Control method and device of air source heat pump unit, storage medium and electronic equipment
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG TCL INTELLIGENT HEATING & VENTILATING EQUIP CO LTD
- Filing Date
- 2026-03-05
- Publication Date
- 2026-05-29
Smart Images
Figure CN122107646A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of heat pump equipment technology, specifically to a control method, device, storage medium, and electronic equipment for an air source heat pump unit. Background Technology
[0002] In air source heat pump units, the drive board (such as an IPM module) is a core electronic control component. During operation, it generates a significant amount of heat, which is typically cooled (fluorine-cooled) by the refrigerant flowing through the drive radiator. However, during cooling or defrosting conditions, the refrigerant flowing through the drive radiator experiences excessively low temperatures due to throttling. When its surface temperature falls below the ambient dew point, condensation occurs. This condensation can lead to short circuits, corrosion, and electrical failures in the drive board, threatening the overall reliability and safety of the air source heat pump unit.
[0003] To prevent condensation, some solutions typically involve installing temperature sensors directly on or inside the radiator to detect the actual radiator temperature and then using this temperature reading for anti-condensation control. However, this approach has several drawbacks. First, it requires installing sensors on the radiator, resulting in high hardware costs. Furthermore, the sensor's installation location and reliability can themselves become new points of failure, leading to weak condensation protection reliability. Second, it requires waiting for the actual radiator temperature to be detected before implementing protective measures, making it a reactive measure with a lag in condensation protection and resulting in low efficiency. Summary of the Invention
[0004] This application provides a control scheme for an air source heat pump unit, which can effectively improve the reliability and efficiency of condensation protection of the air source heat pump unit, and enhance the overall reliability and safety of the air source heat pump unit.
[0005] The embodiments of this application provide the following technical solutions: According to one embodiment of this application, a control method for an air source heat pump unit includes: determining a compensation temperature value based on the main valve opening value of the refrigeration main valve; estimating a predicted temperature value corresponding to the drive radiator based on the detected temperature value of the refrigerant and the compensation temperature value; and determining an anti-condensation action for the drive plate based on the predicted temperature value, so as to control the air source heat pump unit to perform the anti-condensation action.
[0006] In some embodiments of this application, the step of estimating the predicted temperature value corresponding to the drive radiator based on the detected temperature value of the refrigerant and the compensated temperature value includes: determining the preset pipeline temperature rise value corresponding to the detected temperature value; and subtracting the preset pipeline temperature rise value and the compensated temperature value from the detected temperature value to obtain the predicted temperature value.
[0007] In some embodiments of this application, determining the compensation temperature value based on the main valve opening value of the refrigeration main valve includes: subtracting the main valve opening value from the full opening value to obtain an opening difference; and multiplying the opening difference by a preset compensation coefficient to obtain the compensation temperature value.
[0008] In some embodiments of this application, determining the anti-condensation action for the drive board based on the estimated temperature value includes: determining a condensation risk value based on the ambient dew point temperature value and the estimated temperature value; and determining the anti-condensation action corresponding to the unit operating mode based on the unit operating mode and the condensation risk value.
[0009] In some embodiments of this application, determining the condensation risk value based on the ambient dew point temperature value and the estimated temperature value includes: adding the ambient dew point temperature value and a preset safe temperature difference for condensation to obtain a target temperature value; and dividing the target temperature value by the estimated temperature value to obtain the condensation risk value.
[0010] In some embodiments of this application, determining the anti-condensation action corresponding to the unit operating mode based on the unit operating mode and the condensation risk value includes: when the unit operating mode is cooling mode, determining a first preset action corresponding to a first risk level satisfied by the condensation risk value; when the unit operating mode is defrosting mode, determining a second preset action corresponding to a second risk level satisfied by the condensation risk value; wherein, in the cooling mode, the anti-condensation action is the first preset action, and in the defrosting mode, the anti-condensation action is the second preset action.
[0011] In some embodiments of this application, the first preset action corresponding to the first risk level satisfied by the condensation risk value includes: if the first risk level is a first level, the first preset action includes a first control action of the heating main valve and the compressor; if the first risk level is a second level, the first preset action includes a second control action of the cooling main valve, the heating main valve, and the economizer branch valve; if the first risk level is a third level, the first preset action includes a third control action of the cooling main valve, the heating main valve, and the compressor; if the first risk level is a fourth level, the first preset action includes a fourth control action of the cooling main valve, the heating main valve, and the compressor; wherein, the degree of condensation risk corresponding to the first level to the fourth level increases sequentially.
[0012] In some embodiments of this application, the second preset action corresponding to the second risk level satisfied by the condensation risk value includes: if the second risk level is a first level, the second preset action includes a first control action of the cooling main valve, the heating main valve, and the compressor; if the second risk level is a second level, the second preset action includes a second control action of the cooling main valve, the heating main valve, and the four-way valve; if the second risk level is a third level, the second preset action includes a third control action of the cooling main valve, the heating main valve, and the compressor; if the second risk level is a fourth level, the second preset action includes a defrost mode exit action; wherein, the degree of condensation risk corresponding to the first level to the fourth level increases sequentially.
[0013] In some embodiments of this application, after controlling the air source heat pump unit to perform the anti-condensation action, the method includes: determining the protection exit conditions satisfied under the unit operating mode based on the unit operating mode and the condensation risk value; and controlling the air source heat pump unit to perform a preset exit action corresponding to the protection exit conditions.
[0014] According to one embodiment of this application, a control device for an air source heat pump unit is provided. The device includes: a calculation module, configured to: determine a compensation temperature value based on the main valve opening value of the refrigeration main valve; a prediction module, configured to: predict the temperature value corresponding to the drive radiator based on the detected temperature value of the refrigerant and the compensation temperature value; and a determination module, configured to: determine an anti-condensation action for the drive plate based on the predicted temperature value, so as to control the air source heat pump unit to perform the anti-condensation action.
[0015] According to another embodiment of this application, a storage medium stores a computer program thereon, which, when executed by a processor of an electronic device, causes the electronic device to perform the methods described in the embodiments of this application.
[0016] According to another embodiment of this application, an electronic device may include: a memory storing a computer program; and a processor reading the computer program stored in the memory to execute the methods described in the embodiments of this application.
[0017] According to another embodiment of this application, a computer program product or computer program includes computer instructions stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the electronic device to perform the methods provided in the various optional implementations described in the embodiments of this application.
[0018] In this embodiment, a compensation temperature value is determined based on the main valve opening value of the refrigeration main valve; an estimated temperature value corresponding to the drive radiator is obtained by estimating the refrigerant's detected temperature value and the compensation temperature value; and an anti-condensation action for the drive board is determined based on the estimated temperature value to control the air source heat pump unit to perform the anti-condensation action.
[0019] In this embodiment of the application, the predicted temperature value corresponding to the drive radiator is accurately estimated in advance based on the detected and compensated temperature values of the refrigerant. The air source heat pump unit is then controlled to perform anti-condensation actions based on this predicted temperature value. This avoids the hardware cost and low reliability of directly installing temperature sensors on or inside the drive radiator, and allows for proactive protective measures based on the pre-estimated temperature value, avoiding the lag in condensation protection and improving condensation protection efficiency. Overall, this effectively improves the reliability and efficiency of condensation protection on the drive board of the air source heat pump unit, enhancing the overall reliability and safety of the air source heat pump unit. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A system architecture diagram of an air source heat pump unit according to an embodiment of this application is shown.
[0022] Figure 2 A flowchart illustrating a control method for an air source heat pump unit according to an embodiment of this application is shown.
[0023] Figure 3 A flowchart illustrating the action determination process according to one embodiment of this application is shown.
[0024] Figure 4 A block diagram of a control device for an air source heat pump unit according to an embodiment of this application is shown.
[0025] Figure 5 A block diagram of an electronic device according to an embodiment of this application is shown. Detailed Implementation
[0026] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are merely illustrative of the present disclosure and are not intended to limit the present disclosure. Furthermore, the embodiments provided below are some embodiments for implementing the present disclosure, and not all embodiments for implementing the present disclosure. Unless otherwise specified, the technical solutions described in the embodiments of the present disclosure can be implemented in any combination.
[0027] It should be noted that, in the embodiments of this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a method or apparatus that includes a list of elements includes not only the elements expressly described, but also other elements not expressly listed, or elements inherent to implementing the method or apparatus. Without further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other related elements (e.g., steps in the method or units in the apparatus; for example, a unit may be a portion of circuitry, a portion of a processor, a portion of a program or software, etc.) in the method or apparatus that includes that element.
[0028] For example, the control method for an air source heat pump unit provided in this disclosure includes a series of steps. However, the control method for an air source heat pump unit provided in this disclosure is not limited to the steps described. Similarly, the control device for an air source heat pump unit provided in this disclosure includes a series of units. However, the device provided in this disclosure is not limited to the units explicitly described, but may also include units that need to be set up to obtain relevant information or to process information.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure.
[0030] It is understood that in the specific implementation of this application, relevant data is involved. When the embodiments in this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions.
[0031] In air source heat pump units, the drive board (such as an IPM module) is a core electronic control component. During operation, it generates a significant amount of heat, which is typically cooled (fluorine-cooled) by the refrigerant flowing through the drive radiator. However, during cooling or defrosting conditions, the refrigerant flowing through the drive radiator experiences excessively low temperatures due to throttling. When its surface temperature falls below the ambient dew point, condensation occurs. This condensation can lead to short circuits, corrosion, and electrical failures in the drive board, threatening the overall reliability and safety of the air source heat pump unit.
[0032] To prevent condensation, some solutions typically involve installing temperature sensors directly on or inside the radiator to detect the actual radiator temperature and then using this temperature reading for anti-condensation control. However, this approach has several drawbacks. First, it requires installing sensors on the radiator, resulting in high hardware costs. Furthermore, the sensor's installation location and reliability can themselves become new points of failure, leading to weak condensation protection reliability. Second, it requires waiting for the actual radiator temperature to be detected before implementing protective measures, making it a reactive measure with a lag in condensation protection and resulting in low efficiency.
[0033] To address these issues, this application provides a control scheme for an air source heat pump unit, which can effectively improve the reliability and efficiency of condensation protection for the air source heat pump unit, and enhance the overall reliability and safety of the air source heat pump unit.
[0034] The following describes in detail the relevant embodiments of the control scheme for the air source heat pump unit provided in this application. The air source heat pump unit can be a type of unit that utilizes air source heat pumps, such as heating units, modular units, water heaters, multi-split units, etc.
[0035] Figure 1 A schematic diagram illustrating the system structure of an air source heat pump unit according to an embodiment of this application is provided. Figure 1 As shown, an air source heat pump unit may include: an economizer 110, a drive radiator 120, a cooling main valve 130, a heating main valve 140, an economizer branch valve 150, an air-side heat exchanger 160, a water-side heat exchanger 170, a four-way valve 180, and a compressor 190; in addition, it may also include a balance tank 1000 and a one-way valve 1100, etc.
[0036] A drive radiator 120 and a refrigeration main valve 130 are installed on the connecting pipe between the main inlet of the economizer 110 and the water-side heat exchanger 170; a heating main valve 140 and a one-way valve 1100 are installed in parallel on the connecting pipe between the main outlet of the economizer 110 and the air-side heat exchanger 160; an economizer branch valve 150 is installed on the auxiliary connecting branch between the enthalpy-increasing inlet of the economizer 110 and the air-side heat exchanger 160; the enthalpy-increasing outlet of the economizer 110 is connected to the enthalpy-increasing end of the compressor 190. The C end of the four-way valve 180 is connected to the outlet side of the water-side heat exchanger 170; the E end of the four-way valve 180 is connected to the air-side heat exchanger 160; the S end of the four-way valve 180 is connected to the suction end of the compressor 190; and the D end of the four-way valve 180 is connected to the discharge end of the compressor 190. Among them, the cooling flow direction, heating flow direction, enthalpy-increasing flow direction, and water flow direction in this air source heat pump unit, such as... Figure 1 The arrows are marked with the corresponding colors.
[0037] The main cooling valve 130 is primarily used for throttling the refrigerant in the main circuit during cooling / defrosting operations; the main heating valve 140 is primarily used for throttling the refrigerant in the main circuit during heating operations; the economizer branch valve 150 is primarily used to control the refrigerant flow in the economizer branch; and the drive radiator 120 dissipates heat from the refrigerant flowing through it to the drive plate (such as an IPM module, not shown in the figure). Specifically, the main cooling valve 130, the main heating valve 140, and the economizer branch valve 150 can be electronic expansion valves.
[0038] Figure 2 A flowchart illustrating a control method for an air source heat pump unit according to an embodiment of this application is shown. The execution entity of this control method can be a control module with processing capabilities. The control module can be installed in electronic devices such as the air source heat pump unit, remote control, wired controller, mobile phone, computer, smartwatch, and other home appliances. The control module may include at least a memory and a processor. In some embodiments, the control module can be installed on a server (such as a cloud server or physical server) for remote control of the air source heat pump unit.
[0039] In one embodiment of this application, the control module, which serves as the execution body of the control method for the air source heat pump unit, is specifically disposed within the air source heat pump unit. The control module may include a processor and a memory, i.e., the air conditioner includes the processor and memory, with the memory storing a computer program. Thus, the processor in the air source heat pump unit can read the computer program stored in the memory to execute the methods of the various embodiments of this application.
[0040] like Figure 2 As shown, the control method of the air source heat pump unit may include steps S210 to S230.
[0041] Step S210: Determine the compensation temperature value based on the main valve opening value of the refrigeration main valve; Step S220: Based on the detected temperature value and the compensation temperature value of the refrigerant, the estimated temperature value corresponding to the drive radiator is obtained. Step S230: Based on the estimated temperature value, determine the anti-condensation action for the drive board, so as to control the air source heat pump unit to perform the anti-condensation action.
[0042] The opening degree of the refrigeration main valve affects the refrigerant temperature. The corresponding compensation temperature value is determined based on the opening degree of the refrigeration main valve. When estimating the temperature value of the driven radiator, this compensation temperature value can be used to accurately compensate and correct the influence of the opening degree of the refrigeration main valve on the refrigerant temperature.
[0043] Air source heat pump units typically have temperature sensors installed in their cooling or heating circuits. These sensors detect the refrigerant temperature at corresponding locations (i.e., the detected temperature value). For example, the main inlet temperature can be detected using a temperature sensor already installed at the economizer's main inlet, used for purposes such as controlling the plate heat exchanger. This main inlet temperature is then used as the detected temperature value.
[0044] By estimating the refrigerant's detected and compensated temperatures, and then correcting the detected temperatures using the compensated temperature value, the predicted temperature for the radiator can be accurately predicted in advance. Based on this predicted temperature, the anti-condensation action for the radiator can be accurately determined in advance, and the air-source heat pump unit can be controlled to perform the anti-condensation action to prevent condensation from occurring on the radiator.
[0045] In summary, the method described in this embodiment accurately predicts the corresponding temperature value of the drive radiator based on the detected and compensated temperature values of the refrigerant. The air source heat pump unit is then controlled to perform anti-condensation actions based on this predicted temperature value. This avoids the hardware costs and low reliability of directly installing temperature sensors on or inside the drive radiator, and allows for proactive protective measures based on the pre-estimated temperature value, preventing the lag in condensation protection and improving its efficiency. Overall, this effectively improves the reliability and efficiency of condensation protection on the drive board of the air source heat pump unit, enhancing the overall reliability and safety of the unit.
[0046] The following description Figure 1 Further optional specific embodiments are provided for the steps performed when controlling an air source heat pump unit as described in the example.
[0047] In one embodiment, step S210, determining the compensation temperature value based on the main valve opening value of the refrigeration main valve, may include: subtracting the main valve opening value from the full opening value to obtain the opening difference; and multiplying the opening difference by a preset compensation coefficient to obtain the compensation temperature value.
[0048] Specifically, it can be based on the formula The calculated compensation temperature value Where 100% is the full opening value, That is, the main valve opening value (%). The opening difference is K, which is the preset compensation coefficient. The value of K can be set according to the actual situation. For example, in one specific method, K can take a value between 0.1℃ / % and 0.2℃ / %
[0049] The smaller the opening value of the main valve of the refrigeration main valve, the stronger the throttling effect, the lower the refrigerant temperature, and the larger the compensation temperature value calculated according to this embodiment. This compensation temperature value can accurately improve the prediction accuracy of the predicted temperature value when used in the embodiments of this application.
[0050] Optionally, in other embodiments, in step S210, determining the compensation temperature value based on the main valve opening value of the refrigeration main valve includes: querying the compensation temperature value corresponding to the range of the main valve opening value from a preset compensation table.
[0051] In one embodiment, step S220, estimating the predicted temperature value corresponding to the drive radiator based on the detected temperature value and the compensation temperature value of the refrigerant, may include: determining the preset pipeline temperature rise value corresponding to the detected temperature value; subtracting the preset pipeline temperature rise value and the compensation temperature value from the detected temperature value to obtain the predicted temperature value.
[0052] The refrigerant absorbs heat and generates a temperature rise as it flows to the drive radiator (e.g., the refrigerant absorbs heat and generates a temperature rise as it flows from the main refrigeration valve to the drive radiator). Subtracting the preset pipeline temperature rise value and the compensation temperature value from the detected temperature value can further improve the accuracy of the obtained predicted temperature value.
[0053] Specifically, in one example, the detected temperature value is the main inlet temperature of the economizer. Predicted temperature value ,in, This is the preset pipeline temperature rise value (°C). To compensate for temperature values, the preset pipeline temperature rise value can be set according to actual conditions. For example, in one specific method, the preset pipeline temperature rise value is between 0.5℃ and 2℃.
[0054] Optionally, in other embodiments, step S220, estimating the predicted temperature value corresponding to the drive radiator based on the detected temperature value and the compensation temperature value of the refrigerant, may include: querying the predicted temperature value corresponding to the range of the detected temperature value and the compensation temperature value from a preset temperature table.
[0055] In one embodiment, step S230, determining the anti-condensation action for the drive board based on the estimated temperature value, may include: determining a preset action corresponding to the preset temperature range in which the estimated temperature value is located, as the anti-condensation action for the drive board.
[0056] For further details, please refer to [link / reference]. Figure 3 In one embodiment, step S230, determining the anti-condensation action for the drive board based on the estimated temperature value, may include: step S310, determining the condensation risk value based on the ambient dew point temperature value and the estimated temperature value; step S320, determining the corresponding anti-condensation action under the unit operating mode based on the unit operating mode and the condensation risk value.
[0057] In this embodiment, a condensation risk value is further calculated based on the ambient dew point temperature and the estimated temperature. This condensation risk value reflects the degree of condensation risk on the drive board. By combining the unit's operating mode and the condensation risk value, the appropriate anti-condensation action can be more accurately determined under the current unit operating mode. Controlling the air source heat pump unit to execute this anti-condensation action can effectively avoid over-protection or under-protection, further achieving a balance between anti-condensation and system performance.
[0058] In one embodiment, step S310, determining the condensation risk value based on the ambient dew point temperature value and the estimated temperature value, may include: querying a preset risk value corresponding to the ambient dew point temperature value and the estimated temperature value from a preset risk table as the condensation risk value.
[0059] Furthermore, in one embodiment, step S310, determining the condensation risk value based on the ambient dew point temperature and the estimated temperature value, may include: adding the ambient dew point temperature and a preset safe temperature difference for condensation to obtain a target temperature value; and dividing the target temperature value by the estimated temperature value to obtain the condensation risk value. Specifically, this can be done according to the formula R = (T dew +ΔT safe ) / T drv-预测 The condensation risk value R is calculated, where T dew That is, the ambient dew point temperature, ΔT safe That is, the preset safe temperature difference value for condensation, T drv-预测 That is, the estimated temperature value. The applicant discovered that, according to this embodiment, the condensation risk value, which reflects the degree of condensation risk, can be calculated with greater accuracy.
[0060] In one embodiment, step S320, determining the corresponding anti-condensation action under the unit operating mode based on the unit operating mode and condensation risk value, may include: when the unit operating mode is cooling mode, determining a first preset action corresponding to a first risk level satisfied by the condensation risk value; when the unit operating mode is defrosting mode, determining a second preset action corresponding to a second risk level satisfied by the condensation risk value; wherein, the anti-condensation action in cooling mode is the first preset action, and the anti-condensation action in defrosting mode is the second preset action. In this embodiment, under the two different modes of cooling and defrosting, corresponding anti-condensation actions are determined according to different anti-condensation control strategies, further improving the reliability of condensation protection.
[0061] Furthermore, in one embodiment, determining the first preset action corresponding to the first risk level that the condensation risk value satisfies may include: if the first risk level S is a first level S1, then the first preset action F includes a first control action F1 for the heating main valve and the compressor; if the first risk level S is a second level S2, then the first preset action F includes a second control action F2 for the cooling main valve, the heating main valve, and the economizer branch valve; if the first risk level S is a third level S3, then the first preset action F includes a third control action F3 for the cooling main valve, the heating main valve, and the compressor; if the first risk level S is a fourth level S4, then the first preset action F includes a fourth control action F4 for the cooling main valve, the heating main valve, and the compressor; wherein, the degree of condensation risk corresponding to the first level to the fourth level increases sequentially.
[0062] In this embodiment, under the cooling mode, the corresponding components are controlled in a subdivided manner according to the corresponding control actions under different risk levels. That is, a graded, multi-variable collaborative anti-condensation control strategy is adopted, which has a fast response and can effectively avoid system oscillation.
[0063] Furthermore, in one embodiment, determining the second preset action corresponding to the second risk level that the condensation risk value satisfies may include: if the second risk level L is the first level L1, then the second preset action M includes a first control action M1 for the cooling main valve, the heating main valve, and the compressor; if the second risk level L is the second level L2, then the second preset action M includes a second control action M2 for the cooling main valve, the heating main valve, and the four-way valve; if the second risk level L is the third level L3, then the second preset action M includes a third control action M3 for the cooling main valve, the heating main valve, and the compressor; if the second risk level L is the fourth level L4, then the second preset action M includes a defrost mode exit action M4; wherein, the condensation risk level corresponding to the first level to the fourth level increases sequentially.
[0064] In this embodiment, under the defrosting mode, the corresponding components are controlled in a subdivided manner according to the corresponding control actions under different risk levels. That is, a graded, multi-variable collaborative anti-condensation control strategy is adopted, which can respond quickly and effectively avoid system oscillation.
[0065] Furthermore, in one embodiment, after controlling the air source heat pump unit to perform the anti-condensation action, the method may further include: determining the protection exit conditions that must be met under the unit's operating mode based on the unit's operating mode and the condensation risk value; and controlling the air source heat pump unit to perform the preset exit action corresponding to the protection exit conditions.
[0066] After controlling the air source heat pump unit to perform anti-condensation actions, by combining the unit's operating mode and condensation risk value, the protection exit conditions and corresponding preset exit actions that are met under the current unit operating mode can be further accurately determined. Controlling the air source heat pump unit to perform the preset exit actions corresponding to the protection exit conditions can effectively avoid over-protection and further achieve a balance between anti-condensation and system performance.
[0067] In one preferred embodiment, in cooling mode, the conditions 1 for determining whether the condensation risk value R meets the first risk level S, the first preset action F corresponding to the first risk level S, and the protection exit condition 2 and preset exit action are as shown in the table below. EXV1 represents the cooling main valve, EXV2 represents the heating main valve, and EXV3 represents the economizer branch valve.
[0068] S Condition 1 First preset action F Condition 2 Preset Exit Action S1 R≥0.95 F1 (Performance-Priority Limitation): EXV2: Sets a dynamic minimum opening limit value (Min(current demand opening, preset value)) to prevent excessive throttling. Compressor: Limits the rate of increase in its frequency to smooth the increase in refrigerant flow. R < 0.90 for 3 minutes Remove additional restrictions on EXV1 and the compressor. S2 R≥1.0 F2 (Capacity and Safety Balance): EXV2: First increase in opening ΔK1 = +3%~+5% (slightly reduces throttling, increases the inlet temperature of the radiator). EXV1: Second increase in opening ΔK2 = +1%~+3% (slows down the flow rate of the radiator, weakens the refrigerant's heat dissipation capacity). EXV3: Third increase in opening ΔK3 = +2%~+6% (improves the compressor's cooling capacity by enhancing the enthalpy-increasing flow path, positively impacting user comfort). R<0.95 for 2 minutes The opening degrees of EXV2, EXV1, and EXV3 are all reduced by 0.5% to 1% from their current levels, and are adjusted according to normal control procedures. S3 R ≥ 1.1 or R ≥ 1.0 5 minutes after S2 level intervention. F3 (Safety First): EXV1: Forced increase of opening degree by the fourth value ΔK4 = +5%~+8%. EXV2: Forced increase of opening degree by the fifth value ΔK5 = +8%~+12%. Compressor: Frequency reduced by the preset first frequency value ΔF1 = -5Hz. Alarm: Can send a prompt to the user "High humidity environment, cooling capacity temporarily limited to protect equipment". Repeat Operation: If R ≥ 1.1 after maintaining the above operation for 3 minutes, the above EXV1, EXV2 and compressor operations will be repeated again, up to a maximum of 3 times. R<0.95 for 3 minutes Restore normal control and adjustment according to the current frequency and valve opening. S4 The S3 level status has been repeated 3 times, with R ≥ 1.1; or R ≥ 1.0 has persisted for more than 12 minutes. F4 (System Protection): Compressor shuts down. EXV1 and EXV2 are opened to 50%. Condensation risk alarm is triggered. The system will be protected for 30 minutes; or a manual reset may be required. Preset system fault clearing actions In one preferred embodiment, under defrost mode, the following conditions are determined: the condensation risk value R satisfies the second risk level L condition 3, the second preset action M corresponding to the second risk level L, and the protection exit condition 4 and preset exit action are satisfied, as shown in the table below. EXV1 represents the refrigeration main valve, EXV2 represents the heating main valve, and EXV3 represents the economizer branch valve.
[0069] L Condition 3 First preset action M Condition 4 Preset Exit Action L1 R ≥0.90 M1 (Defrosting Intensity Maintenance): EXV1 and EXV2: Maintain the current opening level. Compressor: Limit the rate of increase in its frequency to moderate the increase in refrigerant flow. R<0.85 for 2 minutes Remove the frequency restrictions on EXV1, EXV2 and the compressor. L2 R ≥0.98 M2 (Ensuring Defrosting Process): EXV1: Increase opening by the sixth value ΔK6 = +15% (significantly reduces throttling and quickly increases the estimated temperature). EXV2: Open to 100% (increases the radiator inlet temperature while ensuring improved defrosting capability). Four-way valve: Maintains heating and defrosting status. Record the duration of this stage: The time consumed in this stage needs to be additionally included in the defrosting time compensation. R<0.93 for 1 minute EXV2 and EXV1 Return to Defrosting Demand Opening L3 R ≥ 1.05, or R ≥ 0.98 after 3 minutes of L2 intervention. M3 (Safety First): EXV1: Opening to 100%. EXV2: Opening to 100%. Compressor: Frequency reduced to the preset second frequency value ΔF2 = 10Hz. Exit strategy: If defrosting time > 6 min or coil temperature T0 > 10℃, defrosting will be forcibly exited; otherwise, defrosting mode will be maintained; heating mode can be briefly switched back. R < 0.93 for 1 minute or exit defrost mode. Follow the defrosting control procedure. L4 Level 3 status lasting more than 2 minutes M4 (Immediately Terminate Defrosting): Immediately forces the exit from defrosting mode and switches back to heating mode. Alarm: Condensation risk protection during defrosting. Manual reset; or R < 0.85 for 5 minutes. The next time the system enters defrost mode will be shortened by 10% from the normal cycle, in order to initiate defrosting earlier. To facilitate better implementation of the control method for air source heat pump units provided in the embodiments of this application, the embodiments of this application also provide a control device for air source heat pump units based on the above-described control method. The meanings of the terms used are the same as in the control method for air source heat pump units described above, and specific implementation details can be found in the descriptions in the method embodiments. Figure 4 A block diagram of a control device for an air source heat pump unit according to an embodiment of this application is shown.
[0070] like Figure 4As shown, the control device 400 of the air source heat pump unit may include: a calculation module 410, which can be used to: determine a compensation temperature value based on the main valve opening value of the refrigeration main valve; a prediction module 420, which can be used to: make a prediction based on the detected temperature value of the refrigerant and the compensation temperature value to obtain a predicted temperature value corresponding to the drive radiator; and a determination module 430, which can be used to: determine the anti-condensation action for the drive plate based on the predicted temperature value, so as to control the air source heat pump unit to perform the anti-condensation action.
[0071] In some embodiments of this application, when estimating the estimated temperature value corresponding to the drive radiator based on the detected temperature value of the refrigerant and the compensation temperature value, the estimation module 420 can be used to: determine the preset pipeline temperature rise value corresponding to the detected temperature value; and subtract the preset pipeline temperature rise value and the compensation temperature value from the detected temperature value to obtain the estimated temperature value.
[0072] In some embodiments of this application, when determining the compensation temperature value based on the main valve opening value of the refrigeration main valve, the calculation module 410 can be used to: subtract the main valve opening value from the full opening value to obtain the opening difference; and multiply the opening difference by a preset compensation coefficient to obtain the compensation temperature value.
[0073] In some embodiments of this application, when determining the anti-condensation action for the drive board based on the estimated temperature value, the determining module 430 can be used to: determine the condensation risk value based on the ambient dew point temperature value and the estimated temperature value; and determine the anti-condensation action corresponding to the unit operating mode based on the unit operating mode and the condensation risk value.
[0074] In some embodiments of this application, when determining the condensation risk value based on the ambient dew point temperature value and the estimated temperature value, the determining module 430 can be used to: add the ambient dew point temperature value and the preset condensation safety temperature difference value to obtain the target temperature value; and divide the target temperature value by the estimated temperature value to obtain the condensation risk value.
[0075] In some embodiments of this application, when determining the anti-condensation action corresponding to the unit operating mode based on the unit operating mode and the condensation risk value, the determining module 430 can be used to: when the unit operating mode is a cooling mode, determine a first preset action corresponding to a first risk level satisfied by the condensation risk value; when the unit operating mode is a defrosting mode, determine a second preset action corresponding to a second risk level satisfied by the condensation risk value; wherein, in the cooling mode, the anti-condensation action is the first preset action, and in the defrosting mode, the anti-condensation action is the second preset action.
[0076] In some embodiments of this application, when determining the first preset action corresponding to the first risk level satisfied by the condensation risk value, the determining module 430 can be used to: if the first risk level is a first level, then the first preset action includes a first control action of the heating main valve and the compressor; if the first risk level is a second level, then the first preset action includes a second control action of the cooling main valve, the heating main valve and the economizer branch valve; if the first risk level is a third level, then the first preset action includes a third control action of the cooling main valve, the heating main valve and the compressor; if the first risk level is a fourth level, then the first preset action includes a fourth control action of the cooling main valve, the heating main valve and the compressor; wherein, the degree of condensation risk corresponding to the first level to the fourth level increases sequentially.
[0077] In some embodiments of this application, when determining the second preset action corresponding to the second risk level that the condensation risk value satisfies, the determining module 430 can be used to: if the second risk level is a first level, then the second preset action includes a first control action of the refrigeration main valve, the heating main valve, and the compressor; if the second risk level is a second level, then the second preset action includes a second control action of the refrigeration main valve, the heating main valve, and the four-way valve; if the second risk level is a third level, then the second preset action includes a third control action of the refrigeration main valve, the heating main valve, and the compressor; if the second risk level is a fourth level, then the second preset action includes a defrost mode exit action; wherein, the degree of condensation risk corresponding to the first level to the fourth level increases sequentially.
[0078] In some embodiments of this application, after controlling the air source heat pump unit to perform the anti-condensation action, the device further includes an exit module for: determining the protection exit conditions satisfied under the unit operating mode based on the unit operating mode and the condensation risk value; and controlling the air source heat pump unit to perform the preset exit action corresponding to the protection exit conditions.
[0079] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.
[0080] Furthermore, embodiments of this application also provide an electronic device, such as... Figure 5 As shown, Figure 5 A block diagram of an electronic device according to an embodiment of this application is shown, specifically: The electronic device may include components such as a processor 501 with one or more processing cores, a memory 502 with one or more computer-readable storage media, a power supply 503, and an input unit 504. Those skilled in the art will understand that... Figure 5 The electronic device structure shown does not constitute a limitation on the electronic device and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein: The processor 501 is the control center of the electronic device, connecting various parts of the computer device via various interfaces and lines. It executes software programs and / or modules stored in the memory 502, and calls data stored in the memory 502, to perform various functions of the computer device and process data. Optionally, the processor 501 may include one or more processing cores; preferably, the processor 501 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user page, and application programs, and the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 501.
[0081] The memory 502 can be used to store software programs and modules. The processor 501 executes various functional applications and data processing by running the software programs and modules stored in the memory 502. The memory 502 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device, etc. In addition, the memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 502 may also include a memory controller to provide the processor 501 with access to the memory 502.
[0082] The electronic device also includes a power supply 503 that supplies power to various components. Preferably, the power supply 503 can be logically connected to the processor 501 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 503 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.
[0083] The electronic device may also include an input unit 504, which can be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.
[0084] Although not shown, the electronic device may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 501 in the electronic device can load the executable files corresponding to the processes of one or more computer programs into the memory 502 according to the following instructions, and the processor 501 runs the computer programs stored in the memory 502, thereby realizing the various functions in the foregoing embodiments of this application.
[0085] For example, processor 501 can perform the following actions: determine a compensation temperature value based on the main valve opening value of the refrigeration main valve; estimate the corresponding estimated temperature value for the drive radiator based on the detected temperature value of the refrigerant and the compensation temperature value; and determine an anti-condensation action for the drive board based on the estimated temperature value, so as to control the air source heat pump unit to perform the anti-condensation action.
[0086] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by a computer program, or by a computer program controlling related hardware. The computer program can be stored in a computer-readable storage medium and loaded and executed by a processor.
[0087] Therefore, embodiments of this application also provide a storage medium storing a computer program that can be loaded by a processor to execute the steps in any of the methods provided in embodiments of this application.
[0088] The storage medium can be a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.
[0089] Since the computer program stored in the storage medium can execute the steps of any of the methods provided in the embodiments of this application, the beneficial effects that the methods provided in the embodiments of this application can achieve can be realized. For details, please refer to the previous embodiments, which will not be repeated here.
[0090] According to another embodiment of this application, a computer program product or computer program includes computer instructions stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the electronic device to perform the methods provided in the various optional implementations described in the embodiments of this application.
[0091] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.
[0092] It should be understood that this application is not limited to the embodiments described above and shown in the accompanying drawings, but various modifications and changes can be made without departing from its scope.
Claims
1. A control method for an air source heat pump unit, characterized in that, include: Determine the compensation temperature value based on the main valve opening value of the refrigeration main valve; Based on the detected temperature value of the refrigerant and the compensated temperature value, the estimated temperature value corresponding to the drive radiator is obtained. Based on the estimated temperature value, an anti-condensation action is determined for the drive plate, thereby controlling the air source heat pump unit to perform the anti-condensation action.
2. The method according to claim 1, characterized in that, The step of estimating the predicted temperature value corresponding to the drive radiator based on the detected temperature value of the refrigerant and the compensated temperature value includes: Determine the preset pipeline temperature rise value corresponding to the detected temperature value; The estimated temperature value is obtained by subtracting the preset pipeline temperature rise value and the compensation temperature value from the detected temperature value.
3. The method according to claim 1, characterized in that, The step of determining the compensation temperature value based on the main valve opening value of the refrigeration main valve includes: Subtract the main valve opening value from the full opening value to obtain the opening difference value; The compensation temperature value is obtained by multiplying the opening difference by a preset compensation coefficient.
4. The method according to any one of claims 1 to 3, characterized in that, The step of determining the anti-condensation action for the drive board based on the estimated temperature value includes: The condensation risk value is determined based on the ambient dew point temperature and the estimated temperature value. Based on the unit's operating mode and the condensation risk value, determine the corresponding anti-condensation action under the unit's operating mode.
5. The method according to claim 4, characterized in that, The determination of condensation risk value based on the ambient dew point temperature and the estimated temperature includes: The target temperature value is obtained by adding the ambient dew point temperature value and the preset safe temperature difference value for condensation. The condensation risk value is obtained by dividing the target temperature value by the estimated temperature value.
6. The method according to claim 4, characterized in that, The step of determining the anti-condensation action corresponding to the unit operating mode based on the unit operating mode and the condensation risk value includes: When the unit is operating in cooling mode, determine the first preset action corresponding to the first risk level that the condensation risk value meets; When the unit is operating in defrosting mode, determine the second preset action corresponding to the second risk level that the condensation risk value meets; In the cooling mode, the anti-condensation action is the first preset action, and in the defrosting mode, the anti-condensation action is the second preset action.
7. The method according to claim 6, characterized in that, The first preset action corresponding to the first risk level satisfied by the condensation risk value includes: If the first risk level is Level 1, then the first preset action includes the first control action of the heating main valve and the compressor; If the first risk level is the second level, then the first preset action includes the second control action of the cooling main valve, the heating main valve, and the economizer branch valve. If the first risk level is the third level, then the first preset action includes the third control action of the refrigeration main valve, the heating main valve, and the compressor. If the first risk level is the fourth level, then the first preset action includes the fourth control action of the refrigeration main valve, the heating main valve, and the compressor. The risk of condensation increases sequentially from the first level to the fourth level.
8. The method according to claim 6, characterized in that, The second preset action corresponding to the second risk level satisfied by the condensation risk value includes: If the second risk level is the first level, then the second preset action includes the first control action of the cooling main valve, the heating main valve and the compressor; If the second risk level is the second level, then the second preset action includes the second control action of the cooling main valve, the heating main valve and the four-way valve; If the second risk level is the third level, then the second preset action includes the third control action of the refrigeration main valve, the heating main valve, and the compressor; If the second risk level is level four, then the second preset action includes exiting the defrost mode. The risk of condensation increases sequentially from the first level to the fourth level.
9. The method according to claim 4, characterized in that, After controlling the air source heat pump unit to perform the anti-condensation action, the method includes: Based on the unit operation mode and the condensation risk value, determine the protection exit conditions that must be met under the unit operation mode; Control the air source heat pump unit to execute the preset exit action corresponding to the protection exit condition.
10. A control device for an air source heat pump unit, characterized in that, include: The calculation module is used to determine the compensation temperature value based on the main valve opening value of the refrigeration main valve. The estimation module is used to: estimate the estimated temperature value corresponding to the drive radiator based on the detected temperature value of the refrigerant and the compensation temperature value. The determining module is used to: determine the anti-condensation action for the drive board based on the estimated temperature value, so as to control the air source heat pump unit to perform the anti-condensation action.
11. A storage medium, characterized in that, It stores a computer program that, when executed by the processor of the electronic device, causes the electronic device to perform the method described in any one of claims 1 to 9.
12. An electronic device, characterized in that, include: Memory, which stores computer programs; A processor reads a computer program stored in memory to perform the method described in any one of claims 1 to 9.