CN210460895U

CN210460895U - Double-cavity carburetor with stable idling

Info

Publication number: CN210460895U
Application number: CN201921456926.6U
Authority: CN
Inventors: 陈其安
Original assignee: ZHEJIANG RUIXING CARBURETOR MANUFACTURING Co Ltd
Current assignee: ZHEJIANG RUIXING CARBURETOR Manufacturing CO Ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-05-05
Anticipated expiration: 2029-09-03

Abstract

The utility model relates to a double-cavity carburetor with stable idling, which comprises a carburetor body, wherein a first cavity and a second cavity which are not communicated with each other are arranged in the carburetor body, a first main air inlet bent pipe and a second main air inlet bent pipe which are symmetrically arranged are arranged right above a throat opening on the carburetor body, the first main air inlet bent pipe is communicated with the first cavity, the second main air inlet bent pipe is communicated with the second cavity, the other side of the carburetor body is provided with a choke shaft, the choke shaft is provided with a first choke valve in a first chamber, a second choke valve is arranged in the second chamber, idle speed flow holes are arranged on the first choke valve and the second choke valve, the carburetor main body is provided with idle speed auxiliary air outlet structures at the position, close to the first choke valve, of the same side of the first cavity provided with the first mounting hole and at the position, close to the second choke valve, of the same side of the second cavity provided with the second mounting hole.

Description

Double-cavity carburetor with stable idling

Technical Field

The utility model relates to a two-chamber carburetor field, concretely relates to stable two-chamber carburetor of idle speed.

Background

The carburetor is a mechanical device which mixes gasoline/liquefied gas with air in a certain proportion under the action of vacuum generated by the operation of an engine. The carburetor is a precise mechanical device, the important action of the carburetor on an engine can be called as the heart of the engine, the invention is an oil-gas dual-purpose carburetor, when the carburetor is in a high-speed working state, liquefied gas enters a mixing cavity of a carburetor body from two oppositely arranged air inlet pipes, air enters the mixing cavity through a choke valve, the liquefied gas and the air are mixed in the mixing cavity to form mixed gas entering the engine from a throttle valve, when the carburetor is in an idling working state, the air enters the mixing cavity from a through hole arranged on the choke valve, the minimum opening degree of the throttle valve is adjusted through an idling control device, the mixed gas which is supplied to the engine to maintain the minimum working value of the engine during idling is realized, the engine is kept working, idling is prevented from being extinguished, but when the carburetor is used for a period of time, the idling hole is easy to be blocked, and the idling device is easy to work bad, the problems of unstable idling, idling stop or over-high idling and the like are caused.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies of the prior art,

a dual chamber carburetor with stable idle speed is provided.

In order to achieve the above purpose, the utility model provides a following technical scheme: a double-cavity carburetor with stable idling comprises a carburetor body, wherein a first cavity and a second cavity which are not communicated with each other are arranged in the carburetor body, a gasoline inlet elbow is arranged on the carburetor body, an electromagnetic valve for controlling the on-off of gasoline is arranged on the carburetor body, a first main air inlet elbow and a second main air inlet elbow which are symmetrically arranged are arranged right above a throat opening on the carburetor body, the first main air inlet elbow is communicated with the first cavity, the second main air inlet elbow is communicated with the second cavity, a first main mounting hole and a second main mounting hole are respectively arranged right above the throat opening of the carburetor body and correspond to the first main air inlet elbow and the second main air inlet elbow, an adjusting bolt is arranged on the side surface of the carburetor body, a throttle shaft is arranged at one side position, close to the adjusting bolt, of the side surface of the carburetor body, and a first throttle valve and a second throttle valve are arranged on the throttle shaft, the first throttle valve is located the one end of first cavity, and the second throttle valve is located the one end that second cavity and first throttle valve correspond the position, carburetor body opposite side is provided with the choke shaft, and the choke shaft is provided with first choke valve in first cavity, is provided with the second choke valve in the second cavity, all is provided with idle flow hole on first choke valve and the second choke valve, and the opposite side that the carburetor main part set up the solenoid valve relatively sets up all to be provided with idle speed adjusting screw in the one end department of first throttle valve and second throttle valve outside, its characterized in that: the carburetor main body is provided with idle speed auxiliary air outlet structures at the position, close to the first choke valve, of the same side of the first cavity provided with the first mounting hole and at the position, close to the second choke valve, of the same side of the second cavity provided with the second mounting hole.

By adopting the technical scheme, when fuel is used, the first air inlet elbow and the second air inlet elbow are closed and cut off, the carburetor realizes fuel oil supply, when fuel is used, the solenoid valve of the carburetor is powered off to stop the fuel oil supply, the first air inlet elbow and the second air inlet elbow supply air, when the carburetor is in a high-speed working state, the choke valve shaft is linked with the first choke valve and the second choke valve to be opened, the first choke valve is parallel to the first cavity, the second choke valve is parallel to the second cavity, the throttle valve shaft is linked with the first throttle valve and the second throttle valve to be opened, so that the first throttle valve is parallel to the first cavity, the second choke valve is parallel to the second cavity, at the moment, the first choke valve, the second choke valve, the first throttle valve and the second throttle valve are all opened to the maximum position, the air flow rate is also maximized, and air enters the first cavity and the second choke valve from the first choke valve to enter the second cavity, the gas enters the first cavity and the second cavity from the first air inlet elbow pipe and the second air inlet elbow pipe respectively, the air is mixed with the gas at the first mounting hole and the second mounting hole when flowing to the first mounting hole and the second mounting hole from the first cavity and the second cavity to form mixed gas, the mixed gas flows to the engine from the first throttle valve and the second throttle valve, when the carburetor works in an idling state, the first choke valve and the second choke valve are both closed, the air enters the first cavity and the second cavity from the idling flow hole, the gas flows into the first cavity and the second cavity from the first mounting hole and the second mounting hole respectively, when the carburetor works in the idling state, the opening angles of the first throttle valve and the second throttle valve are controlled through the idling adjusting screw, the smaller the opening angle is, the smaller the flow is, otherwise, the larger the flow is, and the problems of unstable idling and flameout after the carburetor is used for a period of time are easily caused because the flow of the mixed gas flowing out from the first throttle valve and, therefore the utility model discloses a first cavity and the second cavity at the carburetion body set up the homonymy of first mounting hole and second mounting hole, set up the supplementary structure of giving vent to anger of idle speed in first choke valve and second choke valve department, guarantee even be in under the idle state still through the supplementary structure of giving vent to anger of idle speed have sufficient gas mixture to flow to the engine when guaranteeing the idle speed, engine when giving the idle speed supplies with sufficient gas mixture, guarantee that the engine idle speed is stable.

An idle stable dual chamber carburetor of the above kind may be further configured such that: the idling auxiliary air outlet structure comprises an auxiliary cavity with an opening at one end, a diaphragm is arranged at the opening end of the auxiliary cavity, a plurality of mixed gas inlet small holes communicated with the auxiliary cavity are formed in the other end of the auxiliary cavity, mixed gas outlet small holes are formed in the position, close to the auxiliary cavity, of the carburetor body, a throttle limiting screw connecting hole is formed in the carburetor body, the throttle limiting screw is connected to the throttle limiting screw connecting hole in a threaded mode, a mixed gas outlet connecting channel communicated with the throttle limiting screw connecting hole is formed in one end, facing the throttle limiting screw connecting hole, of the auxiliary cavity, and the mixed gas outlet connecting channel is communicated with the mixed gas outlet small holes.

By adopting the technical scheme, when the carburetor is in an idle working state, because the first throttle valve and the second throttle valve still open a small angle under the action of the idle adjusting screw to enable the mixed gas to flow into the engine, the idle engine is ensured not to be flamed out, but the idle instability and the idle flameout are possibly caused after the carburetor is used for a period of time, the utility model adopts the technical scheme that the carburetor body is provided with the auxiliary cavity, the auxiliary cavity is provided with the mixed gas inlet small hole communicated with the first cavity or the second cavity, and the part of the carburetor body close to the auxiliary cavity is provided with the mixed gas outlet small hole, the auxiliary cavity is also provided with the mixed gas outlet channel communicated with the connecting hole of the throttle valve limiting screw, the throttle valve limiting screw comprises an adjusting part, a connecting part and a limiting part, the outer diameter of the limiting part is smaller than that of the connecting part, and the connecting part is, when the length of the limiting end on the limiting screw of the throttle valve penetrating into the first cavity and the second cavity reaches the maximum length, the opening degree of the first throttle valve and the second throttle valve reaches the maximum opening degree in the idling state, at the moment, the air mixture air outlet connecting channel is blocked by the limiting screw of the throttle valve, the auxiliary cavity is not communicated, the air mixture normally enters the engine from the throttle valve, when the length of the adjusting end extending into the first cavity and the second cavity is smaller and smaller, the idling opening degree of the throttle valve is smaller and smaller, and the area of the air mixture air outlet connecting channel blocked by the limiting end is smaller and smaller, at the moment, the auxiliary cavity is communicated, the air mixture enters the auxiliary cavity from the air mixture inlet small hole of the auxiliary cavity and enters the air mixture air outlet small hole through the limiting screw connecting hole of the throttle valve arranged on the carburetor body to flow out and lead to the engine, the working principle of the utility model is that the air mixture is introduced into, otherwise, the smaller the engine idling speed is, so that the stable idling speed of the engine is ensured, and idling stop is prevented.

An idle stable dual chamber carburetor of the above kind may be further configured such that: the number of the mixed gas inlet small holes is four.

The utility model has the advantages that: the double-cavity carburetor is provided with an auxiliary cavity, provides stable idling and prevents an engine from idling and stalling.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic perspective view 1 of an embodiment of the present invention.

Fig. 2 is a schematic perspective view 2 of an embodiment of the present invention.

Fig. 3 is a top view of an embodiment of the present invention.

Fig. 4 is a schematic sectional view taken along the line a-a in fig. 3.

Detailed Description

Referring to fig. 1-4: a double-cavity carburetor with stable idling comprises a carburetor body 1, a first cavity 101 and a second cavity 102 which are not communicated with each other are arranged in the carburetor body 1, a gasoline inlet elbow 2 is arranged on the carburetor body 1, an electromagnetic valve 3 for controlling the on-off of gasoline is arranged on the carburetor body 1, a first main air inlet elbow 4 and a second main air inlet elbow 5 which are symmetrically arranged are arranged right above a throat opening on the carburetor body 1, the first main air inlet elbow 4 is communicated with the first cavity 101, the second main air inlet elbow 5 is communicated with the second cavity 102, a first main mounting hole 103 and a second main mounting hole 104 are respectively arranged right above the throat opening of the carburetor body 1 and are respectively corresponding to the first main air inlet elbow 4 and the second main air inlet elbow 5, an adjusting bolt 6 is arranged on the side surface of the carburetor body 1, and a throttle shaft 7 is arranged at a position of one side surface of the carburetor body 1 close to the adjusting bolt 6, the throttle shaft 7 is provided with a first throttle valve 71 and a second throttle valve 72, the first throttle valve 71 is positioned at one end of a first chamber 101, the second throttle valve 72 is positioned at one end of a second chamber 102 corresponding to the first throttle valve 71, the other side of the carburetor body 1 is provided with a choke shaft 8, the choke shaft 8 is provided with a first choke valve 81 in the first chamber 101, the second chamber 102 is provided with a second choke valve 82, the first choke valve 81 and the second choke valve 82 are both provided with idle flow holes 801, the other side of the carburetor body 1 opposite to the solenoid valve 3 is provided with a throttle limiting screw 9 at one end of the first throttle valve 71 and the second choke valve 72 facing outwards, the carburetor body 1 is provided with an idle auxiliary air outlet structure at the same side of the first chamber 101 where the first mounting hole 103 is provided and at the same side of the second chamber 102 where the second mounting hole 104 is provided and close to the second choke valve 82, the idle speed auxiliary air outlet structure comprises an auxiliary cavity 105 with an opening at one end, which is arranged in a carburetor body 1, a diaphragm 10 is arranged at one end of the opening of the auxiliary cavity 105, four mixed air inlet small holes 106 which are communicated with the auxiliary cavity 105 are arranged at the other end of the auxiliary cavity 105, a mixed air outlet small hole 109 is arranged at the position, which is close to the auxiliary cavity 105, of the carburetor body 1, a throttle valve limit screw connecting hole 107 is arranged on the carburetor body 1, a throttle valve limit screw thread 8 is connected to the throttle valve limit screw connecting hole 107, a mixed air outlet connecting channel 108 communicated with the throttle valve limit screw connecting hole 107 is arranged at one end, which faces the throttle valve limit screw connecting hole 107, of the auxiliary cavity 105, and the mixed air outlet.

Claims

1. A double-cavity carburetor with stable idling comprises a carburetor body, wherein a first cavity and a second cavity which are not communicated with each other are arranged in the carburetor body, a gasoline inlet elbow is arranged on the carburetor body, an electromagnetic valve for controlling the on-off of gasoline is arranged on the carburetor body, a first main air inlet elbow and a second main air inlet elbow which are symmetrically arranged are arranged right above a throat opening on the carburetor body, the first main air inlet elbow is communicated with the first cavity, the second main air inlet elbow is communicated with the second cavity, a first main mounting hole and a second main mounting hole are respectively arranged right above the throat opening of the carburetor body and correspond to the first main air inlet elbow and the second main air inlet elbow, an adjusting bolt is arranged on the side surface of the carburetor body, a throttle shaft is arranged at one side position, close to the adjusting bolt, of the side surface of the carburetor body, and a first throttle valve and a second throttle valve are arranged on the throttle shaft, the first throttle valve is located the one end of first cavity, and the second throttle valve is located the one end that second cavity and first throttle valve correspond the position, carburetor body opposite side is provided with the choke shaft, and the choke shaft is provided with first choke valve in first cavity, is provided with the second choke valve in the second cavity, all is provided with idle flow hole on first choke valve and the second choke valve, and the opposite side that the carburetor main part set up the solenoid valve relatively all is provided with throttle valve stop screw in first throttle valve and second throttle valve outside one end department, its characterized in that: the carburetor main body is provided with idle speed auxiliary air outlet structures at the position, close to the first choke valve, of the same side of the first cavity provided with the first mounting hole and at the position, close to the second choke valve, of the same side of the second cavity provided with the second mounting hole.

2. The idle-stable dual chamber carburetor of claim 1 wherein: the idling auxiliary air outlet structure comprises an auxiliary cavity with an opening at one end, a diaphragm is arranged at the opening end of the auxiliary cavity, a plurality of mixed gas inlet small holes communicated with the auxiliary cavity are formed in the other end of the auxiliary cavity, mixed gas outlet small holes are formed in the position, close to the auxiliary cavity, of the carburetor body, a throttle limiting screw connecting hole is formed in the carburetor body, the throttle limiting screw is connected to the throttle limiting screw connecting hole in a threaded mode, a mixed gas outlet connecting channel communicated with the throttle limiting screw connecting hole is formed in one end, facing the throttle limiting screw connecting hole, of the auxiliary cavity, and the mixed gas outlet connecting channel is communicated with the mixed gas outlet small holes.

3. An idle-stable dual chamber carburetor according to claim 2, wherein: the number of the mixed gas inlet small holes is four.