Low-noise anti-abrasion fan structure for air source heat pump

Abstract

The utility model relates to the technical field of dust fall and noise reduction of fans, and discloses a low-noise anti-abrasion fan structure for an air source heat pump, which comprises a casing and a partition plate fixedly connected in the casing, a dustproof mechanism and a support centering mechanism are arranged in the casing, the dustproof mechanism is arranged on the outer side of the support centering mechanism, and the support centering mechanism is arranged on the outer side of the casing. The dustproof mechanism comprises a box door, the box door is fixedly connected to one side of the machine shell, a sliding base is fixedly connected to the outer side of the machine shell, air ports are formed in the upper side of the machine shell and the interior of the box door, dust isolation plates are arranged on the upper side of the machine shell and the right side of the box door, and the supporting centering mechanism enables hydraulic pressure to support the output end of the motor. Therefore, the jumping condition of the output end of the motor is reduced, noise is reduced, the stability of the fan is improved, the dustproof mechanism effectively prevents dust and moisture from eroding the interior of the fan through the movably-arranged blocking block and an elastic structure in a matched mode, and the service life of the fan is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of dust and noise reduction technology for fans, specifically a low-noise and wear-resistant fan structure for an air source heat pump. Background Technology

[0002] The core purpose of the fan structure design in an air source heat pump is to achieve energy savings by utilizing high-grade energy to convert low-grade heat energy into high-grade heat energy. The main components of an air source heat pump include an evaporator, compressor, condenser, expansion valve, and fan. It absorbs heat from the outdoor air and then transfers it to the indoor or other spaces requiring heating. This process is primarily achieved through the evaporation and condensation of the refrigerant within the system. Specifically, the refrigerant absorbs heat from the air and evaporates in the evaporator. The vaporized refrigerant is then compressed by the compressor, increasing its temperature and pressure. It then releases heat and condenses into a liquid in the condenser. Finally, the pressure is reduced through the expansion valve, and the refrigerant returns to the evaporator to continue the cycle.

[0003] Fans play a crucial role in air source heat pumps. They are mainly used to drive airflow so that air can exchange heat through the evaporator. Fans are usually installed outdoors, where there is a lot of dust. Dust can significantly reduce the heat dissipation effect of the heat sink, increase noise, and reduce airflow. At the same time, the fan itself will vibrate when it is running, which will generate noise pollution and have an impact on the environment. Utility Model Content

[0004] The purpose of this invention is to provide a low-noise, wear-resistant fan structure for air source heat pumps to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-noise and wear-resistant fan structure for an air source heat pump, including a housing and a partition fixedly connected inside the housing, wherein a dustproof mechanism and a support and centering mechanism are provided inside the housing, and the dustproof mechanism is located outside the support and centering mechanism.

[0006] The dustproof mechanism includes a door fixedly connected to one side of the casing. A slide is fixedly connected to the outer side of the casing. Air vents are provided on the upper side of the casing and inside the door. A dustproof plate is provided on the upper side of the casing and the right side of the door. Slide rods are fixedly connected to both sides of the dustproof plate. The slide rods extend through the slide to the other side of the slide and are slidably connected to the slide. A block is slidably connected inside the air vent. A pull rod is fixedly connected inside the block. A bracket is fixedly connected inside the pull rod. A slide column is slidably connected inside the bracket. The slide column extends through the bracket to the inner side of the bracket and is fixedly connected to a circular plate-shaped structure at its end. A spring is fixedly connected between the bracket on the right side and the door. An elastic element is fixedly connected between the bracket on the upper side of the casing and the circular plate-shaped structure.

[0007] Preferably, the air vents are evenly distributed on the upper side of the housing and on the door.

[0008] Preferably, a circular baffle structure is fixedly connected to one end of the slide rod.

[0009] Preferably, the supporting and centering mechanism includes a support cover, which is fixedly connected inside the housing. A motor is fixedly connected inside the support cover, and a fan blade is fixedly connected to the output end of the motor. A pressure relief cylinder and a pressure-reducing cylinder are sleeved on the output end of the motor. The pressure relief cylinder is located on the side of the pressure-reducing cylinder near the fan blade. A liquid chamber is opened inside the pressure relief cylinder, and a push plate is slidably connected inside the liquid chamber. A push rod is fixedly connected to one side of the push plate. The push rod extends through the pressure relief cylinder to the outside of the pressure relief cylinder, and the end of the push rod is in contact with the output end of the motor. A deformation element is fixedly connected between the push plate and the inner wall of the pressure relief cylinder. A communicating groove is opened between the liquid chamber and the pressure-reducing cylinder. A top rod is slidably connected inside the pressure-reducing cylinder and is slidably connected inside the communicating groove. A support block is fixedly connected to one side of the top rod and is slidably connected inside the pressure-reducing cylinder. One side of the support block is in contact with the output end of the motor.

[0010] Preferably, the surface of the pusher plate is arc-shaped, and one side of the pusher plate is fitted to the side of the liquid cavity.

[0011] Preferably, the connecting groove is L-shaped, and the pressure relief cylinder is connected to the pressure transfer cylinder through the connecting groove.

[0012] Preferably, the inner side of the pressure cylinder has a square-shaped groove.

[0013] Compared with the prior art, this utility model provides a low-noise and wear-resistant fan structure for air source heat pumps, which has the following beneficial effects:

[0014] 1. The low-noise, wear-resistant air source heat pump fan structure provided by this utility model effectively reduces the radial runout intensity at the motor output end by setting up a support and centering mechanism. When the motor is running at high speed, due to factors such as workmanship precision and dust, the load weight at the motor output end often becomes uneven, leading to radial runout and vibration. This vibration not only reduces the motor's lifespan but also causes noise pollution. By absorbing the radial runout force at the motor output end through the pressure relief cylinder and transferring this force to the pressure transfer cylinder, the hydraulic pressure can support the motor output end, thereby reducing the runout at the motor output end, thus reducing noise and improving the fan's stability.

[0015] 2. The dustproof mechanism, through its movable blocking blocks and elastic structure, allows the fan to open the passage between the fan's interior and the outside environment when air pressure is generated. This prevents dust from entering the fan when it is not in use, without affecting operation. Simultaneously, this mechanism can slide in both directions without affecting air intake or exhaust, increasing the flexibility of the airflow path. This design effectively prevents dust and moisture from corroding the fan's interior, extending its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure and appearance of the centering and supporting mechanism in this utility model;

[0021] Figure 5 This is a schematic diagram of the support and centering mechanism in this utility model.

[0022] In the diagram: 1. Housing; 2. Partition; 3. Dustproof mechanism; 301. Door; 302. Slide; 303. Air inlet; 304. Dustproof plate; 305. Slide rod; 306. Block; 307. Pull rod; 308. Trailer; 309. Slide column; 310. Spring; 311. Elastic element; 4. Support and centering mechanism; 401. Support cover; 402. Motor; 403. Fan blade; 404. Pressure relief cylinder; 405. Pressure transfer cylinder; 406. Liquid chamber; 407. Push plate; 408. Push rod; 409. Deformation element; 410. Connecting groove; 411. Top rod; 412. Support block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-5 This utility model provides a technical solution: a low-noise and wear-resistant fan structure for an air source heat pump, including a housing 1 and a partition 2 fixedly connected inside the housing 1. The housing 1 is provided with a dustproof mechanism 3 and a support and centering mechanism 4, and the dustproof mechanism 3 is located outside the support and centering mechanism 4.

[0027] The dustproof mechanism 3 includes a door 301, which is fixedly connected to one side of the housing 1. A slide block 302 is fixedly connected to the outside of the housing 1. Air vents 303 are provided on the upper side of the housing 1 and inside the door 301. A dustproof plate 304 is provided on the upper side of the housing 1 and the right side of the door 301. Slide rods 305 are fixedly connected to both sides of the dustproof plate 304. The slide rods 305 extend through the slide block 302 to the other side of the slide block 302 and are slidably connected to the slide block 302. A block 306 is slidably connected inside the air vent 303. A pull rod 307 is fixedly connected to the inside of the block 306. A bracket 308 is fixedly connected to the inside of the pull rod 307. A slide column 309 is slidably connected inside the bracket 308. The slide column 309 extends through the bracket 308 to the inside of the bracket 308 and is fixedly connected to a round end. The plate-shaped structure has a spring 310 fixedly connected between the right-side bracket 308 and the box door 301, and an elastic element 311 fixedly connected between the upper bracket 308 and the circular plate-shaped structure. The fan is an important component for controlling airflow. The fan blades 403 are generally in direct contact with the outside air. Even when the fan is not in use, dust can still enter the fan, or moisture may enter on rainy days, affecting the fan's lifespan. The block 306 is movable and, together with the elastic structure, can open the fan's internal passage to the outside when the fan generates air pressure. This prevents dust from entering the fan when it is not in use without affecting its operation, thus increasing the fan's lifespan. This mechanism can slide in both directions without affecting air intake or exhaust, increasing the flexibility of the airflow path.

[0028] Furthermore, the air vents 303 are evenly distributed on the upper side of the housing 1 and on the door 301.

[0029] Furthermore, a circular baffle structure is fixedly connected to one end of the slide bar 305.

[0030] Example 2:

[0031] Please see Figure 1-5Furthermore, in conjunction with Embodiment 1, it is further obtained that the centering and supporting mechanism 4 includes a support cover 401, which is fixedly connected inside the housing 1. A motor 402 is fixedly connected inside the support cover 401, and a fan blade 403 is fixedly connected to the output end of the motor 402. A pressure relief cylinder 404 and a pressure-reducing cylinder 405 are sleeved on the output end of the motor 402. The pressure relief cylinder 404 is located on the side of the pressure-reducing cylinder 405 close to the fan blade 403. A liquid chamber 406 is opened inside the pressure relief cylinder 404, and a sliding liquid chamber 406 is provided inside the liquid chamber 406. A push plate 407 is dynamically connected, and a push rod 408 is fixedly connected to one side of the push plate 407. The push rod 408 extends through the pressure relief cylinder 404 to the outside of the pressure relief cylinder 404, and the end of the push rod 408 is in contact with the output end of the motor 402. A deformable part 409 is fixedly connected between the push plate 407 and the inner wall of the pressure relief cylinder 404. A connecting groove 410 is opened between the liquid cavity 406 and the pressure-reducing cylinder 405. A push rod 411 is slidably connected inside the pressure-reducing cylinder 405. The push rod 411 is slidably connected inside the connecting groove 410. A support block 412 is fixedly connected to one side of the rod 411. The support block 412 is slidably connected inside the pressure cylinder 405. One side of the support block 412 is fitted against the output end of the motor 402. When the motor 402 outputs, the load weight at the output end of the motor 402 is difficult to equalize. This is affected by factors such as workmanship precision and dust. At the same time, the high-speed rotation of the output end of the motor 402 will increase the load difference at the output end of the motor 402, resulting in radial runout and vibration. Vibration will not only reduce the life of the motor 402, but also cause noise pollution. The pressure relief cylinder 404 absorbs the force of the radial runout at the output end of the motor 402 and transfers this force into the pressure cylinder 405, so that the hydraulic pressure can support the output end of the motor 402. The pressure relief cylinder 404 is located on the side of the output end of the motor 402 with greater radial runout. At the same time, this mechanism is flexible and can change the support force according to the intensity of the runout at the output end of the motor 402, reducing the impact on the normal output of the motor 402 and better reducing the runout at the output end of the motor 402.

[0032] Furthermore, the surface of the push plate 407 is arc-shaped, and one side of the push plate 407 is fitted to the side of the liquid cavity 406.

[0033] Furthermore, the connecting groove 410 is L-shaped, and the pressure relief cylinder 404 is connected to the pressure transfer cylinder 405 through the connecting groove 410.

[0034] Furthermore, the inner side of the pressure cylinder 405 is provided with a square-shaped groove.

[0035] In actual operation, when this device is used, the user starts the motor 402 and the matching compressor, etc. When the fan blades 403 rotate, the airflow can be controlled. In heating mode, the main task of the fan is to draw in the cold air in the room and heat it through the evaporator (which is used as a condenser at this time). In cooling mode, the main task of the fan is to draw in the hot air in the room and cool it through the evaporator (which is used as an evaporator at this time). When the fan is running, the fan generates air pressure and uses the air pressure to displace the block 306 and connect it to the outside. At the same time, the push rod 408 is used to absorb the radial runout generated when the motor 402 is output, and uses the radial runout to displace the push plate 407, thereby generating hydraulic pressure to push the push rod 411 and make the support block 412 fit with the output end of the motor 402, which is used to reduce the intensity of the radial runout at the output end of the motor 402, thereby reducing the noise when the motor 402 is output.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A low-noise, wear-resistant fan structure for an air source heat pump, comprising a housing (1) and a partition (2) fixedly connected inside the housing (1), characterized in that: The casing (1) is provided with a dustproof mechanism (3) and a support and centering mechanism (4) inside, and the dustproof mechanism (3) is located on the outside of the support and centering mechanism (4); The dustproof mechanism (3) includes a door (301), which is fixedly connected to one side of the housing (1). A slide (302) is fixedly connected to the outside of the housing (1). Air vents (303) are provided on the upper side of the housing (1) and inside the door (301). A dustproof plate (304) is provided on the upper side of the housing (1) and the right side of the door (301). A slide rod (305) is fixedly connected to both sides of the dustproof plate (304). The slide rod (305) extends through the slide (302) to the other side of the slide (302) and is slidably connected to the slide (302). The air vents (303) are... An internal sliding block (306) is connected, and a pull rod (307) is fixedly connected to the inside of the block (306). A bracket (308) is fixedly connected to the inside of the pull rod (307). A sliding column (309) is slidably connected inside the bracket (308). The sliding column (309) extends through the bracket (308) to the inside of the bracket (308) and is fixedly connected to a circular plate structure at its end. A spring (310) is fixedly connected between the right side bracket (308) and the door (301). An elastic element (311) is fixedly connected between the upper bracket (308) of the housing (1) and the circular plate structure.

2. The low-noise, wear-resistant fan structure for an air source heat pump according to claim 1, characterized in that: The air inlets (303) are evenly distributed on the upper side of the housing (1) and the door (301).

3. The low-noise, wear-resistant fan structure for an air source heat pump according to claim 1, characterized in that: A circular baffle structure is fixedly connected to one end of the slide rod (305).

4. The low-noise, wear-resistant fan structure for an air source heat pump according to claim 1, characterized in that: The centering and supporting mechanism (4) includes a support cover (401), which is fixedly connected inside the housing (1). A motor (402) is fixedly connected inside the support cover (401). A fan blade (403) is fixedly connected to the output end of the motor (402). A pressure relief cylinder (404) and a pressure rotating cylinder (405) are sleeved on the output end of the motor (402). The pressure relief cylinder (404) is located on the side of the pressure rotating cylinder (405) close to the fan blade (403). A liquid chamber (406) is opened inside the pressure relief cylinder (404). A push plate (407) is slidably connected inside the liquid chamber (406). A push rod (408) is fixedly connected to one side of the push plate (407). The push rod (408) extends through the pressure relief cylinder (404) to the outside of the pressure relief cylinder (404). The end of the push rod (408) is in contact with the output end of the motor (402). A deformable part (409) is fixedly connected between the push plate (407) and the inner wall of the pressure relief cylinder (404). A connecting groove (410) is provided between the liquid chamber (406) and the pressure cylinder (405). A push rod (411) is slidably connected inside the pressure cylinder (405). The push rod (411) is slidably connected inside the connecting groove (410). A support block (412) is fixedly connected to one side of the push rod (411). The support block (412) is slidably connected inside the pressure cylinder (405). One side of the support block (412) is in contact with the output end of the motor (402).

5. The low-noise, wear-resistant fan structure for an air source heat pump according to claim 4, characterized in that: The surface of the push plate (407) is arc-shaped, and one side of the push plate (407) is attached to one side of the liquid cavity (406).

6. The low-noise, wear-resistant fan structure for an air source heat pump according to claim 4, characterized in that: The connecting groove (410) is L-shaped, and the pressure relief cylinder (404) is connected to the pressure transfer cylinder (405) through the connecting groove (410).

7. The low-noise, wear-resistant fan structure for an air source heat pump according to claim 4, characterized in that: The inner side of the pressure cylinder (405) has a square-shaped groove.

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