Combustion chamber for parking heater

Abstract

The utility model discloses a combustion chamber for a parking heater, which belongs to the technical field of parking heaters and comprises an oil inlet pipe, a sintered felt, an inner chamber cover, an outer chamber cover, a flame gathering cover and an outer cover. The oil pipe, the sintered felt, the inner chamber cover and the flame gathering cover are all installed on a base of the combustion chamber, the base is of a cylindrical structure with an opening in the upper portion, and the inner chamber cover and the flame gathering cover are both arranged above the side wall of the base; the flame gathering cover is arranged on the inner side of the inner chamber cover; the flame gathering cover is of a trumpet-shaped structure, a circular opening is formed in the upper portion of the inner chamber cover, and a plurality of air inlet holes are formed in the side wall of the inner chamber cover. According to the utility model, burning flames can be gathered, and the heating process is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of parking heaters, in particular to a combustion chamber used for parking heaters. Background Art

[0002] The parking heater is an on-board heating device independent of the car engine, with its own fuel pipeline, circuit, combustion heating device and control device, etc. It can preheat the engine and cab of a car parked in a cold winter environment without starting the engine, to eliminate the cold start wear of the car.

[0003] The parking heater heats the coolant in the radiator by burning the fuel in the car, so as to heat the interior of the car and the engine without starting the car. Specifically, the parking heater system first pumps a small amount of fuel from the fuel tank into the combustion chamber in the parking heater, and then the fuel heated and atomized by the combustion chamber is burned here; the heat of the combustion is used to heat the vehicle coolant. The heated coolant circulates in the car, flows through the warm air radiator, and heats the car compartment. At the same time, the engine is also preheated.

[0004] The working process of the parking heater system can be divided into five working steps: intake stage, fuel injection stage, mixing stage, ignition and combustion stage, and heat exchange stage. The combustion chamber of the parking heater system is the component where the fuel is ignited and burned for heating.

[0005] The Chinese utility model patent (application number: 202310418123.6) discloses a porous medium parking heater, in which a porous medium device is provided in a shell; the porous medium device includes a shell and a combustion device located in the shell; one end of the shell close to the air inlet is an open end, and the other end is a closed end; the combustion device includes a combustion chamber, and the combustion chamber is filled with porous medium; the combustion device also includes an atomization device, which is located close to the open end of the shell, and a premixing chamber is provided between the atomization device and the combustion chamber, and the premixing chamber is respectively connected to the atomization device and the combustion chamber; the premixing chamber is also connected to the space at the open end of the shell; the atomization device includes an atomization felt, an oil pump and an ignition plug; the ignition plug is close to the atomization felt, and the oil pump is connected to the atomization felt through an oil pipe.

[0006] The utility model adopts a combination of porous media and atomizing device, and the mixed gas starts to burn in the porous media, so that the combustion is more complete.

[0007] However, the manufacture of porous media requires high-precision processing technology and relatively high manufacturing requirements, which will lead to high costs and is not conducive to large-scale use in vehicles.

[0008] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0009] The utility model aims to provide a combustion chamber for a parking heater, which can gather the burning flame and make the heating process more uniform.

[0010] To achieve the above object, the utility model provides a combustion chamber for a parking heater, comprising an oil inlet pipe, a sintered felt, an inner chamber cover, an outer chamber cover, a flame condenser cover and an outer cover; the oil pipe, the sintered felt, the inner chamber cover and the flame condenser cover are all installed on a base of the combustion chamber, and the base is a cylindrical structure with an opening on the top;

[0011] The oil inlet pipe is arranged at the bottom of the combustion chamber, and the sintered felt is fixed to the upper surface of the base through a sintered felt pressing plate; the liquid outlet of the oil inlet pipe is connected to the opening at the bottom center of the base, and the liquid inlet of the oil inlet pipe is connected to the fuel pump;

[0012] The inner chamber cover and the flame collecting cover are both arranged above the side wall of the base; the flame collecting cover is arranged on the inner side of the inner chamber cover; the flame collecting cover is a trumpet-shaped structure, the circular opening below it is the same size as the opening above the base, and the circular opening above it is smaller than the opening below; the inner chamber cover is a cylindrical structure, and the opening below it is a trumpet-shaped structure; a circular opening is arranged above the inner chamber cover, and a plurality of air inlet holes are arranged on the side wall of the inner chamber cover;

[0013] An outer cover is arranged on the inner chamber cover, and the top of the inner side of the outer cover is fixed to the top of the outer side of the inner chamber cover; a circular opening is arranged above the outer cover, and the opening is the same as the opening above the inner chamber cover 3, and both have a diameter of 20-30mm; an air inlet is provided between the bottom of the outer cover and the bottom of the inner chamber cover, and an air channel is provided between the inner wall of the outer cover and the outer wall of the inner chamber cover; the outer chamber cover is a cylindrical structure, which is fixed above the outer cover, and a circular opening is provided on the top of the outer chamber cover, and its diameter is 20-30mm.

[0014] In one or more embodiments, the side of the base is further provided with an opening for installing an igniter.

[0015] In one or more embodiments, the sintered felt pressing plate is a circular ring-shaped structure, and the edge of the sintered felt is fixed on the base.

[0016] In one or more embodiments, the oil inlet pipe has a diameter of 4-6 mm.

[0017] In one or more embodiments, the sintered felt is a metal woven mesh.

[0018] In one or more embodiments, a nozzle is further disposed on the bottom opening of the base.

[0019] In one or more embodiments, a protrusion extends outwardly from the top of the side wall of the base, and the flame condenser cover and the inner chamber cover are both fixed on the protrusion.

[0020] In one or more embodiments, the air inlet hole is disposed at the bottom of the side wall.

[0021] Compared with the prior art, a combustion chamber for a parking heater according to the utility model is provided with a flame collecting hood above the sintered felt to gather the burning flame, reduce heat loss, and improve the thermal efficiency of the parking heater. In addition, the flame is more concentrated and stable, and the heating process is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of a combustion chamber for a parking heater according to one embodiment of the utility model.

[0023] Figure 2 It is a schematic diagram of a flame hood for a combustion chamber of a parking heater according to an embodiment of the present utility model.

[0024] Description of main reference numerals:

[0025] 1- oil inlet pipe, 2- sintered felt, 3- inner chamber cover, 4- outer chamber cover, 5- flame hood, 6- base, 7- sintered felt pressure plate, 8- outer cover, 301- air inlet. DETAILED DESCRIPTION

[0026] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0027] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0028] like Figure 1 to Figure 2 As shown, a combustion chamber for a parking heater according to an embodiment of the utility model comprises an oil inlet pipe 1, a sintered felt 2, an inner chamber cover 3, an outer chamber cover 4 and a flame condenser cover 5. The oil inlet pipe 1, the sintered felt 2, the inner chamber cover 3 and the flame condenser cover 5 are all installed on a base 6 of the combustion chamber, and the base 6 is a cylindrical structure with an opening on the top, and an opening is provided at the center of the bottom.

[0029] The side of the base 6 is also provided with an opening for installing an igniter.

[0030] The oil inlet pipe 1 is arranged at the bottom of the entire combustion chamber, specifically installed below the base 6 of the combustion chamber. The sintered felt 2 is a circular structure, which is fixed to the upper surface of the base 6 by a sintered felt pressing plate 7. The sintered felt pressing plate 7 is a circular ring structure, which fixes the edge of the sintered felt 2 on the base 6.

[0031] The liquid outlet of the oil inlet pipe 1 is connected to the opening at the bottom center of the base 6. The liquid inlet of the oil inlet pipe 1 is connected to the fuel pump, and the fuel is pumped from the fuel barrel to the sintered felt 2 under the action of the pump. The diameter of the oil inlet pipe 1 is 4-6 mm, preferably 5 mm. Through the small-sized oil inlet pipe 1, high-flow rate fuel can be sprayed onto the sintered felt 2. The oil inlet pipe 1 is a thickened structure, which can extend the service life.

[0032] The sintered felt 2 is a metal woven mesh, which is made of metal fibers with a diameter of micrometers through non-woven laying, stacking and high-temperature sintering. The multi-layer metal fiber felt forms a pore gradient with different pore diameter layers, which can atomize the fuel when the fuel passes through, thereby increasing the combustion efficiency. The atomized fuel is burned in the cylindrical structure of the base 6.

[0033] In addition, a nozzle may be provided on the bottom opening of the base 6 to spray the fuel into droplets, so as to distribute the fuel more evenly on the sintered felt 2 .

[0034] In the combustion chamber, when the fuel is sprayed out from the liquid outlet of the fuel inlet pipe 1, larger droplets will be formed, which will cause the fuel to be unable to mix evenly with the air and thus cannot be fully burned. Some fuel droplets will also be carried by the fuel gas through the chimney and discharged into the atmosphere, greatly reducing the combustion efficiency.

[0035] The fuel can be atomized into tiny particles by the sintered felt 2 to increase the contact area between the fuel and the air, thereby improving the combustion efficiency. In addition, the atomized fuel can also reduce the emission of unburned fuel, which is of great significance to environmental protection.

[0036] The inner chamber cover 3 and the flame focusing cover 5 are both arranged above the side wall of the base 6. Specifically, a protrusion extends outward from the top of the side wall of the base 6, and the flame focusing cover 5 and the inner chamber cover 3 are both fixed on the protrusion, preferably by welding.

[0037] The flame gathering hood 5 is arranged on the inner side of the inner chamber hood 3, and is used to gather the burning flame. The flame gathering hood 5 is a trumpet-shaped structure, and the circular opening below it is the same size as the opening above the base 6, both of which are 50-55mm; the circular opening above it is smaller than the opening below, thereby gathering the burning flame. The diameter of the opening above the flame gathering hood 5 is 20-30mm, preferably 25mm. Specifically, the cross section of the flame gathering hood 5 is a tapered structure, which gathers the flame burning in the base 6, so that the outer flame of the flame can extend from the opening above it, and the gathered flame can improve the heat conduction efficiency and the heating efficiency.

[0038] The inner chamber cover 3 is a cylindrical structure, and the opening at the bottom thereof is a trumpet-shaped structure, which is used to be fixedly connected to the protrusion on the top of the side wall of the base 6. A circular opening is also provided above the inner chamber cover 3, through which the outer flame of the flame can extend; the diameter of the opening above the inner chamber cover 3 is 20-30 mm, preferably 25 mm. A plurality of air inlet holes 301 are provided on the side wall of the inner chamber cover 3, and the air inlet holes 301 are evenly distributed on the side wall in the circumferential direction for air to enter; preferably, the air inlet holes 301 are provided at the bottom of the side wall. The space between the inner chamber cover 3 and the flame condensing cover 5 is an inner chamber, and the cavity formed by the inner chamber can be used for the flame to burn.

[0039] An outer cover 8 is provided on the inner chamber cover 3, and the outer cover 8 covers the outer side of the inner chamber cover 3, and the top of the inner side of the outer cover 8 contacts and is fixed to the top of the outer side of the inner chamber cover 3, preferably by welding. A circular opening is provided above the outer cover 8, and the size of the opening is the same as that of the opening above the inner chamber cover 3, both of which have a diameter of 20-30 mm, preferably 25 mm.

[0040] The inner diameter of the outer cover 8 is larger than the outer diameter of the inner chamber cover 3. The bottom of the outer cover 8 is provided with a trumpet-shaped structure extending outward, and a convex edge extends outward at the opening of the trumpet. When the combustion chamber is installed in the parking heater, the convex edge can also play a role in limiting and fixing.

[0041] When the outer cover 8 is installed on the inner chamber cover 3, an air inlet will be formed between the bottom of the outer cover 8 and the bottom of the inner chamber cover 3, and an air channel for air to pass through will be formed between the inner wall of the outer cover 8 and the outer wall of the inner chamber cover 3, so that air can enter from the air inlet, flow through the air channel and enter from the air inlet hole 301 for flame combustion.

[0042] The outer chamber cover 4 is a cylindrical structure, which is fixed on the top of the outer cover 8, preferably connected by welding. The top of the outer chamber cover 4 is also provided with a circular opening, whose diameter is 20-30 mm, preferably 25 mm. The space inside the outer chamber cover 4 is the outer chamber, and the air enters the outer chamber cover 4 through the opening at the top, so that the flame can burn fully and reach the highest temperature in the outer chamber.

[0043] The utility model allows air to enter through the passage between the outer cover 8 and the inner chamber cover 3, and also allows air to enter through the opening of the outer chamber cover 4, so that sufficient air can enter the combustion chamber, so that the flame can burn fully. In addition, the sintered felt 2 can atomize the fuel, and the atomized fuel particles are smaller and more evenly distributed, which can increase the contact area between the fuel and the air, and mix more fully with the air, which helps to improve the combustion efficiency, and make the fuel burn more completely, reduce the generation of incomplete combustion products, and reduce pollutant emissions.

[0044] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A combustion chamber for a parking heater, characterized in that: It includes an oil inlet pipe, a sintered felt, an inner chamber cover, an outer chamber cover, a flame collecting cover and an outer cover; the oil pipe, the sintered felt, the inner chamber cover and the flame collecting cover are all installed on the base of the combustion chamber, and the base is a cylindrical structure with an opening on the top; The oil inlet pipe is arranged at the bottom of the combustion chamber, and the sintered felt is fixed to the upper surface of the base through a sintered felt pressing plate; the liquid outlet of the oil inlet pipe is connected to the opening at the bottom center of the base, and the liquid inlet of the oil inlet pipe is connected to the fuel pump; The inner chamber cover and the flame collecting cover are both arranged above the side wall of the base; the flame collecting cover is arranged on the inner side of the inner chamber cover; the flame collecting cover is a trumpet-shaped structure, the circular opening below it is the same size as the opening above the base, and the circular opening above it is smaller than the opening below; The inner chamber cover is a cylindrical structure, and the lower opening thereof is a trumpet-shaped structure; a circular opening is arranged above the inner chamber cover, and a plurality of air inlet holes are arranged on the side wall of the inner chamber cover; An outer cover is arranged on the inner chamber cover, and the top of the inner side of the outer cover is fixed to the top of the outer side of the inner chamber cover; a circular opening is arranged above the outer cover, and the opening is the same as the opening above the inner chamber cover, and both have a diameter of 20-30mm; an air inlet is provided between the bottom of the outer cover and the bottom of the inner chamber cover, and an air channel is provided between the inner wall of the outer cover and the outer wall of the inner chamber cover; the outer chamber cover is a cylindrical structure, which is fixed above the outer cover, and a circular opening is provided on the top of the outer chamber cover, and the diameter of the circular opening is 20-30mm.

2. The combustion chamber for a parking heater according to claim 1, characterized in that The side of the base is also provided with an opening for installing an igniter.

3. The combustion chamber for a parking heater according to claim 1, characterized in that: The sintered felt pressing plate is a circular ring-shaped structure, and the edge of the sintered felt is fixed on the base.

4. The combustion chamber for a parking heater according to claim 1, characterized in that The diameter of the oil inlet pipe is 4-6 mm.

5. The combustion chamber for a parking heater according to claim 1, characterized in that: The sintered felt is a metal woven mesh.

6. The combustion chamber for a parking heater according to claim 1, characterized in that The bottom opening of the base is also provided with a nozzle.

7. The combustion chamber for a parking heater according to claim 1, characterized in that: A protrusion is extended outwardly from the top of the side wall of the base, and the flame gathering cover and the inner chamber cover are both fixed on the protrusion.

8. The combustion chamber for a parking heater according to claim 1, characterized in that The air inlet hole is arranged at the bottom of the side wall.

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