Range hood with PM2.5 detection, color modulation and illumination functions

Abstract

The utility model discloses a PM2.5 (Particulate Matter 2.5) detection color-mixing lighting range hood, which comprises a range hood body, a PM2.5 concentration detection component, a control module, a lighting component, an operation module and a lighting driving module, and the control module is respectively and electrically connected with the PM2.5 concentration detection component and an oil smoke fan so as to control the rotating speed of the oil smoke fan according to a PM2.5 concentration signal; the lighting assembly at least comprises a first LED lamp set and a second LED lamp set which are different in color, and the control module is connected with the lighting assembly through the lighting driving module so that the first LED lamp set and the second LED lamp set can be connected in parallel to form at least part of driving branches. The control module changes the magnitude of a main path current passing through the driving branch according to the control signal so as to adjust the brightness of the illumination driving module, and the control module changes the ratio of a first current passing through the first LED lamp group to a second current passing through the second LED lamp group according to the PM2.5 concentration signal so as to adjust the mixed light color of the illumination driving module; the design provides a visual use feeling, is convenient for a user to make adjustment, and is convenient and reliable to use.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen and bathroom equipment, in particular to a PM2.5 detection, color mixing and lighting range hood. Background Art

[0002] For existing range hoods, most of them are provided with a PM2.5 concentration detection component to detect the PM2.5 concentration in the environment, and use the detected PM2.5 concentration signal to adjust the rotation speed of the oil fume fan of the range hood. When the PM2.5 concentration is relatively high, the rotation speed of the oil fume fan can be automatically increased. Correspondingly, when the PM2.5 concentration is relatively low, the rotation speed of the oil fume fan can be decreased. However, users cannot intuitively feel the level of PM2.5 concentration in the environment. Only when the PM2.5 concentration is too high and causes extreme discomfort to the user can the user know that the PM2.5 concentration in the environment is at a relatively high level. Some manufacturers will set a display on the range hood to present the PM2.5 concentration information, etc. However, for the display of the value, users still do not have an intuitive concept, do not know the current PM2.5 concentration in the environment, and cannot judge whether they need to move to other areas and enter the area where the range hood is located after the oil fume fan discharges the oil fume. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a PM2.5 detection, color mixing and lighting range hood, which provides users with a more intuitive use experience, facilitates users to make reasonable adjustments, and is convenient and reliable to use.

[0004] A PM2.5 detection, color mixing and lighting range hood according to an embodiment of the first aspect of the utility model includes: a range hood body, which is internally provided with an oil fume fan; a PM2.5 concentration detection component, which is arranged on the range hood body, and the PM2.5 concentration detection component is used for detecting a PM2.5 concentration signal; a control module, which is electrically connected to the PM2.5 concentration detection component and the oil fume fan respectively so as to be able to control the rotation speed of the oil fume fan according to the PM2.5 concentration signal; a lighting component, which is arranged on the range hood body, and the lighting component at least includes a first LED lamp group and a second LED lamp group of different colors; an operation module, which is arranged on the range hood body, and the operation module forms a control signal when being operated; a lighting driving module, the control module is connected to the lighting component through the lighting driving module so that the first LED lamp group and the second LED lamp group are connected in parallel to form at least part of a driving branch. Wherein, the control module controls the lighting driving module to change the magnitude of the main circuit current passing through the driving branch according to the control signal so as to adjust the brightness of the lighting driving module, and the control module controls the lighting driving module to change the ratio of the first current passing through the first LED lamp group and the second current passing through the second LED lamp group according to the PM2.5 concentration signal so as to adjust the mixed light color of the lighting driving module.

[0005] A PM2.5 detection, color - adjusting and lighting range hood according to an embodiment of the present utility model has at least the following beneficial effects:

[0006] For the PM2.5 detection, color - adjusting and lighting range hood of the present utility model, a PM2.5 concentration detection component detects the PM2.5 concentration in the environment to form a PM2.5 concentration signal. The control module changes the rotation speed of the oil fume fan according to the PM2.5 concentration, thereby purifying the air in the environment. In cooperation with the operation of the oil fume fan, the lighting component on the range hood can also reflect the PM2.5 concentration through the light color. After the user sets the lighting brightness of the lighting component through the operation module, the control module controls the lighting drive module to change the magnitude of the main current passing through the drive branch according to the manipulation signal to adjust the brightness of the lighting drive module. Then, while keeping the magnitude of the main current unchanged, the control module changes the ratio of the first current to the second current according to the PM2.5 concentration to change the mixed - light color. Both the rotation speed of the oil fume fan and the mixed - light color change with the change of the PM2.5 concentration. While ensuring that the basic lighting meets the user's needs, the user can more intuitively know the change of the PM2.5 concentration in the environment. This design provides a more intuitive user experience, facilitates the user to make reasonable adjustments, and is convenient and reliable to use.

[0007] According to some embodiments of the present utility model, the lighting drive module includes a first semiconductor switch tube Q3, a second semiconductor switch tube Q4, and a third semiconductor switch tube Q5. The second switch tube Q4 is connected in series with the first LED lamp group to form at least part of a first series branch. The switch tube Q5 is connected in series with the second LED lamp group to form at least part of a second series branch. The first series branch and the second series branch are connected in parallel to form at least part of a parallel branch. The parallel branch is connected in series with the first switch tube Q3 to form at least part of the drive branch. The control module is respectively connected to the controlled ends of the first switch tube Q3, the second switch tube Q4, and the third switch tube Q5.

[0008] According to some embodiments of the present utility model, the color temperature of the first LED lamp group is lower than the color temperature of the second LED lamp group. The higher the PM2.5 concentration, the higher the ratio of the first current to the second current.

[0009] According to some embodiments of the present utility model, the PM2.5 concentration detection component includes a light emitter and a light receiver. The light emitter and the light receiver face each other and are spaced apart. The control module is respectively connected to the light emitter and the light receiver.

[0010] According to some embodiments of the present utility model, the PM2.5 concentration detection component includes a base case and a diversion fan. A diversion air duct is provided inside the base case. The base case is provided with an air inlet and an air outlet that are both communicated with the diversion air duct. The light emitter, the light receiver, and the diversion fan are all arranged in the base case and located in the diversion air duct. The diversion fan is used to guide the air flow to flow into the diversion air duct from the air inlet and flow out from the air outlet.

[0011] According to some embodiments of the present utility model, along the air flow direction, the diversion fan is located in front of the light emitter and the light receiver.

[0012] According to some embodiments of the present utility model, the PM2.5 detection and color adjustment lighting range hood further includes a speed regulation driving module. The control module is connected to the range hood fan through the speed regulation driving module to change the speed of the range hood fan. Among them, the higher the PM2.5 concentration, the greater the speed.

[0013] According to some embodiments of the present utility model, the lighting component further includes an auxiliary LED lamp group and a switch module. The control module is connected to the auxiliary LED lamp group through the switch module to control the lighting or extinguishing of the auxiliary LED lamp group.

[0014] According to some embodiments of the present utility model, a display screen is further arranged on the range hood body. The control module is connected to the display screen to display PM2.5 concentration information.

[0015] According to some embodiments of the present utility model, the operation module includes one or a combination of a capacitive touch sensor, a push button, and a gesture sensor.

[0016] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0018] Figure 1 It is a schematic diagram of the principle structure of one embodiment of the range hood of the present utility model;

[0019] Figure 2 It is a schematic circuit diagram of the control module of one embodiment of the range hood of the present utility model;

[0020] Figure 3 It is a schematic circuit diagram of the lighting driving module of one embodiment of the range hood of the present utility model;

[0021] Figure 4 Schematic diagram of the speed regulation drive module of one embodiment of the range hood of the present utility model;

[0022] Figure 5 Schematic diagram of the structure of the PM2.5 concentration detection component of one embodiment of the range hood of the present utility model.

[0023] Reference numerals:

[0024] PM2.5 concentration detection component 100; light emitter 110; light receiver 120; base shell 130; diversion air duct 131; air inlet 132; air outlet 133; diversion fan 140; control module 200; lighting component 300; first LED lamp group 310; second LED lamp group 320; auxiliary LED lamp group 330; switch module 340; operation module 400; lighting drive module 500; oil fume fan 600; speed regulation drive module 610; display screen 700. Detailed description of the specific implementation

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0026] In the description of the present utility model, it should be understood that for the orientation description, terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model.

[0027] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] As Figures 1-5 shown, a PM2.5 detection color - adjusted lighting range hood according to an embodiment of the first aspect of the present utility model includes a range hood body, a PM2.5 concentration detection component 100, a control module 200, a lighting component 300, an operation module 400, and a lighting driving module 500. A smoke exhaust fan 600 is provided inside the range hood body. The PM2.5 concentration detection component 100 is disposed on the range hood body. The PM2.5 concentration detection component 100 is used to detect PM2.5 concentration signals. The control module 200 is electrically connected to the PM2.5 concentration detection component 100 and the smoke exhaust fan 600 respectively to be able to control the rotation speed of the smoke exhaust fan 600 according to the PM2.5 concentration signals. The lighting component 300 is disposed on the range hood body. The lighting component 300 at least includes a first LED lamp group 310 and a second LED lamp group 320 of different colors. The operation module 400 is disposed on the range hood body. When the operation module 400 is operated, a control signal is formed. The control module 200 is connected to the lighting component 300 through the lighting driving module 500 so that the first LED lamp group 310 and the second LED lamp group 320 are connected in parallel to form at least part of a driving branch. Among them, the control module 200 controls the lighting driving module 500 to change the magnitude of the main current passing through the driving branch according to the control signal to adjust the brightness of the lighting driving module 500, and the control module 200 controls the lighting driving module 500 to change the ratio of the first current passing through the first LED lamp group 310 and the second current passing through the second LED lamp group 320 according to the PM2.5 concentration signals to adjust the mixed - light color of the lighting driving module 500.

[0030] Among them, the range hood body includes a housing. A smoke exhaust duct is formed inside the housing. The housing is provided with a smoking port and an exhaust port both communicating with the smoke exhaust duct. The smoke exhaust fan 600 is disposed in the smoke exhaust duct. When the smoke exhaust fan 600 operates, it can guide the air flow to enter from the smoking port and discharge from the exhaust port.

[0031] The control module 200, the PM2.5 concentration detection component 100, the lighting component 300, the operation module 400, and the lighting drive module 500 are arranged in the housing. The control module 200 may include an MCU or a CPU and its affiliated circuits. In some embodiments of the present invention, the operation module includes one or a combination of a capacitive touch sensor, a push-button, and a gesture sensor.

[0032] For the PM2.5 detection, color-adjustable lighting range hood of the present invention, the PM2.5 concentration detection component 100 detects the PM2.5 concentration in the environment to form a PM2.5 concentration signal. The control module 200 changes the rotation speed of the oil fume fan 600 according to the PM2.5 concentration, thereby purifying the air in the environment. In cooperation with the operation of the oil fume fan 600, the lighting component 300 on the range hood can also reflect the PM2.5 concentration through the light color. After the user sets the lighting brightness of the lighting component 300 through the operation module 400, the control module 200 controls the lighting drive module 500 to change the magnitude of the main circuit current passing through the drive branch according to the manipulation signal to adjust the brightness of the lighting drive module 500. Then, while keeping the magnitude of the main circuit current unchanged, the control module 200 changes the ratio of the first current to the second current according to the PM2.5 concentration to change the mixed light color. The rotation speed of the oil fume fan 600 and the mixed light color both change with the PM2.5 concentration. While ensuring that the basic lighting meets the user's needs, the user can more intuitively know the change of the PM2.5 concentration in the environment. This design provides a more intuitive user experience, facilitates the user to make reasonable adjustments, and is convenient and reliable to use.

[0033] In some embodiments of the present invention, the lighting drive module 500 includes a semiconductor first switching tube Q3, a semiconductor second switching tube Q4, and a semiconductor third switching tube Q5. The second switching tube Q4 is connected in series with the first LED lamp group 310 to form at least part of the first series branch. The switching tube Q5 is connected in series with the second LED lamp group 320 to form at least part of the second series branch. The first series branch and the second series branch are connected in parallel to form at least part of the parallel branch. The parallel branch is connected in series with the first switching tube Q3 to form at least part of the drive branch. The control module 200 is respectively connected to the controlled end of the first switching tube Q3, the controlled end of the second switching tube Q4, and the controlled end of the third switching tube Q5.

[0034] The user inputs a control signal in the operation module 400. The control module 200 outputs a PWM signal according to the control signal formed by the operation module 400 to control the conduction frequency of the first switching tube Q3, thereby adjusting the magnitude of the main current in the driving branch. Since the first series branch and the second series branch are in parallel, the main current is shunted to the first series branch and the second series branch. The sum of the first current and the second current is equal to the main current. By adjusting the main current, the brightness of the mixed light of the first LED light group 310 and the second LED light group 320 can be changed. By further adjusting the second switching tube Q4 and the third switching tube Q5, the ratio of the first current to the second current is changed. The first LED light group 310 and the second LED light group 320 have different colors, and the change in the current ratio causes the color of the mixed light to change. Specifically, the first switching tube Q3, the second switching tube Q4, and the third switching tube Q5 can be switching tubes, MOS tubes, or thyristors.

[0035] In some embodiments of the present invention, the color temperature of the first LED light group 310 is lower than that of the second LED light group 320. The higher the PM2.5 concentration, the higher the ratio of the first current to the second current. The color temperature of the first LED light group 310 is lower than that of the second LED light group 320. When the ratio is higher, the color temperature of the mixed light is lower, and the color tends to warm light, with a relatively large proportion of red and yellow light, which is suitable for the scenario with a high PM2.5 concentration. When the ratio is lower, the color temperature of the mixed light is higher, and the color tends to cold light, with a relatively large proportion of blue and violet light, which is suitable for the scenario with a low PM2.5 concentration.

[0036] In some embodiments of the present invention, as Figure 5 shown, the PM2.5 concentration detection component 100 includes a light emitter 110 and a light receiver 120. The light emitter 110 and the light receiver 120 face each other and are spaced apart. The control module 200 is respectively connected to the light emitter 110 and the light receiver 120.

[0037] The light emitter 110 and the light receiver 120 can use infrared rays or lasers as the transmission medium. The light emitter 110 and the light receiver 120 face each other and are spaced apart. The light emitter 110 emits light, and PM2.5 in the environment can be suspended in the air and located at the spaced position between the light emitter 110 and the light receiver 120. When the PM2.5 concentration is high, the light transmission is blocked, and the light receiver 120 receives less light. When the PM2.5 concentration is low, the light receiver 120 receives more light, thereby generating a PM2.5 concentration for characterization.

[0038] In some embodiments of the present utility model, the PM2.5 concentration detection assembly 100 includes a base housing 130 and a diversion fan 140. A diversion air duct 131 is provided inside the base housing 130. The base housing 130 is provided with an air inlet 132 and an air outlet 133 that are both communicated with the diversion air duct 131. The light emitter 110, the light receiver 120, and the diversion fan 140 are all arranged in the base housing 130 and located in the diversion air duct 131. The diversion fan 140 is used to guide the air flow to flow into the diversion air duct 131 from the air inlet 132 and flow out from the air outlet 133.

[0039] Among them, the base housing 130 can be arranged on the outer shell of the range hood body. The diversion fan 140 guides the air flow to carry particles from the external environment into the diversion air duct 131 and pass through the interval between the light emitter 110 and the light receiver 120, which is convenient for the light emitter 110 and the light receiver 120 to detect. The light emitter 110 and the light receiver 120 can be located in the relatively independent diversion air duct 131, with less interference and more accurate detection results.

[0040] In some embodiments of the present utility model, along the air flow direction, the diversion fan 140 is located in front of the light emitter 110 and the light receiver 120. The air flow is guided by the diversion fan 140 into the diversion air duct 131, first passes through the interval between the light emitter 110 and the light receiver 120, and then passes through the diversion fan 140. The particles in the air flow detected by the light emitter 110 and the light receiver 120 are not disturbed by the diversion fan 140, and the detection results are more accurate.

[0041] In some embodiments of the present utility model, the PM2.5 detection and color adjustment lighting range hood further includes a speed adjustment driving module 610. The control module 200 is connected to the oil fume fan 600 through the speed adjustment driving module 610 to change the speed of the oil fume fan 600. Among them, the higher the PM2.5 concentration, the greater the speed. The speed adjustment driving module 610 can be a conventional current adjustment chip or a semiconductor switching tube controlled by the control module 200.

[0042] In some embodiments of the present utility model, the lighting assembly 300 further includes an auxiliary LED lamp group 330 and a switch module 340. The control module 200 is connected to the auxiliary LED lamp group 330 through the switch module 340 to control the lighting or extinguishing of the auxiliary LED lamp group 330.

[0043] The auxiliary LED lamp group 330 is also arranged on the housing of the range hood body. The switch module 340 can be a relay switch or a semiconductor switching tube. The control module 200 controls the auxiliary LED lamp group 330 to be turned on or off through the switch module 340. The auxiliary LED lamp group 330 is usually a positive white light lamp, which does not change with the PM2.5 concentration and provides the user's basic lighting rendering requirements.

[0044] In some embodiments of the present invention, a display screen 700 is further arranged on the range hood body, and the control module 200 is connected to the display screen 700 to display PM2.5 concentration information.

[0045] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0046] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A PM2.5 detection and color adjustment lighting range hood, characterized in that: include: The range hood body is provided with a range hood fan; A PM2.5 concentration detection component, disposed on the range hood body, and used to detect a PM2.5 concentration signal; A control module, electrically connected to the PM2.5 concentration detection component and the oil fume fan, respectively, so as to be able to control the rotation speed of the oil fume fan according to the PM2.5 concentration signal; A lighting assembly is arranged on the range hood body, and the lighting assembly comprises at least a first LED light group and a second LED light group of different colors; An operating module, disposed on the range hood body, wherein the operating module is operated to generate a control signal; A lighting driving module, wherein the control module is connected to the lighting component through the lighting driving module so that the first LED light group and the second LED light group are connected in parallel to form at least a partial driving branch, wherein the control module controls the lighting driving module to change the magnitude of the main current passing through the driving branch according to the control signal to adjust the brightness of the lighting driving module, and the control module controls the lighting driving module to change the ratio of the first current passing through the first LED light group and the second current passing through the second LED light group according to the PM2.5 concentration signal to adjust the mixed light color of the lighting driving module.

2. A PM2.5 detection and color adjustment lighting range hood according to claim 1, characterized in that: The lighting driving module includes a first semiconductor switch tube Q3, a second semiconductor switch tube Q4 and a third semiconductor switch tube Q5, the second switch tube Q4 is connected in series with the first LED lamp group to form at least part of a first series branch, the switch tube Q5 is connected in series with the second LED lamp group to form at least part of a second series branch, the first series branch and the second series branch are connected in parallel to form at least part of a parallel branch, the parallel branch is connected in series with the first switch tube Q3 to form at least part of the driving branch, and the control module is respectively connected to the controlled end of the first switch tube Q3, the controlled end of the second switch tube Q4 and the controlled end of the third switch tube Q5.

3. The PM2.5 detection and color adjustment lighting range hood according to claim 1, characterized in that: The color temperature of the first LED light group is lower than the color temperature of the second LED light group. The higher the PM2.5 concentration is, the higher the ratio of the first current to the second current is.

4. The PM2.5 detection and color adjustment lighting range hood according to claim 1, characterized in that: The PM2.5 concentration detection component includes a light emitter and a light receiver, the light emitter and the light receiver are facing each other and are arranged at an interval, and the control module is connected to the light emitter and the light receiver respectively.

5. The PM2.5 detection and color adjustment lighting range hood according to claim 4, characterized in that: The PM2.5 concentration detection component includes a base shell and a guide fan. The base shell is provided with a guide air duct. The base shell is provided with an air inlet and an air outlet both connected to the guide air duct. The light transmitter, the light receiver and the guide fan are all arranged in the base shell and located in the guide air duct. The guide fan is used to guide the wind to flow from the air inlet into the guide air duct and out from the air outlet.

6. The PM2.5 detection and color adjustment lighting range hood according to claim 5, characterized in that: Along the wind flow direction, the guide fan is located in front of the light transmitter and the light receiver.

7. The PM2.5 detection and color adjustment lighting range hood according to claim 1, characterized in that: It also includes a speed regulating driving module, and the control module is connected to the oil fume fan through the speed regulating driving module to change the speed of the oil fume fan, wherein the higher the PM2.5 concentration, the greater the speed.

8. The PM2.5 detection and color adjustment lighting range hood according to claim 1, characterized in that: The lighting assembly also includes an auxiliary LED light group and a switch module. The control module is connected to the auxiliary LED light group through the switch module to control the auxiliary LED light group to light up or turn off.

9. The PM2.5 detection and color adjustment lighting range hood according to claim 1, characterized in that: The range hood body is also provided with a display screen, and the control module is connected to the display screen to display PM2.5 concentration information.

10. The PM2.5 detection and color adjustment lighting range hood according to claim 1, characterized in that: The operation module includes one or a combination of capacitive touch sensing elements, push buttons, and gesture sensing elements.

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