CN201416501Y

CN201416501Y - Novel fuel filter having a temperature control valve and heating by using return oil

Info

Publication number: CN201416501Y
Application number: CN2009201725012U
Authority: CN
Inventors: 何顺东; 黄绍明; 邴丽荣
Original assignee: WAL FILTERS HEFEI Ltd
Current assignee: Hefei Weir oil-fired system limited company
Priority date: 2009-06-10
Filing date: 2009-06-10
Publication date: 2010-03-03
Anticipated expiration: 2019-06-10

Abstract

The present utility model relates to a novel fuel filter having a temperature control valve and heating by using return oil. The novel fuel filter comprises a cover board assembly, a sealing ring, a filter element component, a filter tank and a temperature control valve; a cover board of the cover board assembly is welded with an oil inlet pipe, an oil outlet pipe and an oil return pipe; the inletof the oil return pipe is provided with the temperature control valve which comprises a steel ball, a valve seat, a bimetallic strip, a press block and an O-shaped ring; the valve seat is positionedat the mouth of the oil return pipe at the inner side of the cover board, the steel ball is positioned in a step hole of the valve seat, and the end of the bimetallic strip contacts the steel ball. According to the utility model, warm fuel oil returning from a high-pressure pump is used to heat the fuel oil in a filter; when the temperature value of the fuel oil reaches a setting value, an oil inlet of a oil return pipe of the filter can be closed automatically through the control of the temperature control valve to prevent the fuel oil having an over-high temperature, and the returned fuel oil flows back to an oil box for cooling through the oil return pipe.

Description

The novel fuel filter cleaner that has thermostat valve with the oil return of utilizing heating

Technical field

The utility model relates to a kind of fuel filter, exactly is a kind of fuel filter that has thermostat valve that utilizes the oil return heating.

Background technique

Fuel filter provides the diesel oil of cleaning by the impurity in the filter paper filtration diesel oil to engine fuel system.Under low temperature environment, solidifying appears in diesel oil easily, and it is big that viscosity number becomes, and the flowability of diesel oil variation can cause problems such as engine oil deficiency, influences the normal startup and the operation of motor.

At present, the electrically heated method of employing is arranged on the market, come fuel oil is heated.Electric heater is installed between filter cleaner and the filter block usually, and fuel oil enters in the filter cleaner by electric heater through filter block; When temperature was lower than setting value, the temperature transducer that is installed in filler opening sent signal, connects electric heater fuel oil is heated; When temperature was higher than setting value, electric heater cut out heating function.The deficiency of this method: 1, electric heater is installed and is needed filter block, and need mounting temperature sensor, cost is higher; 2, the installation of filter block and heater has increased the size of filter cleaner integral body, and requiring on car load has bigger installing space, has increased the layout difficulty on car load; During 3, owing to the employing electric heating, its required electric current is bigger, occurs heater sometimes by the situation of burning, and causes the filter cleaner disabler; Can produce certain resistance when 4, fuel oil is by filter block and heater, cause the pressure reduction of oil supply system bigger, can reduce the working life of filter cleaner.

Summary of the invention

Adopt electrical heating method fuel oil to be heated the problems such as cost height, volume increase of existence in order to solve existing filter cleaner, the utility model provides a kind of novel fuel filter cleaner that has thermostat valve with the oil return of utilizing heating.

Concrete improvement design proposal is as follows:

The novel fuel filter cleaner that has thermostat valve with the oil return of utilizing heating comprises cover plate assembly 1, seal ring 2, element kit 3, filter tank 4 and thermostat valve 5; Be welded with oil inlet pipe 1a, oil outlet tube 1b and return tube 1c on the cover plate of cover plate assembly 1; The filter paper 3b of element kit 3 is adhered between upper end cap 3a and the lower end cap 3d by glue 3c; Cover plate assembly 1 and filter tank 4 are tightly connected by undercut;

Described return tube 1c filler opening place is provided with thermostat valve 5, and thermostat valve 5 places in the guiding gutter 3e of upper end cap 3a.Thermostat valve 5 comprises steel ball 5a, valve seat 5b, bimetallic strip 5c, briquetting 5d and O type circle 5e; Valve seat 5b is located at the return tube mouth of pipe place of cover plate inboard, valve seat 5b is provided with step hole, steel ball 5a places in the step hole of valve seat 5b, the end of bimetallic strip 5c contacts with steel ball 5a, the other end of bimetallic strip 5c is pressed on the valve seat by briquetting 5d, seals by O type circle 5e between valve seat 5b and the return tube.

The utility model has the following advantages compared with prior art:

1, the utility model directly utilizes the warm fuel oil of high-pressure service pump backflow that low temperature fuel oil in the filter cleaner is heated, and makes full use of and saved the energy;

2, the utility model need not to install filter block, electric heater and temperature transducer, has reduced cost largely, has reduced the filter cleaner overall dimensions simultaneously;

3, the utility model operating pressure differential is low, can prolong the working life and the replacement cycle of filter cleaner;

4, the utility model can be discharged the gas that accumulates in the filter cleaner internal upper part when engine shutdown, thereby guarantees that automobile can normally start, and guarantees the engine start performance.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 is a thermostat valve structure enlarged view,

Fig. 3 is Fig. 1 plan view (removing cover plate assembly).

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

Referring to Fig. 1, the novel fuel filter cleaner that has thermostat valve with the oil return of utilizing heating comprises cover plate assembly 1, seal ring 2, element kit 3, filter tank 4 and thermostat valve 5; Be welded with oil inlet pipe 1a, oil outlet tube 1b and return tube 1c on the cover plate of cover plate assembly 1; The filter paper 3b of element kit 3 is adhered between upper end cap 3a and the lower end cap 3d by glue 3c; Cover plate assembly 1 and filter tank 4 are tightly connected by undercut.

Return tube 1c filler opening place is provided with thermostat valve 5, and thermostat valve 5 places in the guiding gutter 3e of upper end cap 3a, sees Fig. 3.As seen from Figure 2, thermostat valve 5 comprises steel ball 5a, valve seat 5b, bimetallic strip 5c, briquetting 5d and O type circle 5e; Valve seat 5b is located at the return tube mouth of pipe place of cover plate inboard, valve seat 5b is provided with step hole, steel ball 5a places in the step hole of valve seat 5b, the end of bimetallic strip 5c contacts with steel ball 5a, the other end of bimetallic strip 5c is pressed on the valve seat by briquetting 5d, seals by O type circle 5e between valve seat 5b and the return tube.

During work, the warm fuel oil from high-pressure service pump refluxes enters in the filter cleaner by return tube 1c, and the low temperature fuel oil in the filter cleaner is heated; Low temperature fuel oil in the fuel tank enters filter cleaner by oil inlet pipe 1a, by the thermostat valve 5 of flowing through of the guiding gutter 3e on the upper end cap 3a, see Fig. 3, when the fuel oil temperature of oil inlet pipe inflow raises gradually, bimetallic strip 5c causes moving down gradually with steel ball 5a contact jaw because of the generation deformation of being heated in the thermostat valve 5, and steel ball 5a moves down owing to action of gravity thereupon; When the fuel oil temperature of oil inlet pipe inflow surpasses setting value, steel ball 5a contacts fully with valve seat 5b and realizes sealing, thermostat valve 5 cuts out, thereby stops the fuel oil of return tube 1c high temperature to continue to enter in the filter cleaner, has avoided fuel oil temperature too high working life that influences filter cleaner; After thermostat valve 5 cut out, the fuel oil of backflow was back to fuel tank by three oil pipes and cools off.

Claims

1, has the novel fuel filter cleaner that has thermostat valve of the oil return of utilizing heating, comprise cover plate assembly (1), seal ring (2), element kit (3), filter tank (4) and thermostat valve (5); Be welded with oil inlet pipe (1a), oil outlet tube (1b) and return tube (1c) on the cover plate of cover plate assembly (1); The filter paper (3b) of element kit (3) is adhered between upper end cap (3a) and the lower end cap (3d) by glue (3c); Cover plate assembly (1) is tightly connected by undercut with filter tank (4), it is characterized in that:

Described return tube (1c) filler opening place is provided with thermostat valve (5), and thermostat valve (5) places in the guiding gutter (3e) of upper end cap (3a), and thermostat valve (5) comprises steel ball (5a), valve seat (5b), bimetallic strip (5c), briquetting (5d) and O type circle (5e); Valve seat (5b) is located at the return tube mouth of pipe place of cover plate inboard, valve seat (5b) is provided with step hole, steel ball (5a) places in the step hole of valve seat (5b), and the end of bimetallic strip (5c) contacts with steel ball (5a), and the other end of bimetallic strip (5c) is pressed on the valve seat by briquetting (5d).