CN215723523U

CN215723523U - Warm-air drier

Info

Publication number: CN215723523U
Application number: CN202120377526.7U
Authority: CN
Inventors: 罗达里·阿德里亚诺
Original assignee: Tenacta Group SpA
Current assignee: Tenacta Group SpA
Priority date: 2020-02-19
Filing date: 2021-02-19
Publication date: 2022-02-01
Anticipated expiration: 2031-02-19
Also published as: IT202000000773U1

Abstract

The utility model relates to an electric warm-air drier which is provided with a motor; at least one fan driven by the motor and capable of moving ambient air; and at least one wire resistance element disposed on the fan and capable of heating the air. The wire resistance element is composed of a first winding and a second winding, wherein the size of the first winding is larger than the size of the second winding. In this way, by changing the size of the two windings, it is easier to diversify the respective power values with each other. In particular, since the two windings have two different diameters, the power of the resistive element with the larger diameter can be increased.

Description

Warm-air drier

Technical Field

The utility model relates to an electric warm-air drier, in particular to a warm-air drier with two independent resistors.

Background

Electric warmers for heating environments are typically equipped with a motor connected to a fan and a wire heating element.

Typically, the wire heating element consists of two windings of the same size (for simplicity, these two windings are denoted R1 and R2).

In order to facilitate the power combining of the various phases, generally, the fan heaters known in the art are equipped with switches capable of managing the motor, and each of the two windings R1 and R2 is arranged independently or in parallel.

Typically, the R1 and R2 winding values of fan heaters known in the art are about 1000 watts, respectively.

In general, the switches of the fan heaters known in the art provide four adjustable positions 0-1-2-3, wherein:

-0 (off)

-1 (Engine discharging only cold air)

-2 (Engine + R1) and

-3 (engine + R1+ R2).

The applicant of the present patent application has highlighted the need to diversify the power of the resistances R1 and R2 of the fan heater.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a warm air blower.

In fact, the applicant of the present invention has surprisingly found that the technical problem highlighted above can be effectively and reliably solved by an electric radiator fan equipped with an electric motor; at least one fan driven by the motor and capable of moving ambient air; at least one wire resistive element disposed on the fan and capable of heating the air, wherein the resistive element is comprised of a first winding and a second winding, wherein the size of the first winding is larger than the size of the second winding.

In this way, by changing the size of the two windings, it is easier to diversify the respective power values with each other.

In particular, since the two windings have two different diameters, the power of the resistive element can be increased, wherein the resistive element has a larger diameter.

According to a preferred embodiment, the diameter of the first winding is at least 7%, preferably at least 10% larger than the diameter of the second winding.

According to a preferred embodiment, the resistance of the first winding is from about 1000 watts to about 1250 watts, preferably from about 1100 watts to about 1200 watts.

According to a preferred embodiment, the resistance of the second winding is from about 750 watts to about 950 watts, preferably from about 800 watts to about 900 watts.

According to a preferred embodiment, each of the first and second windings is charged with a suitable heating power.

According to a preferred embodiment, the first winding and the second winding are arranged such that the first winding is impinged upon by the airflow before the second winding.

In this way, the incoming cold air passes first through the first winding of the largest diameter and then through the second winding of the smaller diameter. This also facilitates power dissipation of the wires, avoiding redness of the wires themselves, which would impair the duration of use of the device.

According to a preferred embodiment, the first winding and the second winding are adapted to be activated independently of each other.

In this way, several adjustments can be made at substantially constant cost.

Drawings

Further characteristics and advantages of the utility model will better emerge from an examination of the following detailed description of a preferred but not exclusive embodiment, illustrated by way of non-limiting example, supported by the attached drawings, in which:

figure 1 is a schematic front view of an embodiment of a fan heater according to the present invention;

figure 2 shows the fan heater of figure 1 without the fan;

figure 3 shows a detail of the fan heater of figure 1;

figure 4 is an isometric view of the fan heater of figure 1.

Detailed Description

The following detailed description relates to a particular embodiment of the fan heater of the present invention, without limiting the content thereof.

With reference to fig. 1-4, a fan heater 1 is schematically illustrated, the fan heater 1 being formed by the following component parts, a substantially cylindrical support body 5; a motor (not shown), a fan 2, an element 6 for fixing the thermostat (and/or a thermal fuse and/or an electronic connector for electrical connection), a wire resistance element consisting of a first winding 3 and a second winding, all fixed to a support 5; the diameter of the first winding 3 is larger than the diameter of the second winding 4.

The first winding 3 is thus loaded with a larger electrical power than the second winding 4. For example, the value of the electric power of the first winding 3 is approximately equal to 1200 watts, while the value of the electric power of the second winding 4 is approximately equal to 800 watts.

The difference in diameter between the first winding 3 and the second winding 4 is shown more clearly in fig. 2 (the fan has been removed to make this difference in diameter more visible), while fig. 3 shows a detail of fig. 1.

As shown in the detail of fig. 3, the first winding 3 and the second winding 4 are arranged such that the first winding 3 is hit by the cold air before the second winding 4. In this way, the incoming cold air passes first through the first winding 3 and then through the second winding 4, which also contributes to the power dissipation of the wire, avoiding the wire itself from becoming red, which would impair the duration of use of the device.

In fig. 4, which shows the fan heater in an isometric view, it is shown more clearly how the first and

second windings

3, 4 are fixed around the support body 5 of the fan heater 1. The element 6 is also shown in detail.

The first and

second windings

3, 4 are activated independently of each other. In this way, a switch (not shown in the figures) connected to the fan heater allows the latter to assume one of the following five positions:

position "0": the engine is shut down;

-position "1": the motor is connected with the fan 2, and the

windings

3 and 4 are disconnected; the warm air blower only emits cold air; total power of the motor: 20 watt

Position "2": the motor and fan 2 are switched on, the second winding 4 is switched on and the first winding 3 is switched off; total power: 820 watt

Position "3": the motor is connected with the fan 2, the first winding 3 is connected, and the second winding 4 is disconnected; total power: 1220W

Position "4": the motor is connected with the fan 2, and the first winding 3 is connected with the second winding 4; total power: 2020 watt.

In this way, the power of the resistive element with a larger diameter (in this case the first winding 3) can be increased. Furthermore, by varying the dimensions of the two

windings

3, 4, it is easier to diversify the respective power values to each other.

Of course, many modifications and variations to the described preferred embodiments will be apparent to those skilled in the art, while remaining within the scope of the utility model.

The utility model is therefore not limited to the preferred embodiments described herein, which are shown by way of non-limiting example only, but is defined by the appended claims.

Claims

1. A fan heater (1) is provided with a motor; at least one fan (2) driven by the motor and capable of moving ambient air; -at least one wire resistance element placed on the fan (2) and able to heat the air, wherein the resistance element is composed of a first winding (3) and a second winding (4), characterized in that the size of the first winding (3) is larger than the size of the second winding (4).

2. The fan heater according to claim 1, characterized in that the diameter of the first winding (3) is at least 7% larger than the diameter of the second winding (4).

3. The fan heater according to claim 1, characterized in that the diameter of the first winding (3) is at least 10% larger than the diameter of the second winding (4).

4. The fan heater according to claim 1, characterised in that each of said first and second windings (3, 4) is charged with a suitable heating power.

5. The warm-air blower according to claim 1, characterized in that the first winding (3) and the second winding (4) are arranged such that the first winding (3) is impinged upon by cold air before the second winding (4).

6. The fan heater according to claim 1, characterized in that said first winding (3) and said second winding (4) are adapted to be activated independently of each other.

7. The fan heater according to claim 1, further comprising a switch,

it allows the fan heater to be in one of five positions, among them:

-the motor is switched off;

-the motor and the fan (2) are switched on, the first winding (3) and the second winding (4) are switched off;

-the motor and the fan (2) are switched on, the second winding (4) is switched on and the first winding (3) is switched off,

-the motor, the fan (2) and the first winding (3) are switched on, the second winding (4) is switched off,

-the motor, the fan (2), the first winding (3) and the second winding (4) are switched on.