Air treatment system

[0078] A. Summary

[0079] An air treatment system ("ATS") according to an embodiment of the present invention is shown in FIG. Figure The ATS 10 of the illustrated embodiment generally includes a pre-filter 100, a particulate filter 102, and an activated carbon filter 104. The ATS 10 also includes a fan 56 that is used to draw air from the environment into the ATS 10, move the air through the filter, and return the filtered air to the environment.

[0080] Figure The ATS 10 of the illustrated embodiment includes a control system 12 having an electronic module 14 that provides a “dead side” display 16. The display 16 of this embodiment includes a plurality of display elements 18, which can be selectively illuminated by the control system 12 to provide dynamic content. Some of the display elements 18 may include touch sensors 20 that allow operator input. In this embodiment, the electronic module 14 includes a plurality of light sources 22 such as LEDs, each of which is uniquely assigned to the display element 18. Each light source 22 can be covered by a partition 24 having a shielding layer 26 and a diffusion layer 28. Each touch sensor 20 may also include a capacitive film 30 positioned on the light source 22. In this embodiment, the "dead face" appearance can be created by the translucent front cover 32, which hides the underlying structure and allows the display element 18 to be visible only when lit.

[0081] On the other hand, the front cover 32 is fixed to the ATS 10 housing 34 using a combination of mechanical and magnetic attachment points. Figure The mechanical attachment points of the illustrated embodiment include a lip 36 at the top of the front cover 32 and a pair of magnets 90 at the bottom of the front cover 32. The lip 36 is configured to be captured on a corresponding structure in the ATS housing 110. In use, the combination of mechanical and magnetic attachment points allows the front cover 32 to be easily removed and installed by the operator in a standing position.

[0082] In another aspect, the ATS 10 can accommodate one of a plurality of interchangeable bases 40. Different bases 40 may provide different structures for accommodating the power cord 42 and/or different structures for supporting the ATS 10. in Picture 10 Among them, the ATS 10 includes: a base 40 having a bobbin 44 for manually winding the electric wire 42; and a fixing foot 46. The alternative base 40', 40'' may include a wire retraction assembly with an automatic tensioning spool and/or wheels, casters or rollers (see, for example, Fig. 25). The ATS 10 may also include a one-piece handle 48 that extends substantially along the entire width of the ATS 10 to allow the ATS 10 to be grasped in the center by a single hand or with both hands toward opposite sides. In an alternative embodiment, the base 40'' includes a wire retracting assembly 45'' and a single roller 47'' located in the center. With this alternative base, the ATS 10 can tilt forward on the roller 47'' and use the handle 48 to roll from one position to another.

[0083] On the other hand, the ATS 10 includes a filter holder assembly 50 which facilitates quick and stable installation and removal of the filter(s). Figure The filter holder assembly 50 of the illustrated embodiment includes: a buckle portion 52; and a plurality of buckles 54 which are arranged on the particulate filter and interact with the structure on the ATS housing 110 to The particulate filter is fixed in place in the filter housing 112. The clasp 54 may act in a cam-like manner to pull the particulate filter into the filter housing 112 to promote and airtightness.

[0084] Use directional terms (such as "vertical", "horizontal", "top", "bottom", "upper", "lower", "inner", "inward", "outer", "outward") to base Figure The orientation of the illustrated embodiment is shown to assist in describing the invention. The use of directional terms should not be construed as limiting the invention to any specific orientation or specific orientations.

[0085] B. Overall structure

[0086] As described above, the present invention is described in the context of a room air treatment system. The room air treatment system operates the fan 56 to move air through a series of filters 100, 102, 104 to perform its general functions. Figure The air treatment system 10 of the illustrated embodiment is configured to treat air in three filter stages. The first stage is a course screen pre-filter 100, which is intended to remove large contaminants such as hair, cotton wool fibers, and large dust sticky aggregates (eg, "dust clumps"). The second stage of filtration is the particulate filter 102. Although the specifications of the particulate filter 102 can vary, Figure The ATS 10 shown includes a pleated HEPA filter medium that reduces airborne particles as small as 0.009 microns. The third stage of filtration is the activated carbon filter 104, which includes a granular activated carbon chip bed that has been covered with various catalysts. Various catalysts absorb and convert molecular pollutants, such as formalin, dioxins and ozone. The carbon filter 104 can be manufactured according to the teaching content of "AIR TREATMENT FILTER AND RELATED METHOD" of U.S. Patent 7,316,732 issued to Tayloer, Jr., et al. on January 8, 2008, and this document is incorporated herein in its entirety. .

[0087] in Figure In the illustrated embodiment, various filters 100, 102, 104 are fitted into the filter housing 112. The filter housing 112 generally includes a carbon filter seat and a particulate filter seat. The two seats are substantially rectangular cavities, and they are configured to house a carbon filter and a particulate filter, respectively. The carbon filter seat is slightly smaller in height and width than the particulate filter seat. Therefore, the filter housing 112 has a stepped shape with a shoulder 114 surrounding the carbon filter seat. The carbon filter 104 is first fitted into the filter housing 112. The outer size of the carbon filter 104 is slightly smaller than the size of the portion of the filter housing 112 intended to accommodate the carbon filter 104. Therefore, there is a relatively tight fit between the carbon filter 104 and the filter housing 112, which tends to move air through the carbon filter 104 instead of bypassing the carbon filter 104. The particulate filter 102 is then fitted into the filter housing 112. As described above, the filter housing 112 is stepped and includes a shoulder 114 against which the particulate filter 102 is mounted. The particulate filter 102 may include a face seal (not shown) that engages the shoulder 114 to provide a leak-proof seal between the particulate filter 102 and the filter housing 112. This forces all air moving through the ATS 10 to flow through the particulate filter 102 instead of bypassing the particulate filter 102. Finally, the pre-filter 100 is fitted into the filter housing 112 outside the particulate filter 102. In this embodiment, the pre-filter 100 includes a frame 116 and a layer of filter media (not shown). The frame 116 is configured to be directly press-fitted onto the particulate filter 102. For example, the frame 116 may include fingers 117 that extend inwardly and can engage the particulate filter frame. Except for the scope of the description, the pre-filter 100, the particulate filter 102, and the carbon filter 104 are generally conventional, and therefore will not be described in detail. in spite of Figure The illustrated embodiment includes a three-stage filter arrangement, but the present invention can be incorporated into an ATS with different filtering/processing arrangements.

[0088] In this embodiment, the ATS 10 includes: untreated air inlets 106a-c in the front, which allow air to enter the system; and air outlets 108 in the rear, to return the treated air to the environment. The ATS 10 includes a fan 56 which is housed in the lower rear part of the housing, behind the pre-filter 100, the particulate filter 102, and the carbon filter 104. In operation, the fan 56 operates to draw untreated air from the environment into the ATS 10 through the inlets 106a-c, move the air to sequentially pass through the three filters 100, 102, and 104 to process the air, and then The treated air is released through outlet 108 to return it to the environment. In addition, the size, shape, and structure of the inlet, outlet, and internal flow path are designed to provide ATS with a compact bottom area while still providing quiet and efficient operation. The size, shape and structure of the inlet, outlet and internal flow path can be changed according to the application.

[0089] Figure The illustrated ATS 10 is only exemplary, and the size, shape, and configuration of the ATS may vary with applications.

[0090] C. Control system

[0091] As noted above, the present invention includes a control system 12 that controls the operation of the ATS 10 and provides a user interface for displaying information and receiving input from an operator. The main function of the control system 12 is to control the speed (the ATS 10 operates at this speed to process the air based on sensed parameters or operator input), track the use of filters, set the mode, motor speed, and filter The life of the device is notified to the operator and the operator's instructions are accepted. Generally, the control system 12 changes the rate of air filtration by adjusting the speed of the fan 56. More specifically, the control system 12 controls the operation of the fan 56 based on an automatic or manual control scheme as described in more detail below. As desired, the control subsystem 60 may be configured to slowly switch between multiple fan speeds. For example, in Figure In the illustrated embodiment, the fan speed control is obtained by changing the duty cycle of the power supplied to the fan 56. To provide a slow transition between motor speeds, the control subsystem 60 can transition from one speed to another by slowly increasing or decreasing the duty cycle to move from the current speed to the desired speed. The timing, number, and size of the steps can vary from application to application depending on the desired effect.

[0092] in Figure In the illustrated embodiment, the user interface is implemented as a "dead side" display 16, which is positioned toward the top of the front cover 32 and includes an integrated touch sensor. In use, the display 16 displays information and receives operator input related to the operation and maintenance of the system. E.g, Figure The control system 12 of the illustrated embodiment displays the current environmental dust level and information about the remaining life of various filters. It also provides touch-sensitive buttons, which allow the operator to control the system. The "dead side" display 16 includes a plurality of display elements 18 that are only visible when illuminated. The control system 12 is configured to selectively illuminate individual display elements 18 to provide a dynamic display, which changes dynamically to provide information at any given time and show available control options. in Figure In the illustrated embodiment, the display 16 includes: an information display element 18a, which lights up to provide information about the status of the ATS, or monitored characteristics (such as ambient air quality and filter life; and an input display element 18b, which combines Touch sensors to allow the operator to provide input to the control system. In addition to allowing user input, the input display element 18b can also provide information about the state of the ATS, such as operating mode and fan speed.

[0093] in Figure In the illustrated embodiment, the control system 12 includes an electronic module 14, which is self-contained, in the sense that it includes all the electronic components of the ATS 10, except for the power source that converts AC wall power into the DC power required to operate the ATS 10. Outside of supply components. In this embodiment, the power supply member (not shown) is located in the base 40 of the ATS housing 110. Reference now Figure 4 Schematic display of Figure The electronic module 14 generally includes a control subsystem 60, an LED array 62, a capacitive touch sensor array 64, a dust sensor assembly 66, an RFID subsystem 68, and a wireless communication subsystem 70. The control subsystem 60 includes a control circuit and firmware, which is configured to operate the ATS 10 and coordinate data from various other subsystems (including the capacitive touch sensor array 64, dust sensor 66, RFID subsystem 68, and wireless communication subsystem 70). collect. The various operating modes of the system are described in more detail below. The control subsystem 60 also includes a non-volatile memory, which is used to store pre-programmed operating preset values ​​and historical operating data, such as the life of filters 100, 102, and 104, usage time, counters, and possible operations with the ATS 10 Other variables used in association.

[0094] Figure The electronic module 14 of the illustrated embodiment is in Figure 5- Shown in 7. As shown, the electronic module 14 includes a housing 148 that contains circuits for the control subsystem 60, the RFID subsystem 68, and the wireless communication subsystem 70, as well as the LED array 62, the capacitive touch sensor array 64, and the dust sensor assembly 66. The housing 148 generally includes a base 150 and a cover 152. As noted above, the LED array 62 is configured to provide lighting of the display element 18. More specifically, one or more LEDs 62a are positioned behind each display element 18, including an information display element 18a and an input display element 18b. When it is suitable for displaying the information display element 18 or when the input display element 18b is to be used for input, the LED 62a can be selectively lit by the control subsystem 60. Each LED 62a may include a single LED or multiple LEDs, which provide various lighting options. For example, each LED 62a may include a plurality of LEDs of different brightness to allow the brightness of the display element 18 to vary. As another example, each LED 62 may include LEDs of different colors, and the LEDs of different colors may be lit separately or in combination to produce different colors of illumination. In one embodiment, each LED 62 includes a red LED, a green LED, and a blue LED, which can be illuminated in different combinations or at different brightness levels to provide lighting of substantially any desired color. In another example, each LED 62a may include multiple LEDs with different brightness and different colors. in spite of Figure The illustrated embodiment includes an LED array 62 to provide lighting of the display 16, but the LED array 62 can be replaced or supplemented with other types of light sources (such as OLED, laser, and EL light sources).

[0095] in Figure In the illustrated embodiment, the display 16 is a "dead side" display, in which the unlit display elements 18 are not visible. In this embodiment, the area where the display 16 is located appears to be a simple continuation of the ATS housing 110, and when no display element 16 is illuminated, the ATS 10 does not appear to have a user interface. To generate the desired Figure Each display element 16 includes a partition 74 that shields and diffuses the light generated by the LED 62 below. in Figure In the illustrated embodiment, the display 16 includes two partitions 74 a and 74 b, which respectively cover a plurality of LEDs and provide shielding and light scattering functions for the plurality of display elements 18. The partition 74a is associated with the information display element 18a, and the information display element 18a provides information about the life of the various filters 100, 102, and 104. The partition 74b is associated with an information display element 18a and an input display element 18b, the information display element 18a provides information associated with ambient air quality (for example, based on dust sensor readings), and the input display element 18b is associated with power, mode, and fan speed Enter the association. in Figure In the illustrated embodiment, each separator 74 has a laminated structure, and the laminated structure generally includes a diffusion layer and a shielding layer. The diffusion layer can basically be any material that can diffuse the light generated by the LED. For example, the diffusion layer may include a transparent substrate covered with a translucent film or other translucent coating. Alternatively, the diffusion layer may be a transparent material with a "rough" or textured surface. In another alternative, the diffusion layer can be a piece of translucent material. The shielding layer can basically shield light to generate the desired Figure Any material in a shape, including various opaque and translucent materials, such as ink, paint, film and other adhesive layers. For example, the masking layer can be an opaque film, which defines the desired Figure The shape of the opening(s). It can also include a combination of different materials to provide different visual appearances. For example, the shielding layer may include an opaque area through which no light is expected to pass, a first translucent material through which background light transmission is desired, and a second translucent material through which foreground light transmission is desired. By using translucent materials of different colors or translucent materials with different levels of transparency, the first and second translucent materials can generate areas that appear to be different. The masking layer may be applied to the diffusion layer by printing, thermal bonding, adhesion, or other suitable methods. in Figure In the illustrated embodiment, the shielding layer is placed on the outer surface of the diffusion layer opposite to the LED or other light sources, but it can also be placed elsewhere if desired. Even though Figure In the illustrated embodiment, the diffusion layer and the shielding layer are parts of a single laminated structure, but alternatively, they may be separate members. For example, they may be manufactured separately and placed next to each other during assembly of the display 16.

[0096] in Figure In the illustrated embodiment, the light pipe array 72 has a plurality of independent pipes 72a, and the multiple independent pipes 72a are combined side by side to contain and guide the light from the light source to the corresponding display element. Each light pipe 72a surrounds the light source and provides a reflection pipe that transmits light from the light source 62a to the appropriate part of the partitions 74a, 74b. For example, such as image 3 As shown in the figure, one end of each light pipe 72a can be configured to fit tightly on the LED 62a, and the other end can be joined to the partition 74b, and the size and shape are set to follow the periphery of the associated display element 18. The inner surface of each light pipe 72a may be reflective, scattering, or have other optical characteristics, which are selected to provide the corresponding display element 18 with a desired visual appearance. in Figure In the illustrated embodiment, the electronic module 14 includes two light pipe arrays 72-one for filter life display and the other for the remaining display elements. In this embodiment, each light pipe array 72 is manufactured as a single, integrated unit, thus facilitating the manufacture and assembly of the electronic module 14. For example, each light pipe array 72 may be injection molded, and the inner surface may be coated with a trans or scattering material depending on the desired appearance.

[0097] As noted above, some of the display elements 18 are input display elements 18b, which function as touch sensors to allow the operator to provide input to the control subsystem 60. The input display element 18b can basically be implemented using any touch sensor technology that can be incorporated into a "dead side" display. in Figure In the illustrated embodiment, the input display element 18b is a capacitive touch sensor. In this embodiment, the display 16 includes a capacitive touch sensor array 64 that includes a plurality of individual capacitive film 64 segments. Each segment of the film is associated with a single touch sensor. For example, the segments of each film may be coextensive with the display element 18b associated with the touch sensor. For example, the capacitive film 64 may be integrated into the spacers 74a, 74b, for example, as a separate layer laminated to the diffusion layer 76 and/or the shielding layer 78. Alternatively, the capacitive film 64 may be separated from the spacers 74a, 74b. in Figure In the illustrated embodiment, each segment of the capacitive film 64 includes a tongue 65 or other features for connecting to the electronic module 14, and the lower substrate 67 provides a common ground plane. The monitoring, control, and operation of the capacitive touch sensor may be generally conventional, and therefore will not be described in detail. It is only necessary to point out that the control subsystem 60 can identify the contact by sequentially reading the values ​​from the separated capacitive membrane segments, and determine that the contact has occurred when those current readings match the predetermined values ​​of the typical contact.

[0098] As described above, Figure The electronic module 14 of the illustrated embodiment includes a dust sensor assembly 66 that allows the control system 12 to determine the level of airborne contaminants. In this embodiment, the dust sensor assembly 66 includes a dust sensor 80, a sensor inlet 82, a sensor duct 81, a sensor outlet 86, and a pair of sensor pads 88. In this embodiment, the dust sensor assembly 66 uses the partial vacuum generated by the fan 56 to pull ambient air through the dust sensor 80. After passing through the sensor 80, the air is processed and returned to the environment. As shown, the sensor outlet 86 communicates with the air flow path through the ATS 10 and is placed upstream of the filters 100, 102, and 104. The sensor 80 is mounted on the electronic module 14 and is properly aligned with the sensor outlet 86. The sensor inlet 82 is placed in the cover 152 of the electronic module 14 to provide access to the sensor duct 84 for ambient air. The sensor inlet 82 may include a filter material (not shown), which is selected to prevent large particles (such as hair, lint, and dust sticks) from fouling the dust sensor 80. The filter material can be replaceable or cleanable. The sensor conduit 84 is placed between the sensor 80 and the sensor inlet 82 to provide a flow path to the sensor 80. The sensor gasket 88 is located between the dust sensor 80 and the sensor outlet 86 and between the dust sensor 80 and the sensor duct 84. In operation, the fan 56 pulls air from the environment, passing through the sensor inlet 82, the sensor duct 84, the dust sensor 80, and the sensor outlet 86 in sequence. When the air passes through the dust sensor 80, known techniques and devices are used to measure the dust level in the air.

[0099] Although not shown, the ATS 10 may also include a sensor that can provide readings as an indication of the presence or absence of the front cover 32. For example, in Figure In the illustrated embodiment, the ATS 10 includes a Hall effect sensor, which is placed close to one of the magnetic sensors toward the bottom of the ATS 10. When the front cover 32 is removed, the absence of the magnet will change the reading provided by the Hall effect sensor. Alternatively, a separate interlocking magnet (not shown) can be incorporated into the front cover 32, located close to the electronic module 14, so that a Hall effect sensor, a reed switch or other magnetic field sensor mounted on the electronic module 14 can be used to determine the front The cover 32 is present or absent. Information about the state of the front cover 32 may be used by the control subsystem 60 to influence the operation of the system. For example, in one embodiment, when the front cover 32 is removed, the control subsystem 60 can automatically turn off the fan 56 or change the function. As another example, when the front cover 32 is removed, the control subsystem 60 may change the parameters used in determining whether a touch has occurred. This will allow the touch sensor to work equally well regardless of whether the front cover 32 is in place. As yet another example, when the front cover 32 is removed, the control subsystem 60 may enter an alternative mode of operation. This may cause the control subsystem 60 to change the display element 18, including the available input display element 18b.

[0100] The control system 12 may also include an RFID subsystem 68 configured to work with corresponding RFID tags in replaceable filters in the ATS 10 (eg, particulate filter 102 and/or activated carbon filter 104). The RFID subsystem 68 is generally conventional, and therefore will not be described in detail. It only needs to be pointed out that the control subsystem 60 can collect, accumulate or store the filter life, use time, time elapsed after installation, total effective consumption (ie, motor speed multiplied by the use time), and the Other data in the RFID tag. When the filter is installed, the RFID reader/writer can read any data that has been stored in the RFID tag, such as the filter life, the total amount of time the filter has been installed in any system, and the total filter life Effective consumption. In this way, the system can provide proper tracking even when the filter is moved from one ATS to another. The RFID tag embedded in the filter can also include a serial number, which can be used to ensure the authenticity of the filter. For example, the control system 12 may store a table of valid serial numbers and compare serial numbers based on the table, or if it has network capabilities, it has the ability to compare the serial numbers with a table of valid serial numbers stored on the Internet. The filter usage information can be used to provide a display of the remaining filter life and provide a reminder when the filter needs to be replaced. The RFID subsystem 68 can also be used to determine that the filter has been removed. This information can help control or maintain statistics related to the use of ATS 10. For example, the control subsystem 60 may be configured to turn off the fan when the particulate filter 102 and/or the carbon filter 104 are removed. As another example, when one or both of the filters are removed, the control subsystem 60 may enter the service mode. When in the service mode, the control subsystem 60 displays information technology information and/or provides control options specific to the mode. To help ensure proper alignment between the RFID reader/writer in the ATS 10 and the RFID tag in the carbon filter 104, the carbon filter 104 can be bonded to the filter housing 112 so that the carbon filter 104 can only be installed in Provide aligned orientation. For example, the bottom of the particulate filter 104 may include a key groove (not shown), and the filter housing 112 may include a corresponding key (not shown). When the RFID reader/writer is placed in the center in the left/right direction, the key can be positioned in the center, because it will be independent of which filter surface is facing inward. When the RFID reader/writer is not centered, it may help to provide an asymmetric key arrangement to ensure that the desired filter surface faces inward.

[0101] As described above, the control system 12 may include a wireless communication subsystem 70, which allows the control subsystem to communicate wirelessly with other electronic devices, such as smart phones, tablet computers, personal computers, local wireless routers, broadband wireless Routers and other communication devices. in Figure In the illustrated embodiment, the wireless communication subsystem 70 allows the ATS 10 to exchange information with a remote device and receive instructions from the remote device, such as a smart phone or tablet device running a dedicated application process. For example, an application may be provided that allows an operator to input an ATS instruction on an electronic device, the electronic device wirelessly communicates to the control subsystem 60, and the control subsystem 60 executes the ATS instruction. As another example, the information collected by the ATS 10 may be communicated to an electronic device for display in the application. on Figure In an exemplary embodiment, this may include filter life information, operation mode information, motor speed information, and ambient air quality information obtained using a dust sensor for each filter. The wireless communication subsystem 70 can use basically any wireless communication technology and protocol. For example, in Figure In the illustrated embodiment, the wireless communication subsystem 70 may have Bluetooth and/or WiFi capabilities.

[0102] The control system 12 may be configured to implement various control schemes. In each case, the control system 12 may be configured to provide a dynamic display 16 in which, based on changing variables (such as the operating mode and the value of the monitored parameter), the display element 18 is illuminated and the touch sensor is activated. in Figure In the illustrated embodiment, the control system 12 implements a control scheme. The control scheme has four common operating modes, including: "smart" mode (or automatic mode), where the control system is automated based at least in part on dust sensor readings; and "manual" mode , Where the operator controls the fan speed; "turbo" ("turbo") mode, where the fan 56 is temporarily operated at high speed; and "night" mode, where the display 16 is operated differently to limit night lighting. Related to this control scheme, the display 16 can display various information display elements 18a and input display elements 18b (see Figure 5 And 9A). in Figure In the illustrated embodiment, each display element 18 includes two LEDs of different colors and/or different intensities. One of the two LEDs is used to light up the display element in the "present" state (for example, a darker LED or a first color, such as a softer color). This lit state is used to make the display element 18 on the display 16 visible, while providing a visual indication that it has not been selected or is not active. The other LED is used to light up the display element in the "on" state (for example, a brighter LED or a second color, such as a more vivid color). The "on" state is used to indicate that the display element is "on" or "active". The number, type, structure, structure, and operation of the display elements 18 can vary with different applications, and most of them depend on the control scheme implemented by the control system 12.

[0103] in Figure In the illustrated embodiment, the information display element 18a includes: an information display element 200, which displays the life of a pre-filter; a set of information display elements 202, which displays the life of a particulate filter; a set of information display elements 204, which displays the life of a carbon filter ; And a set of information display elements 206, which display the environmental dust level (see Figure 9B ). The input display element 18b generally includes a power input display element 208, a "smart" mode input display element 210, a "turbine" mode input display element 212, a "night" mode input display element 214, and a plurality of fan speed input display elements 216 ( see Figure 9B ).

[0104] in Figure In the illustrated embodiment, various filter life indicators 200, 202, and 204 are placed in the front cover 32 and the ATS housing 110. Figure Between the standard display (see Figure 9B ). These ones Figure The mark can help identify which filter life display is associated with which filter. in Figure In the illustrated embodiment, the front cover and the ATS housing Figure The indicator is statically lit by a white LED operating at 50% brightness.

[0105] in Figure In the illustrated embodiment, the filter life indicator 200 for the pre-filter includes an information display element 200. When the pre-filter does not require maintenance, the information display element 200 can be lit in the "show" state, and when the pre-filter When maintenance is required (such as cleaning or replacement), the information display element 200 can be lit in the "on" state. The "show" state can be produced by statically lighting a green LED. The "on" state can be provided by flashing the red LED.

[0106] in Figure In the illustrated embodiment, the filter life indicator 202 for the particulate filter 102 includes four information display elements 18a, each representing a quarter of the filter life. When the filter life display is turned on, all four display elements 18a are illuminated. The number of elements 18a illuminated in the "on" state represents the remaining filter life. In the "show" state, the remaining elements 18a are illuminated to provide a visual reminder of the filter life expressed in quarters. The number of segments can vary depending on the application as desired. For example, additional granularity can be provided by increasing the number of information display elements 18a associated with the filter life display 202. in Figure In the illustrated embodiment, the filter life indicator 202 for the particulate filter incorporates color LEDs to assist in displaying the filter life as follows:

[0107] 75-100% lifespan-all four segments light up green at 100% brightness

[0108] 50-75% life-the bottom three segments light up as green at 100% brightness, and the top segment lights up as white at 50% brightness

[0109] 25-50% lifespan-the bottom segment lights up as amber with 100% brightness, and the top three segments light up as white with 50% brightness

[0110] 1-10% lifespan-the bottom segment is lit with 100% brightness as red, and the top three segments are lit with 50% brightness as white

[0111] 0% life-the bottom segment flashes red at 100% brightness, and the top three segments light up white at 50% brightness

[0112] in Figure In the illustrated embodiment, the filter life indicator 204 for the carbon filter 104 is basically the same as the filter life indicator 202 for the particulate filter 120, and includes four display elements 18a, which can be illuminated using the same method described above The status is "showing" or "on".

[0113] in Figure In the illustrated embodiment, the dust level display 206 includes a plurality of individual information display elements 18a, which can be illuminated in the "display" or "on" state. When the dust level display 206 is displayed, the number of information display elements 18a lit in the "on" state represents the measured dust level, and the other information display elements 18a are lit in the "show" state. This allows the operator to better understand the dust level by comparing the ratio of the "on" segments to the total number of segments. in Figure In the illustrated embodiment, the dust horizontal segments are grouped into three groups, where the LEDs of a single group are associated with each group of three segments. therefore, Figure The dust concentration display 206 of the illustrated embodiment has 15 segments, but only has six different settings (ie, 0 segment, 3 segment, 6 segment, 9 segment, 12 segment, and 15 segment). in Figure In the illustrated embodiment, the dust density display 206 is combined with color LEDs to assist in the identification as follows:

[0114] Level 1-the first segment is lit with 100% brightness as green, and the remaining segments are lit with 50% brightness as white

[0115] Level 2-the first two segments are lit with 100% brightness as amber, and the remaining segments are lit with 50% brightness as white

[0116] Level 3-The first three segments are lit with 100% brightness as amber, and the remaining segments are lit with 50% brightness as white

[0117] Level 4-the first four segments are lit with 100% brightness as red, and the remaining segments are lit with 50% brightness as white

[0118] Level 5-all five segments light up in red at 100% brightness

[0119] In this embodiment, the fan speed display element 18b performs the dual function of displaying the current fan speed and receiving input from the touch sensor to allow the operator to manually set the fan speed. Like the dust level indicator, the fan speed indicator includes a plurality of individual display elements 18, which have two LEDs, which can be selectively lit to indicate a "show" state or an "on" state. Unlike the dust level display, the fan speed display is also a touch sensor array, which can be used by the operator to manually select the fan speed. When the fan speed is displayed, the number of fan speed input display elements that are lit in the "on" state is selected to represent the fan speed, and other fan speed input display elements are lit in the "display" state, so that the operator can see the available Fan speed options, and compare the ratio of the "on" section to the "show" section to understand the current fan speed. in Figure In the illustrated embodiment, the "show" state may be provided by statically lighting a white LED with 50% brightness. The "on" state can be provided by statically lighting a blue LED at 100% brightness. To provide a touch sensor, each fan speed display element 18b includes an associated section of capacitive film. As noted above, the control subsystem 60 monitors the capacitive membrane segments to determine when a touch has occurred. When the touch occurs, the control subsystem 60 can adjust the fan speed to match the selected setting.

[0120] in Figure In the illustrated embodiment, when in the “display” state, the power input display element 208 is lit with 100% brightness as red, and when in the “on” state, it is lit with 100% brightness as white. When in the “display” state, the “smart” mode input display element 210 is lit with 50% brightness as white, and when in the “on” state, it is lit with 100% brightness as blue. When in the “show” state, the “turbo” mode input display element 212 is lit with 50% brightness in white, and when in the “on” state, it lights with 100% brightness in blue. When in the “show” state, the “night” mode input display element 214 is lit with 50% brightness as white, and when in the “on” state, it is lit with 50% brightness as red.

[0121] As described above, Figure The control system 12 of the illustrated embodiment implements a control scheme with four different operating modes: "smart" mode (or automatic mode), "manual" mode, "turbo" mode, and "night" mode. This control scheme will refer to Figure 13 To describe. During the "smart" mode of operation, the control subsystem 60 evaluates dust sensor readings and determines fan speed based on these readings. This allows the ATS 10 to adapt to the level of airborne dust in a changing environment. In this mode, the operator has the option to enter turbo mode, night mode, manual mode, or turn off the ATS power supply. Thus, the turbo mode input display element, the night mode input display element, the various fan speed input display elements, and the power input display element are lit. The turbo mode input display element and the night mode input display element light up in the "show" state. The smart mode input display element and the power input display element are lit in the "on" state. When the system has been operated in the smart mode, if the smart mode input display element is touched, the system will switch to the manual operation mode. The fan speed input display element is lit according to the lighting method described above to show the current fan speed and available manual adjustment options. In addition, in the smart mode, the dust level information display element is lit according to the lighting method explained above to show the real-time dust level. In smart mode, each time the user interacts with the ATS 10, the filter life indicator lights up for a specific time. For example, every time the operator interacts with the touch sensor in the display 16, the control subsystem 60 may light up the filter life display for 15 seconds. In addition, whenever and whenever the filter needs attention (for example, any filter needs to be cleaned or replaced), the filter life indicator can be illuminated.

[0122] When the operator touches the fan speed input display element 18b, the control subsystem enters the manual mode (or direct mode). Once in the manual mode, the control subsystem 60 operates the fan 56 at the speed selected by the operator. In this mode, the operator has the following options: enter turbo mode, night mode, smart mode, adjust fan speed or turn off ATS power. Thus, the turbo mode input display element, the night mode input display element, the smart mode input display element, the various fan speed input display elements, and the power input display element are lit. The smart mode input display element, the turbo mode input display element, and the night mode input display element are lit in the "show" state. The power input display element lights up in an "on" state. The fan speed input display element is illuminated to display the current fan speed and available manual adjustment options according to the lighting method described above. In addition, the dust level information display element is lit to display the real-time dust level according to the lighting method explained above. In this mode, each time the user interacts with the ATS 10, the filter life indicator lights up for a specific time. For example, each time the operator interacts with the touch sensor in the display 16, the control subsystem 60 may light up the filter life display for 15 seconds. In addition, whenever and whenever the filter needs attention (for example, any filter needs to be cleaned or replaced), the filter life indicator can be illuminated.

[0123] When the operator touches the turbo mode input display element, the turbo mode is entered. Once in the turbo mode, the control subsystem 60 operates the fan 56 at the highest speed setting (or some other predetermined speed setting) for a preset time (for example, 30 minutes), and then automatically returns to the previous operation mode. The turbo mode can be interrupted by the touch of a button, and the system can switch out of the turbo mode before the default time expires. In this mode, the operator has the following options: touch the smart mode input display element to enter the smart mode, touch the fan speed input display element to adjust the fan speed, and enter the manual mode or touch the power input display element to turn off the ATS power supply. Further, the operator has the following options: Touch the turbo mode input display element to cause the system to immediately return to the previous setting. Thus, the turbo mode input display element, the smart mode input display element, the various fan speed input display elements, and the power input display element are lit. The turbo mode input display element and the power input display element are lit in the "on" state, and the smart mode input display element is lit in the "display" state. The fan speed input display element is lit according to the lighting method described above to display the current fan speed and available manual adjustment options. In addition, the dust level information display element is lit according to the lighting method described above to display the real-time dust level. In this mode, each time the user interacts with the ATS 10, the filter life display is lit for a specific time. For example, each time the operator interacts with the touch sensor in the display 16, the control subsystem 60 may cause the filter life display to light up for 15 seconds. In addition, whenever and whenever the filter needs attention, the filter life indicator can be turned on.

[0124] When the operator touches the night mode input display element, the night mode is entered. Once in the night mode, the control subsystem 60 continues to operate the ATS 10 in the same mode, but the displayed content is reduced to minimize light emission. In this mode, the operator has the following options: touch the night mode input display element to cancel the night mode (ie, re-enable the display in accordance with the current operating mode), or touch the power input display element to turn off the ATS. In the night mode, only the night mode input display element and the power input display element are lit, and both of them are lit in the "on" state. In an alternative embodiment, the control subsystem 60 may be configured to re-enable the display 16 (in whole or in part) when the operator approaches the immediate vicinity of the display 16. For example, the control subsystem 60 can use the capacitive touch sensor array 64 to sense the proximity of the operator and use it as a trigger to light up all the input display elements 18b so that the operator has complete control. If the operator does not input an instruction within a specific time (for example, 15 seconds) after the display 16 has been re-enabled, the control subsystem 60 can return the display 16 to the night mode.

[0125] When the ATS 10 is plugged in but not powered on, the control subsystem 60 lights up the power input display element in the "show" state. This allows the operator to see the power control element. Once the power button is touched, the control subsystem 60 can start the system in a smart mode or a manual mode. When activated in manual mode, the control subsystem 60 obtains the dust sensor reading, determines an appropriate fan speed based on the dust sensor reading, and then loads the fan at the determined speed. All these steps are carried out automatically, without operator input. When activated in manual mode, the control subsystem 60 does not activate the fan 56 until an operator input (for example, by touching one of the fan speed input display elements 18b) to instruct to do so.

[0126] The control scheme described above is only exemplary. The control system 12 may implement a variety of alternative control schemes. For example, an alternative control scheme is Figure 14 Shown in. Except as described herein, this alternative control scheme is basically the same as the control scheme discussed above. To implement this control scheme, the display can include additional mode control buttons ( Figure 14 Won the bid as "User"). With this control scheme, the operator needs to use the mode control button to switch between different operating modes. For example, the operator needs to touch the "user" mode input display element to enter the manual operation mode (rather than simply touch the fan speed input display element). Once in manual mode, the operator can control the fan speed by touching the desired fan speed input display element. As another example of this control scheme, the operator may leave the turbo mode only by touching the turbo mode input display element or allowing a preset time to elapse. Similarly, the operator can leave the night mode only by touching the night mode input display element.

[0127] Another alternative control scheme is Figure 15 Shown in. In this embodiment, except for the parts as described herein, the control scheme is basically the same as the first control scheme described above. In order to implement this control scheme, the display includes additional mode control buttons associated with the "option" mode ( Figure 15 Won the mark as "option"). When the system is powered on, it starts the "smart" mode, and the fan speed is automatically set based on the input from the dust sensor. To provide additional control options, the "Options" mode button must be touched. In the "smart" mode, the power input display element is lit in the "on" state, the smart mode input display element is lit in the "on" state, the option mode input display element is lit in the "display" state, and the dust level indicator is lit Light up. Turbine mode input display element, night mode input display element and fan speed display are turned off. In the smart mode, the operator can touch the power input display element to turn off the system power, or touch the option mode input display element to switch to the option mode.

[0128] Once in the "smart" mode, the power input display element lights up in the "on" state, the smart mode input display element lights up in the "on" state, the option mode input display element lights up in the "on" state, and the dust level indicator And the fan speed display is lit. In addition, the turbo mode input display element and the night mode input display element are lit in the "show" state. In the option mode, the operator can touch the power input display element to turn off the system power, touch the smart mode input display element to return to the smart mode, touch the option mode input display element to return to the smart mode, and touch the turbo mode input display element to enter In turbo mode, touch the night mode input display element to enter the night mode, or touch the fan speed input display element to select the fan speed and enter the manual mode. If no button is touched within a certain period of time (for example, 60 seconds), the system can automatically switch back to the smart mode.

[0129] Once in the "manual" mode, the power input display element lights up in the "on" state, the option mode input display element lights up in the "show" state, the dust level indicator is lit and the fan speed indicator is lit. In addition, the smart mode input display element, the turbo mode input display element, and the night mode input display element are turned off. In manual mode, the operator can touch the power input display element to turn off the system power, touch the option mode input display element to enter the "manual option" mode, or touch the fan speed input display element to select the fan speed. Although the system remains in manual mode, it will continue to operate the fan at the speed selected by the operator.

[0130] Once in the "manual option" mode, the power input display element and the option mode input display element are lit in the "on" state, and the dust level indicator and fan speed indicator are lit. In addition, the smart mode input display element, turbo mode input display element, and night mode input display element are lit in the "show" state. In manual mode, the operator can touch the power input display element to turn off the system power, touch the smart mode input display element to return to smart mode, touch the option mode input display element to return to manual mode, and touch the turbo mode input display element to enter turbo mode , Touch the night mode input display element to enter the night mode, or touch the fan speed input display element to select the fan speed and return to manual mode. If no button is touched within a certain period of time (for example, 60 seconds), the system can automatically switch back to the smart mode. If no button is touched within a certain time (for example, 60 seconds), the system can automatically switch back to manual mode.

[0131] Once in the "turbine" mode, the control subsystem operates the fan at the highest speed setting (or some other predetermined speed setting) for a predetermined time (for example, 30 seconds), and then automatically returns to the previous operating mode. The turbo mode can also be interrupted by the touch of a button. In this case, the system can switch to the turbo mode before the default time expires. The turbo mode input display element and the power input display element are lit in the "on" state. The fan speed indicator and dust level indicator are also illuminated. In addition, the smart mode input display element, the option mode input display element, and the night mode input display element are turned off. In this mode, the operator has the following options: touch the turbine mode input display element to return to the previous operation mode, or touch the power input display element to turn off the ATS power supply.

[0132] Once in the "night" mode, the control subsystem continues to operate the ATS in the same operating mode, but the displayed content is reduced to minimize light emission. In the night mode, the night mode input display element is lit in the "display" state, and the power input display element is lit in the "on" state. The remaining display elements are turned off. In this mode, the operator has the following options: touch the night mode input display element to disable the night mode (ie, re-enable the display according to the current operation mode) or touch the power input display element to turn off the ATS.

[0133] D. Front cover

[0134] As described above, the ATS 10 includes a removable front cover 32 that closes the front of the ATS 10 and covers the filters 100, 102 and 104, the electronic module 14 and the fan 56. Figure The front cover 32 of the illustrated embodiment defines a central entrance 106a and is offset from the ATS housing 110 so that they cooperatively define side entrances 106b-c. The inlet corrector 98 can fit into the central inlet 106a. in Figure In the illustrated embodiment, the front cover 32 is convex, creating a relatively large head space between the rear surface of the front cover 32 and the installed filter. This may allow air to enter the ATS 10 through the central inlet 106a more freely.

[0135] In this embodiment, the front cover 32 also forms the interface surface of the “dead side” display 16. In this way, the front cover 32 of this embodiment is translucent at least in the areas where the electronic module 14 covers the LED array 62, the light pipe array 72, and the partitions 74a and 74b (for example, it is not completely transparent or completely opaque with respect to visible light) . The front cover 32 may be made of a translucent polymer (e.g., molded thermoplastic) with a lacquer or film coating that provides the desired opacity. In one embodiment, the front cover 32 is covered by an in-mold film process. In order to promote the proper appearance of the "dead side" display, the paint or film coating applied to the front cover 32 may need to be carefully controlled. Alternatively, the front cover 32 may be made of a translucent material, such as a molded translucent thermoplastic.

[0136] in Figure In the illustrated embodiment, the front cover 32 is configured to allow one-handed removal and installation. The front cover 32 includes a mechanical attachment point at its top, and a pair of magnetic attachment points at its bottom. in Figure In the illustrated embodiment, the mechanical attachment points are registered on the electronic module 14. This helps ensure proper alignment between the components of the front cover 32 and the underlying display 16, which can help ensure the proper appearance and operation of the "dead side" display. Even though Figure In the illustrated embodiment, the mechanical attachment point is not registered with the electronic module 14, but it may not be registered with other structures in an alternative embodiment.

[0137] Referring now to Figures 19A and 19B, Figure The mechanical attachment point of the illustrated embodiment includes a lip 36 that extends from the front cover 32 and is configured to snap onto the electronic module 14. in Figure In the illustrated embodiment, the lip 36 extends substantially along the entire width of the electronic module 14, except that it may include a gap 37 aligned with the dust sensor inlet 82 (see figure 2 ). The lip 36 of this embodiment is oriented at an angle that allows the lip 36 to snap onto the electronic module 14 when the front cover 32 is put in place. This allows the front cover 32 to be detached from the ATS housing 110 by sliding the front cover 32 upward relative to the ATS housing 110. This upward sliding action not only disengages the lip 36 from the electronic module 14, but also simultaneously disengages the magnet 90 from the attachment plate 92 in the ATS housing 110 (as discussed below), thereby facilitating removal. The size, shape, and configuration of the lip 36 can vary with the application. In an alternative embodiment, the lip may be substantially replaced by any other male or female structure capable of engaging with the electronic module 14.

[0138] In this embodiment, the front cover 32 includes two magnetic attachment point positions facing opposite sides of the bottom of the front cover 32. Each magnetic attachment point includes a magnet 90 carried by the front cover 32, and a magnetic attraction plate 92 on which the ATS housing 110 is mounted (see FIGS. 20A and 20B). The magnet 90 may be a dish-shaped rare earth magnet which is installed in a corresponding insertion hole 94 protruding from the rear of the front cover 32. The size and shape of the board 92 can be determined such that when the front cover 32 slides up a sufficient distance to clear the lip 36 from the electronic module 14, the magnet 90 is substantially separated from the board 92. The number, size, shape, and configuration of the magnets and plates can vary with the application as desired. For example, stronger magnets or more magnetic attachment points can be used to increase the force required to remove the front cover 32.

[0139] In use, the front cover 32 can be removed and installed in various ways. One option for removing the front cover 32 is shown in Figure 17A. With this option, the front cover 32 is slid up enough relative to the ATS housing 110 so that the lip 36 leaves the electronic module 14, and then the top of the front cover 32 is tilted away from the ATS housing 110 to overcome the magnetic attachment point Any remaining magnetic attraction at the place. The front cover can be installed using essentially the reverse process. Another option for removing the filter is shown in Figure 17B. With this option, the operator extends downward and pulls the bottom of the front cover 32 away from the ATS housing 110 until the magnet 90 is separated from the plate 92. Then, the operator lifts the front cover 32 a sufficient distance to allow the lip 36 to leave the electronic module 14. The front cover 32 can be installed by draping the top of the front cover 32 above the electronic module 14 and then screw the bottom of the front cover 32 toward the ATS housing 110 until the magnet 90 engages the plate 92.

[0140] The front cover 32 may include interlocking magnets (not shown) that allow the control subsystem 60 to be recognized when the front cover 32 is installed and when its front cover 32 is removed. The interlocking magnet can be placed toward the top of the front cover 32, where it can be sensed by a Hall effect or other magnetic field sensor incorporated into the electronic module 14. As an alternative to using separate interlocking magnets, the ATS 10 may include a Hall-effect sensor (or other magnetic field sensor) that is positioned to allow it to be based on the magnet 90 used to attach the front cover 32 to the ATS housing 110 To identify the presence or absence of the front cover.

[0141] If desired, the electronic module 14 may include LEDs or other light sources, which may be joined to provide illumination, which may be visible through the central entrance opening 106a and/or at the sides of the front cover 32. This lighting may be provided as accent lighting, or may have a functional purpose. For example, when the ATS 10 is operating correctly and does not require maintenance, the control system 12 may provide blue lighting or no lighting, and when operator intervention is required, it may provide red lighting. This can happen when the filter needs to be replaced or cleaned or there is a system error. When there is a specific emergency, the red lighting can flash.

[0142] As noted above, the front cover 32 incorporates an appropriate level of opacity to create a "dead side" display 16. As an alternative, the "dead side" display may be produced by a transparent component placed under the front cover 32 (such as a separate panel placed on the electronic module 14). In such embodiments, the front cover 32 may be transparent or sufficiently translucent to allow the underlying "dead side" display to be seen through the front cover 32.

[0143] E. Mobility characteristics

[0144] in Figure In the illustrated embodiment, the ATS 10 may be configured to interface with one of a plurality of interchangeable bases 40. in Figure In the illustrated embodiment, the bases 40, 40' and 40" are fixed to the ATS housing 110 using bolts or other fasteners. The number and position of the fasteners can vary depending on the application. As an alternative or in addition to tightening In addition to the firmware, the ATS housing 110 and the bases 40, 40' and 40" can be provided with snap features that allow the desired base to be snap-fitted to the ATS 10.

[0145] Different bases 40 may provide different configurations for receiving the power cord 42 and/or different configurations for supporting the ATS 10. Figure 21 ATS 10 with three alternative bases 40, 40' and 40" is shown in and 22. Generally, the base 40 has a spool 44 for manually winding the electric wire 42', and a plurality of fixed feet 46; the base 40' has a spool 44' for manually winding the electric wire 42', and A plurality of casters 46'; and the base 40" includes a wire recovery assembly 45 with an automatic take-up reel (not shown), and a combination of a fixed foot 46" and a roller 47". Although attached Figure An embodiment of a spool extending laterally across a portion of the ATS housing 110 is shown, but the term "spool" is intended to include any independent feature or combination of features, which is provided for the power cord 42 to be wound The structure above it.

[0146] in Figure In the illustrated embodiment, the ATS 10 may also include a handle 48 placed at the top rear of the ATS housing 110. The handle 48 of this embodiment extends substantially along the entire width of the ATS 10 to allow the ATS 10 to be grasped in the center with one hand, or with both hands toward the opposite side. In this embodiment, the handle 48 may include: a relatively deep central pocket that is deep enough to receive the operator’s fingers up to about two knuckles; and a relatively shallow side pocket that is deep enough to receive the operator’s Fingers up to approximately the first knuckle. The handle 48 may be a one-piece member that is fixed to the ATS housing 110 by fasteners, for example, or it may be formed integrally with other parts of the ATS housing 110.

[0147] Regarding the base 40, the handle 48 can be used to lift the ATS 10 when the ATS 10 is moved from one place to another. Regarding the base 40', when the ATS is to be slid from one place to another on the casters 46', the handle can be used to grasp the ATS. Regarding the base 40", the handle 48" can be used to tilt the ATS 10 forward onto the roller 47" and slide the ATS 10 from one place to another.

[0148] F. Filter holder assembly

[0149] As described above, the ATS 10 includes a pre-filter 100, a particulate filter 102, and a carbon filter 104 that are removably fitted into the filter housing 112. The system includes a filter holder assembly 50, which facilitates fast and stable filter installation and removal. in Figure In the illustrated embodiment, the filter holder assembly 50 includes a buckle part 52 and a pair of fasteners 54 integrally integrated into the frame of the particulate filter 102, and a locking protrusion 126 integrally integrated into the ATS housing 110. Because the pre-filter is fixed to the particulate filter 102 and the particulate filter 102 covers the carbon filter 104, the filter holder assembly 50 effectively holds all three filters 100, 102, and 104. in Figure In the illustrated embodiment, the fasteners 54 are configured such that when they are closed, they pull the particulate filter 102 tightly into the filter housing 112. This helps compress the face seal 118 on the particulate filter 102 against the shoulder 114 to promote an airtight seal.

[0150] Reference now Figure 29B , The buckle portion 52 is provided at the center of the bottom of the frame of the particulate filter 102. The fastening part 52 of this embodiment is integrally molded with the frame of the particulate filter 102, but alternatively, it may be separately formed and connected to the frame. Figure The buckle portion 52 of the illustrated embodiment has a quarter-circle cross section, which can facilitate installation and removal from the corresponding gap 120 in the filter housing 112. The number, size, shape, and configuration of the buckle portion 52 and the gap 120 can be changed according to the application as desired. For example, the positions of the buckle portion 52 and the gap 120 may be reversed, where the buckle portion extends from the filter housing 122 and the gap is defined in the particulate filter 102.

[0151] May be like Figure 29A with 29B As best shown in, the buckle 54 is rotatably mounted to the opposite side of the frame of the particulate filter 102. Each buckling part 54 may include a handle 122 and a hook 124. The handle 122 is configured to provide a structure that can be used by the operator to turn the clasp 54. The hook 124 is configured to engage the locking projection 126 when the clasp 54 is rotated into the closed position. The hook 124 and the locking protrusion 126 are configured such that when the fastener 54 is close to the closed position, there is a short distance interference between the two. This creates a snap fit, which helps to ensure that the clasp 54 is secured in the closed position. Further movement toward the closed position causes the hook 124 to bend, creating resistance to further movement toward the closed position. When the clasp 54 continues toward the closed position, the hook 124 leaves the intersection area and begins to return to its original unbent state. This pushes the clasp 54 the remaining distance into the closed position. in Figure In the illustrated embodiment, the position and configuration of the hook 124 relative to the pivot position are selected such that the clip 54 provides a cam-like function, and when the clip 54 is closed, the particulate filter 102 is pulled into the filter housing 112. The operation of the clasp 54 is shown in Figures 30A-D. In Figure 30A, the clasp 54 is shown in the open position. In this position, the hook 124 is disengaged from the locking protrusion 126. Figure 30B shows the clasp 54 in a partially closed position. As can be seen, the hook 124 has moved into engagement with the locking protrusion 126. In this position, the particulate filter 102 has been partially drawn into the filter housing 112, as can be seen by comparison with the reference line R. Figure 30C shows the clasp 54 moving further towards the closed position. See here Figure In this case, the hook 124 has engaged the locking protrusion 126 and has begun to bend outwardly away from the locking protrusion 126 due to the intersection between the two. As can be seen, the particulate filter 102 has been further drawn into the filter housing 112. In Figure 30D, the clasp 54 is in the closed position. In this position, the hook 124 has moved beyond the intersection area and is fully engaged with the locking protrusion 126. The particulate filter 102 has been completely pulled into the filter housing 112.

[0152] The removal of the particulate filter 102 is described in connection with FIGS. 28A-D. the first Figure In the illustration, the front cover 32 and the pre-filter 100 are removed to provide access to the particulate filter 102 (see Figure 28A). in Figure In the illustrated embodiment, it is not necessary to remove the pre-filter 100 from the particulate filter 102. Next Figure In the illustration, each buckle 54 has been rotated from the closed position to the open position (see Figure 28B). This disengages the hook 124 from the locking protrusion 126 in the filter housing 112. next Figure The illustration shows the top of the particulate filter 102 inclined away from the filter housing 112 (see Figure 28C). Last Figure The illustration shows that the filter 102 is lifted from the filter housing 112 to disengage the buckle portion 52 from the gap 120 (see FIG. 28D). The particulate filter 102 can be installed using a substantially reverse process.

[0153] The design and structure of the buckle can vary depending on the application. Alternative fasteners 54' and 54" are shown in Figures 31A-D and 32A-D. In these alternative embodiments, the filter holder assembly further includes locking pins 128', 128", which secure the fasteners 54', 54" in the closed position. The locking pins 128', 128" protrude from the particulate filter 102, but can alternatively protrude from the filter housing 112 if desired. The optional fastener 54' includes a tooth portion 130' which extends from the fastener 54 The outer edge of the'protruding'. The tooth 130' is configured to engage the corresponding recess 132' in the locking pin 128' when the clip 54' is in the closed position. The tooth 130' and the locking pin 128' together hold the clip 54 'The buckle is locked in the closed position. The operation of the clip 54' is shown with reference to Figures 31A-D. In Figure 31A, the clip 54' is shown in the open position. In this position, the hook 124' The locking projection 126' is disengaged. Figure 31B shows the clip 54 in a partially closed position. As can be seen, the hook 124' has moved into engagement with the locking projection 126'. In this position, the particulate filter 102 is Partially pulled into the filter housing 112, as can be seen by comparing with the reference line R. Figure 31C shows the fastener 54' moved further towards the closed position. Figure In this case, the hook 124 ′ has further engaged the locking protrusion 126 ′, and further pulls the filter 102 into the filter housing 112. In Figure 31D, the clasp 54' is in the closed position. In this position, the tooth 130 ′ has become seated in the recess 132 ′, and the particulate filter 102 has been completely pulled into the filter housing 112. The interaction between the tooth portion 130' and the locking pin 128' helps to fix the clip 54' in the closed position.

[0154] The optional fastener 54" is similar to the fastener 54'. In this embodiment, the buckle 54" includes a series of contours that interact with the locking pin 128" to control the movement and feel of the buckle 54". More specifically, the buckle 54" It includes a stop 134" and a seat 136" that are configured to engage the locking pin 128" when the clasp 54" is in the open or closed position. The stop 134" is configured to engage the locking pin 128" when the clasp 54" is in the fully open position. The stop 134" helps limit the range of movement of the clasp 54". The seat 136" is configured to Interlocks with locking pin 128" when 54" is in the fully closed position. The front edge of the seat 136" can be raised to create a snap-fit ​​interaction when the clasp 54" is closed or opened. The operation of the clasp 54" will now be described with reference to Figures 32A-D. In Figure 32A, the clasp 54" is shown in the open position. In this position, the hook 124" is disengaged from the locking projection 126", and the stopper 134" is disengaged from the locking pin 128". Figure 32B shows the clasp 54" in a partially closed position. The hook 124" has moved to engage with the locking projection 126". In this position, the particulate filter 102 has been partially pulled into the filter housing 112 , As can be seen by comparison with the reference line R. Figure 32C shows that the clip 54" is further moved toward the closed position. See here Figure In this case, the hook 124" has further engaged the locking protrusion 126" and further pulls the filter 102 into the filter housing 112. In addition, the front edge of the seat 136" has begun to engage the locking pin 128". In Figure 32D, the clip 54" is in the closed position. In this position, the locking pin 128" and the seat 136" are fully engaged, and the particulate filter 102 has been fully drawn into the filter housing 112. Locking pin The relationship between 128" and seat 136" helps to secure clip 54' in the closed position.

[0155] G. Alternative embodiments

[0156] The invention can be implemented in a wide variety of alternative embodiments. For example, an alternative embodiment is Figure 33A- Shown in 53D. In addition to the following description or attached Figure In addition to the content shown in the above, this alternative embodiment is generally Figure 1A- The embodiment shown in 20B is the same. For ease of disclosure, this alternative embodiment will be described with the same reference numbers as those used in association with the ATS 10, except for the number "4" at the beginning. For example, the candidate ATS is designated with reference number 410 (similar to ATS 10), and the ATS housing of the candidate ATS is designated with reference number 4110 (similar to ATS housing 110).

[0157] Reference now Figure 33A , 33B And 34, the ATS 410 generally includes a housing assembly that houses a control system 412, a fan 456, a pre-filter 4100, a particulate filter 4102, and an activated carbon filter 4104. The ATS 410 includes: untreated air inlets 4106a-c at the front through which untreated air is sucked into the system through untreated air inlets 4106a-c; and an air outlet 4108 at the rear through which the processed air is returned to the environment. (see Figure 44 ). In operation, the control system 412 operates the fan 456 to suck untreated air into the ATS 410 through the inlets 4106a-c, move the untreated air through the three filters 4100, 4102, and 4104 in sequence, and then discharge it through the outlet 4108 Processed air. The size, shape and structure of the inlet, outlet and internal flow path can be changed according to the application.

[0158] Refer again Figure 34 The housing assembly generally includes a main housing 4110, a filter housing 4112, and a top housing 4113. The main housing 4110 mainly forms the rear, sides, and bottom of the ATS 410. Like the ATS 10, the filter housing 4112 is attached to the main housing 4110 to close the front of the ATS 410 and provide seats for the particulate filter 4102 and the carbon filter 4104. Or as Figure 49 As best shown in, the top housing 4113 is attached to the rear side of the filter housing 4112, e.g., by bolts (not shown). The top housing 4113 includes an integrated handle 448. In this embodiment, the handle 448 includes a central section, which can be grasped with one hand, and a pair of side sections, which can be grasped with both hands. in Figure In the illustrated embodiment, the main housing 4110 includes a cord reel 444 (or spool) for manually winding a power cord (not shown) (see Figure 33B ). In this embodiment, the spool 444 includes a pair of fingers 445 that are spaced apart on opposite sides of the power cord input port 447. The size, shape, and configuration of the finger 445 may vary, for example, depending on the characteristics of the power cord. As shown, the cord reel 444 may be placed in a recess in the main housing 4110 so that it does not protrude and therefore does not increase the profile of the ATS 410.

[0159] The ATS 410 includes a removable front cover 432 that closes the front of the ATS 410 and covers the display 416 and filters 4100, 4102, and 4104. Such as various Figure (Figures 33a, 44, and 46), the front cover 432 defines the central entrance 4106a and is spaced apart from the filter housing 4112 so that the front cover 432 and the filter housing 4112 cooperatively define the side entrances 410b-c . Figure The illustrated front cover 432 is made of an opaque plastic material, for example, by injection molding. Alternatively, the front cover 432 may be manufactured from a wide range of alternative materials. In this embodiment, the front cover 432 includes a window 433 that covers the display 416. The window 433 fits into the corresponding opening 435 defined in the front cover 432. In order to hide the unlit display elements, the window 433 of this embodiment is translucent at least in one or more areas covering the display elements 418. The window 433 may be made of a translucent polymer (e.g., molded thermoplastic), which has a lacquer or film coating that provides the desired opacity. In one embodiment, the window 433 is covered by an in-mold film process. To promote the proper appearance of the "dead side" display, the paint or film coating applied to the window 433 may need to be carefully controlled. Alternatively, the window 433 may be made of a translucent material, such as molded translucent thermoplastic.

[0160] in Figure In the illustrated embodiment, the front cover 432 is configured to allow one-handed removal and installation. The front cover 432 includes a mechanical attachment point at the top, and a pair of magnetic attachment points at the bottom. Reference now Figure 45A , 45B And 46, Figure The mechanical attachment point of the illustrated embodiment includes a buckle 436 (or lip) that extends from the front cover 432 and is configured to fit in the seat 437 in the electronic module 414, or in a configuration surrounding the electronic module 414 . The fastening portion 436 may be manufactured separately and attached to the front cover 432 (see FIG. 46), or it may be integrally formed with the front cover 432 (not shown). The buckle portion 436 of this embodiment is oriented at an angle that allows the buckle portion 436 to remain in the seat 437 when the front cover 32 is closed. This allows the front cover 432 to be detached from the ATS housing 4110 by sliding upward relative to the ATS housing 4110. This upward sliding action not only disengages the buckle 436 from the seat 437, but can also simultaneously disengage the magnet 490 from the attachment plate 492 in the ATS housing 4110 (as discussed below), thereby facilitating removal. The size, shape, and configuration of the buckle portion 436 can vary with the application. In an alternative embodiment, the snap-on portion 436 may be replaced by substantially any male or female configuration capable of engaging with the socket 437 or other similar configuration within or around the electronic module 414.

[0161] The front cover 432 of this embodiment includes two magnetic attachment point positions toward opposite sides of the bottom of the front cover 432. Each magnetic attachment point includes a magnet 490 carried by the front cover 432, and an attraction plate 492 on which the ATS housing 4110 is mounted (see FIG. 48). The magnet 490 may be a dish-shaped rare earth magnet installed in a corresponding insertion hole 494 protruding from the rear of the front cover 432. In this embodiment, the plate 492 is configured to perform two functions-(i) providing a magnetic attraction structure for the magnet 490 and (ii) rotatably supporting the roller 447. In this embodiment, each plate 492 is substantially L-shaped, having a first leg 493 that is positioned to receive the magnet 490, and a second leg 495 that rotatably supports the drum 447. The first leg 493 and the second leg 495 are generally flat, but may include ridges or other contours to increase strength or cooperate with adjacent components of the ATS 410. The first leg 493 includes a pair of mounting tongues 491 that extend rearward and allow the plate 492 to be attached to the housing 4110, for example, by bolts (not shown). The second leg 495 defines a circular opening 497 configured to rotatably receive the rotating shaft (or shaft) of the drum 447. In use, the two plates 492 trap the opposite ends of the shaft or rotating shaft of the roller 447. In this embodiment, the plate 492 is stamped from a sheet material and is configured to facilitate the left or right hand so that the same plate 492 can be used on the opposite side of the ATS 410 by simply turning the plate 180 degrees. For example, the mounting tongue 491 may be vertically centered, and each tongue 491 may be equally spaced apart from the corresponding end of the first leg 493. In addition, the circular opening 497 may be vertically located on the second leg 495.

[0162] In this embodiment, the control system 412 includes a capacitive sensor that allows the system to recognize when the front cover 432 is installed and when it is removed (discussed in more detail below). This eliminates the need for any interlocking magnets or magnetic field sensors (as discussed above in connection with ATS 10) to determine the presence of the front cover.

[0163] As described above, the ATS 10 includes a pre-filter 4100, a particulate filter 4102, and a carbon filter 4104. Similar to the ATS 10, the filter is fixed in the ATS 410 by the filter holder assembly 450 incorporated into the particulate filter 4102. More specifically, the filter is installed by fitting the carbon filter 4104 into the filter seat in the filter housing 4112, and fitting the particulate filter 4102 into the filter seat in the filter housing 4112 In the above, on the carbon filter 4104, the filter holder assembly 450 is used to fix the particulate filter 4102, and the pre-filter 4100 is attached to the particulate filter 4102. In this embodiment, the filter holder assembly 450 is somewhat different from the filter holder assembly 50 discussed in connection with the ATS 10 above. In this embodiment, the bottom of the particulate filter 4102 is buckled by the buckle part 452, the buckle part 452 fits into the gap 4120 in the filter housing 4112, and the top part is held by the buckle 454 (or latch), The buckle 454 (or latch) is interlocked with a locking protrusion 4126 extending from the filter housing 4112. Figure 52A-D Figure The process of removing the particulate filter 4102 from the ATS 410 is shown. Figure 52A shows the particulate filter 4102 installed with the clasp 454 in the closed position. Figure 52B shows the particulate filter 4102 installed with the clasp 454 rotated into the open position. FIG. 52C shows that the top of the particulate filter 4102 is inclined away from the ATS 410. The tilting action of the filter 4102 also causes the buckle portion 452 to disengage (or mostly disengage) from the gap 4120. Figure 52D shows the particulate filter 4102 removed from the ATS 410. in Figure In the illustrated embodiment, the fastener 454 is configured to tightly pull the particulate filter 4102 into the filter housing 4112 when it is closed. This helps to compress the face seal (not shown) of the particulate filter 4102 against the shoulder 4114 to promote an airtight seal.

[0164] Reference now Figure 51A- C, the buckle portion 452 is arranged at the center of the bottom of the frame of the particulate filter 102. The fastening portion 452 of this embodiment is integrally molded with the frame of the particulate filter 4102, but it may alternatively be formed separately and attached to the frame. Figure The buckle portion 452 of the illustrated embodiment has a quarter circular cross-section, which can facilitate installation and removal from the corresponding void 4120 in the filter housing 4112. The number, size, shape, and configuration of the buckle portion 452 and the gap 4120 may vary with the application as desired.

[0165] In this embodiment, the fastener 454 is rotatably installed near the top center of the frame of the particulate filter 4102. The fastener 454 includes a handle 4122, a tooth portion 4130, and a hook 4124. The tooth 4130 is configured to engage the locking pin 4128 as the buckle 454 is turned into the closed position. More specifically, the engagement between the tooth 4130 and the locking pin 4128 causes the clip 454 to snap into the closed position. Further, the hook 4124 is configured to engage the locking projection 4126 when the buckle portion 454 is rotated into the closed position. in Figure In the illustrated embodiment, the position and configuration of the hook 4124 and the locking protrusion 4126 are selected so that the clasp 454 provides a cam-like function to pull the particulate filter 4102 into the filter housing 4112 when the clasp 454 is closed. The operation of the clasp 454 is shown in Figures 53A-D. In FIG. 53A, the clasp 454 is shown in the open position with the hook 4124 disengaged from the locking projection 4126. Figure 53B shows the clasp 454 rotated clockwise into the partially closed position. FIG. 53C shows that the clasp 454 is rotated further clockwise into a position where the tooth 4130 is about to engage the locking pin 4128. Finally, Figure 53D shows the clasp 454 in the closed position. As can be seen, the tooth 4130 has moved past the locking pin 4128 and now resists movement of the fastener 454 out of the closed/locked position. In addition, the hook 4124 has moved into engagement with the locking projection 4126. The engagement between the hook 4124 and the locking protrusion 4126 pulls the particulate filter 4102 completely into the filter housing 4112.

[0166] In this embodiment, the pre-filter 4100 is fixed to the particulate filter 4102, and a structure that is somewhat different from the structure incorporated in the ATS 10 is used. Such as Figure 34 As shown in, the pre-filter frame 4116 includes a pair of tongues 4304 at the bottom, and a pair of slotted tongues 4306 at the top. Such as Figure 51A- As shown in C, the particulate filter 4102 includes a pair of slotted feet 4300 on the bottom and a pair of fingers 4302 on the top. The finger 4302 may be configured to snap-lock into engagement with the slotted tongue 4306. For example, the fingers 4302 may be angled upward from the particulate filter frame. In use, the pre-filter 4100 is fixed to the particulate filter 4102 in the following manner: first insert the tongue 4304 on the bottom of the pre-filter frame into the groove in the foot 4300 on the bottom of the particulate filter 4102, and Then the top of the pre-filter 4100 is tilted inward toward the top of the particulate filter 4102 to snap-fit ​​the slotted tongue 4306 onto the finger 4302 on the top of the particulate filter 4102.

[0167] Control System

[0168] The ATS 410 includes a control system 412 that controls the operation of the ATS 410 and provides a user interface. The user interface is used to display information and receive input from an operator. The main function of the control system 412 is to control the speed based on the measured parameters or operator input (ATS 410 operates at this speed) to process air, track the use of filters, set the mode, motor speed, and filter life Notify the operator and accept the operator's instructions. The control system 412 includes a user interface that is implemented as a "dead side" display 416 that displays information and receives operator input related to the operation and maintenance of the system. The display 416 includes a plurality of display elements 418 that are only visible when illuminated to provide a dynamic display of information that changes to provide a dynamic display of information and to show the control options available at any given moment (compare Figures 40 and 41). As with the display 16 discussed above, the display 416 of the ATS 410 includes: an information display element 418a, which is illuminated to provide information about the status of the ATS or monitored characteristics; and an input display element 418b, which incorporates a touch sensor, This allows the operator to provide input to the control system 412 (see Figure 41). In addition to allowing user input, the input display element 418b can also provide information about the status of the ATS, such as the operating mode and fan speed. The display 416 basically includes the same display element 418 as the display 16 described above, except that the display element 418 is configured differently, and the display 416 includes an additional display element to show when the display 416 uses an integrated WiFi transceiver to communicate with external Telecommunication.

[0169] The control subsystem 460 includes a control circuit and firmware, which is configured to operate the ATS 410 and coordinate from various other subsystems (including the capacitive touch sensor array 464, the dust sensor 480, the RFID subsystem 468, and the wireless communication subsystem 470) Data collection. The various operating modes of the system will be described in more detail below. Reference now Figure 36 Schematic display of Figure The electronic module 414 generally includes a distributed control structure, with a main application controller 510, a touch monitoring controller 512, an LED driver controller 514, and an RFID controller 516. The main controller 510 is connected to the dust sensor 480, the RFID subsystem 468 (including the RFID controller 516 and the RFID antenna 518), the wireless communication subsystem 470 (including the Bluetooth module 520 and the WiFi module 522), and the electronic components that constitute the display 416 (including LED driver controller 514 and touch monitoring controller 512). The main controller 510 is also connected to the fan motor power supply 530 to allow the main controller 510 to control the fan speed, and in some applications to receive feedback from the fan motor power supply 530. The main application controller 510 is also connected to: a buzzer 524 for providing audible output, a UART connector 526 for diagnostics, and a non-volatile memory (such as EEPROM 528) for storing pre-programmed Operational preset values ​​and historical operation data, such as filter life, usage time, counters, and other variables that can be used in association with the operation of the ATS 410. The touch monitoring controller 512 is electrically connected to the capacitive touch key defined by the plurality of capacitive lines 532 and is electrically connected to the ambient light sensor 534. In use, the touch monitoring controller 512 can monitor the capacitance trace and the ambient light sensor 534, and provide touch/proximity information and ambient light information to the main application controller 510. The LED driver controller 514 is coupled to the LED array 462. In operation, the LED driver controller 514 may light up a single LED in the LED array 462 according to the instruction received from the main application controller 510.

[0170] The control system 412 is incorporated into the self-contained electronic module 414. Reference now Figure 37-39 The electronic module 414 used for the ATS 410 generally includes a base 4150, a dust sensor cover 4152, an electronic component 550, and a partition 474. In this embodiment, the base 4150 is mounted on the filter housing 411 2 and provides a structure (various components of the electronic module 414 are mounted on the structure). The base 4150 includes an electronic component holder (not shown) that allows the electronic component 550 to be mounted to the bottom surface of the base 4150, for example, by a bolt (not shown) extending through the mounting tongue 552. The base 4150 also includes a dust sensor compartment 560 that seats the dust sensor 480 and provides a flow path to guide air over the dust sensor 480. The flow path generally includes a sensor inlet 482, a sensor channel 484, and a sensor outlet 486. The sensor inlet 482 may be closed by a dust partition 562 to prevent large particles from contaminating the dust sensor 480. The dust sensor 480 can be enclosed in a pair of rubber half-shells 488a and 488b, and the pair of rubber half-shells 488a and 488b create a leak-free seal around the dust sensor 480. The dust sensor cover 4152 may define a plurality of air flow openings 564 that allow air to flow out of the dust sensor compartment 560 to a position upstream of the particulate filter 4102. It must be pointed out that the dust sensor flow path is described for the following system: In this system, the partial vacuum generated by the fan 456 draws air into the ATS 410 along the dust sensor flow path. Alternatively, if the air released by the ATS 410 through the air outlet 4108 produces a partial vacuum at the sensor inlet 482 that is greater than the partial vacuum produced by the fan at the hole airflow opening 564 in the dust sensor cover 4152, the air can pass through The flow path of the dust sensor flows in the opposite direction.

[0171] The electronic components 550 used in the ATS 410 generally include a bottom PCB 566, a light conductor 472, and a top PCB 568 (see Figure 39 ). The bottom PCB 566 can support the entire circuit and circuit components, including various controllers and the LED array 462. The LED array can include a plurality of individual LEDs 462a, which can be selectively illuminated when appropriate. Each LED 462a may include a single LED or multiple LEDs that provide various lighting options. In this embodiment, each LED associated with the filter life display element may include a red LED and a green LED; each LED associated with the ATS display element, the power display element, and the line display assembly may include a white LED; and the fan speed The LEDs associated with the display element, the turbo mode display element, the WiFi display element, and the dust sensor cloud sensor element may include blue LEDs and white LEDs; the LEDs associated with the first dust level display may include red LEDs, green LEDs, and yellow LED; each LED associated with the second and third dust levels may include a red LED and a yellow LED; each LED associated with the fourth and fifth dust levels may include a red LED, and each associated with the night mode display element The LED may include a red LED and a white LED. Like the ATS 10, the LED array 462 can be replaced or supplemented by other types of light sources (such as OLED, laser, and EL light sources).

[0172] The light conductor 472 provides a mounting structure for the PCBs 566 and 568, and includes a plurality of light pipes 472a, which transmit light from the LED array 462 on the bottom PCB 566 through the openings in the top PCB 568 to light the partitions. The display element 418 on the board 474. The light pipe 472a is configured to generate a light flow path from the LED 462a to the corresponding display element 418. The light pipes 472a can be isolated from each other to prevent light from leaking from one LED 462a to the adjacent display element 418. The surface of the light pipe 472a may be coated or textured to generate scattered light.

[0173] The top PCB 568 is mounted on top of the light conductor 472. The top PCB 568 defines a plurality of light openings 570 and a plurality of lines 532, which function as a capacitive touch sensor. In this embodiment, the top PCB 568 includes separate light openings 570 for each display element 418 (see Figure 38 with 39 ). The size, shape, and configuration of the light opening 570 can vary with different applications, for example, depending on the desired lighting effect. As described above, the control system 410 includes a plurality of capacitive touch sensors 464. The design and structure of the capacitive touch sensor can vary depending on the application. For example, each capacitive touch sensor may include a pair of electrodes and a touch may be recognized by monitoring the mutual capacitance between the pair of electrodes. As another example, each capacitive touch sensor may include a single electrode, and a touch may be recognized by monitoring the self-capacitance of the electrode. Reference now Figure 39 , The line 523 (or line pair) extends around each light opening 570 associated with the input display element 418b. More specifically, conductive lines 532 (or pairs of lines) such as copper conductive elements are provided to surround the perimeter of each light opening 570 associated with the input display element 418b. The size, shape, span, and other aspects of the structure of each conductive line 532 can be changed with different applications to provide desired touch sensor characteristics. In addition, the top PCB 568 may include additional conductive traces 532b intended to sense the proximity of the operator. Such as Figure 39 As shown in the sensor line 532b may be a relatively large line that extends along a significant portion of the top PCB 568. In use, the touch monitoring controller 512 can monitor various conductive lines 532 to determine when a touch or proximity event occurs.

[0174] In this embodiment, the control system 412 includes a single partition 474 that covers all the display elements 418. The separator 474 has a laminated structure and basically includes a diffusion layer and a shielding layer. The diffusion layer disperses the light generated by the LED. The masking layer blocks the light to generate the desired Figure Shapes, including various opaque and translucent materials, such as ink, paint, film and other adhesive layers. in Figure In the illustrated embodiment, the shielding layer is provided on the outer surface of the diffusion layer relative to the LED or other light source, but it can be placed elsewhere if desired. Although the shielding layer and diffusion layer are in Figure Part of the single laminated structure in the illustrated embodiment, they may alternatively be separate components. For example, they may be manufactured separately and placed next to each other during assembly of the display 416.

[0175] The operation of ATS 410 will now refer to Figure 42 with 43 To describe. Figure 42 It's the monitor 416 Figure It shows the outline of all the display elements 418, including the information display element 418a and the input display element 418b. Figure 43 Shows a series of displays 416a-m in different operating modes Figure Show. in Figure In the illustrated embodiment, when the power is turned off, the display 416 can be in three different states. When the ATS 410 is unplugged or not receiving power, the display is completely blank, as shown by the display 416a. When the ATS 410 is plugged in, but not powered on and no user is approaching, the display elements 618a-c are illuminated to show the line across the display 416, as shown by the display 416b. When the ATS 410 is plugged in, but there is no power and a user is approaching, the display elements 618a-c and 608 are lit to display the line and power Figure As shown by the display 416c.

[0176] The control system 412 can determine the operator's approach by monitoring the capacitor line 532b. The control system 412 and the access circuit 532b may be configured to use various alternative approaches to determine when the operator is approaching. in Figure In the illustrated embodiment, the control system 412 and the access circuit 532b are configured to determine the operator's approach when the operator comes within about twelve inches of the circuit 532b, for example, by swiping over the display 416 within about twelve inches of the window 433 Hand. The size, shape and configuration of the line 532b and/or the sensitivity of the control system 412 to the changes sensed in the line 532b can be changed to increase or decrease how close the operator must be in order for the system to make a user approach. in conclusion. The control system 412 may determine that the user is not approaching based on the elapsed time after the display 416 has received the user input. For example, every time a user input event occurs, the control system 412 may reset the countdown timer. Every time the user touches the touch key line 532 or every time the user comes within a distance close enough to the line 532b, a user input event may occur. If the countdown timer reaches zero, the control system 412 will conclude that there is no operator approaching, and adjust the display 416 accordingly. Then, the control system 412 may continue to monitor the proximity line 532b to determine when the user is close enough to the display 416. In addition, if the touch key line 532 is touched by the user, the control system 412 can also conclude that the user is approaching.

[0177] Once the power is turned on, the display 416 can be operated in various alternate states. When the ATS 410 is in manual mode and the user approaches, all the display elements are moderately lit, as shown by the display 416d. The display elements 618a-c are lit to display lines. Display element 608 is lit to display power Figure Mark. The display element 614 is lit to show the night mode Figure Mark. Because the ATS 410 is not in the night mode, the display element 614 lights up in white. Display element 606 (including dust Figure The mark 606a and the appropriate dust level indicator 606b) are illuminated. Because the ATS 410 is not in automatic mode, the dust Figure The mark lights up in white. In addition, since the dust level is sufficiently low, only a single dust level indicator 606b is illuminated, and it is illuminated in green. Display element 616 (including fan Figure The indicator 616a and the appropriate fan speed indicator 616b) are illuminated. Because the ATS 410 is in manual mode, the fan Figure The mark 616a is lit blue. All fan speed indicators 616b are lit, where the indicator representing the actual fan speed is lit in blue, and the indicator representing the higher fan speed available is lit in white. The display element 612 is lit white to indicate that the ATS 410 is not in the turbo mode. Filter life display elements 600, 602, 604 (including ATS Figure Mark 605) is lit. In this example, all filters have a remaining life and are therefore lit green. ATS Figure The mark 605 is lit white. Finally, the display element 620 is lit to display WiFi Figure Mark. In this example, there is no WiFi transmission, so WiFi Figure The beacon is lit white. When the operator is no longer approaching, the display 416 transitions to the off state, showing significantly fewer display elements. Referring now to the display 416e, the display element 618b is illuminated to show the central portion of the line. Display element 606 (including dust Figure The mark 606a and the appropriate dust level indicator 606b) are illuminated. Display element 616 (including fan Figure The indicator 616a and the appropriate fan speed indicator 616b) are illuminated. In this state, the fan speed indicator, which only represents the actual fan speed, is lit blue. The higher fan speed available is not illuminated. If any filter expires, the display will also show filter life display elements 600, 602, 604, including ATS Figure 标605. In the example shown in display 416f, the pre-filter Figure The mark 600 is lit green to indicate that it has a remaining life. The particulate filter Figure Standard 602 and carbon filter Figure 604 is lit in red to indicate that they are expired and that the ATS Figure The beacon is lit white.

[0178] The operator can touch the dust sensor Figure Mark 606a to put ATS 410 in automatic mode. When the ATS 410 is in the automatic mode and the user approaches, all the display elements are appropriately lit, as shown in the display 416g. The display elements 618a-c are lit to display lines. Display element 608 is lit to display power Figure Mark. The display element 614 is lit white to show the night mode Figure Mark. Display element 606 (including dust Figure Mark 606a and appropriate dust level Figure Mark 606b) is lit. Because the ATS 410 is in automatic mode, the dust Figure The mark 606a is lit blue. In addition, because the dust level is at the highest display level, all dust level indicators 606b are lit in red. Display element 616 (including fan Figure The indicator 616a and the appropriate fan speed indicator 616b) are illuminated. Because the ATS 410 is in automatic mode, the fan Figure The mark 616a is lit white. The fan speed indicator 616b, which represents the actual fan speed, is lit in blue. In this example, the fan is operating at maximum speed, so all indicators are lit blue. The display element 612 is lit white to indicate that the ATS 410 is not in the turbo mode. Filter life display elements 600, 602, 604 (including ATS Figure Mark) is lit. In this example, all filters have a remaining life and are therefore lit green. ATS Figure The beacon is lit white. Finally, the display element 620 is lit to display WiFi Figure Mark. In this instance, no WiFi transmission occurs, so WiFi Figure The beacon is lit white. When the operator is no longer approaching, the display 416 transitions to a light-off state, showing significantly fewer display elements. Referring now to the display 416b, the display element 618b is illuminated to show the central portion of the line. Display element 606 (including dust Figure The indicator 606a (blue) and the appropriate dust level indicator 606b (red)) are illuminated. Display element 616 (including fan Figure The indicator 616a (white) and the appropriate fan speed indicator 616b (blue)) are illuminated. If any filter expires, the display 416 will also show the filter life display elements 600, 602, 604 (including ATS Figure Mark 605) (see, for example, see 416f).

[0179] The operator can touch the turbine Figure Mark to activate turbo mode. When the ATS 10 is in turbo mode and the user approaches, all the display elements are moderately lit, as shown by the display 416i. The display elements 618a-c are lit to display lines. The display element 608 is lit white to display power Figure Mark. The display element 614 is lit white to show the night mode Figure Mark. Display element 606 (including dust Figure The mark 606a (white) and the appropriate dust level indicator 606b) are illuminated. Because the dust level is medium, the three dust level indicators are lit in yellow. Display element 616 (including fan Figure The indicator 616a (white) and the appropriate fan speed indicator 616b) are illuminated. Because the ATS 410 is in turbo mode, the fan is operating at maximum speed and all indicators 616b are lit blue. The display element 612 is lit in blue to indicate that the ATS 410 is in turbo mode. Filter life display elements 600, 602, 604 (including ATS Figure Mark 605) is lit. In this example, all filters have a remaining life and are therefore lit green. ATS Figure The beacon is lit white. Finally, the display element 620 is lit to display WiFi Figure Mark. In this instance, no WiFi transmission occurs, so WiFi Figure The beacon is lit white. When the operator is no longer approaching, the display 416 transitions to a light-off state, showing significantly fewer display elements. Referring now to display 416j, display elements 618a and 618b are illuminated to show the left and middle portions of the line. Display element 606 (including dust Figure The mark 606a (white) and the appropriate dust level indicator 606b (yellow)) are illuminated. Display element 616 (including fan Figure The indicator 616a (white) and the appropriate fan speed indicator 616b (blue)) are illuminated. The display element 612 is lit in blue to indicate that the ATS 410 is in the turbo mode. If any filter expires, the display 416 will also display the filter life display elements 600, 602, and 604, including ATS Figure Mark 605 (see display 416f, for example).

[0180] ATS 410 can touch the night mode Figure The label is placed in night mode. When in the night mode, the display 416 only displays night lights that light up in red Figure Mark 614, as shown in the display 416k Figure Show. When in the night mode, the control system 412 limits the maximum speed of the fan 456 and slows the rate at which the fan 456 transitions from one speed to another. When in night mode, the control system 412 may be configured to implement other features. In this embodiment, when in the night mode, the control system 412 can operate in manual or automatic mode. For example, when the control system 412 is in manual mode or automatic mode, the user can touch the night mode Figure Mark 614, and the control system 412 will switch to night mode, otherwise continue to operate the fan 456 according to the existing mode. When switching from the manual mode to the night mode, the control system 412 will operate the fan 456 at a manually designated speed unless the manually set speed is above the maximum speed threshold. If so, the control system 412 reduces the fan speed to meet the maximum speed threshold for night mode. When switching from automatic mode to night mode, the control system 412 allows automatic speed control algorithms to control the fan speed, except that the control system 412 does not allow the fan speed to exceed the maximum speed threshold, and changes from one fan speed to another at a slower conversion rate One fan speed.

[0181] The ATS 410 may also have the ability to connect to external applications using WiFi or other wireless communication systems. To enter the wireless communication mode, the operator can touch WiFi Figure 标 (display element 620). When the ATS 410 attempts to establish a wireless connection, the display element 620 may be lit in blue in a blinking pattern, as shown by the display 4161. Once the connection is established and when the ATS 410 remains in the wireless communication mode, the flashing can be discontinued and the display element 620 can be lit in blue, as shown by the display 416m. In this embodiment, wireless communication can be employed during any operation mode, and the control system 412 can continue to operate the display 416 according to the existing operation mode. Wireless communication can be used to transmit operations associated with the ATS 410 (such as filter life data for various filters, fan motor speed and operating time, and dust sensor readings over a period of time) to a remote location. Wireless communication can also be used to transmit diagnostic information, including data that can allow individuals to obtain the operation of the ATS 410 at a remote location to determine whether maintenance or repair is required. Further, wireless communication can be used to update firmware and/or any other programs or data included in the control system 412.

[0182] The foregoing is a description of the existing embodiments of the present invention. Various modifications and changes can be made without departing from the spirit and broader aspects of the present invention as defined in the appended claims, which will be interpreted in accordance with the principle of patent law including the doctrine of equivalence . This disclosure is in Figure It is shown for illustrative purposes, and should not be construed as an exhaustive description of all the embodiments of the present invention, or to limit the scope of the claims to those associated with these embodiments Figure Specific embodiments shown or described. By way of example and not limitation, any single (multiple) elements of the present invention described may be replaced by alternative elements, which provide substantially similar functions or provide appropriate operations. This includes, for example, currently known alternative components, such as those that may be known to those skilled in the art at present and those that may be developed in the future. For example, once developed, those skilled in the art can recognize alternatives. Those optional components. Further, the disclosed embodiments include multiple features, which are described together and can collectively provide a range of benefits. Unless expressly stated otherwise in the submitted claims, the present invention is not limited to embodiments including all these features or embodiments including all the proposed benefits. Any reference to a singular designation (such as "a", "an" or "the") of a claimed element shall not be construed as limiting the element to be singular.