Warm air blower

Abstract

The invention belongs to the technical field of fan heaters, and discloses a fan heater which comprises a shell, a fan assembly and a heating assembly, the fan assembly comprises a fan support and a fan body installed on the fan support, and the heating assembly is used for heating gas generated by rotation of the fan body. A blocking structure is arranged on the shell and / or the fan support so that the space in the shell can be divided into a gas circulation cavity and at least one sound insulation cavity, and the fan assembly and the heating assembly are both arranged in the gas circulation cavity. On one hand, the space in the shell is divided into the gas circulation cavity and the at least one sound insulation cavity by the blocking structure, so that the space in the shell is divided into a plurality of small closed spaces, reflection and resonance of sound in the cavity are reduced, and the sound in the cavity is remarkably reduced. And on the other hand, the effect of guiding the airflow direction can be achieved, and therefore the purposes of optimizing the airflow path in the fan heater, reducing airflow turbulence and vortex noise and improving airflow stability are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air heaters, and in particular to an air heater. Background Art

[0002] When the heaters on the market are running, the noise problem has become the main pain point in the user experience, which is specifically manifested in the following aspects:

[0003] First: the problem of cavity sound. The cavity structure inside the heater is prone to resonance and reflection, resulting in obvious cavity sound during operation, especially for large-sized heaters. The large cavity resonance makes the noise particularly harsh.

[0004] Second: air flow vortex noise. The cavity is large, and the fan blades rotate, which easily forms vortices in the air flow channel except for the air inlet area, causing air flow turbulence sound, which is amplified through the cavity. Summary of the invention

[0005] The object of the present invention is to provide a heater, the internal cavity of which is divided into multiple small enclosed spaces, which reduces the reflection and resonance of sound in the cavity, significantly reduces the cavity sound, and can optimize the airflow path, reduce airflow turbulence and eddy noise, and improve airflow stability.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The present invention discloses a heater, comprising a shell, a fan assembly and a heating assembly, wherein the fan assembly comprises a fan bracket and a fan body installed on the fan bracket, and the heating assembly is used to heat the gas generated by the rotation of the fan body; wherein a barrier structure is provided on the shell and / or the fan bracket to separate the space in the shell into a gas circulation cavity and at least one sound insulation cavity, and the fan assembly and the heating assembly are both arranged in the gas circulation cavity.

[0008] In some embodiments, the fan body is provided with a first baffle portion extending toward the air inlet side of the casing, and the air inlet side of the casing has a second baffle portion extending toward the air outlet side of the casing, and the first baffle portion and the second baffle portion constitute the barrier structure.

[0009] In some specific embodiments, along the airflow direction, the first baffle portion and the second baffle portion are at least partially overlapped.

[0010] In some more specific embodiments, the first baffle portion and the fan bracket are integrally formed; or, the first baffle portion and the fan bracket are detachably connected.

[0011] In some embodiments, a first stop plate extending toward the air inlet side of the housing is provided on the fan body, an end of the first stop plate abuts against an inner wall of the air inlet side of the housing, and the first stop plate constitutes the barrier structure.

[0012] In some further embodiments, the first stop plate is detachably connected to the fan bracket.

[0013] In some embodiments, the outer shell includes a front shell and a rear shell, the front shell is provided with an air outlet, the rear shell is provided with an air inlet, and the barrier structure is provided on the front shell and / or the rear shell.

[0014] In some embodiments, a second stop plate is provided on one of the front shell and the rear shell, the second stop plate abuts against the other of the front shell and the rear shell, and the second stop plate constitutes the blocking structure.

[0015] In some specific embodiments, a third stop plate is provided on the front shell, and a fourth stop plate is provided on the rear shell, the third stop plate extends in a direction close to the rear shell, and the fourth stop plate extends in a direction close to the front shell, wherein: one end of the third stop plate toward the rear shell abuts or clamps with one end of the fourth stop plate toward the front shell; or, along the gas flow direction, the third stop plate and the fourth stop plate are partially overlapped.

[0016] In some embodiments, there are two barrier structures, which are arranged at intervals along the height direction of the heater, forming the gas flow cavity between the two barrier structures, and the fan assembly and the heating assembly are arranged between the two barrier structures.

[0017] Beneficial effects of the present invention: Since the heater disclosed in the present invention is provided with a barrier structure on the shell and / or the fan bracket, the barrier structure divides the space inside the shell into a gas circulation cavity and at least one sound insulation cavity, so that the space inside the shell is divided into a plurality of small enclosed spaces, reducing the reflection and resonance of sound in the cavity, thereby significantly reducing the cavity sound. Since the fan body and the heating component are both arranged in the gas circulation cavity, during the normal operation of the heater, the barrier structure can also play a role in guiding the flow direction of the airflow, thereby achieving the purpose of optimizing the airflow path inside the heater, reducing airflow turbulence and eddy noise, and improving the stability of the airflow.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1is a structural schematic diagram of a heater according to a first embodiment of the present invention;

[0020] Figure 2 is a cross-sectional view of a heater according to a first embodiment of the present invention;

[0021] Figure 3 is a cross-sectional view of a heater according to a second embodiment of the present invention;

[0022] Figure 4 is a cross-sectional view of a heater according to a third embodiment of the present invention;

[0023] Figure 5 It is a cross-sectional view of a heater according to a fourth embodiment of the present invention.

[0024] Reference numerals:

[0025] 100, housing; 101, soundproof cavity; 102, gas flow cavity; 103, second stopper plate; 110, front housing; 111, third stopper plate; 120, rear housing; 121, second stopper plate portion; 122, fourth stopper plate;

[0026] 200, fan assembly; 210, fan bracket; 211, first baffle portion; 212, first stop plate; 220, fan body;

[0027] 300. Heating component. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the description of this embodiment, the terms "upper", "lower", "left", "right", "front", "rear" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] The invention discloses a fan heater, referring to Figure 1-Figure 5 As shown, the heater includes a housing 100, a fan assembly 200 and a heating assembly 300. The fan assembly 200 includes a fan bracket 210 and a fan body 220 mounted on the fan bracket 210. The heating assembly 300 is used to heat the gas generated by the rotation of the fan body 220. The housing 100 and / or the fan bracket 210 are provided with a barrier structure to separate the space in the housing 100 into a gas circulation chamber 102 and at least one sound insulation chamber 101. The fan assembly 200 and the heating assembly 300 are both arranged in the gas circulation chamber 102. It can be understood that in the actual working process, the fan body 220 rotates to drive the gas into the interior of the heater, and the gas is discharged after being heated by the heating assembly 300, so as to realize the function of the heater to blow out warm air. Since the heater disclosed in the present invention is provided with a barrier structure on the housing 100 and / or the fan bracket 210, the barrier structure divides the space inside the housing 100 into a gas circulation cavity 102 and at least one sound insulation cavity 101, so that the space inside the housing 100 is divided into a plurality of small enclosed spaces, reducing the reflection and resonance of sound in the cavity, thereby significantly reducing the cavity sound. Since the fan body 220 and the heating assembly 300 are both arranged in the gas circulation cavity 102, during the normal operation of the heater, the barrier structure can also play a role in guiding the flow direction of the airflow, thereby achieving the purpose of optimizing the airflow path inside the heater, reducing airflow turbulence and eddy noise, and improving the stability of the airflow.

[0032] Optionally, there are two barrier structures, which are arranged at intervals along the height direction of the heater, and a gas circulation cavity 102 is formed between the two barrier structures, and the fan assembly 200 and the heating assembly 300 are arranged between the two barrier structures. It can be understood that the provision of two barrier structures can separate the internal space of the heater into two soundproof cavities 101 and a gas circulation cavity 102, which can further reduce the reflection and resonance of sound in the cavity, thereby significantly reducing the cavity sound. The two barrier structures can limit the airflow to flow in a designated area, further optimize the airflow path inside the heater, reduce airflow turbulence and eddy noise, and improve airflow stability.

[0033] In the embodiments of the present invention, the barrier structure has various forms. The specific structures of the barrier structures of four specific embodiments of the present invention are described below.

[0034] Embodiment 1:

[0035] refer to Figure 1 and Figure 2 As shown, the housing 100 includes a front shell 110 and a rear shell 120. The front shell 110 is provided with an air outlet, and the rear shell 120 is provided with an air inlet. For the entire housing 100, the front shell 110 is the air outlet side, and the rear shell 120 is the air inlet side. The fan body 220 is provided with a first baffle portion 211 extending toward the air inlet side of the housing 100, and the air inlet side of the housing 100 has a second baffle portion 121 extending toward the air outlet side of the housing 100. The first baffle portion 211 and the second baffle portion 121 constitute a barrier structure. It can be understood that in the actual installation process, the fan assembly 200 and the heating assembly 300 are assembled and installed in the rear shell 120. During the installation process, it is necessary to ensure that the first baffle portion 211 and the second baffle portion 121 are accurately docked, and then the front shell 110 is first installed on the rear shell 120. As a result, the first baffle portion 211, the second baffle portion 121, a portion of the rear shell 120 and a portion of the fan bracket 210 are combined to form a gas circulation cavity 102 with a smaller volume. On the one hand, it can reduce the reflection and resonance of sound in the cavity, thereby significantly reducing the cavity sound. On the other hand, it optimizes the airflow path inside the heater, reduces airflow turbulence and eddy noise, and improves airflow stability.

[0036] Optionally, along the airflow direction, the first baffle portion 211 and the second baffle portion 121 are at least partially overlapped. It can be understood that along the airflow direction, the first baffle portion 211 and the second baffle portion 121 are at least partially overlapped, which can ensure that the gas flow cavity 102 is closed relative to the sound insulation cavity 101, which is conducive to further reducing the reflection and resonance of the sound in the cavity, thereby significantly reducing the cavity sound.

[0037] Optionally, the ends of the first baffle portion 211 and / or the second baffle portion 121 facing each other are provided with shock absorbers. It is understandable that during the rotation of the fan body 220, the fan body 220 will vibrate, and the ends of the first baffle portion 211 and / or the second baffle portion 121 facing each other are provided with shock absorbers to prevent the vibration of the fan body 220 from being transmitted to the housing 100 to generate resonance and noise amplification through the housing 100, thereby further reducing the working noise of the heater. The shock absorber can be selected from materials such as sound-absorbing cotton or suction foam according to actual needs.

[0038] Optionally, the first baffle portion 211 and / or the second baffle portion 121 are both arc-shaped structures. In actual operation, the arc-shaped first baffle portion 211 and / or the second baffle portion 121 can optimize the airflow path inside the heater, which is beneficial to further reduce airflow turbulence and eddy noise and improve airflow stability.

[0039] Optionally, the first baffle portion 211 and the fan bracket 210 are integrally formed. Therefore, in the actual installation process, there is no need to install the first baffle portion 211 on the fan bracket 210, which is conducive to simplifying the assembly process of the heater, thereby helping to improve the manufacturing efficiency of the heater. In an alternative embodiment, the first baffle portion 211 and the fan bracket 210 are detachably connected. Compared with the structure in which the first baffle portion 211 and the fan bracket 210 are integrally formed, the detachable connection between the first baffle portion 211 and the fan bracket 210 can simplify the structure of the fan bracket 210, facilitate the manufacture of the first baffle portion 211 and the fan bracket 210, and thus reduce the manufacturing cost of the entire fan bracket 210.

[0040] Embodiment 2:

[0041] refer to Figure 3 As shown, the housing 100 includes a front housing 110 and a rear housing 120. The front housing 110 is provided with an air outlet, and the rear housing 120 is provided with an air inlet. For the entire housing 100, the front housing 110 is the air outlet side, and the rear housing 120 is the air inlet side. The fan body 220 is provided with a first stopper plate 212 extending toward the air inlet side of the housing 100. The end of the first stopper plate 212 abuts against the inner wall of the air inlet side of the housing 100, and the first stopper plate 212 constitutes a blocking structure. It can be understood that, compared with the split-type blocking structure, in this embodiment, a first stopper plate 212 of a sufficiently large size is directly provided on the fan bracket 210 as a blocking structure, and there is no need to provide a blocking structure on the front housing 110 and / or the rear housing 120, which is conducive to simplifying the structure of the front housing 110 and the rear housing 120, reducing the manufacturing cost of the housing 100, and thus reducing the manufacturing cost of the heater.

[0042] Optionally, a shock absorber is provided between the first stop plate 212 and the inner wall of the air inlet side. It is understandable that during the rotation of the fan body 220, the fan body 220 generates vibrations, and shock absorbers are provided at the ends of the first baffle portion 211 and / or the second baffle portion 121 facing each other to prevent the vibration of the fan body 220 from being transmitted to the housing 100 to generate resonance and noise amplification through the housing 100, thereby further reducing the working noise of the heater. The shock absorber can be selected from materials such as sound-absorbing cotton or absorbent foam according to actual needs.

[0043] Optionally, the first stopper plate 212 is an arc-shaped structure. In actual operation, the first stopper plate 212 with an arc-shaped structure can optimize the airflow path inside the heater, which is beneficial to further reduce airflow turbulence and eddy noise and improve airflow stability.

[0044] Optionally, the first stop plate 212 is detachably connected to the fan bracket 210. It is understandable that, compared with the first baffle portion 211 in the first embodiment, the size of the first stop plate 212 of this embodiment is relatively large, and making the first stop plate 212 and the fan body 220 into a detachable structure can simplify the structure of the fan bracket 210, which is conducive to reducing the manufacturing cost of the fan assembly 200.

[0045] Embodiment three:

[0046] refer to Figure 4 As shown, the housing 100 includes a front housing 110 and a rear housing 120, the front housing 110 is provided with an air outlet, the rear housing 120 is provided with an air inlet, and the barrier structure is provided on the front housing 110 or the rear housing 120. It can be understood that installing the barrier structure on the front housing 110 or the rear housing 120 can simplify the structure of the fan bracket 210, and when the fan assembly 200 and the heating assembly 300 are installed inside the housing 100, there is no need for alignment and other operations, which is convenient for installation. At the same time, since the barrier structure is not provided on the fan bracket 210, the phenomenon of preventing the vibration of the fan body 220 from being transmitted to the housing 100 to generate resonance and the noise from being amplified by the housing 100 is eliminated, which is conducive to further reducing the working noise of the heater.

[0047] Optionally, a second stop plate 103 is provided on the rear shell 120, and the second stop plate 103 abuts against the front shell 110, and the second stop plate 103 constitutes a barrier structure. Further optionally, a shock absorber is provided at the end of the second stop plate 103, and the additional shock absorber can prevent the vibration of the rear shell 120 from causing the second stop plate 103 to continuously collide with the front shell 110 during the actual working process. On the one hand, it avoids the accidental breakage of the second stop plate 103, and on the other hand, it can further reduce the working noise of the heater. The shock absorber can be selected from materials such as sound-absorbing cotton or suction foam according to actual needs. Of course, in this embodiment, the second stop plate 103 can also be provided on the front shell 110, and the end of the second stop plate 103 away from the front shell 110 abuts against the rear shell 120.

[0048] Optionally, the second stop plate 103 is an arc-shaped structure. In actual operation, the arc-shaped second stop plate 103 can optimize the airflow path inside the heater, which is beneficial to further reduce airflow turbulence and eddy noise and improve airflow stability.

[0049] Embodiment 4:

[0050] refer to Figure 5As shown, the housing 100 includes a front housing 110 and a rear housing 120, the front housing 110 is provided with an air outlet, the rear housing 120 is provided with an air inlet, and the barrier structure is provided on the front housing 110 and the rear housing 120. A third stop plate 111 is provided on the front housing 110, and a fourth stop plate 122 is provided on the rear housing 120. The third stop plate 111 extends in a direction close to the rear housing 120, and the fourth stop plate 122 extends in a direction close to the front housing 110. It can be understood that the third stop plate 111 is provided on the front housing 110, and the fourth stop plate 122 is provided on the rear housing 120, so that the sizes of the third stop plate 111 and the fourth stop plate 122 can be controlled to avoid damage to the third stop plate 111 and the fourth stop plate 122 during transportation.

[0051] Optionally, one end of the third stop plate 111 facing the rear shell 120 abuts or snaps against one end of the fourth stop plate 122 facing the front shell 110. In this way, it can be ensured that the gas circulation cavity 102 is closed relative to the sound insulation cavity 101, which is conducive to further reducing the reflection and resonance of the sound in the cavity, thereby significantly reducing the cavity sound. Further optionally, the ends of the third stop plate 111 and / or the fourth stop plate 122 are provided with shock absorbers, and the additional shock absorbers can avoid the phenomenon of continuous collision between the third stop plate 111 and the fourth stop plate 122 during actual operation. On the one hand, it avoids the phenomenon of accidental breakage of the third stop plate 111 and the fourth stop plate 122, and on the other hand, it can further reduce the working noise of the heater. The shock absorber can be selected from materials such as sound-absorbing cotton or attractive foam according to actual needs.

[0052] Optionally, along the gas flow direction, the third stop plate 111 and the fourth stop plate 122 are partially overlapped. Thus, it can be ensured that the gas flow cavity 102 is closed relative to the sound insulation cavity 101, which is conducive to further reducing the reflection and resonance of the sound in the cavity, thereby significantly reducing the cavity sound.

[0053] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A fan heater, characterized in that: The invention comprises a housing (100), a fan assembly (200) and a heating assembly (300), wherein the fan assembly (200) comprises a fan bracket (210) and a fan body (220) mounted on the fan bracket (210), and the heating assembly (300) is used for heating gas generated by the rotation of the fan body (220); wherein: The housing (100) and / or the fan bracket (210) are provided with a barrier structure to separate the space inside the housing (100) into a gas circulation chamber (102) and at least one sound insulation chamber (101); the fan assembly (200) and the heating assembly (300) are both arranged in the gas circulation chamber (102).

2. The air heater according to claim 1, characterized in that: The fan body (220) is provided with a first baffle portion (211) extending toward the air inlet side of the housing (100), and the air inlet side of the housing (100) has a second baffle portion (121) extending toward the air outlet side of the housing (100), and the first baffle portion (211) and the second baffle portion (121) constitute the barrier structure.

3. The air heater according to claim 2, characterized in that: Along the airflow direction, at least parts of the first baffle portion (211) and the second baffle portion (121) are arranged to overlap.

4. The air heater according to claim 2, characterized in that: The first baffle portion (211) and the fan bracket (210) are integrally formed; or, The first baffle portion (211) is detachably connected to the fan bracket (210).

5. The air heater according to claim 1, characterized in that: The fan body (220) is provided with a first stop plate (212) extending toward the air inlet side of the housing (100), the end of the first stop plate (212) abuts against the inner wall of the air inlet side of the housing (100), and the first stop plate (212) constitutes the barrier structure.

6. The air heater according to claim 5, characterized in that: The first stop plate (212) is detachably connected to the fan bracket (210).

7. The air heater according to claim 1, characterized in that: The housing (100) comprises a front shell (110) and a rear shell (120); the front shell (110) is provided with an air outlet, the rear shell (120) is provided with an air inlet, and the barrier structure is provided on the front shell (110) and / or the rear shell (120).

8. The air heater according to claim 7, characterized in that: A second stop plate (103) is provided on one of the front shell (110) and the rear shell (120), and the second stop plate (103) stops on the other of the front shell (110) and the rear shell (120), and the second stop plate (103) constitutes the blocking structure.

9. The air heater according to claim 7, characterized in that: The front shell (110) is provided with a third stop plate (111), the rear shell (120) is provided with a fourth stop plate (122), the third stop plate (111) extends in a direction close to the rear shell (120), and the fourth stop plate (122) extends in a direction close to the front shell (110), wherein: One end of the third stop plate (111) facing the rear shell (120) is in abutment or clamped with one end of the fourth stop plate (122) facing the front shell (110); or, Along the gas flow direction, the third stop plate (111) and the fourth stop plate (122) are partially overlapped.

10. The air heater according to any one of claims 1 to 9, characterized in that: There are two barrier structures, which are arranged at intervals along the height direction of the heater, and the gas flow cavity (102) is formed between the two barrier structures, and the fan assembly (200) and the heating assembly (300) are arranged between the two barrier structures.

Images