Constant humidity evaporative wicking filter humidifier

• US 5,061,405 A
• Filed: 02/12/1990
• Issued: 10/29/1991
• Est. Priority Date: 02/12/1990
• Status: Expired due to Term

• Current Assignee: Essick Air Products Incorporated
• Original Assignee: Emerson Electric Company
• Inventors: Brant, Ronald G., Townsend, Donald L., Stanek, Terrence L.
• Primary Examiner(s): Miles, Tim
• Application Number:
  US07/478,423
• Time in Patent Office: 624 Days
• Field of Search: 261/104, 261/DIG. 48, 261/26, 261/66, 261/72.1
• US Class Current: 261/26
• CPC Class Codes: F24F 6/043 with self-sucking action, e.g. wicks

Abstract

A constant humidity evaporative wicking filter humidifier is disclosed as having a water reservoir tank for holding a supply of water. The water reservoir tank is mounted on a supporting base and is constructed to dispense water as needed into a catch basin formed in the supporting base. A wick element of predetermined height has its lower end positioned within the catch basin for absorbing water up into the wick element by capillary action. A motor driven fan is also mounted on the supporting base relative to the wick element for drawing air with increased humidity through the wick element for discharge from the humidifier into the surrounding atmosphere. The water reservoir tank includes a valve which is selectively responsive to the level of water in the catch basin for dispensing water from the water reservoir tank into the catch basin when the water in the catch basin is below a predetermined level. The fan is driven by a motor that is mounted within a one-piece injection molded motor frame having quick interconnect locking elements for assembly of the motor frame to the supporting base and for quick assembly of other electrical components to the motor frame.

Claims

1. A humidifier including:

a supporting base;

at least one water reservoir tank, at least one wick element and a motor driven fan each mounted relative to said supporting base and positioned in adjacent relationship to each other in said humidifier;

each said water reservoir tank having a predetermined width, depth and height dimension, each said wick element and said motor driven fan being located within the dimensional confines of planes extending through end surfaces at each end of the predetermined height and depth dimensions of each said water reservoir tank;

each said water reservoir tank being enclosed, refillable and removably positioned relative to said supporting base to facilitate refilling thereof, each said water reservoir tank also being constructed to dispense water into a catch basin associated with said supporting base;

said catch basin including a channel portion located beneath each said reservoir tank and extending laterally therefrom to an adjacent catch basin area;

each said wick element being mounted in fixed position in said humidifier during operation and being removable from said humidifier for replacement or cleaning, each said wick element also having a lower end positioned in said adjacent catch basin area for absorbing water up into the wick element by capillary action;

means for providing predetermined constant humidification of air, said last mentioned means including means associated with each water reservoir tank for maintaining a predetermined constant water depth in said catch basin above the lower end of each said wick element for constant wetting thereof; and

said motor driven fan positioned relative to each said wick element for directing air with increased humidity through each said wick element for discharge from the humidifier into the surrounding atmosphere;

2. The humidifier as defined in claim 1 wherein each said wick element and fan blades associated with said motor driven fan extend transversely relative to each said water reservoir tank.

3. The humidifier as defined in claim 1 wherein said motor driven fan is positioned relative to each said wick element to draw air through each said wick element.

4. The humidifier as defined in claim 1 wherein said motor driven fan is positioned relative to each said wick element to blow air through each said wick element.

5. The humidifier as defined in claim 1 wherein said catch basin including said adjacent catch basin area being substantially enclosed against exposure to air during operation of said humidifier.

6. The humidifier as defined in claim 5 wherein each said wick element, said motor driven fan and at least said adjacent catch basin area are contained within a housing mounted relative to said supporting base.

7. The humidifier as defined in claim 6 wherein each said water reservoir tank is mounted relative to said supporting

8. The humidifier as defined in claim 1 and including valve means selectively responsive to the level of water within the catch basin for dispensing water from the water reservoir tank into said catch basin when the water in the catch basin is below a predetermined level.

9. The humidifier as defined in claim 8 wherein the valve means of the water reservoir tank is mounted on a lower end thereof for engaging a valve activator within the catch basin to dispense water from the water reservoir tank.

10. The humidifier as defined in claim 9 wherein the lower end of the reservoir tank also includes a removable fill cap to permit filling of the reservoir tank with water, when removed from the supporting base.

11. The humidifier as defined in claim 10 including a housing containing each said wick element and said motor driven fan, air inflow openings provided in said housing along a first face thereof and air discharge openings provided on a second face of said housing.

12. The humidifier as defined in claim 11 wherein the first face of said housing comprises a rear housing face and the second face of said housing comprises a front housing face.

13. The humidifier as defined in claim 12 wherein said housing includes a hinged cover along an upper face thereof and above said wick element to enable removal and replacement of said wick element, as desired.

14. The humidifier as defined in claim 13 wherein the catch basin channel portion includes a U-shaped channel below said water reservoir tank which opens up into an enlarged receptacle below said wick element for containing water and for receiving the lower end of the wick element therewithin.

15. A humidifier including:

a supporting base;

at least one water reservoir tank, at least one wick element and motor driven fan means each mounted relative to said supporting base and positioned in adjacent relationship to each other in said humidifier;

each said water reservoir tank having av predetermined width, depth and height dimension, at least one wick element and fan blades associated with said motor driven fan extending transversely relative to each said reservoir tank, each said wick element and said motor driven fan being located within the dimensional confines of planes extending through end surfaces at each end of the predetermined height and depth dimensions of each said water reservoir tank;

each said water reservoir tank being enclosed, refillable and removably positioned relative to said supporting base to facilitate refilling thereof, each said water reservoir tank also being constructed to dispense water into a catch basin associated with said supporting base;

said catch basin including a channel portion located beneath each said reservoir tank and extending laterally therefrom to an adjacent catch basin area, said catch basin including said adjacent catch basin area being substantially enclosed against exposure to air during operation of said humidifier;

a housing mounted relative to said supporting base for containing each said wick element, said motor driven fan and at least said adjacent catch basin area, said housing including air inflow openings provided along a first face and air discharge openings provided along a second face;

each said wick element being mounted in fixed position in said humidifier during operation and being removable from said humidifier for replacement or cleansing, each said wick element also having a lower end positioned in said adjacent catch basin area for absorbing water up into the wick element by capillary action;

means for providing predetermined constant humidification of air, said last mentioned means including means associated with each water reservoir tank for maintaining a predetermined constant water depth in said catch basin above the lower end of each said wick element for constant wetting thereof; and

said motor driven fan positioned relative to each said wick element for directing air through said air flow openings for movement through each said wick element and for discharge from the humidifier with increased humidity through said air discharge openings into the surrounding atmosphere;

the relationship of each said wick element and motor driven fan to each said water reservoir tank providing a compact and efficient humidifier.

16. The humidifier as defined in claim 15 wherein each said wick element along with the fan blades associated with said motor driven fan extend transversely relative to each said water reservoir tank.

17. In a humidifier including a supporting base, the improvement comprising:

at least one water reservoir tank, at least one wick element and motor driven fan means each mounted relative to said supporting base and positioned in adjacent relationship to each other in said humidifier, each said water reservoir tank having a predetermined width, depth and height dimension, each said wick element and said motor driven fan being located within the dimensional confines of planes extending through and surfaces at each end of the predetermined height and depth dimensions of each said water reservoir tank, each said water reservoir tank being enclosed, refillable and removably positioned relative to said supporting base to facilitate refilling thereof, each said water reservoir tank also being constructed to dispense water into a catch basin associated with said supporting base, said catch basin including a channel portion located beneath each said reservoir tank and extending laterally therefrom to an adjacent catch basin area, each said wick element being mounted in fixed position in said humidifier during operation and being removable from said humidifier for replacement or cleaning, each said wick element also having a lower end positioned in said adjacent catch basin area for absorbing water up into the wick element by capillary action, means for providing predetermined constant humidification of air, said last mentioned means including means associated with each water reservoir tank for maintaining a predetermined constant water depth in said catch basing above the lower end of each said wick element for constant wetting thereof, and said motor driven fan positioned relative to each said wick element for direction air with increased humidity through each said wick element for discharge from the humidifier into the surrounding atmosphere, the relationship of each said wick element and motor driven fan to each said water reservoir tank providing a compact and efficient humidifier.

18. A humidifier including:

a rectangularly shaped supporting base having spaced ends connected to spaced longer sides;

at least one enclosed and refillable water reservoir tank removably mounted to said supporting base along one end and extending a predetermined distance along both spaced longer sides of said supporting base;

a housing mounted to said supporting base and being configured and dimensioned to fill the remainder of the supporting base which remains unoccupied by each said water reservoir tank;

at least one stationary wick element and a motor driven fan contained within said housing for directing air through said at least one wick element and for discharging air with increased humidity into the surrounding atmosphere, each said wick element also being removable from said housing for replacement or cleaning;

each said water reservoir tank having a predetermined width, depth and height dimension, said housing including each said wick element and said motor driven fan being located within the dimensional confines of planes extending through end surfaces at each end of the predetermined height and depth dimensions of each said water reservoir tank;

a catch basin of predetermined depth associated with said supporting base and including a channel portion for receiving water from said at least one water reservoir tank and for transporting water to said at least open wick element, said at least one wick element having its lower end positioned within the catch basin below the water for absorbing water up into the at least one wick element by capillary action;

means for providing predetermined constant humidification of air, said last mentioned means including means for maintaining a predetermined constant water depth in said catch basin for constant wetting of the lower end of said at least one wick element in order to permit air with increased humidity to be directed by said fan through said water absorbed at least one wick element for discharge into the surrounding atmosphere; and

said motor driven fan positioned relative to each said wick element for directing air with increased humidity through each said wick element for discharge from the humidifier into the surrounding atmosphere;

the relationship of each said wick element and motor driven fan to each said water reservoir tank providing a compact and efficient humidifier.

19. In a table top humidifier including a supporting base, the improvement comprising:

at least one water reservoir tank for receiving a supply of water and being mounted relative to said supporting base, a housing also mounted relative to said supporting base and including a wick element and motor driven fan for directing air through said wick element and for discharging air with increased humidity into the surrounding atmosphere, a one-piece injection molded motor frame having first quick interconnect locking means for assembly of said motor frame to said supporting section for supporting said motor and second quick interconnect locking means for assembly of a rotary switch and humidistat to said motor frame.

20. The improvement as defined in claim 22 wherein the first quick interconnect locking means includes an elongated slot formed in said supporting base with a generally centrally positioned interlocking slot therein, said motor frame including complementary configured spaced supporting feet for receipt within the elongated slot on opposite sides of said interlocking slot in order to support the motor frame relative to said supporting base, said motor frame further including a complementary interlocking element for interlocking within said interlocking slot in order to provide assembly of said motor frame to said supporting base.

21. The improvement defined in claim 20 wherein the second quick interconnect means for assembly of the rotary switch and humidistat includes a rotary switch and a humidistat housing each having a overlying flexible panel having integral fastener studs depending therefrom for engagement within complementary openings formed in said switch and humidistat.