Patent Description:
At present, heating apparatuses mainly include an electric load heating apparatus and a fuel heating apparatus. The fuel heating apparatus includes a gas heating apparatus and a fuel oil heating apparatus. The fuel oil heating apparatus mainly uses kerosene or diesel as fuel, and a structure of the fuel oil heating apparatus includes a fuel tank filled with the kerosene or the diesel, an atomizer, a spray nozzle, a combustion chamber, and a fan. Fuel oil is delivered to the atomizer for atomization through an oil pipeline, and then the generated oil gas is sprayed into the combustion chamber at a high speed from a spray orifice through the spray nozzle. In this case, the fan is operated, and air is blown in from the spray orifice, so that the air is pre-mixed with the oil gas in the spray orifice, and then enters the combustion chamber and is ignited and combusted by an ignition needle. However, in the prior art, when the air is mixed with the oil gas by means of the fan, an air speed and the oil gas of the fuel oil heating apparatus are in a relatively constant and rapid mixing state, and a pre-mixing effect is poor. In this way, when the air and the oil gas enter the combustion chamber for combustion, hot gas is rapidly discharged. In this way, the oil gas is insufficiently combusted, resulting in relatively low combustion efficiency, increase in oil consumption, and poor heating effect. In addition, the fuel heating apparatus in the prior art is generally large in volume and is started to work with a mains supply. Therefore, the fuel heating apparatus is mostly used indoors, and is inconvenient to use in an outdoor environment without a power supply.

Document <CIT> shows an outdoor camping fuel oil heating apparatus according to the preamble of claim <NUM>. <CIT> and <CIT> disclose other outdoor camping fuel oil heating apparatuses.

A purpose of the present invention is to provide an outdoor camping fuel oil heating apparatus, in which combustion time of a flame in a combustion cylinder is controlled reasonably, combustion efficiency is effectively improved, and indoor and outdoor power connections are facilitated.

In order to solve the above technical problem, the present invention is solved by the following technical solution: an outdoor camping fuel oil heating apparatus, comprising an oil tank, where the oil tank is provided with a cylindrical structure, the cylindrical structure comprises a housing, a combustion cylinder is disposed in the housing, a rear end of the combustion cylinder is connected with a combustion head assembly, a front end of the combustion cylinder is provided with a hot air outlet, an air supply assembly is disposed at the rear in the housing corresponding to the combustion head assembly, a control assembly is disposed at one side of the oil tank, the combustion head assembly comprises a fixed tray, an outer edge of the fixed tray is connected with a flame-stabilizing tray, an oil spray nozzle and an ignition needle connected to a middle part of the fixed tray are disposed in the flame-stabilizing tray, and a power storage assembly electrically connected to the control assembly is further disposed on the housing, where several fire retaining rings are uniformly disposed in the combustion cylinder, apertures of the several fire retaining rings are disposed from large to small from the combustion head assembly to a tail part of the combustion cylinder, and a plurality of combustion through holes distributed in a regular or irregular manner are formed in the several fire retaining rings.

Preferably, a horn sleeve extending into the combustion cylinder is connected in the middle of the fixed tray, an end of the horn sleeve disposed in the combustion cylinder is covered with an air guide cover in a coordination manner, a middle part of the other end of the horn sleeve is provided with an air guide sheet, and the air guide sheet is located in the flame-stabilizing tray.

Further preferably, the air guide cover comprises a cover body connected to the fixed tray, a conical air guide sleeve is disposed at an inner end of the cover body, a middle air guide through hole is formed at a top end of the conical air guide sleeve, and several lateral air guide through holes are uniformly formed in the conical air guide sleeve.

Further preferably, a plurality of combustion through holes distributed in a regular or irregular manner are formed in the fixed tray, the horn sleeve and the air guide sheet, respectively.

Further preferably, an outer end of the flame-stabilizing tray is connected with a volute, one side of the volute is provided with a volute motor, an air inlet is formed in the other side of the volute, the air inlet is correspondingly connected with an air inlet fixing plate formed with an air inlet hole, an air inlet regulating baffle is movably disposed in the air inlet fixing plate, and an air inlet regulating rod is connected to a side surface of the air inlet regulating baffle.

Further preferably, one side of the flame-stabilizing tray is connected with an electromagnetic pump through a pump support bracket in a coordination manner, an input end of the electromagnetic pump is connected to the oil tank through an oil suction pipe, and an output end of the electromagnetic pump is connected to the flame-stabilizing tray through the oil suction pipe and a straight joint.

Further preferably, the air supply assembly comprises a cold air motor disposed at a rear part of the housing, an output end of the cold air motor is connected with a fan blade, and a rear end of the housing is provided with a rear mesh cover.

Further preferably, the oil tank and the housing are connected through a connecting frame, the housing is disposed at an upper end of the connecting frame, both sides of the connecting frame are provided with side plates, the control assembly is connected to one of the side plates, and the air inlet regulating rod extends out of the other side plate.

Further preferably, the cylindrical structure further comprises a heat insulation cylinder sleeved outside the combustion cylinder, the housing comprises a lower shield, an upper end of the lower shield is connected with a front upper shield disposed corresponding to the heat insulation cylinder and a rear upper shield disposed corresponding to the combustion head assembly to the air supply assembly, the rear upper shield is provided with a handle, and a front end between the front upper shield and the lower shield is connected with a mask assembly.

Further preferably, the power storage assembly comprises a storage battery and/or a solar panel disposed on the front upper shield or the rear upper shield.

The beneficial effects of the present invention are that an oil tank is comprised, where the oil tank is provided with a cylindrical structure, the cylindrical structure comprises a housing, a combustion cylinder is disposed in the housing, a rear end of the combustion cylinder is connected with a combustion head assembly, a front end of the combustion cylinder is provided with a hot air outlet, an air supply assembly is disposed at the rear in the housing corresponding to the combustion head assembly, a control assembly is disposed at one side of the oil tank, the combustion head assembly comprises a fixed tray, an outer edge of the fixed tray is connected with a flame-stabilizing tray, an oil spray nozzle and an ignition needle connected to a middle part of the fixed tray are disposed in the flame-stabilizing tray, and a power storage assembly electrically connected to the control assembly is further disposed on the housing, several fire retaining rings are uniformly disposed in the combustion cylinder, apertures of the several fire retaining rings are disposed from large to small from the combustion head assembly to a tail part of the combustion cylinder, and a plurality of combustion through holes distributed in a regular or irregular manner are formed in the several fire retaining rings. As different apertures from large to small are successively formed in each fire retaining ring, and at the same time, a plurality of combustion through holes distributed in a regular or irregular manner are further formed in the fire retaining rings of the front two layers, a purpose of improving the combustion efficiency is finally achieved by blocking a residence time of a flame at each fire retaining ring during combustion. In addition, the control assembly is supplied with power through an energy storage assembly, so as to facilitate indoor and outdoor power connection.

The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

Embodiment <NUM>: as shown in <FIG>, an outdoor camping fuel oil heating apparatus comprises an oil tank <NUM>, where the oil tank <NUM> is provided with a cylindrical structure, the cylindrical structure comprises a housing, a combustion cylinder <NUM> is disposed in the housing, a rear end of the combustion cylinder <NUM> is connected with a combustion head assembly, a front end of the combustion cylinder <NUM> is provided with a hot air outlet, an air supply assembly is disposed at the rear in the housing corresponding to the combustion head assembly, a control assembly is disposed at one side of the oil tank <NUM>, the combustion head assembly comprises a fixed tray <NUM>, an outer edge of the fixed tray <NUM> is connected with a flame-stabilizing tray <NUM>, an oil spray nozzle and an ignition needle connected to a middle part of the fixed tray <NUM> are disposed in the flame-stabilizing tray <NUM>, and a power storage assembly electrically connected to the control assembly is further disposed on the housing, several fire retaining rings <NUM> are uniformly disposed in the combustion cylinder <NUM>, apertures of the several fire retaining rings <NUM> are disposed from large to small from the combustion head assembly to a tail part of the combustion cylinder <NUM>, and a plurality of combustion through holes <NUM> distributed in a regular or irregular manner are formed in the several fire retaining rings <NUM>. As different apertures from large to small are successively formed in each fire retaining ring <NUM>, and at the same time, a plurality of combustion through holes <NUM> distributed in a regular or irregular manner are further formed in the fire retaining rings <NUM> of the front two layers, a purpose of improving the combustion efficiency is finally achieved by blocking a residence time (<NUM> to <NUM>) of a flame at each fire retaining ring <NUM> during combustion. In addition, the control assembly is supplied with power through an energy storage assembly, thereby facilitating indoor and outdoor power connection.

In this embodiment, one side of the flame-stabilizing tray <NUM> is connected with an electromagnetic pump <NUM> through a pump support bracket in a coordination manner, an input end of the electromagnetic pump <NUM> is connected to the oil tank <NUM> through an oil suction pipe <NUM>, and an output end of the electromagnetic pump <NUM> is connected to the flame-stabilizing tray <NUM> through the oil suction pipe <NUM> and a straight joint <NUM>. By selecting the electromagnetic pump <NUM> that can be adapted to conventional or various corrosive oil, it is convenient to adapt to various oil sources such as fuel oil and gas.

In this embodiment, the air supply assembly comprises a cold air motor <NUM> disposed at a rear part of the housing, an output end of the cold air motor <NUM> is connected to a fan blade <NUM>, a rear end of the housing is provided with a rear mesh cover <NUM>, and the cold air motor <NUM> and the fan blade <NUM> form an axial flow fan, so that oxygen supply is large, and an air supply distance can be increased by connecting an external air duct.

In this embodiment, the oil tank <NUM> and the housing are connected through a connecting frame, the housing is disposed at an upper end of the connecting frame, both sides of the connecting frame are provided with side plates <NUM>, the control assembly is connected to one of the side plates <NUM>, the air inlet regulating rod <NUM> extends out of the other side plate <NUM>, the cylindrical structure further comprises a heat insulation cylinder <NUM> sleeved outside the combustion cylinder <NUM>, the housing comprises a lower shield <NUM>, an upper end of the lower shield <NUM> is connected with a front upper shield <NUM> disposed corresponding to the heat insulation cylinder <NUM> and a rear upper shield <NUM> disposed corresponding to the combustion head assembly to the air supply assembly, the rear upper shield <NUM> is provided with a handle <NUM>, and a front end between the front upper shield <NUM> and the lower shield <NUM> is connected with a mask assembly <NUM>, thus achieving a reasonably-disposed structure and convenient loading and unloading.

In this embodiment, the power storage assembly comprises a storage battery and/or a solar panel disposed on the front upper shield <NUM> or the rear upper shield <NUM>. Electric energy can be stored in the storage battery through the solar panel, and the storage battery supplies power to the control assembly, thereby facilitating the indoor or outdoor use of the fuel oil heating apparatus in this embodiment.

Embodiment <NUM>: as shown in <FIG> and <FIG>, a difference between this embodiment and Embodiment <NUM> is that a horn sleeve <NUM> extending into the combustion cylinder <NUM> is connected in the middle of the fixed tray <NUM>, an end of the horn sleeve <NUM> disposed in the combustion cylinder <NUM> is covered with an air guide cover <NUM> in a coordination manner, a middle part of the other end of the horn sleeve <NUM> is provided with an air guide sheet <NUM>, the air guide sheet <NUM> is located in the flame-stabilizing tray <NUM>, and the air guide cover <NUM> comprises a cover body <NUM> connected to the fixed tray <NUM>, a conical air guide sleeve <NUM> is disposed at an inner end of the cover body <NUM>, a middle air guide through hole <NUM> is formed at a top end of the conical air guide sleeve <NUM>, and several lateral air guide through holes <NUM> are uniformly formed in the conical air guide sleeve <NUM>. During use, hot air is guided into the horn sleeve <NUM> through the air guide sheet <NUM>, and the hot air is concentrated in the horn sleeve <NUM> through the conical air guide sleeve <NUM> of the air guide cover <NUM>, and then the hot air is guided into the fire retaining ring <NUM> through the conical air guide sleeve <NUM> from the lateral air guide through hole <NUM>. In addition, the conical air guide sleeve <NUM> may further return a part of hot air in the combustion cylinder <NUM> into the horn sleeve <NUM> through the air guide sheet <NUM> disposed in a middle part, and then the same is guided into the fire retaining ring <NUM> from the lateral air guide through hole <NUM>, so that the hot air can be temporarily concentrated, thereby serving the purpose of assisting in improving the combustion efficiency. In this way, the whole heating apparatus forms a structure of a combustion engine + a furnace, and a problem that combustion is prone to produce black smoke can be solved.

In this embodiment, a plurality of combustion through holes <NUM> distributed in a regular or irregular manner are formed in the fixed tray <NUM>, the horn sleeve <NUM> and the air guide sheet <NUM>, respectively, and the fixed tray <NUM>, the horn sleeve <NUM> and the combustion through holes <NUM> in the air guide sheet <NUM> can slow down a speed of sending hot air into the combustion cylinder <NUM>.

Embodiment <NUM>: as shown in <FIG> and <FIG>, an outer end of the flame-stabilizing tray <NUM> is connected with a volute <NUM>, one side of the volute <NUM> is provided with a volute motor <NUM>, an air inlet is formed in the other side of the volute <NUM>, the air inlet is correspondingly connected with an air inlet fixing plate <NUM> formed with an air inlet hole, an air inlet regulating baffle <NUM> is movably disposed in the air inlet fixing plate <NUM>, and an air inlet regulating rod <NUM> is connected to a side surface of the air inlet regulating baffle <NUM>. In this embodiment, the volute motor <NUM> is disposed on an outer end of the flame-stabilizing tray <NUM>, and the volute motor <NUM> is a lower-mounted centrifugal fan. In addition, an electric eye is disposed at a top end of the volute <NUM>, and during use, the air inlet regulating rod <NUM> controls the air inlet regulating baffle <NUM> to move, to regulate a size of the air inlet, so as to regulate a size of an air inlet volume. The volute <NUM> and the volute motor <NUM> can be used together with the air guide cover <NUM> and the fire retaining ring <NUM> in a coordination manner.

It should be noted that the improvement of the combustion efficiency is mainly based on the significant improvement of the air outlet temperature on the premise of the same machine, the same power, the same air speed and the same air volume. In addition, during combustion of a current heating apparatus, nitrogen in the air is converted into exhaust gas of a nitrogen oxide after being combusted at a high temperature. Through the foregoing structure, emission of the exhaust gas can also be greatly reduced! (National claimed standard emissions are below <NUM> milligrams per cubic). For detailed parameters, see the following table:.

Claim 1:
An outdoor camping fuel oil heating apparatus, comprising an oil tank (<NUM>), wherein the oil tank (<NUM>) is provided with a cylindrical structure, the cylindrical structure comprises a housing, a combustion cylinder (<NUM>) is disposed in the housing, a rear end of the combustion cylinder (<NUM>) is connected with a combustion head assembly, a front end of the combustion cylinder (<NUM>) is provided with a hot air outlet, an air supply assembly is disposed at the rear in the housing corresponding to the combustion head assembly, a control assembly is disposed at one side of the oil tank (<NUM>), the combustion head assembly comprises a fixed tray (<NUM>), an outer edge of the fixed tray (<NUM>) is connected with a flame-stabilizing tray, an oil spray nozzle and an ignition needle connected to a middle part of the fixed tray (<NUM>) are disposed in the flame-stabilizing tray,
characterized in that a power storage assembly electrically connected to the control assembly is further disposed on the housing,
and in that several fire retaining rings (<NUM>) are uniformly disposed in the combustion cylinder (<NUM>), apertures of the several fire retaining rings (<NUM>) are disposed from large to small from the combustion head assembly to a tail part of the combustion cylinder (<NUM>), a plurality of combustion through holes distributed in a regular or irregular manner are formed in the several fire retaining rings (<NUM>), and the fire retaining rings (<NUM>) and
the combustion through holes block a residence time of a flame during combustion, thereby improving combustion efficiency in the combustion cylinder (<NUM>).