CN101072629B - Single integrated humidity and ventilation control in an HVAC system - Google Patents
Single integrated humidity and ventilation control in an HVAC system Download PDFInfo
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- CN101072629B CN101072629B CN2005800025741A CN200580002574A CN101072629B CN 101072629 B CN101072629 B CN 101072629B CN 2005800025741 A CN2005800025741 A CN 2005800025741A CN 200580002574 A CN200580002574 A CN 200580002574A CN 101072629 B CN101072629 B CN 101072629B
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- relative humidity
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Abstract
HVAC systems are employed to control the indoor environmental characteristics of a building structure to make it comfortable for its inhabitants. An HVAC system includes one single integrated centralcontrol to regulate an indoor temperature level, an indoor relative humidity level and an indoor fresh air level of a building structure during both a heating season and a cooling season. Further, thesingle integrated central control is operable to selectively activate/deactivate an indoor blower to control a sensible ratio within a building structure. In addition, a protection feature for avoiding condensation on the interior surfaces of the building structure is included as an user selectable option.
Description
The application requires the U.S. Provisional Application No.60/537 of proposition on January 20th, 2004, and 528 priority all is incorporated into this paper with its disclosure by reference.
Technical field
The application relates to indoor central heating, ventilation and air conditioning (HVAC) system, wherein the control of indoor temperature, indoor relative humidity and indoor fresh air level is combined in the single integrated central control device, between heating season and cooling seasonal period, this device can be used to manage indoor environment.
Background technology
The HVAC system is used to control the indoor environmental characteristics of building structure so that the occupant feels comfortable.Typical HVAC system comprises temperature control equipment or thermostat and one or more humidity conditioner that is called as humidistat.
Thermostat is used as control device to regulate indoor temperature.The indoor temperature of thermostats sense reality also allows the user to import desired indoor temperature.Depart from when level expectation in indoor temperature, the thermostat operation is selected to make heating unit and/or air conditioner and related pressure fan starting thereof or is not worked and reaches the setting of user's expectation.
Except temperature control,, also usually be provided with the adjusting of the indoor relative humidity of building for comfortable indoor environment is provided.Relative humidity is defined as under the given temperature vapour quantity actual in the air and the ratio of maximum water-vapo(u)r capacity.Known to the increasing of temperature, the air containment that holds the steam of steam form also increases.On the contrary, along with the reduction of temperature, the air containment that holds steam reduces, and any excessive steam with surface that air contacts on condense into water.
Therefore, in month, cold outdoor air has relatively low moisture content in the winter time, yet the air of building structure inside is heated usually.The build guality that depends on specific building, some dry and cold infiltration of external air advance the warm interior space and subsequently by the indoor temperature that heats.This phenomenon has reduced indoor relative humidity effectively and has made room air become dry.
In order to solve this winter dryness or lower indoor relative humidity, usually with the part of humidifier as central heating system.Humidifier is brought steam in the air of heating into, has increased indoor relative humidity and is controlled by the second control device that is called as humidistat usually.The indoor relative humidity of humidistats sense reality also allows the user that desired indoor relative humidity level is set.When indoor relative humidity was lower than the level of expectation, humidistat started humidifier so that steam is added in the air.In case reach desired indoor relative humidity, humidistat just makes humidifier quit work.
On the contrary, in order to solve higher indoor relative humidity problem, usually use the device that is called as ventilation blower.In case indoor relative humidity has surpassed the level of expectation, so that controlled outside dry air amount is brought into indoor relative humidity is reduced thereby start ventilation blower.In addition, also bring controlled fresh air outside amount into and improve indoor air quality with ventilation blower.Ventilation blower is controlled by humidistat usually.Yet the humidistat of control ventilation blower generally separates with the humidistat of controlling humidifier in addition.
Though known single controller (as damp and hot adjuster) is advanced in temperature control and humidifier control combination, the combination of ventilation blower requires to increase by the second independent humidistat control usually. similarly, provide the control whole year to all indoor environmental characteristics of building structure to require the user to control the difference in functionality of identical HVAC system at least with two control device interfaces. this may make the user be puzzled. in addition, need may produce the result of conflict sometimes with the function that a plurality of control device are controlled identical HVAC system, therefore cause system to move being lower than under the optimality energy level.
Generally speaking, up to now, control indoor environmental characteristics (as: indoor temperature, indoor relative humidity and indoor fresh air level) requires to use a plurality of control device, and this is unfavorable.Therefore, expectation has the HVAC system that temperature, humidity and ventilation is integrated into single integrated central control device.
Summary of the invention
The invention discloses single integrated central control device.This single integrated central control device can obtain the environmental characteristics of various reality, as: indoor temperature, indoor relative humidity and outdoor temperature, these features are delivered to single integrated central control device by various sensors.
In a disclosed embodiment, single integrated central control device has input structure, import desired indoor environmental characteristics for the user, as: the desired indoor relative humidity of user and/or desired indoor fresh air level when the desired indoor relative humidity of user, cooling when the desired indoor temperature of user, heating when the desired indoor temperature of user, cooling during heating.Environment input and the desired input of user based on various reality, single integrated central control device provides heating and the air handling system comprehensive centralized Control of (comprising related pressure fan, humidifier, ventilation blower), to reach the desired indoor environmental characteristics of user.
At heating season, just, drop to the desired indoor temperature of user when following in outdoor temperature, the air in the building structure has the trend of desiccation, and promptly indoor relative humidity is lower.Under this environment, reach the desired indoor heating temperature of user except controlling actual indoor temperature, single integrated central control device is used for making on one's own initiative indoor air humidifying.Active humidification comprises the startup of balance humidifier and/or ventilation blower and stops.When the indoor relative humidity of reality is lower than the desired indoor relative heating humidity of user (this situation appears at heating season usually), start humidifier so that steam is added in the air, initiatively increase actual indoor relative humidity.On the contrary, when the indoor relative humidity of reality surpasses the desired indoor relative heating humidity of user, start ventilation blower with will feel nice and cool, dry, fresh outdoor air brings building structure inside into, reduces actual indoor relative humidity effectively.
In cooling season, just, when outdoor temperature surpassed the desired indoor temperature of user, the air in the building structure had and moisturizes or moistening trend, and promptly indoor relative humidity is higher.Under this environment, except controlling actual indoor temperature, single integrated central control device is used for making on one's own initiative indoor air dehumidification.Initiatively dehumidifying comprises that adjusting is by the temperature of the delivery air of air conditioner generation and the throughput that is generated by the pressure fan that is associated with air conditioner.When the indoor relative humidity of reality surpasses the desired indoor relative cooling humidity of user (this situation appear at usually cooling season), single integrated central control device is regulated the air-flow that the temperature of air conditioner reaches the degree that is lower than the desired indoor cooling temperature setting of user and reduces to be generated by the pressure fan that is associated with air conditioner.This has kept actual indoor temperature effectively and has approached the desired indoor cooling temperature of user and reduced actual indoor relative humidity simultaneously.On the contrary, when the indoor relative humidity of reality is lower than the desired indoor relative cooling humidity of user, start ventilation blower, increase the indoor relative humidity of reality effectively to bring warm, moist, fresh outdoor air into building structure inside.
In addition, at cooling in season, single integrated central control device is by optionally regulating pressure fan, sensible ratio (sensible ratio) (being balance cooling or sensible demand (sensible demand) and dehumidifying or latent heat demand (latent demand)) is regulated indoor air flow in the control room effectively. by regulating indoor air flow, air conditioner can be passed to the interior space with the sensible heat and the latent capacity of different proportion. therefore, still there is not latent heat demand (humidity is lower than desired humidity level) if having higher sensible demand (indoor temperature is difficult to keep), increase indoor air flow to increase the sensible ratio of the air-conditioning capacity that is transmitted. on the contrary, but when existing cooling requirement humidity to be higher than desired humidity level hardly, reduce indoor air flow to reduce sensible ratio.
In another disclosed embodiment, as propose on December 17th, 2004, sequence number is No.11/016,373, title is disclosed in the U.S. Patent application that transfer the possession of, pending trial simultaneously " Determination of Maximum AllowableHumidity in Indoor Space to Avoid Condensation Inside BuildingEnvelope ", general, single integrated central control device comprises the protecting component (optional by the user) that is used to avoid the inner surperficial condensation vapor of building, and its disclosure is incorporated into this paper by reference and all.This option provides the automatic adjusting of desired indoor relative humidity based on the indoor and outdoors feature of reality, to avoid inner lip-deep the condensing of building.
In this embodiment, user's input is the at user option heating humidity level by building owner or actual occupant input.The occupant selects the heating humidity level from the preset range of 1-9, the default value of this scope such as is 5 near the centre.Selected heating humidity level is used for determining dull joint coefficient (A subsequently
*).In this embodiment, the central control device heating humidity level of using the conversion table be stored in the memory that the user is selected is converted to dull joint coefficient (A
*).Dull joint coefficient (A
*) then be used for allowing indoor relative humidity based on the heating humidity level calculating maximum that the user selects.
Occupant's humidity level that will heat usually is set to and just is lower than the degree that allowing condenses takes place.This point is finished by iterative process.Till the occupant optionally increases heating humidity level takes place in condensing in the building shell.Occupant's humidity level that then optionally will heat is reduced to degree when just being lower than condenses takes place.In case the occupant has selected to prevent to condense desired indoor relative humidity, central control device can be used to keep actual indoor relative humidity based on the indoor relative humidity level that the user selects, and regulates actual indoor relative humidity continuously and prevents from simultaneously to condense with the environmental aspect that variation is provided.
In another disclosed embodiment of the present invention, the setter of HVAC system just is input into user's input after installation.The user imports the degree of thermal insulation of having represented building structure feature and ordinary representation building shell.User's input can be set based on the experience about former similar quality dwelling house of setter.In this embodiment, centralized Control uses conversion table subsequently architectural feature to be converted to aforesaid dull joint coefficient (A
*).Dull joint coefficient (A
*) then be used to calculate maximum based on the degree of thermal insulation of building and allow indoor relative humidity.In case the person of being mounted is provided with, the HVAC system just can be used to keep actual indoor relative humidity level, prevents to condense thereby constantly regulate with the environmental aspect that variation is provided.
According to following explanation and accompanying drawing these and other features that the present invention may be better understood, be below to brief description of drawings.
Description of drawings
Fig. 1 is the schematic diagram of building HVAC system.
Fig. 2 is the detailed maps that comprises the building HVAC system of the comprehensive central control device that is used to control furnace, air conditioner, humidifier and ventilation blower and pressure fan.
Fig. 3 is the detail drawing of indoor relative humidity input example.
Fig. 4 is the curve map of active humidification in the heating mode of the comprehensive central control device of explanation.
Fig. 5 is the curve map of the active dehumidifying in the cooling pattern of the comprehensive central control device of explanation.
Fig. 6 is the example of conversion table.
Fig. 7 is the example of allowing humidometer.
Fig. 8 is the curve map of the fresh air control of the comprehensive central control device of explanation.
The specific embodiment
Fig. 1 explanation be the schematic diagram of building HVAC system 10. single integrated central control device 12 can be based on by the actual environment characteristic E of at least one environmental sensor 14 sensing with import U by the user that the user is input to user interface 16 and control a plurality of indoor environmental characteristics. single integrated central control device 12 starts and/or stops to control indoor environmental characteristics by optionally making at least one device 18.
What Fig. 2 illustrated is the detailed maps that includes the building HVAC system 10 of single integrated central control device 12.Single integrated central control device 12 receives the actual environment input from a plurality of sensors.Indoor temperature transmitter 20, indoor relative humidity sensor 22 and outdoor temperature sensor 24 can be used to the indoor temperature input (T with reality
I), indoor relative humidity input (H
I) and actual outdoor temperature (T
O) transfer to single integrated central control device 12.User interface 16 can be used to receive user's input.The user import its desired indoor temperature level 26 and its desired indoor relative humidity level 28 with and desired fresh air level 30, the desired indoor temperature level 26 of described user comprises indoor heating temperature level and the desired indoor cooling temperature level of user that the user is desired, and the desired indoor relative humidity level 28 of described user comprises heating humidity level 28A (Fig. 3) and the desired cooling humidity level 28B (Fig. 3) of user that the user is desired.
Based on actual indoor temperature (T by indoor temperature transmitter 20 sensings
I) and by the actual outdoor temperature (T of outdoor temperature sensor 24 sensings
O) comparison, single integrated central control device 12 is worked under heating mode or cooling pattern.The user is input into the indoor temperature level 26 of user's expectation, the indoor relative heating humidity level 28A of user's expectation and the indoor relative cooling humidity level 28B of user's expectation.At actual indoor temperature (T
I) less than actual outdoor temperature (T
O) time, single integrated central control device 12 will be worked under heating mode.On the contrary, at actual indoor temperature (T
I) greater than actual outdoor temperature (T
O) time, single integrated central control device 12 will be worked under the cooling pattern.
Under heating mode (being also referred to as the active humidification pattern), when needs reached the indoor heating temperature level of user's expectation, single integrated central control device 12 can be used to regulate the furnace 18A that comprises related pressure fan 32.When needs reach the indoor fresh air level 30 of the heating indoor relative humidity level 28B of user expectation and user's expectation, also regulate humidifier 18C and ventilation blower 18D.
Single integrated central control device 12 receives the indoor temperature transmitter 20 from reality, the indoor relative humidity sensor 22 of reality and user's input.User's input comprises indoor heating temperature level, the indoor heating relative humidity level 28A of user's expectation and the indoor fresh air level 30 of user's expectation that the user expects.The relatively actual indoor relative humidity (H of single integrated central control device 12
I) and the indoor heating humidity level 28A of user expectation.If actual indoor relative humidity (H
I) being lower than the indoor relative heating humidity level 28A (this situation appears at heating season usually) that the user expects, single integrated central control device 12 optionally starts humidifier 18C with the indoor relative humidity (H with reality
I) increase to value near the indoor relative heating humidity level 28A of user expectation.If actual indoor relative humidity (H
I) surpass the indoor relative heating humidity level 28A of user's expectation, single integrated central control device 12 optionally start ventilation blower 18D with will feel nice and cool, dry, fresh outdoor air brings building structure into, effectively with the indoor relative humidity (H of reality
I) reduce to value near the indoor relative heating humidity level 28A of user expectation.
Shown in Fig. 4 is the curve map of the active humidification of heating mode.
Under cooling pattern (being also referred to as initiatively dehumidification mode), when needs reached the indoor fresh air level 30 of the indoor cooling humidity level 28B of the indoor cooling temperature level of user expectation and user's expectation and user's expectation, single integrated central control device 12 can be used to regulate air conditioner 18B, humidifier 18C and the ventilation blower 18C. that comprises related pressure fan 32
Single integrated central control device 12 receives the indoor temperature transmitter 20 from reality, the indoor relative humidity sensor 22 of reality and user's input.User's input comprises indoor cooling temperature, the indoor cooling humidity level 28B of user's expectation and the indoor fresh air level of user's expectation that the user expects.The relatively actual indoor relative humidity (H of single integrated central control device 12
I) and the indoor cooling humidity level 28B of user expectation.Actual indoor relative humidity (H
I) can surpass the indoor relative cooling humidity level 28B that the user expects; This situation appears at cooling season usually.The adjustment of the delivery air that single integrated central control device 12 then optionally will be produced by air conditioner 18B is to the indoor cooling temperature that is lower than user's expectation and reduce the air-flow that the pressure fan by association generates.This will reduce actual indoor relative humidity (H
I) to value near the indoor relative cooling humidity level 28B of user expectation.If actual indoor relative humidity (H
I) being lower than the indoor relative cooling humidity level 28B that the user expects, then single integrated central control device 12 optionally starts ventilation blower 18D to bring warm, moist, fresh outdoor air into building structure.This is effectively with the indoor relative humidity (H of reality
I) increase to value near the indoor relative cooling humidity level 28B of user expectation.
In addition, when working under the cooling pattern, single integrated central control device 12 can be used to regulate the air-flow of pressure fan 32 with balance cooling (sensible heat) demand and dehumidifying (latent heat) demand.But when higher sensible demand (indoor temperature of user's expectation is difficult to keep) being arranged do not have latent heat demand (actual indoor relative humidity is lower than the indoor relative humidity of user's expectation), single integrated central control device 12 is regulated pressure fan 32 to increase the sensible ratio of the air-conditioning capacity that is transmitted.On the contrary, there is cooling requirement (actual indoor temperature be in or a shade below the indoor temperature of user's expectation) hardly when but actual indoor relative humidity is higher than the indoor relative humidity of user's expectation, regulating pressure fan to reduce sensible ratio.
Shown in Fig. 5 is the curve map of the active dehumidifying of cooling pattern.
Therefore, when single integrated central control device 12 works in heating mode, calculate all environment control based on the indoor heating temperature of user's expectation and the indoor relative heating humidity level 28A of user's expectation.On the contrary, when single integrated central control device 12 works in the cooling pattern, calculate all environment controls based on the indoor cooling temperature of user's expectation and the indoor relative cooling humidity level 28B of user's expectation.Similarly, single integrated central control device 12 can be used to be controlled at the needed whole devices 18 of indoor environment situation that reach user's expectation between heating season and cooling seasonal period.
Fig. 3 illustrates the exemplary screen of a user interface 16, and wherein the user is input into the relative humidity input 28 of user's expectation.The user is input into user interface 16 (Fig. 2) with desired heating indoor relative humidity level 28A and desired cooling indoor relative humidity level 28B.User interface 16 then transfers to single integrated central control device 12 with user's input.Certainly, this is a routine screen of user interface 16.Different screens can be imported the input of other types for the user, for example the fresh air level of the indoor cooling temperature of the indoor heating temperature level of user's expectation, user's expectation and user's expectation.
Also comprise and be used to avoid the protecting component (user's option) that condenses on the inner surface of building.This feature proposed on December 17th, 2004, sequence number is No.11/016,373, title is for being disclosed in the U.S. Patent application that transfer the possession of, pending trial simultaneously " Determination of Maximum Allowable Humidity in Indoor Space toAvoid Condensation Inside Building Envelope ", general, and its disclosure is incorporated into this paper by reference and all.In this option, single integrated central control device 12 allows that based on indoor and outdoors feature calculation maximum indoor relative humidity prevents to condense, thereby and regulates actual indoor relative humidity and prevent to condense.
In this embodiment, single integrated central control device 12 uses the conversion table (CT) as Fig. 6 explanation to be adjustment factor A by the information translation of owner or system's setter input user interface 16
*After conversion, single integrated central control device 12 then calculates effective Δ T based on following formula:
ΔT＝A*(t
2-t
1)
After having calculated effective Δ T, single integrated central control device 12 uses as Fig. 7 illustrates allows that humidometer (AHT) determines that maximum allows indoor relative humidity.Certainly, more this table determines that the additive method of reference value belongs in the scope of the present invention.Utilizing the user to import with the environment input determines to belong to scope of the present invention with any method of the reference value of showing contrast.
After definite maximum is allowed indoor relative humidity, single integrated central control device 12 can be used to optionally to make indoor set to start/stop regulating actual indoor relative humidity to allowing the value of indoor relative humidity less than the maximum of being calculated, thereby prevents to condense.
When this option is activated, under colder outdoor temperature, when needs reach desired maximum and allow the indoor relative humidity level, single integrated central control device 12 increase to from the suction of the fresh air of ventilation blower to reduce actual indoor relative humidity.Single integrated central control device 12 can be used to bring into fresh air reaching the fresh air level of user's expectation, but limits or the air that stops under extreme (very hot or very cold) outdoor environment situation sucks, and makes the minimum that influences to the indoor environment situation.Shown in Fig. 8 is the curve map of fresh air control section that utilizes the single integrated central control device 12 of humidifier 18C and ventilation blower 18D.
Although disclose the preferred embodiments of the present invention, ordinary skill workman will recognize that their some modification will fall within the scope of the invention.For this reason, following claim should be studied carefully to determine true scope of the present invention and content.
Claims (21)
1. single integrated control device that is used for the HVAC system comprises:
Central control device, wherein said central control device can be used to control between heating season and cooling seasonal period actual indoor temperature, actual indoor relative humidity and actual indoor fresh air level, and the described central control device indoor relative humidity level that is used in described reality changes the indoor relative humidity level of described reality when being lower than expectation.
2. single integrated control device as claimed in claim 1, also comprise indoor temperature transmitter, indoor relative humidity sensor and outdoor temperature sensor, wherein said central control device can be used to receive the input from described indoor temperature transmitter, described indoor relative humidity sensor and described outdoor temperature sensor.
3. single integrated control device as claimed in claim 2, the user interface that also comprises user-operable, be used for importing the indoor temperature of at least one user's expectation, the indoor fresh air level of the indoor relative humidity of at least one user's expectation and user's expectation, wherein said central control device generates signal to control the indoor temperature of described reality based on described input, the indoor fresh air level of the indoor relative humidity of described reality and described reality, thus reach the indoor temperature that described at least one user expects, the indoor fresh air level of the indoor relative humidity of described at least one user's expectation and described user expectation.
4. single integrated control device as claimed in claim 3, wherein said central control device is worked under heating mode and cooling pattern.
5. single integrated control device as claimed in claim 4, wherein: when described central control device is worked under described heating mode, the indoor temperature of described at least one user's expectation comprises the indoor heating temperature that the user expects, and the indoor relative humidity of described at least one user's expectation comprises the indoor relative heating humidity that the user expects.
6. single integrated control device as claimed in claim 5, wherein: when the indoor relative humidity of described reality was higher than the indoor relative heating humidity of described user's expectation, the indoor fresh air level of described reality was increased.
7. single integrated control device as claimed in claim 5, wherein: when the indoor relative humidity of described reality was lower than the indoor relative heating humidity of described user's expectation, the indoor fresh air level of described reality was lowered.
8. single integrated control device as claimed in claim 4, wherein: under described cooling pattern, work at described central control device, the indoor temperature of described at least one user's expectation comprises the indoor cooling temperature that the user expects, and the indoor relative humidity of described at least one user's expectation comprises the indoor relative cooling humidity that the user expects.
9. single integrated control device as claimed in claim 8, wherein: when the indoor relative humidity of described reality was lower than the indoor relative cooling humidity of described user's expectation, the indoor relative humidity of described reality was increased.
10. single integrated control device as claimed in claim 8, wherein: when the indoor relative humidity of described reality was higher than described cooling indoor relative humidity, the indoor relative humidity of described reality was lowered.
11. single integrated control device as claimed in claim 3, wherein: described central control device is controlled the indoor relative humidity of the indoor temperature of described reality, described reality and the indoor fresh air level of described reality by at least one device that optionally starts and stop the HVAC system.
12. single integrated control device as claimed in claim 2, also comprise: be used to import the user interface of user's input and wherein said central control device and receive at least one environment input from sensor, calculate effective Δ value based on described user's input and described at least one environment input, determine that based on described effective Δ value maximum allows indoor relative humidity, and the indoor relative humidity of regulating described reality is to the value of allowing indoor relative humidity less than described maximum.
13. single integrated control device as claimed in claim 12, wherein said user imports and represents the building structure feature.
14. single integrated control device as claimed in claim 12, wherein said user's input is at user option humidity.
15. a HVAC system comprises:
Single integrated central control device;
Temperature control equipment;
Humidity conditioner;
Fan unit; And
Ventilating device, wherein: described single integrated central control device can be used to control described temperature control equipment, described humidity conditioner, described fan unit and described ventilating device to reach the value of setting of user's expectation season at heating season and cooling, wherein, described single integrated central control device is controlled the indoor humidity level of described humidity conditioner approaching expectation to change actual indoor humidity level.
16. HVAC as claimed in claim 15 system, wherein said pressure fan is optionally started and is stopped with the control sensible ratio.
17. a method of controlling the HVAC system comprises:
The indoor environment feature of at least one user's expectation is input into single integrated central control device;
Measure at least one actual environment feature;
Described at least one actual environment feature is transferred to described single integrated central control device; And
Based on environmental characteristic and described at least one actual environment feature at least one actual indoor environment feature of centralized Control between heating season and cooling seasonal period of described at least one user's expectation, wherein controlled at least one actual indoor environment feature comprises actual indoor relative humidity at least.
18. method as claimed in claim 17 comprises the steps: that also indoor relative humidity in reality is higher than the occasion that desired indoor relative humidity and outdoor temperature are lower than predetermined temperature, increases actual indoor fresh air level.
19. method as claimed in claim 17 comprises the steps: that also indoor relative humidity in reality is lower than the occasion that desired indoor relative humidity and outdoor temperature are lower than predetermined temperature, reduces actual indoor fresh air level.
20. method as claimed in claim 17 comprises the following steps: that also indoor relative humidity in reality is lower than the occasion that desired indoor relative humidity and outdoor temperature surpass predetermined temperature, increases actual indoor fresh air level.
21. method as claimed in claim 17 comprises the following steps: that also indoor relative humidity in reality is higher than the occasion that desired indoor relative humidity and outdoor temperature surpass predetermined temperature, reduces actual indoor fresh air level.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53752804P | 2004-01-20 | 2004-01-20 | |
| US60/537,528 | 2004-01-20 | ||
| PCT/US2005/002021 WO2005072269A2 (en) | 2004-01-20 | 2005-01-20 | Single integrated humidity and ventilation control in an hvac system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101072629A CN101072629A (en) | 2007-11-14 |
| CN101072629B true CN101072629B (en) | 2010-05-05 |
Family
ID=38899438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800025741A Expired - Fee Related CN101072629B (en) | 2004-01-20 | 2005-01-20 | Single integrated humidity and ventilation control in an HVAC system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101072629B (en) |
| HK (1) | HK1115087A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2517853B (en) * | 2012-05-17 | 2017-02-15 | Lena Hun Man Chan | Information control system |
| DE102013101684A1 (en) * | 2013-02-20 | 2014-08-21 | Oventrop Gmbh & Co. Kg | Device for influencing the room climate |
| US11181875B2 (en) | 2016-01-22 | 2021-11-23 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for monitoring and controlling a central plant |
| CN106895560A (en) * | 2017-02-28 | 2017-06-27 | 广州华凌制冷设备有限公司 | A kind of air-conditioning system indoor gas quality adjustment method, air-conditioning system |
| CN109764495B (en) * | 2019-03-08 | 2021-05-28 | 广东美的制冷设备有限公司 | Air conditioner, method of controlling the same, and computer-readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414818A (en) * | 1981-03-05 | 1983-11-15 | Borg-Warner Ltd. | Environmental control system |
| US4517810A (en) * | 1983-12-16 | 1985-05-21 | Borg-Warner Limited | Environmental control system |
| US5348077A (en) * | 1991-03-29 | 1994-09-20 | Hillman Chris F | Integrated air exchanger |
| CN1100795A (en) * | 1993-09-25 | 1995-03-29 | 北京市西城区新开通用试验厂 | Numerically controlled ventilation and dihumidification equipment for underground facility |
-
2005
- 2005-01-20 CN CN2005800025741A patent/CN101072629B/en not_active Expired - Fee Related
-
2008
- 2008-05-05 HK HK08104978.0A patent/HK1115087A1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414818A (en) * | 1981-03-05 | 1983-11-15 | Borg-Warner Ltd. | Environmental control system |
| US4517810A (en) * | 1983-12-16 | 1985-05-21 | Borg-Warner Limited | Environmental control system |
| US5348077A (en) * | 1991-03-29 | 1994-09-20 | Hillman Chris F | Integrated air exchanger |
| CN1100795A (en) * | 1993-09-25 | 1995-03-29 | 北京市西城区新开通用试验厂 | Numerically controlled ventilation and dihumidification equipment for underground facility |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101072629A (en) | 2007-11-14 |
| HK1115087A1 (en) | 2008-11-21 |
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