A tunnel oven

Abstract

A kind of tunnel type oven, including preheating section, high temperature section and cooling section in turn butt joint, also include mixing chamber, the exhaust port of preheating section is equipped with first air supplement component between mixing chamber, mixing chamber is communicated with the air inlet of preheating section by first air outlet, second air supplement component is equipped between the air inlet of high temperature section with the second air outlet of mixing chamber, the exhaust port of cooling section is equipped with third air supplement component between mixing chamber.High temperature section hot air part enters preheating section and enters mixing chamber with the exhaust of preheating section by first air supplement component, another part enters cooling section while the exhaust of cooling section enters mixing chamber by third air supplement component, preheating section exhaust and cooling section exhaust are mixed, heat exchange in mixing chamber, part of air in mixing chamber enters preheating section by first air outlet, and another part is high temperature section air supplement, it is favorable to reduce the operating cost of oven, reduce to outside exhaust, more energy saving and environmental protection.

Description

Technical Field

[0001] This invention relates to the field of food and pharmaceutical packaging machinery, and in particular to a tunnel-type drying oven. Background Technology

[0002] In recent years, people have paid increasing attention to the operating costs of equipment and its environmental impact. Existing tunnel ovens, which use outdoor exhaust ventilation, are not the optimal choice in terms of either operating costs or environmental protection. Specifically, for example... Figure 1 As shown, during operation, the air intake and exhaust volumes in the bottle washing room are basically consistent. The preheating and high-temperature sections require supplemental air from the bottle washing room. After heat exchange with the bottles, a small portion of the air in the preheating section is discharged to the bottle washing room, while the majority is discharged outdoors. In the high-temperature section, the air is heated by a heater, increasing both temperature and pressure. After heat exchange with the bottles, part of the hot air is discharged to the preheating section, and the other part is discharged to the cooling section. For the cooling section, in addition to the air flowing in from the high-temperature section, there is also air flowing in from the filling room. Both of these air components exchange heat with the bottles before being discharged outdoors. The air discharged from the preheating and cooling sections is not reused, increasing the operating costs of the equipment and also having a significant environmental impact. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a tunnel oven with a simple structure that helps to reduce the operating cost of the equipment and reduce the amount of exhaust air.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A tunnel-type oven includes a preheating section, a high-temperature section, and a cooling section connected in sequence, and a mixing chamber. A first air supply component is provided between the exhaust port of the preheating section and the mixing chamber. The mixing chamber is connected to the air inlet of the preheating section through a first air outlet. A second air supply component is provided between the second air outlet of the mixing chamber and the air inlet of the high-temperature section. A third air supply component is provided between the exhaust port of the cooling section and the mixing chamber.

[0006] As a further improvement to the above technical solution: the first air supply component includes a first air supply pipe and a first air supply fan. One end of the first air supply pipe is connected to the exhaust port of the preheating section, the other end of the first air supply pipe is connected to the air inlet of the first air supply fan, and the air outlet of the first air supply fan is connected to the mixing chamber.

[0007] As a further improvement to the above technical solution: a first filter is provided on the first make-up air duct.

[0008] As a further improvement to the above technical solution, a first surface cooler is also provided on the first make-up air duct.

[0009] As a further improvement of the above technical solution: the first air supplement pipeline is arranged on the side surface of the preheating section, and the mixing chamber is arranged on the top surface of the preheating section.

[0010] As a further improvement of the above technical solution: the second air supplement assembly comprises a second air supplement pipeline and a second air supplement fan, one end of the second air supplement pipeline is communicated with the second air outlet, the other end of the second air supplement pipeline is connected with the air inlet of the second air supplement fan, and the air outlet of the second air supplement fan is connected with the air inlet of the high-temperature section.

[0011] As a further improvement of the above technical solution: the second air supplement pipeline and the second air supplement fan are arranged on the top surface of the high-temperature section.

[0012] As a further improvement of the above technical solution: the third air supplement assembly comprises a third air supplement fan and a third air supplement pipeline, the air inlet of the third air supplement fan is communicated with the air outlet of the cooling section, the air outlet of the third air supplement fan is communicated with one end of the third air supplement pipeline, and the other end of the third air supplement pipeline is communicated with the mixing chamber.

[0013] As a further improvement of the above technical solution: the cooling section is provided with a second surface air cooler, and a second filter is arranged on the third air supplement pipeline.

[0014] As a further improvement of the above technical solution: the third air supplement fan is arranged on the top surface of the cooling section, and the third air supplement pipeline is arranged on the top surface of the cooling section and the high-temperature section.

[0015] Compared with the prior art, the advantages of the tunnel oven disclosed by the application are as follows: when the tunnel oven works, the hot air in the high-temperature section enters the preheating section and the cooling section due to the high temperature and large pressure, and the exhaust air of the preheating section and the cooling section enters the mixing chamber through the first air supplement assembly and the third air supplement assembly, respectively, the exhaust air of the preheating section and the cooling section is mixed and heat-exchanged in the mixing chamber, so that the temperature and humidity are balanced, part of the air in the mixing chamber enters the preheating section through the first air outlet to supplement the air of the preheating section, and the other part of the air in the mixing chamber enters the high-temperature section through the second air outlet and the second air supplement assembly to supplement the air of the high-temperature section, so that the air circulation of the preheating section, the high-temperature section and the cooling section is realized, the influence of the temperature and humidity on the preheating section and the high-temperature section is reduced, the structure is simple, the operation cost of the oven is reduced, the exhaust air is reduced, and the energy saving and environmental protection are realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the existing tunnel oven in a running state.

[0017] Figure 2 is a schematic structural diagram of the front view of the tunnel oven of the present application.

[0018] Figure 3 is a schematic structural diagram of the top view of the tunnel oven of the present application.

[0019] Figure 4 is the A-A view of Figure 2 .

[0020] Figure 5 is a schematic structural diagram of the second air supplement assembly in operation in the present application.

[0021] Figure 6 is a schematic structural diagram of the third air supplement assembly in operation in the present application.

[0022] Figure 7 is the B-B view of Figure 2 .

[0023] The various reference numerals in the drawings represent: 1, preheating section; 2, high-temperature section; 3, cooling section; 31, second surface cooler; 4, first air supplement assembly; 41, first air supplement pipeline; 42, first air supplement fan; 43, mixing chamber; 431, first air outlet; 432, second air outlet; 44, first filter; 45, first surface cooler; 5, second air supplement assembly; 51, second air supplement pipeline; 52, second air supplement fan; 6, third air supplement assembly; 61, third air supplement fan; 62, third air supplement pipeline; 63, second filter; 7, bottle washing room. DETAILED DESCRIPTION

[0024] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0026] In this application, unless specifically defined and limited otherwise, the terms "assembly", "connected", "connection", "fixed", and the like, should be construed broadly and, for example, can be either fixed connections or detachable connections, or integral; can be mechanical connections, or electrical connections; can be direct connections, or indirect connections via intermediate media, or the internal communication or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0027] The application will be further described in detail below in combination with the accompanying drawings and specific embodiments.

[0028] Figures 2 to 7 An embodiment of the tunnel oven of the application is shown. The tunnel oven of the embodiment comprises a preheating section 1, a high-temperature section 2 and a cooling section 3 which are sequentially butted. The preheating section 1 is provided with a mixing chamber 43 (of course, in other embodiments, the mixing chamber 43 can be arranged at other positions, but compared with the embodiment, the overall pipeline structure of the oven will become complex, the length will increase, and the corresponding equipment cost will also increase). A first air supplement assembly 4 is arranged between the exhaust outlet of the preheating section 1 and the mixing chamber 43. The mixing chamber 43 is communicated with the air inlet of the preheating section 1 through a first air outlet 431. A second air supplement assembly 5 is arranged between the second air outlet 432 of the mixing chamber 43 and the air inlet of the high-temperature section 2. A third air supplement assembly 6 is arranged between the exhaust outlet of the cooling section 3 and the mixing chamber 43.

[0029] In operation, the hot air of the high-temperature section 2 enters the preheating section 1 and the cooling section 3 due to the high temperature and high pressure. A part of the hot air enters the mixing chamber 43 through the first air supplement assembly 4 along with the exhaust air of the preheating section 1. Another part of the hot air enters the cooling section 3. The exhaust air of the cooling section 3 enters the mixing chamber 43 through the third air supplement assembly 6. The exhaust air of the preheating section 1 and the exhaust air of the cooling section 3 are mixed and heat exchanged in the mixing chamber 43, so that the temperature and humidity are balanced. A part of the air in the mixing chamber 43 enters the preheating section 1 through the first air outlet 431 to supplement the air of the preheating section 1. Another part of the air in the mixing chamber 43 enters the high-temperature section 2 through the second air outlet 432 and the second air supplement assembly 5 to supplement the air of the high-temperature section 2. Thus, the air circulation of the preheating section 1, the high-temperature section 2 and the cooling section 3 is realized. The influence of the temperature and humidity on the preheating section 1 and the high-temperature section 2 is reduced. The structure is simple, which is conducive to reducing the operation cost of the oven, reducing the exhaust air, and saving energy and protecting the environment.

[0030] Further, in the embodiment, the first air supplement assembly 4 comprises a first air supplement pipeline 41 and a first air supplement fan 42. One end of the first air supplement pipeline 41 is connected with the air outlet of the preheating section 1, the other end of the first air supplement pipeline 41 is in communication with the air inlet of the first air supplement fan 42, and the air outlet of the first air supplement fan 42 is in communication with the mixing chamber 43. In operation, the first air supplement fan 42 operates, and the air in the preheating section 1 enters the mixing chamber 43 through the first air supplement pipeline 41 and the first air supplement fan 42, so that the structure is simple and reliable.

[0031] Further, in the embodiment, the first air supplement pipeline 41 is provided with a first filter 44. The first filter 44 is used to filter the air outlet of the preheating section 1, so as to avoid impurities in the air outlet from entering the mixing chamber 43 and then entering the preheating section 1 and the high-temperature section 2, which is beneficial to ensure the cleanliness of the air supplement of the preheating section 1 and the high-temperature section 2.

[0032] Further, in the embodiment, the first air supplement pipeline 41 is further provided with a first surface cooler 45. The first surface cooler 45 is used to cool and dehumidify the air outlet of the preheating section 1, so as to reduce the influence of the air supplement on the temperature and humidity of the air in the preheating section 1 and the high-temperature section 2, which is beneficial to keep the oven stable.

[0033] As a preferred embodiment, the first air supplement pipeline 41 is arranged on the side surface of the preheating section 1, and the mixing chamber 43 is arranged on the top surface of the preheating section 1. The hot air entering the preheating section 1 from the high-temperature section 2 has a tendency to flow upward. Arranging the mixing chamber 43 on the top surface of the preheating section 1 is beneficial to collect the air outlet of the preheating section 1, and also facilitates the smooth entry of the mixed air into the preheating section 1 and the high-temperature section 2, and does not change the existing structure of the preheating section 1, so that the structure is simple and reasonable.

[0034] Further, in the embodiment, the second air supplement assembly 5 comprises a second air supplement pipeline 51 and a second air supplement fan 52. One end of the second air supplement pipeline 51 is in communication with the second air outlet 432, the other end of the second air supplement pipeline 51 is connected with the air inlet of the second air supplement fan 52, and the air outlet of the second air supplement fan 52 is connected with the air inlet of the high-temperature section 2. In operation, the second air supplement fan 52 operates, and the air in the mixing chamber 43 enters the high-temperature section 2 in sequence through the second air outlet 432, the second air supplement pipeline 51 and the second air supplement fan 52, so that the structure is simple and reliable.

[0035] As a preferred embodiment, the second air supplement pipeline 51 and the second air supplement fan 52 are arranged on the top surface of the high-temperature section 2, which is beneficial to the smooth entry of the mixed air in the mixing chamber 43 into the high-temperature section 2, and does not change the existing structure of the high-temperature section 2, so that the layout is simple and reasonable.

[0036] Further, in the embodiment, the third air supplement assembly 6 comprises a third air supplement fan 61 and a third air supplement pipeline 62, the air inlet of the third air supplement fan 61 is communicated with the air outlet of the cooling section 3, the air outlet of the third air supplement fan 61 is communicated with one end of the third air supplement pipeline 62, and the other end of the third air supplement pipeline 62 is communicated with the mixing chamber 43. In operation, the third air supplement fan 61, the air in the cooling section 3 enters the mixing chamber 43 through the third air supplement fan 61 and the third air supplement pipeline 62, and the structure is simple and reliable.

[0037] Further, in the embodiment, the cooling section 3 is provided with a second surface cooler 31, and the third air supplement pipeline 62 is provided with a second filter 63. The second surface cooler 31 is used to cool and dehumidify the exhaust air of the cooling section 3, so as to reduce the influence of the air supplement on the temperature and humidity of the air in the preheating section 1 and the high-temperature section 2, and facilitate the stable operation of the oven; the second filter 63 is used to filter the exhaust air of the cooling section 3, so as to avoid that impurities in the exhaust air enter the mixing chamber 43 and then enter the preheating section 1 and the high-temperature section 2, and facilitate the cleanliness of the air supplement of the preheating section 1 and the high-temperature section 2.

[0038] As a preferred embodiment, the third air supplement fan 61 is arranged on the top surface of the cooling section 3, and the third air supplement pipeline 62 is arranged on the top surfaces of the cooling section 3 and the high-temperature section 2, so as to facilitate the smooth entry of the exhaust air of the cooling section 3 into the mixing chamber 43, and meanwhile, the existing structure of the cooling section 3 is not changed. Of course, in other embodiments, the third air supplement pipeline 62 can be directly connected with the first air supplement pipeline 41 to mix, and then the preheating section 1 and the high-temperature section 2 are supplemented with air, but compared with the special mixing chamber 43, the mixing effect is slightly poor.

[0039] Although the present application has been disclosed with reference to the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make many possible changes and modifications to the technical solutions disclosed above, or make equivalent embodiments with equivalent changes, without departing from the scope of the technical solutions of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solutions of the present application, shall fall within the scope of protection of the technical solutions of the present application.

Claims

1. A tunnel oven comprising, in sequence, a preheating section (1), a high-temperature section (2) and a cooling section (3), characterized in that: The first air supplement assembly (4) is arranged between the exhaust port of the preheating section (1) and a mixing chamber (43), the mixing chamber (43) is communicated with the air inlet of the preheating section (1) through a first air outlet (431), a second air supplement assembly (5) is arranged between the second air outlet (432) of the mixing chamber (43) and the air inlet of the high-temperature section (2), a third air supplement assembly (6) is arranged between the exhaust port of the cooling section (3) and the mixing chamber (43), the first air supplement assembly (4) comprises a first air supplement pipeline (41) and a first air supplement fan (42), one end of the first air supplement pipeline (41) is connected with the exhaust port of the preheating section (1), the other end of the first air supplement pipeline (41) is communicated with the air inlet of the first air supplement fan (42), and the air outlet of the first air supplement fan (42) is communicated with the mixing chamber (43).

2. The tunnel oven of claim 1, wherein: The first air supplement pipeline (41) is provided with a first filter (44).

3. The tunnel oven of claim 1, wherein: The first air supplement pipeline (41) is further provided with a first surface cooler (45).

4. The tunnel oven of claim 1, wherein: The first air supplement pipeline (41) is arranged on the side surface of the preheating section (1), and the mixing chamber (43) is arranged on the top surface of the preheating section (1).

5. The tunnel oven of claim 1, wherein: The second air supplement assembly (5) comprises a second air supplement pipeline (51) and a second air supplement fan (52), one end of the second air supplement pipeline (51) is communicated with the second air outlet (432), the other end of the second air supplement pipeline (51) is connected with the air inlet of the second air supplement fan (52), and the air outlet of the second air supplement fan (52) is connected with the air inlet of the high-temperature section (2).

6. The tunnel oven of claim 5, wherein: The second air supplement pipeline (51) and the second air supplement fan (52) are arranged on the top surface of the high-temperature section (2).

7. The tunnel oven according to any one of claims 1 to 5, characterized in that: The third air supplement assembly (6) comprises a third air supplement fan (61) and a third air supplement pipeline (62), the air inlet of the third air supplement fan (61) is communicated with the exhaust port of the cooling section (3), the air outlet of the third air supplement fan (61) is communicated with one end of the third air supplement pipeline (62), and the other end of the third air supplement pipeline (62) is communicated with the mixing chamber (43).

8. The tunnel oven of claim 7, wherein: The cooling section (3) is provided with a second surface cooler (31), and the third air supplement pipeline (62) is provided with a second filter (63).

9. The tunnel oven of claim 7, wherein: The third air supplement fan (61) is arranged on the top surface of the cooling section (3), and the third air supplement pipeline (62) is arranged on the top surfaces of the cooling section (3) and the high-temperature section (2). The third air supplement fan (61) is arranged on the top surface of the cooling section (3), and the third air supplement pipeline (62) is arranged on the top surfaces of the cooling section (3) and the high-temperature section (2).

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