CN214841440U

CN214841440U - Air purifier

Info

Publication number: CN214841440U
Application number: CN202023176671.3U
Authority: CN
Inventors: 刘峰; 薛富强; 祁衡
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-11-23
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses an air purifier, which comprises a motor, fan blades, an air purification bag and a power supply, wherein the fan blades are connected with an output shaft of the motor; the purifier also comprises an air detection sensor for detecting the air quality; the main control board is provided with a first comparator circuit, the first input end of the first comparator circuit is electrically connected with the air detection sensor, and the second input end of the first comparator circuit is preset with a first reference threshold value; the output end of the main control board is electrically connected with the motor, and the motor intermittently drives the fan blades to rotate through the first comparator circuit. The utility model provides a technical scheme can make motor pause work under the qualified circumstances of air quality detecting, reduces the clarifier energy consumption, the single back live time that charges of extension battery.

Description

Air purifier

Technical Field

The utility model relates to an air purifier field, in particular to air purifier.

Background

Since the 21 st century, the control and treatment of environmental pollution is a major issue facing and urgently to be solved in human society. In particular, in recent years, environmental awareness has been extended from outside the chamber to inside the chamber. The survey shows that: the pollution degree of indoor air is more than ten to one hundred times more serious than that of outdoor air. Volatile organic chemicals released into a room from gasoline, building materials, furniture, cigarettes, electric appliances and the like are more than three hundred, wherein the volatile organic chemicals comprise high-risk and high-toxicity gases such as formaldehyde, benzene series, ammonia, carbon monoxide, dichloroethylene, nitrogen dioxide and the like. The chemical substances can cause dysfunction of the central nervous system, the respiratory system, the reproductive system, the circulatory system and the immune system of human beings and animals, cause headache, dry throat and dermatitis, and even cause diseases such as leukemia, cancer and the like which are difficult to cure after long-term inhalation.

Indoor air can be purified by natural ventilation, window opening ventilation or installation of an exhaust fan is adopted, indoor polluted air is replaced by fresh air, the indoor air purification device is suitable for occasions with light pollution but not suitable for occasions with pollution above a moderate degree, and the natural purification effect depends on the cleanness degree of the outdoor environment. Nowadays, various indoor air evolutioners are in endless range, but generally have large volume and are powered by 220V commercial power, so that the arrangement position of the purifier cannot be flexibly adjusted.

Along with the development of battery technology, some wireless purifiers also appear in the prior art, but the energy consumption is higher and leads to the clarifier dead time after the single charges, can't satisfy people's user demand well.

Therefore, there is a need for an air purifier that can solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of the prior art, the utility model provides an air purifier, under the prerequisite of guaranteeing purifying effect, reduces the energy consumption, and the extension single live time after charging, technical scheme is as follows:

the utility model provides an air purifier, which comprises a motor, fan blades, an air purification bag and a power supply, wherein the fan blades are connected with an output shaft of the motor; the purifier also comprises an air detection sensor for detecting the air quality;

the main control board is provided with a first comparator circuit, the first input end of the first comparator circuit is electrically connected with the air detection sensor, and the second input end of the first comparator circuit is preset with a first reference threshold value; the output end of the main control board is electrically connected with the motor, and the motor intermittently drives the fan blades to rotate through the first comparator circuit.

Further, the air purifier further comprises a voltage detection unit and/or a current detection unit, wherein the voltage detection unit is used for detecting the output voltage of the power supply, and the current detection unit is used for detecting the output current of the power supply;

the air purifier further comprises a prompting device electrically connected with the output end of the main control board, the main control board is further provided with a second comparator circuit, the first input end of the second comparator circuit is electrically connected with the voltage detection unit or the current detection unit, a second reference threshold value is preset at the second input end of the second comparator circuit, and the prompting device sends a prompting signal when the output voltage or the output current is lower than the second reference threshold value through the second comparator circuit.

Furthermore, the power supply is a battery, and the battery supplies power to the air detection sensor and/or the prompting device through a power supply module of the main control board.

Further, air purifier still includes middle plate, motor and flabellum setting are in the front side of middle plate, air purification package sets up the rear side of middle plate, be equipped with on the middle plate with the relative ventilation hole that sets up of air purification package.

Further, air purifier still includes portable portion, protecgulum and hou gai, portable portion sets up middle plate upper portion, the protecgulum lock is in the front side of middle plate, the back lid lock is in the rear side of middle plate, all be equipped with the ventilation hole on protecgulum and the back lid.

Furthermore, a master control switch is further arranged on the main control board and used for switching the on-off state between the power supply and the main control board.

Further, air purifier still includes the casing and sets up middle plate in the casing, the main control board sets up the side of middle plate, be equipped with the button rather than matching on the switch of always controlling, be equipped with on air purifier's the casing with the opening that button and/or empty gas detection survey sensor correspond.

Furthermore, the power supply is a storage battery, a battery compartment for accommodating the storage battery is arranged on the middle plate, and the battery compartment is connected with the main control board through a lead.

Further, the prompting device is an LED and/or a buzzer, and the prompting device is arranged on the main control board.

Further, the air detection sensor is a formaldehyde detection sensor, and the air purification component contains a formaldehyde adsorbent.

The utility model provides a beneficial effect that technical scheme brought as follows:

1) the air purifier has small volume, is convenient to carry and can be used wirelessly;

2) the air purifier has the function of discontinuous cycle work, can pause the work of the motor under the condition of detecting that the air quality is qualified, prolongs the service time of the battery after single charging and reduces the energy consumption of the purifier;

3) this air purifier has battery low-voltage detection function, can be when battery voltage is less than preset value, in time indicate the user to change the battery.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an internal structure view of an air purifier provided by an embodiment of the present invention;

fig. 2 is a perspective view of an air purifier provided by an embodiment of the present invention;

fig. 3 is a circuit diagram of an air purifier provided by an embodiment of the present invention;

fig. 4 is a flow chart of a method of using the air purifier provided by the embodiment of the invention;

fig. 5 is a circuit diagram of a first comparator when the air purifier provided by the embodiment of the present invention is in use;

fig. 6 is a connection circuit diagram of a second comparator when the air purifier provided by the embodiment of the present invention is in use.

Wherein the reference numerals include: 1-motor, 2-fan blade, 3-air purification bag, 4-power supply, 41-battery compartment cover plate, 5-air detection sensor, 6-main control board, 61-main control switch, 62-button, 7-prompting device, 8-middle plate, 91-hand-held part, 92-front cover and 93-rear cover.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In an embodiment of the present invention, an air purifier is provided, as shown in fig. 1 to 3, comprising a motor 1, a fan blade 2, an air purifying bag 3, a power source 4, an air detecting sensor 5, a main control board 6, a housing, and a middle plate 8. The fan blades 2 are connected with an output shaft of the motor 1, and the fan blades 2 are driven by the motor 1 to rotate so as to guide airflow to the air purification bag 3; the middle plate 8 is arranged in the shell, the motor 1 and the fan blades 2 are arranged on the front side of the middle plate 8, the air purification bag 3 is arranged on the rear side of the middle plate 8, and the middle plate 8 is provided with a ventilation hole opposite to the air purification bag 3; the air detection sensor 5 is used for detecting air quality; the power supply 4 is used for supplying power to the motor 1, and specifically, the power supply 4 supplies power to the air detection sensor 5 and the motor 1 through a power supply module of the main control board 6; the output of main control board 6 with motor 1 electricity is connected, and the air purifier of this embodiment can be under the qualified circumstances of air quality, and the operating condition of suspension motor 1 detects air quality and rotates with drive flabellum 2 when not meeting the requirements automatic start motor 1, and above realizes through the circuit, specifically as follows:

as shown in fig. 4 to 5, the main control board 6 has a first comparator circuit, a first input terminal of which is electrically connected to the air detection sensor 5, and a second input terminal of which is preset with a first reference threshold. The first comparator circuit is used for realizing that the motor 1 intermittently drives the fan blade 2 to rotate.

It should be noted that there are two cases to be considered here:

in the first case (as shown in fig. 5), if the air detection sensor 5 detects a decrease in value as the air quality improves, the air detection sensor 5 is connected to the non-inverting input terminal of the first comparator, the inverting input terminal of the first comparator is connected to the first reference threshold, when the air quality of the environment where the air purifier is located is poor, the value detected by the air detection sensor 5 is higher than the first reference threshold, the first comparator outputs 1, the working state control unit of the main control board 6 starts to drive the motor 1 to work through the motor driver, and the fan blades 2 rotate under the driving of the motor 1 to guide the airflow to the air purification packet 3 to start to work to purify the air; when the air purifier is in good environment and does not need to be purified, the numerical value detected by the air detection sensor 5 is lower than a first reference threshold value, the first comparator outputs 0, the motor 1 stops working, and then the fan blades 2 stop rotating; the air detecting sensor 5 may be a formaldehyde detecting sensor, or may be another toxic substance detecting sensor, and in addition, the air purifying bag 3 includes a formaldehyde adsorbent, but is not limited thereto.

In the second situation (not shown), the air detection sensor 5 detects an increase in value as the air quality improves, the air detection sensor 5 is connected to the inverting input terminal of the first comparator, the non-inverting input terminal of the first comparator is connected to the first reference threshold, when the air quality of the environment where the air purifier is located is poor, the value detected by the air detection sensor 5 is lower than the first reference threshold, the first comparator outputs 1, the working state control unit of the main control board 6 starts to drive the motor 1 to work through the motor driver, and the fan blades 2 rotate under the driving of the motor 1 to guide the airflow to the air purification packet 3, so as to achieve the purpose of air purification; when air purifier located ambient air quality is good and need not to purify, the numerical value that air detection sensor 5 detected is higher than first benchmark threshold value, and first comparator output 0, motor 1 stop work, and then flabellum 2 stall.

In an embodiment of the present invention, the air purifier is a wireless purifier, that is, the power source 4 is a battery, and the air purifier further includes a voltage detection unit and/or a current detection unit, and a prompt device 7; the voltage detection unit is used for detecting the output voltage of the battery, and the current detection unit is used for detecting the output current of the battery; the prompting device 7 can be arranged on the main control board 6 and electrically connected with the output end of the main control board 6; when the output voltage and/or the output current of the battery are/is detected to be lower than a certain value, it is indicated that the battery needs to be replaced or charged, at this time, the prompting device 7 can be driven to work, and the above is realized through a circuit, which is specifically as follows:

as shown in fig. 4 and 6, the main control board 6 further has a second comparator circuit, a first input end of the second comparator circuit is electrically connected to the voltage detection unit or the current detection unit, a second reference threshold is preset at a second input end of the second comparator circuit, and the prompting device 7 is implemented by the second comparator circuit to send a prompting signal when the output voltage or the output current is lower than the second reference threshold. Taking voltage as an example, the air purifier realizes the battery low-voltage detection function by the following modes: the voltage detection unit is connected with the inverting input end of a second comparator, the non-inverting input end of the second comparator is connected with a second reference threshold value, when the voltage of the power supply 4 detected by the voltage detection unit is higher than the second reference threshold value, the second comparator outputs 0, and the prompting device 7 does not work; when the voltage of the power supply 4 detected by the voltage detection unit is lower than the second reference threshold, the second comparator outputs 1, and the working state control unit of the main control board 6 drives the prompting device 7 to work through the state display driver. The prompting device 7 may be an LED, a buzzer, or a combination of the two, but is not limited to the LED or the buzzer, and here, the LED is taken as an example: when suggestion device 7 got into operating condition, correspondingly, the LED lamp was bright, in time reminds the user to need look over or change power 4 to normal use this air purifier.

It should be stated that the power source 4 may be a dry battery or a storage battery, a battery compartment for accommodating the storage battery is provided on the middle plate 8, and a battery compartment cover plate 41 serving as a compartment door may also be provided, as shown in fig. 1, the battery compartment is connected with the main control board 6 through a wire; in addition, the second reference threshold in the voltage example mentioned above is the voltage when the air purifier normally works, and it is not limited to a certain fixed value, and can be flexibly set according to the requirement.

As shown in fig. 1, the main control board 6 is disposed on a side surface of the middle board 8, in addition, a main control switch 61 is further disposed on the main control board 6, the main control switch 61 is used for switching on/off states between the power supply 4 and the main control board 6, a button 62 matched with the main control switch 61 is further disposed on the main control switch 61, and an opening corresponding to the button 62 and/or the air detection sensor 5 is disposed on a housing of the air purifier; the shell of the purifier comprises a front cover 92 and a rear cover 93, wherein the front cover 92 is buckled on the front side of the middle plate 8, the rear cover 93 is buckled on the rear side of the middle plate 8, the front cover 92 and the rear cover 93 are both provided with vent holes, and the upper part of the middle plate 8 is also provided with a hand-held part 91, so that the structure is compact, the size is small, and the carrying is convenient.

Furthermore, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air purifier is characterized by comprising a motor (1), fan blades (2), an air purification bag (3) and a power supply (4), wherein the fan blades (2) are connected with an output shaft of the motor (1), the power supply (4) is used for supplying power to the motor (1), and the fan blades (2) are driven by the motor (1) to rotate so as to guide air flow to the air purification bag (3); the purifier further comprises:

an air detection sensor (5) for detecting air quality;

the main control board (6) is provided with a first comparator circuit, the first input end of the first comparator circuit is electrically connected with the air detection sensor (5), and the second input end of the first comparator circuit is preset with a first reference threshold value; the output end of the main control board (6) is electrically connected with the motor (1), and the motor (1) intermittently drives the fan blades (2) to rotate through the first comparator circuit.

2. The air purifier according to claim 1, further comprising a voltage detection unit for detecting an output voltage of the power supply (4) and/or a current detection unit for detecting an output current of the power supply (4);

the air purifier further comprises a prompting device (7) electrically connected with the output end of the main control board (6), the main control board (6) is further provided with a second comparator circuit, a first input end of the second comparator circuit is electrically connected with the voltage detection unit or the current detection unit, a second reference threshold value is preset at a second input end of the second comparator circuit, and the prompting device (7) sends a prompting signal aiming at the state that the output voltage or the output current is lower than the second reference threshold value through the second comparator circuit.

3. Air purifier according to claim 2, characterized in that the power source (4) is a battery which supplies power to the air detection sensor (5) and/or the prompting device (7) through a power supply module of a main control board (6).

4. The air purifier as claimed in claim 1, further comprising a middle plate (8), wherein the motor (1) and the fan blades (2) are disposed at a front side of the middle plate (8), the air purifying bag (3) is disposed at a rear side of the middle plate (8), and the middle plate (8) is provided with a vent hole disposed opposite to the air purifying bag (3).

5. The air cleaner according to claim 4, further comprising a carrying portion (91), a front cover (92), and a rear cover (93), wherein the carrying portion (91) is disposed on an upper portion of the middle plate (8), the front cover (92) is fastened to a front side of the middle plate (8), the rear cover (93) is fastened to a rear side of the middle plate (8), and the front cover (92) and the rear cover (93) are provided with ventilation holes.

6. The air purifier as claimed in claim 1, wherein the main control board (6) is further provided with a master switch (61), and the master switch (61) is used for switching the on-off state between the power supply (4) and the main control board (6).

7. The air purifier as claimed in claim 6, further comprising a housing and a middle plate (8) disposed in the housing, wherein the main control board (6) is disposed on a side surface of the middle plate (8), the main control switch (61) is provided with a button (62) matched with the main control board, and the housing of the air purifier is provided with an opening corresponding to the button (62) and/or the air detection sensor (5).

8. The air purifier as claimed in claim 4, wherein the power source (4) is a storage battery, a battery compartment for accommodating the storage battery is arranged on the middle plate (8), and the battery compartment is connected with the main control board (6) through a wire.

9. The air purifier according to claim 2, wherein the prompting device (7) is an LED and/or a buzzer, and the prompting device (7) is arranged on the main control board (6).

10. The air cleaner according to any one of claims 1-9, wherein the air detection sensor (5) is a formaldehyde detection sensor, and the air cleaning pack (3) contains a formaldehyde adsorbent.