Air feeding apparatus

An air feeding apparatus includes an air supplying chamber disposed in a housing, and cold producing plates in the chamber, which are connected to a switching circuit controllable for changing a working mode of the plates from a cold producing one to a heat producing one. A conduit is connected to an outlet of the air supplying chamber, and sticks outside the housing. Air is forced to travel through the air supplying chamber by means of an air pump, and is guided to outside by means of the conduit; thus, the air traveling through the chamber can have temperature changed by the cold producing plates, and can be conveyed to desired locations or into other objects for use.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an air feeding apparatus, more particularly one, which can be controlled to change temperature of air supplied from it according to needs.

2. Brief Description of the Prior Art

In early time when air conditioners were not available, electric fans were used to increase ventilation to reduce high temperature in the summer, and stoves were used to produce heat in the winter. Nowadays, air conditioners and electric heating devices are easily available, and many large buildings are equipped with central air conditioning systems therefore people live in a more comfortable environment from the point of view of temperature control.

However, performance of electric fans is significantly reduced in hot weather. And, air conditioners are relatively expensive, and cannot be carried. In addition, central air conditioning systems are only suitable for large buildings such as hospitals and commercial centers.

SUMMARY OF THE INVENTION

It is a main object of the present invention to provide an air feeding apparatus, which can be controlled to change temperature of air supplied from it according to needs, and which can pump the air to any desired locations with a pipe so that it has functions different from those of conventional air conditioners.

It is another object of the present invention to provide an air feeding apparatus, which includes cold producing plates disposed in a chamber, which are connected to a switching circuit controllable for changing a working mode of the plates from a cold producing one to a heat producing one; thus, the present apparatus can provide cool in summer and warmth in winter.

It is yet another object of the present invention to provide additional heating device such as ceramic heating tube to the present air feeding apparatus so that the heating effect can be stronger.

It is still another object of the present invention to provide an air feeding apparatus, which has a conduit connected to an outlet thereof so that air can be conveyed to any desired locations or other objects, e.g. an inflatable mattress, according to needs, and which consumes less power than conventional air conditioners, and is compact, and light in weight to be easily carried.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIGS. 1,2, and3, a preferred embodiment 1 of an air feeding apparatus in the present invention includes a main housing11, a control box12, air supplying chamber13, and an air pump14as main parts.

A power supplier121is disposed in the housing12, and has a switch122for controlling on and off of power. The switch122can be of a manual control type or a remote control type used together with a remote control (not shown).

A cold producing plate131as well as a ceramic heating tube132are disposed in the air supplying chamber13while heat dissipating fins133and an electric cooling fan134are disposed outside the air supplying chamber13. A water collecting dish135is disposed under the cold producing plates131for collecting condensed water formed on the plate131. Capillaries136are provided for conveying water collected in the dish135to the heat dissipating fins133. And, the cooling fan134can work to move cool air onto the heat dissipating fins133to help dissipate heat and condensed water on the fins133.

The air pump14provides compressed air, and is connected to the air supplying chamber13at an outlet thereof while a conduit142is connected to an outlet of the air supplying chamber13, and sticks out of the housing11. Thus, cold or heat in the air supplying chamber13can be conveyed outside the housing11via the conduit142for use by means of air of the air pump14. An outlet of the conduit142can be connected to an inflatable mattress2, a respirator or a small room according to needs. Because air from the present apparatus has been changed to desirable temperature, when an inflatable mattress is inflated with air from the present apparatus, the air will provide suitable temperature to the users of the mattress.

A valve143is provided, which can be switched to a first position for connecting the outlet of the air pump14to a first long pipe141wound to pass in front of the fan134several times; thus, when the present air feeding apparatus is used to supply cold, heat can be greatly dissipated by the fan134, which is produced by the air pump14and carried by air from the pump14. The valve143can be switched to a second position for connecting the outlet of the air pump14to a second short pipe144arranged so as not to face the fan134; thus, when the present air feeding apparatus is used to supply warm air, heat won't be dissipated by the fan134, which is produced by the air pump14and carried by air from the pump14, and in turns, the warm air can be provided with still higher temperature.

To use the air feeding apparatus for supplying cold, the switch122is moved to on position to actuate the power supplier121, a switching circuit123made to be in a cool-producing mode, and the cold producing plate131are made to produce cold with Hall effect. Heat is dissipated by means of the fins133and the fan134. And, the air pump14works to move air through the air supplying chamber13, and in turns, cool air is conveyed outside for use via the conduit142. To increase cooling effect of the apparatus, the valve143is preferably switched to the first position so that the outlet of the air pump14is connected to the first long pipe141for allowing heat to be dissipated, which is produced by the air pump14and carried by air from the pump14. To use the air feeding apparatus for supplying heat, positive and negative terminals of the cold producing plate131are first made to be in reverse direction by means of the switching circuit123such that the cold producing plate131are made to produce heat instead of cold. If the cold producing plate131alone can't supply sufficient heat, the ceramic heating tubes132are used to provide more heat, and the valve143is moved to the second position for connecting the outlet of the air pump14to the second short pipe144.

Furthermore, additional cold producing plate131can be disposed in the chamber13, and connected to each other to enhance performance of the present apparatus.

From the above description, it can be easily understood that the air feeding apparatus of the present invention is compact, light in weight, and portable, and can help an inflatable mattress provide significantly increased comfort to the users because it can inflate the mattress with air of desirable temperature.