CN220793251U

CN220793251U - Through-flow warm air blower

Info

Publication number: CN220793251U
Application number: CN202322435813.0U
Authority: CN
Inventors: 苏冠贤; 周善智; 甘金江
Original assignee: Dongguan Corehelm Electronic Technology Co ltd
Current assignee: Dongguan Corehelm Electronic Technology Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-04-16
Anticipated expiration: 2033-09-08

Abstract

The utility model discloses a through-flow fan heater, which comprises a through-flow air duct with an air inlet end and an air outlet end, wherein the air inlet end of the through-flow air duct is rotationally provided with through-flow blades, and the through-flow blades are rotated to enable the inside of the through-flow air duct to form air flows entering from the air inlet end and being discharged from the air outlet end; the through-flow fan heater also comprises a heating back air plate which is arranged along the through-flow air duct in an extending way, and the heating back air plate can generate heat and conduct the heat into the through-flow air duct so as to heat air flow; according to the through-flow fan heater, the heating leeward plate is used as a heating source, so that when warm air needs to be exhausted, the heating leeward plate is used for generating heat, the heating leeward plate is used for transmitting the heat into the through-flow air duct, the air flow of the through-flow air duct is heated, and warm air is exhausted at the air outlet end.

Description

Through-flow warm air blower

Technical Field

The utility model relates to the technical field of electric appliance manufacturing, in particular to a through-flow fan heater.

Background

The through-flow fan heater has the characteristics of large air quantity, low noise and the like, and has been widely applied to household electrical appliances. The existing cross-flow fan heater generally comprises a volute, fan blades and a motor, wherein heating elements are arranged on the fan blades, so that when the fan blades rotate to generate air flow, the air flow is heated, and the effect of blowing and warming air is achieved.

However, as the heating element is arranged on the fan blade, the wiring assembly of the heating element is complicated, the assembly is inconvenient, and the production cost is high.

Disclosure of Invention

The utility model aims to overcome the defects and provide a through-flow fan heater which is simple to assemble.

In order to achieve the above object, the present utility model is specifically as follows:

the cross-flow fan heater comprises a cross-flow air duct with an air inlet end and an air outlet end, wherein the air inlet end of the cross-flow air duct is rotationally provided with cross-flow blades, and the air flow entering from the air inlet end and being discharged from the air outlet end is formed in the cross-flow air duct by rotating the cross-flow blades;

the through-flow fan heater also comprises a heating back air plate which is arranged along the through-flow air duct in an extending mode, and the heating back air plate can generate heat and conduct the heat into the through-flow air duct so as to heat air flow.

Optionally, the heating leeward plate comprises a leeward plate body and a first heating assembly arranged on the surface of the leeward plate body.

Optionally, at least one first heating element is arranged on the outer surface and/or the inner surface of the leeward plate body along the wind flow direction.

Optionally, the first heating assembly is a thick film heating assembly.

Optionally, the first heating element includes the layer that generates heat that sets up at lee plate body surface, with the connector lug of layer electric connection that generates heat and be used for monitoring the temperature control element that generates heat layer temperature.

Optionally, the cross-flow fan heater further comprises two fan volute shells arranged at intervals, and the heating back air plate is arranged between the two fan volute shells.

Optionally, the through-flow fan heater further comprises a vortex tongue plate arranged between the two fan scroll cases, and the fan scroll cases, the heating back air plate and the vortex tongue plate form a through-flow air channel.

Optionally, the surface of the whirlpool tongue plate is provided with a second heating assembly.

Optionally, the second heating assembly is identical in structure to the first heating assembly.

Optionally, the cross-flow fan heater further comprises a driving component for driving the cross-flow fan blades to rotate to generate air flow.

The beneficial effects of the utility model are as follows: according to the through-flow fan heater, the heating leeward plate is used as a heating source, so that when warm air needs to be exhausted, the heating leeward plate is used for generating heat, the heating leeward plate is used for transmitting the heat into the through-flow air duct, the air flow of the through-flow air duct is heated, and warm air is exhausted at the air outlet end.

Drawings

FIG. 1 is a schematic view of a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of another view of the embodiment of the present utility model;

FIG. 3 is an exploded view of a first embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a first embodiment of the utility model;

FIG. 5 is a schematic diagram of a second embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a second embodiment of the present utility model;

reference numerals illustrate: 1. a blower scroll; 2. a heating back air plate; 21. a back wind plate body; 22. a heat generating layer; 23. a connector lug; 231. a wire holder; 232. a first terminal; 24. a temperature control element; 3. a whirlpool tongue plate; 31. inserting a column; 4. a through-flow air duct; 5. through-flow fan blades; 51. a fixing piece; 52. a blade unit; 53. a rotating shaft; 61. a driving seat; 62. a motor; 63. and a second binding post.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the utility model.

Embodiment one: as shown in fig. 1 to 4, the cross-flow fan heater according to the embodiment includes a cross-flow air duct 4 having an air inlet end and an air outlet end, the air inlet end of the cross-flow air duct 4 is rotatably provided with a cross-flow fan blade 5, and the air flow entering from the air inlet end and being discharged from the air outlet end is formed in the cross-flow air duct 4 by rotating the cross-flow fan blade 5;

the cross-flow fan heater also comprises a heating back air plate 2 which is arranged along the cross-flow air duct 4 in an extending mode, and the heating back air plate 2 can generate heat and conduct the heat into the cross-flow air duct 4 so as to heat air flow. According to the embodiment, the heating back air plate 2 is used as a heating source, so that when warm air needs to be exhausted, the heating back air plate 2 is used for generating heat, the heating back air plate 2 conducts the heat into the through-flow air duct 4, the air flow of the through-flow air duct 4 is heated, and warm air is exhausted from the air outlet end.

Specifically, the through-flow fan heater of the embodiment comprises two fan scroll cases 1 which are arranged in opposite directions at intervals, a heating back air plate 2 and a vortex plate 3 are fixedly connected between the two fan scroll cases 1, a through-flow air duct 4 with an air inlet end and an air outlet end is formed among the heating back air plate 2, the vortex plate 3 and the fan scroll cases 1, the air inlet end of the through-flow air duct 4 is rotationally provided with a through-flow fan blade 5, one of the fan scroll cases 1 is provided with a driving component, and the driving component is used for driving the through-flow fan blade 5 to rotate so as to generate air flow;

the heating back air plate 2 comprises a back air plate body 21 and a first heating assembly arranged on the surface of the back air plate body. The back air plate body is preferably made of materials with high heat conduction efficiency, such as aluminum, aluminum alloy and the like;

when the air conditioner is actually used, the driving assembly drives the cross-flow fan blade 5 to rotate, so that external air flow is sucked into the cross-flow air duct 4 from the air inlet end and then blown out from the air outlet end, air flow is formed in the cross-flow air duct 4, and when the first heating assembly on the surface of the leeward plate body 21 works to generate heat, the generated heat is thermally conducted to the air flow flowing through the cross-flow air duct 4 through the leeward plate body 21, so that the air flow is heated, and the air flow discharged from the air outlet end is warm air.

This embodiment is through setting up first heating element on the back of the body aerofoil body 21 surface to through back of the body aerofoil body 21 with heat conduction to the windward flow, heating area is bigger, and heating efficiency is higher, and heating element can not produce the wind and block, makes heating element's equipment simpler simultaneously, improves the production packaging efficiency of through-flow fan heater, does benefit to reduction in production cost.

As shown in fig. 1 to 4, in some embodiments, a first heating element is disposed on an outer surface of the leeward plate 21, so as to facilitate installation of the first heating element. As shown in fig. 1 and fig. 4, in the through-flow fan heater according to the present embodiment, in some embodiments, at least one first heating component is disposed on the outer surface of the back air plate body 21 along the wind flow direction, and preferably, the number of the first heating components is two, so as to improve the heating efficiency of the wind flow; simultaneously, two first heating assemblies can be controlled to work simultaneously, or one of the first heating assemblies can be made to work so as to achieve different heating effects, and the structure is more flexible to use.

In some embodiments, the first heating component is a thick film heating component, and the overall structure is small in size and high in heating efficiency. The thick film heating assembly may be a carbon paste heating assembly, a graphene heating assembly, a thin film heating assembly, or a nano rare earth heating assembly. Specifically, as shown in fig. 1 to 3, the nano rare earth heating component is adopted in this embodiment, and the first heating component includes a heating layer 22 disposed on the surface of the leeward plate body 21, a connector lug 23 electrically connected to the heating layer 22, and a temperature control element 24 for monitoring the temperature of the heating layer 22. The arrangement ensures that the heating area is larger and the heating efficiency is higher; preferably, the heating layer 22 is a nano rare earth heating layer 22, the heating layer 22 uses the leeward plate body 21 as a base material layer to be attached to the outer surface of the leeward plate body 21, a screen printing sintering mode can be adopted, the heat conduction efficiency is improved, the production cost is saved, the heating layer 22 is connected with an external power supply through the connector lug 23, the power supply of the heating layer 22 is realized, the heating layer 22 generates heat, the heat is conducted to wind current through the leeward plate body 21, and the heating temperature of the heating layer 22 is monitored by arranging the temperature control element 24 so as to achieve the warm air effect of different temperatures, and meanwhile, the heating layer 22 is prevented from being damaged due to overhigh temperature.

Of course, the first heating component may also be a PTC heating component or a nickel winding heating component, where the PTC heating component or the nickel winding heating component is disposed on the outer surface of the back air plate 21, and the PTC heating component or the nickel winding heating component works to generate heat, and the heat is conducted into the through-flow air duct through the back air plate 21 to heat the air flow. The selection setting can be performed according to actual design requirements.

In this embodiment, the number of the temperature control elements 24 is two, one is an automatic temperature controller, the other is a manual temperature controller, and the automatic temperature controller and the manual temperature controller are connected in series, so that the structure is safer to use.

As shown in fig. 1 to 4, in one embodiment of the through-flow fan heater, the connector 23 includes a connector 231 and a first connector 232 riveted to the connector 231. The wiring seat 231 adopts insulating material to make, like the ceramic seat, through setting up wiring seat 231 to the installation of first terminal 232, the one end elastic crimping of first terminal 232 is on the electric connection end of layer 22 that generates heat, and the other end and the external power supply electrical behavior of first terminal 232 peg graft, so set up, make the equipment of first heating element more convenient.

In one embodiment, the surface of the whirlpool tongue 3 is provided with a second heating element (not shown). Specifically, the second heating assembly is identical in structure to the first heating assembly. The second heating component is arranged on the volute tongue plate 3, so that the heating efficiency of the wind flow is further improved.

As shown in fig. 2 to 4, in the through-flow fan heater according to the present embodiment, in some embodiments, a plurality of insertion holes are provided on the fan volute 1, the end portion of the volute tongue plate 3 is convexly provided with an insertion column 31, and the insertion column 31 is correspondingly inserted into the insertion hole. In the embodiment, the plug hole and the plug column 31 are arranged for being in plug-in fit, so that the installation of the volute tongue plate 3 is realized, and the assembly is more convenient.

As shown in fig. 2 and fig. 3, in some embodiments, the cross-flow fan 5 includes a plurality of fixing plates 51 disposed between two fan scroll 1 at intervals, a plurality of circumferentially uniformly distributed blade units 52 are connected between the fixing plates 51 in a penetrating manner, and two outermost fixing plates 51 are respectively connected to the fan scroll 1 in a rotating manner through a rotating shaft 53. In the embodiment, the fixing piece 51 is arranged so as to facilitate the installation of the blade units 52, the plurality of blade units 52 are uniformly distributed along the circumferential direction, the noise is lower, the air output is large, and the rotating shaft 53 is arranged so that the driving assembly drives the cross-flow fan blade 5 to rotate through the rotating shaft 53 to generate air flow. Specifically, the shaft 53 is mounted on the blower scroll 1 by a bearing assembly so as to stabilize rotation of the shaft 53.

As shown in fig. 2 and 3, in some embodiments, the driving assembly includes a driving seat 61, a motor 62 installed on the driving seat 61 along the axial direction of the through-flow fan blade 5, and a second binding post 63 installed on the driving seat 61, where an output end of the motor 62 is connected with the through-flow fan blade 5, and the second binding post 63 is electrically connected with the motor 62. Specifically, the output end of the motor 62 is in transmission connection with the rotating shaft 53, so that the motor 62 drives the rotating shaft 53 to rotate, and the cross-flow fan blade 5 is driven to rotate to generate wind flow; by providing the second terminal 63, the wiring of the motor 62 is facilitated, and the assembly is facilitated.

Embodiment two: as shown in fig. 5 and 6, the difference between the present embodiment and the first embodiment is that at least one first heating element is disposed on the inner surface of the back plate body 21 along the wind flow direction; the other structures are the same as those of the first embodiment, so that the first embodiment has the advantages of the first embodiment, and will not be described again here. Specifically, the first heating assemblies are arranged at the air outlet end of the through-flow air duct 4, the number of the first heating assemblies is two, and the two first heating assemblies are arranged at intervals along the air flow direction; therefore, heat is generated when the first heating component works, the heat is directly dissipated into the through-flow air duct 4, the air flow is heated, namely, the air flow takes away the dissipated heat, the warm air effect is achieved, and the heat efficiency is higher.

The foregoing description is only one preferred embodiment of the utility model, and therefore all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are intended to be embraced therein.

Claims

1. The cross-flow fan heater is characterized by comprising a cross-flow air duct with an air inlet end and an air outlet end, wherein the air inlet end of the cross-flow air duct is rotationally provided with a cross-flow fan blade, and the cross-flow fan blade is rotated to enable the cross-flow air duct to form air flow entering from the air inlet end and being discharged from the air outlet end;

2. A through-flow fan heater according to claim 1, wherein the heat-generating back air plate comprises a back air plate body and a first heating assembly arranged on the surface of the back air plate body.

3. A through-flow fan according to claim 2, wherein at least one first heating element is provided on the outer and/or inner surface of the leeward plate body in the direction of the wind flow.

4. A through-flow fan heater according to claim 3, wherein the first heating element is a thick film heating element.

5. The through-flow fan heater according to claim 4, wherein the first heating assembly comprises a heating layer arranged on the surface of the leeward plate body, a connector lug electrically connected with the heating layer, and a temperature control element for monitoring the temperature of the heating layer.

6. A cross-flow fan heater as in any one of claims 2 to 5, further comprising two spaced apart fan scroll members, the heat generating back air plate being disposed between the two fan scroll members.

7. The cross-flow fan heater according to claim 6, further comprising a volute tongue plate arranged between the two fan volute cases, wherein the fan volute cases, the heating back air plate and the volute tongue plate form a cross-flow air channel.

8. A through-flow fan heater according to claim 7, wherein the surface of the whirlpool tongue plate is provided with a second heating element.

9. A through-flow fan heater according to claim 8, wherein the second heating assembly is of the same construction as the first heating assembly.

10. The cross-flow fan heater according to claim 6, further comprising a driving assembly for driving the cross-flow fan blades to rotate to generate air flow.