Water flow control method and device, electronic equipment and computer storage medium

Abstract

The application relates to the technical field of combined supply, and discloses a water flow control method and device, electronic equipment and computer storage medium, the method comprises the following steps: when an air conditioner water tank and a domestic water tank are in a state of outputting hot water, acquiring a water flow ratio corresponding to a domestic water flow path communicated with the domestic water tank; acquiring a temperature change range of hot water in the domestic water tank within a preset time length; according to the temperature change range and the preset time length, acquiring a first use time length of the hot water in the domestic water tank reaching a preset temperature threshold; according to the first use time length and a second use time length of the hot water in the domestic water tank, adjusting the water flow ratio to obtain a corrected water flow distribution ratio; and according to the corrected water flow distribution ratio, controlling the water flow of the domestic water flow path. The application can reasonably distribute heating capacity, ensures sufficient domestic hot water and takes into account room heating, thereby improving comfort.

Description

Technical Field

[0001] This application relates to the field of combined heat and power technology, specifically to a water flow control method, device, electronic equipment, and computer storage medium. Background Technology

[0002] Tri-generation units can provide cooling, heating, and domestic hot water to meet different usage needs. When users have both room heating and domestic hot water needs at the same time, the existing control scheme can only provide room heating or domestic hot water at the same time and switches according to the operating time. It cannot meet the needs at the same time, and there will be problems such as insufficient domestic hot water supply, which seriously affects comfort. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the related art. To this end, embodiments of this application provide a water flow control method, device, electronic device, and computer storage medium, which can rationally allocate heat generation, ensure sufficient domestic hot water while also providing room heating, thereby improving comfort.

[0004] In a first aspect, embodiments of this application provide a water flow control method, which is applied to a combined cooling, heating, and power (CCHP) unit, the CCHP unit including at least an air conditioning water tank and a domestic water tank, comprising:

[0005] When both the air conditioning water tank and the domestic water tank are in the state of outputting hot water, obtain the water flow rate ratio corresponding to the domestic water flow path connected to the domestic water tank;

[0006] The temperature change range of the hot water in the domestic water tank within a preset time period is obtained;

[0007] Based on the temperature change range and the preset duration, the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold is obtained;

[0008] Based on the first usage duration and the second usage duration of the hot water in the domestic water tank, the water flow ratio is adjusted to obtain a corrected water flow distribution ratio; the second usage duration is the maximum duration during which the hot water in the domestic water tank reaches the preset temperature threshold in the historical usage process.

[0009] The water flow rate of the domestic water flow path is controlled according to the modified water flow distribution ratio.

[0010] Optionally, the water flow rate ratio is adjusted based on the first usage duration and the second usage duration of the hot water in the domestic water tank to obtain a corrected water flow rate distribution ratio, including:

[0011] If the first usage duration is less than or equal to the second usage duration, the water flow ratio is adjusted based on the output heating capacity of the multi-generation unit and the heat consumption of the domestic water tank to obtain the corrected water flow distribution ratio; or,

[0012] If the first usage duration is greater than the second usage duration, then the duration difference is calculated based on the first usage duration and the second usage duration;

[0013] The corrected water flow distribution ratio is obtained by adjusting the water flow ratio based on the time difference.

[0014] Optionally, the water flow rate ratio is adjusted based on the output heating capacity of the combined heat and power unit and the heat consumption of the domestic water tank to obtain the corrected water flow rate allocation ratio, including:

[0015] Based on the output heating capacity and the heat loss coefficient of the multi-generation unit, the final heating capacity of the multi-generation unit is calculated;

[0016] The heat ratio is calculated based on the final heat output and the heat consumption, and the heat ratio is determined as the first allocation compensation ratio.

[0017] The corrected water flow allocation ratio is obtained by adjusting the water flow ratio based on the first allocation compensation ratio.

[0018] Optionally, the specific steps for calculating the output heating capacity of the combined heat and power unit include:

[0019] The unit performance curve of the multi-generation unit, the inlet and outlet temperature values ​​of the baffle of the multi-generation unit, and the first total hot water flow rate of the multi-generation unit during the first usage period are obtained.

[0020] The heat conversion coefficient of the combined heat and power unit is determined based on the current ambient temperature value and the unit's performance curve.

[0021] The output heating capacity of the multi-generation unit is calculated based on the heat conversion coefficient, the inlet temperature, the outlet temperature, and the total flow rate of the first hot water.

[0022] Optionally, the specific steps for calculating the heat consumption of the domestic water tank include:

[0023] Obtain the initial temperature value of the domestic water tank;

[0024] The target temperature value of the domestic water tank after the first usage time is obtained, as well as the environmental temperature change value of the domestic water tank and the total flow rate of the second hot water during the first usage time.

[0025] The heat consumption of the domestic water tank is calculated based on the environmental temperature change value, the initial temperature value, the target temperature value, and the total flow rate of the second hot water.

[0026] Optionally, adjusting the water flow rate ratio based on the time difference to obtain the corrected water flow rate allocation ratio includes:

[0027] If the duration difference is greater than or equal to a preset difference, a parameter matching curve is obtained, and a second allocation compensation ratio is determined based on the duration difference and the parameter matching curve.

[0028] The corrected water flow allocation ratio is obtained by adjusting the water flow ratio based on the second allocation compensation ratio; or,

[0029] If the duration difference is less than the preset difference, then obtain the parameter matching mapping table, and determine the third allocation compensation ratio based on the duration difference and the parameter matching mapping table;

[0030] The water flow ratio is adjusted based on the third allocation compensation ratio to obtain the corrected water flow allocation ratio.

[0031] Optionally, based on the temperature change amplitude and the preset duration, the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold is obtained, including:

[0032] Each preset duration and its corresponding temperature change range constitute a data set;

[0033] The data sets are fitted using a preset fitting function to obtain the temperature change curve over time.

[0034] The first usage duration is obtained by predicting the preset temperature threshold based on the temperature change curve over time.

[0035] Secondly, embodiments of this application provide a water flow control device, which is applied to a multi-generation unit, the multi-generation unit including at least an air conditioning water tank and a domestic water tank, comprising:

[0036] The first acquisition module is used to acquire the water flow ratio corresponding to the domestic water flow path connected to the domestic water tank when both the air conditioning water tank and the domestic water tank are in the state of outputting hot water.

[0037] The second acquisition module is used to acquire the temperature change range of the hot water in the domestic water tank within a preset time period.

[0038] The calculation module is used to obtain the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold based on the temperature change range and the preset duration;

[0039] The adjustment module is used to adjust the water flow ratio according to the first usage duration and the second usage duration of the hot water in the domestic water tank to obtain a corrected water flow distribution ratio; the second usage duration is the maximum duration for which the hot water in the domestic water tank reaches the preset temperature threshold during historical usage.

[0040] The control module is used to control the water flow rate of the domestic water flow path according to the corrected water flow distribution ratio.

[0041] Thirdly, embodiments of this application also provide an electronic device, including a memory storing multiple computer programs; a processor loads the computer programs from the memory to execute any of the water flow control methods provided in embodiments of this application.

[0042] Fourthly, embodiments of this application also provide a computer-readable storage medium storing multiple computer programs adapted for loading by a processor to execute any of the water flow control methods provided in embodiments of this application.

[0043] Fifthly, embodiments of this application also provide a computer program product, which includes a computer program that, when executed by a processor, implements any of the water flow control methods provided in embodiments of this application.

[0044] This application embodiment determines whether the hot water volume in the domestic water tank can meet the user's needs, and pre-allocates the heating capacity of the multi-generation unit. This solves the problem of the domestic hot water temperature gradually decreasing and the comfort being poor due to the failure to increase the water flow distribution ratio in the domestic water flow path in time, as well as the problem of the room heating efficiency being affected by the excessively high water flow distribution ratio in the domestic water flow path. Therefore, the heating capacity of the multi-generation unit can be reasonably allocated, ensuring sufficient domestic hot water while also taking into account room heating, thus improving comfort. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is one of the flowcharts illustrating the water flow control method provided in the embodiments of this application;

[0047] Figure 2 This is a schematic diagram of the temperature change over time curve provided in the embodiments of this application;

[0048] Figure 3 This is a schematic diagram of the parameter matching curve provided in the embodiments of this application.

[0049] Figure 4 This is the second flowchart illustrating the water flow control method provided in the embodiments of this application;

[0050] Figure 5 This is a schematic diagram of the water flow control device provided in the embodiments of this application;

[0051] Figure 6 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. At the same time, in the description of the embodiments of this application, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] This application provides a water flow control method, apparatus, electronic device, and computer storage medium. Specifically, this application will be described from the perspective of a water flow control device, which can be integrated into an electronic device, meaning the water flow control method of this application can be executed by the electronic device. Optionally, the electronic device includes a terminal device. The terminal device can be a mobile phone, tablet computer, smart Bluetooth device, laptop computer, game console, or personal computer (PC), etc. Optionally, the electronic device includes a server, which can be an independent server, a server network, or a server cluster, including but not limited to computers, network hosts, single network servers, sets of network servers, or cloud servers composed of servers. The cloud server consists of a large number of computers or network servers based on cloud computing.

[0054] It should be noted that the order of description in the following embodiments is not intended to limit the preferred order of embodiments. Although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown in the figures.

[0055] This application uses a combined heat and power (CHP) unit as an example for illustration, and the following detailed description is provided in conjunction with the accompanying drawings. Optionally, the water flow control method of this application embodiment is applied to a combined heat and power (CHP) unit.

[0056] In this application, the multi-generation unit can be understood as a tri-generation system. A tri-generation system can be used for cooling, heating, and domestic hot water supply to meet different usage needs. Therefore, a tri-generation system includes at least an air conditioning water tank and a domestic water tank. The air conditioning water tank is used for heating or cooling, and the domestic water tank is used for domestic hot water supply. In one embodiment, when a user needs heating or cooling, they can open the water flow path of the air conditioning water tank and control the water flow rate to control the heating or cooling supply; the same applies to domestic hot water supply.

[0057] Optional, see reference Figure 1 , Figure 1 This is one of the flowcharts illustrating the water flow control method provided in this application embodiment. The specific flow of the water flow control method provided in this application embodiment can be summarized in steps 10 to 50, including:

[0058] Step 10: When both the air conditioning water tank and the domestic water tank are in the state of outputting hot water, obtain the water flow rate ratio corresponding to the domestic water flow path connected to the domestic water tank.

[0059] Optionally, when users have heating needs, the air conditioning water tank will output hot water, thus consuming the hot water in the tank. To ensure that the hot water in the air conditioning water tank can continuously meet the user's heating needs, the combined heat and power (CHP) system needs to continuously replenish the hot water in the air conditioning water tank. The pipe connecting the air conditioning water tank and the CHP system is the hot water supply path. Similarly, when users have domestic hot water needs, the domestic water tank will output hot water, thus consuming the hot water in the domestic water tank. To ensure that the hot water in the domestic water tank can continuously meet the user's domestic hot water needs, the CHP system needs to continuously replenish the hot water in the domestic water tank. The pipe connecting the domestic water tank and the CHP system is the domestic water supply path.

[0060] Therefore, when the combined heat and power (CHP) system detects that the user has both heating and domestic hot water needs, the hot water in both the air conditioning tank and the domestic water tank will be consumed equally, meaning that both the air conditioning tank and the domestic water tank are in a state of outputting hot water. Therefore, when it is determined that both the air conditioning tank and the domestic water tank are in a state of outputting hot water, the total water flow rate output by the CHP system, the first water flow rate of the domestic water tank corresponding to the domestic water flow path, and the second water flow rate of the air conditioning tank corresponding to the hot water supply flow path are obtained by using a flow meter or the angle of the water distribution valve.

[0061] Furthermore, the combined water supply unit calculates the water flow ratio of the domestic water tank corresponding to the domestic water flow path based on the first water flow and the total water flow, that is, the water flow ratio of the domestic water flow path = the first water flow / the total water flow. Similarly, the water flow ratio of the air conditioning water tank corresponding to the hot water supply flow path can be obtained.

[0062] Step 20: Obtain the temperature change range of the hot water in the domestic water tank within a preset time period.

[0063] Optionally, because the rate at which hot water is consumed and the rate at which it is replenished in the domestic water tank are not the same, the temperature of the hot water in the domestic water tank will change. Therefore, the combined heat and power (CHP) system needs to obtain the temperature change range of the hot water in the domestic water tank within a preset time period, where the preset time period is set according to actual conditions, such as 10 minutes, 5 minutes, 1 hour, etc.

[0064] Step 30: Based on the temperature change range and the preset duration, obtain the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold.

[0065] Optionally, the combined heat and power supply device fits a temperature change curve based on the preset duration and the corresponding temperature change amplitude, and then predicts the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold based on the temperature change curve. The preset temperature threshold is set according to actual conditions, such as 70℃, 75℃, 80℃, etc. The specific process is described in steps 301 to 303.

[0066] Step 40: Adjust the water flow rate ratio based on the first usage time and the second usage time of the hot water in the domestic water tank to obtain a corrected water flow rate distribution ratio.

[0067] Optionally, the combined heat and power (CHP) device acquires a second usage duration of the hot water in the domestic water tank, wherein the second usage duration is the maximum duration during which the hot water in the domestic water tank reaches a preset temperature threshold during historical usage. Further, the CHP device compares the first usage duration and the second usage duration to obtain a comparison result. Therefore, the comparison result can be that the first usage duration is less than or equal to the second usage duration, or that the first usage duration is greater than the second usage duration.

[0068] Furthermore, the combined heat and power unit adjusts the water flow ratio of the domestic water flow path based on the comparison results to obtain the corrected water flow distribution ratio of the domestic water flow path. The specific process is described in steps 401 to 403.

[0069] Step 50: Control the water flow rate of the domestic water flow path according to the modified water flow distribution ratio.

[0070] Furthermore, the combined heat and power (CHP) unit controls the water flow in the domestic water path according to the corrected water flow distribution ratio, that is, it replenishes the hot water in the domestic water tank according to the corrected water flow distribution ratio.

[0071] This application embodiment determines whether the hot water volume in the domestic water tank can meet the user's needs, and pre-allocates the heating capacity of the multi-generation unit. This solves the problem of the domestic hot water temperature gradually decreasing and the comfort being poor due to the failure to increase the water flow distribution ratio in the domestic water flow path in time, as well as the problem of the room heating efficiency being affected by the excessively high water flow distribution ratio in the domestic water flow path. Therefore, the heating capacity of the multi-generation unit can be reasonably allocated, ensuring sufficient domestic hot water while also taking into account room heating, thus improving comfort.

[0072] In an optional example, steps 301 to 303 are described as follows:

[0073] Step 301: Each preset duration and its corresponding temperature change range are grouped into a data set;

[0074] Step 302: Fit each data set based on a preset fitting function to obtain the temperature change curve over time;

[0075] Step 303: Based on the temperature change curve over time, predict the preset temperature threshold to obtain the first usage duration.

[0076] Optionally, the combined heat and power unit can use each preset duration and its corresponding temperature change range as a data group to obtain multiple data groups. Each data group can be represented as [preset duration, temperature change range].

[0077] Furthermore, the combined heat and power (CHP) device fits each data set to a preset fitting function to obtain a temperature-time curve. The fitting function can include linear, polynomial, exponential, and logarithmic functions. In one embodiment, the fitting function is a polynomial function, which can be expressed as T = Ae^(-T / A). (t / B) +Ct 2 +Dt+E, where T is the temperature change range and t is the preset duration.

[0078] Furthermore, the combined heat and power (CHP) unit utilizes the polynomial function T = Ae(t / B) +Ct 2 The function +Dt+E fits multiple data sets [preset duration, temperature variation range] to calculate the values ​​of fitting parameters A, B, C, D, and E. These values ​​are then substituted into the polynomial function T = Ae^(-Dt+E). (t / B) +Ct 2 +Dt+E, the temperature change curve over time, in one embodiment, the temperature change curve over time is as follows: Figure 2 , Figure 2 This is a schematic diagram of the temperature change curve over time provided in the embodiments of this application.

[0079] Furthermore, the combined heat and power unit performs matching prediction based on the temperature change curve over time according to the preset temperature threshold, and obtains the first usage time when the temperature reaches the preset temperature threshold.

[0080] Continuing with the above embodiments, the preset temperature threshold is 85°C. The preset temperature threshold of 85°C is matched with the temperature change curve over time to obtain data point A, which corresponds to a first usage time of 2 hours. The preset temperature threshold is 70°C. The preset temperature threshold of 70°C is matched with the temperature change curve over time to obtain data point B, which corresponds to a first usage time of 5 hours.

[0081] The embodiments of this application use a temperature change curve determined by a preset duration and its corresponding temperature change amplitude to predict the first usage duration, thus ensuring the accuracy of the first usage duration.

[0082] In an optional example, steps 401 to 403 are described as follows:

[0083] Step 401: If the first usage time is less than or equal to the second usage time, the water flow ratio is adjusted based on the output heating capacity of the multi-generation unit and the heat consumption of the domestic water tank to obtain the corrected water flow distribution ratio.

[0084] Step 402: If the first usage duration is greater than the second usage duration, then calculate the duration difference based on the first usage duration and the second usage duration;

[0085] Step 403: Adjust the water flow rate ratio based on the time difference to obtain the corrected water flow rate allocation ratio.

[0086] Optionally, if the first usage time is less than or equal to the second usage time, the combined heat and power unit obtains the output heating capacity of the combined heat and power unit and the heat consumption of the domestic water tank, and adjusts the water flow ratio according to the output heating capacity of the combined heat and power unit and the heat consumption of the domestic water tank to obtain the corrected water flow distribution ratio, as described in steps 4011 to 4013.

[0087] Optionally, if the first usage time is longer than the second usage time, the combined power supply device calculates the time difference based on the first usage time and the second usage time, and adjusts the water flow ratio according to the time difference to obtain the corrected water flow distribution ratio, as described in steps 4031 to 4034.

[0088] In one embodiment, obtaining the output heating capacity of the combined heat and power unit specifically includes steps a to c:

[0089] Step a: Obtain the unit performance curve of the multi-generation unit, the inlet and outlet temperature values ​​of the baffle of the multi-generation unit, and the first total hot water flow rate of the multi-generation unit within the first usage period.

[0090] Step b: Determine the heat conversion coefficient of the multi-generation unit based on the current ambient temperature value and the unit's performance curve;

[0091] Step c: Calculate the output heating capacity of the multi-generation unit based on the heat conversion coefficient, the inlet temperature, the outlet temperature, and the total flow rate of the first hot water.

[0092] Optionally, the combined heat and power (CHP) system acquires the unit performance curves of the CHP unit, the inlet and outlet temperatures of the CHP unit's baffles, and the total hot water flow rate of the CHP unit during the first usage period. Since the heat conversion coefficient of the CHP unit varies under different ambient temperatures, it is also necessary to acquire the current ambient temperature of the CHP unit.

[0093] Furthermore, the combined heat and power (CHP) unit matches data from the CHP unit's performance curve based on the current ambient temperature value to obtain the CHP unit's heat conversion coefficient at the current ambient temperature. In one embodiment, the data points on the unit's performance curve are: [ambient temperature -30℃, heat conversion coefficient 0.7], [ambient temperature -20℃, heat conversion coefficient 0.75], [ambient temperature -10℃, heat conversion coefficient 0.8], [ambient temperature 0℃, heat conversion coefficient 0.85], [ambient temperature 0-10℃, heat conversion coefficient 0.9], [ambient temperature 10-25℃, heat conversion coefficient 0.95], and [ambient temperature greater than 25℃, heat conversion coefficient 1]. The current ambient temperature of the CHP unit is 15℃, and the heat conversion coefficient of the CHP unit is 0.95.

[0094] Furthermore, the combined heat and power (CHP) system calculates the output heating capacity of the CHP unit based on the heat conversion coefficient, inlet water temperature, outlet water temperature, and total hot water flow rate. The specific calculation formula is as follows:

[0095] Q1 = c * m1 * (T1 - T2) * ε

[0096] Where Q1 is the output heating capacity, c is the specific heat capacity, m1 is the total water flow rate, T1 is the outlet temperature, T2 is the inlet temperature, and ε is the heat conversion coefficient.

[0097] In one embodiment, obtaining the heat consumed by the domestic water tank specifically includes steps d to f:

[0098] Step d: Obtain the initial temperature value of the domestic water tank;

[0099] Step e: Obtain the target temperature value of the domestic water tank after the first usage time, as well as the environmental temperature change value of the domestic water tank and the total flow rate of the second hot water during the first usage time.

[0100] Step f: Calculate the heat consumption of the domestic water tank based on the environmental temperature change value, the initial temperature value, the target temperature value, and the total flow rate of the second hot water.

[0101] Optionally, the combined heat and power (CHP) device acquires the initial temperature value of the domestic water tank, the target temperature value of the domestic water tank after the first usage period, and the total hot water flow rate of the domestic water tank during the first usage period. Since ambient temperature also affects the heat output of the domestic water tank, it is also necessary to acquire the ambient temperature variation values ​​of the domestic water tank during the first usage period and determine the temperature influence coefficient based on these ambient temperature variation values. In one embodiment, when the ambient temperature is 25°C, the temperature influence coefficient is 1; for ambient temperature variation values ​​greater than 25°C, regardless of the actual ambient temperature variation value, the temperature influence coefficient is always 1.

[0102] Optionally, for ambient temperature changes below 25℃, a change unit is defined as 5℃. That is, for every 5℃ change (including cases less than 5℃), the temperature influence coefficient changes by 0.01. For example, the temperature change from an ambient temperature of 13℃ to a temperature of 25℃ is 12, which is 3 change units, and the temperature influence coefficient is 1.03.

[0103] Furthermore, the combined heat and power (CHP) system calculates the heat consumption of the domestic water tank based on the temperature influence coefficient determined by the ambient temperature change, the initial temperature, the target temperature, and the total hot water flow rate. The formula is as follows:

[0104] Q2=c*m2*(T3-T4)*σ

[0105] Where Q2 is the heat consumed, c is the specific heat capacity, m2 is the total hot water flow rate, T3 is the target temperature value, T4 is the initial temperature value, and σ is the temperature influence coefficient.

[0106] This application embodiment determines whether the hot water volume in the domestic water tank can meet the user's needs, and pre-allocates the heating capacity of the multi-generation unit. This solves the problem of the domestic hot water temperature gradually decreasing and the comfort being poor due to the failure to increase the water flow distribution ratio in the domestic water flow path in time, as well as the problem of the room heating efficiency being affected by the excessively high water flow distribution ratio in the domestic water flow path. Therefore, the heating capacity of the multi-generation unit can be reasonably allocated, ensuring sufficient domestic hot water while also taking into account room heating, thus improving comfort.

[0107] In an optional embodiment, steps 4011 to 4013 are described as follows:

[0108] Step 4011: Calculate the final heating capacity of the multi-generation unit based on the output heating capacity and the heat loss coefficient of the multi-generation unit;

[0109] Step 4012: Calculate the heat ratio based on the final heat output and the heat consumption, and determine the heat ratio as the first allocation compensation ratio;

[0110] Step 4013: Adjust the water flow ratio based on the first allocation compensation ratio to obtain the corrected water flow allocation ratio.

[0111] Optionally, since there are losses during the output heating process of the multi-generation unit, the co-generation device obtains the heat loss coefficient of the multi-generation unit. Further, the co-generation device calculates the final heating capacity of the multi-generation unit based on the output heating capacity and the heat loss coefficient of the multi-generation unit. Therefore, the final heating capacity of the multi-generation unit = output heating capacity * (1 - heat loss coefficient).

[0112] Furthermore, the combined heat and power (CHP) unit calculates the heat ratio based on the final heat output and heat consumption. Therefore, the heat ratio = heat consumption / final heat output, and the heat ratio is determined as the allocation compensation ratio.

[0113] Furthermore, the combined heat and power (CHP) unit adjusts the water flow ratio according to the allocation compensation ratio, that is, by summing the allocation compensation ratio and the water flow ratio, the resulting sum is the corrected water flow allocation ratio.

[0114] This application embodiment determines whether the hot water volume in the domestic water tank can meet the user's needs, and pre-allocates the heating capacity of the multi-generation unit. This solves the problem of the domestic hot water temperature gradually decreasing and the comfort being poor due to the failure to increase the water flow distribution ratio in the domestic water flow path in time, as well as the problem of the room heating efficiency being affected by the excessively high water flow distribution ratio in the domestic water flow path. Therefore, the heating capacity of the multi-generation unit can be reasonably allocated, ensuring sufficient domestic hot water while also taking into account room heating, thus improving comfort.

[0115] In an optional embodiment, steps 4031 to 4034 are described as follows:

[0116] Step 4031: If the duration difference is greater than or equal to a preset difference, obtain the parameter matching curve, and determine the second allocation compensation ratio based on the duration difference and the parameter matching curve;

[0117] Step 4032: Adjust the water flow rate ratio based on the second allocation compensation ratio to obtain the corrected water flow rate allocation ratio;

[0118] Step 4033: If the duration difference is less than the preset difference, obtain the parameter matching mapping table, and determine the third allocation compensation ratio based on the duration difference and the parameter matching mapping table;

[0119] Step 4034: Adjust the water flow ratio based on the third allocation compensation ratio to obtain the corrected water flow allocation ratio.

[0120] Optionally, if the duration difference is greater than or equal to a preset difference, the combined heat and power (CHP) device acquires a parameter matching curve. The preset difference is set according to actual conditions, such as 1 hour or 2 hours. The parameter matching curve is pre-constructed based on the duration difference and its corresponding compensation ratio. Figure 3 , Figure 3 This is a schematic diagram of the parameter matching curve provided in the embodiments of this application.

[0121] Furthermore, the combined heat and power (CHP) unit matches the parameter matching curve based on the time difference, determines the allocation compensation ratio, and determines the difference between the flow ratio and the allocation compensation ratio as the corrected water flow allocation ratio.

[0122] In one embodiment, the flow rate ratio is m, the time difference is 2 hours, and data point C is obtained by matching in the parameter matching curve. The data point C corresponds to b. Therefore, the corrected water flow rate allocation ratio is mb.

[0123] Optionally, if the duration difference is less than a preset difference, the combined power supply device obtains a parameter matching mapping table. The parameter matching mapping table is an association mapping table established based on the duration difference and its corresponding allocation compensation ratio. In one embodiment, the parameter matching mapping table is shown in Table 1.

[0124] Table 1 Parameter Matching Map

[0125] Duration difference Allocation of compensation ratio Duration difference Allocation of compensation ratio Δt1 b1 Δt2 b2 Δt3 b3 Δt4 b4

[0126] Furthermore, the combined heat and power (CHP) unit matches the parameters in the parameter matching mapping table based on the time difference to obtain the allocation compensation ratio, and determines the difference between the flow ratio and the allocation compensation ratio as the corrected water flow allocation ratio.

[0127] In one embodiment, the flow rate ratio is m, the time difference is Δt2, and the allocation compensation ratio b2 is obtained by matching in the parameter matching mapping table. Therefore, the corrected water flow rate allocation ratio = m - b2.

[0128] This application embodiment determines whether the hot water volume in the domestic water tank can meet the user's needs, and pre-allocates the heating capacity of the multi-generation unit. This solves the problem of the domestic hot water temperature gradually decreasing and the comfort being poor due to the failure to increase the water flow distribution ratio in the domestic water flow path in time, as well as the problem of the room heating efficiency being affected by the excessively high water flow distribution ratio in the domestic water flow path. Therefore, the heating capacity of the multi-generation unit can be reasonably allocated, ensuring sufficient domestic hot water while also taking into account room heating, thus improving comfort.

[0129] It should be noted that if the first usage time is longer than the second usage time, the second usage time will be updated with the first usage time, that is, the second usage time will be updated to the new second usage time.

[0130] Optional, refer to Figure 4 , Figure 4 This is the second flowchart illustrating the water flow control method provided in this application embodiment. Therefore, the overall flow of the water flow control method in this application embodiment is as follows:

[0131] When heating demand and domestic hot water demand are detected, and domestic hot water is being consumed (meaning both the air conditioning water tank and the domestic water tank are outputting hot water), the following control measures are implemented:

[0132] ① Obtain the maximum duration for hot water in the domestic water tank to reach the preset temperature threshold during historical usage. The maximum duration can be expressed as t. max ;

[0133] ② Obtain the output heating capacity of the multi-generation unit. The output heating capacity can be expressed as Q1, Q1=c*m1*(T1-T2)*ε; where c is the specific heat capacity, m1 is the total water flow rate, T1 is the outlet temperature, T2 is the inlet temperature, and ε is the heat conversion coefficient.

[0134] ③ Obtain the total water flow rate output by the combined water supply unit and the first water flow rate of the domestic water tank corresponding to the domestic water flow path by measuring the angle of the flow meter or the water distribution valve. Then, obtain the water flow rate ratio of the domestic water flow path based on the total water flow rate and the first water flow rate. The water flow rate ratio can be expressed as m, that is, m = first water flow rate / total water flow rate.

[0135] ④ Based on the temperature T of the hot water in the domestic hot water tank within the preset time t1. 生活热水 The temperature change amplitude T is calculated using the least squares method, according to the formula T = Ae^(-T / T). (t / B) +Ct 2 The fit is performed in the form +Dt+E, and the temperature T is determined by the fitted formula. 生活热水 Reaching the preset temperature threshold T 舒适临界 The first usage duration, which can be represented as t. 预测 ;

[0136] ⑤ If t 预测 ≤t max This indicates that the current domestic hot water supply is insufficient to meet the demand, and the heat output distribution ratio needs to be increased. Therefore, the heat consumption of the domestic hot water tank is calculated as Q2 = c * m2 * (T3 - T4) * σ, where Q2 is the heat consumption, c is the specific heat capacity, m2 is the total hot water flow rate, T3 is the target temperature value, T4 is the initial temperature value, and σ is the temperature influence coefficient. The water flow rate ratio of the domestic water flow path is adjusted to obtain the first distribution compensation ratio, which can be expressed as a, a = Q2 / Q1. Therefore, a is added to the water flow rate ratio m, that is, the water flow rate distribution ratio is corrected to m + a.

[0137] ⑥If t 预测 >t max This indicates that there is currently sufficient domestic hot water to meet the demand, and the heating capacity allocation ratio can be reduced; according to Δt=t 预测 -t max Query the parameter table to obtain the percentage b that the water flow rate of the domestic water flow path needs to be reduced. Adjust the percentage of the water flow rate of the domestic water flow path to obtain the second allocation compensation ratio, which can be expressed as b. Therefore, reduce b based on the water flow rate ratio m, that is, correct the water flow rate allocation ratio to mb.

[0138] ⑦ Record the duration of domestic hot water use, t. If it exceeds t... maxThen update t with t. max .

[0139] The water flow control device provided in the embodiments of this application is described below. The water flow control device described below can be referred to in correspondence with the water flow control method described above.

[0140] Reference Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of the water flow control device provided in the embodiments of this application. The water flow control device may include:

[0141] The first acquisition module 501 is used to acquire the water flow ratio of the domestic water flow path connected to the domestic water tank when both the air conditioning water tank and the domestic water tank are in the state of outputting hot water.

[0142] The second acquisition module 502 is used to acquire the temperature change range of the hot water in the domestic water tank within a preset time period.

[0143] The calculation module 503 is used to obtain the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold based on the temperature change range and the preset duration.

[0144] The adjustment module 504 is used to adjust the water flow ratio according to the first usage time and the second usage time of the hot water in the domestic water tank to obtain a corrected water flow distribution ratio.

[0145] The control module 505 is used to control the water flow rate of the domestic water flow path according to the corrected water flow distribution ratio.

[0146] This application embodiment determines whether the hot water volume in the domestic water tank can meet the user's needs, and pre-allocates the heating capacity of the multi-generation unit. This solves the problem of the domestic hot water temperature gradually decreasing and the comfort being poor due to the failure to increase the water flow distribution ratio in the domestic water flow path in time, as well as the problem of the room heating efficiency being affected by the excessively high water flow distribution ratio in the domestic water flow path. Therefore, the heating capacity of the multi-generation unit can be reasonably allocated, ensuring sufficient domestic hot water while also taking into account room heating, thus improving comfort.

[0147] In an optional example, adjustment module 504 is also used for:

[0148] If the first usage duration is less than or equal to the second usage duration, the water flow ratio is adjusted based on the output heating capacity of the multi-generation unit and the heat consumption of the domestic water tank to obtain the corrected water flow distribution ratio; or,

[0149] If the first usage duration is greater than the second usage duration, then the duration difference is calculated based on the first usage duration and the second usage duration;

[0150] The corrected water flow distribution ratio is obtained by adjusting the water flow ratio based on the time difference.

[0151] In an optional example, adjustment module 504 is also used for:

[0152] Based on the output heating capacity and the heat loss coefficient of the multi-generation unit, the final heating capacity of the multi-generation unit is calculated;

[0153] The heat ratio is calculated based on the final heat output and the heat consumption, and the heat ratio is determined as the first allocation compensation ratio.

[0154] The corrected water flow allocation ratio is obtained by adjusting the water flow ratio based on the first allocation compensation ratio.

[0155] In an optional example, adjustment module 504 is also used for:

[0156] The unit performance curve of the multi-generation unit, the inlet and outlet temperature values ​​of the baffle of the multi-generation unit, and the first total hot water flow rate of the multi-generation unit during the first usage period are obtained.

[0157] The heat conversion coefficient of the combined heat and power unit is determined based on the current ambient temperature value and the unit's performance curve.

[0158] The output heating capacity of the multi-generation unit is calculated based on the heat conversion coefficient, the inlet temperature, the outlet temperature, and the total flow rate of the first hot water.

[0159] In an optional example, adjustment module 504 is also used for:

[0160] Obtain the initial temperature value of the domestic water tank;

[0161] The target temperature value of the domestic water tank after the first usage time is obtained, as well as the environmental temperature change value of the domestic water tank and the total flow rate of the second hot water during the first usage time.

[0162] The heat consumption of the domestic water tank is calculated based on the environmental temperature change value, the initial temperature value, the target temperature value, and the total flow rate of the second hot water.

[0163] In an optional example, adjustment module 504 is also used for:

[0164] If the duration difference is greater than or equal to a preset difference, a parameter matching curve is obtained, and a second allocation compensation ratio is determined based on the duration difference and the parameter matching curve.

[0165] The corrected water flow allocation ratio is obtained by adjusting the water flow ratio based on the second allocation compensation ratio; or,

[0166] If the duration difference is less than the preset difference, then obtain the parameter matching mapping table, and determine the third allocation compensation ratio based on the duration difference and the parameter matching mapping table;

[0167] The water flow ratio is adjusted based on the third allocation compensation ratio to obtain the corrected water flow allocation ratio.

[0168] In an optional example, the calculation module 503 is also used for:

[0169] Each preset duration and its corresponding temperature change range constitute a data set;

[0170] The data sets are fitted using a preset fitting function to obtain the temperature change curve over time.

[0171] The first usage duration is obtained by predicting the preset temperature threshold based on the temperature change curve over time.

[0172] The specific embodiments of the water flow control device provided in this application are basically the same as the embodiments of the water flow control method, and will not be described in detail here.

[0173] Optional, such as Figure 6 As shown, Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include: a processor 610, a communication interface 620, a memory 630, and a communication bus 640, wherein the processor 610, the communication interface 620, and the memory 630 communicate with each other via the communication bus 640. The processor 610 can call a computer program in the memory 630 to execute the steps of a water flow control method, such as:

[0174] When both the air conditioning water tank and the domestic water tank are in the state of outputting hot water, obtain the water flow rate ratio corresponding to the domestic water flow path connected to the domestic water tank;

[0175] The temperature change range of the hot water in the domestic water tank within a preset time period is obtained;

[0176] Based on the temperature change range and the preset duration, the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold is obtained;

[0177] Based on the first usage duration and the second usage duration of the hot water in the domestic water tank, the water flow ratio is adjusted to obtain a corrected water flow distribution ratio; the second usage duration is the maximum duration during which the hot water in the domestic water tank reaches the preset temperature threshold in the historical usage process.

[0178] The water flow rate of the domestic water flow path is controlled according to the modified water flow distribution ratio.

[0179] Furthermore, the logical computer program in the aforementioned memory 630 can be implemented as a software functional unit and sold or used as an independent product, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several computer programs to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0180] On the other hand, embodiments of this application also provide a non-transitory computer-readable storage medium, which includes a computer program. The computer program can be stored on the non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can perform the steps of the water flow control method provided in the above embodiments, such as including:

[0181] When both the air conditioning water tank and the domestic water tank are in the state of outputting hot water, obtain the water flow rate ratio corresponding to the domestic water flow path connected to the domestic water tank;

[0182] The temperature change range of the hot water in the domestic water tank within a preset time period is obtained;

[0183] Based on the temperature change range and the preset duration, the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold is obtained;

[0184] Based on the first usage duration and the second usage duration of the hot water in the domestic water tank, the water flow ratio is adjusted to obtain a corrected water flow distribution ratio; the second usage duration is the maximum duration during which the hot water in the domestic water tank reaches the preset temperature threshold in the historical usage process.

[0185] The water flow rate of the domestic water flow path is controlled according to the modified water flow distribution ratio.

[0186] In another aspect, embodiments of this application also provide a computer product, which includes a computer program. The computer program can be stored on the computer product, and when the computer program is executed by a processor, the computer can perform the steps of the water flow control method provided in the above embodiments, such as including:

[0187] When both the air conditioning water tank and the domestic water tank are in the state of outputting hot water, obtain the water flow rate ratio corresponding to the domestic water flow path connected to the domestic water tank;

[0188] The temperature change range of the hot water in the domestic water tank within a preset time period is obtained;

[0189] Based on the temperature change range and the preset duration, the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold is obtained;

[0190] Based on the first usage duration and the second usage duration of the hot water in the domestic water tank, the water flow ratio is adjusted to obtain a corrected water flow distribution ratio; the second usage duration is the maximum duration during which the hot water in the domestic water tank reaches the preset temperature threshold in the historical usage process.

[0191] The water flow rate of the domestic water flow path is controlled according to the modified water flow distribution ratio.

[0192] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0193] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several computer programs to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0194] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A water flow control method, characterized in that, The water flow control method is applied to a combined cooling, heating, and power (CCHP) unit, which includes at least an air conditioning water tank and a domestic water tank, comprising: When both the air conditioning water tank and the domestic water tank are in the state of outputting hot water, obtain the water flow rate ratio corresponding to the domestic water flow path connected to the domestic water tank; The temperature change range of the hot water in the domestic water tank within a preset time period is obtained; Based on the temperature change range and the preset duration, the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold is obtained; Based on the first usage duration and the second usage duration of the hot water in the domestic water tank, the water flow ratio is adjusted to obtain a corrected water flow distribution ratio; the second usage duration is the maximum duration during which the hot water in the domestic water tank reaches the preset temperature threshold in the historical usage process. The water flow rate of the domestic water flow path is controlled according to the modified water flow distribution ratio.

2. The water flow control method according to claim 1, characterized in that, The step of adjusting the water flow ratio based on the first usage duration and the second usage duration of the hot water in the domestic water tank to obtain a corrected water flow distribution ratio includes: If the first usage duration is less than or equal to the second usage duration, the water flow ratio is adjusted based on the output heating capacity of the multi-generation unit and the heat consumption of the domestic water tank to obtain the corrected water flow distribution ratio; or, If the first usage duration is greater than the second usage duration, then the duration difference is calculated based on the first usage duration and the second usage duration; The corrected water flow distribution ratio is obtained by adjusting the water flow ratio based on the time difference.

3. The water flow control method according to claim 2, characterized in that, The step of adjusting the water flow ratio based on the output heating capacity of the combined heat and power unit and the heat consumption of the domestic water tank to obtain the corrected water flow distribution ratio includes: Based on the output heating capacity and the heat loss coefficient of the multi-generation unit, the final heating capacity of the multi-generation unit is calculated; The heat ratio is calculated based on the final heat output and the heat consumption, and the heat ratio is determined as the first allocation compensation ratio. The corrected water flow allocation ratio is obtained by adjusting the water flow ratio based on the first allocation compensation ratio.

4. The water flow control method according to claim 2, characterized in that, The specific steps for calculating the output heating capacity of the combined heat and power unit include: The unit performance curve of the multi-generation unit, the inlet and outlet temperature values ​​of the baffle of the multi-generation unit, and the first total hot water flow rate of the multi-generation unit during the first usage period are obtained. The heat conversion coefficient of the combined heat and power unit is determined based on the current ambient temperature value and the unit's performance curve. The output heating capacity of the multi-generation unit is calculated based on the heat conversion coefficient, the inlet temperature, the outlet temperature, and the total flow rate of the first hot water.

5. The water flow control method according to claim 2, characterized in that, The specific steps for calculating the heat consumption of the domestic water tank include: Obtain the initial temperature value of the domestic water tank; The target temperature value of the domestic water tank after the first usage time is obtained, as well as the environmental temperature change value of the domestic water tank and the total flow rate of the second hot water during the first usage time. The heat consumption of the domestic water tank is calculated based on the environmental temperature change value, the initial temperature value, the target temperature value, and the total flow rate of the second hot water.

6. The water flow control method according to claim 2, characterized in that, The step of adjusting the water flow ratio based on the time difference to obtain the corrected water flow allocation ratio includes: If the duration difference is greater than or equal to a preset difference, a parameter matching curve is obtained, and a second allocation compensation ratio is determined based on the duration difference and the parameter matching curve. The corrected water flow allocation ratio is obtained by adjusting the water flow ratio based on the second allocation compensation ratio; or, If the duration difference is less than the preset difference, then obtain the parameter matching mapping table, and determine the third allocation compensation ratio based on the duration difference and the parameter matching mapping table; The water flow ratio is adjusted based on the third allocation compensation ratio to obtain the corrected water flow allocation ratio.

7. The water flow control method according to any one of claims 1 to 6, characterized in that, The step of obtaining the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold based on the temperature change amplitude and the preset duration includes: Each preset duration and its corresponding temperature change range constitute a data set; The data sets are fitted using a preset fitting function to obtain the temperature change curve over time. The first usage duration is obtained by predicting the preset temperature threshold based on the temperature change curve over time.

8. A water flow control device, characterized in that, The water flow control device is applied to a combined cooling, heating, and power (CCHP) unit, which includes at least an air conditioning water tank and a domestic water tank, comprising: The first acquisition module is used to acquire the water flow ratio corresponding to the domestic water flow path connected to the domestic water tank when both the air conditioning water tank and the domestic water tank are in the state of outputting hot water. The second acquisition module is used to acquire the temperature change range of the hot water in the domestic water tank within a preset time period. The calculation module is used to obtain the first usage time for the hot water in the domestic water tank to reach the preset temperature threshold based on the temperature change range and the preset duration; The adjustment module is used to adjust the water flow ratio according to the first usage duration and the second usage duration of the hot water in the domestic water tank to obtain a corrected water flow distribution ratio; the second usage duration is the maximum duration for which the hot water in the domestic water tank reaches the preset temperature threshold during historical usage. The control module is used to control the water flow rate of the domestic water flow path according to the corrected water flow distribution ratio.

9. An electronic device, characterized in that, The device includes a processor and a memory, the memory storing multiple computer programs; the processor loads the computer programs from the memory to execute the water flow control method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a plurality of computer programs adapted for loading by a processor to perform the water flow control method as described in any one of claims 1 to 7.

Images