An air purifier

Abstract

An air purifier includes a main unit, and a motor wind wheel assembly is arranged in the main unit, characterized in that: the main unit can be rotatably arranged on a base, an upper and lower double air duct is arranged in the main unit, the motor wind wheel assembly is a corresponding upper and lower group, the upper air duct and the lower air duct have respective air outlets, a PTC heating element is arranged at the air outlet, air inlet mesh plates are arranged on the left and right sides of the main unit, an air outlet mesh plate is arranged on the front side of the main unit, and a rotating shutter that can guide the air outlet direction is arranged between the air outlet mesh plate and the air outlet. The present invention has a simple and reasonable structure, is convenient and quick to assemble, adopts a double air duct for air outlet, and the air outlet direction is adjustable, is flexible and convenient to use, only needs to adopt low speed operation to achieve the effect of single air duct high speed operation, greatly reduces noise, and has uniform air outlet, effectively improves the user's sleep quality, and has a heating function, which is convenient to use as a heater in cold seasons.

Description

Technical Field

[0001] The invention relates to air purifier technology, and in particular to an air purifier. Background Art

[0002] Air purifiers, also known as "air cleaners", air fresheners, and purifiers, are products that can absorb, decompose or transform various air pollutants (generally including PM2.5, dust, pollen, odor, decoration pollution such as formaldehyde, bacteria, allergens, etc.), effectively improving the cleanliness of the air. With the rapid development of modern industrial technology, air pollution is becoming more and more serious, and more and more families are using air purifiers.

[0003] Air purifiers are mainly composed of motors, fans, air filters and other systems. Traditional air purifiers are mostly single-duct structures. Air enters from the air inlet, is filtered and purified, and blows out from the air outlet. In order to improve the purification efficiency and achieve a good purification effect, the fan often needs to run at high speed, which is bound to cause loud noise, especially at night, which seriously affects people's sleep quality. In addition, most existing air purifiers do not have a heating function. When used in cold winter, they usually need to be equipped with a heater, which not only takes up space, but also increases power consumption.

[0004] After investigation, the existing Chinese patent number CN201721895026.2 "A dual-duct bidirectional air intake air purifier structure" includes a main body, a left air outlet component and a right air outlet component are arranged in the main body, and the left air outlet component and the right air outlet component each include a filter frame, a volute, a motor, and a double-sided wind wheel. The motor is connected to the filter frame, and the double-sided wind wheel is connected to the motor shaft. The volute is connected to the filter frame to form an air duct structure, and the motor and the double-sided wind wheel are located in the chamber in the air duct structure; the air outlet of the air duct structure in the left air outlet component and the right air outlet component is connected to the top opening of the top of the main body; the left air outlet component and the right air outlet component are arranged in parallel; the filter frame setting position of each of the left air outlet component and the right air outlet component corresponds to the corresponding left opening and right opening respectively. The purifier is provided with two air ducts, but there is only one air outlet, which is not conducive to the circulation of the surrounding air after the air is discharged, and the purifier does not have the function of heating.

[0005] In addition, the Chinese patent "An air purifier with heating function" with patent number CN201810972071.6 includes a body, the inner wall of the body is fixedly connected to a partition, the bottom of the partition is provided with a filter device, both sides of the filter device are fixedly connected to the inner wall of the body, and the bottom of the filter device is connected to a gas distributor. The purifier is provided with a filter device, a gas distributor, an air inlet pipe, a base, an induced draft fan, a mixing box, a negative ion generator, an air outlet pipe, a cover plate, a mica sheet and a heating wire, so that the air purifier can not only purify the air, but also heat the room, achieving the effect of having a heating function; however, it is a single air duct structure, which has the defects of high noise and uneven air outlet. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an air purifier with heating that has a reasonable structure, is easy to assemble, has low noise and uniform air output, and can achieve dual air duct air output with adjustable air output direction.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an air purifier, including a main unit, a motor wind wheel assembly is arranged in the main unit, and the characteristic is that: the main unit can be rotatably arranged on a base, an upper and lower double air ducts are arranged in the main unit, the motor wind wheel assembly is divided into two corresponding upper and lower groups, the upper air duct and the lower air duct have respective air outlets, a PTC heating element is arranged at the air outlet, air inlet mesh plates are arranged on the left and right sides of the main unit, an air outlet mesh plate is arranged on the front side of the main unit, and a rotating shutter that can guide the air outlet direction is arranged between the air outlet mesh plate and the air outlet.

[0008] As an improvement, the host is a vertical box structure with openings on the left, right and front ends. Rectangular slots for inserting filters are recessed in the left and right openings of the host. The filters are two rectangular HEPA filters on the left and right. The filters are arranged in the rectangular slots and are fixed to the host through left and right air inlet mesh plates.

[0009] As a further improvement, the upper and lower double air ducts are upper and lower double volute air ducts formed by combining the left half air duct and the right half air duct, and the two groups of motor wind wheel assemblies are respectively arranged in the upper air duct and the lower air duct. The upper air duct and the lower air duct both have left and right two-way air inlets, and the air outlets of the upper air duct and the lower air duct are on the front side. The air outlet mesh plate is arranged at the front opening position of the main engine by snap-fitting.

[0010] Furthermore, a fixed bracket is provided inside the main unit and on the inner side of the air outlet mesh plate, and the upper, lower, left and right edges of the fixed bracket are fixed to the inner wall of the main unit, and air outlet grilles are respectively provided on the front sides of the fixed bracket corresponding to the left and right sides of the main unit, and the fixed bracket is provided with upper and lower air outlets corresponding to the upper and lower double air ducts, and the rotating louvers are divided into two groups of upper and lower groups corresponding to the air outlets, and each group of rotating louvers is symmetrical with two left and right louvers, and a synchronous motor for driving the rotating louvers to rotate is provided in the middle of the fixed bracket, and the rotating louvers are connected to the synchronous motor through a transmission mechanism, and when the left and right rotating louvers are rotated to a closed state, the two rotating louvers are parallel to block the front of the air outlet, and air is discharged from both sides at this time, and when the left and right rotating louvers are rotated to 90°, the two rotating louvers are vertically located on the left and right sides of the air outlet, and air is discharged forward at this time.

[0011] Furthermore, the synchronous motor is installed in the middle part of the fixed bracket between the upper and lower air outlets, and the fixed bracket is provided with mounting plates for installing rotating louvers on the upper and lower sides of the upper and lower air outlets. The upper and lower groups of rotating louvers are rotatably set on the axial hole of the mounting plate at one end away from the synchronous motor, and the other end is connected to the transmission mechanism through the guide port of the other mounting plate.

[0012] Furthermore, the rotating shutter is formed by connecting blades and an L-shaped shaft, wherein the blades are fixed on the longitudinal long axis of the L-shaped shaft, and the end of the longitudinal long axis of the L-shaped shaft is the end away from the synchronous motor. The transmission mechanism includes an active transmission gear, a passive transmission gear and two left and right transmission shafts, wherein the active transmission gear is connected to the output shaft of the synchronous motor, and the passive transmission gear is meshed with the active transmission gear, and the upper and lower ends of the transmission shaft are respectively connected to the ends of the lateral short axes of the L-shaped shafts of the upper and lower rotating shutters on the same side, and a waist-shaped hole is longitudinally opened in the middle of the transmission shaft, and a convex shaft is provided at the front end of the active transmission gear and the passive transmission gear to cooperate with the waist-shaped hole of the corresponding transmission shaft. The active transmission gear and the passive transmission gear are driven to rotate through the positive and negative rotation of the synchronous motor, thereby realizing the rotation of the L-shaped shaft, and then controlling the opening and closing angle of the rotating shutter.

[0013] Furthermore, two micro switches are installed on the fixed bracket to enable the rotating shutter to rotate to a 90° vertical state and stop rotating when it reaches a 180° closed state.

[0014] Furthermore, a humidifying mechanism is also provided in the host, the humidifying mechanism includes a water tank and humidifying cotton, the humidifying mechanism is arranged at a position near the left side of the bottom of the host, and a temperature and humidity sensor and an overheating protection switch are provided in the host.

[0015] Furthermore, the base is a disc-shaped oscillating base, the main machine is mounted on the base so as to be rotatable left and right, and a synchronous motor is arranged in the base so as to drive the main machine to rotate left and right.

[0016] Finally, a top cover is provided at the upper end of the host, a display screen is provided on the top cover, a power board, a touch panel, a remote control receiving circuit and a photosensitive element are provided inside the host and below the display screen, and a portable part is recessed on the left and right sides of the upper end of the host for easy carrying.

[0017] Compared with the prior art, the advantages of the present invention are: the main unit is provided with upper and lower double air ducts, and the double air duct outlet not only makes the air outlet uniform but also greatly reduces the noise; a heating element is arranged at the air outlet to heat the air outlet to play a heating role; a rotating louver that can guide the air outlet direction is also arranged outside the air outlet, and the rotating louver is controlled by a synchronous motor to rotate, so that the air outlet can be selected to be discharged forward or to both sides; the base adopts a shaking base, so that the machine can shake its head at a wide angle when in use, which is conducive to the full circulation of the surrounding air; the air inlet mesh plate is arranged on the main unit by a snap-on method, which is convenient for disassembly and assembly, and is convenient for the replacement and cleaning of the filter; the top cover is also fixed by a snap-on method, which is convenient for replacing the power board and daily maintenance. The present invention has a simple and reasonable structure, is easy and quick to assemble, adopts a double air duct outlet, and the air outlet direction is adjustable, and it is flexible and convenient to use. It only needs to operate at a low speed to achieve the effect of single air duct high speed operation, which greatly reduces the noise, and the air outlet is uniform, which effectively improves the user's sleep quality. At the same time, it has a heating function, which is convenient for use as a heater in cold seasons. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural decomposition diagram of an embodiment of the present invention;

[0019] Figure 2a-2b FIG. 1 is a working principle diagram of the rotary shutter of an embodiment of the present invention, wherein Figure 2a This is a working diagram of the rotating shutter rotating to 180° and closing to let air out from both sides. Figure 2b This is a schematic diagram of the working state of the rotating louver rotating to 90° and discharging air forward;

[0020] Figure 3 It is a longitudinal cross-sectional view of the present invention along the left-right direction;

[0021] Figure 4 It is a structural schematic diagram of the fixed bracket;

[0022] Figure 5 for Figure 4 Exploded diagram of

[0023] Figure 6 for Figure 5 Side view of

[0024] Figure 7 for Figure 3 Exploded diagram of

[0025] Figure 8 A longitudinal cross-sectional view of the present invention along the front-rear direction;

[0026] Fig. 9 This is a schematic diagram of the structure of the water tank and humidifying cotton. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 9 As shown, an air purifier includes a host 1 and a base 30. The host 1 can be rotatably arranged on the base 30. A motor wind wheel assembly 2, a filter 3 and a humidifying mechanism are arranged in the host 1. An upper and lower double air duct 10 is arranged in the host 1. The motor wind wheel assembly 2 is divided into two corresponding upper and lower groups. The upper air duct and the lower air duct have respective air outlets 40. A PTC heating element 5 is arranged at the air outlet 40. Air inlet mesh plates 11 are arranged on the left and right sides of the host 1. An air outlet mesh plate 12 is arranged on the front side of the host. A rotating shutter 6 for guiding the air outlet direction is arranged between the air outlet mesh plate 12 and the air outlet 40.

[0029] The specific structure is as follows: the host 1 is a vertical box structure with left and right openings and a front end. A rectangular slot 16 for inserting the filter 3 is recessed at the left and right openings of the host 1. The filter 3 is a left and right rectangular HEPA filter. The filter 3 is arranged in the rectangular slot 16 and is fixed to the host 1 by the left and right air inlet mesh plates 11. The upper and lower double air ducts 10 are upper and lower double volute air ducts formed by the left half air duct 101 and the right half air duct 102. Two groups of motor wind wheel assemblies 2 are respectively arranged in the upper air duct and the lower air duct. Both the upper air duct and the lower air duct have left and right two-way air inlets. The air outlets 40 of the upper air duct and the lower air duct are on the front side. The air outlet mesh plates 12 are arranged at the front opening of the host 1 by means of a snap connection. A fixed bracket 4 is provided inside the main unit 1 and inside the air outlet mesh plate 12. The upper, lower, left and right edges of the fixed bracket 4 are fixed against the inner wall of the main unit 1. Air outlet grilles 14 are provided on the left and right sides of the main unit 1 corresponding to the front side of the fixed bracket 4. The fixed bracket 4 is provided with two upper and lower air outlets 40 corresponding to the upper and lower double air ducts. The rotating shutters 6 are provided in two upper and lower groups corresponding to the air outlets 40. Each group of rotating shutters 6 is symmetrical on the left and right. A synchronous motor 8 for driving the rotating shutters 6 to rotate is provided in the middle of the fixed bracket 4. The rotating shutters 6 are connected to the synchronous motor 8 through a transmission mechanism 9. The synchronous motor 8 is installed in the middle of the fixed bracket 4 between the upper and lower air outlets 40. A mounting plate 41 for installing the rotating shutters 6 is provided on the upper and lower sides of the upper and lower air outlets 40 on the fixed bracket 4. The rotating shutter 6 is assembled by blades 61 and an L-shaped rotating shaft 62, wherein the blades 61 are fixed on the longitudinal long axis of the L-shaped rotating shaft 62, and the end of the longitudinal long axis of the L-shaped rotating shaft 62 is the end away from the synchronous motor 8, which is rotatably set on the shaft hole of the corresponding mounting plate 41, and the other end passes through the guide port of the other mounting plate 41 and is connected to the transmission mechanism 9. The transmission mechanism 9 includes an active transmission gear 91, a passive transmission gear 92 and two left and right transmission shafts 93, wherein the active transmission gear 91 is connected to the output shaft of the synchronous motor 8, and the passive transmission gear 92 is meshed with the active transmission gear 91. The upper and lower ends of the transmission shaft 93 are respectively connected to the ends of the transverse short axes of the L-shaped rotating shafts 62 of the upper and lower rotating shutters 6 on the same side. A waist-shaped hole is longitudinally opened in the middle of the transmission shaft 93, and the front ends of the active transmission gear 91 and the passive transmission gear 92 are provided with convex shafts 911 and 921 inserted in the corresponding waist-shaped holes of the transmission shaft 93. The active transmission gear 91 and the passive transmission gear 92 are driven to rotate by the forward and reverse rotation of the synchronous motor 8, thereby realizing the rotation of the L-shaped rotating shaft 62, thereby controlling the opening and closing angles of the rotating shutters 6.When the left and right rotating shutters 6 rotate to a 180° closed state, the two rotating shutters 6 are parallel to block the front of the air outlet 40, and air is discharged from both sides. When the left and right rotating shutters 6 rotate to 90°, the two rotating shutters 6 are vertically located on the left and right sides of the air outlet 40, and air is discharged forward. Two micro switches 42 are also installed on the fixed bracket 4. The micro switches 42 are respectively located on the left and front sides of the fixed bracket 4, and cooperate with the rotating shutters 6 to stop the rotating shutters 6 when they rotate to a 90° vertical state and a 180° closed state.

[0030] The humidification mechanism includes a water tank 7 and a humidification cotton 70. The humidification mechanism is arranged at the bottom of the main unit 1 near the left side. A temperature and humidity sensor and an overheat protection switch are arranged in the main unit 1. The base 30 is a disc-shaped oscillating base. The main unit 1 can be mounted on the base 30 so as to rotate left and right. A synchronous motor is arranged in the base 30 to drive the main unit 1 to rotate left and right. The oscillating principle of the base 30 is consistent with the prior art and will not be described in detail here.

[0031] In addition, a top cover 13 is provided at the upper end of the host 1, and a display screen is provided on the top cover 13. A power board, a touch panel, a remote control receiving circuit and a photosensitive element are provided inside the host 1 and below the display screen. A hand-held portion 15 for easy carrying is recessed on the left and right sides of the upper end of the host 1.

[0032] When in use, the motor wind wheel assembly 2 is turned on and runs, and air enters from the air inlet screens 11 on the left and right sides, is filtered by the filter 3, and is discharged from the air outlet 40. The micro switch 42 is turned on and off to give a control signal, so that the rotating shutter 6 stops rotating at 180° or 90°. When the rotating shutter 6 rotates to the 180° closed state, the two rotating shutters 6 are parallel to block the front of the air outlet 40. At this time, the air is discharged from both sides, and the air is discharged from the air outlet grilles 14 on the left and right sides of the main unit. Figure 2a When the left and right two rotating shutters 6 are rotated to 90 °, the two rotating shutters 6 are vertically located on the left and right sides of the air outlet 40, and the wind is discharged forward at this time, and the wind is discharged from the air outlet mesh plate 12, such as Figure 2b As shown, the air inlet and outlet are shown by the arrows in the figure; in addition, when heating is needed, the PTC heating element 5 works to blow out warm air and is used as a heater; the host 1 can be selected to shake its head left or right or not according to needs.

[0033] Because it has dual air ducts and uniform air output, it only needs to run at a low speed to achieve the effect of single-duct high-speed operation, which greatly reduces noise and improves the user's sleep quality. The air outlet direction is adjustable, making it flexible and convenient to use. It also has a heating function, making it convenient to use as a heater in cold seasons.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An air purifier, comprising a main unit, wherein a motor and a wind wheel assembly are provided in the main unit, characterized in that: The main unit is rotatably arranged on the base, and an upper and lower double air duct is arranged in the main unit, and the motor wind wheel assembly is a corresponding upper and lower group, and the upper air duct and the lower air duct have respective air outlets, and a PTC heating element is arranged at the air outlet, and air inlet mesh plates are arranged on the left and right sides of the main unit, and an air outlet mesh plate is arranged on the front side of the main unit, and a rotating shutter that can guide the air outlet direction is arranged between the air outlet mesh plate and the air outlet; The host is a vertical box structure with left and right openings and a front end. Rectangular slots for inserting filters are recessed at the left and right openings of the host. The filters are two left and right HEPA filters. The filters are arranged in the rectangular slots and are fixed to the host through left and right air inlet mesh plates. The upper and lower double air ducts are upper and lower double volute air ducts formed by combining the left half air duct and the right half air duct. Two sets of motor wind wheel assemblies are respectively arranged in the upper air duct and the lower air duct. The upper air duct and the lower air duct both have left and right two-way air inlets. The air outlets of the upper air duct and the lower air duct are on the front side. The air outlet mesh plate is arranged at the front opening of the main machine by a snap-on method. A fixed bracket is provided inside the main unit and on the inner side of the air outlet mesh plate, and the upper, lower, left and right edges of the fixed bracket are fixed against the inner wall of the main unit, and air outlet grilles are respectively provided on the front sides of the fixed brackets corresponding to the left and right sides of the main unit, and two upper and lower air outlets corresponding to the upper and lower double air ducts are provided on the fixed bracket, and the rotating shutters are divided into two groups corresponding to the air outlets, and each group of rotating shutters is divided into two groups on the left and right, and a synchronous motor for driving the rotating shutters to rotate is provided in the middle of the fixed bracket, and the rotating shutters are connected to the synchronous motor through a transmission mechanism, and when the left and right rotating shutters are rotated to a closed state, the two rotating shutters are parallel to block the front of the air outlet, and air is discharged from both sides at this time, and when the left and right rotating shutters are rotated to 90 degrees, the two rotating shutters are vertically located on the left and right sides of the air outlet, and air is discharged forward at this time; The synchronous motor is installed in the middle of the fixed bracket between the upper and lower air outlets. The fixed bracket is provided with mounting plates for the installation of rotating shutters on the upper and lower sides of the upper and lower air outlets. One end of the upper and lower groups of rotating shutters away from the synchronous motor is rotatably arranged on the shaft hole of the mounting plate, and the other end passes through the guide opening of the other mounting plate to be connected with the transmission mechanism. The rotating shutter is formed by connecting blades and an L-shaped shaft, wherein the blades are fixed on the longitudinal long axis of the L-shaped shaft, and the end of the longitudinal long axis of the L-shaped shaft is the end away from the synchronous motor. The transmission mechanism includes an active transmission gear, a passive transmission gear and two left and right transmission shafts, wherein the active transmission gear is connected to the output shaft of the synchronous motor, and the passive transmission gear is meshed with the active transmission gear. The upper and lower ends of the transmission shaft are respectively connected to the ends of the transverse short axes of the L-shaped shafts of the upper and lower rotating shutters on the same side. A waist-shaped hole is longitudinally opened in the middle of the transmission shaft, and a convex shaft is provided at the front end of the active transmission gear and the passive transmission gear to cooperate with the waist-shaped hole of the corresponding transmission shaft. The active transmission gear and the passive transmission gear are driven to rotate through the positive and negative rotation of the synchronous motor, thereby realizing the rotation of the L-shaped shaft, thereby controlling the opening and closing angle of the rotating shutter.

2. The air purifier according to claim 1, characterized in that: The filter is a rectangular HEPA filter.

3. The air purifier according to claim 1, characterized in that: Each group of rotating shutters is composed of two symmetrical left and right shutters.

4. The air purifier according to claim 1, characterized in that: The fixing bracket is also provided with two micro switches which can make the rotating shutter rotate to a 90° vertical state and stop rotating when the rotating shutter rotates to a 180° closed state.

5. The air purifier according to any one of claims 1 to 4, characterized in that: The host is also provided with a humidifying mechanism, which includes a water tank and humidifying cotton. The humidifying mechanism is arranged at a position near the left side of the bottom of the host. The host is provided with a temperature and humidity sensor and an overheat protection switch.

6. The air purifier according to any one of claims 1 to 4, characterized in that: The base is a disc-shaped oscillating base, and the main machine is installed on the base so as to be rotatable left and right. A synchronous motor is arranged in the base so as to drive the main machine to rotate left and right.

7. The air purifier according to any one of claims 1 to 4, characterized in that: The upper end of the host is provided with a top cover, on which a display screen is provided, and inside the host and below the display screen are provided with a power board, a touch panel, a remote control receiving circuit and a photosensitive element, and left and right sides of the upper end of the host are recessed with a portable part for easy carrying.

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