Control method and device of central range hood system and central range hood system

Abstract

The present invention provides a control method and device for a central range hood system and a central range hood system. The central range hood system includes a main unit and multiple indoor range hoods. When the multiple indoor range hoods are not working, the input current of the centrifugal fan of the main unit is detected; the use status of the filter of the main unit is determined based on the input current and a preset theoretical current value; wherein the use status of the filter includes a to-be-adjusted state and a to-be-replaced state; the use status of the filter is sent to a terminal device of a maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter. The use status of the filter of the main unit can be determined based on the input current of the centrifugal fan of the main unit and a preset theoretical current value, and the use status of the filter is sent to the terminal device of the maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter. The maintenance personnel can be reminded in time to perform maintenance and protection on the main unit.

Description

Technical Field

[0001] The present invention relates to the technical field of central range hoods, and in particular to a control method and device for a central range hood system and a central range hood system. Background Art

[0002] At present, the central range hood system mostly adopts the design of centrifugal fan and integrated filter. Under the action of the centrifugal fan, the oil fume gas enters the main unit through the variable diameter, and then enters the internal space of the fan from both sides of the fan.

[0003] After the main unit of the central range hood has been working for a long time, the left and right sides of the filter are more likely to be clogged by particles in the oil smoke than the middle part, causing excessive air resistance. When the filter is maintained and replaced, the middle part of the filter is often not fully utilized, resulting in unnecessary waste. In addition, the main unit filter maintenance of the central range hood system generally adopts regular maintenance, which is difficult to maintain the main unit in a timely and rapid manner. It is likely that the service life of the main unit will be shortened due to untimely maintenance, or material waste will be caused due to premature maintenance. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a control method and device of a central range hood system and a central range hood system, so as to timely perform maintenance and protection on the main unit.

[0005] In a first aspect, an embodiment of the present invention provides a control method for a central range hood system, the central range hood system comprising a main unit and multiple indoor range hoods, the method comprising: when the multiple indoor range hoods are not working, detecting the input current of the centrifugal fan of the main unit; determining the usage status of the filter of the main unit based on the input current and a preset theoretical current value; wherein the usage status of the filter comprises a to-be-adjusted status and a to-be-replaced status; and sending the usage status of the filter to a terminal device of a maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter.

[0006] In a preferred embodiment of the present application, the step of detecting the input current of the centrifugal fan of the host includes: detecting the input current of the centrifugal fan of the host based on a preset time interval.

[0007] In a preferred embodiment of the present application, the above-mentioned step of detecting the input current of the centrifugal fan of the host when multiple indoor range hoods are not working includes: opening the air supply valve of the host when multiple indoor range hoods are not working; controlling the host to operate at a specified frequency so that external air enters the host through the air supply valve; and detecting the input current of the centrifugal fan of the host.

[0008] In a preferred embodiment of the present application, the above-mentioned theoretical current value includes: a first theoretical current value and a second theoretical current value, wherein the first theoretical current value is greater than the second theoretical current value; the above-mentioned step of determining the usage status of the filter of the host based on the input current and the pre-set theoretical current value includes: if the input current is less than or equal to the first theoretical current value, and the input current is greater than the second theoretical current value, determining that the usage status of the filter is a state to be adjusted; if the input current is less than or equal to the second theoretical current value, determining that the usage status of the filter is a state to be replaced.

[0009] In a preferred embodiment of the present application, the usage status of the above-mentioned filter also includes: normal status; the above-mentioned step of determining the usage status of the filter of the host based on the input current and the pre-set theoretical current value also includes: if the input current is greater than the first theoretical current value, determining that the usage status of the filter is a normal state.

[0010] In a preferred embodiment of the present application, the above-mentioned step of sending the usage status of the filter to the terminal device of the maintenance personnel includes: sending the usage status of the filter to the cloud platform, so that the cloud platform sends the usage status of the filter to the terminal device of the maintenance personnel.

[0011] In a preferred embodiment of the present application, the above-mentioned host includes multiple filters, and the step of adjusting the position of the filters includes: adjusting the filter set in the middle part of the multiple filters to the two side parts of the multiple filters; adjusting the filters set in the two side parts of the multiple filters to the middle part of the multiple filters.

[0012] In a preferred embodiment of the present application, the above method also includes: obtaining the count value of the filter; if the input current is less than or equal to the first theoretical current value, and the input current is greater than the second theoretical current value, the step of determining that the use status of the filter is a state to be adjusted includes: if the input current is less than or equal to the first theoretical current value, the input current is greater than the second theoretical current value, and the count value is the first value, determining that the use status of the filter is a state to be adjusted, and adjusting the count value to the second value.

[0013] In a preferred embodiment of the present application, the above method further includes: after replacing the filter, adjusting the count value to the first value.

[0014] In a second aspect, an embodiment of the present invention further provides a control device for a central range hood system, the central range hood system comprising a main unit and a plurality of indoor range hoods, the device comprising: an input current detection module, for detecting the input current of the centrifugal fan of the main unit when the plurality of indoor range hoods are not working; a usage status determination module, for determining the usage status of the filter of the main unit based on the input current and a preset theoretical current value; wherein the usage status of the filter comprises a to-be-adjusted status and a to-be-replaced status; a usage status sending module, for sending the usage status of the filter to a terminal device of a maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter.

[0015] In a third aspect, an embodiment of the present invention further provides a central range hood system, comprising: a main unit and multiple indoor range hoods; the main unit comprises: a filter, a centrifugal fan, a control module, a current detection element and a signal transmission module; the current detection element is used to detect the input current of the centrifugal fan of the main unit when the multiple indoor range hoods are not working; the control module is used to determine the usage status of the filter of the main unit based on the input current and a preset theoretical current value; wherein the usage status of the filter includes a to-be-adjusted status and a to-be-replaced status; the signal transmission module is used to send the usage status of the filter to the terminal device of the maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter.

[0016] In a preferred embodiment of the present application, the host further includes: an air supply valve and a counting element; the counting element is used to store the count value of the filter.

[0017] The embodiments of the present invention bring the following beneficial effects:

[0018] The control method, device and central range hood system provided by the embodiment of the present invention can determine the use status of the filter of the host according to the input current of the centrifugal fan of the host and the preset theoretical current value, and send the use status of the filter to the terminal device of the maintenance personnel, so that the maintenance personnel can replace the filter or adjust the position of the filter. The maintenance personnel can be reminded in time to perform maintenance and protection on the host.

[0019] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.

[0020] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of a central range hood system provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a host of a central range hood system provided by an embodiment of the present invention;

[0024] Figure 3 A flow chart of a control method of a central range hood system provided by an embodiment of the present invention;

[0025] Figure 4 A flow chart of another control method of a central range hood system provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a filter screen of a host provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of a current-based control method for a central range hood system provided by an embodiment of the present invention;

[0028] Figure 7 A schematic structural diagram of a central range hood system provided by an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the structure of a host provided by an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure of a control device for a central range hood system provided by an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0032] icon:

[0033] 1-main unit; 2-indoor range hood; 3-variable diameter; 4-filter; 41-first filter; 42-second filter; 43-third filter; 44-fourth filter; 5-filter guide groove; 6-centrifugal fan; 7-fan housing; 8-hood housing; 9-control module; 91-signal transmitting module; 92-current detecting element; 93-counting element; 10-air outlet; 11-wind pressure detecting element; 12-air supply valve; 13-driving motor; 901-input current detecting module; 902-usage status determining module; 903-usage status sending module; 100-memory; 101-processor; 102-bus; 103-communication interface. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] At present, central range hood systems mostly use centrifugal fans and integrated filters. Figure 1 A schematic diagram of a central range hood system shown in FIG. Figure 2 A schematic diagram of a main unit of a central range hood system is shown, in which the oil fume gas enters the main unit through a variable diameter under the action of a centrifugal fan, and then enters the internal space of the fan from both sides of the fan.

[0036] After the main unit of the central range hood has been working for a long time, the left and right sides of the filter are more likely to be clogged by particulate matter in the oil fume gas than the middle part, causing excessive air resistance. When the filter is maintained and replaced, the middle part of the filter is often not fully utilized, resulting in unnecessary waste. In addition, the main unit filter maintenance of the central range hood system generally adopts a regular maintenance method, which is difficult to maintain the main unit in a timely and rapid manner. It is likely that the service life of the main unit will be shortened due to untimely maintenance, or that materials will be wasted due to premature maintenance. Therefore, the existing central range hood system has the problems of low utilization rate of the integrated filter and waste of materials; the regular maintenance method has the problem of untimely or premature maintenance.

[0037] Based on this, the embodiments of the present invention provide a control method, device and central range hood system of a central range hood system, which provides a central range hood host with improved filter utilization, and can timely perform maintenance and protection on the host by detecting the input current of the centrifugal fan of the host.

[0038] To facilitate understanding of this embodiment, a control method for a central range hood system disclosed in an embodiment of the present invention is first introduced in detail.

[0039] Embodiment 1:

[0040] An embodiment of the present invention provides a control method for a central range hood system. The central range hood system includes a host and multiple indoor range hoods. The host is generally installed on the roof, and the indoor range hoods are installed in the user's house.

[0041] Based on the above description, see Figure 3 A flow chart of a control method of a central range hood system is shown, and the control method of the central range hood system comprises the following steps:

[0042] Step S302, when the multiple indoor range hoods are not working, detecting the input current of the centrifugal fan of the host.

[0043] The central range hood is a device that connects the range hoods on the same common flue to communicate and network, and systematically coordinates and controls the actual exhaust volume of each range hood. The central range hood in this embodiment can use a centrifugal fan. A centrifugal fan is a fan in which the airflow enters the blade space from the fan axis, and then, driven by the impeller, rotates with the impeller on the one hand, and increases energy under the action of inertia on the other hand, and leaves the impeller in the radial direction, and does work by the centrifugal force generated.

[0044] In this embodiment, when multiple indoor range hoods are not working, the air supply valve of the host can be opened and the input current of the centrifugal fan of the host can be detected. Generally speaking, the more dust there is on the filter, the higher the input current of the centrifugal fan, and the more it needs to be replaced.

[0045] Step S304, determining the use status of the filter of the host based on the input current and the preset theoretical current value; wherein the use status of the filter includes a state to be adjusted and a state to be replaced.

[0046] Since a centrifugal fan is used, dust is more likely to accumulate on the left and right sides of the main unit filter, while dust is less likely to accumulate in the center of the main unit filter. Therefore, the main unit of this embodiment can adopt a plurality of filter screens, and the positions can be adjusted with each other, so that the frequency and number of times of replacing the filter screen can be reduced, thereby improving the utilization rate of the filter screen.

[0047] The more dust there is on the filter, the higher the input current of the centrifugal fan, and the more it needs to be replaced. Compare the input current with the preset theoretical current value. If the input current is lower, it can be considered that the host does not need to replace the filter.

[0048] If the input current is relatively high, it can be considered that there is a lot of dust on the filters on the left and right sides of the host, but not much dust on the filter in the center. In order to increase the utilization rate of the filters and avoid waste of materials, the filters on the left and right sides can be swapped with the filters in the center. It can be confirmed that the usage status of the filters is to be adjusted.

[0049] If the input current is very high, it can be considered that there is a lot of dust on the filters on the left and right sides and the center part of the host. At this time, all filters need to be replaced. It can be confirmed that the filter usage status is to be replaced.

[0050] Step S306: Send the usage status of the filter to the terminal device of the maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter.

[0051] The central range hood system in this embodiment can be connected to the terminal device of the maintenance personnel in communication, wherein the terminal device can be a mobile phone, computer, tablet computer, etc., which has communication and interaction functions. Therefore, after obtaining the usage status of the filter, the usage status of the filter can be sent to the terminal device of the maintenance personnel, and the maintenance personnel can replace the filter or adjust the position of the filter in time according to the usage status of the filter displayed by the terminal device.

[0052] The control method of a central range hood system provided by the embodiment of the present invention can determine the use status of the filter of the host according to the input current of the centrifugal fan of the host and the preset theoretical current value, and send the use status of the filter to the terminal device of the maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter. The maintenance personnel can be reminded in time to perform maintenance and protection on the host.

[0053] Embodiment 2:

[0054] This embodiment provides another control method for a central range hood system. This method is implemented on the basis of the above embodiment. Figure 4 The flowchart of another control method of a central range hood system is shown, and the control method of the central range hood system comprises the following steps:

[0055] Step S402: When the plurality of indoor range hoods are not in operation, the input current of the centrifugal fan of the host is detected based on a preset time interval.

[0056] Specifically, when multiple indoor range hoods are not working, the air supply valve of the host is opened; the host is controlled to operate at a specified frequency so that external air enters the host through the air supply valve; and the input current of the centrifugal fan of the host is detected.

[0057] When the central range hood is not in working state (all indoor range hoods are not working), the control module can open the main unit's air supply valve and control the main unit of the central range hood to operate at a specified frequency. At this time, the wind outside the main unit can enter the main unit from the air supply valve. The current detection element of the main unit can detect the input current of the main unit's centrifugal fan and judge the filter blockage condition through the input current of the centrifugal fan.

[0058] In order to prevent wasting resources due to excessive detection times, the input current can be set to be detected only once within a preset time interval. Generally speaking, it is sufficient to set the detection once a day.

[0059] Step S404, determining the use status of the filter of the host based on the input current and the preset theoretical current value; wherein the use status of the filter includes a state to be adjusted and a state to be replaced.

[0060] Specifically, the theoretical current value includes: a first theoretical current value and a second theoretical current value, wherein the first theoretical current value is greater than the second theoretical current value; if the input current is less than or equal to the first theoretical current value, and the input current is greater than the second theoretical current value, it is determined that the use status of the filter is a state to be adjusted; if the input current is less than or equal to the second theoretical current value, it is determined that the use status of the filter is a state to be replaced.

[0061] The control module can set the first theoretical current value I1 and the second theoretical current value I2 of the centrifugal fan at a specific frequency. I1 is the theoretical input current of the centrifugal fan when the filter needs maintenance, and I2 is the theoretical input current of the centrifugal fan when the filter needs to be maintained and replaced (replaced with a new filter). Among them, I1 and I2 can be obtained through experiments and simulation calculations, and I2 < I1.

[0062] When the central range hood is not in operation, the control module controls the host to enter the filter status detection mode. The current detection element can send the detected input current value I3 of the centrifugal fan to the control module, and the control module compares and analyzes the detected input current value I3 with the theoretical input current values ​​I1 and I2 set in the control module.

[0063] In addition, the use state of the filter also includes: a normal state; if the input current is greater than the first theoretical current value, it is determined that the use state of the filter is a normal state.

[0064] When I3>I1, the control module can determine that the filter is in a good state and determine that the use state of the filter is a normal state.

[0065] In addition, this embodiment can also obtain the count value of the filter; if the input current is less than or equal to the first theoretical current value, the input current is greater than the second theoretical current value, and the count value is the first value, the use status of the filter is determined to be a state to be adjusted, and the count value is adjusted to the second value.

[0066] When I2≤I3≤I1, the control module can determine that the use status of the filter is to be adjusted. The control module determines whether the value of the counting element (the counting element is used to store the count value of the filter) is 0 (i.e., the first value) or 1 (i.e., the second value). If the count value is the first value, it means that the filter of the host has not been adjusted before, and the position of the filter can be adjusted; if the count value is the first value, it means that the filter of the host has been adjusted before, and the effect of adjusting the position of the filter is not good at this time, and the dust on the filter has not reached the point where it needs to be replaced. Therefore, no operation can be performed at this time until the input current is greater than the second theoretical current value.

[0067] When I3≤I2, the control module can determine that the use status of the filter is to be replaced. At this time, there is too much dust on the filter and it needs to be replaced in time. In addition, after the filter is replaced, the count value can be adjusted to the first value, indicating that the replaced filter has not performed the step of adjusting the filter position, that is, the count value is cleared to 0.

[0068] Step S406: Send the usage status of the filter to the terminal device of the maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter.

[0069] Specifically, the use status of the filter can be sent to the cloud platform, so that the cloud platform sends the use status of the filter to the terminal device of the maintenance personnel. In this embodiment, the central range hood system and the terminal device of the maintenance personnel can be connected through the cloud platform.

[0070] Specifically, the position of the filter can be adjusted by the following steps: adjusting the filter set in the middle part of multiple filter screens to be set on both sides of multiple filter screens; adjusting the filter set on both sides of multiple filter screens to be set in the middle part of multiple filter screens.

[0071] See also Figure 5The schematic diagram of a filter screen of a host shown in FIG. 4 can be arranged below the centrifugal fan 6, namely: a first filter screen 41, a second filter screen 42, a third filter screen 43, and a fourth filter screen 44. Among them, the second filter screen 42 and the third filter screen 43 are filter screens arranged at both sides of the plurality of filter screens, and the first filter screen 41 and the fourth filter screen 44 are filter screens arranged at the middle of the plurality of filter screens. When adjusting, the first filter screen 41 and the second filter screen 42 can be exchanged, and the third filter screen 43 and the fourth filter screen 44 can be exchanged; or the first filter screen 41 and the third filter screen 43 can be exchanged, and the second filter screen 42 and the fourth filter screen 44 can be exchanged.

[0072] The overall process provided by the embodiment of the present invention can be found in Figure 6 A schematic diagram of a current-based control method for a central range hood system is shown. When the central range hood is not in operation, the control module controls the host to enter a filter status detection mode. The current detection element sends the detected input current value I3 of the centrifugal fan to the control module, and the control module compares and analyzes the detected input current value I3 with the theoretical input current value I1 set in the control module.

[0073] When I3>I1, the control module determines that the filter is in good condition; when I3≤I1, the control module determines that the count value is 0 or 1. When the value is 0, the control module controls the signal transmission module to send a signal to the central range hood cloud platform, and sends the filter maintenance information to the maintenance personnel through the cloud platform. After the maintenance personnel replaces the filter position, they adjust the count value to 1 and enable the host to operate normally; if the control module determines that the count element value is 1, the control module does not do anything.

[0074] When I3≤I2 is detected in the filter status detection mode, the control module controls the signal transmission module to send a signal to the central range hood cloud platform, and the filter maintenance and replacement information is sent to the maintenance personnel through the cloud platform. After the maintenance personnel replaces the new filter, the count value is set to 0.

[0075] The above method provided by the embodiment of the present invention can divide the integrated filter into four small filters for splicing and position adjustment, and can timely perform maintenance on the host. By replacing the positions of the filters on both sides and the middle filter, the filters can be fully utilized. The maintenance personnel can be reminded to perform maintenance on the host in time to avoid shortening the service life of the host due to untimely maintenance or wasting materials due to premature maintenance. In this way, the utilization rate of the filter can be improved and the service life of the host can be increased.

[0076] Embodiment three:

[0077] The embodiment of the present invention provides a central range hood system, see Figure 7 The structural schematic diagram of a central range hood system is shown, and the central range hood system comprises: a main unit 1 and a plurality of indoor range hoods 2.

[0078] See also Figure 8 A structural schematic diagram of a host is shown, the host 1 includes: a filter 4, a centrifugal fan 6, a control module 9, a current detection element 92 and a signal transmission module 91; the current detection element is used to detect the input current of the centrifugal fan of the host when multiple indoor range hoods are not working; the control module is used to determine the use status of the filter of the host based on the input current and a preset theoretical current value; wherein the use status of the filter includes a state to be adjusted and a state to be replaced; the signal transmission module is used to send the use status of the filter to the terminal device of the maintenance personnel, so that the maintenance personnel can replace the filter or adjust the position of the filter.

[0079] In addition, the host 1 further comprises: an air supply valve 12 and a counting element 93; the counting element is used to store the count value of the filter.

[0080] The host 1 further comprises: a diameter reducer 3 , a filter guide groove 5 , a fan housing 7 , a hood housing 8 , an air outlet 10 , a wind pressure detection element 11 and a drive motor 13 .

[0081] like Figure 5 As shown, in the filter screen 4 of this embodiment, the integrated filter screen design can be divided into four filter screens of the same size.

[0082] The filter screen guide grooves 5 are arranged opposite to each other at the top and bottom of the fan housing 7 and are used to fix the filter screen 4 .

[0083] The control module 9 includes a signal transmission module 91, a current detection element 92, and a counting element 93. The signal transmission module 91 can send filter maintenance information to the cloud platform of the central range hood; the current detection element 92 is used to detect the input current of the centrifugal fan 6; the counting element 93 records the number of filter maintenance times, which can be set to 0 (the set value after the maintenance replaces the new filter, i.e. the first value) and 1 (the set value after the filter positions on both sides and the middle filter position are swapped, i.e. the second value), which is set by the maintenance personnel after the maintenance replacement.

[0084] The wind pressure detection element 11 is arranged at the front end of the filter screen, and is used to detect the wind pressure at the front end of the filter screen. The wind pressure detection element 11 is electrically connected to the control module 9 .

[0085] The air supply valve 12 can be used for filter status detection when the central range hood is not in operation; the drive motor 13 drives the air supply valve 12 to open and close, and the drive motor is electrically connected to the control module 9.

[0086] Technicians in the relevant field can clearly understand that, for the convenience and simplicity of description, the specific working process of the central range hood system described above can refer to the corresponding process in the embodiment of the control method of the aforementioned central range hood system, and will not be repeated here.

[0087] Embodiment 4:

[0088] Corresponding to the above method embodiment, the embodiment of the present invention provides a control device for a central range hood system, the central range hood system comprising a host and a plurality of indoor range hoods, see Fig. 9 The schematic diagram of the structure of a control device of a central range hood system is shown, and the control device of the central range hood system comprises:

[0089] An input current detection module 901 is used to detect the input current of the centrifugal fan of the host when multiple indoor range hoods are not working;

[0090] A usage status determination module 902 is used to determine the usage status of the filter of the host based on the input current and a preset theoretical current value; wherein the usage status of the filter includes a state to be adjusted and a state to be replaced;

[0091] The usage status sending module 903 is used to send the usage status of the filter to the terminal device of the maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter.

[0092] The control device of a central range hood system provided by the embodiment of the present invention can determine the use status of the filter of the host according to the input current of the centrifugal fan of the host and the preset theoretical current value, and send the use status of the filter to the terminal device of the maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter. The maintenance personnel can be reminded in time to perform maintenance and protection on the host.

[0093] The input current detection module 901 is used to detect the input current of the centrifugal fan of the host based on a preset time interval.

[0094] The input current detection module 901 is used to open the air supply valve of the host when multiple indoor range hoods are not working; control the host to operate at a specified frequency so that external air enters the host through the air supply valve; and detect the input current of the centrifugal fan of the host.

[0095] The above-mentioned theoretical current value includes: a first theoretical current value and a second theoretical current value, wherein the first theoretical current value is greater than the second theoretical current value; the above-mentioned usage status determination module 902 is used to determine that the usage status of the filter is a state to be adjusted if the input current is less than or equal to the first theoretical current value, and the input current is greater than the second theoretical current value; if the input current is less than or equal to the second theoretical current value, determine that the usage status of the filter is a state to be replaced.

[0096] The use state of the filter screen also includes: a normal state; the use state determination module 902 is further used to determine that the use state of the filter screen is a normal state if the input current is greater than the first theoretical current value.

[0097] The usage status sending module 903 is used to send the usage status of the filter to the cloud platform, so that the cloud platform sends the usage status of the filter to the terminal device of the maintenance personnel.

[0098] The host includes a plurality of filters, and the usage status sending module 903 is used to adjust the filter disposed in the middle of the plurality of filters to the two side portions of the plurality of filters; and to adjust the filter disposed in the two side portions of the plurality of filters to the middle portion of the plurality of filters.

[0099] The above-mentioned device also includes a count value acquisition module, which is used to obtain the count value of the filter; the above-mentioned usage status sending module 903 is used to determine that the usage status of the filter is a state to be adjusted if the input current is less than or equal to the first theoretical current value, the input current is greater than the second theoretical current value, and the count value is the first value, and adjust the count value to the second value.

[0100] The above device also includes a count value adjustment module, which is used to adjust the count value to the first value after the filter is replaced.

[0101] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the control device of the central range hood system described above can refer to the corresponding process in the embodiment of the control method of the aforementioned central range hood system, and will not be repeated here.

[0102] Embodiment five:

[0103] The embodiment of the present invention also provides an electronic device for running the control method of the central range hood system; see Fig.10 A structural schematic diagram of an electronic device is shown, which includes a memory 100 and a processor 101, wherein the memory 100 is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor 101 to implement the control method of the above-mentioned central range hood system.

[0104] Further, Fig.10 The electronic device shown further includes a bus 102 and a communication interface 103 , and the processor 101 , the communication interface 103 and the memory 100 are connected via the bus 102 .

[0105] The memory 100 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 103 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus 102 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.10 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0106] The processor 101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 101. The above processor 101 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present invention can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module may be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 100, and the processor 101 reads the information in the memory 100 and completes the steps of the method of the above embodiment in combination with its hardware.

[0107] An embodiment of the present invention also provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions prompt the processor to implement the control method of the above-mentioned central range hood system. The specific implementation can be found in the method embodiment, which will not be repeated here.

[0108] The control method and device of the central range hood system and the computer program product of the central range hood system provided in the embodiments of the present invention include a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods in the previous method embodiments. The specific implementation can be found in the method embodiments and will not be repeated here.

[0109] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and / or device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0110] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0111] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0112] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0113] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A control method for a central range hood system, characterized in that: The central range hood system comprises a host and a plurality of indoor range hoods, and the method comprises: When the plurality of indoor range hoods are not working, detecting the input current of the centrifugal fan of the host; Determining the use status of the filter of the host based on the input current and a preset theoretical current value; wherein the use status of the filter includes a state to be adjusted and a state to be replaced; Sending the usage status of the filter to a terminal device of a maintenance personnel so that the maintenance personnel can replace the filter or adjust the position of the filter; The theoretical current value includes: a first theoretical current value and a second theoretical current value, wherein the first theoretical current value is greater than the second theoretical current value; the step of determining the use state of the filter of the host based on the input current and the preset theoretical current value includes: if the input current is less than or equal to the first theoretical current value, and the input current is greater than the second theoretical current value, determining that the use state of the filter is to be adjusted; if the input current is less than or equal to the second theoretical current value, determining that the use state of the filter is to be replaced; The host includes a plurality of the filters, and the step of adjusting the positions of the filters includes: adjusting the filter disposed in the middle of the plurality of filters to the positions disposed on both sides of the plurality of filters; adjusting the filter disposed in the positions on both sides of the plurality of filters to the middle of the plurality of filters; The method further includes: obtaining a count value of the filter; if the input current is less than or equal to the first theoretical current value, and the input current is greater than the second theoretical current value, determining that the use state of the filter is a state to be adjusted, comprising: if the input current is less than or equal to the first theoretical current value, the input current is greater than the second theoretical current value, and the count value is a first value, determining that the use state of the filter is a state to be adjusted, and adjusting the count value to a second value; The method further includes: after replacing the filter, adjusting the count value to the first value.

2. The method according to claim 1, characterized in that The step of detecting the input current of the centrifugal fan of the host comprises: The input current of the centrifugal fan of the host is detected based on a preset time interval.

3. The method according to claim 1, characterized in that When the plurality of indoor range hoods are not working, the step of detecting the input current of the centrifugal fan of the host comprises: When the plurality of indoor range hoods are not working, opening the air supply valve of the host; Controlling the host to operate at a specified frequency so that external air can enter the host through the air supply valve; Detect the input current of the centrifugal fan of the host.

4. The method according to claim 1, characterized in that The use state of the filter screen also includes: a normal state; the step of determining the use state of the filter screen of the host based on the input current and a preset theoretical current value also includes: If the input current is greater than the first theoretical current value, it is determined that the use status of the filter is a normal status.

5. The method according to claim 1, characterized in that The step of sending the usage status of the filter to a terminal device of a maintenance personnel comprises: The usage status of the filter is sent to the cloud platform, so that the cloud platform sends the usage status of the filter to the terminal device of the maintenance personnel.

6. A control device for a central range hood system, characterized in that: The central range hood system comprises a main unit and a plurality of indoor range hoods, and the device comprises: An input current detection module, used for detecting the input current of the centrifugal fan of the host when the plurality of indoor range hoods are not working; A usage status determination module, used to determine the usage status of the filter of the host based on the input current and a preset theoretical current value; wherein the usage status of the filter includes a waiting-to-adjust state and a waiting-to-replace state; A usage status sending module, used to send the usage status of the filter to a terminal device of a maintenance personnel, so that the maintenance personnel can replace the filter or adjust the position of the filter; The theoretical current value includes: a first theoretical current value and a second theoretical current value, wherein the first theoretical current value is greater than the second theoretical current value; the use state determination module is used to determine that the use state of the filter is a state to be adjusted if the input current is less than or equal to the first theoretical current value and the input current is greater than the second theoretical current value; if the input current is less than or equal to the second theoretical current value, determine that the use state of the filter is a state to be replaced; The host comprises a plurality of the filters, and the usage status sending module is used to adjust the filter disposed in the middle of the plurality of filters to the two sides of the plurality of filters; and to adjust the filter disposed in the two sides of the plurality of filters to the middle of the plurality of filters; a count value acquisition module, used to acquire the count value of the filter; the use status sending module, used to determine that the use status of the filter is a to-be-adjusted status if the input current is less than or equal to the first theoretical current value, the input current is greater than the second theoretical current value, and the count value is the first value, and adjust the count value to the second value; The value adjustment module is used to adjust the count value to the first value after the filter is replaced.

7. A central range hood system, characterized in that: The central range hood system comprises: a host and a plurality of indoor range hoods; the host comprises: a filter, a centrifugal fan, a control module, a current detection element and a signal transmission module; The current detection element is used to detect the input current of the centrifugal fan of the host when the plurality of indoor range hoods are not working; The control module is used to determine the use state of the filter of the host based on the input current and a preset theoretical current value; wherein the use state of the filter includes a state to be adjusted and a state to be replaced; The signal transmission module is used to send the use status of the filter to the terminal device of the maintenance personnel, so that the maintenance personnel can replace the filter or adjust the position of the filter; The theoretical current value includes: a first theoretical current value and a second theoretical current value, wherein the first theoretical current value is greater than the second theoretical current value; the control module is used to determine that the use state of the filter is a state to be adjusted if the input current is less than or equal to the first theoretical current value and the input current is greater than the second theoretical current value; if the input current is less than or equal to the second theoretical current value, determine that the use state of the filter is a state to be replaced; The host includes a plurality of the filters, and the step of adjusting the positions of the filters includes: adjusting the filter disposed in the middle of the plurality of filters to the positions disposed on both sides of the plurality of filters; adjusting the filter disposed in the positions on both sides of the plurality of filters to the middle of the plurality of filters; The host also includes: an air supply valve and a counting element; the counting element is used to store the count value of the filter; if the input current is less than or equal to the first theoretical current value, the input current is greater than the second theoretical current value, and the count value is the first value, the use status of the filter is determined to be a state to be adjusted, and the count value is adjusted to the second value; after replacing the filter, the count value is adjusted to the first value.

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