Heating system, its control method, and computer-readable storage medium

Abstract

The present invention discloses a heating system, a control method thereof, and a computer-readable storage medium. The heating system control method includes: presetting an initial opening mapping model, where the initial opening mapping model includes valve initial openings respectively corresponding to different target mixing water temperatures of the floor heating, and the target mixing water temperature of the floor heating is the target temperature value of the hot water provided by the mixing valve to the floor heating heat exchanger; when it is detected that the floor heating area changes from no heating demand to having heating demand, or when it is detected that the floor heating area has heating demand after the mixing valve is reset, or when the heat pump changes from a constant temperature shutdown state to a constant temperature startup state, setting the mixing valve to the corresponding valve initial opening according to the initial opening mapping model; when the preset adjustment opening condition is satisfied, starting proportional-integral-derivative adjustment of the opening of the mixing valve. According to this heating system control method, it is possible to reduce system fluctuations caused by water temperature fluctuations or start-stop control, and extend the service life of the mixing valve and its control components.

Description

Technical Field

[0001] The present invention relates to the field of heating systems, and in particular, to a heating system, a control method thereof, and a computer-readable storage medium. Background Art

[0002] The heating system can supply heat to the floor heating area. Usually, a mixing valve is used to mix the relatively hot water generated by the heat pump with the relatively cold water in the floor heating return water pipeline and then supply it to the floor heating heat exchanger.

[0003] In the prior art, each time the heating of the floor heating area is started, the mixing valve needs to repeatedly adjust the opening degree multiple times, reducing the service life of the components related to the mixing valve. Summary of the Invention

[0004] The present invention provides a heating system, a control method thereof, and a computer-readable storage medium, which can improve the service life of the components related to the mixing valve.

[0005] In a first aspect, an embodiment of the present invention provides a control method for a heating system, which is used for a heating system that is at least used to supply heat to a floor heating area. The heating system includes a heat pump, a floor heating heat exchanger, a mixing valve, and a floor heating return water pipeline. The floor heating heat exchanger is located in the floor heating area. The mixing valve is connected between the water outlet end of the heat pump and the floor heating heat exchanger. The floor heating return water pipeline connects the floor heating return water end of the floor heating heat exchanger and the mixing valve. The control method for the heating system includes: presetting an initial opening degree mapping model, where the initial opening degree mapping model includes valve initial opening degrees corresponding to different target mixing temperatures for the floor heating, and the target mixing temperature for the floor heating is the target temperature value of the hot water provided by the mixing valve to the floor heating heat exchanger; when it is detected that the floor heating area changes from no heating demand to having heating demand, or when it is detected that the floor heating area has heating demand after the mixing valve is reset, or when the heat pump changes from a constant temperature shutdown state to a constant temperature startup state, setting the mixing valve to the corresponding valve initial opening degree according to the initial opening degree mapping model; when a preset adjustment opening condition is met, starting proportional-integral-derivative adjustment of the opening degree of the mixing valve.

[0006] According to the foregoing embodiment of the first aspect of the present invention, the control method for the heating system further includes: during the process of performing proportional-integral-derivative adjustment on the mixing valve, if a preset opening degree memory condition is met, updating the initial opening degree mapping model according to the current opening degree of the mixing valve.

[0007] According to any of the foregoing embodiments of the first aspect of the present invention, the satisfaction of the preset opening memory condition includes simultaneously satisfying a first memory condition, a second memory condition, and a third memory condition, where: the first memory condition is that the temperature deviation obtained by subtracting the actual floor heating mixing water temperature from the target floor heating mixing water temperature is within a first preset range; the second memory condition is that the actual room temperature of the floor heating room in the floor heating area is greater than the difference obtained by subtracting the first control dead band from the target room temperature of the floor heating room; the third memory condition is that the duration of continuously satisfying the first memory condition and the second memory condition reaches a preset duration.

[0008] According to any of the foregoing embodiments of the first aspect of the present invention, in the initial state of the initial opening mapping model, the initial opening of the valve corresponding to each of the target floor heating mixing water temperatures is the maximum opening of the mixing valve.

[0009] According to any of the foregoing embodiments of the first aspect of the present invention, the satisfaction of the preset adjustment opening condition includes that the first opening condition and / or the second opening condition have been satisfied, and the third opening condition has been satisfied, where: the first opening condition is that the actual floor heating mixing water temperature is greater than or equal to the target floor heating mixing water temperature; the second opening condition is that the actual floor heating mixing water temperature is less than the target floor heating mixing water temperature, and the heat pump water outlet temperature of the heat pump is greater than or equal to the target floor heating mixing water temperature; the third opening condition is that the heat pump is in a constant temperature startup state.

[0010] According to any of the foregoing embodiments of the first aspect of the present invention, the start of proportional-integral-derivative adjustment of the opening of the mixing valve includes: adjusting the opening of the mixing valve according to the following formula in each adjustment period: Step = P + I + D; Erro = MixTarget2 - MixT2; P = Kp × Erro; I = I' + Ki × Erro; D = Kd × (Erro - Erro'), where Step is the opening of the mixing valve; P is the proportional adjustment component; I is the integral adjustment component; I' is the integral adjustment component in the previous adjustment period; D is the derivative adjustment component; Erro is the temperature deviation; Erro' is the temperature deviation in the previous adjustment period; MixTarget2 is the target floor heating mixing water temperature; MixT2 is the actual floor heating mixing water temperature; Kp is the preset proportional adjustment parameter; Ki is the preset integral adjustment parameter; Kd is the preset derivative adjustment parameter.

[0011] According to any of the foregoing embodiments of the first aspect of the present invention, the start of the proportional-integral-derivative regulation of the opening degree of the mixing valve further includes: in degrees Celsius, if -x ≤ Erro ≤ x, maintaining the current opening degree of the mixing valve unchanged; in degrees Celsius, if -y ≤ Erro < -x or -x < Erro ≤ y, the number of steps of adjusting the opening degree of the mixing valve within a single adjustment period is less than or equal to the unit adjustment step of the mixing valve; if the heat pump changes to the constant-temperature shutdown state, maintaining the current opening degree of the mixing valve unchanged, where x and y are preset values, and 0 < x < y.

[0012] According to any of the foregoing embodiments of the first aspect of the present invention, the heating system is further configured to supply heat to non-floor-heating areas, and the heating system further includes a non-floor-heating heat exchanger, a floor-heating water pump, and a non-floor-heating water pump. The non-floor-heating heat exchanger includes radiators or fan coils. The floor-heating water pump is connected between the mixing valve and the floor-heating heat exchanger, and the non-floor-heating water pump is connected between the water outlet end of the heat pump and the non-floor-heating heat exchanger. The heating system control method further includes: turning on the non-floor-heating water pump when there is a heating demand in the non-floor-heating area; turning off the non-floor-heating water pump when there is no heating demand in the non-floor-heating area; turning on the floor-heating water pump and the mixing valve when there is a heating demand in the floor-heating area, where the turning on of the floor-heating water pump lags behind the turning on of the mixing valve; turning off the floor-heating water pump and the mixing valve when there is no heating demand in the floor-heating area, where the turning off of the floor-heating water pump precedes the turning off of the mixing valve.

[0013] In a second aspect, an embodiment of the present invention provides a heating system, which includes a controller. The controller includes a memory and at least one processor. Instructions are stored in the memory, and the at least one processor calls the instructions in the memory, so that the controller executes the heating system control method according to any of the foregoing embodiments of the first aspect of the present invention.

[0014] In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, on which instructions are stored. When the instructions are executed by a processor, the heating system control method according to any of the foregoing embodiments of the first aspect of the present invention is implemented.

[0015] According to the heating system control method of the embodiment of the present invention, a preset initial opening degree mapping model is set. When starting the heating of the floor-heating area, the mixing valve is set to the corresponding initial valve opening degree according to the initial opening degree mapping model, so that the initial opening degree of the mixing valve is close to the optimal opening degree, which is convenient for quickly adjusting the mixing valve to the optimal opening degree subsequently, can reduce the system fluctuations caused by water temperature fluctuations or start-stop control, and prolong the service life of the mixing valve and its control components. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the heating system of the present invention;

[0018] Figure 2 It is a flowchart of an embodiment of the control method of the heating system of the present invention;

[0019] Figure 3 It is a schematic hardware structure diagram of the controller in an embodiment of the heating system of the present invention.

[0020] The realization of the object, functional features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0023] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0024] The embodiments of the present invention provide a control method for a heating system. This control method for the heating system is used for a heating system, such as an air conditioning system.

[0025] Figure 1 The figure is a schematic structural diagram of an embodiment of the heating system of the present invention. The heating system is, for example, a central air-conditioning system applied to a heating scenario. The heating system is at least used to supply heat to the floor heating area FA, and the heating system includes a heat pump 110, a floor heating heat exchanger 120, a mixing valve 130, and a floor heating return water pipeline 140. The floor heating heat exchanger 120 is located in the floor heating area FA. The mixing valve 130 is connected between the water outlet end of the heat pump 110 and the floor heating heat exchanger 120. The floor heating return water pipeline 140 connects the floor heating return water end of the floor heating heat exchanger 120 and the mixing valve 130.

[0026] In some embodiments, the heating system is also used to supply heat to the non-floor heating area RA. The heating system may further include a non-floor heating heat exchanger 160, a floor heating water pump 150, and a non-floor heating water pump 170. The non-floor heating heat exchanger 160 includes radiators or air handling units. In this embodiment, the case where the non-floor heating heat exchanger 160 includes radiators is taken as an example for description. The floor heating water pump 150 is connected between the mixing valve 130 and the floor heating heat exchanger 120. The non-floor heating water pump 170 is connected between the water outlet end of the heat pump 110 and the non-floor heating heat exchanger 160.

[0027] In some embodiments, a buffer 190 is provided between the water outlet end of the heat pump 110 and the floor heating heat exchanger 120 and the non-floor heating heat exchanger 160.

[0028] Figure 2 The figure is a flowchart of an embodiment of the control method of the heating system of the present invention. The control method of the heating system may include steps S110 to S140.

[0029] In step S110, a preliminary opening mapping model is preset. The preliminary opening mapping model includes valve preliminary openings corresponding to different floor heating target mixing temperatures respectively. The floor heating target mixing temperature is the target temperature value of the hot water provided by the mixing valve 130 to the floor heating heat exchanger 120.

[0030] The preliminary opening mapping model may be a mapping model in tabular form, which is stored in a non-volatile storage space for calling. In the preliminary opening mapping model, temperature ranges of multiple floor heating target mixing temperatures may be preset, and each temperature range of the floor heating target mixing temperature corresponds to a valve preliminary opening of the mixing valve 130. For example, in the preliminary opening mapping model, the following temperature ranges of floor heating target mixing temperatures are preset: in degrees Celsius, the first range is less than or equal to 24; the second range is greater than 24 and less than or equal to 28; the third range is greater than 28 and less than or equal to 32; the fourth range is greater than 32. Each of the first range to the fourth range corresponds to its own valve preliminary opening.

[0031] In step S120, when it is detected that the floor heating area FA changes from no heating demand to having heating demand, or when it is detected that the floor heating area FA has heating demand after the mixing valve 130 is reset, or when the heat pump 110 changes from the constant temperature shutdown state to the constant temperature startup state, the mixing valve 130 is set to the corresponding initial valve opening according to the initial opening mapping model.

[0032] The mixing valve 130 can be a momentary action mixing valve or a proportional mixing valve. The momentary action mixing valve is controlled by two relay signals of "open wider" and "close smaller", and the opening degree of opening wider or closing smaller is controlled by controlling the energization time of the relay. The proportional mixing valve controls the opening degree through a current signal or a voltage signal, and the valve opening degree has a preset proportional relationship with the magnitude of the voltage signal or the magnitude of the current signal.

[0033] The mixing valve has a total opening degree TotalStep, and this total opening degree TotalStep parameter can be set. The meaning of the total opening degree TotalStep parameter is to divide the maximum opening degree of the mixing valve 130 into several equal parts, and the total opening degree TotalStep is equal to the value of these several equal parts. In this embodiment, the maximum opening degree MaxStep of the mixing valve 130 is the maximum opening degree that the mixing valve 130 can reach during automatic control.

[0034] Optionally, after each power-on, the mixing valve 130 performs a reset. When the mixing valve 130 is a momentary action mixing valve, the mixing valve 130 closes to 0% according to 1.1 times the total opening degree TotalStep, so as to ensure that the mixing valve 130 has been closed to 0%.

[0035] In step S130, when the preset adjustment opening condition is satisfied, the proportional integral derivative adjustment of the opening degree of the mixing valve 130 is started.

[0036] In some embodiments, satisfying the preset adjustment opening condition includes that the first opening condition and / or the second opening condition are satisfied, and the third opening condition is satisfied, where: the first opening condition is that the actual mixing water temperature of the floor heating is greater than or equal to the target mixing water temperature of the floor heating; the second opening condition is that the actual mixing water temperature of the floor heating is less than the target mixing water temperature of the floor heating, and the water outlet temperature of the heat pump 110 of the heat pump 110 is greater than or equal to the target mixing water temperature of the floor heating; the third opening condition is that the heat pump 110 is in the constant temperature startup state.

[0037] When the above preset adjustment opening condition is satisfied, the proportional integral derivative adjustment of the opening degree of the mixing valve 130 is started. In this embodiment, starting the proportional integral derivative adjustment of the opening degree of the mixing valve 130 includes: adjusting the opening degree of the mixing valve 130 according to the following formula in each adjustment cycle:

[0038] Step = P + I + D;

[0039] Error = MixTarget2 - MixT2;

[0040] P = Kp × Error;

[0041] I = I' + Ki × Error;

[0042] D = Kd × (Error - Error'),

[0043] Wherein, Step is the opening degree of the mixing valve 130. In this embodiment, Step is also the target opening degree for adjusting the mixing valve 130 in this adjustment cycle; P is the proportional adjustment component; I is the integral adjustment component; I' is the integral adjustment component in the previous adjustment cycle; D is the differential adjustment component; Error is the temperature deviation; Error' is the temperature deviation in the previous adjustment cycle; MixTarget2 is the target mixing water temperature of the floor heating; MixT2 is the actual mixing water temperature of the floor heating; Kp is the preset proportional adjustment parameter; Ki is the preset integral adjustment parameter; Kd is the preset differential adjustment parameter.

[0044] In one example, the adjustment cycle is to adjust once every two minutes. In one example, Kp is 2, Ki is 0.2, and Kd is 0. In some other embodiments, parameters such as the duration of the adjustment cycle, Kp, Ki, and Kd can be adjusted according to the requirements of the actual heating system.

[0045] In some embodiments, starting the proportional-integral-derivative adjustment of the opening degree of the mixing valve 130 further includes: in degrees Celsius, if -x ≤ Error ≤ x, then keep the current opening degree of the mixing valve 130 unchanged; in degrees Celsius, if -y ≤ Error < -x or -x < Error ≤ y, then the number of steps for adjusting the opening degree of the mixing valve 130 within a single adjustment cycle is less than or equal to the unit adjustment step of the mixing valve 130; if the heat pump 110 changes to the constant temperature shutdown state, then keep the current opening degree of the mixing valve 130 unchanged, where x and y are preset values, and 0 < x < y.

[0046] For example, x is 1, y is 2, and the unit adjustment step is 1% of the maximum opening degree. That is, in degrees Celsius, if -1 ≤ Error ≤ 1, then keep the current opening degree of the mixing valve 130 unchanged; if -2 ≤ Error < -1 or -1 < Error ≤ 2, then the number of steps for adjusting the opening degree of the mixing valve 130 within a single adjustment cycle is less than or equal to 1% of the maximum opening degree of the mixing valve 130. If Error is outside the above range, that is, Error < -2 or Error > 2, there is no limit to the number of steps for adjusting the opening degree of the mixing valve 130 within a single adjustment cycle.

[0047] According to the heating system control method of an embodiment of the present invention, a preset initial opening mapping model is provided. When starting the heating of the floor heating area FA, the mixing valve 130 is set to the corresponding initial valve opening according to the initial opening mapping model, so that the initial opening of the mixing valve 130 is close to the optimal opening, which is convenient for quickly adjusting the mixing valve 130 to the optimal opening subsequently, and can reduce the system fluctuations caused by water temperature fluctuations or start-stop control, and prolong the service life of the mixing valve 130 and its control components.

[0048] In this embodiment, the heating system control method further includes step S140. In step S140, during the proportional-integral-derivative adjustment of the mixing valve 130, if the preset opening memory condition is satisfied, the initial opening mapping model is updated according to the current opening of the mixing valve 130.

[0049] In some embodiments, in the initial state of the initial opening mapping model, the initial valve opening corresponding to each floor heating target mixing temperature is the maximum opening MaxStep of the mixing valve 130.

[0050] In this embodiment, satisfying the preset opening memory condition includes simultaneously satisfying the first memory condition, the second memory condition, and the third memory condition, where: the first memory condition is that the temperature deviation Erro obtained by subtracting the actual floor heating mixing temperature MixT2 from the floor heating target mixing temperature MixTarget2 is within the first preset range; the second memory condition is that the actual room temperature RoomT2 of the floor heating room in the floor heating area FA is greater than the difference obtained by subtracting the first control deadband RDifference2 from the floor heating room target temperature RTarget2; the third memory condition is that the continuous duration of continuously satisfying the first memory condition and the second memory condition reaches the preset duration.

[0051] In an example, the first memory condition is that the temperature deviation Erro obtained by subtracting the actual floor heating mixing temperature MixT2 from the floor heating target mixing temperature MixTarget2 is within 2°C ≤ Erro ≤ 2°C, that is, -2°C ≤ (MixTarget2 - MixT2) ≤ 2°C; the second memory condition is that the actual room temperature RoomT2 of the floor heating room in the floor heating area FA is greater than the difference obtained by subtracting the first control deadband RDifference2 from the floor heating room target temperature RTarget2, that is, RoomT2 > (RTarget2 - RDifference2); the third memory condition is that the continuous duration of continuously satisfying the first memory condition and the second memory condition reaches 30 minutes. If the above preset opening memory condition is satisfied, the initial opening mapping model is updated according to the current opening of the mixing valve 130.

[0052] In the above embodiments, by means of machine learning, the opening degree of the mixing valve 130 is continuously optimized and recorded. After running for a period of time, an initial opening degree mapping model close to the optimal opening degree memory can be formed. When abnormal shutdown is caused by power grid fluctuations, or water temperature fluctuations caused by the constant temperature startup and shutdown of the heat pump 110, or when the heating end changes from no demand to demand, the opening degree of the mixing valve 130 can be adjusted to near the optimal opening degree more quickly, reducing the system fluctuations caused by water temperature fluctuations or start-stop control and improving the stability of the heating system.

[0053] As mentioned above, in some embodiments, the heating system is also used to supply heat to the non-floor heating area RA. The heating system further includes a non-floor heating heat exchanger 160, a floor heating water pump 150, and a non-floor heating water pump 170. The non-floor heating heat exchanger includes radiators or fan coils. The floor heating water pump 150 is connected between the mixing valve 130 and the floor heating heat exchanger 120, and the non-floor heating water pump 170 is connected between the water outlet end of the heat pump 110 and the non-floor heating heat exchanger 160.

[0054] The heating system control method may further include: turning on the non-floor heating water pump 170 when there is a heating demand in the non-floor heating area RA; turning off the non-floor heating water pump 170 when there is no heating demand in the non-floor heating area RA; turning on the floor heating water pump 150 and the mixing valve 130 when there is a heating demand in the floor heating area FA, where the turning on of the floor heating water pump 150 lags behind the turning on of the mixing valve 130; turning off the floor heating water pump 150 and the mixing valve 130 when there is no heating demand in the floor heating area FA, where the turning off of the floor heating water pump 150 is earlier than the turning off of the mixing valve 130.

[0055] After obtaining the following preset or detected parameters: the actual temperature RoomT1 of the non-floor heating room in the non-floor heating area RA, the target temperature RTarget1 of the non-floor heating room, and the second control dead band RDifference1 of the non-floor heating area RA, the following method can be used to determine whether there is a heating demand or no heating demand in the non-floor heating area RA: If RoomT1 > RTarget1, there is no heating demand in the non-floor heating area RA; if RoomT1 ≤ RTarget1 - RDifference1, there is a heating demand in the non-floor heating area RA; if RTarget1 - RDifference1 < RoomT1 ≤ RTarget1, maintain the previous state of having a heating demand or no heating demand unchanged. If it is just powered on and there is no previous state, it is considered to have a heating demand.

[0056] After obtaining the following preset or detected parameters: the actual temperature RoomT2 of the floor heating room in the floor heating area FA, the target temperature RTarget2 of the floor heating room, and the first control dead band RDifference2 of the floor heating area FA, the following method can be used to determine whether the floor heating area FA has a heating demand or no heating demand: If RoomT2 > RTarget2, the floor heating area FA has no heating demand; if RoomT2 ≤ RTarget2 - RDifference2, the floor heating area FA has a heating demand; if RTarget2 - RDifference2 < RoomT2 ≤ RTarget2, maintain the previous state of having a heating demand or no heating demand unchanged. If it is just powered on and there is no previous state, it is considered to have a heating demand.

[0057] An embodiment of the present invention provides a heating system, which is, for example, the heating system of any of the previous embodiments. In addition, the heating system further includes a controller.

[0058] Figure 3 It is a schematic diagram of the hardware structure of the controller in an embodiment of the heating system of the present invention. The controller includes a memory 191 and at least one processor 192. Instructions are stored in the memory 191, and the at least one processor 192 calls the instructions in the memory 191 to enable the controller to execute the control method of the heating system according to any of the previous embodiments of the present invention.

[0059] Specifically, the above-mentioned processor 192 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured as one or more integrated circuits for implementing the embodiments of the present invention.

[0060] The memory 191 may include a mass memory for data or instructions. By way of example and not limitation, the memory 191 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. In a suitable case, the memory 191 may include removable or non-removable (or fixed) media. In a suitable case, the memory 191 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, the memory 191 is a non-volatile solid-state memory. In a particular embodiment, the memory 191 includes a read-only memory (ROM). In a suitable case, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0061] In one example, the controller of the heating system may further include a communication interface 193 and a bus 194. The processor 192, the memory 191, and the communication interface 193 are connected through the bus 194 to complete communication with each other.

[0062] The communication interface 193 is mainly used to implement communication between the various modules, devices, units, and / or devices in the embodiments of the present invention.

[0063] The bus 194 includes hardware, software, or both, and couples the components of the online data flow meter charging device to each other. By way of example and not limitation, the bus may include an accelerated graphics port (AGP) or other graphics bus, an enhanced industry standard architecture (EISA) bus, a front-side bus (FSB), a hyperTransport (HT) interconnect, an industry standard architecture (ISA) bus, an InfiniBand interconnect, a low pin count (LPC) bus, a memory 191 bus, a microchannel architecture (MCA) bus, a peripheral component interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a serial advanced technology attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable buses, or a combination of two or more of these. In a suitable case, the bus 194 may include one or more buses. Although the embodiments of the present invention describe and illustrate specific buses, the present invention contemplates any suitable bus or interconnect.

[0064] In addition, in combination with the control method of the heating system in the above embodiments, the embodiments of the present invention may provide a computer-readable storage medium to implement. Instructions are stored on the computer-readable storage medium, and when the instructions are executed by a processor, any one of the control methods of the heating system in the above embodiments is implemented.

[0065] The present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted herein. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present invention.

[0066] The functional blocks shown in the above structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, and so on. When implemented in software, the elements of the present invention are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted over a transmission medium or communication link via a data signal carried in a carrier wave. A "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical discs, hard disks, fiber optic media, radio frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.

[0067] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, can be different from the order in the embodiments, or several steps can be executed simultaneously.

[0068] As described above, the above is only the specific implementation manner of the present invention. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be repeated herein. It should be understood that the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A control method for a heating system, which is used for a heating system, characterized in that, The heating system is at least used for heating the floor heating area. The heating system includes a heat pump, a floor heating heat exchanger, a mixing valve, and a floor heating return water pipeline. The floor heating heat exchanger is located in the floor heating area. The mixing valve is connected between the water outlet end of the heat pump and the floor heating heat exchanger. The floor heating return water pipeline connects the floor heating return water end of the floor heating heat exchanger to the mixing valve. The control method of the heating system includes: Presetting an initial opening mapping model, which includes valve initial openings corresponding to different target floor heating mixing temperatures respectively. The target floor heating mixing temperature is the target temperature value of the hot water provided by the mixing valve to the floor heating heat exchanger. When it is detected that the floor heating area changes from no heating demand to having heating demand, or when it is detected that the floor heating area has heating demand after the mixing valve is reset, or when the heat pump changes from a constant temperature shutdown state to a constant temperature startup state, set the mixing valve to the corresponding valve initial opening according to the initial opening mapping model. When the preset adjustment opening condition is met, start proportional-integral-derivative adjustment of the opening of the mixing valve. During the process of proportional-integral-derivative adjustment of the mixing valve, if the preset opening memory condition is met, update the initial opening mapping model according to the current opening of the mixing valve. The satisfaction of the preset opening memory condition includes simultaneously satisfying the first memory condition, the second memory condition, and the third memory condition, where: The first memory condition is that the temperature deviation obtained by subtracting the actual floor heating mixing temperature from the target floor heating mixing temperature is within the first preset range. The second memory condition is that the actual temperature of the floor heating room in the floor heating area is greater than the difference obtained by subtracting the first control dead band from the target temperature of the floor heating room. The third memory condition is that the continuous duration of continuously satisfying the first memory condition and the second memory condition reaches the preset duration.

2. The control method of the heating system according to claim 1, wherein In the initial state of the initial opening mapping model, the valve initial openings corresponding to the respective target floor heating mixing temperatures are the maximum opening of the mixing valve.

3. The control method of the heating system according to claim 1, wherein The satisfaction of the preset adjustment opening condition includes that the first opening condition and / or the second opening condition have been met, and the third opening condition has been met, where: The first opening condition is that the actual floor heating mixing temperature is greater than or equal to the target floor heating mixing temperature. The second opening condition is that the actual floor heating mixing temperature is less than the target floor heating mixing temperature, and the heat pump water outlet temperature of the heat pump is greater than or equal to the target floor heating mixing temperature. The third opening condition is that the heat pump is in a constant temperature startup state.

4. The control method of the heating system according to claim 1, characterized in that, The start of proportional-integral-derivative adjustment of the opening of the mixing valve includes: Adjust the opening of the mixing valve according to the following formula in each adjustment cycle: Step = P + I + D; Erro = MixTarget2 - MixT2; P = Kp × Erro; I = I’ + Ki × Erro; D = Kd × (Erro - Erro’), Among them, Step is the opening degree of the mixing valve; P is the proportional adjustment component; I is the integral adjustment component; I’ is the integral adjustment component in the previous adjustment cycle; D is the differential adjustment component; Erro is the temperature deviation; Erro’ is the temperature deviation in the previous adjustment cycle; MixTarget2 is the target mixing water temperature of the floor heating; MixT2 is the actual mixing water temperature of the floor heating; Kp is the preset proportional adjustment parameter; Ki is the preset integral adjustment parameter; Kd is the preset differential adjustment parameter.

5. The control method of the heating system according to claim 4, wherein The start of the proportional integral differential adjustment of the opening degree of the mixing valve further includes: In degrees Celsius, if -x ≤ Erro ≤ x, then keep the current opening degree of the mixing valve unchanged; In degrees Celsius, if -y ≤ Erro < -x or -x < Erro ≤ y, then the number of steps of adjusting the opening degree of the mixing valve within a single adjustment cycle is less than or equal to the unit adjustment step of the mixing valve; If the heat pump changes to the constant temperature shutdown state, then keep the current opening degree of the mixing valve unchanged, wherein, x and y are preset values, and 0 < x < y.

6. The control method of the heating system according to claim 1, characterized in that, The heating system is also used to supply heat to non-floor heating areas. The heating system further includes a non-floor heating heat exchanger, a floor heating water pump, and a non-floor heating water pump. The non-floor heating heat exchanger includes radiators or air handling units. The floor heating water pump is connected between the mixing valve and the floor heating heat exchanger. The non-floor heating water pump is connected between the water outlet end of the heat pump and the non-floor heating heat exchanger. The control method of the heating system further includes: Turn on the non-floor heating water pump when there is a heating demand in the non-floor heating area; Turn off the non-floor heating water pump when there is no heating demand in the non-floor heating area; Turn on the floor heating water pump and the mixing valve when there is a heating demand in the floor heating area, wherein the turning on of the floor heating water pump lags behind the turning on of the mixing valve; Turn off the floor heating water pump and the mixing valve when there is no heating demand in the floor heating area, wherein the turning off of the floor heating water pump is ahead of the turning off of the mixing valve.

7. A heating system, characterized in that, The heating system includes a controller, and the controller includes a memory and at least one processor. Instructions are stored in the memory. The at least one processor calls the instructions in the memory, so that the controller executes the control method of the heating system according to any one of claims 1 to 6.

8. A computer-readable storage medium having instructions stored thereon, characterized in that, When the instructions are executed by the processor, the control method of the heating system according to any one of claims 1 to 6 is realized.

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