A heat pump auxiliary valve control method, device and storage medium

Abstract

The present invention discloses a heat pump auxiliary valve control method, device, and storage medium. The method includes: setting a target exhaust superheat for the heat pump; collecting actual exhaust superheat from the heat pump during multiple exhaust cycles; calculating the difference between the target exhaust superheat and the actual exhaust superheat to obtain an actual exhaust superheat deviation; calculating the rate of change of unit exhaust superheat per unit time of the heat pump during the exhaust cycle based on the actual exhaust superheat deviation; adjusting the valve regulation cycle and proportional parameter of the heat pump's auxiliary electronic expansion valve based on the actual exhaust superheat deviation, the target exhaust superheat, and the rate of change of unit exhaust superheat under the condition of predicting the future exhaust superheat of the heat pump; and adjusting the heat pump's auxiliary electronic expansion valve within the current valve regulation cycle based on the proportional parameter, the valve regulation cycle, the actual exhaust superheat deviation, and the rate of change of unit exhaust superheat. The method effectively improves response speed and regulation accuracy, allowing the heat pump's exhaust superheat to quickly reach the set state.

Description

Technical Field

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

[0002] The heat pump is provided with an auxiliary electronic expansion valve (auxiliary valve for short) to accurately control the flow of refrigerant. By reasonably adjusting the opening of the auxiliary valve, the refrigerant flow in the evaporator of the heat pump can be matched with the heat load.

[0003] At present, the auxiliary valve is mainly controlled by PID (proportional-integral-differential) method based on the exhaust superheat of the heat pump. However, the exhaust superheat has a certain lag and one-sidedness in reflecting the status of the heat pump. Therefore, the auxiliary valve controlled based on the exhaust superheat of the heat pump has a slow response speed and is prone to over-adjustment, resulting in performance fluctuations and poor adaptability of the heat pump, causing liquid shock and low energy efficiency in the compressor of the heat pump, which can easily put the heat pump in a dangerous state of abnormal control. Summary of the Invention

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

[0005] A first aspect of the present invention provides a heat pump auxiliary valve control method, comprising:

[0006] Set target exhaust superheat for the heat pump;

[0007] collecting actual exhaust superheat of the heat pump during multiple exhaust cycles;

[0008] calculating a difference between the target exhaust superheat and the actual exhaust superheat to obtain an actual exhaust superheat deviation;

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

[0010] adjusting a valve regulating cycle and a proportional parameter of an auxiliary electronic expansion valve of the heat pump based on 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] The auxiliary electronic expansion valve of the heat pump is adjusted within the current valve regulation cycle according to the proportional parameter, the valve regulation cycle, the actual exhaust superheat deviation and the unit exhaust superheat change rate.

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

[0013] A target exhaust superheat setting module is used to set a target exhaust superheat for the heat pump;

[0014] an actual exhaust superheat acquisition module, configured to acquire actual exhaust superheat from the heat pump during multiple exhaust cycles;

[0015] an actual exhaust superheat deviation calculation module, configured to calculate a difference between the target exhaust superheat and the actual exhaust superheat to obtain an actual exhaust superheat deviation;

[0016] a unit exhaust superheat change rate calculation module, configured to calculate the unit exhaust superheat change rate of the heat pump per unit time in the exhaust cycle according to the actual exhaust superheat deviation;

[0017] a future parameter adjustment module, configured to adjust a valve adjustment period and a proportional parameter of an auxiliary electronic expansion valve of the heat pump based on 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;

[0018] The auxiliary valve regulating module is used to regulate the auxiliary electronic expansion valve of the heat pump within the current valve regulating cycle according to the proportional parameter, the valve regulating cycle, the actual exhaust superheat deviation and the unit exhaust superheat change rate.

[0019] A third aspect of the present invention provides an electronic device, comprising:

[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 that can be executed by the at least one processor. 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] A fourth aspect of the present invention provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the auxiliary valve control method of the heat pump as described in the first aspect is implemented.

[0024] A fifth aspect of the present invention provides a computer program product, which includes a computer program. 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 exhaust superheat is set for the heat pump; the actual exhaust superheat is collected from the heat pump in multiple exhaust cycles; the difference between the target exhaust superheat and the actual exhaust superheat is calculated to obtain the actual exhaust superheat deviation; the unit exhaust superheat change rate of the heat pump per unit time in the exhaust cycle is calculated based on the actual exhaust superheat deviation; the valve regulating cycle and proportional parameters of the auxiliary electronic expansion valve of the heat pump are adjusted under the condition of predicting the future exhaust superheat of the heat pump based on the actual exhaust superheat deviation, the target exhaust superheat and the unit exhaust superheat change rate; the auxiliary electronic expansion valve of the heat pump is adjusted within the current valve regulating cycle based on the proportional parameter, the valve regulating cycle, the actual exhaust superheat deviation and the unit exhaust superheat change rate. This embodiment predicts the future state of the heat pump and intervenes in the regulation and control of the auxiliary electronic expansion valve of the heat pump in advance, which effectively improves the response speed. In addition, the auxiliary electronic expansion valve of the heat pump is adjusted according to a variety of different operating parameters to improve the accuracy of the regulation, so that the exhaust superheat of the heat pump quickly reaches the set state, and the heat pump is quickly adaptively adjusted to ensure the stable performance of the heat pump, so that the heat pump is in an efficient and reliable state.

[0026] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily 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 following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a flow chart of a heat pump auxiliary valve control method provided in Example 1 of the present invention.

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

[0030] Figure 3 This is a structural diagram of an electronic device provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solutions 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 drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can cover sequential implementations other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Example 1

[0034] See also Figure 1 , shows a flow chart of a heat pump auxiliary valve control method provided by the first embodiment of the present invention. The method can be executed by a heat pump auxiliary valve control device. The heat pump auxiliary valve control device can be implemented in the form of hardware and / or software. The heat pump auxiliary valve control device can be configured in an electronic device. Figure 1 As shown, the method includes:

[0035] Step 101: Set a target exhaust superheat for the heat pump.

[0036] In this embodiment, the operating parameters such as the ambient temperature of the environment in which the heat pump is located and the outlet water temperature of the heat pump can be queried. Based on these operating parameters, the exhaust superheat as the adjustment target of the heat pump is set in accordance with the thermodynamic principles and relevant configuration parameters in the heat pump, and is recorded as the target exhaust superheat TESH.

[0037] For example, when the ambient temperature is low, the evaporation temperature of the heat pump will also decrease accordingly. In order to prevent frost on the evaporator and ensure the safe operation of the compressor, the target exhaust superheat TESH should be appropriately increased. When the ambient temperature is high, the evaporation temperature is relatively high and the evaporation rate of the refrigerant is accelerated. In this case, the target exhaust superheat TESH can be appropriately reduced.

[0038] For example, when the outlet water temperature is low, the heat pump's cooling capacity demand is high, and the refrigerant's evaporation pressure in the evaporator is low. To ensure the evaporator's heat exchange efficiency and system stability, the target exhaust superheat (TESH) is increased to ensure sufficient evaporation of the refrigerant in the evaporator. When the outlet water temperature is high, the heat pump's heating capacity demand is low, and the refrigerant's evaporation pressure in the evaporator is relatively high. In this case, the target exhaust superheat (TESH) can be appropriately lowered to improve the heat pump's heating efficiency.

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

[0040] In this embodiment, multiple periods for collecting exhaust superheat of the heat pump can be set on the time axis, which are recorded as exhaust periods TE. During the multiple exhaust periods, the operating parameters of the compressor (such as the exhaust temperature of the compressor, the exhaust pressure of the compressor, etc.) can be collected in real time for the heat pump. The exhaust superheat of the heat pump is calculated based on these compressor operating parameters and recorded as 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 actual exhaust superheat CESH can be subtracted from the target exhaust superheat TESH 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 of the heat pump per unit time during the exhaust cycle based on the actual exhaust superheat deviation.

[0044] In this embodiment, the actual exhaust superheat deviation EDSH of each exhaust cycle TE can be arranged in chronological order to obtain a time series, and the actual exhaust superheat deviation EDSH in the time series can be statistically analyzed to obtain the exhaust superheat change per unit time of the heat pump in the exhaust cycle as the unit exhaust superheat change rate PSRCESH.

[0045] In a specific implementation, the actual exhaust superheat CESH of two adjacent exhaust cycles TE is extracted from the time series, and 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 : adjusting the valve cycle and proportional parameters of the auxiliary electronic expansion valve of the heat pump based on 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.

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

[0048] In one 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 a plurality of future valve adjustment cycles T based on 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 based on the unit exhaust superheat change rate PSRCESH, which is recorded as the estimated exhaust superheat EstESH.

[0051] The valve regulating cycle T is a cycle for regulating the auxiliary electronic expansion valve of the heat pump. In the process of controlling the heat pump, the valve regulating cycle T is an adjustable parameter.

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

[0053] During the non-initial period, the estimated exhaust gas superheat EstESH of the heat pump is predicted using the current valve regulation cycle T.

[0054] In a specific implementation, the current valve regulation cycle T of the auxiliary electronic expansion valve of the heat pump can be queried, and the product of the current valve regulation cycle T, the 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 regulation 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, the estimated exhaust superheat deviation = ABS(EstESH-TESH), where ABS is a function of taking the absolute value, so that the estimated exhaust superheat deviation represents the degree to which the estimated exhaust superheat EstESH of the heat pump after multiple valve adjustment cycles T in the future deviates from the target exhaust superheat TESH.

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

[0058] If the estimated exhaust superheat deviation is less than or equal to the preset steady-state value D2, it means that the estimated exhaust superheat EstESH of the heat pump after multiple auxiliary electronic expansion valve adjustment cycles T in the future deviates from the target exhaust superheat TESH to a small extent, and the estimated exhaust superheat EstESH of the heat pump after multiple auxiliary electronic expansion valve adjustment cycles T in the future fluctuates around the target exhaust superheat TESH. At this time, the valve adjustment cycle T of the auxiliary electronic expansion valve of the heat pump is adjusted to the upper limit value T3 within its adjustable range, and the proportional parameter P of the auxiliary electronic expansion valve of the heat pump is adjusted 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, the valve regulation cycle of the auxiliary electronic expansion valve of the heat pump is adjusted within a range below the upper limit value based on 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 estimated exhaust superheat EstESH of the heat pump after multiple valve regulation cycles T of the auxiliary electronic expansion valve in the future deviates from the target exhaust superheat TESH to a large extent. At this time, the auxiliary electronic expansion valve of the heat pump can be adjusted in the range below the upper limit value based on the actual exhaust superheat deviation EDSH, the target exhaust superheat TESH and the unit exhaust superheat change rate PSRCESH. That is, the adjusted valve regulation cycle T is less than the upper limit value T3.

[0061] In one 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 based on the actual exhaust superheat deviation.

[0063] In this embodiment, the exhaust temperature change rate as the adjustment target of the heat pump can be set according to the actual exhaust superheat deviation EDSH by using table lookup, function calculation, etc., which is recorded as the target exhaust temperature change rate TPSRCESH.

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

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

[0066] The first superheat change deviation threshold is smaller than the second superheat change deviation threshold.

[0067] The first superheat change deviation threshold and its inverse, and the second superheat change deviation threshold and its inverse can be divided into five sections.

[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 temperature change rate TPSRCESH of the heat pump may be queried.

[0069] The first change rate TPSRCESH0 is smaller than the second change rate TPSRCESH1 , and the second change rate TPSRCESH1 is smaller than the third change rate TPSRCESH2 .

[0070] If the actual exhaust superheat deviation EDSH is less than the inverse of the second superheat change deviation threshold, the target exhaust 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 superheat deviation EDSH is greater than or equal to the inverse of the second superheat change deviation threshold and less than the inverse of the first superheat change deviation threshold, the target exhaust 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 inverse of the first superheat change deviation threshold and less than the first superheat change deviation threshold, the target exhaust temperature change rate TPSRCESH of the heat pump is set to the first change rate TPSRCESH0, that is, 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, the target exhaust temperature change rate TPSRCESH of the heat pump is set to the opposite of the second change rate TPSRCESH1, that is, TPSRCESH=-TPSRCESH1.

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

[0075] Of course, the above-described method for setting the target exhaust temperature change rate TPSRCESH for the heat pump is merely illustrative. When implementing this embodiment, other methods for setting the target exhaust temperature change rate TPSRCESH for the heat pump may be employed based on practical needs. For example, multiple thresholds may be set for the actual exhaust superheat deviation EDSH, which is suitable for regulating the valve adjustment period T of the auxiliary electronic expansion valve of the heat pump, to divide the heat pump into more segments, or multiple values ​​may be set for the target exhaust temperature change rate TPSRCESH of the heat pump to map to more segments, and so on. This embodiment does not limit this. Furthermore, in addition to the above-described method for setting the target exhaust temperature change rate TPSRCESH for the heat pump, those skilled in the art may also employ other methods for setting the target exhaust temperature change rate TPSRCESH for the heat pump based on practical needs, and this embodiment does not limit this either.

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

[0077] The first cycle value T0, the second cycle value T1 and the third cycle value T2 set for the valve regulation cycle T of the auxiliary electronic expansion valve of the heat pump are queried within a range below the upper limit value.

[0078] The first period value T0 is smaller than the second period value T1, the second period value T1 is smaller than the third period value T2, and the third period value T2 is smaller 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, the valve regulation period of the auxiliary electronic expansion valve of the heat pump is adjusted to a 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 a function of the absolute value), indicating that the unit exhaust superheat change rate PSRCESH fluctuates around the target exhaust temperature change rate TPSRCESH, and the unit exhaust superheat change rate PSRCESH is of appropriate size, the valve regulation period T of the auxiliary electronic expansion valve of the heat pump is adjusted to the first period value T0, i.e., 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, the valve regulation period of the auxiliary electronic expansion valve of the heat pump is adjusted to a 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 the valve regulation period T of the auxiliary electronic expansion valve of the heat pump is adjusted to the second period value T1, i.e., T=T1.

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

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

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

[0088] Step 1055: Based on the actual exhaust superheat deviation, adjust the proportional parameter of the auxiliary electronic expansion valve of the heat pump within a range above the lower limit.

[0089] In this embodiment, the proportional parameter P of the auxiliary electronic expansion valve of the heat pump can be adjusted within a 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, and conversely, the smaller the absolute value of the actual exhaust superheat deviation EDSH, the larger the proportional parameter P.

[0091] In a 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, which are suitable for adjusting the proportional parameter P of the auxiliary electronic expansion valve of the heat pump, can be queried.

[0092] The first superheat ratio deviation threshold is smaller than the second superheat ratio deviation threshold.

[0093] The first superheat ratio deviation threshold value and its inverse number, and the second superheat ratio deviation threshold value and its inverse number can be divided into five sections.

[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 a range above the lower limit value P3.

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

[0096] If the actual exhaust superheat deviation EDSH is less than the inverse of the second superheat proportional deviation threshold, the proportional parameter P of the auxiliary electronic expansion valve of the heat pump is adjusted to a third proportional value P2, ie, P=P2.

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

[0098] If the actual exhaust superheat deviation EDSH is greater than or equal to the inverse of the first superheat proportional deviation threshold and less than or equal to the first superheat proportional deviation threshold, the proportional parameter P of the auxiliary electronic expansion valve of the heat pump is adjusted to the first proportional value P0, that is, P=P0.

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

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

[0101] Of course, the above-described method for adjusting the proportional parameter P is merely an example. When implementing this embodiment, other adjustment proportional parameters P may be set according to actual circumstances. For example, multiple thresholds may be set for the actual exhaust gas superheat deviation EDSH, for adjusting the proportional parameter P of the auxiliary electronic expansion valve of the heat pump, to divide the heat pump into more segments, or more values ​​may be set for the proportional parameter P 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-described adjustment proportional parameter P, those skilled in the art may also adopt other adjustment proportional parameters P according to actual needs, and this embodiment does not limit this.

[0102] Step 106 : Adjust 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.

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

[0104] In the specific implementation, the proportional parameter P, valve regulation period T, actual exhaust superheat deviation EDSH, and unit exhaust superheat change rate PSRCESH are input into the proportional-integral-differential function set for the auxiliary electronic expansion valve of the heat pump for calculation to obtain the regulation step number Step within the current valve regulation period T, that is, Step=EviPID(P,T, EDSH, PSRCESH), where EviPID is the proportional-integral-differential 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 adjustment step number Step. When the adjustment step number Step is a negative value, the opening of the auxiliary electronic expansion valve of the heat pump is reduced. When the adjustment step number Step is a positive value, the opening of the auxiliary electronic expansion valve of the heat pump is increased.

[0106] When the opening of the heat pump's auxiliary electronic expansion valve increases, more refrigerant will enter the evaporator, and the amount of refrigerant absorbing heat and evaporating in the evaporator will increase.

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

[0108] Properly adjusting the opening of the heat pump's auxiliary electronic expansion valve can match the refrigerant flow rate within the evaporator to the heat load. Under varying operating conditions, such as ambient temperature and indoor load, the auxiliary electronic expansion valve precisely controls the refrigerant flow rate, maintaining an appropriate superheat at the evaporator outlet. This prevents problems such as liquid carryover (too low a superheat) that can damage the compressor due to liquid shock, or excessive superheat that can lead to high compressor discharge temperatures and reduced system performance. This ensures that the heat pump system maintains optimal performance and efficiency under varying operating conditions, keeping the discharge superheat within a reasonable range and optimizing heat pump performance.

[0109] In this embodiment, a target exhaust superheat is set for the heat pump; the actual exhaust superheat is collected from the heat pump in multiple exhaust cycles; the difference between the target exhaust superheat and the actual exhaust superheat is calculated to obtain the actual exhaust superheat deviation; the unit exhaust superheat change rate of the heat pump per unit time in the exhaust cycle is calculated based on the actual exhaust superheat deviation; the valve regulating cycle and proportional parameters of the auxiliary electronic expansion valve of the heat pump are adjusted under the condition of predicting the future exhaust superheat of the heat pump based on the actual exhaust superheat deviation, the target exhaust superheat and the unit exhaust superheat change rate; the auxiliary electronic expansion valve of the heat pump is adjusted within the current valve regulating cycle based on the proportional parameter, the valve regulating cycle, the actual exhaust superheat deviation and the unit exhaust superheat change rate. This embodiment predicts the future state of the heat pump and intervenes in the regulation and control of the auxiliary electronic expansion valve of the heat pump in advance, which effectively improves the response speed. In addition, the auxiliary electronic expansion valve of the heat pump is adjusted according to a variety of different operating parameters to improve the accuracy of the regulation, so that the exhaust superheat of the heat pump quickly reaches the set state, and the heat pump is quickly adaptively adjusted to ensure the stable performance of the heat pump, so that the heat pump is in an efficient and reliable state.

[0110] Example 2

[0111] See also Figure 2 , shows a schematic structural diagram of an auxiliary valve control device for a heat pump provided by the second embodiment of the present invention. Figure 2 As shown, the device includes:

[0112] The target exhaust superheat setting module 201 is used to set the target exhaust superheat for the heat pump;

[0113] The actual exhaust superheat collecting module 202 is used to collect the actual exhaust superheat of the heat pump during multiple exhaust cycles;

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

[0115] a unit exhaust superheat change rate calculation module 204 for calculating the unit exhaust superheat change rate of the heat pump per unit time in the exhaust cycle according to the actual exhaust superheat deviation;

[0116] a future parameter adjustment module 205 for adjusting a valve adjustment period and a proportional parameter of an auxiliary electronic expansion valve of the heat pump based on 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;

[0117] The auxiliary valve regulating module 206 is configured to regulate the auxiliary electronic expansion valve of the heat pump within the current valve regulating cycle according to the proportional parameter, the valve regulating cycle, the actual exhaust superheat deviation and the unit exhaust superheat change rate.

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

[0119] an exhaust superheat change rate calculation module, configured to obtain an exhaust superheat change rate by subtracting the actual exhaust superheat in the previous exhaust cycle from the actual exhaust superheat in the current exhaust cycle;

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

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

[0122] an estimated exhaust superheat calculation module, configured to calculate an estimated exhaust superheat of the heat pump after a plurality of future valve adjustment cycles based on the unit exhaust superheat change rate;

[0123] an estimated exhaust superheat deviation calculation module, configured to obtain an estimated exhaust superheat deviation by taking an absolute value of a difference between the estimated exhaust superheat and the target exhaust superheat;

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

[0125] a valve regulation cycle adjustment module, configured to adjust the valve regulation cycle of the auxiliary electronic expansion valve of the heat pump within a range below an upper limit value based on 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 a preset steady-state value;

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

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

[0128] A cycle query module, used to query the current valve adjustment cycle of the auxiliary electronic expansion valve of the heat pump;

[0129] The cycle calculation module is used to add the product of the current valve adjustment cycle, the unit exhaust superheat change rate and the preset cycle number to the current actual exhaust superheat to obtain the estimated exhaust superheat of the heat pump after multiple future valve adjustment cycles.

[0130] In one embodiment of the present invention, the valve regulating 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; wherein 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 set for a valve regulation cycle of an auxiliary electronic expansion valve of the heat pump within a range below an upper limit value; the first cycle value is smaller than the second cycle value, and the second cycle value is smaller than the third cycle value;

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

[0134] a first cycle value setting module, configured to adjust the valve regulation period 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 regulation period 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 a preset change deviation;

[0136] The third cycle value setting module is used to adjust the valve regulation period 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 of the target exhaust temperature change rate and the preset change deviation.

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

[0138] a superheat variation deviation threshold query module, configured to query a first superheat variation deviation threshold and a second superheat variation deviation threshold, set for the actual exhaust gas superheat deviation and applicable to regulating a valve regulation cycle of an auxiliary electronic expansion valve of the heat pump; the first superheat variation deviation threshold being smaller than the second superheat variation deviation threshold;

[0139] a change rate query module, configured to query a first change rate, a second change rate, and a third change rate set for a target exhaust temperature change rate of the heat pump; the first change rate is smaller than the second change rate, and the second change rate is smaller than the third change rate;

[0140] a first rate value setting module, configured to set the target exhaust temperature change rate of the heat pump to the third change rate if the actual exhaust superheat deviation is less than the inverse of the second superheat change deviation threshold;

[0141] a second rate value setting module, configured to set 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 inverse of the second superheat change deviation threshold and less than the inverse of the first superheat change deviation threshold;

[0142] a third rate value setting module, configured to set 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 inverse of the first superheat change deviation threshold and less than the first superheat change deviation threshold;

[0143] a fourth rate value setting module, configured to set the target exhaust temperature change rate of the heat pump to the inverse of the second 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;

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

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

[0146] a superheat proportional deviation threshold query module, configured to query a first superheat proportional deviation threshold and a second superheat proportional deviation threshold, set for the actual exhaust gas superheat deviation and applicable to adjusting a proportional parameter of an auxiliary electronic expansion valve of the heat pump; the first superheat proportional deviation threshold being smaller than the second superheat proportional deviation threshold;

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

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

[0149] a second ratio setting module, configured to adjust a ratio parameter of an 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 inverse of the second superheat ratio deviation threshold value and less than the inverse of the first superheat ratio deviation threshold value;

[0150] a third ratio setting module, configured to adjust a ratio parameter of an 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 inverse of the first superheat ratio deviation threshold and less than or equal to the first superheat ratio deviation threshold;

[0151] a fourth ratio setting module, configured to adjust a ratio parameter of an 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] A 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 one embodiment of the present invention, the auxiliary valve adjustment module 206 includes:

[0154] a step length calculation module, configured to input the proportional parameter, the valve regulation period, the actual exhaust superheat deviation, and the unit exhaust superheat change rate into a proportional-integral-differential function set for the auxiliary electronic expansion valve of the heat pump, and perform calculation to obtain the number of regulation steps within the current valve regulation period;

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

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

[0157] Example 3

[0158] See also 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 for a heat pump can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on 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 for a heat pump described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to execute the auxiliary valve control method for a heat pump by any other suitable means (e.g., via firmware).

[0163] Various embodiments of the systems and techniques described above can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0164] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may 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 may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or apparatus. A computer-readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or apparatus, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media may 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0166] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device that has: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types 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 that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end 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] Example 4

[0169] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the auxiliary valve control method of the heat pump provided in any embodiment of the present invention is implemented.

[0170] During implementation, the computer program product may be written in one or more programming languages, or a combination thereof, to implement the computer program code for performing the operations of the present invention. The programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone 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 may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0171] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed 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. This is not limited herein.

[0172] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A heat pump auxiliary valve control method, characterized in that: include: Set target exhaust superheat for the heat pump; collecting actual exhaust superheat of the heat pump during multiple exhaust cycles; calculating a difference between the target exhaust superheat and the actual exhaust superheat to obtain an actual exhaust superheat deviation; Calculating a unit exhaust superheat change rate of the heat pump per unit time in the exhaust cycle according to the actual exhaust superheat deviation; Calculating an estimated exhaust superheat of the heat pump after a plurality of future valve adjustment cycles based on the unit exhaust superheat change rate; taking an absolute value of a difference between the estimated exhaust superheat and the target exhaust superheat to obtain an estimated exhaust superheat deviation; If the estimated exhaust superheat deviation is less than or equal to a preset steady-state value, adjusting the valve regulation period of the auxiliary electronic expansion valve of the heat pump to an upper limit value, and adjusting the proportional parameter of the auxiliary electronic expansion valve of the heat pump to a lower limit value; If the estimated exhaust superheat deviation is greater than a preset steady-state value, adjusting a valve regulation cycle of an auxiliary electronic expansion valve of the heat pump within a range below an upper limit value based on the actual exhaust superheat deviation, the target exhaust superheat, and the unit exhaust superheat change rate; According to the actual exhaust superheat deviation, adjusting a proportional parameter of the auxiliary electronic expansion valve of the heat pump within a range above a lower limit; the proportional parameter is negatively correlated with the absolute value of the actual exhaust superheat deviation; The auxiliary electronic expansion valve of the heat pump is adjusted within the current valve regulation cycle according to the proportional parameter, the valve regulation cycle, the actual exhaust superheat deviation and the unit exhaust superheat change rate.

2. The method according to claim 1, characterized in that The calculating the unit exhaust superheat change rate of the heat pump per unit time in the exhaust cycle according to the actual exhaust superheat deviation includes: Subtracting the actual exhaust superheat degree in the previous exhaust cycle from the actual exhaust superheat degree in the current exhaust cycle to obtain an exhaust superheat degree change rate; The ratio of the exhaust superheat change rate to the exhaust period is calculated as the unit exhaust superheat change rate.

3. The method according to claim 1, characterized in that Calculating the estimated exhaust superheat of the heat pump after a plurality of future valve adjustment cycles based on the unit exhaust superheat change rate includes: querying the current valve regulation cycle of the auxiliary electronic expansion valve of the heat pump; The product of the current valve regulation cycle, the unit exhaust superheat change rate and the preset number of cycles is added to the current actual exhaust superheat to obtain the estimated exhaust superheat of the heat pump after multiple future valve regulation cycles.

4. The method according to claim 1, wherein The adjusting the valve regulating cycle of the auxiliary electronic expansion valve of the heat pump within a range below an upper limit value based on 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; wherein the target exhaust temperature change rate is negatively correlated with the actual exhaust superheat deviation; querying, within a range below an upper limit, a first cycle value, a second cycle value, and a third cycle value set for a valve regulation cycle of an auxiliary electronic expansion valve of the heat pump; the first cycle value is smaller than the second cycle value, and the second cycle value is smaller than the third cycle value; Taking 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; If the superheat change rate deviation is less than or equal to the preset change deviation, adjusting the valve regulation 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 a preset change deviation, adjusting the valve regulation 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 a preset change deviation, the valve regulation period of the auxiliary electronic expansion valve of the heat pump is adjusted to the third period value.

5. The method according to claim 4, characterized in that The step of setting a target exhaust temperature change rate for the heat pump according to the actual exhaust superheat deviation includes: querying a first superheat variation deviation threshold and a second superheat variation deviation threshold set for the actual exhaust gas superheat deviation, which are applicable to regulating a valve regulation period of an auxiliary electronic expansion valve of the heat pump; the first superheat variation deviation threshold is smaller than the second superheat variation deviation threshold; querying a first change rate, a second change rate, and a third change rate set for a target exhaust temperature change rate of the heat pump; the first change rate is smaller than the second change rate, and the second change rate is smaller than the third change rate; If the actual exhaust gas superheat deviation is less than the inverse of the second superheat change deviation threshold, setting the target exhaust gas temperature change rate of the heat pump to the third change rate; If the actual exhaust gas superheat deviation is greater than or equal to the inverse of the second superheat variation deviation threshold and less than the inverse of the first superheat variation deviation threshold, setting the target exhaust gas temperature change rate of the heat pump to the second change rate; If the actual exhaust gas superheat deviation is greater than or equal to the inverse of the first superheat variation deviation threshold and less than the first superheat variation deviation threshold, setting the target exhaust gas temperature variation rate of the heat pump to the first variation rate; If the actual exhaust gas 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 gas temperature change rate of the heat pump to the inverse of the second change rate; If the actual exhaust gas superheat deviation is greater than the second superheat change deviation threshold, the target exhaust gas temperature change rate of the heat pump is set to the inverse of the third change rate.

6. The method according to claim 1, characterized in that The adjusting the proportional parameter of the auxiliary electronic expansion valve of the heat pump within a range above a lower limit value based on the actual exhaust superheat deviation includes: querying a first superheat proportional deviation threshold and a second superheat proportional deviation threshold set for the actual exhaust gas superheat deviation and applicable to adjusting a proportional parameter of an auxiliary electronic expansion valve of the heat pump; the first superheat proportional deviation threshold is smaller than the second superheat proportional deviation threshold; querying, within a range above a lower limit, a first proportional value, a second proportional value, and a third proportional value set for a proportional parameter of an auxiliary electronic expansion valve of the heat pump; the first proportional value is smaller than the second proportional value, and the second proportional value is smaller than the third proportional value; If the actual exhaust superheat deviation is less than the inverse of the second superheat proportional deviation threshold, adjusting 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 inverse of the second superheat proportional deviation threshold and less than the inverse of the first superheat proportional deviation threshold, adjusting 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 inverse of the first superheat proportional deviation threshold and less than or equal to the first superheat proportional deviation threshold, adjusting 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, adjusting 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, the proportional parameter of the auxiliary electronic expansion valve of the heat pump is adjusted to the third proportional value.

7. The method according to any one of claims 1 to 6, characterized in that The method of 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 includes: The proportional parameter, the valve regulating cycle, the actual exhaust superheat deviation, and the unit exhaust superheat change rate are input into a proportional-integral-differential function set for the auxiliary electronic expansion valve of the heat pump to perform calculations to obtain the number of regulation steps within the current valve regulating cycle; The auxiliary electronic expansion valve of the heat pump is adjusted according to the adjustment steps.

8. An electronic device, characterized in that: The electronic device comprises: 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. The computer program is executed by the at least one processor so as to enable the at least one processor to perform the auxiliary valve control method for a heat pump according to any one of claims 1 to 7.

9. 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, the auxiliary valve control method of the heat pump according to any one of claims 1 to 7 is implemented.

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