Gas heater

Abstract

The present invention discloses a gas heater, a shell body is provided with a combustion zone, a heat exchange zone, an air intake pipeline, an air intake pipeline, a hot air exhaust pipeline and a waste gas exhaust pipeline, the air intake inlet of the air intake pipeline, the air intake port of the air intake pipeline, the hot air exhaust port of the hot air exhaust pipeline and the waste gas exhaust port of the waste gas exhaust pipeline respectively extend to the outer wall of the shell body; an air duct and a waste gas duct for mutual heat exchange are provided in the heat exchange zone, and an air duct inlet and an air duct outlet of the connecting air duct, and a waste gas inlet and a waste gas outlet of the connecting waste gas duct are respectively provided on the heat exchange zone; the air duct inlet and the air duct outlet of the heat exchange zone are respectively connected to the air intake pipeline and the hot air exhaust pipeline, and the waste gas inlet and the waste gas outlet of the heat exchange zone are respectively connected to the combustion zone and the waste gas exhaust pipeline; the air intake pipeline also includes a gas air inlet and a mixing outlet, and the gas air inlet and the mixing outlet are respectively connected to the air intake pipeline and the combustion zone; this gas heater is suitable for indoor use, is safe to use and has a good heating effect.

Description

Technical Field

[0001] The present invention relates to the technical field of heaters, and in particular to a gas heater. Background Art

[0002] As people's living standards continue to improve, people's demand for a comfortable living environment is increasing. The weather is cold in winter, especially in northern my country. Winter heating has become an indispensable life need for people, so various types of heaters have emerged.

[0003] Currently, heaters are generally divided into electric and gas types; electric heaters consume a lot of electricity, have low thermal efficiency and poor economy; gas heaters are placed indoors (in a room or a car) and combustion will produce toxic and harmful substances, which are very harmful to the human body and even life-threatening, and have poor safety; therefore, they are generally only used outdoors. When they are barely used indoors, windows must be opened regularly for ventilation, resulting in heat waste and inconvenience in use. Summary of the invention

[0004] The purpose of the present invention is to provide a gas heater which is suitable for indoor use, safe to use and has good heating effect.

[0005] The object of the present invention is achieved in that:

[0006] A gas heater, comprising a shell, a combustion zone is arranged on the shell, and the shell is also provided with a heat exchange zone, an air intake pipeline, an air intake pipeline, a hot air exhaust pipeline and an exhaust gas exhaust pipeline, wherein the air intake inlet of the air intake pipeline, the air intake of the air intake pipeline, the hot air exhaust outlet of the hot air exhaust pipeline and the exhaust gas exhaust outlet of the exhaust gas exhaust pipeline extend to the outer side wall of the shell respectively;

[0007] The heat exchange zone is provided with an air duct and an exhaust duct for mutual heat exchange, and the heat exchange zone is also provided with an air duct inlet and an air duct outlet connected to the air duct, and an exhaust gas inlet and an exhaust gas outlet connected to the exhaust gas duct; the air duct inlet and the air duct outlet of the heat exchange zone are respectively connected to the air inlet pipeline and the hot air exhaust pipeline, and the exhaust gas inlet and the exhaust gas outlet of the heat exchange zone are respectively connected to the combustion zone and the exhaust gas exhaust pipeline;

[0008] The air intake pipeline further comprises a gas air inlet and a mixing outlet, and the gas air inlet and the mixing outlet are respectively connected to the air intake pipeline and the combustion zone.

[0009] For this gas heater, external air enters the air inlet pipe through the air inlet and is divided into two paths. One path enters the air inlet pipe through the gas air inlet, and the air is mixed with gas in the rear section of the air inlet pipe before entering the combustion zone for combustion. The generated high-temperature exhaust gas (i.e., heat and exhaust gas) enters the heat exchange zone, and the other path of air directly enters the heat exchange zone, and after heat exchange (rapidly absorbing the heat of the high-temperature exhaust gas) in the heat exchange zone, it becomes hot air (i.e., hot air), and the hot air is finally discharged to the heating interval through the hot air exhaust pipe, and the high-temperature exhaust gas is finally discharged through the exhaust gas outlet after cooling (an external exhaust gas receiving interval can be connected). Since the hot air exhaust pipe and the exhaust gas exhaust pipe work independently and do not interfere with each other, harmful exhaust gas and harmless hot air are discharged to their respective different intervals. In particular, the harmless hot air can be used by users for heating, ensuring that the heater is suitable for indoor heating (in a room or car), safe to use, and has good heating effect.

[0010] The purpose of the present invention can also be solved by the following technical measures:

[0011] Specifically, the air inlet is connected to an air inlet valve, and a bottle supporting surface for placing the gas bottle is provided on the outer wall of the shell near the air inlet valve. The air inlet valve is convenient for connecting the external gas bottle and ensures that the gas is not easily leaked from the air inlet valve after entering the heater. In addition, the air inlet valve is also convenient for users to adjust the gas flow rate, thereby adjusting the heating effect, and the bottle supporting surface is conducive to the gas bottle being stably placed on the outer wall of the shell.

[0012] Specifically, the heat exchange zone includes a heat exchange chamber and a heat exchanger disposed inside the heat exchange chamber, the heat exchange chamber constitutes the air duct, the open openings at both ends of the heat exchange chamber respectively constitute the air duct inlet and the air duct outlet, and the heat exchanger is made of a benign thermal conductive material and is provided with the exhaust duct; on the one hand, the open openings at both ends of the heat exchange chamber are conducive to the air inlet pipe to fully enter the heat exchange chamber for heat exchange, and on the other hand, the heat exchanger made of a benign thermal conductive material is conducive to fully and quickly absorbing the heat of the high-temperature exhaust gas generated in the combustion zone, thereby significantly improving the heat exchange efficiency.

[0013] Specifically, the heat exchanger is a metal heat exchanger, and a plurality of independent and parallel vertical exhaust ducts are arranged on the metal diffuser. The upper and lower end openings of each vertical exhaust duct constitute an exhaust gas inlet and an exhaust gas outlet. A plurality of small holes are respectively opened on the corresponding side walls of the combustion zone and the exhaust gas exhaust pipe, and the exhaust gas inlet and the exhaust gas outlet are respectively connected to the corresponding small holes; so that the heat and exhaust gas generated in the combustion zone can enter the exhaust duct through the small holes in the combustion zone and the exhaust gas inlet, and it is also convenient for the exhaust gas to finally enter the exhaust gas exhaust pipe through the small holes and the exhaust gas outlet of the exhaust gas exhaust pipe; in addition, the metal heat exchanger generally has good thermal conductivity, and the molding effect is good and it is convenient to place, and a plurality of independent and parallel vertical exhaust ducts can significantly increase the heat exchange area and improve the heat exchange efficiency.

[0014] Specifically, the outer side of the exhaust duct of the heat exchanger is further provided with upper and lower multi-layer heat exchange fins, and each heat exchange fin and the exhaust duct are integrally formed. This integrally formed structure is more conducive to improving the heat exchange efficiency. At the same time, the multi-layer heat exchange fins on the outer side of the exhaust duct not only guide the air (i.e., cold air) entering the air duct, but also significantly increase the heat exchange area, which can further improve the heat exchange efficiency.

[0015] Specifically, the hot air exhaust pipeline extends around part of the combustion zone, and there is mutual heat exchange between the combustion zone and the hot air exhaust pipeline. This design of the hot air exhaust pipeline around the combustion zone allows the hot air passing through the hot air exhaust pipeline to further exchange heat in the hot air exhaust pipeline, that is, it is equivalent to a second heat exchange, so that the temperature of the hot air passing through the hot air exhaust pipeline is higher and the heating effect is better.

[0016] Specifically, the air inlet duct and the hot air exhaust duct are arranged on both sides of the shell so that the air inlet duct and the hot air exhaust duct can work independently and stably without interfering with each other; the hot air exhaust duct and the combustion zone are adjacent to each other, which is conducive to heat exchange between the hot air exhaust duct and the combustion zone.

[0017] Specifically, the area of ​​the exhaust gas outlet is smaller than that of the air inlet; the larger area of ​​the air inlet is conducive to the rapid entry of external air into the air inlet duct, and the smaller area of ​​the exhaust gas outlet makes the high-temperature exhaust gas discharge slower, so that the high-temperature exhaust gas generated by combustion has a longer heat exchange time in the heat exchange area, thereby improving the heat exchange efficiency and heat exchange effect, so as to avoid the heat of the high-temperature exhaust gas being discharged before timely heat exchange, causing heat loss.

[0018] Specifically, a fan is installed on the air inlet duct; by installing the fan on the air inlet duct, external air is continuously sucked into the air inlet duct, ensuring that the heater can work continuously and stably. Moreover, the fan is installed on the air inlet duct, which is very convenient for installation, disassembly and maintenance of the fan.

[0019] Specifically, a combustion head is installed on the combustion zone; the combustion head realizes the full combustion of the mixture of gas and air in the combustion zone, ensuring that the combustion zone can stably generate and output heat.

[0020] The beneficial effects of the present invention are as follows:

[0021] (1) For this type of gas heater, the external air enters the air inlet pipe through the air inlet and is divided into two paths. One path enters the air inlet pipe through the gas air inlet. After the air is mixed with the gas in the rear section of the air inlet pipe, it enters the combustion zone and burns. The high-temperature exhaust gas (i.e., heat and exhaust gas) generated enters the heat exchange zone. The other path of air directly enters the heat exchange zone and becomes hot air (i.e., hot air) after heat exchange (rapidly absorbing the heat of the high-temperature exhaust gas) in the heat exchange zone. The hot air is finally discharged to the heating zone through the hot air exhaust pipe, and the high-temperature exhaust gas is finally discharged through the exhaust outlet after cooling (which can be connected to an external exhaust gas receiving zone). Since the hot air exhaust pipe and the exhaust gas exhaust pipe work independently and do not interfere with each other, harmful exhaust gas and harmless hot air are discharged to their respective different zones. In particular, the harmless hot air can be used by users for heating, ensuring that the heater is suitable for indoor heating (in a room or car), safe to use, and has a good heating effect.

[0022] (2) The structure of this heat exchange zone, on the one hand, the open openings at both ends of the heat exchange chamber are conducive to the air from the air inlet pipe to fully enter the heat exchange chamber for heat exchange; on the other hand, the heat exchanger made of good thermal conductive material is conducive to fully and quickly absorbing the heat of the high-temperature exhaust gas generated in the combustion zone, significantly improving the heat exchange efficiency.

[0023] (3) The one-piece structure of the heat exchange fins and the exhaust duct is more conducive to improving the heat exchange efficiency. At the same time, the multi-layer heat exchange fins on the outside of the exhaust duct not only guide the air (i.e., cold air) entering the air duct, but also significantly increase the heat exchange area, which can further improve the heat exchange efficiency.

[0024] (4) This design of the hot air exhaust pipe surrounding the combustion zone allows the hot air passing through the hot air exhaust pipe to further undergo heat exchange in the hot air exhaust pipe, which is equivalent to a second heat exchange, so that the hot air passing through the hot air exhaust pipe has a higher temperature and a better heating effect.

[0025] (5) The larger area of ​​the air inlet is conducive to the rapid entry of external air into the air inlet duct, and the smaller area of ​​the exhaust gas outlet makes the high-temperature exhaust gas discharge slower, so that the high-temperature exhaust gas generated by combustion has a longer heat exchange time in the heat exchange area, improving the heat exchange efficiency and heat exchange effect, so as to avoid the heat of the high-temperature exhaust gas being discharged before the heat exchange is timely, causing heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of a gas heater of the present invention.

[0027] Figure 2 yes Figure 1 Schematic diagram from another angle.

[0028] Figure 3 It is a cross-sectional view of a gas heater of the present invention.

[0029] Figure 4 yes Figure 3 Schematic diagram after removing the heat exchanger.

[0030] Figure 5 It is a cross-sectional view of the gas heater of the present invention in the main viewing direction.

[0031] Figure 6 It is a three-dimensional enlarged view of the heat exchanger of the present invention.

[0032] Figure 7 It is a schematic diagram of a gas heater with a mounting housing according to the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0034] Example, combined with Figures 1 to 7 As shown, a gas heater comprises a shell 1, a combustion zone 2 is arranged on the shell 1, a combustion head 20 is installed on the combustion zone 2, and the shell 1 is also provided with a heat exchange zone 3, an air intake pipeline 4, an air intake pipeline 5, a hot air exhaust pipeline 6 and an exhaust gas exhaust pipeline 7. Figure 5 As shown, a fan 10 is installed on the air inlet pipeline 5, and the air inlet 41 of the air inlet pipeline 4, the air inlet 51 of the air inlet pipeline 5, the hot air outlet 61 of the hot air outlet pipeline 6 and the exhaust outlet 71 of the exhaust air outlet pipeline 7 extend to the outer side wall of the housing 1 respectively;

[0035] The heat exchange zone 3 is provided with an air duct 31 and an exhaust duct 32 for mutual heat exchange. The heat exchange zone 3 is also provided with an air duct inlet 33 and an air duct outlet 34 connected to the air duct 31, and an exhaust gas inlet 35 and an exhaust gas outlet 36 connected to the exhaust gas duct 32; the air duct inlet 33 and the air duct outlet 34 of the heat exchange zone 3 are respectively connected to the air inlet pipeline 5 and the hot air exhaust pipeline 6, and the exhaust gas inlet 35 and the exhaust gas outlet 36 of the heat exchange zone 3 are respectively connected to the combustion zone 2 and the exhaust gas exhaust pipeline 7;

[0036] The air intake pipeline 4 further includes a gas air intake port 42 and a mixing outlet 43 , and the gas air intake port 42 and the mixing outlet 43 are connected to the air intake pipeline 5 and the combustion zone 2 respectively.

[0037] As a more specific solution, the air inlet 41 is connected to the air inlet valve 8, and a bottle supporting surface 11 for placing the gas bottle 40 is also provided on the outer wall of the shell 1 near the air inlet valve; of course, the user can also choose other gas sources (such as: external gas pipelines) according to actual needs, and the gas bottle 40 is not limited here.

[0038] As a more specific solution, the heat exchange zone 3 includes a heat exchange chamber and a heat exchanger 9 disposed inside the heat exchange chamber, the heat exchange chamber constitutes the air duct 31, and the open openings at both ends of the heat exchange chamber respectively constitute an air duct inlet 33 and an air duct outlet 34, the heat exchanger 9 is made of a benign thermal conductive material and is provided with the exhaust duct 32.

[0039] In this embodiment, the heat exchanger 9 is a metal heat exchanger, which is provided with a plurality of independent and parallel vertical exhaust ducts 32. The upper and lower openings of each vertical exhaust duct 32 constitute an exhaust gas inlet 35 and an exhaust gas outlet 36. A number of small holes 50 are respectively opened on the corresponding side walls of the combustion zone 2 and the exhaust gas exhaust pipeline 7, and the exhaust gas inlet 35 and the exhaust gas outlet 36 are respectively connected to the corresponding small holes 50; the outer side of the exhaust duct 32 of the heat exchanger 9 is also provided with upper and lower multi-layer heat exchange fins 91, and each heat exchange fin 91 and the exhaust duct 32 are integrally formed.

[0040] In order to further improve the heating effect, the hot air exhaust pipe 6 extends around part of the combustion zone 2, and there is mutual heat exchange between the combustion zone 2 and the hot air exhaust pipe 6. The design of the hot air exhaust pipe 6 around the combustion zone 2 allows the hot air passing through the hot air exhaust pipe 6 to further exchange heat on the hot air exhaust pipe 6, that is, it is equivalent to a second heat exchange, so that the temperature of the hot air passing through the hot air exhaust pipe 6 is higher and the heating effect is better.

[0041] As a more preferred embodiment, the air inlet pipeline 5 and the hot air exhaust pipeline 6 are arranged on both sides of the shell 1, the hot air exhaust pipeline 6 and the combustion zone 2 are adjacent to each other, and the area of ​​the exhaust gas outlet 71 is smaller than the area of ​​the air inlet 51.

[0042] In this implementation, see Figure 7 As shown, a mounting shell 30 is also included, and the gas heater is placed in the mounting shell 30 to ensure that the gas heater is not affected by the outside and works stably.

[0043] Working principle: see Figure 5As shown, the external air 100 enters the air inlet pipe 5 through the air inlet 51 and is divided into two paths. One path enters the air inlet pipe 4 through the gas air inlet 42. After the air 100 is mixed with the gas 200 in the rear section of the air inlet pipe 4, it enters the combustion zone 2 for combustion. The generated high-temperature exhaust gas 300 (i.e., heat and exhaust gas) enters the heat exchange zone 3. The other path of air 100 directly enters the heat exchange zone 3. After heat exchange in the heat exchange zone 3 (rapidly absorbing the heat of the high-temperature exhaust gas 300), it becomes hot air 400 (i.e., hot air). The hot air 4 00 is finally discharged to the heating area through the hot air discharge pipe 6, and the high-temperature exhaust gas 300 is finally discharged through the exhaust gas outlet 71 after cooling (which can be externally connected to the exhaust gas receiving area). Since the hot air discharge pipe 6 and the exhaust gas discharge pipe 7 work independently and do not interfere with each other, the harmful exhaust gas and the harmless hot air 400 are respectively discharged to their own different areas. In particular, the harmless hot air 400 can be used for heating by users, ensuring that the heater is suitable for indoor heating (in a room or in a car), safe to use, and has a good heating effect.

[0044] The gas heater of the present invention can be used indoors or in temporary tents built outdoors, and can even be used in electric vehicles, and its application range is very wide. Taking electric vehicles as an example, due to the limitation of the power storage capacity of electric vehicles, in winter, if electric vehicles (such as taxi electric vehicles) use the car's own power supply for heating, their power consumption is very large, which significantly reduces the driving mileage of the electric vehicle on a single charge. Therefore, electric vehicles are rarely used as taxis; if electric vehicles use the gas heater of the present invention, their hot air outlet 61 is connected to the car compartment (inside the car), and the exhaust gas outlet 71 can be extended outside the car through the "trachea", so that the electric vehicle does not need to use the car's own power supply and can also enjoy heating in the car compartment.

Claims

1. A gas heater, comprising a housing (1), wherein a combustion zone (2) is provided on the housing (1), wherein: The shell (1) is further provided with a heat exchange area (3), an air intake pipeline (4), an air intake pipeline (5), a hot air exhaust pipeline (6) and an exhaust gas exhaust pipeline (7); the air intake inlet (41) of the air intake pipeline (4), the air intake port (51) of the air intake pipeline (5), the hot air exhaust port (61) of the hot air exhaust pipeline (6) and the exhaust gas exhaust port (71) of the exhaust gas exhaust pipeline (7) respectively extend to the outer wall of the shell (1); An air duct (31) and an exhaust duct (32) for heat exchange with each other are arranged in the heat exchange zone (3); an air duct inlet (33) and an air duct outlet (34) connected to the air duct (31), and an exhaust gas inlet (35) and an exhaust gas outlet (36) connected to the exhaust gas duct (32) are also arranged on the heat exchange zone (3); the air duct inlet (33) and the air duct outlet (34) of the heat exchange zone (3) are connected to an air inlet pipeline (5) and a hot air exhaust pipeline (6), respectively; and the exhaust gas inlet (35) and the exhaust gas outlet (36) of the heat exchange zone (3) are connected to the combustion zone (2) and the exhaust gas exhaust pipeline (7), respectively. The air intake pipeline (4) further comprises a gas air intake port (42) and a mixing outlet (43), wherein the gas air intake port (42) and the mixing outlet (43) are respectively connected to the air intake pipeline (5) and the combustion zone (2); The hot air exhaust pipeline (6) extends around a portion of the combustion zone (2), and heat exchange is performed between the combustion zone (2) and the hot air exhaust pipeline (6); A combustion head (20) is installed on the combustion zone (2).

2. The gas heater according to claim 1, characterized in that: The air inlet (41) is connected to an air inlet valve (8), and a bottle receiving surface (11) for placing a gas bottle (40) is also provided on the outer side wall of the housing (1) near the air inlet valve (8).

3. The gas heater according to claim 1, characterized in that: The heat exchange zone (3) comprises a heat exchange chamber and a heat exchanger (9) disposed inside the heat exchange chamber, the heat exchange chamber constituting the air duct (31), the open openings at both ends of the heat exchange chamber constituting the air duct inlet (33) and the air duct outlet (34), respectively, the heat exchanger (9) being made of a good heat conductive material and being provided with the exhaust duct (32).

4. The gas heater according to claim 3, characterized in that: The heat exchanger (9) is a metal heat exchanger, and is provided with a plurality of independent and mutually parallel vertical exhaust ducts (32), the upper and lower ends of each vertical exhaust duct (32) forming an exhaust gas inlet (35) and an exhaust gas outlet (36), and the corresponding side walls of the combustion zone (2) and the exhaust gas discharge pipeline (7) are respectively provided with a plurality of small holes (50), and the exhaust gas inlet (35) and the exhaust gas outlet (36) are respectively connected to the corresponding small holes (50).

5. The gas heater according to claim 3 or 4, characterized in that: The exhaust duct (32) of the heat exchanger (9) is further provided with upper and lower layers of heat exchange fins (91) on the outside thereof, and each heat exchange fin (91) and the exhaust duct (32) are integrally formed.

6. The gas heater according to claim 1, characterized in that: The air inlet pipeline (5) and the hot air exhaust pipeline (6) are arranged on both sides of the shell (1), and the hot air exhaust pipeline (6) and the combustion zone (2) are adjacent to each other.

7. The gas heater according to claim 1, characterized in that: The area of ​​the exhaust gas outlet (71) is smaller than the area of ​​the air inlet (51).

8. The gas heater according to claim 1, characterized in that: A fan (10) is installed on the air inlet pipeline (5).

Images