DESC:FIELD OF DISCLOSURE

The present disclosure relates to filtering system for a Heating Ventilation and Air Conditioning systems.

BACKGROUND

An important part of vehicle air conditioning system, is an evaporator. Tropical climates are particularly detrimental for evaporators, as it causes problem of corrosion of evaporator tubes. Blower motor windings of the heating Ventilation and Air Conditioning (HVAC) system as well as the evaporator tubes of the Evaporator are made of aluminum material. Vehicles in tropical climates are typically exposed to dust containing sulphur and chlorine constituents, thereby making the evaporator tubes prone to corrosion resulting from reaction between the aluminium elements and the sulphur and chlorine constituents of dust. This problem of corrosion of the evaporator coils of the Evaporator is elevated when the HVAC system is run in prolonged ‘Fresh Air Circulation mode’ in a vehicle.

For preventing the dust and other polluting contaminants from entering the fresh air stream and impinging the evaporator coils of the evaporator, automobile HVAC’s are provided with an air filter that is disposed upstream of the evaporator for entrapping the dust carried with the air stream, thereby preventing the dust and sulphur and chlorine constituents of the dust from reaching the evaporator. The air filter generally used is a Pollen filter of 750 mesh size. Typically in tropical environments, vehicles are driven on dusty roads. This results in the filter being frequently clogged with dust and thus the fresh air supply to the evaporator is choked, thereby reducing the efficiency of the evaporator. Accordingly, the filter is required to be replaced frequently. Some vehicle manufacturers recommend changing the filter after certain time as part of vehicle maintenance to ensure that clean air enters the air stream and also to prevent the evaporator from corroding. Due to this the HVAC is designed to ensure accessibility of the filter for facilitating replacement during maintenance.

Accordingly there is a need for a system for maintenance of the evaporator. Further there is a need for a system that facilitates the removal of contaminants from the surface of the evaporator. Still further there is a need for a system that helps in containing corrosion on the surface of the evaporator.

OBJECTS

Some of the objects of the arrangement of the present disclosure are aimed to ameliorate one or more problems of the prior art or to at least provide a useful alternative and are listed herein below.

An object of the present disclosure is to provide a Heating Ventilation and Air Conditioning (HVAC) filter arrangement that ensures automatic cleaning of an air filter.

Yet another object of the present disclosure is to provide an HVAC filter arrangement that extends service life of a filter.

Another object of the present disclosure is to provide an HVAC filter arrangement that improves efficiency of a filter.
Another object of the present disclosure is to provide an HVAC filter arrangement that ensures efficient operation of a filter to ensure that clean air reaches the evaporator.

Still another object of the present disclosure is to provide an HVAC filter arrangement that ensures efficient operation of a filter, thereby preventing corrosion of the evaporator and extending service life of the evaporator.

Still another object of the present disclosure is to provide an HVAC filter arrangement that ensures efficient operation of a filter, thereby enabling the HVAC system to be used in ‘Fresh air mode’ for a prolonged period of time.

Other objects and advantages of the present disclosure will be more apparent from the following description when read in conjunction with the accompanying figures, which are not intended to limit the scope of the present disclosure.

SUMMARY

An HVAC filter arrangement for a vehicle, the arrangement comprising a filter and a vibrating base.

Typically, the vibrating base is in the form of pads adapted to provide controlled vibrations to the filter mounted thereon for dislodging dust particles trapped in the filter.

Typically, the filter arrangement further comprises a control system adapted to periodically induce vibrations in the vibrating base, the control system being mounted on a dashboard of a vehicle.

Furthermore, the control system comprises a switch to trigger vibrations in the vibrating base.

Additionally, the filter arrangement further comprises a sensor attached to an output side of the filter, the sensor adapted to measure air pressure of filtered air leaving the filter and further adapted to transmit a vibration signal to the control system to trigger vibrations in the vibrating base in the event of the air pressure falling below a pre-determined level.

Alternately, the vibrating base is adapted to be electro-magnetically vibrated.

Additionally, the filter arrangement further comprises an escape hatch disposed beneath the filter to collect the dust particles dislodged from the filter when the filter is vibrated.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS

A filter maintenance system will now be described with reference to the accompanying drawings, in which:

Figure 1 illustrates a front view of an HVAC filter arrangement for a vehicle in accordance with an embodiment of the present disclosure.
Figure 2 illustrates a perspective view of the HVAC filter arrangement for a vehicle in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION

The HVAC filter arrangement will now be described with reference to the accompanying drawings, which do not restrict the scope and ambit of the present disclosure. The description is provided purely by the way of illustration.

The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.

Figure 1 illustrates an HVAC filter arrangement for a vehicle.
In accordance with an embodiment of the present disclosure, the HVAC filter arrangement comprises a filter 102, an evaporator 106, and a vibrating base 104. The filter 102, is positioned adjacent the evaporator and is mounted on the vibrating base 104 for vibrating the filter 102 to dislodge the dust particles trapped in the filter 102, thereby preventing clogging of the filter 102 and ensuring supply of fresh air to the evaporator 106.

The filter 102 captures the dust to provide a fresh air stream to the evaporator 106. More specifically, the filter 102 removes dust particles and other impurities and contaminants from the air stream, thereby preventing the dust particles and contaminants from reaching the evaporator 106, and thus preventing the sulphur and chlorine constituents of the dust from coming in contact with the evaporator 106, and avoiding corrosion of the evaporator.

The filter 102 is mounted on the vibrating base 104. The vibrating base may be powered by the battery of the vehicle or an independent power source. Typically, the vibrating base 104 is in the form of pads and is of such configuration that the amplitude and frequency of the vibration of the pads, is enough to provide controlled vibrations to the filter 102 mounted thereon, thereby dislodging the dust particles trapped in the filter 102 and preventing clogging of the filter 102 to ensure supply of fresh air to the evaporator 106.

The vibration of the vibrating base 104 and thereby the filter 102, dislodges the dust particles captured in the filter 102. The dust particles dislodged from the filter 102 fall into an escape hatch beneath the filter 102. The escape hatch can be opened to release the dust in the ambient. The filter arrangement further comprises a control system mounted on a dashboard of the vehicle. The vibrating base 104, is made to vibrate at certain time intervals by means of the control system. Additionally, a sensor is attached to the output side of the filter 102. The sensor measures air pressure of filtered air leaving the filter 102. In the event of the air pressure dropping below a pre-determined level, the sensor transmits a vibration signal to the control system to trigger vibrations in the vibrating base 104. In accordance with one embodiment, the control system includes a Programmable Logic Controller (PLC). Furthermore, the control system includes a manual switch for vibrating the vibrating base 104. The activation of the manual switch triggers vibrations in the vibrating base. In accordance with another embodiment, the vibrating base 104 is vibrated electro magnetically.

TECHNICAL ADVANCEMENTS AND ECONOMIC SIGNIFICANCE

The filter maintenance system in accordance with the present disclosure has several technical advantages including but not limited to the realization of:
• ensuring automatic cleaning of an air filter of an HVAC system;
• extending service life of a filter of an HVAC system.
• improving efficiency of a filter of an HVAC system.
• ensuring efficient operation of a filter and ensuring that clean air reaches the evaporator.
• ensuring efficient operation of a filter, thereby preventing corrosion of the evaporator and extending service life of the evaporator.
• ensuring efficient operation of a filter, thereby enabling an HVAC system to be used in ‘Fresh air mode’ for a prolonged period of time.

Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.

The use of the expression “at least” or “at least one” suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the invention to achieve one or more of the desired objects or results.

The foregoing description of the specific embodiment will so fully reveal the general nature of the embodiment herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiment without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiment. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiment herein has been described in terms of preferred embodiment, those skilled in the art will recognize that the embodiment herein can be practiced with modification within the spirit and scope of the embodiment as described herein. ,CLAIMS:1) An HVAC filter arrangement for a vehicle, said arrangement comprising a filter and a vibrating base.

2) The filter arrangement as claimed in claim 1, wherein said vibrating base is in the form of pads adapted to provide controlled vibrations to the filter mounted thereto for dislodging dust particles trapped in the filter.

3) The filter arrangement as claimed in claim 1, further comprising a control system adapted to periodically induce vibrations in said vibrating base.

4) The filter arrangement as claimed in claim 3, wherein the said control system is mounted on a dashboard of a vehicle.

5) The filter arrangement as claimed in claim 3, wherein said control system comprises a switch to trigger vibrations in said vibrating base.

6) The filter arrangement as claimed in claim 1, further comprising a sensor attached to an output side of the filter, said sensor adapted to measure air pressure of filtered air leaving the filter and further adapted to transmit a vibration signal to said control system to trigger vibrations in said vibrating base in the event of the air pressure falling below a pre-determined level.

7) The filter arrangement as claimed in claim 1, wherein said vibrating base is adapted to be electro-magnetically vibrated.

8) The filter arrangement as claim in claim 1, further comprising an escape hatch disposed beneath the filter to collect the dust particles dislodged from the filter when the filter is vibrated.