Fresh air system, heat pump water temperature adjusting method, device and storage medium

Abstract

This application provides a fresh air system, a heat pump water temperature regulation method, equipment, and storage medium, relating to the field of heat pump control systems. This solution regulates the temperature of the circulating water output by the heat pump unit, thereby controlling the output of circulating water with a corresponding temperature to meet temperature and humidity regulation under different modes. Specifically, this solution uses a series-connected fresh air system to fully utilize the water temperature of the circulating water output by the heat pump unit. The fresh air unit uses the corresponding water temperature for humidity regulation, while the fan coil unit uses the circulating water after passing through the fresh air unit to heat and cool the indoor return air for temperature regulation, thus achieving independent temperature and humidity control.

Description

Technical Field

[0001] This application relates to the field of heat pump control systems, and more particularly to a fresh air system, a heat pump water temperature regulation method, equipment, and storage medium. Background Technology

[0002] In recent years, fresh air systems have become increasingly popular in the market. Fresh air systems can automatically draw fresh outdoor air into the room through negative pressure, ventilate the indoor environment, remove polluted air, and also have functions such as dehumidification and room temperature regulation.

[0003] In related technologies, fresh air systems are mainly parallel systems. The heat pump unit of the fresh air system outputs two streams of low-temperature chilled water, one for dehumidification and the other for indoor heat exchange. However, using excessively low-temperature water for indoor heat exchange introduces additional factors, such as dehumidification, that affect the indoor heat exchange efficiency. Therefore, to achieve independent temperature and humidity control, this field employs a method of adding a mixing center to the fresh air system to increase the water temperature. The mixing center, as a water temperature mixing device, can convert hot water with a high temperature difference and small flow rate into circulating water with a low temperature difference and large flow rate. However, this method makes the fresh air system more complex and expensive, without improving its reliability. Summary of the Invention

[0004] This application provides a fresh air system, a heat pump water temperature regulation method, equipment, and storage medium, which can provide a fresh air system with a simple structure and an effective water temperature regulation scheme. It can utilize water temperature gradients and achieve independent control of temperature and humidity at the same outlet water temperature.

[0005] In a first aspect, embodiments of this application provide a fresh air system, including a heat pump unit, a fresh air unit, a hydraulic decoupling unit, and a fan coil unit. The heat pump unit is used to control the outlet water temperature; the inlet of the fresh air unit is connected to the outlet of the heat pump unit via a pipeline, and the fresh air unit is used to regulate the humidity of the environment; the inlet of the hydraulic decoupling unit is connected to the outlet of the fresh air unit via a pipeline, and the first outlet of the hydraulic decoupling unit is connected to the return water outlet of the heat pump unit via a pipeline; the inlet of the fan coil unit is connected to the second outlet of the hydraulic decoupling unit via a pipeline, and the outlet of the fan coil unit is connected to the return water outlet of the hydraulic decoupling unit via a pipeline, and the fan coil unit is used to regulate the temperature of the environment.

[0006] Secondly, embodiments of this application also provide a heat pump water temperature regulation method, applied to the fresh air system described above, the method comprising:

[0007] Based on the operating parameters of the fresh air system, determine whether the fresh air system has completed mode initialization;

[0008] If the fresh air system has not completed mode initialization, then determine the first target water temperature for the initial operation of the fresh air system;

[0009] If the fresh air system has completed mode initialization, then determine the second target water temperature for adjusting the outlet water temperature in the fresh air system;

[0010] After determining the target water temperature, the heat pump unit is controlled to output circulating water at the corresponding target water temperature to assist in humidity and / or temperature regulation. The target water temperature is either the currently determined first target water temperature or the second target water temperature.

[0011] Thirdly, embodiments of this application also provide an electronic device, which further includes:

[0012] One or more processors;

[0013] A storage device for storing one or more programs, which, when executed by one or more processors, implement the heat pump water temperature regulation method as described in any of the above embodiments.

[0014] Fourthly, embodiments of this application also provide a storage medium storing computer-executable instructions, which, when executed by a processor, are used to perform the heat pump water temperature regulation method as described in any of the above embodiments.

[0015] This application scheme regulates the temperature of the circulating water output by the heat pump unit to meet the temperature and humidity regulation in different modes, thereby controlling the circulating water output by the heat pump unit to have the corresponding water temperature. Therefore, this scheme fully utilizes the water temperature of the circulating water output by the heat pump unit by setting up a series-connected fresh air system. That is, the fresh air unit uses the corresponding water temperature for humidity regulation, and the fan coil unit can use the circulating water after passing through the fresh air unit to perform cooling and heating treatment on the indoor return air for temperature regulation, thereby achieving independent temperature and humidity control. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a fresh air system provided in one embodiment of this application;

[0017] Figure 2 A flowchart illustrating the steps of a heat pump water temperature regulation method provided in an embodiment of this application;

[0018] Figure 3 A flowchart illustrating the steps for determining a second target water temperature under a cooling mode, as provided in an embodiment of this application;

[0019] Figure 4 A flowchart illustrating the steps for determining a second target water temperature under a heating mode provided in an embodiment of this application;

[0020] Figure 5This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0021] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of this application and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, the accompanying drawings only show the parts related to the embodiments of this application, not all structures. Those skilled in the art, after reading this specification, should be able to conceive that any combination of technical features can constitute an optional implementation method, provided that the technical features do not contradict each other.

[0022] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. In the description of this application, "multiple" means two or more, and "several" means one or more.

[0023] Fresh air systems can be used in indoor spaces to ventilate and exchange air with the outdoors. For example, in home settings, fan coil units can deliver air carrying different amounts of heat to the room to achieve temperature control. Figure 1 This is a schematic diagram of the structure of a fresh air system provided in one embodiment of this application, as shown below. Figure 1 As shown, the fresh air system includes a heat pump unit (HPU), a fresh air unit (FAU), a hydraulic decoupling unit (HDU), and a fan coil unit (FCU). The figure shows two fan coil units as an example. It should be noted that the number of fan coil units in this fresh air system can be set according to the needs of the location. Furthermore, the heat pump unit may include several heat pumps; similarly, the fresh air unit may include several fresh air fans, and the fan coil unit may include several fan coil units. It should also be noted that the hydraulic decoupling unit can be a decoupling tank, a hydraulic balance tank, etc., thereby isolating the hydraulic coupling between the primary and secondary circulation, ensuring that their hydraulic operating conditions do not affect each other.

[0024] Specifically, the heat pump unit controls the outlet water temperature and provides circulating water to the fresh air system, and the outlet of the heat pump unit is connected to the inlet of the fresh air unit through a pipeline. The fresh air unit can be used to regulate the humidity of the space. For example, the fresh air unit can introduce untreated outdoor fresh air into the indoor space, and can also use the circulating water output by the heat pump and the outdoor fresh air to regulate the humidity of the indoor environment.

[0025] The outlet of the fresh air unit is connected to the inlet of the hydraulic decoupling unit via a pipe. The first outlet of the hydraulic decoupling unit is connected to the inlet of the fan coil unit via a pipe, and the second outlet of the hydraulic decoupling unit is connected to the inlet of the heat pump unit via a pipe. Furthermore, the outlet of the fan coil unit is connected to the return outlet of the hydraulic decoupling unit via a pipe. In other words, the circulating water, after humidity regulation, is transferred from the hydraulic decoupling unit to the fan coil unit, allowing the residual heat of the circulating water to regulate the indoor temperature. It can be understood that the fan coil unit includes a fan coil unit and a fan. The fan coil unit can use circulating water in the fan coil unit to treat the indoor return air by heating or cooling, and the fan provides the corresponding airflow at a corresponding speed, thereby delivering the treated indoor return air into the room.

[0026] The fresh air system forms a series system. A heat pump unit outputs circulating water, which is then transmitted to the fresh air handling unit. The fresh air handling unit uses the circulating water at the current water temperature to regulate humidity. Furthermore, the fresh air handling unit is connected to a fan coil unit via a hydraulic decoupling unit, allowing the residual heat from the circulating water to treat the indoor return air for heating or cooling. This, in turn, regulates the temperature by adjusting the airflow through the fan. Therefore, the fresh air system can utilize water temperature gradients to meet both humidity and temperature regulation needs. Moreover, the system's simple structure effectively enables independent control of temperature and humidity at the same outlet water temperature.

[0027] Figure 2 This is a flowchart illustrating the steps of a heat pump water temperature regulation method according to an embodiment of this application. This method can be applied to the aforementioned fresh air system to control the temperature of the circulating water output by the heat pump unit. Figure 2 As shown, the heat pump water temperature adjustment method includes the following steps:

[0028] Step S210: Determine whether the fresh air system has completed mode initialization based on the operating parameters of the fresh air system.

[0029] Understandably, fresh air systems have operating modes such as dehumidification, humidification, cooling, and heating. When switching to these modes, the system needs to initialize; that is, it must complete mode initialization before executing the corresponding actions. Furthermore, the control system of the fresh air system also has operating parameters set to indicate whether mode initialization has been completed. It should be understood that mode initialization refers to the process executed when the equipment enters its working state, such as initializing parameters like the return water circulation time, start / stop temperature, and fault flags.

[0030] For example, the control system assigns values ​​to operating parameters to indicate that the current fresh air system has completed mode initialization. For instance, assigning a value of 1 to an operating parameter indicates that the current fresh air system has completed mode initialization; assigning a value of 0 to an operating parameter indicates that the current fresh air system has not completed mode initialization. Furthermore, when the fresh air system is first turned on, the control system will also indicate that the fresh air system has completed mode initialization through operating parameters.

[0031] Step S220: If the fresh air system has not completed mode initialization, determine the first target water temperature for the initial operation of the fresh air system.

[0032] Before the fresh air system completes its mode initialization, the control system operates at a first target water temperature. This means the control system needs to control the circulating water output from the heat pump unit to reach the first target water temperature. The control system determines the first target water temperature based on target parameters, including the supply air dew point temperature and the heat exchange temperature difference. Additionally, the outdoor temperature is also included in the target parameters.

[0033] In one embodiment, when the fresh air system has not completed mode initialization, the first target water temperature is determined based on the difference between the supply air dew point temperature of the fresh air unit and the preset heat exchange temperature difference. When the fresh air system has not completed mode initialization, for example, when the fresh air system has just been turned on or switched to a new mode (such as cooling or dehumidification), the fresh air system needs to perform the corresponding mode initialization. Therefore, when it is determined that the fresh air system has not completed mode initialization, the first target water temperature is correspondingly the difference between the supply air dew point temperature and the preset heat exchange temperature difference, and the control system controls the heat pump unit to output circulating water at the first target water temperature.

[0034] It should be noted that the heat exchange temperature difference, as a compensation value for water temperature adjustment in different modes, has different specific values ​​set in different modes. Moreover, this value also has a corresponding range. For a different mode, a value within the range is set as the heat exchange temperature difference.

[0035] Therefore, in this scheme, for fresh air systems that have not completed mode initialization, the control system uses the difference between the supply air dew point temperature and the heat exchange temperature difference to determine the first target water temperature, so that the fresh air system operates at this water temperature to meet the system operation requirements.

[0036] In one embodiment, when the fresh air system switches to heating mode but has not completed the corresponding mode initialization, a first target water temperature is determined based on the temperature range of the outdoor temperature. After the fresh air system switches to heating mode, it needs to be initialized to operate in heating mode. Therefore, in the absence of completed mode initialization, the control system needs to obtain the outdoor temperature, for example, by detecting it using a corresponding temperature sensor, such as detecting the temperature of the outdoor fresh air entering the fresh air unit, and then using the temperature of the outdoor fresh air as the outdoor temperature.

[0037] The system also sets corresponding temperature ranges, which are related to the outdoor temperature and also correspond to the outlet water temperature. That is, for the currently detected outdoor temperature, if it falls within the aforementioned temperature range, the outlet water temperature is used as the first target water temperature. For example, there are multiple temperature ranges, each corresponding to a different outlet water temperature. Therefore, when the outdoor temperature is within one of the temperature ranges, the corresponding first target outlet water temperature is the outlet water temperature corresponding to that temperature range.

[0038] In addition, in some embodiments, the temperature range may also correspond to a changing outlet water temperature. For example, within a temperature range, the outlet water temperature may decrease or increase as the outdoor temperature rises, that is, within this temperature range, each outdoor temperature corresponds to a different outlet water temperature.

[0039] Therefore, for the initialization of the heating mode, the control system needs to combine the outdoor temperature to determine the temperature range of the outdoor temperature, and determine the first target water temperature according to the outlet water temperature corresponding to the temperature range, so as to control the heat pump unit to output circulating water at the corresponding water temperature.

[0040] Step S230: If the fresh air system has completed mode initialization, then determine the second target water temperature for adjusting the outlet water temperature in the fresh air system.

[0041] For a fresh air system, once mode initialization is complete—meaning the system has entered its current operating mode and run for a period of time—the control system adaptively adjusts the outlet water temperature. Therefore, in some embodiments, once mode initialization is complete, the control system determines a second target water temperature based on the supply air compensation water temperature and the temperature compensation water temperature. Furthermore, in some embodiments, the control system also determines the second target water temperature based on either the supply air compensation water temperature or the temperature compensation water temperature.

[0042] In one embodiment, the fresh air system has completed mode initialization, that is, the fresh air system has entered the corresponding operating mode. For example, when the fresh air system enters the cooling mode and completes mode initialization, the control system determines the second target water temperature based on the supply air compensation water temperature and the temperature compensation water temperature.

[0043] Figure 3 A flowchart illustrating the steps for determining a second target water temperature under a cooling mode provided in an embodiment of this application is shown below. Figure 3 As shown, the heat pump water temperature regulation method of this application further includes the following steps:

[0044] Step S310: If the fresh air system has completed the mode initialization corresponding to the cooling mode, determine the supply air compensation water temperature based on the sum of the target water temperature output at the previous adjustment time in the cooling mode and the first compensation value.

[0045] Step S320: Determine the temperature compensation water temperature based on the sum of the target water temperature output at the previous adjustment time in cooling mode and the second compensation value.

[0046] Step S330: Select the minimum value between the air supply compensation water temperature and the temperature compensation water temperature as the second target water temperature.

[0047] Understandably, in cooling mode, the fresh air system needs to adjust the outlet water temperature of the heat pump unit. Therefore, the control system can determine the supply air compensation water temperature based on the target water temperature output at the previous adjustment time in cooling mode and the first compensation value, such as using the sum of the two as the supply air compensation water temperature.

[0048] The control system has corresponding adjustment cycles for the operating modes. At the adjustment time corresponding to each adjustment cycle, the control system needs to adjust the fresh air system to maintain its stable operation.

[0049] The first compensation value is determined based on the overshoot of the supply air dew point temperature. It should be noted that the overshoot of the supply air dew point temperature is the difference between the current supply air dew point temperature and the target supply air dew point temperature, which is the supply air dew point temperature output by the control system at the previous adjustment time.

[0050] For the overshoot of the supply air dew point temperature, the control system is set with a corresponding value range. For example, when the overshoot is less than any value within the value range, the first compensation value is determined to be the first target value, such as 1; when the overshoot is within the value range, the first compensation value is determined to be the second target value, such as 0; when the overshoot is greater than any value within the value range, the first compensation value is determined to be the third target value, such as -1.

[0051] Similarly, for temperature-compensated water temperature, the control system can determine it based on the target water temperature output at the previous adjustment time and the second compensation value, such as the sum of the target water temperature output at the previous adjustment time and the second compensation value as the temperature-compensated water temperature.

[0052] The second compensation value is determined based on the overshoot of the indoor temperature. It should be noted that the overshoot of the indoor temperature is the difference between the current indoor temperature and the target indoor temperature, and the target indoor temperature is the temperature that needs to be adjusted in the current operating mode.

[0053] For the overshoot of the supply air dew point temperature, the control system is set with a corresponding value range. For example, when the overshoot is less than any value within the value range, the first compensation value is determined as the first target value; when the overshoot is within the value range, the first compensation value is determined as the second target value; when the overshoot is greater than any value within the value range, the first compensation value is determined as the third target value.

[0054] After determining the supply air compensation water temperature and the temperature compensation water temperature, the control system uses the minimum of the two as the second target water temperature to control the heat pump unit to output circulating water at the corresponding water temperature, thereby meeting the requirements of the cooling mode.

[0055] Therefore, after the module initialization is completed, the control system determines the current outlet water temperature, i.e. the second target water temperature, based on the supply air compensation water temperature and the temperature compensation water temperature, so as to control the heat pump unit to output circulating water at the corresponding water temperature. Moreover, the control method is simple and can effectively meet the cooling demand.

[0056] In one embodiment, when the fresh air system enters heating mode and completes mode initialization, the control system determines a second target water temperature based on the supply air compensation water temperature and the temperature compensation water temperature. For example... Figure 4 As shown, Figure 4 The flowchart illustrates the steps for determining a second target water temperature under heating mode as provided in one embodiment of this application. The heat pump water temperature adjustment method of this application further includes the following steps:

[0057] Step S410: With the fresh air system having completed the mode initialization corresponding to the heating mode, determine the supply air compensation water temperature based on the sum of the target water temperature output at the previous adjustment time in the heating mode and the third compensation value.

[0058] Step S420: Determine the temperature compensation water temperature based on the sum of the target water temperature output at the previous adjustment time in heating mode and the fourth compensation value.

[0059] Step S430: Select the maximum value between the air supply compensation water temperature and the temperature compensation water temperature as the second target water temperature.

[0060] Understandably, in heating mode, the fresh air system needs to adjust the outlet water temperature of the heat pump unit. Therefore, the control system can determine the supply air compensation water temperature based on the target water temperature output at the previous adjustment time in cooling mode and the third compensation value, such as using the sum of the two as the supply air compensation water temperature.

[0061] The third compensation value is determined based on the overshoot of the supply air dew point temperature. It should be noted that the overshoot of the supply air dew point temperature is the difference between the current supply air dew point temperature and the target supply air dew point temperature, which is the supply air dew point temperature output by the control system at the previous adjustment time.

[0062] For the overshoot of the supply air dew point temperature, the control system is set with a corresponding value range. For example, when the overshoot is less than any value within the value range, the first compensation value is determined to be the first target value, such as 1; when the overshoot is within the value range, the first compensation value is determined to be the second target value, such as 0; when the overshoot is greater than any value within the value range, the first compensation value is determined to be the third target value, such as -1.

[0063] Similarly, for temperature-compensated water temperature, the control system can determine it based on the target water temperature output at the previous adjustment time and the fourth compensation value, such as the sum of the target water temperature output at the previous adjustment time and the fourth compensation value as the temperature-compensated water temperature.

[0064] The second compensation value is determined based on the overshoot of the indoor temperature. It should be noted that the overshoot of the indoor temperature is the difference between the current indoor temperature and the target indoor temperature, and the target indoor temperature is the temperature that needs to be adjusted in the current operating mode.

[0065] For the overshoot of the supply air dew point temperature, the control system is set with a corresponding value range. For example, when the overshoot is less than any value within the value range, the first compensation value is determined as the first target value; when the overshoot is within the value range, the first compensation value is determined as the second target value; when the overshoot is greater than any value within the value range, the first compensation value is determined as the third target value.

[0066] After determining the supply air compensation water temperature and the temperature compensation water temperature, the control system uses the maximum value of the two as the second target water temperature to control the heat pump unit to output circulating water at the corresponding water temperature, thereby meeting the requirements of the heating mode.

[0067] Therefore, after the module initialization is completed, the control system determines the current outlet water temperature, i.e. the second target water temperature, based on the supply air compensation water temperature and the temperature compensation water temperature, so as to control the heat pump unit to output circulating water at the corresponding water temperature. Moreover, the control method is simple and can effectively meet the heating demand.

[0068] In one embodiment, when the fresh air system has completed the mode initialization corresponding to the dehumidification mode, that is, in the dehumidification mode, after the fresh air system enters the dehumidification mode and runs for a period of time, the control system adaptively adjusts the outlet water temperature of the heat pump. Therefore, at each adjustment time, the corresponding second target water temperature is determined.

[0069] Specifically, under dehumidification conditions, the second target water temperature is determined by summing the target water temperature output at the previous adjustment time in dehumidification mode with the fifth compensation value, thus determining the supply air compensation water temperature. The control system uses the supply air compensation water temperature as the second target water temperature, thereby controlling the heat pump unit to output circulating water at the corresponding temperature. It can be understood that the fifth compensation value is determined based on the overshoot of the supply air dew point. Similarly, for the overshoot of the supply air dew point temperature, the control system sets a corresponding value range. For example, when the overshoot is less than any value within the range, the first compensation value is determined as the first target value; when the overshoot is within the range, the first compensation value is determined as the second target value; and when the overshoot is greater than any value within the range, the first compensation value is determined as the third target value.

[0070] Therefore, for dehumidification mode, the control system uses the supply air compensation water temperature as the second target water temperature, and controls the heat pump unit to output circulating water at the corresponding water temperature to achieve dehumidification control.

[0071] Step S240: After determining the target water temperature, control the heat pump unit to output circulating water corresponding to the target water temperature to assist in humidity and / or temperature regulation.

[0072] It should be understood that the target water temperature is either the currently determined first target water temperature or the second target water temperature. Understandably, the control system determines the target water temperature and controls the heat pump unit to output circulating water at the corresponding temperature. The fresh air unit can adjust the humidity of the outdoor fresh air based on the circulating water at the target temperature, such as humidifying or dehumidifying. Furthermore, after completing humidity adjustment, the fan coil unit can utilize the residual heat of the circulating water to treat the indoor return air. Of course, during temperature adjustment, the fan coil unit also needs to control the airflow to achieve temperature regulation, thus realizing a weak correlation between temperature regulation and the heat pump unit's outlet water temperature.

[0073] It is conceivable that air volume control can be achieved by adjusting the fan speed of the fan coil unit, such as by using PID (Proportional Integral Derivative) adjustment in related technologies to determine the fan speed.

[0074] In some embodiments, a corresponding limit range is also set for the fan speed. When the calculated fan speed is less than any value within the limit range, the minimum value within the limit range is used as the fan speed; when the calculated fan speed is greater than any value within the limit range, the maximum value within the limit range is used as the fan speed.

[0075] Before the fresh air system completes its mode initialization, the control system controls the heat pump unit to output circulating water at the first target temperature, allowing the fresh air system to operate at a fixed water temperature for a period of time, thus completing the mode initialization. Of course, after the fresh air system completes its mode initialization, the control system adjusts the circulating water temperature, such as outputting a second target water temperature, to control the heat pump unit to output circulating water at the corresponding temperature.

[0076] As can be seen from the above scheme, the control system controls the output of one circulating water channel by controlling the heat pump unit, and adjusts the humidity at the same outlet water temperature by controlling the outlet water temperature of the heat pump unit. This provides an effective water temperature regulation scheme for the fresh air system. While achieving independent control of temperature and humidity, it can also utilize the water temperature gradient, thus realizing the effective utilization of the heat of the circulating water.

[0077] In some embodiments, before the fresh air system completes mode initialization, the control system also needs to determine the current supply air dew point temperature before determining the first target water temperature. For the supply air dew point temperature, after determining the outdoor dew point temperature, the control system can determine the relative humidity of the outdoor environment compared to the indoor environment by comparing the upper and lower limits of the outdoor and indoor dew point temperatures. It is conceivable that the upper and lower limits of the indoor dew point temperature are preset temperature values ​​used to compare the humidity of the indoor and outdoor environments.

[0078] Understandably, during the process of introducing fresh outdoor air into the indoor environment, the humidity of the indoor environment will be affected by the dryness or humidity of the outdoor environment. Therefore, the control system needs to determine the relative dryness or humidity of the outdoor environment compared to the indoor environment. If the outdoor environment is humid, the fresh air system needs to dehumidify the outdoor fresh air; if the outdoor environment is dry, the fresh air system needs to humidify the outdoor fresh air.

[0079] It should be noted that the indoor and outdoor dew point temperatures can be calculated using relevant technical formulas, such as the Goff-Gratch formula; of course, they can also be detected by dew point meters, dew point hygrometers, and other detection equipment and uploaded to the control system.

[0080] Therefore, before determining the first target water temperature, the control system compares the supply air dew point temperature in the indoor and outdoor environments to determine the dryness and humidity of the outdoor environment. Then, based on the different dryness and humidity conditions, it determines the supply air dew point temperature to humidify or dehumidify the outdoor fresh air to meet the system operation requirements.

[0081] In one embodiment, if the outdoor dew point temperature is greater than the upper limit, the dry / wet state is determined to be a humid state and the humidity control mode is set to dehumidification mode. Correspondingly, under this dehumidification condition, the control system can determine the supply air dew point temperature as the difference between the upper limit and the preset dehumidification compensation value.

[0082] In one embodiment, if the outdoor dew point temperature is less than the lower limit, the humidification mode is determined to be a dry state with humidity control mode. Correspondingly, under this humidification condition, the control system can determine the supply air dew point temperature as the sum of the lower limit and a preset humidification compensation value.

[0083] In one embodiment, if the outdoor dew point temperature is between the upper and lower limits, the dry / humid state is determined to be suitable, and the humidity control module is in pause mode. It is understood that the current outdoor fresh air is suitable, and the fresh air unit does not need to perform additional humidification or dehumidification treatment on the outdoor fresh air; therefore, the corresponding supply air dew point temperature is the outdoor dew point temperature.

[0084] Figure 5 This is a schematic diagram of an electronic device provided in an embodiment of this application. The device is used to execute the heat pump water temperature regulation method provided in the above embodiment, and has corresponding functional modules and beneficial effects for executing the method. For example... Figure 5 As shown, the device includes a processor 501, a memory 502, an input device 503, and an output device 504. The number of processors 501 in the device can be one or more; the figure shows one processor 501 as an example. The processor 501, memory 502, input device 503, and output device 504 in the device can be connected via a bus or other means; the figure shows a connection via a bus as an example. The memory 502, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the heat pump water temperature regulation method in this embodiment. The processor 501 executes various functional applications and data processing of the device by running the software programs, instructions, and modules stored in the memory 502, thereby realizing the aforementioned heat pump water temperature regulation method.

[0085] The memory 502 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a given function; the data storage area may store data recorded or created during device use. Furthermore, the memory 502 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory, or other non-volatile solid-state storage device. In some instances, the memory 502 may further include memory remotely located relative to the processor 501, which can be connected to the terminal device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0086] Input device 503 can be used to input corresponding numerical or character information to processor 501, and to generate key signal inputs related to user settings and function control of the device. Output device 504 can be used to send or display key signal outputs related to user settings and function control of the device.

[0087] This application also provides a storage medium storing computer-executable instructions, which, when executed by a processor, are used to perform relevant operations in the heat pump water temperature regulation method provided in any embodiment of this application.

[0088] Computer-readable storage media include both permanent and non-permanent, removable and non-removable media, and information storage can be achieved by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0089] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0090] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for regulating the water temperature of a heat pump, characterized in that, Applied to a fresh air system, the fresh air system includes: A heat pump unit, wherein the heat pump unit is used to control the outlet water temperature; The fresh air unit has its inlet connected to the outlet of the heat pump unit via a pipe. The fresh air unit is used to regulate the humidity of the venue. A hydraulic decoupling unit, wherein the inlet of the hydraulic decoupling unit is connected to the outlet of the fresh air unit through a pipeline, and the first outlet of the hydraulic decoupling unit is connected to the return outlet of the heat pump unit through a pipeline. A fan coil unit, wherein the inlet of the fan coil unit is connected to the second outlet of the hydraulic decoupling unit through a pipeline, and the outlet of the fan coil unit is connected to the return outlet of the hydraulic decoupling unit through a pipeline, and the fan coil unit is used to regulate the temperature of the site. The heat pump water temperature regulation method includes: Based on the operating parameters of the fresh air system, determine whether the fresh air system has completed mode initialization; If the fresh air system has not completed mode initialization, then the first target water temperature for the initial operation of the fresh air system is determined; If the fresh air system has completed mode initialization, then determine the second target water temperature for adjusting the outlet water temperature in the fresh air system; After determining the target water temperature, the heat pump unit is controlled to output circulating water corresponding to the target water temperature to assist in humidity regulation and / or temperature regulation. The target water temperature is the currently determined first target water temperature or the second target water temperature. Wherein, if the fresh air system has not completed mode initialization, determining the first target water temperature for the initial operation of the fresh air system includes: When the fresh air system has not completed mode initialization, the first target water temperature is determined based on the difference between the supply air dew point temperature of the fresh air unit and the preset heat exchange temperature difference. Alternatively, if the fresh air system switches to heating mode but has not completed the mode initialization corresponding to the heating mode, the first target water temperature is determined based on the temperature range where the outdoor temperature is located.

2. The heat pump water temperature regulation method according to claim 1, characterized in that, Before determining the first target water temperature based on the difference between the supply air dew point temperature of the fresh air unit and the preset heat exchange temperature difference, when the fresh air system has not completed mode initialization, the method further includes: Based on the upper and lower limits of the indoor dew point temperature and the outdoor dew point temperature, the dryness and humidity state of the outdoor environment relative to the indoor environment is determined, so as to determine the supply air dew point temperature under the humidity control mode corresponding to the dryness and humidity state.

3. The heat pump water temperature regulation method according to claim 2, characterized in that, The step of determining the relative humidity of the outdoor environment to the indoor environment based on the upper and lower limits of the indoor dew point temperature and the outdoor dew point temperature, and then determining the supply air dew point temperature under the humidity control mode corresponding to the humidity state, includes: If the outdoor dew point temperature is greater than the upper limit value, then the dry and wet state is determined to be a humid state and the humidity control mode is a dehumidification mode, so that the supply air dew point temperature is determined to be the difference between the upper limit value and the preset dehumidification compensation value. If the outdoor dew point temperature is less than the lower limit value, then the dry / wet state is determined to be a dry state and the humidity control mode is set to humidification mode, so that the supply air dew point temperature is determined to be the sum of the lower limit value and the preset humidification compensation value. If the outdoor dew point temperature is between the upper limit and the lower limit, then the dry / wet state is determined to be a suitable state and the humidity control module is in pause mode, so that the supply air dew point temperature is determined to be the outdoor dew point temperature.

4. The heat pump water temperature regulation method according to claim 1, characterized in that, If the fresh air system has completed mode initialization, then determining the second target water temperature for adjusting the outlet water temperature in the fresh air system includes: Once the fresh air system has completed mode initialization, the second target water temperature is determined based on the supply air compensation water temperature and / or the temperature compensation water temperature.

5. The heat pump water temperature regulation method according to claim 4, characterized in that, The fresh air system has completed mode initialization corresponding to the cooling mode. When the fresh air system has completed mode initialization, determining the second target water temperature based on the supply air compensation water temperature and / or the temperature compensation water temperature includes: When the fresh air system has completed the mode initialization corresponding to the cooling mode, the supply air compensation water temperature is determined based on the sum of the target water temperature output at the previous adjustment time in the cooling mode and the first compensation value. The temperature compensation water temperature is determined based on the sum of the target water temperature output at the previous adjustment time in cooling mode and the second compensation value. The minimum value between the air supply compensation water temperature and the temperature compensation water temperature is selected as the second target water temperature; Alternatively, if the fresh air system has completed the mode initialization corresponding to the heating mode, the supply air compensation water temperature is determined based on the sum of the target water temperature output at the previous adjustment time in the heating mode and the third compensation value. The temperature compensation water temperature is determined based on the sum of the target water temperature output at the previous adjustment time in heating mode and the fourth compensation value. The maximum value between the air supply compensation water temperature and the temperature compensation water temperature is selected as the second target water temperature; The first compensation value and the third compensation value are both determined based on the overshoot of the supply air dew point temperature, and the second compensation value and the fourth compensation value are both determined based on the overshoot of the indoor temperature.

6. The heat pump water temperature regulation method according to claim 4, characterized in that, The fresh air system has completed mode initialization corresponding to the dehumidification mode. When the fresh air system has completed mode initialization, determining the second target water temperature based on the supply air compensation water temperature and / or the temperature compensation water temperature includes: The supply air compensation water temperature is determined based on the sum of the target water temperature output at the previous adjustment time in dehumidification mode and the fifth compensation value, and the supply air compensation water temperature is used as the second target water temperature. The fifth compensation value is determined based on the overshoot of the air supply dew point.

7. An electronic device, characterized in that, The electronic device includes: One or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, implement the heat pump water temperature regulation method as described in any one of claims 1 to 6.

8. A storage medium for storing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a processor, are used to perform the heat pump water temperature regulation method as described in any one of claims 1 to 6.

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