Automatic air supply mechanism

Abstract

An automatic air supply mechanism comprises a heating cavity, heat preservation plates located on the two sides of the heating cavity, a heater located at the top of the heating cavity, a bottom assembly located at the bottom of the heating cavity and a plurality of hot air partition plates located in the heating cavity, the air outlet side of the heater is connected with the hot air partition plates through first air supply pipes, and air guide pipes are embedded in the heat preservation plates; an air inlet is formed in the upper end of the air guide pipe, an air outlet is formed in the lower end of the air guide pipe, the heater is connected with the air inlet of the air guide pipe through a second air supply pipe, the bottom assembly comprises a bottom plate and bottom air boxes arranged on the two sides of the bottom plate, and a bottom air cavity is formed between the bottom air boxes on the two sides and located below the product channel; and an air outlet of the air guide pipe is communicated with the bottom air box. The heating device is high in heating uniformity, excellent in energy efficiency and compact in structure.

Description

Technical Field

[0001] This utility model relates to the field of industrial heating equipment technology, and in particular to an automatic air supply mechanism for product baking, drying and other processes, which achieves efficient and uniform heating by optimizing the airflow path and hot air circulation structure. Background Technology

[0002] In existing industrial heating equipment, hot air circulation systems typically employ a single air supply path (such as top air supply or side air supply), which presents the following problems: 1. Uneven heating: The temperature difference between the upper and lower surfaces of the product is large due to the difference in airflow distribution, affecting process quality; 2. High energy consumption: The hot air circulation path is long, resulting in significant heat loss, and the bottom area is difficult to cover effectively; 3. Complex structure: Additional air guiding components are required to achieve uniform air supply, which takes up space and is difficult to maintain. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an automatic air supply mechanism that has high heating uniformity, excellent energy efficiency and compact structure.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: an automatic air supply mechanism, including a heating chamber, insulation plates located on both sides of the heating chamber, a heater located at the top of the heating chamber, a bottom assembly located at the bottom of the heating chamber, and several hot air baffles located in the heating chamber. A product channel is formed between adjacent hot air baffles. The air outlet side of the heater is connected to the hot air baffle through a first air supply pipe. The side of the hot air baffle is provided with an air outlet facing the product channel. An air guide pipe is embedded in the insulation plate. The air guide pipe is vertically arranged. The upper end of the air guide pipe is provided with an air inlet, and the lower end is provided with an air outlet. The heater is connected to the air inlet of the air guide pipe through a second air supply pipe. The bottom assembly includes a bottom plate and bottom air boxes located on both sides of the bottom plate. A bottom air cavity is formed between the two bottom air boxes. The bottom air cavity is located below the product channel. The air outlet of the air guide pipe communicates with the bottom air box. The principle of this utility model is as follows: First air supply path: The heater delivers hot air to the hot air baffle through the first air supply pipe, and the air outlet on the side of the hot air baffle directly guides the hot air into the product channel; Second air supply path: The heater is connected to the air guide pipe embedded in the insulation board through the second air supply pipe, and the hot air is delivered downward through the air guide pipe to the bottom air box, and finally diffuses upward from the bottom air cavity to the product channel; The bottom air cavity is located directly below the product channel, and hot air is evenly released through the bottom air outlet of the bottom air box to form an auxiliary heating airflow from bottom to top, eliminating the bottom heating blind spot.

[0005] As an improvement, the hot air baffle includes a baffle box and a baffle plate disposed on the air outlet side of the baffle box.

[0006] As an improvement, the air duct is rectangular, and the upper end of the air duct is provided with an inclined air guide connector, and the second air supply duct is connected to the air guide connector.

[0007] As an improvement, the bottom assembly also includes a support plate disposed below the base plate, with a heat insulation cavity formed between the support plate and the base plate, and a support seat also provided between the support plate and the base plate.

[0008] As an improvement, the bottom air box is formed by a cover plate and a bottom plate, and the cover plate has a bottom air outlet on the side facing the bottom air cavity.

[0009] The beneficial effects of this utility model compared with the prior art are:

[0010] 1. Uniform heating: Dual-path air supply (top + bottom) forms a three-dimensional hot air circulation, resulting in a small temperature difference between the upper and lower surfaces of the product;

[0011] 2. Energy-saving and efficient: The air duct is embedded in the insulation board to reduce heat loss and lower energy consumption;

[0012] 3. Compact structure: The integrated design of the air duct and insulation board saves space. Attached Figure Description

[0013] Figure 1 This is a top view of the automatic air supply mechanism.

[0014] Figure 2 This is a diagram of the circulating air path for an automatic air supply mechanism.

[0015] Figure 3 This is a schematic diagram of one side of the insulation board.

[0016] Figure 4 This is a schematic diagram of the bottom component. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figures 1 to 4As shown, an automatic air supply mechanism, applicable to an oven, includes a heating chamber, insulation plates 2 located on both sides of the heating chamber, a heater 1 located at the top of the heating chamber, a bottom assembly located at the bottom of the heating chamber, and several hot air baffles 7 located within the heating chamber. Each hot air baffle 7 includes a baffle air box and a baffle plate on the air outlet side of the baffle air box. The airflow and angle of the hot air baffle 7 can be adjusted by adjusting the height of the baffle plate. A product channel is formed between adjacent hot air baffles 7. The air outlet side of the heater 1 is connected to the hot air baffle 7 via a first air supply pipe 12. The side of the baffle air box has air outlet holes facing the product channel. The insulation board 2 has an embedded air guide duct 5, and the integrated design of the air guide duct 5 and the insulation board 2 saves space. The air guide duct 5 is vertically arranged, with an air inlet at the upper end and an air outlet at the lower end. The heater 1 is connected to the air inlet of the air guide duct 5 through the second air supply duct 3, thereby directing hot air to the bottom. The air guide duct 5 is rectangular, and an inclined air guide connector 4 is provided at the air inlet at the upper end of the air guide duct 5. The second air supply duct 3 is connected to the air guide connector 4, and the hot air from the second air supply duct 3 is introduced into the air guide duct 5 through the air guide connector 4, reducing airflow resistance and improving sealing. The bottom assembly includes a base plate 11, bottom air boxes 6 on both sides of the base plate 11, and a support plate 9 below the base plate 11. A bottom air cavity 10 is formed between the two bottom air boxes 6. The bottom air cavity 10 is located below the product channel. The air outlet of the air guide pipe 5 is connected to the bottom air box 6. The heater 1 delivers hot air to the air guide pipe 5 through the second air supply pipe 3. The hot air is delivered downward to the bottom air box 6, and the hot air in the bottom air box 6 enters the bottom air cavity 10. A heat insulation cavity is formed between the support plate 9 and the base plate 11. A support seat 8 is also provided between the support plate 9 and the base plate 11. The heat insulation cavity blocks the downward transfer of heat to ensure mechanical strength. The bottom air box 6 is surrounded by a cover plate and the base plate 11. A bottom air outlet 13 is provided on the side of the cover plate facing the bottom air cavity 10. According to the heating temperature zone, several isolation spaces can be set in the bottom air box 6, and each isolation space corresponds to a temperature zone.

[0019] The principle of this utility model is as follows: First air supply path: Heater 1 delivers hot air to hot air baffle 7 through first air supply pipe, and the air outlet on the side of hot air baffle 7 directly guides the hot air into the product channel; Second air supply path: Heater 1 is connected to air guide pipe 5 embedded in insulation board 2 through second air supply pipe 3, and hot air is delivered downward to bottom air box 6 through air guide pipe 5, and finally diffuses upward from bottom air cavity 10 to product channel; Bottom air cavity 10 is located directly below product channel, and hot air is evenly released through bottom air outlet of bottom air box 6 to form auxiliary heating airflow from bottom to top, eliminating bottom heating blind spot.

Claims

1. An automatic air feeding mechanism, comprising a heating cavity, heat preservation plates located at both sides of the heating cavity, a heater located at the top of the heating cavity, a bottom assembly located at the bottom of the heating cavity, and a plurality of hot air baffles located in the heating cavity, product channels being formed between adjacent hot air baffles, an air outlet side of the heater being connected with the hot air baffles through a first air feeding pipe, and the side of the hot air baffles being provided with air outlet holes facing the product channels; characterized in that: The heat preservation plate is provided with an embedded air guide pipe, the air guide pipe is vertically arranged, the upper end of the air guide pipe is provided with an air inlet, the lower end is provided with an air outlet, the heater is connected with the air inlet of the air guide pipe through a second air supply pipe, the bottom assembly comprises a bottom plate and bottom air boxes arranged on both sides of the bottom plate, a bottom air cavity is formed between the bottom air boxes, the bottom air cavity is located below the product channel, and the air outlet of the air guide pipe is communicated with the bottom air box. ​ 2. The automatic air supply mechanism according to claim 1, characterized by: The hot air partition plate comprises a partition plate air box and a wind baffle arranged on the air outlet side of the partition plate air box.

3. The automatic air supply mechanism according to claim 1, characterized by: The air guide pipe is in a rectangular shape, the upper end of the air guide pipe is provided with an air guide joint arranged in an inclined manner, and the second air supply pipe is connected with the air guide joint.

4. The automatic air supply mechanism according to claim 1, wherein: The bottom assembly further comprises a supporting plate arranged below the bottom plate, a heat insulation cavity is formed between the supporting plate and the bottom plate, and a supporting seat is further arranged between the supporting plate and the bottom plate.

5. The automatic air supply mechanism according to claim 1, wherein: The bottom air box is surrounded by a cover plate and a bottom plate, and the side of the cover plate facing the bottom air cavity is provided with a bottom air outlet.

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