A new type of high-performance energy recovery ventilator using several cross-flow fans.

Abstract

This novel invention provides a high-efficiency total heat exchanger using cross-flow fans. It innovatively employs multiple cross-flow fans, which significantly improves the exhaust volume of indoor stale air and the intake volume of outdoor fresh air, as well as the heat exchange rate. Because the unit structure does not have ductwork, it can be used as a vertical or horizontal window-type unit, which can greatly reduce the cost of the equipment. To reduce energy consumption, the number of cross-flow fans can be reduced or the number of fans that need to be turned on can be reduced by circuit design. If ductwork is added or some cross-flow fans are replaced with multi-blade centrifugal fans, it can achieve the ventilation effect of one unit for multiple rooms.

Claims

1. A high-efficiency total heat exchanger employing a cross-flow fan, comprising: An external chassis housing, which is a rectangular elongated column, has corresponding air inlets and outlets on at least two of its four sides; A total heat exchange core, which is also a rectangular elongated column and smaller in size than the chassis housing, is located in the center of the chassis housing. At least one of the four spaces formed by the four outer walls of the four sides of the total heat exchange core and the inner walls of the four corners of the chassis housing is equipped with a motor-driven cross-flow fan to provide air intake or exhaust airflow to the corresponding air inlet and outlet, so that fresh outdoor air and stale indoor air can be introduced into the total heat exchange core for heat exchange, and then introduced into the indoor and outdoor spaces respectively, thereby improving ventilation and heat exchange efficiency.

2. The high-efficiency total heat exchanger using a cross-flow fan as described in claim 1 has a rectangular elongated column housing with two air outlets or inlets on two of the four side planes of the housing, so as to facilitate the rapid entry and exit of a large amount of air, achieving a large gas flow rate and a rapid thermal equilibrium effect.

3. The high-efficiency total heat exchanger using cross-flow fans as described in claim 1, wherein several cross-flow fans are newly adopted, and each air outlet or inlet of the casing is equipped with a cross-flow fan or its base motor, but is not limited to having a cross-flow fan or motor installed inside each air outlet or inlet. In order to reduce equipment costs and normal power consumption, the number of cross-flow fans or motors can be appropriately reduced, or the number of cross-flow fans or motors started can be controlled by circuit design.

4. The high-efficiency total heat exchanger using a cross-flow fan as described in claim 1 has a fixed protruding frame and clamps around its casing, which can be directly fixed and locked to the window frame, and used as a vertical or horizontal window-type total heat exchanger. Compared with existing commercially available total heat exchangers, it can reduce the expensive installation cost of existing similar products.

5. The high-efficiency total heat exchanger using a cross-flow fan as described in Request 1, wherein the newly adopted cross-flow fan or total heat exchange core can be adjusted in length to match the size of the house or the window size, or the overall length of the rectangular column of the total heat exchanger, in order to improve its heat exchange efficiency.

6. The high-efficiency total heat exchanger using a cross-flow fan as described in claim 1 has a hinged cover at the top of its rectangular cylindrical casing that is easy to open and fix, so that the high-efficiency total heat exchange core, each cross-flow fan, or protective device can be easily pulled out along its axial direction for cleaning, maintenance, or replacement, thereby maintaining the cleanliness of the internal components of the total heat exchanger and its heat exchange efficiency.

7. The high-efficiency total heat exchanger using a cross-flow fan as described in claim 1 may be equipped with several filtration or protective devices, including at least one of a pre-filter, activated carbon filter, high-efficiency filter, electrostatic precipitator, ozone sterilizer, and UV germicidal lamp, on the external airflow duct A for the intake of fresh outdoor air and the internal airflow duct B for the exhaust of stale indoor air. However, this invention is not limited to these. The casing is also provided with easily openable gaps so that the above-mentioned protective devices can be easily pulled out for cleaning, maintenance, or replacement, thereby achieving overall cleanliness and airflow efficiency of the total heat exchanger.

8. The high-efficiency total heat exchanger using a cross-flow fan as described in claim 1 can be equipped with temperature or carbon dioxide sensors both outdoors and indoors to detect and track the difference in temperature or carbon dioxide concentration between outdoor and indoor air, and accordingly select to turn on or off some cross-flow fans, or turn the entire unit on or off, in order to save on electricity costs.

9. As described in claim 1, if a high-efficiency total heat exchanger using a cross-flow fan is required to provide long-distance air intake or exhaust to other rooms in the house, an indoor duct connecting to or extending to other rooms can be installed at the indoor side opening of the total heat exchanger. The cross-flow fan at the indoor side can be replaced with a multi-blade centrifugal fan to achieve the effect of one unit serving multiple rooms. Furthermore, the interior of the other outdoor side of this innovative total heat exchanger can also have a cross-flow fan placed in an opening adjacent to the outside to achieve the effect of large-volume and rapid air exchange, similar to a window-type unit.

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