Noise reduction fan, energy storage tank and vehicle-mounted refrigerator

Abstract

The invention discloses a noise reduction fan, an energy storage tank and a vehicle-mounted refrigerator, the noise reduction fan comprises a fan base, a fan mounting plate, a fan body, a noise reduction structure and a damping structure, and the interior of the fan base is hollow and circular; the fan mounting plate corresponds to the fan base in shape and is detachably mounted on one side of the fan base; the fan body is detachably mounted on the other side of the fan base and blows air towards the fan mounting plate; the noise reduction structure is arranged in the fan mounting plate and is used for reducing noise of the noise reduction fan; the damping structure is arranged between the fan base and the fan body and used for damping of the noise reduction fan. The noise reduction structure and the damping structure are used in cooperation, so that airflow generated during fan operation can be effectively divided and buffered, airflow noise can be weakened, mechanical noise generated by fan vibration can be absorbed, the dual noise reduction effect is remarkable, the fan noise in a vehicle-mounted closed space can be effectively reduced, and the comfort level of the environment in a vehicle is improved.

Description

Technical Field

[0001] This invention relates to vehicle refrigerators, and particularly to a noise-reducing fan, an energy storage tank, and a vehicle refrigerator. Background Technology

[0002] Car refrigerators, as commonly used refrigeration devices in automobile travel, are widely used in household, cold chain transportation, and long-distance driving scenarios. Their heat dissipation efficiency and operating noise directly affect the user experience and the comfort of the in-vehicle environment. As a core component of the car refrigerator's energy storage and heat dissipation system, the fan's quiet operation and structural stability directly affect the overall user experience and lifespan. In scenarios where noise control is crucial, such as with refrigerators and air conditioners, the cooling fan not only needs to ensure basic ventilation and heat dissipation efficiency but also needs excellent vibration damping and noise reduction performance to improve user comfort.

[0003] Currently, conventional cooling fans generally suffer from unreasonable structural design and functional deficiencies. Most fans on the market do not have built-in dedicated noise reduction structures, and the airflow turbulence noise and mechanical noise generated during fan operation cannot be effectively suppressed, making it difficult to meet the requirements for low-noise use; moreover, there are no targeted shock absorption structures between the fan body and the base, and the vibration generated during operation is easily transmitted to the whole machine, which not only aggravates abnormal noise, but also causes internal components to loosen and wear, shortening the life of the fan.

[0004] Meanwhile, some fans use an integrated base and mounting plate structure, which cannot be flexibly disassembled. If the parts are damaged, the whole unit needs to be replaced, resulting in high maintenance costs. Even if a split design is adopted, it is not adapted and optimized to the circular hollow base structure, resulting in poor assembly precision. Summary of the Invention

[0005] The purpose of this invention is to provide a noise-reducing fan, an energy storage tank, and a vehicle refrigerator, aiming to solve the problems of existing vehicle refrigerator fans lacking noise reduction and vibration damping structures and being inconvenient to disassemble.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention provides a noise-reducing fan, comprising: a fan base, a fan mounting plate, a fan body, a noise-reducing structure, and a vibration-damping structure. The fan base is hollow and circular. The fan mounting plate corresponds to the shape of the fan base and is detachably mounted on one side of the fan base. The fan body is detachably mounted on the other side of the fan base, and the fan body blows air towards the fan mounting plate. The noise-reducing structure is disposed inside the fan mounting plate and is used for noise reduction of the noise-reducing fan. The vibration-damping structure is disposed between the fan base and the fan body and is used for vibration damping of the noise-reducing fan.

[0007] Furthermore, the noise reduction structure includes multiple noise reduction rings and multiple connecting components. The multiple noise reduction rings are sequentially contracted and coaxially arranged inside the fan mounting plate. The connecting components are sequentially connected to the multiple noise reduction rings, and one end of each of the multiple connecting components is connected to the fan mounting plate, while the other end converges and connects to the axis of the multiple noise reduction rings.

[0008] Furthermore, the noise reduction ring has a first protrusion connected end to end on the side facing the fan body.

[0009] Furthermore, the first protrusion is triangular, and the included angle of the first protrusion ranges from 60° to 150°.

[0010] Furthermore, the noise-reducing fan also includes: a fixing block, which is disposed at the axis of the noise-reducing ring; each of the connecting components includes multiple connectors located on the same axis; the two ends of the connectors near the fan mounting plate are respectively connected to the fan mounting plate and the adjacent noise-reducing ring; the two ends of the connectors near the fixing block are respectively connected to the fixing block and the adjacent noise-reducing ring; and the two ends of the remaining connectors are respectively connected to two adjacent noise-reducing rings.

[0011] Furthermore, the connector has a second protrusion on the side facing the fan body. The second protrusion is triangular, and the included angle of the second protrusion is in the range of 30° to 90°.

[0012] Furthermore, the shock-absorbing structure includes: shock-absorbing cotton, a mounting groove is provided on the side of the fan base facing the fan mounting plate, one side of the shock-absorbing cotton is detachably installed in the mounting groove, and an abutment is provided on one side of the fan body. After the abutment penetrates the fan base, the other side of the shock-absorbing cotton abuts against the abutment.

[0013] Furthermore, the noise-reducing fan also includes a quick-release structure. The noise-reducing fan is installed on the refrigerator body. The quick-release structure includes two buckles located on both sides of the bottom of the fan mounting plate and two limiting members set on the refrigerator body corresponding to the two buckles. The buckles can be detachably abutted against the limiting members.

[0014] The present invention also provides an energy storage tank, comprising: an energy storage tank upper cover, a lower tank body, and an air duct. The energy storage tank upper cover is disposed on the lower tank body, and one side of the lower tank body is connected to the refrigerator body. The energy storage tank upper cover includes an upper cover body, a cover, a liquid injection assembly, and a noise-reducing fan as described above. The upper cover body is detachably connected to the lower tank body. The cover is disposed on the upper cover body, and a receiving cavity is formed between the upper cover body and the cover. The fan assembly is disposed on one side of the upper cover body and located within the receiving cavity. The liquid injection assembly is disposed on the upper cover body and located outside the receiving cavity. The air duct is disposed on the other side of the lower tank body, the bottom of the air duct is connected to the refrigerator body, and the top is connected to the receiving cavity. The fan assembly draws air from the air duct and blows air towards the refrigerator body. The liquid injection assembly is connected to the lower tank body.

[0015] The present invention also provides a vehicle refrigerator, comprising: a refrigerator body, an evaporator and an energy storage tank as described above, wherein the lower tank is connected to one side of the refrigerator body and the lower tank is connected to the bottom of the refrigerator body, the evaporator is connected to the side of the air duct away from the lower tank, and the upper cover of the energy storage tank is connected to the top of the refrigerator body.

[0016] This invention provides a noise-reducing fan, an energy storage tank, and a vehicle refrigerator. The noise-reducing fan includes a fan base, a fan mounting plate, a fan body, a noise-reducing structure, and a vibration-damping structure. The fan base is hollow and circular. The fan mounting plate corresponds to the shape of the fan base and is detachably mounted on one side of the fan base. The fan body is detachably mounted on the other side of the fan base, and the fan body blows air towards the fan mounting plate. The noise-reducing structure is disposed inside the fan mounting plate and is used for noise reduction by the noise-reducing fan. The vibration-damping structure is disposed between the fan base and the fan body and is used for vibration damping by the noise-reducing fan. In this invention, the combined use of the noise-reducing structure and the vibration-damping structure can effectively divide and buffer the airflow generated during fan operation, reducing airflow noise, and absorb the mechanical noise generated by fan vibration. The dual noise reduction effect is significant, which can effectively reduce fan noise in the enclosed space of a vehicle and improve the comfort of the in-vehicle environment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first-view structural schematic diagram of a noise-reducing fan provided in an embodiment of the present invention; Figure 2This is a structural schematic diagram of a noise-reducing fan from a second perspective, provided in an embodiment of the present invention. Figure 3 This is a first-view structural schematic diagram of the fan mounting plate provided in an embodiment of the present invention; Figure 4 Cross-sectional view AA provided for embodiments of the present invention; Figure 5 This is a schematic diagram of the fan mounting plate from a second perspective, provided in an embodiment of the present invention. Figure 6 Partial Figure B provided for an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the fan base provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the fan body provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the refrigerator body provided in an embodiment of the present invention; Figure 10 Partial view C provided for an embodiment of the present invention; Figure 11 This is a schematic diagram of the quick-release structure provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the energy storage tank provided in an embodiment of the present invention; Figure 13 This is a schematic diagram of the structure of the cover provided in an embodiment of the present invention.

[0019] Explanation of the markings in the image: 1. Noise-reducing fan; 11. Fan base; 12. Fan mounting plate; 13. Fan body; 131. Abutment part; 14. Noise-reducing structure; 141. Noise-reducing ring; 142. Connecting component; 143. First protrusion; 144. Fixing block; 145. Connector; 146. Second protrusion; 15. Shock-absorbing structure; 151. Shock-absorbing cotton; 152. Shock-absorbing sheet; 16. Mounting slot; 17. Quick-release structure; 171. Buckle; 172. Limiting component; 2. Refrigerator body; 3. Energy storage tank top cover; 31. Top cover body; 32. Cover body; 33. Liquid injection assembly; 34. Receiving cavity; 4. Lower tank body; 5. Air duct; 6. Evaporator. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0022] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0024] Combination Figure 1-13 As shown, the present invention provides a noise-reducing fan 1, including: a fan base 11, a fan mounting plate 12, a fan body 13, a noise-reducing structure 14, and a shock-absorbing structure 15. The fan base 11 is hollow and circular. The fan mounting plate 12 corresponds to the shape of the fan base 11 and is detachably mounted on one side of the fan base 11. The fan body 13 is detachably mounted on the other side of the fan base 11, and the fan body 13 blows air towards the fan mounting plate 12. The noise-reducing structure 14 is disposed inside the fan mounting plate 12 and is used for noise reduction of the noise-reducing fan 1. The shock-absorbing structure 15 is disposed between the fan base 11 and the fan body 13 and is used for shock absorption of the noise-reducing fan 1.

[0025] In this embodiment of the invention, the fan base 11 is hollow and circular, providing an airflow channel for the fan body 13. The fan mounting plate 12 corresponds to its shape and is detachable and installable. The fan body 13 can also be detachably installed on the fan base 11, realizing a modular and detachable design for each component of the fan. Compared with the existing integrated structure, this greatly improves the ease of disassembly and assembly. When performing maintenance or replacing the fan body 13, noise reduction structure 14, vibration damping structure 15, or fan base 11, it is not necessary to disassemble the entire fan, saving manpower and time costs. This is suitable for the rapid maintenance needs in vehicle scenarios. The combined use of the noise reduction structure 14 and the vibration damping structure 15 can effectively divide and buffer the airflow generated when the fan is running, reducing airflow noise, and absorb the mechanical noise generated by the vibration of the fan body 13. The dual noise reduction effect is significant, which can effectively reduce the fan noise in the enclosed space of the vehicle, improve the comfort of the in-vehicle environment, and solve the problems of existing car refrigerator fans lacking noise reduction and vibration damping structures and being inconvenient to disassemble.

[0026] In some specific embodiments, the noise reduction structure 14 includes multiple noise reduction rings 141 and multiple connecting components 142. The multiple noise reduction rings 141 are sequentially contracted and coaxially arranged inside the fan mounting plate 12. The connecting components 142 are sequentially connected to the multiple noise reduction rings 141. One end of the multiple connecting components 142 is connected to the fan mounting plate 12, and the other end is converged and connected to the axis of the multiple noise reduction rings 141.

[0027] In this embodiment, the noise reduction structure 14 employs multiple sequentially contracting and coaxially arranged noise reduction rings 141, along with multiple connecting components 142. This effectively divides and buffers the airflow generated during fan operation, reducing airflow noise, and also absorbs mechanical noise generated by fan vibration. The dual noise reduction effect is significant, effectively reducing fan noise in the enclosed space of the vehicle and improving the comfort of the in-vehicle environment. One end of the connecting component 142 is connected to the fan mounting plate 12, and the other end converges at the axis of the noise reduction ring 141, ensuring a secure fixation of the noise reduction ring 141 while avoiding obstruction of airflow and not affecting the fan's blowing efficiency. The coaxially arranged noise reduction rings 141 have a stable structure, and with the fixation of the connecting components 142, they can withstand bumps and swaying during vehicle operation, preventing displacement of the noise reduction components, avoiding additional noise or damage to the fan, and improving operational stability.

[0028] In some specific embodiments, the noise reduction ring 141 is provided with a first protrusion 143 connected end to end on the side facing the fan body 13.

[0029] In this embodiment, the annular first protrusion 143 connected at both ends can further optimize the noise reduction effect. It can effectively divide the turbulent airflow generated when the fan body 13 is running, slow down the airflow speed, straighten the airflow direction, weaken the noise generated by the airflow hitting the noise reduction ring 141, and absorb the mechanical noise transmitted by the fan vibration, further reducing the fan noise in the vehicle's enclosed space and improving the comfort inside the vehicle.

[0030] In some specific embodiments, the first protrusion 143 is triangular, and the included angle of the first protrusion 143 is in the range of 60° to 150°.

[0031] In this embodiment, the triangular structure itself has good stability. Combined with the end-to-end connection design, it can further enhance the structural strength of the noise reduction ring 141, resist the impact of vehicle bumps, and prevent the noise reduction ring 141 from deforming or shifting. The 60°~150° included angle design can maximize the contact with the airflow generated by the fan operation, effectively divide the turbulent airflow and reduce airflow noise, without blocking the airflow channel, thus ensuring heat dissipation efficiency.

[0032] In some specific embodiments, the noise-reducing fan 1 further includes: a fixing block 144, which is disposed at the axis of the noise-reducing ring 141; each connecting component 142 includes multiple connectors 145 located on the same axis; the two ends of the connectors 145 near the fan mounting plate 12 are respectively connected to the fan mounting plate 12 and the adjacent noise-reducing ring 141; the two ends of the connectors 145 near the fixing block 144 are respectively connected to the fixing block 144 and the adjacent noise-reducing ring 141; and the two ends of the remaining connectors 145 are respectively connected to two adjacent noise-reducing rings 141.

[0033] In this embodiment, the fixing block 144 is located at the center of the noise reduction ring 141, serving as the core fixing fulcrum of the entire noise reduction structure 14. This effectively prevents the noise reduction ring 141 from shifting or shaking in a bumpy vehicle environment, ensuring stable noise reduction performance. Multiple sets of coaxial connectors 145 have clearly defined functions: the connector 145 near the fan mounting plate 12 securely connects to the mounting plate; the connector 145 near the fixing block 144 precisely fixes to the center of the shaft; and the remaining connectors 145 are connected in series with each noise reduction ring 141. This ensures that all noise reduction rings 141 are coaxially aligned and that the force is evenly distributed, enhancing the overall structural stability.

[0034] In some specific embodiments, the connector 145 is provided with a second protrusion 146 on the side facing the fan body 13. The second protrusion 146 is triangular, and the included angle of the second protrusion 146 is in the range of 30° to 90°.

[0035] In this embodiment, the included angle of the second protrusion 146 is designed to range from 30° to 90°. This design effectively diverts the airflow generated by the fan, reducing noise caused by airflow impact, and also enhances the fit between the connector 145 and the fan body 13, improving connection stability. The triangular structure combines stability and guidance, reducing component swaying in bumpy vehicle environments and preventing additional noise. It also does not obstruct the airflow channel, ensuring heat dissipation efficiency, and assists in positioning and installation. Balancing noise reduction with ease of use, it adapts to complex vehicle operating conditions, providing support for stable fan operation.

[0036] In some specific embodiments, the connecting components 142 are provided in eight groups, and the included angle between two adjacent connecting components 142 is 45°.

[0037] In this embodiment, the eight sets of connecting components 142 are evenly distributed, and the included angle of 45° can achieve force balance, avoid local force concentration, enhance the overall structural stability, adapt to the bumpy environment of the vehicle, and prevent the connection from loosening.

[0038] In some specific embodiments, the noise-reducing fan 1 further includes a shock-absorbing structure 15, which includes: shock-absorbing cotton 151; a mounting groove 16 is provided on the side of the fan base 11 facing the fan mounting plate 12; one side of the shock-absorbing cotton 151 is detachably installed in the mounting groove 16; and an abutment part 131 is provided on one side of the fan body 13. After the abutment part 131 passes through the fan base 11, the other side of the shock-absorbing cotton 151 abuts against the abutment part 131.

[0039] In this embodiment, the mounting groove 16 on the fan base 11 provides a stable mounting carrier for the shock-absorbing cotton 151, enabling precise positioning of the shock-absorbing cotton 151 and preventing it from shifting in the bumpy environment of a vehicle, thus ensuring stable shock absorption. The shock-absorbing cotton 151 can be detachably installed in the mounting groove 16, facilitating later maintenance and replacement and reducing usage costs. When the fan body 13 is installed, the abutment part 131 penetrates through the fan base 11, and the shock-absorbing cotton 151 is tightly abutted against the abutment part 131, which can effectively absorb the vibration generated during fan operation, reduce vibration transmission, protect the fan body 13 and related components, extend service life, and reduce the noise generated by vibration, meeting the quiet requirements of the enclosed environment of a vehicle.

[0040] In some specific embodiments, the damping structure 15 further includes a damping plate 152, which is connected to the side of the fixing block 144 facing the fan body 13 and abuts against the abutment portion 131.

[0041] In this embodiment, the added shock-absorbing pad 152 is connected to the side of the fixing block 144 facing the fan body 13 and abuts against the abutting part 131. Together with the shock-absorbing cotton 151, it forms a double shock-absorbing protection, which can further absorb the residual vibration generated by the operation of the fan body 13, further weaken the vibration transmission, reduce additional noise, and at the same time help fix the fan body 13, improve the overall structural stability, avoid component wear due to excessive vibration, further extend the service life of the fan, and does not affect the normal operation and heat dissipation of the fan.

[0042] It is understood that the abutting part 131 includes an abutting surface facing the damping pad 152 and an abutting groove facing the damping cotton 151, with the abutting surface and the abutting groove being arranged in opposite directions.

[0043] In some specific embodiments, the noise-reducing fan 1 also includes a quick-release structure 17. The noise-reducing fan 1 is mounted on the refrigerator body 2. The quick-release structure 17 includes two buckles 171 located on both sides of the bottom of the fan mounting plate 12 and two limiting members 172 provided on the refrigerator body 2 corresponding to the two buckles 171. The buckles 171 can be detachably abutted against the limiting members 172.

[0044] In this embodiment, two clips 171 are symmetrically arranged at the bottom of the fan mounting plate 12, precisely corresponding to the limiting member 172 on the refrigerator body 2. The clips 171 and the limiting member 172 are detachably connected, allowing for quick installation and removal of the fan without the need for complex tools, significantly improving subsequent maintenance efficiency and reducing labor costs. During vehicle operation, the clips 171 and the limiting member 172 are tightly connected, effectively preventing the fan from shifting or shaking due to bumps, ensuring stable fan operation, and avoiding additional noise or component damage.

[0045] The present invention also provides an energy storage tank, comprising: an energy storage tank upper cover 3, a lower tank body 4, and an air duct 5. The energy storage tank upper cover 3 is disposed on the lower tank body 4, and one side of the lower tank body 4 is connected to the refrigerator body 2. The energy storage tank upper cover 3 includes an upper cover body 31, a cover 32, a liquid injection assembly 33, and a noise reduction fan 1 as described above. The upper cover body 31 is detachably connected to the lower tank body 4. The cover 32 is disposed on the upper cover body 31, and a receiving cavity 34 is formed between the upper cover body 31 and the cover 32. The fan assembly is disposed on one side of the upper cover body 31 and located inside the receiving cavity 34. The liquid injection assembly 33 is disposed on the upper cover body 31 and located outside the receiving cavity 34. The air duct 5 is disposed on the other side of the lower tank body 4, with the bottom of the air duct 5 connected to the lower tank body 4 and the top connected to the receiving cavity 34. The fan assembly draws air from the air duct 5 and blows air towards the refrigerator body 2. The liquid injection assembly 33 is connected to the lower tank body 4.

[0046] In this embodiment of the invention, the receiving cavity 34 formed by the cover 32 and the upper cover body 31 not only protects the internal noise-reducing fan 1 from external interference, but also regulates the airflow direction. The noise-reducing fan 1 is located inside the receiving cavity 34, drawing air from the direction of the air duct 5 and blowing it towards the refrigerator body 2. This, combined with the air duct 5, ensures air circulation inside the vehicle refrigerator, guaranteeing heat dissipation efficiency, reducing operating noise, and improving the user experience. The liquid injection component 33 is located outside the receiving cavity 34, making it easy to operate, allowing for rapid replenishment of the medium, and avoiding interference with the fan component.

[0047] The present invention also provides a vehicle refrigerator, comprising: a refrigerator body 2, an evaporator 6 and an energy storage tank as described above, a lower tank 4 connected to one side of the refrigerator body 2 and the lower tank 4 connected to the bottom of the refrigerator body 2, the evaporator 6 connected to the side of the air duct 5 away from the lower tank 4, the upper cover 3 of the energy storage tank connected to the top of the refrigerator body 2, and a fan assembly blowing air towards the refrigerator body 2.

[0048] In this embodiment of the invention, the lower tank 4 is connected to one side of the refrigerator body 2 and its bottom, while the energy storage tank cover 3 is connected to the top of the refrigerator body 2, forming a complete airflow and medium circulation channel, effectively improving cooling and cold storage efficiency. The evaporator 6 is connected to the side of the air duct 5 away from the lower tank 4, which can quickly cool the airflow. Combined with the fan assembly blowing air towards the refrigerator body 2, it further optimizes the cooling effect and avoids uneven local temperature. At the same time, the compact layout of each component is suitable for the narrow space of the vehicle. The design of the connection between the lower tank 4 and the refrigerator body 2 improves the operational stability and avoids component loosening caused by vehicle bumps. Combined with the noise reduction effect of the noise reduction fan 1, it can effectively reduce fan noise in the enclosed space of the vehicle and improve the comfort of the in-vehicle environment.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A noise-reducing fan, characterized in that, include: A fan base, wherein the interior of the fan base is hollow and circular; A fan mounting plate, which corresponds to the shape of the fan base and is detachably mounted on one side of the fan base; The fan body is detachably mounted on the other side of the fan base, and the fan body blows air toward the fan mounting plate; A noise reduction structure is disposed inside the fan mounting plate and is used to reduce the noise of the fan. A shock-absorbing structure is disposed between the fan base and the fan body and is used to reduce the vibration of the fan for noise reduction.

2. The noise-reducing fan according to claim 1, characterized in that, The noise reduction structure includes multiple noise reduction rings and multiple connecting components. The multiple noise reduction rings are sequentially contracted and coaxially arranged inside the fan mounting plate. The connecting components are sequentially connected to the multiple noise reduction rings, and one end of each of the multiple connecting components is connected to the fan mounting plate, while the other end converges and connects to the axis of the multiple noise reduction rings.

3. The noise-reducing fan according to claim 2, characterized in that, The noise reduction ring has a first protrusion on the side facing the fan body, with the two ends connected.

4. The noise-reducing fan according to claim 3, characterized in that, The first protrusion is triangular, and the included angle of the first protrusion ranges from 60° to 150°.

5. The noise-reducing fan according to claim 2, characterized in that, Also includes: A fixing block is disposed at the axis of the noise reduction ring. Each connecting component includes multiple connectors located on the same axis. The two ends of the connectors near the fan mounting plate are respectively connected to the fan mounting plate and the adjacent noise reduction ring. The two ends of the connectors near the fixing block are respectively connected to the fixing block and the adjacent noise reduction ring. The two ends of the remaining connectors are respectively connected to two adjacent noise reduction rings.

6. The noise-reducing fan according to claim 5, characterized in that, The connector has a second protrusion on the side facing the fan body. The second protrusion is triangular and the included angle of the second protrusion is in the range of 30° to 90°.

7. The noise-reducing fan according to claim 1, characterized in that, The damping structure includes: The shock-absorbing cotton has a mounting groove on the side of the fan base facing the fan mounting plate. One side of the shock-absorbing cotton is detachably installed in the mounting groove. One side of the fan body has an abutment part. After the abutment part passes through the fan base, the other side of the shock-absorbing cotton abuts against the abutment part.

8. The noise-reducing fan according to claim 1, characterized in that, It also includes a quick-release structure. The noise-reducing fan is installed on the refrigerator body. The quick-release structure includes two buckles located on both sides of the bottom of the fan mounting plate and two limiting members set on the refrigerator body corresponding to the two buckles. The buckles can be detachably abutted against the limiting members.

9. An energy storage tank, characterized in that, include: The energy storage tank comprises an upper cover, a lower tank body, and an air duct. The upper cover covers the lower tank body, and one side of the lower tank body is connected to the refrigerator body. The upper cover includes an upper cover body, a cover, a liquid injection assembly, and a noise-reducing fan as described in any one of claims 1-8. The upper cover body is detachably connected to the lower tank body. The cover covers the upper cover body, and a receiving cavity is formed between the upper cover body and the cover. The fan assembly is disposed on one side of the upper cover body and located within the receiving cavity. The liquid injection assembly is disposed on the upper cover body and located outside the receiving cavity. The air duct is disposed on the other side of the lower tank body, with its bottom connected to the refrigerator body and its top connected to the receiving cavity. The fan assembly draws air from the air duct and blows air towards the refrigerator body. The liquid injection assembly is connected to the lower tank body.

10. A vehicle-mounted refrigerator, characterized in that, include: The refrigerator body, the evaporator, and the energy storage tank as described in claim 9, wherein the lower tank is connected to one side of the refrigerator body and the lower tank communicates with the bottom of the refrigerator body, the evaporator is connected to the side of the air duct away from the lower tank, and the upper cover of the energy storage tank communicates with the top of the refrigerator body.

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