An air purifier

Abstract

The present invention provides an air purifier, comprising: a shell, in which a accommodating cavity is arranged; a base, which is arranged in the accommodating cavity and fixed relative to the accommodating cavity; a lifting track, which is arranged on the base; a heating device, which is movably arranged on the lifting track; a filter, which is arranged at a downstream position of the heating device along the flow direction of the airflow, and the heating device is suitable for moving closer to or away from the filter. In the present invention, the heating device can be moved closer to or away from the filter by controlling the heating device to perform lifting action relative to the lifting track. When the temperature of the filter is lower than the preset temperature, the heating device is controlled to be close to the filter, and the temperature of the center of the filter is subjected to more heat radiation, thereby achieving a temperature increase.

Description

Technical Field

[0001] The present invention relates to the technical field of air purifiers, and in particular to a heating module of an air purifier. Background Art

[0002] Air purifiers are common household appliances in people's daily lives. Air purifiers usually have multiple different modules, and different functions are achieved through the operation of different modules.

[0003] Air purifiers in the prior art are usually provided with a heating unit and a filter. Bacteria or viruses in the air will be adsorbed on the filter. At this time, the heating unit starts to heat the filter at a high temperature, thereby killing the bacteria or viruses on the filter.

[0004] However, after testing, technicians found that the filter in the existing technology still has the problem of incomplete sterilization. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of thorough sterilization of air purifiers in the prior art.

[0006] To this end, the present invention provides an air purifier, comprising: a shell having an accommodating cavity disposed therein; a base disposed in the accommodating cavity and fixed relative to the accommodating cavity; a lifting track disposed on the base; a heating device movably disposed on the lifting track; a filter disposed at a downstream position of the heating device along the flow direction of the airflow, and the heating device is suitable for moving closer to or away from the filter.

[0007] The air purifier provided by the present invention further includes: a driving device, which acts on the heating device and is suitable for driving the heating device to move relative to the filter.

[0008] The air purifier provided by the present invention, the driving device comprises: a driving motor; a transmission mechanism, one end of which acts on the output end of the driving motor and the other end of which acts on the filter.

[0009] In the air purifier provided by the present invention, the transmission mechanism is a chain, a rotating wheel is provided on the lifting track, and the chain is respectively connected to the driving motor and the heating device through the rotating wheel.

[0010] In the air purifier provided by the present invention, the rotating wheel is arranged on the top of the lifting track.

[0011] In the air purifier provided by the present invention, the lifting track is provided with a guide groove extending in the longitudinal direction, and guide members suitable for being embedded in the guide groove are provided at both ends of the heating device.

[0012] The air purifier provided by the present invention further includes a temperature sensor, which is connected to the lifting track and located between the filter and the heating device. The temperature sensor is communicatively connected to the driving motor.

[0013] In the air purifier provided by the present invention, a connecting rod is arranged on the lifting track, and the temperature sensor is arranged on the connecting rod and deviated from the center of the filter.

[0014] The air purifier provided by the present invention also includes a fan, which is arranged in the accommodating cavity and is located on a side of the filter that is different from the heating device.

[0015] The air purifier provided by the present invention, the heating device comprises: a heating element; and a plurality of heat sinks, which are arranged on the heating element and are suitable for conducting the heat generated by the heating element.

[0016] The technical solution of the present invention has the following advantages:

[0017] 1. The air purifier provided by the present invention comprises: a shell having an accommodating cavity arranged inside; a base arranged in the accommodating cavity and fixed relative to the accommodating cavity; a lifting track arranged on the base; a heating device movably arranged on the lifting track; a filter screen arranged at a downstream position of the heating device along the flow direction of the airflow, and the heating device is suitable for moving closer to or away from the filter screen.

[0018] Through analysis, technicians have found that the main reason why the filter in the prior art cannot achieve a sufficient sterilization effect is the uneven temperature distribution of the filter itself. The wind in the accommodating cavity has a certain distribution pattern. Generally speaking, the wind speed acting on the middle of the filter is faster, and the wind speed acting on the filter away from the middle is slower. The above wind speed distribution will cause more heat to be taken away from the middle of the filter, which will cause the temperature in the middle of the filter to be lower than the temperature of the filter away from the middle of the filter, which will lead to poor sterilization effect in the middle of the filter.

[0019] In the present invention, by controlling the heating device to move up and down relative to the lifting track, the heating device can be moved closer to or farther from the filter. When the temperature of the filter is lower than the preset temperature, the heating device is controlled to move closer to the filter, and the temperature of the center of the filter is subjected to more heat radiation, thereby increasing the temperature.

[0020] 2. In the air purifier provided by the present invention, the driving device comprises: a driving motor; a transmission mechanism, one end of which acts on the output end of the driving motor and the other end of which acts on the filter. The combination of the driving motor and the transmission mechanism can realize automatic control of the heating device.

[0021] 3. In the air purifier provided by the present invention, the transmission mechanism is a chain, a rotating wheel is provided on the lifting track, and the chain is respectively connected to the driving motor and the heating device through the rotating wheel.

[0022] By providing a rotating wheel, the smoothness of the chain during movement can be improved, thereby preventing the heating device from getting stuck during movement.

[0023] 4. In the air purifier provided by the present invention, a guide groove extending in the longitudinal direction is provided on the lifting track, and guide members suitable for embedding in the guide groove are provided at both ends of the heating device.

[0024] The cooperation between the guide groove and the guide piece can ensure that the heating device can be stably raised and lowered in the height direction, thereby preventing the heating device from shaking, which in turn affects the heating effect on the filter.

[0025] 5. The air purifier provided by the present invention further includes a temperature sensor, which is connected to the lifting track and located between the filter and the heating device, and the temperature sensor is communicatively connected to the driving motor.

[0026] The temperature of the filter is sensed by a temperature sensor, and the heating device can be controlled to rise to heat the filter, or to fall to cool the filter, thereby realizing automatic sterilization of the filter.

[0027] 6. In the air purifier provided by the present invention, a connecting rod is provided on the lifting track, and the temperature sensor is arranged on the connecting rod and deviated from the center of the filter.

[0028] By setting a connecting rod, the temperature sensor can act on a part deviated from the center of the filter. Since the temperature of the part deviated from the center of the filter is higher than the temperature of the center of the filter, when the temperature sensor detects that the temperature exceeds the preset temperature, the heating device can be controlled to descend, thereby avoiding overheating of the edge of the filter and causing damage to the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 A schematic diagram of the structure of the air purifier provided by the present invention;

[0031] Figure 2This is a schematic structural diagram of the heating device provided by the present invention.

[0032] Description of reference numerals:

[0033] 1-shell; 2-base; 3-lifting track; 4-filter; 5-drive motor; 6-guide groove; 7-temperature sensor; 8-connecting rod; 9-fan; 10-heating element; 11-heating fin; 12-heating device. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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] 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.

[0036] In the description of the present invention, it should be noted that, 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 it can be indirectly connected 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.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Example

[0039] This embodiment provides an air purifier, such as Figure 1 As shown, including:

[0040] The housing 1 has a receiving cavity therein, and an air inlet and an air outlet are arranged on the housing 1. Specifically, the air inlet is arranged on the lower side wall of the housing 1, and the air outlet is arranged at the top of the housing 1;

[0041] The base 2 is arranged in the accommodating cavity and fixedly arranged relative to the accommodating cavity; specifically, the base 2 can be arranged using a metal material, and in this case, it can be directly connected to the inner wall of the housing 1 by welding;

[0042] The lifting track 3 is arranged on the base 2; Figure 1 As shown, the lifting rails 3 are arranged on both sides of the heating device 12. As a preferred embodiment, the lifting rails 3 are arranged vertically between the base 2. As a variation, the lifting rails 3 can also be controlled to be tilted relative to the base 2 according to the relative position between the filter 4 and the heating device 12. At this time, the base 2 will deviate from the filter 4 to a certain extent. In this embodiment, the lifting rails 3 are made of metal and can be arranged on the base 2 by welding or threaded connection. At the same time, the lifting rails 3 and the base 2 can also be connected by integral injection molding.

[0043] The heating device 12 is movably arranged on the lifting track 3, such as Figure 1 As shown, it is arranged above the base 2 and can move up and down relative to the lifting track 3. In this embodiment, the heating device 12 itself can be directly made of resistance wire. As a preferred embodiment, Figure 2 As shown, the heating device 12 includes: a heating element 10; a plurality of heat sinks 11, which are arranged on the heating element 10 and are suitable for conducting the heat generated by the heating element 10. The heating element 10 can be one, in which case the positive and negative poles of the power supply can be respectively arranged at both ends of the heating element 10; as a variation, the heating element 10 can be multiple, in which case the multiple heating elements 10 are arranged in series with each other. At the same time, the heat sink 11 is vertically arranged on the heating element 10, and the multiple heat sinks 11 are arranged at intervals on the heating element 10;

[0044] The filter screen 4 is arranged at a downstream position of the heating device 12 along the flow direction of the airflow, and the heating device 12 is suitable for moving closer to or away from the filter screen 4. Figure 1 As shown, the filter screen 4 is arranged above the heating device 12, and the heat generated by the heating device 12 acts on the filter screen 4. Specifically, the filter screen 4 itself adopts a HEPA high efficiency filter screen 4.

[0045] The fan 9 is arranged in the accommodating cavity and is located on the side of the filter screen 4 different from the heating device 12. Specifically, Figure 1 As shown, the fan 9 is arranged above the accommodating chamber, and the wind generated by the fan 9 after its rotation will drive the airflow to move from top to bottom.

[0046] In this embodiment, in order to achieve the heating device 12 to be close to or away from the filter screen 4, it can be driven by mechanical means or by human means. When human means is used, external force can directly act on the heating device 12 to drive the heating device 12 to be raised or lowered. At this time, there is a certain damping between the heating device 12 and the lifting track 3, thereby ensuring that the heating device 12 is stable on the lifting track 3.

[0047] As a preferred implementation, in this embodiment, a mechanical drive is used to realize the lifting action of the heating device 12. Specifically, it includes: a driving device, which acts on the heating device 12 and is suitable for driving the heating device 12 to move relative to the filter screen 4.

[0048] In this embodiment, the structure of the driving device itself is not limited. As a preferred implementation, the driving device includes: a driving motor 5; a transmission mechanism, one end of which acts on the output end of the driving motor 5 and the other end of which acts on the filter 4.

[0049] Specifically, the driving motor 5 itself is arranged on the upper surface of the base 2, and there are no too many restrictions on the transmission structure, which can be gear transmission or chain transmission.

[0050] As a preferred implementation, in this embodiment, the transmission mechanism is a chain, a rotating wheel is provided on the lifting track 3, and the chain is respectively connected to the driving motor 5 and the heating device 12 through the rotating wheel.

[0051] In this embodiment, the location of the transmission wheel is not limited, and it can be set on the side wall of the lifting track 3. As a preferred embodiment, the rotating wheel is set on the top of the lifting track 3. The chain first rises to the rotating wheel, and then further descends and is connected to the heating device 12. By setting the rotating wheel, the smoothness of the chain during movement can be improved, thereby preventing the heating device 12 from getting stuck during movement.

[0052] As a variation, the transmission device can also be a rack, which is connected to the heating device 12 and then movably arranged on the lifting track 3. The output end of the drive motor 5 is connected to a gear, which drives the rack to realize the lifting action.

[0053] In the air purifier provided in this embodiment, the lifting track 3 is provided with a guide groove 6 extending in the longitudinal direction, and guide members suitable for being embedded in the guide groove 6 are provided at both ends of the heating device 12. Through the cooperation between the guide groove 6 and the guide member, it can be ensured that the heating device 12 is stably lifted and lowered in the height direction, thereby preventing the heating device 12 from shaking, thereby affecting the heating effect of the filter 4.

[0054] Specifically, the guide grooves 6 are respectively arranged on the two lifting rails 3 , and the two guide grooves 6 are arranged opposite to each other.

[0055] The air purifier provided in this embodiment further includes a temperature sensor 7 connected to the lifting track 3 and located between the filter 4 and the heating device 12 , and the temperature sensor 7 is communicatively connected to the driving motor 5 .

[0056] Specifically, the temperature sensor 7 and the drive motor 5 can transmit signals through wires, or can transmit signals through Bluetooth or WiFi, etc. The temperature of the filter 4 is sensed by the temperature sensor 7, and the heating device 12 can be controlled to rise to heat the filter 4, or to fall to cool the filter 4, so that the filter 4 can be sterilized automatically.

[0057] In the air purifier provided in this embodiment, a connecting rod 8 is provided on the lifting track 3, and the temperature sensor 7 is provided on the connecting rod 8 and is provided away from the center of the filter 4. By providing the connecting rod 8, the temperature sensor 7 can act on a portion deviating from the center of the filter 4. Since the temperature of the portion deviating from the center of the filter 4 is higher than the temperature of the center of the filter 4, when the temperature sensor 7 detects that the temperature exceeds the preset temperature, the heating device 12 can be controlled to descend, thereby preventing the edge of the filter 4 from overheating and causing damage to the filter 4.

[0058] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope created by this embodiment.

Claims

1. An air purifier, characterized in that: include: A housing (1) having a receiving cavity therein; A base (2) is arranged in the accommodating cavity and fixedly arranged relative to the accommodating cavity; A lifting track (3) is arranged on the base (2); A heating device (12) is movably arranged on the lifting track (3); the heating device (12) is located above the base (2) and can move up and down relative to the lifting track (3); A filter screen (4) is arranged at a downstream position of the heating device (12) along the flow direction of the airflow, and the heating device (12) is suitable for moving closer to or away from the filter screen (4); A driving device, acting on the heating device (12), suitable for driving the heating device (12) to move relative to the filter screen (4); comprising: Driving motor (5); A transmission mechanism, one end of which acts on the output end of the drive motor (5) and the other end of which acts on the filter screen (4); It also includes a temperature sensor (7) connected to the lifting track (3) and located between the filter screen (4) and the heating device (12), and the temperature sensor (7) is communicatively connected to the drive motor (5).

2. The air purifier according to claim 1, characterized in that: The transmission mechanism is a chain, a rotating wheel is provided on the lifting track (3), and the chain is respectively connected to the driving motor (5) and the heating device (12) through the rotating wheel.

3. The air purifier according to claim 2, characterized in that: The rotating wheel is arranged on the top of the lifting track (3).

4. The air purifier according to claim 1 or 2, characterized in that: The lifting track (3) is provided with a guide groove (6) extending in the longitudinal direction, and guide members suitable for being embedded in the guide groove (6) are provided at both ends of the heating device (12).

5. The air purifier according to claim 4, characterized in that: A connecting rod (8) is provided on the lifting track (3), and the temperature sensor (7) is provided on the connecting rod (8) and deviates from the center of the filter screen (4).

6. The air purifier according to claim 1, characterized in that: It also includes a fan (9) which is arranged in the accommodating cavity and located on a side of the filter screen (4) different from the heating device (12).

7. The air purifier according to claim 1, characterized in that: The heating device (12) comprises: A heating element (10); A plurality of heat sinks (11) are arranged on the heating element (10) and are suitable for conducting heat generated by the heating element (10).

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