Control method, control device and electronic equipment for a heating system

Abstract

The application provides a control method and device of a heating system and electronic equipment, the method comprising: obtaining a first water system state of the heating system in an operation stage; determining whether the first water system state meets a first preset condition or a second preset condition, wherein the first preset condition comprises: an increase of a high-pressure temperature being greater than or equal to a preset increase, and a water temperature difference being less than or equal to a first preset water temperature difference, and the second preset condition comprises: the water temperature difference being greater than or equal to a second preset water temperature difference; in a case where a determination result indicates that the first water system state meets the first preset condition and / or the second preset condition, determining that the heating system is waterless circulation; and in a case where the determination result indicates that the first water system state does not meet the first preset condition and the second preset condition, determining that the heating system is water circulation, so that the risk of heating device abnormality caused by water pump dry running wear can be reduced.

Description

Technical Field

[0001] This invention relates to the field of heating technology, and more specifically, to a control method, control device, computer-readable storage medium, processor, and electronic device for a heating system. Background Technology

[0002] Users in northern regions primarily use heating systems, with cooling as a secondary function, and typically consider cost-effective heaters to meet their winter heating needs. To improve overall cost-effectiveness, traditional heaters often omit the standard water flow switch found in conventional heating and cooling units, replacing it with an optional feature or eliminating it entirely. This can lead to the heater's inability to quickly identify the water system's idling state during installation, commissioning, and operation. This increases the risk of the water pump motor burning out due to insufficient heat dissipation, as well as the risk of heater malfunctions due to dry running and pump wear, ultimately affecting the heater's operational reliability and the user's heating needs. Summary of the Invention

[0003] The main objective of this invention is to provide a control method, control device, computer-readable storage medium, processor, and electronic device for a heating system, so as to at least solve the problem in the prior art that the heating system cannot quickly identify when there is no water circulation, which affects the reliability of the heating system and the user's heating needs.

[0004] To achieve the above objectives, according to one aspect of the present invention, a control method for a heating system is provided, comprising: acquiring a first water system state during the operation phase of the heating system, the first water system state including: the increase in high-pressure temperature of a first heat exchanger in the heating system within a first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger within the first preset time period, wherein the high-pressure temperature is the saturation temperature corresponding to the exhaust pressure detected by the cold medium passing through the first heat exchanger within the first preset time period; determining whether the first water system state satisfies a first preset condition or a second preset condition, wherein the first preset condition includes: the increase in high-pressure temperature being greater than or equal to a predetermined value. The system is configured such that the water temperature difference is less than or equal to a first preset water temperature difference, and the second preset condition includes: the water temperature difference is greater than or equal to the second preset water temperature difference. If the judgment result indicates that the first water system state meets the first preset condition and / or the second preset condition, the heating system is determined to be in a state of no water circulation, and a shutdown signal is output. The shutdown signal is used to shut down the heating system. Here, no water circulation means that the water system state of the heating system is in a state of no water, and the water system state includes at least the first water system state. If the judgment result indicates that the first water system state does not meet either the first preset condition or the second preset condition, the heating system is determined to be in a state of water circulation. Water circulation means that the water system state of the heating system is in a state of water.

[0005] Optionally, obtaining the increase in high-pressure temperature includes: obtaining a first pressure of the cold medium, wherein the first pressure is the pressure value of the cold medium detected by a pressure sensor at a first time point, the pressure sensor being connected to the inlet of the first heat exchanger, and the first time point being used as the start time point of a first preset time period; obtaining a second pressure of the cold medium, wherein the second pressure is the pressure value of the cold medium detected by the pressure sensor at a second time point, the second time point being after the first time point, and the second preset time point being used as the end time point of the first preset time period; determining a first high-pressure temperature corresponding to the first pressure and a second high-pressure temperature corresponding to the second pressure based on the first pressure, the second pressure, and a preset relationship, wherein the preset relationship is used to characterize the relationship between the pressure value of the cold medium and the saturation temperature of the cold medium; and calculating the difference between the first high-pressure temperature and the second high-pressure temperature to obtain the increase in high-pressure temperature.

[0006] Optionally, obtaining the water temperature difference includes: obtaining a first water temperature, wherein the first water temperature is the water temperature collected by a first temperature sensor in the heating system at a first preset time point, and the first preset time point is the start time point of a first preset time period; obtaining a second water temperature, wherein the second water temperature is the water temperature collected by a second temperature sensor in the heating system at a second preset time point, and the second preset time point is used as the end time point of the first preset time period; and calculating the difference between the first water temperature and the second water temperature to obtain the water temperature difference.

[0007] Optionally, before obtaining the first water system state during the operation phase of the heating system, the above control method further includes: during the startup phase of the heating system and when the water pump in the heating system is in a closed state, determining whether a flow switch is set in the second water system state, the water system state also including the second water system state; if the determination result indicates that there is no flow switch in the second water system state, sending a first start signal to the compressor in the heating system to start the compressor, obtaining the third high-pressure temperature of the first heat exchanger, wherein the third high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at the third pressure under the third pressure obtained at the third time point, and the third pressure is the pressure value at the third time point during the startup phase; if the determination result indicates that there is a flow switch in the second water system state, controlling the compressor and water pump to start; determining whether the third high-pressure temperature is greater than or equal to a preset high-pressure temperature; if the determination result indicates that the third high-pressure temperature is greater than or equal to the preset high-pressure temperature, sending a second start signal to the water pump to start the water pump.

[0008] Optionally, the above control method further includes: acquiring the status of the second water system during the startup phase of the heating system, the status of the second water system including: the drop in high-pressure temperature of the first heat exchanger in the heating system during a second preset time period, wherein the pressure values ​​corresponding to the start and end times of the second preset time period are different; determining whether the drop in high-pressure temperature is greater than or equal to a preset drop, wherein if the drop in high-pressure temperature is greater than or equal to the preset drop, it is determined that the heating system is in water circulation.

[0009] Optionally, the above control method further includes: if the drop in high-pressure temperature is less than a preset drop, determining that the heating system is in a state of no water circulation, and sending a shutdown signal to the water pump to shut it down.

[0010] Optionally, the second water system status of the heating system during the startup phase is obtained, including: obtaining the fourth high-pressure temperature of the first heat exchanger, wherein the fourth high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at the fourth pressure, and the fourth pressure is the pressure value of the exhaust pressure of the cold medium passing through the first heat exchanger at the moment of pump startup; obtaining the fifth high-pressure temperature of the first heat exchanger, wherein the fifth high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at the fifth pressure, and the fifth pressure is the pressure value of the exhaust pressure of the cold medium passing through the first heat exchanger after a preset time of pump startup; and calculating the difference between the fourth high-pressure temperature and the fifth high-pressure temperature to obtain the decrease in high-pressure temperature.

[0011] To achieve the above objectives, according to one aspect of the present invention, a control device for a heating system is provided, comprising: a first acquisition module, configured to acquire a first water system state during the operation phase of the heating system, the first water system state including: the increase in high-pressure temperature of a first heat exchanger in the heating system within a first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger within the first preset time period, wherein the high-pressure temperature is the saturation temperature corresponding to the exhaust pressure of the cold medium passing through the first heat exchanger detected within the first preset time period; and a first judgment module, configured to judge whether the first water system state satisfies a first preset condition or a second preset condition, wherein the first preset condition includes: the increase in high-pressure temperature being greater than or equal to a preset increase. The first determining module is used to determine that the heating system is in a state of no water circulation when the judgment result indicates that the first water system state meets the first preset condition and / or the second preset condition, and outputs a shut-off signal. The shut-off signal is used to shut down the heating system. Here, no water circulation means that the water system state of the heating system is in a state of no water, and the water system state includes at least the first water system state. The second determining module is used to determine that the heating system is in a state of water circulation when the judgment result indicates that the first water system state does not meet the first preset condition and the second preset condition. Water circulation means that the water system state of the heating system is in a state of water.

[0012] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform the control method of the heating system described above.

[0013] According to another aspect of the present invention, an electronic device is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include a control method for performing the above-described heating system.

[0014] By applying the technical solution of this invention, the first water system state during the operation of the heating system is obtained. This first water system state includes: the increase in high-pressure temperature of the first heat exchanger in the heating system within a first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger within the first preset time period. The system then determines whether the first water system state meets a first preset condition or a second preset condition. The first preset condition includes: the increase in high-pressure temperature is greater than or equal to a preset increase, and the water temperature difference is less than or equal to a first preset water temperature difference. The second preset condition includes: the increase in water temperature difference is greater than or equal to a second preset water temperature difference. If the state of the first water system does not meet the first and second preset conditions, the heating system is determined to be in a state of water circulation, and the heating system continues to operate normally. If the state of the first water system meets the first and / or second preset conditions, the heating system is determined to be in a state of no water circulation. The above-mentioned control method of the heating system can promptly identify whether the water pump in the water system is in an idling state. This not only avoids the situation where the water pump motor cannot dissipate heat in a state of no water circulation, but also reduces the risk of heater malfunction due to wear and tear caused by dry running of the water pump, improves the reliability of heater operation, and meets the heating needs of users. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 A hardware structure block diagram of a mobile terminal for executing a heating system control method according to an embodiment of the present invention is shown; Figure 2 A flowchart illustrating a control method for a heating system according to an embodiment of the present invention is shown. Figure 3 The diagram shows a control flow chart of an operation phase in the control method for a heating system provided in an embodiment of the present invention. Figure 4 The diagram shows a control flow chart of the start-up phase in the control method of the heating system provided in an embodiment of the present invention. Figure 5 This diagram illustrates another control flow chart of the start-up phase in the control method for a heating system provided in an embodiment of the present invention. Figure 6 This diagram illustrates a control flow chart of another operating phase in the control method for a heating system provided in an embodiment of the present invention. Figure 7 A schematic diagram of a heating system according to an embodiment of the present invention is shown; Figure 8A schematic diagram of the structure of a control device for a heating system according to an embodiment of the present invention is shown.

[0016] The above figures include the following reference numerals: 10. First heat exchanger; 20. Compressor; 30. Pressure sensor; 40. Water pump; 50. Second temperature sensor; 60. First temperature sensor; 70. Four-way valve; 80. Expansion valve; 90. Second heat exchanger. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] As described in the background section, conventional heaters in the prior art often omit the water flow switch, a standard feature of traditional heating and cooling units, in order to improve the overall cost-effectiveness. This results in the heater being unable to quickly identify the idling state of the water system during actual installation, commissioning, and operation. This increases the risk of the water pump motor burning out due to insufficient heat dissipation, as well as the risk of heater malfunctions due to dry running and wear of the water pump. Consequently, it affects the reliability of the heater's operation and the user's heating needs. To address the problem of the inability to quickly identify when the water system of the heater is without water circulation, thus affecting the reliability of the heater's operation and the user's heating needs, embodiments of the present invention provide a control method, control device, computer-readable storage medium, processor, and electronic device for a heating system.

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] The methods and embodiments provided in this invention can be executed on a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a heating system control method according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0023] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the heating system control method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0024] This embodiment provides a control method for a heating system that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0025] Figure 2 This is a flowchart of a control method for a heating system according to an embodiment of the present invention. Figure 2 As shown, the method includes the following steps: Step S11: Obtain the first water system status of the heating system during the operation phase. The first water system status includes: the rise in the high pressure temperature of the first heat exchanger in the heating system during the first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger during the first preset time period. The high pressure temperature is the saturation temperature corresponding to the exhaust pressure of the cold medium passing through the first heat exchanger during the first preset time period. Specifically, by setting the aforementioned preset pressure range, the saturation temperature at pressures meeting the preset pressure range can be defined as the high-pressure temperature. During the operation of the heating system, the rise in the saturation temperature of the heating system and the cold medium passing through the first heat exchanger under the exhaust pressure detected within the first preset time period is obtained, as well as the water temperature difference between the inlet and outlet of the first heat exchanger within the first preset time period. Since the exhaust pressures at the start and end points of the first preset time period are different, the corresponding saturation temperatures of the cold medium are also different. Therefore, the saturation temperature of the cold medium will have a certain rise within the first preset time period.

[0026] Specifically, the aforementioned refrigerant can be R410A refrigerant, wherein R410A refrigerant is a mixed refrigerant comprising a mixture of dichloromethane and pentafluoroethane. However, it should be noted that the refrigerant in this invention is not limited to the above-mentioned types, and those skilled in the art do not make specific limitations.

[0027] Step S12: Determine whether the state of the first water system meets the first preset condition or the second preset condition. The first preset condition includes: the increase in high pressure temperature is greater than or equal to the preset increase, and the water temperature difference is less than or equal to the first preset water temperature difference. The second preset condition includes: the water temperature difference is greater than or equal to the second preset water temperature difference. Specifically, by determining whether the state of the first water system satisfies the condition that the saturation temperature rise of the cold medium passing through the first heat exchanger is greater than or equal to the preset rise under a pressure within a preset pressure range, and the water temperature difference is less than or equal to the first preset water temperature difference, or the water temperature difference is greater than or equal to the second preset water temperature difference, it can be determined whether the water system state in the heating system is without water circulation or with water circulation.

[0028] Specifically, the first heat exchanger mentioned above can be any one of a shell-and-tube heat exchanger, a plate heat exchanger, a shell-and-tube heat exchanger, and a high-efficiency tank. This invention does not make any specific limitation, but the type of heat exchanger mentioned above should be a water-fluoride heat exchanger.

[0029] Step S13: If the judgment result indicates that the state of the first water system meets the first preset condition and / or the second preset condition, determine that the heating system is in a state of no water circulation and output a shutdown signal. The shutdown signal is used to shut down the heating system. Here, no water circulation means that the water system state of the heating system is in a state of no water. The water system state includes at least the first water system state. Specifically, if the judgment result in step S12 indicates that the first water system state meets the first preset condition and / or the second preset condition, it can be determined that the water system state of the heating system is a waterless state. At this time, in order to prevent the water pump motor in the heating system from being unable to dissipate heat and from dry running and wearing out in the state of no water circulation, a shutdown signal is output to the heating system to shut down the heating system.

[0030] Step S14: If the judgment result indicates that the first water system state does not meet the first preset condition and the second preset condition, the heating system is determined to be in a water circulation state. Water circulation means that the water system state of the heating system is in a water state.

[0031] Specifically, if the judgment result in step S12 indicates that the first water system status does not meet the first preset condition and the second preset condition, it can be determined that the water system status of the heating system is in a water-filled state. At this time, there is no phenomenon of water pump running dry in the heating system, and the heating system can continue to operate.

[0032] This embodiment allows for the determination of whether the heating system is circulating water or not by acquiring the first water system status during operation and judging whether the first water system status meets a first preset condition or a second preset condition. Specifically, if the first water system status does not meet either the first or second preset condition, the heating system is determined to be circulating water, and the system continues to operate normally. If the first water system status meets both the first and / or second preset conditions, the heating system is determined to be circulating water or not. This control method can promptly identify whether the water pump in the water system is running dry, avoiding the situation where the pump motor cannot dissipate heat in a water-free state, reducing the risk of heater malfunctions due to pump wear from dry running, improving heater reliability, and meeting user heating needs.

[0033] In some alternative implementations, such as Figure 3 As shown, obtaining the increase in high-pressure temperature in step S11 above also includes: Step S111: Obtain the first pressure of the exhaust pressure of the cold medium, wherein the first pressure is the pressure value of the cold medium detected by the pressure sensor at the first time point. The pressure sensor is connected to the inlet of the first heat exchanger, and the first time point is taken as the starting time point of the first preset time period. Specifically, at a certain moment during the start-up phase of the heating system, the first pressure value of the cold medium exhaust pressure detected by the pressure sensor is obtained. This moment is the starting point of the first preset time period. The pressure sensor is connected to the inlet of the first heat exchanger and is used to detect the pressure of the cold medium in real time.

[0034] Step S112: Obtain the second pressure of the exhaust pressure of the cold medium, wherein the second pressure is the pressure value of the cold medium detected by the pressure sensor at the second time point, and the second time point is after the first time point, and the second preset time point is taken as the end time point of the first preset time period. Specifically, at another moment after the first preset time period, the second pressure value of the exhaust pressure of the cold medium, which is detected by the pressure sensor, is obtained. This other moment is the end time of the first preset time period. At the two different moments when the pressure value is obtained, the pressure of the cold medium is not the same.

[0035] Step S113: Based on the first pressure, the second pressure, and the preset relationship, determine the first high-pressure temperature corresponding to the first pressure and the second high-pressure temperature corresponding to the second pressure, wherein the preset relationship is used to characterize the relationship between the pressure value of the cold medium and the saturation temperature of the cold medium. Specifically, based on historical data, the relationship between the exhaust pressure of different refrigerants and their saturation temperature can be summarized to obtain the aforementioned preset relationship. This preset relationship can then be stored in a table. In application, after detecting the exhaust pressure of the refrigerant, the corresponding saturation temperature can be directly obtained by looking up the table. That is, the saturation temperature of the refrigerant under the first pressure condition is the first high-pressure temperature, and the saturation temperature of the refrigerant under the second pressure condition is the second high-pressure temperature. By using the correspondence between the exhaust pressure and the saturation temperature of the refrigerant (i.e., the aforementioned high-pressure temperature), the first and second high-pressure temperatures can be obtained.

[0036] Step S114: Calculate the difference between the first high-pressure temperature and the second high-pressure temperature to obtain the increase in high-pressure temperature.

[0037] Specifically, the difference between the first high-pressure temperature and the second high-pressure temperature obtained in step S113 is used to obtain the difference between the two. This difference is the increase in the high-pressure temperature. The above condition is used to determine whether the water system in the heating system in step S13 and step S14 is in a state of no water circulation or a state of water circulation.

[0038] In some optional implementations, obtaining the water temperature difference includes: obtaining a first water temperature, wherein the first water temperature is the water temperature collected by a first temperature sensor in the heating system at a first preset time point, and the first preset time point is the start time point of a first preset time period; obtaining a second water temperature, wherein the second water temperature is the water temperature collected by a second temperature sensor in the heating system at a second preset time point, and the second preset time point is used as the end time point of the first preset time period; calculating the difference between the first water temperature and the second water temperature to obtain the water temperature difference, which is used to determine whether the water system in the heating system is in a state of no water circulation or a state of water circulation.

[0039] Specifically, in the step of obtaining the above-mentioned water temperature difference, the first water temperature collected by the first temperature sensor in the heating system at the start time of the first preset time period and the second water temperature collected by the second temperature sensor in the heating system at the end time of the first preset time period are obtained. The difference between the first water temperature and the second water temperature is calculated to obtain the water temperature difference. This water temperature difference is used to determine whether the water system in the heating system is in a state of no water circulation or a state of water circulation.

[0040] In some alternative implementations, such as Figure 4 As shown, before obtaining the first water system state of the heating system during its operation, the control method further includes: Step S21: During the start-up phase of the heating system and when the water pump in the heating system is off, determine whether a flow switch is installed in the second water system. Specifically, before the heating system is put into operation, the control method of the heating system also includes a startup phase. During the startup phase, with the water pump in the heating system in a closed state, the built-in control board in the second water system will detect whether there is a flow switch signal in the heating system. The flow switch signal is used to indicate that there is a flow switch in the heating system. If there is a flow switch in the heating system, the built-in control board will detect the flow switch signal. If there is no flow switch, the built-in control board will not receive the flow switch signal.

[0041] Step S22: If the judgment result indicates that there is no water flow switch in the second water system, a first start signal is sent to the compressor in the heating system to start the compressor and obtain the third high pressure temperature of the first heat exchanger. The third high pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at the third pressure under the third pressure of the exhaust pressure detected at the third time point. The third pressure is the pressure value at the third time point in the start-up phase. Specifically, if the built-in control board in the second water system does not receive a flow switch signal, it indicates that the heating system is not connected to a flow switch. In this case, the compressor in the heating system sends a first start signal to start the compressor, thereby obtaining the saturation temperature of the cold medium passing through the first heat exchanger at the third pressure, i.e., the aforementioned third high-pressure temperature. When the heating system is connected to a flow switch, the switch is always in the open state before the water pump starts. It can be understood as a flip-type switch. Taking the pipe connected to the water pump outlet as an example, in the absence of water, the switch is perpendicular to the pipe. When water flows through, the water flow will drive the flip-type switch to rotate 90°, so that the flow switch closes. At this time, the built-in control board will detect the closing signal of the flow switch, indicating that the heating system is not connected to a flow switch.

[0042] Step S23: If the judgment result indicates that there is a water flow switch in the second water system, control the compressor and water pump to start. Specifically, if the second water system is equipped with a flow switch, the built-in control board will receive the flow switch signal and determine that a flow switch is connected inside the heating system. When water flows through the flow switch, the flow switch will close, and the built-in control board will receive the flow switch signal and be in a closed state. At this time, the heating system continues to operate. If the water flow in the heating system is small or there is no water flow, which is insufficient to close the flow switch, the heating system is in a fault state and will stop working, reflecting the fault.

[0043] Step S24: Determine whether the third high-pressure temperature is greater than or equal to the preset high-pressure temperature; Specifically, the third high-pressure temperature is compared with the preset high-pressure temperature to determine whether it is greater than or equal to the preset high-pressure temperature.

[0044] Step S25: If the third high-pressure temperature is determined to be greater than or equal to the preset high-pressure temperature, a second start signal is sent to the water pump in the heating system to start the water pump.

[0045] Specifically, when the third high-pressure temperature is determined to be greater than or equal to the preset high-pressure temperature, a second start signal is sent to the water pump in the heating system to start the water pump, so that the water system inside the heating system can circulate water.

[0046] In some optional embodiments, the heating system control method further includes: acquiring the state of the second water system during the startup phase of the heating system, the state of the second water system including: the drop in the high-pressure temperature of the first heat exchanger in the heating system during a second preset time period, wherein the pressure values ​​corresponding to the start and end times of the second preset time period are different; determining whether the drop in high-pressure temperature is greater than or equal to a preset drop, wherein if the drop in high-pressure temperature is greater than or equal to the preset drop, it is determined that the heating system is in water circulation.

[0047] Specifically, in the step of obtaining the second water system state of the heating system during the startup phase, during the startup phase of the heating system, the saturation temperature of the heating system at a certain moment is obtained, corresponding to the exhaust pressure detected by the cold medium passing through the first heat exchanger within a first preset time period. After a second preset time period, the saturation temperature of the heating system at another moment is obtained, corresponding to the exhaust pressure detected by the cold medium passing through the first heat exchanger within the first preset time period. The exhaust pressures at these two different moments are different, and the corresponding saturation temperatures of the cold medium are also different. Therefore, the saturation temperature of the cold medium will have a certain decrease during the second preset time period. Thus, by subtracting the saturation temperatures of the cold medium at the two moments, the decrease in the high-pressure temperature is obtained. If the decrease is greater than or equal to the preset decrease, it can be determined that the water system state of the heating system is a water-containing state. At this time, there is no phenomenon of water pump running dry in the heating system, and the heating system continues to operate normally. The preset decrease can be determined by the decrease in the saturation temperature of the cold medium during a certain time period of the historical startup phase of the heating system. This embodiment of the invention does not specifically limit this.

[0048] In some alternative implementations, if the drop in high-pressure temperature is less than a preset drop, the heating system is determined to be without water circulation, and a shutdown signal is sent to the water pump to shut it down.

[0049] Specifically, if the above-mentioned decrease is less than or equal to the preset decrease, it can be determined that the water system of the heating system is in a waterless state. At this time, in order to prevent the water pump motor in the heating system from being unable to dissipate heat and from dry running and wearing out in the state of no water circulation, a shutdown signal is output to the water pump and compressor in the heating system to shut down the heating system.

[0050] In some optional embodiments, obtaining the second water system state of the heating system during the startup phase further includes: obtaining the fourth high-pressure temperature of the first heat exchanger, wherein the fourth high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at a fourth pressure, and the fourth pressure is the pressure value of the exhaust pressure of the cold medium passing through the first heat exchanger at the moment of pump startup; obtaining the fifth high-pressure temperature of the first heat exchanger, wherein the fifth high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at a fifth pressure, and the fifth pressure is the pressure value of the exhaust pressure of the cold medium passing through the first heat exchanger after a preset time since pump startup; and calculating the difference between the fourth high-pressure temperature and the fifth high-pressure temperature to obtain the decrease in high-pressure temperature.

[0051] Specifically, in the step of obtaining the second water system state of the heating system during the startup phase, the saturation temperature of the cold medium passing through the first heat exchanger at the moment of pump startup is obtained, i.e., the fourth high-pressure temperature mentioned above. The saturation temperature of the cold medium passing through the first heat exchanger after a preset time of pump startup is obtained, i.e., the fifth high-pressure temperature mentioned above. The difference between the fourth high-pressure temperature and the fifth high-pressure temperature is calculated to obtain the drop in high-pressure temperature. The above conditions are used in the step of determining whether the water system state in the heating system is in a state of no water circulation or a state of water circulation.

[0052] For example, the control method of the heating system in this embodiment of the invention includes: firstly, entering the start-up phase of the heating system, such as... Figure 5As shown, during the startup phase, it is first necessary to determine whether a flow switch is installed in the current water system while the water pump in the heating system is off. The flow switch signal indicates that a flow switch is present in the heating system. If the flow switch signal is received, it means that a flow switch exists within the heating system, and the heating system is normally controlled to operate the unit and water pump according to the flow switch status. If the flow switch signal is not received, it means that a flow switch does not exist within the heating system, and the heating system operates the unit and water pump according to the no-flow-switch status. A first startup signal is sent to the compressor in the heating system to start the compressor and obtain the third high-pressure temperature of the first heat exchanger. The third high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at the third pressure. If the third high-pressure temperature is greater than or equal to the preset high-pressure temperature, a second startup signal is sent to the water pump in the heating system to start the water pump, enabling water circulation within the heating system. After the water pump starts, the second high-pressure temperature is obtained. Within a preset time period, the high-pressure temperature drop of the first heat exchanger in the heating system is measured. The exhaust pressure at the start and end points of this second preset time period differs, resulting in different saturation temperatures of the refrigerant. Therefore, the saturation temperature of the refrigerant will decrease within the second preset time period. When the high-pressure temperature drop is less than the preset drop, the water system of the heating system is determined to be in a state of no water circulation, and the unit and water pump are shut down. A fault is also reported to the user. This judgment prevents the water pump motor in the heating system from failing to dissipate heat and running dry, causing wear. A shutdown signal is sent to the water pump and compressor in the heating system to shut it down. When the dry temperature drop is greater than or equal to the preset drop, the unit is determined to have water circulation and is operating normally. At this time, there is no water pump running dry in the heating system, and the heating system continues to operate normally. After the above heating system startup phase ends, the heating system enters the operation phase, such as... Figure 6As shown, during the heating system's operation, within a first preset time period, it is determined whether the state of the first water system meets the first preset condition and / or the second preset condition. If the state of the first water system meets either preset condition, it is determined that the unit has no water circulation, the unit and water pump are shut down, and a fault is reported to remind the user. If the state of the first water system does not meet either the first or the second preset condition, it is determined that the unit's water circuit is normal, and the unit continues to operate normally. At the first preset time point, the first pressure value of the refrigerant is obtained by a pressure sensor connected to the inlet of the first heat exchanger to detect the exhaust pressure of the refrigerant in real time. At the second preset time point, the second pressure value of the refrigerant is obtained by a pressure sensor after the first time point, and the pressure value of the refrigerant at the second time point is different from the pressure value of the refrigerant at the first time point. The first pressure and the second pressure have a preset relationship with the first high-pressure temperature and the second high-pressure temperature, respectively. This preset relationship can be obtained by looking up a table, that is, the saturation temperature corresponding to the refrigerant under the first pressure condition is the first high-pressure temperature. The second high-pressure temperature is the saturation temperature of the cold medium under the second pressure condition. By understanding the correspondence between pressure and the saturation temperature of the cold medium (i.e., the high-pressure temperature), the first and second high-pressure temperatures can be obtained. The difference between the first and second high-pressure temperatures is the increase in high-pressure temperature. The system then determines whether the first water system state meets the first or second preset condition. The first preset condition includes: the increase in high-pressure temperature is greater than or equal to a preset increase, and the water temperature difference is less than or equal to the first preset water temperature difference. The second preset condition includes: the water temperature difference is greater than or equal to the second preset water temperature difference. If neither the first nor the second preset condition is met, the heating system is determined to have water circulation. If the first water system state meets the first and / or the second preset condition, the heating system is determined to be in a waterless state. In this case, to prevent the water pump motor in the heating system from failing to dissipate heat and experiencing dry running and wear, a shutdown signal is sent to the heating system to shut it down.

[0053] The control method of the heating system described above can determine whether the heating system is in a no-water-flow switch state and promptly identify whether the water pump in the water system is running dry. This not only avoids the situation where the water pump motor cannot dissipate heat when there is no water circulation, but also reduces the risk of heater malfunctions caused by dry running and wear of the water pump, improves the reliability of heater operation, and meets the heating needs of users.

[0054] For example, the operating principle of a heating system, such as Figure 7As shown, the heating system includes: a first heat exchanger 10, a second heat exchanger 90, a four-way valve 70, a pressure sensor 30, a compressor 20, an expansion valve 80, a first temperature sensor 60, a second temperature sensor 50, and a water pump 40. When the heating system starts, the compressor 20 discharges gaseous refrigerant. The gaseous refrigerant passes through the pressure sensor 30 and the four-way valve 70 and enters the first heat exchanger 10. At this time, the pressure sensor 30 can detect the pressure value of the gaseous refrigerant. In the first heat exchanger 10, the gaseous refrigerant is condensed into high-pressure liquid refrigerant. At this time, the first temperature sensor 60 and the second temperature sensor 50 can detect the temperature at the inlet and outlet of the first heat exchanger and obtain the temperature difference. The high-pressure liquid refrigerant passes through the expansion valve 80 and enters the second heat exchanger 90 to absorb heat and evaporate, becoming gaseous refrigerant again. The gaseous refrigerant returns to the compressor 20 through the four-way valve 70. The above process is repeated during the start-up and operation of the heating system.

[0055] Specifically, the operating principle of the above heating system does not limit the form of the heat exchanger on the heat source side; it can be used for both water-cooled and hot water systems. This invention does not impose any specific limitations.

[0056] Through the above cycle, some characteristic parameters required in the heating system control method can be obtained, such as the rise and fall of high-pressure temperature and the target water temperature difference, which further support the operation of the heating system control method.

[0057] This invention also provides a control device for a heating system. It should be noted that the control device for the heating system in this invention can be used to execute the control method for a heating system provided in this invention. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0058] The control device for the heating system provided in the embodiments of the present invention will be described below.

[0059] Figure 8 This is a schematic diagram of a control device for a heating system according to an embodiment of the present invention. Figure 8 As shown, the device includes: The first acquisition module 100 is used to acquire the first water system status of the heating system during the operation phase. The first water system status includes: the rise in the high pressure temperature of the first heat exchanger in the heating system during the first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger during the first preset time period. The high pressure temperature is the saturation temperature corresponding to the exhaust pressure of the cold medium passing through the first heat exchanger during the first preset time period. The first judgment module 200 is used to judge whether the state of the first water system meets the first preset condition or the second preset condition. The first preset condition includes: the increase in high pressure temperature is greater than or equal to the preset increase, and the water temperature difference is less than or equal to the first preset water temperature difference. The second preset condition includes: the increase in water temperature difference is greater than or equal to the second preset water temperature difference. The first determining module 300 is used to determine that the heating system is in a state of no water circulation when the determination result indicates that the state of the first water system meets the first preset condition and / or the second preset condition, and output a shut-off signal. The shut-off signal is used to shut down the heating system. Here, no water circulation means that the water system state of the heating system is in a state of no water, and the water system state includes at least the first water system state. The second determining module 400 is used to determine that the heating system is in a water circulation state when the judgment result indicates that neither the first preset condition nor the second preset condition is met. Water circulation means that the water system state of the heating system is in a water state.

[0060] In this embodiment, the first acquisition module 100 can acquire the first water system status of the heating system during its operation. The first water system status includes: the increase in high-pressure temperature of the first heat exchanger in the heating system within a first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger within the first preset time period. The first judgment module 200 determines whether the first water system status meets a first preset condition or a second preset condition. The first preset condition includes: the increase in high-pressure temperature is greater than or equal to a preset increase, and the water temperature difference is less than or equal to a first preset water temperature difference. The second preset condition includes: the increase in water temperature difference is greater than or equal to a second preset water temperature difference. If neither the first nor the second preset condition is met, the second determining module 400 determines that the heating system is in a water circulation state and controls the heating system to continue operating normally. If the first water system state is determined to meet the first and / or the second preset condition, the first determining module 300 determines that the heating system is in a waterless circulation state and controls the heating system to shut down. The control device of the heating system can promptly identify whether the water pump in the water system is running dry, which not only avoids the situation where the water pump motor cannot dissipate heat in a waterless state, but also reduces the risk of heater malfunction due to wear and tear caused by dry running of the water pump, improves the reliability of heater operation, and meets the user's heating needs.

[0061] Specifically, the acquisition module 100 acquires the increase in saturation temperature of the cold medium passing through the first heat exchanger in the heating system during the first preset time period, under the exhaust pressure detected within the first preset time period, as well as the water temperature difference between the inlet and outlet of the first heat exchanger during the first preset time period. Since the pressure values ​​corresponding to the start and end times of the first preset time period are different, the corresponding saturation temperature of the cold medium is also different. Therefore, the saturation temperature of the cold medium will have a certain increase during the first preset time period.

[0062] Specifically, the judgment module 200 determines whether the water system in the heating system is in a state of no water circulation or water circulation by judging whether the state of the first water system satisfies the condition that the saturation temperature rise of the cold medium passing through the first heat exchanger under the exhaust pressure detected within the first preset time period is greater than or equal to the preset rise, the water temperature difference is less than or equal to the first preset water temperature difference, or the water temperature difference is greater than or equal to the second preset water temperature difference.

[0063] Specifically, when the first water system state meets the first preset condition and / or the second preset condition, the first determining module 300 determines that the water system state of the heating system is a waterless state. At this time, in order to prevent the water pump motor in the heating system from being unable to dissipate heat and from dry running and wearing out in the state of no water circulation, a shutdown signal is output to the heating system to shut down the heating system.

[0064] Specifically, if neither the first preset condition nor the second preset condition is met in the first water system state, the second determining module 400 determines that the water system state of the heating system is a water-containing state. At this time, there is no phenomenon of water pump running dry in the heating system, and the heating system is controlled to continue to operate normally.

[0065] In some optional embodiments, the acquisition module 100 includes: a first acquisition submodule, used to acquire a first pressure of the cold medium, wherein the first pressure is the pressure value of the cold medium detected by a pressure sensor at a first time point, the pressure sensor is connected to the inlet of the first heat exchanger, and the first time point is used as the start time point of a first preset time period; a second acquisition submodule, used to acquire a second pressure of the cold medium, wherein the second pressure is the pressure value of the cold medium detected by the pressure sensor at a second time point, the second time point is after the first time point, and the second preset time point is used as the end time point of the first preset time period; a first determination submodule, used to determine a first high-pressure temperature corresponding to the first pressure and a second high-pressure temperature corresponding to the second pressure according to the first pressure, the second pressure and a preset relationship, wherein the preset relationship is used to characterize the relationship between the pressure value of the cold medium and the saturation temperature of the cold medium; and a first calculation submodule, used to calculate the difference between the first high-pressure temperature and the second high-pressure temperature to obtain the increase in high-pressure temperature.

[0066] In some optional embodiments, the acquisition module 100 further includes: a third acquisition submodule, used to acquire a first water temperature, wherein the first water temperature is the water temperature collected by a first temperature sensor in the heating system at a first preset time point, and the first preset time point is the start time point of a first preset time period; a fourth acquisition submodule, used to acquire a second water temperature, wherein the second water temperature is the water temperature collected by a second temperature sensor in the heating system at a second preset time point, and the second preset time point is used as the end time point of the first preset time period; and a second calculation submodule, used to calculate the difference between the first water temperature and the second water temperature to obtain the water temperature difference.

[0067] In some optional embodiments, the control device in this embodiment of the invention further includes: a second judgment module, used to determine whether a water flow switch in a disconnected state is connected to the outlet of the water pump when the heating system is in the start-up phase and the water pump in the heating system is in a closed state; a first sending module, used to send a first start signal to the compressor in the heating system when the judgment result indicates that a water flow switch in a disconnected state is connected to the outlet of the water pump, so as to start the compressor and obtain the third high-pressure temperature of the first heat exchanger, wherein the third high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at a third pressure that meets the preset pressure range, and the third pressure is the pressure value at a third time point in the start-up phase; a third judgment module, used to determine whether the third high-pressure temperature is greater than or equal to the preset high-pressure temperature; and a second sending module, used to send a second start signal to the water pump when the third high-pressure temperature is determined to be greater than or equal to the preset high-pressure temperature, so as to start the water pump.

[0068] In some optional embodiments, the control device in this embodiment of the invention further includes: a second acquisition module, used to acquire the second water system status of the heating system during the startup phase, the second water system status including: the drop in high-pressure temperature of the first heat exchanger in the heating system within a second preset time period, wherein the pressure values ​​corresponding to the start and end times of the high-pressure temperature are different; and a fourth judgment module, used to determine whether the drop in high-pressure temperature is greater than or equal to a preset drop, wherein if the drop in high-pressure temperature is greater than or equal to the preset drop, it is determined that the heating system has water circulation.

[0069] In some optional embodiments, the control device in this invention further includes: a third determining module, used to determine that the heating system is in a state of no water circulation when the drop in high pressure temperature is less than a preset drop, and to send a shutdown signal to the water pump to shut down the water pump.

[0070] In some optional embodiments, the second acquisition module includes: a fifth acquisition submodule, used to acquire the fourth high-pressure temperature of the first heat exchanger, wherein the fourth high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger under the fourth pressure, and the fourth pressure is the pressure value of the exhaust pressure of the cold medium passing through the first heat exchanger at the start of the water pump; a sixth acquisition submodule, used to acquire the fifth high-pressure temperature of the first heat exchanger, wherein the fifth high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger under the fifth pressure, and the fifth pressure is the pressure value of the exhaust pressure of the cold medium passing through the first heat exchanger after a preset time since the start of the water pump; and a third calculation submodule, used to calculate the difference between the fourth high-pressure temperature and the fifth high-pressure temperature to obtain the decrease in high-pressure temperature.

[0071] The control device for the aforementioned heating system may include a processor and a memory. The acquisition module, judgment module, first determination module, and second determination module are all stored as program units in the memory, and the processor executes these program units to achieve the corresponding functions. All of the above modules reside in the same processor; alternatively, the modules may be located in different processors in any combination.

[0072] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and by adjusting kernel parameters, it can promptly identify whether the water pumps in the water system are running dry. This not only prevents the water pump motor from failing to dissipate heat when there is no water circulation, but also reduces the risk of heater malfunctions due to wear and tear caused by dry running of the water pump, improving the reliability of the heater and meeting users' heating needs.

[0073] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0074] This invention provides a computer-readable storage medium that includes a stored program, wherein, when the program is running, it controls the device containing the computer-readable storage medium to execute a control method for a heating system.

[0075] Specifically, the control methods for heating systems include: Step S11: Obtain the first water system status of the heating system during the operation phase. The first water system status includes: the rise in the high pressure temperature of the first heat exchanger in the heating system during the first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger during the first preset time period. The high pressure temperature is the saturation temperature corresponding to the exhaust pressure of the cold medium passing through the first heat exchanger during the first preset time period. Specifically, by setting the aforementioned preset pressure range, the saturation temperature at pressures meeting the preset pressure range can be defined as the high-pressure temperature. During the operation of the heating system, the increase in the saturation temperature of the cold medium passing through the first heat exchanger within the first preset time period at pressures meeting the preset pressure range, as well as the water temperature difference between the inlet and outlet of the first heat exchanger within the first preset time period, are obtained. Since the pressure values ​​corresponding to the start and end times of the first preset time period are different, the corresponding saturation temperatures of the cold medium are also different. Therefore, the saturation temperature of the cold medium will have a certain increase within the first preset time period.

[0076] Specifically, the aforementioned refrigerant can be R410A refrigerant, wherein R410A refrigerant is a mixed refrigerant comprising a mixture of dichloromethane and pentafluoroethane. However, it should be noted that the refrigerant in this invention is not limited to the above-mentioned types, and those skilled in the art do not make specific limitations.

[0077] Step S12: Determine whether the state of the first water system meets the first preset condition or the second preset condition. The first preset condition includes: the increase in high pressure temperature is greater than or equal to the preset increase, and the water temperature difference is less than or equal to the first preset water temperature difference. The second preset condition includes: the water temperature difference is greater than or equal to the second preset water temperature difference. Specifically, by determining whether the state of the first water system satisfies the condition that the saturation temperature rise of the cold medium passing through the first heat exchanger is greater than or equal to the preset rise under a pressure within a preset pressure range, and the water temperature difference is less than or equal to the first preset water temperature difference, or the water temperature difference is greater than or equal to the second preset water temperature difference, it can be determined whether the water system state in the heating system is without water circulation or with water circulation.

[0078] Specifically, the first heat exchanger mentioned above can be any one of a shell-and-tube heat exchanger, a plate heat exchanger, a shell-and-tube heat exchanger, and a high-efficiency tank. This invention does not make any specific limitation, but the type of heat exchanger mentioned above should be a water-fluoride heat exchanger.

[0079] Step S13: If the judgment result indicates that the first water system state meets the first preset condition and / or the second preset condition, determine that the heating system is in a state of no water circulation and output a shutdown signal. The shutdown signal is used to shut down the heating system. Here, no water circulation means that the water system state of the heating system is in a state of no water. The water system state includes: the first water system state and the second water system state. Specifically, if the judgment result in step S12 indicates that the first water system state meets the first preset condition and / or the second preset condition, it can be determined that the water system state of the heating system is a waterless state. At this time, in order to prevent the water pump motor in the heating system from being unable to dissipate heat and from dry running and wearing out in the state of no water circulation, a shutdown signal is output to the heating system to shut down the heating system.

[0080] Step S14: If the judgment result indicates that the first water system state does not meet the first preset condition and the second preset condition, the heating system is determined to be in a water circulation state. Water circulation means that the water system state of the heating system is in a water state.

[0081] Specifically, if the judgment result in step S12 indicates that the first water system status does not meet the first preset condition and the second preset condition, it can be determined that the water system status of the heating system is a water-containing state. At this time, there is no phenomenon of water pump running dry in the heating system, and the heating system can continue to operate normally.

[0082] This invention provides an electronic device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps: acquiring a first water system state of a heating system during its operation phase. The first water system state includes: the increase in high-pressure temperature of a first heat exchanger in the heating system within a first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger within the first preset time period, wherein the high-pressure temperature is the saturation temperature corresponding to the exhaust pressure of the cold medium passing through the first heat exchanger detected within the first preset time period; and determining whether the first water system state meets a first preset condition or a second preset condition, wherein the first preset condition includes: high-pressure temperature... The temperature rise is greater than or equal to a preset rise, and the water temperature difference is less than or equal to a first preset water temperature difference. The second preset condition includes: the temperature rise is greater than or equal to a second preset water temperature difference. If the judgment result indicates that the first water system state meets the first preset condition and / or the second preset condition, the heating system is determined to be in a state of no water circulation, and a shutdown signal is output. The shutdown signal is used to shut down the heating system. Here, no water circulation means that the water system state of the heating system is in a state of no water. The water system state includes: the first water system state and the second water system state. If the judgment result indicates that the first water system state does not meet either the first or second preset condition, the heating system is determined to be in a state of water circulation. Water circulation means that the water system state of the heating system is in a state of water. Electronic devices in this document can be servers, PCs, PADs, mobile phones, etc.

[0083] This invention also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps: obtaining a first water system state of a heating system during its operation phase, the first water system state including: the increase in high-pressure temperature of a first heat exchanger in the heating system within a first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger within the first preset time period, wherein the high-pressure temperature is the saturation temperature corresponding to the exhaust pressure of the cold medium passing through the first heat exchanger detected within the first preset time period; determining whether the first water system state meets a first preset condition or a second preset condition, wherein the first preset condition includes: the increase in high-pressure temperature being greater than or equal to... The water temperature difference is less than or equal to the first preset water temperature difference within a preset increment. The second preset condition includes: the increment of the water temperature difference is greater than or equal to the second preset water temperature difference. If the judgment result indicates that the first water system state meets the first preset condition and / or the second preset condition, the heating system is determined to be in a state of no water circulation, and a shutdown signal is output. The shutdown signal is used to shut down the heating system. Here, no water circulation means that the water system state of the heating system is in a state of no water. The water system state includes: the first water system state and the second water system state. If the judgment result indicates that the first water system state does not meet either the first preset condition or the second preset condition, the heating system is determined to be in a state of water circulation. Water circulation means that the water system state of the heating system is in a state of water circulation.

[0084] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0085] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0086] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0087] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0088] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0089] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0090] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0091] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0092] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0093] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: The control method of the heating system of the present invention can promptly identify whether the water pump in the water system is running dry. This not only avoids the situation where the water pump motor cannot dissipate heat when there is no water circulation, but also reduces the risk of heater malfunction due to wear caused by dry running of the water pump, improves the reliability of heater operation, and meets the heating needs of users.

[0094] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A control method for a heating system, characterized in that, include: The first water system status of the heating system during the operation phase is obtained. The first water system status includes: the rise in the high pressure temperature of the first heat exchanger in the heating system during a first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger during the first preset time period. The high pressure temperature is the saturation temperature corresponding to the exhaust pressure of the cold medium passing through the first heat exchanger during the first preset time period. Determine whether the state of the first water system meets a first preset condition or a second preset condition, wherein the first preset condition includes: the increase in the high-pressure temperature is greater than or equal to a preset increase, and the water temperature difference is less than or equal to a first preset water temperature difference; the second preset condition includes: the water temperature difference is greater than or equal to a second preset water temperature difference. If the judgment result indicates that the state of the first water system meets the first preset condition and / or the second preset condition, the heating system is determined to be in a state of no water circulation, and a shutdown signal is output. The shutdown signal is used to shut down the heating system. The state of no water circulation means that the water system state of the heating system is a state of no water, and the water system state includes at least the state of the first water system. If the judgment result indicates that the state of the first water system does not meet the first preset condition and the second preset condition, the heating system is determined to be in a state of water circulation. The state of water circulation means that the water system state of the heating system is in a state of water. Before obtaining the first water system state of the heating system during its operation phase, the control method further includes: during the startup phase of the heating system and when the water pump in the heating system is in a closed state, determining whether a flow switch is set in the second water system state of the startup phase. The water system state also includes the second water system state, which includes: the drop in high-pressure temperature of the first heat exchanger in the heating system during a second preset time period, wherein the pressure values ​​corresponding to the start and end times of the second preset time period are different; if the determination result indicates that the flow switch is not set in the second water system state, then... The compressor in the system sends a first start signal to start the compressor and obtains the third high-pressure temperature of the first heat exchanger. The third high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at a third pressure that meets the discharge pressure. The third pressure is the pressure value at a third time point during the start-up phase. If the judgment result indicates that the flow switch is present in the second water system state, the compressor and the water pump are controlled to start. It is determined whether the third high-pressure temperature is greater than or equal to a preset high-pressure temperature. If the third high-pressure temperature is greater than or equal to the preset high-pressure temperature, a second start signal is sent to the water pump to start the water pump.

2. The control method according to claim 1, characterized in that, Obtaining the increase in the high-pressure temperature includes: The first pressure of the cold medium is obtained, wherein the first pressure is the pressure value of the cold medium detected by the pressure sensor at a first time point, the pressure sensor is connected to the inlet of the first heat exchanger, and the first time point is taken as the start time point of the first preset time period. The second pressure of the cold medium is obtained, wherein the second pressure is the pressure value of the cold medium detected by the pressure sensor at a second time point, and the second time point is after the first time point, and the second time point is taken as the end time point of the first preset time period. Based on the first pressure, the second pressure, and a preset relationship, a first high-pressure temperature corresponding to the first pressure and a second high-pressure temperature corresponding to the second pressure are determined, wherein the preset relationship is used to characterize the relationship between the pressure value of the cold medium and the saturation temperature of the cold medium. The difference between the first high-pressure temperature and the second high-pressure temperature is calculated to obtain the increase in the high-pressure temperature.

3. The control method according to claim 1, characterized in that, Obtaining the water temperature difference includes: The first water temperature is obtained, wherein the first water temperature is the water temperature collected by the first temperature sensor in the heating system at a first time point, the first time point is the start time point of the first preset time period, and the first temperature sensor is set at the water inlet of the first heat exchanger. The second water temperature is obtained, wherein the second water temperature is the water temperature collected by the second temperature sensor in the heating system at a second time point, and the second time point is taken as the end time point of the first preset time period. The second temperature sensor is set at the outlet of the first heat exchanger. The difference between the first water temperature and the second water temperature is calculated to obtain the water temperature difference.

4. The control method according to claim 1, characterized in that, Also includes: Obtain the status of the second water system of the heating system during the startup phase; Determine whether the drop in high-pressure temperature is greater than or equal to a preset drop, wherein if the drop in high-pressure temperature is greater than or equal to the preset drop, determine that the heating system has water circulation.

5. The control method according to claim 4, characterized in that, Also includes; If the drop in high-pressure temperature is less than the preset drop, the heating system is determined to be in a state of no water circulation, and a shutdown signal is sent to the water pump to shut it down.

6. The control method according to claim 4, characterized in that, The step of obtaining the status of the second water system during the startup phase of the heating system includes: Obtain the fourth high-pressure temperature of the first heat exchanger, wherein the fourth high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger under the fourth pressure, and the fourth pressure is the pressure value of the exhaust pressure of the cold medium passing through the first heat exchanger at the start time of the water pump. The fifth high-pressure temperature of the first heat exchanger is obtained. The fifth high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger under the fifth pressure. The fifth pressure is the pressure value of the exhaust pressure of the cold medium passing through the first heat exchanger after the water pump has been started for a preset time. The difference between the fourth high-pressure temperature and the fifth high-pressure temperature is calculated to obtain the decrease in the high-pressure temperature.

7. A control device for a heating system, characterized in that, include: The first acquisition module is used to acquire the first water system status of the heating system during the operation phase. The first water system status includes: the increase in the high pressure temperature of the first heat exchanger in the heating system during a first preset time period, and the water temperature difference between the inlet and outlet of the first heat exchanger during the first preset time period. The high pressure temperature is the saturation temperature corresponding to the exhaust pressure of the cold medium passing through the first heat exchanger during the first preset time period. The first judgment module is used to determine whether the state of the first water system meets the first preset condition or the second preset condition. The first preset condition includes: the increase in the high pressure temperature is greater than or equal to the preset increase, and the water temperature difference is less than or equal to the first preset water temperature difference. The second preset condition includes: the increase in the water temperature difference is greater than or equal to the second preset water temperature difference. The first determining module is used to determine that the heating system is in a state of no water circulation when the determination result indicates that the state of the first water system meets the first preset condition and / or the second preset condition, and outputs a shutdown signal. The shutdown signal is used to shut down the heating system. The state of no water circulation means that the water system state of the heating system is in a state of no water, and the water system state includes at least the state of the first water system. The second determining module is used to determine that the heating system is in a water circulation state when the judgment result indicates that the first water system state does not meet the first preset condition and the second preset condition. The water circulation state indicates that the water system state of the heating system is in a water state. The control device further includes: a second judgment module, used to determine whether a flow switch is set in the second water system state during the start-up phase of the heating system when the water pump in the heating system is in a closed state. The water system state also includes a second water system state, which includes: a first sending module, used to determine the drop in high-pressure temperature of the first heat exchanger in the heating system within a second preset time period, wherein the pressure values ​​corresponding to the start and end times of the second preset time period are different; the first sending module is used to send a first... when the judgment result indicates that the flow switch is not in the second water system state, to the compressor in the heating system. A start signal is provided to start the compressor and obtain the third high-pressure temperature of the first heat exchanger, wherein the third high-pressure temperature is the saturation temperature of the cold medium passing through the first heat exchanger at a third pressure that meets the discharge pressure, and the third pressure is the pressure value at a third time point during the start-up phase; a third judgment module is used to control the compressor and the water pump to start when the judgment result indicates that the water flow switch is present in the second water system state; a third judgment module is used to determine whether the third high-pressure temperature is greater than or equal to a preset high-pressure temperature; a second sending module is used to send a second start signal to the water pump to start the water pump when the third high-pressure temperature is determined to be greater than or equal to the preset high-pressure temperature.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method of the heating system according to any one of claims 1 to 6.

9. An electronic device, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a control method for performing a heating system according to any one of claims 1 to 6.

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