RU2357874C1 - Vehicle heating-and-ventilation system - Google Patents

Abstract

FIELD: ventilation systems.

SUBSTANCE: invention relates to the field of vehicle engineering immediately dealing with the issues of ventilation, saloon heating and provision for maintenance of comfortable conditions inside a vehicle. The proposed heating-and-ventilation system contains ventilation installation (1) positioned on the side of heater (3) housing (4) accommodating a heat exchanger, operational damper (8) for control of heater (3) with rotary axle (9) and mixing chamber (11) connected to the saloon air ducts. On operational damper (8) upper surface there is louver (12) mounted represented by an air duct with its open lateral part turned towards ventilation installation (1) and its rear open part turned towards mixing chamber (11). Along louver (12) side wall there is spoiler (13) arranged shaped as a curvilinear gill. Mixing chamber (11) is designed as displaced with relation to heater (3) housing (4) side walls.

EFFECT: air flux speed and temperature balancing at the heater output towards the distributor device of the dash fascia and the saloon air ducts within all the ranges of the heating-and-ventilation system modes regulation.

5 cl, 7 dwg

Description

The invention relates to the field of transport engineering, namely to ventilation, heating the passenger compartment and creating comfortable conditions in vehicles, for example in cars.

The closest technical solution to the claimed design is a device for the heating and ventilation system of the vehicle interior (prototype - RF patent No. 2178744, class B60H 1/12, publication of January 27, 2002, bull. No. 3), containing a fan unit located on the side of the heater body, in which the heat exchanger is located, a working heater control damper with a remote axis of rotation and a mixing chamber with access to the interior air ducts. A rib-turbulator is located vertically on the working flap, which provides a disruption of the air flow creating turbulization.

The disadvantage of this device is that the rib-turbulator located across the ventilation channel reduces its cross-section and usable area for the passage of air flow, thereby deteriorating the flow-pressure characteristics and creates additional noise when the air flow passes, at the outlet of the heater mixing chamber throughout the cross section of the exit window, the air flow is not aligned in speed and temperature; as a result, a more intense air with a lower temperature current, and in the passenger side, on the contrary, similarly to the blowing of the windscreen.

The objective of the invention is to equalize the speed and temperature of the air flow at the outlet of the heater to the switchgear of the instrument panel and further to the air ducts of the cabin in all ranges of regulation of the modes of the heating and ventilation system.

To solve this problem, a vehicle’s heating and ventilation system is proposed, comprising a fan unit located on the side of the heater body, in which a heat exchanger, a working heater control damper with an axis of rotation, and a mixing chamber are made, which is offset from the side walls of the heater body and has an outlet to the air ducts salon. On the upper surface of the working flap, a guide apparatus is made in the form of an air duct facing the open side to the fan unit, and the rear open part to the mixing chamber, also along the side of the guide apparatus there is a spoiler formed in the form of a curved rib and part of which is made outside working flap relative to its axis of rotation.

Comparison of the claimed technical solution with the prior art in scientific, technical and patent documentation as of the priority date in the main and related sections shows that the set of essential features of the claimed solution was not known - therefore, it meets the patentability condition of “novelty”.

The analysis of known technical solutions in the art showed that the proposed device has features that are not available in the known technical solutions, and using them in the claimed combination of features makes it possible to obtain a new technical effect, therefore, the proposed technical solution has an inventive step compared to the existing level technicians.

The proposed technical solution is industrially applicable, because can be manufactured industrially, efficiently, reproducibly, therefore, meets the patentability condition “industrial applicability”.

The essence of the technical solution is illustrated in the drawings.

Figure 1 - General view of the system;

Figure 2 - section aa;

Figure 3 - cross section of the heater in ventilation mode;

Figure 4 - cross section of the heater in heating mode;

Figure 5 - cross section of the heater in intermediate mode;

6 is a General view of the working valve;

7 is a General view of the heater.

The vehicle’s heating and ventilation system includes a fan unit (1), an air purification filter (2) and a heater (3), which consists of a housing (4) in which a heat exchanger (5) is installed, a damper (14) of the heating channel, a chamber (7) for air intake, in which a working valve (8) for controlling the heater with an axis of rotation (9) and an arcuate rib (10) is located, also in the heater body (4) there is a mixing chamber (11) with access to the interior air ducts.

In order to equalize the air flow velocity and the temperature field on the upper surface of the working flap (8), closer to the axis of rotation (9), a guide apparatus (12) is installed in the form of an air duct, one of its sides is open and facing the fan unit (1) and the back open portion faces the mixing chamber (11). The other side, as well as the front and upper parts of the duct (12) are made closed in the form of walls. The front and side walls of the duct are mated along a radius, the value of which is sufficient for a smooth change in the direction of the air flow. Between the side wall of the air duct (12) and the heater case (4), on the upper surface of the working damper (8), closer to the case wall opposite the fan unit (1), a spoiler (13) is made for a smooth change in the direction of the air flow. The spoiler (13) is made in the form of a curved rib, part of which is outside the working flap (8), relative to its axis of rotation.

On the upper and side walls of the housing (4) there is an arcuate rib (10), made with a minimum constant clearance to the front edge of the working flap (8) during its operation. At the exit of the heating channel, under the heat exchanger (5), there is a channel shutter (14), which is kinematically connected with the heater control working shutter (8) to synchronize the operation of the shutters in various operating modes of the system.

A curved cutout (15) is made on the side wall of the heater body (4) facing the fan unit (1), which coincides in shape with the contour of the open side of the duct (12) while combining the front edge of the working flap (8) and the cut of the arcuate rib ( 10), which corresponds to 1 / 4-1 / 3 of the stroke of the working flap. The arcuate rib (10) and the edges of the curved notch (15) in the side wall of the housing (4) turbulent the air flow, which contributes to its more efficient mixing in the chamber (11) in the intermediate modes of the system.

For optimal alignment with the speed and temperature of the airflow directionally changed, the mixing chamber (11) is offset from the side walls of the heater body (4).

In the ventilation mode (Fig. 3), the working damper (8) completely covers the surface of the heat exchanger (5) and the ventilation channel opens, and the damper (14) closes the channel under the heat exchanger, and the air flow freely passes through the mixing chamber (11) to the interior air ducts, the edges of the side curly notch (15) and the arcuate rib (10) turbulent the air flow.

In the heating mode (Fig. 4), the working flap (8) is in its highest position, blocking the channel from the chamber (7) of the air into the mixing chamber (11), while the flap (14) is in the open position, so that the air flow moves through the heat exchanger (5), heating goes into the mixing chamber (11) and then to the switchgear and the air ducts of the passenger compartment.

In the intermediate mode, during the operation of the working flap (8) from the maximum heating mode, only the entrance to the guiding apparatus (12) (Fig. 5) opens for ventilation air, while the guiding apparatus fully opens when combined with a curly cutout (15) in the side the wall of the heater body (4), which corresponds to 1 / 3-1 / 4 of the stroke of the working flap (8), which allows you to press the ventilation flow of air to the side wall of the body (4) and mix it with air from the heat exchanger in the mixing chamber (11). In addition, the damper (14) of the heater channel directs the heated air flow at right angles to the ventilation flow, which contributes to efficient mixing of the air flow.

Thus, the use of a guiding apparatus (12) and a spoiler (13) allows one to reduce aerodynamic drag with a smooth change in the direction of the air flow when it enters the mixing chamber (11), and to obtain a more uniform speed in the outlet of the heater (3) over the entire cross section of the channel and temperature, air flow over the entire control range.

Claims (5)

1. The vehicle’s heating and ventilation system comprises a fan unit located to the side of the heater body, in which a heat exchanger is located, a heater control flap with an axis of rotation, and a mixing chamber having an exit to the passenger air ducts, characterized in that a guide apparatus in the form of an air duct facing the open side to the fan unit, and the rear open part to the mixing chamber, also along the side wall a spoiler is arranged in the form of a curving apparatus, which is formed in the form of a curved rib, and the mixing chamber is offset from the side walls of the heater casing. 2. The heating and ventilation system of the vehicle according to claim 1, characterized in that the part of the spoiler is made remote outside the working damper relative to its axis of rotation. 3. The vehicle’s heating and ventilation system according to claim 1, characterized in that an arcuate rib is located in the heater body, made with a minimum constant clearance with the leading edge of the working flap. 4. The vehicle’s heating and ventilation system according to claim 1, characterized in that the heating channel under the heat exchanger is blocked by a channel shutter kinematically connected to the working shutter. 5. The vehicle’s heating and ventilation system according to claim 1, characterized in that a cutout is made in the side wall of the heater body.

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