Protection device and unit protection assembly

Abstract

The utility model provides a protection device and a unit protection assembly. And the protection device is arranged at the air outlet of the fan assembly. The protection device comprises a protection plate which can be switched between a first state and a second state. In the first state, the protection plate deviates from the air outlet so as to expose the air outlet. And in the second state, the protection plate covers at least part of the air outlet, and the upward top surface of the protection plate is obliquely arranged, so that sundries slide down along the top surface. The protection plate covers at least part of the air outlet in the second state, and the upward top surface of the protection plate is obliquely arranged, so that impurities are prevented from entering the fan assembly, the fan assembly is protected, and stable operation of the fan assembly is realized.

Description

Technical Field

[0001] This application relates to the field of protection devices, and particularly to protection devices and unit protection assemblies. Background Art

[0002] With the wide application of fan components, many different types of fan components have emerged on the market. Fan components can be applied to fields such as building design, industrial processes, agricultural production, or transportation. Most existing fan components are installed in outdoor environments, and the interior of the fan component is connected to the external space through an air outlet. When foreign objects enter the interior of the fan component from the air outlet, it will affect the normal operation of the fan component and may even damage the parts of the fan component. Summary of the Utility Model

[0003] This application provides a protection device and a unit protection assembly that can protect fan components.

[0004] An embodiment of this application provides a protection device, which is arranged at the air outlet of a fan component. The protection device includes a protection plate, and the protection plate can be switched between a first state and a second state. In the first state, the protection plate deviates from the air outlet to expose the air outlet. In the second state, the protection plate covers at least part of the air outlet, and the top surface of the protection plate facing upward is inclined so as to facilitate foreign objects to slide along the top surface.

[0005] Further, the protection device includes a first fixing member and a second fixing member arranged oppositely. Opposite ends of the protection plate are respectively rotatably connected to the first fixing member and the second fixing member, and the protection plate rotates relative to the first fixing member and the second fixing member to switch between the first state and the second state.

[0006] Further, the protection device includes a plurality of the protection plates. In the first state, a ventilation channel is formed between adjacent two of the protection plates, and the ventilation channel communicates the air outlet with the external space; in the second state, the plurality of protection plates are arranged in sequence to cover at least part of the air outlet.

[0007] Further, the protection plate is in a stepped state and includes a main body portion and a first extension portion and a second extension portion extending from the main body portion. In the second state, the first extension portion is higher than the second extension portion, and the first extension portion of one of the adjacent two protection plates is located above the second extension portion of the other.

[0008] Further, the protection device includes: a plurality of sealing members, and the plurality of sealing members are respectively fixed on the first extension portion or the second extension portion. In the second state, the sealing members are attached to the first extension portion and the second extension portion.

[0009] Further, rotating shafts are respectively provided at end portions of the plurality of protection plates. The rotating shafts are rotatably connected to the first fixing member. The protection device includes a connecting rod that connects the plurality of rotating shafts. The protection device includes an operating member that drives the connecting rod to move so as to drive the rotating shafts to rotate, and the rotating shafts drive the protection plates to rotate.

[0010] Further, a through hole for the operating member to pass through is provided on the connecting rod, and a first limiting hole is provided on the first fixing member. The operating member moves along the through hole so that one end of it is assembled into or disengaged from the first limiting hole. When one end of the operating member is assembled in the first limiting hole, the protection plate is maintained in the first state.

[0011] Further, a second limiting hole is provided on the first fixing member. The operating member moves along the through hole so that one end of it is assembled into or disengaged from the second limiting hole. When one end of the operating member is assembled in the second limiting hole, the protection plate is maintained in the second state.

[0012] Further, the protection device includes a retaining piece provided on the operating member. The retaining piece is located between the connecting rod and the first fixing member. The protection device further includes an elastic member sleeved on a part of the operating member and located between the connecting rod and the retaining piece. In the first state and the second state, when the elastic member is in a compressed state, the elastic member abuts against the retaining piece to prevent one end of the operating member from disengaging from the first limiting hole or the second limiting hole.

[0013] An embodiment of the present application further provides a unit protection assembly, including a fan assembly and the above protection device, and the protection device is provided on the fan assembly.

[0014] In some embodiments, when the protection plate in the above technical solution is in the first state, the air outlet is exposed so that the fan assembly dissipates heat through the air outlet; when the protection plate is in the second state, the protection plate covers at least part of the air outlet and its upward top surface is inclined so that sundries slide along the top surface, avoiding sundries from entering the inside of the fan assembly through the air outlet and damaging the fan assembly, and improving the service life of the fan assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the unit protection assembly according to an exemplary embodiment of the present application, wherein the protection plate is in the first state.

[0016] Figure 2 is Figure 1 a schematic diagram of the unit protection assembly shown, wherein the protection plate is in the second state.

[0017] Figure 3 is Figure 1 A schematic diagram of the protection device shown, where the protection plate is in the first state.

[0018] Figure 4 is Figure 3 A schematic diagram of the protection device shown cut along line A-A.

[0019] Figure 5 is Figure 2 A schematic diagram of the protection device shown, where the protection plate is in the second state.

[0020] Figure 6 is Figure 5 A schematic diagram of the protection device shown cut along line B-B.

[0021] Figure 7 is Figure 3 An enlarged view of the circled part C shown.

[0022] Explanation of the reference numerals in the drawings: 100, protection device; 200, fan assembly; 201, air outlet; 202, fan; 10, protection plate; 11, top surface; 12, ventilation channel; 13, main body; 14, first extension; 15, second extension; 20, seal; 30, first fixing member; 301, first mounting hole; 302, third fixing member; 31, second fixing member; 32, first limiting hole; 33, second limiting hole; 34, first connecting member; 35, second connecting member; 40, rotating shaft; 50, connecting rod; 60, operating member; 61, through hole; 70, elastic member; 80, retaining piece; 90, crank arm. Detailed implementation manners

[0023] Here, the technical solutions in the embodiments (or "implementation manners") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0024] If there are terms related to directional indication or positional relationship in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings); if this specific posture changes, then the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0025] Embodiments of the present application provide a protection device 100, which is widely used in multiple fields such as industrial production, construction, transportation, power energy, or fire emergency. During the operation of the fan assembly 200, various protection devices 100 are usually required to achieve the following purposes: such as ensuring operation safety, protecting equipment, improving the reliability of the system, and extending the service life, etc. The protection device 100 not only improves the safety of the fan assembly 200, but also helps maintain the performance of the fan assembly 200 and extend its service life.

[0026] See Figures 1 to 2 As shown, the protection device 100 is disposed at the air outlet 201 of the fan assembly 200. The protection device 100 includes a protection plate 10, and the protection plate 10 can be switched between a first state and a second state. In the first state, the protection plate 10 deviates from the air outlet 201 to expose the air outlet 201. In the second state, the protection plate 10 covers at least part of the air outlet 201, and the top surface 11 of the protection plate 10 facing upward is inclined so as to facilitate the sliding of sundries along the top surface 11.

[0027] In some embodiments, one or more protection plates 10 may be provided, and the present application does not limit the number of protection plates 10.

[0028] In the embodiments of the present application, when the protection plate 10 is in the second state, it can effectively prevent external sundries (such as dust, rain, snow, etc.) from entering the fan assembly 200, reduce the pollution and damage inside the fan assembly 200, and improve the service life of the fan assembly 200. At the same time, the top surface 11 of the protection plate 10 facing upward is inclined, so that the sundries can slide smoothly, avoiding the accumulation of sundries on the protection plate 10 and causing damage to the protection plate 10 due to pressure.

[0029] The protection device 100 includes a first fixing member 30 and a second fixing member 31 which are oppositely arranged. The opposite ends of the protection plate 10 are respectively rotatably connected to the first fixing member 30 and the second fixing member 31. The protection plate 10 rotates relative to the first fixing member 30 and the second fixing member 31 to switch between the first state and the second state. By rotating to achieve the state switch, it can quickly respond to the operation requirements, is convenient to operate, and has a high use efficiency.

[0030] In some embodiments, sliding guide rails are installed on the first fixing member 30 and the second fixing member 31, and the two ends of the protection plate 10 are provided with matching sliders or slider guide rails, so that the protection plate 10 can slide along the guide rails. By pushing and pulling the protection plate 10, the switching state of the protection plate 10 can be achieved.

[0031] In some embodiments, the protection plate 10 can also be directly rotatably connected to the fan assembly 200, so that the protection plate 10 rotates relative to the fan assembly 200 to switch between the first state and the second state.

[0032] In some embodiments, the protection device 100 further includes a first connecting member 34 and a second connecting member 35. The two ends of the first connecting member 34 are respectively fixed to the first fixing member 30 and the second fixing member 31, and the two ends of the second connecting member 35 are also respectively fixed to the first fixing member 30 and the second fixing member 31. The protection plate 10 is located between the first connecting member 34 and the second connecting member 35.

[0033] In some embodiments, the first connecting member 34 and the second connecting member 35 are made of metal, and the first fixing member 30 and the second fixing member 31 are also made of metal. The first connecting member 34 and the second connecting member 35 are fixed to the first fixing member 30 and the second fixing member 31 by welding.

[0034] See Figure 1 、 Figure 3 and Figure 4 As shown in

[0035] the protection device 100 includes a plurality of protection plates 10. In the first state, a ventilation channel 12 is formed between two adjacent protection plates 10. The ventilation channel 12 communicates the air outlet 201 with the external space, and the ventilation channel 12 can achieve ventilation and heat dissipation of the fan assembly 200. The plurality of protection plates 10 are in a grid shape, which can prevent sundries such as branches and leaves from entering the fan assembly 200 through the ventilation channel 12.

[0036] In some embodiments, an adjustable protection plate 10 is adopted, allowing the user to adjust the distance between two adjacent protection plates 10 according to actual needs to change the size of the ventilation channel 12, so as to achieve a more flexible ventilation effect.

[0037] In some embodiments, a first mounting hole 301 is provided on the first fixing member 30, and a second mounting hole (not shown) is provided on the fan assembly 200. The third fixing member 302 is assembled into the first mounting hole 301 and the second mounting hole and fixed to the fan assembly 200 to fix the first fixing member 30 and the fan assembly 200.

[0038] In some embodiments, a third mounting hole (not shown) is provided on the second fixing member 31, and a fourth mounting hole (not shown) is provided on the fan assembly 200. A fourth fixing member (not shown) is assembled into the third mounting hole and the fourth mounting hole and fixed to the fan assembly 200 to fix the second fixing member 31 and the fan assembly 200.

[0039] See Figure 2 、 Figure 5 and Figure 6As shown, in the second state, a plurality of protective plates 10 are sequentially arranged to cover at least a portion of the air outlet 201. When the fan assembly 200 is located in an outdoor environment and encounters severe rainy or snowy weather, at least a portion of the air outlet 201 can be covered by the protective plates 10 to prevent rain and snow from falling into the fan assembly 200, thereby ensuring that the fan assembly 200 can operate stably even in severe weather.

[0040] In some embodiments, the protective plate 10 is in a stepped state, including a main body 13 and a first extension portion 14 and a second extension portion 15 extending from the main body 13. In the second state, the first extension portion 14 is higher than the second extension portion 15, and the first extension portion 14 of one of two adjacent protective plates 10 is located above the second extension portion 15 of the other. The stepped protective plates 10 can increase the degree of fit between the protective plates 10, thereby improving their stability when subjected to external force impact.

[0041] In the embodiment of the present application, the protective plate 10 adopts a Z-shaped structure, which improves the strength of the protective plate 10.

[0042] In some embodiments, the protective plate 10 may also be in a straight plate shape or an arc shape, and the present application does not limit the specific shape of the protective plate 10.

[0043] In some embodiments, the protective plate 10 may be made of high-strength plastic, metal alloy, or the like to improve its durability and strength.

[0044] In some embodiments, the protective device 100 includes: a plurality of seals 20, which are respectively fixed on the first extension portion 14 or the second extension portion 15. In the second state, the seals 20 are in contact with the first extension portion 14 and the second extension portion 15 to prevent rain and snow from flowing into the fan assembly 200 through the gap between the first extension portion 14 and the second extension portion 15.

[0045] In some embodiments, the seal 20 is a sound insulation cotton, which can also play a role in sound insulation and shock absorption, and prevent friction or collision between two adjacent protective plates 10.

[0046] See also Figure 3 , Figure 5 and Figure 7 As shown, the ends of the multiple protective plates 10 are respectively provided with a rotating shaft 40, which is rotatably connected to the first fixing member 30. The protective device 100 includes a connecting rod 50, which connects the multiple rotating shafts 40. The protective device 100 includes an operating member 60, which drives the connecting rod 50 to move to rotate the rotating shaft 40, and the rotating shaft 40 rotates the protective plate 10, so that the protective plate 10 is easy to rotate and simple to operate.

[0047] In some embodiments, the protective device 100 further includes a crank arm 90. The crank arm 90 is respectively connected to the connecting rod 50 and the rotating shaft 40. When the operating member 60 drives the connecting rod 50 to move, the connecting rod 50 drives the crank arm 90 to rotate, the crank arm 90 drives the rotating shaft 40 to rotate, and the rotating shaft 40 drives the protective plate 10 to rotate.

[0048] Further, a through hole 61 for the operating member 60 to pass through is provided on the connecting rod 50, and a first limiting hole 32 is provided on the first fixing member 30. The operating member 60 moves along the through hole 61 so that one end of it is assembled into or disengaged from the first limiting hole 32, which can facilitate assembly and disassembly and improve the flexibility of operation. When one end of the operating member 60 is assembled in the first limiting hole 32, the protective plate 10 remains in the first state.

[0049] In some embodiments, a second limiting hole 33 is provided on the first fixing member 30. The operating member 60 moves along the through hole 61 so that one end of it is assembled into or disengaged from the second limiting hole 33, which can facilitate assembly and disassembly and improve the flexibility of operation. When one end of the operating member 60 is assembled in the second limiting hole 33, the protective plate 10 remains in the second state.

[0050] In the embodiments of the present application, the user manually operates to move the operating member 60 to switch the state of the protective plate 10. In addition, a hydraulic or pneumatic method can also be used to adjust the state of the protective plate 10, providing stronger supporting force and operation stability.

[0051] In some embodiments, a third limiting hole, a fourth limiting hole, etc. can be provided on the first fixing member 30, so that the operating member 60 can be fixed at multiple positions, thereby changing the state of the protective plate 10.

[0052] In some embodiments, a position sensor can also be used instead of the first limiting hole 32 and the second limiting hole 33 to control the state of the protective plate 10 through electronic signals, realizing more intelligent and automated control.

[0053] In some embodiments, the protective device 100 includes a retaining piece 80 provided on the operating member 60. The retaining piece 80 is fixed to the operating member 60. The retaining piece 80 is located between the connecting rod 50 and the first fixing member 30. When the operating member 60 disengages from the first limiting hole 32 or the second limiting hole 33, there is a gap between the retaining piece 80 and the first fixing member 30. When one end of the operating member 60 is assembled into the first limiting hole 32 or the second limiting hole 33, the retaining piece 80 is in contact with the first fixing member 30.

[0054] The protection device 100 further includes an elastic member 70. The elastic member 70 is sleeved on a part of the operating member 60 and is located between the connecting rod 50 and the retaining piece 80. When the protection plate 10 is in the first state and the second state, and the elastic member 70 is in a compressed state, one end of the elastic member 70 abuts against the connecting rod 50. Due to the reaction force of the connecting rod 50, the other end of the elastic member 70 abuts against the retaining piece 80, and one side of the retaining piece 80 abuts against the first fixing member 30 to prevent one end of the operating member 60 from disengaging from the first limiting hole 32 or the second limiting hole 33, effectively preventing the operating member 60 from accidentally disengaging from the first limiting hole 32 or the second limiting hole 33 and ensuring the safety of the protection device 100 during operation.

[0055] In some embodiments, the elastic member 70 is a compression spring.

[0056] In some embodiments, a mechanical locking device may also be used to limit the operating member 60 to prevent the operating member 60 from disengaging from the first limiting hole 32 or the second limiting hole 33.

[0057] An embodiment of the present application provides a unit protection assembly, including a fan assembly 200 and the above-mentioned protection device 100. The protection device 100 is disposed on the fan assembly 200 to protect the fan assembly 200.

[0058] See Figure 1 and Figure 2 As shown, a fan 202 is provided in the fan assembly 200. The protection device 100 is disposed above the fan 202. At this time, the protection device 100 only blocks a part of the air outlet 201. When the protection plate 10 is in the first state, multiple protection plates 10 can act as a protection net cover to block large-volume sundries such as branches and leaves from entering the fan 202 and damaging the fan 202; when the protection plate 10 is in the second state, sundries such as rain and snow in bad weather will be blocked outside by the protection plate 10, preventing low-temperature rain and snow from entering the fan 202 and causing the fan 202 to freeze and stop operating.

[0059] In some embodiments, when the protection plate 10 is in the first state and the second state, the remaining part of the air outlet 201 is in an exposed state, and the fan assembly 200 can dissipate heat and ventilate through the remaining part of the air outlet 201 to maintain the normal operation of the fan assembly 200.

[0060] In some embodiments, a protection net cover or a protection grid may be provided on the remaining part of the air outlet 201 not blocked by the protection device 100 to prevent sundries from entering the fan assembly 200 through the remaining part of the air outlet 201 and damaging the fan assembly 200.

[0061] In some embodiments, the unit protection assembly is fixed to a cold chain transport vehicle, the air outlet 201 is arranged upward, and the protection device 100 blocks a part of the air outlet 201 to protect the fan assembly 200.

[0062] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the scope of protection of this application.

Claims

1. A protective device, which is arranged at the air outlet of a fan assembly, characterized in that: The protective device includes a protective plate, which can be switched between a first state and a second state. In the first state, the protective plate deviates from the air outlet to expose the air outlet. In the second state, the protective plate covers at least a portion of the air outlet, and the upper top surface of the protective plate is inclined to facilitate debris to slide down along the top surface.

2. The protective device according to claim 1, characterized in that: The protective device includes a first fixing member and a second fixing member that are arranged opposite to each other. The opposite ends of the protective plate are rotatably connected to the first fixing member and the second fixing member respectively. The protective plate rotates relative to the first fixing member and the second fixing member to switch between the first state and the second state.

3. The protective device according to claim 2, characterized in that: The protective device includes a plurality of protective plates. In the first state, a ventilation channel is formed between two adjacent protective plates, and the ventilation channel connects the air outlet with the external space. In the second state, the plurality of protective plates are arranged in sequence to cover at least part of the air outlet.

4. The protection device according to claim 3, characterized in that: The protective plate is in a stepped state, including a main body and a first extension portion and a second extension portion extending from the main body. In the second state, the first extension portion is higher than the second extension portion, and the first extension portion of one of the two adjacent protective plates is located above the second extension portion of the other.

5. The protection device according to claim 4, characterized in that: The protection device includes: a plurality of seals, which are respectively fixed on the first extension part or the second extension part. In the second state, the seals are in contact with the first extension part and the second extension part.

6. The protection device according to claim 3, characterized in that: The ends of the plurality of protective plates are respectively provided with rotating shafts, the rotating shafts are rotatably connected to the first fixing member, the protective device includes a connecting rod, the connecting rod connects the plurality of rotating shafts, the protective device includes an operating member, the operating member drives the connecting rod to move to rotate the rotating shaft, and the rotating shaft rotates the protective plate.

7. The protection device according to claim 6, characterized in that: The connecting rod is provided with a through hole for the operating member to pass through, and the first fixing member is provided with a first limiting hole. The operating member moves along the through hole so that one end thereof is assembled to the first limiting hole or detached from the first limiting hole. When one end of the operating member is assembled in the first limiting hole, the protective plate remains in the first state.

8. The protection device according to claim 7, characterized in that: A second limiting hole is provided on the first fixing member, and the operating member moves along the through hole so that one end thereof is assembled to the second limiting hole or detached from the second limiting hole. When one end of the operating member is assembled in the second limiting hole, the protective plate remains in the second state.

9. The protection device according to claim 8, characterized in that: The protective device includes a blocking piece arranged on the operating member, and the blocking piece is located between the connecting rod and the first fixing member; the protective device also includes an elastic member, which is sleeved on a portion of the operating member and is located between the connecting rod and the blocking piece. In the first state and the second state, when the elastic member is in a compressed state, the elastic member presses against the blocking piece to prevent one end of the operating member from escaping from the first limiting hole or the second limiting hole.

10. A unit protection assembly, characterized in that: It comprises a fan assembly and a protective device as claimed in any one of claims 1 to 9, wherein the protective device is arranged on the fan assembly.

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