WO2010134153A1 - ヒートポンプ装置及び調整弁制御方法 - Google Patents
ヒートポンプ装置及び調整弁制御方法 Download PDFInfo
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- WO2010134153A1 WO2010134153A1 PCT/JP2009/059138 JP2009059138W WO2010134153A1 WO 2010134153 A1 WO2010134153 A1 WO 2010134153A1 JP 2009059138 W JP2009059138 W JP 2009059138W WO 2010134153 A1 WO2010134153 A1 WO 2010134153A1
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- 238000000034 method Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 281
- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 238000005057 refrigeration Methods 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000001419 dependent effect Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 abstract description 53
- 238000001514 detection method Methods 0.000 abstract description 46
- 238000010438 heat treatment Methods 0.000 description 17
- 238000001816 cooling Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007958 sleep Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010726 refrigerant oil Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Classifications
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- 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
- F25B30/02—Heat pumps of the compression type
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- 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
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- 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
- F24H15/305—Control of valves
-
- 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
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- 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
- F25B31/00—Compressor arrangements
- F25B31/006—Cooling of compressor or motor
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- 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
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type 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
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
- F24H4/04—Storage heaters
-
- 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
- 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
-
- 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
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
Definitions
- This invention relates to a heat pump hot water supply outdoor unit.
- a compressor of a refrigeration cycle may be cooled because it becomes hot during operation (Patent Document 1).
- it may be desired to heat the compressor (Patent Document 2).
- a water jacket connected to a flow path branched from a water circuit is wound around the compressor.
- the temperature of the water jacket is controlled by measuring the outlet temperature of the water jacket with a temperature sensor (for example, Patent Document 1).
- heating In addition, there is a technique in which a heating unit that uses hot water is provided in the lower part of the compressor, and the flow rate of the hot water to the heating unit is controlled based on the temperature detected by a temperature sensor that detects the outer temperature of the compressor (for example, Patent Document 2). ).
- JP 2002-372318 A page 5, FIG. 5
- Japanese Unexamined Patent Publication No. 2007-298254 page 11, FIG. 1
- Patent Document 1 the amount of water flowing into a water jacket used in a compressor of a heat pump hot water supply outdoor unit is controlled by the temperature detected by a temperature sensor provided at the outlet of the water jacket. For this reason, the subject that the temperature control of the compressor outer shell according to both the temperature of the water which flows in into a water jacket, and the temperature of a compressor outer shell cannot be performed occurred.
- An object of the present invention is to provide a heat pump type hot water supply outdoor unit capable of controlling the temperature of the compressor outer wall according to the water temperature or the compressor temperature.
- Another object of the present invention is to provide a heat pump type hot water supply outdoor unit having a switching function for switching between heating and cooling of the compressor shell.
- the heat pump device of this invention is A refrigeration cycle comprising a compressor, a condenser, an expansion valve, and an evaporator; Branching in parallel to the main circuit from the branch on the inflow side and the branch on the outflow side of the main circuit that flows into the condenser from the hot water storage tank and flows out of the condenser and returns to the hot water storage tank A water jacket that is connected in the middle of the branch path and allows water that has flowed out of the hot water storage tank to pass therethrough, and is disposed on the outer shell of the compressor, An adjustment valve that is connected in the middle of the branch path between the branch on the inflow side and the water jacket, and adjusts the flow rate of water according to the input control signal; A first temperature sensor for detecting a temperature of the outer shell of the compressor; A second temperature sensor installed upstream of the regulating valve and detecting the temperature of water flowing out of the hot water storage tank; Control for generating the control signal for controlling the regulating valve based on the temperature detected by the first temperature sensor and the temperature detected
- the second temperature sensor is In the vicinity of the branch on the inflow side; Near the branch path between the branch on the inflow side and the regulating valve; Upstream of the regulating valve and in the vicinity of the regulating valve; It is characterized by being installed at any one of the positions.
- the heat pump device further includes: A third temperature sensor for detecting the temperature of the outside air;
- the controller is The control signal is generated based on the detected temperature of the first temperature sensor, the detected temperature of the second temperature sensor, and the detected temperature of the third temperature sensor, and the generated control signal is sent to the adjustment valve. It is characterized by outputting.
- the controller is Based on the temperature detected by the third temperature sensor, an outside air temperature increase rate indicating an increase rate of the outside air temperature is calculated, and the temperature increase rate of the outer shell of the compressor is calculated based on the temperature detected by the first temperature sensor.
- a temperature rise rate dependent control signal that is a second control signal for controlling the regulating valve is generated based on the magnitude relationship between the outside temperature rise rate and the outline temperature rise rate. It is characterized by that.
- the regulating valve control method of the present invention comprises: A refrigeration cycle comprising a compressor, a condenser, an expansion valve, and an evaporator; Branching in parallel to the main circuit from the branch on the inflow side and the branch on the outflow side of the main circuit that flows into the condenser from the hot water storage tank and flows out of the condenser and returns to the hot water storage tank A water jacket that is connected in the middle of the branch path and allows water that has flowed out of the hot water storage tank to pass therethrough, and is disposed on the outer shell of the compressor, An adjustment valve that is connected in the middle of the branch path between the branch on the inflow side and the water jacket, and adjusts the flow rate of water by receiving control; A first temperature sensor for detecting a temperature of the outer shell of the compressor; A heat pump device provided upstream of the regulating valve and comprising a second temperature sensor for detecting the temperature of water flowing out of the hot water storage tank; The control unit The adjustment valve is controlled based on a temperature detected by the first temperature
- a heat pump hot water supply outdoor unit that can control the temperature of the compressor according to the water temperature of the water circuit and the temperature of the compressor.
- FIG. 1 is a configuration diagram of a heat pump hot water supply outdoor unit 1a according to Embodiment 1.
- FIG. FIG. 2 is a hardware configuration diagram of a control device 20a according to the first embodiment.
- FIG. 6 is a diagram illustrating control by the control device 20a in the first embodiment.
- 5 is a flowchart for explaining heating control of the compressor 2 by the control device 20a in the first embodiment.
- 6 is a flowchart for explaining cooling control of the compressor 2 by the control device 20a in the first embodiment.
- FIG. 3 is a diagram showing an arrangement of water temperature sensors in the first embodiment.
- FIG. 1 is a configuration diagram of a heat pump hot water supply outdoor unit 1a (heat pump device) in the first embodiment.
- a water-refrigerant heat exchanger 3 condenser
- an expansion valve 4 and an air heat exchanger 5 (evaporator) are connected from the discharge side of the compressor 2. Then, it is connected to the suction side of the compressor 2.
- the compressor 2, the water-refrigerant heat exchanger 3, the expansion valve 4, and the air heat exchanger 5 constitute a refrigeration cycle.
- the water circuit side through which the circulation pump 40 circulates water constitutes a main water circuit 7 (main circuit) that returns from the hot water storage tank 30 to the hot water storage tank 30 via the water-refrigerant heat exchanger 3. That is, the main water circuit 7 flows into the water-refrigerant heat exchanger 3 from the hot water storage tank 30 and flows out of the water-refrigerant heat exchanger 3 to return to the hot water storage tank 30.
- the branch water circuit 8 (branch path) is connected to the main water circuit 7 in parallel.
- the branch water circuit 8 branches from the main water circuit 7 before flowing into the water-refrigerant heat exchanger 3 from the main water circuit 7. That is, the branch water circuit 8 branches in parallel to the main water circuit 7 from the branch A on the inflow side and the branch B on the outflow side with respect to the water-refrigerant heat exchanger 3.
- the branch water circuit 8 is branched from the main water circuit 7 at the branch A before flowing into the water-refrigerant heat exchanger 3, and the water flow valve 9 and the water jacket 10 are connected to the branch water circuit 8 and flows out from the water-refrigerant heat exchanger 3. It merges into the later main water circuit 7 at branch B.
- the heat pump hot water supply outdoor unit 1a includes a compressor 2, a water-refrigerant heat exchanger 3, an expansion valve 4, and an air heat exchanger 5, a water flow valve 9 (regulating valve), and a water jacket 10. And an outer shell temperature detection sensor 6 (first sensor), a water temperature sensor 11 (second sensor), and a control device 20a.
- the water jacket 10 is connected in the middle of the branch water circuit 8, and is disposed outside the compressor 2.
- the water jacket 10 allows water flowing from the hot water storage tank 30 to pass through a water flow path formed inside.
- the water flow valve 9 is connected in the middle of the branch water circuit 8 between the branch A on the inflow side and the water jacket 10, and adjusts the flow rate of water according to a control signal input from the control device 20a.
- the outer temperature detection sensor 6 detects the outer temperature of the compressor 2.
- the water temperature sensor 11 is installed upstream of the water flow valve 9 and before the main water circuit 7 flows into the water-refrigerant heat exchanger 3, and the water (water-refrigerant) discharged from the hot water storage tank 30.
- FIG. 1 shows a case where the water temperature sensor 11 is installed in the vicinity of the branch A on the inflow side to the water-refrigerant heat exchanger 3.
- the control device 20a generates a control signal for controlling the water flow valve 9 based on the detected temperature of the outer temperature detection sensor 6 and the detected temperature of the water temperature sensor 11, and this control signal is used as the water flow valve 9 Output to.
- FIG. 2 is a diagram illustrating a hardware configuration of the control device 20a.
- the control device 20a includes a CPU 810 (Central Processing Unit) that executes a program.
- the CPU 810 is connected to a ROM (Read Only Memory) 811, a RAM (Random Access Memory) 812, and an I / F (InterFace) unit 816 via the bus 825, and controls these hardware devices.
- ROM Read Only Memory
- RAM Random Access Memory
- I / F InterFace
- the ROM 811 is an example of a nonvolatile memory.
- the ROM 811 stores a program for executing the function of the control device 20a and set values T 1 and T 2 described later.
- the program stored in the ROM 811 is read and executed by the CPU 810.
- the RAM 812 is an example of a volatile memory. In the RAM 812, the detected temperature from the outer temperature detection sensor 6 and the water temperature sensor 11, the control signal transmitted to the water flow valve 9, the “determination result”, “calculation result”, “generation result”, “processing result” by the CPU 810. ", Data, signal values, variable values, parameters, and the like are stored.
- the ROM 811 and RAM 812 are examples of a storage device or a storage unit.
- the I / F unit 816 is an example of a communication unit.
- the I / F unit 816 is connected to the water flow valve 9, the outer shell temperature detection sensor 6, the water temperature sensor 11, and the like.
- the high-temperature refrigerant 51 discharged from the compressor 2 flows into the water-refrigerant heat exchanger 3.
- the high-temperature refrigerant 51 heats the low-temperature water 61 of the main water circuit 7 and then returns to the suction side of the compressor 2 through the expansion valve 4 and the air heat exchanger 5 as the low-temperature refrigerant 52.
- the low-temperature water 61 flowing from the hot water storage tank 30 by the circulation pump 40 flows into the water-refrigerant heat exchanger 3, and heat is exchanged with the high-temperature refrigerant 51.
- the hot water 62 having a high temperature is returned to the hot water storage tank 30.
- the outline of the basic operation of the heat pump hot water supply outdoor unit 1a is as follows.
- the heat loss from the compressor 2 can be effectively recovered by absorbing the heat loss from the compressor 2 and returning it to the main water circuit 7. Moreover, the abnormal overheating prevention of the compressor 2 is realizable without a special protective device.
- control device 200a does not apply (Equation 1) and (Equation 2) as they are.
- the detection temperature of the sensor is T (6) ⁇ T (11) in the above (Formula 1) Also satisfy the long set value above T 1 with the detection temperature of the outer temperature detection sensor 6, not open water flow valve 9 even in the (more when the compressor does not want to heat with water) as good. That is, when there is a detected temperature of the outer temperature detection sensor 6 temperatures T 1 or more, That is, T 1 ⁇ T (6) ⁇ T (11) (Formula 3) In this case, it is not necessary to warm the compressor 2 and the water flow valve 9 is not opened.
- T (6)> T (11) Also satisfy the long set value T 2 or less there is a detected temperature of the outer temperature detection sensor 6, not open water flow valve 9 even in the (more when the compressor does not want to cool with water) as Good.
- FIG. 3 is a diagram schematically illustrating the cases of (Expression 3) and (Expression 4). The arrow indicates the temperature T.
- Fig.3 (a) has shown (Formula 3). If namely T (6) is a set value above T 1, T (6) ⁇ T (11) Even if is established, the control device 20a does not open the water flow valve 9.
- FIG. 3B shows (Equation 4). If namely T (6) set value T 2 or less, T (6)> T (11) Even if is established, the control device 20a does not open the water flow valve 9.
- FIG. 3C is a schematic diagram when the control device 20a performs control reflecting (Equation 3) and (Equation 4).
- T 1 ⁇ T (6) ⁇ T 2 range The control device 20a has T (6) as T 1 ⁇ T (6) ⁇ T 2 In this range, the water flow valve 9 is kept closed regardless of the value of T (11).
- T (6)> T 2 In this case, the compressor 2 needs to be cooled. Therefore, T (6)> T (11), When is established, the control device 20a performs control to open the water flow valve 9. Also, T (6) ⁇ T (11) In this case, since the compressor 2 cannot be cooled with a water flow, the control for closing the water flow valve 9 is performed.
- FIG. 4 is a flowchart for heating the compressor 2 to prevent the refrigerant from stagnation when the operation of the compressor 2 is started.
- FIG. 5 is a flowchart for cooling the compressor 2 to prevent overheating of the compressor 2 during operation of the compressor 2. 4 and 5, it is assumed that the water flow valve 9 is closed before the control by the control device 200a is started.
- FIG. 4 (In case of heating compressor 2) First, with reference to FIG. 4, the case where the compressor 2 is heated by the control device 200a when the operation of the compressor 2 is started will be described.
- the outline of FIG. 4 is as follows.
- the detected temperature T of the shell temperature detection sensor 6 (6) (hereinafter, also referred to as outer temperature) or is lower than the set value T 1 (if the compressor 2 is cold) is provided with a further outer temperature T (6) water temperature
- a detection temperature T (11) of the sensor 11 hereinafter also referred to as a water temperature detection temperature) is compared. If the detected water temperature T (11) is higher than the outer shell temperature T (6), it can be heated, so the water flow valve 9 is opened and the compressor 2 is heated. Then, when the outer temperature T (6) exceeds the “set value T 1 + ⁇ ”, the water flow valve 9 is closed (heating is stopped).
- the flowchart of FIG. 4 will be described.
- the control device 200a compares the outer temperature T (6) with a set value T 1 (for example, 5 ° C.). Outer temperature T (6) ⁇ set value T 1 In this case, since heating is not necessary, the control device 200a maintains the closed state of the water flow valve 9 (S109). on the other hand, Outer temperature T (6) ⁇ set value T 1 In the case of (2), although heating is required, the controller 200a compares the outer shell temperature T (6) with the water temperature detection temperature T (11) in order to determine whether or not heating is possible by the water flow (S104). Since heating cannot be performed when the outer shell temperature T (6) ⁇ the water temperature detection temperature T (11), the control device 200a maintains the water flow valve 9 in the closed state (S110). on the other hand, Outer temperature T (6) ⁇ Water temperature detection temperature T (11) In this case, since heating is possible, the control device 200a executes control to open the water flow valve 9 (S105).
- T 1 for example, 5 ° C.
- the control device 200a compares the outer temperature T (6) with a set value T 2 (for example, 90 ° C.). Outer temperature T (6) ⁇ set value T 2 In this case, since cooling is not required, the control device 200a maintains the water flow valve 9 closed (S209). on the other hand, Outer temperature T (6)> set value T 2 In the case of (2), although cooling is required, the control device 200a compares the outer shell temperature T (6) with the detected water temperature T (11) in order to determine whether or not cooling is possible by the water flow (S204). Outer temperature T (6) ⁇ Water temperature detection temperature T (11) In this case, since the cooling cannot be performed, the control device 200a keeps the water flow valve 9 closed (S210). on the other hand, Outer T (6)> Water temperature detection temperature T (11) In this case, since the cooling is possible, the control device 200a executes control to open the water flow valve 9 (S205).
- T 2 for example, 90 ° C.
- FIG. 6 is a diagram illustrating the installation position of the water temperature sensor 11.
- FIG. 1 shows the case where the water temperature sensor 11 is installed in the vicinity of the branch A on the inflow side to the water-refrigerant heat exchanger 3, the water temperature sensor 11 is not yet flowed into the water-refrigerant heat exchanger 3. What is necessary is just to detect the water temperature for water. Therefore, as shown as the water temperature sensor 11-1 in FIG. 6, the water temperature sensor is installed in the vicinity of the branch water circuit 8 between the branch A on the inflow side with respect to the water-refrigerant heat exchanger 3 and the water flow valve 9. May be. Alternatively, as shown as the water temperature sensor 11-2, the water temperature sensor may be installed upstream of the water flow valve 9 and in the vicinity of the water flow valve 9 in the branch water circuit 8.
- the control device 20a determines the control of the water flow valve 9 for flowing water through the water jacket 10 based on the detected temperatures of the outer shell temperature detection sensor 6 and the water temperature sensor 11. For this reason, according to the compressor 2 (temperature of the compressor 2) and water temperature, the waste heat loss from the compressor 2 is collect
- the outer shell temperature detection sensor 6 is a sensor that originally exists for refrigerant control
- the water temperature sensor 11 is also a sensor that originally exists for hot water temperature control. Therefore, the above-described effects can be obtained without the trouble of adding sensors and the cost increase associated with adding sensors.
- FIG. 7 With reference to FIG. 7, the heat pump type hot water supply outdoor unit 1b of the second embodiment will be described.
- the heat pump hot water supply outdoor unit 1b further includes an external air temperature sensor 12 (third temperature sensor) for detecting the external air temperature in contrast to the heat pump hot water supply outdoor unit 1a of the first embodiment.
- an external air temperature sensor 12 third temperature sensor
- control device 20a determines the control of the water flow valve 9 from the detection temperature of the outer temperature detection sensor 6 and the detection temperature of the water temperature sensor 11. In the second embodiment, the control device 20b also uses the detected temperature of the outside air temperature sensor 12.
- FIG. 7 is a configuration diagram of the heat pump hot water supply outdoor unit 1b according to the second embodiment.
- FIG. 7 differs from FIG. 1 of the first embodiment in that an outside air temperature sensor 12 is arranged.
- the function of the control device 20b is slightly different from that of the control device 20a.
- the control device 20b controls the water flow valve 9 for flowing water through the water jacket 10 according to three types of temperatures: a detection temperature of the outer temperature detection sensor 6, a detection temperature of the water temperature sensor 11, and a detection temperature of the outside air temperature sensor 12. The determination is based on the detected temperature. That is, the control device 20 b generates a control signal for the water flow valve 9 based on the detected temperatures of the three types of sensors and outputs the control signal to the water flow valve 9.
- the control device 20b In addition to the generation of the control signal in the first embodiment, the control device 20b generates the following control signal (temperature rise rate dependent control signal) and outputs it to the water flow valve 9. That is, the control device 20b determines that the increase rate of the outside temperature per unit time (detected by the outside temperature sensor 12) is the increase rate per unit time of the outside temperature of the compressor 2 (detected by the outside temperature detection sensor 6). If it is faster, it is determined that the amount of refrigerant stagnation in the compressor 2 is large, and a control signal for instructing the OPEN to the water flow valve 9 is generated and output to the water flow valve 9. That is, in this case, not the magnitude of the detected temperature, but the rising speed (speed) of each detected temperature is set as a determination target.
- the control signal temperature rise rate dependent control signal
- This control makes it possible to provide a heat pump hot water supply outdoor unit that is more reliable. Since the outside air temperature sensor 12 is also a sensor that originally exists for refrigerant control, the above-described effects can be obtained without increasing the cost of the sensor or adding the sensor.
- the stagnation of the refrigerant occurs only when the compressor 2 is stopped.
- seizure or the like occurs due to poor lubrication of the sliding portion of the compressor 2.
- the refrigerant in the refrigerant circuit condenses in the coolest part of the refrigerant circuit and collects as a liquid (sleeps).
- the outer temperature of the compressor 2 is low, it is certain that the refrigerant easily stagnates into the compressor 2, but strictly speaking, it is not an absolute value of the compressor outer temperature.
- the control device 20b first compares the temperature change width per unit time between the outside air temperature and the compressor outer temperature. When the outside air temperature has a larger variation width in the direction of temperature rise than the outer temperature of the compressor 2, the control device 20 b That is, If the temperature rise rate of the outside air temperature is greater than the temperature rise rate of the compressor outer shell, it can be determined that the refrigerant 2 is likely to stagnate in the compressor 2 (the region to be heated). carry out.
- T (6) the detection temperature T (6) of the outer temperature detection sensor 6 and the detection temperature T (11) of the water temperature sensor 11
- the control device 20b performs control for closing the water flow valve 9 in this case.
- the water temperature in the hot water storage tank 30 may be affected (temperature decrease) by flowing water through the water jacket 10, and in order to flow water through the water jacket 10 (to its channel resistance) Since it may be necessary to increase the output of the circulation pump 40 (to overcome), it is conceivable that the power consumption of the entire system increases.
- the outside air temperature sensor 12 it is possible to determine whether or not the refrigerant 2 is likely to stagnate in the compressor 2 as compared with the case where two sensors of the outer shell temperature detection sensor 6 and the water temperature sensor 11 are used. Can be improved. Thereby, while being able to suppress the influence on the water temperature in the hot water storage tank 30, the increase in the power consumption of the circulation pump 40 can be suppressed.
- the water flow valve 9 has been described as a stop valve that performs “close / open”, but this is an example.
- the function of the water flow valve 9 may be a function capable of adjusting the flow rate of water in multiple stages.
- the control device 20a (or the control device 20b) generates and outputs a control signal corresponding to multiple stages based on the detected temperature of the sensor. What control signal is generated is programmed in advance.
- the function of the water flow valve 9 may be a function capable of continuously adjusting the flow rate of water. Also in that case, the control device 20a (or the control device 20b) generates and outputs a control signal corresponding to the continuous adjustment based on the detected temperature of the sensor. What control signal is generated is programmed in advance.
- this heat pump device can also be grasped as a regulating valve control method in which the control device controls the water flow valve (regulating valve). That is, A refrigeration cycle comprising a compressor, a condenser, an expansion valve, and an evaporator; Water jacket 10; Connected in the middle of the branch path between the branch on the inflow side and the water jacket, and according to the input control signal, a water flow valve 9; Outer temperature detection sensor 6; For a heat pump device equipped with a water temperature sensor 11, Based on the detected temperature of the outer shell temperature detection sensor 6 and the detected temperature of the water temperature sensor 11, the control device can be grasped as an adjustment valve control method for controlling the water flow rate valve 9.
- 1a, 1b Heat pump hot water supply outdoor unit, 2 compressor, 3 water-refrigerant heat exchanger, 4 expansion valve, 5 air heat exchanger, 6 outer temperature detection sensor, 7 main water circuit, 8 branch water circuit, 9 water flow rate Valve, 10 water jacket, 11 water temperature sensor, 12 outside air temperature sensor, 20a, 20b control device, 30 hot water storage tank, 40 circulation pump.
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Abstract
Description
従来のヒートポンプ式給湯室外機では、圧縮機に、水回路から分岐する流路に接続されたウォータージャケットが巻き付けられている。そして温度センサによってウォータージャケットの出口温度を測定することにより、ウォータージャケットは温度制御される(例えば、特許文献1)。
また、圧縮機の下部に温水を使用する加熱部を設け、圧縮機の外郭温度を検出する温度センサの検出温度に基づき加熱部への温水の流量を制御する技術もある(例えば、特許文献2)。
圧縮機、凝縮器、膨張弁、及び蒸発器を備えた冷凍サイクルと、
貯湯タンクから前記凝縮器に流入すると共に前記凝縮器から流出して前記貯湯タンクに戻る主回路の前記凝縮器に対する流入側の分岐と流出側の分岐とから前記主回路に対して並列に分岐する分岐経路の途中に接続されて前記貯湯タンクから流出された水を通過させると共に、前記圧縮機の外郭に配置されたウォータージャケットと、
前記流入側の前記分岐と前記ウォータージャケットとの間の前記分岐経路の途中に接続され、入力された制御信号に従って水の流量を調整する調整弁と、
前記圧縮機の前記外郭の温度を検出する第1温度センサと、
前記調整弁よりも上流に設置され、前記貯湯タンクから流出された水の温度を検出する第2温度センサと、
前記第1温度センサの検出温度と、前記第2温度センサの検出温度とに基づいて、前記調整弁を制御する前記制御信号を生成し、生成された前記制御信号を前記調整弁に出力する制御装置と
を備えたことを特徴とする。
前記流入側の前記分岐の近傍と、
前記流入側の前記分岐と前記調整弁との間において前記分岐経路の近傍と、
前記調整弁よりも上流かつ前記調整弁の近傍と、
のうちのいずれかの位置に設置されたことを特徴とする。
外気の温度を検出する第3温度センサを備え、
前記制御装置は、
前記第1温度センサの検出温度と、前記第2温度センサの検出温度と、前記第3温度センサの検出温度とに基づいて、前記制御信号を生成し、生成した前記制御信号を前記調整弁に出力することを特徴とする。
前記第3温度センサの検出温度に基づいて外気温度の上昇速度を示す外気温上昇速度を算出すると共に、前記第1温度センサの検出温度に基づいて前記圧縮機の前記外郭の温度の上昇速度を示す外郭温上昇速度を算出し、前記外気温上昇速度と前記外郭温上昇速度との大小関係に基づいて、前記調整弁を制御する第2の制御信号である温度上昇速度依存制御信号を生成することを特徴とする。
圧縮機、凝縮器、膨張弁、及び蒸発器を備えた冷凍サイクルと、
貯湯タンクから前記凝縮器に流入すると共に前記凝縮器から流出して前記貯湯タンクに戻る主回路の前記凝縮器に対する流入側の分岐と流出側の分岐とから前記主回路に対して並列に分岐する分岐経路の途中に接続されて前記貯湯タンクから流出された水を通過させると共に、前記圧縮機の外郭に配置されたウォータージャケットと、
前記流入側の前記分岐と前記ウォータージャケットとの間の前記分岐経路の途中に接続され、制御を受けることにより水の流量を調整する調整弁と、
前記圧縮機の前記外郭の温度を検出する第1温度センサと、
前記調整弁よりも上流に設置され、前記貯湯タンクから流出された水の温度を検出する第2温度センサと
を備えたヒートポンプ装置に対して、
制御装置が、
前記第1温度センサの検出温度と、前記第2温度センサの検出温度とに基づいて、前記調整弁を制御することを特徴とする。
図1は、実施の形態1におけるヒートポンプ式給湯室外機1a(ヒートポンプ装置)の構成図である。
図1に示すように、冷媒が循環する冷媒回路側は、圧縮機2の吐出側から、水-冷媒熱交換器3(凝縮器)、膨張弁4、空気熱交換器5(蒸発器)を経て、圧縮機2の吸入側に接続される。圧縮機2、水-冷媒熱交換器3、膨張弁4、及び空気熱交換器5は冷凍サイクルを構成する。
循環ポンプ40が水を循環させる水回路側は、貯湯タンク30から水-冷媒熱交換器3を経て貯湯タンク30に戻る主水回路7(主回路)を構成している。すなわち、主水回路7は、貯湯タンク30から水-冷媒熱交換器3に流入すると共に水-冷媒熱交換器3から流出して貯湯タンク30に戻る。
図1に示すように、分岐水回路8(分岐経路)が、主水回路7に並列に接続している。分岐水回路8は、主水回路7から水-冷媒熱交換器3に流入する前で主水回路7から分岐している。すなわち、分岐水回路8は、水-冷媒熱交換器3に対する流入側の分岐Aと流出側の分岐Bとから主水回路7に対して並列に分岐している。分岐水回路8は、水-冷媒熱交換器3に流入する前の分岐Aにおいて主水回路7から分岐され、水流量弁9、ウォータージャケット10が接続され、水-冷媒熱交換器3から流出後の主水回路7に分岐Bで合流する。
ヒートポンプ式給湯室外機1aは、圧縮機2、水-冷媒熱交換器3、膨張弁4、及び空気熱交換器5を備えた冷凍サイクルと、水流量弁9(調整弁)と、ウォータージャケット10と、外郭温度検出センサ6(第1センサ)と、水温センサ11(第2センサ)と、制御装置20aとを備えている。
(2)水流量弁9は、流入側の分岐Aとウォータージャケット10との間の分岐水回路8の途中に接続され、制御装置20aから入力される制御信号に従って水の流量を調整する。
(3)外郭温度検出センサ6は、圧縮機2の外郭の温度を検出する。
(4)水温センサ11は、水流量弁9よりも上流、かつ、主水回路7が水-冷媒熱交換器3に流入する手前に設置され、貯湯タンク30から流出された水(水-冷媒熱交換器3への流入前の水)の温度を検出する。図1では、水温センサ11が、水-冷媒熱交換器3への流入側の分岐Aの近傍に設置された場合を示している。
(5)制御装置20aは、外郭温度検出センサ6の検出温度と、水温センサ11の検出温度とに基づいて、水流量弁9を制御する制御信号を生成し、この制御信号を水流量弁9に出力する。
図2は、制御装置20aのハードウェア構成を示す図である。図2において、制御装置20aは、プログラムを実行するCPU810(Central Processing Unit、中央処理装置)を備えている。CPU810は、バス825を介してROM(Read Only Memory)811、RAM(Random Access Memory)812、I/F(InterFace)部816と接続され、これらのハードウェアデバイスを制御する。
次に、図1を参照して、ヒートポンプ式給湯室外機1aの動作を説明する。
ヒートポンプ式給湯室外機1aでは、圧縮機2から吐出された高温冷媒51は、水-冷媒熱交換器3に流れ込む。そして、高温冷媒51は、主水回路7の低温水61に熱を与えた後、低温冷媒52として、膨張弁4、空気熱交換器5を通り、圧縮機2の吸入側に戻る。
水側の動きとしては、循環ポンプ40によって貯湯タンク30から流れてくる低温水61は、水-冷媒熱交換器3に流れ込み、高温冷媒51と熱交換をして昇温されて低温水61よりも温度の高い高温水62となって貯湯タンク30に戻る。
まず、制御装置20aは、外郭温度検出センサ6の検出温度T(6)よりも水温センサ11の検出温度T(11)のほうが高い場合、すなわち、
T(6)<T(11) (式1)
の場合は、水流量弁9を開けて、ウォータージャケット10に水を流す。水をウォータージャケット10に流すことで、圧縮機2を加熱する。すなわち、制御装置20aは、外郭温度検出センサ6及び水温センサ11の検出温度(検出信号)を入力し、T(6)とT(11)とを比較し、
T(6)<T(11)
と判定すると、水流量弁9を開けることを指示する制御信号を生成して、水流量弁9に出力する。
一方、外郭温度検出センサ6の検出温度T(6)よりも水温センサ11の検出温度T(11)が低い場合、すなわち、
T(6)>T(11) (式2)
の場合は、水流量弁9を開けて、ウォータージャケット10に水を流すことで、圧縮機2を冷却する。すなわち、制御装置20aは、外郭温度検出センサ6及び水温センサ11の検出温度を入力し、T(6)とT(11)とを比較し、
T(6)>T(11)
と判定すると、水流量弁9を開けることを指示する制御信号を生成して、水流量弁9に出力する。
T(6)=T(11)
のときにのみ水流量弁9を閉じる制御を実行し、それ以外は水流量弁9を開く制御を実行することになってしまう。
具体的には、例えば制御装置200aは以下のような制御を実行する。
上記(式1)の
T(6)<T(11)
を満足しても、外郭温度検出センサ6の検出温度がある設定値T1以上であれば、水流量弁9を開けない(これ以上圧縮機を水で加熱したくないとき)ようにしても良い。すなわち、外郭温度検出センサ6の検出温度がある温度T1以上のとき、
すなわち、
T1≦T(6)<T(11) (式3)
の場合は、圧縮機2を温める必要はないとして、水流量弁9を開けないこととする。
T(6)>T(11)
を満足しても、外郭温度検出センサ6の検出温度がある設定値T2以下であれば、水流量弁9を開けない(これ以上圧縮機を水で冷却したくないとき)ようにしてもよい。
T2≧T(6)>T(11) (式4)
の場合は、圧縮機2を冷却する必要はないとして、水流量弁9を開けないこととする。
T(6)<T(11)
が成立しても、制御装置20aは、水流量弁9を開けない。
また、図3(b)は(式4)を示している。すなわちT(6)が設定値T2以下であれば、
T(6)>T(11)
が成立しても、制御装置20aは、水流量弁9を開けない。
制御装置20aは、T(6)が、
T1≦T(6)≦T2
の範囲では、T(11)の値によらず、水流量弁9を閉じたままにする。
また、
T(6)<T1
の場合は、圧縮機2を加熱する必要がある。よって、この条件のもとでさらに、
T(6)<T(11)、
が成立する場合、制御装置20aは、水流量弁9を開く制御を行う。
また、
T(6)>T(11)
の場合は、水流で圧縮機2を加熱できないので、水流量弁9を閉じる制御を行う。
また、T(6)>T2
の場合は、圧縮機2を冷却する必要がある。
よって、さらに、
T(6)>T(11)、
が成立する場合、制御装置20aは、水流量弁9を開く制御を行う。
また、
T(6)<T(11)
の場合は、水流で圧縮機2を冷却できないので、水流量弁9を閉じる制御を行う。
図4は、圧縮機2の運転開始の際に、冷媒の寝込み防止のため、圧縮機2を加熱するフローチャートである。
図5は、圧縮機2の運転中において、圧縮機2の過熱防止のため、圧縮機2を冷却するフローチャートである。
図4、図5では、制御装置200aによる制御開始前は、水流量弁9が閉じているものとする。
まず図4を参照して、圧縮機2の運転開始の際に、制御装置200aにより圧縮機2を加熱する場合を説明する。図4の概要は次の様である。外郭温度検出センサ6の検出温度T(6)(以下、外郭温度ともいう)が設定値T1よりも低い場合(圧縮機2が冷えている場合)は、さらに外郭温度T(6)と水温センサ11の検出温度T(11)(以下、水温検出温度ともいう)とを比較する。外郭温度T(6)よりも水温検出温度T(11)の方が高ければ加熱できるので、水流量弁9を開いて圧縮機2を加熱する。そして、外郭温度T(6)が「設定値T1+α」を超えた時点で、水流量弁9を閉じる(加熱を中止する)。以下、図4のフローチャートを説明する。
外郭温度T(6)≧設定値T1
の場合は加熱不要であるため、制御装置200aは、水流量弁9を閉じた状態を維持する(S109)。
一方、
外郭温度T(6)<設定値T1
の場合は加熱が必要であるが水流によって加熱可能かどうかを判定するため、制御装置200aは、外郭温度T(6)と水温検出温度T(11)とを比較する(S104)。
外郭温度T(6)≧水温検出温度T(11)の場合は加熱できないので、制御装置200aは、水流量弁9を閉じ状態を維持する(S110)。
一方、
外郭温度T(6)<水温検出温度T(11)
の場合は加熱可能なので、制御装置200aは水流量弁9を開く制御を実行する(S105)。
次に図5を参照して、圧縮機2の運転中において、制御装置200aにより圧縮機2を冷却する場合を説明する。図5の概要は次の様である。外郭温度T(6)が設定値T2よりも高い場合(圧縮機2が過熱状態)は、さらに外郭温度T(6)と水温センサ11の水温検出温度T(11)とを比較する。外郭温度T(6)よりも水温検出温度T(11)の方が低ければ冷却できるので、水流量弁9を開いて圧縮機2を冷却する。そして、外郭温度T(6)が「設定値T2+β」未満となった時点で、水流量弁9を閉じる(冷却を中止する)。以下、図5のフローチャートを説明する。
外郭温度T(6)≦設定値T2
の場合は冷却不要であるため、制御装置200aは、水流量弁9を閉じた状態を維持する(S209)。
一方、
外郭温度T(6)>設定値T2
の場合は冷却が必要であるが水流によって冷却可能かどうかを判定するため、制御装置200aは、外郭温度T(6)と水温検出温度T(11)とを比較する(S204)。
外郭温度T(6)≦水温検出温度T(11)
の場合は冷却できないので、制御装置200aは、水流量弁9を閉じ状態を維持する(S210)。
一方、
外郭T(6)>水温検出温度T(11)
の場合は冷却可能なので、制御装置200aは水流量弁9を開く制御を実行する(S205)。
次に図6を参照して水温センサ11の設置位置を説明する。図6は、水温センサ11の設置位置を説明する図である。図1では、水温センサ11が水-冷媒熱交換器3への流入側の分岐Aの近傍に設置された場合を示したが、水温センサ11は、水-冷媒熱交換器3への流入前の水を対象とする水温を検出すればよい。よって、図6に水温センサ11-1として示したように、水温センサは、水-冷媒熱交換器3に対する流入側の分岐Aと水流量弁9との間において分岐水回路8の近傍に設置されてもよい。あるいは、水温センサ11-2として示したように、水温センサは、分岐水回路8において水流量弁9よりも上流かつ水流量弁9の近傍に設置されてもよい。
図7を参照して、実施の形態2のヒートポンプ式給湯室外機1bを説明する。実施の形態2は、実施の形態1のヒートポンプ式給湯室外機1aに対して、ヒートポンプ式給湯室外機1bが、さらに、外気温を検出する外気温センサ12(第3温度センサ)を備えた。
圧縮機2の停止中に冷媒が寝込んだ状態(冷媒で圧縮機内の潤滑油が希釈された状態)で、圧縮機2が動き出すと圧縮機2の摺動部の潤滑不良で焼き付き等を起こす。圧縮機停止中において冷媒回路内の冷媒は、冷媒回路内の最も温度が低い部分に凝縮して液体として集まろうとする(寝込み)。圧縮機2の外郭温度が低い場合、冷媒が圧縮機2に寝込み易いのは確かであるが、厳密には、圧縮機外郭温度の絶対値ではない。外気温度(周囲温度)の上昇スピードに比べて、冷媒回路各部の温度上昇スピードが遅い部品がその時点ではより冷たいので、そこに冷媒が集まろうとする。なお、これらの現象は、あくまでも圧縮機2の停止中の話である。一般的に圧縮機2は冷媒回路部品のなかでも熱容量が大きい(温まり難い)ため、冷媒は圧縮機2に集まる(寝込む)ことになる。従って、外気温センサ12を追加することで、外気温度と圧縮機2の外郭温度との各々の上昇スピードの差を検知できるようになると、圧縮機2に冷媒の寝込みが発生しやすい状態か否かを判定できるようになる。すなわち実施の形態2の場合は、制御装置20bは、まず、外気温度と圧縮機外郭温度の単位時間当たりの温度変化幅を比較する。制御装置20bは、外気温度の方が圧縮機2の外郭温度よりも温度上昇方向に変化幅が大きい場合は、
すなわち、
外気温度の温度上昇速度>圧縮機外郭の温度上昇速度
である場合には、圧縮機2に冷媒寝込みの可能性が高いと判断(加熱すべき領域)できるので、水流量弁9を開く制御を実施する。
ただし、外郭温度検出センサ6の検出温度T(6)と水温センサ11の検出温度T(11)とについて、
T(6)>T(11)
の場合、水流量弁9を開いても圧縮機2を加熱することはできないので、制御装置20bは、この場合は水流量弁9を閉じる制御を実施する。
圧縮機、凝縮器、膨張弁、及び蒸発器を備えた冷凍サイクルと、
ウォータージャケット10と、
前記流入側の前記分岐と前記ウォータージャケットとの間の前記分岐経路の途中に接続され、入力された制御信号に従って水流量弁9と、
外郭温度検出センサ6と、
水温センサ11と
を備えたヒートポンプ装置に対して、
外郭温度検出センサ6の検出温度と、水温センサ11の検出温度とに基づいて、制御装置が、水流量弁9を制御する調整弁制御方法として把握することができる。
Claims (5)
- 圧縮機、凝縮器、膨張弁、及び蒸発器を備えた冷凍サイクルと、
貯湯タンクから前記凝縮器に流入すると共に前記凝縮器から流出して前記貯湯タンクに戻る主回路の前記凝縮器に対する流入側の分岐と流出側の分岐とから前記主回路に対して並列に分岐する分岐経路の途中に接続されて前記貯湯タンクから流出された水を通過させると共に、前記圧縮機の外郭に配置されたウォータージャケットと、
前記流入側の前記分岐と前記ウォータージャケットとの間の前記分岐経路の途中に接続され、入力された制御信号に従って水の流量を調整する調整弁と、
前記圧縮機の前記外郭の温度を検出する第1温度センサと、
前記調整弁よりも上流に設置され、前記貯湯タンクから流出された水の温度を検出する第2温度センサと、
前記第1温度センサの検出温度と、前記第2温度センサの検出温度とに基づいて、前記調整弁を制御する前記制御信号を生成し、生成された前記制御信号を前記調整弁に出力する制御装置と
を備えたことを特徴とするヒートポンプ装置。 - 前記第2温度センサは、
前記流入側の前記分岐の近傍と、
前記流入側の前記分岐と前記調整弁との間において前記分岐経路の近傍と、
前記調整弁よりも上流かつ前記調整弁の近傍と、
のうちのいずれかの位置に設置されたことを特徴とする請求項1記載のヒートポンプ装置。 - 前記ヒートポンプ装置は、さらに、
外気の温度を検出する第3温度センサを備え、
前記制御装置は、
前記第1温度センサの検出温度と、前記第2温度センサの検出温度と、前記第3温度センサの検出温度とに基づいて、前記制御信号を生成し、生成した前記制御信号を前記調整弁に出力することを特徴とする請求項1または2のいずれかに記載のヒートポンプ装置。 - 前記制御装置は、
前記第3温度センサの検出温度に基づいて外気温度の上昇速度を示す外気温上昇速度を算出すると共に、前記第1温度センサの検出温度に基づいて前記圧縮機の前記外郭の温度の上昇速度を示す外郭温上昇速度を算出し、前記外気温上昇速度と前記外郭温上昇速度との大小関係に基づいて、前記調整弁を制御する第2の制御信号である温度上昇速度依存制御信号を生成することを特徴とする請求項3記載のヒートポンプ装置。 - 圧縮機、凝縮器、膨張弁、及び蒸発器を備えた冷凍サイクルと、
貯湯タンクから前記凝縮器に流入すると共に前記凝縮器から流出して前記貯湯タンクに戻る主回路の前記凝縮器に対する流入側の分岐と流出側の分岐とから前記主回路に対して並列に分岐する分岐経路の途中に接続されて前記貯湯タンクから流出された水を通過させると共に、前記圧縮機の外郭に配置されたウォータージャケットと、
前記流入側の前記分岐と前記ウォータージャケットとの間の前記分岐経路の途中に接続され、制御を受けることにより水の流量を調整する調整弁と、
前記圧縮機の前記外郭の温度を検出する第1温度センサと、
前記調整弁よりも上流に設置され、前記貯湯タンクから流出された水の温度を検出する第2温度センサと
を備えたヒートポンプ装置に対して、
制御装置が、
前記第1温度センサの検出温度と、前記第2温度センサの検出温度とに基づいて、前記調整弁を制御することを特徴とする調整弁制御方法。
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JP2011514234A JP5328902B2 (ja) | 2009-05-18 | 2009-05-18 | ヒートポンプ装置 |
EP09844887.1A EP2434231B1 (en) | 2009-05-18 | 2009-05-18 | Heat pump device and method of controlling regulation valve |
PCT/JP2009/059138 WO2010134153A1 (ja) | 2009-05-18 | 2009-05-18 | ヒートポンプ装置及び調整弁制御方法 |
US13/320,845 US20120055178A1 (en) | 2009-05-18 | 2009-05-18 | Heat pump apparatus and method for controlling regulating valve |
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EP2434231B1 (en) | 2019-06-26 |
EP2434231A4 (en) | 2016-10-19 |
US20120055178A1 (en) | 2012-03-08 |
JPWO2010134153A1 (ja) | 2012-11-08 |
EP2434231A1 (en) | 2012-03-28 |
JP5328902B2 (ja) | 2013-10-30 |
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