Centrifugal fan part applied to refrigerating and freezing cabinet

Abstract

The utility model provides a centrifugal fan part applied to a refrigerating and freezing cabinet, which belongs to the technical field of freezing cabinet centrifugal fans, and comprises an air guide mechanism and an air guide shell, an air blowing mechanism is fixedly connected in the air guide shell, a fixing mechanism is fixedly connected to the back of the air guide shell, a shielding strip is fixedly connected to the front of the air guide shell, and the shielding strip is fixedly connected to the back of the air guide shell. And a plurality of communicating holes are formed in the front surface of the gas guide shell. The shock absorption layer and the noise reduction layer are added to the air guide shell and the fixed shell, when impact generated by air is conducted into the air guide shell, the shock absorption layer partially absorbs the impact force, noise generated by the centrifugal fan in use is preliminarily reduced, the noise reduction layer is made of rubber materials, and when the air enters the inner side of the fixed shell, the noise reduction layer is made of rubber materials. And when the centrifugal fan is used, the silencing layer elastically deforms, impact force generated by air is absorbed, and noise generated when the centrifugal fan is used is further reduced.

Description

Technical Field

[0001] This utility model belongs to the field of centrifugal fan technology for freezers, and particularly relates to a centrifugal fan unit used in freezers. Background Technology

[0002] As a commonly used modern refrigeration storage component, the main function of a freezer is to refrigerate and preserve food and beverages placed inside. However, due to their large internal volume, existing freezers often experience deviations in their internal cooling effect. In such cases, a centrifugal fan is needed to accelerate the airflow inside the freezer, thereby improving the freezing effect. Utility Model Content

[0003] The purpose of this invention is to solve the problem that centrifugal fans in freezers cannot reduce noise in the existing technology. By adding a sound-absorbing layer and a shock-absorbing layer, the noise generated by air impact can be partially absorbed when the centrifugal fan is rotating, thereby improving the user experience of the centrifugal fan in the freezer.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A centrifugal fan unit for use in refrigerated and frozen cabinets includes an air guiding mechanism and an air guiding shell. A blower mechanism is fixedly connected inside the air guiding shell, a fixing mechanism is fixedly connected to the back of the air guiding shell, a shielding strip is fixedly connected to the front of the air guiding shell, and a plurality of connecting holes are opened on the front of the air guiding shell, with the connecting holes located below the shielding strip.

[0006] The blower mechanism includes a fixed plate, which is fixedly connected to the inner side of the air guide shell. The fixed shell is penetrated through the inner side of the fixed plate. A motor is fixedly connected to the back of the fixed shell, and the output end of the motor extends into the interior of the fixed shell. A drive shaft is fixedly connected to the output end of the motor. Several fan blades are fixedly connected to the outer surface of the drive shaft. A guide shell is penetrated through the back of the fixed shell and is located below the motor.

[0007] Preferably, the fixing mechanism includes a connecting plate, which is fixedly connected to the back of the air guide shell.

[0008] Preferably, an adhesive layer is fixedly connected to the back of the connecting plate.

[0009] Preferably, a shielding layer is fixedly connected to the back side of the adhesive layer.

[0010] Preferably, a shock-absorbing layer is arranged inside the inner wall of the air guide shell.

[0011] Preferably, a sound-absorbing layer is fixedly connected to the inner side of the fixed shell.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This invention adds a shock-absorbing layer and a sound-absorbing layer. When the impact generated by the air is transmitted to the inside of the air guide shell, the shock-absorbing layer partially absorbs the impact force, initially reducing the noise generated by the centrifugal fan. The sound-absorbing layer is made of rubber. When air enters the inside of the fixed shell, the sound-absorbing layer undergoes elastic deformation, absorbing the impact force generated by the air, further reducing the noise generated by the centrifugal fan. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a centrifugal fan unit applied in a refrigeration and freezing cabinet according to the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of a centrifugal fan unit applied to the back of a refrigerator / freezer according to the present invention;

[0016] Figure 3 This is a cross-sectional view of the connecting part of the air guide shell proposed in this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the fixing plate connection part proposed in this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the back connection part of the fixing plate proposed in this utility model;

[0019] Figure 6 This is a schematic diagram of the connection part at point A proposed in this utility model.

[0020] In the diagram: 1. Air guiding mechanism; 101. Air guiding shell; 102. Shielding strip; 103. Connecting hole; 104. Vibration damping layer; 2. Blowering mechanism; 201. Fixing plate; 202. Fixing shell; 203. Motor; 204. Drive shaft; 205. Fan blade; 206. Guide shell; 207. Noise-absorbing layer; 3. Fixing mechanism; 301. Connecting plate; 302. Adhesive layer; 303. Shielding layer. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A centrifugal fan unit for use in a refrigerated freezer includes an air guiding mechanism 1 and an air guiding shell 101. A blower mechanism 2 is fixedly connected inside the air guiding shell 101, and a fixing mechanism 3 is fixedly connected to the back of the air guiding shell 101. The air guiding mechanism 1 includes the air guiding shell 101, a baffle strip 102, a connecting hole 103, and a shock-absorbing layer 104. It guides air from inside the freezer to the outside of the air guiding shell 101, increasing the airflow velocity inside the freezer. A shielding strip 102 is fixedly connected to the front of the air guide shell 101. The shielding strip 102 is fixedly connected to the front of the air guide shell 101 to shield the front of the air guide shell 101 and prevent large particles from the external environment from entering the interior of the air guide shell 101. Several connecting holes 103 are opened on the front of the air guide shell 101, and the connecting holes 103 are located below the shielding strip 102. When air enters the inside of the air guide shell 101, the connecting holes 103 provide space for the output of the refrigerated air.The blower mechanism 2 includes a fixed plate 201, a fixed housing 202, a motor 203, a drive shaft 204, fan blades 205, and a guide housing 206. It generates suction force on the air inside the freezer and delivers the air to the outside of the air guide housing 101. The fixed plate 201 is fixedly connected to the inside of the air guide housing 101, providing a fixing point for the fixed housing 202 that penetrates through its inner side. The fixed housing 202 is also fixedly connected to the inside of the fixed plate 201, providing a fixing point for the motor 203 fixedly connected to its rear side. The mounting point also provides a mounting point for the damping layer 104 fixedly connected to its inner side. A motor 203 is fixedly connected to the back of the mounting housing 202, and the output end of the motor 203 extends into the interior of the mounting housing 202. When electrical energy is transmitted to the interior of the motor 203 via an external control component, the motor 203 transmits rotational power to the interior of the drive shaft 204 via electromagnetic effect. The output end of the motor 203 is fixedly connected to the drive shaft 204. The drive shaft 204 rotates under the drive of the motor 203, causing the fan blades 205 fixedly connected to its outer surface to rotate. Several fan blades 205 are fixedly connected to the outer surface of the drive shaft 204. Driven by the transmission shaft 204, the fan blades 205 rotate, generating suction on the air inside the freezer under centrifugal force. The continuously rotating air then delivers the air to the interior of the guide shell 206. The guide shell 206 is connected through the back of the fixing shell 202 and is located below the motor 203. The guide shell 206 guides the air to the interior of the air guide shell 101. The fixing mechanism 3 includes a connecting plate 301, an adhesive layer 302, and a shielding layer 303, facilitating the user to fix the centrifugal fan inside the freezer. The connecting plate 301 is fixedly connected to the air guide shell 101. On the back of the 1, the connecting plate 301 is fixedly connected to the back of the air guide shell 101, providing a fixing point for the adhesive layer 302 fixedly connected to its back. The adhesive layer 302 is fixedly connected to the back of the connecting plate 301 and is made of double-sided adhesive. When it is necessary to fix the centrifugal fan, the adhesive layer 302 can be adhered to the inside of the freezer by external force to complete the fixation of the centrifugal fan. A shielding layer 303 is fixedly connected to the back of the adhesive layer 302, providing shielding for the outer surface of the adhesive layer 302 and delaying the overheating time of the adhesive layer 302.

[0023] Reference Figure 3 and Figure 4The inner wall of the air guide shell 101 is provided with a shock-absorbing layer 104, which is made of liquid epoxy resin. When the impact generated by the air is transmitted to the interior of the air guide shell 101, the shock-absorbing layer 104 partially absorbs the impact force, thus initially reducing the noise generated by the centrifugal fan. The inner side of the fixed shell 202 is fixedly connected with a sound-absorbing layer 207, which is made of rubber. When air enters the interior of the fixed shell 202, the sound-absorbing layer 207 undergoes elastic deformation, absorbing the impact force generated by the air and further reducing the noise generated by the centrifugal fan.

[0024] The functional principle of this utility model can be explained by the following operation: First, the shielding layer 303 is removed by external force to expose the adhesive layer 302. Then, the adhesive layer 302 is attached to the inner wall of the freezer. Then, through an external control component, electrical energy is transmitted to the inside of the motor 203. At this time, the motor 203 transmits rotational power to the inside of the drive shaft 204 through electromagnetic effect. The drive shaft 204 rotates, driving the fan blades 205 to rotate. The fan blades 205 pass through the shielding strip 102 to generate suction force on the air inside the freezer and deliver the air to the inside of the guide shell 206. The guide shell 206 delivers the air to the inside of the air guide shell 101. The cold air is continuously delivered to the inside of the freezer through the connecting hole 103, increasing the airflow rate inside the freezer and thus improving the freezing effect inside the freezer.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A centrifugal fan part applied to a refrigeration-freezing cabinet, comprising a gas guide mechanism (1) and a gas guide shell (101), the inside of the gas guide shell (101) is fixedly connected with a blowing mechanism (2), the back of the gas guide shell (101) is fixedly connected with a fixing mechanism (3), characterized in that, The air guide mechanism (1) contains an air guide shell (101), the front surface of the air guide shell (101) is fixedly connected with a shielding strip (102), a plurality of communication holes (103) are formed in the front surface of the air guide shell (101), and the communication holes (103) are located below the shielding strip (102); The air blowing mechanism (2) contains a fixed plate (201), the inner side of the fixed plate (201) is fixedly connected to the inner side of the air guide shell (101), the inner side of the fixed plate (201) is throughly connected with a fixed shell (202), the back surface of the fixed shell (202) is fixedly connected with a motor (203), the output end of the motor (203) extends to the inside of the fixed shell (202), the output end of the motor (203) is fixedly connected with a transmission shaft (204), the outer surface of the transmission shaft (204) is fixedly connected with a plurality of fan blades (205), the back surface of the fixed shell (202) is throughly connected with a guide shell (206), and the guide shell (206) is located below the motor (203).

2. A centrifugal fan unit for use in a refrigeration or freezing cabinet according to claim 1, wherein The fixing mechanism (3) contains a connecting plate (301), the connecting plate (301) is fixedly connected to the back surface of the air guide shell (101).

3. A centrifugal fan unit for use in a refrigeration or freezing cabinet according to claim 2, wherein The back surface of the connecting plate (301) is fixedly connected with a sticking layer (302).

4. A centrifugal fan unit for use in a refrigeration or freezing cabinet according to claim 3, wherein The back surface of the sticking layer (302) is fixedly connected with a shielding layer (303).

5. The centrifugal fan section for use in a refrigerator-freezer cabinet according to claim 1, wherein, The inner wall of the air guide shell (101) is internally arranged with a damping layer (104).

6. A centrifugal fan section for use in a refrigerating and freezing cabinet according to claim 1, characterized in that The inner side of the fixed shell (202) is fixedly connected with a sound absorbing layer (207).

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