Patent Application
20070102233
1. Field of the Invention
The present invention is related to an air pumping device used in an aquarium, and especially to a pumping device with a silencing effect.
2. Description of the Prior Art
A pumping device used in an aquarium mainly pumps air into water by means of an air pump to supply sufficient air for the living things bred in the aquarium. A pumping device used presently mainly has an pumping device connected exteriorly thereof with a waving arm having on its tailing end a magnet; an electrically connected coil is used to generate an alternating magnetic field to attract and repulse the magnet for making the waving arm move to and fro, thereby a diaphragm is moved to render the air pump to continuously reject air.
By the fact that an air pump generates unpleasant and sustaining noise during operation, some air pumps are installed with silencing equipment at air exhaust ports, silencing units are provided on the main bodies of the air pumps; thereby air pumped out by the air pumps exhausts after passing through the silencing units, and an effect of silencing can be achieved.
These conventional air pumps have the problem that the main bodies of the air pumps are small and the silencing units added are not large enough, hence the effect of silencing is limited. Particularly, only the air ejected from the air pumps are silenced; the noise getting in the air pumps are unable to be eliminated.
And some air pumps are installed with silencing equipment also at air inlets, by virtue that the areas of the air inlets are so small that only a small silencing unit can be mounted for each of them, the effect of silencing is limited too, and there is further a problem of difficulty in mounting.
In view of the above stated limitations of the conventional techniques, the inventor of the present invention breaks through the conventional thought to provide a brand new air pumping device in which a silencing unit is not attached to the main body of the air pump, rather, the silencing unit is installed in a housing of the air pumping device; in this way, the space for the silencing unit is largely increased, and the silencing unit can be designed to have a front silencing chamber and a rear silencing chamber, and a complete silencing effect can be obtained.
Accordingly, the air pumping device used in an aquarium with the silencing effect provided by the present invention mainly has a housing, the housing is used to receive therein an air pump and a coil unit able to generate an alternating magnetic field; and the housing is formed therein a sealed silencing chamber covered with a covering plate. The silencing chamber has therein partitions to divide it into a front silencing chamber and a rear silencing chamber. When the air pump is operated, air is led firstly into the front silencing chamber, the air flows through the air pump and then is led into the rear silencing chamber; after an action of buffering, the air exhausts from the housing through an end of the silencing chamber.
Because the silencing unit is designed to be installed in the housing of the air pumping device, the space for the silencing unit is largely increased, and the silencing unit can be designed to have a front silencing chamber and a rear silencing chamber, air at an inlet as well as at an air exhaust port can both be silenced, and a complete silencing effect can be obtained, the aquarium has no more disturbing noise.
The present invention will be apparent in its structural features and effect of using after reading the detailed description of the preferred embodiments thereof in reference to the accompanying drawings.
Referring to
The present invention has a housing 10 composed of a top cover 11 and a base 12, the top cover 11 has four corners extending downwards over the bottom surface of the base 12 to form feet having on their ends rubber pads 13. The base 12 is used to receive therein the air pump 20 and a coil unit 30 able to generate an alternating magnetic field.
The air pump 20 has a cylinder 21, the cylinder 21 is provided with a diaphragm 22 being slipped over a front end of the cylinder 21; the diaphragm 22 is connected with a waving arm 23. The waving arm 23 has a hinge 24 on one end thereof, and has a magnet 25 on its other end.
The coil unit 30 mainly has a coil 31, it is supplied with electric power from a power line 32 via a transformer 33, so that the coil 31 can generate an alternating magnetic field to attract and repulse the magnet 25 for making the waving arm 23 move to and fro, thereby a diaphragm 22 is moved to render the air pump 20 to continuously reject air. Because this is same as the conventional techniques, no further description for it is necessary.
Referring to
The silencing chamber 40 is composed of a front silencing chamber 461 and a rear silencing chamber 462 to be divided into a plurality of air chambers 461a, 461b, 462a and 462b with partitions, the air chambers 461a and 461b are communicated with each other and also the air chambers 462a and 462b are communicated with each other by means of openings 45 provided on the partitions 44.
The front silencing chamber 461 is communicated with the air inlet 42, so that air can be led in here at the communicating area. An air outlet on the end of the front silencing chamber 461 is connected with an air inlet of the air pump 20.
The rear silencing chamber 462 has an air inlet connected with an exhausting hole of the air inlet 42, and has an end connected with the air exhausting pipe 43, so that air can be exhausted from the housing 10.
Some of the air chambers formed by dividing the front silencing chamber 461 and the rear silencing chamber 462 with the partitions 44 are tortuous air chambers; they give a buffering action for the air flowing through to get an effect of eliminating noise.
Because that the present invention is designed to have the silencing chamber 40 provided in the housing 10, it can largely increase the space of the silencing unit to get the front silencing chamber 461 and the rear silencing chamber 462, so that the air entering or exhausting from the air pump 20 can all be silenced; hence a complete silencing effect can be surely obtained, and the aquarium has no more sustaining disturbing noise.
And more, referring to
Referring to
The front silencing chambers 861 are communicated with the air inlets 82 to allow air to be led in; air outlets on the ends of the rear silencing chambers 862 are connected respectively to the air inlets of the two air pumps 601 and 602.
The air inlets of the two rear silencing chambers 862 are connected respectively to exhausting holes of the two air pumps 601 and 602, the ends of the rear silencing chambers 862 are connected respectively to exhausting pipes 83 in order that air is exhausted from the housing 50.
A plurality of air chambers formed by dividing the two front silencing chambers 861 and the two rear silencing chambers 862 with partitions provide buffering action for the high speed air flowing through to get an effect of eliminating noise.
Obviously, the present invention is not limited to what is depicted in the drawings; it will be apparent to those skilled in this art that various modifications or changes can be made to the elements of the present invention without departing from the spirit and scope of this invention, such as increasing the amount of air pumps or air chambers of the silencing chamber, all such modifications and changes also fall within the scope of the appended claims.
