DESC:FIELD OF THE DISCLOSURE

The present disclosure relates to the field of holders for motors.

BACKGROUND

An HVAC (Heating, Ventilation and Air Conditioning) system includes a heating element and/or a cooling element and a blower for directing air over the heating/cooling element for subsequent delivery to a building, room, or other areas serviced by the HVAC system.

There are typically two types of blower motors utilized in HVAC systems, namely,

1) Brush top type motors, and
2) Brush bottom type motors.

The blower motor of the HVAC system is supported on a holder which is categorized into an open type holder and a closed type holder. The basic function of the holder is to enable vibration isolation and cooling of the motor. The open type holder for the blower motor fails to restrict entry of dust and foreign particles from the atmosphere into the motor or particles coming out from the motor due to wear, and entering into air flow path of the HVAC system. This leads to deterioration of the evaporator and other parts of the HVAC system.

In order to overcome the shortcomings of the open type holder for the blower motor, the closed type holder was introduced. Conventional closed type holders include an enclosure for housing the heating/cooling element and the blower there within. The enclosure is in fluid communication with an inlet duct and an outlet duct. The enclosure isolates the blower motor from vibration, dust and foreign particles. However, conventional closed type holders cause overheating and subsequently deterioration of the motor and their parts, thus resulting in reduction in the service life of the blower motors.

Hence, there was felt a need for a holder which overcomes the drawbacks of conventional closed type holders.

OBJECTS

Some of the objects of the system of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide a holder for protection of a blower motor from dust and foreign particles.
Another object of the present disclosure is to provide a holder which prevents damage to the motor due to over-heating.
Yet another object of the present disclosure is to enable vibration isolation between the motor and the holder.
An added object of the present disclosure is to increase the service life of the motor.
Still another object of the present disclosure is to provide a holder that keeps the motor and its parts cool.

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

A holder for a blower motor includes a top element, a bottom element and an end cover. The top and bottom elements cooperate to define an enclosure; means to mount the blower motor within the enclosure. An outlet duct is attached to the enclosure. An inlet duct leads into the enclosure for introducing cold air to the enclosure and a plurality of air passages are defined within the enclosure cooperating with the inlet duct to split cold air introduced through the inlet duct into the passages before being led out of the enclosure via the outlet duct.

Typically, the holder further includes a de-coupling element for preventing the motor from directly contacting the inner walls of the enclosure.

Generally, the holder includes an adaptor which prevents the motor from being displaced during operation.

Typically, the enclosure is symmetrical.

In accordance with another embodiment, the holder is hemispherical.

Typically, the holder is used for holding a brush top type motor.

Alternatively, the holder is used for holding a brush bottom type motor.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS

The blower motor holder of the present disclosure will now be described with the help of accompanying drawings, in which:

Figure 1 illustrates a perspective view of one embodiment of the holder in accordance with the present disclosure;

Figure 2 illustrates a side view of the embodiment of the holder shown in Figure 1;

Figure 3 illustrates a sectional view of the embodiment of the holder shown in Figure 2 along the section line A-A;

Figure 4 illustrates a rear view of the embodiment of the holder shown in Figure 1;

Figure 5 illustrates another sectional view of the embodiment of the holder shown in Figure 4 along the section line B-B;

Figure 6 illustrates a side view of another embodiment of the holder in accordance with the present disclosure;

Figure 7 illustrates a sectional view of the embodiment of the holder shown in Figure 6 along the section line X-X, depicting direction of flow of air within the holder; and

Figure 8 illustrates rear view of the embodiment of the holder shown in Figure 6, depicting direction of flow of air within the holder.

DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS

A preferred embodiment of the blower motor holder of the present disclosure will now be described in detail with reference to the accompanying drawings. The preferred embodiment does not limit the scope and ambit of the disclosure. The description provided is purely by way of example and 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 to Figure 5 of the drawings relate to an embodiment of a holder (10) for a blower motor (12), wherein the blower motor (12) is a brush top type motor. In accordance with another embodiment, the holder (10) is used for holding a brush bottom type motor. The holder (10) includes an operative top element (14), an operative bottom element (16) and an end cover (22) for supporting the blower motor (12). The top element (14) cooperates with the bottom element (16) to define a cylindrical enclosure having an opening for attachment of an outlet duct (20) thereon and an inlet duct (18). Typically, the enclosure formed by co-operation between the top and bottom elements is symmetrical. The blower motor (12) is mounted within the cylindrical enclosure. More particularly, the enclosure includes means for mounting the blower motor within the enclosure. One end of the cylindrical enclosure is closed with the end cover (22). The blower motor (12) is mounted within the cylindrical enclosure.

The inlet duct (18) allows cold air from a scroll into the cylindrical enclosure of the holder (10) housing the motor (12). The cylindrical enclosure has a plurality of air passages defined there within and cooperating with the inlet duct to split and channelize the cold air flowing in through the inlet duct (18) on the motor shell, the brush and the rotor of the blower motor (12), as illustrated in Figure 3 and Figure 5. The cold air passing over the blower motor (12) absorbs the heat generated by the blower motor (12) and is diverted towards the outlet duct (20) by the end cover (22). This results in cooling of the blower motor (12) and its parts, thus increasing the service life of the blower motor (12). The temperature of the cold air on absorbing the heat from the blower motor (12) is increased to a temperature substantially higher than the cold air. The warm air from the enclosure is expelled through the outlet duct (20). At least one de-coupling element (not shown in the Figures) is provided within the enclosure so as to eliminate direct contact of the blower motor (12) with the holder (10), particularly with the inner walls of the enclosure. The de-coupling element (not shown in the Figures), prevents the vibrations from the blower motor (12) from being transferred to the holder (10). The blower motor (12) is held in position within the holder (10) by an adaptor (not shown in the Figures) to prevent displacement of the blower motor (12) during operation.

In accordance with another embodiment of the present disclosure, illustrated in Figure 6 to Figure 8, there is provided a holder (100) for supporting a blower motor (112), wherein the blower motor (112) is a brush bottom type motor. The holder (100) includes a top element (114) cooperating with a bottom element (116) to define a hollow hemispherical enclosure. The hemispherical enclosure has an inlet duct (118) and an outlet passage (120) for entry of cold air and exit of warm air respectively. The holder (100) helps in protecting the blower motor (112) mounted within the hemispherical enclosure from dust and foreign particles.

The inlet duct (118) allows cold air from a scroll into the hemispherical enclosure of the holder (100) housing the motor (112). The hemispherical enclosure has a plurality of air passages defined there within to split and channelize the cold air flowing in through the inlet duct (118) on the motor shell, the brush and the rotor of the blower motor (112), as illustrated in Figure 7 and Figure 8. The cold air passing over the blower motor (112) absorbs the heat generated by the blower motor (112) and is diverted towards the outlet passage (120) which results in cooling of the blower motor (112) and its parts. The temperature of the cold air on absorbing the heat from the blower motor (112) is increased to a temperature substantially higher than the cold air. The warm air from the enclosure is expelled through the outlet passage (120). At least one de-coupling element (124), illustrated in Figure 6, is provided within the hemispherical enclosure so as to eliminate direct contact of the blower motor (112) with the holder (100). The de-coupling element (124) prevents the vibrations from the blower motor (112) from being transferred to the holder (100). The blower motor (112), during operation, is held in position within the holder (100) by an adaptor (126).

Thus, the holders (10 and 100), besides isolating vibrations and protecting the blower motor (12 and 112) from dust, helps in preventing damage to the blower motor (12 and 112) due to overheating and consequently increases the service life of the blower motor (12 and 112).

TECHNICAL ADVANCEMENTS

The technical advancements offered by the present disclosure include the realization of:
• protecting a blower motor from dust and foreign particles;
• cooling the blower motor and its parts;
• prevention of damage to the blower motor due to over-heating;
• increasing the service life of the blower motor; and
• vibration isolation between the blower motor and the holder.
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 disclosure to achieve one or more of the desired objects or results.

The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments 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 embodiments. 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 embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein. ,CLAIMS:1. A holder for a blower motor comprising a top element, a bottom element and an end cover, the top and bottom elements cooperating to define an enclosure; means to mount the blower motor within said enclosure; an outlet duct attached to the enclosure; an inlet duct leading into the enclosure for introducing cold air to said enclosure and a plurality of air passages defined within said enclosure cooperating with the inlet duct to split cold air introduced through the inlet duct into the passages before being led out of the enclosure via the outlet duct.

2. The holder as claimed in claim 1 further comprising a de-coupling element for preventing the motor from directly contacting the inner walls of the said enclosure.

3. The holder as claimed in claim 1 further comprising an adaptor which prevents the motor from being displaced during operation.

4. The holder as claimed in claim 1 wherein the enclosure is symmetrical.

5. The holder as claimed in claim 1 wherein the holder is hemispherical.

6. The holder as claimed in claim 1, for use in holding a brush top type motor.

7. The holder as claimed in claim 1, for holding a brush bottom type motor.