Control method and control device of central purification system, central purification system, and non-transitory computer-readable storage medium

Abstract

The application discloses a control method, a control device, a central purification system and a computer storage medium, and relates to the technical field of central purification systems. The control method comprises the following steps: establishing a wind volume demand database of each layer user of the central purification system, wherein the wind volume demand database at least has a demand wind volume Qcn of an arbitrary floor, a maximum wind volume Qsn, and Qsn=Qbn+Qa, and Qsn>Qcn is always established; adjusting the rotating speed of the central fan and the opening degree of the distribution valve, so that the current wind volume is Qbn, the wind volume of Qb1-Qbn is the same, and the wind volume of Qc1-Qcn is the same; and if Qbn>=Qcn, the current working state is maintained to keep the wind volume stable, wherein n is a positive integer and represents a corresponding floor. Therefore, the energy efficiency of the central purification system can be improved, the energy consumption can be reduced, and fewer users need to start the sub-fan. In addition, the kitchen noise can be improved, the use experience can be improved, and the energy consumption can be further reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen equipment, in particular to a control method and control device of a central purification system, the central purification system, and a non-transitory computer readable storage medium. BACKGROUND

[0002] In the related art, in order to solve the problem of unsmooth extraction of cooking fume in residential buildings, the central purification system is gradually promoted.

[0003] The existing working mode is that the in-house range hood of each floor and the central fan located at the top of the building act together to increase the smoke exhaust volume, but the uniformity of the air volume distribution between different floors is poor, the smoke exhaust air volume of the middle and high floor users exceeds the required air volume, and there is resource waste, and the in-house range hood of the bottom user needs to be turned on to increase the air volume, which will also increase the kitchen noise and affect the use experience. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the prior art. To this end, one object of the present application is to provide a control method of a central purification system, which can improve the energy efficiency of the central purification system and improve the use experience.

[0005] The present application further provides a control device using the above control method.

[0006] The present application further provides a central purification system controlled based on the above control method.

[0007] The present application further provides a non-transitory computer readable storage medium having the above control method recorded thereon.

[0008] According to the control method of the central purification system of the first aspect of the present application, the central purification system comprises: a central fan provided in a central air duct, a sub-air duct communicating the central air duct with the indoor of each floor user, a sub-fan provided in the indoor of each floor user, and a distribution valve controlling the flow area between the central air duct and the sub-air duct, the central fan provides a central air volume Qbn to any floor, and the sub-fan provides an additional air volume Qa;

[0009] A wind volume demand database of each floor user of the central purification system is established, the wind volume demand database at least has a demand air volume Qcn of any floor, a maximum air volume Qsn, and Qsn=Qbn+Qa, Qsn>Qcn is always true, the speed of the central fan and the opening degree of the distribution valve are adjusted so that the current air volume is Qbn, the air volume of Qb1~Qbn is the same, and the air volume of Qc1~Qcn is the same;

[0010] If Qbn≥Qcn, the current working state is maintained to keep the air volume stable, wherein n is a positive integer, representing the corresponding floor.

[0011] According to the control method of the central purification system, by adjusting the distribution valve to make the suction air flow provided by the central fan consistent for multiple floors, the air volume uniformity can be improved, the air volume redundancy of local floors and the air volume deficiency of other floors can be avoided, the energy efficiency of the central purification system can be improved, the energy consumption can be reduced, and fewer users need to start the sub-fan, which further reduces the energy consumption, improves the kitchen noise, and improves the user experience.

[0012] According to some embodiments of the present application, the control method further comprises: if QbnQcn, the sub-fan is started, and the current air volume is increased to the maximum air volume Qsn.

[0013] According to some embodiments of the present application, the control method further comprises:

[0014] The difference Qm between the maximum air volume Qsn and the required air volume Qcn is calculated.

[0015] If Qm≤the first air volume threshold, the current working state is maintained.

[0016] Further, the control method further comprises: if Qm>the first air volume threshold, the current air volume is reduced to Qs’n, Qs’nQsn.

[0017] Further, the current air volume is reduced to Qs’n, Qs’nQsn, specifically: the rotation speed of the central fan is controlled to be reduced; and / or the rotation speed of the sub-fan is controlled to be reduced; and / or the opening degree of the distribution valve is controlled to be reduced.

[0018] According to some embodiments of the present application, the establishing of the air volume requirement database of each floor user of the central purification system is specifically:

[0019] Obtain the number of floors of the building where the central purification system is located, the start-up floor data, the start-up rate data, and the required air volume of each floor;

[0020] Based on the above data, a corresponding relationship between the power distribution valve opening degree and the main machine running frequency is established.

[0021] According to the control device of the second aspect of the embodiment of the present application, the control device comprises an acquisition module and a control module, the acquisition module is used to acquire the current air volume, and the control module is used to start the sub-fan if QbnQcn.

[0022] Further, the control module is further configured to: if Qm> the first air volume threshold, decrease the rotation speed of the central air blower; and / or decrease the rotation speed of the sub air blower; and / or decrease the opening degree of the distribution valve.

[0023] The central purification system according to the third aspect of the present application comprises: a processor and a memory, the memory is configured to store the executable instructions of the processor; wherein the processor is configured to execute the control method described in the above embodiments.

[0024] The non-transitory computer readable storage medium according to the fourth aspect of the present application, when the instructions in the storage medium are executed by the processor of the terminal device, enables the central purification system to execute the control method described in the above embodiments.

[0025] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0027] Figure 1 is a schematic diagram of a central purification system according to an embodiment of the present application;

[0028] Figure 2 is a schematic diagram of a control device according to an embodiment of the present application;

[0029] Figure 3 is a flow chart of a control method according to an embodiment of the present application.

[0030] REFERENCE NUMERALS:

[0031] The central purification system 100,

[0032] The central air duct 10, the central air blower 20, the sub air duct 30, the sub air blower 40, the distribution valve 50,

[0033] The control device 200,

[0034] The acquisition module 210, the control module 220. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0036] The control method, the control device 200 and the central purification system 100, and the computer storage medium according to the embodiments of the present application are described below. Figures 1-3 The control method, the control device 200 and the central purification system 100, and the computer storage medium according to the embodiments of the present application are described below.

[0037] As shown in the figure, the central purification system 100 comprises: a central fan 20 arranged at the top end, the bottom end or the middle region of the central air duct 10, a sub-air duct 30 connecting the central air duct 10 and each floor user room, a sub-fan 40 arranged in each floor user room, and a distribution valve 50 controlling the flow area between the central air duct 10 and the sub-air duct 30. Figure 1

[0038] The central fan 20 is arranged at the top end, the bottom end or the middle region of the central air duct 10 and is used to generate a suction air flow, and the suction negative pressure generated by the suction air flow can be distributed to each floor user through the sub-air duct 30 to suck the oil fume in the indoor space to the central air duct 10 based on the negative pressure generated by the air flow of the central fan 20, and then discharged to the outdoor space after being processed, and each floor user room is provided with a sub-fan 40, and the suction force can be increased through the sub-fan 40 to improve the oil fume suction effect.

[0039] It can be understood that the central air volume provided by the central fan 20 to any floor is Qbn, and the additional air volume of the sub-fan 40 is Qa.

[0040] However, it should be pointed out that the pressure distribution uniformity of the suction negative pressure distributed by the central fan 20 to the multiple floor users is poor, the suction air flow distribution uniformity between the multiple floor users is poor, the suction air flow distributed to the floor adjacent to the central fan 20 is more, the suction force is redundant, the exhaust air volume exceeds the required air volume, resulting in resource waste and low energy efficiency, and the exhaust air volume of the floor far away from the central fan 20 cannot meet the required air volume, and the suction force and the suction air flow need to be supplemented by the sub-fan 40 to make the exhaust air volume meet the required air volume, which will also intensify the kitchen noise and affect the user's experience.

[0041] Based on this, the present application provides a control method of a central purification system 100, which can improve the distribution uniformity of the suction air flow, improve the energy efficiency of the central purification system 100, reduce the kitchen noise, and improve the user experience.

[0042] As shown in the figure, the control method of the central purification system 100 according to the embodiments of the present application comprises: Figure 3

[0043] ​​A wind demand database of each floor user of the central purification system 100 is established, and the wind demand database at least has the demand wind volume Qcn of any floor, the maximum wind volume Qsn, and Qsn=Qbn+Qa, Qsn>Qcn is always true, the rotation speed of the central fan 20 and the opening degree of the distribution valve 50 are adjusted, so that the current wind volume is Qbn, and the wind volumes of Qb1~Qbn are the same, and the wind volumes of Qc1~Qcn are the same;

[0044] If Qbn≥Qcn, the current working state is maintained to keep the wind volume stable, where n is a positive integer representing the corresponding floor.

[0045] Specifically, the wind demand database can be a database established by a deep learning model based on an LSTM model, which can learn and predict long time sequence data, so that when each floor user has the demand of sucking indoor oil fume, the current wind volume of the corresponding floor user can reach Qbn based on the wind demand database, and the current wind volume and the demand wind volume are further compared. When the current wind volume can meet the demand wind volume (i.e. Qbn≥Qcn), the suction demand can be met without increasing the wind volume, and when the current wind volume cannot meet the demand wind volume (Qbn<Qcn), the suction air flow can be supplemented by the sub-fan 40, so that the adjusted current wind volume can meet the demand wind volume, ensuring that the indoor oil fume can be completely sucked clean, and ensuring the working stability and reliability of the central purification system 100.

[0046] It should be pointed out that by controlling the distribution valve 50, the wind volumes of multiple floors are the same, the wind volume uniformity of the central fan 20 distributed to each floor is improved, local wind volume redundancy is avoided, the energy efficiency is improved, and when the suction air flow generated by the central fan 20 can meet the demand wind volume, the sub-fan 40 is not started, which can reduce the energy consumption, more users do not need to start the sub-fan 40, the kitchen noise can be improved, and the use experience can be improved.

[0047] According to the control method of the central purification system 100, by adjusting the distribution valve 50 to make the suction air flow of multiple floors provided by the central fan 20 consistent, the wind volume uniformity can be improved, local floor wind volume redundancy and other floor wind volume deficiency can be avoided, the energy efficiency of the central purification system 100 can be improved, the energy consumption can be reduced, and fewer users need to start the sub-fan, which can further reduce the energy consumption, improve the kitchen noise, and improve the use experience.

[0048] Further, the control method further comprises: if Qbn<Qcn, the sub-fan 40 is started to increase the current wind volume to the maximum wind volume Qsn.

[0049] In other words, the sub-fan 40 is only turned on to supplement the airflow when the required air volume cannot be met. The timing of turning on the sub-fan 40 is more reasonable and can ensure the stability and reliability of the fume extraction.

[0050] For example, let C1 be a first-floor resident and Cn be a top-floor resident; by default, the air volume that can meet the oil fume extraction needs of each floor resident is Qc; while the air volume of the xth floor, after being allocated by the central fan 20, is set to Qbx (that is, the air volume allocated to C1 is Qb1, the air volume allocated to C2 is Qb2, and so on); the air volume that can be increased by the indoor range hood fan (i.e., the sub-fan 40) after it is running is Qa; and the air volume of the xth floor is Qsx (that is, the air volume of C1 is Qs1, the air volume of C2 is Qs2, and so on); therefore, Qsx = Qbx + P * Qa (P is the operating state of the indoor range hood fan, which is 1 when it is working and 0 when it is off).

[0051] When a resident on the xth floor is cooking and needs fume extraction, they can activate the fume extraction mode for that floor with a single button press. At this time, the central fan 20 turns on, acquiring the airflow demand database, along with parameters such as the current floor number, the floor where the fan is running, the operating rate, and the required airflow for each floor. This information is used to determine the initial opening angle of the power distribution valve 50 for that floor and the operating frequency of the central fan 20. By default, for any floor, Qbx + Qa > Qc always holds true. However, the indoor sub-fan 40 for that floor is not running at this time, and the indoor airflow for that floor is Qbn.

[0052] Therefore, if Qbn ≥ Qcn, the central purification system 100 will continue to operate in its current state;

[0053] If Qbn < Qcn, it means that the central fan 20 alone cannot meet the smoke exhaust needs of the residents; then a command is sent to turn on the sub-fan 40 of the indoor range hood. At this time, the adjusted air volume Qsn = Qbn + Qa, and Qsn will definitely be > Qcn.

[0054] like Figure 3 As shown, according to some embodiments of the present invention, the control method further includes:

[0055] Calculate the difference Qm between the maximum air volume Qsn and the required air volume Qcn;

[0056] If Qm ≤ the first air volume threshold, then maintain the current working state;

[0057] If Qm > the first airflow threshold, then reduce the current airflow to Qs'n, where Qs'n < Qsn.

[0058] In other words, after the adjusted current air volume meets the required air volume, the difference between the maximum air volume and the required air volume is further obtained. Based on the size of the difference, it is determined whether the current air volume is too large. If the air volume is too large and exceeds the first air volume threshold, the air volume is adjusted to reduce the air volume. If it does not exceed the first air volume threshold, the air volume difference is reasonable and no adjustment is made, so that Qs'n and Qcn are as close as possible, further reducing energy consumption.

[0059] Understandably, further reducing the current air volume to Qs'n, where Qs'n < Qsn, specifically involves controlling the reduction of the central fan 20's speed; and / or controlling the reduction of the sub-fan 40's speed; and / or controlling the reduction of the opening of the distribution valve 50.

[0060] In other words, the current air volume can be reduced by adjusting the speed of the central fan 20, the speed of the sub-fan 40, or the opening of the distribution valve 50. The appropriate method can be selected according to the needs, and this invention does not impose any specific limitations.

[0061] According to some embodiments of the present invention, establishing a database of air volume requirements for users on each floor of the central purification system 100 specifically involves:

[0062] Obtain data on the number of floors, the number of floors where the central air purification system is located, the number of floors where the system is in operation, the operating rate, and the required air volume for each floor.

[0063] Based on the above data, a correspondence is established between the power distribution valve opening degree of 50° and the operating frequency of the main unit.

[0064] For example, when user A turns on the machine, response parameters such as the number of floors, the floors where the machine is turned on, the operating rate, and the required air volume for each floor are obtained in real time. Adjustment values ​​are generated to match the current user A, so as to control the suction air volume generated by the central fan 20 on that floor to reach Qcn.

[0065] like Figure 2 As shown, the control device 200 according to a second aspect embodiment of the present invention includes: an acquisition module 210 and a control module 220, wherein the acquisition module 210 is used to acquire the current air volume; and the control module 220 is used to turn on the sub-fan 40 if Qbn < Qcn.

[0066] According to the control device 200 of the present invention, there may be multiple acquisition modules 210, and control modules 220 are configured one-to-one with sub-ducts 30 and are used to acquire the current air volume of each floor. Control modules 220 can be used at least to turn on sub-fans 40 when additional exhaust air volume is needed, so as to improve the oil fume removal effect of the central purification system 100 and make the air volume uniformity of each floor higher, thereby improving the energy consumption and energy efficiency of the central purification system 100.

[0067] Combination Figure 2and Figure 3 The control module 220 is further configured to: if Qm > the first air volume threshold, reduce the rotating speed of the central air fan 20; and / or reduce the rotating speed of the sub air fan 40; and / or reduce the opening degree of the distribution valve 50.

[0068] The central purification system 100 according to the third aspect of the present application comprises: a processor and a memory, the memory being configured to store the executable instructions of the processor; wherein the processor is configured to execute the control method in the above-mentioned embodiments.

[0069] The central purification system 100 according to the embodiments of the present application has higher energy efficiency and better user experience.

[0070] The non-transitory computer readable storage medium according to the fourth aspect of the present application, for example, the memory comprising instructions, the above-mentioned instructions being executable by the processor of the control device 200 to complete the above-mentioned method. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc. When the instructions in the storage medium are executed by the processor of the terminal device, the central purification system 100 can execute the control method in the above-mentioned embodiments.

[0071] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0072] In the description of the present application, "first feature" and "second feature" can include one or more of the features.

[0073] In the description of the present application, "a plurality of" means two or more.

[0074] In the description of the present application, "above" or "below" the first feature in the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0075] In the description of the present application, above, over and on with respect to a first feature and a second feature include the first feature directly on and obliquely on the second feature, or simply mean that the first feature is horizontally higher than the second feature.

[0076] In the description of the present application, descriptions with reference to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0077] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made hereto without departing from the principles and spirit of the application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A control method for a central purification system, the central purification system comprising: A central fan (20) is installed in the central air duct (10), a sub-air duct (30) connecting the central air duct (10) to each floor user room, a sub-fan (40) installed in each floor user room, and a distribution valve (50) controlling the flow area between the central air duct (10) and the sub-air duct (30), wherein the central fan (20) provides a central air volume of Qbn to any floor, and the sub-fan (40) increases the air volume by Qa, characterized in that, Establish a database of air volume demand for users on each floor of the central purification system. The air volume demand database contains at least the air volume demand Qcn for any floor, the maximum air volume Qsn, and Qsn = Qbn + Qa, Qsn > Qcn always holds true. Adjust the speed of the central fan (20) and the opening of the distribution valve (50) so that the current air volume is Qbn, and the air volumes of Qb1~Qbn are the same, and the air volumes of Qc1~Qcn are the same. If Qbn≥Qcn, then maintain the current working state to keep the air volume stable, where n is a positive integer representing the corresponding floor; The control method further includes: Calculate the difference Qm between the maximum air volume Qsn and the required air volume Qcn; If Qm ≤ the first airflow threshold, then maintain the current working state.

2. The control method for the central purification system according to claim 1, characterized in that, The control method further includes: if Qbn < Qcn, then turn on the sub-fan (40) to increase the current air volume to the maximum air volume Qsn.

3. The control method for the central purification system according to claim 1, characterized in that, The control method further includes: if Qm > first air volume threshold, then reduce the current air volume to Qs'n, where Qs'n < Qsn.

4. The control method for the central purification system according to claim 3, characterized in that, The reduction of the current air volume to Qs'n, where Qs'n < Qsn, specifically involves reducing the rotational speed of the central fan (20); and / or reducing the rotational speed of the sub-fan (40); and / or reducing the opening of the distribution valve (50).

5. The control method for the central purification system according to claim 1, characterized in that, The specific steps for establishing the air volume demand database for users at each level of the central purification system are as follows: Obtain data on the number of floors in the building where the central air purification system is located, the number of floors where the system is in operation, the operating rate, and the required air volume for each floor; Based on the above data, a correspondence is established between the opening degree of the distribution valve (50) and the operating frequency of the host.

6. A control device for implementing the control method according to any one of claims 1-5, characterized in that, include: The acquisition module (210) is used to acquire the current air volume; The control module (220) is used to turn on the sub-fan (40) if Qbn < Qcn. The control module (220) is also used to: if Qm > first air volume threshold, control to reduce the speed of the central fan (20); and / or control to reduce the speed of the sub-fan (40); and / or control to reduce the opening of the distribution valve (50).

7. A central purification system, characterized in that, include: processor; A memory for storing executable instructions of the processor; wherein the processor is configured to perform the control method as described in any one of claims 1-5.

8. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the terminal device, the central purification system is able to perform the control method as described in any one of claims 1-5.

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