Flow adjusting method and temperature adjusting system

Abstract

The invention discloses a flow adjusting method and a temperature adjusting system. The flow adjusting method comprises the steps that the current environment temperature is obtained; according to the comparison result of the current environment temperature and the preset temperature, the operation mode of the temperature adjusting system is determined; after operation is conducted for preset time in the current mode, the liquid inlet temperature and the liquid outlet temperature of the heat exchange medium passing through the heat exchange device are obtained according to a temperature sensor; temperature difference parameters are obtained through the liquid inlet temperature and the liquid outlet temperature, and the flow state of the heat exchange device is determined according to the temperature difference parameters; and the flow of the heat exchange device is adjusted according to the flow state of the heat exchange device. Whether the flow of the heat exchange devices is proper or not is determined according to the flow state, so that the heat exchange devices with improper flow can be adjusted, operation is convenient, the debugging time is shortened, the adjusting accuracy is improved, the flow of the heat exchange devices can reach or approach balance more quickly, and the temperature control effect of the temperature adjusting system is improved.

Description

Technical Field

[0001] The present invention relates to the field of temperature control technology, and in particular to a flow regulation method and a temperature regulation system. Background Art

[0002] In air-conditioning systems, pipes are usually needed to connect various components. Since the different-passage pipe system has the advantages of less pipe consumption and lower construction difficulty compared to the same-passage pipe system, the different-passage pipe system is mostly used in the actual installation process.

[0003] In the process of implementing this application, the inventors found that there are at least the following problems in the prior art:

[0004] However, the different lengths and resistances of the parallel loops in the heterogeneous piping system lead to unbalanced water flow, which in turn leads to poor temperature control. Therefore, the construction and installation personnel need to rely on their experience to adjust the opening of each branch valve to adjust the flow of each branch so that the flow of each branch can reach a balanced or near-balanced effect. However, relying on experience to make adjustments not only takes a long time to debug, but also the accuracy of the adjustment results is not high. Summary of the invention

[0005] In view of this, the present invention provides a flow regulation method and a temperature control system to solve the problem in the prior art that the flow needs to be adjusted based on work experience, resulting in a long debugging time and low accuracy.

[0006] In one aspect, the present application provides a flow regulation method, comprising:

[0007] Get the current ambient temperature;

[0008] Determine the operating mode of the temperature control system according to the comparison result between the current ambient temperature and the preset temperature;

[0009] After running for a preset time in the current mode, the inlet temperature and outlet temperature of the heat exchange medium passing through the heat exchange device are obtained according to the temperature sensor;

[0010] Obtaining a temperature difference parameter through the liquid inlet temperature and the liquid outlet temperature, and determining a flow state of the heat exchange device according to the temperature difference parameter;

[0011] The flow rate of the heat exchange device is adjusted according to the flow rate state of the heat exchange device.

[0012] In some embodiments, determining the flow state of the heat exchange device according to the temperature difference parameter includes:

[0013] The flow state of the heat exchange device is determined according to a comparison result of the temperature difference parameter and preset temperature difference information corresponding to the current mode.

[0014] In some embodiments, determining the flow state of the heat exchange device according to the temperature difference parameter includes:

[0015] The current flow of the heat exchange device is calculated according to the temperature difference parameter, and the flow state of the heat exchange device is determined according to a comparison result between the current flow and preset flow information corresponding to the current mode.

[0016] In some embodiments, the preset temperature difference information is a temperature threshold interval; and determining the flow state of the heat exchange device according to a comparison result between the temperature difference parameter and the preset temperature difference information corresponding to the current mode includes:

[0017] When the temperature difference parameter is within the temperature threshold interval retrieved according to the current mode, confirming that the flow state of the heat exchange device is moderate flow;

[0018] When the temperature difference parameter is less than the minimum value of the temperature threshold interval retrieved according to the current mode, confirming that the flow state of the heat exchange device is too large;

[0019] When the temperature difference parameter is greater than the maximum value of the temperature threshold interval retrieved according to the current mode, it is confirmed that the flow state of the heat exchange device is low flow.

[0020] In some embodiments, after determining the operating mode of the temperature control system, the method further includes:

[0021] Control the cold or hot source to cool or heat according to the current mode, so that the heat exchange medium in the cold or hot source is cooled or heated;

[0022] After the temperature of the heat exchange medium in the cold and heat source reaches a preset target temperature, the heat exchange device is controlled to open so that the heat exchange medium in the cold and heat source flows to the heat exchange device.

[0023] In some embodiments, the temperature control system further includes a display device for displaying the flow state; the controlling the heat exchange device to open so that the heat exchange medium in the cold and heat sources flows to the heat exchange device includes:

[0024] Based on the operation of the heat exchange control interface of the display device, the fan and the solenoid valve of the heat exchange device are controlled to open, so that the heat exchange medium in the cold and hot sources flows to the coil of the heat exchange device.

[0025] In some embodiments, obtaining the inlet temperature and outlet temperature of the heat exchange medium passing through the heat exchange device according to the temperature sensor includes:

[0026] A first temperature sensor located at the inlet of the heat exchange device obtains the inlet liquid temperature;

[0027] A second temperature sensor located at the outlet of the heat exchange device obtains the outlet liquid temperature; and / or,

[0028] Determining the operating mode of the temperature control system according to the comparison result between the current ambient temperature and the preset temperature includes:

[0029] When the current ambient temperature is not lower than the preset temperature, determining that the operating mode of the temperature control system is a cooling mode;

[0030] When the current ambient temperature is lower than the preset temperature, it is determined that the operating mode of the temperature control system is a heating mode.

[0031] In some embodiments, after determining the flow state of the heat exchange device according to the temperature difference parameter, the method further includes:

[0032] The flow status is displayed on a display device.

[0033] On the other hand, the present application provides a temperature control system, including a cold and hot source, a plurality of heat exchange devices, a pipeline assembly and a display device, wherein the pipeline assembly includes a main liquid outlet pipe, a main liquid return pipe and a plurality of branches, the two ends of the plurality of branches are respectively connected to the main liquid outlet pipe and the main liquid return pipe, and the plurality of branches are arranged in parallel, and each branch is provided with a heat exchange device;

[0034] The temperature control system further includes a control module, which is used to execute the flow control method described above, and the display device is communicatively connected to the control module.

[0035] In some embodiments, the heat exchange device includes a coil and a first temperature sensor located at an inlet of the coil and a second temperature sensor located at an outlet thereof, respectively. For each of the coils, the control module is electrically connected to the first temperature sensor and the second temperature sensor, and the control module determines a flow state corresponding to the coil according to a temperature difference detected by the first temperature sensor and the second temperature sensor; and / or,

[0036] The display device is a wire controller, the number of which is the same as the number of the heat exchange devices and they are arranged in one-to-one correspondence. The wire controller is used to display the flow status of the corresponding heat exchange device and to control the start and stop of the corresponding heat exchange device.

[0037] Compared with the prior art, the flow regulation method provided by the present invention has at least the following beneficial effects:

[0038] The present invention obtains the temperature difference parameters by obtaining the inlet temperature and outlet temperature of the heat exchange medium passing through the heat exchange device, and then determines the flow state of the heat exchange device according to the temperature difference parameters, confirms whether the flow of the heat exchange device is appropriate, so as to adjust the heat exchange device with inappropriate flow according to the flow state. The operation is convenient and the debugging time is reduced. At the same time, the accuracy of the adjustment can be improved, so that the flow of multiple heat exchange devices in the temperature control system can reach or approach balance more quickly, thereby improving the temperature control effect of the temperature control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the structure of a temperature control system provided by an embodiment of the present invention;

[0040] Figure 2 A flow chart of a flow regulation method provided by an embodiment of the present invention;

[0041] Figure 3 A flow chart of a flow regulation method provided by another embodiment of the present invention.

[0042] In the figure: 10, temperature control system; 12, cold and hot sources; 14, heat exchange device; 16, pipeline assembly; 18, main liquid outlet pipe; 20, main liquid return pipe; 22, branch; 24, display device. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0044] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, inside, outside, top, bottom...) are only used to explain the relative position relationship between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, the element may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0046] See also Figure 1A temperature control system 10 provided by an embodiment of the present invention includes a cold or heat source 12, a heat exchange device 14 and a pipeline assembly 16. The cold or heat source 12 stores a heat exchange medium such as water and can cool or heat the heat exchange medium. The heat exchange device 14 is connected to the cold or heat source 12 through the pipeline assembly 16, so that the heat exchange medium in the cold or heat source 12 that has been cooled or heated can flow into the heat exchange device 14 through the pipeline assembly 16, and perform heat exchange with the temperature-to-be-controlled area through the heat exchange device 14, so as to reduce or increase the temperature of the temperature-to-be-controlled area.

[0047] The specific application scenario of the temperature control system 10 is not limited. For example, it can be used to adjust the temperature of a car in a subway or other transportation vehicle, or it can be used to adjust the indoor temperature of a building. In this application, the temperature control system 10 is used to adjust the indoor temperature. In this case, the cold and hot source 12 serves as an outdoor unit, and the heat exchange device 14 serves as an indoor unit.

[0048] There are multiple heat exchange devices 14, and the pipeline assembly 16 includes a main liquid outlet pipe 18, a main liquid return pipe 20 and multiple branches 22. The main liquid outlet pipe 18 is connected to the liquid outlet of the cold and hot source 12, and the main liquid return pipe 20 is connected to the liquid return port of the cold and hot source 12. The two ends of the multiple branches 22 are respectively connected to the main liquid outlet pipe 18 and the main liquid return pipe 20, and the multiple branches 22 are arranged in parallel, and each branch 22 is provided with a heat exchange device 14. The heat exchange medium in the cold and heat sources 12 flows into the main liquid outlet pipe 18 through the liquid outlet. When flowing in the main liquid outlet pipe 18, the heat exchange medium will pass through the branch 22 connected to the main liquid outlet pipe 18 in sequence. Each time it passes through a branch 22, part of the heat exchange medium will flow into the corresponding branch 22, flow through the heat exchange device 14 on the branch 22, and then flow back to the main return pipe 20, and finally flow from the main return pipe 20 through the return pipe back to the cold and heat sources 12, so that the heat exchange medium circulates between the cold and heat sources 12 and the heat exchange device 14.

[0049] It is understandable that the multiple heat exchange devices 14 can act on the same space, such as the same room, the same compartment space, etc., to enhance the temperature control effect of the temperature control system 10 on the room, or can act on different spaces, such as different rooms, different compartment spaces, etc., to increase the coverage area of ​​the temperature control system 10.

[0050] The temperature control system 10 also includes a control module and a display device 24 that is communicatively connected to the control module. The control module is used to detect the flow state of the heat exchange device 14, and upload the flow state to the display device 24 for display by the display device 24. The display device 24 is used to display the flow state of the heat exchange device 14, so as to realize the visualization of the flow of the heat exchange device 14. The flow state of the heat exchange device 14 is confirmed to be appropriate according to the flow state displayed on the display device 24, so as to quickly find the heat exchange device 14 with inappropriate flow and adjust it accordingly. Moreover, during or after the adjustment process, it is also possible to judge whether the adjustment is accurate according to the flow state displayed on the display device 24. The operation is convenient, the debugging time is reduced, and the accuracy of the adjustment can be improved at the same time, so that the flow of multiple heat exchange devices 14 of the temperature control system 10 can reach or approach balance more quickly, thereby improving the temperature control effect and comfort of the room by the temperature control system 10.

[0051] The flow status includes three states: moderate flow, small flow, and large flow. When the flow status displayed by the display device 24 is moderate flow, it means that the flow of the heat exchange device 14 does not need to be adjusted. When the flow status of the display device 24 is small flow or large flow, it means that the flow of the heat exchange device 14 needs to be increased or decreased.

[0052] The specific number of the display devices 24 is not limited, for example, there may be one display device 24, which displays the flow status of all heat exchange devices 14, or there may be multiple display devices 24, each display device 24 displays the flow status of a corresponding heat exchange device 14. In this embodiment, the number of display devices 24 is the same as the number of heat exchange devices 14, and multiple display devices 24 correspond to multiple heat exchange devices 14 one by one. Each display device 24 displays the flow status of the corresponding heat exchange device 14, so as to form accurate control of each heat exchange device 14, and it is also more convenient to quickly find the heat exchange device 14 with inappropriate flow.

[0053] In this embodiment, the display device 24 is a wire controller, and the number of wire controllers is the same as the number of heat exchange devices 14 and they are arranged one by one. The cost of the wire controller is relatively low, and the visualization of the flow can be achieved at a lower cost.

[0054] The wire controller is communicatively connected with the heat exchange device 14 so that the wire controller can control the start and stop of the corresponding heat exchange device 14, so that the wire controller can not only display the flow status of the corresponding heat exchange device, but also be used to control the start and stop of the corresponding heat exchange device 14, which is easy to operate.

[0055] Each heat exchange device 14 includes a coil, a fan and a solenoid valve. The coil is connected to the corresponding branch 22 of the pipeline assembly 16. The fan and the coil are arranged relative to each other to increase the flow rate of the airflow so that more airflow passes through the coil per unit time, thereby improving the heat exchange effect. The solenoid valve is arranged on the coil or on the branch 22 connected to the coil. The solenoid valve can adjust the flow of the coil by controlling the opening and closing degree of the valve so that the flow of each coil reaches or is close to a balance. The wire controller can control the start and stop of the fan and the solenoid valve.

[0056] The heat exchange device 14 also includes a temperature sensor, which can obtain the inlet temperature and outlet temperature of the heat exchange medium when passing through the heat exchange device. The inlet temperature refers to the temperature of the heat exchange medium when it enters the heat exchange device, and the outlet temperature refers to the temperature of the heat exchange medium when it is discharged from the heat exchange device. When the heat exchange medium is discharged from the heat exchange device, heat exchange has been carried out, so the inlet temperature and the outlet temperature will be different. The control module calculates the temperature difference before and after the heat exchange of the heat exchange medium based on the inlet temperature and the outlet temperature, and determines the flow state of the heat exchange device based on the temperature difference.

[0057] In an optional example, the temperature sensor includes a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged at the inlet of the coil, and the second temperature sensor is arranged at the outlet of the coil. The first temperature sensor can detect the temperature of the heat exchange medium when it passes through the inlet of the coil, that is, when it enters the coil, and the second temperature sensor can detect the temperature of the heat exchange medium when it passes through the outlet of the coil, that is, when it is discharged from the coil. The control module is connected to the first temperature sensor and the second temperature sensor in communication, and determines the flow state of the corresponding coil according to the difference between the temperatures detected by the first temperature sensor and the second temperature sensor.

[0058] Under the premise that the heat of the external heat source is the same, when the flow rate of the coil is small, that is, the heat exchange medium passing through the coil is small, after the heat exchange medium exchanges heat with the heat source at the coil, the temperature rise or drop of the heat exchange medium is relatively large, and the temperature of the heat exchange medium when entering the coil is different from the temperature when it is discharged from the coil; on the contrary, when the flow rate of the coil is large, that is, the heat exchange medium passing through the coil is large, after the heat exchange medium exchanges heat with the heat source at the coil, the temperature rise or drop of the heat exchange medium is relatively small, and the temperature of the heat exchange medium when entering the coil is different from the temperature when it is discharged from the coil. Specifically, the cooling capacity = flow rate × temperature difference × coefficient, the flow rate of the coil is inversely proportional to the temperature difference when the heat exchange medium enters the coil and is discharged from the coil. A large temperature difference means a small flow rate, and a small temperature difference means a large flow rate, so that the control module can judge the flow state by the size of the temperature difference.

[0059] Optionally, the control module includes a controller located in the heat exchange device 14, the controller is connected to the first temperature sensor, the second temperature sensor and the display device 24 in communication, the first temperature sensor and the second temperature sensor upload the detected temperature to the controller, the controller calculates the temperature difference when the heat exchange medium enters the coil and is discharged from the coil according to the temperature uploaded by the first temperature sensor and the second temperature sensor, and determines the flow state of the heat exchange device 14 according to the temperature difference, and then uploads the obtained flow state to the display device 24, which is displayed by the display device 24. Specifically, the display device 24 is connected to the controller in communication through a communication line.

[0060] In an optional example, the controller is electrically connected to the solenoid valve of the heat exchange device 14. The controller determines the flow state of the heat exchange device 14 based on the temperature difference. When the flow state is too large or too small, the controller controls the opening of the solenoid valve according to the flow state, and adjusts the flow of the heat exchange device to meet the temperature control requirements, thereby achieving the effect of the temperature control system automatically adjusting the flow without manual adjustment.

[0061] See also Figure 2 The present invention further provides a flow rate regulating method, which is used in the temperature regulating system in the above embodiment. The flow rate regulating method comprises:

[0062] Step 101: Get the current ambient temperature.

[0063] In this application, the temperature control system is used in a building to adjust the temperature in a room. For example, the current ambient temperature refers to the temperature in the room. The specific method of obtaining the temperature is not limited. For example, the current ambient temperature is collected in real time by a temperature sensor and sent to the control module of the temperature control system. Step 102: Determine the operating mode of the temperature control system according to the comparison result between the current ambient temperature and the preset temperature.

[0064] Usually, the temperature control system has multiple operating modes to meet the temperature control needs in different application scenarios. In an optional example, if the current ambient temperature is high, it means that the temperature control system needs to cool down the room, and if the current ambient temperature is low, it means that the temperature control system needs to heat up the room. The operating mode of the temperature control system is determined according to the current ambient temperature. The operating mode of the temperature control system is first determined, and the working characteristics under the corresponding operating mode are used to more accurately analyze and determine the flow state of the heat exchange device. Compared with controlling the operating mode of the temperature control system by feeling, it effectively avoids human errors, ensures the comfort of the room, and facilitates more accurate determination of the flow state of the heat exchange device in the future.

[0065] Step 103: After running for a preset time in the current mode, the inlet temperature and outlet temperature of the heat exchange medium passing through the heat exchange device are obtained according to the temperature sensor.

[0066] Inlet temperature, T 进液 It refers to the temperature of the heat exchange medium when it enters the heat exchange device. At this time, the heat exchange medium does not undergo heat exchange. The outlet temperature is expressed as T 出液 It refers to the temperature of the heat exchange medium when it is discharged from the heat exchange device. At this time, the heat exchange medium has completed the heat exchange. After running for a preset time, it is ensured that each heat exchange device has heat exchange medium passing through, so as to obtain the inlet temperature and outlet temperature of the heat exchange medium when passing through each heat exchange device.

[0067] Step 104: Obtain a temperature difference parameter through the inlet liquid temperature and the outlet liquid temperature, and determine the flow state of the heat exchange device according to the temperature difference parameter.

[0068] The inlet temperature T 进液 and outlet temperature T 出液 The temperature difference parameter can be obtained by subtracting the smaller value from the larger value. 出液 -T 进液 | indicates that the temperature difference between the heat exchange medium before and after heat exchange is inversely proportional to the flow rate, so the temperature difference parameter |T 出液 -T 进液 |The size of | determines the flow state of the heat exchange device.

[0069] Step 105: Adjust the flow rate of the heat exchange device according to the flow rate state of the heat exchange device.

[0070] The flow rate is adjusted according to the flow status, which can be automatically adjusted through a control module or manually adjusted.

[0071] By obtaining the inlet temperature and outlet temperature of the heat exchange medium passing through the heat exchange device, the temperature difference parameter is obtained, and then the flow state of the heat exchange device is determined according to the temperature difference parameter to determine whether the flow of the heat exchange device is appropriate, so as to adjust the heat exchange device with inappropriate flow according to the flow state. The operation is convenient and the debugging time is reduced. At the same time, the accuracy of the adjustment can be improved, so that the flow of multiple heat exchange devices in the temperature control system can reach or approach balance more quickly, thereby improving the temperature control effect and comfort of the temperature control system on the room.

[0072] In one embodiment, a control module of a temperature control system is used to execute the above-mentioned flow regulation method. The control module may include one or more controllers. When the control module includes multiple controllers, the multiple controllers may also be located in different devices of the temperature control system. The steps of the flow regulation method provided in the embodiment of the present application are jointly executed by cooperating with multiple controllers.

[0073] In an optional example, the control module includes a controller located in the heat exchange device, which is used to control the detection of the inlet liquid temperature and the outlet liquid temperature, obtain temperature difference information through the inlet liquid temperature and the outlet liquid temperature to determine the flow state, and upload the flow state to the display device for display.

[0074] In one embodiment, after determining the flow state of the heat exchange device according to the temperature difference parameter, the method further includes:

[0075] The flow status is displayed on the display device.

[0076] The flow status is displayed on a display device to realize flow visualization, so as to quickly find the heat exchange device with inappropriate flow and manually adjust the flow of the heat exchange device. Moreover, during or after the adjustment, it is also possible to judge whether the current adjustment is effective based on the flow status displayed in real time on the display device.

[0077] In one embodiment, determining the operating mode of the temperature control system according to the comparison result between the current ambient temperature and the preset temperature includes:

[0078] When the current ambient temperature is not lower than the preset temperature, the operating mode of the temperature control system is determined to be the cooling mode.

[0079] When the current ambient temperature is lower than the preset temperature, the operating mode of the temperature control system is determined to be the heating mode.

[0080] The preset temperature is represented by T1. When the current ambient temperature is ≥ the preset temperature T1, it means that the temperature in the room is relatively high at this time, and the temperature needs to be lowered to improve the comfort level of the room. Therefore, it is determined that the temperature control system needs to operate in cooling mode. When the current ambient temperature is < the preset temperature T1, it means that the temperature in the room is relatively low at this time, and the temperature needs to be raised to improve the comfort level of the room. Therefore, it is determined that the temperature control system needs to operate in heating mode.

[0081] In one embodiment, after determining the operating mode of the temperature control system, the method further includes:

[0082] According to the current mode, the cold and hot sources are controlled to cool or heat, so that the heat exchange medium in the cold and hot sources is cooled or heated.

[0083] When the operating mode of the temperature control system is the cooling mode, the cold and hot sources are controlled to cool so that the temperature of the heat exchange medium in the cold and hot sources is reduced; when the operating mode of the temperature control system is the heating mode, the cold and hot sources are controlled to heat so that the temperature of the heat exchange medium in the cold and hot sources is increased.

[0084] After the temperature of the heat exchange medium in the cold and heat sources reaches a preset target temperature, the heat exchange device is controlled to open so that the heat exchange medium in the cold and heat sources flows to the heat exchange device.

[0085] When the heat exchange device is not turned on, the heat exchange medium in the cold and heat sources cannot flow into the heat exchange device. The heat exchange medium can only flow into the heat exchange device when it is turned on, preventing the heat exchange medium in the cold and heat sources from flowing into the heat exchange device before the temperature reaches the preset target temperature.

[0086] When the operation mode is determined to be cooling mode, the cold and hot sources are controlled to cool, and the temperature of the heat exchange medium in the cold and hot sources is waited to reach the preset target temperature, which is represented by T2, and then the heat exchange device is turned on; when the operation mode is determined to be heating mode, the cold and hot sources are controlled to heat, and the temperature of the heat exchange medium in the cold and hot sources is waited to reach the preset target temperature, which is represented by T3, and then the heat exchange device is turned on, where T2<T1<T3. After the temperature of the heat exchange medium reaches the preset target temperature, it flows to each heat exchange device to ensure that the inlet temperature T 进液 , liquid outlet temperature T 出液 And the temperature difference parameter |T 出液 -T 进液 |Accuracy of test results.

[0087] In one embodiment, the control of opening the heat exchange device so that the heat exchange medium in the cold and hot sources flows to the heat exchange device includes:

[0088] Based on the operation of the heat exchange control interface of the display device, the fan and the solenoid valve of the heat exchange device are controlled to open, so that the heat exchange medium in the cold and hot sources flows to the coil of the heat exchange device.

[0089] The heat exchange device includes a coil, a fan and a solenoid valve. The coil is used to allow the heat exchange medium to pass through for heat exchange, the fan is used to accelerate the flow rate of the airflow on the surface of the coil to enhance the heat exchange effect, and the solenoid valve can control the on and off and flow of the coil by opening and closing. When the solenoid valve is closed, the heat exchange medium in the cold and hot sources cannot enter the coil. Only after the solenoid valve is opened can the heat exchange medium enter the coil and perform heat exchange to adjust the temperature in the room. The display device not only has the function of displaying the flow status, but also can control the opening of the fan and the solenoid valve for easy operation.

[0090] It can be understood that the operation on the heat exchange control interface of the display device may be a button pressing operation, a touch screen operation, a voice operation, or the like.

[0091] In one embodiment, obtaining the inlet temperature and outlet temperature of the heat exchange medium passing through the heat exchange device includes:

[0092] The first temperature sensor located at the inlet of the heat exchange device obtains the inlet liquid temperature.

[0093] The second temperature sensor located at the outlet of the heat exchange device obtains the outlet liquid temperature.

[0094] When the heat exchange medium enters the heat exchange device through the inlet of the heat exchange device, the heat exchange medium will contact the first temperature sensor, and the first temperature sensor can obtain the temperature of the heat exchange medium before heat exchange, that is, the inlet temperature T 进液When the heat exchange medium is discharged from the heat exchange device through the outlet of the heat exchange device, the heat exchange medium will contact the second temperature sensor, and the second temperature sensor can obtain the temperature of the heat exchange medium after heat exchange, that is, the outlet temperature T 出液 , and then respectively obtain the inlet temperature T 进液 and outlet temperature T 出液 Upload to the control module to obtain the temperature difference parameters.

[0095] Specifically, the first temperature sensor is arranged at the inlet of the coil, and the second temperature sensor is arranged at the outlet of the coil.

[0096] In one embodiment, determining the flow state of the heat exchange device according to the temperature difference parameter includes:

[0097] The flow state of the heat exchange device is determined based on the comparison result of the temperature difference parameter and the preset temperature difference information corresponding to the current mode.

[0098] The preset temperature difference information is the difference between the inlet temperature and the storage temperature when the temperature control system is in a balanced or near-equilibrium state. The obtained temperature difference parameter is compared with the preset temperature difference information, and the flow state of the heat exchange device is judged based on the relative size relationship between the two.

[0099] In one embodiment, after determining the operating mode of the temperature control system, the method further includes:

[0100] Retrieve the corresponding preset temperature difference information according to the current mode.

[0101] The temperature control system has a variety of different preset temperature difference information, each of which corresponds to an operating mode. After the operating mode is determined, the preset temperature difference information corresponding to the operating mode is immediately retrieved for comparison with the temperature difference parameters to ensure the accuracy of the comparison result.

[0102] It can be understood that information such as the preset temperature difference information, the preset temperature and the preset target temperature can be directly stored in the control module, or stored in a memory that is communicatively connected to the control module.

[0103] In one embodiment, the preset temperature difference information is a temperature threshold interval; the flow state of the heat exchange device is determined according to the comparison result of the temperature difference parameter and the temperature difference information corresponding to the current mode, including:

[0104] When the temperature difference parameter is within the temperature threshold interval called according to the current mode, it is determined that the flow state of the heat exchange device is moderate flow.

[0105] When the temperature difference parameter is less than the minimum value of the temperature threshold interval called according to the current mode, it is determined that the flow state of the heat exchange device is too large.

[0106] When the temperature difference parameter is greater than the maximum value of the temperature threshold interval called according to the current mode, it is determined that the flow state of the heat exchange device is low flow.

[0107] Temperature threshold interval (△T 下 , △T 上 ) represents, where △T 下 <△T 上 Since the flow rate is inversely proportional to the temperature difference, when △T 下 ≤|T 出液 -T 进液 |≤△T 上 When |T , it means that the temperature change of the heat exchange medium before and after heat exchange is moderate, the flow state of the heat exchange device is moderate flow, and the display device shows moderate flow. At this time, there is no need to adjust the flow of the heat exchange device; when |T 出液 -T 进液 |<△T 下 When |T , it means that the temperature change of the heat exchange medium before and after heat exchange is small, the flow state of the heat exchange device is too large, and the display device shows that the flow is too large. The flow of the heat exchange device is reduced through the solenoid valve; when |T 出液 -T 进液 |>△T 上 When , it means that the temperature change of the heat exchange medium before and after heat exchange is large, the flow state of the heat exchange device is small flow, and the display device shows that the flow is small. The flow of the heat exchange device is increased through the solenoid valve, and finally the flow of multiple heat exchange devices in the temperature control system reaches or is close to balance.

[0108] In another embodiment, determining the flow state of the heat exchange device according to the temperature difference parameter includes:

[0109] The current flow rate of the heat exchange device is calculated according to the temperature difference parameter, and the flow state of the heat exchange device is determined according to the comparison result of the current flow rate and the preset flow rate information corresponding to the current mode.

[0110] The preset flow information is the flow value when the temperature control system is in equilibrium or close to equilibrium. After the control module obtains the temperature difference parameter, it can calculate the current flow based on the temperature difference parameter, and then compare the current flow with the preset flow information. According to the relative size relationship between the two, the flow state of the heat exchange device is determined.

[0111] See also Figure 3 In order to have a more holistic understanding of the flow rate regulation method provided in the embodiment of the present application, the flow rate regulation method is described by taking the temperature control system as an air conditioning system as an example. The flow rate regulation method includes:

[0112] Step 11: Start the temperature control system flow detection.

[0113] Step 13: Get the current ambient temperature.

[0114] Step 15: Determine whether the current ambient temperature ≥ T1. If so, execute step 171; if not, execute step 172.

[0115] Step 171: Run the cooling mode.

[0116] Step 191: Wait for the temperature of the heat exchange medium in the cold and hot sources to reach a preset target temperature T2.

[0117] Step 172: Run the heating mode.

[0118] Step 192: Wait for the temperature of the heat exchange medium in the cold and hot sources to reach a preset target temperature T3.

[0119] Step 21: Start the heat exchange device and obtain the inlet temperature T after running for a preset time. 进液 and outlet temperature T 出 liquid.

[0120] Step 23: According to T 进液 and T 出液 Get the temperature difference parameter |T 出液 -T 进液 |.

[0121] Step 25: Determine △T 下 ≤|T 出液 -T 进液 |≤△T 上 Is it true? If so, execute step 271; if not, execute step 272.

[0122] Step 271: The display device shows that the flow rate is moderate.

[0123] Step 272: Determine |T 出液 -T 进液 |>△T 上 Is it true? If so, execute step 291; if not, execute step 292.

[0124] Step 291: The display device shows that the flow rate is too small.

[0125] Step 292: The display device shows that the flow rate is too large.

[0126] Step 31: End.

[0127] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A flow regulation method, characterized in that: include: Get the current ambient temperature; Determine the operating mode of the temperature control system according to the comparison result between the current ambient temperature and the preset temperature; After running for a preset time in the current mode, the inlet temperature and outlet temperature of the heat exchange medium passing through the heat exchange device are obtained according to the temperature sensor; Obtaining a temperature difference parameter through the liquid inlet temperature and the liquid outlet temperature, and determining a flow state of the heat exchange device according to the temperature difference parameter; The flow rate of the heat exchange device is adjusted according to the flow rate state of the heat exchange device.

2. The flow rate regulation method according to claim 1, characterized in that: Determining the flow state of the heat exchange device according to the temperature difference parameter includes: The flow state of the heat exchange device is determined according to a comparison result of the temperature difference parameter and preset temperature difference information corresponding to the current mode.

3. The flow rate regulation method according to claim 1, characterized in that: Determining the flow state of the heat exchange device according to the temperature difference parameter includes: The current flow of the heat exchange device is calculated according to the temperature difference parameter, and the flow state of the heat exchange device is determined according to a comparison result between the current flow and preset flow information corresponding to the current mode.

4. The flow rate regulation method according to claim 2, characterized in that: The preset temperature difference information is a temperature threshold interval; The determining the flow state of the heat exchange device according to the comparison result of the temperature difference parameter and the preset temperature difference information corresponding to the current mode includes: When the temperature difference parameter is within the temperature threshold interval retrieved according to the current mode, confirming that the flow state of the heat exchange device is moderate flow; When the temperature difference parameter is less than the minimum value of the temperature threshold interval retrieved according to the current mode, confirming that the flow state of the heat exchange device is too large; When the temperature difference parameter is greater than the maximum value of the temperature threshold interval retrieved according to the current mode, it is confirmed that the flow state of the heat exchange device is low flow.

5. The flow rate regulation method according to claim 1, characterized in that: After determining the operating mode of the temperature control system, the method further includes: Control the cold or hot source to cool or heat according to the current mode, so that the heat exchange medium in the cold or hot source is cooled or heated; After the temperature of the heat exchange medium in the cold and heat source reaches a preset target temperature, the heat exchange device is controlled to open so that the heat exchange medium in the cold and heat source flows to the heat exchange device.

6. The flow rate regulation method according to claim 5, characterized in that: The temperature control system further includes a display device for displaying the flow state; the control of opening the heat exchange device so that the heat exchange medium in the cold and heat sources flows to the heat exchange device includes: Based on the operation of the heat exchange control interface of the display device, the fan and the solenoid valve of the heat exchange device are controlled to open, so that the heat exchange medium in the cold and hot sources flows to the coil of the heat exchange device.

7. The flow rate regulation method according to claim 1, characterized in that: The method of obtaining the inlet temperature and outlet temperature of the heat exchange medium passing through the heat exchange device according to the temperature sensor includes: A first temperature sensor located at the inlet of the heat exchange device obtains the inlet liquid temperature; A second temperature sensor located at the outlet of the heat exchange device obtains the outlet liquid temperature; and / or, Determining the operating mode of the temperature control system according to the comparison result between the current ambient temperature and the preset temperature includes: When the current ambient temperature is not lower than the preset temperature, determining that the operating mode of the temperature control system is a cooling mode; When the current ambient temperature is lower than the preset temperature, it is determined that the operating mode of the temperature control system is a heating mode.

8. The flow rate regulation method according to claim 1, characterized in that: After determining the flow state of the heat exchange device according to the temperature difference parameter, the method further includes: The flow status is displayed on a display device.

9. A temperature control system, characterized in that: It includes a cold and hot source, a plurality of heat exchange devices, a pipeline assembly and a display device, wherein the pipeline assembly includes a main liquid outlet pipe, a main liquid return pipe and a plurality of branches, the two ends of the plurality of branches are respectively connected with the main liquid outlet pipe and the main liquid return pipe, and the plurality of branches are arranged in parallel, and each branch is respectively provided with a heat exchange device; The temperature control system further includes a control module, which is used to execute the flow control method according to any one of claims 1 to 8, and the display device is communicatively connected to the control module.

10. The temperature control system according to claim 9, characterized in that: The heat exchange device includes a coil and a first temperature sensor located at an inlet of the coil and a second temperature sensor located at an outlet thereof, respectively. For each of the coils, the control module is electrically connected to the first temperature sensor and the second temperature sensor, and the control module determines a flow state corresponding to the coil according to a temperature difference detected by the first temperature sensor and the second temperature sensor; and / or, The display device is a wire controller, the number of which is the same as the number of the heat exchange devices and they are arranged in one-to-one correspondence. The wire controller is used to display the flow status of the corresponding heat exchange device and to control the start and stop of the corresponding heat exchange device.

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