Gas parking warm air supply assembly, gas parking warm air device and vehicle

Abstract

The utility model relates to a fuel gas parking warm air supply assembly, a fuel gas parking warm air device and a vehicle, the parking warm air device directly adopts fuel gas as fuel, the device can guide gaseous fuel gas in a gas cylinder into a recovery pipeline through a warm air supply pipe to be directly used as fuel, and a fuel oil supply system is not needed; when the pressure of the gas cylinder is high, the gaseous gas recovery pipeline discharges gas into the warm air supply pipe; when the pressure of the gas cylinder is low, pressurization is conducted through the self-pressurization pipeline and the pressure adjusting assembly in the cylinder, it is guaranteed that supply of gaseous gas and the pressure of the gas cylinder are stable, and gas supply of an engine is not affected, so that the problem that when a parking heating device with diesel oil as fuel is applied to an LNG vehicle, an additional fuel oil supply system needs to be added, and the fuel oil supply system is wasted is solved. Meanwhile, the fuel gas can be fully utilized, the economical efficiency is improved, and the situation that the pressure in the gas cylinder is too high and exceeds the set value of the safety valve during parking, and then the gas is discharged into the atmosphere is avoided.

Description

Technical Field

[0001] This application relates to the field of vehicle heating technology, and in particular to a gas-fired parking heater supply component, a gas-fired parking heater device, and a vehicle. Background Technology

[0002] Currently, parking heaters use diesel fuel, while LNG vehicles use natural gas as their driving energy. Parking heaters that use diesel fuel require an additional fuel storage and supply system, including a fuel tank, fuel lines, fuel pump, and fuel filter, which increases weight and occupies space in the vehicle.

[0003] In addition, due to the characteristics of the LNG supply system and the properties of LNG itself, the internal pressure of the gas cylinder will continue to rise when the vehicle is not in operation, until the safety valve opens and the gaseous natural gas is released into the atmosphere, resulting in waste.

[0004] Therefore, how to utilize the vehicle's own fuel supply system to supply fuel to the parking heater without adding an additional fuel supply system, so as to ensure the normal operation of the parking heater and the stable and reliable operation of the gas system, is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a gas-fired parking heater supply component, a gas-fired parking heater device, and a vehicle to solve the problems in related technologies where, when a parking heater device using diesel fuel is applied to an LNG vehicle, an additional fuel supply system is required, and when the gas cylinder pressure is too high when parked and exceeds the safety valve setting value, it will be released into the atmosphere, resulting in gas waste.

[0006] In a first aspect, a gas-fired parking heater supply component is provided, comprising:

[0007] The gas cylinder has its liquid outlet connected to the engine's air supply line.

[0008] A gaseous fuel recovery pipeline has one end connected to the gas phase space of the gas cylinder and the other end connected to the engine air supply pipeline.

[0009] A warm air supply pipe is connected to the gaseous fuel recovery pipe;

[0010] The self-pressurizing pipeline has its two ends connected to the inside of the gas cylinder, and is equipped with an internal pressure regulating component.

[0011] In some embodiments, the engine air supply line includes a one-way valve, a liquid supply shut-off valve, a carburetor, and a buffer tank connected in sequence; the one-way valve is connected to the liquid outlet of the gas cylinder.

[0012] In some embodiments, the gaseous gas recovery pipeline includes an economy valve and a three-way valve connected in sequence; the first port of the three-way valve is connected to the economy valve, the second port is connected to the pipeline between the check valve and the liquid supply shut-off valve, and the third port is connected to the warm air supply pipeline.

[0013] In some embodiments, the heating air supply pipe includes a pressure reducing valve and a pressure regulating valve connected in sequence; the pressure regulating valve is used to connect to a gas-powered parking heater.

[0014] In some embodiments, one end of the self-pressurizing pipeline is connected to the pressurized liquid outlet of the gas cylinder, and the other end is connected to the top gas phase space of the gas cylinder.

[0015] The pressure regulating assembly inside the bottle includes a pressure boosting shut-off valve, a pressure regulating valve, and a heat-absorbing finned tube arranged sequentially along the flow direction of the liquid gas in the self-pressurizing pipeline; the heat-absorbing finned tube is located on the outside of the self-pressurizing pipeline.

[0016] In some embodiments, the cylinder pressure regulating assembly further includes a pump body and a first controller, as well as a pressure detection element disposed inside the gas cylinder; the first controller is signal-connected to the pump body, the pressure detection element, and the pressure boosting shut-off valve.

[0017] Secondly, a gas-fired parking heater is provided, comprising:

[0018] The heater assembly has an air inlet connected to a combustion air acquisition component and a gas inlet connected to a gas parking heater supply component.

[0019] An exhaust gas discharge assembly is connected to the gas phase space of the heater assembly.

[0020] In some embodiments, the heater assembly includes a chamber for heating air and a heating component for heating the air inside the chamber; the chamber for heating air is connected to a cold air inlet and a hot air outlet.

[0021] The heating assembly includes an intake pump, a mixing chamber, and a combustion chamber connected in sequence; the outlet of the combustion chamber is connected to the exhaust gas discharge assembly; the intake pump is connected to the combustion air acquisition assembly; and the mixing chamber is also connected to the gas-fired parking heater supply assembly.

[0022] In some embodiments, the heating assembly further includes a combustion chamber spark plug, a combustion chamber temperature sensor, a second controller, and a gas leak alarm; the second controller is signal-connected to the combustion chamber spark plug, the combustion chamber temperature sensor, and the gas leak alarm to control the combustion chamber spark plug to ignite and monitor gas leaks.

[0023] Thirdly, a vehicle is provided that includes: the above-mentioned gas-fired parking heater.

[0024] The beneficial effects of the technical solution provided in this application include:

[0025] This application provides a gas-fired parking heater supply component, a gas-fired parking heater device, and a vehicle. Since the parking heater device directly uses natural gas as fuel, it can directly use the gaseous gas from the cylinder into the gaseous gas recovery pipeline via the heater supply pipe, eliminating the need for a fuel supply system. When the cylinder pressure is high, the gaseous gas recovery pipeline discharges gas into the heater supply pipe; when the cylinder pressure is low, it is pressurized through a self-pressurizing pipeline and an internal pressure regulating component to ensure the supply of gaseous gas and maintain cylinder pressure stability. This solves the problem of needing an additional fuel supply system when diesel-fueled parking heater devices are used in LNG vehicles. It also solves the problem of excessive pressure in the cylinder exceeding the safety valve setting when the vehicle is parked, leading to the release of gas into the atmosphere, thus fully utilizing natural gas and avoiding waste. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the gas-fired parking heater supply component provided in the embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the structure of a gas-fired parking heater provided in an embodiment of this application.

[0029] In the diagram: 1. Gas cylinder; 2. Engine air supply line; 200. One-way valve; 201. Liquid supply shut-off valve; 202. Carburetor; 203. Buffer tank; 3. Gaseous fuel recovery line; 300. Economy valve; 301. Three-way valve; 4. Heater air supply line; 400. Pressure reducing valve; 401. Pressure regulating valve; 5. Self-pressurizing line; 6. Cylinder pressure regulating assembly; 600. Pressure boosting shut-off valve; 601. Pressure boosting regulating valve; 602. Heat-absorbing finned tube; 7. Heater assembly; 8. Combustion air acquisition assembly; 9. Exhaust gas exhaust assembly. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Current situation: Existing natural gas vehicles use diesel fuel for their parking heaters, which include a fuel tank, fuel filter, fuel pump, and heater. During operation, the fuel pump draws diesel fuel from the tank, which is atomized by the heater, mixed with air, and ignited by the ignition device to generate heat. The challenge is to find a solution that utilizes the vehicle's existing fuel supply system to power the parking heater without requiring an additional fuel supply system, ensuring both the normal operation of the parking heater and a stable and reliable natural gas system.

[0032] The reason for the unstable pressure is that, due to the characteristics of LNG, the cylinder is not completely insulated and will absorb external heat (engine heat, heat from external components, etc.), causing the pressure inside the cylinder to rise continuously. The usual solution is to release it into the atmosphere when a set safety value is reached, which results in some waste.

[0033] In addition, LNG cylinders contain both liquid and gaseous components. To make better use of the gaseous portion, an economic loop is usually set up to prioritize the use of this gaseous portion. The economic loop is the portion of the gaseous fuel recovery pipeline 3 excluding the three-way valve.

[0034] The economic valve in the economic loop plays a crucial regulatory role in the liquefied natural gas (LNG) system. Its main function is to automatically open when the pressure inside the cylinder exceeds a preset value, allowing saturated vapor from the gas phase space at the top of the cylinder to enter the gas supply line, thereby reducing the pressure inside the cylinder. When the pressure inside the cylinder drops below the set value, the economic valve closes, and the system resumes liquid supply mode. In this way, the economic valve allows for flexible switching between gas and liquid in the cylinder, ensuring economical and stable system operation.

[0035] This application provides a gas-fired parking heater supply component, a gas-fired parking heater device, and a vehicle to solve the problems in related technologies where, when a parking heater device using diesel fuel is applied to an LNG vehicle, an additional fuel supply system is required, and when the gas cylinder pressure is too high when parked and exceeds the safety valve setting value, it will be released into the atmosphere, resulting in gas waste.

[0036] That is, how to utilize the vehicle's own fuel supply system to supply fuel for the parking heater without wasting some of the gaseous fuel discharged into the air, without needing to add an extra fuel supply system, so as to ensure the normal operation of the parking heater while ensuring the stable and reliable operation of the gas system.

[0037] Firstly, please refer to Figure 1 A gas-fired parking heater supply assembly, comprising:

[0038] Gas cylinder 1, whose liquid outlet is connected to engine air supply line 2;

[0039] The gaseous fuel recovery pipeline 3 is connected at one end to the gas phase space of the gas cylinder 1 and at the other end to the engine air supply pipeline 2.

[0040] The heating air supply pipe 4 is connected to the gaseous gas recovery pipe 3;

[0041] The self-pressurizing pipeline 5 has its two ends connected to the inside of the gas cylinder 1, and is equipped with an internal pressure regulating component 6.

[0042] The parking heater system, which uses natural gas as fuel, is designed to directly supply natural gas to the gas cylinder 1 via the heating air supply pipe 4. This allows the natural gas to be used directly as fuel, eliminating the need for a fuel supply system and preventing the release of natural gas into the atmosphere, thus avoiding waste.

[0043] In addition, since the gas cylinder is not completely insulated and absorbs heat, when the pressure of gas cylinder 1 rises, the gaseous gas recovery pipeline 3 discharges the gas into the heater supply pipeline 4; this corresponds to the normal operation of a vehicle engine, at which time fuel can be continuously supplied.

[0044] When the pressure in cylinder 1 is low, i.e., when the engine is not running, the pressure is increased through the self-pressurization line 5 and the cylinder pressure regulating component 6 to ensure the supply of gaseous fuel and stabilize the pressure in cylinder 1. This addresses the issue of needing an additional fuel supply system when using a diesel-fueled parking heater in an LNG vehicle. It also solves the problem of excessive pressure in the cylinder exceeding the safety valve's set value and being released into the atmosphere when the vehicle is parked, thus maximizing the use of fuel and avoiding waste. In this situation, the cylinder pressure regulating component 6 typically heats the liquid fuel in the self-pressurization line 5 to condense it into a gaseous state, as explained in detail later.

[0045] In some preferred embodiments, the engine air supply line 2 includes a one-way valve 200, a liquid supply shut-off valve 201, a carburetor 202, and a buffer tank 203 connected in sequence; the one-way valve 200 is connected to the liquid outlet of the gas cylinder 1.

[0046] The gaseous gas recovery pipeline 3 includes an economy valve 300 and a three-way valve 301 connected in sequence; the first port of the three-way valve 301 is connected to the economy valve 300, the second port is connected to the pipeline between the check valve 200 and the liquid supply shut-off valve 201, and the third port is connected to the heating gas supply pipeline 4.

[0047] In this embodiment, the heater supply pipe 4 draws air directly from the three-way valve 301, rather than directly from the carburetor 202. The advantage of this is that when the engine is not running, no heat is generated, which effectively prevents the carburetor 202 from freezing. This also effectively avoids the carburetor 202 freezing and failing due to continuous use of the gas-powered parking heater after the engine stops, which could cause gas system malfunctions when restarted due to low-temperature gas.

[0048] In some preferred embodiments, to ensure uniform pressure of the gaseous fuel gas, the heating air supply pipe 4 includes a pressure reducing valve 400 and a pressure regulating valve 401 connected in sequence; the pressure regulating valve 401 is used to connect to the gas-powered parking heater. The pressure reducing valve 400 and the pressure regulating valve 401 are used for adjustment.

[0049] In some preferred embodiments, the self-pressurization function of the gas-fired parking heater supply component is described in detail:

[0050] The first type uses automatic gravity for circulation.

[0051] One end of the self-pressurizing pipeline 5 is connected to the pressurizing outlet of gas cylinder 1, and the other end is connected to the top gas phase space of gas cylinder 1.

[0052] The pressure regulating assembly 6 inside the bottle includes a pressure boosting shut-off valve 600, a pressure boosting regulating valve 601, and a heat-absorbing finned tube 602 arranged sequentially along the flow direction of the liquid gas in the self-pressurizing pipeline 5; the heat-absorbing finned tube 602 is located on the outside of the pipeline of the self-pressurizing pipeline 5.

[0053] When the pressure is reduced, the pressure-boosting shut-off valve 600 opens, and the liquid gas flows through the self-pressurizing pipeline 5. It also exchanges heat with the outside world through the heat-absorbing finned tube 602. The outside heat can be the heat from electric heating, which is converted into gaseous gas and re-enters the gas cylinder 1 to achieve pressure regulation. In this embodiment, the flow of liquid gas relies on gravity. The pressure-boosting regulating valve 601 can fix the pressure value in the pipeline.

[0054] The self-pressurization function is always on, ensuring that the pressure in the self-pressurization line 5 is always greater than the pressure in the heating air supply line 4. When the internal pressure of the gas cylinder rises to the set pressure of the pressure regulating valve, the pressure regulating valve automatically closes.

[0055] The first type is a cycle with control and regulation.

[0056] The internal pressure regulating assembly 6 also includes a pump body and a first controller, as well as a pressure detection device installed inside the gas cylinder 1; the first controller is signal-connected to the pump body, the pressure detection device and the pressure shut-off valve 600.

[0057] The pump accelerates the flow of liquid in the self-pressurizing pipeline 5, and the first controller adjusts the pump speed and the opening degree of the pressurizing shut-off valve 600 based on the pressure information from the pressure detection device, thus achieving adjustment in multiple ranges.

[0058] Secondly, see Figure 2 A gas-fired parking heater is provided, comprising:

[0059] The heater assembly 7 has an air inlet connected to a combustion air acquisition component 8, and a gas inlet connected to a gas parking heater supply component.

[0060] The exhaust gas discharge component 9 is connected to the gas phase space of the heater assembly 7.

[0061] The heater assembly 7 is provided with a chamber for heating air and a heating component for heating the air in the chamber for heating air; the chamber for heating air is connected to a cold air inlet and a hot air outlet.

[0062] The heating assembly includes an intake pump, a mixing chamber, and a combustion chamber connected in sequence; the outlet of the combustion chamber is connected to the exhaust gas discharge assembly 9; the intake pump is connected to the combustion air acquisition assembly 8; and the mixing chamber is also connected to the gas-fired parking heater supply assembly.

[0063] The above describes the process where gaseous combustion gas and air are mixed in the mixing chamber, then enter the combustion chamber to heat the cold air entering the air chamber to be heated; and finally, the heated cold air is turned into hot air and discharged.

[0064] The heating assembly further includes a combustion chamber spark plug, a combustion chamber temperature sensor, a second controller, and a gas leak alarm. The second controller is connected to the combustion chamber spark plug, the combustion chamber temperature sensor, and the gas leak alarm to control the combustion chamber spark plug for ignition and to monitor gas leaks.

[0065] Thirdly, a vehicle includes a gas-fired parking heater. The vehicle is powered by LNG (natural gas). The gas supply system of the parking heater is shared with the vehicle's engine gas supply system, making full use of fuel, avoiding waste, and effectively preventing carburetor freezing. Simultaneously, the self-pressurizing system (in-cylinder pressure regulating component 6) continuously operates to maintain stable pressure within the gas cylinder, preventing malfunctions in the vehicle's gas supply system. The vehicle does not require an additional fuel supply system, reducing weight and cost.

[0066] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0067] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0068] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A gas-fired parking heater supply component, characterized in that, It includes: Gas cylinder (1), whose outlet is connected to engine air supply line (2); A gaseous fuel recovery pipeline (3) is connected at one end to the gas phase space of the gas cylinder (1) and at the other end to the engine gas supply pipeline (2); The warm air supply pipe (4) is connected to the gaseous gas recovery pipe (3); The self-pressurizing pipeline (5) is connected at both ends to the interior of the gas cylinder (1) and is equipped with an internal pressure regulating component (6).

2. The gas-fired parking heater supply assembly as described in claim 1, characterized in that: The engine air supply line (2) includes a one-way valve (200), a liquid supply shut-off valve (201), a carburetor (202), and a buffer tank (203) connected in sequence; the one-way valve (200) is connected to the liquid outlet of the gas cylinder (1).

3. The gas-fired parking heater supply assembly as described in claim 2, characterized in that: The gaseous gas recovery pipeline (3) includes an economy valve (300) and a three-way valve (301) connected in sequence; the first port of the three-way valve (301) is connected to the economy valve (300), the second port is connected to the pipeline between the one-way valve (200) and the liquid supply shut-off valve (201), and the third port is connected to the warm air supply pipeline (4).

4. The gas-fired parking heater supply assembly as described in claim 3, characterized in that: The heating air supply pipe (4) includes a pressure reducing valve (400) and a pressure regulating valve (401) connected in sequence; the pressure regulating valve (401) is used to connect to the gas-powered parking heater.

5. The gas-fired parking heater supply assembly as described in claim 1, characterized in that: One end of the self-pressurizing pipeline (5) is connected to the pressurizing outlet of the gas cylinder (1), and the other end is connected to the top gas phase space of the gas cylinder (1). The pressure regulating assembly (6) inside the bottle includes a pressure-boosting shut-off valve (600), a pressure-boosting regulating valve (601), and a heat-absorbing finned tube (602) arranged sequentially along the flow direction of the liquid gas in the self-pressurizing pipeline (5); the heat-absorbing finned tube (602) is located on the outside of the self-pressurizing pipeline (5).

6. The gas-fired parking heater supply assembly as described in claim 5, characterized in that: The pressure regulating assembly (6) inside the cylinder also includes a pump body and a first controller, as well as a pressure detection device installed inside the gas cylinder (1); the first controller is signal connected to the pump body, the pressure detection device and the pressure shut-off valve (600).

7. A gas-fired parking heater, characterized in that, It includes: The heater assembly (7) has an air inlet connected to a combustion air acquisition component (8) and a gas inlet connected to a gas-fired parking heater supply component as described in any one of claims 1-6. The exhaust gas discharge assembly (9) is connected to the heater assembly (7) in the morning gas phase space.

8. The gas-fired parking heater as described in claim 7, characterized in that: The heater assembly (7) is provided with a chamber for heating air and a heating component for heating the air in the chamber for heating air; the chamber for heating air is connected to a cold air inlet and a hot air outlet; The heating assembly includes an intake pump, a mixing chamber, and a combustion chamber connected in sequence; the outlet of the combustion chamber is connected to the exhaust gas discharge assembly (9); the intake pump is connected to the combustion air acquisition assembly (8); the mixing chamber is also connected to the gas-fired parking heater supply assembly.

9. The gas-fired parking heater as described in claim 8, characterized in that: The heating assembly also includes a combustion chamber spark plug, a combustion chamber temperature sensor, a second controller, and a gas leak alarm; the second controller is signal-connected to the combustion chamber spark plug, the combustion chamber temperature sensor, and the gas leak alarm to control the combustion chamber spark plug for ignition and monitor gas leaks.

10. A vehicle, characterized in that, It includes: The gas-fired parking heater as described in claim 9.

Images