Multi-connected system, operation control method, control device and storage medium

Abstract

The invention discloses a multi-split system, an operation control method, a control device and a storage medium. The multi-split system comprises a radiation heat exchange module arranged in a room, a wind disc module and a first sensor used for measuring the internal environment temperature of the room; a second sensor used for measuring the air inlet temperature of the air disc is arranged at an air inlet of the air disc module, and the method comprises the steps that the target temperature of a room is obtained, and the radiation heat exchange module is controlled according to the internal environment temperature and the target temperature; when the operation duration of the radiation heat exchange module reaches a first preset duration, the air disc module is controlled to operate; the air inlet temperature of the air disc is obtained, and temperature compensation is conducted on the internal environment temperature according to the air inlet temperature of the air disc; and the radiation heat exchange module is controlled according to the compensated internal environment temperature and the target temperature. According to the embodiment of the invention, more accurate temperature control can be realized, and the comfort of the multi-connected system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a multi-connected system, an operation control method, a control device and a storage medium. Background Art

[0002] Radiant air conditioners usually lay capillary tubes or radiant panels on the inner surface of the enclosure structure, and reduce or increase the temperature of the inner surface of the enclosure structure through water circulation to form a cold and hot radiant surface, and use the cold and hot radiant surface to exchange heat with the surfaces of the human body, furniture and objects. Radiant air conditioners do not occupy indoor area during installation and there is no strong air convection, so the comfort of users is high. Therefore, some current multi-connected systems use radiant air conditioners as indoor units of traditional air conditioners and install them in each room. However, due to the characteristics of radiant air conditioners, they need to rely on temperature sensors pre-installed in the room to detect the space temperature, and the temperature sensors cannot accurately measure the temperature of the remote environment, that is, it is difficult to accurately measure the ambient temperature in the room. Therefore, the current radiant air conditioners are difficult to accurately maintain the ambient temperature in the room at the required target temperature. Summary of the Invention

[0003] An object of the present invention is to at least solve one of the technical problems existing in the prior art, and provide a multi-connected system, an operation control method, a control device and a storage medium, which can achieve more accurate temperature control and improve the comfort of the multi-connected system.

[0004] In a first aspect, an embodiment of the present invention provides an operation control method for a multi-connected system. The multi-connected system includes a radiation heat exchange module, a fan coil module disposed inside a room, and a first sensor for measuring the internal ambient temperature of the room. A second sensor for measuring the air inlet temperature of the fan coil is disposed at the air inlet of the fan coil module. The method includes:

[0005] Obtain the target temperature of the room, and control the radiation heat exchange module according to the internal ambient temperature and the target temperature;

[0006] When the operation duration of the radiation heat exchange module reaches a first preset duration, control the fan coil module to operate;

[0007] Obtain the air inlet temperature of the fan coil, and perform temperature compensation on the internal ambient temperature according to the air inlet temperature of the fan coil;

[0008] Control the radiation heat exchange module according to the compensated internal ambient temperature and the target temperature.

[0009] The operation control method of the multi-connected system provided by the embodiment of the present invention has at least the following beneficial effects: The radiation heat exchange module is controlled to operate by using the target temperature and the internal environment temperature measured by the first sensor. After operating for the first preset duration, the operation of the air handling unit module is controlled to accelerate the heat flow in the room, which helps to evenly distribute the heat in the room and improve the comfort of the indoor environment. Therefore, the air handling unit inlet temperature measured by the second sensor arranged at the inlet of the air handling unit module can not only reflect the environmental temperature different from the position where the first sensor is located, but also roughly reflect the actual temperature situation in the room. Furthermore, the air handling unit inlet temperature can be used to perform temperature compensation on the internal environment temperature. By combining the temperature of the flowing air in the room and the environmental temperatures at different positions, the compensated internal environment temperature can be closer to the actual environmental temperature in the room, reflecting the heat radiation situation in the room. Thus, more accurate parameters can be obtained for more precise temperature control, which helps to maintain the environmental temperature in the room at the target temperature and achieve a more accurate temperature control effect.

[0010] In the operation control method provided by the embodiment of the present invention, the temperature compensation of the internal environment temperature according to the air handling unit inlet temperature includes:

[0011] Performing temperature compensation on the internal environment temperature according to the difference between the air handling unit inlet temperature and the internal environment temperature.

[0012] In the operation control method provided by the embodiment of the present invention, the obtaining of the air handling unit inlet temperature includes:

[0013] When the operation duration of the air handling unit module reaches the second preset duration, obtaining the air handling unit inlet temperature.

[0014] In the operation control method provided by the embodiment of the present invention, the obtaining of the air handling unit inlet temperature includes:

[0015] When the operation duration of the air handling unit module reaches the second preset duration, controlling the air handling unit module to stop operating and obtaining the air handling unit inlet temperature.

[0016] In the operation control method provided by the embodiment of the present invention, after the temperature compensation of the internal environment temperature according to the air handling unit inlet temperature, the operation control method further includes:

[0017] Every third preset duration, controlling the air handling unit module to operate and re-obtaining the air handling unit inlet temperature to re-perform temperature compensation on the internal environment temperature.

[0018] In the operation control method provided by the embodiment of the present invention, the radiation heat exchange module includes a refrigeration heat exchange coil disposed on the wall or roof of the room. When the room operates in the refrigeration mode and the internal environment temperature reaches the dew point temperature of the room, the air handling unit module is controlled to operate in the dehumidification mode.

[0019] In the operation control method provided by the embodiment of the present invention, when the internal environment temperature reaches the dew point temperature of the room, the heat exchange power of the refrigeration heat exchange coil is reduced.

[0020] In the operation control method provided by the embodiment of the present invention, when the internal environment temperature is higher than the dew point temperature, the air handling unit module is controlled to continue operating for a fourth preset duration and then stop operating, and the heat exchange power of the refrigeration heat exchange coil is controlled to recover to the power before the decrease.

[0021] In a second aspect, an embodiment of the present invention provides an operation control device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor executes the program to implement the operation control method of the multi-connected system as described in the first aspect embodiment above.

[0022] According to the operation control device provided by the embodiment of the present invention, it has at least the following beneficial effects: The radiation heat exchange module is controlled to operate by using the target temperature and the internal environment temperature measured by the first sensor. After operating for a first preset duration, the operation of the air handling unit module is controlled to accelerate the heat flow in the room, which helps to evenly distribute the heat in the room and improve the comfort of the indoor environment. Therefore, the air handling unit inlet air temperature measured by the second sensor disposed at the inlet of the air handling unit module can not only reflect the environmental temperature different from the position where the first sensor is located, but also roughly reflect the actual temperature situation in the room. Furthermore, the air handling unit inlet air temperature can be used to perform temperature compensation on the internal environment temperature. By combining the temperature of the flowing air in the room and the environmental temperatures at different positions, the compensated internal environment temperature can be closer to the actual environmental temperature in the room, reflecting the heat radiation situation in the room. Thus, more accurate parameters can be obtained for more precise temperature control, which helps to maintain the environmental temperature in the room at the target temperature and achieve a more accurate temperature control effect.

[0023] In a third aspect, an embodiment of the present invention provides a multi-connected system, including a radiation heat exchange module, an air handling unit module disposed inside the room, and a first sensor for measuring the internal environment temperature of the room. A second sensor for measuring the air handling unit inlet air temperature is disposed at the inlet of the air handling unit module, and it further includes the operation control device as described in the second aspect embodiment above.

[0024] The multi - connection system provided by the embodiments of the present invention has at least the following beneficial effects: The operation of the radiation heat exchange module is controlled by using the target temperature and the internal environment temperature measured by the first sensor. After running for the first preset duration, the operation of the air handling unit module is controlled to accelerate the heat flow in the room, which helps to evenly distribute the heat in the room and improve the comfort of the indoor environment. Therefore, the air handling unit inlet temperature measured by the second sensor arranged at the air inlet of the air handling unit module can not only reflect the environmental temperature different from the position where the first sensor is located, but also roughly reflect the actual temperature situation in the room. Furthermore, the air handling unit inlet temperature can be used to perform temperature compensation on the internal environment temperature. By combining the temperature of the flowing air in the room and the environmental temperatures at different positions, the compensated internal environment temperature can be closer to the actual environmental temperature in the room, reflecting the heat radiation situation in the room. Thus, more accurate parameters can be obtained for more precise temperature control, which helps to maintain the environmental temperature in the room at the target temperature and achieve a more accurate temperature control effect.

[0025] In the multi - connection system provided by the embodiments of the present invention, the radiation heat exchange module includes a refrigeration heat exchange coil arranged on the wall or roof of the room and a floor heating heat exchange coil arranged on the floor of the room. The multi - connection system further includes a dew - point sensor arranged at the wall or roof corresponding to the refrigeration heat exchange coil.

[0026] In a fourth aspect, the embodiments of the present invention provide a computer - readable storage medium storing computer - executable instructions for causing a computer to execute the operation control method of the multi - connection system as described in the first - aspect embodiments above.

[0027] The computer - readable storage medium provided by the embodiments of the present invention has at least the following beneficial effects: The operation of the radiation heat exchange module is controlled by using the target temperature and the internal environment temperature measured by the first sensor. After running for the first preset duration, the operation of the air handling unit module is controlled to accelerate the heat flow in the room, which helps to evenly distribute the heat in the room and improve the comfort of the indoor environment. Therefore, the air handling unit inlet temperature measured by the second sensor arranged at the air inlet of the air handling unit module can not only reflect the environmental temperature different from the position where the first sensor is located, but also roughly reflect the actual temperature situation in the room. Furthermore, the air handling unit inlet temperature can be used to perform temperature compensation on the internal environment temperature. By combining the temperature of the flowing air in the room and the environmental temperatures at different positions, the compensated internal environment temperature can be closer to the actual environmental temperature in the room, reflecting the heat radiation situation in the room. Thus, more accurate parameters can be obtained for more precise temperature control, which helps to maintain the environmental temperature in the room at the target temperature and achieve a more accurate temperature control effect.

[0028] Other features and advantages of the present invention will be described in the following specification, and will be, in part, apparent from the specification or understood by practicing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures particularly pointed out in the specification, claims, and drawings. Description of the Drawings

[0029] The drawings are used to provide a further understanding of the technical solution of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0030] The present invention will be further described below in conjunction with the drawings and embodiments;

[0031] Figure 1 is a partial structural schematic diagram of a multi - connection system installed in a room provided by an embodiment of the present invention;

[0032] Figure 2 is a flowchart of an operation control method of a multi - connection system provided by an embodiment of the present invention;

[0033] Figure 3 is provided by an embodiment of the present invention Figure 2 specific step diagram of the shown step S130;

[0034] Figure 4 is provided by another embodiment of the present invention Figure 2 specific step diagram of the shown step S130;

[0035] Figure 5 is provided by another embodiment of the present invention Figure 2 specific step diagram of the shown step S130;

[0036] Figure 6 is provided by an embodiment of the present invention Figure 2 specific step diagram after the shown step S130;

[0037] Figure 7 is provided by an embodiment of the present invention Figure 2 specific step diagram before the shown step S110;

[0038] Figure 8 is provided by an embodiment of the present invention Figure 2 specific step diagram before the shown step S110;

[0039] Figure 9 is provided by an embodiment of the present invention Figure 8 specific step diagram after the shown step S101;

[0040] Figure 10It is a schematic structural diagram of an operation control device provided by an embodiment of the present invention. Detailed implementation manners

[0041] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be construed as a limitation on the protection scope of the present invention.

[0042] In the description of the present invention, if the first and the second are described, it is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", and "connected" should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0044] A multi-connected system generally refers to a system that provides heating or cooling services for different spaces through an air-conditioning system with multiple indoor units. Since radiant air conditioning exchanges heat with the indoor environment by means of capillary tubes or radiant panels installed in the building envelope through radiation, directly acting on the surface of objects or the human body, and has strong comfort, currently, the multi-connected system usually adopts radiant air conditioning as the indoor unit to adjust the air in each room. Since the temperature measurement of the environment where the radiant air conditioning is located depends on a fixedly installed temperature sensor, but the temperature sensor can only detect the temperature of the environment near the sensor itself, it is difficult to accurately measure the actual environmental temperature in the entire room. Therefore, the current radiant air conditioning is difficult to accurately maintain the environmental temperature in the room at the required target temperature.

[0045] Based on this, embodiments of the present invention provide a multi-connected system, an operation control method, an operation control device, and a storage medium. The radiation heat exchange module is controlled to operate using the target temperature and the internal environment temperature measured by the first sensor. After operating for the first preset duration, the operation of the air handling unit module is controlled to accelerate the heat flow in the room, which helps to evenly distribute the heat in the room and improve the comfort of the indoor environment. Therefore, the air handling unit inlet temperature measured by the second sensor provided at the inlet of the air handling unit module can not only reflect the environmental temperature different from the position where the first sensor is located, but also roughly reflect the actual temperature situation in the room. Furthermore, the air handling unit inlet temperature can be used to compensate the internal environment temperature. By combining the temperature of the flowing air in the room and the environmental temperatures at different positions, the compensated internal environment temperature can be closer to the actual environmental temperature in the room, reflecting the heat radiation situation in the room. Thus, more accurate parameters can be obtained for more precise temperature control, which helps to maintain the environmental temperature in the room at the target temperature and achieve a more accurate temperature control effect.

[0046] The following further elaborates on the embodiments of the present invention with reference to the accompanying drawings.

[0047] Refer to Figure 1 , which is a partial structural schematic diagram of a multi-connected system installed in a room provided by the first aspect embodiment of the present invention.

[0048] It can be understood that the multi-connected system includes a host, a connecting valve, a manifold, and multiple radiation air conditioning systems installed in the room. Among them, the host is respectively connected to each radiation air conditioning system, and each radiation air conditioning system includes a radiation heat exchange module, an air handling unit module, and a first sensor 110. The radiation heat exchange module can be installed on the inner surface of the building envelope in the room, such as the ceiling, floor, or wall of the room. As Figure 1 shown, the radiation heat exchange module can be installed at the ceiling of the room; and the air handling unit module can be installed near the top of the room, i.e., the ceiling, so as to reduce the wind feeling while accelerating the air flow in the room. The air handling unit module can include an inlet 120, an outlet 130, and a second sensor. The second sensor can be installed at the inlet 120 to measure the air handling unit inlet temperature of the room; the first sensor 110 can be installed in the room to measure the internal environment temperature of the room, such as on the wall. In addition, the radiation air conditioning system can also include a control module. The control module can be respectively connected to the first sensor 110, the second sensor, the radiation heat exchange module, the air handling unit module, and the host. The control module can obtain the temperatures measured by the first sensor 110 and the second sensor, and can receive the target temperature of the current room. Based on the relevant temperature data, the radiation heat exchange module, the air handling unit module, and the host are regulated to make the actual environmental temperature in the room approach and stabilize at the target temperature.

[0049] However, due to the characteristics of the sensor, the first sensor 110 can only measure the temperature around its own environment relatively accurately, and it is difficult to measure the environmental temperature at a position far from the first sensor 110. Therefore, when the room space is large, the internal environmental temperature measured by the first sensor 110 is likely to deviate, making it difficult to accurately obtain the actual environmental temperature in the room, and thus unable to maintain the actual environmental temperature in the room at the target temperature. Therefore, in view of the above problems, in the embodiments of the present invention, on the basis of a conventional radiant air-conditioning system, an air handling unit module is added. The air inlet 120 and the air outlet 130 in the air handling unit module are used to accelerate the air flow in the room in a short time, so that the heat distribution in the room is uniform. At the same time, the second sensor is used to measure the return air temperature at the air inlet 120 to obtain the air handling unit inlet air temperature, so that the approximate actual temperature situation in the current room can be reflected by the air handling unit inlet air temperature. Furthermore, the internal environmental temperature measured by the first sensor 110 can be compensated by the air handling unit inlet air temperature, so that the compensated internal environmental temperature can be close to the actual environmental temperature in the room, which is beneficial to achieving more accurate temperature control.

[0050] It can be understood that the radiation heat exchange module in the radiant air-conditioning system may include a refrigeration heat exchange coil 140 provided on the wall or ceiling of the room, and may also include a floor heating heat exchange coil 150 provided on the wall or floor of the room. When the room operates in different modes, the refrigeration heat exchange coil 140 and the floor heating heat exchange coil 150 exchange heat with the air in the room respectively to adjust the temperature in the room.

[0051] It can be understood that the radiant air-conditioning system further includes a dew point sensor 160. The dew point sensor 160 can be installed close to the refrigeration heat exchange coil 140, and the dew point sensor 160 can detect the dew point temperature inside the room. Since when the room operates in the cooling mode, the refrigeration heat exchange coil 140 exchanges heat to reduce the inner surface temperature of the enclosure structure where the refrigeration heat exchange coil 140 is located, and condensation is likely to occur when the internal environmental temperature is lower than the dew point temperature, which not only affects the heat exchange efficiency, but also the dripping of dew is likely to affect the user experience. Therefore, by setting the dew point sensor 160 to detect the condensation situation in the room in real time, the occurrence of condensation in the room that affects the user experience can be reduced.

[0052] Those skilled in the art can understand that Figure 1 the structure of the multi-connected system shown in

[0053] does not limit the embodiments of the present invention, and may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements.

[0054] Referring to Figure 2 ,Figure 2 is a flowchart of an operation control method for a multi-connected system provided by an embodiment of the present invention. The operation control method for the multi-connected system can be applied to a multi-connected system as shown in Figure 1 the multi-connected system shown below. The operation control method includes but is not limited to steps S110, S120, S130, and S140:

[0055] Step S110: Obtain the target temperature of the room, and control the radiation heat exchange module according to the internal environmental temperature and the target temperature;

[0056] Step S120: When the operation duration of the radiation heat exchange module reaches the first preset duration, control the air handling unit module to operate;

[0057] Step S130: Obtain the air inlet temperature of the air handling unit, and perform temperature compensation on the internal environmental temperature according to the air inlet temperature of the air handling unit;

[0058] Step S140: Control the radiation heat exchange module according to the compensated internal environmental temperature and the target temperature.

[0059] It can be understood that the target temperature refers to the temperature level that the room currently expects to maintain. The target temperature can be obtained by receiving an external input control signal through the control module of the radiation air-conditioning system (such as by the user operating through a knob, a button in the control module, or an application on an intelligent device connected to the control module).

[0060] When the radiation air-conditioning system of the room operates, the target temperature of the room and the internal environmental temperature measured by the first sensor can be obtained, and the operation of the radiation heat exchange module can be controlled according to the internal environmental temperature and the target temperature, so that the internal environmental temperature approaches and maintains the target temperature. Among them, the operation power or operation duration of the radiation heat exchange module can be controlled according to the magnitude relationship between the internal environmental temperature and the target temperature or the difference between the two. It should be noted that the target temperature and the internal environmental temperature can be re-obtained at intervals of a preset duration to update the temperature data.

[0061] When the running duration of the radiation heat exchange module reaches the first preset duration, control the air handling unit module to operate, accelerate the air flow inside the room through the air handling unit module, improve the temperature regulation ability of the multi-connected system in the room, and enable the heat released by the radiation heat exchange module to be evenly distributed in the room. Then, the air handling unit inlet air temperature of the second sensor can be obtained. Since the air flow inside the room is weak before the air handling unit module operates, the first sensor can only obtain the temperature of its surrounding environment and it is difficult to accurately measure the temperature at a position far from itself, that is, there is a deviation between the internal environment temperature measured by the first sensor and the actual environment temperature of the whole room, and the internal environment temperature cannot accurately represent it; while after the air handling unit module operates, the air flow inside the room is strengthened, and the air that was originally far from the first sensor can flow to the vicinity of the first sensor, and the heat is evenly distributed. Thus, the internal environment temperature measured by the first sensor can be closer to the actual environment temperature of the whole room, improving the data accuracy of the internal environment temperature, which is beneficial for more accurate temperature control.

[0062] Meanwhile, obtain the air handling unit inlet air temperature through the second sensor. The air handling unit inlet air temperature can not only reflect the environmental temperature different from the position where the first sensor is located, but also can generally reflect the actual temperature situation in the room. Furthermore, the air handling unit inlet air temperature can be used to compensate the internal environment temperature. By combining the temperature of the flowing air in the room and the environmental temperatures at different positions, the compensated internal environment temperature can be closer to the actual environment temperature in the room, reflecting the heat radiation situation in the room, so that more accurate parameters can be obtained for more precise temperature control. Therefore, every time the first preset duration elapses, operate the air handling unit module to strengthen the air flow inside the room, make the heat in the room uniform, and then the internal environment temperature can be compensated through the air handling unit inlet air temperature, that is, temperature compensation is performed using the temperature parameters obtained by sensors at different positions, and the temperature of the flowing air is used to compensate the temperature at a fixed environmental position. The temperature parameters obtained after compensation can more accurately reflect the actual environment temperature inside the room, which helps to maintain the environmental temperature in the room at the target temperature and achieve a more accurate temperature control effect.

[0063] Refer to Figure 3 , in the operation control method provided in the embodiment of the present invention, in Figure 2 the step S130 shown in

[0064] Step S130 includes step S131:

[0065] It can be understood that since the air flow inside the room and the temperature distribution at different positions are important factors causing temperature differences in the room, by calculating the difference between the air inlet temperature of the air handling unit and the internal environment temperature and using the difference for compensation, the temperature difference between the air inlet of the air handling unit module and the entire interior of the room can be fully considered, and the approximate temperature situation of the current room can be obtained more accurately, which helps to understand the temperature deviation indoors and thus improve the accuracy of temperature adjustment.

[0066] It should be noted that multiple differences between the air inlet temperature of the air handling unit at multiple moments and the same internal environment temperature can be compared, and multiple differences are used to compensate the internal environment temperature, which can more comprehensively consider the changes in the internal temperature distribution and air flow in the room and help improve the accuracy of temperature adjustment.

[0067] It should be noted that after calculating the difference between the air inlet temperature of the air handling unit and the internal environment temperature, the internal environment temperature can be directly compensated using the difference, so that the compensated internal environment temperature is equal to the current air inlet temperature of the air handling unit, which is equivalent to using the air inlet temperature of the air handling unit to represent the overall temperature distribution in the room, and the radiation heat exchange module is controlled using the air inlet temperature of the air handling unit and the target temperature. Additionally, a compensation coefficient can be obtained, the compensation coefficient and the difference are multiplied to obtain a compensation temperature, and then the internal environment temperature is compensated using the compensation temperature. Specifically, an addition operation can be performed on the compensation temperature and the internal environment temperature to obtain the compensated internal environment temperature. Among them, the compensation coefficient can be a fixed value (such as 0.5), can be determined according to the magnitude of the difference between the air inlet temperature of the air handling unit and the internal environment temperature (for example, as the difference increases, the compensation coefficient also increases), or can be determined according to the respective operating durations of the radiation heat exchange module and the air handling unit module.

[0068] Refer to Figure 4 , in the operation control method provided in the embodiment of the present invention, in Figure 2 the step S130 shown in

[0069] Step S132: When the operating duration of the air handling unit module reaches the second preset duration, obtain the air inlet temperature of the air handling unit and perform temperature compensation on the internal environment temperature according to the air inlet temperature of the air handling unit.

[0070] It can be understood that when the air handling unit module operates, it can accelerate the air flow inside the room. When the operating duration of the air handling unit module reaches the second preset duration, it can be considered that the air flow in the room tends to be stable and the heat transfer is uniform. Therefore, the air inlet temperature of the air handling unit can be obtained, which can more accurately reflect the overall actual temperature situation in the room and improve the precision of temperature control.

[0071] Refer to Figure 5, in the operation control method provided by the embodiments of the present invention, in Figure 2 in the shown step S130, step S130 includes step S133:

[0072] Step S133: When the operation duration of the air handling unit module reaches a second preset duration, control the air handling unit module to stop operating, and obtain the air inlet temperature of the air handling unit.

[0073] It can be understood that since air flow will be generated when the air handling unit module is operating, which is likely to cause a sense of wind and affect the user experience. Therefore, when the operation duration of the air handling unit module reaches the second preset duration, that is, when it is considered that the heat transfer in the room is uniform, the air handling unit module can be stopped from blowing air, and the air inlet temperature of the air handling unit at the air inlet can be measured. At this time, the air flow velocity in the room slows down, and the temperature diffusion also slows down accordingly. Thus, the obtained air inlet temperature of the air handling unit can more accurately reflect the temperature distribution of the air in the room, which helps to more accurately compensate the internal environment temperature.

[0074] It should be noted that the air inlet temperature of the air handling unit can be measured while the air handling unit module stops blowing air; or timing can be started while the air handling unit module stops blowing air, and when the timing reaches a fourth preset duration, the air inlet temperature of the air handling unit is obtained. Specifically, when the stop duration of the air handling unit module stops blowing air reaches the fourth preset duration, it can be considered that the air in the room has stopped flowing, which can reduce the influence of air flow on the temperature, and thus more accurate temperature data can be obtained.

[0075] Referring to Figure 6 , in the operation control method provided by the embodiments of the present invention, after the step S130 shown in Figure 2 the operation control method further includes step S134:

[0076] Step S134: Every third preset duration, control the air handling unit module to operate and re-obtain the air inlet temperature of the air handling unit.

[0077] It can be understood that after compensating the internal environment temperature, timing starts. Whenever the timing duration reaches the third preset duration, if the air handling unit module is in the operating state, maintain the operation of the air handling unit module and continue to blow air to accelerate the air flow; if the air handling unit module is in the shutdown state, control the air handling unit module to restart. At the same time, whenever the timing duration reaches the third preset duration, re-obtain the air inlet temperature of the air handling unit and clear the timing duration again. By re-obtaining the air inlet temperature of the air handling unit, the temperature distribution of the room can be understood in a timely manner, and then the multi-connected system can be re-compensated for temperature, which helps to achieve more accurate temperature control and keep the actual environment temperature in the room stable at the target temperature.

[0078] It should be noted that if the timing duration reaches the third preset duration and the air handling unit module is in the operating state, the supply air temperature of the air handling unit can be re-acquired while maintaining the operation of the air handling unit module, or timing can be restarted. When the timing duration reaches the second preset duration, the supply air temperature of the air handling unit is re-acquired. If the timing duration reaches the third preset duration and the air handling unit module is in the stopped state, the supply air temperature of the air handling unit can be re-acquired after the air handling unit module has been restarted for the second preset duration, and at the same time, the air handling unit module is controlled to stop.

[0079] It should be noted that the third preset duration can be equal to the second preset duration, so as to achieve periodic temperature regulation and detection.

[0080] Referring to Figure 7 , in the operation control method provided by the embodiment of the present invention, before the step S110 shown in Figure 2 , the operation control method further includes a step S100:

[0081] Step S100: When the room is operating in the cooling mode and the internal environment temperature reaches the dew point temperature of the room, control the air handling unit module to operate in the dehumidification mode.

[0082] It can be understood that when the room is operating in the cooling mode, that is, the cooling heat exchange coil installed on the wall or ceiling of the room exchanges heat with the air in the room to reduce the air temperature in the room. Although the air handling unit module can accelerate the air flow in the room, since the operation duration of the air handling unit module accounts for a relatively small proportion of the total operation duration of the multi-connected system, the air flow in the room is weak for a long time, and the air pressure, humidity and temperature change. As the cooling heat exchange coil continuously exchanges heat and the room temperature drops, dew is likely to condense on the inner surface of the enclosure structure (i.e., the wall or roof) where the cooling heat exchange coil is located. Therefore, the dew point temperature of the room can be obtained, and by comparing the dew point temperature with the internal environment temperature, the condensation risk in the room can be judged, and then the operation mode of the air handling unit module can be controlled.

[0083] When the dew point temperature is lower than the internal environment temperature, it can be considered that there is no condensation risk in the current room and no dehumidification is required. Therefore, the cooling mode of the room can be maintained, that is, the air handling unit module operates according to the current operation mode. When the dew point temperature is higher than or equal to the internal environment temperature, it can be considered that there is a condensation risk in the current room, and it is necessary to control the air handling unit module to operate in the dehumidification mode. Specifically, the air handling unit module operating in the dehumidification mode may refer to adjusting the air outlet direction and air volume of the air handling unit module. By adjusting the air outlet direction of the air handling unit module, the low-temperature air around the cooling heat exchange coil can be evenly dispersed into the internal space of the room to accelerate the dehumidification process. At the same time, the air volume can be increased to enhance the air flow and accelerate the mixing of the low-temperature air around the cooling heat exchange coil and the air inside the room, improving the dehumidification effect.

[0084] Among them, the dew point temperature can be obtained through a pre-set dew point sensor, and the dew point sensor can be installed on the inner surface of the same enclosure as the refrigeration heat exchange coil; or the dew point temperature can be calculated from the humidity and the internal environment temperature in the room, and the humidity can be obtained through a pre-set humidity sensor in the room.

[0085] It should be noted that before the multi-connected system obtains the air inlet temperature of the air handling unit and compensates the internal environment temperature according to the air inlet temperature of the air handling unit, it is also necessary to obtain the internal environment temperature and the dew point temperature, compare the internal environment temperature and the dew point temperature, and determine whether there is a risk of condensation in the current room. If there is a risk of condensation in the current room, the temperature compensation of the internal environment temperature using the air inlet temperature of the air handling unit is stopped, and instead, the multi-connected system operates in the dehumidification mode until the risk of condensation in the current room is eliminated, and then the temperature compensation of the internal environment temperature is performed using the air inlet temperature of the air handling unit.

[0086] Refer to Figure 8 , in the operation control method provided by the embodiment of the present invention, before Figure 2 the step S110 shown, the operation control method further includes a step S101:

[0087] Step S101: When the room is operating in the refrigeration mode and the internal environment temperature reaches the dew point temperature of the room, reduce the heat exchange power of the refrigeration heat exchange coil.

[0088] It can be understood that when the room operates in the refrigeration mode and the internal environment temperature drops to the dew point temperature, the moisture in the air in the room is likely to condense into water droplets, and there is a risk of condensation in the room. If the refrigeration heat exchange coil still operates at the current power, the condensation is likely to accumulate and cause a dripping phenomenon, seriously affecting the user experience. Therefore, the multi-connected system can be controlled to operate in the dehumidification mode to reduce the heat exchange power of the refrigeration heat exchange coil, thereby reducing the cooling capacity output by the refrigeration heat exchange coil, slowing down the trend of the internal environment temperature drop, and avoiding excessive condensation of moisture on the inner surface of the enclosure (such as the roof or wall) where the refrigeration heat exchange coil is located. Specifically, the operating frequency of the compressor in the multi-connected system can be reduced, or the valve opening of the manifold for separating and collecting water between the compressor and the refrigeration heat exchange coil in the multi-connected system can be controlled to reduce the flow rate of water flowing through the refrigeration heat exchange coils, thereby achieving the reduction of the heat exchange power of the refrigeration heat exchange coil.

[0089] It should be noted that when the heat exchange power of the refrigeration heat exchange coil is reduced, that is, when the refrigeration heat exchange coil is in the dehumidification mode, the air handling unit module can operate in the dehumidification mode at the same time.

[0090] Refer to Figure 9 , in the operation control method provided by the embodiment of the present invention, in Figure 8After the step S101 shown, the operation control method further includes a step S102:

[0091] Step S102: When the internal environment temperature is higher than the dew point temperature, control the air handling unit module to continue running for a fourth preset duration and then stop running, and control the heat exchange power of the refrigeration heat exchange coil to recover to the power before the decrease.

[0092] It can be understood that in the case where the air handling unit module operates in the dehumidification mode or the refrigeration heat exchange coil operates in the dehumidification mode, the internal environment temperature gradually rises. When the internal environment temperature is higher than the dew point temperature, that is, the internal environment temperature no longer reaches the dew point temperature, the air handling unit module can continue to operate and start timing. When the timing duration reaches the fourth preset duration, control the air handling unit module to stop. If the refrigeration heat exchange coil is in the dehumidification mode when the internal environment temperature is lower than or equal to the dew point temperature, that is, the heat exchange power of the refrigeration heat exchange coil is reduced to increase the internal environment temperature, then when the internal environment temperature no longer reaches the dew point temperature, control the heat exchange power of the refrigeration heat exchange coil to recover to the power before the decrease. Among them, when the internal environment temperature is higher than the dew point temperature, the refrigeration heat exchange coil can continue to operate in the low-power state for a fourth preset duration, and then the heat exchange power of the refrigeration heat exchange coil is recovered to the power before the decrease.

[0093] In a second aspect, referring to Figure 10 , Figure 10 is a schematic structural diagram of an operation control device provided by an embodiment of the present invention. An embodiment of the present invention provides an operation control device 1000, including a memory 1020, a processor 1010, and a computer program stored on the memory 1020 and executable on the processor 1010. The processor 1010 executes the program to implement the operation control method of the multi-connected system in the first aspect embodiment above. For example, execute Figure 2 the method steps S110 to S140 in Figure 3 , or execute Figure 4 the method step S131 in Figure 5 , or execute Figure 6 the method step S132 in Figure 7 , or execute Figure 8 the method step S133 in Figure 9 , or execute

[0094] According to the operation control device provided by the embodiments of the present invention, the operation of the radiation heat exchange module is controlled by using the target temperature and the internal environment temperature measured by the first sensor. After running for the first preset duration, the operation of the air handling unit module is controlled to accelerate the heat flow in the room, which helps to evenly distribute the heat in the room and improve the comfort of the indoor environment. Therefore, the air handling unit inlet temperature measured by the second sensor arranged at the air inlet of the air handling unit module can not only reflect the environmental temperature different from the position where the first sensor is located, but also roughly reflect the actual temperature situation in the room. Furthermore, the air handling unit inlet temperature can be used to perform temperature compensation on the internal environment temperature. By combining the temperature of the flowing air in the room and the environmental temperatures at different positions, the compensated internal environment temperature can be closer to the actual environmental temperature in the room, reflecting the heat radiation situation in the room. Thus, more accurate parameters can be obtained for more precise temperature control, which helps to maintain the environmental temperature in the room at the target temperature and achieve a more accurate temperature control effect.

[0095] In a third aspect, an embodiment of the present invention provides a multi-connected system, including a radiation heat exchange module, an air handling unit module arranged inside the room, and a first sensor for measuring the internal environment temperature of the room. A second sensor for measuring the air handling unit inlet temperature is arranged at the air inlet of the air handling unit module, and it further includes the operation control device as described in the second aspect embodiment above.

[0096] According to the multi-connected system provided by the embodiments of the present invention, it has at least the following beneficial effects: The operation of the radiation heat exchange module is controlled by using the target temperature and the internal environment temperature measured by the first sensor. After running for the first preset duration, the operation of the air handling unit module is controlled to accelerate the heat flow in the room, which helps to evenly distribute the heat in the room and improve the comfort of the indoor environment. Therefore, the air handling unit inlet temperature measured by the second sensor arranged at the air inlet of the air handling unit module can not only reflect the environmental temperature different from the position where the first sensor is located, but also roughly reflect the actual temperature situation in the room. Furthermore, the air handling unit inlet temperature can be used to perform temperature compensation on the internal environment temperature. By combining the temperature of the flowing air in the room and the environmental temperatures at different positions, the compensated internal environment temperature can be closer to the actual environmental temperature in the room, reflecting the heat radiation situation in the room. Thus, more accurate parameters can be obtained for more precise temperature control, which helps to maintain the environmental temperature in the room at the target temperature and achieve a more accurate temperature control effect.

[0097] It can be understood that the radiation heat exchange module in the radiation air-conditioning system may include a refrigerating heat exchange coil disposed on the wall or ceiling of the room, and may also include a floor heating heat exchange coil disposed on the wall or floor of the room. When the room operates in different modes, the refrigerating heat exchange coil and the floor heating heat exchange coil exchange heat with the air in the room respectively to adjust the temperature in the room. Specifically, when the room operates in the refrigerating mode, the refrigerating heat exchange coil works and exchanges heat with the air in the room to lower the temperature of the air in the room, while when the room operates in the heating mode, the floor heating heat exchange coil works and exchanges heat with the air in the room to raise the temperature of the air in the room.

[0098] It can be understood that the radiation air-conditioning system further includes a dew point sensor. The dew point sensor can be installed close to the refrigerating heat exchange coil, and the dew point sensor can detect the dew point temperature inside the room. Since when the room operates in the refrigerating mode, the refrigerating heat exchange coil exchanges heat to lower the inner surface temperature of the enclosure structure where the refrigerating heat exchange coil is located, and condensation is likely to occur when the internal environment temperature is lower than the dew point temperature, which not only affects the heat exchange efficiency, but also the dripping of dew is likely to affect the user experience. Therefore, by setting the dew point sensor to detect the condensation situation in the room in real time, the condensation in the room that affects the user experience can be reduced.

[0099] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for causing a computer to execute the operation control method of the multi-connected system in the first aspect embodiment above, for example, to execute Figure 2 method steps S110 to S140 in, or execute Figure 3 method step S131 in, or execute Figure 4 method step S132 in, or execute Figure 5 method step S133 in, or execute Figure 6 method step S134 in, or execute Figure 7 method step S100 in, or execute Figure 8 method step S101 in, or execute Figure 9 method step S102 in.

[0100] According to the computer-readable storage medium provided by the embodiments of the present invention, by monitoring the actual exhaust temperature of the compressor in real time when the target exhaust temperature is in a stable state, and adjusting the opening degree of the electronic expansion valve based on the actual exhaust temperature every first time period, the actual exhaust temperature of the compressor can approach the target exhaust temperature. Since the change of the actual exhaust temperature has hysteresis, and using the change trend of the actual exhaust temperature within the second time period to adjust the first time period can provide an appropriate time period after adjusting the electronic expansion valve for the actual exhaust temperature to tend to be stable, which helps to reduce the change fluctuation phenomenon of the electronic expansion valve caused by the fluctuation of the actual exhaust temperature, and can accelerate the opening degree of the electronic expansion valve to tend to be stable while accelerating the actual exhaust temperature to be stable at the target exhaust temperature, so that the air conditioner can quickly meet the required target operating conditions and improve the reliability of the air conditioner operation.

[0101] Those of ordinary skill in the art can understand that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware and their appropriate combinations. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium or a non-transitory medium and a communication medium or a transitory medium. As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules or other data. The computer storage medium includes but is not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc DVD or other optical disc storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that the communication medium generally includes computer-readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0102] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A method for controlling the operation of a multi - connection system, characterized in that, the multi - connection system includes a radiation heat exchange module, a fan coil module disposed inside the room, and a first sensor for measuring the internal environment temperature of the room. A second sensor for measuring the air inlet temperature of the fan coil is disposed at the air inlet of the fan coil module. The method includes: obtaining the target temperature of the room, and controlling the radiation heat exchange module according to the internal environment temperature and the target temperature; when the operation duration of the radiation heat exchange module reaches a first preset duration, controlling the fan coil module to operate; obtaining the air inlet temperature of the fan coil, and performing temperature compensation on the internal environment temperature according to the air inlet temperature of the fan coil; controlling the radiation heat exchange module according to the compensated internal environment temperature and the target temperature.

2. The operation control method according to claim 1, characterized in that, the performing temperature compensation on the internal environment temperature according to the air inlet temperature of the fan coil includes: performing temperature compensation on the internal environment temperature according to the difference between the air inlet temperature of the fan coil and the internal environment temperature.

3. The operation control method according to claim 1, characterized in that, the obtaining the air inlet temperature of the fan coil includes: when the operation duration of the fan coil module reaches a second preset duration, obtaining the air inlet temperature of the fan coil.

4. The operation control method according to claim 1, characterized in that, the obtaining the air inlet temperature of the fan coil includes: when the operation duration of the fan coil module reaches a second preset duration, controlling the fan coil module to stop operating, and obtaining the air inlet temperature of the fan coil.

5. The operation control method according to any one of claims 1 to 4, characterized in that, after performing temperature compensation on the internal environment temperature according to the air inlet temperature of the fan coil, the operation control method further includes: every third preset duration, controlling the fan coil module to operate and re - obtaining the air inlet temperature of the fan coil to re - perform temperature compensation on the internal environment temperature.

6. The operation control method according to claim 1, characterized in that, the radiation heat exchange module includes a refrigeration heat exchange coil disposed on the wall or roof of the room. In the case where the room operates in the refrigeration mode, when the internal environment temperature reaches the dew point temperature of the room, controlling the fan coil module to operate in the dehumidification mode.

7. The operation control method according to claim 6, characterized in that, when the internal environment temperature reaches the dew point temperature of the room, reducing the heat exchange power of the refrigeration heat exchange coil.

8. The operation control method according to claim 7, characterized in that, when the internal environment temperature is higher than the dew point temperature, controlling the fan coil module to continue operating for a fourth preset duration and then stop operating, and controlling the heat exchange power of the refrigeration heat exchange coil to recover to the power before the decrease.

9. An operation control device, characterized in that, it includes a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor executes the program to implement the operation control method of the multi - connection system according to any one of claims 1 to 8.

10. A multi - connection system, It is characterized in that it includes a radiation heat exchange module, a fan coil module disposed inside the room, and a first sensor for measuring the internal environment temperature of the room. A second sensor for measuring the fan coil inlet air temperature is disposed at the air inlet of the fan coil module. It further includes an operation control device as described in claim 9.

11. The multi-connected system according to claim 10 It is characterized in that the radiation heat exchange module includes a refrigeration heat exchange coil disposed on the wall or roof of the room and a floor heating heat exchange coil disposed on the floor of the room. The multi-connected system further includes a dew point sensor disposed at the wall or roof corresponding to the refrigeration heat exchange coil.

12. A computer-readable storage medium It is characterized in that the computer-readable storage medium stores computer-executable instructions for causing a computer to execute the operation control method of the multi-connected system as described in any one of claims 1 to 8.

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