KIND OF AIR SUPPLY DEVICE

Description

CROSS REFERENCE TO RELATED APPLICATION

This application claims the priority of Chinese Patent Application No. 2024100512272, entitled “A Kind of Air Supply Device”, filed on Jan. 12, 2024, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to the field of air conditioning equipment, and particularly to an air supply device.

2. Description of Related Art

With the gradual advancement of society and continuous improvements in productivity, people are spending increasing amounts of time working and living indoors, with the majority of individuals now spending over 90% of their time in built environments. In office buildings, an uncomfortable thermal environment is one of the primary factors affecting the work efficiency of employee. During hot summers, if indoor ventilation is insufficient, the skin temperature of the human body rises, leading to thermal discomfort. At the same time, airborne infectious diseases pose a significant threat to human health. In densely populated areas, controlling the spread of airborne diseases is particularly challenging, as prolonged close contact facilitates the transmission of illnesses.

Air conditioning and ventilation systems can be used to provide cooling, thereby creating a favorable indoor thermal environment. However, current air conditioning systems still present several shortcomings: (1) In the presence of infectious individuals indoors, actions such as breathing, coughing, and sneezing can cause the rapid spread of viruses over short distances. If these viruses reach the breathing zone of healthy individuals, it may result in the transmission of infectious diseases, especially during the COVID-19 pandemic when the probability of infection is significantly increased. (2) Due to individual differences, each person's thermal sensation varies, and centralized air conditioning systems cannot meet the thermal comfort requirements of each occupant, making personalized control impossible. (3) Air conditioning systems typically do not adjust according to the number of occupants indoors, leading to unnecessary energy consumption.

SUMMARY OF THE INVENTION

In light of the limitations of existing technologies, the objective of this invention is to provide an air supply device capable of delivering personalized airflow, independently regulating the microenvironment around individuals, and reducing the infection probability because of disease transmission.

This invention could be achieved through the following technical solutions:

An air supply device comprising a seat body and an air supply module; the seat body includes a seat frame, where the seat frame has a box structure, and the cavity of the seat frame is hollow. The air supply module is housed within the cavity of the seat frame.

Air outlets are positioned along the side edges and the rear edge of the upper surface of the seat frame, with grills installed at the air outlets.

Preferably, the upper surface of the seat frame is equipped with a backrest, and the air outlet at the rear edge of the upper surface is located behind the backrest.

The air supply module preferably consists of a housing and a fan; the bottom panel of the housing is located at the opening at the base of the seat frame, and an air inlet is situated on the bottom panel. The fan is positioned in the upper section of the housing, and the top of the housing serves as the air outlet.

Additionally, a filter is placed inside the housing, located below the fan.

A vibration damping device is further installed below the filter to minimize operational vibrations from the fan. The bottom panel of the housing is shaped as a concave surface to increase the intake area.

Inside the seat frame, a horizontal partition divides the cavity into an upper first chamber and a lower second chamber. The bottom panel of the housing is positioned at the base of the second chamber, and the top of the housing extends through the partition into the first chamber, with the fan located within the first chamber. A DC circuit board and a battery compartment are installed in the second chamber, and the battery powers the fan via the DC circuit board. A charging port for the battery is located at the lower right corner of the front side of the seat frame.

Preferably, sound-absorbing materials are applied to the inner surface surrounding the first chamber to reduce noise.

A perforated plate is horizontally installed inside the seat frame above the air supply module to ensure even distribution of airflow.

The front side of the seat frame is equipped with an electric radiant heating panel to provide warmth to the legs in winter, with adjustable heating levels to accommodate individual thermal comfort needs.

Compared to existing technologies, this air supply device offers the following advantages:

By positioning air outlets along the side and rear edges of the upper surface of the seat frame, the air supply module delivers cooling airflow through these outlets, effectively removing heat generated from the occupant's back and seat. This targeted ventilation improves thermal comfort directly in the occupied zone. The inclusion of adjustable grills allows occupants to freely control airflow, enhancing personal comfort and achieving personalized air delivery for independent microenvironment regulation. More importantly, when airflow velocity is high, an upward air curtain is formed on either side and behind the occupant's body. This air curtain effectively blocks pollutants emitted by surrounding individuals, ensuring the quality of inhaled air and reducing the risk of infectious disease transmission. At the same time, the system meets the requirements of thermal comfort and health. The air supply device delivers high-velocity air through narrow outlets, which, due to its high momentum, entrains surrounding air, thereby significantly reducing airflow velocity. This increases the volume of supplied air without causing draught, thus reducing the system's intake air volume, saving energy, and minimizing the device's size. The overall structure is compact and easy to install.

Furthermore, by placing the air inlet at the base of the seat frame, the device can introduce cool, clean air from the lower region of the room. Given the higher density of cold air, it can diffuse across the floor to form an “air layer,” commonly produced by displacement ventilation or other auxiliary ventilation methods. Clean, cool air is directly supplied around the occupant, lowering the ambient air temperature and improving the quality of inhaled air.

The inclusion of a filter removes pollutants from the intake air, providing clean, fresh air for the occupant.

The vibration damping device reduces vibrations caused by the fan, ensuring smooth operation.

The concave-shaped bottom panel of the housing ensures a larger intake area, reducing disturbance around the occupant's ankles while maintaining thermal comfort.

A partition divides the cavity into an upper first chamber and a lower second chamber, with the battery housed in the second chamber and the fan in the first chamber. This arrangement prevents potential damage to the battery from high airflow velocities during operation.

The use of sound-absorbing material further mitigates noise generated by the fan during operation.

The perforated plate ensures an even distribution of airflow at the outlets.

The electric radiant heating panel on the front side of the seat frame allows for adjustable radiant heating of the occupant's legs in winter, catering to individual thermal comfort preferences.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural view of the internal structure of the air supply device in this invention.

FIG. 2 is a schematic structural of the structure of the air supply module in the air supply device of this invention.

FIG. 3 is a schematic structural of the external structure of the air supply device in this invention.

FIG. 4 is a schematic diagram view of the electric radiant heating panel in the air supply device of this invention.

In the figures: 1—Seat body, 2—First chamber, 3—Partition, 4—Second chamber, 5—Sound-absorbing material, 6—Housing, 7—Perforated plate, 8—DC circuit board, 9—Battery compartment, 10—Fan, 11—Vibration damping device, 12—Filter, 13—Air inlet, 14—Grill, 15—Electric radiant heating panel

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the following, with reference to accompanying drawings of embodiments of the invention, technical solutions in the embodiments of the invention will be clearly and completely described. Apparently, the embodiments of the invention described below only are a part of embodiments of the invention, but not all embodiments. Based on the described embodiments of the invention, all other embodiments obtained by ordinary skill in the art without creative effort belong to the scope of protection of the invention.

Embodiment 1

An air supply device comprises a seat body (1) and an air supply module. The seat body (1) includes a seat frame, with legs at the bottom of the frame, and a backrest on its upper surface. The seat frame has a box structure with a hollow cavity, which is horizontally divided by a partition (3) into an upper first chamber (2) and a lower second chamber (4).

The air supply module is located within the cavity of the seat frame and includes a housing (6), a filter (12), and a fan (10). The bottom of the housing (6) is positioned at the base of the second chamber (4), while the top of the housing (6) passes through the partition (3) and extends into the first chamber (2). The bottom panel of the housing (6) is perforated with uniformly distributed circular holes, serving as the air inlets (13). The bottom panel is curved with a radius of curvature between 4.49 and 4.69, with hole diameters ranging from 5 mm to 10 mm, a hole spacing of 5 mm, and an perforated ratio of 0.25 to 0.51. A filter (12) is positioned above the bottom panel of the housing (6), designed to filter out pollutants from the intake air. The filter is a replaceable type with baffles for easy replacement. The top of the housing (6) serves as the air outlet. The function of the bottom panel of the housing (6) is to ensure uniform air intake by the fan and to prevent lower airflow disturbances from causing discomfort to the user. The concave shape of the bottom panel ensures a larger intake area, resulting in relatively lower airflow velocity even with large air volume intake, thereby avoiding significant disturbances at the occupant's ankle and ensuring thermal comfort.

The upper part of the housing (6) is equipped with a fan (10), which is positioned within the first chamber (2). A vibration damping device (11) is installed inside the housing (6), located beneath the filter (12) and connected to the seat frame. The vibration damping device (11) is connected to both sides of the seat frame, allowing the air drawn in through the inlet to bypass the vibration damping device (11) and reach the filter (12). The fan (10) provides the power needed to draw air into the housing (6). The fan has an adjustable airflow rate ranging from 0 to 60 L/s, with the airflow direction directed toward the first chamber area. The purpose of the vibration damping device (11) is to reduce vibrations generated during the operation of the fan (10).

A perforated plate (7) is horizontally installed within the first chamber (2), positioned above the housing (6), and is used to evenly distribute the airflow provided by the fan. The holes in the perforated plate (7) have diameters ranging from 5 mm to 10 mm, a hole spacing of 5 mm, and a perforated ratio of 0.25 to 0.51.

Sound-absorbing material (5) is applied to the inner surface of the first chamber (2) to absorb the noise generated during the operation of the fan (10). The sound-absorbing material is made of rubber-plastic foam.

The second chamber (4) contains a DC circuit board (8) and a battery compartment (9), which houses the batteries. The batteries supply power to the fan (10) via the DC circuit board (8). A charging port is provided at the bottom right front of the seat frame for easy charging of the batteries. The partition (3) isolates and protects the batteries and DC circuit board (8), preventing damage from excessive airflow during operation, and facilitates the secure mounting of the fan to the seat frame.

Air outlets are located at the side and rear edges of the upper surface of the seat frame, with grills (14) installed at each outlet. The front edge of the seat frame has no air outlet to avoid direct airflow toward the feet, preventing discomfort. The rear air outlet is positioned behind the backrest. The grills (14) are adjustable, allowing users to independently set the angle of the grills to control the airflow according to personal needs. The dimensions of the grill area are 0.31 m×0.03 m, with a rotational range of 0° to 190°.

Usage Process of the Air Supply Device in Embodiment 1:

In the operation of the air supply device described in Embodiment 1, indoor air enters the housing (6) through the inlet (13) located at the bottom of the housing (6). After passing through the inlet (13), the air is filtered by the filter (12). The fan (10), installed in the sealed upper space of the housing (6), then accelerates the filtered air, which flows out from the outlet at the top of the housing (6) and into the first chamber. The air then directly flows towards the air outlets located at the sides and rear of the seat frame, discharging upward to remove heat generated by the occupant seated on the seat body, thereby achieving a cooling effect. Simultaneously, the air discharged from the outlets forms an upward airflow curtain, which effectively blocks surrounding pollutants from spreading into the occupied zone, ensuring the quality of the inhaled air. Due to the high velocity of the airflow discharged from the air outlets, it can entrain the surrounding air, reducing the discharge velocity at the outlets while increasing the air supply volume. Consequently, the inlet (13) only needs to draw in a small volume of air, achieving energy-saving effects and significantly reducing the overall size of the air supply device. This device features a compact structure, easy installation, and high operational efficiency.

Embodiment 2

The personalized air supply device can be integrated with background air supply systems. When using the personalized air supply device in conjunction with background ventilation systems, such as displacement ventilation, cool fresh air enters the room from the outlets of the background system and sinks to the lower part of the room, forming an “air layer.” This cool fresh air is then drawn into the air supply device through the inlet (13) by the action of the fan (10). After being filtered by the filter (12) to remove contaminants, the air flows upward from the fan (10) and into the first chamber (2). The first chamber (2) is connected to the grills (14) located at the sides and rear of the device, allowing the cool airflow to be blown upwards from these grills towards the occupant, thereby directly lowering the air temperature in the immediate vicinity and improving the air quality in the working zone.

Moreover, when the velocity of the airflow discharged from the device is high, it also effectively creates a barrier against pollutants.

Embodiment 3

Based on Embodiment 1, this embodiment further includes an adjustable electric radiant heating panel (15) on the front side of the seat frame. The electric radiant heating panel (15) is made of a silicone rubber heating plate. During winter, the radiant heating panel (15) provides localized radiant heating to the legs of the occupant seated on the seat body, increasing the surface temperature of the legs and reducing cold discomfort. The electric radiant heating panel (15) is adjustable, allowing users to freely regulate the heating intensity to meet their comfort needs.