Air duct circulation and heat conduction heating cabinet

Abstract

The utility model discloses an air duct circulation and heat conduction heating cabinet, which relates to the technical field of heating cabinet manufacturing and comprises a cabinet body, a heat preservation bin is arranged above the cabinet body, a heating fan is additionally arranged below the cabinet body, the output end of the heating fan is communicated with the heat preservation bin through a heat exchange cavity, and the bottoms of the front end and the rear end of the heat preservation bin are respectively provided with an air return port and an air outlet. An opening and closing door plate is hinged to the back of the heat preservation bin, a flow equalizing box clamped into the heat preservation bin is integrated on the opening and closing door plate, the bottom of the flow equalizing box communicates with the air outlet, an air blocking hole plate is arranged on the lower portion of the inner side of the flow equalizing box, and a grating net is arranged on the side, facing the heat preservation bin, of the flow equalizing box. The subsequent cargo taking and placing steps are reduced, and after the opening and closing door plate is closed, automatic alignment of an air inlet of the opening and closing door plate and an air outlet of the heat exchange cavity and the flow equalizing effect of air channel circulation can be achieved; the heating wires are additionally arranged at the bottoms of the storage plates, so that goods are subjected to the hot air effect and the abutting conduction heating effect of the heating wires at the same time.

Description

Technical Field

[0001] This application relates to the field of heating cabinet manufacturing technology, and in particular to a heating cabinet with air duct circulation and heat conduction. Background Technology

[0002] Heated display cases are an indispensable piece of equipment in the modern catering industry. In the baking industry, they are widely used in bakeries, cake shops, and various baking workshops. Their main function is to maintain the temperature and texture of baked goods, ensuring that freshly baked bread, cakes, desserts, etc., are presented to customers in their best condition. For keeping cooked food warm, heated display cases are also an ideal choice for fast food restaurants, convenience stores, supermarket deli sections, and various catering establishments. They can maintain the temperature and flavor of cooked foods such as roast chicken, roast duck, braised meat, and bento boxes for extended periods, meeting customers' needs for hot food that can be eaten immediately. The display function of heated display cases is also noteworthy; the transparent glass door design and internal lighting not only make it easier for customers to visually select food but also enhance the overall dining experience.

[0003] Most heated cabinets on the market today rely on bottom heating plates to heat goods, but the heat is too concentrated in the bottom area, resulting in extremely uneven heat distribution in the vertical direction. To solve this problem, some designs consider adding side heating plates. However, this often sacrifices the aesthetics and intuitiveness of the goods displayed inside the heated cabinet, as the installation of side heating elements may obstruct the view or disrupt the overall aesthetic layout. On the other hand, using a hot air circulation system to heat the goods all over, while theoretically improving the uniformity of heating, is problematic because the back of the heated cabinet is usually designed with an opening for easy access and placement of goods. Therefore, during the hot air circulation process, once the cabinet door is opened, the strong hot air may blow directly on the staff, causing discomfort. In addition, when the hot air is transmitted upwards and passes through each shelf, the high air speed often makes it difficult to ensure that each shelf receives a uniform and suitable heating effect, especially when the shelf spacing is large or the goods are densely placed, this uneven heating phenomenon is particularly obvious. Summary of the Invention

[0004] This device provides an air duct circulation and heat conduction heating cabinet, the specific implementation of which is as follows:

[0005] A duct circulation and heat conduction heating cabinet, comprising:

[0006] The cabinet has an insulated compartment at the top for placing goods, and a heating fan at the bottom, with the output of the heating fan connected to the insulated compartment through a heat exchange chamber.

[0007] The bottom of the front and rear ends of the insulation chamber are respectively set as return air inlets and air outlets that communicate with the heat exchange chamber;

[0008] The front of the insulated compartment is a transparent cover, and the back is hinged with an opening and closing door panel. An air distribution box that is inserted into the insulated compartment is integrated on the opening and closing door panel. The bottom of the air distribution box is connected to the air outlet. Several air baffles are arranged vertically on the lower inner side of the air distribution box. The side of the air distribution box facing the insulated compartment is equipped with a grid. The grid and air baffles improve the vertical and horizontal uniformity of air circulation. Integrating the air distribution box into the opening and closing door panel facilitates the subsequent loading and unloading of goods. Filters are installed at both the return air vent and the air outlet.

[0009] Based on the above technical solutions, by integrating the flow equalization box into the opening and closing door panel, the subsequent cargo handling process is simplified, greatly improving work efficiency. Once the opening and closing door panel is closed, the inlet of the flow equalization box on the opening and closing door panel is automatically aligned with the air outlet of the heat exchange chamber, which not only optimizes the airflow path but also ensures the efficient operation of hot air circulation. The grid of the flow equalization box has a uniform mesh structure, which can improve the uniformity of hot air entering the insulated chamber.

[0010] Preferably, the insulated compartment has several vertically arranged shelves for placing goods, and each shelf is equipped with a heating wire.

[0011] Based on the above technical solution, by installing heating wires at the bottom of each shelf, it is ensured that the goods can be heated simultaneously by the hot air circulation and the direct conduction of the heating wires, so that the goods can enjoy a synchronous and balanced heat effect from top to bottom, which greatly improves the heat uniformity of the goods.

[0012] Preferably, a flow equalization cavity is formed between the opening and closing door panel and the flow equalization box, and an air inlet opening is provided at the bottom of the flow equalization cavity, with the air inlet opening corresponding to the air outlet.

[0013] Preferably, the width of the air outlet is less than the length of the flow equalization box inserted into the insulation chamber.

[0014] Based on the above technical solutions, the width of the air outlet is designed to be less than the length of the flow equalization box inserted into the insulation chamber, ensuring that the air blown out from the air outlet can be smoothly and without leakage through the bottom of the flow equalization box. In order to further enhance the airflow sealing and guidance, a sealing ring can be added between the bottom of the flow equalization box and the air outlet. This sealing ring can not only effectively prevent airflow leakage, but also improve the insulation performance of the entire system and the uniform distribution of airflow.

[0015] Preferably, the air-blocking orifice plate is obliquely disposed in the lower part of the flow equalization cavity of the flow equalization box.

[0016] Preferably, the bottom of the cabinet has an independent storage compartment with a side-opening door structure.

[0017] Preferably, the bottom of the cabinet is adjacent to the storage compartment, where the heating unit compartment is used to house the heating element of the heating fan.

[0018] Preferably, the back of the insulated compartment is equipped with opening and closing door panels on both sides, and the outer end face of the door is equipped with a handle.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] 1. This utility model reduces the steps for subsequent loading and unloading of goods by integrating the flow equalization box into the opening and closing door panel. After the opening and closing door panel is closed, the air inlet of the opening and closing door panel and the air outlet of the heat exchange chamber can be automatically aligned and the airflow equalization function of the air duct circulation can be achieved.

[0021] 2. By adding heating wires to the bottom of each shelf, the goods are simultaneously heated by hot air and by the contact conduction of the heating wires. The simultaneous heating from top to bottom further improves the uniformity of the heating of the goods.

[0022] 3. This utility model has a simple structure. By vertically arranging several air baffles on the lower inner side of the flow equalization box, the outflow speed of hot air in the heat exchange chamber can be slowed down, thereby improving the uniformity of the vertical heat conduction airflow in the flow equalization box. Attached Figure Description

[0023] Figure 1 This is a side view of the structure of this utility model. Figure 1 ;

[0024] Figure 2 This is a side view of the structure of this utility model. Figure 2 ;

[0025] Figure 3 This is a cross-sectional view of the side structure of this utility model;

[0026] Figure 4 This is a cross-sectional view of the right side structure of this utility model;

[0027] Figure 5 This is a structural schematic diagram of the flow equalization box and the opening and closing door panel of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Cabinet body, 2. Shelves, 3. Air distribution box, 4. Heating fan, 5. Door panel, 6. Air baffle plate, 7. Heating wire.

[0030] 101. Storage compartment; 102. Air outlet; 103. Heat exchange chamber; 104. Insulation compartment; 105. Return air outlet; 106. Heating unit room; 301. Air inlet; 302. Grille; 501. Handle. Detailed Implementation

[0031] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples:

[0032] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0033] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0034] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail.

[0035] This application discloses an air duct circulation and heat conduction heating cabinet.

[0036] Example 1

[0037] Reference Figures 1 to 5 This embodiment discloses a duct circulation and heat conduction heating cabinet, including a cabinet body 1. A heat-insulating compartment 104 for placing goods is located above the cabinet body 1. A heating fan 4 is installed below the cabinet body 1, and the output end of the heating fan 4 is connected to the heat-insulating compartment 104 through a heat exchange chamber 103. The bottom of the front and rear ends of the heat-insulating compartment 104 are respectively provided with a return air inlet 105 and an air outlet 102 communicating with the heat exchange chamber 103. The front of the heat-insulating compartment 104 is a transparent cover, and an opening and closing door 5 is hinged to its back. The upper part is integrated with a flow equalization box 3 that is inserted into the heat preservation chamber 104. The bottom of the flow equalization box 3 is connected to the air outlet 102. Several air baffle plates 6 are provided on the lower inner side of the flow equalization box 3 along its vertical direction. The side of the flow equalization box 3 facing the heat preservation chamber 104 is provided with a grid 302. The vertical and horizontal uniformity of air circulation is improved by the grid 302 and the air baffle plates 6. Integrating the flow equalization box 3 into the opening and closing door panel 5 facilitates the subsequent loading and unloading of goods. In this structure, the air baffle plates 6 are obliquely arranged in the lower part of the flow equalization cavity of the flow equalization box 3.

[0038] A flow equalization cavity is formed between the opening and closing door panel 5 and the flow equalization box 3, and an air inlet opening 301 is provided at the bottom of the flow equalization cavity. The air inlet opening 301 corresponds to the air outlet 102. In this structure, the width of the air outlet 102 is less than the length of the flow equalization box 3 inserted into the heat preservation chamber 104.

[0039] The bottom of the cabinet 1 is provided with an independent storage compartment 101, which has a side-opening door structure. The bottom of the cabinet 1 is adjacent to the storage compartment 101 and the heating unit compartment 106 is used to place the heating body of the heating fan 4. In this structure, the back of the heat preservation compartment 104 is provided with opening and closing door panels 5 on both sides, and the outer end face of the panel is provided with handles 501.

[0040] Example 2

[0041] Reference Figures 1 to 4 Based on the above embodiments, this embodiment also discloses an air duct circulation and heat conduction heating cabinet, in which four vertically equidistant storage plates 2 for placing goods are provided in the heat preservation chamber 104, and each storage plate 2 is equipped with a heating wire 7.

[0042] The specific implementation process is as follows: When heat-treating goods, the heating wire 7 is activated to heat the bottom of the goods; the heating fan 4 is activated to heat the gas in the insulation chamber 104 and the heat exchange chamber 103 and generate circulation flow; the gas is led out from the air outlet 102 and enters the flow equalization box 3, and after vertically impacting the wind baffle plate 6, it generates a deceleration effect. The installation height of the wind baffle plate 6 is determined by multiple experiments; so that the hot air enters each shelf 2 evenly through the mesh of the grid 302 at each height for hot air treatment of the goods.

[0043] Example 3

[0044] Reference Figures 1 to 5 Based on the above embodiments, this embodiment also discloses an air duct circulation and heat conduction heating cabinet, which also includes a controller. The controller is electrically connected to the heating wire 7 and the heating fan 4. A limit switch electrically connected to the controller is installed in the heat preservation chamber 104. When the door panel 5 is closed, it abuts against the limit switch, and the limit switch is disconnected from the trigger. In this structure, the heating fan 4 is turned off when the limit switch is triggered. The heating fan 4 is a conventional structure to prevent hot air from blowing on the staff during the handling of goods.

[0045] Many other changes and modifications can be made without departing from the concept and scope of this utility model. It should be understood that this utility model is not limited to the specific embodiments, and the scope of this utility model is defined by the appended claims.

Claims

1. A heating cabinet with air circulation and heat conduction, characterized in that, include: Cabinet (1), the upper part of the cabinet (1) is set as a heat preservation compartment (104) for placing goods, the lower part of the cabinet (1) is equipped with a heating fan (4), and the output end of the heating fan (4) is connected to the heat preservation compartment (104) through a heat exchange chamber (103); The bottom of the front and rear ends of the heat-insulating chamber (104) are respectively provided as return air inlets (105) and air outlets (102) communicating with the heat exchange chamber (103); The front of the insulated compartment (104) is provided with a transparent cover, and the back of the compartment is hinged with an opening and closing door panel (5). The opening and closing door panel (5) is integrated with a flow equalization box (3) that is inserted into the insulated compartment (104). The bottom of the flow equalization box (3) is connected to the air outlet (102). Several wind-blocking perforated plates (6) are provided on the lower inner side of the flow equalization box (3) along its vertical direction. The side of the flow equalization box (3) facing the insulated compartment (104) is provided with a grid mesh (302). The vertical and horizontal uniformity of the air circulation is improved by the grid mesh (302) and the wind-blocking perforated plates (6). Integrating the flow equalization box (3) into the opening and closing door panel (5) facilitates the subsequent loading and unloading of goods.

2. The air duct circulation and heat conduction heating cabinet according to claim 1, characterized in that, The insulated compartment (104) is vertically provided with several storage boards (2) for placing goods, and each storage board (2) is equipped with a heating wire (7).

3. The air duct circulation and heat conduction heating cabinet according to claim 2, characterized in that, A flow equalization cavity is formed between the opening and closing door panel (5) and the flow equalization box (3), and an air inlet opening (301) is provided at the bottom of the flow equalization cavity, the air inlet opening (301) corresponding to the air outlet (102).

4. The air duct circulation and heat conduction heating cabinet according to claim 3, characterized in that, The width of the air outlet (102) is less than the length of the flow equalization box (3) inserted into the heat preservation chamber (104).

5. The air duct circulation and heat conduction heating cabinet according to claim 3, characterized in that, The wind-blocking orifice plate (6) is obliquely disposed at the lower part of the flow equalization chamber of the flow equalization box (3).

6. The air duct circulation and heat conduction heating cabinet according to claim 1, characterized in that, The cabinet (1) has an independent storage compartment (101) at the bottom, and the storage compartment (101) has a side-opening door structure.

7. The air duct circulation and heat conduction heating cabinet according to claim 6, characterized in that, The bottom of the cabinet (1) is adjacent to the storage compartment (101) and contains a heating unit chamber (106), which is used to house the heating body of the heating fan (4).

8. The air duct circulation and heat conduction heating cabinet according to claim 1, characterized in that, The insulated compartment (104) is provided with opening and closing door panels (5) on both sides of its back, and a handle (501) is provided on its outer end face.

9. The air duct circulation and heat conduction heating cabinet according to claim 1, characterized in that, Both the return air inlet (105) and the air outlet (102) are equipped with filters.

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