CN101858639A - Airflow economizer and method of operating thereof - Google Patents
Airflow economizer and method of operating thereof Download PDFInfo
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- CN101858639A CN101858639A CN201010180760A CN201010180760A CN101858639A CN 101858639 A CN101858639 A CN 101858639A CN 201010180760 A CN201010180760 A CN 201010180760A CN 201010180760 A CN201010180760 A CN 201010180760A CN 101858639 A CN101858639 A CN 101858639A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/04—Air-mixing units
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- Combustion & Propulsion (AREA)
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Abstract
The invention provides a kind of airflow economizer and method of operating thereof, this economizer has the casing of band external airflow section and internal airflow section.External airflow section comprises one or more external flow blades that are installed in the outer gas stream path.External flow blades is selectively at open position with roughly rotate between the closed position.Internal airflow section comprises one or more internal flow blades that are installed in the internal gas flow path.The internal flow blade is selectively at open position with roughly rotate between the closed position.Each internal flow blade comprises guide portion.When the internal flow blade is shown in an open position, the guide portion of each internal flow blade and internal gas flow path almost parallel.External flow blades and internal flow blade link together, make when the internal flow blade is shown in an open position, external flow blades is in roughly closed position, and when the internal flow blade was in roughly the closed position, external flow blades was shown in an open position.
Description
Technical field
The present invention relates in general to air-flow heating and cooling system, relates in particular to the air-flow heating and cooling system of the economizer that use can mix circulating air and extraneous air.
Background technology
Many modern buildings utilize the heating and cooling system to regulate interior environmental conditions, as temperature, humidity and oxygen content.Environmental condition can/extraneous air outer by circular chamber and the mixing air of indoor/inner air regulate.For example, when outdoor air is more nice and cool than the air of interior of building circulation, the inner space that can use outdoor air cooling building.Can save the energy consumption relevant like this with the air of hot-air in the conditioning chamber.
Typically, the heating and cooling system comes outside the conditioning chamber and the mixing air of room air in conjunction with economizer, to reduce energy consumption.As be well known in the art, economizer is a kind of mechanical device that is connected to a plurality of pipelines in the heating and cooling system, is used for regulating circulation and enters the interior outdoor air of building and the mixing air of room air (being sometimes referred to as " circulating air ").For example, the environment temperature in building is higher than capping, and extraneous air is when enough nice and cool, economizer just can the mixing air in circulation enters building in the increase cool exterior air percentage and reduce the percentage of indoor hot-air.Otherwise the environment temperature in building is lower than to be set down in limited time, and economizer reduces the percentage of cool exterior air in can the mixing air in circulation enters building and increases the percentage of indoor hot-air.
Therefore the efficient of economizer and heating and cooling system is relevant with the internal flow characteristics of economizer.For example, big more by the pressure drop of economizer, the efficient of economizer and heating and cooling system is low more.
Summary of the invention
According to an aspect of the present invention, provide a kind of economizer, it has the casing of band external airflow section and internal airflow section.External airflow section comprises one or more external flow blades that are installed in the outer gas stream path.External flow blades is selectively at open position with roughly rotate between the closed position.Internal airflow section comprises one or more internal flow blades that are installed in the internal gas flow path.The internal flow blade is selectively at open position with roughly rotate between the closed position.Each internal flow blade comprises guide portion.When the internal flow blade places open position, the guide portion of each internal flow blade and internal gas flow path almost parallel.External flow blades and internal flow blade link together, and make that when the internal flow blade was shown in an open position, external flow blades was in roughly closed position, and when the internal flow blade was in roughly the closed position, external flow blades was positioned at open position.
According to a further aspect in the invention, provide a kind of method of operating economizer.The method comprising the steps of: casing a) is provided, this casing has external airflow section and internal airflow section, this external airflow section has one or more external flow blades that are rotatably installed in the outer gas stream path, this external flow blades can be operable to and be in the roughly closed position that the open position opened in the outer gas stream path and outer gas stream path are roughly closed, this internal airflow section has one or more internal flow blades that are rotatably installed in the internal gas flow path, this internal flow blade can be operable to and be in the roughly closed position that the open position opened in the internal gas flow path and internal gas flow path are roughly closed, wherein, each internal flow blade comprises guide portion, at internal flow blade open position, the guide portion of each internal flow blade and internal gas flow path almost parallel; B) open position and roughly between the closed position rotation one or more external flow blades gears change so that pass the amount of the outdoor airflow in outer gas stream path; C) rotate one or more internal flow blade gears pro rata with the external flow blades gear, thereby, change so that pass the amount of the indoor air flow in internal gas flow path roughly rotating the internal flow blade gear between closed position and the open position.The amount inversely related of the amount of outdoor airflow and indoor air flow.
Description of drawings
Fig. 1 is the schematic diagram of economizer first constructed embodiment.
Fig. 2 is the economizer second structure schematic diagram.
Fig. 3 is economizer the 3rd a structure schematic diagram.
The specific embodiment
Fig. 1 and 3 embodiment schematic diagram for the economizer 100 that is used to regulate mixed airflow.Economizer 100 comprises casing 8, and this casing has external airflow section 10 and internal airflow section 12, and jockey.External airflow section comprises one or more external flow blades 14, and internal airflow section comprises one or more internal flow blades 16.In certain embodiments, economizer 100 further comprises one or more exhaust dampers 60.
Each external flow blades 14 has the length of extending between first end 28 and second end 30, wherein this length of blade has surf zone, and the end 28,30 of blade has surf zone.Each external flow blades 14 further comprises guide portion 31 and follower 33.
Each internal flow blade 16 has the length of extending between first end 46 and second end 48, wherein, this length of blade has surf zone, and the end 46,48 of blade has surf zone.Each internal flow blade 16 further comprises guide portion 49 and follower 51.
Jockey links together external flow blades 14 and internal flow blade 16, and makes external flow blades 14 and internal flow blade 16 synchronized movement.For example, in Fig. 1-3 illustrated embodiment, jockey comprises one or more external flow blades gears 50, one or more internal flow blade gears 52, one or more connection gears 54, and one or more idler gear 56.Gear in the jockey is set to, but is not limited to, roller gear or helical gear.Each external flow blades gear 50 is set to and one or more adjacent external flow blades gear 50 engagements." engagement " is used for describing the gear interphase interaction that makes that a meshing gear promotes and rotates adjacent meshing gear.Connect gear 54 be set to its external flow blades gear 50 in one and internal flow blade gear 52 in one be meshed.Each idler gear 56 is set to be meshed with two internal flow blade gears 52, and wherein adjacent inner flow blades gear 52 does not mesh together.The feasible connection of the size design gear 54 of external flow blades gear 50, internal flow blade gear 52, connection gear 54 and idler gear 56 connects inside and outside flow blades gear 52 with 2: 1 gearratio, but is not limited to this.That is, each external flow blades gear 50 every rotation twice, 52 rotations of each internal flow blade gear were once.For example, each external flow blades gear 50 has diameter dimension, each internal flow blade gear 52 has the diameter dimension that equals external flow blades gear 50 diameter twices, connects gear 54 and each idler gear 56 and has the diameter dimension that equals external flow blades gear 50 diameters.Jockey is configured such that further internal flow blade gear 50 is synchronous, makes each internal flow blade gear 52 all rotate (being clockwise or counterclockwise mode) in the same manner.That is, when rotating in clockwise manner for one in the center tooth wheel 56, two internal flow blade gears 52 that are engaged rotate in counterclockwise mode.Should be noted in the discussion above that previous example only is an embodiment of jockey, the invention is not restricted to this specific embodiments.For example, in certain embodiments, jockey can use pulley/lever and band/rope system to replace gear train or replenishing as gear train.Further, depend on the design needs, idler gear 56 can partly or entirely omit.In an alternate embodiment, jockey can comprise a plurality of actuator (not shown) with connect external flow blades 14 and internal flow blade 16 and make external flow blades 14 and internal flow blade 16 synchronous.For example, in one embodiment, actuator can be set to communicate by letter with the processor (not shown), makes that can operate each actuator according to the synchronization command signal of from processor makes a rotation in the external flow blades 14 one or the internal flow blade 16.
The external airflow section 10 of casing 8 and internal airflow section 12 are set to be limited to the dividing plate 58 that extends to small part between the two.Dividing plate 58 separates outer gas stream path 18 in the external airflow section 10 and internal gas flow path 32 and air-flow discharge path 38 in the internal airflow section 12 aspect fluid, and vice versa.
Jockey is set to connect inside and outside flow blades 14,16, makes one rotatablely move cause rotatablely moving of another.For example, connecting gear 54 and idler gear 56 is rotatably installed on the outside and internal airflow section 10,12 of casing 8.As previously mentioned, the gears engaged in the jockey makes when a gear rotates that together each gear in the jockey is according to estimated rate (as 2: 1) and mode (as clockwise or counterclockwise) rotation.Jockey further be set to make outside and internal flow blade gear 50,52 synchronous, feasible when internal flow blade 16 is in a fully open position, external flow blades 14 is in the closed position.Further, idler gear 56 is set to make 52 alignment of internal flow blade gear, makes each internal flow blade 16 all have similar spatial orientation.That is, internal flow blade gear 52 is aligned to and makes each internal flow blade 16 with respect to angle, 32 one-tenth in internal gas flow path " θ " (referring to Fig. 3).
Referring to Fig. 3, in the operating process of economizer 100, outside and internal flow blade 14,16 selectively rotates, the amount of passing the outdoor airflow 62 (acyclic) in outer gas stream path 18 and passing the indoor air flow 64 (circulation) in internal gas flow path 32 with reverse adjusting.That is, when external flow blades 14 allowed the outdoor airflow 62 of high relatively percentage to pass outer gas stream path 18, internal flow blade 16 allowed the indoor air flow 62 of low relatively percentage to pass internal gas flow path 32.
For example, in structure shown in Figure 1,, roughly do not have outdoor airflow 62 to pass outer gas stream path 18 and enter in the building because external flow blades 14 is in the closed position.On the contrary, because internal flow blade 16 is in a fully open position, roughly all indoor air flows 64 pass internal gas flow path 32 and loop back in the building.In structure shown in Figure 2, when external flow blades 14 was in a fully open position, the outdoor airflow 62 of maximum was passed outer gas stream path 18 and is entered building.Simultaneously, because internal flow blade 16 is in the closed position, roughly there is not indoor air flow 64 to pass internal gas flow path 32.In this structure, indoor air flow 64 can be along the air-flow discharge path 38 that passes internal airflow section 12, the outside of exhaust damper 60 of flowing, thus leave building.In structure shown in Figure 3, external flow blades 14 is in the part closed position, and the maximum outdoor airflow 62 of certain percentage is passed outer gas stream path 18 and entered.Simultaneously, when internal flow blade 16 was in a partly opened position, the maximum indoor circulation air-flow 64 of certain percentage passed internal gas flow path 32.In this structure, the indoor air flow that does not pass internal gas flow path 32 64 of certain percentage can pass exhaust damper 60 and discharge.
The efficient that should be noted in the discussion above that economizer 100 and heating and cooling system partly be in the external airflow section 10 airflow inlet 20 and export pressure drop between 22 and internal airflow section 12 in airflow inlet 34 and export the function of pressure drop between 36.The pressure drop part of passing outside and internal airflow section 10,12 is relevant with layout, and is therefore relevant with the surf zone of each blade that directly is exposed to outdoor or indoor air flow.For example, internal flow blade 16 causes relatively little pressure drop in the fully open position, at least the guide portion 49 of blade 16 is parallel with internal gas flow path 32 in this fully open position, makes internal gas flow 64 only clash into the end edge surface of each blade 16 when passing internal gas flow path 32.On the contrary, the economizer of some prior aries stands relatively large pressure drop in the fully open position that blade is positioned to acutangulate with air flow path (as angle at 45).In the orientation of 45 degree (45 °), flowing impinges upon on sizable zone of blade, has produced undesirable pressure drop.
Although disclosed different embodiments of the invention, to those skilled in the art, obviously there are more embodiment and embodiment within the scope of the invention.Therefore, unless according to claims and their equivalent, the present invention should not be limited.
Claims (16)
1. economizer comprises:
Casing, it has external airflow section and internal airflow section, this external airflow section comprises one or more external flow blades that are installed in the outer gas stream path, this external flow blades is selectively at open position with roughly rotate between the closed position, this internal airflow section comprises one or more internal flow blades that are installed in the internal gas flow path, this internal flow blade is selectively at open position with roughly rotate between the closed position, and wherein, each internal flow blade comprises guide portion;
Wherein, when the internal flow blade places open position, the guide portion of each internal flow blade and internal gas flow path almost parallel; And
Wherein, external flow blades and internal flow blade link together, and make that external flow blades is in roughly closed position when the internal flow blade is shown in an open position, and when the internal flow blade was in roughly the closed position, external flow blades was shown in an open position.
2. economizer according to claim 1 further comprises jockey, and this jockey is connected external flow blades pro rata with the internal flow blade, makes the every rotation of internal flow blade once, and each rotation of external flow blades twice.
3. economizer according to claim 2, wherein, external flow blades can be at open position and is roughly rotated about 90 degree between the closed position, and the internal flow blade can be at open position and is roughly rotated about 45 between the closed position and spend.
4. economizer according to claim 2, wherein, jockey comprises that at least one connects gear, at least one external flow blades gear and at least one internal flow blade gear, wherein, each flows outside gear is all attached on one in the external flow blades, each internal flow blade gear connects gear and is meshed with external flow blades and internal flow blade gear all attached on one in the internal flow blade.
5. economizer according to claim 4, wherein, external airflow section has a plurality of external flow blades, and each external flow blades is attached on the external flow blades gear, internal airflow section has a plurality of internal flow blades, and each internal flow blade is attached on the internal flow blade gear.
6. economizer according to claim 5, wherein, jockey comprises that further at least one connects the idler gear of internal flow blade gear.
7. economizer according to claim 6, wherein, extend between first airflow inlet and first air stream outlet in the outer gas stream path, and internal flow path is extended between second airflow inlet and second air stream outlet.
8. economizer according to claim 7, wherein, when the internal flow blade is shown in an open position, the internal flow blade and the second airflow inlet approximate vertical.
9. economizer according to claim 2, wherein, jockey comprises a plurality of and actuator processor communication, and one in each actuator and the external flow blades one or the internal flow blade links, and blade is rotated between the opening and closing position.
10. economizer according to claim 2, wherein, internal airflow section comprises that further at least one can be pivoted on the exhaust damper in the air-flow discharge path, this air door can be operated to open or close the air-flow discharge path.
11. economizer according to claim 10, wherein, the air-flow discharge path extends to the air-flow outlet from second airflow inlet.
12. economizer according to claim 2, wherein, external airflow section is set to regulate outdoor airflow, and internal airflow section is set to regulate indoor air flow.
13. a method of operating economizer comprises the steps:
Casing is provided, this casing has external airflow section and internal airflow section, this external airflow section has one or more external flow blades that are rotatably installed in the outer gas stream path, this external flow blades can be operable to and be in the roughly closed position that the open position opened in the outer gas stream path and outer gas stream path are roughly closed, this internal airflow section has one or more internal flow blades that are rotatably installed in the internal gas flow path, this internal flow blade can be operable to and be in the roughly closed position that the open position opened in the internal gas flow path and internal gas flow path are roughly closed, wherein, each internal flow blade comprises a guide portion, at internal flow blade open position, the guide portion of each internal flow blade and internal gas flow path almost parallel;
Open position and roughly between the closed position rotation one or more external flow blades gears change so that pass the amount of the outdoor airflow in outer gas stream path;
Rotate one or more internal flow blade gears pro rata with the external flow blades gear, roughly rotating the internal flow blade gear between closed position and the open position, change thus so that pass the amount of the indoor air flow in internal gas flow path;
Wherein, the amount inversely related of the amount of outdoor airflow and indoor air flow.
14. method according to claim 13 further comprises the step that external flow blades is connected to the jockey of internal flow blade is provided.
15. method according to claim 14, wherein, the every rotation of internal flow blade once, external flow blades is rotated twice.
16. method according to claim 15, wherein, internal airflow section comprises that further at least one can be pivoted on the air door in the air-flow discharge path, and this air door can be operated to open or close the air-flow discharge path.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16738409P | 2009-04-07 | 2009-04-07 | |
| US61/167384 | 2009-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101858639A true CN101858639A (en) | 2010-10-13 |
Family
ID=42826592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010180760A Pending CN101858639A (en) | 2009-04-07 | 2010-04-07 | Airflow economizer and method of operating thereof |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20100255768A1 (en) |
| CN (1) | CN101858639A (en) |
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- 2010-04-07 CN CN201010180760A patent/CN101858639A/en active Pending
- 2010-04-07 US US12/755,865 patent/US20100255768A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2431659A (en) * | 1942-02-04 | 1947-11-25 | William Steell Jackson And Son | Fuel economizer |
| US4404815A (en) * | 1981-11-23 | 1983-09-20 | Carrier Corporation | Air conditioning economizer control method and apparatus |
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| JP2009023592A (en) * | 2007-07-23 | 2009-02-05 | Denso Corp | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100255768A1 (en) | 2010-10-07 |
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