Air purification device for toilet

Abstract

The present invention relates to the field of air purification, and in particular to an air purification device for a toilet, comprising: a filter, arranged at the lower end of a first shell; a negative oxygen ion generating device is arranged in the first shell, which includes an ionizing device and an airflow generating device, the ionizing device is used to ionize the outside air to generate negative oxygen ions, and the airflow generating device is used to blow the negative oxygen ions to the second shell; the second shell is provided with four airflow channels; a detection device is arranged in the area to be purified, and is used to collect the real-time temperature in the area to be purified; a controller is respectively connected to the detection device, the ionizing device and the airflow generating device. The present invention generates negative oxygen ions by ionizing air to enter the purification area to remove odors, and the detection device determines the spread speed of the odor by detecting the temperature, so that the controller can dynamically adjust the working state to cope with different situations, which is conducive to the efficient use of energy and the rapid elimination of odors.

Description

Technical Field

[0001] The invention relates to the field of air purification, and in particular to an air purification device for a toilet. Background Art

[0002] With the development of human civilization, people's requirements for the quality of life are getting higher and higher. When people use the toilet in the bathroom, the excrement will produce odor and spread throughout the bathroom, which cannot be eliminated for a long time. Although these odors will not cause people to get sick, they affect people's lives.

[0003] Patent document with publication number CN107158437A discloses a toilet deodorant, which includes, by weight, 10-30 parts of permethrin, 50-80 parts of ethylene glycol, and 2-5 parts of sodium hypochlorite. Permethrin and sodium hypochlorite are both Class III carcinogens, and diethanol is irritating to the human body.

[0004] It can be seen that the prior art has the following problems: chemical substances can only mask odors but cannot completely eliminate them, and chemical substances inhaled into the human body affect people's physical and mental health. Summary of the invention

[0005] To this end, the present invention provides an air purification device for a toilet, which can directly eliminate odors without adding any chemicals or irritating fragrances, rather than just masking the odors.

[0006] To achieve the above object, the present invention provides an air purification device for a toilet, comprising:

[0007] A filter is disposed at the lower end of the first shell and is detachably connected to the first shell to allow external air to enter the first shell;

[0008] A negative oxygen ion generating device is arranged in the first shell, which includes an ionizing device and an airflow generating device. The ionizing device is arranged above the airflow generating device. The ionizing device is used to ionize the external air and generate negative oxygen ions. The airflow generating device is used to blow the negative oxygen ions to the second shell.

[0009] The second shell is provided with four air flow channels, so that the negative oxygen ions are transported to the area to be purified through the air flow channels under the action of the air flow generating device;

[0010] A detection device, arranged in the area to be purified, for collecting the real-time temperature in the area to be purified;

[0011] The controller is respectively connected to the detection device, the ionization device and the airflow generating device, and is used to determine the odor spreading speed according to the real-time temperature, so as to adjust the ionization efficiency of the ionization device and the operating speed of the airflow generating device based on the spreading speed.

[0012] Further, the controller includes a particle attachment index determination unit and a spreading speed analysis unit, wherein the particle attachment index determination unit is used to determine the number of odor substances attached to any particle per unit time in the area to be purified according to the real-time temperature;

[0013] The spreading speed analysis unit is connected to the particle attachment index determination unit, and is used to determine the mass of the odor substances according to the quantity of the odor substances, and determine the odor spreading speed based on the mass of the odor substances.

[0014] Furthermore, the spreading speed analysis unit includes a microscopic image acquisition subunit, an image analysis subunit and a spreading speed output subunit, wherein:

[0015] The microscopic image acquisition subunit is used to acquire a spatial microscopic image in the area to be purified, wherein the spatial microscopic image includes a plurality of the particles;

[0016] An image analysis subunit, connected to the microscopic image acquisition subunit, for analyzing the spatial microscopic image to determine the area mean of particles in the spatial microscopic image;

[0017] The spreading speed output subunit is connected to the image analysis subunit to compare the area mean with the target mean, and if the area mean is less than the target mean, it is determined to be a weak spreading mode;

[0018] If the area mean is equal to the target mean, it is determined to be a standard spreading mode;

[0019] If the area mean is greater than the target mean, it is determined to be a strong spreading mode.

[0020] Further, the controller further comprises a mode determination unit and a selection unit, the mode determination unit being used to determine a dual adjustment operation mode in the strong propagation mode, and the selection unit being connected to the mode determination unit and being used to select improving the ionization efficiency and improving the operation speed according to the dual adjustment operation mode;

[0021] The mode determination unit is used for determining a single adjustment operation mode in the weak propagation mode, and the selection unit is used for selecting to reduce the ionization efficiency or reduce the operation speed according to the single adjustment operation mode.

[0022] Further, the selection unit includes an initial operation parameter collection subunit and an adjustment subunit, wherein the initial operation parameter collection subunit is used to collect the initial number of ionization heads of the ionization device;

[0023] The adjustment subunit is used to adjust the initial ionization head quantity according to the spreading mode.

[0024] Furthermore, a first adjustment coefficient and a second adjustment coefficient are provided in the adjustment subunit, and when the initial number of ionization heads is increased and adjusted, the first adjustment coefficient is selected to adjust the initial number of ionization heads;

[0025] When the initial number of ionization heads is adjusted to decrease, a second adjustment coefficient is selected to adjust the initial number of ionization heads, the first adjustment coefficient is greater than the second adjustment coefficient, and the first adjustment coefficient and the second adjustment coefficient are related to the number of particles in the area to be purified.

[0026] Furthermore, the lower end of the filter is in the form of a grid to block foreign matter from the filter;

[0027] The filter is in a concave shape with a cross-sectional area gradually decreasing from top to bottom to form a groove, and a fragrance sheet is arranged in the groove.

[0028] Furthermore, a fixing plate is provided in the first shell, the fixing plate is vertically arranged to fix the ionization device and the airflow generation device in the first shell, a square placement cavity is provided on one side of the fixing plate, and the ionization device and the airflow generation device are arranged in the square placement cavity;

[0029] The square cavity is attached to the fixing plate and fixedly connected to the fixing plate. A through hole is arranged on the side wall of the square cavity. The lower side wall of the square cavity is not closed to form a convection structure with the through hole.

[0030] Furthermore, an annular air outlet groove is provided on the side wall of the negative oxygen ion generating device, and an irregular protrusion is provided on the square receiving cavity. The annular air outlet groove is arranged opposite to the irregular protrusion, and the irregular protrusion is used to guide the negative oxygen ions flowing out of the annular air outlet groove to the second shell.

[0031] Furthermore, the air flow channel is provided with opening and closing blades to control the speed at which negative oxygen ions enter the toilet; the controller is provided with a human body sensor to sense the human body and receive sound information.

[0032] Compared with the prior art, the beneficial effect of the present invention lies in that the negative oxygen ions generated by the ionization device are effectively transported to the second shell under the promotion of the airflow generating device, and enter the area to be purified through the four airflow channels on the second shell, so that the negative oxygen ions can be output quickly and effectively and play a role, which helps to reduce the purification time and increase the purification efficiency. The detection device determines the spread speed of the odor by detecting the temperature. The acquisition of real-time temperature data provides important feedback information for the controller, so that the controller can dynamically adjust the working state to cope with different situations, which is conducive to the effective use of energy and the rapid elimination of odor.

[0033] In particular, the particle attachment index determination unit can dynamically reflect the effect of ambient temperature changes on the attachment of odorous substances, thereby improving the accuracy and real-time performance of control.

[0034] In particular, by comparing the particle area with the preset area and selecting different spreading modes, high efficiency and accuracy can be achieved through reliable data, and energy can be fully utilized in different situations, which helps save costs.

[0035] In particular, the initial operation parameter acquisition subunit accurately acquires the initial number of ionization heads of the ionization device, provides basic data for the adjustment subunit, and ensures the accuracy and effectiveness of the adjustment. The adjustment subunit adjusts the initial number of ionization heads according to the propagation mode, optimizes resource allocation, and avoids resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the overall disassembly of an air purification device for a toilet according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the overall structure of an air purification device for a toilet according to an embodiment of the present invention;

[0038] Figure 3 A top view of an air purification device for a toilet according to an embodiment of the present invention;

[0039] Figure 4 This is a control flow chart of a controller of an air purification device for a toilet according to an embodiment of the present invention; DETAILED DESCRIPTION

[0040] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0042] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0043] In addition, it should be noted that in the description of the present invention, 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] See also Figure 1 As shown, the air purification device for a toilet provided by an embodiment of the present invention includes:

[0045] The filter 1 is arranged at the lower end of the first housing 2 and is detachably connected to the first housing 2 so as to allow external air to enter the first housing 2;

[0046] A negative oxygen ion generating device 3 is arranged in the first shell 2, which includes an ionizing device and an airflow generating device. The ionizing device is arranged above the airflow generating device. The ionizing device is used to ionize the external air and generate negative oxygen ions. The airflow generating device is used to blow the negative oxygen ions to the second shell 14.

[0047] The second housing 14 is provided with four air flow channels 4, so that the negative oxygen ions are transported to the area to be purified through the air flow channels under the action of the air flow generating device;

[0048] A detection device, arranged in the area to be purified, for collecting the real-time temperature in the area to be purified;

[0049] The controller 5 is connected to the detection device, the ionization device and the airflow generating device respectively, and is used to determine the odor spreading speed according to the real-time temperature, so as to adjust the ionization efficiency of the ionization device and the operating speed of the airflow generating device based on the spreading speed.

[0050] Specifically, the ionization device and the airflow generating device are connected in an integrated manner. The ionization device generates negative oxygen ions by ionizing the air entering the first shell 2 through the filter 1. The airflow generating device generates an airflow below the ionization device to blow up the negative oxygen ions. The detection device uses a thermistor to detect the real-time temperature of the area to be purified. The controller 5 is communicated with the detection device and is electrically connected to the ionization device and the airflow generating device.

[0051] Specifically, the negative oxygen ions generated by the ionization device are effectively transported to the second shell 14 under the promotion of the airflow generating device, and enter the area to be purified through the four airflow channels 4 on the second shell 14, so that the negative oxygen ions can be output quickly and effectively and play a role, which helps to reduce the purification time and increase the purification efficiency. The detection device determines the spread speed of the odor by detecting the temperature. The acquisition of real-time temperature data provides important feedback information for the controller 5, so that the controller 5 can dynamically adjust the working state to cope with different situations, which is conducive to the efficient use of energy and the rapid elimination of odor.

[0052] Specifically, if Figure 4 As shown, the controller 5 includes a particle attachment index determination unit and a spreading speed analysis unit, wherein:

[0053] The particle attachment index determination unit is used to determine the number of odor substances attached to any particle in the area to be purified per unit time according to the real-time temperature;

[0054] The spreading speed analysis unit is connected to the particle attachment index determination unit, and is used to determine the mass of the odor substances according to the quantity of the odor substances, and determine the odor spreading speed based on the mass of the odor substances.

[0055] Specifically, the particle attachment index determination unit in the embodiment of the present invention can evaluate the aggregation degree of odor substances in the area to be purified, which can be measured by the mass of odor substances attached per unit time. In a specific implementation, the aggregation degree of odor substances in the area to be purified is set to A, and the unit is set to ug / s, and the real-time temperature is set to T, and the unit is Obviously, in practical applications, temperature will affect the microscopic movement of odor substances, and the movement degree of odor substances is also different at different temperatures. The embodiment of the present invention can obtain the correlation coefficient C between the mass of attached odor substances per unit time and temperature by performing multiple tests. The unit of C is ug / s· In the embodiment of the present invention, A=C×T, and the correlation coefficient can be set to 10 in practical applications.

[0056] In the specific implementation process, the particle attachment index determination unit is set at a real-time temperature T of 25 When the aggregation degree of the odor positions in the area to be purified is 250 ug / s.

[0057] Specifically, the particle adhesion index determination unit can dynamically reflect the influence of environmental temperature changes on the adhesion of odor substances, improving the accuracy and real-time performance of control.

[0058] Specifically, the spread speed analysis unit includes a microscopic image acquisition sub-unit, an image analysis sub-unit, and a spread speed output sub-unit. Among them,

[0059] The microscopic image acquisition sub-unit is used to acquire the spatial microscopic image in the area to be purified, and several such particles are included in the spatial microscopic image;

[0060] The image analysis sub-unit, which is connected to the microscopic image acquisition sub-unit, is used to analyze the spatial microscopic image to determine the average area of the particles in the spatial microscopic image;

[0061] The spread speed output sub-unit, which is connected to the image analysis sub-unit, is used to compare the average area with the target average value. If the average area is less than the target average value, it is determined as the weak spread mode;

[0062] If the average area is equal to the target average value, it is determined as the standard spread mode;

[0063] If the average area is greater than the target average value, it is determined as the strong spread mode.

[0064] Specifically, when the number B of particles in the area to be purified is 5, the average particle area S = (S1 + S2 + S3 + S4 + S5) / B, where S1 represents the actual area value of the first particle, S2 represents the actual area value of the second particle, S3 represents the actual area value of the third particle, S4 represents the actual area value of the fourth particle, and S5 represents the actual area value of the fifth particle. The average particle area is compared with the preset average area S0 = 3, where the unit of S0 is square micrometers.

[0065] If S < S0, the spread speed output sub-unit determines it as the weak spread mode;

[0066] If S = S0, the spread speed output sub-unit determines it as the standard spread mode;

[0067] If S > S0, the spread speed output sub-unit determines it as the strong spread mode.

[0068] Specifically, by comparing the particle area with the preset area to select different spread modes, high efficiency and accuracy are achieved through reliable data, and full utilization of energy is achieved in different situations, which helps to save costs.

[0069] Specifically, the controller 5 further includes a mode determination unit and a selection unit, wherein the mode determination unit is used to determine a dual adjustment operation mode in the strong propagation mode, and the selection unit is connected to the mode determination unit to select to improve the ionization efficiency and to improve the operation speed according to the dual adjustment operation mode;

[0070] The mode determination unit is used for determining a single adjustment operation mode in the weak propagation mode, and the selection unit is used for selecting to reduce the ionization efficiency or reduce the operation speed according to the single adjustment operation mode.

[0071] Specifically, the mode determination unit determines the dual adjustment operation mode in the strong spread mode, increases the number of ionization heads, and adjusts the fan speed from the standard wind speed v0=2m / s to v1=3m / s; determines the single adjustment operation mode in the weak spread mode, and the selection unit is used to select to reduce the number of ionization heads of the ionization device or adjust the fan speed from the standard wind speed v0=2m / s to v2=1m / s according to the single adjustment operation mode.

[0072] Specifically, the mode determination unit can automatically determine a suitable adjustment operation mode according to the spreading mode, thereby realizing intelligent selection.

[0073] Specifically, the selection unit includes an initial operation parameter acquisition subunit and an adjustment subunit, wherein the initial operation parameter acquisition subunit is used to acquire the initial number of ionization heads of the ionization device;

[0074] The adjustment subunit is used to adjust the initial ionization head quantity according to the spreading mode.

[0075] Specifically, the initial operation parameter acquisition subunit acquires the initial number of ionization heads T0, and the adjustment subunit increases the number of ionization heads in the strong propagation mode and decreases the number of ionization heads in the weak propagation mode.

[0076] Specifically, the initial operation parameter acquisition subunit accurately acquires the initial number of ionization heads of the ionization device, provides basic data for the adjustment subunit, and ensures the accuracy and effectiveness of the adjustment. The adjustment subunit adjusts the initial number of ionization heads according to the propagation mode, optimizes resource allocation, and avoids resource waste.

[0077] Specifically, the adjustment subunit is provided with a first adjustment coefficient and a second adjustment coefficient, and when the initial number of ionization heads is increased and adjusted, the first adjustment coefficient is selected to adjust the initial number of ionization heads;

[0078] When the initial number of ionization heads is adjusted to decrease, the second adjustment coefficient is selected to adjust the initial number of ionization heads, the first adjustment coefficient is greater than the second adjustment coefficient, and both the first adjustment coefficient and the second adjustment coefficient are related to the number of particles in the area to be purified.

[0079] Specifically, the first adjustment coefficient is x, and the second adjustment coefficient is y, wherein x>y, the first adjustment coefficient x is selected when the initial number of ionization heads is increased, and the second adjustment coefficient y is selected when the initial number of ionization heads is decreased, and the first adjustment coefficient x and the second adjustment coefficient y are both related to the number of particles B in the area to be purified, x=B / 50000, y=B / When the initial number of ionization heads N0 is increased, the adjusted number of ionization heads is N=(1+x)N0; when the initial number of ionization heads N0 is decreased, the adjusted number of ionization heads is N=(1-y)N0.

[0080] In the specific implementation process, when the initial number of ionization heads N0=10 and the number of particles in the area to be purified B=20000, when the initial number of ionization heads is increased, the first adjustment coefficient is selected to adjust the initial number of ionization heads. At this time, the first adjustment coefficient x=20000 / 50000=0.4, and the adjusted number of ionization heads is N=(1+0.4)×10=14. When the initial number of ionization heads is decreased, the second adjustment coefficient is selected to adjust the initial number of ionization heads. At this time, the first adjustment coefficient x=20000 / 50000=0.4. =0.2, the adjusted number of ionization heads is N=(1-0.2)×10=8.

[0081] Specifically, when the adjustment subunit adjusts the initial number of ionization heads, the first adjustment coefficient and the second adjustment coefficient are respectively used, so that the increase and decrease of the number of ionization heads are more accurate and reasonable, and the flexibility and accuracy of the adjustment are improved.

[0082] Specifically, if Figure 2 As shown, the lower end of the filter 1 is in the form of a grid, which is used to block foreign matter outside the filter 1;

[0083] The filter 1 is in a concave shape with a cross-sectional area gradually decreasing from top to bottom to form a groove, and a fragrance sheet is arranged in the groove.

[0084] Specifically, the lower end of the filter 1 may also be in a grid shape, and the fragrance sheet may be disassembled and replaced.

[0085] Specifically, the lower end of the filter 1 is in the shape of a grid, which helps to prevent foreign matter from entering the first shell 2 and ensure the normal operation of the negative oxygen ion generating device 3. The fragrance sheet helps to increase the fragrance of the air and further improve the air quality.

[0086] Specifically, a fixing plate 6 is disposed in the first shell 2, and the fixing plate 6 is vertically disposed to fix the negative oxygen ion generating device 3 in the first shell 2. A square placement cavity 7 is disposed on one side of the fixing plate 6, and the negative oxygen ion generating device 3 is disposed in the square placement cavity;

[0087] The square receiving cavity 7 is attached to the fixing plate 6 and fixedly connected to the fixing plate 6. A through hole is arranged on the side wall of the square receiving cavity 7. The lower side wall of the square receiving cavity 7 is not closed to form a convection structure with the through hole.

[0088] Specifically, the fixing plate 6 is vertically and detachably connected to the top of the second shell 14, and the negative oxygen ion generating device 3 is detachably installed in the square storage cavity 7. The through holes arranged on the square storage cavity 7 can be on any side wall except the three side walls that are in contact with the fixing plate 6.

[0089] Specifically, the square receiving cavity 7 arranged on one side of the fixed plate 6 can accommodate the negative oxygen ion generating device 3. The square receiving cavity 7 is arranged in close contact with the fixed plate 6 and is fixedly connected, which is beneficial to the stability of the negative oxygen ion generating device 3. The through holes on the side walls of the square receiving cavity 7 and the unclosed lower side wall design form a convection structure, which is helpful to blow up all the negative oxygen ions and improve the use efficiency.

[0090] Specifically, an annular air outlet groove 8 is provided on the side wall of the negative oxygen ion generating device 3, and an irregular protrusion 9 is provided on the square receiving cavity 7. The annular air outlet groove 8 and the irregular protrusion 9 are arranged opposite to each other, and the irregular protrusion 9 is used to guide the negative oxygen ions flowing out of the annular air outlet groove 8 to the second shell 14.

[0091] Specifically, the negative oxygen ions are emitted from the annular air outlet groove 8 on the side wall of the negative oxygen ion generating device 3 , the lower part of the special-shaped protrusion 9 is arc-shaped and opposite to the annular air outlet groove 8 , and the upper part is rectangular and connected to the second shell 14 .

[0092] Specifically, the annular gas outlet groove 8 provided on the side wall of the negative oxygen ion generating device 3 can release negative oxygen ions uniformly and in a wider release area. The special-shaped protrusion 9 guides the negative oxygen ion flow to the second shell 14 through the diversion effect, thereby optimizing the airflow path.

[0093] Specifically, the air flow channel 4 is provided with opening and closing blades to control the speed at which negative oxygen ions enter the toilet; the controller 5 is provided with a human body sensor 10 to sense the human body and receive sound information.

[0094] Specifically, the opening and closing blades at the air flow channel 4 are opened and closed under the control of the controller 5, opening when the number of ionization heads in operation increases, and closing when the number of ionization heads in operation decreases; the human body sensor 10 senses through infrared rays that after a person leaves the toilet after using the toilet, the controller 5 controls the negative oxygen ion generating device 3 to emit negative oxygen ions. When the sound information is less than 20 decibels, it is determined that there is no one in the bathroom and the exhaust fan is turned off, and the controller 5 controls the negative oxygen ion generating device to turn off.

[0095] Specifically, by setting opening and closing blades at the air flow channel 4, precise control of the speed at which negative oxygen ions enter the toilet can be achieved. The controller automatically starts after the human body sensor 10 senses that a person has gone to the toilet and left, and automatically shuts down when there is no one in the bathroom and the exhaust fan is turned off. This is accurate and convenient, and improves the user experience.

[0096] In practical applications, the air purification device for a toilet in an embodiment of the present invention may include:

[0097] The shell is divided into a first shell 2 and a second shell 14. The first shell 2 is arranged at the lower end of the second shell 14. The first shell 2 and the second shell 14 are detachably connected.

[0098] A filter 1 is disposed at the lower end of the first housing 2 and is detachably connected to the first housing 2 to allow external air to enter the first housing 2;

[0099] A negative oxygen ion generating device is arranged in the first shell 2, and the negative oxygen ion generating device includes an ionizing device and an airflow generating device, the ionizing device is used to ionize the external air and generate negative oxygen ions, and the airflow generating device is used to blow the negative oxygen ions to the second shell 14;

[0100] The second housing 14 is provided with four air flow channels 4 so that the negative oxygen ions pass through the air flow channels 4 to the area to be purified;

[0101] A detection device is arranged in the area to be purified, and is used to collect the real-time temperature in the area to be purified;

[0102] The controller 5 is connected to the detection device, the ionization device and the airflow generating device respectively, and is used to determine the spread of the odor according to the real-time temperature, so as to adjust the ionization efficiency of the ionization device and the operating speed of the airflow generating device based on the spread speed.

[0103] The two sides of the negative oxygen ion generating device 3 are tightly fitted with the square receiving cavity 7, and two bolt holes are arranged at diagonal positions outside the square receiving cavity 7 to be detachably connected with the negative oxygen ion generating device 3.

[0104] Furthermore, the airflow generating device is provided with a fan. When the temperature information received by the controller 5 is higher, the controller 5 controls the fan to speed up the operation speed to blow up the negative oxygen ions at a faster speed.

[0105] Specifically, after the ionization device generates negative oxygen ions, the fan blows up the negative oxygen ions and enters the square storage cavity 7. A lithium ion battery 16 is provided on the other side of the fixed plate 6. The lithium ion battery 16 supplies power to the ionization device, the airflow generating device and the controller 5.

[0106] Furthermore, a button unit is arranged above the controller 5, and the button unit includes a physical button 17 and a cover plate 11. The physical button 17 is four separate cubes, and each of the physical buttons 17 is provided with a spring to provide feedback force and a recovery button. The physical button 17 is arranged on the controller 5, and the functions of each of the physical buttons 17 are factory default power, power reduction, power increase and manual mode respectively. The cover plate 11 is arranged above the second shell 14 and is detachably connected to the second shell 14. The cover plate 11 has a hole in the part in contact with the physical button 17 and the human body sensing device 1, and the physical button 17 and the human body sensor 10 are exposed from above the cover plate 11. A switch 12 is arranged on the side of the controller 5 to control the controller 5 to be turned on and off.

[0107] Furthermore, if Figure 3 As shown, a pressing plate 15 is provided above the cover plate 11 , and the pressing plate 15 is embedded in the cover plate 11 . A circular through hole is provided at the contact portion of the pressing plate 15 with the human body sensor 10 , and the through hole and the human body sensor 10 are in contact, which helps to prevent foreign objects from entering the second shell 14 .

[0108] Furthermore, a through hole is opened at the center of the side connection between the first shell 2 and the second shell 14 and at a position corresponding to the switch 12. A keycap 13 is provided on the switch 12. The keycap 13 is installed on the switch 12 through the through hole. The keycap 13 protrudes from the through hole, and the controller 5 is opened by pressing the keycap 13.

[0109] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0110] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air purification device for a toilet, characterized in that: include: A filter (1) is arranged at the lower end of the first shell (2) and is detachably connected to the first shell (2) so as to allow external air to enter the first shell (2); A negative oxygen ion generating device (3) is arranged in the first shell (2), comprising an ionizing device and an airflow generating device, the ionizing device is arranged above the airflow generating device, the ionizing device is used to ionize the external air and generate negative oxygen ions, and the airflow generating device is used to blow the negative oxygen ions to the second shell (14); The second shell (14) is provided with four air flow channels (4), so that the negative oxygen ions are transported to the area to be purified through the air flow channels (4) under the action of the air flow generating device; A detection device, arranged in the area to be purified, for collecting the real-time temperature in the area to be purified; The controller (5) is connected to the detection device, the ionization device and the airflow generation device respectively, and is used to determine the odor spreading mode according to the real-time temperature, so as to adjust the ionization efficiency of the ionization device and the operating speed of the airflow generation device based on the spreading mode; The controller (5) comprises a particle attachment index determination unit and a spreading pattern analysis unit, wherein the particle attachment index determination unit is used to determine the amount of odorous substances attached to any particle in the area to be purified per unit time according to the real-time temperature; a spreading pattern analysis unit connected to the particle attachment index determination unit, for determining the mass of the odor substances according to the quantity of the odor substances, and determining the odor spreading pattern based on the mass of the odor substances; The spreading pattern analysis unit includes a microscopic image acquisition subunit, an image analysis subunit and a spreading pattern output subunit, wherein: The microscopic image acquisition subunit is used to acquire a spatial microscopic image in the area to be purified, wherein the spatial microscopic image includes a plurality of the particles; An image analysis subunit, connected to the microscopic image acquisition subunit, for analyzing the spatial microscopic image to determine the area mean of particles in the spatial microscopic image; The spreading mode output subunit is connected to the image analysis subunit, and is used to compare the area mean with the target mean. If the area mean is less than the target mean, it is determined to be a weak spreading mode; If the area mean is equal to the target mean, it is determined to be a standard spreading mode; If the area mean is greater than the target mean, it is determined to be a strong spreading mode; The controller (5) further comprises a mode determination unit and a selection unit, wherein the mode determination unit is used to determine a dual adjustment operation mode in the strong propagation mode, and the selection unit is connected to the mode determination unit and is used to select to improve the ionization efficiency and to improve the operation speed according to the dual adjustment operation mode; The mode determination unit is used for determining a single adjustment operation mode in the weak propagation mode, and the selection unit is used for selecting to reduce the ionization efficiency or reduce the operation speed according to the single adjustment operation mode.

2. The air purification device for a toilet according to claim 1, characterized in that: The selection unit includes an initial operation parameter acquisition subunit and an adjustment subunit, wherein the initial operation parameter acquisition subunit is used to acquire the initial number of ionization heads of the ionization device; The adjustment subunit is used to adjust the initial ionization head quantity according to the spreading mode.

3. The air purification device for a toilet according to claim 2, characterized in that: The adjustment subunit is provided with a first adjustment coefficient and a second adjustment coefficient. When the initial number of ionization heads is increased and adjusted, the first adjustment coefficient is selected to adjust the initial number of ionization heads. When the initial number of ionization heads is adjusted to decrease, a second adjustment coefficient is selected to adjust the initial number of ionization heads, the first adjustment coefficient is greater than the second adjustment coefficient, and both the first adjustment coefficient and the second adjustment coefficient are related to the number of particles in the area to be purified.

4. The air purification device for a toilet according to claim 3, characterized in that: The lower end of the filter (1) is in the form of a grille, which is used to block foreign matter outside the filter (1); The filter (1) is in a concave shape with a cross-sectional area gradually decreasing from top to bottom, so as to form a groove, and a fragrance sheet is arranged in the groove.

5. The air purification device for a toilet according to claim 4, characterized in that: A fixing plate (6) is arranged in the first shell (2), the fixing plate (6) being arranged vertically and used to fix the ionization device and the airflow generation device in the first shell (2), a square accommodating cavity (7) being arranged on one side of the fixing plate (6), the ionization device and the airflow generation device being arranged in the square accommodating cavity (7); The square receiving cavity (7) is attached to the fixing plate (6) and fixedly connected to the fixing plate (6); a through hole is provided on the side wall of the square receiving cavity (7); and the lower side wall of the square receiving cavity (7) is not closed so as to form a convection structure with the through hole.

6. The air purification device for a toilet according to claim 5, characterized in that: An annular gas outlet groove (8) is provided on the side wall of the negative oxygen ion generating device (3), and a special-shaped protrusion (9) is provided on the square receiving cavity (7). The annular gas outlet groove (8) and the special-shaped protrusion (9) are arranged opposite to each other, and the special-shaped protrusion (9) is used to guide the negative oxygen ions flowing out of the annular gas outlet groove (8) to the second shell (14).

7. The air purification device for a toilet according to claim 6, characterized in that: The air flow channel (4) is provided with opening and closing blades for controlling the speed at which negative oxygen ions enter the toilet; the controller (5) is provided with a human body sensor (10) for sensing the human body and receiving sound information.

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