Low-noise warmer

Abstract

The utility model relates to the field of heaters, in particular to a low-noise heater which comprises a main machine shell, a wind wheel assembly, a PTC heating plate and an outer cover hook, the outer cover hook comprises a hanging rod and an outer rubber pad, one end of the hanging rod is arranged on the main machine shell, the outer rubber pad is located in the hanging rod and arranged on a keel in a sliding and sleeved mode, and the outer cover hook is arranged on the outer cover hook. The outer end of the hanging rod is hung on the keel, the wind wheel assembly is arranged in an air channel in the main machine shell, a built-in rubber pad is arranged at the bottom of the wind wheel assembly, the PTC heating plate is arranged at an air outlet of the air channel, and a sound absorption cotton block is fixedly bonded to the inner wall of the air channel. And the noise during the operation of the warmer is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of heaters, and specifically to a low-noise heater. Background Technology

[0002] During the cold winter, heaters are widely used in various places as an important heating device. However, traditional heaters often generate a lot of noise during operation, which seriously affects the user experience.

[0003] The connection between the main unit and the keel uses traditional fasteners, which may loosen over time and create resonance during operation, amplifying noise. Additionally, the motor inside the main unit, with its base bolted to the casing, generates vibrations that also produce noise during high-speed operation. Furthermore, the fan impeller vibrates not only due to its own structure but also due to significant airflow noise. These noise issues greatly reduce the comfort of using the heater, necessitating an optimized structural design to effectively reduce noise and improve the user experience. Utility Model Content

[0004] This invention provides a low-noise heater to address the problems of existing technologies.

[0005] The purpose of this utility model can be achieved through the following technical solution: A low-noise heater includes: a main unit shell, a fan assembly, a PTC heating plate, and an external hook. The external hook includes a hanging rod and an external rubber pad. One end of the hanging rod is set on the main unit shell, and the external rubber pad is located inside the hanging rod and slidably sleeved on the keel. The outer end of the hanging rod is hung on the keel. The fan assembly is set in the air duct inside the main unit shell. The bottom of the fan assembly is provided with an internal rubber pad. The PTC heating plate is set at the air outlet of the air duct. Sound-absorbing cotton blocks are adhered and fixed to the inner wall of the air duct.

[0006] In a further improvement, the external rubber pad is provided with a T-shaped opening, and the T-shaped opening is provided with protrusions at intervals, and the right end of the hanging rod is provided with a through hole.

[0007] In a further improvement, the main unit housing is provided with an adjustment seat, the adjustment seat is provided with a slide rail, the bottom of the slide rail is provided with a toothed groove, the left end of the hanging rod is slidably disposed in the slide rail and the bottom of the hanging rod is provided with a toothed groove matching the toothed groove.

[0008] In a further improvement, the bottom of the main unit housing is provided with a mounting plate, the mounting plate is provided with a protrusion and screw mounting holes, two sets of built-in rubber pads are symmetrically provided, the built-in rubber pads match the limiting grooves of the protrusions, the wind turbine assembly includes a motor and an impeller, the bottom of the motor is provided with a connecting plate, the connecting plate is located at the upper end of the built-in rubber pad, the motor housing is provided with bolts, the bolts pass through the connecting plate and are connected in the screw mounting holes.

[0009] As a further improvement, the built-in rubber pad has two protrusions spaced apart on its upper and lower end surfaces.

[0010] Compared with existing technologies, the advantages of this low-noise heater are as follows:

[0011] One end of the hanging rod in the external hook connects to the main unit's outer casing, while the other end hangs on the joist via an external rubber pad. This external rubber pad acts as a buffer and shock absorber, reducing vibration noise caused by unstable installation and contact with the joist. An internal rubber pad at the bottom of the impeller assembly effectively absorbs vibrations generated by the motor and impeller, preventing these vibrations from being transmitted to the main unit's outer casing. Sound-absorbing cotton blocks are pasted on the inner wall of the air duct to absorb airflow noise generated by the impeller assembly and noise from other components, preventing their propagation. This structure effectively reduces the noise of the heater during operation by addressing multiple aspects, including stable installation, vibration reduction, and sound absorption. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the present invention.

[0013] Figure 2 This is a partially enlarged structural schematic diagram of the present invention.

[0014] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0015] Figure 4 This is a structural diagram of a partial internal location of the present invention.

[0016] Figure 5 This is a schematic diagram of the mounting plate in this utility model.

[0017] Figure 6 This is a schematic diagram of the external hook structure in this utility model.

[0018] In the diagram, 1-Main unit casing, 11-Air duct, 12-Adjusting seat, 121-Slide rail, 122-Groove 1, 13-Mounting plate, 131-Protruding strip, 132-Screw mounting hole, 2-Impeller assembly, 21-Built-in rubber pad, 211-Limiting groove, 212-Protrusion 2, 22-Motor, 221-Cover, 222-Bolt, 23-Impeller, 24-Connecting plate, 3-PTC heating plate, 4-External hook, 41-Hanging rod, 411-Through hole, 412-Groove 2, 42-External rubber pad, 421-T-shaped opening, 422-Protrusion 1, 5-Keel, 6-Sound absorbing cotton block. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] The following is a description of the embodiments and appendices. Figures 1-6 The technical solution of this utility model will be further described below.

[0021] Example 1

[0022] A low-noise heater includes: a main unit housing 1, a fan assembly 2, a PTC heating plate 3, and an external hook 4. The external hook 4 includes a hanging rod 41 and an external rubber pad 42. One end of the hanging rod 41 is disposed on the main unit housing 1, and the external rubber pad 42 is located inside the hanging rod 41 and slidably sleeved on the keel 5. The outer end of the hanging rod 41 is hung on the keel 5. The fan assembly 2 is disposed in the air duct 11 inside the main unit housing 1. The bottom of the fan assembly 2 is provided with an internal rubber pad 21. The PTC heating plate 3 is disposed at the air outlet of the air duct 11. Sound-absorbing cotton blocks 6 are adhered and fixed to the inner wall of the air duct 11.

[0023] like Figures 1-5 As shown, the working principle of this utility model is as follows:

[0024] Noise is reduced by incorporating shock-absorbing and sound-absorbing structures in key areas of the heater. One end of the hanging rod 41 in the external hook 4 is connected to the main unit casing 1, and the other end is hung on the keel 5 via an external rubber pad 42. The external rubber pad 42 acts as a buffer, reducing vibration noise caused by unstable installation of the main unit contacting the keel 5. An internal rubber pad 21 is installed at the bottom of the impeller assembly 2, effectively absorbing vibrations generated by the motor 22 and impeller 23 during operation, preventing vibration from being transmitted to the main unit casing 1. Sound-absorbing cotton blocks 6 are pasted on the inner wall of the air duct 11, absorbing airflow noise generated by the impeller assembly and noise from other components within the air duct, preventing their propagation.

[0025] The sound-absorbing cotton block 6, 10mm thick, is made of fiberglass sound-absorbing cotton and adhered to the inner wall of the air duct 11 of this heater. The fiberglass sound-absorbing cotton has a porous structure, effectively absorbing mid-to-high frequency noise. Tests show that this sound-absorbing cotton can reduce noise by approximately 8-12 decibels during heater operation. Regarding airflow loss, although the fiberglass sound-absorbing cotton's good air permeability creates some resistance to airflow within the duct, actual testing shows an airflow loss of 5%-8%, which is within a reasonable range and will not significantly affect the heater's heat dissipation or heating effect. This effectively reduces noise while ensuring the normal performance of the equipment.

[0026] This structure addresses multiple aspects, including stable installation, vibration reduction, and sound absorption, effectively reducing the noise level during heater operation.

[0027] The heater was tested for noise using professional acoustic testing equipment under standard testing conditions (ambient noise below 30dB(A), simulating the actual use scenario of the heater). The various structures worked together to reduce the noise by approximately 20-26dB(A).

[0028] As a further preferred embodiment, the external rubber pad 42 is provided with a T-shaped opening 421, and protrusions 422 are provided at intervals inside the T-shaped opening 421. The right end of the hanging rod 41 is provided with a through hole 411. The T-shaped opening 421 allows the rubber pad to fit tightly against the keel 5, the protrusions 422 increase the friction with the keel 5, prevent the hanging rod 41 from sliding, and the rubber pad itself has shock-absorbing properties, further enhancing the stability of the main unit installation and reducing noise caused by shaking; the through hole 411 allows the external rubber pad 42 to be placed in it, thereby preventing the external rubber pad 42 from moving along the length of the keel, ensuring that the position of the external rubber pad 42 does not slip, and improving the installation stability of the main unit.

[0029] As a further preferred embodiment, the main unit housing 1 is provided with an adjustment seat 12, and the adjustment seat 12 is provided with a slide rail 121. The bottom of the slide rail 121 is provided with a toothed groove 122. The left end of the hanging rod 41 is slidably disposed in the slide rail 121, and the bottom of the hanging rod 41 is provided with a toothed groove 412 that matches the toothed groove 122. By adjusting the position of the hanging rod 41 in the slide rail 121, it can adapt to different keel spacings. After adjustment, the toothed groove 122 and the toothed groove 412 engage and fix, ensuring a firm installation and avoiding vibration and noise caused by improper installation.

[0030] As a further preferred embodiment, the bottom of the main unit housing 1 is provided with a mounting plate 13, the mounting plate 13 is provided with a protrusion 131 and a screw mounting hole 132, two sets of built-in rubber pads 21 are symmetrically provided, the built-in rubber pads 21 match the limiting grooves 211 of the protrusions 131, the wind turbine assembly 2 includes a motor 22 and an impeller 23, the bottom of the motor 22 is provided with a connecting plate 24, the connecting plate 24 is located at the upper end of the built-in rubber pads 21, the cover 221 of the motor 22 is provided with bolts 222, the bolts 222 pass through the connecting plate 24 and are connected in the screw mounting hole 132.

[0031] The bottom connecting plate 24 of the motor 22 of the wind turbine assembly 2 is located above the built-in rubber pad 21. The bolts 222 of the motor 22 housing 221 pass through the connecting screw mounting holes 132 of the connecting plate 24, pressing the built-in rubber pad 21 between them to ensure the stable installation of the wind turbine assembly 2. At the same time, the protrusion 131 cooperates with the limiting groove 211 to accurately position and install the built-in rubber pad 21, ensuring the stability of the built-in rubber pad 21. The motor 22 adopts a low-noise DC brushless motor. Its internal structure design makes the motor run smoothly and reduces the friction of mechanical parts. Compared with ordinary AC motors, it can reduce mechanical noise by about 30%-40%. This installation method further stabilizes the wind turbine assembly 2 and reduces operating vibration noise.

[0032] As a further preferred embodiment, the built-in rubber pad 21 has protrusions 212 spaced apart on its upper and lower surfaces. The protrusions 212 increase the distance of elastic deformation of the rubber pad, which can better disperse pressure when subjected to force, and at the same time enhance the shock absorption effect, effectively reducing the noise generated by the vibration of the motor 22 being transmitted to the main unit housing 1.

[0033] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A low-noise warmer, characterized by comprising: Include: Host shell, wind wheel assembly, PTC heating plate and external hook, the external hook includes a hanging rod and an external rubber pad, one end of the hanging rod is arranged on the host shell, the external rubber pad is located inside the hanging rod and is sleeved on the keel, the outer end of the hanging rod is hung on the keel, the wind wheel assembly is arranged in the air duct inside the host shell, the bottom of the wind wheel assembly is provided with an internal rubber pad, the PTC heating plate is arranged at the air outlet of the air duct, and the inner wall of the air duct is bonded with a sound-absorbing cotton block.

2. A low noise heater as claimed in claim 1 wherein, The external rubber pad is provided with a T-shaped opening, a convex one is arranged inside the T-shaped opening, and a through hole is arranged at the right end of the hanging rod.

3. A low noise heater as claimed in claim 1, wherein The host shell is provided with an adjusting seat, the adjusting seat is provided with a slide way, the bottom of the slide way is provided with a tooth groove one, and the left end of the hanging rod is slidably arranged in the slide way and provided with a tooth groove two matched with the tooth groove one.

4. A low noise heater as claimed in claim 1, wherein The bottom of the host shell is provided with a mounting plate, the mounting plate is provided with a convex strip and a screw mounting hole, the internal rubber pad is symmetrically provided with two groups, the internal rubber pad is matched with the limiting groove of the convex strip, the wind wheel assembly includes a motor and an impeller, the bottom of the motor is provided with a connecting plate, the connecting plate is located at the upper end of the internal rubber pad, the cover of the motor is provided with a bolt, the bolt penetrates through the connecting plate and is connected in the screw mounting hole.

5. A low noise heater as claimed in claim 4, wherein The upper and lower end faces of the internal rubber pad are provided with a convex two at intervals.

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