CN203050914U - Paraffin temperature controller used for carburetor - Google Patents

Abstract

The utility model relates to a temperature control device used for an engine starting gear, in particular to a paraffin temperature controller used for a carburetor. The paraffin temperature controller comprises a red copper seat, paraffin, a main body, a plunger, a push rod and a return spring. A cavity used for containing the paraffin is arranged in the red copper seat, an expanded cavity is arranged at the lower part of the main body, wherein a hollow push rod cavity, which is capable of containing the plunger and the push rod and enabling the push rod to move along the push rod cavity, is arranged in the main body; and one end of the return spring is connected to the tail of the push rod so as to be axially compressed along with motion of the push rod.

Description

The paraffin temp controller that is used for Carburetor

Technical field

The utility model relates to a kind of temperature control apparatus for engine starting gear, the paraffin temp controller of using in particular to Carburetor.

Background technique

Carburetor is exactly that fuel oil with some mixes with air, so that the main device of normal working of engine.In the engine start process, by closing gas-entered passageway, reduce air quantity, the concentration that increases the mixed gas that enters motor makes engine start.But Carburetor on the market is the ubiquity deficiency but.The state of the art that existing Carburetor basis and motor dispatching from the factory before match, adjusting spindle to the fuel delivery of controlling main oil supplying device and idling oil supplying device is regulated, when making Carburetor to engine oil, the ratio of fuel oil and air reaches optimum mixture ratio with the performance of performance motor the best, thereby reaches purpose of energy saving.But, in order to improve probability that motor successfully starts to reduce the engine start number of times, correspondingly need Carburetor under the ratio state of high fuel oil and air, to work.And after starting is finished, when Carburetor is worked under normal state, correspondingly require Carburetor to be in best admixture work with the optimum performance of performance motor, and prolong motor working life, reduce exhaust pollution.But existing Carburetor but can not satisfy above-mentioned requirement.

Application number is the engine starting gear that China's application of 200610008981.X discloses a kind of rotary valve carburetor, this starting arrangement relies on the rotation of starting lever to drive releasable cam interface connector, thereby throttling rod is rotated around spin axis, and with the angle of regulation and axial distance axially part raise and to leave Carburetor, and then provide fuel air mixture controlled, enriching during for engine start.Unfortunately, the starting arrangement of this Carburetor need use the required cam Interface Moving device of throttling rod axial motion, and therefore the structural design of this Carburetor is comparatively complicated, and has increased the axial dimension of Carburetor, has hindered the application of this Carburetor.

Application number is that the application of China of 200520095240.0 discloses a kind of low oil consumption low temperature and easily starts motorcycle carburetor, this Carburetor is on the basis of existing motorcycle carburetor, on the passage of idling air jet, parallel connection adds the idling air compensating jet, on the passage of primary air metering-orifice, parallel connection adds the primary air compensating jet, and at the cylinder of motorcycle the thermostat valve assembly is installed.This Carburetor can improve the low-temperature startup performance of motor to a certain extent, but because parallel connection has been installed idling air compensating jet and primary air compensating jet additional and has been increased the thermostat valve assembly at cylinder on the basis of existing Carburetor, make that internal structure and the external structure of this Carburetor are all complicated many, this has just increased design, manufacturing and the maintenance cost of this Carburetor, thereby has limited the use of this Carburetor.

All there are various deficiencies in the Carburetor that motor of the prior art is used, therefore, the probability that the ratio that urgent need wants a kind of motor can promote fuel oil and air when cold-starting is successfully started with the raising motor, and when high-temperature start-up, can reach the temperature control apparatus that is used for this Carburetor with the Carburetor that less fuel oil is piloted engine equally.

The model utility content

The utility model aims to provide a kind of temperature control apparatus for Carburetor, and this temperature control apparatus is the paraffin temp controller.Adopt the Carburetor of this paraffin temp controller can promote fuel oil and air when engine low-temperature starting-up ratio improving the probability that motor successfully starts, and when high-temperature start-up, can pilot engine with less fuel oil equally.

For achieving the above object, the technological scheme that provides of the utility model is:

A kind of paraffin temp controller for Carburetor, described paraffin temp controller comprises: red copper seat, paraffin, main body, plunger, push rod, return spring; The cross section of described red copper seat is the rectangle with ladder, and its inside has the chamber that holds described paraffin; The bottom of described main body has the chamber of expansion, and it removably is connected with the red copper seat; It is characterized in that having the push rod chamber of hollow in the described main body, holding described plunger and push rod, and push rod is moved along described push rod chamber; One end of described return spring is connected on the afterbody of described push rod, axially to be compressed with the movement of described push rod.

Preferably, ring has liquid medium chamber in the described main body, and it is positioned at the bottom of described main body, and its cross section is the tubaeform of enlarging, is used for holding the liquid medium; Described plunger is positioned at the top of described liquid medium, the below of described push rod.

Preferably, between described paraffin and described liquid medium, also be provided with diaphragm.

Preferably, the described liquid medium mixture that is molybdenum disulfide pulvis and butter.

Preferably, a side of described main body offers vent, so that described push rod when moving, makes that the push rod chamber can be identical with atmosphere in the push rod chamber.

Preferably, described push rod further comprises elongate portion and the jut of falling the arrow-shaped, and the smallest radial diameter in the more described push rod of the radial diameter of described elongate portion chamber is little, can enter in the described push rod chamber with the atmosphere of assurance from described vent.

Preferably, when external temperature was lower than first temperature threshold, the jut of falling the arrow-shaped of described push rod relied on the precompose of described return spring firmly to be resisted against on the shoulder seat of described main body, with the passage in sealing measuring room and described push rod chamber.

Preferably, when external temperature was higher than second temperature threshold, the precompose that the jut of falling the arrow-shaped of described push rod overcomes described return spring firmly left the shoulder seat of described main body, to open the passage in measuring room and described push rod chamber.

Preferably, described first temperature threshold is 20 °, and perhaps described second temperature threshold is 38 °.

Preferably, described Carburetor also comprises linking mechanism.

Preferably, described Carburetor also comprises main body and lower cover.

Preferably, described linking mechanism comprises pump oil ball and Air strangler spindle.

More preferably, when motor was in low-temperature condition, if pilot engine, pump oil ball was extruded, and described linking mechanism is in linkage status, and the flat place of milling on the described Air strangler spindle connects the pulse of motor and the measuring room of Carburetor at this moment; Because this moment, the push rod of paraffin temp controller was in closed condition, vent does not communicate with atmosphere, and impulsive force is directly extruded the fuel oil in the measuring room from main nozzle.

More preferably, when motor was in the condition of high temperature, if pilot engine, pump oil ball was extruded, and described linking mechanism is in linkage status, and the flat place of milling on the described Air strangler spindle connects the pulse of motor and the measuring room of Carburetor at this moment; Because this moment, the push rod of paraffin temp controller was in open mode, vent communicates with atmosphere, and the metering diaphragm can not be extruded more fuel oil from main nozzle.

The utility model also provides a kind of Carburetor, and it comprises any paraffin temp controller that the utility model proposes.

Compared with prior art, because Carburetor of the present utility model adopted the paraffin temp controller, thereby make motor when cold-starting, have the probability that high fuel oil and AIR Proportional successfully start with the raising motor.And when high-temperature start-up, less fuel oil is extruded from main nozzle, thereby a spot of fuel oil is used for high-temperature start-up, so just in time satisfied the start request when engine high-temperature starts.Thus, paraffin temp controller of the present utility model can reduce the fuel consume of motor on the basis of improving motor starting characteristic, and the working life of further improving motor.

Description of drawings

To describe now according to preferred but non-restrictive example of the present utility model, these and other features of the present utility model, aspect and advantage will become apparent when reading following detailed description with reference to the accompanying drawings, wherein:

Fig. 1 is the three-dimensional axonometric drawing according to Carburetor of the present utility model;

Fig. 2 is another the three-dimensional axonometric drawing according to Carburetor of the present utility model;

Fig. 3 is the plan view according to Carburetor of the present utility model, the state that it shows pump oil ball when not pressing;

Fig. 4 is when pump oil ball is not pressed among Fig. 3, the side view of Carburetor when linking mechanism does not connect;

Fig. 5 is the plan view according to Carburetor of the present utility model, the state that it shows pump oil ball when pressing;

Fig. 6 is when pump oil ball is pressed among Fig. 5, the side view of Carburetor when linking mechanism is in linkage status;

Fig. 7 is the viewgraph of cross-section of the Carburetor among Fig. 1;

Fig. 8 is the sectional view of analysing and observe along the C-C line among Fig. 3, and it shows the situation that the flat place of milling of Air strangler spindle communicates with atmosphere;

Fig. 9 is the sectional view of analysing and observe along the C-C line among Fig. 5, and it shows the situation that the flat place of milling of Air strangler spindle communicates with measuring room;

Figure 10 is the rear view according to Carburetor of the present utility model;

Figure 11 is the sectional view of analysing and observe along the B-B line among Fig. 5, and it shows the viewgraph of cross-section of paraffin temp controller of the present utility model.

Figure 12 is the sectional view of analysing and observe along the A-A line among Figure 10, and it shows the situation that the paraffin temp controller is in closed condition;

Figure 13 is the sectional view of analysing and observe along the A-A line among Figure 10, and it shows the situation that the paraffin temp controller is in open mode;

Figure 14 is the oil circuit figure of the needle-valve system on the main body among Fig. 1.

Embodiment

The following description only is exemplary and be not in order to limit the disclosure, application or purposes in essence.Should be understood that in whole accompanying drawings, corresponding reference character is represented identical or corresponding components and feature.

With reference now to accompanying drawing,, Fig. 1 has described the preferred embodiment according to the general structure of the Carburetor 100 with esay starter of the present utility model.As shown in Figure 1, Carburetor 100 has main body 1, loam cake 14, lower cover 19 and extends through the fuel-air hybrid channel 2 of main body 1.Little cylindrical in fuel-big centre, 2 one-tenth two, air hybrid channel is furnished with closure 11, and comprises that aditus laryngis 104 and mixing chamber 101(are in conjunction with reference Figure 11 in it).Main body 1 has columniform horizontal expansion substantially by the chamber (unmarked) of hybrid channel 2, thereby throttle plate pin 12 is installed rotatably usually, make closure 11 opening fully or to change between the closing state fully, thus connection degree or the size of control fuel-air hybrid channel 2.By for example being that the link of screw 17 is installed with temp controller pressing plate 16, paraffin temp controller 200 is fixed on the Carburetor lower cover 19 by temp controller pressing plate 16, is fixed on the main body 1 of Carburetor by screw 170 again in the lower end surface of lower cover 19.Side at carburetor main body 1 is equipped with oil inlet pipe 18, to obtain fuel in the fuel tank of motor.

Further with reference to figure 1, Fig. 2 and Fig. 7, pump oil ball 7 is for having the hemisphere elastic article of cavity, and it is fixedly connected on the spiral cell body 6.Spiral cell body 6 is hollow fitting structure, has the spiral chute 8 that arranges along spiral cell body spiral in the one side.Spiral cell body 6 is socketed on the Air strangler spindle 3 rotationally, with when pump oil ball 7 is pressed, along moving axially of Air strangler spindle 3.Be set with spiral chute bayonet lock 81 on the Air strangler spindle 3, this bayonet lock 81 extends upward by spiral chute 8, so that spiral cell body 6 is positioned on the Air strangler spindle 3 rightly.Air strangler spindle 3 extends through the main body 1 of Carburetor, its in the outside of main body 1 by for example being that riveted way is fixedly connected with closure transmission arm 60, between this closure transmission arm 60 and main body 1, on Air strangler spindle 3, also be connected with Air strangler spindle returning spring 4, this returning spring 4 can be torsion spring, also can be common compression spring, it be used for balance Air strangler spindle 3 equilibrium of forces in the axial direction with pump oil ball return spring 5.About position intermediate at Air strangler spindle 3 is provided with draw-in groove 82, and back-up ring 31 is installed in this draw-in groove 82, and to guarantee to be installed in Air strangler spindle in the main body 1 when pressing pump oil ball, Air strangler spindle 3 can not move along shaft axis 330.。In back-up ring 31 outsides packing ring 32 is installed, so that pump oil ball return spring 5 is connected between packing ring 32 and the spiral cell body 6 movably.The spiral cell body has integrated protruding 83, and locating stud 15 is installed between this projection 83 and the main body 1, with the rotation of restrictive pump oil ball 7, and only allows pump oil ball 7 to move up and down along axis 330.When pressing pump oil ball 7, spiral chute bayonet lock 81 is mobile in spiral chute 8, drive spiral cell body 6 and rotate, and then drive Air strangler spindle 3 rotates.

Fig. 1, Fig. 4, Fig. 6 and Fig. 7 show the linking mechanism of Carburetor.This linking mechanism comprises pump oil ball 7, spiral cell body 6, pump oil ball return spring 5, Air strangler spindle 3, Air strangler spindle returning spring 4, closure transmission arm 60, chock plate transmission arm 50, throttle plate pin 12, return spring of throttle 10 and throttle line support 13.Throttle line support 13 is installed in rotation on the main body 1, and it is connected by riveted fixing with throttle plate pin 14.Closure transmission arm 60 has circular portion 64 and anastomosis part 65, and circular portion 64 has the hole, to be riveted on the Air strangler spindle 3 by the riveted joint form.Anastomosis part 65 has circular groove 51 and bump bonding 66, circular groove 51 cambers, accommodate the joining pin 62 that is fixedly mounted on the main body 1 in it, with when pump oil ball 7 is pressed, the moving circular groove 51 of the rotating band of Air strangler spindle 3 slides along joining pin 62, thereby the top of bump bonding 66 is contacted with the chock plate link arm.As shown in Figure 6, chock plate transmission arm 50 is rotatably connected on the main body 1 by screw, and its clockwise direction shown in can mark 68 rotates, and closure transmission arm 60 rotates with the counter clockwise direction of 61 marks.

Further with reference to figure 3 to Fig. 9, before engine start, need with hand extrusion pump oil ball 7, position shown in Figure 3 is the state of pump oil ball 7 when not pressing.At this moment, Air strangler spindle 3 is in full-gear, and as shown in Figure 3, closure 11 is in full-shut position, and linking mechanism is not in linkage status, as shown in Figure 4.In one exemplary embodiment of the present utility model, specifically referring to Fig. 8, because Air strangler spindle is in fully open position, the Air strangler spindle on the Air strangler spindle 3 mills flat place 341 and communicates with the hole 36 that leads to atmosphere, and Air strangler spindle cylndrical surface 34 will be blocked with the aperture that engine impulse aperture 38 communicates.At this moment, the measuring room 33 that is positioned at main body 1 bottom communicates with atmosphere, and does not communicate with impulse chamber 35 on the Carburetor.At this moment, pressure and atmospheric equilibrium in the measuring room 33 can not receive the pressure pulse from engine crankcase.As shown in Figure 8, between impulse chamber 35 and pulse aperture 38, one-way valve 31 is installed.Be provided with this one-way valve 31 in main body 1, purpose is to allow one of motor generation blow the pulse of only blowing in the suction pulse can enter measuring room 33, and the pulse of inhaling can not enter measuring room 33 by one-way valve 31.A pulse metering-orifice 30 also is housed on one-way valve, and it can regulate the size of self as required, enters the size of the impulsive force in the measuring room 33 so as to adjustment.

When the user used hand extrusion pump oil ball 7, as shown in Figure 5, pump oil ball 7 was under the effect of locating stud 15, and pump oil ball 7 can not rotate around axis 330, can only move axially along axis 330.Because spiral chute bayonet lock 81 fixedly connected on the Air strangler spindle 3 only can move in the spiral chute 8 on spiral cell body 6, this moves and drives spiral chute 8 rotations, and then promotion Air strangler spindle 3 rotates.In a preferred embodiment, when pump oil ball 7 was pressed, Air strangler spindle 3 rotated 75 °.Because the rotation of Air strangler spindle 3, it drives the closure transmission arm 60 that is riveted on the Air strangler spindle 3 and rotates along counter clockwise direction shown in Figure 6 61.At this moment, the circular groove 51 of the anastomosis part 65 of closure transmission arm 60 moves along the joining pin 62 that is fixedly connected on the main body 1, thereby the counter clockwise direction that realizes closure transmission arm 60 is rotated.In this case, anastomosis part 65 promotes chock plate transmission arm 50 and rotates along clockwise direction shown in Figure 6 68, and this moment, linking mechanism was in linkage status.

When the user unclamps pump oil ball 7, pump oil ball 7 self-return again under the effect of pump oil ball return spring 5.Be at linking mechanism under the situation of interlock, Air strangler spindle 3 has rotated 75 degree, and the inclined to one side place 341 of milling on the Air strangler spindle 3 communicates with pulse aperture 38 at this moment, and communicates with measuring room 33, and the cylndrical surface 34 on the Air strangler spindle 3 will be blocked towards the hole 36 of atmosphere, as shown in Figure 9.At this moment, from the pressure pulse 37 in the engine crankcase through impulse chamber 35, pulse metering-orifice 30, one-way valve 31, pulse aperture 38, enter in the measuring room 33, metering diaphragm 2110(in these pressure pulse 37 promotion measuring rooms 33 is referring to Figure 12), by this metering diaphragm 2110 fuel oil in the measuring room 33 is extruded, from main nozzle 20 (referring to Figure 11) ejection of Carburetor, started the purpose that adds rich mixture, thereby be beneficial to the starting of motor.

With reference now to Figure 10 to Figure 13,, describes paraffin temp controller 200 of the present utility model in detail.As shown in figure 11, paraffin temp controller 200 of the present utility model comprises red copper seat 204, paraffin 205, diaphragm 206, main body 203, liquid medium 207, plunger 201, push rod 202, vent 208, return spring 209.The cross section of red copper seat 204 is the rectangles with ladder, and its inside has the chamber that holds paraffin 205.The bottom of main body 203 has the chamber of expansion, and it is by for example being to be threaded or riveted way is connected with red copper seat 204, so that red copper seat 204 is fixed on the main body 203.The push rod chamber 211 and the liquid medium chamber 210 that have hollow in the main body 203.Liquid medium chamber 210 is positioned at the bottom of main body 203, and its cross section is the tubaeform of enlarging, is used for holding liquid medium 207.The liquid medium 207 that the utility model adopts are the flow-like material that a kind of density is big, be difficult for drying, and in an exemplary embodiment, liquid medium of the present utility model are the mixture of molybdenum disulfide pulvis and butter.Between liquid medium 207 and paraffin 205, have diaphragm 206, above liquid medium 207, install by can be along the push rod chamber 211 plungers 201 that slide.Push rod 202 is installed in the push rod chamber 211 in the main body 203 movably.Push rod 202 comprises elongate portion 213, the jut of falling the arrow-shaped 212 and afterbody 214, and the radial diameter of elongate portion 213 is little than the smallest radial diameter in push rod chamber 211, can enter in the push rod chamber 211 from the atmosphere of vent 208 guaranteeing.When external temperature was lower than 20 °, the jut of falling the arrow-shaped 212 of push rod 202 relied on the precompose of return spring 209 firmly to be resisted against on the shoulder seat 215 of main body 203, with the passage of sealing measuring room 33 with push rod chamber 211.One end of return spring 209 is connected on the afterbody 214 of push rod 202, and the other end is fixed in the lower cover 19, axially to be compressed with the movement of push rod 202.

Further describe the working procedure of paraffin temp controller 200 of the present utility model now in conjunction with Figure 10-13.Paraffin temp controller 200 with the paraffin 205 that held in its red copper seat as temperature-sensing element, it utilizes the characteristic of expanding with heat and contract with cold of paraffin 205 to promote push rod 202 and moves, thereby the jut of falling the arrow-shaped 212 that makes push rod 202 is opened or the connecting passage of closed vent hole 208 and measuring room 33, thus the oil spout of control motor main nozzle 20 in the measuring room when starting.According to paraffin controller 200 of the present utility model, it can be configured to when temperature is lower than first temperature threshold, the push rod 202 of paraffin temp controller 200 is in closed condition, and when temperature is higher than second temperature threshold, the push rod 202 of paraffin temp controller 200 is in open mode, and is concrete as Figure 12 and shown in Figure 13.In an exemplary embodiment, first temperature threshold of the present utility model is set at for example 20 °, and second temperature threshold is set at for example 38 °, different application occasion according to motor, first temperature threshold of the present utility model or second temperature threshold can change, for example first temperature threshold can be set at the arbitrary temp value between 18 ° to 25 °, and second temperature threshold can be set at the arbitrary temp value between 35 ° to 42 °.

Be in low-temperature condition at motor, when for example ambient temperature is lower than 20 ° first temperature threshold, if pilot engine, need with hand extrusion pump oil ball 7, promote Air strangler spindle 3 rotations by the spiral chute 8 on the spiral cell body 6, the closure transmission arm on the Air strangler spindle 3 60 promotes chock plate transmission arm 50 then, makes linking mechanism be in linkage status, the flat place 341 of milling on the Air strangler spindle 3 connects the pulse 37 of motor with the measuring room 33 of Carburetor at this moment, sees Fig. 9.After pulse 37 entered in the measuring room 33, pulsation promoted the metering diaphragm 2110 in the measuring room 33.Because the push rod 202 of paraffin temp controller 200 is in closed condition at this moment, vent 208 does not communicate with atmosphere, impulsive force is directly extruded the fuel oil 103 in the measuring room 33 from main nozzle 20, because the fuel oil that extrude from main nozzle 20 this moment forms dense air and fuel mixture in mixing chamber 101, thereby is convenient to the starting of motor.

When motor at high temperature starts, when for example ambient temperature is higher than 38 ° second temperature threshold, if pilot engine, at first use hand extrusion pump oil ball 7, similarly under the promotion of spiral chute 8, Air strangler spindle 3 rotations, the closure transmission arm 60 that drives then on the Air strangler spindle 3 is rotated counterclockwise, thereby promoting closure transmission arm 50 turns clockwise, make linking mechanism be in linkage status, as shown in Figure 6, the flat place 341 of milling of Air strangler spindle 3 connects the pulse 37 of motor with measuring room 33 at this moment.Because paraffin temp controller 200 is under the effect of paraffin 205, promote push rod 202, push rod 202 overcomes the tension force of return spring 209, the jut of falling the arrow-shaped of push rod 212 leaves the shoulder seat 215 on the main body 203, push rod 202 is in open mode, makes push rod chamber 211 communicate with atmosphere by vent 208.At this moment, even the pulse 37 that enters in the measuring room 33 can promote to measure diaphragm 2110, but because vent 208 communicates with atmosphere, the power that acts on the metering diaphragm 2110 can be little a lot, therefore measuring diaphragm 2110 can not extrude more fuel oil from main nozzle 20, can only extrude a spot of fuel oil, see Figure 13.At this moment, the fuel oil that sprays during by aditus laryngis 104 is less, and formed mixture strength is still not high in mixing chamber 101, and this has just realized the less fuel demand of piloting engine under the high temperature, thereby satisfies the starting demand under the engine high-temperature.

At last with reference to Figure 14, Figure 14 is the oil circuit figure of the needle-valve system on the main body among Fig. 1.This needle-valve system comprises pintle valve seat 40, needle-valve 41, needle-valve Rocker arm 42, metering spring (not shown), metering diaphragm 2110, sealing paper washer 43.Carburetor by extrusion pump oil ball 7, produces vacuum (suction) at prestart in pump oil ball 7, then with fuel oil sucking-off from oil can, enter in the oil inlet pipe 18 of Carburetor again.Fuel oil enters in the oil inlet pipe 18, enters loam cake 14, by in the laggard oil circuit of going into main body 1, enters in the needle-valve system of Carburetor shown in Figure 14 from the oil-feed oil circuit of loam cake 14 again.When fuel oil enters the needle-valve system, enter measuring room 33 by pintle valve seat 40, needle-valve 41, fuel oil parts in the measuring room 33 enter in the pump oil ball 7 again, and unnecessary fuel oil is got back to oil can from the outlet of pump oil ball 7, when the fuel oil of a part is stayed in the measuring room 33 as engine operation with oil.Because the effect of metering spring is arranged, the fuel oil in the measuring room 33 of Carburetor reaches a certain amount of back under the effect of metering spring, and needle-valve 41 is closed, and unnecessary fuel oil can not enter in the measuring room 33.Otherwise, the launched machine of fuel oil in measuring room 33 is from main nozzle 20 sucking-offs (seeing Figure 11), after arriving to a certain degree less, under the effect of motor vacuum, metering diaphragm 2110 promotes needle-valve Rocker arm 42, drives needle-valve 41 by needle-valve Rocker arm 42 again, and needle-valve 41 is opened, new fuel oil enters measuring room, satisfies the need of work of motor.

Although at length disclose the utility model with reference to the accompanying drawings, should be understood that these descriptions only are exemplary, are not to limit application of the present utility model.Protection domain of the present utility model is limited by accessory claim, and can be included in various modification, remodeling and the equivalents of doing at the utility model under the situation that does not break away from the utility model protection domain and spirit.

Claims (15)

1. paraffin temp controller that is used for Carburetor, described paraffin temp controller comprises: red copper seat, paraffin, main body, plunger, push rod, return spring; The cross section of described red copper seat is the rectangle with ladder, and its inside has the chamber that holds described paraffin; It is characterized in that the bottom of described main body has the chamber of expansion, be connected with the riveted joint of red copper seat; The push rod chamber that has hollow in the described main body holding described plunger and push rod, and makes push rod move along described push rod chamber; One end of described return spring is connected on the afterbody of described push rod, axially to be compressed with the movement of described push rod.

2. paraffin temp controller according to claim 1 is characterized in that, ring has liquid medium chamber in the described main body, and it is positioned at the bottom of described main body, and its cross section is the tubaeform of enlarging, is used for holding the liquid medium; Described plunger is positioned at the top of described liquid medium, the below of described push rod.

3. paraffin temp controller according to claim 2 is characterized in that, also is provided with diaphragm between described paraffin and described liquid medium.

4. according to each described paraffin temp controller among the claim 1-3, it is characterized in that a side of described main body offers vent, so that described push rod when moving, makes the push rod chamber to communicate with atmosphere in the push rod chamber.

5. paraffin temp controller according to claim 4, it is characterized in that, described push rod further comprises elongate portion and the jut of falling the arrow-shaped, and the radial diameter of described elongate portion is littler than the smallest radial diameter in described push rod chamber, can enter in the described push rod chamber with the atmosphere of assurance from described vent.

6. paraffin temp controller according to claim 5, it is characterized in that, when external temperature is lower than first temperature threshold, the jut of falling the arrow-shaped of described push rod relies on the precompose of described return spring firmly to be resisted against on the shoulder seat of described main body, with the passage in sealing measuring room and described push rod chamber.

7. paraffin temp controller according to claim 5, it is characterized in that, when external temperature was higher than second temperature threshold, the precompose that the jut of falling the arrow-shaped of described push rod overcomes described return spring firmly left the shoulder seat of described main body, to open the passage in measuring room and described push rod chamber.

8. paraffin temp controller according to claim 6 is characterized in that, described first temperature threshold is 20 °.

9. paraffin temp controller according to claim 7 is characterized in that, described second temperature threshold is 38 °.

10. paraffin temp controller according to claim 1 is characterized in that, described Carburetor also comprises linking mechanism.

11. according to claim 1 or 10 described paraffin temp controllers, it is characterized in that described Carburetor also comprises main body and lower cover.

12. paraffin temp controller according to claim 10 is characterized in that, described linking mechanism comprises pump oil ball and Air strangler spindle.

13. paraffin temp controller according to claim 12, it is characterized in that, when motor is in low-temperature condition, if pilot engine, pump oil ball is extruded, described linking mechanism is in linkage status, and the flat place of milling on the described Air strangler spindle connects the pulse of motor and the measuring room of Carburetor at this moment; Because this moment, the push rod of paraffin temp controller was in closed condition, vent does not communicate with atmosphere, and impulsive force is directly extruded the fuel oil in the measuring room from main nozzle.

14. paraffin temp controller according to claim 12, it is characterized in that, when motor is in the condition of high temperature, if pilot engine, pump oil ball is extruded, described linking mechanism is in linkage status, and the flat place of milling on the described Air strangler spindle connects the pulse of motor and the measuring room of Carburetor at this moment; Because this moment, the push rod of paraffin temp controller was in open mode, vent communicates with atmosphere, and the metering diaphragm can not be extruded more fuel oil from main nozzle.

15. a Carburetor, it comprises as each described paraffin temp controller among the claim 1-14.

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