Check valve type heater methanol nozzle

Abstract

The utility model discloses a one-way valve type heater methanol nozzle which comprises a methanol nozzle body, a methanol channel is arranged in the methanol nozzle body, one end of the methanol channel is connected with a fuel inlet, and the other end of the methanol channel is connected with a fuel injection opening. A one-way valve is arranged at the position where the methanol channel is connected with the fuel inlet, the end, close to the fuel inlet, of the one-way valve is conical, a methanol port is formed in the conical face of the one-way valve, the other end of the one-way valve is connected with a spring, and elastic force of the spring drives the one-way valve to move so that the methanol port and the fuel inlet can be communicated or closed. According to the utility model, the one-way valve is opened to realize spraying of the nozzle only when the pipeline reaches a certain pressure, and the one-way valve is in a closed state under the action of the spring when the heater stops working or the pressure in the initial starting state is low, so that liquid fuel in front of the nozzle is prevented from flowing out, and rapid pressure building is realized; and meanwhile, the conditions of ignition faults and the like caused by the fact that the liquid fuel flows to a nearby ignition electrode are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of heater nozzles, and in particular relates to a one-way valve type heater methanol nozzle. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] With the promotion and use of methanol engines, methanol heaters (water boilers) have been put into use due to their easy installation, low price and good effect.

[0004] The fuel supply process in the methanol heater is as follows Figure 1 As shown, the current methanol heater nozzles are all of a normally open structure, such as Figure 2 As shown in the figure, there is an open circuit structure between the methanol pump and the methanol nozzle, which results in the fuel between the methanol pump and the methanol nozzle flowing out through the methanol nozzle after shutdown. When restarting, the fuel needs to first fill the pipeline in between to gradually build up the required pressure, and then atomize and ignite successfully. Therefore, there are two shortcomings in the current structure: ① The pressure build-up is slow, which is due to the time required to fill the fuel pipeline, and the existence of the through hole causes leakage while filling, which greatly reduces the filling effect; ② The pressure build-up process is a process from small to large, in which the atomization is not good when the pressure is low in the early stage, resulting in ignition difficulties, or the internal liquid fuel flows out, causing the ignition electrode to be wetted and unable to ignite. Utility Model Content

[0005] The utility model aims to provide a one-way valve type heater methanol nozzle, which can realize rapid nozzle pressure building, good atomization and smooth ignition; at the same time, it can also avoid the outflow of liquid fuel under low pressure causing the ignition electrode to be sprayed wet.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] In the first aspect, an embodiment of the utility model provides a one-way valve type heater methanol nozzle, comprising a methanol nozzle body, a methanol channel is arranged in the methanol nozzle body, one end of the methanol channel is connected to the fuel inlet, and the other end is connected to the fuel injection port; a one-way valve is arranged at the position where the methanol channel is connected to the fuel inlet, the one-way valve is conical at one end close to the fuel inlet, a methanol port is arranged on the conical surface of the one-way valve, the other end of the one-way valve is connected to a spring, and the elastic force of the spring drives the one-way valve to move, so that the methanol port is connected to or closed with the fuel inlet.

[0008] As a further technical solution, the end of the methanol channel connected to the fuel inlet is conical, and the conical surface in the methanol channel matches the conical surface on the one-way valve.

[0009] As a further technical solution, a step surface is provided in the methanol channel, one end of the spring is against the step surface, and the other end of the spring is connected to the one-way valve.

[0010] As a further technical solution, the one-way valve is a cylindrical structure with a conical surface, a step surface is provided at the position where the cylinder and the conical surface are connected, and the other end of the spring rests on the step surface.

[0011] As a further technical solution, the inner diameter of the one-way valve cylinder is the same as the inner diameter of the methanol channel.

[0012] As a further technical solution, the methanol ports are provided in a plurality, and the plurality of methanol ports are distributed in a ring shape on the conical surface of the one-way valve, and the middle position of the plurality of methanol ports is a sealing cone surface.

[0013] As a further technical solution, the methanol port is a rectangular through hole.

[0014] As a further technical solution, the inner diameter of the spring is the same as the inner diameter of the methanol channel.

[0015] As a further technical solution, the position where the methanol channel is connected to the fuel injection port is in a conical structure.

[0016] As a further technical solution, when the pressure in the pipeline reaches the one-way valve pressure, the one-way valve opens and the nozzle sprays; the one-way valve pressure is the elastic force of the spring.

[0017] The beneficial effects of the above-mentioned embodiments of the utility model are as follows:

[0018] The methanol nozzle of the valve-type heater provided by the utility model is provided with a one-way valve in the methanol body. The one-way valve will open only when the pipeline reaches a certain pressure to realize nozzle injection. When the heater stops working or the pressure in the initial startup state is low, the one-way valve is in a closed state under the action of a spring, which ensures that the liquid fuel in front of the nozzle is not flowed out, and can realize rapid pressure building. At the same time, it also prevents the liquid fuel from flowing to the nearby ignition electrode to cause ignition failure and the like.

[0019] The utility model provides a methanol nozzle for a one-way valve type heater, in which one end of the one-way valve is arranged as a conical surface, and a methanol port is arranged on the conical surface. The conical surface on the one-way valve can cooperate with the conical surface in the methanol channel. When the heater stops working or is in a low-pressure state, the two conical surfaces are fitted together under the action of a spring, and the conical surface in the methanol channel is used to seal the methanol port. At the same time, the sealing conical surface on the one-way valve is used to seal the fuel inlet, so that the one-way valve is closed. The whole structure is simple and easy to implement.

[0020] The methanol nozzle of the valve-type heater provided by the utility model integrates the one-way valve inside the methanol nozzle, and there is no need to change the original connection relationship. When in use, only the overall nozzle needs to be replaced, which has the advantage of easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 It is the fuel supply process in the existing methanol heater;

[0023] Figure 2 It is a schematic diagram of the structure of an existing methanol nozzle;

[0024] Figure 3 It is a schematic diagram of the one-way valve in the methanol nozzle of the one-way valve type heater of the utility model when the one-way valve is closed;

[0025] Figure 4 It is a schematic diagram of the one-way valve in the methanol nozzle of the one-way valve type heater of the utility model when the one-way valve is opened;

[0026] Figure 5 It is a structural schematic diagram of a one-way valve of the utility model;

[0027] Figure 6 This is the fuel supply process in the methanol heater of the utility model.

[0028] The schematic diagram is for illustrative purposes only;

[0029] Among them, 1. methanol nozzle body; 101. methanol channel; 102. first step surface; 103. first conical surface; 2. spring; 3. one-way valve; 301. second step surface; 302. second conical surface; 303. methanol port; 304. sealing conical surface. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] Explanation of relevant terms:

[0032] Methanol engine: Similar to a gas engine, it is a spark-ignition engine that uses methanol as fuel.

[0033] Methanol heater: Similar to diesel heater, it uses methanol as fuel, burns by ignition, and uses the heat energy of combustion to heat the water in the water jacket to output hot water.

[0034] Methanol pump: A power device that sucks in methanol fuel and outputs it at a certain pressure.

[0035] Example 1

[0036] In a typical implementation of the present invention, Figure 2-5 As shown, a one-way valve type heater methanol nozzle is provided, comprising a methanol nozzle body 1, wherein a methanol channel 101 is arranged in the methanol nozzle body 1, wherein one end of the methanol channel 101 is connected to a fuel inlet, and the other end is connected to a fuel injection port; a one-way valve 3 is arranged at the position where the methanol channel 101 is connected to the fuel inlet, wherein the one-way valve 3 is conical at one end close to the fuel inlet, and a methanol port 303 is arranged on the conical surface of the one-way valve 3, and the other end of the one-way valve 3 is connected to a spring 2, and the elastic force of the spring 2 drives the one-way valve 3 to move, so that the methanol port 303 is connected to or closed with the fuel inlet.

[0037] like Figure 3 As shown, one end of the methanol channel 101 connected to the fuel inlet is conical, and is a first conical surface 103. The first conical surface 103 in the methanol channel 101 matches the second conical surface 302 on the one-way valve 3. When the one-way valve 3 is in a closed state, the first conical surface 103 and the second conical surface 302 fit together, and the methanol port 303 on the second conical surface 302 is blocked by the first conical surface 103, so that the one-way valve 3 is in a closed state.

[0038] Furthermore, a first step surface 102 is provided in the methanol channel 101 , one end of the spring 2 is against the step surface, and the other end of the spring 2 is connected to the one-way valve 3 .

[0039] like Figure 4 and 5 As shown, the one-way valve 3 is a cylindrical structure with a second conical surface 302 , a second step surface 301 is provided at the position where the cylinder and the second conical surface 302 are connected, and the other end of the spring 2 is against the second step surface 301 .

[0040] In this embodiment, the inner diameter of the one-way valve cylinder is the same as the inner diameter of the methanol channel 101. Methanol enters the one-way valve cylinder through the methanol port 303 on the one-way valve 3. Methanol will not be hindered in the process of entering the fuel injection port from the one-way valve.

[0041] In this embodiment, the methanol ports 303 are provided in plurality, and the plurality of methanol ports 302 are distributed in a ring shape on the second conical surface 302 of the one-way valve 3 , and the middle position of the plurality of methanol ports 303 is a sealing cone surface 304 , and the fuel inlet is blocked by the provided sealing cone surface 304 .

[0042] In this embodiment, the methanol port 303 is a rectangular through hole.

[0043] In this embodiment, the inner diameter of the spring 2 is the same as the inner diameter of the methanol channel 101 , and the arrangement of the spring 2 will not hinder the flow of methanol in the nozzle.

[0044] In this embodiment, the position where the methanol channel is connected to the fuel injection port is in a conical structure, so that the speed of the sprayed methanol droplets gradually increases when passing through the cone port, forming a stable and uniform conical spray, which ensures that the spray coverage area is wide and evenly distributed, and can achieve the ideal effect.

[0045] Furthermore, when the pressure in the pipeline reaches the one-way valve pressure, the one-way valve opens and the nozzle sprays; the one-way valve pressure is the elastic force of the spring.

[0046] The fuel supply process of the one-way valve type heater methanol nozzle provided in this embodiment is as follows Figure 6 As shown, its working principle is:

[0047] Assume the one-way valve opening pressure is P. When the fuel inlet pressure reaches this pressure, the one-way valve moves left. Figure 4 As shown, the fuel enters the injection port of the fuel nozzle through the methanol port on the valve body for injection, thereby ensuring the injection pressure and avoiding the occurrence of low-pressure injection.

[0048] When the heater stops working or the pressure in the initial startup state is low, under the action of the spring, the conical surface of the one-way valve is close to the conical surface of the methanol channel, sealing the methanol port on the conical surface of the one-way valve, so that the one-way valve is in a closed state, ensuring that the liquid fuel in front of the nozzle does not flow out, achieving rapid pressure buildup, and also preventing the liquid fuel from flowing to the nearby ignition electrode and causing ignition failures.

[0049] Therefore, the utility model can realize the rapid pressure build-up of the nozzle, achieve good atomization, and relatively smooth ignition; at the same time, it can also prevent the outflow of liquid fuel under low pressure from wetting the ignition electrode. The structure is simple, easy to implement, and can be promoted and used in batches.

[0050] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A one-way valve type heater methanol nozzle, characterized in that: The invention comprises a methanol nozzle body, wherein a methanol channel is arranged in the methanol nozzle body, wherein one end of the methanol channel is connected to a fuel inlet, and the other end is connected to a fuel injection port; a one-way valve is arranged at a position where the methanol channel is connected to the fuel inlet, wherein the one-way valve is tapered at one end close to the fuel inlet, a methanol port is arranged on the tapered surface of the one-way valve, and the other end of the one-way valve is connected to a spring, and the elastic force of the spring drives the one-way valve to move, so that the methanol port is connected to or closed with the fuel inlet.

2. The one-way valve type heater methanol nozzle according to claim 1, characterized in that: One end of the methanol channel connected to the fuel inlet is tapered, and the tapered surface in the methanol channel matches the tapered surface on the one-way valve.

3. The one-way valve type heater methanol nozzle according to claim 1, characterized in that: A step surface is arranged in the methanol channel, one end of the spring is against the step surface, and the other end of the spring is connected to the one-way valve.

4. The one-way valve type heater methanol nozzle according to claim 3, characterized in that: The one-way valve is a cylindrical structure with a conical surface. A step surface is arranged at the position where the cylinder and the conical surface are connected, and the other end of the spring abuts against the step surface.

5. The one-way valve type heater methanol nozzle according to claim 3, characterized in that: The inner diameter of the check valve cylinder is the same as the inner diameter of the methanol channel.

6. The one-way valve type heater methanol nozzle according to claim 1, characterized in that: There are multiple methanol ports, which are distributed in a ring shape on the conical surface of the one-way valve, and the middle positions of the multiple methanol ports are sealing cone surfaces.

7. The one-way valve type heater methanol nozzle according to claim 6, characterized in that: The methanol port is a rectangular through hole.

8. The one-way valve type heater methanol nozzle according to claim 1, characterized in that: The inner diameter of the spring is the same as the inner diameter of the methanol channel.

9. The one-way valve type heater methanol nozzle according to claim 1, characterized in that: The position where the methanol channel is connected to the fuel injection port is in a conical structure.

10. The one-way valve type heater methanol nozzle according to claim 1, characterized in that: When the pressure in the pipeline reaches the one-way valve pressure, the one-way valve opens and the nozzle sprays; the one-way valve pressure is the elastic force of the spring.

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