Water heating system temperature control method and device, temperature controller and water heating system
By calculating the dew point temperature and adjusting the inlet water flow rate, the problem of ground condensation in the water heating system was solved, and safe and reliable cooling control was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-30
- Publication Date
- 2026-03-27
Smart Images
Figure CN121739463A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of heating engineering technology, specifically to a temperature control method, device, thermostat, and water heating system for a water heating system. Background Technology
[0002] When multiple terminals of the outdoor unit are connected to fan coil units and underfloor heating, or only underfloor heating, the water temperature entering each room cannot be individually collected during cooling operation, especially the inlet water temperature of the underfloor heating system. This can easily cause the inlet water temperature to be lower than the dew point temperature of the room, resulting in condensation on the floor. Excessive condensation can make the floor slippery, thus posing a safety hazard to users. Summary of the Invention
[0003] In view of this, embodiments of the present invention provide a method, device, thermostat, and water heating system for temperature control of a water heating system, to prevent condensation from occurring on the ground when using a water heating system for cooling.
[0004] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:
[0005] A method for temperature control in a water heating system includes:
[0006] Obtain the inlet water temperature for underfloor heating;
[0007] Obtain the ambient temperature and humidity at the target measurement point;
[0008] The dew point temperature corresponding to the target measurement point is calculated based on the ambient temperature and the ambient humidity.
[0009] Obtain the distance between the underfloor heating pipe and the ground at the target measurement point;
[0010] A first inlet temperature correction coefficient is determined based on the distance value and the inlet water flow rate in the underfloor heating pipe. The first inlet temperature correction coefficient is used to characterize the degree of attenuation of the water temperature in the underfloor heating pipe when it is conducted to the ground.
[0011] The inlet water temperature is corrected based on the first inlet water temperature correction coefficient;
[0012] Determine whether the corrected inlet water temperature is lower than the dew point temperature;
[0013] When the corrected inlet water temperature is lower than the dew point temperature, the inlet water flow rate is reduced.
[0014] Optionally, in the above-mentioned water heating system temperature control method, calculating the dew point temperature corresponding to the target measurement point based on the ambient temperature and the ambient humidity includes:
[0015] Obtain the ground material and ambient wind speed at the target measurement point;
[0016] Obtain a dew point correction factor that matches the bottom surface material and ambient wind speed;
[0017] The dew point temperature corresponding to the target measurement point is calculated based on the ambient temperature, the ambient humidity, and the dew point correction factor.
[0018] Optionally, in the above-mentioned water heating system temperature control method, when the corrected inlet water temperature is lower than the dew point temperature, reducing the inlet water flow rate includes:
[0019] Determine whether the ambient temperature has reached the target temperature;
[0020] When the target temperature is reached, the inlet water flow rate is reduced based on a preset step size so that the corrected inlet water temperature is lower than the dew point temperature.
[0021] When the target temperature is not reached, the humidity control system enters dehumidification mode to increase the dew point temperature.
[0022] Optionally, in the above-mentioned water heating system temperature control method, after obtaining the underfloor heating inlet water temperature, it further includes:
[0023] Obtain a target measurement point selection instruction, and determine the target measurement point based on the target measurement point selection instruction;
[0024] Obtain the second inlet water temperature correction coefficient corresponding to the target measurement point. The second inlet water temperature correction coefficient and the distance between the target measurement point and the water outlet of the manifold are linearly related. The inlet water temperature of the underfloor heating system is the outlet water temperature of the water outlet of the manifold.
[0025] The floor heating inlet temperature measured at the outlet of the manifold is corrected based on the first inlet water temperature correction coefficient to obtain the floor heating inlet temperature at the target measurement point.
[0026] The inlet water temperature is corrected based on the first inlet water temperature correction coefficient, and it is determined whether the corrected inlet water temperature is lower than the dew point temperature; when the corrected inlet water temperature is lower than the dew point temperature, the inlet water flow rate is reduced, including:
[0027] The floor heating inlet temperature at the target measurement point is corrected based on the first inlet water temperature correction coefficient; it is determined whether the corrected floor heating inlet temperature at the target measurement point is lower than the dew point temperature; when the corrected floor heating inlet temperature at the target measurement point is lower than the dew point temperature, the inlet water flow rate is reduced.
[0028] A temperature control device for a water heating system, comprising:
[0029] Inlet water temperature acquisition unit, used to obtain the inlet water temperature of the underfloor heating system;
[0030] Temperature and humidity acquisition unit is used to acquire the ambient temperature and humidity of the target measurement point;
[0031] A dew point temperature calculation unit is used to calculate the dew point temperature corresponding to the target measurement point based on the ambient temperature and the ambient humidity.
[0032] The inlet water temperature correction unit is used to obtain the distance value between the underfloor heating pipe and the ground at the target measurement point, determine the first inlet water temperature correction coefficient based on the distance value and the inlet water flow rate in the underfloor heating pipe, the first inlet water temperature correction coefficient is used to characterize the degree of attenuation of the water temperature in the underfloor heating pipe when it is conducted to the ground, and correct the inlet water temperature based on the first inlet water temperature correction coefficient.
[0033] The judgment unit is used to determine whether the corrected inlet water temperature is lower than the dew point temperature;
[0034] A flow rate regulating unit is used to reduce the inlet water flow rate when the corrected inlet water temperature is lower than the dew point temperature.
[0035] A temperature controller includes at least one processing device and a storage device connected to the processing device, wherein:
[0036] The storage device is used to store computer programs;
[0037] The processing device is used to execute the computer program so that the thermostat can implement any of the above-described water heating system temperature control methods.
[0038] A water heating system, including the aforementioned thermostat.
[0039] Optionally, the above-mentioned water heating system may also include:
[0040] Outdoor unit;
[0041] A buffer water tank connected to the outdoor unit;
[0042] A water distributor and a water collector are connected to the buffer water tank, and a temperature sensor is installed at the outlet of the water distributor;
[0043] A floor heating valve is installed at the outlet of the water distributor;
[0044] A water pump is installed between the buffer tank and the water distributor;
[0045] The underfloor heating pipe connected to the water outlet of the manifold;
[0046] A fan coil unit connected to the water outlet of the water distributor.
[0047] Optionally, in the above-mentioned water heating system, the thermostat is integrated into the outdoor unit.
[0048] Optionally, the above-mentioned water heating system may also include:
[0049] The wired controller has its signal input terminal connected to the temperature sensor and to a temperature and humidity sensor used to measure the ambient temperature and humidity of the target measurement point. The signal output terminal of the wired controller is connected to the temperature controller in the outdoor unit.
[0050] As can be seen from the above technical solution, when using a water heating system for cooling control, the inlet water temperature, ambient temperature, and ambient humidity are first obtained. Then, the dew point temperature corresponding to the target measurement point is calculated based on the ambient temperature and ambient humidity. Next, a first inlet water temperature correction coefficient is determined based on the distance between the ground and the underfloor heating pipe at the target measurement point and the inlet water flow rate. The inlet water temperature is then corrected using the first inlet water temperature correction coefficient. When it is detected that the corrected inlet water temperature is lower than the dew point temperature, the inlet water flow rate is reduced to prevent condensation on the ground and to prevent safety hazards to users caused by condensation. Attached Figure Description
[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0052] Figure 1 This is a schematic flowchart of a water heating system temperature control method disclosed in an embodiment of this application;
[0053] Figure 2 This is a schematic flowchart of a water heating system temperature control method disclosed in another embodiment of this application;
[0054] Figure 3 This is a schematic flowchart of a water heating system temperature control method disclosed in another embodiment of this application;
[0055] Figure 4 This is a schematic diagram of the structure of a temperature control device for a water heating system disclosed in an embodiment of this application;
[0056] Figure 5 This is a schematic diagram of the structure of a water heating system disclosed in an embodiment of this application;
[0057] Figure 6 This is a schematic diagram of the structure of a water heating system disclosed in another embodiment of this application. Detailed Implementation
[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0059] This invention provides a temperature control method for a water heating system. This method calculates the dew point temperature and compares it with the inlet water temperature. When the inlet water temperature is lower than the dew point temperature, the inlet water flow rate is reduced, thereby ensuring that the floor does not condense under cooling conditions.
[0060] For details, see Figure 1 The temperature control method for a water heating system disclosed in this application includes:
[0061] S101: Obtain the inlet water temperature for underfloor heating.
[0062] The water heating system temperature control method disclosed in this embodiment can be applied to a thermostat. When the water heating system is in cooling mode, the outdoor unit of the underfloor heating system provides cooling cold water to the buffer water tank. Then, the water pump between the buffer water tank and the manifold provides water circulation power to the terminal. The cold water then enters the underfloor heating system through the manifold. The cold water flows through the underfloor heating pipes to various corners of the room, undergoes heat exchange, and then flows back to the buffer water tank through the return water device.
[0063] During this process, the inlet water temperature of the underfloor heating system is measured by a preset temperature sensor. The temperature sensor can be set at the outlet of the manifold, and the outlet water temperature of the manifold is used as the inlet water temperature of the underfloor heating system in this step.
[0064] S102: Obtain the ambient temperature and humidity of the target measurement point.
[0065] In this solution, to ensure that condensation does not occur on the ground, the ground temperature needs to be higher than the dew point temperature. To calculate the dew point temperature of the target measurement point, the ambient temperature and humidity of the target measurement point need to be obtained. The target measurement point is a location in the cooling zone, where a temperature sensor and a humidity sensor are installed. By measuring the temperature and humidity through the temperature and humidity sensors, the corresponding ambient temperature and humidity can be obtained.
[0066] In this embodiment, the location of the target measurement point can be selected according to the user's settings. For example, for a three-bedroom, one-living-room house, a target measurement point can be set in each room and each living room. The target measurement point shown in this step is the target measurement point corresponding to the area used for cooling. For example, if cooling is required for the master bedroom, then the target measurement point is the measurement point corresponding to the master bedroom. Similarly, the ambient temperature is also the ambient temperature and humidity corresponding to the master bedroom.
[0067] S103: Calculate the dew point temperature corresponding to the target measurement point based on the ambient temperature and the ambient humidity.
[0068] Dew point temperature (Td) can be calculated using the Magnus formula or its simplified version, commonly in the following form:
[0069] ;
[0070] a=17.27, b=237.7 (applicable to water, unit: °C)
[0071] ;
[0072] T represents ambient temperature (°C), and RH represents ambient humidity (%).
[0073] S104: Obtain the distance between the underfloor heating pipe and the ground at the target measurement point.
[0074] In this application, considering that the underfloor heating pipes are buried underground and are a certain distance from the ground, during the heat absorption process of the cold water in the underfloor heating pipes during cooling, the temperature is lower closer to the underfloor heating and higher further away from the underfloor heating. Condensation only occurs when the ground temperature is lower than the dew point temperature. Therefore, it is necessary to estimate the ground temperature. In the estimation, the distance between the underfloor heating pipes and the ground at the target measurement point (the target measurement point is a certain location on the ground) is required. This location can be pre-calibrated. The distance values between the ground and the underfloor heating pipes at each target measurement point can be pre-measured, and a mapping relationship between the distance value and the ground at the target measurement point can be established. This mapping relationship is written into the memory. When it is necessary to retrieve the distance corresponding to the ground at a certain target measurement point, it can be retrieved directly from the memory.
[0075] S105: Determine a first inlet water temperature correction coefficient based on the distance value and the inlet water flow rate in the underfloor heating pipe. The first inlet water temperature correction coefficient is used to characterize the degree of attenuation of the water temperature in the underfloor heating pipe when it is conducted to the ground.
[0076] In this embodiment, the ground temperature at the target measurement point is related not only to the distance value mentioned above, but also to the water flow rate in the underfloor heating pipe. A higher water flow rate results in a higher ground temperature at the target measurement point, and vice versa. In this application, a first water inlet temperature correction coefficient matching the distance value and the water flow rate of the underfloor heating pipe can be pre-constructed. This first water inlet temperature correction coefficient characterizes the degree of temperature attenuation when the water temperature in the underfloor heating pipe is conducted to the ground. Different distance values and water flow rates correspond to different first water inlet temperature correction coefficients. After determining the distance value and water flow rate, the first water inlet temperature correction coefficient can be quickly determined using a lookup table method.
[0077] S106: Correct the inlet water temperature based on the first inlet water temperature correction coefficient.
[0078] In this step, after determining the first inlet water temperature correction coefficient, the inlet water temperature (underfloor heating inlet water temperature) is corrected. The corrected inlet water temperature can be used to characterize the temperature of the ground at the target measurement point.
[0079] S107: Determine whether the corrected inlet water temperature is lower than the dew point temperature.
[0080] In this step, by comparing the corrected inlet water temperature with the dew point temperature, it can be determined whether there is a risk of condensation on the ground at the target measurement point. Specifically, if the corrected inlet water temperature is lower than the dew point temperature, it indicates that there is a risk of condensation on the ground; otherwise, it indicates that there is no risk of condensation on the ground.
[0081] S108: When the corrected inlet water temperature is lower than the dew point temperature, reduce the inlet water flow rate.
[0082] In this step, when it is determined that there is a risk of condensation on the ground at the target measurement point, the temperature of the ground at the target measurement point can be increased by reducing the inflow rate of the water in the underfloor heating pipe until the temperature of the ground at the target measurement point is not lower than the dew point temperature.
[0083] In this embodiment, "reducing the inlet water flow rate" can refer to reducing the inlet water flow rate of the area to be cooled (where the target measurement point is located). For example, when it is necessary to use underfloor heating pipes to cool the master bedroom, "reducing the inlet water flow rate" refers to reducing the inlet water flow rate of the underfloor heating pipes corresponding to the master bedroom.
[0084] As can be seen from the above scheme, when using a water heating system for cooling control in this application, the inlet water temperature, ambient temperature, and ambient humidity are first obtained. Then, the dew point temperature corresponding to the target measurement point is calculated based on the ambient temperature and ambient humidity. Next, a first inlet water temperature correction coefficient is determined based on the distance between the ground and the underfloor heating pipe at the target measurement point and the inlet water flow rate. The inlet water temperature is then corrected using the first inlet water temperature correction coefficient. When it is detected that the corrected inlet water temperature is lower than the dew point temperature, the inlet water flow rate is reduced to prevent condensation on the ground and to prevent safety hazards to users caused by condensation.
[0085] In this embodiment, considering that dew point temperature is related not only to ambient temperature and humidity but also to the floor material (i.e., different floor materials, such as wood flooring, tile flooring, and resin flooring, will result in different dew points), this embodiment requires, in order to reliably estimate the floor dew point temperature, to pre-obtain the floor material of the target measurement point, acquire a dew point correction coefficient matching the floor material, and then use the dew point correction coefficient to correct the initial dew point temperature calculated based on the ambient temperature and humidity. The corrected dew point temperature is then used as the final dew point temperature for subsequent use. In this embodiment, considering that the floor material remains fixed after the user's renovation, the corresponding dew point correction coefficient is also fixed. Therefore, the dew point correction coefficient corresponding to the target measurement point can be written into memory and retrieved directly when the dew point temperature needs to be calculated.
[0086] In this embodiment, when a user uses a water-based heating system for cooling, a target temperature is set. If the corrected inlet water temperature is lower than the dew point temperature, condensation may occur on the floor. However, if the indoor temperature has not reached the target temperature, reducing the inlet water flow will reduce the cooling effect. Therefore, in this solution, see... Figure 2 When the corrected inlet water temperature is lower than the dew point temperature, the inlet water flow rate is reduced, including:
[0087] Step S201: Determine whether the ambient temperature has reached the target temperature.
[0088] The target temperature is the cooling temperature set by the user.
[0089] Step S202: When the target temperature is reached, reduce the inlet water flow rate.
[0090] When the target temperature is reached, it indicates that the indoor temperature meets the user's requirements. At this time, the water flow rate can be reduced based on a preset step size so that the corrected water temperature is lower than the dew point temperature, ensuring that the ground will not condense.
[0091] Step S203: When the target temperature is not reached, the humidity control system is controlled to enter the dehumidification mode to increase the dew point temperature.
[0092] If the indoor temperature does not reach the target temperature, the dew point temperature can be lowered by reducing the ambient humidity. Therefore, the humidity control system can be switched to dehumidification mode to reduce ambient humidity. This prevents condensation on the floor without affecting the cooling effect of the underfloor heating.
[0093] In this embodiment, since the temperature sensor for measuring the inlet water temperature of the underfloor heating system is typically located at the outlet of the manifold, and the inlet water temperature is the outlet temperature of the manifold, and there may be a certain distance between the manifold and the target measurement point, the cold water in the underfloor heating pipes absorbs some heat on its way from the manifold to the target measurement point, causing its temperature to be higher than the inlet water temperature measured by the temperature sensor when it reaches the target measurement point. Based on this situation, this solution can also correct the inlet water temperature based on the distance between the target measurement point and the manifold outlet to obtain the water temperature corresponding to the target measurement point. For details, see [link to relevant documentation]. Figure 3 After obtaining the inlet water temperature for underfloor heating, the following is also included:
[0094] Step S301: Obtain the target measurement point selection instruction, and determine the target measurement point based on the target measurement point selection instruction.
[0095] In this embodiment, the target measurement point selection instruction is used to select a cooling area, such as the master bedroom, side bedroom, or living room. Each cooling area has its own target measurement point. In this embodiment, the target measurement point can be a ground position that is perpendicular to a certain position on the underfloor heating pipe. More specifically, the certain position can refer to the position where the underfloor heating pipe enters the cooling area.
[0096] Step S302: Obtain the second inlet water temperature correction coefficient corresponding to the target measurement point. The second inlet water temperature correction coefficient and the distance between the target measurement point and the water outlet of the manifold are linearly related. The inlet water temperature of the underfloor heating system is the outlet water temperature of the water outlet of the manifold.
[0097] In this step, a second inlet water temperature correction coefficient can be pre-calibrated based on the distance between the target measurement point and the water outlet of the distributor. The second inlet water temperature correction coefficient has a linear relationship with the distance between the target measurement point and the water outlet of the distributor. The farther the distance between the target measurement point and the water outlet of the distributor, the higher the inlet water temperature after correction based on the second inlet water temperature correction coefficient. The closer the distance between the target measurement point and the water outlet of the distributor, the lower the inlet water temperature after correction based on the second inlet water temperature correction coefficient.
[0098] Step S303: Correct the floor heating inlet water temperature measured by the water outlet of the manifold based on the second inlet water temperature correction coefficient to obtain the floor heating inlet water temperature at the target measurement point.
[0099] This step, after measuring the water temperature at the manifold outlet, corrects the water temperature measured at the manifold outlet using the second inlet water temperature correction coefficient to obtain the underfloor heating inlet water temperature at the target measurement point (the water temperature in the underfloor heating pipe corresponding to the target measurement point). In the aforementioned embodiment, "correcting the inlet water temperature based on the first inlet water temperature correction coefficient, and determining whether the corrected inlet water temperature is lower than the dew point temperature; when the corrected inlet water temperature is lower than the dew point temperature, reducing the inlet water flow rate" specifically includes: correcting the underfloor heating inlet water temperature at the target measurement point based on the first inlet water temperature correction coefficient; determining whether the corrected underfloor heating inlet water temperature at the target measurement point (which can be considered the floor temperature at the target measurement point) is lower than the dew point temperature; and reducing the inlet water flow rate when the corrected underfloor heating inlet water temperature at the target measurement point is lower than the dew point temperature. In this implementation, the loss during the flow of cold water is taken as one of the factors in calculating the predicted ground temperature of the target measurement point, which makes the measured ground temperature of the target measurement point more reliable. The corrected ground heating inlet water temperature of the target measurement point is used instead of the "corrected inlet water temperature" in the previous step for analysis, and the subsequent analysis results are more reliable.
[0100] This embodiment discloses a temperature control device for a water heating system. For the specific working content of each unit in the device, please refer to the content of the above method embodiment.
[0101] The following describes the water heating system temperature control device provided in the embodiments of the present invention. The water heating system temperature control device described below can be referred to in correspondence with the water heating system temperature control method described above.
[0102] For details, see Figure 4 The temperature control device for the water heating system may include:
[0103] The inlet water temperature acquisition unit 10 corresponds to step S101 in the above method and is used to acquire the inlet water temperature of the underfloor heating system.
[0104] Temperature and humidity acquisition unit 20, which corresponds to step S102 in the above method, is used to acquire the ambient temperature and ambient humidity of the target measurement point;
[0105] Dew point temperature calculation unit 30, which corresponds to step S103 in the above method, is used to calculate the dew point temperature corresponding to the target measurement point based on the ambient temperature and the ambient humidity.
[0106] The inlet water temperature correction unit 40 corresponds to steps S104-S106 in the above method. It is used to obtain the distance value between the underfloor heating pipe and the ground at the target measurement point, determine the first inlet water temperature correction coefficient based on the distance value and the inlet water flow rate in the underfloor heating pipe, the first inlet water temperature correction coefficient is used to characterize the degree of attenuation of the water temperature in the underfloor heating pipe when it is conducted to the ground, and correct the inlet water temperature based on the first inlet water temperature correction coefficient.
[0107] The judgment unit 50, which corresponds to step S107 in the above method, is used to determine whether the corrected inlet water temperature is lower than the dew point temperature.
[0108] The flow rate regulating unit 60, which corresponds to step S108 in the above method, is used to reduce the inlet water flow rate when the corrected inlet water temperature is lower than the dew point temperature.
[0109] Corresponding to the above method, this application also discloses a temperature controller, including at least one processing device and a storage device connected to the processing device, wherein:
[0110] The storage device is used to store computer programs;
[0111] The processing device is used to execute the computer program so that the thermostat can implement any of the above-mentioned water heating system temperature control methods.
[0112] Corresponding to the aforementioned thermostat, this application also discloses a water heating system, which includes the aforementioned thermostat.
[0113] See Figure 5 and Figure 6 The water heating system may specifically include:
[0114] Outdoor unit 1;
[0115] The buffer water tank 2 is connected to the outdoor unit 1;
[0116] The water distributor 4 and the water collector 7 are connected to the buffer water tank 2;
[0117] The water pump 3 is installed between the buffer water tank 2 and the water distributor 4;
[0118] A fan 5 connected to the water outlet of the water distributor 4;
[0119] The underfloor heating pipe 6 is connected to the water outlet of the water distributor 4;
[0120] The floor heating valve 8 is installed at the outlet of the water distributor 4;
[0121] Temperature sensor 9 is installed at the outlet of the water distributor 4.
[0122] The thermostat can be integrated into the outdoor unit 1.
[0123] Among them, the outdoor unit 1, buffer water tank 2, water pump 3, water distributor 4, water collector 7, fan coil 5, underfloor heating pipe 6 and temperature sensor 9 are all existing equipment. Their functions, structures and the connection relationships between each part are all mature solutions in this field, and will not be described in detail here.
[0124] Figure 5 and Figure 6 In this configuration, RT1, RT2, RT3, and RT4 are all wired controllers.
[0125] The operating logic of the water heating system is as follows:
[0126] When the water heating system is in cooling mode, the outdoor unit 1 of the underfloor heating system provides cold water for heating to the buffer water tank 2. Then, the water pump 3 between the buffer water tank 2 and the manifold 4 provides the power for water circulation to the terminal. The cold water then enters the underfloor heating system through the manifold 4. The cold water flows through the underfloor heating pipes 6 through various corners of the room, undergoes heat exchange, and then flows back to the buffer water tank 2 through the return water device.
[0127] For example, such as Figure 6 As shown, when the user uses underfloor heating pipes 61 and 62 for cooling, thermostats RT3 and RT4 activate the cooling mode. After receiving the underfloor heating cooling command from thermostats RT3 and RT4, underfloor heating valves 8-1 and 8-2 open. Temperature detectors 9-3 and 9-4 at the outlet of the manifold 4 monitor the water temperature entering underfloor heating pipes 61 and 62 in real time. The measured water temperature is transmitted to the wired controller via the wiring harness of temperature sensor 9. The wired controller then transmits the water temperature detected by temperature sensors 9-3 and 9-4 to the outdoor unit via the communication line. The thermostat in the outdoor unit 1 can then measure the underfloor heating inlet water temperature. At the same time, the temperature and humidity sensors in the cooling areas corresponding to underfloor heating pipes 61 and 62 also transmit the ambient temperature and humidity they detect to the thermostat in the outdoor unit 1 via the wired controller.
[0128] All data involved in this application (including but not limited to data used for analysis, stored data, and displayed data) are information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of related data shall comply with the relevant laws, regulations and standards of the relevant countries and regions.
[0129] For ease of description, the above system is described by dividing it into various modules based on their functions. Of course, in implementing this invention, the functions of each module can be implemented in one or more software and / or hardware components.
[0130] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, for system or system embodiments, since they are fundamentally similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments. The systems and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. Components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.
[0131] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.
[0132] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
[0133] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, 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 said element.
[0134] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A method for temperature control in a water heating system, characterized in that, include: Obtain the inlet water temperature for underfloor heating; Obtain the ambient temperature and humidity at the target measurement point; The dew point temperature corresponding to the target measurement point is calculated based on the ambient temperature and the ambient humidity. Obtain the distance between the underfloor heating pipe and the ground at the target measurement point; A first inlet temperature correction coefficient is determined based on the distance value and the inlet water flow rate in the underfloor heating pipe. The first inlet temperature correction coefficient is used to characterize the degree of attenuation of the water temperature in the underfloor heating pipe when it is conducted to the ground. The inlet water temperature is corrected based on the first inlet water temperature correction coefficient; Determine whether the corrected inlet water temperature is lower than the dew point temperature; When the corrected inlet water temperature is lower than the dew point temperature, the inlet water flow rate is reduced.
2. The temperature control method for a water heating system according to claim 1, characterized in that, The dew point temperature corresponding to the target measurement point is calculated based on the ambient temperature and the ambient humidity, including: Obtain the ground material and ambient wind speed at the target measurement point; Obtain a dew point correction factor that matches the bottom surface material and ambient wind speed; The dew point temperature corresponding to the target measurement point is calculated based on the ambient temperature, the ambient humidity, and the dew point correction factor.
3. The temperature control method for a water heating system according to claim 1, characterized in that, When the corrected inlet water temperature is lower than the dew point temperature, reduce the inlet water flow rate, including: Determine whether the ambient temperature has reached the target temperature; When the target temperature is reached, the inlet water flow rate is reduced based on a preset step size so that the corrected inlet water temperature is lower than the dew point temperature. When the target temperature is not reached, the humidity control system enters dehumidification mode to increase the dew point temperature.
4. The temperature control method for a water heating system according to claim 1, characterized in that, After obtaining the inlet water temperature for the underfloor heating system, the following is also included: Obtain a target measurement point selection instruction, and determine the target measurement point based on the target measurement point selection instruction; Obtain the second inlet water temperature correction coefficient corresponding to the target measurement point. The second inlet water temperature correction coefficient and the distance between the target measurement point and the water outlet of the manifold are linearly related. The inlet water temperature of the underfloor heating system is the outlet water temperature of the water outlet of the manifold. The floor heating inlet temperature measured at the outlet of the manifold is corrected based on the second inlet temperature correction coefficient to obtain the floor heating inlet temperature at the target measurement point. The inlet water temperature is corrected based on the first inlet water temperature correction coefficient, and it is determined whether the corrected inlet water temperature is lower than the dew point temperature; when the corrected inlet water temperature is lower than the dew point temperature, the inlet water flow rate is reduced, including: The floor heating inlet temperature at the target measurement point is corrected based on the first inlet water temperature correction coefficient; it is determined whether the corrected floor heating inlet temperature at the target measurement point is lower than the dew point temperature; when the corrected floor heating inlet temperature at the target measurement point is lower than the dew point temperature, the inlet water flow rate is reduced.
5. A temperature control device for a water heating system, characterized in that, include: Inlet water temperature acquisition unit, used to obtain the inlet water temperature of the underfloor heating system; Temperature and humidity acquisition unit is used to acquire the ambient temperature and humidity of the target measurement point; A dew point temperature calculation unit is used to calculate the dew point temperature corresponding to the target measurement point based on the ambient temperature and the ambient humidity. The inlet water temperature correction unit is used to obtain the distance value between the underfloor heating pipe and the ground at the target measurement point, determine the first inlet water temperature correction coefficient based on the distance value and the inlet water flow rate in the underfloor heating pipe, the first inlet water temperature correction coefficient is used to characterize the degree of attenuation of the water temperature in the underfloor heating pipe when it is conducted to the ground, and correct the inlet water temperature based on the first inlet water temperature correction coefficient. The judgment unit is used to determine whether the corrected inlet water temperature is lower than the dew point temperature; A flow rate regulating unit is used to reduce the inlet water flow rate when the corrected inlet water temperature is lower than the dew point temperature.
6. A temperature controller, characterized in that, It includes at least one processing device and a storage device connected to the processing device, wherein: The storage device is used to store computer programs; The processing device is used to execute the computer program so that the thermostat can implement the water heating system temperature control method as described in any one of claims 1 to 4.
7. A water heating system, characterized in that, Includes the temperature controller as described in claim 6.
8. The water heating system according to claim 7, characterized in that, Also includes: Outdoor unit; A buffer water tank connected to the outdoor unit; A water distributor and a water collector are connected to the buffer water tank, and a temperature sensor is installed at the outlet of the water distributor; A floor heating valve is installed at the outlet of the water distributor; A water pump is installed between the buffer tank and the water distributor; The underfloor heating pipe connected to the water outlet of the manifold; A fan coil unit connected to the water outlet of the water distributor.
9. The water heating system according to claim 8, characterized in that, The thermostat is integrated into the outdoor unit.
10. The water heating system according to claim 9, characterized in that, Also includes: The wired controller has its signal input terminal connected to the temperature sensor and to a temperature and humidity sensor used to measure the ambient temperature and humidity of the target measurement point. The signal output terminal of the wired controller is connected to the temperature controller in the outdoor unit.