Fan system of fan heater and fan heater

Abstract

The utility model belongs to the technical field of fan heaters, and discloses a fan system of a fan heater and the fan heater, the fan system of the fan heater comprises a fan support and at least two fan bodies, the fan support is provided with at least two guide vane structures at intervals in the first direction, and the at least two fan bodies are installed on the fan support. Each fan body corresponds to one guide vane structure and can drive airflow to move in the second direction, an included angle is formed between the first direction and the second direction, and the rotating speeds of the at least two fan bodies are different. Due to the fact that the guide vane structure is arranged on the fan support, the guide vane structure can guide rotating airflow to axial air outlet, airflow loss can be effectively reduced, and turbulence noise can be reduced. The rotating speeds of the at least two fan bodies are different, so that the phenomenon that two close frequencies interfere with each other, beat frequency is generated, and abnormal sound of people is more obvious can be avoided, and meanwhile, noise peak value superposition caused by motor vibration of the fan bodies is also avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fan heater, especially to a fan system of fan heater and fan heater. BACKGROUND

[0002] The axial flow fan is commonly used as the fan system in the fan heater, the air outlet of the axial flow fan usually has high rotational speed, the outlet PTC channel is usually a straight channel, the high-speed rotational airflow impacts, causes the flow rate loss, and the turbulence increases, and the product as a whole shows that the air outlet speed is low, the noise is loud, the air supply distance is short, and the user experience is poor. SUMMARY

[0003] The first purpose of the utility model is to provide a fan system of fan heater, the air outlet speed is large, the noise is small, the air supply distance is far, and the user experience is good.

[0004] The second purpose of the utility model is to provide a fan heater, the air outlet speed of the fan heater is large, the noise is small, the air supply distance is far, and the user experience is good.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] The utility model discloses a fan system of fan heater, which comprises a fan bracket, at least two guide vane structures are arranged on the fan bracket at intervals along a first direction, at least two fan bodies are installed on the fan bracket, each fan body is provided with a corresponding guide vane structure and can drive airflow to move along a second direction, the first direction and the second direction are arranged at an angle, and the rotating speeds of the at least two fan bodies are different.

[0007] In some embodiments, each fan body is fixed to the fan bracket by at least one fixing member.

[0008] In some specific embodiments, at least one mounting ear is arranged on each fan body, the fixing member is connected to the fan body through the mounting ear, and the fan body is fixed to the fan bracket.

[0009] In some more specific embodiments, a limiting portion for limiting the mounting ear is arranged on the fan bracket.

[0010] In some optional embodiments, the limiting portion is an L-shaped protrusion, and two convex edges of the L-shaped protrusion are respectively abutted on two side walls arranged adjacent to the mounting ear.

[0011] The utility model discloses still disclose a kind of fan heaters, including the fan system of the fan heater as described in the foregoing, shell and heating system, the shell has air inlet and air outlet, the fan system of the fan heater and the heating system are installed in the shell, the fan system of the fan heater is arranged between the air inlet and the air outlet, the heating system is located between the fan system of the fan heater and the air outlet.

[0012] In some embodiments, the heating system includes a heating bracket and a heating element, the heating bracket is connected with the fan bracket, the heating bracket has a mounting slot arranged through, and the heating element is installed in the mounting slot.

[0013] In some specific embodiments, the inner side wall of the mounting slot has a clamping portion arranged around the contour of the mounting slot, and the heating element is installed on the clamping portion.

[0014] In some more specific embodiments, the fan body, the fan bracket and the heating bracket are connected by at least one fixing member.

[0015] In some optional embodiments, at least one mounting ear is provided on each fan body, a plug cylinder and a first mounting hole arranged through the plug cylinder are provided on the fan bracket, a plug column matched with the plug cylinder is provided on the heating bracket, and a second mounting hole is provided on the plug column, and the fixing member is connected in sequence through the mounting ear, the first mounting hole and the second mounting hole to fix the fan body, the fan bracket and the heating bracket as a whole.

[0016] The utility model has the advantages that: the guide vane structure is arranged on the fan bracket, the guide vane structure can guide the rotational flow to the axial outflow, which can effectively reduce the flow loss, the flow impact in the flow passage is small, the flow field is smooth, and the turbulent noise can be reduced. The rotating speeds of the at least two fan bodies are different, which can avoid mutual interference of two close frequencies and generation of beat frequency phenomenon, so that the abnormal sound heard by people is more obvious, and the noise peak value caused by the motor vibration of the fan body is avoided.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a partial structure schematic view of the fan heater of the utility model embodiment;

[0019] Figure 2 is Figure 1 the exploded structure schematic view of the structure shown.

[0020] REFERENCE NUMERALS:

[0021] 100, fan system; 110, fan support; 111, guide vane structure; 112, limiting part; 113, insertion cylinder; 114, first mounting hole; 120, fan body; 121, mounting ear;

[0022] 200, heating system; 210, heating support; 211, mounting groove; 212, clamping part; 213, insertion column; 214, second mounting hole; 220, heating element;

[0023] 300, fixing element. DETAILED DESCRIPTION

[0024] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0025] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In the description of the embodiment, the terms "upper", "lower", "left", "right", "front", "back" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0027] The utility model discloses a kind of fan systems of fan heater (hereinafter referred to as fan system 100), refer to Figure 1 And Figure 2As shown, the fan system 100 comprises a fan support 110 and at least two fan bodies 120, the fan support 110 is provided with at least two guide vane structures 111 which are spaced apart along a first direction; the at least two fan bodies 120 are installed on the fan support 110, each fan body 120 is provided with a guide vane structure 111 and can drive airflow to move along a second direction, the first direction and the second direction are arranged at an angle, and the rotating speeds of the at least two fan bodies 120 are different. It can be understood that, since the guide vane structure 111 is arranged on the fan support 110, the guide vane structure 111 can guide the rotational airflow to be axial, which can effectively reduce the airflow loss, and at the same time, the airflow impact in the flow channel is small, the flow field is smooth, and the turbulent noise can be reduced. When the number of fan bodies 120 is two, two guide vane structures 111 are added on the fan support 110, compared with the existing fan system, the air volume of the fan system 100 of the embodiment increases by 5% and the blowing distance increases by about 0.6m at the same rotating speed. To achieve the same air outlet speed (for example, 3.0m / s), the rotating speed of the fan system 100 of the embodiment is reduced by 200rpm, and the noise is reduced by about 2db. The rotating speeds of the at least two fan bodies 120 are different, which can avoid mutual interference of two close frequencies and generate beat frequency phenomenon, so that the abnormal sound heard by people is more obvious; at the same time, the noise peak value caused by the vibration of the motor of the fan body 120 is avoided.

[0028] Optionally, the first direction is the height direction of the fan heater. In actual use, the lower fan body 120 has a high rotating speed, and the air outlet speed is low at the top and high at the bottom. When the distance is far, the bottom air temperature is higher, and the blowing experience is better. If the rotating speed difference is too large, it will cause obvious speed difference between the upper and lower air. In order to solve this problem, the fan body 120 located at the upper position can be selected to have a large installation angle; the fan body 120 located at the lower position can be selected to have a small installation angle, so as to meet the speed difference between the upper and lower positions, and the air volume of the upper and lower positions is uniform; and the guide vane structures 111 at the upper and lower positions should be made to have different inlet and outlet angles.

[0029] Optionally, the difference between the base frequency noises of the two fan bodies 120 is designed to be more than 3Hz, that is, the rotating speed difference is more than 180rpm.

[0030] Reference Figure 2 As shown, each fan body 120 is fixed to the fan support 110 by at least one fixing member 300. It can be understood that, by fixing the fan body 120 to the fan support 110 through the fixing member 300, on the one hand, the installation and disassembly of the fan body 120 are facilitated, so as to facilitate the assembly and maintenance of the fan system 100, and on the other hand, the installation stability of the fan body 120 is improved, and the working noise caused by unstable installation of the fan body 120 is reduced.

[0031] Optionally, at least one mounting lug 121 is arranged on each fan body 120, and the fixing member 300 is connected with the fan body 120 through the mounting lug 121 to fix the fan body 120 to the fan bracket 110. It can be understood that the fixing of the fan body 120 to the fan bracket 110 is realized by arranging the mounting lug 121 on the fan body 120, which can simplify the fan body 120 and facilitate the installation of the fan body 120, thereby facilitating the maintenance and assembly of the fan body 120. In the embodiment, the number of mounting lugs 121 is four, and they are distributed in a rectangular shape.

[0032] Further optionally, the mounting lug 121 is used to be connected with the fan bracket 110, and the fan bracket 110 is provided with a limiting portion 112 for limiting the mounting lug 121. It can be understood that the limiting portion 112 arranged on the fan bracket 110 can facilitate the positioning and installation of the fan body 120 during the assembly of the fan body 120, and can limit the fan body 120 after the installation of the fan body 120, thereby reducing the working noise of the fan body 120 caused by unstable installation.

[0033] Still further optionally, the limiting portion 112 is an L-shaped protrusion, and two convex edges of the L-shaped protrusion are respectively abutted on two side walls of the mounting lug 121 arranged adjacent to each other. It can be understood that, in the actual installation process, only the two side walls of the corner of the mounting lug 121 need to be abutted on the two convex edges of the L-shaped protrusion, and this limiting mode is simple and has good reliability. Of course, it needs to be supplemented here that in other embodiments of the utility model, the limiting portion 112 can be a clamping protrusion, and the mounting lug 121 is provided with a clamping hole matched with the clamping protrusion. That is, in other embodiments of the utility model, the structure of the limiting portion 112 can also be selected according to actual needs, and is not limited to the above description.

[0034] The utility model also discloses a kind of fan heater, reference Figure 1 And Figure 2 As shown, including fan system 100 as in the preceding, shell and heating system 200, shell has air inlet and air outlet, fan system 100 and heating system 200 are installed in shell, fan system 100 is arranged between air inlet and air outlet, heating system 200 is located between fan system 100 and air outlet. Since the fan heater has the fan system 100 described above, and the fan bracket 110 of the fan system 100 is provided with the guide vane structure 111, the guide vane structure 111 can guide the rotational flow to the axial air outlet, which can effectively reduce the airflow loss, while the airflow impact in the flow passage is small, the flow field is smooth, and the turbulent noise can be reduced. The rotational speeds of the two fan bodies 120 are different, which can avoid mutual interference between two close frequencies and generate beat frequency phenomenon, resulting in more obvious abnormal sound heard by human; At the same time, it avoids the superposition of noise peaks caused by motor vibration of fan body 120.

[0035] ReferenceFigure 2 As shown, the heating system 200 comprises a heating bracket 210 and a heating member 220, the heating bracket 210 is connected with the fan bracket 110, the heating bracket 210 has a mounting groove 211 arranged through the heating bracket 210, and the heating member 220 is mounted in the mounting groove 211. It can be understood that the mounting groove 211 is arranged on the heating bracket 210, and the heating member 220 is mounted in the mounting groove 211, which can ensure the installation stability of the heating member 220, and can reduce the size of the entire fan heater along the second direction, which is beneficial to realize the miniaturization design of the fan heater.

[0036] Optionally, the inner side wall of the mounting groove 211 has a clamping portion 212 arranged around the contour of the mounting groove 211, and the heating member 220 is mounted on the clamping portion 212. It can be understood that the clamping portion 212 is used to connect the heating member 220 and the heating bracket 210, and no screws or other connecting members are needed, so that the installation and disassembly of the heating member 220 are more convenient, thereby facilitating the assembly and maintenance of the fan heater.

[0037] Optionally, the fan body 120, the fan bracket 110 and the heating bracket 210 are connected through at least one fixing member 300. It can be understood that one fixing member 300 passes through the fan body 120, the fan bracket 110 and the heating bracket 210 in sequence to realize the connection of the three, compared with the scheme that the fan body 120 is first mounted on the fan bracket 110, and then the heating bracket 210 is mounted on the fan bracket 110, the connection mode of the embodiment reduces the number of fixing members 300, facilitates the assembly of the fan heater, improves the assembly efficiency of the fan heater, and reduces the manufacturing cost of the fan heater. In the embodiment, each fan body 120 is connected with the fan bracket 110 and the heating bracket 210 through four fixing members 300.

[0038] Further, each fan body 120 is provided with at least one mounting lug 121, the fan support 110 is provided with a plug cylinder 113 and a first mounting hole 114 penetrating the plug cylinder 113, the heating support 210 is provided with a plug column 213 matched with the plug cylinder 113, and the plug column 213 is provided with a second mounting hole 214, and the fixing member 300 is connected in sequence through the mounting lug 121, the first mounting hole 114 and the second mounting hole 214, so as to fix the fan body 120, the fan support 110 and the heating support 210 as a whole. It can be understood that, in the actual assembly process, the fan support 110 and the heating support 210 are first aligned, so that the plug column 213 is inserted into the plug cylinder 113, then the fan body 120 is placed on the fan support 110, and finally the fixing member 300 is connected in sequence through the mounting lug 121, the first mounting hole 114 and the second mounting hole 214, so as to realize the connection of the fan body 120, the fan support 110 and the heating support 210. This connection structure, on the one hand, reduces the number of fixing members 300, facilitates the assembly of the fan heater, improves the assembly efficiency of the fan heater, and reduces the manufacturing cost of the fan heater, and on the other hand, the cooperation of the plug column 213 and the plug cylinder 113 can improve the connection stability of the heating support 210 and the fan support 110.

[0039] It should be noted that the fixing member 300 in the embodiment is a screw, and in other embodiments of the utility model, the fixing member 300 can also select a fixing pin or a rivet and other connecting structural members according to actual needs, and is not limited to the screw in the embodiment.

[0040] In the description of the specification, the description referring to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the utility model. In the specification, the illustrative description 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.

[0041] Obviously, the above embodiments of the utility model are only for clear illustration of the utility model, and are not a limitation on the implementation mode of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to exhaust all the implementation modes. Any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A blower system of a fan heater, characterized by, The fan system comprises: a fan support (110) provided with at least two guide vane structures (111) at intervals along a first direction; at least two fan bodies (120) mounted on the fan support (110), each of the fan bodies (120) corresponding to one of the guide vane structures (111) and capable of driving airflow to move along a second direction, the first direction being at an angle to the second direction; wherein the rotation speeds of the at least two fan bodies (120) are different.

2. The blower system of the fan heater according to claim 1, wherein, Each of the fan bodies (120) is fixed to the fan support (110) by at least one fixing member (300).

3. The blower system of the fan heater according to claim 2, wherein, Each of the fan bodies (120) is provided with at least one mounting lug (121), and the fixing member (300) is connected to the fan body (120) through the mounting lug (121) to fix the fan body (120) to the fan support (110).

4. The blower system of the fan heater according to claim 3, wherein, The fan support (110) is provided with a limiting portion (112) for limiting the mounting lug (121).

5. The blower system of the fan heater according to claim 4, wherein, The limiting portion (112) is an L-shaped protrusion, and two edges of the L-shaped protrusion are respectively abutted on two side walls of the mounting lug (121) provided at intervals.

6. A fan heater, characterised in that The fan system, the housing and the heating system (200) of the fan heater according to any one of claims 1-5, the housing is provided with an air inlet and an air outlet, the fan system and the heating system (200) of the fan heater are mounted on the housing, the fan system of the fan heater is arranged between the air inlet and the air outlet, and the heating system (200) is arranged between the fan system of the fan heater and the air outlet.

7. The fan heater according to claim 6, wherein, The heating system (200) comprises a heating support (210) and a heating member (220), the heating support (210) is connected to the fan support (110), the heating support (210) is provided with a mounting groove (211) penetrating through, and the heating member (220) is mounted in the mounting groove (211).

8. The fan heater according to claim 7, characterized in that An inner side wall of the mounting groove (211) is provided with a clamping portion (212) surrounding the contour of the mounting groove (211), and the heating member (220) is mounted on the clamping portion (212).

9. The fan heater of claim 7, wherein, The fan body (120), the fan support (110) and the heating support (210) are connected by at least one fixing member (300).

10. The fan heater according to claim 9, characterized in that, At least one mounting lug (121) is arranged on each fan body (120), the fan support (110) is provided with a plug-in cylinder (113) and a first mounting hole (114) penetrating the plug-in cylinder (113), the heating support (210) is provided with a plug-in column (213) matched with the plug-in cylinder (113), and the plug-in column (213) is provided with a second mounting hole (214), and the fixing member (300) is connected in sequence through the mounting lug (121), the first mounting hole (114) and the second mounting hole (214) to fix the fan body (120), the fan support (110) and the heating support (210) as a whole.

Images