Circulating air hot blast stove structure
By setting a partition in the heat blasting furnace, the heating cavity is divided into two parts, so that the circulating air passes through the upper and lower parts of the burning tube for heat exchange, which solves the problem of insufficient heat exchanges in the circulating air. Essence
Patent Information
- Application Number
- CN202323536106.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-25
AI Technical Summary
In existing hot air furnaces, the circulating air does not pass through the combustion cylinder to fully exchange heat, resulting in unsatisfactory heat exchange effect.
By setting a partition in the furnace body, the heating cavity is divided into two parts, and part of the burning tube is located in the cavity A, and the other part is located in the cavity B. The cycle wind is forced to pass through the upper and lower part of the burning tube. Enter the drying room.
The heat exchange rate between the circulating air and the burning cylinder can be improved, the circulating air is fully fulfilled, and the drying efficiency is improved.
Smart Images
Figure CN222417936U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coating drying, in particular to a circulating air hot air furnace structure. Background Art
[0002] Drying technology in the field of coating technology is to dry the surface coating of items that have been sprayed, painted, coated, etc. by controlling different heat sources such as hot air, infrared, ultraviolet, etc. to achieve the effect of curing. Its purpose is to shorten the drying time of the items and increase the drying speed to achieve the purpose of high efficiency and energy saving.
[0003] As a drying equipment, hot air furnace is widely used in the field of coating technology, such as Figure 1 As shown, its working principle is that the combustion tube in the hot air furnace burns and heats the air, and the fan draws the hot air from the hot air furnace to the drying chamber to dry the coating on the surface of the workpiece to achieve the effect of solidification. The air in the drying chamber will be drawn into the hot air furnace for circulating heating.
[0004] At present, the combustion barrel in the hot blast furnace is arranged in the middle position of the furnace body, an air inlet is opened in the furnace body behind the combustion barrel, fans are arranged on both sides of the furnace body, and an air outlet is opened next to each fan to realize air circulation and air supply. However, since the fan exhausts air at both ends, the circulating air is sucked away by the fan without sufficient heat exchange through the combustion barrel, so the heat exchange effect is not ideal. Utility Model Content
[0005] The embodiment of the present application provides a circulating air hot air furnace structure for improving the heat exchange effect between the circulating air and the combustion tube.
[0006] The present application provides a circulating air hot air furnace structure, comprising:
[0007] The furnace body has a heating chamber, an air inlet A and an air inlet B connected to the heating chamber are opened in the middle of the furnace body, the air inlet A is located obliquely above the air inlet B, and air outlets connected to the heating chamber are opened at both ends of the furnace body;
[0008] A combustion tube is installed in the middle of the heating chamber, and the combustion tube is located between the air inlet A and the air inlet B;
[0009] A partition is connected to the heating chamber, and the partition divides the heating chamber into chamber A and chamber B. The upper half of the combustion tube and the air inlet A are located in chamber A, and the lower half of the combustion tube and the air inlet B are located in chamber B.
[0010] The beneficial effect of the above embodiment is that the heating chamber is divided into chamber A and chamber B by a partition, and a part of the combustion tube is located in chamber A and the other part is located in chamber B. The forced circulating air passes through the upper periphery of the combustion tube and the lower periphery of the combustion tube respectively and then enters the drying chamber through the corresponding air outlet, so that the circulating air can exchange heat more fully, thereby improving the heat exchange rate between the circulating air and the combustion tube.
[0011] Based on the above embodiments, the embodiments of the present application may also be improved as follows:
[0012] In one of the embodiments of the present application: the partition includes: a vertical section A, a transverse section, and a vertical section B, the vertical section A is located obliquely above the vertical section B, the transverse section connects the vertical section A with the vertical section B, and the combustion tube extends downward through the hole correspondingly opened in the transverse section.
[0013] In one embodiment of the present application: a gap A is provided between the upper end of the combustion tube and the vertical section A, and the air inlet A extends into the gap A; a gap B is provided between the lower end of the combustion tube and the vertical section B, and the air inlet B extends into the gap B. The beneficial effect of this step is that more circulating air can pass through the gap A and the gap B, so that the circulating air can more fully contact the combustion tube and perform heat exchange.
[0014] In one embodiment of the present application, it further comprises: a fire stop cone connected to the cavity B, and the fire stop cone is arranged directly below the combustion tube. The beneficial effect of this step is that the fire stop cone prevents the heat source in the combustion tube from directly baking the cavity wall below.
[0015] In one of the embodiments of the present application: it also includes: a cover plate, the furnace body is provided with inspection openings corresponding to the cavity A and the cavity B, and the cover plate is connected to the furnace body and closes the inspection openings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0017] Figure 1 It is a structural schematic diagram of the circulating air hot blast furnace structure.
[0018] Among them, 1 is a furnace body, 101 is an air inlet A, 102 is an air inlet B, 103 is an air outlet, 104 is a cavity A, 105 is a cavity B, 106 is an inspection port, 2 is a combustion tube, 3 is a partition, 301 is a vertical section A, 302 is a horizontal section, 303 is a vertical section B, 4 is a fire blocking cone, and 5 is a cover plate. DETAILED DESCRIPTION
[0019] In this application, unless otherwise clearly specified and limited, the terms in this application should be understood in a broad sense, such as connection can be fixed connection, detachable connection or integration, direct connection or indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of different terms in this utility model can be understood according to specific circumstances, and the scope of the specific meaning should be limited to realizing the functions of this application.
[0020] like Figure 1 As shown, a circulating air hot blast furnace structure includes: a furnace body 1, a combustion tube 2, and a partition 3. The furnace body 1 has a heating chamber. An air inlet A101 and an air inlet B102 connected to the heating chamber are opened in the middle of the furnace body 1. The air inlet A101 is located obliquely above the air inlet B102. Air outlets 103 connected to the heating chamber are opened at both ends of the furnace body 1. The combustion tube 2 is installed in the middle of the heating chamber, and the combustion tube 2 is located between the air inlet A101 and the air inlet B102. The partition 3 is connected to the heating chamber, and the partition 3 divides the heating chamber into a cavity A104 and a cavity B105. The upper half of the combustion tube 2 and the air inlet A101 are located in the cavity A104, and the lower half of the combustion tube 2 and the air inlet B102 are located in the cavity B105.
[0021] In some embodiments of the present application, Figure 1 As shown, the furnace body 1 is also connected to a burner, which is installed at the upper end of the outer side of the furnace body 1 . The burner is connected to the combustion tube 2 , and a heat source is provided to the inside of the combustion tube 2 through the burner.
[0022] In some embodiments of the present application, Figure 1 As shown, the partition 3 includes: a vertical section A301, a transverse section 302, and a vertical section B303. The vertical section A301 is located obliquely above the vertical section B303. The transverse section 302 connects the vertical section A301 with the vertical section B303. The combustion tube 2 extends downward through the corresponding hole opened in the transverse section 302.
[0023] In some embodiments of the present application, Figure 1As shown, the air inlet A101 is adjacent to the vertical section A301, the air inlet B102 is adjacent to the vertical section B303, the air inlet A101 and the air inlet B102 are separated by a partition 3, the combustion tube 2 is located between the air inlet A101 and the air inlet B102, there is a gap A between the upper end of the combustion tube 2 and the vertical section A301, the air inlet A101 extends into the gap A, there is a gap B between the lower end of the combustion tube 2 and the vertical section B303, the air inlet B102 extends into the gap B. Through this arrangement, part of the circulating air is forced to pass through the gap A and the gap B, thereby improving the contact rate between the circulating air and the surface of the combustion tube 2.
[0024] In some embodiments of the present application, Figure 1 As shown, the circulating air hot blast furnace structure also includes: a fire stop cone 4, which is connected to the cavity B105, and is arranged at intervals just below the combustion tube 2. The fire stop cone 4 is a metal plate, and the upper end of the fire stop cone 4 is a conical structure with the cone tip facing upward. By arranging the fire stop cone 4 below the combustion tube 2, the heat source in the combustion tube 2 is prevented from directly baking the cavity wall of the heating cavity.
[0025] In some embodiments of the present application, Figure 1 As shown, the circulating air hot blast furnace structure also includes: a cover plate 5 , and the furnace body 1 is provided with inspection openings 106 corresponding to the cavities A 104 and B 105 . The cover plate 5 is connected to the furnace body 1 and closes the inspection openings 106 .
[0026] In some embodiments of the present application, Figure 1 As shown, the inspection port 106 is opened on the upper end surface of the furnace body 1, one end of the cover plate 5 is hinged to the furnace body 1, and the other end is connected to the furnace body 1 through a pressure lock to be openable and closable. A circle of high-temperature resistant sealing ring is arranged inside the inspection port 106. When the cover plate 5 is closed, the lower end of the cover plate 5 is pressed against the upper end of the sealing ring.
[0027] This circulating air hot air furnace structure divides the heating chamber into cavity A104 and cavity B105 through a partition 3, and makes a part of the combustion tube 2 located in cavity A104 and the other part located in cavity B105, and forces the circulating air to pass through the upper periphery of the combustion tube 2 and the lower periphery of the combustion tube 2 respectively and then enter the drying chamber through the corresponding air outlet 103, so that the circulating air can exchange heat more fully, thereby improving the heat exchange rate between the circulating air and the combustion tube 2.
[0028] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.
Claims
1. A circulating air hot blast furnace structure, characterized in that: include: The furnace body has a heating chamber, an air inlet A and an air inlet B connected to the heating chamber are opened in the middle of the furnace body, the air inlet A is located obliquely above the air inlet B, and air outlets connected to the heating chamber are opened at both ends of the furnace body; A combustion tube is installed in the middle of the heating chamber, and the combustion tube is located between the air inlet A and the air inlet B; A partition is connected to the heating chamber, and the partition divides the heating chamber into chamber A and chamber B. The upper half of the combustion tube and the air inlet A are located in chamber A, and the lower half of the combustion tube and the air inlet B are located in chamber B.
2. The circulating air hot blast furnace structure according to claim 1 is characterized in that: The partition includes: a vertical section A, a transverse section, and a vertical section B. The vertical section A is located obliquely above the vertical section B. The transverse section connects the vertical section A with the vertical section B. The combustion tube extends downward through the corresponding hole opened in the transverse section.
3. The circulating air hot blast furnace structure according to claim 2 is characterized in that: There is a gap A between the upper end of the combustion tube and the vertical section A, and the air inlet A extends into the gap A. There is a gap B between the lower end of the combustion tube and the vertical section B, and the air inlet B extends into the gap B.
4. The circulating air hot blast furnace structure according to claim 1 is characterized in that: Also includes: A fire stop cone is connected to the cavity B and is arranged directly below the combustion tube.
5. The circulating air hot blast furnace structure according to claim 1 is characterized in that: Also includes: A cover plate, wherein the furnace body is provided with inspection openings corresponding to the cavity A and the cavity B, and the cover plate is connected to the furnace body and closes the inspection openings.