Description:FIELD OF THE INVENTION
The present invention relates to airflow and climate control systems, and more particularly to a ceiling-mounted smart multisensory airflow apparatus that integrates directional airflow, thermal management, humidity regulation, fragrance diffusion, air purification, lighting effects, and sound ambience within a compact cassette-type housing operable through IoT-based smart control.

BACKGROUND OF THE INVENTION
Conventional ceiling fans rely on rotating blades to circulate air, often producing non-uniform airflow distribution, mechanical wear, noise, and safety concerns. While some advanced fans incorporate lighting or heating elements, they remain limited to single-function operation and lack multisensory integration. Separate devices such as air fresheners, humidifiers, and Bluetooth speakers are often used alongside fans, leading to redundancy, inefficiency, and clutter in living spaces.
Existing ceiling-mounted HVAC systems offer thermal comfort but consume high energy and do not provide personalized airflow or multisensory ambience. There is, therefore, a need for a unified ceiling-mounted system that combines airflow management, heating, humidity control, fragrance diffusion, air purification, lighting, and sound, while remaining energy-efficient, safe, and aesthetically integrated.
Thus, there exists a need for a ceiling-mounted, structurally integrated fan system that combines aerodynamic airflow control with comfort heating and avoids drawbacks of conventional hanging fans.

OBJECTS OF THE INVENTION
• An object of the invention is to provide a ceiling-mounted airflow system that eliminates the need for exposed rotating blades, thereby enhancing occupant safety, reducing mechanical wear, and improving aesthetics.
• Another object of the invention is to deliver extended and directional airflow coverage using a spiral compression channel and multi-nozzle assembly, ensuring uniform comfort across seating zones.
• A further object of the invention is to provide an energy-efficient air circulation mechanism that operates at reduced motor speeds while maintaining effective airflow distribution.
• An object of the invention is to incorporate a heating chamber with phase-change material (PCM) for stable and efficient thermal comfort.
• An object of the invention is to enable a dry-heat humidity reduction mode for regulating indoor relative humidity without condensate formation.
• An object of the invention is to integrate a multi-fragrance dispensing module with removable cartridges and stepper-motor-based selection, enabling clean and customizable aroma diffusion.
• An object of the invention is to provide mood-synchronized lighting effects, including dynamic chandelier-style illumination linked to fragrance and airflow modes.
• An object of the invention is to incorporate a concealed sound system for ambience creation, including nature sounds, instrumental music, and sleep-inducing audio.
• An object of the invention is to enable multisensory ambience modes (Relax, Romantic, Baby Sleep, Energize, Party) through coordinated operation of airflow, heating, fragrance, lighting, and sound.
• To provide an enhanced purification mechanism using sequential air heating and UV-C sterilization.
• To achieve higher pathogen neutralization rates without increasing UV-C exposure time or energy usage.
• To improve occupant wellness by maintaining warm, purified, and humidity-controlled airflow.
• An object of the invention is to provide IoT-based smart control via mobile applications, voice assistants, and AI-driven personalization for seamless remote operation and adaptive comfort.

SUMMARY OF THE INVENTION
The invention provides a ceiling-mounted smart multisensory airflow system comprising a cassette-type housing with a variable-diameter spiral channel for compressing and guiding airflow. A multi-nozzle assembly positioned at angular orientations delivers layered airflow distribution and is rotatable to selectively target seating zones. A heating chamber with a spiral heating coil and phase-change material provides stable heating and a dry-heat mode for humidity reduction.
A multi-fragrance dispensing module enables selective diffusion of aromatic vapours through removable cartridges and a stepper-motor-driven selector without cross-contamination.
The invention combines controlled air heating with UV-C sterilization. The heating chamber slightly elevates supply air temperature, reducing humidity and weakening pathogen resistance, while the downstream Pure Air UV-C Chamber exposes the airflow to germicidal radiation. This combination achieves a synergistic purification effect, enabling higher microbial neutralization efficiency at lower UV-C intensity and reduced energy consumption.
Integrated mood lighting and a concealed sound system synchronize with fragrance and airflow to create ambience modes such as Relax, Romantic, Baby Sleep, Energize, and Party. IoT connectivity allows mobile and voice-based operation, scheduling, and AI-driven personalization.

LIST OF FIGURES
Figure 1 –
• Figure 1A illustrates the arrangement of the primary and secondary variable-volume air channels, the airflow direction within the spiral path, and the placement of the motor assembly.
• Figure 1B provides a side cross-sectional view of the cassette housing, showing the relative positioning of the major components utilized in the invention.
Figure 2 –
• Figure 2A depicts a tentative bottom view of the cassette structure.
• Figure 2B illustrates a side view of the cassette structure.
Figure 3 –
• This figure illustrates the angular positioning of the outlet nozzles within the nozzle set assembly.
Figure 4 –
• Figures 4A, 4B, and 4C illustrate zone-wise airflow distribution (θ1, θ2, θ3) from the three nozzles, shown at three different rotational positions of the nozzle set assembly.
Figure 5 –
• This figure illustrates the structural configuration of the integrated fragrance-dispensing system.
List of labels (Components)-
1. Cassette Frame (1)
2. Main Motor (2)
3. Variable Volume Air Intake Channels (Primary) (3, 4, 5)
4. Heating Chamber (6)
5. Spiral Variable Diameter Air Supply Channels (Secondary) (7, 8, 9)
6. Phase Change Material (10)
7. Heating Coil (11)
8. Direction Control Motor with Gear Assembly (12, 13, 14)
9. Constant Volume Mini Channels (15, 16, 17)
10. Vertical Fragrant Air Channel (18)
11. Vertical Shaft with hollow barrier and vent (19)
12. Stepper Motor (20)
13. Removable Cartridge (21, 22, 23)
14. Removable SS wire mesh (24, 25, 26)
15. Sound Speaker (27)
16. Integrated Mood Lighting System (28)
17. UV-C LED light (29)

DETAILED DESCRIPTION OF THE INVENTION
General Structure
The present invention relates to a ceiling-mounted smart multisensory airflow system designed to integrate directional airflow, thermal management, humidity regulation, fragrance diffusion, air purification, mood lighting, and sound ambience into a single cassette-type ceiling unit. Unlike conventional ceiling fans with exposed blades and limited control, the disclosed system delivers personalized, energy-efficient, and multisensory comfort in residential, commercial, and hospitality environments.
1. Cassette-Type Housing and Airflow Spiral Channel
• The entire system is housed within a ceiling-mounted cassette structure (1) with motor (2) is fitted at centre, similar to cassette air conditioners (as shown in figure 2).
• Removable Stainless Steel wire mesh (24, 25, 26) block insects and flies to enter in to the channel, and easy to remove and clean.
• IoT controlled Sound System (27) and Lighting system (28).
• This ensures stable structural support (16), aesthetic integration, and reduced wear-and-tear losses avoiding bearing friction typical in traditional hanging ceiling fans.
• The fan assembly comprises in a primary phase air intake channel of variable diameter (3, 4, 5) designed to capture, compress and guide airflow (as shown in figure 1).
• Secondary phase spiral variable channel (7, 8, 9) passing through (PCM) Phase Change Material (10) ensures increased pressure at the delivery end, allowing focused and extended air throw compared to traditional ceiling fans.
2. Multi-Nozzle Air Delivery Set
• At the delivery end of the spiral channel, a set of nozzle assembly consisting of three outlets (A, B, C) is mounted (as shown in figure 3 and figure 4).
• Each nozzle is oriented at a specific angle to create a layered airflow distribution:
o Nozzle A is aligned at approximately 150° angle to cover far-reaching zones and oblique airflow distribution.
o Nozzle B is aligned at approximately 50° from the horizontal axis and 35° offset from nozzle A, covering intermediate zones.
o Nozzle C is aligned at approximately 90° from the horizontal axis and 40° offset from nozzle B, directing airflow vertically downward to cover near-user zones.
• This arrangement ensures 150⁰ wide-angle, multi-zone airflow, overcoming the limitation of conventional ceiling fans which concentrate air primarily in a downward cone.
3. Rotational Adjustment Mechanism
• There are three identical sets of nozzle assembly and every nozzle assembly has three pair of outlets/nozzles (A, B, C) is mounted on a rotatable axis referenced to nozzle A.
• The set is capable of rotating approximately up to (80°-90°), ranging from near-vertical to horizontal alignment using closed-loop BLDC servo with absolute magnetic encoder/Hybrid stepper motor with worm gear and encoder (13) and (14) (as shown in figure 1).
• A reference orientation is set at 15° from the horizontal axis as given in figure 3, enabling the user to dynamically control the direction and focus of airflow via remote control/Iot based automated actuator systems.
• This remote focusing mechanism allows selective airflow targeting (e.g., directing air towards people seated around a living room table while minimizing airflow wastage on unused central areas).
4. Heating Chamber with PCM and Spiral Coil Integration
• The airflow system further comprises a heating chamber (6) located just below the motor at the delivery side of the spiral compression channel.
• Said chamber is partially or fully filled with Phase Change Material (10), capable of storing and releasing thermal energy for extended heating performance.
• Around the outer periphery of the chamber, a spirally arranged electrical heating coil (11) is laminated, such that the PCM is heated uniformly by conduction.
• The variable diameter spiral airflow channels (7, 8, 9) pass through the said chamber, wherein the blowing air exchanges heat effectively with the PCM.
• This arrangement provides:
o Rapid heating during coil operation,
o Extended warm airflow even after coil power-off, due to PCM heat release,
o Energy savings by reducing frequent coil switching,
o Uniform air temperature across all nozzle outputs.
• Heating operation remains selective and controllable, and can be bypassed when only cooling/ventilation is desired.
5. Dry-Heat Mode (no-condensate)
In one embodiment the apparatus operates in a dry-heat comfort mode during humid seasons. Air drawn through the spiral channel passes a PCM-based heating chamber whose spiral coil raises the supply-air temperature by a small controlled increment (ΔT ≈ 0.5–2.0 °C). Because the absolute humidity of room air is unchanged while its temperature increases, the relative humidity (RH) decreases, improving perceived dryness without generating condensate or requiring drains. The controller limits ΔT for comfort and energy economy and may modulate outlet focusing so warmed air is directed to occupied sectors.
Illustrative example (for paper/spec): Room air 28 °C, 80% RH → absolute humidity ≈ 21 g/m³. Raising supply to 30.5 °C at same absolute humidity → RH ≈ 63–66% (no water produced), perceived clamminess reduced.
6. Multi-Fragrance Selective Dispensing System
The system further incorporates a multi-fragrance dispensing module for selective aroma diffusion (as shown in figure 5).
• Each of the three fragrance channels is provided with a dedicated constant-volume bleed channel (15,16,17) that converges into a central vertical conduit located beneath the motor assembly.
• A rotatable hollow barrier (19) with a single port is driven by a stepper motor to selectively align only one fragrance channel with the conduit at a time.
• Each fragrance channel contains a removable cartridge (21,22,23) equipped with a fibrous wick saturated with liquid fragrance. The wick is positioned in the bleed-air path such that a calibrated fraction of airflow entrains volatile aromatic molecules into the main spiral stream.
Sealing gaskets prevent cross-contamination between fragrance channels. Fragrance diffusion intensity can be adjusted electronically via duty-cycle control of bleed airflow or by optional heating elements.
7. Integrated Mood Lighting
The system includes a programmable LED-based lighting unit (28) embedded within the cassette housing, which projects a dynamic chandelier-like (jhoomer) effect. Unlike conventional fan lights, the disclosed lighting system is designed for mood synchronization, where:
• Relaxation fragrances are paired with warm amber or purple lighting,
• Energizing fragrances are paired with bright daylight tones, and
• Romantic modes are paired with soft dimming gradients.
The lighting is diffused through patterned or prism-like surfaces to simulate a chandelier effect while maintaining a flush cassette profile.
8. Sound Integration
A concealed speaker system (27) is integrated within the cassette housing, providing immersive ambience synchronized with fragrance and lighting. Sound modes include nature ambience (rain, wind, birdsong), romantic instrumental tracks, lullabies for infants, and energizing instrumental beats. In certain modes, airflow pulses may be synchronized with sound rhythms to enhance sensory immersion.
9. Multisensory Mood Modes
The combination of airflow, fragrance, lighting, and sound is organized into selectable modes such as:
• Relax Mode – Lavender fragrance, soft amber lighting, forest ambience, gentle airflow.
• Romantic Mode – Rose fragrance, dimmed warm lighting, instrumental music, warm airflow.
• Baby Sleep Mode – Cotton fresh fragrance, soft blue night-light, lullaby sound, ultra-quiet airflow.
• Energize Mode – Citrus fragrance, bright white light, upbeat instrumentals, cooling airflow.
• Party Mode – Mixed fragrance, dynamic color cycling, synced music, pulsating airflow.
10. Pure Air UV-C Chamber
In one embodiment, the system integrates a Pure Air UV-C Chamber (as shown in figure 1B) positioned downstream of the heating chamber within the spiral airflow path (7,8,9). The heating chamber, comprising a spiral heating coil and optional PCM, raises supply air temperature by 0.5–2 °C, reducing relative humidity and weakening airborne microorganisms.
As the preconditioned air enters the UV-C chamber, UV-C Led/Lamp (29) it is exposed to controlled germicidal irradiation (222–280 nm) within a reflective enclosure, ensuring microbial inactivation without leakage into the occupied space. The combined effect of mild heating and UV-C exposure achieves higher sterilization efficiency at reduced power, extending emitter life and minimizing energy use.
This dual-stage purification delivers sterilized, conditioned airflow while operating seamlessly with the fragrance dispensing, lighting, and sound modules, thereby providing an integrated wellness experience in a ceiling-mounted format.
11. IoT and Smart Control
The system is IoT-enabled, operable through a dedicated mobile application and compatible with smart home platforms (Alexa, Google Assistant, Siri). Users can control airflow, fragrance, lighting, sound, and heating functions individually or in coordinated modes. Additional features include:
• Scheduling: Pre-set modes for morning wake-up or bedtime.
• Remote Access: Control from outside the premises.
• Adaptive AI: The system learns user preferences and auto-suggests or activates suitable modes.
12. Safety, Efficiency, and Aesthetics
The cassette mounting design eliminates exposed rotating blades, reducing mechanical wear, vibration, and risk of injury. The modular housing allows easy access to cartridges and components while maintaining a sleek, integrated ceiling appearance. By combining air management, climate control, fragrance diffusion, lighting, and sound in a single IoT device, the system creates a multisensory wellness hub unlike any conventional ceiling fan or HVAC system.

STATEMENT OF THE INVENTION
Accordingly, the present invention discloses a ceiling-mounted IoT-enabled multisensory airflow system that delivers extended directional airflow, thermal comfort, humidity regulation, fragrance diffusion, air purification, lighting effects, and sound ambience within a single cassette-type ceiling unit. The invention uniquely combines spiral-channel airflow compression, multi-nozzle distribution, dry-heat humidity control, multi-fragrance selection, and synchronized mood-based ambience under IoT-based smart control, thereby overcoming the limitations of conventional ceiling fans and HVAC systems.

ADVANTAGES OF THE INVENTION
1. Multisensory Experience – Integrates airflow, fragrance, lighting, and sound into one coordinated system, creating immersive ambience modes beyond conventional fans.
2. Energy Efficiency – Spiral airflow channel compresses and distributes air at lower motor speeds, reducing electrical consumption while maintaining comfort.
3. Personalized Comfort – Multi-nozzle assembly with rotation mechanism enables directional, layered airflow tailored to seating zones without disturbing central areas.
4. Thermal Stability – Heating chamber with PCM ensures consistent outlet temperature and efficient thermal storage during intermittent heating cycles.
5. Humidity Control – Dry-heat mode reduces relative humidity without condensate formation, improving indoor comfort and health.
6. Fragrance Flexibility – Multi-fragrance module with removable cartridges allows clean, on-demand aroma selection without cross-contamination.
7. Mood Enhancement – Synchronized lighting and sound effects provide ambience modes (Relax, Romantic, Baby Sleep, Energize, Party) enhancing user well-being.
8. Smart Connectivity – IoT-enabled control via mobile app and voice assistants allows remote operation, scheduling, and adaptive AI-driven personalization.
9. Air purification – Heating + UV-C combined effect gives superior sterilization compared to standalone methods.
Lower humidity + weakened pathogens → faster UV-C kill rate.
Requires less UV-C exposure time, reducing power consumption and extending LED life. Unique synergistic approach includes thermal comfort with wellness air quality in one ceiling-mounted system.
10. Safety & Aesthetics – Cassette ceiling mounting eliminates hanging blades, reducing mechanical wear and injury risk while improving interior aesthetics.
11. Modular Maintenance – Easy access to fragrance cartridges, lighting units, and heating modules ensures convenient servicing and long-term reliability.
, Claims:CLAIMS
1. A ceiling-mounted smart multisensory airflow system comprising:
(a) a cassette-type housing adapted for ceiling integration with a variable-diameter spiral channel for compressing and guiding airflow,
(b) a nozzle assembly including multiple outlet nozzles (A, B, C) at different angular positions with a rotation mechanism for selective airflow direction, and
(c) a heating chamber with a spiral heating coil and thermal storage medium,
wherein the system delivers extended directional airflow distribution beyond that of a conventional ceiling fan, with optional heating and humidity reduction.
2. The system of claim 1, wherein nozzle orientations are configured for layered airflow coverage,
(a) nozzle A delivers airflow at approximately 150° from the horizontal axis,
(b) nozzle B delivers airflow at approximately 50° from the horizontal axis and 35° offset from nozzle A, and
(c) nozzle C delivers airflow at approximately 90° from the horizontal axis and 40° offset from nozzle B.
3. The system of claim 1, wherein the nozzle assembly is rotatable through at least 80° relative to a reference axis,
(a) enabling remote focusing of airflow toward selected seating zones,
(b) reducing direct airflow impact on central areas such as dining tables, and
(c) creating personalized airflow coverage for multiple occupants simultaneously.
4. The system of claim 1, wherein the spiral channel geometry provides energy efficiency,
(a) compressing and distributing airflow at reduced motor speed,
(b) lowering electrical consumption relative to conventional ceiling fans, and
(c) maintaining airflow stability and noise reduction.
5. The system of claim 1, wherein the heating chamber is integrated with advanced thermal control,
(a) the spiral heating coil laminated around the chamber transfers heat into the airflow,
(b) a phase-change material (PCM) stores and releases thermal energy to maintain stable outlet temperature, and
(c) temperature modulation is optimized for user comfort and energy efficiency.
6. The system of claim 1, wherein a dry-heat humidity reduction mode is operable,
(a) supply air temperature is raised by 0.5 °C to 2 °C to reduce relative humidity without condensate formation,
(b) integrated temperature and humidity sensors provide feedback to a control unit, and
(c) the control unit modulates heater power and airflow to maintain a target humidity range.
7. The system of claim 1, wherein a multi-fragrance dispensing module is provided,
(a) comprising multiple fragrance channels converging into a central conduit, with a rotatable stepper-motor-driven barrier for selective alignment of channels,
(b) each channel housing a removable cartridge with a fibrous wick positioned in the bleed-air path for aroma entrainment, and
(c) sealing gaskets and electronic control prevent cross-contamination and allow automated or manual fragrance selection and intensity modulation.
8. The system of claim 1, further comprising an integrated multisensory ambience module,
(a) mood-wise lighting configured as a dynamic chandelier/jhoomer effect with programmable colors and intensities,
(b) a sound system configured to play nature ambience, instrumental music, or lullabies for sleep, and
(c) synchronized operation of light, sound, and fragrance in predefined mood modes such as Relax, Romantic, Baby Sleep, Energize, and Party.
9. The system of claim 1, wherein the cassette-type ceiling mounting provides enhanced safety and durability,
(a) eliminating hanging rotating blades to reduce mechanical wear, vibration, and bearing loss,
(b) improving aesthetics, space utilization, and occupant safety, and
(c) enabling modular installation and easy maintenance access through concealed panels with insect/fly’s barrier.
10. The system of claim 1, further comprising IoT-based smart control,
(a) operable via mobile application for real-time adjustment of airflow, fragrance, lighting, sound, and heating functions,
(b) compatible with smart assistants for voice activation and scheduled operation, and
(c) adaptive AI control configured to learn user preferences and automatically optimize multisensory comfort modes.
11. The system of claim 1, wherein the air purification function comprises a combined heating–UV-C sterilization sequence, wherein:
(a) a heating chamber raises the supply air temperature by 0.5–2 °C to reduce humidity and weaken airborne pathogens, and
(b) a downstream UV-C sterilization chamber irradiates the conditioned airflow with germicidal UV-C light, thereby achieving enhanced microbial neutralization efficiency while maintaining safe, energy-efficient operation.