Low-noise double-centrifugal-fan structure suitable for refrigeration equipment

Abstract

The utility model discloses a low-noise double centrifugal fan structure suitable for refrigeration equipment, which comprises a double centrifugal fan mechanism arranged in a shell of the refrigeration equipment, the double centrifugal fan mechanism comprises an outer cover body, and the outer cover body is arranged in the shell of the refrigeration equipment; the centrifugal fan is arranged in the outer cover body; each centrifugal fan comprises a motor driving assembly and a centrifugal impeller assembly, the motor driving assemblies are arranged in the outer cover body, and the centrifugal impeller assemblies are arranged at the output ends of the motor driving assemblies. And the outer cover body is arranged outside, noise generated during operation of the draught fan can be reduced, the partition plate is used for dividing the draught fan into the two air bins, the two air bins do not affect each other, and then the condensation effect of the refrigeration equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment fans, and particularly relates to a low-noise double centrifugal fan structure suitable for refrigeration equipment. Background Art

[0002] Refrigeration equipment refers to equipment mainly used for food refrigeration, refrigeration of various goods, and air conditioning in hot summer days. It mainly consists of a compressor, an expansion valve, an evaporator, a condenser, and accessories and pipelines. The refrigeration fan can generate driving wind power. Currently, the fan used in refrigeration equipment is a drum fan structure. Since the drum fan structure is fixed on the refrigeration equipment by a long shaft and driven by a conventional motor, the drum fan generates a large amount of noise during operation, and the rotation speed is not easy to control, resulting in poor condensation effect for the refrigeration equipment. Therefore, we propose a low-noise double centrifugal fan structure suitable for refrigeration equipment. Content of the Utility Model

[0003] The purpose of the utility model is to provide a low-noise double centrifugal fan structure suitable for refrigeration equipment to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A low-noise double centrifugal fan structure suitable for refrigeration equipment, including a double centrifugal fan mechanism arranged in the housing of the refrigeration equipment. The double centrifugal fan mechanism includes

[0005] An outer housing, which is arranged in the housing of the refrigeration equipment;

[0006] A centrifugal fan, which is arranged in the outer housing;

[0007] The centrifugal fan includes a motor drive assembly and a centrifugal impeller assembly. The motor drive assembly is arranged in the outer housing, and the centrifugal impeller assembly is arranged at the output end of the motor drive assembly.

[0008] Preferably, the outer housing includes a bottom plate and a housing cover. The bottom plate is arranged on the housing of the refrigeration equipment, the housing cover is arranged on the bottom plate, and an air inlet is formed between the bottom plate and the housing cover.

[0009] Preferably, the position of the housing cover corresponding to the air inlet is an arc structure.

[0010] Preferably, the outer housing is divided into two fan installation chambers by a partition. The two fan installation chambers are communicated with the air inlet, and the partition is in a "person" shape structure.

[0011] Preferably, two centrifugal fans are provided, and the two centrifugal fans are respectively arranged in the two fan installation bins, and air outlets are formed in the positions corresponding to the centrifugal fans on the housing.

[0012] Preferably, the motor drive assembly includes a mounting bracket, a motor substrate, and a drive motor;

[0013] The mounting bracket is mounted on the bottom plate by screws, the motor substrate is mounted on the mounting bracket, and the drive motor is mounted on the motor substrate.

[0014] Preferably, the centrifugal impeller assembly includes a convex arc-shaped cover, blades, and an outer ring;

[0015] The convex arc-shaped cover is connected to the output end of the drive motor, several blades are provided, the several blades are arranged at equal intervals on the convex arc-shaped cover, and the outer ring is arranged on the outer peripheral side of the several blades.

[0016] Preferably, the blades are arc-shaped curved surface structures.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. In the outer casing of the present utility model, two centrifugal fans are installed through a "herringbone" partition board, adopting a double centrifugal fan structure, and an outer casing is arranged outside, which can reduce the noise generated during the operation of the fan, and use the partition board to separate and form two air chambers without affecting each other, thereby improving the condensation effect of the refrigeration equipment;

[0019] 2. In the present utility model, several blades are provided, the several blades are arranged at equal intervals on the convex arc-shaped cover, the outer ring is arranged on the outer peripheral side of the several blades, and the blades are arc-shaped curved surface structures. Compared with the traditional drum fan structure, a centrifugal impeller structure is formed by using multiple blades with arc-shaped curved surface structures, the air volume of the centrifugal fan is increased, and thus the condensation effect of the refrigeration equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the refrigeration equipment housing and the double centrifugal fan mechanism of the present utility model;

[0021] Figure 2 is an overall structural schematic diagram of the refrigeration equipment housing of the present utility model;

[0022] Figure 3 is a partial three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 4 is a partial three-dimensional structural schematic diagram of the present utility model;

[0024] Figure 5 Partial three-dimensional structure diagram of the present utility model;

[0025] Figure 6 Partial three-dimensional structure diagram of the double centrifugal fan of the present utility model;

[0026] Figure 7 Three-dimensional structure diagram of the motor drive assembly of the present utility model;

[0027] Figure 8 Three-dimensional structure diagram of the centrifugal impeller assembly of the present utility model;

[0028] Figure 9 Three-dimensional structure diagram of the centrifugal impeller assembly of the present utility model.

[0029] In the figure: 1. Refrigeration equipment housing; 2. Double centrifugal fan mechanism; 201. Outer housing; 2011. Bottom plate; 2012. Cover shell; 2013. Air inlet; 2014. Air outlet; 202. Centrifugal fan; 2021. Motor drive assembly; 20211. Mounting bracket; 20212. Motor base plate; 20213. Driving motor; 2022. Centrifugal impeller assembly; 20221. Convex arc-shaped cover; 20222. Blades; 20223. Outer ring; 203. Partition board. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figures 1-9 , the low-noise double centrifugal fan structure applicable to refrigeration equipment provided by the present utility model includes a double centrifugal fan mechanism 2 arranged in the refrigeration equipment housing 1, and the double centrifugal fan mechanism 2 includes

[0032] An outer housing 201, the outer housing 201 is arranged in the refrigeration equipment housing 1, the outer housing 201 includes a bottom plate 2011 and a cover shell 2012, the bottom plate 2011 is arranged on the refrigeration equipment housing 1, the cover shell 2012 is arranged on the bottom plate 2011, and an air inlet 2013 is provided between the bottom plate 2011 and the cover shell 2012. The position of the cover shell 2012 corresponding to the air inlet 2013 is an arc-shaped structure. The outer housing 201 is separated by a partition board 203 to form two fan installation bins, and the two fan installation bins are communicated with the air inlet 2013. The partition board 203 is in a "person" - shaped structure;

[0033] The centrifugal fans 202 are arranged inside the outer housing 201. There are two centrifugal fans 202, which are respectively arranged in two fan installation bins. Air outlets 2014 are provided at the positions corresponding to the centrifugal fans 202 on the housing 2012.

[0034] The centrifugal fan 202 includes a motor drive assembly 2021 and a centrifugal impeller assembly 2022. The motor drive assembly 2021 is arranged inside the outer housing 201, and the centrifugal impeller assembly 2022 is arranged at the output end of the motor drive assembly 2021. The motor drive assembly 2021 includes a mounting bracket 20211, a motor base plate 20212 and a drive motor 20213. The mounting bracket 20211 is installed on the bottom plate 2011 by screws. The motor base plate 20212 is installed on the mounting bracket 20211, and the drive motor 20213 is installed on the motor base plate 20212. The centrifugal impeller assembly 2022 includes a convex arc-shaped cover 20221, blades 20222 and an outer ring 20223. The convex arc-shaped cover 20221 is connected to the output end of the drive motor 20213. A number of blades 20222 are provided, and the number of blades 20222 are arranged at equal intervals on the convex arc-shaped cover 20221. The outer ring 20223 is arranged on the outer peripheral side of the number of blades 20222. The blades 20222 are of an arc-shaped curved surface structure.

[0035] In the present utility model, two centrifugal fans 202 are installed inside the outer housing 201 through a "herringbone" partition plate 203. A double centrifugal fan structure is adopted, and an outer housing 201 is arranged outside, which can reduce the noise generated during the operation of the fan, and the partition plate 203 is used to separate and form two air bins without affecting each other, thereby improving the condensation effect of the refrigeration equipment.

[0036] In the present utility model, a number of blades 20222 are provided, and the number of blades 20222 are arranged at equal intervals on the convex arc-shaped cover 20221. The outer ring 20223 is arranged on the outer peripheral side of the number of blades 20222. The blades 20222 are of an arc-shaped curved surface structure. Compared with the traditional drum fan structure, a centrifugal impeller structure is formed by using a number of blades 20222 with an arc-shaped curved surface structure, and the air volume of the centrifugal fan is increased, thereby improving the condensation effect of the refrigeration equipment.

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A low-noise dual centrifugal fan structure suitable for refrigeration equipment, characterized in that: The invention comprises a dual centrifugal fan mechanism (2) arranged in a refrigeration equipment housing (1), wherein the dual centrifugal fan mechanism (2) comprises An outer cover (201), the outer cover (201) being arranged inside the refrigeration equipment housing (1); A centrifugal fan (202), the centrifugal fan being arranged in the outer cover (201); The centrifugal fan (202) comprises a motor drive component (2021) and a centrifugal impeller component (2022); the motor drive component (2021) is arranged in the outer cover (201); and the centrifugal impeller component (2022) is arranged at the output end of the motor drive component (2021).

2. A low-noise dual centrifugal fan structure suitable for refrigeration equipment according to claim 1, characterized in that: The outer cover body (201) comprises a base plate (2011) and a cover shell (2012); the base plate (2011) is arranged on the refrigeration equipment housing (1); the cover shell (2012) is arranged on the base plate (2011); and an air inlet (2013) is provided between the base plate (2011) and the cover shell (2012).

3. A low-noise dual centrifugal fan structure suitable for refrigeration equipment according to claim 2, characterized in that: The position of the cover shell (2012) corresponding to the air inlet (2013) is an arc-shaped structure.

4. A low-noise dual centrifugal fan structure suitable for refrigeration equipment according to claim 3, characterized in that: The outer cover (201) is divided into two fan installation compartments by a partition (203), the two fan installation compartments are connected to the air inlet (2013), and the partition (203) is a herringbone structure.

5. A low-noise dual centrifugal fan structure suitable for refrigeration equipment according to claim 4, characterized in that: Two centrifugal fans (202) are provided, and the two centrifugal fans (202) are respectively arranged in two fan installation compartments, and an air outlet (214) is provided on the cover (2012) at a position corresponding to the centrifugal fan (202).

6. A low-noise dual centrifugal fan structure suitable for refrigeration equipment according to claim 2, characterized in that: The motor drive assembly (2021) comprises a mounting bracket (20211), a motor substrate (20212) and a drive motor (20213); The mounting bracket (20211) is mounted on the base plate (2011) by means of screws, the motor substrate (20212) is mounted on the mounting bracket (20211), and the drive motor (20213) is mounted on the motor substrate (20212).

7. A low-noise dual centrifugal fan structure suitable for refrigeration equipment according to claim 6, characterized in that: The centrifugal impeller assembly (2022) comprises a convex arc-shaped cover (20221), blades (20222) and an outer ring (20223); The convex arc-shaped cover (20221) is connected to the output end of the drive motor (20213), a plurality of blades (20222) are provided, the plurality of blades (20222) are arranged at equal intervals on the convex arc-shaped cover (20221), and the outer ring (20223) is arranged on the outer peripheral side of the plurality of blades (20222).

8. The low-noise dual centrifugal fan structure suitable for refrigeration equipment according to claim 7, characterized in that: The blade (20222) is an arc-shaped curved surface structure.

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