CN105387554A - Air exchange device and air exchange method - Google Patents
Air exchange device and air exchange method Download PDFInfo
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- CN105387554A CN105387554A CN201510677543.1A CN201510677543A CN105387554A CN 105387554 A CN105387554 A CN 105387554A CN 201510677543 A CN201510677543 A CN 201510677543A CN 105387554 A CN105387554 A CN 105387554A
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- air
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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
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
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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
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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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
- F24F13/20—Casings or covers
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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
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air exchange device and an air exchange method. The air exchange device comprises a fresh air channel and an exhaust channel which cross in a heat exchange core. The air exchange device is characterized in that the air exchange device further comprises an air return channel, the air return channel is provided with an inlet used for introducing in indoor air and an outlet used for exhausting indoor air, and the outlet of the air return channel is communicated with the part, on the upstream portion of the heat exchange core, of the fresh air channel. According to the technical scheme, indoor air is guided into the part, on the upstream portion of the heat exchange core, of the fresh air channel, the temperature of outdoor fresh air entering the heat exchange core is raised, and the problem that a heat exchange core is blocked due to freezing in the prior art can be solved.
Description
Technical field
The present invention relates to air interchanger field, in particular to a kind of air interchanger and air exchanging method.
Background technology
In prior art, when the air interchanger of Total heat exchange type uses in the winter time, if outdoor new air temperature carries out heat exchange by heat exchanging core when reaching below-10 DEG C, by indoor exhaust wind side during segregate air channel can because of gas in freezing of contained humidity and passage, return air is reduced, hinders the carrying out of heat exchange.
Existing Total heat exchange type air interchanger blocks because freezing to prevent heat exchanging core, can use under low temperature environment (less than-10 DEG C), and main employing three kinds of modes:
1, at the fresh inlet place of air interchanger, air-valve is installed, is entered the new wind air themperature of heat exchanging core by temperature sensor monitors, when temperature is closed lower than air-valve during setting value, block extraneous Cryogenic air and enter indoor by heat exchanging core;
2, in machine, new wind air inlet installs electric auxiliary heat, after new air temperature heats new wind lower than the auxiliary heat unlatching of electricity during setting value, pass through heat exchanging core again;
3, increase " cold case " parts outward at machine, when new air temperature is more than setting value, air-valve does not move, and this stylish wind can enter indoor by heat exchanging core, outside air draft discharge chamber; When new air temperature is lower than air-valve motion during setting value, this stylish wind is blocked and can not enters indoor, and air draft is back to indoor by fresh wind port.
The cardinal principle that heat exchanging core blocks because freezing is solved: when outside air temperature reaches lower than intercepting outside air by air-valve action during design temperature the object preventing from freezing to block heat exchanging core by heat exchanging core in prior art; Or in heat exchanging core, carry out heat exchange with indoor exhaust wind again after the auxiliary heat of electricity consumption is preheated the new wind in outdoor, thus prevent freeze and block core body.
Existing anti-freeze scheme has the shortcoming blocking fresh-air ventilation function, increase units consumption, reduce heat exchanger effectiveness and the loss of increase heat exchanging core.
Summary of the invention
Main purpose of the present invention is to provide a kind of air interchanger and air exchanging method, with solve heat exchanging core of the prior art because of freeze and obstructing problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of air interchanger, comprise new wind passage and air exhaust passage, new wind passage and air exhaust passage intersect at heat exchanging core, and it is characterized in that, air interchanger also comprises return air channel, return air channel has import for introducing room air and discharges the outlet of room air, and the outlet of return air channel is to the part being positioned at heat exchanging core upstream of new wind passage.
Further, new wind passage is provided with the first opening with the outlet of return air channel, the first opening is positioned at the upstream of heat exchanging core; And/or air exhaust passage is provided with the second opening with the inlet communication of return air channel, the second opening is positioned at the upstream of heat exchanging core.
Further, return air channel is provided with valve.
Further, new wind passage is provided with valve, valve is arranged on the upstream of the junction of new wind passage and return air channel.
Further, the new import of wind passage and the outlet of return air channel are angularly arranged, air interchanger also comprises valve, valve comprises the valve plate that pivotable is arranged, valve plate has the primary importance of import of the new wind passage of shutoff and the second place of the outlet of shutoff return air channel, the pivoting centre of valve plate is between the import and the outlet of return air channel of new wind passage, and valve plate is arranged between the first position and the second position rotationally around pivoting centre.
Further, air interchanger also comprises: controller, is connected with valve; Sensor part, comprises temperature sensor and/or humidity sensor, and sensor part is arranged in new wind passage, and sensor part is connected with controller.
Further, air interchanger also comprises human-computer interaction device, and human-computer interaction device is connected with controller.
Further, new wind passage comprises the first passage section being arranged on heat exchanging core upstream, and sensor part is arranged in first passage section.
Further, one end of the close heat exchanging core of first passage section is provided with sensor part; And/or one end away from heat exchanging core of first passage section is provided with sensor part.
Further, be provided with new wind blower fan in new wind passage, be provided with exhaust fan in air exhaust passage, air interchanger also comprises: controller, is connected with the motor of new wind turbine and/or exhaust fan; Sensor part, comprises the speed probe and/or room pressure detecting unit that are connected with blower fan.
Further, sensor part comprises room pressure detecting unit, and room pressure detecting unit comprises two static pressure detecting sensors, and two static pressure detecting sensors are separately positioned in new wind passage and air exhaust passage.
Further, also comprise cavity, the sidewall that two of cavity are relative abuts the two ends of heat exchanging core respectively, cavity is divided into two points of cavitys by heat exchanging core, in each point of cavity, cavity dividing plate is all set, cavity is divided to be divided into two venting cavities all communicated with heat exchanging core by cavity dividing plate, two venting cavities being positioned at the first side of heat exchanging core comprise the first venting cavity and the second venting cavity, the chamber wall of the first venting cavity is provided with the outlet of air exhaust passage, the chamber wall of the second venting cavity is provided with the import of new wind passage; Two venting cavities being positioned at the second side of heat exchanging core comprise the 3rd venting cavity and the 4th venting cavity, the chamber wall of the 3rd venting cavity is provided with the outlet of new wind passage, the chamber wall of the 4th venting cavity is provided with the import of air exhaust passage, wherein, new wind passage comprises the second venting cavity, the new distinguished and admirable road of heat exchanging core and the 3rd venting cavity; Air exhaust passage comprise the 4th venting cavity, heat exchanging core indoor exhaust wind runner and the first venting cavity.
Further, also comprise housing, be provided with case partition in housing, the first side of case partition is cavity, and the second side of case partition is return air channel, and import and the outlet of return air channel are all arranged on case partition.
According to a further aspect in the invention, provide a kind of air exchanging method, it is characterized in that, comprising: make outdoor new wind and indoor exhaust wind be delivered to indoor after heat exchange in heat exchanging core, make the indoor exhaust wind after heat exchange be delivered to outdoor; Indoor exhaust wind before the new wind place of entering, the outdoor of heat exchanging core introduces heat exchange
Further, the indoor exhaust wind before the new wind place of entering, outdoor of heat exchanging core introduces heat exchange comprises: the temperature of new wind outside sensing chamber; If the temperature of outdoor new wind is lower than first threshold, to outdoor, the new wind place of entering introduces indoor return air.
Further, introduce the indoor exhaust wind before heat exchange at the new wind place of entering, outdoor of heat exchanging core and comprise: the wind that mixes of outdoor new wind and indoor return air is introduced outdoor new wind and entered place, and detection mixes temperature and/or the humidity of wind; If the temperature of mixing wind is lower than the humidity of Second Threshold and/or mixing wind higher than the 3rd threshold value, the air quantity and/or the increase that reduce the new wind in outdoor entering the outdoor new wind place of entering enter the air quantity that outdoor new wind enters the indoor exhaust wind at place.
Further, the air quantity of the new wind in outdoor and/or the air quantity of indoor exhaust wind that outdoor new wind enters place is entered by changing, realize mixing wind temperature higher than Second Threshold and/or mixing wind humidity lower than after the 3rd threshold value, when the temperature of outdoor new wind is in preset range, no longer change and enter the air quantity of the new wind in outdoor and/or the air quantity of indoor exhaust wind that outdoor new wind enters place, wherein preset range is first threshold ± 5 DEG C.
Further, the indoor exhaust wind before the new wind place of entering, outdoor of heat exchanging core introduces heat exchange comprises: if when freezing appears in heat exchanging core, and the outdoor new wind of cut-off enters outdoor new wind and enters place, and the outdoor new wind place of entering all introduces indoor exhaust wind; Or if when outdoor temperature is lower than the 4th threshold values, ends the new wind in described outdoor and enter the new wind in described outdoor and enter place, the new wind place of entering, described outdoor all introduces described indoor exhaust wind.
Further, the indoor exhaust wind before the new wind place of entering, outdoor of heat exchanging core introduces heat exchange comprises: detect room pressure; If room pressure is less than pressure outside, increase to the new wind in outdoor of indoor introducing air quantity and/or reduce the air quantity of indoor exhaust wind of discharging.
Apply technical scheme of the present invention, room air guided into the new wind passage of the upstream of heat exchanging core, improve and enter the temperature of the new wind in outdoor of heat exchanging core, be conducive to solving the heat exchanging core that exists in prior art because freezing obstructing problem.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the air interchanger of embodiments of the invention;
Fig. 2 shows the side-looking structural representation of Fig. 1;
Fig. 3 shows the structural representation under the first duty of the air interchanger of embodiments of the invention;
Fig. 4 shows the side-looking structural representation of Fig. 3;
Fig. 5 shows the structural representation under the second duty of the air interchanger of embodiments of the invention;
Fig. 6 shows the side-looking structural representation of Fig. 5.
Fig. 7 shows the structural representation under the 3rd duty of the air interchanger of embodiments of the invention;
Fig. 8 shows the side-looking structural representation of Fig. 7.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As illustrated in fig. 1 and 2, the air interchanger of the present embodiment is full-thermal type air interchanger, air interchanger comprises cavity, the sidewall that two of cavity are relative abuts the two ends of heat exchanging core 19 respectively, cavity is divided into two points of cavitys by heat exchanging core 19, point cavity being arranged in heat exchanging core 19 first side is provided with the first cavity dividing plate 13, point cavity being arranged in heat exchanging core 19 second side is provided with the second cavity dividing plate 14, two point cavitys and is all divided into two venting cavities all communicated with heat exchanging core 19 by cavity dividing plate.
Two venting cavities being positioned at the first side of heat exchanging core 19 comprise the first venting cavity and the second venting cavity, and two venting cavities being positioned at the second side of heat exchanging core 19 comprise the 3rd venting cavity and the 4th venting cavity.
As shown in Figures 3 and 4, two venting cavities being positioned at the first side of heat exchanging core 19 comprise the first venting cavity and the second venting cavity, the chamber wall chamber wall of the first venting cavity being provided with outlet 1, second venting cavity of air exhaust passage are provided with the import 2 of new wind passage.
Two venting cavities being positioned at the second side of heat exchanging core 19 comprise the 3rd venting cavity and the 4th venting cavity, the chamber wall chamber wall of the 3rd venting cavity being provided with outlet the 3, four venting cavity of new wind passage are provided with the import 4 of air exhaust passage.
The indoor exhaust wind runner of the 4th venting cavity, heat exchanging core 19 and the first venting cavity form air exhaust passage A.New distinguished and admirable road and the 3rd venting cavity of the second venting cavity, heat exchanging core 19 form new wind channel B.
Wherein, the import 4 of air exhaust passage and the outlet 3 of new wind passage are all positioned at indoor.The outlet 1 of air exhaust passage is positioned on the sidewall relative with heat exchanging core 19 of the first venting cavity, and the import 2 of new wind passage is positioned on the sidewall relative with heat exchanging core 19 of the second venting cavity.
The outlet 3 of new wind passage is positioned on the sidewall relative with heat exchanging core 19 of the 3rd venting cavity.The import 4 of air exhaust passage is positioned on the sidewall relative with heat exchanging core 19 of the 4th venting cavity.
Be provided with case partition in housing, the first side of case partition is cavity, and the second side of case partition is return air channel 8.The import 9 of return air channel is formed on case partition, and communicates with the 4th venting cavity.The outlet 6 of return air channel is formed on case partition, and the second venting cavity communicates.
As shown in Figure 3 and Figure 4, new wind passage and air exhaust passage intersect at heat exchanging core 19, the heat exchange of outdoor new wind and indoor exhaust wind is completed in heat exchanging core 19, air interchanger also comprises return air channel 8, return air channel has for introducing the import 9 of room air and discharging the outlet 6 of room air, and the outlet 6 of return air channel 8 is communicated to the part being positioned at heat exchanging core 19 upstream of new wind passage.
Room air is guided into the new wind passage of the upstream of heat exchanging core 19, improves and enter the temperature of the new wind in outdoor of heat exchanging core 19, be conducive to solving the heat exchanging core that exists in prior art because freezing obstructing problem.
The air exchanging method of the present embodiment comprises: make outdoor new wind and indoor exhaust wind be delivered to indoor after heat exchange in heat exchanging core 3, make the described indoor exhaust wind after heat exchange be delivered to outdoor; Described indoor exhaust wind before the new wind place of entering, outdoor of described heat exchanging core 3 introduces heat exchange.
Can when in outdoor, the temperature of new wind be lower, the new wind of room air being guided into heat exchanging core 19 enters place, enters heat exchanging core 19 after the new wind in room air and outdoor is mixed, and avoids heat exchanging core 19 to occur freezing the phenomenon of blocking.
As illustrated in Figures 5 and 6, after outdoor new wind B and room air C mixes, enter in heat exchanging core 19, in the outlet 3 of the dirty wind passage that makes new advances of the driving of new wind blower fan 12.
When heat exchanging core 19 there is freezing of moisture and passage, new wind room air can being guided into heat exchanging core 19 enters place, thaws to heat exchanging core 19.
If when freezing appears in described heat exchanging core 3, end the new wind in described outdoor and enter the new wind in described outdoor and enter place, the new wind place of entering, described outdoor is the described indoor exhaust wind of introducing all.
As shown in FIG. 7 and 8, the import 2 of new wind passage enters without the new wind in outdoor, and the new wind that room air C flows to heat exchanging core 19 via return air channel enters place, is then flowed out by the outlet 3 of new wind passage.
In the present embodiment, new wind passage is provided with the first opening be communicated with the outlet 6 of return air channel, the first opening is positioned at the upstream of heat exchanging core 19.
Air exhaust passage is provided with the second opening be communicated with the import 9 of return air channel, the second opening is positioned at the upstream of heat exchanging core 19.
Alternatively, return air channel 8 is provided with valve.By the aperture of control valve, the new wind entering heat exchanging core 19 is regulated to enter the amount of the room air at place.The new wind entering heat exchanging core 19 enter the total blast volume at place certain when, the increase of room air makes to enter the air quantity reduction that above-mentioned new wind enters the new wind in outdoor at place, this improves the temperature of heat exchanging core 19, prevent the situation of blocking of freezing.
Can also be that new wind passage is provided with valve, valve be arranged on the upstream of the junction of new wind passage and return air channel.By regulating the air quantity of the new wind in outdoor entered in new wind passage, realize the adjustment of the temperature to the mist that heat exchanging core 19 enters.
Can also be that new wind passage is provided with valve, return air channel 8 also be provided with valve simultaneously.
In the present embodiment, the import 2 of new wind passage is angularly arranged with the outlet 6 of return air channel, air interchanger also comprises valve, valve comprises the valve plate 5 that pivotable is arranged, valve plate 5 has the primary importance of import 2 of the new wind passage of shutoff and the second place of the outlet 6 of shutoff return air channel, the pivoting centre of valve plate 5 is between the import 2 and the outlet 6 of return air channel of new wind passage, and valve plate 5 is arranged between the first position and the second position rotationally around pivoting centre.
What increase the outlet 6 of return air channel in the process that valve plate 5 opening angle constantly increases gradually crosses wind area, reduction resistance, air valve plate 5 stops accordingly from the new wind in outdoor that the import 2 of new wind passage enters simultaneously, making the air quantity that enters from return air channel 8 upon mixing, proportion progressively rises, the air quantity that the corresponding import 2 from new wind passage enters outdoor new wind upon mixing new wind proportion progressively decline, mixed new air temperature is improved gradually.
New wind passage comprises the first passage section being arranged on heat exchanging core 19 upstream, and sensor part is arranged in first passage section.In the present embodiment, first passage section is the second venting cavity.
One end of the close heat exchanging core 19 of first passage section is provided with the first temperature sensor 7, first temperature sensor 7 for detecting the temperature of the mist of the new wind in the outdoor entering heat exchanging core 19 and room air.
One end away from heat exchanging core 19 of first passage section is provided with the temperature of the second temperature sensor 10, second temperature sensor 10 for wind new outside sensing chamber.Second temperature sensor 10 is arranged on import 2 place of new wind passage, in order to the temperature of wind new outside sensing chamber.
One end of the close heat exchanging core 19 of first passage section is also provided with the first humidity sensor 15.First humidity sensor 15, for detecting the humidity of the mist of the new wind in the outdoor entering heat exchanging core 19 and room air.
When the second temperature sensor 10 detects that outdoor new air temperature is not less than first threshold φ, such as first threshold is subzero less than 10 DEG C, and valve plate 5 is in the closure state of the outlet of shutoff return air channel 8, introduces outdoor new wind.
Now, as shown in Figure 3, Figure 4, outdoor new wind enters the second venting cavity by the import 2 of outdoor new wind to air-flow in dilution air plant, then enters the 3rd venting cavity through heat exchanging core 19, through becoming the outlet 3 of new wind passage discharged to indoor again, thus form new wind path B.Indoor exhaust wind enters the 4th venting cavity by the import 4 of air exhaust passage, then enters the first venting cavity through heat exchanging core 19, then after through the outlet 1 of air exhaust passage discharged to outdoor, thus form air exhaust passage A.The flowing of outdoor new wind and the different runners of indoor exhaust wind in heat exchanging core 19, outdoor newly wind and indoor exhaust wind owing to there is temperature and psychrometric difference, so complete the exchange of temperature and humidity in Total heat exchange core body.
When the second temperature sensor 10 detects that outdoor new air temperature is opened lower than valve plate during first threshold φ 5, valve plate 5 opening angle size controls by the temperature of the mixing air of the new wind of room air and outdoor detected according to the second temperature sensor 7.If the temperature of mixing wind lower than Second Threshold, then correspondingly increases the aperture of valve plate 5, to increase the air quantity of room air and/or to reduce the air quantity of outdoor new wind.Fig. 5 and Fig. 6 illustrates the wind direction flow schematic diagram after the valve plate unlatching of the present embodiment.
Indoor exhaust wind before the described new wind place of entering, outdoor at heat exchanging core (3) introduces heat exchange comprises: the temperature detecting the new wind in described outdoor; If the temperature of the new wind in described outdoor is lower than first threshold, introduce described indoor return air to the new wind place of entering, described outdoor.
In the process that valve plate 5 opening angle constantly increases, the wind area of crossing of the outlet 6 of return air channel reduces resistance, valve plate 5 stops accordingly from the new wind in outdoor that the import 2 of new wind passage enters simultaneously, make the air quantity of room air upon mixing in new wind proportion progressively rise, corresponding new wind outdoor upon mixing in new wind proportion progressively decline, mixed new air temperature is improved gradually.
When the temperature detected reaching the first temperature sensor 7 reaches Second Threshold ψ, the opening angle of valve plate 5 keeps on a corresponding position, the humidity sensor 15 be simultaneously arranged near the first temperature sensor 7 detects mixing rheumatism degree, when the humidity value mixing wind exceedes humidity control three threshold value ω, continue the opening angle increasing valve plate 5, to regulate the humidity of mixing wind.When reaching the 3rd threshold value, the opening angle of valve plate 5 stops changing.
Indoor exhaust wind before the described new wind place of entering, outdoor at heat exchanging core 3 introduces heat exchange comprises: the wind that mixes of the new wind in described outdoor and described indoor return air is introduced the new wind in described outdoor and entered place, detects temperature and/or the humidity of described mixing wind; If the temperature of described mixing wind higher than the 3rd threshold value, reduces the air quantity that enters the new wind in described outdoor at the new wind place of entering, described outdoor and/or increase enters the air quantity that the new wind in described outdoor enters the described indoor exhaust wind at place lower than the humidity of Second Threshold and/or described mixing wind.
Now mixing air temperature and humidity all reach requirement, and actual temperature is more than or equal to ψ, and actual humidity is less than or equal to ω.When change appears in outdoor temperature again, as first threshold ± 5 DEG C when the variations in temperature causing the second temperature sensor 10 to detect is in preset range, valve plate 5 does not move, if the change of temperature sensor 10 detected temperatures exceedes above-mentioned preset range, then control the valve plate 5 corresponding increase of motor adjustment opening angle or reduce to regulate mixed new air temperature and humidity again to reach setting requirement.
The air quantity of the new wind in described outdoor and/or the air quantity of described indoor exhaust wind that the new wind in described outdoor enters place is entered by changing, the temperature realizing described mixing wind higher than the humidity of Second Threshold and/or described mixing wind lower than after the 3rd threshold value, when the temperature of the new wind in described outdoor is in preset range, no longer change and enter the air quantity of the new wind in described outdoor and/or the air quantity of described indoor exhaust wind that the new wind in described outdoor enters place, wherein said preset range is first threshold ± 5 DEG C.
As shown in Figure 5, Figure 6, when the temperature of wind new outside the second temperature sensor 7 sensing chamber is lower than first threshold, valve plate 5 is opened, indoor room air is made to enter return air channel 8 by the import 9 of return air channel, outlet 6 through return air channel enters the second venting cavity, valve plate 5 opening angle increases can make outdoor new wind inlet reduction, and improve room air proportion in mixing wind, after mixing, wind passes through the outlet 3 of heat exchanging core 19 in new wind passage discharged to indoor.
In the present embodiment, also comprise controller, controller and the first temperature sensor 10, second temperature sensor 7 and humidity sensor 15, the temperature that controller detects according to the first temperature sensor 10, second temperature sensor 7, controls the unlatching of valve plate 5 according to above-mentioned principle.
Be provided with new wind blower fan 12 in new wind passage, be provided with exhaust fan 11 in air exhaust passage, air interchanger also comprises controller and sensor part.Sensor part comprises the speed probe 16,18 and/or room pressure detecting unit that are connected with blower fan.Sensor part comprises room pressure detecting unit, and room pressure detecting unit comprises two static pressure detecting sensors, 17, two static pressure detecting sensors 17 and is separately positioned in new wind passage and air exhaust passage.
Controller also comprises and being connected with the motor of new wind turbine 12 and/or exhaust fan 11.Controller, according to the pressure differential of new wind passage and air exhaust passage, regulates the rotating speed of new wind turbine 12 and/or exhaust fan 11, to make indoor pressure stability.
Two static pressure detecting sensors 17 comprise the first static pressure detecting sensor and the second static pressure detecting sensor, close heat exchanging core 19, the second static pressure detecting sensor that first static pressure detecting sensor is arranged on the first venting cavity of the outlet 1 being provided with air exhaust passage is arranged on the close heat exchanging core 19 of the 3rd venting cavity being provided with new wind channel outlet 3.
Indoor exhaust wind before the described new wind place of entering, outdoor at heat exchanging core 3 introduces heat exchange comprises: detect room pressure; If described room pressure is less than pressure outside, increase to the new wind in described outdoor of indoor introducing air quantity and/or reduce the air quantity of described indoor exhaust wind of discharging.
Also can be that the first static pressure detecting sensor is arranged on import 1 place of air exhaust passage, the second static pressure transducer be arranged on import 2 place of new wind passage.
The static pressure of new wind passage and air exhaust passage is detected by two static pressure detecting sensors 17, judge whether indoor air occurs negative pressure, thus controlled the rotating speed of new wind turbine 12 and/or exhaust fan 11 by controller, the air intake in conditioning chamber, air draft, arrive the object regulating room pressure.
Room air enters from the import 4 of air exhaust passage, by heat exchanging core 19 through the outlet 1 of air exhaust passage discharged to outdoor, outdoor new wind and room air two strands of air-flows complete heat exchange in heat exchanging core 19.Resistance in this stylish wind path can increase to some extent, by the new wind path that detects of device for detecting static pressure that arranges and air draft path exist pressure differential exceed setting pressure difference time, exhaust air rate is reduced by sending Signal Regulation exhaust fan 11 rotating speed to revolution speed control device, make both sides gallery pressure difference consistent with setting value, realize indoor and do not occur that presenting negative pressure because of excessive air draft makes outdoor air enter indoor from room gap location.
Along with the new air temperature in outdoor reduces gradually, the increase of valve plate 5 opening angle moves closer to maximum opening angle 90 °, now in dilution air plant, stream condition is close as shown in Figure 7, Figure 8, now exhaust fan 12 rotating speed is 0, and only being operated by new wind blower fan 12 provides the new wind in the outdoor of certain air quantity and indoor positive pressure.
The air interchanger of the present embodiment also comprises the speed detector 16 for detecting new wind blower fan 12 and/or exhaust fan 11, also comprises the control device 18 of the rotating speed controlling new wind blower fan 12 and/or exhaust fan 11 according to the signal of speed detector 16.Control device 18 can be controller.
In the present embodiment, new wind blower fan 12 and exhaust fan 11 are centrifugal blower.
In the present embodiment, air interchanger also comprises human-computer interaction device, and human-computer interaction device is connected with controller.User sets above-mentioned first threshold, Second Threshold and the 3rd threshold value by human-computer interaction device.
According to technical scheme of the present invention, crossover air interchanger, as shown in Figure 5,6, in figure, the design temperature (first threshold) of the first temperature sensor 10 can be set when dispatching from the factory by producer, and the design temperature (Second Threshold) of the second temperature sensor 7 can have project installation personnel or user to regulate within the specific limits according to actual service condition.
Serviceability temperature sensor detects surrounding flow temperature, can by user as required design temperature as threshold values, send signal to valve plate 5 control device.According in actual service condition, the setting value of temperature-detecting device is changed, during as design temperature (namely above-mentioned preset range) is revised as first threshold-5 DEG C from first threshold-10 DEG C, can make the corresponding raising of new air temperature being completed heat exchange by heat exchanging core, can realize different user needs the difference of temperature thus improves the comfort level of user.
According to the Total heat exchange type air interchanger in this technical scheme present embodiment of the present invention, as shown in Figure 5,6, in figure, the design temperature of humidity sensor 15 can set certain limit by producer and regulated by project installation personnel or user when dispatching from the factory.
Carry out mixing in the process reaching and improve and enter heat exchanging core gas flow temperature in the new wind in outdoor and indoor exhaust wind, for preventing producing condensate water during two bursts of air-flow mixing, unit running or user's house being had a negative impact, being reached by the humidity value of wind new after control mixing and preventing the phenomenon of condensate water from occurring.
Use humidity sensor to detect surrounding flow humidity, can set humidity value as required as threshold values by user, aweather control valve device sends signal.Change the setting value of humidity detector according in actual service condition, realizing preventing producing a large amount of solidifying water because mixing new wind affects user's use.
Total heat exchange type air interchanger in present embodiment, as shown in Figure 5,6, to arrange in machine device for detecting static pressure to detect the pressure differential of new wind path and air draft path, the pressure difference value according to setting regulates air draft centrifugal blower rotating speed by Rotating speed measring and control device, control air draft air quantity.
The new corresponding increase of wind channel resistance after outdoor temperature is opened lower than setting value air-valve, if air draft air quantity is higher than wind air quantity new after mixing, indoor present negative pressure and then there will be outdoor air directly by the suction chamber of position, gap, room, need to control air draft centrifugal blower in the case and reduce exhaust air rate, make indoor again be in malleation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1. an air interchanger, comprise new wind passage and air exhaust passage, described new wind passage and described air exhaust passage intersect at heat exchanging core (19), it is characterized in that, described air interchanger also comprises return air channel (8), described return air channel has the import (9) for introducing room air and discharges the outlet (6) of described room air, and the outlet (6) of described return air channel is communicated to the part being positioned at described heat exchanging core (19) upstream of described new wind passage.
2. air interchanger according to claim 1, is characterized in that,
Described new wind passage is provided with the first opening be communicated with the outlet of described return air channel (6), described first opening is positioned at the upstream of the new wind side of described heat exchanging core (19); And/or,
Described air exhaust passage is provided with the second opening be communicated with the import of described return air channel (9), described second opening is positioned at the upstream of described heat exchanging core (19) air draft side.
3. air interchanger according to claim 1, is characterized in that, (8) are provided with valve to described return air channel.
4. air interchanger according to claim 1, is characterized in that, described new wind passage is provided with valve, and described valve is arranged on the upstream of the junction of described new wind passage and described return air channel.
5. air interchanger according to claim 1, it is characterized in that, the import (2) of described new wind passage and the outlet (6) of described return air channel are angularly arranged, described air interchanger also comprises valve, described valve comprises the valve plate (5) that pivotable is arranged, described valve plate (5) has the second place of the outlet (6) of return air channel described in the primary importance of the import (2) of new wind passage described in shutoff and shutoff, between the import (2) that the pivoting centre of described valve plate (5) is positioned at described new wind passage and the outlet (6) of described return air channel, described valve plate (5) is arranged between described primary importance and the second place rotationally around described pivoting centre.
6. the air interchanger according to any one of claim 3 to 5, is characterized in that, described air interchanger also comprises:
Controller, is connected with described valve;
Sensor part, comprises temperature sensor (7,10) and/or humidity sensor (15), and described sensor part is arranged in described new wind passage, and described sensor part is connected with described controller.
7. air interchanger according to claim 6, is characterized in that, described air interchanger also comprises human-computer interaction device, and described human-computer interaction device is connected with described controller.
8. air interchanger according to claim 6, is characterized in that, described new wind passage comprises the first passage section being arranged on described heat exchanging core (19) upstream, and described sensor part is arranged in described first passage section.
9. air interchanger according to claim 8, is characterized in that,
One end of the close described heat exchanging core (19) of described first passage section is provided with described sensor part; And/or,
One end away from described heat exchanging core (19) of described first passage section is provided with described sensor part.
10. air interchanger according to claim 1, is characterized in that, be provided with new wind blower fan (12) in described new wind passage, be provided with exhaust fan (11) in described air exhaust passage, described air interchanger also comprises:
Controller, is connected with the motor of described new wind turbine (12) and/or described exhaust fan (11);
Sensor part, comprises the speed probe (16,18) and/or room pressure detecting unit that are connected with described blower fan.
11. air interchangers according to claim 10, it is characterized in that, described sensor part comprises described room pressure detecting unit, described room pressure detecting unit comprises two static pressure detecting sensors (17), and two described static pressure detecting sensors (17) are separately positioned in described new wind passage and described air exhaust passage.
12. air interchangers according to claim 1, it is characterized in that, also comprise cavity, the sidewall that two of described cavity are relative abuts the two ends of described heat exchanging core (19) respectively, described cavity is divided into two points of cavitys by described heat exchanging core (19), all arrange cavity dividing plate (13,14) in each described point cavity, described point of cavity is divided into two venting cavities all communicated with described heat exchanging core (19) by described cavity dividing plate
Two the described venting cavities being positioned at the first side of described heat exchanging core (19) comprise the first venting cavity and the second venting cavity, the chamber wall of described first venting cavity is provided with the outlet (1) of described air exhaust passage, the chamber wall of described second venting cavity is provided with the import (2) of described new wind passage;
Two the described venting cavities being positioned at the second side of described heat exchanging core (19) comprise the 3rd venting cavity and the 4th venting cavity, the chamber wall of described 3rd venting cavity is provided with the outlet (3) of described new wind passage, the chamber wall of described 4th venting cavity is provided with the import (4) of described air exhaust passage
Wherein, described new wind passage comprises described second venting cavity, the new distinguished and admirable road of described heat exchanging core (19) and described 3rd venting cavity;
Described air exhaust passage comprise described 4th venting cavity, described heat exchanging core (19) indoor exhaust wind runner and described first venting cavity.
13. air interchangers according to claim 12, it is characterized in that, also comprise housing, case partition is provided with in described housing, first side of described case partition is described cavity, second side of described case partition is described return air channel (8), and import and the outlet of described return air channel (8) are all arranged on described case partition.
14. 1 kinds of air exchanging methods, is characterized in that, comprising:
Make outdoor new wind and indoor exhaust wind be delivered to indoor after heat exchange in heat exchanging core (3), make the described indoor exhaust wind after heat exchange be delivered to outdoor;
Described indoor exhaust wind before the new wind place of entering, outdoor of described heat exchanging core (3) introduces heat exchange.
15. air exchanging methods according to claim 14, is characterized in that, the indoor exhaust wind before the described new wind place of entering, outdoor at heat exchanging core (3) introduces heat exchange comprises:
Detect the temperature of the new wind in described outdoor;
If the temperature of the new wind in described outdoor is lower than first threshold, introduce described indoor return air to the new wind place of entering, described outdoor.
16. air exchanging methods according to claim 14, is characterized in that, the indoor exhaust wind before the described new wind place of entering, outdoor at heat exchanging core (3) introduces heat exchange comprises:
The wind that mixes of the new wind in described outdoor and described indoor return air is introduced the new wind in described outdoor and is entered place, detects temperature and/or the humidity of described mixing wind;
If the temperature of described mixing wind higher than the 3rd threshold value, reduces the air quantity that enters the new wind in described outdoor at the new wind place of entering, described outdoor and/or increase enters the air quantity that the new wind in described outdoor enters the described indoor exhaust wind at place lower than the humidity of Second Threshold and/or described mixing wind.
17. air exchanging methods according to claim 16, it is characterized in that, the air quantity of the new wind in described outdoor and/or the air quantity of described indoor exhaust wind that the new wind in described outdoor enters place is entered by changing, the temperature realizing described mixing wind higher than the humidity of Second Threshold and/or described mixing wind lower than after the 3rd threshold value, when the temperature of the new wind in described outdoor is in preset range, no longer change and enter the air quantity of the new wind in described outdoor and/or the air quantity of described indoor exhaust wind that the new wind in described outdoor enters place, wherein said preset range is first threshold ± 5 DEG C.
18. air exchanging methods according to claim 14, is characterized in that, the indoor exhaust wind before the described new wind place of entering, outdoor at heat exchanging core (3) introduces heat exchange comprises:
If when freezing appears in described heat exchanging core (3), end the new wind in described outdoor and enter the new wind in described outdoor and enter place, the new wind place of entering, described outdoor is the described indoor exhaust wind of introducing all; Or,
If when outdoor temperature is lower than the 4th threshold values, ends the new wind in described outdoor and enter the new wind in described outdoor and enter place, the new wind place of entering, described outdoor all introduces described indoor exhaust wind.
19. air exchanging methods according to claim 14, is characterized in that, the indoor exhaust wind before the described new wind place of entering, outdoor at heat exchanging core (3) introduces heat exchange comprises:
Detect room pressure;
If described room pressure is less than pressure outside, increase to the new wind in described outdoor of indoor introducing air quantity and/or reduce the air quantity of described indoor exhaust wind of discharging.
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