An air curtain cabinet with a double-air duct circulating air outlet structure and its operation method

Abstract

The present invention discloses an air curtain cabinet with a double-air duct circulating air outlet structure and its operation method, specifically relating to the field of double-air curtain air curtain cabinets. The air curtain cabinet includes an air curtain cabinet body, an inner back plate, an inner top plate, a back air baffle, a top air baffle, a double-air duct top air distribution plate, a baffle, an upper cover plate of the outer air duct, a side cover plate of the outer air duct, and an intermediate cover plate of the outer air duct. A part of the cold air generated by the fan passes through the space formed by the back air baffle and the inner back plate, flows through the top air baffle and the double-air duct top air distribution plate, and enters the inner air duct of the double-air duct; another part of the cold air passes through the upper cover plate of the outer air duct, the side cover plate of the outer air duct, and the intermediate cover plate of the outer air duct, passes through the inner top plate and the double-air duct top air distribution plate, and enters the outer air duct of the double-air duct, thereby forming a stable double-layer air curtain for circulating air outlet. Adding an air curtain can improve the temperature isolation performance between the internal and external environments, improve the fresh-keeping effect of the air curtain cabinet, and the double-air duct air outlet structure can achieve the purpose of reducing energy consumption.

Description

Technical Field

[0001] The present invention relates to the field of air curtain cabinets, and specifically relates to an air curtain cabinet with a double-air duct circulating air outlet structure and an operation method thereof. Background Art

[0002] Most of the air outlet ducts of the current air curtain cabinets on the market use a single-air duct air outlet structure. When working, a single air curtain is formed by circulation. For ordinary single-air duct air curtain structures and their products, the air curtain is easily affected by the external environment during actual use. Once the external temperature is very high or the air curtain fails, the air curtain cabinet will have problems such as non-cooling or poor cooling effect, resulting in poor refrigeration and preservation effects and affecting the product preservation function. At the same time, the operation of a single-air curtain cabinet requires more power consumption to increase the energy efficiency of the air curtain cabinet. Simply adjusting the angle of the air curtain outlet and other methods cannot effectively solve the problem of weak cooling effect of the single air curtain.

[0003] In view of the above problems, the present invention improves the single-air duct air outlet structure into a double-air duct air outlet structure, adds an air curtain on the basis of the original ordinary single-air duct air curtain product, improves the temperature isolation performance between the internal and external environments, and the double-air duct air outlet structure can achieve the purpose of reducing energy consumption while improving the preservation effect of the air curtain cabinet. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and provides an air curtain cabinet with a double-air duct circulating air outlet structure and an operation method thereof. The specific technical solutions are as follows:

[0005] An air curtain cabinet with a double-air duct circulating air outlet structure includes an air curtain cabinet body. An inner back plate and an inner top plate are respectively arranged on the inner side of the rear wall and the inner side of the upper top wall of the cabinet cavity of the air curtain cabinet body; a baffle is fixedly arranged at the front end of the inner top plate; a back wind plate is arranged in front of the inner back plate, and the lower end of the back wind plate inclines forward;

[0006] The cabinet cavity of the air curtain cabinet body further includes a top wind plate, a double-air duct top air distribution plate, two outer air duct upper covers, two outer air duct side covers and an outer air duct middle cover; the rear end of the top wind plate is fixedly connected to the top end of the back wind plate, and the front end inclines upward; the rear end of the double-air duct top air distribution plate is vertically fixed on the inner back plate; the outer air duct side covers are L-shaped and are longitudinally symmetrically arranged on the left and right sides of the inner back plate respectively; the outer air duct upper covers are L-shaped structures and are longitudinally arranged at the top ends of the left and right outer air duct side covers respectively; the outer air duct middle cover is a U-shaped structure with an opening downward and is longitudinally arranged at the middle position of the inner back plate;

[0007] The longitudinal air duct formed between the back wind plate and the inner back plate and the transverse air duct formed between the top wind plate and the double-air duct top air distribution plate are connected to form an inner air duct;

[0008] The three longitudinal air ducts formed between the upper cover plate of the outer air duct, the side cover plate of the outer air duct, the middle cover plate of the outer air duct, and the inner back plate are connected to the transverse air duct formed between the inner top plate, the air distribution plate at the top of the double air duct, and the baffle to form the outer air duct.

[0009] Preferably, the side plates of the upper cover plate of the outer air duct, the side cover plate of the outer air duct, and the middle cover plate of the outer air duct are all provided with transverse connecting flanges, and fixed mounting holes are provided on the flanges;

[0010] The upper cover plate of the outer air duct and the side cover plate of the outer air duct are fixedly connected to the inner back plate and the side wall of the air curtain cabinet body through the flanges;

[0011] The middle cover plate of the outer air duct is fixedly connected to the inner back plate through the flange;

[0012] Preferably, the lower opening of the side cover plate of the outer air duct is larger than the upper opening; the upper opening of the upper cover plate of the outer air duct is larger than the lower opening.

[0013] The air distribution plate at the top of the double air duct is located between the inner top plate and the top air baffle.

[0014] Preferably, the front ends of the top air baffle and the air distribution plate at the top of the double air duct are both provided with downwardly inclined bending parts.

[0015] Preferably, the outlet angle of the outer air duct is larger than the outlet angle of the inner air duct.

[0016] An operation method of an air curtain cabinet with a double air duct circulating air outlet structure, specifically: a part of the cold air generated by the fan enters the inner air duct of the double air duct, passes through the space formed by the back air baffle and the inner back plate, rises closely along the inner back plate, and flows through the top air baffle and the air distribution plate at the top of the double air duct to form the inner air curtain; another part of the cold air generated by the fan enters the outer air duct of the double air duct, does not pass through the back air baffle, but passes through the three longitudinal air ducts formed by the upper cover plate of the outer air duct, the side cover plate of the outer air duct, the middle cover plate of the outer air duct, the inner back plate, and the side wall of the air curtain cabinet body, flows through the inner top plate and the air distribution plate at the top of the double air duct, and forms the outer air curtain downward through the baffle, and then circulates the air outlet, thereby forming two stable air curtains.

[0017] The present invention has the following beneficial effects:

[0018] The double air duct circulates the air outlet to form a double-layer air curtain. The air speed of the air curtain can be adjusted by adjusting the angles of the air outlet and the baffle. At the same time, the outer air curtain passes through the evaporator copper tube, and the temperature of the air curtain rises, which can reduce the influence of the external environment temperature; the inner air curtain is mainly used for refrigeration and cold storage, and the outer air curtain is mainly used to isolate the external environment, so as to improve the refrigeration effect well, extend the fresh-keeping time of food on the air curtain cabinet, and highlight the advantages of double air curtain circulation fresh-keeping refrigeration. In addition, the double air duct air outlet structure can also achieve the purpose of reducing the energy consumption of the air curtain cabinet. Description of the Drawings

[0019] The attached drawings forming part of this application are used to provide a further understanding of this application and do not unduly limit this application.

[0020] Figure 1 It is a schematic cross-sectional structure diagram of the present invention;

[0021] Figure 2 It is a schematic internal structure diagram of the windward plate of the present invention;

[0022] Figure 3 It is a schematic structure diagram of the upper cover plate of the outer air duct, the side cover plate of the outer air duct and the middle cover plate of the outer air duct.

[0023] In the figures:

[0024] 1 - wind curtain cabinet body; 2 - windward plate; 3 - inner back plate; 4 - inner top plate; 5 - top wind plate; 6 - double air duct top air distribution plate; 7 - baffle; 8 - upper cover plate of the outer air duct; 9 - side cover plate of the outer air duct; 10 - middle cover plate of the outer air duct; 11 - inner air duct; 12 - outer air duct. Detailed Description of the Invention

[0025] The following further describes the present invention in conjunction with the attached Figures 1-3 description.

[0026] A wind curtain cabinet with a double air duct circulating air outlet structure includes a wind curtain cabinet body (1), and an inner back plate (3) and an inner top plate (4) are respectively fixedly arranged on the inner side of the rear wall and the inner side of the upper top wall of the cabinet cavity of the wind curtain cabinet body (1); a windward plate (2) is arranged in front of the inner back plate (3), and the lower end of the windward plate (2) inclines forward;

[0027] The cabinet cavity of the wind curtain cabinet body (1) further includes a top wind plate (5), a double air duct top air distribution plate (6), two upper cover plates (8) of the outer air duct, two side cover plates (9) of the outer air duct and a middle cover plate (10) of the outer air duct. Among them, the rear end of the top wind plate (5) is fixedly connected to the top end of the windward plate (2), and the front end inclines upward; the rear end of the double air duct top air distribution plate (6) is vertically fixed on the inner back plate (3), and the double air duct top air distribution plate (6) is located between the inner top plate (4) and the top wind plate (5);

[0028] Preferably, the front ends of the top wind plate (5) and the double air duct top air distribution plate (6) are both provided with downwardly inclined bent portions; a baffle (7) is fixedly arranged at the front end of the inner top plate (4); wherein, the bent portions and the baffle (7) are both used to adjust the angle of the air outlet, thereby changing the flow rate of the wind curtain.

[0029] Specifically, the inner air duct (11) is formed by connecting a longitudinal air duct formed between the windward plate (2) and the inner back plate (3), and a transverse air duct formed between the top wind plate (5) and the double-air-duct top air distribution plate (6); the outer air duct (12) is formed by connecting three longitudinal air ducts formed between the upper cover plate of the outer air duct (8), the side cover plate of the outer air duct (9), the middle cover plate of the outer air duct (10), and the inner back plate (3), and a transverse air duct formed among the inner top plate (4), the double-air-duct top air distribution plate (6), and the baffle (7).

[0030] Preferably, the side plate edges of the upper cover plate of the outer air duct (8), the side cover plate of the outer air duct (9), and the middle cover plate of the outer air duct (10) are all provided with laterally-connected flanges, and fixed installation holes are provided on the flanges for installation and fixation.

[0031] The side cover plate of the outer air duct (9) has an L-shaped structure and is longitudinally symmetrically arranged on the left and right sides of the inner back plate (3); the upper cover plate of the outer air duct (8) has an L-shaped structure and is longitudinally connected to the tops of the left and right side cover plates of the outer air duct (9); the middle cover plate of the outer air duct (10) has a U-shaped structure with an opening downward and is longitudinally arranged in the middle position of the inner back plate (3);

[0032] The upper cover plate of the outer air duct (8) and the side cover plate of the outer air duct (9) are bolt-fixedly connected to the inner back plate (3) and the side wall of the air curtain cabinet body (1) through the fixed installation holes on the flanges; the middle cover plate of the outer air duct (10) is bolt-fixedly connected to the inner back plate (3) through the fixed installation holes on the flanges;

[0033] From attachment Figure 1 and attachment Figure 3 It can be seen that the sides of the two side cover plates of the outer air duct (9) have a right trapezoidal structure, and the lower opening of the side cover plate of the outer air duct (9) is larger than the upper opening; the sides of the two upper cover plates of the outer air duct (8) have an inverted right trapezoidal structure, and the upper opening of the upper cover plate of the outer air duct (8) is larger than the lower opening.

[0034] Preferably, the angle of the air outlet of the outer air duct (12) is greater than the angle of the air outlet of the inner air duct (11), so that the air speed of the inner air duct (11) is greater than the air speed of the outer air duct (12), and a better fresh-keeping effect can be achieved.

[0035] An operating method of a air curtain cabinet with a double-air duct circulating air outlet structure, using the above-mentioned air curtain cabinet with a double-air duct circulating air outlet structure, specifically including: A part of the cold air generated by the fan passes through the space formed by the back air plate (2) and the inner back plate (3), rises closely along the inner back plate (3), flows through the top air plate (5) and the double-air duct top air distribution plate (6), and enters the inner air duct (11) of the double-air duct to form an inner air curtain; Another part of the cold air generated by the fan does not pass through the back air plate (2), but passes through three longitudinal air ducts formed by the upper cover plate (8) of the outer air duct, the outer side air duct cover plate (9), the middle cover plate (10) of the outer air duct and the side wall and the inner back plate (3) of the air curtain cabinet body (1), and then flows into the space between the inner top plate (4) and the double-air duct top air distribution plate (6), enters the outer air duct (12) of the double-air duct, and forms an outer air curtain downward after the direction is adjusted by the baffle (7), and performs circulating air outlet, so as to form two stable air curtains.

[0036] The present invention forms a double-layer air curtain with different wind speeds and temperatures for circulating air outlet by changing the structure of a common single-air duct air curtain cabinet. By using the different air outlet angles of the inner air duct (11) and the outer air duct (12) and the diversion angle of the baffle, the flow rates of the two air curtains generated are also different; Among them, when the outer air curtain circulates, it passes through the evaporator copper tube, and its temperature is higher than that of the inner air curtain, which is mainly used to isolate the influence of the external environment, while the inner air curtain is mainly used for refrigeration and cold storage.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] In the present invention, terms such as "upper", "lower", "bottom", "top", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only relational terms determined for the convenience of describing the structural relationship of each component or element of the present invention, and do not specifically refer to any component or element in the present invention, and should not be construed as a limitation to the present invention.

[0039] In the present invention, terms such as "connected" and "connected" should be understood in a broad sense, which may mean a fixed connection, an integral connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances, and should not be construed as a limitation to the present invention.

[0040] Certainly, although the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, it is not a limitation of the present invention. The present invention is not limited to the above examples either. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. An air curtain cabinet with a double-air duct circulating air outlet structure, comprising an air curtain cabinet body, characterized in that, On the inner side of the rear wall and the inner side of the upper top wall of the cabinet cavity of the air curtain cabinet, an inner back plate and an inner top plate are respectively provided; a baffle is fixedly arranged at the front end of the inner top plate; in front of the inner back plate, a back wind plate is arranged, and the lower end of the back wind plate inclines forward; The cabinet cavity of the air curtain cabinet further includes a top wind plate, a double-air-channel top air distribution plate, two outer air-channel upper covers, two outer air-channel side covers and an outer air-channel middle cover; the rear end of the top wind plate is fixedly connected to the top end of the back wind plate, and the front end inclines upward; the rear end of the double-air-channel top air distribution plate is vertically fixed on the inner back plate; the outer air-channel side covers are L-shaped and are symmetrically arranged longitudinally on the left and right sides of the inner back plate respectively; the outer air-channel upper covers are L-shaped structures and are longitudinally arranged at the top ends of the left and right outer air-channel side covers respectively; the outer air-channel middle cover is a U-shaped structure with an opening downward and is longitudinally arranged at the middle position of the inner back plate; The longitudinal air channel formed between the back wind plate and the inner back plate and the transverse air channel formed between the top wind plate and the double-air-channel top air distribution plate are connected to form an inner air channel; The three longitudinal air channels formed between the outer air-channel upper cover, the outer air-channel side cover, the outer air-channel middle cover and the inner back plate and the transverse air channel formed between the inner top plate, the double-air-channel top air distribution plate and the baffle are connected to form an outer air channel; The side plates of the outer air-channel upper cover, the outer air-side channel cover and the outer air-channel middle cover are all provided with transverse connecting flanges, and fixing mounting holes are arranged on the flanges; The outer air-channel upper cover and the outer air-side channel cover are fixedly connected to the inner back plate and the side wall of the air curtain cabinet through the flanges; The outer air-channel middle cover is fixedly connected to the inner back plate through the flange; The side surfaces of the two outer air-channel side covers are right-angled trapezoid structures, and the lower opening of the outer air-channel side cover is larger than the upper opening; the side surfaces of the two outer air-channel upper covers are inverted right-angled trapezoid structures, and the upper opening of the outer air-channel upper cover is larger than the lower opening.

2. The air curtain cabinet with a double-air duct circulating air outlet structure according to claim 1, wherein, The double-air-channel top air distribution plate is located between the inner top plate and the top wind plate.

3. The air curtain cabinet with a double-air duct circulating air outlet structure according to claim 1 or 2, characterized in that, The front ends of the top wind plate and the double-air-channel top air distribution plate are both provided with downwardly inclined bending parts.

4. A air curtain cabinet with a double-air duct circulating air outlet structure according to claim 1, characterized in that, The air outlet angle of the outer air channel is greater than the air outlet angle of the inner air channel.

5. The operation method of an air curtain cabinet with a double-air duct circulating air outlet structure according to any one of claims 1 to 4, characterized in that, A part of the cold air generated by the fan enters the inner air channel of the double air channels, passes through the space formed by the back wind plate and the inner back plate, rises closely along the inner back plate, flows through the top wind plate and the double-air-channel top air distribution plate to form an inner air curtain; another part of the cold air generated by the fan enters the outer air channel of the double air channels, does not pass through the back wind plate, but passes through the three longitudinal air channels formed by the outer air-channel upper cover, the outer air-side channel cover, the outer air-channel middle cover and the inner back plate and the side wall of the air curtain cabinet, flows through the inner top plate and the double-air-channel top air distribution plate, passes through the baffle and forms an outer air curtain downward, and then circulates for air outlet, so as to form two stable air curtains.

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