Oven airflow circulating device

Abstract

The utility model discloses an oven airflow circulating device which comprises a left box body, one side of the left box body is fixedly connected with a right box body, an inner cavity of the left box body and an inner cavity of the right box body are fixedly provided with an oven inner container, the two sides of the oven inner container are respectively provided with an exhaust fan, and the two exhaust fans are communicated through a pipeline. An annular space is formed by the oven inner container, the exhaust fans on the two sides and the communicating pipeline, the main control circuit board controls starting and stopping of the exhaust fans and the air speed to enable air in the oven to flow from left to right and from right to left sometimes, air flow flows back and forth without dead angles, and food materials are evenly heated in the whole baking time. The stepped pressure gradient is formed in the inner container of the oven to drive air to circulate, the flow rate of air in the oven is more uniform without dead corners, the flow range of the air is wider, the situation that food materials are mutually blocked is better handled, and meanwhile, the draft fan can drive the air in a larger range to flow in a renewal mode through the smaller size.

Description

TECHNICAL FIELD

[0001] The utility model relates to an oven technical field, concretely is a kind of oven airflow circulation device. BACKGROUND

[0002] Oven is the kitchen appliance for baking food, usually it is by using electric energy to generate heat, then by the way of convection or hot air circulation to transfer heat to the food in the oven, so that it is heated evenly and reaches the effect of baking, in order to improve the working efficiency of oven, many oven inside is equipped with grouping and divided shelf, can place multiple layers and multiple groups of food material, but seemingly improve efficiency, actually due to food material mutual blocking heat source and hot air flow will cause different position food material quality difference is larger.

[0003] The existing oven is installed with fan, and the air direction is blown to the inside of the box body. After the food is placed in the box body, the food will block the air direction. If the food is placed in multiple layers and multiple groups, the food far from the air outlet will be blocked, and the food close to the air outlet will have large wind power, so the moisture of the food will be lost quickly. The food far from the air outlet will have small wind power, so the moisture of the food will be lost slowly. This way has the disadvantages of small wind power range and large wind speed difference at different positions. In addition, in a large-size box body, a larger fan size or more fans are needed. Therefore, we need to provide an oven airflow circulation device. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an oven airflow circulation device to solve the problems in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An oven airflow circulation device includes a left box body, a right box body is fixedly connected to one side of the left box body, an oven liner is fixedly installed in the inner cavities of the left box body and the right box body, an air duct circulation assembly is arranged on the side wall of the oven liner, two air outlet ends of the air duct circulation assembly are respectively communicated with the inside of the oven liner, and a line distribution board is installed on one side of the oven liner.

[0007] Preferably, the air duct circulation assembly includes a machine body right fan, the machine body right fan is installed on one side of the side wall of the oven liner, an exhaust fan communication pipeline is fixedly connected to the machine body right fan, and a machine body left fan is fixedly connected to the end of the exhaust fan communication pipeline away from the machine body right fan.

[0008] Preferably, two side walls of the oven liner are respectively provided with through grooves, and the machine body right fan and the machine body left fan are respectively fixedly embedded in the inside of the two groups of through grooves.

[0009] Preferably, the right box body is internally fixedly installed with a main control circuit board, the main control circuit board is fixedly connected with a right fan wire, and the right fan wire is electrically connected with a right fan of the machine body at an end away from the main control circuit board.

[0010] Preferably, the left fan wire is electrically connected with the main control circuit board at one end, and electrically connected with a left fan of the machine body at the other end.

[0011] Preferably, the oven liner is fixedly connected with a connecting piece on one side wall, the collecting plate is fixedly connected with the connecting piece, and the right fan wire and the left fan wire are arranged in the collecting plate.

[0012] Preferably, the right box body is fixedly installed with a buzzer on one side wall, and the main control circuit board is electrically connected with the buzzer.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a two-sided installation of one extraction fan in the oven liner, and the two extraction fans are communicated by a pipeline, and the oven liner and the two extraction fans and the communicating pipeline together form a ring space, the start and stop and the air speed of the extraction fan are controlled through the main control circuit board, the gas in the oven liner flows from left to right and right to left alternately, the air current flows back and forth without a dead angle, the food material is uniformly heated in the whole baking time, the air circulation is driven by the step pressure gradient formed in the oven liner due to the adoption of the extraction fan, the gas flow speed in the oven is more uniform and has no dead angle, the gas flow range is wider, and the situation that the food materials mutually shield each other can be better coped with, simultaneously, the extraction fan can realize a smaller size to drive the renewal flow of a larger range of gas. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the bottom view of the utility model;

[0016] Figure 2 It is the top view of the utility model;

[0017] Figure 3 It is the side rear view schematic diagram of the utility model;

[0018] Figure 4 It is the display board unit circuit diagram of the utility model;

[0019] Figure 5 It is the processor unit circuit diagram of the utility model;

[0020] Figure 6 It is the buzzer unit circuit diagram of the utility model;

[0021] Figure 7The utility model discloses mainboard interface unit circuit diagram for the utility model;

[0022] Figure 8 The utility model discloses power unit circuit diagram for the utility model;

[0023] Figure 9 The utility model discloses fan control unit circuit diagram for the utility model.

[0024] In the drawing: 1, left box body;2, right box body;3, oven inner container;4, air duct circulation assembly;401, machine body right fan;402, exhaust fan communication pipeline;403, machine body left fan;5, collection board;6, main control circuit board;7, right fan wire;8, left fan wire;9, connecting piece;10, buzzer. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the range of the utility model protection.

[0026] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: a kind of oven airflow circulation device, left box body 1 is fixedly connected with right box body 2 on one side of left box body 1, oven inner container 3 is fixedly installed in the inner chamber of left box body 1 and right box body 2, air duct circulation assembly 4 is arranged on the side wall of oven inner container 3, and the two air outlet ends of air duct circulation assembly 4 are communicated with the inside of oven inner container 3 respectively, and collection board 5 is installed on one side of oven inner container 3.

[0027] The utility model can realize the organic integration of heating pipe and slot position working condition, each heating pipe is controlled temperature separately to ensure that each slot position temperature is up to standard, and the system automatically distributes required heating pipe work according to slot position opening state, realizes the non-contact type slot position drawer frame insertion state detection, makes the timing function of barbecue machine realize automatic opening and closing, improves man-machine work efficiency and machine life, and oven machine body uses alternate negative pressure airflow circulation, realizes that the temperature of oven is even in each direction, realizes meal quality stability;

[0028] Specifically, air duct circulation assembly 4 includes machine body right fan 401, machine body right fan 401 is installed on the side wall of one side of oven inner container 3, and exhaust fan communication pipeline 402 is fixedly communicated on machine body right fan 401, and the end, away from machine body right fan 401, of exhaust fan communication pipeline 402 is fixedly communicated with machine body left fan 403.

[0029] Both the right fan 401 and the left fan 403 of the oven body are set as exhaust fans. These two exhaust fans are connected by a duct. The oven liner 3, the exhaust fans on both sides and the connecting duct together form a ring space. The main control circuit board 6 controls the start and stop of the exhaust fans and the wind speed, so that the gas in the oven flows from left to right and from right to left, so that the airflow flows back and forth without dead corners, and the food is heated evenly throughout the baking time.

[0030] Because of the use of an exhaust fan, a stepped pressure gradient is formed in the oven cavity to drive air circulation. The gas flow rate in the oven is more uniform and without dead corners, and the gas flow range is wider, which better copes with the situation where food blocks each other. At the same time, the exhaust fan can achieve a smaller size to drive a larger range of gas renewal flow.

[0031] Furthermore, through slots are provided on both sides of the inner wall of the oven cavity 3. The right fan 401 and the left fan 403 are fixedly embedded in the two sets of through slots. The right fan 401, the exhaust fan connecting pipe 402, the left fan 403 and the inner wall of the oven cavity 3 can form an annular space.

[0032] Furthermore, a main control circuit board 6 is fixedly installed inside the right housing 2. A right fan wire 7 is fixedly connected to the main control circuit board 6. The end of the right fan wire 7 away from the main control circuit board 6 is electrically connected to the right fan 401 of the machine body.

[0033] When the main control circuit board 6 controls the left fan 403 of the oven to be powered on and the right fan 401 of the oven is not powered on, the air inside the oven flows from the oven liner 3 to the left fan 403 of the oven, then to the exhaust fan connecting pipe 402, then to the right fan 401 of the oven, and then back to the inside of the oven liner 3. The air inside the oven liner 3 flows from the right to the left.

[0034] Furthermore, it also includes a left fan wire 8, one end of which is electrically connected to the main control circuit board 6, and the other end of which is electrically connected to the left fan 403 of the machine body.

[0035] When the main control circuit board 6 controls the power supply to the right fan 401 of the oven body and the left fan 403 of the oven body is not powered, the air flow inside the oven flows from the oven liner 3 to the right fan 401 of the oven body, then to the exhaust fan connecting pipe 402, then to the left fan 403 of the oven body, and then back to the inside of the oven liner 3. The air inside the oven liner 3 flows from the left to the right.

[0036] Please see Figures 4-9Further, the side wall of the oven liner 3 is fixedly connected with a connecting piece 9, the wire collecting plate 5 is fixedly connected with the connecting piece 9, and the right fan wire 7 and the left fan wire 8 are arranged in the wire collecting plate 5 respectively, the power circuit unit, the external 220V alternating current is transmitted to the transformer LF2, the bridge BRD1 and the capacitor C14 through the connecting posts ACN, ACL and the fuse F3 to output 12V voltage to the low-voltage stabilizing chip U17 (the example is 78M05) and the low-voltage stabilizing chip U6 (the example is 78M05) and other parts of the circuit to provide 12V power supply, the low-voltage stabilizing chip U17 provides 5V stabilized power supply for the temperature sensor circuit unit and the low-voltage stabilizing chip U5 (the example is ASM1117-3.3V), and the low-voltage stabilizing chip U6 provides 5V stabilized power supply for other parts of the circuit;

[0037] It is worth mentioning that the side wall of the right box body 2 is fixedly installed with a buzzer 10, the main control circuit board 6 is connected with the buzzer 10, the display plate circuit unit, the display chip U2 (the example is TM1629) is connected with the P17 of the main board interface unit 1005 through the interface P18, the P17 is connected with the processor unit 1001 through the U16 (the example is 74HC245), the processor unit 1001 controls the display chip U2 to display and read the key signal detected by the chip U2 through the processing of M_DO, M_DI, M_CLK and M_STB signals, the fan control circuit unit, the control signal of the processor unit controls the load circuit composed of PTF3, PTF4, TRF3 and TRF4 to control the fan AC input to achieve the purpose of controlling the start and stop of the fan, and the switch circuit composed of Q13 and RYF1 controls the AC electrical connection of the fan circuit.

[0038] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An oven air flow circulation device, characterized by, Include: The left box body (1), one side of the left box body (1) is fixedly connected with the right box body (2), and the inner cavities of the left box body (1) and the right box body (2) are fixedly installed with the oven liner (3). The side wall of the oven liner (3) is provided with an air duct circulating assembly (4), and the two air outlet ends of the air duct circulating assembly (4) are respectively communicated with the inside of the oven liner (3).

2. The oven air circulation device of claim 1, wherein: The air duct circulating assembly (4) includes a machine body right fan (401), which is installed on one side of the oven liner (3). The machine body right fan (401) is fixedly connected with an air extractor communication pipeline (402), and the end of the air extractor communication pipeline (402) away from the machine body right fan (401) is fixedly connected with a machine body left fan (403).

3. An oven air circulation device according to claim 2, wherein: The both sides of the oven liner (3) are respectively provided with a through slot, and the machine body right fan (401) and the machine body left fan (403) are respectively fixedly embedded in the inside of the two groups of through slots.

4. The oven air circulation device of claim 3, wherein: The inside of the right box body (2) is fixedly installed with a main control circuit board (6), and the main control circuit board (6) is fixedly connected with a right fan wire (7), and the end of the right fan wire (7) away from the main control circuit board (6) is electrically connected with the machine body right fan (401).

5. An oven air circulation device as claimed in claim 4, wherein: It also includes a left fan wire (8), one end of which is electrically connected with the main control circuit board (6), and the other end of which is electrically connected with the machine body left fan (403).

6. An oven air circulation device according to claim 5, wherein: One side of the oven liner (3) is provided with a collection board (5).

7. An oven air circulation device according to claim 6, wherein: The side wall of the oven liner (3) is fixedly connected with a connecting piece (9), the collection board (5) is fixedly connected with the connecting piece (9), and the right fan wire (7) and the left fan wire (8) are respectively arranged in the inside of the collection board (5).

8. The oven air circulation device of claim 4, wherein: The side wall of the right box body (2) is fixedly installed with a buzzer (10), and the main control circuit board (6) is electrically connected with the buzzer (10).

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