Method and device for controlling radiation air conditioning system and radiation air conditioning system

Abstract

The invention relates to the technical field of air conditioner control, and discloses a method for controlling a radiation air conditioner system. According to the water supply temperature of the heat pump host, the water outlet temperature of the ground radiation heat exchanger and the first target water mixing temperature, the first target opening degree of a first water mixing valve is determined; according to the first target water mixing temperature and the outlet water temperature of the top radiation heat exchanger, the second target opening degree of a second water mixing valve is determined; and under the condition that the operation mode is the refrigeration mode, the first water mixing valve is controlled to be adjusted to the first target opening degree, and meanwhile the second water mixing valve is controlled to be adjusted to the second target opening degree, so that the comfort degree of the indoor environment is improved. According to the scheme, the risks of low-temperature air accumulation and condensation caused by too low floor temperature during refrigeration in summer are avoided, the comfort level of the indoor environment and the operation efficiency of the radiation air conditioning system are improved, and a more comfortable indoor environment is brought to users. The invention further discloses a device for controlling the radiation air conditioner system and the radiation air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of air-conditioning control, and for example, to a method and device for controlling a radiant air-conditioning system, and a radiant air-conditioning system. Background Art

[0002] With the continuous advancement of modern building technology and people's increasing requirements for indoor environmental comfort, radiant air conditioning systems have been widely used in various types of buildings due to their high efficiency, energy saving and comfort. The radiant air conditioning system adjusts the indoor temperature through heat exchange through the top radiation installed on the top of the building and the ground radiation installed on the ground of the building. This system can not only effectively reduce energy consumption, but also provide a more uniform and stable indoor temperature environment, thereby improving the comfort of the living and working environment.

[0003] In the related art, the radiant air conditioning system uses the same water supply temperature to supply all the radiant heat exchangers at the end, that is, the top radiation and the ground radiation use the same water supply temperature. This design simplifies the structure of the radiant air conditioning system to a certain extent and reduces the installation and commissioning costs.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] Although the relevant technology has certain cost advantages, this supply method will cause the lower floor temperature to be too low during cooling in summer, which will cause the accumulation of low-temperature air near the floor, which not only increases the risk of condensation, but also seriously affects the comfort of the human body. Therefore, how to optimize the water supply temperature control of the radiant air conditioning system and improve the comfort of the indoor environment and the operating efficiency of the system has become a technical problem that needs to be solved urgently.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a method, an apparatus and a radiant air conditioning system for controlling a radiant air conditioning system, which can optimize the water supply temperature control of the radiant air conditioning system, improve the comfort of the indoor environment and the operating efficiency of the system.

[0009] In some embodiments, the method for controlling a radiant air conditioning system includes: determining a first target mixed water temperature; determining a first target opening of a first mixing water valve according to the water supply temperature of the heat pump host, the outlet water temperature of the ground radiation heat exchanger, and the first target mixed water temperature; determining a second target opening of a second mixing water valve according to the first target mixed water temperature and the outlet water temperature of the top radiation heat exchanger; when the operating mode is a cooling mode, controlling the first mixing water valve to adjust to the first target opening while controlling the second mixing water valve to adjust to the second target opening to improve the comfort of the indoor environment.

[0010] In some embodiments, the method for controlling the radiant air conditioning system includes: obtaining the dew point temperature of the room where the radiant air conditioning system is located; determining a temperature correction value based on the outdoor ambient humidity; and calculating a first target mixed water temperature based on the dew point temperature and temperature correction value of the room where the top radiant heat exchanger is located.

[0011] In some embodiments, the method for controlling a radiant air conditioning system includes: when the outdoor ambient humidity is greater than a humidity threshold, determining the temperature correction value to be a first correction value; when the outdoor ambient humidity is less than the humidity threshold, determining the temperature correction value to be a second correction value; wherein the first correction value is greater than the second correction value.

[0012] In some embodiments, the method for controlling a radiant air conditioning system includes: determining a first mixing water ratio based on a water supply temperature of a heat pump host, a water outlet temperature of a ground radiation heat exchanger, and a first target mixing water temperature; and determining a first target opening of a first mixing water valve based on the first mixing water ratio.

[0013] In some embodiments, the method for controlling a radiant air conditioning system includes: determining a second target mixed water temperature; determining a second mixed water ratio based on the first target mixed water temperature, the outlet water temperature of the top radiation heat exchanger, and the second target mixed water temperature; and determining a second target opening of the second mixed water valve based on the second mixed water ratio.

[0014] In some embodiments, the method for controlling a radiant air conditioning system includes: calculating an actual cooling load based on a heat transfer coefficient of a room where the radiant air conditioning system is located, a set temperature of the room where the radiant air conditioning system is located, and a current temperature of the room where the radiant air conditioning system is located; calculating the cooling capacity of a top radiant heat exchanger; and determining a second target mixed water temperature based on a difference between the actual cooling load and the cooling capacity of the top radiant heat exchanger.

[0015] In some embodiments, the method for controlling the radiant air conditioning system includes: when the operating mode is a heating mode, controlling the radiant air conditioning system to close a first mixing valve and a second mixing valve so that hot water output by the heat pump host can be directly supplied to the radiant heat exchanger.

[0016] In some embodiments, the device for controlling a radiant air conditioning system includes: a first determination module, configured to determine a first target mixed water temperature; a second determination module, configured to determine a first target opening of a first mixing water valve based on the water supply temperature of a heat pump host, the outlet water temperature of a ground radiation heat exchanger, and the first target mixed water temperature; a third determination module, configured to determine a second target opening of a second mixing water valve based on the first target mixed water temperature and the outlet water temperature of a top radiation heat exchanger; a control module, configured to control the first mixing water valve to adjust to the first target opening while controlling the second mixing water valve to adjust to the second target opening when the operating mode is a cooling mode, so as to improve the comfort of the indoor environment.

[0017] In some embodiments, the apparatus for controlling a radiant air conditioning system comprises: a processor and a memory storing program instructions, and the processor is configured to execute the aforementioned method for controlling a radiant air conditioning system when running the program instructions.

[0018] In some embodiments, the radiation air conditioning system includes: a heat pump host; a radiation terminal device, including a ground radiation heat exchanger and a top radiation heat exchanger; a first mixing valve; a second mixing valve; and the aforementioned device for controlling the radiation air conditioning system, installed on the heat pump host.

[0019] The method, device and radiant air conditioning system for controlling the radiant air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] This solution adopts a dual-mixing water control method to accurately adjust the water supply temperature of the ground radiation heat exchanger and the top radiation heat exchanger, thereby providing a suitable water supply temperature for the ground radiation heat exchanger and the top radiation heat exchanger in the cooling mode. In this way, it not only avoids the risk of low-temperature air accumulation and condensation caused by the low floor temperature during summer cooling, but also improves the comfort of the indoor environment and the operating efficiency of the radiation air conditioning system, bringing users a more comfortable and healthy indoor environment.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1-1 is a structural schematic diagram of a radiant air conditioning system provided by an embodiment of the present disclosure;

[0024] Figure 1-2is a schematic diagram of a method for controlling a radiant air conditioning system provided by an embodiment of the present disclosure;

[0025] Figure 2 is a schematic diagram of a method for calculating a first target mixed water temperature provided by an embodiment of the present disclosure;

[0026] Figure 3 is a schematic diagram of a method for determining a first target opening provided by an embodiment of the present disclosure;

[0027] Figure 4 is a schematic diagram of a method for determining a second target opening provided by an embodiment of the present disclosure;

[0028] Figure 5 is a schematic diagram of a device for controlling a radiant air conditioning system provided by an embodiment of the present disclosure;

[0029] Figure 6 It is a schematic diagram of another device for controlling a radiant air conditioning system provided by an embodiment of the present disclosure.

[0030] Reference numerals:

[0031] 1: heat pump main unit; 2: top radiation heat exchanger; 3: ground radiation heat exchanger; 4: pressure differential bypass valve; 5: second mixing valve; 6: first soft connector; 7: first stop valve; 8: flow switch; 9: pressure gauge; 10: mixing pump; 11: first mixing valve; 12: check valve; 13: Y-type filter; 14: water supply valve; 15: drain valve; 16: exhaust valve; 17: buffer water tank; 18: second stop valve; 19: expansion tank; 20: third stop valve; 21: second soft connector; 22: first water distributor; 23: first water collector; 24: second water collector; 25: second water distributor. DETAILED DESCRIPTION

[0032] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0033] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0034] Unless otherwise stated, the term "plurality" means two or more.

[0035] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0036] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0037] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0038] Figure 1-1 is a schematic diagram of the structure of a radiation air conditioning system provided by an embodiment of the present disclosure; Figure 1-1 As shown, the embodiment of the present disclosure provides a radiation air conditioning system, including: a heat pump main unit 1, a buffer water tank 17, a top radiation heat exchanger 2, a ground radiation heat exchanger 3, a plurality of water distributors and a plurality of water collectors. Specifically, tap water can be used as the water source of the radiation air conditioning system, which is located at the starting end of the pipeline, and the starting end is connected to the buffer water tank 17 through an inlet pipeline. The water inlet direction of the inlet pipeline is sequentially provided with a check valve 12, a Y-type filter 13 and a water supply valve 14. In actual use, by arranging the water supply valve 14 between the buffer water tank 17 and the Y-type filter 13, when the radiation air conditioning system needs to replenish water, the filtered tap water in the pipeline will flow into the buffer water tank 17 through the water supply valve 14.

[0039] Optionally, the buffer water tank 17 can be connected to the heat pump host 1 through a water inlet pipeline. The water inlet pipeline is sequentially provided with a second stop valve 18, an expansion tank 19, a third stop valve 20 and a second flexible connector 21 along the water inlet direction. By controlling the aforementioned components, the water in the buffer water tank 17 can flow into the heat pump host 1 through the water inlet pipeline, so that the heat pump host 1 can be controlled to be heated or cooled.

[0040] Optionally, the heat pump host 1 can also be connected to the buffer water tank 17 through a water outlet pipeline, and the water outlet pipeline is sequentially provided with a first flexible connector 6, a first stop valve 7, a flow switch 8 and a pressure gauge 9 along the water outlet direction. In this way, the water outlet flow in the pipeline can be controlled by controlling the flow switch. The buffer water tank 2 is also provided with an exhaust valve 16 and a drain valve 15.

[0041] Optionally, the buffer water tank 17 is connected to the first water distributor 22 and the second water mixing valve 5 through a water outlet pipeline, and the water outlet pipeline is provided with a pressure differential bypass valve 4 and a water mixing pump 10 in sequence. The second water mixing valve 5 is a three-way valve, and its other two ends are connected to the first water collector 23 and the second water distributor 25 respectively. The other end of the first water collector 23 is connected to the top radiation heat exchanger 2, and the other end of the top radiation heat exchanger 2 is connected to the first water distributor 22. The other end of the second water distributor 25 is connected to the ground radiation heat exchanger 3, and the other end of the ground radiation heat exchanger 3 is connected to the second water collector 24. Figure 1-1 As shown, a first water mixing valve 11 is further provided between the water outlet pipeline of the buffer water tank 17 and the water outlet pipeline of the second water collector 24 .

[0042] Optionally, after the heat pump host 1 starts the cooling mode, the heat pump host 1 will produce low-temperature cold water with a temperature of T0. When the first water mixing valve 11 is opened and the valve opening is adjusted to a suitable degree, the low-temperature cold water will be mixed with the water in the water outlet pipe of the ground radiation heat exchanger 3 to reach the first target mixed water temperature required by the top radiation heat exchanger 2. In this way, it is convenient to ensure that the top radiation heat exchanger 2 can effectively and efficiently adjust the indoor ambient temperature. Furthermore, after the water with a temperature of the first target mixed water temperature passes through the top radiation heat exchanger 2, the water in the top radiation heat exchanger 2 will heat exchange with the indoor air to increase the temperature, and output water with a temperature of T1. When the second water mixing valve 5 is opened and the valve opening is adjusted to a suitable degree, the water with a temperature of T1 will be mixed for a second time with the water that has not been heat exchanged by the top radiation heat exchanger to reach the second target mixed water temperature required by the ground radiation heat exchanger 3. In this way, while effectively preventing condensation, it is convenient to ensure that the ground radiation heat exchanger 3 efficiently adjusts the indoor ambient temperature. Furthermore, after the water with the second target mixed water temperature passes through the ground radiation heat exchanger 3, the water in the ground radiation heat exchanger 3 will exchange heat with the ground and indoor objects to increase the temperature, and output water with a temperature of T2. Furthermore, the water with a temperature of T2 will be sent back to the heat pump host 1 through the water outlet pipe of the ground radiation heat exchanger 3, so that the heat pump host 1 can enter the next round of circulation after processing. With this solution, after the radiation air conditioning system starts the cooling mode, water supply with different temperatures can be provided to the ground radiation heat exchanger 3 and the top radiation heat exchanger 2, effectively optimizing the water supply temperature control of the radiation air conditioning system, and improving the comfort of the indoor environment and the operating efficiency of the system.

[0043] Optionally, after the heat pump host 1 starts the heating mode, the heat pump host 1 will produce high-temperature hot water with a temperature of T3. When the first mixing valve 11 and the second mixing valve 5 are in the closed state, the first water collector 23 stops supplying water to the output pipeline of the second mixing valve 5, and the high-temperature hot water output by the heat pump host 1 will be directly supplied to the ground radiation heat exchanger 3. After the water with a temperature of T3 passes through the ground radiation heat exchanger 3, the water in the ground radiation heat exchanger 3 will exchange heat with the ground and indoor objects to cool down, and output water with a temperature of T4. The water with a temperature of T4 will be sent back to the heat pump host 1 through the outlet pipeline of the ground radiation heat exchanger 3, so that the heat pump host 1 can enter the next round of circulation after processing. With this solution, ground radiation can be effectively utilized for heating, saving energy while meeting the indoor ambient temperature requirements.

[0044] Figure 1-2 is a schematic diagram of a method for controlling a radiant air conditioning system provided by an embodiment of the present disclosure; Figure 1-2 As shown, optionally, the embodiment of the present disclosure provides a method for controlling a radiant air conditioning system, comprising:

[0045] S11, the radiant air conditioning system determines a first target mixed water temperature.

[0046] S12, the radiation air conditioning system determines a first target opening of the first water mixing valve according to the water supply temperature of the heat pump host, the water outlet temperature of the ground radiation heat exchanger and the first target mixed water temperature.

[0047] S13, the radiation air conditioning system determines a second target opening of the second mixing water valve according to the first target mixed water temperature and the outlet water temperature of the top radiation heat exchanger.

[0048] S14, when the operation mode is the cooling mode, the radiation air conditioning system controls the first mixing valve to be adjusted to a first target opening and controls the second mixing valve to be adjusted to a second target opening to improve the comfort of the indoor environment.

[0049] In this solution, the radiation air conditioning system can determine the first target mixed water temperature in a variety of ways. In one example, the performance and stability of the radiation air conditioning system at different water supply temperatures can be determined by analyzing the actual operation data, so that the water supply temperature with the highest performance and / or the best stability can be used as the first target mixed water temperature. Among them, the source of the actual operation data can be the operation record, experimental data or simulation results of the radiation air conditioning system. In another example, the radiation air conditioning system can also determine the first target mixed water temperature according to the type of the radiation air conditioning system, the use environment and the specific needs. In an optimized solution, the radiation air conditioning system determines the first target mixed water temperature, including: the radiation air conditioning system obtains the dew point temperature of the room where the radiation air conditioning system is located. The radiation air conditioning system determines the temperature correction value according to the outdoor environmental humidity. The radiation air conditioning system calculates the first target mixed water temperature according to the dew point temperature and temperature correction value of the room where the top radiation heat exchanger is located. With this solution, the first target mixed water temperature can be accurately determined in a variety of ways, providing an accurate data basis for the regulation of the water supply temperature of the top radiation heat exchanger.

[0050] Furthermore, the radiation air conditioning system determines the first target opening of the first water mixing valve according to the water supply temperature of the heat pump main unit, the water outlet temperature of the ground radiation heat exchanger and the first target water mixing temperature, including: the radiation air conditioning system determines the first water mixing ratio according to the water supply temperature of the heat pump main unit, the water outlet temperature of the ground radiation heat exchanger and the first target water mixing temperature. The radiation air conditioning system determines the first target opening of the first water mixing valve according to the first water mixing ratio. With this solution, the accuracy of determining the first target opening can be significantly improved, providing a strong guarantee for the stable operation and energy-saving effect of the radiation air conditioning system.

[0051] Furthermore, the radiation air conditioning system determines the second target opening of the second water mixing valve according to the first target mixed water temperature and the outlet water temperature of the top radiation heat exchanger, including: the radiation air conditioning system determines the second target mixed water temperature. The radiation air conditioning system determines the second mixed water ratio according to the first target mixed water temperature, the outlet water temperature of the top radiation heat exchanger and the second target mixed water temperature. The radiation air conditioning system determines the second target opening of the second water mixing valve according to the second mixed water ratio. With this solution, the second target opening can be accurately determined, providing solid technical support for the intelligent control, efficient operation and user experience of the radiation air conditioning system.

[0052] Furthermore, when the operation mode is the cooling mode, the radiation air conditioning system controls the first mixing valve to be adjusted to the first target opening and controls the second mixing valve to be adjusted to the second target opening to improve the comfort of the indoor environment.

[0053] By adopting the method for controlling the radiant air conditioning system provided by the embodiment of the present disclosure, the water supply temperature of the ground radiant heat exchanger and the top radiant heat exchanger is accurately adjusted by adopting the double water mixing control method, so as to provide the ground radiant heat exchanger and the top radiant heat exchanger with a suitable water supply temperature in the cooling mode. In this way, not only the risk of low-temperature air accumulation and condensation caused by the floor temperature being too low during cooling in summer is avoided, but also the comfort of the indoor environment and the operating efficiency of the radiant air conditioning system are improved, bringing users a more comfortable and healthy indoor environment.

[0054] Figure 2 is a schematic diagram of a method for calculating a first target mixed water temperature provided by an embodiment of the present disclosure; Figure 2 As shown, optionally, S11, the radiant air conditioning system determines a first target mixed water temperature, including:

[0055] S21, the radiant air conditioning system obtains the dew point temperature of the house where the radiant air conditioning system is located.

[0056] S22, the radiation air conditioning system determines a temperature correction value according to the outdoor ambient humidity.

[0057] S23, the radiation air conditioning system calculates a first target mixed water temperature according to the dew point temperature and the temperature correction value of the room where the radiation air conditioning system is located.

[0058] In this solution, the radiant air conditioning system can obtain the dew point temperature of the room where the radiant air conditioning system is located in a variety of ways. In one example, if the radiant air conditioning system is associated with a dew point meter, the dew point meter can be used to detect the dew point temperature of the house where the radiant air conditioning system is located. In another example, multiple high-precision temperature and humidity sensors can be arranged at different locations in the house where the radiant air conditioning system is located to obtain comprehensive temperature and humidity data. In this way, the radiant air conditioning system can use a multi-point compensation algorithm to calculate the average dew point temperature based on the data of each sensor. With this solution, the dew point temperature can be accurately obtained.

[0059] Furthermore, the radiation air conditioning system determines the temperature correction value according to the outdoor environmental humidity, including: when the outdoor environmental humidity is greater than the humidity threshold, the radiation air conditioning system determines the temperature correction value to be a first correction value. When the outdoor environmental humidity is less than the humidity threshold, the radiation air conditioning system determines the temperature correction value to be a second correction value. With this solution, the temperature correction value can be accurately determined in combination with the outdoor environmental humidity, so that the temperature correction value determined in this way is more in line with the changing law of the outdoor environmental temperature.

[0060] Furthermore, the radiation air conditioning system calculates a first target mixed water temperature according to the dew point temperature and the temperature correction value of the room where the radiation air conditioning system is located, including:

[0061] T 1m =Td +a

[0062] Among them, T 1m is the first target mixed water temperature, T d is the dew point temperature of the room where the radiation air conditioning system is located, and a is the temperature correction value. With this scheme, the first target mixed water temperature can be reasonably determined so that the first target mixed water temperature is higher than the dew point temperature by a certain safety margin, effectively avoiding condensation on the surface of the top radiation heat exchanger.

[0063] Optionally, in S22, the radiant air conditioning system determines a temperature correction value according to outdoor ambient humidity, including:

[0064] When the outdoor environment humidity is greater than the humidity threshold, the radiant air conditioning system determines that the temperature correction value is a first correction value.

[0065] When the outdoor ambient humidity is less than the humidity threshold, the radiant air conditioning system determines the temperature correction value to be a second correction value.

[0066] In this solution, the radiant air conditioning system pre-sets a humidity threshold. For example, the humidity threshold may be 60%. The first correction value is greater than the second correction value. As an example, the first correction value is 2°C and the second correction value is 1°C. In this way, when the outdoor ambient humidity is greater than 60%, the radiant air conditioning system determines that the temperature correction value is 2°C. When the outdoor ambient humidity is less than 60%, the radiant air conditioning system determines that the temperature correction value is 1°C. With this solution, the safety margin can be reasonably designed, providing an accurate data basis for determining the first target mixed water temperature.

[0067] Figure 3 is a schematic diagram of a method for determining a first target opening provided by an embodiment of the present disclosure; Figure 3 As shown, optionally, S12, the radiation air conditioning system determines a first target opening of the first water mixing valve according to the water supply temperature of the heat pump host, the water outlet temperature of the ground radiation heat exchanger and the first target mixed water temperature, including:

[0068] S31, the radiation air conditioning system determines a first mixed water ratio according to the water supply temperature of the heat pump host, the water outlet temperature of the ground radiation heat exchanger and the first target mixed water temperature.

[0069] S32: The radiant air conditioning system determines a first target opening of a first water mixing valve according to a first water mixing ratio.

[0070] In this solution, the radiation air conditioning system determines the first mixed water ratio according to the water supply temperature of the heat pump host, the water outlet temperature of the ground radiation heat exchanger and the first target mixed water temperature, including:

[0071]

[0072] Among them, K1 is the first water mixing ratio, T2 is the outlet water temperature of the ground radiation heat exchanger, T0 is the water supply temperature of the heat pump host, T 1m The first target mixed water temperature. With this solution, by accurately considering the water supply temperature of the heat pump main unit, the water outlet temperature of the ground radiation heat exchanger and the first target mixed water temperature, the first mixed water ratio is accurately calculated, providing an accurate data basis for determining the first target opening of the first mixing water valve.

[0073] Furthermore, the radiation air conditioning system can determine the first target opening of the first water mixing valve in combination with the first water mixing ratio. In one way, if the radiation air conditioning system pre-stores a comparison table or correspondence between different water mixing ratios and valve openings, the radiation air conditioning system can match the first target opening of the first water mixing valve in combination with the pre-stored comparison table or correspondence between different water mixing ratios and valve openings. In another way, the radiation air conditioning system can use a fuzzy control algorithm to determine the first target opening of the first water mixing valve. Specifically, the radiation air conditioning system can use the first water mixing ratio as the input of the fuzzy controller so as to use the fuzzy controller for reasoning and decision-making, thereby obtaining the first target opening output by the fuzzy controller. In an optimized scheme, a machine learning algorithm can also be used to determine the first target opening. In this scheme, the first target opening of the first water mixing valve is accurately determined by accurately calculating the first water mixing ratio to achieve precise control of temperature mixing.

[0074] Figure 4 is a schematic diagram of a method for determining a second target opening provided by an embodiment of the present disclosure; Figure 4 As shown, optionally, S13, the radiation air conditioning system determines a second target opening of the second mixing water valve according to the first target mixed water temperature and the outlet water temperature of the top radiation heat exchanger, including:

[0075] S41, the radiant air conditioning system determines a second target mixed water temperature.

[0076] S42, the radiant air conditioning system determines a second mixed water ratio according to the first target mixed water temperature, the outlet water temperature of the top radiation heat exchanger, and the second target mixed water temperature.

[0077] S43: The radiant air conditioning system determines a second target opening of the second water mixing valve according to the second water mixing ratio.

[0078] In this solution, the radiant air conditioning system determines the second target mixed water temperature including: the radiant air conditioning system calculates the actual cooling load according to the heat transfer coefficient of the room where the radiant air conditioning system is located, the set temperature of the room where the radiant air conditioning system is located, and the current temperature of the room where the radiant air conditioning system is located. The radiant air conditioning system calculates the cooling capacity of the top radiant heat exchanger. The radiant air conditioning system determines the second target mixed water temperature according to the difference between the actual cooling load and the cooling capacity of the top radiant heat exchanger. With this solution, the radiant air conditioning system calculates the actual cooling load by accurately considering the heat transfer coefficient of the house, the set temperature and the current temperature difference, and intelligently determines the second target mixed water temperature based on the difference between the actual cooling demand and the cooling capacity, combined with the cooling capacity of the top radiant heat exchanger, thereby achieving a perfect combination of efficient cooling and comfortable temperature control.

[0079] Furthermore, the radiation air conditioning system determines a second mixed water ratio according to the first target mixed water temperature, the outlet water temperature of the top radiation heat exchanger and the second target mixed water temperature, including:

[0080]

[0081] Among them, K2 is the second water mixing ratio, T1 is the outlet water temperature of the top radiation heat exchanger, T0 is the water supply temperature of the heat pump host, T 1m is the first target mixed water temperature, T 2m The second target mixed water temperature. With this solution, by accurately considering the first target mixed water temperature, the outlet water temperature of the top radiation heat exchanger and the second target mixed water temperature, the second mixed water ratio is accurately calculated, providing an accurate data basis for determining the second target opening of the second mixing water valve.

[0082] Furthermore, the radiation air conditioning system determines the second target opening of the second water mixing valve according to the second water mixing ratio. In one way, if the radiation air conditioning system pre-stores a comparison table or corresponding relationship between different water mixing ratios and valve openings, the radiation air conditioning system can match the second target opening of the second water mixing valve in combination with the pre-stored comparison table or corresponding relationship between different water mixing ratios and valve openings. In another way, the radiation air conditioning system can use a fuzzy control algorithm to determine the second target opening of the second water mixing valve. Specifically, the radiation air conditioning system can use the second water mixing ratio as the input of the fuzzy controller so as to use the fuzzy controller for reasoning and decision-making, thereby obtaining the second target opening output by the fuzzy controller. In an optimized scheme, a machine learning algorithm can also be used to determine the second target opening. In this scheme, the second target opening of the second water mixing valve is accurately determined by accurate calculation of the second water mixing ratio to achieve precise control of temperature mixing.

[0083] Optionally, at S41, the radiant air conditioning system determines a second target mixed water temperature, including:

[0084] The radiant air conditioning system calculates the actual cooling load based on the heat transfer coefficient of the room where the radiant air conditioning system is located, the set temperature of the room where the radiant air conditioning system is located, and the current temperature of the room where the radiant air conditioning system is located.

[0085] Calculate the cooling capacity of the top radiant heat exchanger in a radiant air conditioning system.

[0086] The radiation air conditioning system determines the second target mixed water temperature according to the difference between the actual cooling load and the cooling capacity of the top radiation heat exchanger.

[0087] In this scheme, the radiant air conditioning system calculates the actual cooling load based on the heat transfer coefficient of the room where the radiant air conditioning system is located, the set temperature of the room where the radiant air conditioning system is located, and the current temperature of the room where the radiant air conditioning system is located, including:

[0088] Qtotal = b×(T W -T N )

[0089] Among them, Q 总 is the actual cooling load, b is the heat transfer coefficient of the room where the radiant air conditioning system is located, T w is the current temperature of the room where the radiant air conditioning system is located, T N The set temperature of the room where the radiant air conditioning system is located. With this solution, the actual cooling load is calculated in real time by comprehensively considering the heat transfer coefficient, set temperature and current temperature of the room where the radiant air conditioning system is located, which significantly improves the accuracy of the actual cooling load confirmation.

[0090] Furthermore, the radiant air conditioning system calculates the cooling capacity of the top radiant heat exchanger, including:

[0091] Q1=5×10 -8 [(t pj1 +273) 4 -(t fj +273) 4 ]+2.13|t pj1－ t n | 0.31 (t pj1－ t n )

[0092] Among them, Q1 is the cooling capacity of the top radiation heat exchanger, t pj1 is the average temperature of the radiation supply and return water, t fj is the wall temperature of the room where the radiant air conditioning system is located, t n is the set temperature of the room where the radiant air conditioning system is located. With this solution, the cooling capacity of the top radiant heat exchanger can be accurately calculated.

[0093] Furthermore, the radiation air conditioning system determines a second target mixed water temperature according to the difference between the actual cooling load and the cooling capacity of the top radiation heat exchanger, including:

[0094] Q2=5×10 -8 [(t pj2 +273) 4 -(t pj2 +273) 4 ]+0.87(t pj2 -t n ) 1.25

[0095] Where Q2 is the difference between the actual cooling load and the cooling capacity of the top radiation heat exchanger, t pj2 is the average value of the second target mixed water temperature and the outlet water temperature of the ground radiation heat exchanger, t n is the set temperature of the room where the radiation air conditioning system is located. In this way, when the radiation air conditioning system uses a temperature sensor to monitor the outlet water temperature of the ground radiation heat exchanger, the second target mixed water temperature obtained by the above algorithm and the average of the outlet water temperature of the ground radiation heat exchanger and the outlet water temperature of the ground radiation heat exchanger can be used to accurately calculate the second target mixed water temperature. With this solution, the second target mixed water temperature can be accurately determined.

[0096] Optionally, the method further comprises:

[0097] When the operation mode is the heating mode, the radiation air conditioning system controls the radiation air conditioning system to close the first mixing valve and the second mixing valve so that the hot water output by the heat pump host can be directly supplied to the radiation heat exchanger.

[0098] With this solution, the first mixing valve and the second mixing valve are closed in the heating mode of the radiant air-conditioning system, and the hot water output by the heat pump main unit is directly supplied to the ground radiation heat exchanger, which effectively solves the problem of the vertical temperature gradient becoming larger and the discomfort of the human body caused by the simultaneous opening of the top and ground radiation during winter heating. It realizes heating using only ground radiation, thereby improving the comfort and efficiency of heating.

[0099] Figure 5 is a schematic diagram of a device for controlling a radiant air conditioning system provided by an embodiment of the present disclosure; Figure 5As shown, the embodiment of the present disclosure provides a device 200 for controlling a radiation air conditioning system, including a first determination module 51, a second determination module 52, a third determination module 53 and a control module 54. The first determination module 51 is configured to determine a first target mixed water temperature; the second determination module 52 is configured to determine a first target opening of a first mixed water valve according to the water supply temperature of the heat pump host, the outlet water temperature of the ground radiation heat exchanger and the first target mixed water temperature; the third determination module 53 is configured to determine a second target opening of a second mixed water valve according to the first target mixed water temperature and the outlet water temperature of the top radiation heat exchanger; the control module 54 is configured to control the first mixed water valve to be adjusted to the first target opening while controlling the second mixed water valve to be adjusted to the second target opening when the operation mode is the cooling mode, so as to improve the comfort of the indoor environment.

[0100] The device 200 for controlling the radiant air conditioning system provided by the embodiment of the present disclosure adopts a dual water mixing control method to accurately adjust the water supply temperature of the ground radiant heat exchanger and the top radiant heat exchanger, thereby providing a suitable water supply temperature for the ground radiant heat exchanger and the top radiant heat exchanger in the cooling mode. In this way, not only the risk of low-temperature air accumulation and condensation caused by the floor temperature being too low during cooling in summer is avoided, but also the comfort of the indoor environment and the operating efficiency of the radiant air conditioning system are improved, bringing users a more comfortable and healthy indoor environment.

[0101] Figure 6 is another schematic diagram of a device for controlling a radiant air conditioning system provided by an embodiment of the present disclosure; Figure 6 As shown, the embodiment of the present disclosure provides a device 300 for controlling a radiant air conditioning system, including a processor 301 and a memory 302. Optionally, the device 300 may also include a communication interface 303 and a bus 304. The processor 301, the communication interface 303, and the memory 302 may communicate with each other through the bus 304. The communication interface 303 may be used for information transmission. The processor 301 may call the logic instructions in the memory 302 to execute the method for controlling a radiant air conditioning system of the above embodiment.

[0102] In addition, the logic instructions in the memory 302 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0103] The memory 302 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 301 executes functional applications and data processing by running the program instructions / modules stored in the memory 302, that is, implementing the method for controlling the radiant air conditioning system in the above embodiment.

[0104] The memory 302 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 302 may include a high-speed random access memory and may also include a non-volatile memory.

[0105] The embodiments of the present disclosure provide a radiant air conditioning system, comprising: a heat pump main unit, a radiant terminal device, a first water mixing valve, a second water mixing valve, and the above-mentioned device 200 (300) for controlling the radiant air conditioning system. The radiant terminal device comprises a ground radiant heat exchanger and a top radiant heat exchanger. The device 200 (300) for controlling the radiant air conditioning system is installed on the heat pump main unit. The installation relationship described here is not limited to placement inside the product body, but also includes installation connections with other components of the radiant air conditioning system, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the device 200 (300) for controlling the radiant air conditioning system can be adapted to a feasible heat pump main unit, thereby realizing other feasible embodiments.

[0106] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned method for controlling a radiant air conditioning system.

[0107] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0108] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0109] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0110] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0111] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling a radiation air conditioning system, the radiation air conditioning system comprising a radiation terminal device and a first water mixing valve, the radiation terminal device comprising a ground radiation heat exchanger and a top radiation heat exchanger, characterized in that: The radiant air conditioning system further includes a second water mixing valve, and the method includes: determining a first target mixed water temperature; Determining a first target opening of a first water mixing valve according to a water supply temperature of a heat pump host, a water outlet temperature of a ground radiation heat exchanger, and a first target mixed water temperature; Determining a second target opening of the second water mixing valve according to the first target mixed water temperature and the outlet water temperature of the top radiation heat exchanger; When the operation mode is the cooling mode, the first water mixing valve is controlled to be adjusted to the first target opening degree, and the second water mixing valve is controlled to be adjusted to the second target opening degree, so as to improve the comfort of the indoor environment.

2. The method according to claim 1, characterized in that Determine the first target mixed water temperature, including: Get the dew point temperature of the house where the radiant air conditioning system is located; Determine the temperature correction value according to the outdoor environmental humidity; The first target mixed water temperature is calculated according to the dew point temperature and the temperature correction value of the room where the radiation air conditioning system is located.

3. The method according to claim 2, characterized in that Determine the temperature correction value based on the outdoor ambient humidity, including: When the outdoor environment humidity is greater than the humidity threshold, determining the temperature correction value to be a first correction value; When the outdoor environment humidity is less than the humidity threshold, determining the temperature correction value to be a second correction value; The first correction value is greater than the second correction value.

4. The method according to claim 1, characterized in that: Determining a first target opening of a first water mixing valve according to a water supply temperature of a heat pump host, a water outlet temperature of a ground radiation heat exchanger, and a first target mixed water temperature includes: Determining a first mixed water ratio according to the water supply temperature of the heat pump host, the water outlet temperature of the ground radiation heat exchanger, and the first target mixed water temperature; A first target opening of the first water mixing valve is determined according to the first water mixing ratio.

5. The method according to claim 1, characterized in that Determining a second target opening of the second water mixing valve according to the first target mixed water temperature and the outlet water temperature of the top radiation heat exchanger includes: determining a second target mixed water temperature; Determining a second mixed water ratio according to the first target mixed water temperature, the outlet water temperature of the top radiation heat exchanger, and the second target mixed water temperature; A second target opening degree of the second water mixing valve is determined according to the second water mixing ratio.

6. The method according to claim 5, characterized in that Determine the second target mixed water temperature, including: The actual cooling load is calculated based on the heat transfer coefficient of the room where the radiant air conditioning system is located, the set temperature of the room where the radiant air conditioning system is located, and the current temperature of the room where the radiant air conditioning system is located; Calculate the cooling capacity of the top radiation heat exchanger; The second target mixed water temperature is determined according to the difference between the actual cooling load and the cooling capacity of the top radiation heat exchanger.

7. The method according to any one of claims 1 to 6, characterized in that: Also includes: When the operation mode is the heating mode, the radiation air conditioning system is controlled to close the first mixing valve and the second mixing valve so that the hot water output by the heat pump host can be directly supplied to the radiation heat exchanger.

8. A device for controlling a radiant air conditioning system, characterized in that: include: A first determination module is configured to determine a first target mixed water temperature; A second determination module is configured to determine a first target opening of the first water mixing valve according to a water supply temperature of the heat pump host, a water outlet temperature of the ground radiation heat exchanger, and a first target mixed water temperature; A third determination module is configured to determine a second target opening of the second water mixing valve according to the first target mixed water temperature and the outlet water temperature of the top radiation heat exchanger; The control module is configured to control the first mixing valve to be adjusted to a first target opening degree and the second mixing valve to be adjusted to a second target opening degree when the operation mode is a cooling mode, so as to improve the comfort of the indoor environment.

9. A device for controlling a radiant air conditioning system, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to perform the method for controlling a radiant air conditioning system according to any one of claims 1 to 7 when running the program instructions.

10. A radiant air conditioning system, characterized in that: include: Heat pump host; Radiation terminal equipment, including ground radiation heat exchanger and top radiation heat exchanger; First mixing valve; Second mixing valve; The device for controlling a radiant air conditioning system as described in claim 8 or 9 is installed on the heat pump host.

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