Combination cooling and heating fan structure

Abstract

A combination cooling and heating fan structure includes an electronic device for controlling a driving device to drive a fan blade assembly to rotate within a first rotational speed range and thereby cause cold convection when the driving device is started alone. The electronic device includes a limiting module for limiting the driving device to rotate within a second rotational speed range, which is smaller than the first rotational speed range, when the driving device and a heating device are started at the same time. That is, when the driving device and the heating device are started simultaneously, the limiting module limits the driving device to rotate within the second rotational speed range for the fan blade assembly to blow hot air through an indoor environment and cause heat convection, which increases the temperature of the indoor environment while preventing quick loss of thermal energy during the heat convection.

1 . A combination cooling and heating fan structure, comprising a driving device for driving a fan blade assembly to rotate and a heating device for producing hot air; the driving device and the heating device being electrically connected to an electronic device, the electronic device controlling the driving device to rotate within a preset first rotational speed range and accordingly, drive the fan blade assembly to rotate and cause cold convection; and the electronic device also selectively controlling the heating device to produce the hot air; the combination cooling and heating fan structure being characterized in:
 the electronic device includes a limiting module capable of limiting the driving device to rotate at a speed within a second rotational speed range, which is smaller than the first rotational speed range, when the driving device and the heating device are started at the same time, whereby the fan blade assembly blows the hot air to cause heat convection.   
     
     
         2 . The combination cooling and heating fan structure as claimed in  claim 1 , wherein the electronic device includes:
 a regulating unit electrically connected to the driving device for controlling the driving device to rotate at a speed within the first rotational speed range;   a speed-limiting unit electrically connected to the driving for controlling the driving device to rotate at a speed within the second rotational speed range;   a current-dividing unit electrically connected to the regulating unit, the speed-limiting unit and the heat device for selectively transmitting an external power supply to only the regulating unit or to both of the speed-limiting unit and the heating device; and   a processing unit electrically connected to the current-dividing unit for controlling the current-dividing unit to transmit the external power supply to only the regulating unit or to both of the speed-limiting unit and the heating device; and   wherein the speed-limiting unit and the current-dividing unit together form the limiting module.   
     
     
         3 . The combination cooling and heating fan structure as claimed in  claim 2 , wherein the processing unit generates a first control signal to the current-dividing unit when only the driving device is started, so that the current-dividing unit having received the first control signal transmits the external power supply to only the regulating unit; and wherein the processing unit generates a second control signal to the current-dividing unit when both of the driving device and the heating device are started, so that the current-dividing unit having received the second control signal transmits the external power supply to both of the speed-limiting unit and the heating device. 
     
     
         4 . The combination cooling and heating fan structure as claimed in  claim 1 , wherein the electronic device includes:
 a regulating unit electrically connected to the driving device for controlling the driving device to rotate at a speed within the first rotational speed range;   a suppressing unit electrically connected to the regulating unit for suppressing the regulating unit, so that the regulating unit drives the driving device to rotate only at a speed within the second rotational speed range.   a current-dividing unit electrically connected to the regulating unit and the heating device for selectively transmitting an external power supply to only the regulating unit or to both of the regulating unit and the heating device; and   a processing unit electrically connected to the current-dividing unit and the suppressing unit for controlling the current-dividing unit to transmit the external power supply to only the regulating unit or to both of the regulating unit and the heating device; and   wherein the suppressing unit and the current-dividing unit together form the limiting module.   
     
     
         5 . The combination cooling and heating fan structure as claimed in  claim 4 , wherein the processing unit generates a first control signal to the current-dividing unit, so that the current-dividing unit starts only the driving device via the regulating unit and limits the driving device to rotate at a speed within the first rotational speed range; and wherein the processing unit generates a second control signal to both of the current-dividing unit and the suppressing unit, so that the driving unit rotates at a speed within the second rotational speed range and the heating device is driven to produce hot air. 
     
     
         6 . The combination cooling and heating fan structure as claimed in  claim 2 , wherein the current-dividing unit and the processing unit together constitute a microprocessor. 
     
     
         7 . The combination cooling and heating fan structure as claimed in  claim 1 , wherein the first and the second rotational speed range have the same low limit while the first rotational speed range has a high limit larger than that of the second rotational speed range. 
     
     
         8 . The combination cooling and heating fan structure as claimed in  claim 1 , further comprising a wireless receiver module electrically connected to the electronic device; the wireless receiver module being wirelessly connected to a portable mobile device, so that the portable mobile device can start the driving device and the heating device via the wireless receiver module. 
     
     
         9 . The combination cooling and heating fan structure as claimed in  claim 1 , further comprising a sensing device electrically connected to the electronic device for detecting different physical quantities in an indoor environment; and the electronic device being caused to turn off the driving device and the heating device when the sensing device detects any specific physical quantity is higher or lower than a preset value. 
     
     
         10 . The combination cooling and heating fan structure as claimed in  claim 9 , wherein the sensing device includes a temperature sensor unit for detecting an indoor temperature and a humidity sensor unit for detecting an indoor humidity level; and the electronic device stopping the driving device and the heating device from operating when the temperature sensor unit detects an indoor temperature that is too high relative to a corresponding preset value or the humidity sensor unit detects an indoor humidity level that is too low relative to a corresponding preset value. 
     
     
         11 . The combination cooling and heating fan structure as claimed in  claim 1 , wherein the driving device includes an oscillating assembly for causing the fan blade assembly to oscillate, and the electronic device being able to selectively control the oscillating assembly to oscillate the fan blade assembly. 
     
     
         12 . The combination cooling and heating fan structure as claimed in  claim 3 , wherein the current-dividing unit and the processing unit together constitute a microprocessor. 
     
     
         13 . The combination cooling and heating fan structure as claimed in  claim 4 , wherein the current-dividing unit and the processing unit together constitute a microprocessor. 
     
     
         14 . The combination cooling and heating fan structure as claimed in  claim 5 , wherein the current-dividing unit and the processing unit together constitute a microprocessor.