JP2019158173A - Heat pump type steam generation system - Google Patents

Abstract

To provide a heat pump type steam generation system capable of supplying a heat source even in a case where a heat pump is in a starting standby state.SOLUTION: A heat pump type steam generation system that uses a heat pump 20 to recover heat from the heat source hot water to refrigerant, transmits the recovered heat from the refrigerant to water to be heated to generate steam, and supplies the generated steam to a heat utilization facility 100, comprises: a water supply unit that supplies supply water to a heat source hot water tank 40; a heater 41 that adjusts the supply water in the heat source hot water tank 40 to a predetermined temperature to make the heat source hot water; an evaporator supply line L3 that supplies the heat source hot water to an evaporator 21 of the heat pump 20 to heat the refrigerant; and a heat source hot water external supply line L9 that can supply the heat source hot water to the heat utilization facility 100.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat pump type steam generation system capable of supplying a heat source even while the heat pump is on standby.

As one of the steam generators, there is a heat pump steam generator using a heat pump device. The heat pump type steam generator recovers waste heat from waste water (hot water) such as factory waste water or used cooling water to generate steam. In other words, the heat pump type steam generator causes the evaporator of the heat pump device to function as an exhaust heat recovery unit, where exhaust heat is recovered from the exhaust hot water into a refrigerant, and the recovered water is used to collect the heated water with a condenser. Since steam is generated by heating, there is an advantage that the running cost and CO ₂ emission amount can be reduced as compared with a combustion system steam generator that generates steam using boiler equipment or the like.

  For example, Patent Document 1 discloses a configuration in which hot water serving as a heat source is stored in a heat source water tank (hot water tank) and supplied from the hot water tank to an exhaust heat recovery device in a heat pump steam generator.

JP2013-210118A

  By the way, in the conventional heat pump type | formula steam generation system, the standby | waiting time after starting a heat pump until steam generation | occurrence | production is long on the performance of a heat pump. On the other hand, depending on the type of heat utilization equipment, a heat source may be required instead of steam immediately after the heat pump is activated.

  This invention is made | formed in view of the above, Comprising: It aims at providing the heat pump type | formula steam generation system which can supply a heat source even during the start waiting of a heat pump.

  In order to solve the above-described problems and achieve the object, a heat pump steam generation system according to the present invention recovers heat from a heat source hot water to a refrigerant using a heat pump, and converts the recovered heat from the refrigerant to heated water. A heat pump steam generation system that generates steam by transmitting and supplies the generated steam to a heat utilization facility, wherein a water supply unit that supplies supply water to a heat source hot water tank, and the supply water in the heat source hot water tank A temperature control unit that adjusts to a predetermined temperature to obtain the heat source hot water, an evaporator supply line that heats the refrigerant by supplying the heat source hot water to the evaporator of the heat pump, and the heat source hot water can be supplied to the heat utilization equipment And a heat source hot water external supply line.

  In the heat pump steam generation system according to the present invention, the heat source hot water is supplied to the heat utilization facility through the heat source warm water external supply line based on a request from the heat utilization facility side. And

  The heat pump steam generation system according to the present invention is characterized in that, in the above invention, a heated water supply line capable of supplying the heat source hot water as the heated water to a condenser of the heat pump is further provided.

  The heat pump steam generation system according to the present invention is characterized in that, in the above invention, at least a part of the generated steam can be supplied to the heat source hot water tank.

  The heat pump steam generation system according to the present invention further includes a heat pump output control unit for controlling the output of the heat pump in the above invention, and the heat pump output control unit per unit time to the heat source hot water tank. When the amount of water supply becomes equal to or greater than a predetermined value, the output of the heat pump is increased more than during normal operation.

  The heat pump steam generation system according to the present invention further includes a heat source warm water return line that enables at least a part of the heat source warm water discharged from the evaporator to be returned to the heat source warm water tank. It is characterized by that.

  Moreover, the heat pump steam generation system according to the present invention is the above invention, wherein a water level sensor that detects a water level in the heat source hot water tank, a temperature sensor that detects a temperature in the heat source hot water tank, and the water supply unit A water level control unit that controls a supply amount of supplied water, and a temperature control unit that controls the temperature adjustment unit so that the temperature detected by the temperature sensor becomes the predetermined temperature, the water level control unit When the temperature detected by the temperature sensor is within a predetermined range, the supply amount of the supplied water is controlled so that the water level detected by the water level sensor becomes a predetermined water level, and the temperature detected by the temperature sensor is When it is outside the predetermined range, the supply amount of the supply water is set to a fixed value based on the temperature detected by the temperature sensor.

  According to the present invention, since the heat source hot water can be supplied to the steam utilization facility, the heat utilization facility can quickly obtain the heat source even while the heat pump is on standby.

FIG. 1 is a diagram showing a configuration of a heat pump steam generation system according to an embodiment of the present invention. FIG. 2 is a flowchart showing a water level control processing procedure by the water level control unit shown in FIG. FIG. 3 is a diagram illustrating an example of the relationship between the water supply level and the water supply level. FIG. 4 is a flowchart showing a temperature control processing procedure by the temperature control unit shown in FIG. FIG. 5 is a diagram illustrating an example of the relationship of the heat pump output to the heat source hot water temperature. FIG. 6 is a flowchart showing a heat source hot water external supply control processing procedure by the heat source hot water external supply control unit shown in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

<Overall configuration>
FIG. 1 is a diagram showing a configuration of a heat pump steam generation system 10 according to an embodiment of the present invention. The heat pump steam generation system 10 is a system that recovers heat from heat source hot water and generates steam using the recovered heat, and the generated steam is sent to an external heat utilization facility 100 such as a cleaning facility.

  As shown in FIG. 1, a heat pump steam generation system 10 includes a heat pump 20 that is supplied as a heat source for generating steam, a gas-liquid separator 30 that is used when generating steam, a heat source hot water tank 40 that stores heat source hot water, and a control unit 60. Have The heat source hot water stored in the heat source hot water tank 40 is a heat source of the heat pump 20 via the evaporator supply line L3, heated water for generating steam via the heated water supply line L4, and a heat source hot water external supply line L9. As a heat source of the heat utilization equipment 100 via The control unit 60 performs operation control of the heat pump 20, water level control of the heat source hot water, temperature control of the heat source hot water, and the like.

  The heat pump 20 recovers heat from the heat source hot water and heats the refrigerant, the compressor 22 that compresses the refrigerant heated by the evaporator 21, and dissipates the refrigerant compressed by the compressor 22 to condense. This is a refrigeration cycle apparatus in which a condenser 23 and a throttle expander 24 that expands the refrigerant output from the condenser 23 are connected in an annular manner through a refrigerant pipe in order to circulate the refrigerant.

  The refrigerant which has been compressed by the compressor 22 and becomes high temperature and high pressure is supplied from the heated water supply line L4 and the heated water supply pump P2 in the condenser 23 and circulates in the circulation line L5 via the gas-liquid separator 30. It is cooled and condensed by exchanging heat with the water to be heated. The refrigerant output from the condenser 23 is throttled and expanded by a throttle expander 24, which is an electronic expansion valve, and absorbs heat from the heat source hot water supplied via the evaporator supply line L3 and the heat source hot water supply pump P1 in the evaporator 21. Then, it evaporates and returns to the compressor 22 again.

  The gas-liquid separator 30 is composed of a cylindrical container along the vertical direction, and is supplied with heated water from a heated water supply line L4 connected to a circulation line L5 connected to the lower wall. Stores water inside. The heated water in the heated water supply line L4 is the heat source hot water in the heat source hot water tank 40. The heated water may be water from a water supply source such as a water pipe or a water tank (not shown) instead of the heat source hot water.

  Connected to the upper end wall of the gas-liquid separator 30 is a steam delivery line L6 for delivering the generated water vapor to the external heat utilization equipment 100 side. The two-phase flow in which water and water vapor exiting the condenser 23 are mixed is introduced into the gas-liquid separator 30 from the circulation line L5 on the outlet side of the condenser 23, and the water vapor after the water is separated here. It is sent out to the steam delivery line L6.

  The steam delivered to the steam delivery line L6 is compressed and pressurized by the steam compressor P3. The pressurized steam is sent to the heat utilization equipment 100 side via the steam delivery line L7, and surplus steam is supplied to the heat source hot water tank 40 via the surplus steam line L8 by the relief valve V2. In addition, the vapor | steam supplied from the vapor | steam delivery line L7 is 120 degreeC, for example.

  Supply water (soft water) such as city water is supplied to the heat source hot water tank 40 via a water supply line L1 and a water supply valve V1, which are water supply units. In the heat source hot water tank 40, a heater 41 that functions as a temperature adjusting unit that heats the heat source hot water, a temperature sensor 52 that detects the temperature (heat source hot water temperature) in the heat source hot water tank 40, and a water level sensor that detects the water level of the heat source hot water. 50 is arranged. The heat source hot water discharged from the heat source hot water tank 40 is supplied to the evaporator 21 via the evaporator supply line L3, to the condenser 23 via the heated water supply line L4, and via the heat source hot water external supply line L9. And directly supplied to the heat utilization facility 100. The supply of the heat source hot water to the heat utilization facility 100 is performed when there is a request (external supply command) from the heat utilization facility 100 side.

  The heat source hot water supplied to the evaporator 21 and having absorbed heat is returned to the heat source hot water tank 40 via the heat source warm water return line L13. The heat source hot water supplied to and absorbed by the evaporator 21 may be discharged outside without returning to the heat source hot water tank 40. Further, as described above, surplus steam is supplied to the heat source hot water tank 40 via the surplus steam line L8.

  An overflow discharge line L2 is connected to the upper part of the heat source hot water tank 40. The overflow discharge line L2 is a discharge line for preventing the heat source hot water tank 40 from overflowing. When the water level of the heat source hot water in the heat source hot water tank 40 rises to a predetermined level or higher, the heated heat source hot water is discharged to the outside. Is.

  An external supply pump P4 is disposed on the heat source hot water external supply line L9, and the heat source hot water external supply line L9 is connected to the water supply switching valve V3. The heat utilization facility 100 includes a cleaning tank 101, and steam supplied via the steam delivery line L7 is supplied to the cleaning tank 101 via the control valve V100. Hot water is supplied to the washing tank 101 via a control valve V101, a water supply switching valve V3, and a line L102 on the water supply line L100. The supply water supplied to the cleaning tank 101 is heated by the supplied steam, for example, heated to 40 ° C. to 60 ° C., and functions as cleaning water. A temperature sensor 102 is disposed in the cleaning tank 101, and the opening of the control valve V100 is controlled based on the temperature detected by the temperature sensor 102 to adjust the amount of steam supplied to the cleaning tank 101. When the cleaning tank 101 is cleaning the tray or the like, the water supply switching valve V3 connects the water supply line L100 and the line L102 and supplies the supply water to the cleaning tank 101.

  When the washing water in the washing tank 101 is about 40 ° C., there is a possibility of breeding Legionella bacteria, so it is necessary to sterilize the washing water periodically. At the time of this sterilization, an external supply command is issued from the heat utilization equipment 100 side to the heat pump steam generation system 10, and the water supply switching valve V 3 connects the heat source hot water external supply line L 9 and the line L 102 to the cleaning tank 101. Supply hot water at ℃. The washing tank 101 sterilizes the washing tank 101 with 80 ° C. heat source hot water.

  The control unit 60 is connected to the heat pump 20, the heater 41, the water level sensor 50, the temperature sensor 52, the water supply valve V1, the water supply switching valve V3, the heat source hot water supply pump P1, the heated water supply pump P2, and the external supply pump P4. . The control unit 60 includes a water level control unit 61, a temperature control unit 62, a heat source hot water external supply control unit 63, and a heat pump output control unit 64.

  The water level control unit 61 controls the opening of the water supply valve V1 based on the water level detected by the water level sensor 50, and controls the amount of water supplied to the heat source hot water tank 40. Based on the temperature detected by the temperature sensor 52, the temperature control unit 62 controls the amount of current supplied to the heater 41 to control the amount of heating to the heat source hot water, and also controls the opening of the water supply valve V <b> 1. The amount of water supplied to the tank 40 is controlled to control the cooling of the heat source hot water. The temperature control unit 62 controls the heat source hot water to a predetermined temperature, for example, 80 ° C. In addition, the temperature of feed water is less than 80 degreeC.

  When there is an external supply command from the heat utilization equipment 100 side, the heat source hot water external supply control unit 63 switches the water supply switching valve V3 to the connection between the heat source hot water external supply line L9 and the line L102, and the cleaning bath 101 has a temperature of 80 ° C. While supplying heat source warm water, control which restores the heat source warm water in the heat source warm water tank 40 to the original storage state is performed.

  For example, during normal operation, the heat pump output control unit 64 is operated with superheat control that adjusts the drive rotation speed of the compressor 22 and the opening of the expansion expander 24 so that the refrigerant in the compression stroke has a predetermined superheat value or more. Is done. This superheat degree control is executed based on detection values (suction pressure and suction temperature, discharge pressure and discharge temperature) of a pressure sensor and a temperature sensor (not shown) provided on one or both of the suction side and the discharge side of the compressor 22, for example. Is done. In addition, the heat pump output control part 64 performs output control according to the heat source warm water temperature in the heat source warm water tank 40 so that it may mention later.

  The water level control is performed with priority given in the order of the water level control in the heat source hot water external supply control unit 63, the water level control in the temperature control unit 62, and the water level control in the water level control unit 61.

<Water level control treatment>
Next, the water level control processing procedure by the water level control unit 61 will be described with reference to the flowchart shown in FIG. As shown in FIG. 2, first, the water level control unit 61 sets a supply amount of 1.5 L / min as a water supply initial setting (step S101). Thereafter, it is determined whether or not there is a priority order setting by the temperature control unit 62 or the heat source hot water external supply control unit 63 (step S102). If there is a priority water level setting (step S102, Yes), the priority water level control is performed (step S103), and the process proceeds to step S106.

  On the other hand, when there is no priority water level setting (step S102, No), the current water level of the heat source hot water is acquired from the water level sensor 50 (step S104). Thereafter, based on the relationship between the water supply level and the water supply level shown in FIG. 3, control is performed to set the water supply to the acquired water level (step S105), and the process proceeds to step S106.

  In step S106, it is determined whether or not there is an instruction to end the water level control process. If there is no instruction to end (No in step S106), the process proceeds to step S102 to continue the above-described process, and there is an instruction to end. In the case (step S106, Yes), this process is terminated.

  In the relationship of the water supply level to the water level shown in FIG. 3, the water level is increased between 20% and 90%, the water supply is 2.5 L / min, and the water level is increased between 90% and 95%. Accordingly, the water supply amount is set to 0, and the supply amount is set to 0 when the water level is between 95% and 100%. In the relationship between the water level and the water level shown in FIG. 3, the water level is relatively large up to 90%, and the appropriate water level is between 90% and 95%. By performing such water level control, the water level can be quickly maintained between 90% and 95%.

  In addition, when the water level becomes 20% or less, an abnormal process for urgently stopping the heat pump 20 is performed.

<Temperature control process>
Next, the temperature control processing procedure by the temperature control unit 62 will be described with reference to the flowchart shown in FIG. As shown in FIG. 4, first, the temperature control unit 62 sets the heat source hot water temperature to 80 ° C. as the initial temperature setting (step S201). Thereafter, the temperature control unit 62 determines whether or not the temperature (heat source hot water temperature) detected by the temperature sensor 52 is 80 ° C. or less (step S202).

  When the heat source hot water temperature is 80 ° C. or lower (step S202, Yes), the energization to the heater 41 is turned on (step S203), and the process proceeds to step S205. On the other hand, when the heat source hot water temperature is not 80 ° C. or lower (No at Step S202), the power supply to the heater 41 is turned off (Step S204), and the process proceeds to Step S205.

  In step S205, it is further determined whether or not the heat source hot water temperature is 88 ° C. or higher. When the heat source hot water temperature is 88 ° C. or higher (step S205, Yes), the water supply setting is set to 4 L / min (step S206), the water supply amount is increased to cool the heat source hot water temperature, and step S207 is performed. Migrate to That is, the cooling capacity of the feed water is made larger than the heating capacity of the heater 41 per unit time. On the other hand, if the heat source hot water temperature is not 88 ° C. or higher (step S205, No), the process proceeds to step S207 as it is.

  In step S207, it is further determined whether or not the heat source hot water temperature is less than 78 ° C. When the heat source hot water temperature is lower than 78 ° C. (step S207, Yes), water supply is stopped (step S208), and the process proceeds to step S209. On the other hand, if the heat source hot water temperature is not less than 78 ° C. (No at Step S207), the process proceeds to Step S209 as it is.

  In step S209, it is further determined whether the heat source hot water temperature is 78 ° C. or higher and lower than 80 ° C. When the heat source hot water temperature is 78 ° C. or higher and lower than 80 ° C. (step S209, Yes), the water supply amount is set by the water level control unit 61 (step S210), and the heat source hot water temperature shown in FIG. Based on the relationship of the heat pump output, the heat pump output control unit 64 performs heat pump output control (step S211), and the process proceeds to step S212.

  On the other hand, when the heat source hot water temperature is not higher than 78 ° C. and lower than 80 ° C. (No in step S209), the heat pump output control unit 64 is controlled based on the relationship of the heat pump output to the heat source hot water temperature shown in FIG. Heat pump output control is performed (step S211), and the process proceeds to step S212.

  In step S212, it is determined whether or not there has been an instruction to end the temperature control process. If there is no instruction to end (No in step S212), the process proceeds to step S202 to continue the above-described process, and there is an instruction to end. In the case (step S212, Yes), this process is terminated.

  In addition, the water level control unit 61 causes the water level detected by the water level sensor 50 to be the predetermined water level when the temperature detected by the temperature sensor 52 is within a predetermined range (78 ° C. or higher and lower than 80 ° C .: Step S209, Yes). If the temperature detected by the temperature sensor 52 is outside the predetermined range (88 ° C. or higher (step S205, Yes), less than 78 ° C. (step S207, Yes)), the supply water is controlled. The supply amount is set to a fixed value (4 L / min (step S206), water supply stop; supply amount 0 (step S208)) based on the temperature detected by the temperature sensor 52.

  In the relationship of the heat pump output to the heat source warm water temperature shown in FIG. 5, the heat source warm water temperature is set to 100%, the heat source warm water temperature is set to 100%, and the heat source warm water temperature is between 81 ° C. and 86 ° C. When the heat pump output is reduced and the heat source hot water temperature is 86 ° C., the heat pump output is set to 50%. Furthermore, when the heat source hot water temperature is 86 ° C. or higher, the heat pump output is set to be 50% constant. By performing such heat pump output control, it is possible to suppress the temperature rise of the heat source hot water due to the surplus steam that is always output when the heat source hot water temperature is 80 ° C. or higher.

<Heat source hot water external supply control processing>
Next, the heat source hot water external supply control processing procedure by the heat source hot water external supply control unit 63 will be described with reference to the flowchart shown in FIG. As shown in FIG. 6, the heat source hot water external supply control unit 63 first determines whether or not there is an external supply command from the heat utilization facility 100 side (step S301). If there is no external supply command (No in step S301), the process is terminated.

  On the other hand, when there is an external supply command (step S301, Yes), it is determined whether or not the heat source hot water temperature is 78% or more (step S302). If the heat source hot water temperature is not 78 ° C. or higher (step S302, No), the determination process in step S302 is repeated. If the heat source hot water temperature is 78 ° C. or higher (step S302, Yes), the external supply pump P4 is It is operated (step S303), the water supply switching valve V3 is switched to the heat source hot water side (step S304), and the supply of the heat source hot water to the heat utilization equipment 100 side is started.

  Thereafter, it is determined whether the water level is 30% or less (step S305). Only when the water level is 30% or less (step S305, Yes), the supply amount of the external supply pump P4 is decreased (step S306), the supply amount of the heat source hot water is decreased, and the process proceeds to step S307.

  In step S307, it is determined whether the water level is 40% or more. Only when the water level is 40% or more (step S307, Yes), the operation of the external supply pump P4 is returned to the normal operation (step S308), and the process proceeds to step S309.

  Thereafter, the heat source hot water external supply control unit 63 determines whether or not the external supply time has elapsed from the start of supply of the heat source hot water (step S309). If the external supply time has not elapsed (step S309, No), the process proceeds to step S305 and the above-described processing is repeated. On the other hand, when the external supply time has elapsed (step S309, Yes), the water supply switching valve V3 is switched to the water supply side (step S310), the external supply pump P4 is further stopped (step S311), and the heat source hot water is used. Supply to the facility 100 is terminated.

  Thereafter, the heat source hot water external supply control unit 63 performs a recovery process for the reduced heat source hot water. First, the heat source hot water external supply control unit 63 sets the heat pump output to 100% (step S312), further increases the water supply setting to 3.5 L / min (step S313), and restores the water level of the heat source hot water tank 40. At the same time, by supplying a large amount of surplus steam, a temperature drop accompanying an increase in the amount of water supply is prevented. That is, the heating amount of the heater 41 is assisted by a large amount of surplus steam. This control is not limited to when the supply of the heat source hot water to the heat utilization equipment 100 is terminated, but when the amount of water supply per unit time to the heat source hot water tank 40 exceeds a predetermined value, for example, the heat capacity necessary for water supply is provided by the heater 41. It can be applied as appropriate when the heat capacity exceeds the heat capacity.

  Thereafter, it is determined whether or not the heat source hot water temperature is 78% or less (step S314). Only when the heat source hot water temperature is 78% or less (step S314, Yes), the water supply setting is set to 1.5 L / min (step S315), the water supply amount is suppressed, and the process proceeds to step 316.

  In step S316, it is determined whether the heat source hot water temperature is 80 ° C. or higher. Only when the heat source hot water temperature is 80 ° C. or higher (step S316, Yes), the water supply setting is set to 3.5 L / min (step S317), the water supply amount is increased, and the process proceeds to step S318.

  In step S318, it is determined whether the water level is 90% or higher. When the water level is not 90% or more (step S318, No), the process proceeds to step S314 and the above-described processing is repeated. On the other hand, when the water level is 90% or more (step S318, Yes), the heat source hot water has been restored, so that the normal supply amount is set by the water level controller 61 (step S319), and the heat pump output setting is normally controlled. (Step S320), and this process is terminated.

  In the present embodiment, when the heat pump 20 is activated, even when steam is not supplied to the heat utilization facility 100, the heat source hot water at 80 ° C. can be supplied, so that the operation of the heat utilization facility 100 is performed. Can be resumed quickly.

  Moreover, in this Embodiment, since heat source warm water is supply water (soft water), such as a tap water which passed the water softener, and there are few impurities, it becomes suitable for the heat utilization equipment 100, such as a washing | cleaning equipment.

  Furthermore, since the surplus steam is supplied to the heat source hot water tank 40, an energy saving effect can be obtained and the heating capacity of the heating means such as the heater 41 can be suppressed.

  Moreover, since the heat source hot water supplied to the evaporator 21 is returned to the heat source hot water tank 40 after absorbing heat, an energy saving effect can be obtained.

  The heating of the heat source hot water is not limited to the heater 41, and other heating means may be used. For example, it may be heated with the heat quantity of waste heat wastewater such as factory wastewater through a heat exchanger, and if it is warm water with few impurities such as steam drain water, the heat source hot water tank 40 is directly connected to the water supply line different from the supply water. You may make it add to. In this embodiment, only the temperature adjustment of the heat source hot water by heating is described. However, when the temperature of the feed water is high, tap water having a temperature lower than that of the feed water is used in a feed water line different from the feed water. It may be supplied to lower the temperature of the heat source hot water to an appropriate range.

  Further, in the present embodiment, the heat source hot water discharged from the heat source hot water tank 40 is directly supplied to the evaporator 21, the condenser 23, and the heat utilization facility 100 without passing through each other. It does not preclude interposing an independent heat exchange device in between. For example, when the temperature of the heat source required from the heat utilization facility 100 is higher than the temperature of the heat source hot water, the temperature of the heat source hot water discharged from the heat source hot water tank 40 is further heated by another heat exchanger or heating device. Then, it may be sent to the heat utilization facility 100 after being made into hot water or steam.

  In addition, each configuration illustrated in the above embodiment is functionally schematic and does not necessarily need to be physically configured as illustrated. That is, the form of distribution / integration of each device and component is not limited to the one shown in the figure, and all or a part thereof is functionally / physically distributed / integrated in arbitrary units according to various usage conditions. Can be configured.

DESCRIPTION OF SYMBOLS 10 Heat pump type steam generation system 20 Heat pump 21 Evaporator 22 Compressor 23 Condenser 24 Restriction expander 30 Gas-liquid separator 40 Heat source hot water tank 41 Heater (temperature control part)
50 Water Level Sensor 52,102 Temperature Sensor 60 Control Unit 61 Water Level Control Unit 62 Temperature Control Unit 63 Heat Source Hot Water External Supply Control Unit 64 Heat Pump Output Control Unit 100 Heat Utilization Equipment 101 Washing Tank L1, L100 Water Supply Line L102 Line L13 Heat Source Hot Water Return Line L2 Overflow discharge line L3 Evaporator supply line L4 Heated water supply line L5 Circulation line L6, L7 Steam delivery line L8 Surplus steam line L9 Heat source hot water external supply line P1 Heat source hot water supply pump P2 Heated water supply pump P3 Steam compressor P4 External supply pump V1 Water supply valve V100, V101 Control valve V2 Relief valve V3 Water supply switching valve

Claims (7)

This is a heat pump steam generation system that recovers heat from heat source hot water to a refrigerant using a heat pump, transmits the collected heat to the water to be heated from the refrigerant, generates steam, and supplies the generated steam to a heat utilization facility. And
A water supply unit for supplying supply water to the heat source hot water tank;
A temperature adjusting unit that adjusts the supply water in the heat source hot water tank to a predetermined temperature to form the heat source hot water;
An evaporator supply line for heating the refrigerant by supplying the heat source hot water to the evaporator of the heat pump;
A heat source hot water external supply line capable of supplying the heat source hot water to the heat utilization facility;
A heat pump type steam generation system comprising:   The heat pump steam generation system according to claim 1, wherein the heat source hot water is supplied to the heat utilization facility through the heat source warm water external supply line based on a request from the heat utilization facility side.   The heat pump type steam generation system according to claim 1 or 2, further comprising a heated water supply line capable of supplying the heat source hot water as the heated water to a condenser of the heat pump.   The heat pump steam generation system according to any one of claims 1 to 3, wherein at least a part of the generated steam can be supplied to the heat source hot water tank.   The heat pump output control unit further controls the output of the heat pump, and the heat pump output control unit normally outputs the output of the heat pump when the amount of water supplied to the heat source hot water tank per unit time becomes equal to or greater than a predetermined value. The heat pump steam generation system according to claim 4, wherein the heat pump steam generation system is increased from that during operation.   The heat source warm water return line which makes it possible to return at least a part of the heat source warm water discharged from the evaporator to the heat source warm water tank is provided. Heat pump steam generation system. A water level sensor for detecting the water level in the heat source hot water tank;
A temperature sensor for detecting the temperature in the heat source hot water tank;
A water level control unit for controlling the amount of supply water supplied from the water supply unit;
A temperature control unit that controls the temperature adjusting unit so that the temperature detected by the temperature sensor becomes the predetermined temperature;
With
When the temperature detected by the temperature sensor is within a predetermined range, the water level control unit controls the supply amount of the supplied water so that the water level detected by the water level sensor becomes a predetermined water level, and the temperature sensor The supply amount of the supply water is set to a fixed value based on the temperature detected by the temperature sensor when the detected temperature is outside the predetermined range. The heat pump steam generation system described.

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