RU212464U1 - Vehicle heater - Google Patents

Abstract

The utility model relates to the field of transport, namely to heaters intended for heating the passenger compartment or driver's cabin of a vehicle (car). The heater for the vehicle contains a housing (1), in which a liquid heat exchanger (2) and a centrifugal electric fan (3) are installed, placed with the possibility of radial output from the housing (1) of the air heated by the heat exchanger (2). In this case, the body contains a wall (6) having a zone (12) with holes of a cellular structure for the outlet of heated air. EFFECT: reduced noise level during heater operation while maintaining heating performance. 7 w.p. f-ly, 2 ill.

Description

[01] Field of technology

[02] The utility model relates to the field of transport, namely to heaters designed to heat the passenger compartment or driver's cabin of a vehicle (car).

[03] State of the art

[04] From the prior art, designs of heaters for vehicles are widely known, including a housing in which a liquid heat exchanger (radiator) and an electric fan adjacent to it are installed (see, for example, RF patent RU 174795, 02.11.2017). These designs use axial fans to draw air out of the top or side of the case. The disadvantage of these devices is the low efficiency of interior heating due to unidirectional air supply, which leads to the need to use more heaters and increase the fan speed. At the same time, centrifugal fans themselves have a fairly high noise level, and with an increase in the impeller speed, the situation is aggravated.

[05] The closest analogue of the utility model is a heater for the interior of the vehicle, disclosed in the French patent application FR 1409936 A, 09/03/1965 (hereinafter - D1). Said device comprises a housing in which a liquid heat exchanger and a radial (centrifugal) electric fan adjacent to it are installed. Said electric fan is placed with the possibility of radial outlet of heated air through the outlet holes in the side of the housing, formed by a rotating guide in the form of a snail, which forms the output flow in one or two directions. The use of a centrifugal electric fan, which provides a radial outlet of heated air from the case, makes it possible to increase the heating efficiency with a relatively quiet operation of the device, in relation to axial fans. However, the rotating guide creates turbulent outflows of air that still create an uncomfortable noise in the vehicle interior.

[06] Disclosure of the utility model

[07] The objective of the utility model, which defines the technical problem, is to develop an efficient and quiet device for heating the passenger compartment of a car.

[08] The technical result of the utility model is to reduce the noise level during operation of the heater while maintaining the heating performance.

[09] The specified technical result is achieved in the utility model due to the fact that the heater for the vehicle contains a housing in which a liquid heat exchanger and a centrifugal electric fan are installed, placed with the possibility of radial output from the housing of the air heated by the heat exchanger. In this case, the housing contains a wall having a zone with holes of a cellular structure for the exit of heated air.

[010] According to particular embodiments of the utility model:

[011] - the body is made in the form of a rectangular parallelepiped and contains four walls, at least one of which has the specified zone with holes of a cellular structure,

[012] - the body consists of connected upper and lower parts,

[013] - a zone with holes of a cellular structure is formed by notches of the body wall,

[014] - a zone with holes of a cellular structure is placed opposite the blades of the electric fan.

[015] - the liquid heat exchanger has inlet and outlet pipes for the coolant, an air vent screw and an external electrical connector for connecting power,

[016] - the liquid heat exchanger is located in the lower part of the body and is equipped with a top panel with a diffuser, on which an electric fan is installed,

[017] - the electric fan has an electronically controlled brushless electric motor and an external electrical connector for connecting power

[018] The use of a centrifugal electric fan in the claimed device in combination with a liquid heat exchanger makes it possible to increase the heating performance (compared to an axial fan) and, as a result, use a lower impeller speed, which leads to a decrease in the noise level during heater operation. At the same time, unlike the closest analogue, in the heater under consideration, heated air is removed from the housing directly from the blades of the electric fan through holes of a cellular structure made in the wall. This allows the output flow to be dispersed and made more uniform (laminar) than designs using additional guiding means, resulting in quieter operation of the unit. Thus, all these features of the utility model are aimed at achieving a single technical result, which consists in reducing the noise level of the heater.

[019] In addition, in the considered design, the efficiency and uniformity of interior heating with a smaller number of heaters is increased due to the possibility of air supply in several directions (from two to four, depending on the configuration of the walls).

[020] Brief Description of the Drawings

[021] The utility model is illustrated by the figures, where:

[022] In FIG. 1 shows a general view of the heater,

[023] In FIG. 2 shows the design of the heater.

[024] The structural elements are indicated in the figures by the following positions:

1 - body,

2 - liquid heat exchanger,

3 - electric fan,

4 - lower part of the body;

5 - body base,

6 - body wall,

7 - upper part of the body,

8 - housing cover,

9 - pipes of the heat exchanger,

10 - screw for air venting of the heat exchanger,

11 - heat exchanger panel,

12 - zone with holes of a cellular structure,

13 - electrical connector.

[025] Implementation of the utility model

[026] The declared heater as the main structural elements includes a housing (1), a liquid heat exchanger (radiator) (2) and a centrifugal (radial) electric fan (3).

[027] The body (1) preferably has the shape of a rectangular parallelepiped. In this case, the body (1) may consist of a lower U-shaped part formed by a horizontal base (5) and two vertical walls (6), as well as an upper part (7) formed by a horizontal cover (8) and two walls (6). It is possible to make the body of a different shape, for example, cylindrical. In this design, the housing (1) will have a single cylindrical wall (6).

[028] On the basis (5) there is a liquid heat exchanger (2) having inlet and outlet pipes (9) for the coolant and a screw (10) for de-airing (air venting).

[029] On top of the heat exchanger (5) has a panel (11) with a diffuser. Mounted on said panel (1) is a centrifugal (radial) electric fan (3) rotating in a plane parallel to the base (5). Said electric fan preferably uses an electronically controlled brushless (brushless) electric motor. Unlike a brushed motor, a brushless motor has a lower noise level, has the ability to steplessly adjust the speed of rotation (more precisely regulate the temperature in the cabin), and is also safer in terms of the possibility of fire if the fan impeller is mechanically blocked even if the protection fails. The electric fan is powered through an external sealed electrical connector (13) located on the wall (6).

[030] In the upper part of at least one wall (6) opposite the electric fan (3) there is a zone (12) with holes of a cellular structure for dispersing the flow of outgoing air. In a preferred embodiment of the utility model, said zone (12) is formed by a perforation of the sheet with the formation of regular, horizontally elongated holes (see Figs. 1 and 2). This configuration provides the most uniform flow while minimizing noise. It is also possible to perform this zone by perforating the sheet or installing a grid or grid with holes of various shapes.

[031] The zone (12) with holes of the honeycomb structure can be made on one, two, three or four sides of the housing (1) depending on the location of the heater. In particular, figures 1 and 2 show a housing in which there are three walls (6) with holes for air outlet, and one of the walls (6) is blind. In the case of using a cylindrical housing wall, the zone (12) can be made locally on one or more sides.

[032] The heater is used as follows.

[033] To install the heater, a suspended open mounting of the housing is carried out inside the passenger compartment or cabin of the vehicle. The electrical connector (13) is connected to the on-board electrical network with a voltage of 24 V, and the pipes (9) of the heat exchanger (9) are connected to the cooling system (radiator) of the vehicle engine.

[034] During operation of the device, the centrifugal electric fan (3) removes heat from the surface of the heat exchanger (3) and directly supplies heated air to the vehicle interior through the zone (12) in one or more directions, depending on the wall configuration. The temperature in the passenger compartment is adjusted by changing the operating speed of the electric fan motor (3).

[035] On the basis of the utility model, the applicant manufactures automobile heaters of the A1-605 model range. Tests of the devices showed high efficiency of heating using a radial electric fan, which allows to reduce the noise level during operation by 10-12 dBA compared to analogues.

Claims (8)

1. A heater for a vehicle, containing a housing (1) in which a liquid heat exchanger (2) and a centrifugal electric fan (3) are installed, placed with the possibility of radial output from the housing (1) of the air heated by the heat exchanger (2), characterized in that the housing contains a wall (6) having a zone (12) with holes of a cellular structure for the exit of heated air. 2. The heater according to claim 1, characterized in that the body (1) is made in the form of a rectangular parallelepiped and contains four walls (6), at least one of which has the specified zone (12) with holes of a cellular structure. 3. Heater according to claim 2, characterized in that the housing (1) consists of connected upper (7) and lower (4) parts. 4. The heater according to claim 1, characterized in that the zone (12) with holes of the cellular structure is formed by notches of the wall (6) of the housing (1). 5. The heater according to claim 1, characterized in that the zone (12) with holes of a cellular structure is located opposite the blades of the electric fan (3). 6. The heater according to claim 1, characterized in that the liquid heat exchanger (2) has inlet and outlet pipes (9) for the coolant, screw (10) for air release. 7. The heater according to claim 1, characterized in that the liquid heat exchanger (2) is located in the lower part of the housing (1) and is equipped with an upper panel (11) with a diffuser, on which an electric fan (3) is installed. 8. Heater according to claim 1, characterized in that the electric fan (3) has an electronically controlled brushless electric motor and an external electrical connector (13) for connecting power.

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