CN2352709Y

CN2352709Y - Electically preheating means for starting automobile engine in low temp.

Info

Publication number: CN2352709Y
Application number: CN98240295U
Authority: CN
Inventors: 于杲昱
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-08
Filing date: 1998-09-08
Publication date: 1999-12-08
Anticipated expiration: 2008-09-08

Abstract

The utility model relates to an electric preheating device for starting automobile engine in low temperature, and belongs to a motor vehicle electric heater field. The utility model is characterized in that a pump is additionally installed in the heating chamber of an electric heating element to forcibly cool circulating water. The utility model has the advantages that the size is small, the installation is convenient and simple, the utility model preheat fast, the utility model does not change the circulating mode of an engine cooling system and does not reduce the heating amount of warm air, etc.

Description

The electric heating Preheating unit that is used for the motor car engine cold starting

The utility model is the electric heating Preheating unit that is used for the motor car engine cold starting about a kind of, is used for the preheating of motor car engine and other water-cooled engine under low temperature environment, belongs to Motor Vehicle electric heating apparatus field.

At north cold area, when engine temperature was lower than subzero 10 ℃, difficulty will take place in its starting.Even motor can start at low temperatures, the idle running that also needs 10-20 minute reaches normal operating temperature, the fuel consumption of this process and toxic emission are 2-4 times under the normal temperature, studies show that wear extent of engine cold-start is equivalent to drive a vehicle tens kilometers in the time of 5 ℃.The motor electric heating preheater that has occurred several convenience, safety in recent years, some has applied for Chinese patent, as 88215278,93203842,94205459,94229371 etc., their 220 volts of uses are civilian, be provided with two mouths on the cavity of electric heating element and be used for water inlet and outlet being equipped with, series connection or be parallel on the motor warm braw loop realizes motor is heated by convection circulation.By this actual use in several years, some defectives and problem have also appearred in these designs.For example, when this type of preheater and warm braw loop coupled in series, because the warm braw pipeline is longer, and the convection current pressure head has only the 10-20mm water column, so the cooling water cycle rate is very low, seethe with excitement in the preheater on the one hand, and motor is not warm, even to some motor, the too high hot water of temperature that flows through the motor part also can make thermostat open, flow of hot water is to radiator, and many heats are lost in the air by radiator, the time of the heated engine that extended greatly.When preheater and the parallel connection of warm braw loop, though shortened the length of circulation loop, improved the effect of conducting heat, but because the convection current pressure head does not increase, so this improvement is very limited, the actual use shows, when preheater and the parallel connection of warm braw loop, the preheater end also can seethe with excitement on the one hand, and thermostat still can be opened, on the other hand, also can produce new problem: when motor normally moved, originally the motor dewatering outlet of not water flowing had become new cooling water passage with the radiator drain, had destroyed engine interior cooling water circulating path, when causing warm braw not hot, engine water temperature is too high in the time of can causing vehicle driving again, and the cooling water boiling promptly is commonly called as " boiling ", make local parts cooling bad, cause serious wearing and tearing.

The purpose of this utility model is to propose a kind of electric heating Preheating unit that is used for the motor car engine cold starting, its heating chamber has the function of pump concurrently, can be fast, heated engine equably, when normal working of engine, do not change the circulation route of engine cooling water, can eliminate all defectives and the problem of present various electric heating preheaters.

The purpose of this utility model is achieved like this.Accompanying drawing 1 is the structural representation of analysing and observe along motor reel of the present utility model.Among the figure:

1, heating chamber housing 2, intake pipe 3, outlet pipe 4, electric heating element

5, the axle of impeller 6, motor 7, panel 8, motor

9, Sealing

Wherein intake pipe (2) and outlet pipe (3) are contained on the heating chamber housing (1), and electric heating element (4) is contained in the heating chamber.The feature of this programme is, intake pipe (2) gos deep into a segment distance in the heating chamber, an end that gos deep into heating chamber at intake pipe (2) has a panel (7), panel (7) is the plane or the curved surface of an annular, its outward edge is circle or sub-circular, size is close with impeller, and the axle of motor (8) vertical panel (7) is in the center of panel (7).Motor (6) is contained in the opposite side of the heating chamber relative with panel (7), the axle of motor (8) puts in heating chamber, Sealing (9) is housed between motor (6) and heating chamber, impeller (5) is contained on the axle (8) of motor, and impeller (5) is formed a centrifugal pump structure near panel (7) and with panel (7) in heating chamber.Originally the electric heating Preheating unit that is used for the motor car engine cold starting is work like this, this device is connected on the motor warm braw loop, after connecting the 220V ac power supply, electric heating element (4) begins to heat cooling water, while impeller (5) high speed rotating under the driving of motor (6), in heating chamber, form a centrifugal pump structure with panel (7), this centrifugal pump structure sucks heating chamber with engine cooling water from intake pipe (2) continuously, after electric heating element (4) heating, by outlet pipe (3) injection engine, thereby realize the pump circulation of engine cooling water is heated.

The good effect that the utility model can produce comprises, 1, because the effect of pump, and the cooling water speed of circulation is accelerated, and cooling water does not no longer freely seethe with excitement because of circulation in the Preheating unit.Actual measurement shows, is not more than 5 ℃ according to the water-in and water-out temperature difference of the Preheating unit of this programme manufacturing; 2, because intake pipe gos deep into heating chamber, panel (7) can be near the middle part of heating chamber with the centrifugal pump that impeller (5) is formed, and the eddy current in the heating chamber is even like this, and the electric heating element heat radiation is also even; 3, because the cooling water speed of circulation is accelerated, and water-in and water-out have a narrow range of temperature, thereby can not produce high temperature in the part thermostat are opened, cooling water can not flow to radiator, has reduced the thermal loss of warm, has shortened heating time; 4, heat up evenly in each position of motor, reduced because of the uneven wearing and tearing that cause of thermal distortion; 5, because device is connected on the motor warm braw loop, do not change the circulating path of cooling water, it is not hot can not produce in the motor-driven vehicle going warm braw, the problem that the motor local temperature is too high; 6, device volume is very little, resembles an easy trombone slide, is convenient to install

The following describes an example, this example designs for small and medium-sized car according to the utility model.Fig. 2 is the structural representation of analysing and observe along the center line of motor reel.Among the figure, 1, heating chamber housing 2, intake pipe 3, outlet pipe 4, electric heating element 5, impeller 6, motor 7, panel 8, the axle 9 of motor, Sealing 10, terminal box 11, heat protector 12, the dividing plate mechanical sealing base of holding concurrently.The major parameter of example is electric heating tube voltage rating AC220V, rated power 1300W, motor voltage rating AC220V, output power 15W, 1350 rev/mins of rotating speeds.Heating chamber housing (1) is a cylindrical shape, and its external diameter and motor external diameter are 76mm, device length overall 185mm.Heating chamber housing (1) welds together by an argon-arc welding seam jointly with the housing and the dividing plate (12) of motor (6).Heat protector (11) breaks down or the warm braw loop can deenergization when smooth at motor, and break-off signal is 80 ℃.

Claims

1, the electric heating Preheating unit that is used for the motor car engine cold starting, it is by heating chamber housing (1), intake pipe (2), outlet pipe (3), electric heating element (4), impeller (5), motor formations such as (6), it is characterized in that an end that gos deep into heating chamber at intake pipe (2) has a panel (7), panel (7) is formed a centrifugal pump with the impeller (5) on the axle (8) that is contained in motor in heating chamber.

2, the electric heating Preheating unit that is used for the motor car engine cold starting according to claim 1 is characterized in that panel (7) is the plane or the curved surface of an annular, and its outward edge is circle or sub-circular.

3, the electric heating Preheating unit that is used for the motor car engine cold starting according to claim 1, axle (8) vertical panel (7) that it is characterized in that motor is in the center of panel (7).