Auxiliary valve control method and device of heat pump and storage medium

Abstract

The invention discloses an auxiliary valve control method and device of a heat pump and a storage medium. The method comprises the steps that the target exhaust superheat degree is set for the heat pump; the actual exhaust superheat degree of the heat pump is collected in the multiple exhaust periods; the difference value between the target exhaust superheat degree and the actual exhaust superheat degree is calculated, and the actual exhaust superheat degree deviation is obtained; according to the actual exhaust superheat degree deviation, the unit exhaust superheat degree change rate of the heat pump in unit time in the exhaust period is calculated; according to the actual exhaust superheat degree deviation, the target exhaust superheat degree and the unit exhaust superheat degree change rate, the valve adjusting period and proportion parameters of an auxiliary electronic expansion valve of the heat pump are adjusted under the condition that the future exhaust superheat degree of the heat pump is predicted; and an auxiliary electronic expansion valve of the heat pump is adjusted in the current valve adjusting period according to the proportion parameter, the valve adjusting period, the actual exhaust superheat degree deviation and the unit exhaust superheat degree change rate. The response speed is effectively increased, the adjusting accuracy is improved, and the exhaust superheat degree of the heat pump rapidly reaches the set state.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pumps, and in particular to a control method, device and storage medium for an auxiliary valve of a heat pump. Background Art

[0002] In a heat pump, an auxiliary electronic expansion valve (hereinafter referred to as an auxiliary valve) is provided to precisely control the refrigerant flow rate. By reasonably adjusting the opening degree of the auxiliary valve, the refrigerant flow rate in the evaporator of the heat pump can be matched with the heat load.

[0003] Currently, the auxiliary valve is mainly controlled in a PID (Proportional-Integral-Derivative) manner based on the exhaust superheat of the heat pump. However, the exhaust superheat has certain hysteresis and one-sidedness in reflecting the state of the heat pump. Therefore, controlling the auxiliary valve based on the exhaust superheat of the heat pump has a slow response speed and is prone to over-regulation problems, resulting in performance fluctuations and poor self-adaptability of the heat pump, and causing conditions such as liquid impact and low energy efficiency of the compressor in the heat pump, and easily putting the heat pump in a dangerous state of abnormal control. Summary of the Invention

[0004] In view of this, the present invention provides a control method, device and storage medium for an auxiliary valve of a heat pump to improve the timeliness and stability of controlling the auxiliary electronic expansion valve of the heat pump.

[0005] The first aspect of the present invention provides a control method for an auxiliary valve of a heat pump, including:

[0006] Setting a target exhaust superheat for the heat pump;

[0007] Collecting the actual exhaust superheat of the heat pump in multiple exhaust cycles;

[0008] Calculating the difference between the target exhaust superheat and the actual exhaust superheat to obtain the actual exhaust superheat deviation;

[0009] Calculating the unit exhaust superheat change rate per unit time of the heat pump in the exhaust cycle according to the actual exhaust superheat deviation;

[0010] Adjusting the valve adjustment cycle and proportional parameter of the auxiliary electronic expansion valve of the heat pump according to the actual exhaust superheat deviation, the target exhaust superheat and the unit exhaust superheat change rate under the condition of predicting the future exhaust superheat of the heat pump;

[0011] Adjusting the auxiliary electronic expansion valve of the heat pump within the current valve adjustment cycle according to the proportional parameter, the valve adjustment cycle, the actual exhaust superheat deviation and the unit exhaust superheat change rate.

[0012] The second aspect of the present invention provides a control device for an auxiliary valve of a heat pump, including:

[0013] A target exhaust superheat degree setting module for setting a target exhaust superheat degree for a heat pump;

[0014] An actual exhaust superheat degree acquisition module for acquiring the actual exhaust superheat degree of the heat pump in multiple exhaust cycles;

[0015] An actual exhaust superheat degree deviation calculation module for calculating the difference between the target exhaust superheat degree and the actual exhaust superheat degree to obtain an actual exhaust superheat degree deviation;

[0016] A unit exhaust superheat degree change rate calculation module for calculating the unit exhaust superheat degree change rate per unit time of the heat pump in the exhaust cycle according to the actual exhaust superheat degree deviation;

[0017] A future parameter adjustment module for adjusting the adjustment valve cycle and proportional parameters of the auxiliary electronic expansion valve of the heat pump under the condition of predicting the future exhaust superheat degree of the heat pump according to the actual exhaust superheat degree deviation, the target exhaust superheat degree and the unit exhaust superheat degree change rate;

[0018] An auxiliary valve adjustment module for adjusting the auxiliary electronic expansion valve of the heat pump within the current adjustment valve cycle according to the proportional parameter, the adjustment valve cycle, the actual exhaust superheat degree deviation and the unit exhaust superheat degree change rate.

[0019] The third aspect of the present invention provides an electronic device, and the electronic device includes:

[0020] At least one processor; and

[0021] A memory communicatively connected to the at least one processor; wherein,

[0022] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the auxiliary valve control method of the heat pump as described in the first aspect above.

[0023] The fourth aspect of the present invention provides a computer-readable storage medium, and the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the auxiliary valve control method of the heat pump as described in the first aspect above.

[0024] The fifth aspect of the present invention provides a computer program product, and the computer program product includes a computer program, and when the computer program is executed by a processor, it implements the auxiliary valve control method of the heat pump as described in the first aspect above.

[0025] In this embodiment, a target discharge superheat degree is set for the heat pump; the actual discharge superheat degree of the heat pump is collected during multiple discharge cycles; the difference between the target discharge superheat degree and the actual discharge superheat degree is calculated to obtain the actual discharge superheat degree deviation; the unit discharge superheat degree change rate per unit time of the heat pump during the discharge cycle is calculated based on the actual discharge superheat degree deviation; the regulating valve cycle and proportional parameters of the auxiliary electronic expansion valve of the heat pump are adjusted under the condition of predicting the future discharge superheat degree of the heat pump according to the actual discharge superheat degree deviation, the target discharge superheat degree and the unit discharge superheat degree change rate; the auxiliary electronic expansion valve of the heat pump is adjusted within the current regulating valve cycle according to the proportional parameter, the regulating valve cycle, the actual discharge superheat degree deviation and the unit discharge superheat degree change rate. This embodiment predicts the future state of the heat pump, intervenes in the adjustment control of the auxiliary electronic expansion valve of the heat pump in advance, effectively improves the response speed, and comprehensively adjusts the auxiliary electronic expansion valve of the heat pump with a variety of different operating parameters, improves the adjustment accuracy, enables the discharge superheat degree of the heat pump to quickly reach the set state, realizes the rapid adaptive adjustment of the heat pump, ensures the stable performance of the heat pump, and makes the heat pump in an efficient and reliable state.

[0026] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a flowchart of a method for controlling an auxiliary valve of a heat pump provided in Embodiment 1 of the present invention.

[0029] Figure 2 It is a schematic structural diagram of an auxiliary valve control device of a heat pump provided in Embodiment 2 of the present invention.

[0030] Figure 3 It is a schematic structural diagram of an electronic device provided in Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can cover the sequential embodiments other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0033] Embodiment 1

[0034] See Figure 1 , which shows a flowchart of a method for controlling an auxiliary valve of a heat pump provided in Embodiment 1 of the present invention. This method can be executed by a control device for the auxiliary valve of the heat pump. The control device for the auxiliary valve of the heat pump can be implemented in the form of hardware and / or software, and the control device for the auxiliary valve of the heat pump can be configured in an electronic device. As Figure 1 shown, the method includes:

[0035] Step 101, set a target exhaust superheat degree for the heat pump.

[0036] In this embodiment, operating parameters such as the ambient temperature of the heat pump and the outlet water temperature of the heat pump can be queried, and based on these operating parameters, the exhaust superheat degree as the adjustment target is set for the heat pump according to the thermodynamic principle and the relevant configuration parameters in the heat pump, denoted as the target exhaust superheat degree TESH.

[0037] For example, when the ambient temperature is low, the evaporation temperature of the heat pump will also decrease accordingly. To prevent the evaporator from frosting and ensure the safe operation of the compressor, the target exhaust superheat degree TESH is appropriately increased. When the ambient temperature is high, the evaporation temperature is relatively high, and the evaporation speed of the refrigerant is accelerated. At this time, the target exhaust superheat degree TESH can be appropriately reduced.

[0038] For another example, when the outlet water temperature is low, it means that the refrigeration capacity demand of the heat pump is large, and the evaporation pressure of the refrigerant in the evaporator is low. To ensure the heat exchange effect of the evaporator and the stability of the system, the target exhaust superheat TESH is increased to allow the refrigerant to fully evaporate in the evaporator. When the outlet water temperature is high, the heat output demand of the heat pump is small, and the evaporation pressure of the refrigerant in the evaporator is relatively high. At this time, the target exhaust superheat TESH can be appropriately reduced to improve the heating efficiency of the heat pump.

[0039] Step 102: Collect the actual exhaust superheat of the heat pump during multiple exhaust cycles.

[0040] In this embodiment, multiple cycles for collecting the exhaust superheat of the heat pump can be set on the time axis, denoted as the exhaust cycle TE. During multiple exhaust cycles, the operating parameters of the compressor of the heat pump (such as the exhaust temperature of the compressor, the exhaust pressure of the compressor, etc.) can be collected in real time, and the exhaust superheat of the heat pump is calculated based on these operating parameters of the compressor, denoted as the actual exhaust superheat CESH.

[0041] Step 103: Calculate the difference between the target exhaust superheat and the actual exhaust superheat to obtain the actual exhaust superheat deviation.

[0042] In this embodiment, the target exhaust superheat TESH can be subtracted from the actual exhaust superheat CESH to obtain the actual exhaust superheat deviation EDSH, that is, EDSH = TESH - CESH. The actual exhaust superheat deviation EDSH represents the degree to which the target exhaust superheat TESH deviates from the actual exhaust superheat CESH.

[0043] Step 104: Calculate the unit exhaust superheat change rate per unit time of the heat pump during the exhaust cycle based on the actual exhaust superheat deviation.

[0044] In this embodiment, the actual exhaust superheat deviations EDSH of each exhaust cycle TE can be arranged in chronological order to obtain a time series. Statistical analysis is performed on the actual exhaust superheat deviations EDSH within the time series to obtain the exhaust superheat that changes per unit time during the exhaust cycle of the heat pump, which is used as the unit exhaust superheat change rate PSRCESH.

[0045] In a specific implementation, the actual exhaust superheats CESH of two adjacent exhaust cycles TE are extracted from the time series. The actual exhaust superheat CESH in the current exhaust cycle is subtracted from the actual exhaust superheat CESH' in the previous exhaust cycle to obtain the exhaust superheat change rate RCESH. The ratio of the exhaust superheat change rate RCESH to the exhaust cycle TE is calculated as the unit exhaust superheat change rate PSRCESH, that is, PSRCESH = RCESH / TE = (CESH - CESH') / TE.

[0046] Step 105: Adjust the valve adjustment cycle and proportional parameter of the auxiliary electronic expansion valve of the heat pump according to the actual exhaust superheat deviation, target exhaust superheat, and unit exhaust superheat change rate under the condition of predicting the future exhaust superheat of the heat pump.

[0047] In this embodiment, the future exhaust superheat of the heat pump can be predicted based on the real-time operation data of the heat pump (i.e., the actual exhaust superheat deviation EDSH, target exhaust superheat TESH, and unit exhaust superheat change rate PSRCESH). Under this condition, adjust the valve adjustment cycle T and proportional parameter P (i.e., the P value in PID) of the auxiliary electronic expansion valve of the heat pump, intervene in the adjustment control in advance, and continuously adjust during the process of controlling the heat pump, so that the exhaust superheat of the heat pump quickly reaches the set state.

[0048] In an embodiment of the present invention, step 105 may include the following steps:

[0049] Step 1051: Calculate the estimated exhaust superheat of the heat pump after multiple valve adjustment cycles T in the future according to the unit exhaust superheat change rate.

[0050] In this embodiment, the exhaust superheat of the heat pump after multiple valve adjustment cycles T of the auxiliary electronic expansion valve in the future can be calculated according to the unit exhaust superheat change rate PSRCESH, denoted as the estimated exhaust superheat EstESH.

[0051] Among them, the valve adjustment cycle T is the cycle for adjusting the auxiliary electronic expansion valve of the heat pump. During the process of controlling the heat pump, the valve adjustment cycle T is an adjustable parameter.

[0052] In the initial period (such as the first n times of predicting the estimated exhaust superheat EstESH of the heat pump, n is a positive integer), the valve adjustment cycle T is the default empirical value.

[0053] In the non-initial period, the current valve adjustment cycle T is used to predict the estimated exhaust superheat EstESH of the heat pump.

[0054] In specific implementation, the current valve adjustment cycle T of the auxiliary electronic expansion valve of the heat pump can be queried, and the product of the current valve adjustment cycle T, unit exhaust superheat change rate PSRCESH, and the preset number of cycles m (such as 2) is added to the current actual exhaust superheat CESH to obtain the estimated exhaust superheat EstESH of the heat pump after multiple valve adjustment cycles T in the future, that is, EstESH = T × PSRCESH × m + CESH.

[0055] Step 1052: Take the absolute value of the difference between the estimated exhaust superheat and the target exhaust superheat to obtain the estimated exhaust superheat deviation.

[0056] In this embodiment, the absolute value of the difference between the estimated exhaust superheat EstESH and the target exhaust superheat TESH can be taken to obtain the estimated exhaust superheat deviation, that is, estimated exhaust superheat deviation = ABS(EstESH - TESH), where ABS is the function for taking the absolute value, such that the estimated exhaust superheat deviation represents the degree to which the estimated exhaust superheat EstESH of the heat pump deviates from the target exhaust superheat TESH after multiple valve adjustment cycles T in the future.

[0057] Step 1053: If the estimated exhaust superheat deviation is less than or equal to the preset steady-state value, adjust the valve adjustment cycle of the auxiliary electronic expansion valve of the heat pump to the upper limit value, and adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump to the lower limit value.

[0058] [[ID=⑥]]If the estimated exhaust superheat deviation is less than or equal to the preset steady-state value D2, it means that the degree to which the estimated exhaust superheat EstESH of the heat pump deviates from the target exhaust superheat TESH after multiple valve adjustment cycles T of the auxiliary electronic expansion valve in the future is small, and the estimated exhaust superheat EstESH of the heat pump fluctuates around the target exhaust superheat TESH after multiple valve adjustment cycles T of the auxiliary electronic expansion valve in the future. At this time, adjust the valve adjustment cycle T of the auxiliary electronic expansion valve of the heat pump to the upper limit value T3 within its adjustable range, and adjust the proportional parameter P of the auxiliary electronic expansion valve of the heat pump to the lower limit value P3 within its adjustable range, so as to maintain the control state of the heat pump.

[0059] Step 1054: If the estimated exhaust superheat deviation is greater than the preset steady-state value, adjust the valve adjustment cycle of the auxiliary electronic expansion valve of the heat pump within the range below the upper limit value according to the actual exhaust superheat deviation, the target exhaust superheat, and the unit exhaust superheat change rate.

[0060] If the estimated exhaust superheat deviation is greater than the preset steady-state value D2, it means that the degree to which the estimated exhaust superheat EstESH of the heat pump deviates from the target exhaust superheat TESH after multiple valve adjustment cycles T of the auxiliary electronic expansion valve in the future is large. At this time, the valve adjustment cycle T of the auxiliary electronic expansion valve of the heat pump can be adjusted within the range below the upper limit value according to the actual exhaust superheat deviation EDSH, the target exhaust superheat TESH, and the unit exhaust superheat change rate PSRCESH, that is, the adjusted valve adjustment cycle T is less than the upper limit value T3.

[0061] In an embodiment of the present invention, step 1054 may further include the following steps:

[0062] Step 10541: Set the target exhaust temperature change rate for the heat pump according to the actual exhaust superheat deviation.

[0063] In this embodiment, methods such as look-up table and function operation can be used to set the change rate of the exhaust gas temperature as the adjustment target for the heat pump according to the actual exhaust gas superheat deviation EDSH, which is denoted as the target exhaust gas temperature change rate TPSRCESH.

[0064] Among them, the target exhaust gas temperature change rate TPSRCESH is negatively correlated with the actual exhaust gas superheat deviation EDSH, that is, the larger the actual exhaust gas superheat deviation EDSH, the smaller the target exhaust gas temperature change rate TPSRCESH; conversely, the smaller the actual exhaust gas superheat deviation EDSH, the larger the target exhaust gas temperature change rate TPSRCESH.

[0065] In specific implementation, on the one hand, the first superheat change deviation threshold and the second superheat change deviation threshold for setting the actual exhaust gas superheat deviation EDSH and applicable to adjusting the valve opening period T of the auxiliary electronic expansion valve of the heat pump can be queried.

[0066] Among them, the first superheat change deviation threshold is less than the second superheat change deviation threshold.

[0067] The first superheat change deviation threshold and its opposite number, the second superheat change deviation threshold and its opposite number can divide into 5 segments.

[0068] On the other hand, the first change rate TPSRCESH0, the second change rate TPSRCESH1 and the third change rate TPSRCESH2 set for the target exhaust gas temperature change rate TPSRCESH of the heat pump can be queried.

[0069] Among them, the first change rate TPSRCESH0 is less than the second change rate TPSRCESH1, and the second change rate TPSRCESH1 is less than the third change rate TPSRCESH2.

[0070] If the actual exhaust gas superheat deviation EDSH is less than the opposite number of the second superheat change deviation threshold, the target exhaust gas temperature change rate TPSRCESH of the heat pump is set to the third change rate TPSRCESH2, that is, TPSRCESH = TPSRCESH2.

[0071] If the actual exhaust gas superheat deviation EDSH is greater than or equal to the opposite number of the second superheat change deviation threshold and less than the opposite number of the first superheat change deviation threshold, the target exhaust gas temperature change rate TPSRCESH of the heat pump is set to the second change rate TPSRCESH1, that is, TPSRCESH = TPSRCESH1.

[0072] If the actual exhaust superheat deviation EDSH is greater than or equal to the negative of the first superheat change deviation threshold and less than the first superheat change deviation threshold, then set the target exhaust temperature change rate TPSRCESH of the heat pump to the first change rate TPSRCESH0, i.e., TPSRCESH = TPSRCESH0.

[0073] If the actual exhaust superheat deviation EDSH is greater than or equal to the first superheat change deviation threshold and less than or equal to the second superheat change deviation threshold, then set the target exhaust temperature change rate TPSRCESH of the heat pump to the negative of the second change rate TPSRCESH1, i.e., TPSRCESH = -TPSRCESH1.

[0074] If the actual exhaust superheat deviation EDSH is greater than the second superheat change deviation threshold, then set the target exhaust temperature change rate TPSRCESH of the heat pump to the negative of the third change rate TPSRCESH2, i.e., TPSRCESH = -TPSRCESH2.

[0075] Of course, the above method of setting the target exhaust temperature change rate TPSRCESH of the heat pump is only an example. When implementing this embodiment, other methods of setting the target exhaust temperature change rate TPSRCESH of the heat pump can be set according to actual situations. For example, multiple thresholds for setting the adjustment valve cycle T of the auxiliary electronic expansion valve of the heat pump for the actual exhaust superheat deviation EDSH can be set to divide more segments, and more values can be set for the target exhaust temperature change rate TPSRCESH of the heat pump to map to more segments, etc. This embodiment does not limit this. In addition, in addition to the above method of setting the target exhaust temperature change rate TPSRCESH of the heat pump, those skilled in the art can also adopt other methods of setting the target exhaust temperature change rate TPSRCESH of the heat pump according to actual needs, and this embodiment also does not limit this.

[0076] Step 10542: Query the first cycle value, the second cycle value, and the third cycle value of the adjustment valve cycle setting of the auxiliary electronic expansion valve of the heat pump within the range below the upper limit value.

[0077] Query the first cycle value T0, the second cycle value T1, and the third cycle value T2 of the adjustment valve cycle T setting of the auxiliary electronic expansion valve of the heat pump within the range below the upper limit value.

[0078] Among them, the first cycle value T0 is less than the second cycle value T1, the second cycle value T1 is less than the third cycle value T2, and the third cycle value T2 is less than the upper limit value T3.

[0079] Step 10543: Take the absolute value of the difference between the unit exhaust superheat change rate and the target exhaust temperature change rate to obtain the superheat change rate deviation.

[0080] In this embodiment, the absolute value of the difference between the unit exhaust superheat change rate PSRCESH and the target exhaust temperature change rate TPSRCESH can be taken to obtain the superheat change rate deviation, so that the superheat change rate deviation represents the degree to which the unit exhaust superheat change rate PSRCESH deviates from the target exhaust temperature change rate TPSRCESH.

[0081] Step 10544: If the superheat change rate deviation is less than or equal to the preset change deviation, adjust the valve adjustment period of the auxiliary electronic expansion valve of the heat pump to the first period value.

[0082] If the superheat change rate deviation is less than or equal to the preset change deviation D1 (i.e., ABS(PSRCESH - TPSRCESH) < D1, where ABS is the absolute value function), it means that the unit exhaust superheat change rate PSRCESH fluctuates around the target exhaust temperature change rate TPSRCESH and the magnitude of the unit exhaust superheat change rate PSRCESH is appropriate. Then, adjust the valve adjustment period T of the auxiliary electronic expansion valve of the heat pump to the first period value T0, that is, T = T0.

[0083] Step 10545: If the unit exhaust superheat change rate is less than the difference between the target exhaust temperature change rate and the preset change deviation, adjust the valve adjustment period of the auxiliary electronic expansion valve of the heat pump to the second period value.

[0084] If the unit exhaust superheat change rate PSRCESH is less than the difference between the target exhaust temperature change rate TPSRCESH and the preset change deviation D1 (i.e., PSRCESH < TPSRCESH - D1), it means that the unit exhaust superheat change rate PSRCESH is too small. Then, adjust the valve adjustment period T of the auxiliary electronic expansion valve of the heat pump to the second period value T1, that is, T = T1.

[0085] Step 10546: If the unit exhaust superheat change rate is greater than the sum value of the target exhaust temperature change rate and the preset change deviation, adjust the valve adjustment period of the auxiliary electronic expansion valve of the heat pump to the third period value.

[0086] If the unit exhaust superheat change rate PSRCESH is greater than the sum value of the target exhaust temperature change rate TPSRCESH and the preset change deviation D1 (i.e., PSRCESH > TPSRCESH + D1), it means that the unit exhaust superheat change rate PSRCESH is too large. Then, adjust the valve adjustment period T of the auxiliary electronic expansion valve of the heat pump to the third period value T2, that is, T = T2.

[0087] Of course, the above method of adjusting the valve adjustment period of the auxiliary electronic expansion valve of the heat pump is only an example. When implementing this embodiment, other methods of adjusting the valve adjustment period of the auxiliary electronic expansion valve of the heat pump can be set according to actual situations. For example, using the unit exhaust superheat change rate PSRCESH, the target exhaust temperature change rate TPSRCESH, and the change deviation D1 to set more segments, and setting more values for the valve adjustment period of the auxiliary electronic expansion valve of the heat pump to map to more segments, etc. This embodiment does not limit this. In addition, in addition to the above method of adjusting the valve adjustment period of the auxiliary electronic expansion valve of the heat pump, those skilled in the art can also adopt other methods of adjusting the valve adjustment period of the auxiliary electronic expansion valve of the heat pump according to actual needs, and this embodiment does not limit this either.

[0088] Step 1055: Adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump within the range above the lower limit according to the actual exhaust superheat deviation.

[0089] In this embodiment, the proportional parameter P of the auxiliary electronic expansion valve of the heat pump can be adjusted within the range above the lower limit value P3 according to the actual exhaust superheat deviation EDSH, that is, the adjusted proportional parameter P is greater than the lower limit value P3.

[0090] Among them, the proportional parameter P is negatively correlated with the absolute value of the actual exhaust superheat deviation EDSH, that is, the larger the absolute value of the actual exhaust superheat deviation EDSH, the smaller the proportional parameter P; conversely, the smaller the absolute value of the actual exhaust superheat deviation EDSH, the larger the proportional parameter P.

[0091] In specific implementation, on the one hand, the first superheat proportional deviation threshold and the second superheat proportional deviation threshold set for the actual exhaust superheat deviation EDSH and applicable to adjusting the proportional parameter P of the auxiliary electronic expansion valve of the heat pump can be queried.

[0092] Among them, the first superheat proportional deviation threshold is less than the second superheat proportional deviation threshold.

[0093] The first superheat proportional deviation threshold and its opposite number, the second superheat proportional deviation threshold and its opposite number can divide into 5 segments.

[0094] On the other hand, the first proportional value P0, the second proportional value P1, and the third proportional value P2 set for the proportional parameter P of the auxiliary electronic expansion valve of the heat pump can be queried within the range above the lower limit value P3.

[0095] Among them, the lower limit value P3 is less than the first proportional value P0, the first proportional value P0 is less than the second proportional value P1, and the second proportional value P1 is less than the third proportional value P2.

[0096] If the actual exhaust superheat deviation EDSH is less than the negative value of the second superheat ratio deviation threshold, then adjust the proportional parameter P of the auxiliary electronic expansion valve of the heat pump to the third proportional value P2, i.e., P = P2.

[0097] If the actual exhaust superheat deviation EDSH is greater than or equal to the negative value of the second superheat ratio deviation threshold and less than the negative value of the first superheat ratio deviation threshold, then adjust the proportional parameter P of the auxiliary electronic expansion valve of the heat pump to the second proportional value P1, i.e., P = P1.

[0098] If the actual exhaust superheat deviation EDSH is greater than or equal to the negative value of the first superheat ratio deviation threshold and less than or equal to the first superheat ratio deviation threshold, then adjust the proportional parameter P of the auxiliary electronic expansion valve of the heat pump to the first proportional value P0, i.e., P = P0.

[0099] If the actual exhaust superheat deviation EDSH is greater than or equal to the first superheat ratio deviation threshold and less than or equal to the second superheat ratio deviation threshold, then adjust the proportional parameter P of the auxiliary electronic expansion valve of the heat pump to the second proportional value P1, i.e., P = P1.

[0100] If the actual exhaust superheat deviation EDSH is greater than the second superheat ratio deviation threshold, then adjust the proportional parameter P of the auxiliary electronic expansion valve of the heat pump to the third proportional value P2, i.e., P = P2.

[0101] Certainly, the above method of adjusting the proportional parameter P is only an example. When implementing this embodiment, other methods of adjusting the proportional parameter P can be set according to actual situations. For example, multiple thresholds for the actual exhaust superheat deviation EDSH can be set to divide more segments, and more values for the proportional parameter P of the auxiliary electronic expansion valve of the heat pump can be set to map to more segments, etc. This embodiment does not limit this. In addition, in addition to the above method of adjusting the proportional parameter P, those skilled in the art can also adopt other methods of adjusting the proportional parameter P according to actual needs, and this embodiment does not limit this either.

[0102] Step 106: Adjust the auxiliary electronic expansion valve of the heat pump within the current valve adjustment cycle according to the proportional parameter, valve adjustment cycle, actual exhaust superheat deviation, and unit exhaust superheat change rate.

[0103] In this embodiment, the auxiliary electronic expansion valve of the heat pump can be adjusted within the current valve adjustment cycle comprehensively according to the proportional parameter P, valve adjustment cycle T, actual exhaust superheat deviation EDSH, and unit exhaust superheat change rate PSRCESH.

[0104] In a specific implementation, the proportional parameter P, the regulating valve period T, the actual exhaust superheat deviation EDSH, and the unit exhaust superheat change rate PSRCESH are input into the proportional-integral-derivative function set for the auxiliary electronic expansion valve of the heat pump for operation to obtain the number of regulation steps Step within the current regulating valve period T, that is, Step = EviPID(P, T, EDSH, PSRCESH), where EviPID is the proportional-integral-derivative function set for the auxiliary electronic expansion valve of the heat pump.

[0105] The auxiliary electronic expansion valve of the heat pump is adjusted according to the number of regulation steps Step. Among them, when the number of regulation steps Step is negative, the opening degree of the auxiliary electronic expansion valve of the heat pump is reduced; when the number of regulation steps Step is positive, the opening degree of the auxiliary electronic expansion valve of the heat pump is increased.

[0106] When the opening degree of the auxiliary electronic expansion valve of the heat pump increases, more refrigerant will enter the evaporator, and the amount of refrigerant that absorbs heat and evaporates in the evaporator increases.

[0107] When the opening degree of the auxiliary electronic expansion valve of the heat pump decreases, the amount of refrigerant entering the evaporator decreases, and the refrigerant absorbs heat fully in the evaporator, causing the superheat of the refrigerant vapor at the outlet of the evaporator to increase, and the exhaust superheat also increases accordingly.

[0108] Reasonably adjusting the opening degree of the auxiliary electronic expansion valve of the heat pump can make the refrigerant flow rate in the evaporator match the heat load. Under different operating conditions of the heat pump, such as different ambient temperatures, indoor loads, etc., accurately controlling the refrigerant flow rate through the auxiliary electronic expansion valve of the heat pump can keep the refrigerant at the outlet of the evaporator at an appropriate superheat. This can avoid problems such as liquid slugging damage to the compressor caused by liquid carryover during suction (too low superheat), or too high superheat resulting in too high compressor exhaust temperature and system performance degradation. Thus, the heat pump system can maintain good performance and efficiency under different working conditions, and the exhaust superheat can also be maintained within a reasonable range, optimizing the performance of the heat pump.

[0109] In this embodiment, a target exhaust superheat degree is set for the heat pump; the actual exhaust superheat degree of the heat pump is collected in multiple exhaust cycles; the difference between the target exhaust superheat degree and the actual exhaust superheat degree is calculated to obtain the actual exhaust superheat degree deviation; the unit exhaust superheat degree change rate per unit time of the heat pump in the exhaust cycle is calculated based on the actual exhaust superheat degree deviation; the regulating valve cycle and proportional parameters of the auxiliary electronic expansion valve of the heat pump are adjusted according to the actual exhaust superheat degree deviation, the target exhaust superheat degree and the unit exhaust superheat degree change rate under the condition of predicting the future exhaust superheat degree of the heat pump; the auxiliary electronic expansion valve of the heat pump is adjusted within the current regulating valve cycle according to the proportional parameters, the regulating valve cycle, the actual exhaust superheat degree deviation and the unit exhaust superheat degree change rate. This embodiment predicts the future state of the heat pump and intervenes in the adjustment control of the auxiliary electronic expansion valve of the heat pump in advance, effectively improving the response speed. Moreover, the auxiliary electronic expansion valve of the heat pump is adjusted by integrating a variety of different operating parameters, improving the adjustment accuracy, enabling the exhaust superheat degree of the heat pump to quickly reach the set state, realizing the rapid adaptive adjustment of the heat pump, ensuring the stable performance of the heat pump, and making the heat pump in an efficient and reliable state.

[0110] Embodiment Two

[0111] Refer to Figure 2 , which shows a schematic structural diagram of an auxiliary valve control device for a heat pump provided by Embodiment Two of the present invention. As Figure 2 shown, the device includes:

[0112] A target exhaust superheat degree setting module 201, configured to set a target exhaust superheat degree for the heat pump;

[0113] An actual exhaust superheat degree collection module 202, configured to collect the actual exhaust superheat degree of the heat pump in multiple exhaust cycles;

[0114] An actual exhaust superheat degree deviation calculation module 203, configured to calculate the difference between the target exhaust superheat degree and the actual exhaust superheat degree to obtain the actual exhaust superheat degree deviation;

[0115] A unit exhaust superheat degree change rate calculation module 204, configured to calculate the unit exhaust superheat degree change rate per unit time of the heat pump in the exhaust cycle based on the actual exhaust superheat degree deviation;

[0116] A future parameter adjustment module 205, configured to adjust the regulating valve cycle and proportional parameters of the auxiliary electronic expansion valve of the heat pump according to the actual exhaust superheat degree deviation, the target exhaust superheat degree and the unit exhaust superheat degree change rate under the condition of predicting the future exhaust superheat degree of the heat pump;

[0117] The auxiliary valve adjustment module 206 is used to adjust the auxiliary electronic expansion valve of the heat pump within the current valve adjustment period according to the proportional parameter, the valve adjustment period, the actual exhaust superheat deviation and the unit exhaust superheat change rate.

[0118] In an embodiment of the present invention, the unit exhaust superheat change rate calculation module 204 includes:

[0119] The exhaust superheat change rate calculation module is used to subtract the actual exhaust superheat in the current exhaust period from the actual exhaust superheat in the previous exhaust period to obtain the exhaust superheat change rate;

[0120] The ratio calculation module is used to calculate the ratio between the exhaust superheat change rate and the exhaust period as the unit exhaust superheat change rate.

[0121] In an embodiment of the present invention, the future parameter adjustment module 205 includes:

[0122] The estimated exhaust superheat calculation module is used to calculate the estimated exhaust superheat of the heat pump after multiple future valve adjustment periods according to the unit exhaust superheat change rate;

[0123] The estimated exhaust superheat deviation calculation module is used to take the absolute value of the difference between the estimated exhaust superheat and the target exhaust superheat to obtain the estimated exhaust superheat deviation;

[0124] The limit adjustment module is used to adjust the valve adjustment period of the auxiliary electronic expansion valve of the heat pump to the upper limit value and adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump to the lower limit value if the estimated exhaust superheat deviation is less than or equal to a preset steady state value;

[0125] The valve adjustment period adjustment module is used to adjust the valve adjustment period of the auxiliary electronic expansion valve of the heat pump within the range below the upper limit value according to the actual exhaust superheat deviation, the target exhaust superheat and the unit exhaust superheat change rate if the estimated exhaust superheat deviation is greater than the preset steady state value;

[0126] The proportional parameter adjustment module is used to adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump within the range above the lower limit value according to the actual exhaust superheat deviation; the proportional parameter is negatively correlated with the absolute value of the actual exhaust superheat deviation.

[0127] In an embodiment of the present invention, the estimated exhaust superheat calculation module includes:

[0128] The period query module is used to query the current valve adjustment period of the auxiliary electronic expansion valve of the heat pump;

[0129] A cycle calculation module, configured to add the product of the current valve adjustment cycle, the unit exhaust superheat change rate, and a preset number of cycles to the current actual exhaust superheat, so as to obtain the estimated exhaust superheat of the heat pump after a plurality of future valve adjustment cycles.

[0130] In an embodiment of the present invention, the valve adjustment cycle adjustment module includes:

[0131] A target exhaust temperature change rate setting module, configured to set a target exhaust temperature change rate for the heat pump according to the actual exhaust superheat deviation; the target exhaust temperature change rate is negatively correlated with the actual exhaust superheat deviation;

[0132] A cycle value query module, configured to query a first cycle value, a second cycle value, and a third cycle value for setting the valve adjustment cycle of the auxiliary electronic expansion valve of the heat pump within a range below the upper limit value; the first cycle value is less than the second cycle value, and the second cycle value is less than the third cycle value;

[0133] A superheat change rate deviation calculation module, configured to take the absolute value of the difference between the unit exhaust superheat change rate and the target exhaust temperature change rate to obtain a superheat change rate deviation;

[0134] A first cycle value setting module, configured to adjust the valve adjustment cycle of the auxiliary electronic expansion valve of the heat pump to the first cycle value if the superheat change rate deviation is less than or equal to a preset change deviation;

[0135] A second cycle value setting module, configured to adjust the valve adjustment cycle of the auxiliary electronic expansion valve of the heat pump to the second cycle value if the unit exhaust superheat change rate is less than the difference between the target exhaust temperature change rate and the preset change deviation;

[0136] A third cycle value setting module, configured to adjust the valve adjustment cycle of the auxiliary electronic expansion valve of the heat pump to the third cycle value if the unit exhaust superheat change rate is greater than the sum value of the target exhaust temperature change rate and the preset change deviation.

[0137] In an embodiment of the present invention, the target exhaust temperature change rate setting module includes:

[0138] A superheat change deviation threshold query module, configured to query a first superheat change deviation threshold and a second superheat change deviation threshold for setting the actual exhaust superheat deviation and applicable to adjusting the valve adjustment cycle of the auxiliary electronic expansion valve of the heat pump; the first superheat change deviation threshold is less than the second superheat change deviation threshold;

[0139] A rate-of-change query module for querying a first rate of change, a second rate of change, and a third rate of change set for a target exhaust gas temperature change rate of the heat pump; the first rate of change is less than the second rate of change, and the second rate of change is less than the third rate of change;

[0140] A first rate value setting module for setting the target exhaust gas temperature change rate of the heat pump to the third rate of change if the actual superheat degree deviation of the exhaust gas is less than the negative of the second superheat degree change deviation threshold;

[0141] A second rate value setting module for setting the target exhaust gas temperature change rate of the heat pump to the second rate of change if the actual superheat degree deviation of the exhaust gas is greater than or equal to the negative of the second superheat degree change deviation threshold and less than the negative of the first superheat degree change deviation threshold;

[0142] A third rate value setting module for setting the target exhaust gas temperature change rate of the heat pump to the first rate of change if the actual superheat degree deviation of the exhaust gas is greater than or equal to the negative of the first superheat degree change deviation threshold and less than the first superheat degree change deviation threshold;

[0143] A fourth rate value setting module for setting the target exhaust gas temperature change rate of the heat pump to the negative of the second rate of change if the actual superheat degree deviation of the exhaust gas is greater than or equal to the first superheat degree change deviation threshold and less than or equal to the second superheat degree change deviation threshold;

[0144] A fifth rate value setting module for setting the target exhaust gas temperature change rate of the heat pump to the negative of the third rate of change if the actual superheat degree deviation of the exhaust gas is greater than the second superheat degree change deviation threshold.

[0145] In an embodiment of the present invention, the proportional parameter adjustment module includes:

[0146] A superheat degree proportional deviation threshold query module for querying a first superheat degree proportional deviation threshold and a second superheat degree proportional deviation threshold set for the actual superheat degree deviation of the exhaust gas and applicable to adjusting the proportional parameter of the auxiliary electronic expansion valve of the heat pump; the first superheat degree proportional deviation threshold is less than the second superheat degree proportional deviation threshold;

[0147] A proportional value query module for querying a first proportional value, a second proportional value, and a third proportional value set for the proportional parameter of the auxiliary electronic expansion valve of the heat pump within a range above the lower limit; the first proportional value is less than the second proportional value, and the second proportional value is less than the third proportional value;

[0148] The first ratio setting module is configured to adjust the ratio parameter of the auxiliary electronic expansion valve of the heat pump to the third ratio value if the actual exhaust superheat deviation is less than the opposite of the second superheat ratio deviation threshold;

[0149] The second ratio setting module is configured to adjust the ratio parameter of the auxiliary electronic expansion valve of the heat pump to the second ratio value if the actual exhaust superheat deviation is greater than or equal to the opposite of the second superheat ratio deviation threshold and less than the opposite of the first superheat ratio deviation threshold;

[0150] The third ratio setting module is configured to adjust the ratio parameter of the auxiliary electronic expansion valve of the heat pump to the first ratio value if the actual exhaust superheat deviation is greater than or equal to the opposite of the first superheat ratio deviation threshold and less than or equal to the first superheat ratio deviation threshold;

[0151] The fourth ratio setting module is configured to adjust the ratio parameter of the auxiliary electronic expansion valve of the heat pump to the second ratio value if the actual exhaust superheat deviation is greater than or equal to the first superheat ratio deviation threshold and less than or equal to the second superheat ratio deviation threshold;

[0152] The fifth ratio setting module is configured to adjust the ratio parameter of the auxiliary electronic expansion valve of the heat pump to the third ratio value if the actual exhaust superheat deviation is greater than the second superheat ratio deviation threshold.

[0153] In an embodiment of the present invention, the auxiliary valve adjustment module 206 includes:

[0154] The step calculation module is configured to input the ratio parameter, the valve adjustment period, the actual exhaust superheat deviation, and the unit exhaust superheat change rate into a proportional integral derivative function set for the auxiliary electronic expansion valve of the heat pump for operation to obtain the number of adjustment steps within the current valve adjustment period;

[0155] The step adjustment module is configured to adjust the auxiliary electronic expansion valve of the heat pump according to the number of adjustment steps.

[0156] The auxiliary valve control device of the heat pump provided by the embodiment of the present invention can execute the auxiliary valve control method of the heat pump provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the auxiliary valve control method of the heat pump.

[0157] Embodiment III

[0158] See Figure 3, which shows a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, blade servers, mainframe computers, and other suitable computers. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0159] like Figure 3 As shown, electronic device 10 includes at least one processor 11 and memory, such as read-only memory (ROM) 12 and random access memory (RAM) 13, communicatively connected to at least one processor 11. The memory stores computer programs executable by the at least one processor. Processor 11 can perform various appropriate actions and processes based on the computer programs stored in ROM 12 or loaded from storage unit 18 into RAM 13. RAM 13 can also store various programs and data required for the operation of electronic device 10. Processor 11, ROM 12, and RAM 13 are interconnected via bus 14. An input / output (I / O) interface 15 is also connected to bus 14.

[0160] Multiple components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0161] The processor 11 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any other suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the auxiliary valve control method for a heat pump.

[0162] In some embodiments, the auxiliary valve control method of the heat pump can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the auxiliary valve control method of the heat pump described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the auxiliary valve control method of the heat pump by any other suitable means (e.g., by means of firmware).

[0163] The various embodiments of the systems and techniques described above in this document can be implemented in digital electronic circuitry, integrated circuit systems, field-programmable gate arrays (FPGA), application-specific integrated circuits (ASIC), application-specific standard products (ASSP), systems-on-a-chip (SOC), complex programmable logic devices (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from a storage system, at least one input device, and at least one output device, and transmits the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0164] The computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, such that when the computer programs are executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer programs can be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0165] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0166] In order to provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0167] The systems and techniques described herein can be implemented in a computing system including backend components (e.g., as a data server), or a computing system including middleware components (e.g., an application server), or a computing system including frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system including any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0168] Embodiment 4

[0169] The embodiment of the present invention also provides a computer program product, which includes a computer program that, when executed by a processor, implements the auxiliary valve control method of a heat pump provided in any embodiment of the present invention.

[0170] In the process of implementing the computer program product, computer program code for performing the operations of the present invention can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any kind of network - including a local area network (LAN) or a wide area network (WAN) - or, alternatively, can be connected to an external computer (e.g., by using an Internet service provider to connect through the Internet).

[0171] It should be understood that the various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is imposed herein.

[0172] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A control method for an auxiliary valve of a heat pump, characterized in that, Including: Set a target discharge superheat degree for the heat pump; Collect the actual discharge superheat degree of the heat pump during multiple discharge cycles; Calculate the difference between the target discharge superheat degree and the actual discharge superheat degree to obtain the actual discharge superheat degree deviation; Calculate the unit discharge superheat degree change rate per unit time of the heat pump during the discharge cycle according to the actual discharge superheat degree deviation; Adjust the regulating valve cycle and proportional parameter of the auxiliary electronic expansion valve of the heat pump under the condition of predicting the future discharge superheat degree of the heat pump according to the actual discharge superheat degree deviation, the target discharge superheat degree and the unit discharge superheat degree change rate; Adjust the auxiliary electronic expansion valve of the heat pump within the current regulating valve cycle according to the proportional parameter, the regulating valve cycle, the actual discharge superheat degree deviation and the unit discharge superheat degree change rate.

2. The method according to claim 1, characterized in that, The calculating the unit discharge superheat degree change rate per unit time of the heat pump during the discharge cycle according to the actual discharge superheat degree deviation includes: Subtract the actual discharge superheat degree in the previous discharge cycle from the actual discharge superheat degree in the current discharge cycle to obtain the discharge superheat degree change rate; Calculate the ratio between the discharge superheat degree change rate and the discharge cycle as the unit discharge superheat degree change rate.

3. The method according to claim 1, wherein The adjusting the regulating valve cycle and proportional parameter of the auxiliary electronic expansion valve of the heat pump under the condition of predicting the future discharge superheat degree of the heat pump according to the actual discharge superheat degree deviation, the target discharge superheat degree and the unit discharge superheat degree change rate includes: Calculate the estimated discharge superheat degree of the heat pump after multiple future regulating valve cycles according to the unit discharge superheat degree change rate; Take the absolute value of the difference between the estimated discharge superheat degree and the target discharge superheat degree to obtain the estimated discharge superheat degree deviation; If the estimated discharge superheat degree deviation is less than or equal to a preset steady state value, adjust the regulating valve cycle of the auxiliary electronic expansion valve of the heat pump to the upper limit value and adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump to the lower limit value; If the estimated discharge superheat degree deviation is greater than the preset steady state value, adjust the regulating valve cycle of the auxiliary electronic expansion valve of the heat pump within the range below the upper limit value according to the actual discharge superheat degree deviation, the target discharge superheat degree and the unit discharge superheat degree change rate; Adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump within the range above the lower limit value according to the actual discharge superheat degree deviation; the proportional parameter is negatively correlated with the absolute value of the actual discharge superheat degree deviation.

4. The method according to claim 3, characterized in that, The calculating the estimated discharge superheat degree of the heat pump after multiple future regulating valve cycles according to the unit discharge superheat degree change rate includes: Query the current regulating valve cycle of the auxiliary electronic expansion valve of the heat pump; Add the product of the current regulating valve cycle, the unit discharge superheat degree change rate and a preset number of cycles to the current actual discharge superheat degree to obtain the estimated discharge superheat degree of the heat pump after multiple future regulating valve cycles.

5. The method according to claim 3, characterized in that Adjusting the regulating valve period of the auxiliary electronic expansion valve of the heat pump within the range below the upper limit according to the actual exhaust superheat deviation, the target exhaust superheat, and the unit exhaust superheat change rate, includes: Setting a target exhaust temperature change rate for the heat pump according to the actual exhaust superheat deviation; the target exhaust temperature change rate is negatively correlated with the actual exhaust superheat deviation; Querying the first period value, the second period value, and the third period value set for the regulating valve period of the auxiliary electronic expansion valve of the heat pump within the range below the upper limit; the first period value is less than the second period value, and the second period value is less than the third period value; Taking the absolute value of the difference between the unit exhaust superheat change rate and the target exhaust temperature change rate to obtain the superheat change rate deviation; If the superheat change rate deviation is less than or equal to a preset change deviation, adjusting the regulating valve period of the auxiliary electronic expansion valve of the heat pump to the first period value; If the unit exhaust superheat change rate is less than the difference between the target exhaust temperature change rate and the preset change deviation, adjusting the regulating valve period of the auxiliary electronic expansion valve of the heat pump to the second period value; If the unit exhaust superheat change rate is greater than the sum of the target exhaust temperature change rate and the preset change deviation, adjusting the regulating valve period of the auxiliary electronic expansion valve of the heat pump to the third period value.

6. The method according to claim 5, characterized in that The setting of the target exhaust temperature change rate for the heat pump according to the actual exhaust superheat deviation includes: Querying the first superheat change deviation threshold and the second superheat change deviation threshold set for the actual exhaust superheat deviation and applicable to adjusting the regulating valve period of the auxiliary electronic expansion valve of the heat pump; the first superheat change deviation threshold is less than the second superheat change deviation threshold; Querying the first change rate, the second change rate, and the third change rate set for the target exhaust temperature change rate of the heat pump; the first change rate is less than the second change rate, and the second change rate is less than the third change rate; If the actual exhaust superheat deviation is less than the opposite of the second superheat change deviation threshold, setting the target exhaust temperature change rate of the heat pump to the third change rate; If the actual exhaust superheat deviation is greater than or equal to the opposite of the second superheat change deviation threshold and less than the opposite of the first superheat change deviation threshold, setting the target exhaust temperature change rate of the heat pump to the second change rate; If the actual exhaust superheat deviation is greater than or equal to the opposite of the first superheat change deviation threshold and less than the first superheat change deviation threshold, setting the target exhaust temperature change rate of the heat pump to the first change rate; If the actual exhaust superheat deviation is greater than or equal to the first superheat change deviation threshold and less than or equal to the second superheat change deviation threshold, setting the target exhaust temperature change rate of the heat pump to the opposite of the second change rate; If the actual exhaust superheat deviation is greater than the second superheat change deviation threshold, set the target exhaust temperature change rate of the heat pump to the opposite of the third change rate.

7. The method according to claim 3, wherein Adjusting the proportional parameter of the auxiliary electronic expansion valve of the heat pump within the range above the lower limit according to the actual exhaust superheat deviation includes: Querying the first superheat proportional deviation threshold and the second superheat proportional deviation threshold for the proportional parameter set for the actual exhaust superheat deviation and applicable to adjusting the auxiliary electronic expansion valve of the heat pump; the first superheat proportional deviation threshold is less than the second superheat proportional deviation threshold; Querying the first proportional value, the second proportional value, and the third proportional value set for the proportional parameter of the auxiliary electronic expansion valve of the heat pump within the range above the lower limit; the first proportional value is less than the second proportional value, and the second proportional value is less than the third proportional value; If the actual exhaust superheat deviation is less than the opposite of the second superheat proportional deviation threshold, adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump to the third proportional value; If the actual exhaust superheat deviation is greater than or equal to the opposite of the second superheat proportional deviation threshold and less than the opposite of the first superheat proportional deviation threshold, adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump to the second proportional value; If the actual exhaust superheat deviation is greater than or equal to the opposite of the first superheat proportional deviation threshold and less than or equal to the first superheat proportional deviation threshold, adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump to the first proportional value; If the actual exhaust superheat deviation is greater than or equal to the first superheat proportional deviation threshold and less than or equal to the second superheat proportional deviation threshold, adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump to the second proportional value; If the actual exhaust superheat deviation is greater than the second superheat proportional deviation threshold, adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump to the third proportional value.

8. The method according to any one of claims 1 to 7, characterized in that, Adjusting the auxiliary electronic expansion valve of the heat pump within the current valve adjustment period according to the proportional parameter, the valve adjustment period, the actual exhaust superheat deviation, and the unit exhaust superheat change rate includes: Inputting the proportional parameter, the valve adjustment period, the actual exhaust superheat deviation, and the unit exhaust superheat change rate into the proportional integral differential function set for the auxiliary electronic expansion valve of the heat pump for calculation to obtain the adjustment steps within the current valve adjustment period; Adjust the auxiliary electronic expansion valve of the heat pump according to the adjustment steps.

9. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the auxiliary valve control method of the heat pump according to any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the auxiliary valve control method of the heat pump according to any one of claims 1-8.

Images