Air duct assembly for vertical refrigerator
By designing air duct components with gradient channel sections and arc-shaped transition walls in a vertical refrigerator, the problem of uneven temperature inside the refrigerator is solved, and uniform distribution of cold air and cooling efficiency are achieved.
Patent Information
- Application Number
- CN202422413150.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The air duct components of existing vertical refrigerators are difficult to achieve uniform temperatures in various places inside the refrigerator, resulting in uneven refrigeration effects.
An air duct assembly is designed, including an air duct housing, a fan hood and a centrifugal fan. There are multiple channel sections in the air duct housing. The cross-sectional area of the channel section gradually increases from top to bottom, and cold air is evenly distributed through multiple air outlets. Combined with the arc-shaped transition wall, the air flow path is optimized to reduce vortex and noise.
The temperature uniformity of the refrigerator is achieved, the cooling efficiency is improved, and the air resistance and noise are reduced.
Smart Images
Figure CN223179129U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of refrigeration equipment, in particular to an air duct component for a vertical refrigerator. Background Art
[0002] Upright freezers, as refrigeration equipment capable of storing items at low temperatures, are widely used in restaurants, retail stores, and other places. Among them, air-cooled freezers, which are less likely to freeze inside, are the most popular.
[0003] In air-cooled freezers, the refrigeration compartment occupies a considerable amount of space, necessitating consistent low-temperature storage conditions throughout the entire compartment. To address this, freezer designers have incorporated air duct assemblies into the freezer to guide the flow of cool air, aiming to distribute the air evenly throughout the compartment. While various air duct assemblies exist in the prior art, achieving temperature uniformity within the refrigeration compartment remains challenging. Utility Model Content
[0004] In order to solve the above technical problems, the purpose of the present invention is to provide an air duct assembly for an upright refrigerator with uniform air output.
[0005] To this end, the present invention provides an air duct assembly for an upright freezer, which is suitable for being installed in a refrigeration compartment of the upright freezer, the air duct assembly comprising an air duct housing, a fan cover and a centrifugal fan, the fan cover being installed at the rear of the air duct housing and the two defining a fan chamber, the centrifugal fan being accommodated in the fan chamber, the air duct housing defining a plurality of air ducts, the plurality of air ducts being distributed side by side on the lower side of the fan chamber and being fluidically connected to the fan chamber, a plurality of first air outlets being provided on each of the air ducts, each of the air ducts comprising a plurality of channel sections connected in sequence up and down, the channel cross-sectional area of each of the channel sections being equal from top to bottom; in two adjacent channel sections up and down, the channel cross-sectional area of the channel section located on the lower side is smaller than the channel cross-sectional area of the channel section located on the upper side.
[0006] In the above technical solution, preferably, the number of the air ducts is a pair.
[0007] In the above technical solution, preferably, in each of the air ducts, the number of the channel sections is more than 3.
[0008] In the above technical solution, preferably, the air duct housing includes a front side wall and multiple rear side walls, and the multiple rear side walls are arranged side by side on the rear side of the front side wall, and each of the rear side walls and the front side wall defines an air duct.
[0009] In the above technical solution, preferably, the cross-section of the rear side wall is U-shaped.
[0010] In the above technical solution, preferably, in at least part of the channel section, the at least one first air outlet is close to the lowermost end of the channel section.
[0011] In the above technical solution, preferably, the air duct housing includes a bottom wall, and a plurality of second air outlets are arranged on the bottom wall, and each of the second air outlets is in fluid communication with the lowermost channel section of one of the air ducts.
[0012] In the above technical solution, preferably, the blower housing has a plurality of arc-shaped transition walls distributed along the circumference, and each of the arc-shaped transition walls and the air duct housing define an exhaust passage, and each of the exhaust passages is in fluid communication with the upper part of one of the air ducts.
[0013] In the above technical solution, preferably, the blower chamber has a plurality of third air outlets on the air duct housing.
[0014] In the above technical solution, preferably, the air duct housing is defined by one or more injection molded parts.
[0015] In the air duct assembly solution of the present utility model, by providing the air duct with channel sections having different channel cross-sectional areas, the cold air pressure entering each air duct is basically the same from top to bottom, and it can achieve uniform distribution of the cold air flowing out of each channel section from top to bottom, thereby ensuring the temperature uniformity in the refrigerating chamber of the vertical freezer where it is located. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a usage state diagram of the air duct assembly according to an embodiment of the present utility model;
[0017] Figure 2 is an exploded view of the air duct assembly according to an embodiment of the present utility model;
[0018] Figure 3 is another exploded view of the air duct assembly according to an embodiment of the present utility model;
[0019] Figure 4 is a schematic diagram of the cold air flowing along the first air duct in the air duct assembly according to an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0021] The air duct assembly mentioned in this application is applied to a vertical freezer and serves as a component for delivering cold air to various areas of the refrigeration compartment of the freezer.
[0022] As Figure 1 shown, in the vertical freezer 200, an inner container 201 is provided inside the vertical freezer 200, and a refrigeration compartment 202 is defined inside the inner container 201. The air duct assembly 100 is installed on the inner wall surface of the inner container 201. The cold air flowing through the evaporator 203 of the refrigeration system will be guided into the air duct assembly 100 and then flow into different areas of the refrigeration compartment 202.
[0023] As Figure 2 、 Figure 3 shown, the air duct assembly 100 includes an air duct housing 1, a fan cover 2, and a centrifugal fan 3. The fan cover 2 is installed at the rear of the air duct housing 1 and the two define a fan chamber 4, and the centrifugal fan 3 is accommodated in the fan chamber 4.
[0024] The air duct housing 1 has a front side wall 11, a first rear side wall 12, a second rear side wall 13, and a bottom wall 14. The air duct housing 1 can be composed of one or more injection-molded parts.
[0025] The front side wall 11 is a flat wall surface. In Figure 1 the installation example, after the air duct housing 1 is installed, the front side wall 11 will be flush with the inner wall surface at the rear of the inner container 201. In this example, the cross-sections of the first rear side wall 12 and the second rear side wall 13 are both U-shaped; a first air duct 16 is defined between the first rear side wall 12 and the front side wall 11, and a second air duct 17 is defined between the second rear side wall 13 and the front side wall 11. The first air duct 16 and the second air duct 17 will form a left-right arrangement structure. The first air duct 16 and the second air duct 17 are both located below the fan chamber 4 and are in fluid communication with the fan chamber 4.
[0026] The first air duct 16 includes a first channel section 161, a second channel section 162, a third channel section 163, and a fourth channel section 164 that are connected in sequence from top to bottom. In the first channel section 161, the second channel section 162, the third channel section 163, and the fourth channel section 164, the cross-sectional area of each channel section is equal from top to bottom; in this example, the cross-sectional areas of the first channel section 161, the second channel section 162, the third channel section 163, and the fourth channel section 164 are all rectangular; in two adjacent channel sections, the cross-sectional area of the lower channel section is smaller than that of the upper channel section; in this example, the cross-sectional areas of the first channel section 161, the second channel section 162, the third channel section 163, and the fourth channel section 164 increase in sequence. In this example, an air outlet 165 is provided at the front of each of the first channel section 161, the second channel section 162, and the third channel section 163, and the cold air flowing through each corresponding channel section can be output externally from the corresponding air outlet 165. In other embodiments, the number of air outlets in each channel section can also be multiple. The air outlet 165 at the front of each channel section is preferably provided at a position adjacent to the lowermost end of the channel section.
[0027] In this example, the structures of the first air duct 16 and the second air duct 17 are exactly the same. Similarly, the second air duct 17 includes a first channel section 171, a second channel section 172, a third channel section 173, and a fourth channel section 174 that are connected in sequence from top to bottom. The cross-sectional areas of the first channel section 171, the second channel section 172, the third channel section 173, and the fourth channel section 174 increase in sequence; an air outlet 175 is provided at the front of each of the first channel section 171, the second channel section 172, and the third channel section 173, and the air flow flowing through each channel section can be output externally from the corresponding air outlet 175.
[0028] A pair of air outlets 141 are provided on the bottom wall 14, and the pair of air outlets 141 are in fluid communication with the fourth channel section 164 of the first air duct 16 and the fourth channel section 174 of the second air duct 17; the cold air flowing into the fourth channel sections 164 and 174 will flow out from the pair of air outlets 141 respectively. The front part of the bottom wall 14 has an arc-shaped structure, which can guide the cold air flowing out from the pair of air outlets 141 to flow forward and downward.
[0029] Since the cross-sectional areas of the respective channel sections of the first air duct 16 narrow in a gradient change manner from top to bottom, it can make the air pressure in the channel remain basically unchanged when the cold air flows from the first channel section 161 to the fourth channel tube 164, so that the amount of cold air transported from the corresponding air outlet 165 or the air outlet 141 per unit time is approximately the same.
[0030] The blower housing 2 is installed at the rear upper part of the front side wall 11, and the blower chamber 4 defined therebetween is located at the upper part of the entire air duct assembly 100. An air suction port 41 is provided at the central part of the blower housing 2, and cold air can be sucked into the blower chamber 4 from the air suction port 41. A plurality of air outlet ports 42 are provided at the front side wall 11 where it abuts against the blower housing 2; a part of the cold air entering the blower chamber 4 escapes from the plurality of air outlet ports 42.
[0031] The blower housing 2 has a pair of arc-shaped transition walls 21 and 22 distributed along the circumference, and the arc-shaped transition walls 21 and 22 respectively define exhaust channels 23 and 24 with the front side wall 11; wherein, the exhaust channel 23 is in fluid communication with the upper part of the first air duct 16; the exhaust channel 24 is in fluid communication with the upper part of the second air duct 17. In this way, the cold air output from the centrifugal blower 3 in the blower chamber 4 is divided into two streams and conveyed into the first air duct 16 and the second air duct 17. The structure of this exhaust channel 24 enables the air blown out by the centrifugal blower to move in a streamlined exhaust channel 24 in a divided flow, which reduces the generation of eddy currents, optimizes the air flow path inside the air duct, reduces the air resistance, and improves the flow efficiency; furthermore, it reduces the noise and vibration caused by eddy current turbulence.
[0032] The technical scope of the present utility model is not limited to the content in the above specification. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present utility model, and these deformations and modifications shall all fall within the protection scope of the present utility model.
Claims
1. An air duct assembly for a vertical freezer, the air duct assembly being adapted to be installed in a refrigerating compartment of the vertical freezer, characterized in that, The described air duct assembly includes an air duct housing, a fan cover, and a centrifugal fan. The fan cover is installed at the rear of the air duct housing, and the two define a fan chamber. The centrifugal fan is accommodated in the fan chamber. The air duct housing defines a plurality of air ducts. The plurality of air ducts are arranged side by side left and right below the fan chamber and are in fluid communication with the fan chamber. A plurality of first air outlets are provided on each of the air ducts. Each of the air ducts includes a plurality of channel segments connected in sequence from top to bottom. The cross-sectional area of the channel of each channel segment is equal from top to bottom. In two adjacent channel segments up and down, the cross-sectional area of the channel segment located on the lower side is smaller than the cross-sectional area of the channel segment located on the upper side.
2. The air duct assembly according to claim 1, wherein: The number of the air ducts is a pair.
3. The air duct assembly according to claim 1, wherein: In each of the air ducts, the number of the channel segments exceeds 3.
4. The air duct assembly according to claim 1, wherein: The air duct housing includes a front side wall and a plurality of rear side walls. The plurality of rear side walls are arranged side by side left and right at the rear of the front side wall. Each of the rear side walls and the front side wall define one of the air ducts.
5. The air duct assembly according to claim 1, wherein: The cross-section of the rear side wall is U-shaped.
6. The air duct assembly according to claim 1, wherein: In at least some of the channel segments, at least one of the first air outlets is close to the lowermost end of the channel segment.
7. The air duct assembly according to claim 1, wherein: The air duct housing includes a bottom wall. A plurality of second air outlets are arranged on the bottom wall. Each of the second air outlets is in fluid communication with the lowermost channel segment of one of the air ducts.
8. The air duct assembly according to claim 1, wherein, The fan cover has a plurality of arc-shaped transition walls distributed along the circumference. Each of the arc-shaped transition walls and the air duct housing define an exhaust passage. Each of the exhaust passages is in fluid connection with the upper part of one of the air ducts.
9. The air duct assembly according to claim 1, wherein: The fan chamber has a plurality of third air outlets on the air duct housing.
10. The air duct assembly according to claim 1, characterized in that, The air duct housing is defined by one or more injection-molded components.