Heating equipment control method and control device

Abstract

The present invention provides a heating equipment control method and control device, relating to the field of heat pump technology, and applied to heating equipment including multiple heat pump units. The method includes: obtaining an outdoor ambient temperature, an operating set temperature, and an initial actual temperature, and determining an initial target operating temperature difference based on the operating set temperature and the initial actual temperature; determining the number of units to be started based on the outdoor ambient temperature, the initial target operating temperature difference, and a preset startup rule; and operating target heat pump units corresponding to the number of units to be started among the multiple heat pump units, wherein the target heat pump units are loaded to a target operating frequency after starting at the startup frequency and maintained operating at the target operating frequency, the target operating frequency being the operating frequency with the highest energy conversion efficiency for the target heat pump units. The heating equipment control method provided by the present invention can improve the energy conversion rate of the heating equipment, thereby optimizing the energy efficiency of the entire heating equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat pumps, and in particular relates to a heating equipment control method and a control device. Background Art

[0002] Heat pumps use a reverse cycle to force heat from a low-temperature object to a high-temperature object. They consume only a small amount of reverse cycle net work to produce a large amount of heat, effectively utilizing otherwise unusable, low-grade thermal energy to achieve energy savings. An air-source heat pump is an energy-saving device that uses high-level energy to move heat from a low-level heat source, air, to a higher-level heat source. It is a form of heat pump.

[0003] Existing modular control systems for air-source heat pump heaters typically start each unit one by one, resulting in long startup times and slow temperature rises for the entire heating system. Alternatively, some units are started first and loaded to maximum capacity before new units are started. This can result in some units operating at high loads while others are not, causing significant wear and tear on the units and poor energy efficiency.

[0004] Regardless of which of the above methods is adopted, there is always the problem that the energy efficiency of the heating equipment is not in the optimal state. Summary of the Invention

[0005] The present invention provides a heating equipment control method and a control device to solve the problem in the prior art that the working energy efficiency of the heating equipment is not in an optimal state.

[0006] One aspect of the present invention provides a heating equipment control method, which is applied to a heating equipment, wherein the heating equipment includes a plurality of heat pump units, and the method includes:

[0007] Obtaining the outdoor ambient temperature, the operating set temperature, and the initial actual temperature, and determining an initial target operating temperature difference based on the operating set temperature and the initial actual temperature;

[0008] Determine the number of units to be started according to the outdoor ambient temperature, the initial target operating temperature difference and a preset startup rule;

[0009] Run target heat pump units corresponding to the number of units to be started among the multiple heat pump units, wherein the target heat pump units are loaded to a target operating frequency after being started at a starting frequency, and maintain operation at the target operating frequency, and the target operating frequency is the operating frequency with the highest energy conversion efficiency of the target heat pump units.

[0010] The heating equipment control method as described above may, optionally, further comprise, after operating the target heat pump units corresponding to the number of units to be started among the plurality of heat pump units:

[0011] Obtaining a water temperature change rate and a current actual temperature of the target heat pump unit, and determining a current target operating temperature difference based on the operating set temperature and the current actual temperature, wherein the water temperature change rate is used to represent a temperature change of the liquid in the target heat pump unit within a preset time period;

[0012] Determining an operating frequency adjustment parameter according to the water temperature change rate, the current target operating temperature difference, and a preset adjustment rule;

[0013] The operating states of the multiple heat pump units are adjusted according to the operating frequency adjustment parameters.

[0014] In the heating equipment control method described above, optionally, if the operating frequency adjustment parameter corresponds to a frequency loading operation, adjusting the operating states of the plurality of heat pump units according to the operating frequency adjustment parameter includes:

[0015] When the target heat pump unit is part of the multiple heat pump units, the standby heat pump unit is started according to the operating frequency adjustment parameter, wherein the standby heat pump unit is a unit that has not been started among the multiple heat pump units currently, and the target heat pump unit continues to operate at the target operating frequency; or, when the target heat pump unit is all of the multiple heat pump units, the operating frequency of the target heat pump unit is increased according to the operating frequency adjustment parameter.

[0016] In the heating equipment control method described above, optionally, if the operating frequency adjustment parameter corresponds to a frequency load shedding operation, adjusting the operating states of the plurality of heat pump units according to the operating frequency adjustment parameter includes:

[0017] When the current operating frequency of the target heat pump unit is higher than the target operating frequency, the operating frequency of the target heat pump unit is reduced according to the operating frequency adjustment parameter; or, when the current operating frequency of the target heat pump unit is the target operating frequency, part of the target heat pump unit is shut down according to the operating frequency adjustment parameter.

[0018] The heating equipment control method as described above may, optionally, further comprise:

[0019] If it is determined that the target heat pump unit currently needs to be adjusted for safety assurance, the working state of the target heat pump unit is adjusted according to the safety working adjustment parameters, wherein the safety working adjustment parameters are used to adapt to the working frequency adjustment requirements of the safety assurance adjustment, and the safety assurance adjustment is used to ensure that the target heat pump unit is in a safe working state.

[0020] The heating equipment control method as described above may, optionally, further comprise: after adjusting the working states of the plurality of heat pump units according to the working frequency adjustment parameter:

[0021] An adjusted operating frequency of the target heat pump unit is determined, wherein the adjusted operating frequency is different from a preset shielding frequency.

[0022] Another aspect of the present invention provides a heating equipment control device, comprising:

[0023] An acquisition module is used to acquire the outdoor ambient temperature, the working setting temperature and the initial actual temperature, and determine an initial target working temperature difference according to the working setting temperature and the initial actual temperature;

[0024] a determination module, configured to determine the number of units to be started according to the outdoor ambient temperature, the initial target operating temperature difference, and a preset startup rule;

[0025] A control module is used to operate target heat pump units corresponding to the number of units to be started among multiple heat pump units, the heating equipment includes the multiple heat pump units, and the target heat pump units are loaded to the target operating frequency after being started at the starting frequency, and maintain operation at the target operating frequency. The target operating frequency is the operating frequency with the highest energy conversion efficiency of the target heat pump units.

[0026] The heating equipment control device as described above, optionally, after running the target heat pump units corresponding to the number of the units to be started among the plurality of heat pump units,

[0027] an acquisition module, further configured to acquire a water temperature change rate and a current actual temperature of the target heat pump unit, and determine a current target operating temperature difference based on the operating set temperature and the current actual temperature, wherein the water temperature change rate is used to characterize a temperature change of the liquid in the target heat pump unit within a preset time period;

[0028] The determination module is further configured to determine an operating frequency adjustment parameter according to the water temperature change rate, the current target operating temperature difference, and a preset adjustment rule;

[0029] The control module is further configured to adjust the working states of the plurality of heat pump units according to the working frequency adjustment parameters.

[0030] As described above, the heating equipment control device, optionally, if the operating frequency adjustment parameter corresponds to a frequency loading operation, the control module is also used to start the to-be-selected heat pump group according to the operating frequency adjustment parameter when the target heat pump group is part of the multiple heat pump groups, wherein the to-be-selected heat pump group is a group that has not been started among the multiple heat pump groups, and the target heat pump group continues to operate at the target operating frequency; or, when the target heat pump group is all of the multiple heat pump groups, the operating frequency of the target heat pump group is increased according to the operating frequency adjustment parameter.

[0031] As described above, the heating equipment control device, optionally, if the operating frequency adjustment parameter corresponds to a frequency load shedding operation, the control module is further used to reduce the operating frequency of the target heat pump unit according to the operating frequency adjustment parameter when the current operating frequency of the target heat pump unit is higher than the target operating frequency; or, when the current operating frequency of the target heat pump unit is the target operating frequency, shut down part of the target heat pump unit according to the operating frequency adjustment parameter.

[0032] The heating equipment control device as described above may optionally further include: an adjustment module for adjusting the working state of the target heat pump unit according to the safe working adjustment parameters if it is determined that the target heat pump unit currently needs to be adjusted for safety before adjusting the working state of the multiple heat pump units according to the working frequency adjustment parameters, wherein the safe working adjustment parameters are used to adapt to the working frequency adjustment requirements of the safety adjustment, and the safety adjustment is used to ensure that the target heat pump unit is in a safe working state.

[0033] The heating equipment control device as described above may optionally further include: a shielding module, which is used to determine the adjusted operating frequency of the target heat pump unit after the operating states of the multiple heat pump units are adjusted according to the operating frequency adjustment parameters, wherein the adjusted operating frequency is different from the preset shielding frequency.

[0034] Another aspect of the present invention provides an electronic device, including a processor and a memory communicatively connected to the processor.

[0035] The memory stores computer-executable instructions;

[0036] The processor executes the computer-executable instructions stored in the memory to implement any of the aforementioned methods.

[0037] Another aspect of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement any of the methods described above.

[0038] Another aspect of the present invention further provides a computer program product, comprising a computer program, which implements any of the aforementioned methods when executed by a processor.

[0039] The heating equipment control method and control device provided by the present invention determine the number of units to be started by using the outdoor ambient temperature, the initial target operating temperature difference and the preset starting rules, and load the target heat pump units corresponding to the number of units to be started to the target operating frequency after starting at the starting frequency. The target operating frequency is the operating frequency with the highest energy conversion efficiency of the target heat pump unit. The outdoor ambient temperature, the working setting temperature and the initial actual temperature are first obtained, and the initial target operating temperature difference is determined based on the working setting temperature and the initial actual temperature. The number of units to be started is then determined based on the outdoor ambient temperature, the initial target operating temperature difference and the preset starting rules. The number of units to be started determined according to this method is more accurate, can meet the heating demand, and reach the working setting temperature as soon as possible. At the same time, the target heat pump units are loaded to the target operating frequency after starting at the starting frequency, and are maintained at the target operating frequency, so that all the turned-on target heat pump units operate at the operating frequency with the highest energy conversion efficiency, thereby improving the energy conversion rate of the entire heating equipment and optimizing the energy efficiency of the entire heating equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the present invention is not limited to the specific embodiments described below.

[0041] Figure 1 A schematic flow chart of a heating device control method provided in Example 1 of the present invention;

[0042] Figure 2 This is a graph showing the relationship between the outdoor ambient temperature, the initial target operating temperature difference, the starting coefficient, and the number of units to be started;

[0043] Figure 3 A schematic flow chart of a heating device control method according to a second embodiment of the present invention;

[0044] Figure 4 This is a corresponding relationship diagram of the water temperature change rate, the current target operating temperature difference, the adjustment coefficient and the operating frequency adjustment parameter;

[0045] Figure 5A schematic structural diagram of a heating equipment control device provided in a third embodiment of the present invention;

[0046] Figure 6 This is a structural diagram of an electronic device provided in Example 4 of the present invention. DETAILED DESCRIPTION

[0047] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the present invention is not limited to the specific embodiments described below.

[0048] A heat pump heater is a novel energy-saving device that transfers heat from a low-temperature area to a high-temperature area. It typically consists of an evaporator, compressor, condenser, and throttling device, all controlled by a central control unit. It utilizes a small amount of low-temperature energy, absorbing and compressing it to concentrate the low-temperature, dispersed heat in a specific environment, transforming it into useful thermal energy. Therefore, it is widely used in production and daily life.

[0049] However, the current modular control of heat pump heaters usually adopts the method of starting each unit one by one, or starting some units first and loading them to the maximum load before starting other units. This not only causes great wear and tear on the heat pump heaters, but also the heating equipment does not operate at the optimal energy efficiency.

[0050] In order to improve the overall operating energy efficiency of heating equipment, the present invention provides a heating equipment control method and control device, which obtains the outdoor ambient temperature, the working set temperature, and the initial actual temperature, and determines the number of initial starting units in combination with preset starting rules, and maintains them operating at the operating frequency with the highest energy conversion efficiency.

[0051] The following is a detailed introduction to the heating equipment control method and control device provided in this embodiment.

[0052] Example 1

[0053] Figure 1 This is a flow chart of a heating equipment control method provided in Example 1 of the present invention.

[0054] Reference Figure 1 As shown, this embodiment provides a heating equipment control method. The execution subject of this embodiment may be a central control host of the heating equipment. The method is applied to the heating equipment, wherein the heating equipment includes multiple heat pump units. The method includes:

[0055] S101: Obtain the outdoor ambient temperature, the working setting temperature, and the initial actual temperature, and determine an initial target working temperature difference according to the working setting temperature and the initial actual temperature.

[0056] Specifically, the central control host obtains the outdoor ambient temperature, the working setting temperature and the initial actual temperature according to the power-on instruction, and calculates the temperature difference according to the working setting temperature and the initial actual temperature. The temperature difference is the initial target working temperature difference.

[0057] The actual temperature can be either the indoor ambient temperature or the temperature of the heating circulating water. Conventional air conditioners typically use hot air for heating, so the indoor ambient temperature is often used as the control parameter. Conventional air source heat pumps, with multiple modular heat pump units, typically use circulating water, heating the water to a high temperature before pumping it into the user's indoor space. After cooling, it returns to the heat pump unit for reheating, thus continuing the cycle. Therefore, the circulating water temperature is used for control.

[0058] Among them, the power-on command is a command issued when there is a demand for heating. This action can be issued independently by the person in need, or it can be a power-on command issued by a pre-set timer power-on command. This application does not impose specific restrictions.

[0059] S102: Determine the number of units to be started according to the outdoor ambient temperature, the initial target operating temperature difference, and a preset startup rule.

[0060] Specifically, after the central control host determines the initial target operating temperature difference, it determines the number of units to be started in combination with the outdoor ambient temperature obtained in step S101 and the pre-set startup rules.

[0061] The startup rules can be set based on experience. For example, when the outdoor ambient temperature is low and the difference between the set operating temperature and the initial actual temperature is large, all installed units are determined to be ready for startup. When the outdoor ambient temperature is high and the difference between the set operating temperature and the initial actual temperature is small, only some units, for example, one-third of the total number of units, are determined to be ready for startup.

[0062] Optionally, the startup rules can also be set up as a corresponding relationship based on the outdoor ambient temperature, the initial target operating temperature difference, and the startup coefficient, which can be pre-stored in the central control host and directly retrieved when used. For example, it can be set in the form of a table to determine the corresponding relationship between the outdoor ambient temperature, the initial target operating temperature difference, the startup coefficient and the number of units to be started. For specific corresponding relationships, see Figure 2 , Figure 2 This is a corresponding relationship diagram among outdoor ambient temperature, initial target operating temperature difference, starting coefficient and the number of units to be started.

[0063] like Figure 2As shown in the figure, T1 represents the outdoor ambient temperature, ΔT1 represents the initial target operating temperature difference, N represents the total number of heating units installed, and the numbers 0.3 / 0.4 / 0.5 / 0.6 / 0.7 / 0.8 / 0.9 / 1 represent the start-up coefficient. Start-up coefficient * N is the number of units to be started. The value after start-up coefficient * N can be rounded up or down to ensure that the number of units to be started is ≥ 1.

[0064] in, Figure 2 The values of the outdoor ambient temperature T1, the initial target operating temperature difference ΔT1, and the starting coefficient can be adjusted according to actual needs. Figure 2 This is just one possible implementation method and is not limited in this application.

[0065] S103. Operating target heat pump units corresponding to the number of units to be started among the multiple heat pump units, wherein the target heat pump units are loaded to a target operating frequency after being started at the starting frequency, and maintained operating at the target operating frequency, where the target operating frequency is the operating frequency with the highest energy conversion efficiency of the target heat pump units.

[0066] Specifically, after determining the number of units to be started, the central control host sends a start-up instruction to the target heat pump units corresponding to the number of units to be started among the multiple heat pump units. Specifically, which units are started as target heat pump units is not restricted in this application; it is sufficient that the number of target heat pump units started is equal to the number of units to be started. For example, a start-up instruction can be sent based on the principle of equal usage time to start units with relatively short usage time, so that the usage time of all units is as equal as possible.

[0067] In some embodiments, when there are faulty shutdown units and the sum of the number of faulty shutdown units and the number of units to be started is greater than the total number of units installed in the heating equipment, the actual number of target heat pump units started may be less than the number of units to be started. At this time, all non-faulty heat pump units are turned on as target heat pump units.

[0068] When the target heat pump unit receives the start command, it starts at the start frequency, loads to the target operating frequency, and maintains operation at this target operating frequency. The start frequency is the minimum operating frequency of the target heat pump unit, at which it can operate. The target operating frequency is the operating frequency at which the target heat pump unit achieves the highest energy conversion efficiency, achieving the highest energy conversion rate and optimal operating condition.

[0069] Optionally, after determining the number of units to be started, the target heat pump unit receives a start-up instruction and starts at the start-up frequency. The determined number of target heat pump units can be started sequentially or simultaneously, and this application does not impose any restrictions. Specifically, when starting sequentially, the startup time of the entire heating device is longer and the initial heating effect is relatively poor, but the circuit pressure is small and the circuit requirements are not high. When starting simultaneously, the startup time of the entire heating device is shorter and the initial heating effect is relatively good, but the circuit pressure is large and the circuit requirements are high.

[0070] The heating equipment control method provided in this embodiment determines the number of units to be started by using the outdoor ambient temperature, the initial target operating temperature difference and the preset starting rules, and loads the target heat pump units corresponding to the number of units to be started to the target operating frequency after starting at the starting frequency. The target operating frequency is the operating frequency with the highest energy conversion efficiency of the target heat pump unit. This embodiment first obtains the outdoor ambient temperature, the working setting temperature and the initial actual temperature, and determines the initial target working temperature difference based on the working setting temperature and the initial actual temperature, and then determines the number of units to be started based on the outdoor ambient temperature, the initial target working temperature difference and the preset starting rules. The number of units to be started determined according to this method is more accurate, can meet the heating demand, and reach the working setting temperature as soon as possible. At the same time, the target heat pump units are loaded to the target operating frequency after starting at the starting frequency, and are maintained at the target operating frequency, so that all the turned-on target heat pump units operate at the operating frequency with the highest energy conversion efficiency, thereby improving the energy conversion rate of the entire heating equipment and optimizing the energy efficiency of the entire heating equipment.

[0071] Example 2

[0072] Figure 3 This is a flow chart of a heating equipment control method provided in the second embodiment of the present invention.

[0073] Reference Figure 3 As shown, this embodiment provides a heating equipment control method. The execution subject of this embodiment may be a central control host of the heating equipment. The method is applied to the heating equipment, wherein the heating equipment includes multiple heat pump units. The method includes:

[0074] S301: Obtain the outdoor ambient temperature, the working setting temperature, and the initial actual temperature, and determine an initial target working temperature difference according to the working setting temperature and the initial actual temperature.

[0075] S302: Determine the number of units to be started according to the outdoor ambient temperature, the initial target operating temperature difference, and a preset startup rule.

[0076] S303: operate target heat pump units corresponding to the number of units to be started among the multiple heat pump units.

[0077] Among them, the implementation method of steps S301-S303 is the same as Figure 1 The implementation method of the illustrated embodiment is similar and will not be described again here.

[0078] Optionally, after running the target heat pump units corresponding to the number of units to be started in the plurality of heat pump units in step S303, the method further includes:

[0079] S304: Obtain the water temperature change rate and current actual temperature of the target heat pump unit, and determine the current target operating temperature difference according to the operating set temperature and the current actual temperature.

[0080] The water temperature change rate is used to characterize the temperature change of the liquid in the target heat pump unit within a preset time period.

[0081] Specifically, the central control host obtains the water temperature change rate of the currently running target heat pump unit, where the water temperature change rate refers to the temperature change of the liquid in the heat pump unit within a preset time period. The water temperature change rate is calculated based on the temperature difference before and after a fixed time period. The fixed time period can be flexibly set as needed. The shorter the time period, the higher the measurement accuracy. This application does not limit the value of the fixed time period. For example, the temperature of the liquid in the heat pump unit is measured every 30 seconds, the temperature difference is calculated, and the temperature difference is divided by the time to obtain the water temperature change rate within 30 seconds.

[0082] At the same time, the central control host obtains the current actual temperature and subtracts the current actual temperature from the set operating temperature to calculate the current target operating temperature difference. Because the actual temperature is constantly changing, the current target operating temperature difference also changes. For example, the current actual temperature is obtained every 30 seconds, and the current target operating temperature difference for that 30 seconds is calculated by subtracting the current actual temperature from the set operating temperature.

[0083] Among them, if the current target operating temperature difference is greater than zero, it means that the current actual temperature has not reached the working set temperature, that is, the heating capacity is less than the heating demand, and the heating capacity needs to be increased to meet the heating demand.

[0084] If the current target operating temperature difference is zero, it means that the current actual temperature is equal to the working set temperature, that is, the heating amount is equal to the heat demand, and the heating equipment can be kept running in the current state.

[0085] If the current target operating temperature difference is less than zero, it means that the current actual temperature has exceeded the working set temperature, that is, the heating amount is greater than the heat demand, and the heating amount needs to be reduced to avoid waste.

[0086] S305: Determine an operating frequency adjustment parameter according to the water temperature change rate, the current target operating temperature difference, and a preset adjustment rule.

[0087] Specifically, the operating frequency adjustment parameter of the target heat pump unit is determined according to the water temperature change rate obtained above and the current target operating temperature difference, as well as a preset adjustment rule.

[0088] The preset adjustment rules can be set based on experience. For example, when the water temperature change rate is small and the current target operating temperature difference is also small, the operating frequency adjustment parameter is set to be small; when the water temperature change rate is large and the current target operating temperature difference is also large, the operating frequency adjustment parameter is set to be large, to meet heat demand or avoid waste.

[0089] Optionally, the preset adjustment rules can also be set as a corresponding relationship based on the water temperature change rate, the current target operating temperature difference, and the adjustment coefficient, which can be pre-stored in the central control host and directly retrieved when used. For example, it can be set in the form of a table to determine the corresponding relationship between the water temperature change rate, the current target operating temperature difference, the adjustment coefficient and the operating frequency adjustment parameter. For specific corresponding relationships, see Figure 4 , Figure 4 This is a corresponding relationship diagram of the water temperature change rate, the current target operating temperature difference, the adjustment coefficient and the operating frequency adjustment parameter.

[0090] like Figure 4 As shown in the figure, dT / dt represents the water temperature change rate, ΔT2 represents the current target operating temperature difference, and n represents the target number of heat pump units. The parameters -1 / 0 / 1 / 2 / 3 and the adjustment factor *n represent the operating frequency adjustment parameters for the entire heating system. The operating frequency adjustment parameters are applied to each heat pump unit in an averaged manner, with 1 as the minimum unit.

[0091] in, Figure 4 The water temperature change rate dT / dt, the current target operating temperature difference ΔT2, the adjustment coefficient, and the parameter values can all be adjusted according to actual needs. Table 2 is only one possible implementation method and this application does not impose any specific restrictions.

[0092] S306: Adjust the working states of the multiple heat pump units according to the working frequency adjustment parameters.

[0093] Specifically, if the operating frequency adjustment parameter is a negative number, it means that the operating frequency needs to be reduced, which corresponds to a frequency unloading operation; if the operating frequency adjustment parameter is a positive number, it means that the operating frequency needs to be increased, which corresponds to a frequency loading operation; if the operating frequency adjustment parameter is zero, it means that there is no need to increase or decrease the frequency, and it can operate at the current operating frequency.

[0094] Optionally, if the operating frequency adjustment parameter corresponds to a frequency loading operation, adjusting the operating states of the plurality of heat pump units according to the operating frequency adjustment parameter includes:

[0095] S3061. When the target heat pump unit is part of the multiple heat pump units, the standby heat pump unit is started according to the operating frequency adjustment parameter, wherein the standby heat pump unit is a unit that has not been started among the current multiple heat pump units, and the target heat pump unit continues to operate at the target operating frequency; or, when the target heat pump unit is all the units among the multiple heat pump units, the operating frequency of the target heat pump unit is increased according to the operating frequency adjustment parameter.

[0096] Specifically, after determining the operating frequency adjustment parameters based on the water temperature change rate, the current target operating temperature difference, and the preset adjustment rules, determine whether all the multiple heat pump units under normal operating conditions of the heating equipment are turned on. If the multiple heat pump units are not all turned on, that is, the target heat pump units that have been turned on are only part of the multiple heat pump units, the operating frequency adjustment parameters are accumulated. When the accumulated value of the operating frequency adjustment parameters reaches the starting frequency of the heat pump unit (that is, the minimum operating frequency), the heat pump unit to be selected is turned on. Among them, the heat pump unit to be selected is the unit that has not been started among the current multiple heat pump units. If the frequency loading operation is still required at this time, the selected heat pump unit that has been turned on will be loaded to the target operating frequency first, and then the other unstarted units will be started until all units are started and maintained at the target operating frequency.

[0097] If all heat pump units are turned on, that is, the target heat pump units are all of the units in the target heat pump units and are already operating at the target operating frequency, the operating frequency of the target heat pump units will be increased directly according to the operating frequency adjustment parameter, without the need to accumulate the operating frequency adjustment parameter. If the operating frequency adjustment parameter is less than the target number of heat pump units, the operating frequency of the target heat pump units with relatively low operating frequencies and relatively short operating times will be prioritized for increase. If the operating frequency adjustment parameter is greater than the target number of heat pump units, the operating frequency adjustment parameter will be averaged across all target heat pump units, and the operating frequency of each target heat pump unit will be increased.

[0098] Optionally, if the operating frequency adjustment parameter corresponds to a frequency load shedding operation, adjusting the operating states of the plurality of heat pump units according to the operating frequency adjustment parameter includes:

[0099] S3062. When the current operating frequency of the target heat pump unit is higher than the target operating frequency, the operating frequency of the target heat pump unit is reduced according to the operating frequency adjustment parameters; or, when the current operating frequency of the target heat pump unit is the target operating frequency, some of the target heat pump units are shut down according to the operating frequency adjustment parameters.

[0100] Specifically, after determining the operating frequency adjustment parameter based on the water temperature change rate, the current target operating temperature difference, and preset adjustment rules, it is determined whether the current operating frequency of the target heat pump unit is higher than the target operating frequency. If the current operating frequency of the target heat pump unit is higher than the target operating frequency, the operating frequency of the target heat pump unit is reduced according to the operating frequency adjustment parameter. If the operating frequency adjustment parameter is less than the target number of heat pump units, target heat pump units with relatively high operating frequencies and relatively long operating times are preferentially selected to reduce their operating frequencies. If the operating frequency adjustment parameter is greater than the target number of heat pump units, the operating frequency adjustment parameter is averaged across each target heat pump unit, and the operating frequency of each target heat pump unit is reduced.

[0101] If the current operating frequency of the target heat pump units is the target operating frequency, some of the target heat pump units are shut down according to the operating frequency adjustment parameter. Specifically, the specific value of the operating frequency adjustment parameter can be used to determine whether to directly shut down some of the target heat pump units, reduce the operating frequency of some of the target heat pump units to the minimum operating frequency, or perform both operations simultaneously.

[0102] Optionally, before adjusting the working states of the plurality of heat pump units according to the working frequency adjustment parameters, the method further includes:

[0103] If it is determined that the target heat pump unit currently needs to be adjusted for safety assurance, the working state of the target heat pump unit is adjusted according to the safety working adjustment parameters, where the safety working adjustment parameters are used to adapt to the working frequency adjustment requirements of the safety assurance adjustment, and the safety assurance adjustment is used to ensure that the target heat pump unit is in a safe working state.

[0104] Specifically, in order to ensure that the heat pump unit is in a safe working state, it is necessary to determine whether the target heat pump unit currently needs to be adjusted for safety. If it is determined that the target heat pump unit currently needs to be adjusted for safety, the working state of the target heat pump unit is adjusted according to the safety working adjustment parameters, wherein the safety working adjustment parameters are used to adapt to the working frequency adjustment requirements of the safety adjustment. It is understandable that the heat pump unit has a maximum operating frequency. Exceeding this frequency will cause damage to the heat pump unit, and it is easy to cause safety problems such as circuit short circuit and fire, which is not conducive to safe use. Therefore, before adjusting the working states of multiple heat pump units according to the working frequency adjustment parameters, it is necessary to adjust the working state of the target heat pump unit according to the safety working adjustment parameters to ensure that the heat pump unit operates at a safe working frequency.

[0105] Optionally, after adjusting the working states of the plurality of heat pump units according to the working frequency adjustment parameters, the method further includes:

[0106] An adjusted operating frequency of the target heat pump unit is determined, wherein the adjusted operating frequency is different from a preset shielding frequency.

[0107] Specifically, when adjusting the operating status of multiple heat pump units based on operating frequency adjustment parameters, care should be taken to avoid the frequency shielding points of the heat pump units, ensuring that the adjusted operating frequency is different from the preset shielding frequency to ensure normal operation of the heat pump units. Furthermore, when determining the adjusted operating frequency of the target heat pump unit, attention should be paid to balancing the heating capacity with the heat demand.

[0108] For example, if the operating frequency of each target heat pump unit is 45 Hz before adjustment, according to the operating frequency adjustment parameters, each target heat pump unit now needs to load a frequency of 1 Hz, and the preset shielding frequency is exactly 46 Hz. Therefore, to avoid the adjusted operating frequency of all target heat pump units being the same as the preset shielding frequency, and to ensure the balance between heating capacity and heat demand, the loading frequency of 1 / 2 of the target heat pump units can be changed from 2 Hz to 47 Hz, while the remaining 1 / 2 of the target heat pump units maintain the original operating frequency of 45 Hz. The adjustment method for the load shedding frequency is similar to the adjustment method for the loading frequency and will not be repeated here.

[0109] Optionally, there are many possible methods for determining that the adjusted operating frequency of the target heat pump unit is different from the preset shielding frequency. The above method is only an example of a preferred method and cannot be used as a limitation.

[0110] The heating equipment control method provided in this embodiment determines the number of units to be started based on the outdoor ambient temperature, the initial target operating temperature difference, and preset startup rules, and loads the target heat pump units corresponding to the number of units to be started to the target operating frequency after starting at the startup frequency; and adjusts the operating status of multiple heat pump units based on the water temperature change rate, the current target operating temperature difference, and preset adjustment rules. During frequency loading, when multiple heat pump units are not all started, the heating capacity and heat demand are balanced by adding heat pump units, so that more heat pump units can be kept operating at the target operating frequency; when multiple heat pump units are all started, the heating capacity and heat demand are balanced by adjusting the operating frequency of all heat pump units, so that the heating pressure is shared by multiple heat pump units. This frequency loading method not only improves the energy conversion efficiency of the heat pump units, but also fully utilizes all heat pump units, avoiding the situation where some heat pump units are running at a high frequency while others are not started, thereby improving the overall service life of the heat pump units. Furthermore, during frequency shedding, the system determines whether the current operating frequency of the heat pump units is higher than the target operating frequency. If so, the operating frequency is adjusted to balance the heating capacity with the heat demand, thus avoiding energy waste. If the current operating frequency is at the target operating frequency, some of the target heat pump units are shut down to achieve a balance between heating capacity and heat demand. This frequency shedding method not only improves the energy conversion efficiency of the heat pump units but also avoids energy waste.

[0111] The operating frequency adjustment parameters of the heat pump unit are determined by the current water temperature change rate, the current target operating temperature difference and the preset adjustment rules.

[0112] Example 3

[0113] Figure 5 This is a structural diagram of the heating equipment control device provided in Example 3 of the present invention.

[0114] Reference Figure 5 As shown, this embodiment provides a heating equipment control device 50 including: an acquisition module 501 , a determination module 502 , and a control module 503 .

[0115] The acquisition module 501 is used to acquire the outdoor ambient temperature, the working setting temperature and the initial actual temperature, and determine the initial target working temperature difference according to the working setting temperature and the initial actual temperature.

[0116] The determination module 502 is used to determine the number of units to be started according to the outdoor ambient temperature, the initial target operating temperature difference and the preset starting rules.

[0117] The control module 503 is used to operate the target heat pump units corresponding to the number of units to be started among the multiple heat pump units, wherein the target heat pump units are loaded to the target operating frequency after being started at the starting frequency, and maintain operation at the target operating frequency. The target operating frequency is the operating frequency with the highest energy conversion efficiency of the target heat pump units.

[0118] Optionally, after operating the target heat pump units corresponding to the number of units to be started among the multiple heat pump units, the acquisition module 501 is further configured to obtain a water temperature change rate and a current actual temperature of the target heat pump unit, and determine a current target operating temperature difference based on the set operating temperature and the current actual temperature. The water temperature change rate is used to represent the temperature change of the liquid in the target heat pump unit over a preset period of time.

[0119] Optionally, the determination module 502 is further configured to determine an operating frequency adjustment parameter according to the water temperature change rate, the current target operating temperature difference, and a preset adjustment rule.

[0120] Optionally, the control module 503 is further configured to adjust the working states of the plurality of heat pump units according to the working frequency adjustment parameters.

[0121] Optionally, if the operating frequency adjustment parameter corresponds to a frequency loading operation, the control module 503 is further used to start the selected heat pump unit according to the operating frequency adjustment parameter when the target heat pump unit is part of the multiple heat pump units, wherein the selected heat pump unit is a unit that has not been started among the current multiple heat pump units, and the target heat pump unit continues to operate at the target operating frequency; or, when the target heat pump unit is all the units among the multiple heat pump units, the operating frequency of the target heat pump unit is increased according to the operating frequency adjustment parameter.

[0122] Optionally, if the operating frequency adjustment parameter corresponds to a frequency load reduction operation, the control module 503 is also used to reduce the operating frequency of the target heat pump unit according to the operating frequency adjustment parameter when the current operating frequency of the target heat pump unit is higher than the target operating frequency; or, when the current operating frequency of the target heat pump unit is the target operating frequency, shut down some target heat pump units according to the operating frequency adjustment parameter.

[0123] Optionally, the heating equipment control device further includes:

[0124] The adjustment module is used to adjust the working status of multiple heat pump units according to the working frequency adjustment parameters. If it is determined that the target heat pump unit currently needs to be adjusted for safety, the working status of the target heat pump unit is adjusted according to the safety working adjustment parameters. Among them, the safety working adjustment parameters are used to adapt to the working frequency adjustment requirements of the safety adjustment, and the safety adjustment is used to ensure that the target heat pump unit is in a safe working state.

[0125] Optionally, the heating equipment control device further includes:

[0126] The shielding module is used to determine the adjusted operating frequency of the target heat pump unit after adjusting the operating states of the multiple heat pump units according to the operating frequency adjustment parameters, wherein the adjusted operating frequency is different from the preset shielding frequency.

[0127] The heating equipment control device provided in this embodiment can be used to execute the heating equipment control method of the above embodiment. Its implementation principle and technical effects are similar and will not be repeated here.

[0128] It should be noted that the division of the various modules of the above devices is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a single physical entity, or physically separated. Furthermore, these modules may be implemented entirely in the form of software called by processing elements, entirely in the form of hardware, or partially in the form of software called by processing elements, while others may be implemented in the form of hardware.

[0129] Example 4

[0130] Figure 6This is a structural diagram of an electronic device provided in Example 4 of the present invention.

[0131] Reference Figure 6 As shown, the electronic device 60 provided in this embodiment includes: a processor 601 and a memory 602 communicatively connected to the processor.

[0132] The memory 602 stores computer-executable instructions; the processor 601 executes the computer-executable instructions stored in the memory 602 to implement any of the aforementioned heating device control methods.

[0133] In the specific implementation of the above-mentioned electronic device, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or any conventional processor. The method disclosed in conjunction with the embodiments of the present application can be directly implemented as a hardware processor, or can be implemented by a combination of hardware and software modules in the processor.

[0134] In addition, an embodiment of the present invention further provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement any of the heating equipment control methods described above.

[0135] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with computer instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0136] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it is used to implement any of the heating equipment control methods described above.

[0137] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0138] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0139] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0140] In the above description, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heating equipment control method, characterized in that: Applied to a heating device, the heating device comprising a plurality of heat pump units, the method comprising: Obtaining the outdoor ambient temperature, the operating set temperature, and the initial actual temperature, and determining an initial target operating temperature difference based on the operating set temperature and the initial actual temperature; Determine the number of units to be started according to the outdoor ambient temperature, the initial target operating temperature difference and a preset startup rule; operating target heat pump units corresponding to the number of units to be started among the plurality of heat pump units, wherein the target heat pump units are loaded to a target operating frequency after starting at a starting frequency and maintained operating at the target operating frequency, wherein the target operating frequency is an operating frequency with the highest energy conversion efficiency of the target heat pump units; After running the target heat pump units corresponding to the number of units to be started among the plurality of heat pump units, the method further includes: Obtaining a water temperature change rate and a current actual temperature of the target heat pump unit, and determining a current target operating temperature difference based on the operating set temperature and the current actual temperature, wherein the water temperature change rate is used to represent a temperature change of the liquid in the target heat pump unit within a preset time period; Determining an operating frequency adjustment parameter according to the water temperature change rate, the current target operating temperature difference, and a preset adjustment rule; The operating states of the multiple heat pump units are adjusted according to the operating frequency adjustment parameters.

2. The heating equipment control method according to claim 1, characterized in that: If the operating frequency adjustment parameter corresponds to a frequency loading operation, then adjusting the operating states of the plurality of heat pump units according to the operating frequency adjustment parameter includes: When the target heat pump unit is part of the multiple heat pump units, the standby heat pump unit is started according to the operating frequency adjustment parameter, wherein the standby heat pump unit is a unit that is not started among the multiple heat pump units currently, and the target heat pump unit continues to operate at the target operating frequency; or When the target heat pump units are all the heat pump units, the operating frequencies of the target heat pump units are increased according to the operating frequency adjustment parameters.

3. The heating equipment control method according to claim 1, characterized in that: If the operating frequency adjustment parameter corresponds to a frequency load shedding operation, adjusting the operating states of the plurality of heat pump units according to the operating frequency adjustment parameter includes: When the current operating frequency of the target heat pump unit is higher than the target operating frequency, the operating frequency of the target heat pump unit is reduced according to the operating frequency adjustment parameter; or When the current operating frequency of the target heat pump unit is the target operating frequency, some of the target heat pump units are shut down according to the operating frequency adjustment parameters.

4. The heating equipment control method according to any one of claims 1 to 2, characterized in that: Before adjusting the working states of the plurality of heat pump units according to the working frequency adjustment parameters, the method further includes: If it is determined that the target heat pump unit currently needs to be adjusted for safety assurance, the working state of the target heat pump unit is adjusted according to the safety working adjustment parameters, wherein the safety working adjustment parameters are used to adapt to the working frequency adjustment requirements of the safety assurance adjustment, and the safety assurance adjustment is used to ensure that the target heat pump unit is in a safe working state.

5. The heating equipment control method according to any one of claims 1 to 3, characterized in that: After adjusting the working states of the plurality of heat pump units according to the working frequency adjustment parameters, the method further includes: An adjusted operating frequency of the target heat pump unit is determined, wherein the adjusted operating frequency is different from a preset shielding frequency.

6. A heating equipment control device, characterized in that: include: An acquisition module is used to acquire the outdoor ambient temperature, the working setting temperature and the initial actual temperature, and determine an initial target working temperature difference according to the working setting temperature and the initial actual temperature; a determination module, configured to determine the number of units to be started according to the outdoor ambient temperature, the initial target operating temperature difference, and a preset startup rule; a control module, configured to operate target heat pump units corresponding to the number of units to be started among a plurality of heat pump units, the heating device including the plurality of heat pump units, the target heat pump units being loaded to a target operating frequency after being started at a starting frequency, and maintaining operation at the target operating frequency, the target operating frequency being an operating frequency with the highest energy conversion efficiency for the target heat pump units; After operating the target heat pump units corresponding to the number of units to be started among the multiple heat pump units, the acquisition module is further configured to acquire a water temperature change rate and a current actual temperature of the target heat pump units, and determine a current target operating temperature difference based on the operating set temperature and the current actual temperature, wherein the water temperature change rate is used to represent a temperature change of the liquid in the target heat pump units within a preset time period; The determination module is further configured to determine an operating frequency adjustment parameter based on the water temperature change rate, the current target operating temperature difference, and a preset adjustment rule; The control module is further configured to adjust the working states of the plurality of heat pump units according to the working frequency adjustment parameters.

7. An electronic device comprising: a processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 5 when executed by a processor.

9. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

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