Double-gas-supply gas supply device

Abstract

The utility model discloses a double-air-supply fuel gas supply device which comprises a body and two cavities arranged in the body, and each cavity comprises a throat, a main channel, an idling channel and a throttle valve piece. The upstream of the throat communicates with the main spray pipe of the main channel, and the downstream of the throat is provided with a throttle plate; a gas inlet pipe is arranged at the bottom of the body, the gas inlet end of the gas inlet pipe communicates with an LPG or NG pipeline, and the gas outlet end of the gas inlet pipe communicates with the gas inlet ends of the main channel and the idling channel. A plurality of lower air supplementing holes are formed in the lower portion of the throttle valve piece and communicated with a first bypass channel of the main channel and the air outlet end of the throttle valve piece. A plurality of upper air supplementing holes are formed in the upper portion of the throttle valve piece and communicated with a second bypass channel of the idling channel and the air outlet end of the throttle valve piece. According to the utility model, the upper and lower bidirectional air supplementing holes are arranged above and below the throttle valve sheet, so that the output quantity of fuel gas can be more conveniently controlled, and the operation of an engine is more stable.

Description

Technical Field

[0001] The utility model relates to a gas supply device, in particular to a double-air-supplemented gas supply device. Background Art

[0002] In a gas supply device with a double-chamber channel, throttle plates are provided. The two throttle plates are connected to the same throttle shaft. However, due to manufacturing errors, when the throttle shaft drives the two throttle plates to open and close synchronously, the opening degrees of the two throttle plates may be inconsistent, resulting in different intake air flows in the two channels, thus affecting the operation of the engine. At the same time, when the engine is in an idle state, since the throttle opening is very small or even completely closed, the amount of gas inhaled by the engine is insufficient, causing abnormal operation problems. Content of the Utility Model

[0003] Aiming at the deficiencies in the prior art, the utility model provides a double-air-supplemented gas supply device. By providing upper and lower air supplement holes, the problem of abnormal operation caused by different intake air flows in the main channel or insufficient gas volume in the idle state is solved.

[0004] To achieve the above object, on the one hand, the utility model provides a double-air-supplemented gas supply device, including a body and two chambers arranged in the body. Each chamber includes a throat, a main channel, an idle channel, and a throttle plate. The upstream of the throat communicates with the main nozzle of the main channel, and the throttle plate is arranged downstream of the throat. An intake pipe is arranged at the bottom of the body. The intake end of the intake pipe communicates with an LPG gas or NG gas pipeline, and the outlet end communicates with the intake ends of the main channel and the idle channel. A plurality of lower air supplement holes are arranged below the throttle plate. The intake end of the lower air supplement hole communicates with the first bypass channel of the main channel, and the outlet end of the lower air supplement hole communicates with the outlet end of the throttle plate. A plurality of upper air supplement holes are arranged above the throttle plate. The intake end of the upper air supplement hole communicates with the second bypass channel of the idle channel, and the outlet end of the upper air supplement hole communicates with the outlet end of the throttle plate.

[0005] The axis of the lower air supplement hole is parallel to the axis of the main channel and perpendicular to the axis of the first bypass channel. The axis of the upper air supplement hole is parallel to the axis of the idle channel and perpendicular to the axis of the second bypass channel.

[0006] The number of the upper air supplement holes is more than that of the lower air supplement holes.

[0007] A stepping motor is arranged on one side of the body and is connected to the throttle plate for controlling the opening degree of the throttle plate.

[0008] Each throttle plate is connected to a throttle shaft component, and the throttle shaft component is connected to the stepping motor.

[0009] The stepper motor is provided with a plug, and the throttle shaft component is provided with a pluggable connector corresponding to the plug.

[0010] A throttle opening adjusting screw is arranged on the throttle shaft component.

[0011] A lower cover is arranged at the lower end of the body; a special-shaped upper cover plate is arranged at the upper end of the body.

[0012] The stepper motor is installed on one side of the body through a special-shaped fixing plate.

[0013] As can be seen from the above solution, the advantages of the present utility model are as follows:

[0014] By arranging upper and lower bidirectional air supplement holes above and below the throttle plate, the present utility model can more conveniently control the gas output, making the engine operation more stable. Description of the Drawings

[0015] Figure 1 is a perspective view of the dual-air-supplement gas supply device of the present utility model;

[0016] Figure 2 is Figure 1 the rear view of

[0017] Figure 3 is Figure 1 the right view of

[0018] Figure 4 is Figure 3 the B-B sectional view of

[0019] Figure 5 is Figure 3 the A-A sectional view of

[0020] Figure 6 is the top view of the body in the dual-air-supplement gas supply device of the present utility model;

[0021] Figure 7 is the bottom view of the body in the dual-air-supplement gas supply device of the present utility model;

[0022] Figure 8 is the perspective view of the stepper motor;

[0023] Figure 9 is the structural diagram of the throttle shaft component;

[0024] Among them, the reference numerals:

[0025] 1 - Dual-air-supplement gas supply device;

[0026] 10 - Body;

[0027] 100 - Lower cover;

[0028] 101 - Special-shaped upper cover plate;

[0029] 11 - L chamber;

[0030] 110 - L chamber throat;

[0031] 111 - L chamber main channel;

[0032] 1110 - L chamber main nozzle;

[0033] 1111 - First bypass channel of L chamber main channel;

[0034] 112 - L chamber idle channel;

[0035] 1121 - Second bypass channel of L chamber idle channel;

[0036] 12 - R chamber;

[0037] 120 - R chamber throat;

[0038] 121 - R chamber main channel;

[0039] 1210 - R chamber main nozzle;

[0040] 1211 - First bypass channel of R chamber main channel

[0041] 122 - R chamber idle channel;

[0042] 1221 - Second bypass channel of R chamber idle channel;

[0043] 13 - First throttle valve piece;

[0044] 14 - Second throttle valve piece;

[0045] 15 - Intake pipe;

[0046] 16u - First upper air compensation hole;

[0047] 16d - First lower air compensation hole;

[0048] 17u - Second upper air compensation hole;

[0049] 17d - Second lower air compensation hole;

[0050] 18 - Stepper motor;

[0051] 180 - Special-shaped fixing plate;

[0052] 181 - Plug;

[0053] 19 - Throttle valve shaft component;

[0054] 190 - Fixed hole;

[0055] 191 - Plug - in connector;

[0056] 192 - Throttle opening adjustment screw. Detailed implementation mode

[0057] The technical solution of the present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and efficacy of the present utility model, but it is not intended to limit the scope of protection of the appended claims of the present utility model.

[0058] References in the specification to "embodiment", "another embodiment", "this embodiment", etc. mean that the described embodiment may include specific features, structures or characteristics, but not every embodiment must include these specific features, structures or characteristics. In addition, such expressions do not refer to the same embodiment. Further, when combining specific features, structures or characteristics in an embodiment, whether or not there is an explicit description, it has been shown that combining such features, structures or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0059] In the specification and subsequent claims, certain terms are used to refer to specific components or parts. Those of ordinary skill in the art should understand that a technical user or manufacturer may use different nouns or terms to refer to the same component or part. The specification and claims do not use the difference in name as a way to distinguish components or parts, but use the difference in function of components or parts as the criterion for distinction. The terms "including" and "comprising" mentioned throughout the specification and claims are open - ended terms and should be interpreted as "including but not limited to". In addition, the term "connected" herein includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0060] It should be noted that in the description of the present utility model, the orientation or positional relationship or parameters indicated by terms such as "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and "about", or "approximately", "substantially", "around" etc. are all based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description content, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific size or be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model.

[0061] The utility model provides a dual-air-supplemented gas supply device, which solves the problem of unstable engine operation caused by insufficient gas output due to different opening degrees of the dual throttle valves or in the idle state.

[0062] The technical solution provided by the utility model to solve the above problems is as follows: upper and lower bidirectional air supplement holes are arranged above and below the throttle plate, and a stepping motor is connected to the throttle shaft component to control the opening and closing of the throttle plate through the stepping motor.

[0063] As Figures 1 to 9 shown, wherein, Figure 1 is a perspective view of the dual-air-supplemented gas supply device 1 provided by an embodiment of the utility model, Figure 2 is Figure 1 the rear view of Figure 3 is Figure 1 the right view of Figure 4 is Figure 3 the B-B sectional view of Figure 5 is Figure 3 the A-A sectional view of Figure 6 is the top view of the body 10, Figure 7 is the bottom view of the body 10, Figure 8 is the perspective view of the stepping motor, Figure 9 is the structural diagram of the throttle shaft component.

[0064] The dual-air-supplemented gas supply device 1 of the utility model includes two chambers arranged in the body 10. Each chamber includes a throat, a main channel, an idle channel, and a throttle plate. The upstream of the throat communicates with the main nozzle of the main channel, and the throttle plate is arranged downstream of the throat.

[0065] Specifically, the body 10 includes an L chamber 11 and an R chamber 12. The L chamber 11 includes an L chamber throat 110, an L chamber main channel 111, an L chamber idle channel 112, and a first throttle plate 13. The R chamber 12 includes an R chamber throat 120, an R chamber main channel 121, an R chamber idle channel 122, and a second throttle plate 14. The upstream of the L chamber throat 110 communicates with the L chamber main nozzle 1110 of the L chamber main channel 111, and the first throttle plate 13 is arranged downstream of the L chamber throat 110; the upstream of the R chamber throat 120 communicates with the R chamber main nozzle 1210 of the R chamber main channel 121, and the second throttle plate 14 is arranged downstream of the R chamber throat 120. Among them, the L chamber main nozzle 1110 and the R chamber main nozzle 1210 are adjustable.

[0066] In this embodiment, an air inlet pipe 15 is arranged at the bottom of the body 10. The air inlet end of the air inlet pipe 15 communicates with the LPG gas or NG gas pipeline, and the air outlet end communicates with the air inlet ends of the main channels (including the L chamber main channel 111 and the R chamber main channel 121) and the idle channels (including the L chamber idle channel 112 and the R chamber idle channel 122).

[0067] In this embodiment, a plurality of lower air supplement holes are arranged below the throttle valve piece. The air inlet end of the lower air supplement hole communicates with the first bypass passage of the main passage, and the air outlet end of the lower air supplement hole communicates with the air outlet end of the throttle valve piece; a plurality of upper air supplement holes are arranged above the throttle valve piece. The air inlet end of the upper air supplement hole communicates with the second bypass passage of the idle speed passage, and the air outlet end of the upper air supplement hole communicates with the air outlet end of the throttle valve piece.

[0068] The axis of the lower air supplement hole is parallel to the axis of the main passage and perpendicular to the axis of the first bypass passage; the axis of the upper air supplement hole is parallel to the axis of the idle speed passage and perpendicular to the axis of the second bypass passage.

[0069] Specifically, a plurality of first lower air supplement holes 16d are arranged below the first throttle valve piece 13. The air outlet end of the first lower air supplement hole 16d communicates with the first bypass passage 1111 of the L-chamber main passage 111. The air outlet end of the first lower air supplement hole 16d communicates with the air outlet end of the first throttle valve piece 13 (not shown in the figure). The axis of the first lower air supplement hole 16d is parallel to the axis of the L-chamber main passage 111 and perpendicular to the axis of the first bypass passage 1111. The axis of the L-chamber main passage 111 is perpendicular to the axis of the first bypass passage 1111; a plurality of first upper air supplement holes 16u are arranged above the first throttle valve piece 13. The air inlet end of the first upper air supplement hole 16u communicates with the second bypass passage 1121 of the L-chamber idle speed passage 112. The air outlet end of the first upper air supplement hole 16u communicates with the air outlet end of the first throttle valve piece 13 (not shown in the figure). The axis of the first upper air supplement hole 16u is parallel to the axis of the L-chamber idle speed passage 112 and perpendicular to the axis of the second bypass passage 1121. The axis of the L-chamber idle speed passage 112 is perpendicular to the axis of the second bypass passage 1121.

[0070] A plurality of second lower air supplement holes 17d are arranged below the second throttle valve piece 14. The air inlet end of the second lower air supplement hole 17d communicates with the first bypass passage 1211 of the R-chamber main passage 121. The air outlet end of the second lower air supplement hole 17d communicates with the air outlet end of the second throttle valve piece 14 (not shown in the figure). The axis of the second lower air supplement hole 17d is parallel to the axis of the R-chamber main passage 121 and perpendicular to the axis of the first bypass passage 1211. The axis of the R-chamber main passage 121 is perpendicular to the axis of the first bypass passage 1211; a plurality of second upper air supplement holes 17u are arranged above the second throttle valve piece 14. The air inlet end of the second upper air supplement hole 17u communicates with the second bypass passage 1221 of the R-chamber idle speed passage 122. The air outlet end of the second upper air supplement hole 17u communicates with the air outlet of the second throttle valve 14 (not shown in the figure). The axis of the second upper air supplement hole 17u is parallel to the axis of the R-chamber idle speed passage 122 and perpendicular to the axis of the second bypass passage 1221. The axis of the R-chamber idle speed passage 122 is perpendicular to the axis of the second bypass passage 1221.

[0071] In this embodiment, the number of upper air supplement holes (including the first upper air supplement hole 16u and the second upper air supplement hole 17u) is more than that of the lower air supplement holes (including the first lower air supplement hole 16d and the second lower air supplement hole 17d). Exemplarily, the number of both the first upper air supplement hole 16u and the second upper air supplement hole 17u is 12, and the number of both the first lower air supplement hole 16d and the second lower air supplement hole 17d is 4. However, this embodiment is not limited thereto and can be adjusted according to actual situations. When the engine is in the idle state, the throttle plate is completely closed. At this time, in order to improve the stability of the engine, the intake air volume of the engine is increased through the upper air supplement holes, and the required gas volume is relatively large. When the engine is running normally and the opening degrees of the throttle plates are inconsistent, the gas volume is adjusted through the lower air supplement holes, and not much intake air volume is required. Therefore, the number of the lower air supplement holes can be set to be less than that of the upper air supplement holes.

[0072] In this embodiment, a stepping motor 18 is provided on one side of the body 10. For example, it is detachably fixed to one side of the body 10 through a special-shaped fixing plate 180, and the special-shaped fixing plate 180 is in an L shape. The stepping motor 18 is connected to the throttle plates (including the first throttle plate 13 and the second throttle plate 14) for controlling the opening degree of the throttle plates. Each throttle plate is connected to a throttle shaft component 19, and the throttle shaft component 19 is connected to the stepping motor 18.

[0073] Specifically, the first throttle plate 13 and the second throttle plate 14 are installed in the fixing holes 190 of the throttle shaft component 19 through fixing parts such as screws. The stepping motor 18 is provided with a plug 181, and the throttle shaft component 19 is provided with a plug-and-play joint 191 corresponding to the plug 181. During use, the plug 181 of the stepping motor 18 is inserted into the plug-and-play joint 191 of the throttle shaft component 19. After the stepping motor 18 is started, the plug 181 drives the throttle shaft component 19 to rotate, thereby driving the first throttle plate 13 and the second throttle plate 14 to rotate, realizing the opening and closing of the throttle plates.

[0074] In this embodiment, a throttle opening degree adjusting screw 192 is provided on the throttle shaft component 19 for controlling the opening degree of the throttle plates (including the first throttle plate 13 and the second throttle plate 14) when the engine is in the idle state.

[0075] In this embodiment, a lower cover 100 is provided at the bottom end of the body 10, and a special-shaped upper cover plate 101 is provided at the top end. The lower cover 100 is connected to the intake pipe 15, and the gas enters the lower cover 100 through the intake pipe 15 and is then split by the lower cover 100 into the R chamber main channel 121, the R chamber idle channel 122, the L chamber main channel 111, and the L chamber idle channel 112. The special-shaped upper cover plate 101 is installed at the top end of the body 10 for sealing the second bypass channel 1121 of the L chamber idle channel, the second bypass channel 1221 of the R chamber idle channel, the first upper air supplement hole 16u, and the second upper air supplement hole 17u.

[0076] During use, according to the requirements of the engine, LPG gas or NG gas is connected to the intake pipe 15. After entering the lower cover 100, it enters the throat through the main nozzles and lower air supplement holes on the main channels of the two chambers and the upper air supplement holes on the idle channels respectively. Then, according to the engine requirements, the opening degree of the throttle plate on the throttle shaft component 19 is adjusted automatically to enable the engine to inhale and burn.

[0077] In summary, the utility model can more conveniently control the gas output by arranging upper and lower bidirectional air supplement holes above and below the throttle plate, making the engine operation more stable.

[0078] The embodiments of the utility model have been described above in conjunction with the accompanying drawings. However, the utility model is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the utility model, those of ordinary skill in the art can also make many forms without departing from the purpose of the utility model and the scope protected by the claims, and all of them belong to the protection scope of the utility model.

Claims

1. A dual-supply gas supply device, comprising a main body and two chambers disposed within the main body, each chamber comprising a throat, a main passage, an idle passage, and a throttle plate, wherein the throat is connected upstream to a main nozzle of the main passage, and the throttle plate is disposed downstream of the throat. An air inlet pipe is provided at the bottom of the body, the air inlet end of the air inlet pipe is connected to the LPG gas or NG gas pipeline, and the air outlet end is connected to the air inlet end of the main channel and the idle channel, and is characterized in that: A plurality of lower air supply holes are provided below the throttle plate, wherein the air inlet ends of the lower air supply holes are connected to the first bypass channel of the main channel, and the air outlet ends of the lower air supply holes are connected to the air outlet end of the throttle plate; A plurality of upper air supply holes are provided above the throttle plate, the air inlet ends of the upper air supply holes are connected to the second bypass channel of the idle channel, and the air outlet ends of the upper air supply holes are connected to the air outlet end of the throttle plate.

2. The dual-air supply gas device according to claim 1, characterized in that: The axis of the lower air-supply hole is parallel to the axis of the main channel and perpendicular to the axis of the first bypass channel; the axis of the upper air-supply hole is parallel to the axis of the idle channel and perpendicular to the axis of the second bypass channel.

3. The dual-air supply gas device according to claim 1, characterized in that: The number of the upper air-supplementing holes is greater than the number of the lower air-supplementing holes.

4. The dual-air supply gas device according to claim 1, characterized in that: A stepping motor is provided on one side of the main body and is connected to the throttle plate for controlling the opening of the throttle plate.

5. The dual-air-supplemented gas supply device according to claim 4, wherein, Each of the throttle plates is connected to a throttle shaft component, and the throttle shaft component is connected to the stepper motor.

6. The dual-air supply gas device according to claim 5, characterized in that: The stepping motor is provided with a plug, and the throttle shaft component is provided with a plug-in connector corresponding to the plug.

7. The dual-air supply gas device according to claim 5, characterized in that: A throttle opening adjustment screw is arranged on the throttle shaft component.

8. The dual-air supplement gas supply device according to any one of claims 1 to 7, characterized in that: A lower cover is provided at the lower end of the body.

9. The dual-air supplement gas supply device according to any one of claims 1 to 7, characterized in that: A special-shaped upper cover plate is provided on the upper end of the main body.

10. The dual-air supplement gas supply device according to any one of claims 4 to 7, characterized in that: The stepping motor is mounted on one side of the body via a special-shaped fixing plate.

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