat medium that is mixed in the mixing tank 2m and sent to the heating terminal after passing through the heat medium heat exchangers 2c and 2i is sent to the temperature sensor 1a. Control is performed so that the measured value of the temperature of the forward heat medium measured in step 1 matches the predetermined value of the constant temperature of the forward heat medium.
  • the control device 1 when determining that the value is lower than the threshold value th, the control device 1 performs control so that the measured value of the forward heat medium temperature coincides with the determined value of the forward heat medium temperature of the determined heating capacity.
  • the control device 1 determines either one or both of the heat medium heat exchangers 2c and 2i.
  • the refrigerant outlet temperature on the outlet side is measured by the temperature sensors 2f and 2l, and the measured value of the refrigerant outlet temperature is compared with the refrigerant outlet temperature stored value in the determined heating capacity. As a result of the comparison, if there is a difference between the measured value of the refrigerant outlet temperature and the stored value of the refrigerant outlet temperature, the control device 1 changes the determined heating capacity so as to eliminate the difference.
  • the control device 1 of the second embodiment determines the necessary heating capacity, operates the compressors 2b and 2h at the rotational speed of the determined heating capacity, and these It is determined whether one or both of the rotational speeds of the compressors 2b and 2h are equal to or higher than a predetermined threshold th.
  • the control device 1 determines that it is equal to or higher than the threshold th, the temperature of the heat medium that is mixed in the mixing tank 2m and sent to the heating terminal after passing through the heat medium heat exchangers 2c and 2i is sent to the temperature sensor 1a. Control is performed so that the measured value of the temperature of the forward heat medium measured in step 1 matches the predetermined value of the constant temperature of the forward heat medium.
  • the control device 1 when determining that the value is lower than the threshold value th, the control device 1 performs control so that the measured value of the forward heat medium temperature coincides with the determined value of the forward heat medium temperature of the determined heating capacity.
  • the control device 1 determines either one or both of the heat medium heat exchangers 2c and 2i.
  • the refrigerant outlet temperature on the outlet side is measured by the temperature sensors 2f and 2l, and the temperature difference between the measured value of the refrigerant outlet temperature and the measured value of the forward heat medium temperature measured by the temperature sensor 1a is obtained.
  • the temperature difference is compared to the stored temperature difference in the determined heating capacity. If there is a difference between the measured temperature difference and the stored temperature difference as a result of the comparison, the control device 1 changes the determined heating capacity so as to eliminate the difference.
  • FIG. 12 shows a form of a two-stage heat pump cycle in which a compressor and a heat medium heat exchanger are provided in two stages as a third embodiment of the heat pump type heating apparatus 2.
  • the refrigerant absorbed by the refrigerant heat exchanger 2a is compressed by the first stage compressor 2b, and the compressed refrigerant is passed through the first stage heat medium heat exchanger 2c.
  • the refrigerant is compressed by the second stage compressor 2n, and the compressed refrigerant is passed through the second stage heat medium exchanger 2o. Thereafter, the refrigerant is expanded by the expansion valve 2d and circulated to the refrigerant heat exchanger 2a.
  • the discharge temperature of the first stage compressor 2b is measured by the temperature sensor 2e, and the outlet side temperature of the first stage heat medium heat exchanger 2c is measured by the temperature sensor 2f. Further, the discharge temperature of the second stage compressor 2n is measured by the temperature sensor 2p, and the outlet side temperature of the second stage heat medium heat exchanger 2o is measured by the temperature sensor 2q. Between the outlet side of the refrigerant heat exchanger 2a and the inlet side of the second stage compressor 2n, a bypass path having an on-off valve 2r is provided, and two units of the compressor 2b and the compressor 2n are operated, It is possible to switch between single-unit operation of the compressor 2n only.
  • the return heat medium returned from the panel radiators PR1 to PR4 of the heating terminal via the return header 5 is divided into the first stage heat medium heat exchanger 2c and the second stage heat medium heat exchanger 2o. After the divided flow, the heat medium exchanged through the first-stage heat medium heat exchanger 2c and the second-stage heat medium heat exchanger 2o merges through the three-way valve 7 as a flow rate adjusting and merger, and then the circulation pump 3 Is sent to the heating terminal via the forward header 4 and circulates between the heat medium heat exchangers 2c, 2o and the heating terminal.
  • the three-way valve 7 of the third embodiment may be located at the position of the three-way valve 6 of the second embodiment.
  • the three-way valve 6 of the second embodiment is three-way of the third embodiment. It may be in the position of the valve 7.
  • the control device 1 determines the required heating capacity and operates the compressors 2b and 2n at the rotational speed of the determined heating capacity.
  • the expansion valve 2d is controlled so that the discharge temperatures of the compressors 2b and 2n become a predetermined value (step S0).
  • the control device 1 joins the three-way valve 7 after passing through the heat medium heat exchangers 2c and 2o, and measures the temperature of the heat medium sent to the heating terminal by the circulation pump 3 with the temperature sensor 1a. Control is performed so that the measured temperature value matches the determined heating medium temperature value of the determined heating capacity (step S1).
  • the control device 1 sets the refrigerant outlet temperature on the outlet side of either or both of the heat medium heat exchangers 2c and 2o. Measured by the temperature sensors 2f and 2q, the measured value of the refrigerant outlet temperature is compared with the refrigerant outlet temperature stored value in the determined heating capacity (step S3). As a result of the comparison, if there is a difference between the measured value of the refrigerant outlet temperature and the stored value of the refrigerant outlet temperature, the control device 1 changes the determined heating capacity so as to eliminate the difference (step S4).
  • the control device 1 of the third embodiment determines the required heating capacity and each compressor at the rotational speed of the determined heating capacity. 2b and 2n are operated, and the expansion valve 2d is controlled so that the discharge temperature of each of the compressors 2b and 2n becomes a predetermined value (step S10 or S20). Then, the control device 1 joins the three-way valve 7 after passing through the heat medium heat exchangers 2c and 2o, and measures the temperature of the heat medium sent to the heating terminal by the circulation pump 3 with the temperature sensor 1a. Control is performed so that the measured temperature value matches the determined heating medium temperature value of the determined heating capacity (step S11 or S21).
  • the control device 1 sets the refrigerant outlet temperature on the outlet side of either or both of the heat medium heat exchangers 2c and 2o.
  • a temperature difference between the measured value of the refrigerant outlet temperature measured by the temperature sensors 2f and 2q and the measured value of the forward heat medium temperature or the compressor discharge temperature measured by the temperature sensor 1a or the temperature sensors 2e and 2p is calculated. Obtained (step S12 or S22).
  • the control device 1 compares the measured temperature difference with the stored temperature difference in the determined heating capacity (step S13 or S23). As a result of the comparison, if there is a difference between the measured value temperature difference and the stored temperature difference, the control device 1 changes the determined heating capacity so as to eliminate the difference (step S14 or S24).
  • the control device 1 of the third embodiment determines the necessary heating capacity, operates the compressors 2b and 2n at the rotation speed of the determined heating capacity, and these It is determined whether one or both of the rotational speeds of the compressors 2b and 2n are equal to or higher than a predetermined threshold th.
  • the control device 1 determines that it is equal to or greater than the threshold value th
  • the temperature of the heat medium that passes through the heat medium heat exchangers 2c and 2o merges at the three-way valve 7 and is sent to the heating terminal is detected by the temperature sensor 1a. Control is performed so that the measured value of the temperature of the forward heat medium measured in step 1 matches the predetermined value of the constant temperature of the forward heat medium.
  • the control device 1 when determining that the value is lower than the threshold value th, the control device 1 performs control so that the measured value of the forward heat medium temperature coincides with the determined value of the forward heat medium temperature of the determined heating capacity.
  • the control device 1 after determining that the measured value of the forward heat medium temperature coincides with the constant value of the forward heat medium temperature or the determined value of the forward heat medium temperature, the control device 1 performs either one or both of the heat medium heat exchangers 2c and 2o.
  • the refrigerant outlet temperature on the outlet side is measured by the temperature sensors 2f and 2q, and the measured value of the refrigerant outlet temperature is compared with the refrigerant outlet temperature stored value in the determined heating capacity. As a result of the comparison, if there is a difference between the measured value of the refrigerant outlet temperature and the stored value of the refrigerant outlet temperature, the control device 1 changes the determined heating capacity so as to eliminate the difference.
  • the control device 1 of the third embodiment determines the necessary heating capacity, operates the compressors 2b and 2n at the rotational speed of the determined heating capacity, and these. It is determined whether one or both of the rotational speeds of the compressors 2b and 2n are equal to or higher than a predetermined threshold th. Next, when the control device 1 determines that it is equal to or greater than the threshold value th, the temperature of the heat medium that passes through the heat medium heat exchangers 2c and 2o, merges at the three-way valve 7 and is sent to the heating terminal is detected by the temperature sensor 1a.
  • Control is performed so that the measured value of the temperature of the forward heat medium measured in step 1 matches the predetermined value of the constant temperature of the forward heat medium.
  • the control device 1 performs control so that the measured value of the forward heat medium temperature coincides with the determined value of the forward heat medium temperature of the determined heating capacity.
  • the control device 1 performs either one or both of the heat medium heat exchangers 2c and 2o.
  • the refrigerant outlet temperature on the outlet side is measured by the temperature sensors 2f and 2q, and a temperature difference between the measured value of the refrigerant outlet temperature and the measured value of the forward heat medium temperature measured by the temperature sensor 1a is obtained.
  • the temperature difference is compared to the stored temperature difference in the determined heating capacity. If there is a difference between the measured temperature difference and the stored temperature difference as a result of the comparison, the control device 1 changes the determined heating capacity so as to eliminate the difference.
  • the heat pump heating device it is based on the refrigerant outlet temperature that represents the total heating load more accurately than the aforementioned return heat medium temperature, and the refrigerant outlet temperature is scheduled with the determined heating capacity. By checking whether or not it becomes a certain value, it is possible to more accurately determine the excess or deficiency of the determined heating capacity than before.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

Un appareil de chauffage de type pompe à chaleur, dans lequel la capacité de chauffage d'un dispositif de chauffage (2) est commandée avec une plus grande précision selon la charge de chauffage. Un dispositif de commande (1) pour commander le dispositif de chauffage (2) : détermine la capacité de chauffage requise sur la base de la température extérieure, une température de chauffage définie et analogues ; entraîne un compresseur (2b) à fonctionner sur la base de la vitesse de rotation pour la capacité de chauffage réglée et commande une soupape de détente (2d) de sorte que la température de refoulement du compresseur (2b) atteigne une valeur prédéterminée ; et effectue une commande de telle sorte que la valeur de mesure de la température du support thermique sortant du support thermique délivré au terminal de chauffage est constante avec la valeur déterminée de température du support thermique pour la capacité de chauffage. Une fois qu'il a été déterminé que la valeur de mesure de la température du support thermique sortant est compatible avec la valeur déterminée de la température du support thermique sortant, le dispositif de commande (1) compare la valeur de mesure de température sortante du support de refroidissement de l'échangeur de chaleur de support thermique (2c) mesurée par un capteur de température (2f) avec une valeur stockée de température de sortie du support de refroidissement selon la capacité de chauffage déterminée ; et, si il existe une disparité entre la valeur mesurée et la valeur stockée, modifie la capacité de chauffage déterminée pour éliminer la disparité.
PCT/JP2013/054786 2012-03-19 2013-02-25 Appareil de chauffage de type pompe à chaleur WO2013140954A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012061754A JP5898537B2 (ja) 2012-03-19 2012-03-19 ヒートポンプ式暖房装置
JP2012-061754 2012-03-19

Publications (1)

Publication Number Publication Date
WO2013140954A1 true WO2013140954A1 (fr) 2013-09-26

Family

ID=49222417

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/054786 WO2013140954A1 (fr) 2012-03-19 2013-02-25 Appareil de chauffage de type pompe à chaleur

Country Status (2)

Country Link
JP (1) JP5898537B2 (fr)
WO (1) WO2013140954A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784402A1 (fr) * 2013-03-27 2014-10-01 Panasonic Corporation Chauffe-eau à pompe de chaleur
JP2015148426A (ja) * 2014-02-10 2015-08-20 サンデンホールディングス株式会社 ヒートポンプ式暖房装置
WO2017086870A1 (fr) * 2015-11-20 2017-05-26 Sens Geoenergy Storage Ab Système de pompe à chaleur et procédé de commande de système de pompe à chaleur
WO2017086872A1 (fr) * 2015-11-20 2017-05-26 Sens Geoenergy Storage Ab Système de pompe à chaleur et son procédé de commande
JP2018004130A (ja) * 2016-06-29 2018-01-11 三菱電機株式会社 温水熱源機
CN108139106A (zh) * 2015-10-26 2018-06-08 三菱电机株式会社 空气调节装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015183929A (ja) * 2014-03-24 2015-10-22 サンデンホールディングス株式会社 ヒートポンプ式暖房装置
CN105115031B (zh) * 2015-09-17 2018-06-29 沃逸新能源科技（江苏）有限公司 一种无声空调低温辐射控制模块
UA115842C2 (uk) * 2016-12-09 2017-12-26 Олександр Федорович Немчин Спосіб утилізації теплової енергії атмосферного повітря оточуючого середовища та пристрій для його здійснення
EP3779323B1 (fr) 2018-04-04 2023-02-22 Mitsubishi Electric Corporation Dispositif de commande de système de climatisation, unité externe, unité de relais, unité de source de chaleur et système de climatisation
CN111336707B (zh) * 2020-02-29 2021-09-03 同济大学 一种拓扑同胚循环的二氧化碳热泵供暖系统
CN111795423B (zh) * 2020-03-26 2021-09-03 同济大学 一种基于三流体换热器的二氧化碳热泵供暖系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005069612A (ja) * 2003-08-27 2005-03-17 Daikin Ind Ltd 暖房システム及び住宅
JP2006046703A (ja) * 2004-07-30 2006-02-16 Daikin Ind Ltd 床暖房装置
JP2008082653A (ja) * 2006-09-28 2008-04-10 Mitsubishi Electric Corp 給湯、冷温水空気調和装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005069612A (ja) * 2003-08-27 2005-03-17 Daikin Ind Ltd 暖房システム及び住宅
JP2006046703A (ja) * 2004-07-30 2006-02-16 Daikin Ind Ltd 床暖房装置
JP2008082653A (ja) * 2006-09-28 2008-04-10 Mitsubishi Electric Corp 給湯、冷温水空気調和装置

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784402A1 (fr) * 2013-03-27 2014-10-01 Panasonic Corporation Chauffe-eau à pompe de chaleur
JP2015148426A (ja) * 2014-02-10 2015-08-20 サンデンホールディングス株式会社 ヒートポンプ式暖房装置
CN108139106A (zh) * 2015-10-26 2018-06-08 三菱电机株式会社 空气调节装置
US10451305B2 (en) 2015-10-26 2019-10-22 Mitsubishi Electric Corporation Air-conditioning apparatus
WO2017086872A1 (fr) * 2015-11-20 2017-05-26 Sens Geoenergy Storage Ab Système de pompe à chaleur et son procédé de commande
WO2017086869A1 (fr) * 2015-11-20 2017-05-26 Sens Geoenergy Storage Ab Système de pompe à chaleur et procédé de commande de système de pompe à chaleur
US20180328598A1 (en) * 2015-11-20 2018-11-15 Sens Geoenergy Storage Ab Heat pump system and method for controlling a heat pump system
EP3377822A4 (fr) * 2015-11-20 2018-12-12 SENS Geoenergy Storage AB Système de pompe à chaleur et son procédé de commande
SE541234C2 (en) * 2015-11-20 2019-05-07 Sens Geoenergy Storage Ab Methods and systems for heat pumping
WO2017086870A1 (fr) * 2015-11-20 2017-05-26 Sens Geoenergy Storage Ab Système de pompe à chaleur et procédé de commande de système de pompe à chaleur
US11067296B2 (en) 2015-11-20 2021-07-20 Sens Geoenergy Storage Ab Heat pump system and method for controlling a heat pump system
US11209174B2 (en) 2015-11-20 2021-12-28 Sens Geoenergy Storage Ab Heat pump system and method for controlling a heat pump system
US11215369B2 (en) 2015-11-20 2022-01-04 Sens Geoenergy Storage Ab Heat pump system and method for controlling a heat pump system
JP2018004130A (ja) * 2016-06-29 2018-01-11 三菱電機株式会社 温水熱源機

Also Published As

Publication number Publication date
JP5898537B2 (ja) 2016-04-06
JP2013194975A (ja) 2013-09-30

Similar Documents

Publication Publication Date Title
JP5898537B2 (ja) ヒートポンプ式暖房装置
CN101981389B (zh) 制冷装置
JP4538919B2 (ja) 室内マルチ空気調和機
JP4920654B2 (ja) 空気調和装置
KR101805334B1 (ko) 열원 장치
JP5470810B2 (ja) 床暖房装置
JP6609697B2 (ja) 熱源システム、及び熱源システムの制御方法
JP6972368B2 (ja) 空気調和装置の制御装置、室外機、中継機、熱源機および空気調和装置
US11137164B2 (en) Control systems and methods for heat pump systems
JP6607147B2 (ja) ヒートポンプ装置
JP5215039B2 (ja) 温水暖房装置の制御方法
CA2964528A1 (fr) Systeme de distribution d'air
JP2021071250A (ja) ヒートポンプ式温水暖房システム
KR102130437B1 (ko) 공기조화 시스템
JP6896089B2 (ja) 空気調和システム
JP5254660B2 (ja) 温水暖房装置の制御方法
JP6545378B2 (ja) 空調システム及び中継機
WO2021214931A1 (fr) Système de climatisation et procédé de commande
NL2025130B1 (en) Climate control unit and system comprising the same
JP2021071248A (ja) ヒートポンプ式温水暖房システム
JP6978242B2 (ja) 冷媒回路装置
WO2019138473A1 (fr) Système de commande de climatisation et procédé de commande de climatisation
JP2021071247A (ja) ヒートポンプ式温水暖房システム
JP7274896B2 (ja) 暖房システム
JP7287809B2 (ja) 暖房システム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13764618

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13764618

Country of ref document: EP

Kind code of ref document: A1