Carburetor capable of improving starting effect

Abstract

The utility model relates to a carburetor capable of improving starting effect, which comprises a carburetor body, a diaphragm pump is arranged on the outer side portion of the carburetor body, an upper oil port is arranged on the diaphragm pump, an oil inlet hole channel communicated with the upper oil port is arranged on the carburetor body, and the oil inlet hole channel is communicated with an oil cavity in the diaphragm pump. A manual oil recharging pump is arranged on the outer side portion of the carburetor body, an oil inlet of the manual oil recharging pump is communicated with the oil inlet hole channel, and an oil outlet of the manual oil recharging pump is communicated with an oil cavity in the diaphragm pump. The carburetor with the improved starting effect is novel in structure and reasonable in design, on the basis of an original diaphragm pump, the manual oil supplementing pump is connected in parallel, when an engine is started, the oiling speed can be increased by rapidly pressing the manual oil supplementing pump, the starting speed of the engine is greatly increased, and the starting effect is good.

Description

Technical Field

[0001] This utility model relates to the field of carburetors, and in particular to a carburetor that improves starting performance. Background Technology

[0002] Some carburetors utilize diaphragm pumps to improve engine performance. The diaphragm pump draws fuel into the fuel chamber and then into the mixing chamber, operating using the air pressure within the carburetor. However, during cold starts, the diaphragm pump's fuel delivery is slow, especially at low ambient temperatures. Insufficient fuel atomization results in a slow start-up, which is unsuitable for scenarios requiring rapid start-up, such as battlefield drones. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a carburetor that improves the starting effect, greatly speeds up the engine starting speed, and has a good starting effect.

[0004] This utility model is achieved by the following scheme: a carburetor for improving starting performance, comprising a carburetor body, a diaphragm pump provided on the outer side of the carburetor body, a fuel inlet on the diaphragm pump, a fuel inlet channel on the carburetor body communicating with the fuel inlet, the fuel inlet channel communicating with the fuel chamber inside the diaphragm pump, a manual fuel replenishment pump provided on the outer side of the carburetor body, the fuel inlet of the manual fuel replenishment pump communicating with the fuel inlet channel, and the fuel outlet of the manual fuel replenishment pump communicating with the fuel chamber inside the diaphragm pump.

[0005] Furthermore, the carburetor body has a bypass channel communicating with the oil inlet channel on its side. A bypass oil pipe is connected between the bypass channel and the oil inlet of the manual fuel pump. The carburetor body also has a fuel replenishment channel leading to the oil chamber inside the diaphragm pump on its side. A fuel replenishment pipe is connected between the fuel replenishment channel and the oil outlet of the manual fuel replenishment pump.

[0006] Furthermore, the manual oil replenishment pump includes a valve seat and an elastic pressing cover on the valve seat. An oil inlet chamber is formed between the elastic pressing cover and the valve seat. The valve seat is provided with an oil outlet channel and an oil inlet channel. The bottom of the oil inlet chamber is provided with a control valve structure that controls one of the oil outlet channel and the oil inlet channel to communicate with the oil inlet chamber.

[0007] Furthermore, the control valve structure includes a flexible umbrella valve, which includes an umbrella cover and an umbrella handle. The valve seat has a mounting groove in the middle for inserting the umbrella handle and the lower part communicates with the oil outlet channel. The groove opening of the mounting groove has an annular groove around it. The umbrella cover covers the annular groove. The bottom of the annular groove has an oil passage hole communicating with the oil inlet channel.

[0008] Furthermore, the umbrella handle has a groove in the middle that extends through the top surface of the umbrella cover, and the lower end of the umbrella handle has a slit.

[0009] Furthermore, the lower sides of the umbrella handle on both sides of the slit are obliquely recessed towards the middle to make the width of the lower sides of the umbrella handle wider at the top and narrower at the bottom.

[0010] Furthermore, a sealing ring is embedded in the upper part of the mounting groove, a limiting protrusion is provided on the inner side of the upper end of the sealing ring, and an annular limiting groove that cooperates with the limiting protrusion is provided on the outer periphery of the upper end of the umbrella handle.

[0011] Furthermore, the carburetor body is connected to a mounting bracket by screws, the valve seat is connected to the mounting bracket via a connecting seat, the oil inlet of the manual fuel pump is located on the valve seat and communicates with the oil outlet channel; the oil outlet of the manual fuel pump is located on the connecting seat and communicates with the oil inlet channel on the valve seat via an internal channel of the connecting seat, and the connecting seat is provided with a control valve for controlling the opening and closing of the internal channel of the connecting seat.

[0012] Furthermore, the outer periphery of the elastic pressing cover is provided with a flange, and a pressing cover for pressing the flange is connected to the valve seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The carburetor of the present invention, which improves the starting effect, has a novel structure and reasonable design. Based on the original diaphragm pump, a manual fuel pump is connected in parallel. When the engine is started, the fuel supply speed can be increased by quickly pressing the manual fuel pump, which greatly speeds up the engine starting speed and results in a good starting effect.

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0015] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0016] Figure 2 This is a perspective view of another embodiment of the present invention;

[0017] Figure 3 This is a perspective view of the carburetor body according to an embodiment of the present utility model;

[0018] Figure 4 This is a perspective view of the manual oil replenishment pump according to an embodiment of this utility model;

[0019] Figure 5 This is a top view of the manual oil replenishment pump according to an embodiment of this utility model;

[0020] Figure 6 yes Figure 5 Sectional view of AA;

[0021] The following are the labels in the diagram: 100-Carburetor body, 110-Inlet channel, 120-Bypass channel, 130-Maintenance channel, 200-Diaphragm pump, 210-Oil chamber, 220-Inlet port, 300-Manual make-up pump, 310-Valve seat, 311-Outlet channel, 312-Inlet channel, 313-Mounting groove, 314-Annular groove, 315-Oil passage hole, 320-Elastic push-button cover, 330-Inlet chamber, 340-Flexible umbrella valve, 341-Umbrella cover, 342-Umbrella handle, 343-Groove, 344-Slit, 345-Annular limiting groove, 350-Sealing ring, 351-Limiting protrusion ring, 360-Connecting seat, 370-Control valve, 380-Pressure cap, 400-Bypass oil pipe, 500-Maintenance oil pipe. Detailed Implementation

[0022] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] like Figures 1-6 As shown, a carburetor for improving starting performance includes a carburetor body 100. A diaphragm pump 200 is located on the outer side of the carburetor body 100, and the diaphragm pump 200 has a fuel inlet 220. The carburetor body has a fuel inlet channel 110 communicating with the fuel inlet channel and the fuel inlet channel is connected to the fuel chamber inside the diaphragm pump. A manual fuel filler pump 300 is located on the outer side of the carburetor body. The fuel inlet of the manual fuel filler pump 300 is connected to the fuel inlet channel 110, and the fuel outlet of the manual fuel filler pump 300 is connected to the fuel chamber inside the diaphragm pump. This carburetor, based on the original diaphragm pump 200, adds a manual fuel filler pump 300 in parallel. When starting the engine, quickly pressing the manual fuel filler pump 300 can increase the fuel supply speed and greatly accelerate the engine starting speed.

[0025] In this embodiment, the carburetor body 100 has a bypass channel 120 communicating with the fuel inlet channel 110 on its side. A bypass pipe 400 connects the bypass channel 120 to the fuel inlet of the manual fuel replenishment pump 300. The carburetor body 100 also has a fuel replenishment channel 130 leading to the fuel chamber of the diaphragm pump on its side. A fuel replenishment pipe 500 connects the fuel replenishment channel to the fuel outlet of the manual fuel replenishment pump. The bypass channel 120 and the fuel replenishment channel 130 are added to the carburetor body to connect the manual fuel replenishment pump 300, enabling the manual fuel replenishment pump 300 and the diaphragm pump 200 to be connected in parallel.

[0026] In this embodiment, the manual oil replenishment pump 300 includes a valve seat 310 and an elastic pressing cover 320 covering the valve seat. The elastic pressing cover 320 is made of rubber or silicone. An oil inlet chamber 330 is formed between the elastic pressing cover 320 and the valve seat 310. The valve seat is provided with an oil outlet channel 311 and an oil inlet channel 312. The bottom of the oil inlet chamber is provided with a control valve structure that controls the oil outlet channel and the oil inlet channel to communicate with the oil inlet chamber. When the elastic pressing cover 320 is pressed, the oil in the oil inlet chamber 330 is squeezed out. When the elastic pressing cover 320 is released, the oil is sucked in. Through rapid pressing, the oil is pumped into the oil chamber.

[0027] In this embodiment, the control valve structure includes a flexible umbrella valve 340. The flexible umbrella valve 340 includes an umbrella cover 341 and an umbrella handle 342. The valve seat 310 has a mounting groove 313 in the middle for inserting the umbrella handle and whose lower part communicates with the oil outlet channel. The mounting groove 313 has an annular groove 314 around its opening. The umbrella cover covers the annular groove, and the bottom of the annular groove has an oil passage hole 315 communicating with the oil inlet channel. The flexible umbrella valve 340 functions as a one-way valve.

[0028] In this embodiment, the umbrella handle portion 342 has a groove 343 that penetrates the top surface of the umbrella cover, and the lower end of the umbrella handle portion has a slit 344. When the elastic pressing cover 320 is pressed, the slit is forced to open and the oil in the oil inlet chamber 330 is squeezed out. When the elastic pressing cover 320 is released, the slit closes. Due to the negative pressure of the oil inlet chamber 330, the oil passes through the oil passage 315 and pushes the umbrella cover 341 open to enter the oil inlet chamber.

[0029] In this embodiment, the lower sides of the umbrella handle on both sides of the slit are obliquely cut and recessed towards the middle so that the width of the lower sides of the umbrella handle is wider at the top and narrower at the bottom.

[0030] In this embodiment, in order to ensure the stable operation of the flexible umbrella valve 340, a sealing ring 350 is embedded in the upper part of the mounting groove, a limiting protrusion ring 351 is provided on the inner side of the upper end of the sealing ring, and an annular limiting groove 345 that cooperates with the limiting protrusion ring is provided on the outer periphery of the upper end of the umbrella handle 342.

[0031] In this embodiment, the carburetor body is connected to a mounting bracket by screws, and the valve seat is connected to the mounting bracket via a connecting seat 360. The inlet of the manual fuel pump is located on the valve seat and communicates with the outlet channel. The outlet of the manual fuel pump is located on the connecting seat and communicates with the inlet channel on the valve seat via an internal channel of the connecting seat. The connecting seat is provided with a control valve 370 for controlling the opening and closing of the internal channel of the connecting seat. After the engine is started, the control valve can be closed to prevent oil from entering the manual fuel pump.

[0032] In this embodiment, the outer periphery of the elastic pressing cover is provided with a flange, and a pressing cover 380 for pressing the flange is connected to the valve seat.

[0033] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0034] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0035] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0036] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A carburetor for improving starting performance, comprising a carburetor body, a diaphragm pump disposed on the outer side of the carburetor body, the diaphragm pump having a fuel inlet, and a fuel inlet channel communicating with the fuel inlet, the fuel inlet channel communicating with the fuel chamber inside the diaphragm pump, characterized in that: The carburetor body outer side is provided with a manual oil supplement pump, the oil inlet of the manual oil supplement pump is communicated with the oil inlet channel, and the oil outlet of the manual oil supplement pump is communicated with the oil cavity in the diaphragm pump.

2. The carburetor for improving starting performance according to claim 1, characterized by: The carburetor body side is provided with a bypass channel communicated with the oil inlet channel, the bypass channel and the oil inlet of the manual oil supplement pump are connected by a bypass oil pipe, the carburetor body side is provided with an oil supplement channel communicated with the oil cavity in the diaphragm pump, and the oil supplement channel and the oil outlet of the manual oil supplement pump are connected by an oil supplement pipe.

3. The carburetor for improving starting performance according to claim 1, characterized by: The manual oil supplement pump comprises a valve seat and an elastic pressing cover covering the valve seat, an oil inlet chamber is formed between the elastic pressing cover and the valve seat, an oil outlet channel and an oil inlet channel are arranged in the valve seat, and the bottom of the oil inlet chamber is provided with a control valve structure for controlling the oil outlet channel and the oil inlet channel to be selectively communicated with the oil inlet chamber.

4. The carburetor for improving starting performance according to claim 3, characterized by: The control valve structure comprises a flexible umbrella valve, the flexible umbrella valve comprises an umbrella cover and an umbrella handle, a mounting groove is arranged in the middle of the valve seat and used for inserting the umbrella handle and communicated with the oil outlet channel at the lower part, an annular groove is arranged on the outer periphery of the groove mouth of the mounting groove, the umbrella cover covers the annular groove, and an oil passing hole communicated with the oil inlet channel is arranged at the bottom of the annular groove.

5. The carburetor for improving the effect of starting according to claim 4, characterized by: A groove cavity penetrating the top surface of the umbrella cover is arranged in the middle of the umbrella handle, and a slit is arranged at the lower end of the umbrella handle.

6. The carburetor for improving the effect of starting according to claim 5, characterized by: The lower part of the umbrella handle on both sides is obliquely cut and recessed towards the middle, so that the width of the lower part of the umbrella handle on both sides is wide at the top and narrow at the bottom.

7. The carburetor for improving starting performance according to claim 4, characterized by: A sealing ring is embedded in the upper part of the mounting groove, a limiting convex ring is arranged on the inner side of the upper end of the sealing ring, and an annular limiting groove matched with the limiting convex ring is arranged on the outer peripheral part of the upper end of the umbrella handle.

8. The carburetor for improving starting performance according to claim 3, characterized by: The carburetor body is connected with a mounting bracket through a screw, the valve seat is connected with the mounting bracket through a connecting seat, the oil inlet of the manual oil supplement pump is arranged on the valve seat and communicated with the oil outlet channel, the oil outlet of the manual oil supplement pump is arranged on the connecting seat and communicated with the oil inlet channel on the valve seat through the internal channel of the connecting seat, and the connecting seat is provided with a control valve for controlling the opening and closing of the internal channel of the connecting seat.

9. The carburetor for improving starting performance according to claim 3, characterized by: The outer peripheral part of the elastic pressing cover is provided with a flange part, and a pressing cover for pressing the flange part is connected to the valve seat.

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