Patent Application
20090188648
1. Field of the Invention
The present invention relates to a heat exchanger, and more particularly to a heat exchanger which can improve the efficiency of heat transmission.
2. Description of the Prior Art
Currently, heat exchangers are widely used in different kinds of apparatuses or systems, such as automotive industry apparatus, ordinary air conditioners or cooling systems, and are divided into water-cooled heat exchanger and air-cooled heat exchanger. The common water-cooled heat exchanger, such as shell and tube heat exchanger and coil heat exchanger. However, dirt or dust is likely to be accumulated in such heat exchangers after a long period of use, as a result, the efficiency of heat transmission is reduced, the energy is reduced largely and the cost is increased. Therefore, the author of this present invention has invented a heat exchanger with a cleaning device.
The heat exchanger with a cleaning device described in TW Pat. serial number 095208891 comprises a heat exchanger assembly and a cleaning device. The heat exchange assembly comprises a plurality of parallel exchange tubes. Both ends of each exchange tube are disposed at a front positioning board and a rear positioning board of the cleaning device, respectively. A moving board disposed between the front and rear positioning boards is movably disposed at the exchange tubes. The moving board is disposed with a plurality of brushes received in receiving holes defined in the moving board and a driving assembly for driving the moving board to move with respect to the exchange tubes. Such structures can prevent the dirt or dust from being accumulated in the exchange tubes, thus improving the efficiency of the heat exchanger and saving the energy. However, the structure of such a brush is complex and the heat energy produced by such a heat exchanger is increased. Thereby, a new heat exchanger which can simplify the structure of the cleaning device, improve the efficiency of heat radiation and save the energy is developed.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary objective of the present invention is to provide a heat exchanger comprises a plurality of heat exchange tubes inserted into a cleaning device. The cleaning device has the effect of movably scraping the dirt or dust accumulated in an outer side of each heat exchange tube, and a watering device is provided for spraying water to lower the temperature of the heat exchange tubes and to clean the heat exchange tubes. The cleaning device cooperates with the watering device to scrap the dirt or dust accumulated in the heat exchange tubes, clean and lower the temperature of the heat exchange tubes, so as to prevent the dirt or dust from being accumulated in the heat exchange tubes, to improve the radiating effect of the heat exchange tubes and save the energy and to prolong the life of the apparatus.
To achieve the objective of the present invention, the heat exchanger comprises a plurality of heat exchange tubes inserted into a cleaning device having a moving board, at least two blocking boards and a plurality of scraping members. The moving board is defined with a plurality of penetrated receiving holes for receiving the scraping members. The blocking boards are fixed to both sides of the moving board and are provided for restricting the scraping members. In a center of each scraping member is defined a through hole for insertion of the heat exchange tube. Each blocking board is defined with a plurality of through holes corresponding to the receiving holes of the moving board, and a diameter of the through holes is smaller than that of the receiving holes. An upper portion of the heat exchange tubes is disposed with a watering device having an inlet pipe parallel to the heat exchange tubes. The inlet pipe is vertically disposed with a plurality of watering pipes towards the heat exchange tubes. A reserve U-shaped blocking cover wraps a periphery of each watering pipe, and an opening of the blocking cover is faced to the heat exchange tubes. Each watering pipe is defined with a plurality of spraying holes adjacent to both sides of the blocking cover.
Since the moving board of the cleaning device moves on the heat exchange tubes, the scraping members of the cleaning device scrap the dirt or dust accumulated in the heat exchange tubes, and the watering pipes of the spraying device are provided for spraying water, the heat exchange tubes can be cleaned and the heat of the heat exchange tubes can be radiated simultaneously, so as to prevent the dirt or dust from being accumulated in the heat exchange tubes, thus improving the radiating effect of the heat exchange tubes, saving the energy and prolonging the life of the apparatus.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiments in accordance with the present invention.
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Since the moving board 21 of the cleaning device 20 moves on the heat exchange tubes 13, the scraping members 22 of the cleaning device 20 scrap the dirt or dust accumulated in the heat exchange tubes 13, and the spraying holes 320 of each watering pipe 32 of the spraying device 30 are provided for spraying water, the heat exchange tubes 13 can be cleaned and the heat of the heat exchange tubes 13 can be radiated simultaneously. Thereby, the efficiency of the heat exchange tubes 13 can be improved, the energy can be saved, and the life of the devices using the heat exchange tubes 13 can be prolonged.
With the above-mentioned structures, the present invention has the advantages described as follows:
Firstly, cleaning and heat radiation effects: since the moving board 21 of the cleaning device 20 moves the heat exchange tubes 13, the scraping members 22 of the cleaning device 20 scrap the dirt or dust accumulated in the heat exchange tubes 13, and the spraying holes 320 of each watering pipe 32 of the spraying device 30 are provided for spraying water, the heat exchange tubes 13 can be cleaned and the heat of the heat exchange tubes 13 can be radiated simultaneously.
Secondly, improving the efficiency: since the spraying holes 320 of each watering pipe 32 of the spraying device 30 are provided for spraying water, the heat exchange tubes 13 can be cleaned and the heat of the heat exchange tubes 13 can be radiated simultaneously at the time of scraping the dirt or dust accumulated in the heat exchange tubes 13, thus improving the efficiency of the heat exchange tubes 13 and saving the energy.
Thirdly, the application of multi-variety of industry: since the spraying holes 320 of each watering pipe 32 of the spraying device 30 are provided for spraying water, the heat exchange tubes 13 can be cleaned and the heat of the heat exchange tubes 13 can be radiated simultaneously at the time of scraping the dirt or dust accumulated in the heat exchange tubes 13, thus improving and stabilizing the efficiency of the peripheral products (such as apparatus and air conditioner) used in the heat exchange tubes 13, and prolonging the life of the apparatus of using the heat exchange tubes 13.
While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
