HEAT SOURCE SYSTEM

Abstract

Heat source system (200) that supplies heat energy or cooling energy to a load device (500), wherein the heat source system (200) comprises: a heat source device (10, 110) comprising a refrigerant circuit (20) with a compressor (21) configured to compress a refrigerant, a heat medium heat exchanger (22) configured to exchange heat between the refrigerant and a heat medium flowing therein from a load side, a decompression device (23) configured to decompress the refrigerant and a heat source-side heat exchanger (24) configured to exchange heat between the air and the refrigerant, which are connected via a refrigerant line (25) to allow the refrigerant to circulate; a flow rate control pump (73) which is configured to control a flow rate of the heat medium flowing through the load device (500); a control unit (30, 130) which is set up to control the operation of the compressor (21) and the flow rate control pump (73); a storage device (50) configured to store relationship data indicating a relationship between a flow rate value of the flow rate control pump (73) and an operating frequency of the compressor (21), and a temperature sensor (65) which is configured to measure the temperature of the heat medium, wherein the control unit (30, 130) includes an anomaly detection unit (33b) which a reference operating frequency is obtained, which serves as a reference for the operating frequency of the compressor (21), with reference to the relationship data of a current flow rate value of the flow rate control pump (73), compares a current operating frequency of the compressor (21) with the obtained reference operating frequency, and determines whether an anomaly occurs in the system or not, and a data processing unit (32) which, after the flow rate control pump (73) has been operated at a preset flow rate value, controls the operating frequency of the compressor (21), The operating frequency of the compressor (21) is linked to the preset throughput value at a time when the measured temperature, which is measured by the temperature sensor (65), reaches a temperature equilibrium point, and the linked data set stores as balance data in the storage device (50), the data processing unit (32) comprises a data generation unit (32c) that generates the relationship data based on the balance data stored in the memory (50).

Description

Technical field

[0001] The present invention relates to a heat source system that heats or cools a heat medium and supplies the heat medium to a load device. Background on the state of the art

[0002] Previously known heat source systems supply thermal or cooling energy generated by a heat source device to a load device via a heat transfer medium (see, e.g., patent literature 1). The heat source system described in patent literature 1 heats the heat transfer medium flowing in a load-side circuit using the heat generated by the heat source device and delivers the heated heat transfer medium to the load device. Reference list of patent literature Patent literature 1: JP 2016-166718 Patent literature 2: JP 2010 - 127 568 A discloses a device for detecting anomalies comprising: a measuring section for acquiring a measured value from each sensing device; a storage section for storing at least the heat exchange capacity at a normal time in advance; a calculation section with corresponding estimators for estimating the refrigerant circulation quantity, the delivery quantity of the fluid as the heat exchange target with a heat source-side heat exchanger, orthe delivery quantity of the fluid as a heat exchange target with consumption-side heat exchangers, for calculating the heat exchange efficiency of at least one heat exchanger of the heat source heat exchanger or the consumption-side heat exchangers using at least each estimated value estimated by the respective estimators and each measured value acquired by the measuring part, and calculating a degree of deviation between the heat exchange efficiency obtained by the calculation and the heat exchange efficiency at normal time, which is stored beforehand; and a determination part for determining an abnormality of the heat exchanger as the abnormality detection target based on the degree of deviation obtained by the calculation part. Patent literature 3: WO 2012 / 049 820 A1 discloses a refrigeration circuit device comprising: a low-pressure sensing device for sensing the pressure of the refrigerant drawn into a compressor; an intake refrigerant temperature sensing device for sensing the temperature of the refrigerant drawn into the compressor; a frequency sensing device for sensing the operating frequency of the compressor; a device for sensing the inlet temperature of the fluid to be cooled, which sensing the temperature of the fluid to be cooled flowing into an evaporator; a device for sensing the outlet temperature of the fluid to be cooled, which sensing the temperature of the fluid to be cooled flowing out of the evaporator;and a flow rate calculation device (measuring unit, calculation unit and storage unit) for calculating the absolute flow rate of the fluid to be cooled flowing through the evaporator, using the sensing values ​​from each of the sensing devices. Patent literature 3: CN 1 05 318 460 A discloses a control system, a control method, and a water cooling unit that utilizes the control system and the control method. The inlet water temperature and the outlet water temperature of a heat exchanger of the water cooling unit, as well as heat exchanger parameters for calculating an average heat transfer temperature difference, are recorded. The frequency of a water pump and the load of a compressor are jointly controlled based on these parameters, and therefore the water cooling unit can be maintained in a generally energy-saving operating state in any operating condition. Summary of the invention: Technical problem

[0003] However, the conventional heat source system, as described in patent literature 1, requires an external system to detect deterioration over time, equipment failures, or other problems. This means that the conventional heat source system has the problem that it cannot detect deterioration over time, equipment failure, or other problems within the system itself.

[0004] It is an objective of the present invention, which was made to solve the problems described above, to provide a heat source system that detects anomalies such as deterioration over time or equipment failure within the system. Solution to the problem

[0005] One embodiment of the present invention is a heat source system that supplies thermal or cooling energy to a load device, wherein the heat source system comprises: a heat source device comprising a refrigerant circuit with a compressor configured to compress a refrigerant, a heat exchanger configured to exchange heat between the refrigerant and a heat medium flowing therein from a load side, a decompression device configured to decompress the refrigerant, and a heat source-side heat exchanger configured to exchange heat between air and the refrigerant, which are connected via a refrigerant line to allow the refrigerant to circulate; a flow rate control pump configured to control a flow rate of the heat medium flowing through the load device;a control unit configured to control the operation of the compressor and the flow rate control pump; and a storage device configured to store relationship data indicating a relationship between a flow rate value of the flow rate control pump and an operating frequency of the compressor, wherein the control unit includes an anomaly detection unit which receives a reference operating frequency, which serves as a reference for the operating frequency of the compressor, compares a current operating frequency of the compressor with the received reference operating frequency with respect to the relationship data of a current flow rate value of the flow rate control pump, and determines whether or not an anomaly occurs in the system. Advantageous effect of the invention

[0006] Since the heat source system of the embodiment obtains the operating frequency of the compressor, which serves as a reference, using the relationship data, it is possible to grasp an operating state of the entire system not only taking into account the heat source device, but also a situation on the load side, and thereby detect an anomaly in the system such as deterioration over time and device failure. Brief description of the drawings [ Fig. 1] Fig. Figure 1 is a schematic representation illustrating a configuration of a heat source system according to embodiment 1 of the present invention. [ Fig. 2] Fig. Figure 2 is a block diagram, a functional configuration of a control unit of a heat source device. Fig. 1. Illustrative. [ Fig. 3] Fig. 3 is a flowchart, the processing of creating relationship data of an operation of the heat source system of Fig. 1. Illustrative. [ Fig. 4] Fig. 4 is a diagram generated by the control unit. Fig. Illustrating the relationship data created for the second time. [ Fig. 5] Fig. 5 is a flowchart, the processing of the detection of an anomaly in the heat source system of the operation of the heat source system of Fig. 1. Illustrative. [ Fig. 6] Fig. Figure 6 is a schematic representation illustrating a configuration of a heat source system according to embodiment 2 of the present invention. [ Fig. 7] Fig. Figure 7 is a block diagram, a functional configuration of a control unit of the heat source device of Fig. 6 illustrative. [ Fig. 8] Fig. Figure 8 is a flowchart, the processing of the detection of an anomaly in the heat source system of an operation of the heat source system of Fig. 6 illustrative. Description of the embodiments: Form 1.

[0007] Fig. Figure 1 is a schematic representation illustrating a configuration of a heat source system according to embodiment 1 of the present disclosure. As in Fig. As shown in Figure 1, a heat source system 100 includes a heat source device 10, which is equipped with a refrigerant circuit 20. The refrigerant circuit 20 includes a compressor 21, a heat medium heat exchanger 22, a decompression device 23, and a heat source-side heat exchanger 24, which are connected via a refrigerant line 25 so that the refrigerant can circulate.

[0008] The compressor 21 includes a compressor motor (not shown), which is driven, for example, by an inverter to compress the refrigerant. This means that controlling the compressor 21 by the inverter allows its operating frequency to be changed to any desired frequency. The heat exchanger 22 includes, for example, a tube-and-fin type heat exchanger and is configured to exchange heat between the refrigerant flowing through the refrigerant circuit 20 and a heat transfer medium flowing into it from the load side. The decompression device 23 includes, for example, an electronic expansion valve and is configured to decompress a refrigerant. The heat source-side heat exchanger 24 includes, for example, a tube-and-fin type heat exchanger and is configured to exchange heat between the refrigerant flowing through the refrigerant circuit 20 and air.

[0009] By supplying heat energy to the load side in this configuration, the refrigerant compressed by compressor 21 is caused to flow from the heat source device 10 into the heat exchanger 22. Conversely, by supplying cooling energy to the load side in this configuration, the refrigerant compressed by compressor 21 is caused to flow from the heat source device 10 into the heat exchanger 24 on the heat source side.

[0010] The heat source system 100 comprises a first heat medium circuit 60 with a heat source-side pump 63, a heat medium heat exchanger 22, and a load-side heat exchanger 64, which are connected via a supply line 61 and a return line 62 to allow a first heat medium to circulate. One end of the supply line 61 is connected to the heat medium heat exchanger 22, and the other end is connected to the load-side heat exchanger 64. One end of the return line 62 is connected to the load-side heat exchanger 64, and the other end is connected to the heat medium heat exchanger 22 via the heat source-side pump 63. In the first heat medium circuit 60, the first heat medium circulates through a [missing information - likely a specific component or element] in a [missing information - likely a specific component or element]. Fig. The direction shown by the white arrow is driven by the heat source-side pump 63. In addition, the heat source system 100 includes a temperature sensor 65, which is provided on the supply line 61, to measure the temperature of the heat medium flowing through the supply line 61.

[0011] The heat source system 100 further includes a supply line 71 and a return line 72, which connect the load-side heat exchanger 64 and the load device 500, and a flow rate control pump 73, which is provided on the return line 72. The flow rate control pump 73 includes a motor (not shown) which is controlled by a control unit 30, which will be described later, and is capable of controlling a flow rate value of the flow rate control pump 73 by controlling its frequency. In embodiment 1, the flow rate value of the flow rate control pump 73 is a rate with respect to a maximum frequency of the flow rate control pump 73. For example, if a frequency of the flow rate control pump 73 is a maximum, the flow rate value is 100%.

[0012] One end of the supply line 71 is connected to the load-side heat exchanger 64, and the other end is connected to the load device 500. One end of the return line 72 is connected to the load device 500, and the other end is connected to the load-side heat exchanger 64 via the flow rate control pump 73. The flow rate control pump 73 controls the flow rate of the heat medium flowing through the load device 500. That is, on the load side of the heat source device 10, the flow rate control pump 73, the load-side heat exchanger 64, and the load device 500 are connected via the supply line 71 and the return line 72 to form a second heat medium circuit 70 in which a second heat medium circulates. In the second heat medium circuit 70, the second heat medium circulates in a manner controlled by a Fig. 1. The direction shown by the white arrow is indicated by driving the flow rate control pump 73.

[0013] Water, brine, or other media can be used as the first and second heat transfer media. The first heat transfer medium can be the same as the second heat transfer medium or different from it.

[0014] The heat source device 10 includes the control unit 30, an input device 40, an output device 45, and a storage device 50. The control unit 30 controls the compressor 21, the decompression device 23, the heat source-side pump 63, and the flow rate control pump 73. In embodiment 1, the control unit 30 includes, as an operating mode that causes the heat source device 10 to start and operate, a fault test mode for generating relationship data, and a normal operating mode for performing normal operation to control various actuators in the heat source device 10 in accordance with a load.

[0015] The input device 40 receives an input from a user and transmits an operation signal, indicating the contents of the received input, to the control unit 30. The input device 40 includes, for example, a variety of physical operation buttons. The input device 40 has a function to receive from the user, for example, an operation to switch the energy of the heat source device 10 on and off, an operation to set an operating mode, and an instruction to start the heat source device 10.

[0016] The output device 45 outputs anomaly information indicating that the heat source system 100 is in an abnormal state. The output device 45 includes a display device, which may be, for example, a liquid crystal display (LCD), or a notification device, which may include a loudspeaker or a combination of a display device and the notification device. The display device, as the output device 45, shows anomaly information using at least one type of character and image. The display device, as the output device 45, notifies the user of anomaly information using at least one type of sound and speech.

[0017] The storage device 50 includes a non-volatile memory. The storage device 50 stores relationship data that indicates a relationship between a flow rate value of the flow rate control pump 73 and an operating frequency of the compressor 21. The control unit 30 uses this relationship data to estimate a reference range corresponding to a normal operating condition of the heat source system 100. That is, the relationship data serves as a reference to determine whether the heat source system 100 is operating normally or not and is used to detect an abnormal operating condition of the heat source system 100.

[0018] The storage device 50 stores a variety of preset flow rates that were set in advance for creating the relationship data for the flow rate of the flow rate control pump 73. The storage device 50 also stores a preset operating frequency that is assigned to each preset flow rate for the operating frequency of the compressor 21. In addition, the storage device 50 stores an operating program or other programs of the control unit 30.

[0019] The load device 500 includes an electric valve 510 that can adjust its opening degree and a heat exchanger 520 that exchanges heat between the second heat medium and air. The load device 500 is, for example, an air conditioner that can operate in heating mode when the heat source device 10 is configured to supply heat energy to the load side, or in cooling mode when the heat source device 10 is configured to supply cooling energy to the load side.

[0020] Here, the heat exchanger 520 provided for the load device 500 can also be configured to exchange heat between the second heat medium and another heat medium. If the heat source device 10 is configured to supply heat energy to the load side, underfloor heating or a similar system can be used as the load device 500. If the other heat medium for heat exchange with the second heat medium is water, a water heater can be used as the load device 500. Furthermore, if the heat source device 10 is configured to supply cooling energy to the load side and if the other heat medium for heat exchange with the second heat medium is water, the load device 500 can, for example, be used as a device for the cold water supply for industrial purposes in a factory.

[0021] Fig. Figure 2 is a block diagram showing a functional configuration of the control unit of the heat source device in Fig. 1 illustrates. As in Fig. As shown in Figure 2, the control unit 30 comprises an operating mode determination unit 31, a data processing unit 32, a normal operation processing unit 33, and an operating control unit 34. The operating mode determination unit 31 determines whether the user instructs activation in a fault-check mode or not. More precisely, the operating mode determination unit 31 issues an operating command to the data processing unit 32 when the input device 40 transmits an operating signal indicating startup in a fault-check mode. Conversely, the operating mode determination unit 31 issues an operating command to the normal operation processing unit 33 when the input device 40 transmits an operating signal indicating startup in a normal operation mode.

[0022] During the change of the flow rate control pump 73 to two or more preset flow rates, the data processing unit 32 controls the operating frequency of the compressor 21 for each preset flow rate, assigns the operating frequency of the compressor 21 when a temperature measured by the temperature sensor 65 reaches a temperature equilibrium point with a preset flow rate at that time, and stores the assigned data record in the storage device 50 as equilibrium data. The data processing unit 32 creates relationship data based on two or more equilibrium data elements.

[0023] More precisely, the data processing unit 32 comprises a command processing unit 32a, a temperature determination unit 32b, and a data creation unit 32c. The command processing unit 32a acquires the preset value and a preset operating frequency assigned to the preset throughput value from the storage device 50 and transmits an operating command with the acquired preset throughput value and preset operating frequency to the operating control unit 34.

[0024] When a determination result is acquired indicating that the measured temperature has reached a temperature equilibrium point of the temperature determination unit 32b, the command processing unit 32a assigns the operating frequency of the compressor 21 to the flow rate value of the flow rate control pump 73 and stores the assigned data record in the storage device 50 as equilibrium data. In this case, if there are some preset flow rates stored in the storage device 50 that have not been transmitted to the operating control unit 34, the command processing unit 32a acquires one of these preset flow rates and the preset operating frequency assigned to the preset flow rate value.

[0025] When the temperature measuring unit 32b receives a reading indicating that the measured temperature has not reached the temperature equilibrium point, the command processing unit 32a controls the operating frequency of the compressor 21. This means that the command processing unit 32a has the function of transmitting an operating command, specifying an adjustment of the operating frequency of the compressor 21, to the operating control unit 34. For example, the command processing unit 32a transmits an operating command to the operating control unit 34 to decrease the operating frequency of the compressor 21 by a predetermined amount or to increase the operating frequency of the compressor 21 by a predetermined amount.Here, the specified quantity, which corresponds to the adjustment quantity of the operating frequency of the compressor 21, can be changed accordingly, depending on the configuration contents or other factors of the heat source system 100.

[0026] The temperature determination unit 32b determines whether the temperature measured by the temperature sensor 65 has reached the temperature equilibrium point after a preset time has elapsed since the transmission of the operating command by the command processing unit 32a. More precisely, the temperature determination unit 32b is configured to acquire temperature readings from the temperature sensor 65 at a predetermined time interval. If the same temperature readings are acquired a preset number of times consecutively from the temperature sensor 65 within the preset time interval, the temperature determination unit 32b determines that the temperature measured by the temperature sensor 65 has reached the temperature equilibrium point.Here, the preset time, the predetermined time, and the preset number of times can be changed depending on the configuration settings, scale, installation environment, and similar aspects of the heat source system 100. For example, the number of times can be set to a greater than 2. Furthermore, the temperature determination unit 32b is configured to output the determination result to the command processing unit 32a.

[0027] The data creation unit 32c creates relationship data based on the equilibrium data stored by the command processing unit 32a. In embodiment 1, the command processing unit 32a creates data of a graph that smoothly connects the equilibrium data as relationship data.

[0028] The normal operation processing unit 33 comprises an operating command unit 33a and an anomaly detection unit 33b. The operating command unit 33a controls various actuators provided for the heat source system 100 according to the load. That is, the operating command unit 33a transmits an operating command to the operating control unit 34 according to the load.

[0029] The anomaly detection unit 33b receives a reference operating frequency, which serves as a reference for the operating frequency of the compressor 21, with reference to the relationship data of the current flow rate value of the flow rate control pump 73. Furthermore, the anomaly detection unit 33b compares the current operating frequency of the compressor 21 with the acquired reference operating frequency and determines whether an anomaly occurs in the system. If it determines that an anomaly occurs in the system, the anomaly detection unit 33b transmits an output command to the operating control unit 34.

[0030] More precisely, the anomaly detection unit 33b determines that the system is in a normal state if the current operating frequency of compressor 21 is within a reference range determined centered on the reference operating frequency, or determines that an anomaly is present in the system if the current operating frequency of compressor 21 is outside the reference range. Here, the reference range is a range that includes a value greater than a value obtained by multiplying the reference operating frequency by a lower limit determination rate and a value less than a value obtained by multiplying the reference operating frequency by an upper limit determination rate. The lower limit determination rate is set to a value less than 1, and the upper limit determination rate is set to a value greater than 1.This means that the anomaly detection unit 33b determines that the heat source system 100 is operating normally if the following relationship is established: “Reference operating frequency × lower limit determination rate < current operating frequency of compressor 21 < Reference operating frequency × upper limit determination rate”. Conversely, the anomaly detection unit 33b determines that an anomaly has occurred in the heat source system 100 if the following relationship is established: “Current operating frequency of compressor 21 ≤ Reference operating frequency × lower limit determination rate” or “Reference operating frequency × upper limit determination rate ≤ current operating frequency of compressor 21”.

[0031] The anomaly detection unit 33b can, for example, also be configured to detect an anomaly in the system if there is a difference of 10% or more between the operating frequency of compressor 21 and the reference operating frequency during normal operation. In this way, if a threshold for the difference between the operating frequency of compressor 21 and the reference operating frequency is set to 10%, the lower limit determination rate is set to 0.9 and the upper limit determination rate is set to 1.1. Here, the threshold for the difference between the operating frequency of compressor 21 and the reference operating frequency is not limited to 10%, but can be changed as needed depending on an operating condition, an installation environment, or other factors of the heat source system 100.The lower limit determination rate and the upper limit determination rate can also be set so that the difference between the lower limit determination rate and 100% differs from the difference between the upper limit determination rate and 100%. This means, for example, that the lower limit determination rate can be set to 0.87 and the upper limit determination rate can be set to 1.08, so that the difference between the lower limit determination rate and 1 differs from the difference between the upper limit determination rate and 1. Furthermore, a different lower limit determination rate and a different upper limit determination rate can be set for each flow rate value of the flow rate control pump 73.

[0032] The operating control unit 34 controls the operation of the compressor 21, the decompression unit 23, the heat source-side pump 63, and the flow rate control pump 73 in accordance with an operating command transmitted by the command processing unit 32a or the operating command unit 33a, or an output command transmitted by the anomaly detection unit 33b. The operating control unit 34 causes the output device 45 to display anomaly information in accordance with an output command transmitted by the anomaly detection unit 33b. If the output device 45 is a display device, the operating control unit 34 causes the output device 45 to display anomaly information generated with at least one of the characters and images.If output device 45 is a notification device, the operating control unit 34 causes output device 45 to report anomaly information using at least one audio and one audio signal. If output device 45 includes both a display device and a notification device, the operating control unit 34 causes anomaly information to be output by at least one of the display device and one of the notification device. This allows the user to recognize that an anomaly has occurred in the heat source system 100 and thus enables rapid countermeasures to be taken. For example, the user who has detected the generation of an anomaly communicates with a service technician and can immediately confirm the status of the heat source system 100.

[0033] The control unit 30 can also be implemented in hardware, such as a circuit device that implements the respective functions described above. Alternatively, the respective functions can be implemented in software, for example, by an operating device such as a microcontroller, a digital signal processor (DSP), or a central processing unit (CPU). The memory device 50 can consist of random-access memory (RAM) and read-only memory (ROM), programmable ROM (PROM) such as flash memory, or a hard disk drive (HDD).

[0034] Fig. 3 is a flowchart, the processing of creating relationship data of an operation of the heat source system of Fig. 1. Illustratively. The processing contents of the control unit 30, when the heat source device 10 is activated in a fault-check mode, are described in more detail with reference to Fig. 3 described.

[0035] First, the user switches on the energy of the heat source device 10 via the input device 40, sets an operating mode or other settings, and causes the heat source device 10 to start the activation process (step S101). The operating mode determination unit 31 then determines whether the set operating mode is a fault-check mode or not (step S102). If the operating mode determination unit 31 determines that the set operating mode is not a fault-check mode (step S102 / No), the process continues to step S201. Fig. 5, which will be described later, and the operation will start in normal operating mode.

[0036] On the other hand, the command processing unit 32a acquires the preset throughput value and preset operating frequency from the storage device 50 when the operating mode determination unit 31 determines that the operating mode is a fault-check mode (step S102 / Yes). The command processing unit 32a transmits an operating command with the acquired preset throughput value and preset operating frequency to the operating control unit 34 (step S103).

[0037] The operating control unit 34 causes the flow rate control pump 73 to operate at the preset flow rate according to the operating command of the command processing unit 32a (step S104) and causes the compressor 21 to operate at the preset operating frequency (step S105). Next, the temperature determination unit 32b determines whether a temperature measured by the temperature sensor 65 has reached the temperature equilibrium point after a preset time has elapsed (step S106).

[0038] If the temperature determination unit 32b determines that the measured temperature has not reached the temperature equilibrium point (step S106 / No), the command processing unit 32a controls the operating frequency of the compressor 21. This means that the command processing unit 32a transmits an operating command to the operating control unit 34, indicating an adjustment quantity for the operating frequency of the compressor 21. The operating control unit 34 then decreases or increases the operating frequency of the compressor 21 by a predetermined amount, according to the operating command from the command processing unit 32a (step S107).

[0039] This means that if the temperature determination unit 32b determines that the measured temperature does not reach the temperature equilibrium point (step S106 / No), the process continues to step S106 via step S107 and a sequence of processes in steps S106 and S107 is repeated until the temperature measured by the temperature sensor 65 reaches the temperature equilibrium point.

[0040] On the other hand, when the temperature determination unit 32b determines that the measured temperature has reached the temperature equilibrium point (step S106 / Yes), the command processing unit 32a assigns the operating frequency of the compressor 21 to the throughput value of the flow rate control pump 73 at that time and causes the storage device 50 to store the assigned data as equilibrium data (step S108).

[0041] Next, the command processing unit 32a determines whether or not there are any remaining preset throughput values, i.e., preset throughput values ​​that were not output to the operating control unit 34 in the storage device 50 (step S109). If there are remaining preset throughput values ​​in the storage device 50, the command processing unit 32a proceeds to step S103. If, on the other hand, there are no remaining preset throughput values ​​in the storage device 50, the command processing unit 32a transmits a data creation command to the data creation unit 32c. The data creation unit 32c reads the balance data from the storage device 50 and creates relationship data using the read balance data according to the data creation command from the command processing unit 32a (step S110).

[0042] Fig. 4 is a diagram generated by the control unit. Fig. Illustrating the 2 created relationship data. An example of the processing, where the control unit creates 30 relationship data, is partly based on Fig. 3 together with Fig. 4 described. Fig. Figure 4 represents the vertical axis as a flow rate value of the flow rate control pump 73 and the horizontal axis as an operating frequency of the compressor. Fig. 4. Three preset throughput values ​​are stored in storage device 50. The preset throughput values ​​are assumed to be 100%, Z1%, and Z2%, respectively. Z1% is assumed to be a rate less than 100% and greater than Z2%.

[0043] First, the data processing unit 32 acquires 100%, which is a preset throughput value, and a preset operating frequency, which is assigned to 100% by the storage device 50, and transmits an operating command to the operating control unit 34 (step S103). Next, the operating control unit 34 causes the flow rate control pump 73 to operate at a flow rate of 100% according to the operating command from the data processing unit 32 (step S104) and controls the compressor 21 so that the temperature measured by the temperature sensor 65 reaches the temperature equilibrium point (steps S105 to S107).

[0044] When the temperature measured by the temperature sensor 65 reaches the temperature equilibrium point (step S106 / Yes), the data processing unit 32 assigns the operating frequency of the compressor 21 to the flow rate value of the flow rate control pump 73 at that time and stores the assigned data set as the equilibrium data in the storage device 50. In the example in Fig. 4 The data processing unit 32 stores balance data in the storage device 50, which results from the assignment of the throughput value 100% to an operating frequency Y0 [Hz] (step S108).

[0045] Next, the data processing unit 32 acquires Z1%, which is a preset flow rate value, and a preset operating frequency assigned to Z1% by the storage device 50, and transmits an operating command to the operating control unit 34 (step S103). The operating control unit 34 then causes the flow rate control pump 73 to operate at a flow rate value of Z1% according to the operating command from the data processing unit 32 (step S104) and controls the compressor 21 so that the temperature measured by the temperature sensor 65 reaches the temperature equilibrium point (steps S105 to S107).

[0046] When the temperature measured by the temperature sensor 65 reaches the temperature equilibrium point (step S106 / Yes), the data processing unit 32 assigns the operating frequency of the compressor 21 to the flow rate value of the flow rate control pump 73 at that time and causes the storage device 50 to store the assigned data set as the equilibrium data. In the example in Fig. 4 The data processing unit 32 stores the balance data in the storage device 50, which results from the assignment of the throughput value Z1% to an operating frequency Y1 [Hz] (step S108).

[0047] Next, the data processing unit 32 acquires Z2%, which is a preset flow rate value, and a preset operating frequency assigned to Z2% by the storage device 50, and transmits an operating command to the operating control unit 34 (step S103). The operating control unit 34 then causes the flow rate control pump 73 to operate at a flow rate value of Z2% according to the operating command from the data processing unit 32 (step S104) and controls the compressor 21 so that the temperature measured by the temperature sensor 65 reaches the temperature equilibrium point (steps S105 to S107).

[0048] When the temperature measured by the temperature sensor 65 reaches the temperature equilibrium point (step S106 / Yes), the data processing unit 32 assigns the operating frequency of the compressor 21 to the flow rate value of the flow rate control pump 73 at that time and causes the storage device 50 to store the assigned data set as the equilibrium data. In the example in Fig. 4 the data processing unit 32 causes the storage device 50 to store the balance data resulting from the assignment of the throughput value Z2% to an operating frequency Y2 [Hz] (step S108).

[0049] The data processing unit 32 creates data for a graph that smoothly connects the three elements of the balance data stored in the storage device 50 and stores the created graph data in the storage device 50 as relationship data. In the example in Fig. Figure 4 illustrates the three elements of the equilibrium data stored in storage device 50 as a point (100, Y0), a point (Z1, Y1), and a point (Z2, Y2). The data digitized from diagram G, which seamlessly connect the respective points being digitized, correspond to the relationship data.

[0050] Fig. Figure 4 illustrates a case where three preset throughput values ​​are stored in storage device 50, but the number of preset throughput values ​​is not limited to 3; it can be 2, 4, or more. The larger the number of preset throughput values, the more equilibrium data can be extracted, leading to improved accuracy of the graph as relational data. This, in turn, makes it possible to increase the accuracy of anomaly detection in the system. Fig. As illustrated in Figure 4, 100% is one of the preset values ​​of the flow rate control pump 73. However, 100% need not be included in the multitude of preset flow rates. Including 100% in the preset values, however, makes it possible to acquire equilibrium data corresponding to a maximum load value and to acquire a critical point in the graph as relationship data. A state in which the flow rate of the flow rate control pump 73 is maximized and the refrigerant circuit 20 is operated such that the temperature measured by the temperature sensor 65 remains constant is a state in which the heat source system 100 operates most efficiently and the heat generated in the heat source system 100 is adequately transferred to the load device 500. From the perspective described above, 100% is preferably included in the preset flow rates.

[0051] Fig. 5 is a flowchart, the processing of the detection of an anomaly in the heat source system of the operation of the heat source system of Fig. 1. Illustratively. The processing contents of the control unit 30, when the heat source device 10 is activated in normal operation, are described in more detail with reference to Fig. 4 together with Fig. 5 described.

[0052] If the operating mode determination unit 31 in step S102 in Fig. If step 3 determines that the operating mode is not a fault test mode (step S102 / No), the heat source device 10 is activated in a normal operating mode. This means that the control unit 30 controls different actuators according to the load via the operating command unit 33a (step S201).

[0053] The anomaly detection unit 33b then acquires the flow rate value of the flow rate control pump 73, which is set by the operating control unit 34 and the operating frequency of the compressor 21 (step S202). Next, the anomaly detection unit 33b receives a reference operating frequency with respect to the acquired flow rate value of the flow rate control pump 73 on the relationship data. This is illustrated here. Fig. 4. A case in which the output value acquired in step S202 is Z3%. Therefore, the anomaly detection unit 33b in the example in Fig. 4 a reference operating frequency Y3 [Hz] with reference to the relationship data of the throughput value Z3% on the graph G (step S203).

[0054] Next, the anomaly detection unit 33b determines whether the operating frequency of compressor 21 acquired in step S202 lies within a reference range centered on the reference operating frequency (step S204). If the current operating frequency of compressor 21 is within the reference range (step S204 / Yes), the anomaly detection unit 33b returns to step S202. Here, if the current operating frequency of compressor 21 is within the reference range (step S204 / Yes), the anomaly detection unit 33b can preferably return to step S202 after a predetermined time period has elapsed. In the case of the intention to specifically detect deterioration over time, the predetermined period should preferably be set to a relatively long period, such as one day, one week, or one month.

[0055] On the other hand, if the current operating frequency of compressor 21 is outside the reference range (step S204 / No), the anomaly detection unit 33b transmits an output command to the operating control unit 34. The operating control unit 34 causes the output device 45 to output anomaly information according to the output command and stops operation of the heat source system 100 (step S205).

[0056] As described above, the heat source system 100 receives the operating frequency of the compressor 21, which serves as a reference using relationship data. This allows it to monitor the operating state of the entire system, taking into account not only the situation of the heat source device 10 but also the load side. It can detect anomalies such as deterioration over time and equipment failures within the system. In a conventional heat source system, an external system such as a system control unit or a server is required to detect deterioration over time or various defects in the configuration outside of the heat source device 10, that is, in the configuration on the load side of the heat source device 10.In this respect, the heat source system 100 estimates a range of a normal operating state of the heat source system 100 with reference to the relationship data obtained by mapping the operating state of the flow rate control pump 73 arranged on the load side to the operating state of the compressor 21 provided in the heat source device 10. This makes it possible to detect deterioration over time or various defects in the configuration on the load side of the heat source device 10 without using an external system.

[0057] Furthermore, the reference range corresponding to the normal operating state of the heat source system 100 is determined centered on the reference operating frequency derived from the relationship data and can also be modified accordingly, depending on the installation environment, operating state, or other conditions of the heat source system 100. Therefore, it is possible to perform anomaly detection tailored to the installation environment or other conditions using the heat source system 100.

[0058] Furthermore, the control unit receives 30 operating frequencies from the compressor 21, corresponding to a variety of preset flow rates based on temperatures measured by the temperature sensor 65, and generates relationship data based on equilibrium data obtained by mapping the acquired operating frequencies to the preset values. This makes it possible to use more accurate relationship data that corresponds to the installation environment and the machine itself in order to determine an abnormal condition, thereby improving the accuracy of anomaly detection. Moreover, because the control unit generates 30 data points from a graph that connects the equilibrium data as relationship data, it is possible to obtain reference operating frequencies that precisely correspond to the respective flow rates of the flow rate control pump 73, further improving the accuracy of anomaly detection.

[0059] If an anomaly is determined to have occurred, the control unit 30 can use at least one sound and speech signal to report anomaly information, or it can use at least one character and image signal to display anomaly information. This makes it possible to prompt the user or other persons to recognize that an anomaly has occurred in the heat source system 100 and to prompt the user to take rapid countermeasures. Design 2.

[0060] Fig. Figure 6 is a schematic representation illustrating a configuration of a heat source system according to embodiment 2 of the present invention. Fig. Figure 7 is a block diagram, a functional configuration of a control unit of the heat source device of Fig. 6 illustratively. A configuration of a heat source system 200 according to embodiment 2 is based on Fig. 6 and Fig. 7 described. The same reference numerals are assigned to the same components as those in the heat source system 100 of the aforementioned embodiment 1, and a description of them is omitted.

[0061] The heat source system 200 is equipped with a storage tank 80, which serves as a heat storage tank between the heat medium heat exchanger 22 and the load-side heat exchanger 64. The heat source system 200 comprises a heat storage circuit 161 and a supply circuit 162 as a first heat medium circuit 160.

[0062] In the heat storage circuit 161, the heat source-side pump 63, the heat medium heat exchanger 22, and the storage tank 80 are connected via the supply line 61 and the return line 62 so that the first heat medium can circulate. One end of the supply line 61 is connected to the heat medium heat exchanger 22, and the other end is connected to the storage tank 80. One end of the return line 62 is connected to the storage tank 80, and the other end is connected to the heat medium heat exchanger 22 via the heat source-side pump 63. In the first heat storage circuit 161, the first heat medium circulates in a circuit formed by a pump 63. Fig. 6. The direction shown by the white arrow is achieved by driving the heat source-side pump 63.

[0063] In supply circuit 162, the storage tank 80 and the load-side heat exchanger 64 are connected via a supply line 81 and a return line 82 to allow the first heat medium to circulate. One end of the supply line 81 is connected to the storage tank 80, and the other end is connected to the load-side heat exchanger 64. Similarly, one end of the return line 82 is connected to the load-side heat exchanger 64, and the other end is connected to the storage tank 80. The first heat medium circulates in supply circuit 162 through a [missing information - likely a specific section or feature]. Fig. The direction indicated by the white arrow in Figure 6 is due to natural convection of the first heat medium stored in the reservoir 80. This means that the first heat medium flowing into the reservoir 80 from the supply line 61 and the first heat medium flowing into it from the return line 82 are mixed and flow out of the return line 62 and the supply line 81, respectively. A temperature stratification of the first heat medium is formed in the reservoir 80, with the temperature increasing from bottom to top.

[0064] Furthermore, the heat source device 110 in the heat source system 200 includes a control unit 130. As in Fig. As shown in Figure 7, the control unit 130 is provided with a normal-operation processing unit 133, which comprises the operating command unit 33a, the anomaly detection unit 33b, and an efficiency processing unit 133c. The anomaly detection unit 33b of embodiment 2 is configured to transmit a reference operating frequency to the efficiency processing unit 133c when the current operating frequency of the compressor 21 is within the reference range.

[0065] The storage device 50 of embodiment 2 stores a maximum efficiency frequency Yc [Hz], which is an operating frequency of the compressor 21 when the heat source device 10 is operating at maximum efficiency. The maximum efficiency frequency Yc [Hz] is the operating frequency of the compressor 21 when the coefficient of performance (COP) of the heat source device 110 reaches its maximum. The efficiency processing unit 133c reads the maximum efficiency frequency Yc from the storage device 50 and subtracts it from the reference operating frequency acquired by the anomaly detection unit 33b to obtain a subtraction value Yca. The efficiency processing unit 133c determines whether the subtraction value Yca is negative, that is, whether it is less than zero.

[0066] If the subtraction value Yca is less than 0, this means that the heat source unit 110 operates with a control value that is lower than an operating state with optimal operating time. Consequently, if the subtraction value Yca is less than 0, the efficiency processing unit 133c transmits an operating command with the maximum efficiency frequency Yc to the operating control unit 34, thereby causing the compressor 21 to operate at the maximum efficiency frequency Yc. This makes it possible to store a quantity of heat generated by the subtraction value Yca component in the storage tank 80.

[0067] When a preset time for the heat storage unit has elapsed after the transmission of the operating command at the maximum efficiency frequency Yc to the operating control unit 34, the efficiency processing unit 133c transmits a release command to the operating control unit 34 and controls the operating frequency of the compressor 21 to an operating frequency corresponding to the load. The release command here is an operating command to enable the compressor 21 to operate at the maximum efficiency frequency Yc. The preset time for the heat storage unit is determined according to the configuration settings, the installation environment, and other factors of the heat source system 200.

[0068] Furthermore, the heat source system 200 includes a load-side control unit 90, which controls the flow rate of the flow rate control pump 73. The load-side control unit 90 stores a plurality of preset flow rates in an internal memory or other memory (not shown) and controls the flow rates of the flow rate control pump 73 to their preset flow rates when the heat source system 110 is activated in fault-check mode. The command processing unit 32a of embodiment 2 is configured to acquire a flow rate after adjustment based on a control signal or other signals transmitted from the load-side control unit 90 to the flow rate control pump 73 when the load-side control unit 90 controls the flow rate of the flow rate control pump 73.

[0069] For example, the control unit 130 acquires in the example in Fig. 4. A throughput value of 100% is obtained when the load-side control unit 90 sets the throughput value of the flow rate control pump 73 to 100%. That is, the control unit 130 is configured to acquire equilibrium data in cooperation with the load-side control unit 90. Furthermore, the control unit 130 acquires, as in the example in Fig. Figure 4 shows the flow rate value Z3% when the load-side control unit 90 sets the flow rate value of the flow rate control pump 73 to Z3%. That is, the control unit 130 is configured to obtain a reference operating frequency in cooperation with the load-side control unit 90.

[0070] The control unit 30 and the load-side control device 90 can be configured to be connected via wired or wireless means for data communication. The load-side control device 90 can be configured to transmit a flow rate value to the control unit 30 after the flow rate of the flow control pump 73 has been adjusted. Furthermore, the control unit 30 can be configured to transmit an operating command containing the flow rate of the flow control pump 73 to the load-side control device 90, and the load-side control device 90 can be configured to adjust the flow rate of the flow control pump 73 according to the operating command from the control unit 30. In this case, the load-side control device 90 must contain a number of preset flow rates in internal memory or other storage media.

[0071] Fig. Figure 8 is a flowchart, the processing of the detection of an anomaly in the heat source system of an operation of the heat source system of Fig. 6 illustratively. The processing contents of the control unit 130, when the heat source device 110 is activated in normal operation, are described with reference to Fig. 4 together with Fig. 8 described. Processes similar to those in control unit 30 of embodiment 1 and reference numerals corresponding to those in Fig. 5 are identical, are used and their description is omitted. It should be noted that the processing, in which the heat source system creates 200 relationship data, is similar to that in embodiment 1 based on Fig. The processing described in section 3 is no longer necessary, and therefore its description is omitted.

[0072] If the operating mode determination unit 31 in step S102 in Fig. If step 3 determines that the operating mode is not a fault check mode (step S102 / No), the heat source device 10 is activated in a normal operating mode and performs a series of processes in steps S201 to S204. If the current operating frequency of the compressor 21 is outside the reference range (step S204 / No), the output device 45 is caused to output anomaly information (step S205).

[0073] On the other hand, if the current operating frequency of compressor 21 is within the reference range (step S204 / Yes), the anomaly detection unit 33b transmits the reference operating frequency to the efficiency processing unit 133c. Here, the anomaly detection unit 33b receives the reference operating frequency in the example in Fig. In step S203, a reference operating frequency Y3 [Hz] is defined with respect to the throughput value Z3% on graph G as relationship data. Therefore, the anomaly detection unit 33b transmits the reference operating frequency Y3 [Hz] to the efficiency processing unit 133c (step S301).

[0074] The efficiency processing unit 133c reads the maximum efficiency frequency Yc from the memory device 50 and subtracts the maximum efficiency frequency Yc from the reference operating frequency acquired by the anomaly detection unit 33b to obtain a subtraction value Yca. The efficiency processing unit 133c then determines whether the subtraction value Yca is less than 0 or not (step S302).

[0075] If the subtraction value Yca is not less than 0 (step S302 / No), the efficiency processing unit 133c returns to step S202. On the other hand, if the subtraction value Yca is less than 0 (step S302 / Yes), the efficiency processing unit 133c transmits an operating command with the maximum efficiency frequency Yc to the operating control unit 34. The operating control unit 34 causes the compressor 21 to operate at the maximum efficiency frequency Yc according to the operating command from the efficiency processing unit 133c (step S303).

[0076] Next, the efficiency processing unit 133c waits for the preset time for the heat storage to elapse (step S304 / No) and transmits a release command to the operating control unit 34 when the preset time for the heat storage has elapsed (step S304 / Yes). The operating control unit 34 controls the operating frequency of the compressor 21 to an operating frequency corresponding to the load according to the release command from the efficiency processing unit 133c (step S305) and returns to step S202.

[0077] The foregoing illustrated a case in which the anomaly detection unit 33b transmits a reference operating frequency to the efficiency processing unit 133c when the current operating frequency of the compressor 21 is within the reference range, but the present invention is not limited thereto. For example, the anomaly detection unit 33b can transmit not the reference operating frequency, but the current operating frequency of the compressor 21 to the efficiency processing unit 133c. The efficiency processing unit 133c can subtract the maximum efficiency frequency Yc from the current operating frequency of the compressor 21, acquired from the anomaly detection unit 33b, to obtain the subtraction value Yca, and causes the compressor 21 to operate at the maximum efficiency frequency Yc when the obtained subtraction value is less than 0.

[0078] As described above, the heat source system 200 receives the operating frequency of the compressor 21, which serves as a reference using the relationship data. This allows the heat source system 200 to monitor the operating state of the entire system, taking into account not only the heat source device 110 but also the load-side situation. Consequently, it can detect anomalies such as deterioration over time and equipment failure within the system. Furthermore, if the current operating frequency of the compressor 21 is within the reference range, the control unit 130 causes the compressor 21 to operate at a maximum efficiency frequency and store heat in the reservoir 80. This increases the service life of the heat source device 110 and improves the operating efficiency of the heat source system 200. Other effects are similar to those described in the aforementioned embodiment 1.

[0079] The aforementioned embodiments are preferred embodiments of the heat source system, but the technical scope of the present invention is not limited to these embodiments. For example, Fig. 1 and Fig. Figure 6 illustrates a case in which the heat source system 100 or 200 supplies heat or cooling energy to a load device 500. However, without being limited to this, the heat source system 100 or 200 can also be configured to supply heat or cooling energy to a plurality of load devices 500. That is, for example, a configuration can be assumed in which a plurality of load devices 500 are connected in parallel to the heat source system 100 or 200. In this case, the heat source system 100 or 200 can be configured to supply heat or cooling energy to a plurality of air conditioners, as the load devices 500. The heat source system 100 or 200 can be connected to a combination of at least two load devices 500—an air conditioner, an underfloor heating system, and a water heater—to supply them with heat or cooling energy.With such a configuration, the heat source system 100 or 200 can detect an anomaly in the system just as easily.

[0080] Fig. 1 and Fig. Figure 6 illustrates a case in which the load device 500 includes the electric valve 510; however, without being limited to this, the load device 500 can also be located without an electric valve 510. In this case, the electric valve 510 can be located outside the load device 500 or need not be included in the second heat medium circuit 70.

[0081] Fig. 1 and Fig. Figure 6 illustrates a case where the heat source system 100 or 200 includes the load-side heat exchanger 64, but without being limited to this, the heat source system 100 or 200 can also be configured without the load-side heat exchanger 64. That is, the heat source system 100 can include a heat medium circuit to which the supply line 61 and the supply line 71 are connected, the return line 62 and the return line 72 are connected, and the flow rate control pump 73, the heat source-side pump 63, the heat medium heat exchanger 22, and the load device 500 are connected to allow a heat medium to circulate. In this case, the heat source system 100 does not need to include a heat source-side pump 63.Furthermore, the heat source system 200 can include a heat medium circuit to which the supply line 81 and the supply line 71 are connected, the return line 82 and the return line 72 are connected, and the flow rate control pump 73, the storage tank 80 and the load device 500 are connected so that a heat medium can circulate. In this case, the storage tank 80 is provided between the heat medium heat exchanger 22 and the load device 500.

[0082] Fig. 1 and Fig. Figure 6 illustrates a case in which the heat source-side pump 63 is provided in the heat source device 10 or 110, but without being limited to this, the heat source-side pump 53 can also be provided outside the heat source device 10 or 110. The heat source device 10 or 110 can be equipped with a fan (not shown) attached to the heat source-side heat exchanger 24 to blow air towards the heat source-side heat exchanger 24. The fan can be equipped with a fan motor (not shown) which is driven, for example, by an inverter and is configured to rotate using the fan motor as an energy source. Fig. 1 and Fig. Figure 6 has illustrated a case in which the flow rate control pump 73 is provided on the return line 72, but without being limited to this, the flow rate control pump 73 can be provided on the supply line 71.

[0083] In the embodiments described above, a case has been illustrated in which the control unit 30 or 130 generates relationship data, but without being limited thereto, the relationship data can be generated outside the heat source system 100 or 200 and pre-stored in the storage device 50. In the embodiments described above, the graph data has been illustrated as the relationship data, but the relationship data is not limited to this. The relationship data can, for example, be tabular information in which the range of flow rates of the flow rate control pump 73 is mapped to the reference operating frequency.In this case, the control unit 30 or 130 can obtain the reference range from the table information instead of the reference operating frequency and determine whether the current operating frequency of the compressor 21 is within the reference range or not.

[0084] In the embodiments described above, a case has been illustrated in which the control unit 30 or 130 starts operation according to an operating signal from the input device 40, but the starting of the control unit 30 or 130 is not limited to this. The control unit 30 or 130 can, for example, start operation according to an instruction from an external device, such as a central control unit, a remote control of the load device 500, or other devices.

[0085] In the embodiments described above, an example was illustrated in which a preset operating frequency is assigned to a preset throughput value, but without being limited thereto, a plurality of preset operating frequencies can be assigned to a preset throughput value in the storage device 50. A priority sequence can be set for a plurality of preset operating frequencies assigned to a preset throughput value, so that the instruction processing unit 32a can acquire preset operating frequencies in descending priority order.This means that if the temperature determination unit 32b determines that the measured temperature does not reach the temperature equilibrium point, the command processing unit 32a can acquire a preset operating frequency with the next highest priority from the storage device 50 and transmit an operating command with the acquired preset operating frequency to the operating control unit 34.

[0086] In the embodiments described above, a case was illustrated in which the operation of the heat source system 100 or 200 is stopped when the current operating frequency of the compressor 21 is outside the reference range, but the present invention is not limited thereto. The control unit 30 or 130 can, for example, perform a control to reduce the operating frequency of the compressor 21 by a set amount in accordance with a certain degree of divergence between the current operating frequency of the compressor 21 and the reference operating frequency.

[0087] Furthermore, the heat source unit 10 or 110 can include a wireless communication unit that performs wireless communication with an external communication terminal. When an output command is transmitted from the anomaly detection unit 33b, the operating control unit 34 can transmit anomaly information to the external communication terminal via the wireless communication unit. This makes it possible to transmit anomaly information directly to the communication terminal of a service technician or other person repairing the heat source system 100 or 200, thus enabling rapid handling of an anomaly generated in the heat source system 100 or 200.

[0088] The heat source system 100 of embodiment 1 can include the load-side control device 90, as in the case of the heat source system 200 of embodiment 2. Conversely, the heat source system 200 of embodiment 2 can be configured without the load-side control device 90, as in the case of the heat source system 100 of embodiment 1. Furthermore, although the embodiments described above illustrate a case in which the input device 40 and the display device, which is an example of the output device 45, are provided separately, but are not limited to this, the heat source device 10 can include a touch panel that incorporates both of the input device 40 and the display device 40.

[0089] Function of the input device 40 and the function of the display device. Reference symbol list

[0090] 10, 110 Heat source unit 20 Refrigerant circuit 21 Compressor 22 Heat exchanger 23 Decompression unit 24 Heat source-side heat exchanger 25 Refrigerant pump 30, 130 Control unit 31 Operating mode determination unit 32 Data processing unit 32a Command processing unit 32b Temperature determination unit 32c Data creation unit 33 Normal operation processing unit 33a Operating command unit 33b Anomaly determination unit 34 Operating control unit 40 Input unit 45 Output unit 50 Storage unit 60 First heat exchanger circuit 61, 71, 81 Supply line 62, 72,82 Return line 63 Heat source-side pump 64 Load-side heat exchanger 65 Temperature sensor 70 Second heat medium circuit 73 Flow rate control pump 80 Storage tank 90 Load-side control device 100 Heat source system 133 Normal operation processing unit 133c Efficiency processing unit 160 First heat medium circuit 161 Heat storage circuit 162 Supply circuit 200 Heat source system 500 Load device 510 Electric valve 520 Heat exchanger

Claims

[1] Heat source system (200) that supplies heat energy or cooling energy to a load device (500), wherein the heat source system (200) comprises: a heat source device (10, 110) comprising a refrigerant circuit (20) with a compressor (21) configured to compress a refrigerant, a heat medium heat exchanger (22) configured to exchange heat between the refrigerant and a heat medium flowing therein from a load side, a decompression device (23) configured to decompress the refrigerant and a heat source-side heat exchanger (24) configured to exchange heat between the air and the refrigerant, which are connected via a refrigerant line (25) to allow the refrigerant to circulate; a flow rate control pump (73) which is configured to control a flow rate of the heat medium flowing through the load device (500); a control unit (30, 130) which is set up to control the operation of the compressor (21) and the flow rate control pump (73); a storage device (50) configured to store relationship data indicating a relationship between a flow rate value of the flow rate control pump (73) and an operating frequency of the compressor (21), and a temperature sensor (65) which is configured to measure the temperature of the heat medium, wherein the control unit (30, 130) includes an anomaly detection unit (33b) which a reference operating frequency is obtained, which serves as a reference for the operating frequency of the compressor (21), with reference to the relationship data of a current flow rate value of the flow rate control pump (73), compares a current operating frequency of the compressor (21) with the obtained reference operating frequency, and determines whether an anomaly occurs in the system or not, and a data processing unit (32) which, after the flow rate control pump (73) has been operated at a preset flow rate value, controls the operating frequency of the compressor (21), The operating frequency of the compressor (21) is linked to the preset throughput value at a time when the measured temperature, which is measured by the temperature sensor (65), reaches a temperature equilibrium point, and the linked data set stores as balance data in the storage device (50), the data processing unit (32) comprises a data generation unit (32c) that generates the relationship data based on the balance data stored in the memory (50). [2] Heat source system (200) according to claim 1, wherein the anomaly detection unit (33b) determines that an anomaly occurs in the system when the current operating frequency of the compressor (21) is outside a reference range which is determined centered on the reference operating frequency. [3] Heat source system (200) according to claim 2, wherein the reference range is a range of being greater than a value obtained by multiplying the reference operating frequency by a lower limit determination rate less than 1 and of being less than a value obtained by multiplying the reference operating frequency by an upper limit determination rate greater than 1. [4] Heat source system (200) according to one of claims 1 to 3, further comprising a storage container which is provided between the heat medium heat exchanger (22) and the load device (500), wherein The control unit (30, 130) includes an efficiency processing unit which, when the anomaly detection unit (33b) determines that the system is in a normal state, causes the compressor (21) to operate at a maximum efficiency frequency, which is an operating frequency of the compressor (21) when the heat source device (10, 110) is operating at maximum efficiency, in order to cause the storage tank to store heat. [5] Heat source system (200) according to any one of claims 1 to 4, further comprising: a supply line through which a heat medium flows from the heat exchanger (22); a return line through which a heat medium flows into the heat exchanger (22); and where the temperature sensor (65) is provided and configured on the supply line to measure the temperature of the heat medium flowing through the supply line, the data processing unit (32) changes the flow rate value of the flow rate control pump (73) to the two or more preset flow rates and for each preset flow rate value of the flow rate control pump, the operating frequency of the compressor (21) changes, the operating frequency of the compressor (21) is assigned to the preset throughput value at that time when the temperature measured by the temperature sensor (65) reaches the temperature equilibrium point, and stores the associated data set as balance data in the storage device (50), and the data creation unit (32c) creates the relationship data based on the two or more balance data elements stored in the storage device (50). [6] Heat source system (200) according to any one of claims 1 to 5, wherein the data creation unit (32c) creates data of a graph that connects the equilibrium data as relationship data. [7] Heat source system (200) according to any one of claims 1 to 6, further comprising a notification device which reports when the anomaly detection unit (33b) determines that an anomaly is occurring, wherein the anomaly information indicates, using at least one of sound and speech, that the system is in an abnormal state. [8] Heat source system (200) according to any one of claims 1 to 7, further comprising a display device which, when the anomaly detection unit (33b) determines that an anomaly is occurring, displays the anomaly information indicating that the system is in an abnormal state using at least one of characters and images.

Images