Air curtain cabinet with single air duct and double air curtain structure and operation method thereof

Abstract

The present invention discloses a wind curtain cabinet with a single air duct and double air curtain structure and an operation method thereof, and relates to the field of refrigeration. The present invention forms an air duct with a cross-section approximately in the shape of "7" by a vertical back plate, a vertical leeward plate, a top plate, a top wind plate and a wind shield plate, and the exhaust port at the top faces downward. The cold air generated by the fan passes through the air distributor at the exhaust port and forms two parts with different wind speeds. The slower wind speed enters the cavity formed between the wind shield and the air distributor, and the faster wind speed enters the cavity formed between the air distributor and the top wind plate. The two parts of cold air pass through the honeycomb guide plate to form two wind curtains. The wind speed of the front wind curtain is slower, which is used to block the external heat from entering the cabinet and reduce the energy exchange between the cabinet and the outside world; the wind speed of the rear wind curtain is faster, and the temperature in the cabinet is kept balanced through rapid circulation.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration, and in particular to an air curtain cabinet with a single air duct and double air curtain structure and an operation method thereof. Background Art

[0002] At present, most of the wind curtain cabinets on the market are double-duct double-curtain structures or single-duct single-curtain. Patent document CN213488052U discloses a wind curtain cabinet with double ducts and double curtains. This wind curtain cabinet has two kinds of ducts, namely the outer duct and the inner duct, and both ducts are embedded in the foam layer insulation structure. The outer duct is located at the rear side of the foam layer insulation structure, and the inner duct is located at the front side of the foam layer insulation structure. Although this structure does not occupy the volume inside the wind curtain cabinet, the cooling effect is not very good. Facing high temperature environments such as outdoor, it is difficult to achieve the expected cooling effect. However, in actual use, the wind curtain of the ordinary single-duct single-curtain structure and its products are also greatly affected by the external environment. Once the outside temperature is very high or the wind curtain fails, the wind curtain cabinet will not cool or have poor cooling effect. In addition, the temperature of the blown wind curtain is frequently exchanged with the outside world, which is easy to cause temperature imbalance in the cabinet and high energy consumption. Summary of the invention

[0003] In view of the above problems, the present invention proposes an air curtain cabinet with a single air duct and double air curtain structure and an operation method thereof.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A wind curtain cabinet with a single air duct and double air curtain structure includes a cabinet body, a top plate, a top wind plate, a vertical back plate, a vertical lee wind plate, a wind shield and a fan. The evaporator in the refrigeration system is located at the lower part of the vertical back plate, and the fan is located below the evaporator and fixedly connected to the lower bottom wall of the cabinet cavity of the cabinet body. The vertical back plate, the vertical lee wind plate, the top plate, the top wind plate and the wind shield form an air duct with a cross-section approximately in the shape of a "7", and the air outlet at the top faces downward. The vertical back plate is located at the rear side wall of the cabinet body, the vertical lee wind plate is located in front of the vertical back plate, the top plate is located on the upper top wall of the cabinet cavity, the top wind plate is located below the top plate, the top wind plate has a downward bending portion, and the wind shield is located in front of the top wind plate. The air outlet of the air duct is composed of the wind shield and the downward bending portion of the top wind plate. An air distribution plate is provided in the air outlet of the air duct, and the air distribution plate is fixed under the top plate through an air distribution plate bracket. The air distribution plate is chamfered, and the chamfer faces forward. The lateral part of the end of the chamfer is located between the top plate and the top wind plate. There is a gap between the air distribution plate and the top plate, and the gap between the air distribution plate and the top plate is smaller than the gap between the air distribution plate and the top wind plate. A honeycomb guide plate is provided between the lower part of the wind shield and the bent part of the top wind plate, and at least two U-shaped groove fixing plates are respectively provided on the front and rear sides of the honeycomb guide plate, and the U-shaped groove fixing plate has an outward protrusion, and the protrusion is correspondingly engaged with the fixing hole. At least two fixing holes are respectively provided at the lower part of the wind shield and the bent part of the top wind plate.

[0006] Furthermore, the windward plate is gradually inclined downward from front to back.

[0007] Furthermore, the vertical leeward plate is inclined forward and downward.

[0008] Furthermore, the wind deflector is chamfered, with the chamfer facing forward.

[0009] Furthermore, the lower end of the U-shaped groove fixing plate has a downward bend.

[0010] Furthermore, three fixing holes are respectively provided at the lower portion of the wind shield plate and the bent portion of the wind-repelling plate.

[0011] Furthermore, three U-shaped groove fixing plates are respectively arranged on the front and rear sides of the honeycomb guide plate, and are arranged in sequence from left to right. The protrusions of the U-shaped groove fixing plates are triangular protrusions.

[0012] Furthermore, the vertical leeward plate is provided with ventilation holes.

[0013] Furthermore, the air holes of the vertical leeward plate have circular and elliptical shapes, and the circular or horizontal ellipses are arranged from left to right in sequence as an air hole group. The vertical leeward plate has five layers of air holes arranged from top to bottom, and the first layer, the second layer and the third layer have a row of circular air hole groups respectively, the fourth layer has a circular air hole combination and an elliptical air hole group arranged from top to bottom, and the fifth layer has an elliptical air hole group, a circular air hole group and an elliptical air hole group arranged from top to bottom.

[0014] A method for operating an air curtain cabinet with a single-duct double-air curtain structure as described in any of the above items, utilizing an air distribution plate and the distance between the air distribution plate and the top air plate to divide the wind into two parts with different wind speeds, and utilizing the guidance of a honeycomb guide plate and the effect of refining the wind to form two stable air curtains.

[0015] The beneficial effects of the present invention are as follows: the wind generated by the fan will form two wind curtains after passing through the wind distribution plate and the honeycomb guide plate. The first wind curtain is located in the front of the cabinet body, with a slow wind speed, and is used to block external energy from entering the cabinet, reduce the energy exchange between the cabinet and the outside world, and reduce energy consumption. The second wind curtain is located behind the first wind curtain, and the second wind curtain is used to maintain a rapid temperature cycle in the cabinet to keep the temperature in the cabinet balanced, which can improve the performance of the product. Compared with the existing extrusion air outlets on the market, the single-duct double-air curtain structure of the present invention is simple to process and has a relatively low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the present invention.

[0017] Figure 2 for Figure 1A schematic diagram of the cross-sectional structure of a U-shaped groove in an implementation manner. DETAILED DESCRIPTION

[0018] The present invention is an air curtain cabinet with a single air duct and double air curtain structure and an operation method thereof. Figure 1 As shown, it includes a cabinet body 1, a top plate 4, a top wind plate 5, a vertical back plate 2, a vertical lee wind plate 3 and a fan 10. The evaporator in the refrigeration system is fixed to the lower front part of the vertical back plate. The fan 10 is located below the evaporator and is fixedly connected to the lower bottom wall of the cabinet cavity of the cabinet body 1. The top plate 4 is located on the upper top wall of the cabinet cavity, the vertical back plate 2 is located on the rear side wall of the cabinet cavity, the top wind plate 5 is gradually inclined downward from front to back and is located below the top plate 4, and the vertical lee wind plate 3 is inclined forward and downward and is located in front of the vertical back plate 2. The rear end of the top wind plate 5 is fixedly connected to the upper end of the vertical lee wind plate 3, the vertical lee wind plate 3 has a ventilation hole, the front end of the top wind plate 5 has a downward bending portion, and the wind shield 8 is located in front of the top wind plate 5 and is fixedly connected to the top plate 4.

[0019] An air duct with the exhaust port facing downward is formed between the vertical back panel 2, the vertical leeward panel 3, the top panel 4, the top wind panel 5 and the wind shield 8, and the cross section of the air duct is in the shape of a letter "7". The exhaust port of the air duct is composed of the chamfered wind shield 8 and the bent portion of the top wind panel 5. The lower portion of the wind shield 8 and the bent portion of the top wind panel 5 are each provided with evenly arranged fixing holes, and the chamfered wind shield 8 faces forward. An air distribution plate 7 is provided in the air duct exhaust port. The air distribution plate 7 is chamfered and fixedly connected to the bottom of the top panel 4 by the air distribution plate bracket 6, with the chamfer facing forward, and the chamfered end of the air distribution plate 7 is located between the top panel 4 and the top wind panel 5. There is a gap between the air distribution plate 7 and the top panel 4, and the gap between the air distribution plate 7 and the top panel 4 is much smaller than the gap between the air distribution plate 7 and the top wind panel 5. A honeycomb guide plate 9 is fixed between the lower part of the wind shield plate 8 and the bent part of the top wind plate 5 through a U-shaped groove fixing plate 11, and the honeycomb guide plate 9 is located below the wind distribution plate 7. Figure 2 As shown, the front and rear sides of the honeycomb guide plate 9 each have three evenly arranged U-shaped groove fixing plates 11, and the U-shaped groove fixing plate 11 has a triangular protrusion 12 protruding outward in the middle, and the triangular protrusion 12 is respectively connected and fixed to the three fixing holes at the bottom of the wind shield 8 and the three fixing holes at the bend of the top wind plate 5. The air holes of the vertical leeward plate 3 have circular and elliptical shapes, and the circular or horizontal elliptical shapes are arranged from left to right in sequence as an air hole group. The vertical leeward plate 3 has five layers of air holes arranged in sequence from top to bottom, and the first layer, the second layer and the third layer each have a row of circular air hole groups, the fourth layer has a circular air hole combination and an elliptical air hole group arranged from top to bottom, and the fifth layer has an elliptical air hole group, a circular air hole group and an elliptical air hole group arranged from top to bottom.

[0020] In the present invention, the wind generated by the fan 10 drives the cold air around the evaporator into the air duct formed between the vertical back plate 2 and the vertical leeward plate 3 and between the top plate 4 and the top wind plate 5. Since the vertical leeward plate 3 has air holes, the cold air first enters the cabinet cavity for cooling. The air duct gradually narrows from bottom to top. At the connection between the top wind plate 5 and the vertical leeward plate 3, the air duct expands and then gradually narrows from back to front. This cross-section is a structure similar to the "7" shape, which can increase the wind speed. At the end of the air duct, after the cold air passes through the air distribution plate 7, a part of it passes through the gap between the air distribution plate 7 and the top plate 4 and enters the cavity formed between the wind shield plate 8 and the air distribution plate 7, and the wind speed is relatively slow; the other part enters between the air distribution plate 7 and the top wind plate 5, and the wind speed is relatively fast. After these two parts of cold air pass through the honeycomb guide plate 9, the honeycomb guide plate 9 has the function of guiding and refining the wind, so that these two parts form two wind curtains. The first wind curtain is formed between the wind shield 8 and the air distribution plate 7. The first wind curtain is close to the front of the cabinet 1 and has a slower wind speed. It is used to block external heat from entering the cabinet, reduce the energy exchange between the cabinet and the outside world, and reduce energy consumption. The second wind curtain is formed between the air distribution plate 7 and the top wind plate 5. The second wind curtain is located behind the first wind curtain and has a faster wind speed. The temperature inside the cabinet is maintained by coordinating flow with the air holes of the vertical leeward plate 3. Rapid circulation keeps the temperature inside the cabinet balanced, which can improve product performance. The last two wind curtains return to the bottom of the cabinet 1 through the air holes at the bottom of the cabinet 1.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "rear", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An air curtain cabinet with a single air duct and double air curtain structure, comprising a cabinet body (1), a top plate (4), a top wind plate (5), a vertical back plate (2), a vertical leeward plate (3), a wind shield plate (8) and a fan (10), wherein an evaporator in a refrigeration system is located at the lower part of the vertical back plate (2), and the fan (10) is located below the evaporator and fixedly connected to the lower bottom wall of the cabinet cavity of the cabinet body (1), characterized in that: The vertical back panel (2), the vertical leeward panel (3), the top panel (4), the top wind panel (5) and the wind shield (8) form an air duct with a cross-section approximately in the shape of a letter "7", wherein the air outlet at the top faces downward, the vertical back panel (2) is located on the rear side wall of the cabinet body (1), the vertical leeward panel (3) is located in front of the vertical back panel (2), the top panel (4) is located on the upper top wall of the cabinet cavity, the top wind panel (5) is located below the top panel (4), the top wind panel (5) has a downwardly bent portion, and the wind shield (8) is located in front of the top wind panel; the air outlet of the air duct is formed by the wind shield (8) and the downwardly bent portion of the top wind panel (5); an air distributor (7) is provided in the air outlet of the air duct, the air distributor (7) is fixed to the bottom of the top panel (4) by an air distributor bracket, the air distributor (7) is chamfered, the chamfer faces forward, and the lateral portion of the end of the chamfer is located on the top panel (4) ) and the top wind plate (5); there is a gap between the air distribution plate (7) and the top plate (4), and the gap between the air distribution plate (7) and the top plate (4) is smaller than the gap between the air distribution plate (7) and the top wind plate (5); a honeycomb guide plate (9) is provided between the lower part of the wind shield plate (8) and the bent part of the top wind plate (5); at least two U-shaped groove fixing plates (11) are respectively provided on the front and rear sides of the honeycomb guide plate (9); the U-shaped groove fixing plates (11) have outward protrusions, and the protrusions are correspondingly engaged with the fixing holes; at least two fixing holes are respectively provided on the lower part of the wind shield plate (8) and the bent part of the top wind plate; the top wind plate (5) is gradually inclined downward from front to back; three U-shaped groove fixing plates (11) are respectively provided on the front and rear sides of the honeycomb guide plate (9) and are arranged in sequence from left to right, and the protrusions of the U-shaped groove fixing plates (11) are triangular protrusions (12).

2. The air curtain cabinet with a single air duct and double air curtain structure according to claim 1, characterized in that: The vertical leeward plate (3) is inclined forward and downward.

3. The air curtain cabinet with a single air duct and double air curtain structure according to claim 1, characterized in that: The wind deflector (8) is chamfered, with the chamfer facing forward.

4. The air curtain cabinet with a single air duct and double air curtain structure according to claim 1, characterized in that: The lower end of the U-shaped groove fixing plate (11) is bent downward.

5. The air curtain cabinet with a single air duct and double air curtain structure according to claim 1, characterized in that: The lower portion of the wind shield plate (8) and the bent portion of the wind-receiving plate (5) are each provided with three fixing holes.

6. The air curtain cabinet with a single air duct and double air curtain structure according to claim 1, characterized in that: The vertical leeward plate (3) is provided with ventilation holes.

7. The air curtain cabinet with a single air duct and double air curtain structure according to claim 6, characterized in that: The air holes of the vertical leeward plate (3) are circular or elliptical, and the circular or transverse elliptical shapes are arranged from left to right in sequence as an air hole group. The vertical leeward plate (3) has five layers of air holes arranged from top to bottom, the first layer, the second layer and the third layer each have a row of circular air hole groups, the fourth layer has a circular air hole combination and an elliptical air hole group arranged from top to bottom, and the fifth layer has an elliptical air hole group, a circular air hole group and an elliptical air hole group arranged from top to bottom.

8. An operating method of an air curtain cabinet with a single air duct and double air curtain structure according to claim 1, characterized in that: The wind is divided into two parts with different wind speeds by using the wind dividing plate and the distance between the wind dividing plate and the top wind plate, and two stable wind curtains are formed by using the guidance of the honeycomb guide plate and the effect of refining the wind.

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