Multi-fan warm air blower

Abstract

The utility model discloses a multi-fan warm air blower. The multi-fan warm air blower comprises a shell with a main air duct and at least one auxiliary fan, the main air duct is provided with a main fan and a heating assembly; the main fan is used for extracting outside air and blowing the outside air to the heating assembly so as to blow out hot air generated by heating of the heating assembly from the air outlet; air blown by the auxiliary fan does not pass through the heating assembly and drives warm air blown by the main fan to be blown out at the air outlet in a jet flow state. According to the multi-fan warm air blower provided by the utility model, the main fan and the auxiliary fan are arranged in the shell, and the main fan is responsible for pushing hot air flow to form strong hot air output; air blown out by the auxiliary fan does not pass through the heating assembly and is not blocked, high-speed air can be formed to drive hot air to pass through the air outlet, concentrated and strong hot air flow can be formed, the air speed can reach 3-4 meters per second, the heating distance is further increased, the heating air speed is further increased, and the efficient heat flow circulation and remote heating effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, and in particular to a multi-fan heater. Background Technology

[0002] A fan heater is a device used in homes or commercial settings to deliver warm air and raise the ambient temperature for heating purposes. Typically, a fan heater consists of a PTC (Positive Temperature Coefficient) heater, a resistance wire, and other heating elements, with a fan blowing the warm air generated by the heating elements outwards.

[0003] However, because the heating device obstructs the airflow, the blown hot air easily forms turbulence, resulting in insufficient air pressure from the fan, a short heating distance, and difficulty in covering large spaces. This makes it difficult to heat up quickly and leads to heat accumulation, resulting in energy waste. To increase air pressure, the fan is often designed with high speed, but this results in significant noise from the fan operation.

[0004] Therefore, it is necessary to provide a multi-fan heater to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a multi-fan heater, which aims to improve the problems of short heating distance and high noise in existing heaters, increase heating distance and wind speed, and reduce operating noise.

[0006] To achieve the above objectives, this utility model provides a multi-fan heater, comprising: a housing having a main air duct;

[0007] The housing has an air inlet at one end and an air outlet at the other end; the main air duct is equipped with a main fan and a heating assembly;

[0008] The main fan is used to draw in outside air from the air inlet and blow it onto the heating component, so that the hot air generated by the heating component is blown out from the air outlet.

[0009] At least one auxiliary fan, wherein the air blown by at least one of the auxiliary fans does not pass through the heating component, and drives the warm air blown by the main fan to be blown out of the air outlet in a jet state.

[0010] In a preferred embodiment, the housing includes an air inlet section, a fixed section, a mixing section, and an air outlet section connected in sequence; the auxiliary fan is disposed in the mixing section and / or the air inlet section; and the air outlet is disposed in the air outlet section.

[0011] In a preferred embodiment, the air inlet section has a plurality of first air inlets, and all the first air inlets together form an air inlet; the main fan and the heating component are both fixed within the fixed section; the main fan draws air from the first air inlets and blows it out onto the heating component.

[0012] In a preferred embodiment, the auxiliary fan is located within the mixing section, and the mixing section has a plurality of second air inlets; the auxiliary fan draws air from the second air inlets and drives the hot air blown out by the main fan to the air outlet.

[0013] In a preferred embodiment, the air outlet section is provided with a guide shroud at the air outlet, and the auxiliary fan includes a motor and a fan blade; the motor is located in the middle of the guide shroud, and a rotating shaft is vertically provided at the center of the guide shroud; one end of the rotating shaft away from the guide shroud extends into the mixing section and is connected to the fan blade, and the motor is used to drive the fan blade to rotate through the rotating shaft.

[0014] In a preferred embodiment, the auxiliary fan is disposed within the air inlet section, and the fixed section is provided with a fixed cylinder having a main air duct. The side of the fixed cylinder near the air inlet section is closed or has a third air inlet hole, thereby forming an auxiliary air duct between the fixed cylinder and the fixed section. The main fan and the heating component are both disposed within the fixed cylinder. The warm air blown out by the main fan enters the mixing section through the main air duct, and the air blown out by the auxiliary fan enters the mixing section through the auxiliary air duct.

[0015] In a preferred embodiment, the heating element is a ceramic PTC heating element.

[0016] This utility model provides a multi-fan heater that incorporates a main fan and an auxiliary fan within its casing. The main fan pushes out a powerful stream of hot air, while the auxiliary fan blows air that bypasses the heating elements, ensuring unobstructed flow and creating a high-speed airflow that draws hot air from the outlet. This results in a concentrated and powerful airflow with a speed of 3-4 meters per second, further enhancing the heating distance and airflow speed, achieving efficient heat circulation and long-distance heating. Furthermore, the dual-fan design eliminates the need for high-speed operation, effectively reducing airflow noise and keeping it within 40-55 decibels, making it suitable for home and office environments. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of a multi-fan heater in one embodiment;

[0019] Figure 2 for Figure 1 An exploded 3D view of the multi-fan heater shown.

[0020] Figure 3 for Figure 2 An exploded 3D view of the multi-fan heater from another angle;

[0021] Figure 4 This is a longitudinal sectional view of a multi-fan heater in another embodiment.

[0022] The following are the labels in the diagram: 100, Multi-fan heater; 101, Main air duct; 102, Air inlet; 103, Air outlet; 104, Auxiliary air duct; 10, Housing; 11, Air inlet section; 12, Fixed section; 13, Mixing section; 14, Air outlet section; 111, First air inlet; 121, Fixed cylinder; 131, Second air inlet; 1211, Third air inlet; 20, Auxiliary fan; 31, Main fan; 32, Heating component; 40, Air guide shroud; 41, Rotating shaft. Detailed Implementation

[0023] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the present utility model and are not intended to limit the present utility model.

[0024] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] In an embodiment of this utility model, a multi-fan heater 100 is provided, which achieves efficient heat flow circulation and long-distance heating effect by setting at least two independent fans inside the unit.

[0027] like Figures 1-4 As shown, the multi-fan heater 100 includes: a housing 10 having a main air duct 101 and at least one auxiliary fan 20. One end of the housing 10 is provided with an air inlet 102, and the other end is provided with an air outlet 103.

[0028] The main air duct 101 is equipped with a main fan 31 and a heating component 32. The main fan 31 is used to draw in outside air from the air inlet 102 and blow it onto the heating component 32, so that the hot air generated by the heating component 32 is blown out from the air outlet 103.

[0029] That is, the main fan 31 is responsible for pushing the hot air flow, forming a strong hot air output. The heating component 32 includes, but is not limited to, devices with heating functions such as a ceramic PTC heating element, a resistance wire, and a heating film. Preferably, the heating component 32 uses a ceramic PTC heating element, which has self-limiting temperature characteristics, rapid heating, and uniform and continuous hot air output, ensuring a stable heating effect. It should be noted that the specific structure and implementation principle of the ceramic PTC heating element can be found in existing technologies, and will not be elaborated upon here.

[0030] At least one auxiliary fan 20 blows air that does not pass through the heating component 32, and drives the warm air blown by the main fan 31 to be blown out in a jet state at the air outlet 103. The auxiliary fan 20 can be located in front of or behind the main fan 31, and the number is not limited to one.

[0031] The auxiliary fan 20 can be a pressure fan design, used to deliver outside air to the outlet of the main air duct 101, and drive the hot air blown out by the main fan 31 through the air outlet 103. That is, the auxiliary fan 20 mainly plays a supporting role, ultimately enhancing the heating distance and air velocity of the warm air output from the air outlet 103 by outputting ambient temperature air. Therefore, the two fans, one in front and one behind, operate in coordination, and uniform air distribution can be achieved through synchronous control. Both the main fan 31 and the auxiliary fan 20 can use noise-reducing fan blades.

[0032] Specifically, the housing 10 includes an air inlet section 11, a fixed section 12, a mixing section 13, and an air outlet section 14 connected in sequence. An auxiliary fan 20 is located in the mixing section 13 and / or the air inlet section 11. An air outlet 103 is located in the air outlet section 14.

[0033] The air inlet section 11 has several first air inlet holes 111, and all the first air inlet holes 111 together form an air inlet 102. The first air inlet holes 111 can be strip-shaped, and multiple first air inlet holes 111 are arranged around the same center to form an air inlet 102 with a filter function.

[0034] Both the main fan 31 and the heating element 32 are fixed within the fixed section 12. The main fan 31 draws air from the first air inlet 111 and blows it out of the heating element 32, and then the generated hot air passes through the mixing section 13 and the air outlet section 14 in sequence.

[0035] Combination Figures 1-3 As shown, in one embodiment, an auxiliary fan 20 is disposed within a mixing section 13, and the mixing section 13 has a plurality of second air inlets 131. The second air inlets 131 may be strip-shaped, and the plurality of second air inlets 131 are arranged around the same center, thereby forming an air inlet channel with a filter function. The auxiliary fan 20 draws air from the second air inlets 131 and drives the hot air blown out by the main fan 31 to blow it out of the air outlet 103.

[0036] Specifically, the air outlet section 14 is equipped with a guide hood 40 (air guide mesh) at the air outlet 103. The airflow in the mixing section 13 forms an air jet after passing through the guide hood 40. Therefore, by setting up a silent guide hood 40, wind noise can be reduced, and the converging airflow in the air outlet section 14 can be guided and evenly ejected outward to form an air jet, making the hot air more concentrated and the flow velocity higher, effectively improving the heating effect and wind speed stability, thereby effectively alleviating the problem of hot air rising and maintaining a balanced indoor temperature.

[0037] The auxiliary fan 20 includes a motor (not shown in the figure) and fan blades. The motor is located at the center of the air guide shroud 40, and a rotating shaft 41 is vertically mounted at the center of the air guide shroud 40. The end of the rotating shaft 41 away from the air guide shroud 40 extends into the mixing section 13 and is connected to the fan blades. The motor drives the fan blades to rotate through the rotating shaft 41, thereby drawing in air from the main air duct 101 or outside air and forming a jet that is blown out at the air outlet 103.

[0038] Combination Figure 4As shown, in another embodiment, the auxiliary fan 20 is located within the air inlet section 11. A fixed cylinder 121 with a main air duct 101 is located within the fixed section 12. The side of the fixed cylinder 121 closest to the air inlet section 11 is either closed or has a third air inlet hole 1211, forming an auxiliary air duct 104 between the fixed cylinder 121 and the fixed section 12. In this case, the main air duct 101 is located within the fixed cylinder 121, and its air intake can be achieved through the third air inlet hole 1211 or through the air inlet channel connecting the fixed cylinder 121 to the outside. In this embodiment, both the main fan 31 and the heating assembly 32 are located within the fixed cylinder 121. The hot air blown out by the main fan 31 enters the mixing section 13 through the main air duct 101, and the air blown out by the auxiliary fan 20 enters the mixing section 13 through the auxiliary air duct 104, forming a strong air pressure that can drive the hot air out from the air outlet 103.

[0039] During operation, the opening and closing of the main fan 31 and the auxiliary fan 20, as well as the opening and closing of the heating element 32, can all be remotely controlled via the intelligent control module. For example, users can adjust the fan speed, temperature, and timer via the control panel or remote control. After receiving the signal, the intelligent control module of the heater controls the output power of the dual fans and the heating element 32 to ensure constant temperature and low noise operation.

[0040] In summary, the multi-fan heater 100 provided by this utility model, by setting a main fan 31 and an auxiliary fan 20 within the housing 10, allows the main fan 31 to push hot airflow, forming a strong hot air output. At least one auxiliary fan 20 blows air that does not pass through the heating element 32, thus avoiding obstruction and forming a high-speed airflow that carries hot air from the air outlet 103, creating a concentrated and powerful hot airflow with a wind speed of 3-4 meters per second. This further increases the heating distance and wind speed, achieving efficient heat circulation and long-distance heating. Furthermore, the dual-fan design eliminates the need for high-speed fan operation, effectively reducing airflow impact noise, which can be controlled within 40-55 decibels, making it suitable for home and office environments.

[0041] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. A multi-fan blower, characterized by comprising: The application relates to a heating device. The shell is provided with an air inlet at one end and an air outlet at the other end; the main air duct is provided with a main air blower and a heating assembly; The main air blower is used for sucking external air from the air inlet and blowing the air to the heating assembly to heat the air heated by the heating assembly and blow the air out of the air outlet; At least one auxiliary air blower is used for blowing air which does not pass through the heating assembly and driving the warm air blown by the main air blower to be blown out of the air outlet in a jet state. The shell comprises an air inlet section, a fixed section, a mixing section and an air outlet section which are sequentially connected; the auxiliary air blower is arranged in the mixing section and / or the air inlet section; and the air outlet is arranged in the air outlet section.

2. The multi-fan hand drier of claim 1, wherein The air inlet section is provided with a plurality of first air inlets which jointly form the air inlet; the main air blower and the heating assembly are fixed in the fixed section; the main air blower sucks air from the first air inlets and blows the air to the heating assembly.

3. The multi-fan hand drier of claim 2, wherein The auxiliary air blower is arranged in the mixing section and the mixing section is provided with a plurality of second air inlets; the auxiliary air blower sucks air from the second air inlets and drives the warm air blown by the main air blower to be blown out of the air outlet.

4. The multi-fan hand drier of claim 2, wherein The air outlet section is provided with a flow guide cover at the air outlet; the auxiliary air blower comprises a motor and a fan blade; the motor is arranged in the middle of the flow guide cover and a rotating shaft is vertically arranged at the center of the flow guide cover; one end of the rotating shaft away from the flow guide cover extends into the mixing section and is connected with the fan blade; and the motor is used for driving the fan blade to rotate through the rotating shaft.

5. The multi-fan hand drier of claim 4, wherein The auxiliary air blower is arranged in the air inlet section; the fixed section is provided with a fixed cylinder with a main air duct; one side of the fixed cylinder close to the air inlet section is closed or provided with a third air inlet, and an auxiliary air duct is formed between the fixed cylinder and the fixed section; the main air blower and the heating assembly are arranged in the fixed cylinder; the warm air blown by the main air blower enters the mixing section through the main air duct, and the air blown by the auxiliary air blower enters the mixing section through the auxiliary air duct.

6. The multi-fan hand drier of claim 2, wherein The heating assembly is a ceramic PTC heating body.

7. The multi-fan hand drier of claim 1, wherein ​

Images