Control method of heat pump system and related device thereof

Abstract

The invention relates to a control method of a heat pump system and a related device thereof.The control method comprises the steps that R290 refrigerant concentrations collected by at least two R290 concentration sensors are obtained, and the R290 concentration sensors at least comprise a first concentration sensor and a second concentration sensor; the R290 refrigerant concentration comprises a first refrigerant concentration collected by a first concentration sensor and a second refrigerant concentration collected by a second concentration sensor, and the R290 concentration sensor is arranged in a cavity of a compressor of the heat pump system; according to the first refrigerant concentration, the working state of a first relay is determined, and according to the second refrigerant concentration, the working state of a second relay is determined; and when the working states of the first relay and the second relay are both closed states, the heat pump system is controlled to work. According to the scheme, the R290 refrigerant concentration can be detected at the same time through the multiple sensors, the detection accuracy is improved, and the safety and stability of the heat pump system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pump systems, in particular to a control method of a heat pump system and a related device thereof. BACKGROUND

[0002] With the improvement of environmental protection requirements, R290 refrigerant is widely used in heat pump systems due to its environmental protection characteristics. However, as a flammable refrigerant, too much leakage of R290 will cause safety hazards in the heat pump system.

[0003] In related technologies, a single sensor is usually used to detect the refrigerant concentration. However, when the sensor fails, the heat pump system cannot accurately determine the refrigerant leakage condition, which may cause the compressor to continue working when there is too much refrigerant leakage, resulting in damage to the heat pump system. SUMMARY

[0004] To solve or partially solve the problems in related technologies, the present application provides a control method of a heat pump system and a related device thereof, which can detect the R290 refrigerant concentration through multiple sensors simultaneously, improve the accuracy of detection, and improve the safety and stability of the heat pump system.

[0005] The first aspect of the present application provides a control method of a heat pump system, applied to the heat pump system, comprising: acquiring R290 refrigerant concentrations collected by at least two R290 concentration sensors, the R290 concentration sensors at least including a first concentration sensor and a second concentration sensor, the R290 refrigerant concentrations including a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, the R290 concentration sensors being arranged in a cavity of a compressor of the heat pump system; determining a working state of a first relay according to the first refrigerant concentration, and determining a working state of a second relay according to the second refrigerant concentration; when the working states of the first relay and the second relay are both in a closed state, controlling the heat pump system to work.

[0006] In combination with the first aspect, in a possible implementation manner of the first aspect, the acquiring of the R290 refrigerant concentrations collected by the at least two R290 concentration sensors comprises: acquiring the first refrigerant concentration of the first concentration sensor, and if the first refrigerant concentration is greater than a first preset threshold, determining that the first concentration sensor is abnormal; and / or, acquiring the second refrigerant concentration of the second concentration sensor, and if the second refrigerant concentration is greater than a second preset threshold, determining that the second concentration sensor is abnormal.

[0007] With reference to the first aspect, in a possible implementation manner of the first aspect, the obtaining the R290 refrigerant concentration collected by the at least two R290 concentration sensors comprises: obtaining a first concentration difference according to a difference between the first refrigerant concentration and the second refrigerant concentration; and if the first concentration difference is greater than a third preset threshold, determining, according to the first refrigerant concentration and the second refrigerant concentration, whether the first concentration sensor or the second concentration sensor is abnormal.

[0008] With reference to the first aspect, in a possible implementation manner of the first aspect, the determining the working state of the first relay according to the first refrigerant concentration and the determining the working state of the second relay according to the second refrigerant concentration comprise: if the first refrigerant concentration is less than a fourth preset threshold, determining that the working state of the first relay is a closed state; and / or, if the second refrigerant concentration is less than a fifth preset threshold, determining that the working state of the second relay is a closed state.

[0009] With reference to the first aspect, in a possible implementation manner of the first aspect, the method further comprises: if the first concentration sensor is abnormal, determining that the working state of the first relay is an open state; and / or, if the second concentration sensor is abnormal, determining that the working state of the second relay is an open state.

[0010] With reference to the first aspect, in a possible implementation manner of the first aspect, the method further comprises: if the first sensor or the second sensor is abnormal, generating warning information by the heat pump system.

[0011] With reference to the first aspect, in a possible implementation manner of the first aspect, before the obtaining the R290 refrigerant concentration collected by the at least two R290 concentration sensors, the method further comprises: performing feasibility verification on the first concentration sensor and the second concentration sensor before power-on to obtain a verification result; if the verification result is verification success, starting the first concentration sensor and the second concentration sensor; and if the verification result is verification failure, generating maintenance information.

[0012] The second aspect of the application provides a control device of a heat pump system, comprising an acquisition module configured to acquire R290 refrigerant concentrations collected by at least two R290 concentration sensors, wherein the at least two R290 concentration sensors comprise at least a first concentration sensor and a second concentration sensor, the R290 refrigerant concentrations comprise a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, and the R290 concentration sensors are arranged in cavities of a compressor of the heat pump system; a determination module configured to determine a working state of a first relay according to the first refrigerant concentration, and determine a working state of a second relay according to the second refrigerant concentration; and a control module configured to control the heat pump system to work when the working states of the first relay and the second relay are both closed states.

[0013] With reference to the second aspect, in a possible implementation manner of the second aspect, the acquisition module is further configured to acquire the first refrigerant concentration of the first concentration sensor, and if the first refrigerant concentration is greater than a first preset threshold, it is determined that the first concentration sensor is abnormal; and / or, acquire the second refrigerant concentration of the second concentration sensor, and if the second refrigerant concentration is greater than a second preset threshold, it is determined that the second concentration sensor is abnormal.

[0014] With reference to the second aspect, in a possible implementation manner of the second aspect, the acquisition module is further configured to obtain a first concentration difference according to a difference between the first refrigerant concentration and the second refrigerant concentration; and if the first concentration difference is greater than a third preset threshold, it is determined that the first concentration sensor or the second concentration sensor is abnormal according to the first refrigerant concentration and the second refrigerant concentration.

[0015] With reference to the second aspect, in a possible implementation manner of the second aspect, the determination module is further configured to determine that the working state of the first relay is a closed state if the first refrigerant concentration is less than a fourth preset threshold; and / or, determine that the working state of the second relay is a closed state if the second refrigerant concentration is less than a fifth preset threshold.

[0016] With reference to the second aspect, in a possible implementation manner of the second aspect, the determination module is further configured to determine that the working state of the first relay is an open state if the first concentration sensor is abnormal; and / or, determine that the working state of the second relay is an open state if the second concentration sensor is abnormal.

[0017] With reference to the second aspect, in a possible implementation manner of the second aspect, the control module is further configured to cause the heat pump system to generate warning information if the first sensor or the second sensor is abnormal.

[0018] With reference to the second aspect, in a possible implementation manner of the second aspect, the control module is further configured to perform feasibility verification on the first concentration sensor and the second concentration sensor before power-on, to obtain a verification result; if the verification result is verification success, the first concentration sensor and the second concentration sensor are started; and if the verification result is verification failure, maintenance information is generated.

[0019] The third aspect of the present application provides an electronic device, comprising:

[0020] a processor; and

[0021] a memory having stored thereon executable code that, when executed by the processor, causes the processor to perform the method described above.

[0022] The fourth aspect of the present application provides a computer-readable storage medium having stored thereon executable code that, when executed by a processor of an electronic device, causes the processor to perform the method described above.

[0023] The fifth aspect of the present application provides a computer program product comprising computer programs / instructions that, when executed by a processor, implement the method described above.

[0024] The technical solutions provided by the present application can include the following beneficial effects:

[0025] The control method of the heat pump system and the related device of the present application are applied to the heat pump system, and include: acquiring R290 refrigerant concentrations collected by at least two R290 concentration sensors, the R290 concentration sensors at least including a first concentration sensor and a second concentration sensor, the R290 refrigerant concentrations including a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, and the R290 concentration sensors being arranged in cavities of compressors of the heat pump system; determining a working state of a first relay according to the first refrigerant concentration, and determining a working state of a second relay according to the second refrigerant concentration; when the working states of the first relay and the second relay are both closed states, controlling the heat pump system to work, which can detect the R290 refrigerant concentrations by multiple sensors at the same time, improve the accuracy of detection, and improve the safety and stability of the heat pump system.

[0026] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description thereof taken in conjunction with the accompanying drawings, in which like reference characters designate like elements throughout the several views.

[0028] Figure 1 is a flowchart of a control method of a heat pump system according to an embodiment of the present application;

[0029] Figure 2 is another flowchart of a control method of a heat pump system according to an embodiment of the present application;

[0030] Figure 3 is a structural diagram of a control device of a heat pump system according to an embodiment of the present application;

[0031] Figure 4 is a structural diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] Embodiments of the present application will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the application are shown. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0033] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0034] It is to be understood that the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It is to be further understood that the terms "comprise", "comprising", "comprises", "including", "includes" or "contain" or "containing" when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

[0035] In the related art, with the improvement of environmental protection requirements, R290 refrigerant is widely used in heat pump systems due to its environmental protection characteristics. However, as a flammable refrigerant, too much leakage of R290 will cause safety hazards in the heat pump system.

[0036] In the related art, a single sensor is usually used to detect the refrigerant concentration. However, when the sensor fails, the heat pump system cannot accurately determine the refrigerant leakage condition, which may cause the compressor to continue working when the refrigerant leaks too much, resulting in damage to the heat pump system.

[0037] To solve the above problems, the embodiments of the present application provide a control method of a heat pump system and related devices, which can detect the R290 refrigerant concentration through multiple sensors simultaneously, improve the detection accuracy, and improve the safety and stability of the heat pump system.

[0038] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] Figure 1 is a flowchart of the control method of the heat pump system according to the embodiments of the present application.

[0040] Referring to Figure 1 , a control method of a heat pump system includes:

[0041] S110: Obtain the R290 refrigerant concentration collected by at least two R290 concentration sensors, the R290 concentration sensors including at least a first concentration sensor and a second concentration sensor, the R290 refrigerant concentration including a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, and the R290 concentration sensors being arranged in the cavity of the compressor of the heat pump system.

[0042] Specifically, the R290 concentration sensor can be used to detect the content of R290 refrigerant in the environment, for example, it can be an infrared sensor, and the output signal thereof is in proportional relationship with the refrigerant concentration. The heat pump system can continuously and real-timely collect the R290 concentration in the heat pump system through the first concentration sensor and the second concentration sensor, so as to determine the leakage condition of the R290 refrigerant subsequently. Compared with using a single sensor to monitor the R290 concentration, using two sensors to monitor the R290 concentration can improve the safety and reliability.

[0043] S120: Determine the working state of the first relay according to the first refrigerant concentration, and determine the working state of the second relay according to the second refrigerant concentration.

[0044] Specifically, the first relay and the second relay are switching elements controlled by two sensor data, such as electromagnetic relays or solid-state relays, and the relays can be used to control the compressor power supply circuit. The heat pump system controls the working state of the first relay and the second relay through the first refrigerant concentration and the second refrigerant concentration, for example, when the first refrigerant concentration is lower than a threshold value, the first relay can be controlled to be in a closed state.

[0045] S130: When the working state of the first relay and the second relay is in a closed state, the heat pump system is controlled to work.

[0046] Specifically, the heat pump system continuously collects R290 refrigerant concentrations through the first concentration sensor and the second concentration sensor. When the first refrigerant concentration collected by the first sensor is less than a preset threshold value, the working state of the first relay is controlled to be in a closed state. When the second refrigerant concentration collected by the second sensor is less than a preset threshold value, the working state of the second relay is controlled to be in a closed state. When both relays are closed, the circuit between the compressor and the system power supply is conducted, and the compressor can start working. The heat pump system can continuously exchange heat with the surrounding environment. Through double-sensor cross verification, when the data monitored by both sensors are normal, the compressor is started to work, which can improve the safety of the heat pump system during operation.

[0047] The control method of the heat pump system provided by the application is applied to a heat pump system and includes the following steps: collecting R290 refrigerant concentrations collected by at least two R290 concentration sensors, the R290 concentration sensors including at least a first concentration sensor and a second concentration sensor, the R290 refrigerant concentrations including a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, and the R290 concentration sensors being arranged in a cavity of a compressor of the heat pump system; determining a working state of a first relay according to the first refrigerant concentration and determining a working state of a second relay according to the second refrigerant concentration; and controlling the heat pump system to work when the working states of the first relay and the second relay are both in a closed state. The R290 refrigerant concentrations can be detected by multiple sensors at the same time, the detection accuracy is improved, and the safety and stability of the heat pump system are improved.

[0048] Figure 2 Another flowchart of the control method of the heat pump system is shown in the embodiment of the application.

[0049] Referring to Figure 2 A control method of a heat pump system is applied to a heat pump system and includes the following steps:

[0050] S210: Obtain the R290 refrigerant concentration collected by at least two R290 concentration sensors, the R290 concentration sensors at least including a first concentration sensor and a second concentration sensor, the R290 refrigerant concentration including a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, and the R290 concentration sensors being arranged in the cavity of the compressor of the heat pump system.

[0051] Specifically, the first concentration sensor and the second concentration sensor can be connected to different data transmission channels of the controller, so as to avoid errors in the data collected by the two sensors. The controller can obtain the R290 concentration collected by the R290 concentration sensors. When the heat pump system is powered on, the R290 concentration sensors can start working and collect the R290 refrigerant concentration in the compressor in real time.

[0052] In a possible implementation, the first refrigerant concentration of the first concentration sensor is obtained. If the first refrigerant concentration is greater than a first preset threshold, it is determined that the first concentration sensor is abnormal. The second refrigerant concentration of the second concentration sensor is obtained. If the second refrigerant concentration is greater than a second preset threshold, it is determined that the second concentration sensor is abnormal.

[0053] Specifically, the first concentration sensor and the second concentration sensor can be installed in the compressor cavity of the heat pump system or the key nodes of the refrigerant circulation pipeline. The first preset threshold and the second preset threshold can be preset. The first preset threshold and the second preset threshold can be equal, for example, set to 2000 ppm. When the first refrigerant concentration or the second refrigerant concentration exceeds the value, the refrigerant concentration in the compressor generally will not exceed the first preset threshold or the second preset threshold. At this time, it can be considered that the concentration sensor is abnormal.

[0054] In a possible implementation, a first concentration difference is obtained according to the difference between the first refrigerant concentration and the second refrigerant concentration. If the first concentration difference is greater than a third preset threshold, it is determined that the first concentration sensor or the second concentration sensor is abnormal according to the first refrigerant concentration and the second refrigerant concentration.

[0055] Specifically, the first concentration difference refers to the difference value of the refrigerant concentration data collected by the two concentration sensors at the same time point, and the third preset threshold can be preset as 20% relative deviation or 500 ppm absolute difference. During the operation of the heat pump system, the controller reads the real-time concentration data of the two concentration sensors through independent acquisition channels, and cross- verifies the instantaneous concentration difference of the two concentration sensors. When it is detected that the first concentration difference continuously exceeds the third preset threshold, it is possible that one of the concentration sensors is faulty. For example, when the first sensor detects 800 ppm and the second sensor detects 50 ppm, the first concentration difference is greater than the third preset threshold, indicating that the first concentration sensor or the second concentration sensor is abnormal. The data of the two concentration sensors can be dynamically compared to determine whether the concentration sensor is abnormal. Further, the historical fluctuation trend of the data of the two concentration sensors can be obtained for comprehensive judgment to confirm that one of the concentration sensors has a drift, failure, or signal distortion problem. At this time, the corresponding relay associated with the concentration sensor can be turned off.

[0056] S220: determining the working state of the first relay according to the first refrigerant concentration and determining the working state of the second relay according to the second refrigerant concentration.

[0057] Specifically, the controller can determine the working state of the first relay and the second relay according to the first refrigerant concentration and the second refrigerant concentration. If any concentration sensor detects that the refrigerant concentration exceeds the standard, the controller can control the corresponding relay to be immediately disconnected to avoid damaging the heat pump system.

[0058] In one possible implementation, if the first refrigerant concentration is less than a fourth preset threshold, the working state of the first relay is determined to be a closed state; and / or, if the second refrigerant concentration is less than a fifth preset threshold, the working state of the second relay is determined to be a closed state.

[0059] Specifically, the fourth preset threshold and the fifth preset threshold can be preset. The fourth preset threshold is a critical value of the refrigerant concentration allowed to be closed by the first relay, and the fifth preset threshold is a critical value of the refrigerant concentration allowed to be closed by the second relay. The fourth preset threshold and the fifth preset threshold can be equal, for example, the fourth preset threshold can be 500 ppm, which is not limited here.

[0060] Specifically, during the operation of the heat pump system, the compressor continuously operates, and the first and second concentration sensors continuously collect the refrigerant concentration data in the compressor cavity. When the first refrigerant concentration is less than the fourth preset threshold, the controller can control the first relay to be in a closed state. When the second refrigerant concentration is less than the fifth preset threshold, the controller can control the second relay to be in a closed state. The first and second relays are located on the communication path between the compressor and the power supply. When both relays are in the closed state, the loop between the compressor and the power supply forms a complete path, and the compressor can start working. The heat pump system enters a normal operation stage. If any refrigerant concentration value exceeds the corresponding threshold, the controller will immediately cut off the power supply of the corresponding relay, forcibly interrupting the operation of the compressor, and better protecting the heat pump system.

[0061] In a possible implementation, if the first concentration sensor is abnormal, it is determined that the working state of the first relay is an open state; and / or, if the second concentration sensor is abnormal, it is determined that the working state of the second relay is an open state.

[0062] Specifically, when the first concentration sensor outputs abnormal data due to hardware damage or signal interference, the controller determines that the concentration sensor is in an abnormal state according to a preset logic, and immediately sends a disconnection instruction to the first relay to forcibly cut off the power supply circuit controlled by the first relay. If the second concentration sensor is abnormal, the second relay synchronously performs a disconnection action. The two relays can be connected in series. The disconnection of any relay will completely cut off the loop between the compressor and the power supply, thereby preventing the heat pump system from continuing to operate in the case of sensor failure. For example, when the first sensor continuously outputs a false concentration value higher than 500 ppm due to circuit aging, the system determines that it is abnormal and immediately disconnects the first relay. At this time, even if the second sensor shows a normal concentration, the compressor cannot start, which can ensure that the path between the compressor and the power supply is immediately cut off when any concentration sensor fails, thereby avoiding the risk of excessive leakage of R290 refrigerant caused by false positives or false negatives of the concentration sensor.

[0063] S230: When the working states of the first and second relays are both closed, the heat pump system is controlled to work.

[0064] Specifically, the first and second relays are connected in series to control the power supply. When the first and second relays are both closed, the compressor is powered on and starts working, and the heat pump system starts operating.

[0065] S240: If the first sensor or the second sensor is abnormal, the heat pump system generates a warning message.

[0066] Specifically, when the first sensor or the second sensor is abnormal, an alarm information can be generated, and the alarm information can be transmitted to the user through a sound and light alarm device or a remote communication module, such as a buzzer, a display screen text prompt, or a mobile terminal application push notification, to timely prompt the maintenance requirement and avoid potential risks caused by the failure of the concentration sensor.

[0067] Specifically, when the first sensor or the second sensor is abnormal, the controller can first confirm the abnormal type through data comparison or signal verification process, for example, the concentration value of the first sensor is continuously higher than the safety threshold, but the second sensor is in the normal range, or the sensor signal line is disconnected, causing the data to be unable to be read. After confirming the abnormality, the controller starts the preset warning mechanism, for example, triggers the buzzer to emit continuous buzzing sound, and displays the prompt information “sensor failure, please contact maintenance” on the control panel. Further, the controller can record the fault code and the occurrence time to the non-volatile memory, and upload the alarm state to the remote monitoring platform, so that the user can timely find it.

[0068] In a possible implementation, the first concentration sensor and the second concentration sensor are subjected to safety verification, and a verification result is obtained; if the verification result is verification success, the first concentration sensor and the second concentration sensor are started; and if the verification result is verification failure, maintenance information is generated.

[0069] Specifically, when the power is started, the first concentration sensor and the second concentration sensor are powered on and run, and the controller can perform a feasibility certification on the first concentration sensor and the second concentration sensor, which can be used to detect the hardware state of the sensor and the integrity of the signal transmission channel, for example, by using concentration sensor self-checking instruction interaction, to identify abnormal conditions such as concentration sensor disconnection, short circuit, or signal drift. When the concentration sensor returns a valid response signal within a preset time and the signal amplitude is in a normal range, it can be considered that the concentration sensor verification is successful. If the concentration sensor does not respond to the self-checking instruction or returns abnormal data beyond the allowed range, it can be considered that the concentration sensor is abnormal, and the verification fails. At this time, maintenance information can be generated, for example, a fault code can be generated, so that the maintenance personnel can know that the concentration sensor is abnormal, and the corresponding contactor is prohibited from closing, and the compressor cannot work, which can improve the safety of the heat pump system in operation.

[0070] Specifically, the controller can periodically perform a hardware diagnosis task, for example, a Flash check is performed on the memory to perform self-checking, to ensure the normal operation of the memory, and a watchdog feeding mechanism can be used to self-detect the controller to ensure the normal operation of the controller. If potential program abnormality or abnormal restart is found during the operation of the heat pump system, the controller controls the heat pump system to enter a protection shutdown state.

[0071] The application discloses a control method of a heat pump system, which is applied to the heat pump system and comprises the following steps: acquiring R290 refrigerant concentrations collected by at least two R290 concentration sensors, wherein the R290 concentration sensors at least include a first concentration sensor and a second concentration sensor, the R290 refrigerant concentrations include a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, and the R290 concentration sensors are arranged in cavities of compressors of the heat pump system; determining a working state of a first relay according to the first refrigerant concentration and determining a working state of a second relay according to the second refrigerant concentration; and controlling the heat pump system to work when the working states of the first relay and the second relay are both in a closed state. The heat pump system can simultaneously detect the R290 refrigerant concentrations through multiple sensors, the detection accuracy is improved, and the safety and stability of the heat pump system are improved.

[0072] Corresponding to the foregoing application function implementation method embodiments, the application further provides a control device of a heat pump system, an electronic device and corresponding embodiments.

[0073] Figure 3 FIG. 1 is a structural schematic diagram of a control device of a heat pump system according to an embodiment of the application.

[0074] Referring to Figure 3 A control device 300 of a heat pump system comprises:

[0075] An acquisition module 310 is configured to acquire R290 refrigerant concentrations collected by at least two R290 concentration sensors, wherein the R290 concentration sensors at least include a first concentration sensor and a second concentration sensor, the R290 refrigerant concentrations include a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, and the R290 concentration sensors are arranged in cavities of compressors of the heat pump system.

[0076] A determination module 320 is configured to determine a working state of a first relay according to the first refrigerant concentration and determine a working state of a second relay according to the second refrigerant concentration.

[0077] A control module 330 is configured to control the heat pump system to work when the working states of the first relay and the second relay are both in a closed state.

[0078] In a possible implementation, the acquisition module 310 is further configured to acquire the first refrigerant concentration of the first concentration sensor, and if the first refrigerant concentration is greater than a first preset threshold, it is determined that the first concentration sensor is abnormal; and / or acquire the second refrigerant concentration of the second concentration sensor, and if the second refrigerant concentration is greater than a second preset threshold, it is determined that the second concentration sensor is abnormal.

[0079] In a possible implementation, the acquisition module 310 is further configured to obtain a first concentration difference according to a difference between the first refrigerant concentration and the second refrigerant concentration; and if the first concentration difference is greater than a third preset threshold, determine that the first concentration sensor or the second concentration sensor is abnormal according to the first refrigerant concentration and the second refrigerant concentration.

[0080] In a possible implementation, the determination module 320 is further configured to determine that the working state of the first relay is a closed state if the first refrigerant concentration is less than a fourth preset threshold; and / or, determine that the working state of the second relay is a closed state if the second refrigerant concentration is less than a fifth preset threshold.

[0081] In a possible implementation, the determination module 320 is further configured to determine that the working state of the first relay is an open state if the first concentration sensor is abnormal; and / or, determine that the working state of the second relay is an open state if the second concentration sensor is abnormal.

[0082] In a possible implementation, the control module 330 is further configured to generate a warning information if the first sensor or the second sensor is abnormal.

[0083] In a possible implementation, the control module 330 is further configured to perform a feasibility verification on the first concentration sensor and the second concentration sensor before power-on to obtain a verification result; if the verification result is a verification success, start the first concentration sensor and the second concentration sensor; and if the verification result is a verification failure, generate a maintenance information.

[0084] The control device of the heat pump system provided in the application is applied to the heat pump system, and includes: an acquisition module configured to acquire R290 refrigerant concentrations collected by at least two R290 concentration sensors, the R290 concentration sensors including at least a first concentration sensor and a second concentration sensor, the R290 refrigerant concentrations including a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, and the R290 concentration sensors being arranged in a cavity of a compressor of the heat pump system; a determination module configured to determine a working state of a first relay according to the first refrigerant concentration, and determine a working state of a second relay according to the second refrigerant concentration; and a control module configured to control the heat pump system to work when the working states of the first relay and the second relay are both closed states. The heat pump system can detect the R290 refrigerant concentrations through multiple sensors at the same time, improve the accuracy of detection, and improve the safety and stability of the heat pump system.

[0085] As to the apparatus in the above-mentioned embodiments, the specific manners in which various modules perform operations have been described in details in the embodiments about the method, and will not be described in details here.

[0086] The application further provides an electronic device.Figure 4 Fig. 1 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application. The electronic device includes a memory 410 and at least one processor 420. The memory 410 is electrically connected to the at least one processor 420. The memory 410 stores instructions. The at least one processor 420 invokes the instructions in the memory 410, so that the electronic device performs the control method of the heat pump system according to any one of the preceding embodiments of the present application.

[0087] Specifically, the processor 420 can include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or can be configured as one or more integrated circuits that implement embodiments of the present application.

[0088] The memory 410 can include a mass storage for data or instructions. By way of example and not limitation, the memory 410 can include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory 410 can include removable or non-removable (or fixed) media. Where appropriate, the memory 410 can be internal or external to the integrated gateway disaster recovery device. In certain embodiments, the memory 410 is non-volatile solid-state memory. In certain embodiments, the memory 410 includes read-only memory (ROM). Where appropriate, this ROM can be mask-programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), electrically alterable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0089] In one example, the control device can further include a communication interface 430 and a bus 440. The processor 420, the memory 410, and the communication interface 430 are connected through the bus 440 and complete communication with each other.

[0090] The communication interface 430 is mainly used to realize the communication between the modules, devices, units, and / or equipment in the embodiments of the present application.

[0091] Bus 440 includes hardware, software, or both, to couple components of the online data traffic metering device to each other and to couple components to other parallel components for communication and transferring of data. While bus 440 is shown for the sake of clarity as a single bus, it can include one or more buses operating together. Bus 440 can be implemented using any suitable type of bus structure including, for example, a system bus, a memory bus, a peripheral bus, a local bus, a point-to-point bus, a serial bus, or a combination thereof. Although this application describes and illustrates a particular bus, this application contemplates any suitable bus or interconnect.

[0092] In addition, in combination with the control method of the heat pump system in the above embodiments, the embodiments of the present application can provide a computer readable storage medium to implement. The computer readable storage medium has instructions stored thereon, which, when executed by a processor, implement any of the control methods of the heat pump system in the above embodiments.

[0093] The present application is not limited to the particular configurations and processes described above and shown in the drawings. For the sake of brevity, detailed descriptions of known methods are omitted. In the above embodiments, several specific steps are described and illustrated as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and one skilled in the art can make various changes, modifications, and additions, or change the order of the steps, after understanding the spirit of the present application.

[0094] The functional blocks shown in the structural block diagrams above can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application specific integrated circuits (ASICs), appropriate firmware, plug-ins, functional cards, and the like. When implemented in software, the elements of the present application are program or code segments used to perform the required tasks. The program or code segments can be stored in a machine-readable medium or transmitted through a data signal carried in a carrier wave over a transmission medium or communication link. The "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of the machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, and the like. The code segments can be downloaded via a computer network such as the Internet, an intranet, and the like.

[0095] It should also be noted that the example embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps are performed simultaneously.

[0096] Alternatively, the present application also provides a computer program product capable of implementing part or all of each step of the method in the above-mentioned embodiments. The computer program product includes computer programs / instructions, which, when executed by a processor, implement part or all of each step of the method in the above-mentioned embodiments.

[0097] The above is only a specific implementation of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, module and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here. It should be understood that the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A control method for a heat pump system, characterized in that: Applied to heat pump systems, including: Obtaining R290 refrigerant concentrations collected by at least two R290 concentration sensors, the R290 concentration sensors including at least a first concentration sensor and a second concentration sensor, the R290 refrigerant concentrations including a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, the R290 concentration sensors being disposed in a cavity of a compressor of the heat pump system; determining a working state of a first relay according to the first refrigerant concentration, and determining a working state of a second relay according to the second refrigerant concentration; When the first relay and the second relay are both in the closed state, the heat pump system is controlled to operate.

2. The method according to claim 1, characterized in that The obtaining of the R290 refrigerant concentration collected by at least two R290 concentration sensors includes: obtaining a first refrigerant concentration of the first concentration sensor, and determining that the first concentration sensor is abnormal if the first refrigerant concentration is greater than a first preset threshold; And / or, obtaining a second refrigerant concentration from the second concentration sensor, and if the second refrigerant concentration is greater than a second preset threshold, determining that the second concentration sensor is abnormal.

3. The method according to claim 1, characterized in that The obtaining of the R290 refrigerant concentration collected by at least two R290 concentration sensors includes: Obtaining a first concentration difference according to a difference between the first refrigerant concentration and the second refrigerant concentration; If the first concentration difference is greater than a third preset threshold, it is determined that the first concentration sensor or the second concentration sensor is abnormal based on the first refrigerant concentration and the second refrigerant concentration.

4. The method according to claim 1, wherein The determining the working state of the first relay according to the first refrigerant concentration, and determining the working state of the second relay according to the second refrigerant concentration, includes: If the first refrigerant concentration is less than a fourth preset threshold, determining that the working state of the first relay is a closed state; And / or, if the second refrigerant concentration is less than a fifth preset threshold, determining that the working state of the second relay is a closed state.

5. The method according to any one of claims 2-3, characterized in that: Also includes: If the first concentration sensor is abnormal, determining that the working state of the first relay is open; And / or, if the second concentration sensor is abnormal, it is determined that the working state of the second relay is open.

6. The method according to claim 1, characterized in that Also includes: If the first sensor or the second sensor is abnormal, the heat pump system generates a warning message.

7. The method according to claim 1, characterized in that Before obtaining the R290 refrigerant concentration collected by at least two R290 concentration sensors, the following steps are also included: Performing feasibility verification on the first concentration sensor and the second concentration sensor before powering on to obtain a verification result; If the verification result is successful, starting the first concentration sensor and the second concentration sensor; If the verification result is a verification failure, maintenance information is generated.

8. A control device for a heat pump system, characterized in that: include: an acquisition module, configured to acquire an R290 refrigerant concentration collected by at least two R290 concentration sensors, the R290 concentration sensors including at least a first concentration sensor and a second concentration sensor, the R290 refrigerant concentration including a first refrigerant concentration collected by the first concentration sensor and a second refrigerant concentration collected by the second concentration sensor, the R290 concentration sensors being disposed in a cavity of a compressor of the heat pump system; a determination module, configured to determine a working state of a first relay according to the first refrigerant concentration, and to determine a working state of a second relay according to the second refrigerant concentration; A control module is used to control the operation of the heat pump system when the working states of the first relay and the second relay are both in the closed state.

9. An electronic device, characterized in that: include: processor; as well as A memory having executable codes stored thereon, which, when executed by the processor, causes the processor to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: An executable code is stored thereon, and when the executable code is executed by a processor of an electronic device, the processor is caused to execute the method according to any one of claims 1 to 7.

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