WO2017180077A2

WO2017180077A2 - An air blower for vehicles

Info

Publication number: WO2017180077A2
Application number: PCT/TR2017/050144
Authority: WO
Inventors: Hasan Ayarturk; Harun YENI; Husnu Arda ODABASIOGLU; Seref Dedeoglu; Burcin KARSILAYAN; Yavuz DUSMEZKALENDER; Erdal KOKKULUNK; Alahattin CAN; Mustafa SIMSEK; Ridvan OZTURK; Ahmet ULUSOY
Original assignee: Tofas Turk Otomobil Fabrikasi Anonim Sirketi
Priority date: 2016-04-15
Filing date: 2017-04-13
Publication date: 2017-10-19
Also published as: WO2017180077A3

Abstract

The present invention relates to an air blower (1), which directs the air conditioned in the air conditioning systems used in the vehicles into the cabin, comprising at least one straight air direction valve which controls the speed of the upper air flow blown towards the bodies of the driver and the passengers, at least one direction changing valve which controls the speed of the lower air flow changing the flow direction of the upper air blown towards the bodies of the driver and the passengers, at least one upper acceleration nozzle (2) through which the upper air flow passes and is accelerated before being blown into the cabin, at least one lower acceleration nozzle (3) through which the lower air flow passes and is accelerated before being blown into the cabin, upper coanda surface (4) which enables the air inside the vehicle to be sucked and blown by the upper air flow by means of the coanda effect, lower coanda surface (5) which the lower air flow follows by means of the coanda effect, and which enables the upper air flow to be sucked and change direction towards down by creating vacuum by the lower air flow.

Description

DESCRIPTION

AN AIR BLOWER FOR VEHICLES

Field of the Invention

The present invention relates to an air blower for vehicles which enables the conditioned air to be blown in a desired direction and intensity into the vehicle cabin in air conditioning systems used in vehicles.

Background of the Invention

In order to enhance the comfort of the people inside the vehicle the air inside the air or the air taken from outside is processed in the air conditioning systems present in the vehicle and blown into the cabin. Processes such as heating, cooling, adjusting the humidity of the received air in these systems. After the air is conditioned, it is transferred to the blowers opening to the cabin via the air ducts, and blown into the cabin through these blowers. The air moves fast and in a pressurized way in these ducts.

The blowers enable the air to be directed in the cabin as desired and to be turned off if wanted and be able adjust its intensity. The blowers can be turned on and off by means of the mechanism thereon. Furthermore the guidance of the air is provided via the flaps.

The air is subjected to factors disrupting air flow until it comes to the blowers in the air conditioning systems. Phenomena such as heat loss/gain, pressure reduction, condensation, turbulence, noise are unavoidable due the reasons such as structure, form, length of the air ducts. Air ducts also take space, and increase the weight and cost of the vehicle.

Air blowers cause high pressure decrease during directing the air into the cabin sue to their complex structure. A stronger fan should be used in order to compensate the said pressure decrease and the air should be pressurized more, and this causes increase in fuel consumption. Complex mechanisms present in the air blowers increase the design and production costs. The complex appearance of the air blowers causes an untidy appearance on the dashboard in an unwanted way. The speed of the air in the blowers is determined via an air conditioner module. The blowers can only be turned on and off manually. Since there are generally turned on and off by hand, it is not possible for the driver to turn on or off the blower on the passenger side while travelling. Two compartment air conditioners are used in high cost luxurious vehicles. In these air conditioners, it is possible to control blower speeds, temperatures, however it is not possible to manage the blowers separately. A separate air duct should go to each blower from the air conditioner module in order to be able to control each one of the blowers, however it is not preferred since it will make a complex system more complex. United States Patent Document no US2010026034, an application known in the state of the art, discloses an air conditioning system without passenger blower by directing the defrost air to the passenger with Coanda effect by using the dashboard surface. In the disclosed system, air conditioning module and air ducts as in the current systems are used. The windscreen defrosting/demisting air is sent to the driver and the passengers through the dashboard surface. The up/down movement of the air sent to the passengers cannot be provided.

United States Patent Document no US5099752, another application known in the state of the art, discloses a cabin ventilation system with a Coanda nozzle. The disclosed system is transferred to the passenger by means of the Coanda nozzle from the vehicle roof apart from the dashboard. Cylindrical Coanda principle is used, direction is not mentioned.

Japanese Patent document no JP2005059807, an application known in the state of the art, discloses a heat exchanger wherein Coanda effect is used. The disclosed system is a heat exchanger. Heat transfer is provided by means of Coanda principle.

International Patent Document no WO2015094138, another application known in the state of the art, discloses an air blower which enablrs the air to be conditioned with cylindrical Coanda principle and the cabin to be ventilated. Even though aesthetic blowers the rear part of which is seen can be designed with cylindrical Coanda principle, air flow can be provided without seeing any blower by using linear Coanda principle in the inventive blowers.

The fluids moving by following an inclined surface is called as Coanda effect in the state of the art.

The fluids gaining speed while passing through a narrowing duct is called as venturi effect in the state of the art.

Summary of the Invention

The objective of the present invention is to provide an air blower wherein air can be directed without needing complex blowers in the vehicle air conditioning systems.

The objective of the present invention is to provide an air blower wherein occurrence of negative events such as pressure loss, turbulence experienced in air ducts are avoided.

Another objective of the present invention is to provide an air blower wherein the air can be directed without noise and effectively without needing a router.

Detailed Description of the Invention

An air blower developed to fulfill the objectives of the present application is illustrated in the accompanying figures, wherein Figure 1 is the outside perspective view of the inventive air blower.

Figure 2 is the cage view of the inventive air blower.

Figure 3 is the cross-sectional view of the inventive air blower.

The components shown in the figures are each given reference numbers follows:

1. Air blower

2. Upper acceleration nozzle

3. Lower acceleration nozzle

4. Upper coanda surface

5. Lower coanda surface

An air blower (1), which directs the air conditioned in the air conditioning systems used in the vehicle into the cabin, comprises

- at least one straight air direction valve which controls the speed of the upper air flow blown towards the bodies of the driver and the passengers,

- at least one direction changing valve which controls the speed of the lower air flow changing the flow direction of the upper air blown towards the bodies of the driver and the passengers,

- at least one upper acceleration nozzle (2) through which the upper air flow passes and is accelerated before being blown into the cabin,

- at least one lower acceleration nozzle (3) through which the lower air flow passes and is accelerated before being blown into the cabin,

- upper coanda surface (4) which enables the air inside the vehicle to be sucked and blown by the upper air flow by means of the coanda effect,

- lower coanda surface (5) which the lower air flow follows by means of the coanda effect, and which enables the upper air flow to be sucked and change direction towards down by creating vacuum by the lower air flow. When it is wanted to blow air in straight way, it is enabled to blow air into the cabin only by turning on the straight air direction valve. The flow rate of the air can be changed by adjusting the straight air direction valve. The air inside the cabin following the upper coanda surface (4) is sucked into the flow by means of the vacuum created by the upper air flow, and thus air circulation is provided in the cabin.

When the air flow is wanted to be directed downwards, the flow rate of the lower air is adjusted by turning on the direction changing valve. After the lower air flow is blown into the cabin, it directs downwards by following the lower coanda surface (5). The upper air flow is sucked downwards by means of the vacuum created by the lower air flow, and it is enabled to change its direction. Adjusting the lower flow intensity by means of the direction changing valve enables to change the direction of the air in a desired amount.

Claims

An air blower (1), which directs the air conditioned in the air conditioning systems used in the vehicles into the cabin, comprising

- lower coanda surface (5) which the lower air flow follows by means of the coanda effect, and which enables the upper air flow to be sucked and change direction towards down by creating vacuum by the lower air flow.