Hot blast stove

Abstract

The utility model discloses a hot blast stove which comprises a first heat exchange barrel. The first heat exchange barrel is provided with a combustion chamber, a heat circulation cavity and a heat exchange cavity surrounding the heat circulation cavity; a heat inlet, an air inlet communicated with the heat circulation cavity and a heat outlet communicated with the combustion chamber are formed in the top of the first heat exchange barrel, and the heat outlet is communicated with the heat exchange cavity through the heat inlet; the heat circulation cavity is provided with a hot air outlet; an air outlet is formed in the side wall of the first heat exchange barrel, and the air outlet end of the heat exchange cavity communicates with the air outlet. The utility model can improve the heat efficiency and improve the heating uniformity of hot air.

Description

Technical Field

[0001] The utility model relates to the technical field of hot air generation, in particular to a hot air stove. Background Art

[0002] At present, tea baking generally uses a hot air furnace and a blower to transport hot air to the tea baking room. In order to transport hot air to different objects, the existing hot air furnace is equipped with multiple air outlets. Due to the unreasonable number and position of the air outlets, the cold air is heated unevenly after entering the hot air furnace, and the hot air discharged from different air outlets has inconsistent temperatures, affecting the baking effect. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a hot air stove to improve the uniformity of air heat exchange.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A hot blast stove comprises a first heat exchange barrel;

[0006] The first heat exchange barrel has a combustion chamber, a heat cycle chamber, and a heat exchange chamber arranged around the heat cycle chamber;

[0007] The top of the first heat exchange barrel is provided with a heat inlet, an air inlet communicating with the heat cycle chamber, and a heat outlet communicating with the combustion chamber, and the heat outlet is communicated with the heat exchange chamber through the heat inlet;

[0008] The heat circulation chamber has a hot air outlet;

[0009] The side wall of the first heat exchange barrel is provided with an air outlet, and the air outlet end of the heat exchange cavity is connected to the air outlet.

[0010] Furthermore, it also includes a second heat exchange barrel;

[0011] The first heat exchange barrel and the second heat exchange barrel are arranged in sequence from top to bottom;

[0012] The second heat exchange barrel has an air inlet cavity, and the air inlet cavity has a cold air inlet and a cold air outlet;

[0013] The cold air inlet is communicated with the air inlet end of the heat circulation chamber through the cold air outlet, and the air outlet end of the heat circulation chamber is communicated with the heat outlet.

[0014] Furthermore, a connector for connecting the heat inlet and the heat outlet is installed on the top of the first heat exchange barrel;

[0015] The connecting piece and the top of the first heat exchange barrel form a connecting channel, and the heat outlet and the heat inlet are located in the connecting channel.

[0016] Furthermore, in the axial direction of the first heat exchange barrel, the projection area of ​​the connecting piece is fan-shaped.

[0017] Furthermore, it also includes an exhaust mechanism, and the heat outlet is connected to the heat inlet through the exhaust mechanism.

[0018] Further, the thermal cycle chamber is provided with at least three;

[0019] All of the heat circulation chambers are arranged in sequence along the circumference of the first heat exchange barrel and are connected in sequence to form a circulation channel, and the heat circulation chamber located at the end of the circulation channel is connected to the hot air outlet.

[0020] Furthermore, a fuel inlet communicating with the inner cavity of the first heat exchange barrel is provided on a side wall of the first heat exchange barrel at one end close to the second heat exchange barrel.

[0021] Furthermore, the heat outlet is centrally arranged on a side of the first heat exchange barrel away from the second heat exchange barrel.

[0022] The beneficial effect of the utility model is that by setting a single heat outlet, a single heat inlet and a single air outlet, the airflow heated by the combustion chamber is introduced into the heat exchange chamber to perform secondary heating on the heat circulation chamber. Since the heat exchange chamber is arranged around the heat circulation chamber, the heat in the heat circulation chamber is more uniform, reducing heat loss. Compared with the prior art, the thermal efficiency is improved, and the cold air can be heated more uniformly. The cold air enters the heat circulation chamber from the air inlet for circulation heating, and then is sent from the air outlet to the external space that needs to be heated, such as a tea baking room, a greenhouse, a shed, etc., to achieve heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the hot air furnace in this utility model is shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the hot air furnace in this utility model is shown in FIG. Figure 2 ;

[0025] Figure 3 for Figure 1 A top view of

[0026] Figure 4 This is a cross-sectional view of the hot air furnace in the utility model Figure 1 ;

[0027] Figure 5 This is a cross-sectional view of the hot air furnace in the utility model Figure 2 ;

[0028] Figure 6 It is a cross-sectional view of the hot blast furnace in the utility model.

[0029] Description of labels:

[0030] 1. First heat exchange barrel; 11. Combustion chamber; 12. Heat circulation chamber; 121. Hot air outlet; 13. Heat exchange chamber; 14. Heat inlet; 15. Air inlet; 16. Heat outlet; 17. Fuel inlet; 18. Air outlet;

[0031] 2. Second heat exchange barrel; 20. Air inlet chamber; 21. Cold air inlet; 22. Cold air outlet;

[0032] 3. Connecting parts; 31. Connecting channel. DETAILED DESCRIPTION

[0033] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0034] Please refer to Figure 1-Figure 6 A hot air furnace comprises a first heat exchange barrel 1; the first heat exchange barrel 1 has a combustion chamber 11, a heat circulation chamber 12 and a heat exchange chamber 13 arranged around the heat circulation chamber 12; a heat inlet 14, an air inlet 15 connected to the heat circulation chamber 12 and a heat outlet 16 connected to the combustion chamber 11 are arranged on the top of the first heat exchange barrel 1, and the heat outlet 16 is connected to the heat exchange chamber 13 through the heat inlet 14; the heat circulation chamber 12 has a hot air outlet 121; an air outlet 18 is arranged on the side wall of the first heat exchange barrel 1, and the air outlet end of the heat exchange chamber 13 is connected to the air outlet 18.

[0035] It can be understood that by providing a single heat outlet 16, a single heat inlet 14 and a single air outlet 18, the airflow heated by the combustion chamber 11 is introduced into the heat exchange chamber to perform secondary heating on the heat circulation chamber 12. Since the heat exchange chamber is arranged around the heat circulation chamber 12, the heat in the heat circulation chamber 12 is more uniform, reducing heat loss. Compared with the prior art, the thermal efficiency is improved, and the cold air can be heated more uniformly. Specifically, the cold air enters the heat circulation chamber 12 from the air inlet 15 for circulation heating, and then is sent from the air outlet 18 to the external space that needs to be heated, such as a tea baking room, a greenhouse, a shed, etc., to achieve heating.

[0036] In some embodiments, a second heat exchange barrel 2 is further included; the first heat exchange barrel 1 and the second heat exchange barrel 2 are arranged in sequence from top to bottom; the second heat exchange barrel 2 has an air inlet chamber 20, and the air inlet chamber 20 has a cold air inlet 21 and a cold air outlet 22; the cold air inlet 21 is connected to the air inlet end of the heat circulation chamber 12 through the cold air outlet 22, and the air outlet end of the heat circulation chamber 12 is connected to the heat outlet 16. Specifically, the outer diameter of the second heat exchange barrel 2 is larger than that of the first heat exchange barrel 1, and a shell is also provided outside the first heat exchange barrel 1, and the shell is provided so that the air flowing out of the cold air outlet 22 absorbs the heat of the heat exchange chamber when passing through the surface of the first heat exchange barrel 1, and then enters the heat circulation chamber 12 from the air inlet 15 for heat circulation, ensuring that the air sent out from the air outlet 18 has a certain amount of heat, so as to heat the tea baking room and other spaces.

[0037] In some embodiments, the heat outlet 16 is centrally disposed on a side of the first heat exchange barrel 1 away from the second heat exchange barrel 2. The heat outlet 16 is centrally disposed so that the heated cold air is only discharged from the heat outlet 16, thereby achieving a uniform temperature.

[0038] In some embodiments, a connector 3 for connecting the heat inlet 14 and the heat outlet 16 is installed on the top of the first heat exchange barrel 1; the connector 3 and the top of the first heat exchange barrel 1 form a connecting channel 31, and the heat outlet 16 and the heat inlet 14 are located in the connecting channel 31. Specifically, in the axial direction of the first heat exchange barrel 1, the projection area of ​​the connector 3 is fan-shaped. The setting of the connector 3 is used to form the connecting channel 31 to guide the hot air. Optionally, the connector 3 is a closed cavity, or the connector 3 is an open structure and is provided with an exhaust mechanism, and also includes an exhaust mechanism, and the heat outlet 16 is connected to the heat inlet 14 through an air supply mechanism.

[0039] In some embodiments, at least three heat circulation chambers 12 are provided; all heat circulation chambers 12 are sequentially arranged along the circumference of the first heat exchange barrel 1 and are sequentially connected to form a circulation channel, and the heat circulation chamber 12 at the end of the circulation channel is connected to the hot air outlet 121. The heat exchange chamber 13 is arranged around all the heat circulation chambers 12. Preferably, three heat circulation chambers 12 are provided.

[0040] In some embodiments, a fuel inlet 17 connected to the inner cavity of the first heat exchange barrel 1 is provided on the side wall of the first heat exchange barrel 1 near one end of the second heat exchange barrel 2. The fuel inlet 17 is used to replenish fuel for the heating cavity of the first heat exchange barrel 1, so that sufficient heat can be generated in the combustion chamber 11, so that the cold air can be heat exchanged in the heat exchange cavity 13. On the other hand, the fuel inlet 17 can also be used to transport cold air to the combustion chamber 11 and provide sufficient oxygen for the fuel in the combustion chamber 11, so that the fuel can be fully burned.

[0041] Embodiment 1 of the present utility model is:

[0042] A hot air furnace comprises a first heat exchange barrel 1 and a second heat exchange barrel 2; the first heat exchange barrel 1 has a combustion chamber 11, a heat cycle chamber 12 and a heat exchange chamber 13 arranged around the heat cycle chamber 12; the top of the first heat exchange barrel 1 is provided with a heat inlet 14, an air inlet 15 connected to the heat cycle chamber 12 and a heat outlet 16 connected to the combustion chamber 11, and the heat outlet 16 is connected to the heat exchange chamber 13 through the heat inlet 14; the heat cycle chamber 12 has a hot air outlet 121; the side wall of the first heat exchange barrel 1 is provided with an air outlet 18, and the air outlet end of the heat exchange chamber 13 is connected to the air outlet 18. The first heat exchange barrel 1 and the second heat exchange barrel 2 are arranged in sequence from top to bottom; the second heat exchange barrel 2 has an air inlet chamber 20, and the air inlet chamber 20 has a cold air inlet 21 and a cold air outlet 22; the cold air inlet 21 is connected to the air inlet end of the heat cycle chamber 12 through the cold air outlet 22, and the air outlet end of the heat cycle chamber 12 is connected to the heat outlet 16. The cold air inlet 21 is provided with an air supply mechanism to deliver the cold air into the second heat exchange barrel 2, and the hot air outlet 121 is provided with an air outlet mechanism to deliver the hot air to a designated location for heating. Preferably, both the air supply mechanism and the air outlet mechanism are blowers. A partition wall 131 is provided in the heat exchange chamber 13, so that after the airflow enters the heat exchange chamber 13 from the heat inlet 14, it flows through the inner wall of the heat exchange chamber 13 and is discharged from the air outlet 18, ensuring that the airflow is fully exchanged with heat.

[0043] In this embodiment, the heat outlet 16 is centrally disposed on a side of the first heat exchange barrel 1 away from the second heat exchange barrel 2 , and the heat inlet 14 is disposed at a position close to the outer wall of the first heat exchange barrel 1 .

[0044] In this embodiment, a connector 3 for connecting the heat inlet 14 and the heat outlet 16 is installed on the side of the first heat exchange barrel 1 away from the second heat exchange barrel 2; the connector 3 and the top of the first heat exchange barrel 1 form a connecting channel 31, and the heat outlet 16 and the heat inlet 14 are located in the connecting channel 31; the heat outlet 16 is connected to the heat inlet 14 through an exhaust mechanism. Preferably, in the axial direction of the first heat exchange barrel 1, the projection area of ​​the connector 3 is fan-shaped; the exhaust mechanism is a blower.

[0045] In this embodiment, six heat circulation chambers 12 are provided, three of which are provided with air inlets 15, and all the heat circulation chambers 12 are sequentially arranged along the circumference of the first heat exchange barrel 1 and are sequentially connected to form a circulation channel, and the heat circulation chamber 12 at the end of the circulation channel is connected to the hot air outlet 121. The heat exchange chamber 13 is arranged around all the heat circulation chambers 12.

[0046] The working principle of the utility model is:

[0047] Thermal cycle principle: The cold air inlet 21 takes in air through the air supply mechanism, and the cold air enters the air inlet chamber 20 and is discharged from the cold air outlet 22, and then enters the thermal cycle chamber 12 from the air inlet 15 for circulation heating. All the airflows heated by the thermal cycle chamber 12 finally flow into the thermal cycle chamber 12 connected to the hot air outlet 121, and are discharged from the hot air outlet 121. The hot air is sent to the tea baking room, greenhouse or shed and other spaces that need heating by the air supply mechanism;

[0048] Heating principle: the air flow enters the combustion chamber 11 from the fuel inlet 17 to absorb heat and is then discharged from the heat outlet 16. Driven by the exhaust mechanism, the air flow after absorbing heat enters the heat exchange cavity 13 from the heat inlet 14. The air flow passes through the inner wall of the heat exchange cavity 13 for sufficient heat exchange and is then discharged from the air outlet 18.

[0049] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A hot blast stove, characterized in that: comprising a first heat exchange barrel; The first heat exchange barrel has a combustion chamber, a heat cycle chamber, and a heat exchange chamber arranged around the heat cycle chamber; The top of the first heat exchange barrel is provided with a heat inlet, an air inlet communicating with the heat cycle chamber, and a heat outlet communicating with the combustion chamber, and the heat outlet is communicated with the heat exchange chamber through the heat inlet; The heat circulation chamber has a hot air outlet; The side wall of the first heat exchange barrel is provided with an air outlet, and the air outlet end of the heat exchange cavity is connected to the air outlet.

2. A hot blast stove according to claim 1, characterized in that: Also includes a second heat exchange barrel; The first heat exchange barrel and the second heat exchange barrel are arranged in sequence from top to bottom; The second heat exchange barrel has an air inlet cavity, and the air inlet cavity has a cold air inlet and a cold air outlet; The cold air inlet is communicated with the air inlet end of the heat circulation chamber through the cold air outlet, and the air outlet end of the heat circulation chamber is communicated with the heat outlet.

3. A hot blast stove according to claim 1, characterized in that: A connecting piece for connecting the heat inlet and the heat outlet is installed on the top of the first heat exchange barrel; The connecting piece and the top of the first heat exchange barrel form a connecting channel, and the heat outlet and the heat inlet are located in the connecting channel.

4. A hot blast stove according to claim 3, characterized in that: In the axial direction of the first heat exchange barrel, the projection area of ​​the connecting member is fan-shaped.

5. A hot blast stove according to claim 1, characterized in that: It also includes an exhaust mechanism, and the heat outlet is connected to the heat inlet through the exhaust mechanism.

6. A hot blast stove according to claim 1, characterized in that: The thermal cycle chambers are provided with at least three; All of the heat circulation chambers are arranged in sequence along the circumference of the first heat exchange barrel and are connected in sequence to form a circulation channel, and the heat circulation chamber located at the end of the circulation channel is connected to the hot air outlet.

7. A hot blast stove according to claim 2, characterized in that: A fuel inlet communicating with the inner cavity of the first heat exchange barrel is provided on a side wall of the first heat exchange barrel at one end close to the second heat exchange barrel.

8. A hot blast stove according to claim 2, characterized in that: The heat outlet is centrally arranged on a side of the first heat exchange barrel away from the second heat exchange barrel.

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