CN2254127Y - Cold and warm dual-purpose energy-saving electric fan - Google Patents

Abstract

The utility model relates to a dual-purpose energy-saving electric fan for cooling and heating. Is characterized in that a shell made of conductive plastic is arranged in front of the fan, and conductive metal objects are arranged at two ends of the shell. Thus, the ribs on the housing are equivalent to a plurality of resistors connected in parallel, and generate heat when connected with a power supply to blow hot air. The utility model can blow out cool air or hot air correspondingly under the control of the switch, so as to be used in two seasons of cold and hot days. The utility model discloses simple structure, safe and reliable, processing is convenient, economical and practical is the substitute product of electric fan.

Description

Cooling and heating dual-purpose energy-saving electric fan

The utility model relates to an electric fan used indoors.

At present, well-known fans can only be adapted to blow cool wind on hot days, and can no longer be used when the weather turns cold. However, ordinary electric heating wire electric heaters and hot air fans are only suitable for heating in cold weather, and there are open flames, which are prone to danger, and their thermal efficiency is not too high. The best heating rate is 57%. Since the above two daily necessities can only be applied in different seasons, their respective utilization rates are relatively low.

The purpose of the utility model is to provide a high-efficiency dual-purpose energy-saving electric fan for heating and cooling, which can be used as a common electric fan and as a heating fan in cold weather.

The purpose of this utility model is achieved like this: there is an outer cover made of conductive plastic in front of the electric fan fan, and there are ribs on the outer cover. connect.

Figure 1 is a front view of a circular electric fan cover.

Fig. 2 is a front view of a square electric fan cover.

Fig. 3 is a perspective view of a circular electric fan.

Fig. 4 is a perspective view of a square electric fan.

Figure 5 is a schematic diagram of the power supply of the outer cover.

It can be seen from Fig. 1 and Fig. 2 that the outer cover of the dual-purpose energy-saving electric fan for heating and cooling is made of conductive plastic. Ribs 1 on the outer cover. Spaces are arranged between the ribs 1 as air outlet passages. There are conductive metal objects 2 at both ends of the rib 1. The conductive metal objects 2 can be metal strips or metal wires. The two conductive metal objects 2 are connected to the wire 3 respectively. There is a control switch K on the wire 3 and finally connected to the power supply. Fig. 3, Fig. 4, are respectively circular electric fan, three-dimensional schematic diagram of square electric fan, and A in the figure is correspondingly the outer cover among Fig. 1, Fig. 2. As can be seen from Figure 5, since the outer cover is made of conductive plastic, each rib 1 is equivalent to a resistor R, and due to the effect of the metal object 2, the outer cover is equivalent to several resistors R and connected to the power supply. When the control switch K is closed, the rib 1 generates heat evenly, and the generated heat is blown out from the tuyere to become hot air.

When hot weather, switch K is disconnected, and this electric fan is the same as common electric fan, and blows cool wind to use. In cold weather, the switch K is closed, and the electric fan blows hot air for heating.

The utility model has the advantages of:

The outer cover of the utility model is made of conductive plastic, and the thermal efficiency can reach more than 95%, which saves energy and has high efficiency. The utility model has no open flame, eliminates unsafe factors, and the conductive plastic surface adopts insulation treatment, so it is safe and reliable. The utility model can be used not only in hot weather, but also in cold weather, achieves dual-purpose, high utilization rate, and replaces the original single electric fan.

The production of the utility model can maintain the production technology and equipment of the original electric fan manufacturer, and only need to change some raw materials. The old factory is easy to transform, and the products have many energy-saving uses.

Claims (2)

1. A dual-purpose energy-saving electric fan for cooling and heating, which is characterized in that there is a cover made of conductive plastic in front of the fan, and there are ribs on the cover. There are conductive metal objects at both ends of the ribs, and the conductive metal objects pass through the wires to control The switch is electrically connected to a power source. 2. The electric fan according to claim 1, characterized in that the conductive metal object is a metal strip or a metal wire.

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