Back air inlet structure of hot air circulating furnace

Abstract

The utility model discloses a hot -blast circulating stove back air inlet structure relates to hot -blast circulating stove technical field, including no. The middle two sides of one side of no. The upper and lower end of no. The upper and lower end of no. The lower end of end cover is located and is located away from no. The utility model discloses the setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no. The setting of no

Description

Technical Field

[0001] This utility model relates to the field of hot air circulating furnace technology, and in particular to a back air inlet structure for a hot air circulating furnace. Background Technology

[0002] The hot air circulating oven is a baking equipment developed by combining advanced hot air oven technology from home and abroad with experience in commercial food ovens. It is mainly used for food processing such as bread and cakes, and is suitable for hotels, supermarkets, bakeries, schools, and factories. The equipment adopts a modular design and features small size, low energy consumption, high output, and uniform baking temperature.

[0003] In existing technologies, hot air circulating furnaces use heating pipes and fans to circulate airflow within the furnace. However, the fans in current hot air furnaces are located at the back and are used directly. The direction of airflow in and out is not fully restricted, resulting in uneven internal airflow and varying temperatures throughout the furnace. This requires a longer operating time to achieve a more uniform temperature inside the furnace, leading to poor performance. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the existing hot air circulation furnace, the heating pipe and the fan work together to cause the airflow inside the furnace to circulate. However, the fans in the current hot air furnace are all located at the back and are used directly. The direction of airflow in and out is not completely restricted, resulting in uneven airflow inside the furnace and different temperatures in different parts of the furnace. It takes a long time to work to make the temperature inside the furnace as uniform as possible, resulting in poor performance. Therefore, this invention proposes a back air intake structure for hot air circulation furnace.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a back air inlet structure for a hot air circulating furnace, comprising a No. 1 base frame, on both sides of the middle part of one side of the No. 1 base frame, a No. 2 base frame is provided on one side of the No. 1 base frame, and No. 2 air inlets are provided at both the upper and lower ends of the No. 2 base frame, and end sleeves are fixedly connected to both the upper and lower ends of the No. 1 base frame. A No. 1 air inlet is provided at the lower end of the end sleeve on the side away from the No. 2 base frame, and a No. 1 air outlet is provided on the other side of the lower end of the end sleeve. The No. 1 air outlet is connected to the No. 2 air inlet. The No. 1 base frame, the No. 2 base frame, the end sleeves, and the cover plate are all installed inside the hot air circulating furnace, and the No. 1 base frame and the end sleeves are used in place of the furnace wall.

[0006] Preferably, the first base frame has a second air outlet on both sides of the middle section, and the second air outlet is connected to the fan.

[0007] Preferably, a limiting sleeve is fixedly connected to one side of the first base frame, and connection holes are provided at the four corners of the fan, with the limiting sleeve inserted into the connection holes.

[0008] Preferably, a heating rod is fixedly connected inside the second base frame, and a retaining ring is fixedly connected to one side of the second base frame, the retaining ring being inserted into the first base frame.

[0009] Preferably, the end of the end sleeve is provided with a cover plate, and a second retaining ring is fixedly connected to one end of the cover plate near the end sleeve, and the second retaining ring is inserted into the end sleeve.

[0010] Preferably, a dust filter frame is provided inside the end sleeve, the dust filter frame is inserted into the first air inlet, and the end face of the second retaining ring is in contact with the dust filter frame.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, an airflow channel is formed by setting up a No. 1 base frame, a No. 2 base frame, and an end sleeve. The No. 1 air inlet allows airflow to enter from the front of the hot air circulating furnace. The airflow is then discharged from the middle by a fan. In this way, the airflow in the inner cavity of the hot air circulating furnace is more uniform, reducing the temperature difference in various parts of the furnace. Moreover, this method has a simple structure and low production cost.

[0013] 2. In this utility model, the installation is carried out by inserting a first retaining ring and a second retaining ring, which facilitates the disassembly and cleaning of the fan, heating rod, and dust filter rack. This makes it easy to disassemble and use. By setting the limiting sleeve rod, the fan is pre-connected to the first base frame by inserting a retaining ring, which facilitates the installation of bolts and makes the installation of the fan more convenient and quick. At the same time, the second retaining ring can squeeze and restrict the dust filter rack to ensure the stability of use. The dust filter rack can filter the dust in the furnace and ensure the cleanliness of the furnace. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural diagram of the air inlet structure at the back of a hot air circulating furnace. Figure 1 ;

[0015] Figure 2 This utility model provides a three-dimensional structural diagram of the air inlet structure at the back of a hot air circulating furnace. Figure 2 ;

[0016] Figure 3 An exploded view of the back air inlet structure of a hot air circulating furnace is provided for this utility model;

[0017] Figure 4 This utility model presents a three-dimensional structural diagram of the No. 2 base frame in the back air inlet structure of a hot air circulating furnace.

[0018] Legend: 1. Base frame No. 1; 2. Base frame No. 2; 3. End sleeve; 4. Cover plate; 5. Fan; 6. Air inlet No. 1; 7. Dust filter frame; 8. Restriction sleeve rod; 9. Connecting hole; 10. Air inlet No. 2; 11. Snap ring No. 1; 12. Snap ring No. 2; 13. Air outlet No. 1; 14. Air outlet No. 2; 15. Heating rod. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a back air intake structure for a hot air circulating furnace, including a first base frame 1. Fans 5 are fixedly connected to both sides of the middle part of one side of the first base frame 1. A second base frame 2 is provided on one side of the first base frame 1. The upper and lower ends of the second base frame 2 are provided with second air inlets 10. The upper and lower ends of the first base frame 1 are fixedly connected with end sleeves 3. The lower end of the end sleeve 3, located on the side away from the second base frame 2, is provided with a first air inlet 6. The other side of the lower end of the end sleeve 3 is provided with a first air outlet 13. The first air outlet 13 is connected to the second air inlet 10. The first base frame 1, the second base frame 2, the end sleeve 3, and the cover plate 4 are all installed inside the hot air circulating furnace. The first base frame 1 and the end sleeve 3 are used in place of the furnace wall.

[0022] The specific settings and functions of this embodiment are described in detail below. The arrangement of the No. 1 base frame 1, the No. 2 base frame 2, and the end sleeve 3 forms an airflow channel. The No. 1 air inlet 6 allows airflow to enter from the front of the hot air circulation furnace. The fan 5 causes the airflow to exit from the middle. In this way, the airflow in the inner cavity of the hot air circulation furnace is more uniform, reducing the temperature difference in various parts of the furnace. Moreover, this method has a simple structure and low production cost.

[0023] Example 2: Figure 1 - Figure 4As shown, the first base frame 1 has two air outlets 14 on both sides of the middle section. The air outlets 14 are connected to the fan 5. A limiting sleeve 8 is fixedly connected to one side of the first base frame 1. The fan 5 has four connecting holes 9 at its four corners. The limiting sleeve 8 is inserted into the connecting holes 9. A heating rod 15 is fixedly connected inside the second base frame 2. A retaining ring 11 is fixedly connected to one side of the second base frame 2. The retaining ring 11 is inserted into the first base frame 1. A cover plate 4 is provided at the end of the end sleeve 3. A retaining ring 12 is fixedly connected to the end of the cover plate 4 near the end sleeve 3. The retaining ring 12 is inserted into the end sleeve 3. A dust filter rack 7 is provided inside the end sleeve 3. The dust filter rack 7 is inserted into the first air inlet 6. The end face of the retaining ring 12 contacts the dust filter rack 7. The retaining ring 11 and the first base frame 1, as well as the retaining ring 12 and the end sleeve 3, are connected by an interference fit.

[0024] The overall effect of this embodiment is that by setting the first retaining ring 11 and the second retaining ring 12, the installation is carried out by plugging in, which facilitates the subsequent disassembly and cleaning of the fan 5, heating rod 15 and dust filter frame 7, making it easy to disassemble and use. By setting the limiting sleeve 8, the fan 5 is pre-connected to the first base frame 1 by plugging in, which facilitates the subsequent installation of bolts, making the installation of the fan 5 more convenient and quick. At the same time, the second retaining ring 12 can squeeze and restrict the dust filter frame 7 to ensure the stability of use. The dust filter frame 7 can filter the dust in the furnace and ensure the cleanliness of the furnace.

[0025] The usage and working principle of this device are as follows: When working, the fan 5 and the heating rod 15 are started. The airflow enters from the first air inlet 6, is filtered by the dust filter rack 7, and then flows into the second air inlet 10. The airflow is heated by the heating rod 15. Then the hot air enters the furnace and heats the objects inside the furnace. As the number of times the airflow is heated increases, the temperature inside the furnace gradually rises.

[0026] During installation, first insert the dust filter frame 7 into the first air inlet 6, then install the second retaining ring 12 and the end sleeve 3. Next, insert the limiting sleeve 8 into the connecting hole 9 and install it with bolts. In this way, fix the fan 5 to the first base frame 1. Then, insert the first retaining ring 11 into the first base frame 1. Finally, install the first base frame 1, the second base frame 2, and the end sleeve 3 into the hot air circulating furnace. After the wiring is installed, it can be used.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A back air inlet structure for a hot air circulating furnace, characterized in that: The system includes a first base frame (1), with fans (5) fixedly connected to both sides of the middle part of one side of the first base frame (1). A second base frame (2) is provided on one side of the first base frame (1). The second base frame (2) has a second air inlet (10) at both the upper and lower ends. The first base frame (1) has an end sleeve (3) fixedly connected to both the upper and lower ends. An air inlet (6) is provided at the lower end of the end sleeve (3) on the side away from the second base frame (2). An air outlet (13) is provided on the other side of the lower end of the end sleeve (3). The first air outlet (13) is connected to the second air inlet (10).

2. The back air inlet structure of a hot air circulating furnace according to claim 1, characterized in that: The first base frame (1) has two air outlets (14) on both sides of the middle part, and the second air outlets (14) are connected to the fan (5).

3. The back air inlet structure of a hot air circulating furnace according to claim 1, characterized in that: A limiting sleeve (8) is fixedly connected to one side of the No. 1 base frame (1), and a connecting hole (9) is provided at each of the four corners of the fan (5). The limiting sleeve (8) is inserted into the connecting hole (9).

4. The back air inlet structure of a hot air circulating furnace according to claim 1, characterized in that: A heating rod (15) is fixedly connected inside the second base frame (2), and a retaining ring (11) is fixedly connected to one side of the second base frame (2). The retaining ring (11) is inserted into the first base frame (1).

5. The back air inlet structure of a hot air circulating furnace according to claim 1, characterized in that: The end of the end sleeve (3) is provided with a cover plate (4), and a second retaining ring (12) is fixedly connected to one end of the cover plate (4) near the end sleeve (3). The second retaining ring (12) is inserted into the end sleeve (3).

6. The back air inlet structure of a hot air circulating furnace according to claim 5, characterized in that: The end sleeve (3) is provided with a dust filter frame (7), which is inserted into the first air inlet (6), and the end face of the second retaining ring (12) is in contact with the dust filter frame (7).

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