Air Regulating Device for Indoor and Outdoor Air Circulation

Abstract

An air regulating device includes a casing assembly, an outdoor fresh air regulator, a fan assembly, and a heating assembly. The casing assembly includes a front casing having a first fresh air inlet and an air outlet, and a rear casing has a second fresh air inlet. The outdoor fresh air regulator includes a front damper gate coupled at the front casing to selectively open and close the first fresh air inlet, and a rear damper gate coupled at the rear casing to selectively open and close the second fresh air inlet. The fan assembly is arranged to suck outdoor fresh air from the second fresh air inlet to the air outlet. The heating assembly is disposed within the air tunnel for heating up the outdoor fresh air before entering into the indoor side at the air outlet.

What is claimed is: 
     
         1 . An air regulating device for indoor and outdoor air circulation, comprising:
 a casing assembly  10  comprising a front casing  11  and a rear casing  12  securely coupled to the front casing  11 , wherein the front casing  11  has an air outlet  11  and a first fresh air inlet  112 , wherein the rear casing  12  has a second/third fresh air inlet  121 A,  121 B;   an outdoor fresh air regulator  20  comprising a front damper gate  21  coupled at the front casing and a rear damper gate  22  coupled at the rear casing, wherein the front and rear damper gates  21 ,  22  are movable at the front and rear casings to fully open, fully close, and partially open-partially close the first fresh air inlet of the front casing and the second/third fresh air inlet of the rear casing respectively for introducing an outdoor fresh air into a room and for providing an indoor and outdoor air circulation;   a fan assembly  30  comprising a first/second fan wheel  31 A/ 31 B, a first/second fan wheel housing  32 A,  32 B, a first/second air tunnel  33 A,  33 B, and a first/second motor  34 A,  34 B, wherein the first/second fan wheel  31 A,  31 B is laterally supported in the first/second fan wheel housing  32 A,  32 B, wherein the first/second air tunnel  33 A,  33 B is coupled at a lower portion of the first/second fan wheel housing  32 A,  32 B, wherein the first/second motor  34 A,  34 B is electrically connected to a shaft of the first/second fan wheel; and   a heating assembly  40  supported at an air tunnel outlet of the first/second air tunnel  33 A,  33 B and electrically connected to a control switch.   
     
     
         2 . The air regulating device, as recited in  claim 1 , wherein the front and rear casings  11 ,  12  of the casing assembly are coupled with each other by connecting four corners of the front casing to four corners of the rear casing via screws, wherein the first fresh air inlet  112  and the air outlet  111  are provided at upper and lower portions of front casing respectively, wherein the air outlet is located corresponding to the heating assembly, wherein each of first fresh air inlet  112  and the air outlet  111  has a plurality of air through apertures being lined up regularly or irregularly, wherein the second/third fresh air inlet  121 A,  121 B is provided at an upper portion of the rear casing and has a plurality of air through apertures being lined up regularly or irregularly. 
     
     
         3 . The air regulating device, as recited in  claim 1 , wherein the front damper gate  21  comprises a first gate plate  211 , two front gate sliders  212  each having a front gate sliding groove, and a front damper gate positioning assembly  213 , wherein the first gate plate  211  has a size larger than the first fresh air inlet  112 , wherein the two front gate sliders  212  are provided at two sides of the first fresh air inlet  112  of the front casing, wherein two sides of the first gate plate  211  are slidably coupled at the front gate sliders  211  respectively to allow the first gate plate  211  being moved up and down, wherein the front damper gate positioning assembly  213  is arranged to retain the first gate plate  211  after the first gate plate  211  is moved in a desired position. 
     
     
         4 . The air regulating device, as recited in  claim 3 , wherein the front damper gate positioning assembly  213  comprises a plurality of elastic positioning protrusions  2131  spacedly provided at the two sides of the first gate plate  211  and a plurality of positioning recesses  2132  spacedly indented on inner walls of the front gate sliding grooves of the two front gate sliders  212  corresponding to the elastic positioning protrusions  2131 , wherein when the first gate plate  211  is moved up and down in the desired position, the elastic positioning protrusions  2131  are engaged with the positioning recesses  2132  so as to retain the first gate plate  211  in the desired position. 
     
     
         5 . The air regulating device, as recited in  claim 4 , wherein each of the elastic positioning protrusions  2131  comprises a ball-shaped retention pin  21311 , a spring  21312 , and a spring slot  21313  formed at the side of the first gate plate to receive the spring  21312 , wherein the spring  21312  has one end biasing against the retention pin  21311  and an opposed end affixing to a bottom of the spring slot  21313 , such that a portion of the retention pin  21311  is pushed, via the spring  21312 , out of the spring slot  21313 . 
     
     
         6 . The air regulating device, as recited in  claim 1 , wherein the rear damper gate  22  comprises a second gate plate  221  and two rear gate sliders  222 , wherein the rear gate plate  221  has a size larger than the second/third fresh air inlet  121 A,  121 B, wherein the two rear gate sliders  222  are provided at upper and lower sides of the second/third fresh air inlet  121 A,  121 B of the rear casing, wherein two sides of the second gate plate  211  are slidably coupled at the rear gate sliders  222  respectively, such that the second gate plate  211  is actuated to move left and right along the rear gate sliders  222 . 
     
     
         7 . The air regulating device, as recited in  claim 1 , wherein the first/second fan wheel housing  32 A,  32 B is configured to have an arc-shaped body, wherein two first end covers  321 A are coupled at two sides of the first fan wheel housing  32 A respectively, wherein the first motor  34 A is installed into a first motor base  341 A, wherein the first motor base  341 A is securely coupled at an exterior side of one of the first end covers  321 A, wherein each of the first end covers  321 A has a first bearing slot  322 A, wherein a first motor bearing  323 A is installed into the first bearing slot  322 A of the first end cover  321 A, wherein four first screw hole seats  326 A are formed at four corners of an opening rim of the first fan wheel housing  32 A, wherein an opening of the second fan wheel housing  32 B is configured to face toward the rear casing  12 , wherein two second screw hole seats  323 B are provided at upper and lower portions of the second fan wheel housing  32 B at an exterior side thereof, wherein the second motor  34 B is coupled within the second fan wheel housing  32 B and the second fan wheel  31 B, wherein two ends of the second motor  34 B are coupled at the second fan wheel housing  32 B and the second fan wheel  31 B respectively, wherein one end of the second motor  32 B is a motor shaft coupled to the second fan wheel  31 B, wherein upper and lower ends of the first/second wheel housing  32 A,  32 B are configured as a first/second fan air inlet  324 A,  321 B and a first/second fan air outlet  325 A,  322 B respectively, wherein the first/second wheel housing  32 A,  32 B is coupled to the rear casing  12  through the first/second screw hole seats  326 A,  323 B via screws. 
     
     
         8 . The air regulating device, as recited in  claim 1 , wherein the first/second air tunnel  33 A,  33 B is constructed to have an arc-shaped or a U-shaped first/second front air tunnel  331 A,  331 B, and an arc-shaped first rear air tunnel  332 A or a second rear air tunnel  332 B, wherein the first/second front air tunnel  331 A,  331 B is coupled to the first/second rear air tunnel  332 A,  332 B to form an arc-shaped first/second air passage  333 A,  333 B, wherein an upper opening of the first/second air tunnel  33 A,  33 B is configured as a first/second duct air inlet  33 A 1 ,  33 B 1  coupled to the first/second fan air outlet  325 A,  322 B of the first/second fan wheel housing, wherein a lower opening of the first/second air tunnel  33 A,  33 B is configured as a first/second duct air outlet  33 A 2 ,  33 B 2  corresponding to and extending toward the air outlet  111  of the front casing  11 . 
     
     
         9 . The air regulating device, as recited in  claim 1 , wherein the heating assembly  40  comprises a PTC heating element and four L-shaped supporting frames  41  coupled at four corners of the PTC heating element to couple the PTC heating element within the first duct air outlet  33 A 2 ,  33 B 2  at the lower portion of the first air tunnel, wherein an electrode terminal of the PTC heating element is electrically connected to an external power supply and the control switch. 
     
     
         10 . An air regulating device for communicating an indoor side with an outdoor side, comprising:
 a casing assembly comprising a front casing having has a first fresh air inlet and an air outlet for communicating with the indoor side, and a rear casing has a second fresh air inlet for communicating with the outdoor side, wherein the front and rear casings are securely coupled with each other;   an outdoor fresh air regulator comprising a front damper gate movably coupled at the front casing to selectively open, close, or partially open-partially close the first fresh air inlet, and a rear damper gate movably coupled at the rear casing to selectively open, close or partially open-partially close the second fresh air inlet;   a fan assembly comprising a motor, a fan wheel driven to operate by the motor, a fan wheel housing receiving the fan wheel therein and communicating with the first and second fresh air inlet, and an air tunnel extended from the fan wheel housing to the air outlet, wherein when the rear damper gate is operated to open up the second fresh air inlet, the fan wheel driven to operate by the motor for sucking an outdoor fresh air from the outdoor side to the indoor side at the air outlet through the air tunnel, wherein when the rear damper gate is operated to close the second fresh air inlet and when the front damper gate is operated to open up the first fresh air inlet, the fan wheel driven to operate by the motor for circulating an indoor air at the indoor side; and   a heating assembly within the air tunnel for heating up the outdoor fresh air or indoor air before entering into the indoor side at the air outlet.   
     
     
         11 . The air regulating, as recited in  claim 10 , wherein the front damper gate comprises a first gate plate having a size larger than the first fresh air inlet and two front gate sliders, each having a front gate sliding groove, provided at two sides of the first fresh air inlet of the front casing respectively, wherein two sides of the first gate plate are slidably coupled at the front gate sliding groove of the front gate sliders respectively to allow the first gate plate being moved up and down in a desired position for selectively open and close the first fresh air inlet. 
     
     
         12 . The air regulating, as recited in  claim 11 , wherein the front damper gate further comprise a front damper gate positioning assembly is arranged to retain the first gate plate in the desired position, wherein the front damper gate positioning assembly comprises a plurality of elastic positioning protrusions spacedly provided at the two sides of the first gate plate and a plurality of positioning recesses spacedly indented on inner walls of the front gate sliding grooves of the two front gate sliders corresponding to the elastic positioning protrusions, wherein when the first gate plate is moved up and down in the desired position, the elastic positioning protrusions are engaged with the positioning recesses to retain the first gate plate in the desired position. 
     
     
         13 . The air regulating device, as recited in  claim 12 , wherein each of the elastic positioning protrusions comprises a ball-shaped retention pin, a spring, and a spring slot formed at the side of the first gate plate to receive the spring, wherein the spring has one end biasing against the retention pin and an opposed end affixing to a bottom of the spring slot, such that a portion of the retention pin is pushed, via the spring, out of the spring slot. 
     
     
         14 . The air regulating device, as recited in  claim 12 , wherein the rear damper gate comprises a second gate plate having a size larger than the second fresh air inlet, and two rear gate sliders provided at upper and lower sides of the second fresh air inlet of the rear casing respectively, wherein two sides of the second gate plate are slidably coupled at the rear gate sliders respectively, such that the second gate plate is actuated to move left and right along the rear gate sliders. 
     
     
         15 . The air regulating device, as recited in  claim 14 , wherein the motor is coupled at an exterior side of the fan wheel housing to couple with the fan wheel within the fan wheel housing so as to drive the fan wheel to rotate within the fan wheel housing. 
     
     
         16 . The air regulating device, as recited in  claim 14 , wherein the motor is coupled within the fan wheel housing and the fan wheel, wherein the motor has one end coupled at the fan wheel housing and an opposed motor end coupled to the fan wheel so as to drive the fan wheel to rotate within the fan wheel housing. 
     
     
         17 . The air regulating device, as recited in  claim 15 , wherein the air tunnel is constructed to have an arc-shaped front air tunnel and a rear air tunnel coupled thereto to form an arc-shaped air passage, wherein the air tunnel has an upper opening serving as a duct air inlet coupled to the fan wheel housing and a lower opening serving as a duct air outlet extending toward the air outlet of the front casing. 
     
     
         18 . The air regulating device, as recited in  claim 16 , wherein the air tunnel is constructed to have an arc-shaped front air tunnel and a rear air tunnel coupled thereto to form an arc-shaped air passage, wherein the air tunnel has an upper opening serving as a duct air inlet coupled to the fan wheel housing and a lower opening serving as a duct air outlet extending toward the air outlet of the front casing. 
     
     
         19 . The air regulating device, as recited in  claim 17 , wherein the heating assembly comprises a PTC heating element coupled within the duct air outlet of the air tunnel. 
     
     
         20 . The air regulating device, as recited in  claim 18 , wherein the heating assembly comprises a PTC heating element coupled within the duct air outlet of the air tunnel.