Air purifier and adjusting method thereof

Abstract

The invention relates to the technical field of air purifiers and an adjusting method thereof.The air purifier comprises a shell, a filter element and an air blowing piece, the filter element is arranged at an air outlet to filter impurities, the air blowing piece is arranged at the bottom end of an inner cavity, an air inlet pipe opening is formed in the side, close to the air blowing piece, of the shell, and an ultrasonic detection assembly is arranged at the bottom of the shell; the ultrasonic detection assembly is used for measuring the distance of an indoor wall surface, an air inlet assembly is arranged in the middle of the air inlet pipe opening, the air inlet assembly comprises a rotary cover plate, and the air inlet assembly is opened and closed through the rotary cover plate and used for controlling the air inlet amount of the air inlet pipe opening and obtaining wall surface distance measurement information through ultrasonic distance measurement; and a plane numerical model is constructed in the polar coordinate digital model to obtain indoor plane space area data, so that the air flow of the air inlet assembly is adaptively adjusted according to the indoor space capacity, the excess purification power of the air purifier can be effectively reduced, and the purification effect of the air purifier is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of air purifiers, in particular to an air purifier and a regulating method thereof. 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 air cleanliness. They are mainly divided into household, commercial, industrial, and building. Generally, particles are captured in the following four ways: direct interception, inertial collision, Brownian diffusion mechanism, and screening effect. It has a good collection effect on fine particles. In order to obtain high purification efficiency, the filter needs to be dense and needs to be replaced regularly.

[0003] Since air purifiers are generally used indoors, their purification effect is similar to that of air conditioners. Their cooling efficiency needs to match the indoor space to achieve a good cooling effect. In other words, the air purifier's corresponding intake and exhaust volume needs to match the indoor space capacity. Therefore, in view of these current situations, it is necessary to develop an air purifier and its adjustment method to meet the needs of actual use. Summary of the invention

[0004] The purpose of the present invention is to provide an air purifier and an adjustment method thereof, so as to control the intake and exhaust volume of the air purifier so as to match the indoor space capacity and obtain a matching air purification effect under appropriate intake and exhaust power.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The air purifier comprises a shell, a filter element and a blower. An inner cavity is provided inside the shell, the top of the inner cavity is an air outlet, the filter element is arranged at the air outlet to filter impurities, the blower is arranged at the bottom of the inner cavity, an air inlet is provided on one side of the shell close to the blower, the air inlet is connected with the inner cavity, an ultrasonic detection assembly is provided at the bottom of the shell, the ultrasonic detection assembly is used to measure the distance to the indoor wall, an air inlet assembly is provided in the middle of the air inlet, the air inlet assembly comprises a rotating cover plate, the air inlet assembly is opened and closed by the rotating cover plate, and is used to control the air intake of the air inlet.

[0006] In the above description, as a further solution, the ultrasonic detection assembly includes an ultrasonic sensor module and a rotating indexing plate. The ultrasonic sensor module is rotatably arranged on the top of the shell through the rotating indexing plate, and the ultrasonic sensor module can be rotated 90 degrees in sequence as a cycle through the rotating indexing plate.

[0007] In the above description, as a further solution, the air intake assembly also includes a connecting cylinder and a motor. The rotating cover is a hollow structure. The rotating cover can be rotatably arranged inside the connecting cylinder. The rotating cover can be rotated inside the connecting cylinder to open or close through the motor.

[0008] In the above description, as a further solution, a first lever is provided at the output end of the motor, a rotatable second lever is provided on one side of the connecting cylinder, one end of the second lever extends to the interior of the connecting cylinder and is fixedly connected to one side of the rotating cover plate, a connecting rod is provided between the first lever and the second lever, and both ends of the connecting rod are movably connected to the first lever and the second lever respectively.

[0009] A method for adjusting an air purifier comprises the following steps: S1, obtain ultrasonic ranging data, and measure the wall ranging information within a 90-degree range through the ultrasonic sensor module; S2, constructing a polar coordinate digital model, by continuously rotating the ultrasonic sensor module 90 degrees, obtaining 4 groups of ultrasonic ranging data in S1, constructing a plane numerical model in the polar coordinate digital model, and obtaining indoor plane space area data; S3, input the indoor space height value, calculate the indoor space capacity through the indoor plane space area data and the indoor space height value, and adjust the air flow of the intake assembly according to the indoor space capacity.

[0010] In the above description, as a further solution, the obtaining of ultrasonic ranging data in S1 further includes generating ultrasonic information according to a ranging instruction, obtaining first timing information, encoding and modulating the ultrasonic information to obtain ultrasonic coding information, sending a ranging ultrasonic wave according to the ultrasonic coding information, obtaining a ranging echo corresponding to the ranging ultrasonic wave, decoding and modulating the ranging echo to obtain decoding information, obtaining second timing information according to the decoding information, and calculating the ultrasonic ranging data according to the first timing information and the second timing information.

[0011] In the above description, as a further solution, obtaining the second timing information according to the decoded information also includes judging whether the decoded information is valid information, comparing the decoded information with the ultrasonic information, and if the decoded information is consistent with the ultrasonic information, then the decoded information is valid information.

[0012] In the above description, as a further solution, in the plane numerical model in S1, the obstacle data is eliminated, the maximum value appearing between multiple consecutive similar ranging data is the obstacle data, and the ultrasonic ranging data located between two adjacent obstacle data are averaged to replace the obstacle data.

[0013] The beneficial effects produced by the present invention are as follows: The air purifier and adjustment method of the present application adopt the principle of ultrasonic ranging to perform all-round ranging sensing of the wall in a closed room, thereby obtaining the digital space capacity of the room in a polar coordinate digital model. According to the measured indoor space capacity, the opening and closing gap size of the rotating cover plate in the air intake assembly can be driven, thereby adjusting the air intake volume of the air intake pipe port to adapt to the indoor space capacity, which can effectively reduce the excess purification power of the air purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the three-dimensional structure of the air purifier described in this embodiment; Figure 2 is a schematic diagram of the internal structure of the air purifier described in this embodiment; Figure 3 is a schematic structural diagram of an air intake assembly in the air purifier according to this embodiment; Figure 4 is a schematic diagram of a single set of ultrasonic ranging data described in this embodiment; Figure 5 A schematic diagram of constructing a planar numerical model of multiple sets of ultrasonic ranging data in the present embodiment in a polar coordinate digital model; In the figure: 1-shell, 2-inner cavity, 3-air outlet, 4-blowing member, 41-motor, 5-filter element, 6-inlet pipe, 8-inlet assembly, 9-ultrasonic detection assembly, 91-ultrasonic sensor module, 92-rotating indexing plate, 81-connecting cylinder, 82-rotating cover plate, 83-motor, 84-first lever, 85-second lever, 86-connecting rod. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0016] See also Figure 1-5The air purifier specifically implemented includes a shell 1, a filter element 5 and a blasting member 4. An inner cavity 2 is provided inside the shell 1, and the top of the inner cavity 2 is an air outlet 3. The filter element 5 is arranged at the air outlet 3 to filter impurities. The blasting member 4 is arranged at the bottom of the inner cavity 2. An air inlet port 6 is provided on the side of the shell 1 close to the blasting member 4. The air inlet port 6 is connected with the inner cavity 2 for conduction. An ultrasonic detection assembly 9 is provided at the bottom of the shell 1. The ultrasonic detection assembly 9 is used to measure the distance of the indoor wall. The ultrasonic detection assembly 9 includes an ultrasonic sensor module 91 and a rotating indexing plate 92. The ultrasonic sensor module 91 is rotatably arranged on the top of the shell 1 through the rotating indexing plate 92, and the ultrasonic sensor module 91 can be rotated 90 degrees in sequence as a cycle through the rotating indexing plate 92. An air inlet assembly 8 is provided in the middle of the air inlet port 6. The air inlet assembly 8 includes a rotating cover plate 82. The air inlet assembly 8 is opened and closed by the rotating cover plate 82 to control the air intake of the air inlet port 6.

[0017] Specific as Figure 3 As shown, the air intake assembly 8 also includes a connecting cylinder 81 and a motor 83. The rotating cover plate 82 is a hollow structure. The rotating cover plate 82 is rotatably arranged inside the connecting cylinder 81. The rotating cover plate 82 can be located inside the connecting cylinder 81 through the motor 83 to rotate open or close. A first lever 84 is provided at the output end of the motor 83, and a rotatable second lever 85 is provided on one side of the connecting cylinder 81. One end of the second lever 85 extends to the inside of the connecting cylinder 81 and is fixedly connected to one side of the rotating cover plate 82. A connecting rod 86 is provided between the first lever 84 and the second lever 85, and both ends of the connecting rod 86 are movably connected to the first lever 84 and the second lever 85 respectively.

[0018] By adopting the principle of ultrasonic ranging, the wall surface is sensed in all directions in a closed room, and the digital space capacity of the room is obtained in the polar coordinate digital model. According to the measured indoor space capacity, the opening and closing gap size of the rotating cover 82 in the air intake assembly 8 can be driven, so as to adjust the air intake volume of the air intake pipe port 6 to adapt to the indoor space capacity, which can effectively reduce the excess purification power of the air purifier.

[0019] A method for adjusting an air purifier comprises the following steps: S1, obtaining ultrasonic ranging data, and measuring the wall ranging information within a 90-degree range through the ultrasonic sensor module 91; S2, constructing a polar coordinate digital model, by continuously rotating the ultrasonic sensor module 91 by 90 degrees, obtaining 4 groups of ultrasonic ranging data in S1, constructing a plane numerical model in the polar coordinate digital model, and obtaining indoor plane space area data; S3, input the indoor space height value, calculate the indoor space capacity through the indoor plane space area data and the indoor space height value, and adjust the air flow of the intake assembly 8 according to the indoor space capacity.

[0020] Specifically, obtaining ultrasonic ranging data in S1 also includes generating ultrasonic information according to a ranging instruction, obtaining first timing information, encoding and modulating the ultrasonic information to obtain ultrasonic coding information, sending a ranging ultrasonic wave according to the ultrasonic coding information, obtaining a ranging echo corresponding to the ranging ultrasonic wave, decoding and modulating the ranging echo to obtain decoding information, obtaining second timing information according to the decoding information, and calculating the ultrasonic ranging data according to the first timing information and the second timing information.

[0021] The method of obtaining the second timing information according to the decoded information further includes determining whether the decoded information is valid information, comparing the decoded information with the ultrasonic information, and if the decoded information is consistent with the ultrasonic information, the decoded information is valid information.

[0022] In a further solution, in the plane numerical model of S1, the obstacle data is eliminated, the maximum value appearing between multiple consecutive similar ranging data is the obstacle data, and the ultrasonic ranging data located between two adjacent obstacle data are averaged to replace the obstacle data.

[0023] In the actual ultrasonic ranging process, it may be affected by objects such as human bodies or furniture in the indoor space. In a single set of ultrasonic ranging data, the following may appear: Figure 4 In the situation shown, the object located in front of the wall will have a smaller minimum difference, and the window or door located in the middle of the wall will have a larger maximum difference. Therefore, by eliminating the obstacle data, the influence of the obstacle data on the plane numerical model constructed in the polar coordinate digital model in S2 can be eliminated, thereby obtaining more accurate indoor plane space area data.

[0024] A working process of an air purifier: obtaining ultrasonic distance measurement data within a 90-degree range of a first position through an ultrasonic sensor module 91, and then rotating the ultrasonic sensor module 91 90 degrees three times in a clockwise or counterclockwise direction through a rotating indexing plate 92, to obtain a total of 4 sets of ultrasonic distance measurement data; then filtering the 4 sets of ultrasonic distance measurement data through obstacle data elimination, constructing a plane numerical model in a polar coordinate digital model, obtaining indoor plane space area data, and calculating the indoor space capacity size through the indoor plane space area data and the indoor space height value; The motor 83 is driven according to the calculated indoor space capacity, and the first lever 84 is rotated to drive the connecting rod 86 and the second lever 85 to work in conjunction, thereby controlling the opening and closing gap size of the rotating cover 82 in the air intake assembly 8, thereby obtaining an adapted air intake flow rate, and the air in the inner cavity 2 is passed through the filter element 5 through the blowing member 4 to filter impurities, and then discharged back to the inner room from the air outlet 3, thereby completing the indoor purification and air intake adjustment of the air purifier.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. An air purifier, comprising a housing, a filter element and a blower, wherein an inner cavity is provided inside the housing, the top of the inner cavity is an air outlet, the filter element is arranged at the air outlet to filter impurities, the blower is arranged at the bottom of the inner cavity, an air inlet is arranged on one side of the housing close to the blower, and the air inlet is connected to the inner cavity, characterized in that: An ultrasonic detection assembly is provided at the bottom of the shell, which is used to measure the distance to the indoor wall. An air intake assembly is provided in the middle of the air intake pipe opening, and the air intake assembly includes a rotating cover plate. The air intake assembly is opened and closed by the rotating cover plate to control the air intake volume of the air intake pipe opening.

2. The air purifier according to claim 1, characterized in that: The ultrasonic detection assembly includes an ultrasonic sensor module and a rotating indexing plate. The ultrasonic sensor module is rotatably arranged on the top of the shell through the rotating indexing plate, and the ultrasonic sensor module can be rotated 90 degrees in sequence as one cycle through the rotating indexing plate.

3. The air purifier according to claim 1, characterized in that: The air intake assembly also includes a connecting cylinder and a motor. The rotating cover is a hollow structure. The rotating cover can be rotatably arranged inside the connecting cylinder. The rotating cover can be rotated inside the connecting cylinder to open or close through the motor.

4. The air purifier according to claim 3, characterized in that: A first lever is provided at the output end of the motor, a rotatable second lever is provided on one side of the connecting cylinder, one end of the second lever extends to the inside of the connecting cylinder and is fixedly connected to one side of the rotating cover plate, a connecting rod is provided between the first lever and the second lever, and both ends of the connecting rod are movably connected to the first lever and the second lever respectively.

5. A method for adjusting an air purifier, characterized in that: The following steps are involved: S1, obtain ultrasonic ranging data, and measure the wall ranging information within a 90-degree range through the ultrasonic sensor module; S2, constructing a polar coordinate digital model, by continuously rotating the ultrasonic sensor module 90 degrees, obtaining 4 groups of ultrasonic ranging data in S1, constructing a plane numerical model in the polar coordinate digital model, and obtaining indoor plane space area data; S3, input the indoor space height value, calculate the indoor space capacity through the indoor plane space area data and the indoor space height value, and adjust the air flow of the intake assembly according to the indoor space capacity.

6. The method for adjusting an air purifier according to claim 5, characterized in that: The obtaining of ultrasonic ranging data in S1 further includes generating ultrasonic information according to a ranging instruction, obtaining first timing information, encoding and modulating the ultrasonic information to obtain ultrasonic coding information, sending a ranging ultrasonic wave according to the ultrasonic coding information, obtaining a ranging echo corresponding to the ranging ultrasonic wave, decoding and modulating the ranging echo to obtain decoding information, obtaining second timing information according to the decoding information, and calculating the ultrasonic ranging data according to the first timing information and the second timing information.

7. The air purifier adjustment method according to claim 6, characterized in that: Acquiring the second timing information according to the decoded information also includes determining whether the decoded information is valid information, comparing the decoded information with the ultrasonic information, and if the decoded information is consistent with the ultrasonic information, the decoded information is valid information.

8. The air purifier and the adjustment method thereof according to claim 5, characterized in that: In the plane numerical model of S1, the obstacle data is eliminated, the maximum value between a plurality of consecutive and similar distance measurement data is the obstacle data, and the ultrasonic distance measurement data located between two adjacent obstacle data are averaged to replace the obstacle data.

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