CN114110785A - Heat exchange air port structure, control method thereof and air conditioner - Google Patents
Heat exchange air port structure, control method thereof and air conditioner Download PDFInfo
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- CN114110785A CN114110785A CN202111397581.3A CN202111397581A CN114110785A CN 114110785 A CN114110785 A CN 114110785A CN 202111397581 A CN202111397581 A CN 202111397581A CN 114110785 A CN114110785 A CN 114110785A
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the 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
- 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
- F24F11/46—Improving electric energy efficiency or saving
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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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted 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
- 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
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Abstract
The invention provides a heat exchange air port structure, a control method thereof and an air conditioner, wherein the heat exchange air port structure comprises a fresh air flow channel, a return air flow channel, an inefficient total heat exchange core and a high-efficiency total heat exchange core, and air flows respectively in the fresh air flow channel and the return air flow channel can be controlled to carry out heat exchange through the inefficient total heat exchange core and/or carry out heat exchange through the high-efficiency total heat exchange core. According to the invention, the air flow in the fresh air flow channel and the return air flow channel can be selectively controlled at the low-efficiency total heat exchange core and/or the high-efficiency total heat exchange core for heat exchange, so that the heat exchange air port structure can select the heat exchange flow path line according to the actual requirement of air flow heat exchange, and the efficiency waste and the wind resistance overflow caused by different heat exchange requirements under different working conditions of only a single total heat exchange core in the prior art can be effectively improved.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a heat exchange air port structure, a control method thereof and an air conditioner.
Background
The requirements of people on indoor air quality and health comfort are increasingly improved, and the energy consumption of the brought fresh air is always high. The contradiction between the quality of fresh air and the increase of energy consumption can be relieved by applying the air waste heat recovery technology, but the development, the popularization and the application of the traditional total heat recovery core are restricted by the problems of low heat exchange efficiency, large resistance loss and the like. The main factors influencing the heat exchange efficiency of the core body are as follows: the heat exchange surface area inside the core body, the heat exchange flow channel form of the core body, the circulation time of air in the total heat exchange core body, and the like.
The common core body in the market at present divides cold air and hot air into an upper layer and a lower layer, and heat and moisture exchange is carried out through a heat exchange membrane material. The heat and moisture exchange is carried out through the air on the two sides of the core film, and the heat or the cold in the air is effectively utilized. However, the core body on the market at present is usually formed by a whole block, and the same structure is adopted for different air volume requirements, so that the air resistance is larger under the condition of small air volume; and under the condition of large air quantity, the heat exchange efficiency is insufficient.
Disclosure of Invention
Therefore, the invention provides a heat exchange air port structure, a control method thereof and an air conditioner, which can overcome the defects of efficiency waste and wind resistance overflow caused by different heat exchange requirements under different working conditions of only a single total heat exchange core in the air port structure in the related art.
In order to solve the above problems, the present invention provides a heat exchange tuyere structure, which includes a fresh air flow channel, a return air flow channel, an inefficient total heat exchange core, and a high efficient total heat exchange core, wherein the fresh air flow channel and the return air flow channel respectively have airflows that can be controlled to perform heat exchange via the inefficient total heat exchange core and/or perform heat exchange via the high efficient total heat exchange core.
In some embodiments, the heat exchange air inlet structure further comprises a first air valve for controlling the fresh air flow channel air inlet section to communicate with at least one of the low efficiency total heat exchange core and the high efficiency total heat exchange core, and a second air valve for controlling the return air flow channel air inlet section to communicate with at least one of the low efficiency total heat exchange core and the high efficiency total heat exchange core.
In some embodiments, the first air valve is a fan air valve; and/or the second air valve is a fan-shaped air valve.
In some embodiments, the heat-exchanging tuyere structure further comprises a control part configured to: when (h)Inner part-hOuter cover)≤hy1When the air conditioner is used, the first air valve is controlled to communicate the air inlet section of the fresh air flow channel with the low-efficiency total heat exchange core body, and the second air valve is controlled to communicate the air inlet section of the return air flow channel with the low-efficiency total heat exchange core body; when h is generatedy1≤(hInner part-hOuter cover)＜hy2When the air conditioner is used, the first air valve is controlled to communicate the air inlet section of the fresh air channel with the high-efficiency total heat exchange core, and the second air valve is controlled to communicate the air inlet section of the return air channel with the high-efficiency total heat exchange core; when (h)Inner part-hOuter cover)≥hy2When the air conditioner is used, the first air valve is controlled to communicate the air inlet section of the fresh air flow channel with the high-efficiency total heat exchange core and the low-efficiency total heat exchange core at the same time, and the second air valve is controlled to communicate the air inlet section of the return air flow channel with the high-efficiency total heat exchange core and the low-efficiency total heat exchange core at the same time, wherein h is the sum of the air inlet section of the fresh air flow channel and the high-efficiency total heat exchange core, and the air inlet section of the return air flow channel is communicated with the high-efficiency total heat exchange core and the low-efficiency total heat exchange core at the same timeInner partIs the enthalpy value, h, of the return air flow at the indoor sideOuter coverIs the enthalpy value, h, of the fresh air flow outside the chambery1Is a first predetermined enthalpy value, hy2Is the second preset enthalpy value.
The invention also provides an air conditioner which comprises the heat exchange air port structure.
The invention also provides a control method of the heat exchange tuyere structure, which is used for the heat exchange tuyere structure and comprises the following steps:
obtaining the temperature T of the indoor side return air flow of the heat exchange air port structureInner partHumidity and humiditydTemperature T of fresh air flow at inner and outer sidesOuter coverHumidity dOuter coverAnd based on the obtained TInner part、dInner part、TOuter cover、dOuter coverCalculating to obtain the enthalpy value h of the indoor return air flowInner partAnd enthalpy h of fresh air flow outside the roomOuter cover；
Judging the first preset enthalpy value hy1And a second predetermined enthalpy value hy2The magnitude relationship of (1);
and controlling the communication direction of the first air valve and the second air valve according to the size relation.
In some embodiments, controlling the direction of communication of the first and second dampers according to the magnitude relationship comprises:
when (h)Inner part-hOuter cover)≤hy1When the air conditioner is used, the first air valve is controlled to communicate the air inlet section of the fresh air flow channel with the low-efficiency total heat exchange core body, and the second air valve is controlled to communicate the air inlet section of the return air flow channel with the low-efficiency total heat exchange core body;
when h is generatedy1≤(hInner part-hOuter cover)＜hy2When the air conditioner is used, the first air valve is controlled to communicate the air inlet section of the fresh air channel with the high-efficiency total heat exchange core, and the second air valve is controlled to communicate the air inlet section of the return air channel with the high-efficiency total heat exchange core;
when (h)Inner part-hOuter cover)≥hy2And when the fresh air is exhausted, the air inlet section of the fresh air flow channel is communicated with the high-efficiency total heat exchange core and the low-efficiency total heat exchange core at the same time, and the air inlet section of the return air flow channel is communicated with the high-efficiency total heat exchange core and the low-efficiency total heat exchange core at the same time.
In some embodiments, hy1＝xhOuter coverAnd x is more than or equal to 0.35 and less than or equal to 0.45; and/or, hy2＝yhOuter cover，0.55≤y≤0.65。
According to the heat exchange air port structure, the control method and the air conditioner, the air flow in the fresh air flow channel and the return air flow channel can be selectively controlled to carry out heat exchange at the low-efficiency total heat exchange core body and/or the high-efficiency total heat exchange core body, so that the heat exchange air port structure can carry out selection of a heat exchange circulation path line according to the actual requirement of air flow heat exchange, efficiency waste and wind resistance overflow caused by different heat exchange requirements of a single total heat exchange core body under different working conditions in the prior art can be effectively improved, namely the heat exchange air port structure and the air conditioner select different heat exchange core bodies under different requirements by adjusting the selection of the internal high-efficiency total heat exchange core body and the low-efficiency total heat exchange core body, the wind resistance and the efficiency are considered, and the energy efficiency is effectively improved under the condition of meeting the requirements.
Drawings
FIG. 1 is a schematic view of the internal structure of a heat-exchanging tuyere structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a high-efficiency total heat exchange core participating in heat exchange;
FIG. 3 is a schematic view of a low efficiency total heat exchange core engaged in heat exchange;
FIG. 4 is a schematic diagram of the state where the high efficiency total heat exchange core and the low efficiency total heat exchange core participate in heat exchange simultaneously;
FIG. 5 is a schematic control logic diagram of the heat-exchanging tuyere structure according to the embodiment of the present invention.
The reference numerals are represented as:
1. a low efficiency total heat exchange core; 2. a high-efficiency total heat exchange core; 31. a first air valve; 32. a second air valve; 41. an air inlet section of the fresh air channel; 42. a fresh air channel air supply section; 51. an air inlet section of the air return channel; 52. an air exhaust section of the return air channel; 6. temperature and humidity sensor.
Detailed Description
Referring to fig. 1 to 5 in combination, according to an embodiment of the present invention, there is provided a heat exchange tuyere structure, which includes a housing (not shown, not referenced) having therein a fresh air flow passage, a return air flow passage, a low-efficiency total heat exchange core 1, and a high-efficiency total heat exchange core 2, wherein the fresh air flow passage and the return air flow passage respectively have air flows capable of being controlled to exchange heat via the low-efficiency total heat exchange core 1 and/or exchange heat via the high-efficiency total heat exchange core 2. In the technical scheme, the air flow in the fresh air flow channel and the return air flow channel can be selectively controlled at the low-efficiency total heat exchange core 1 and/or the high-efficiency total heat exchange core 2 for heat exchange, so that the heat exchange air port structure can select heat exchange circulation lines according to the actual requirements of air flow heat exchange, the efficiency waste and the wind resistance overflow caused by different heat exchange requirements of a single total heat exchange core under different working conditions in the prior art can be effectively improved, namely, the invention selects different heat exchange cores under different requirements by adjusting the selection of the internal high-efficiency total heat exchange core 2 and the low-efficiency total heat exchange core 1, realizes the consideration of the wind resistance and the efficiency, and effectively improves the energy efficiency under the condition of meeting the requirements.
The low-efficiency total heat exchange core body 1 and the high-efficiency total heat exchange core body 2 are polymer film heat exchange core bodies and/or paper film heat exchange core bodies, sensible heat and latent heat can be exchanged simultaneously, partial latent heat in air is effectively utilized, and energy utilization is achieved. Further, the low-efficiency total heat exchange core 1 and the high-efficiency total heat exchange core 2 can adopt plate heat exchangers in structural types. Certainly, under some circumstances, can also adopt different cores to make up the use to different operating modes, realize giving consideration to of cost, windage and efficiency. It should be noted that the heat exchange efficiency of each core may be different depending on the process of the manufacturer, the material of the heat exchange film (such as paper film, polymer film), the air duct structure inside the core (cross flow or countercurrent), etc., all of the aforementioned factors may cause the heat exchange efficiency of the core to be different, and the core is a more marketable finished product, and the heat exchange efficiency of the core is generally marked, and the determination of high efficiency and low efficiency is actually that the two cores adopt one or more variables to adjust according to the above factors, so as to realize the difference in heat exchange efficiency of the two cores.
The shapes of the low-efficiency total heat exchange core 1 and the high-efficiency total heat exchange core 2 can be quadrangle (rectangle or rhombus), hexagon and the like, the low-efficiency total heat exchange core 1 and the high-efficiency total heat exchange core 2 are supported in the shell through a supporting frame, the supporting frame can be one of a hollow plate frame, an injection molding frame and a self-supporting frame, and the supporting frame is not particularly limited as long as the supporting function is realized.
In some embodiments, the heat exchange tuyere structure further comprises a first air valve 31 and a second air valve 32, the first air valve 31 is used for controlling the fresh air channel air inlet section 41 to be communicated with at least one of the low-efficiency total heat exchange core 1 and the high-efficiency total heat exchange core 2, and the second air valve 32 is used for controlling the return air channel air inlet section 51 to be communicated with at least one of the low-efficiency total heat exchange core 1 and the high-efficiency total heat exchange core 2.
In some embodiments, the first damper 31 is a fan damper; and/or the second air valve 32 is a fan-shaped air valve.
In some embodiments, the heat-exchanging tuyere structure further comprises a control part configured to: when (h)Inner part-hOuter cover)≤hy1When the air conditioner is used, the first air valve 31 is controlled to communicate the fresh air channel air inlet section 41 with the low-efficiency total heat exchange core 1, and the second air valve 32 is controlled to communicate the return air channel air inlet section 51 with the low-efficiency total heat exchange core 1; when h is generatedy1≤(hInner part-hOuter cover)＜hy2When the air conditioner is used, the first air valve 31 is controlled to communicate the fresh air channel air inlet section 41 with the high-efficiency total heat exchange core 2, and the second air valve 32 is controlled to communicate the return air channel air inlet section 51 with the high-efficiency total heat exchange core 2; when (h)Inner part-hOuter cover)≥hy2When the heat exchanger is used, the first air valve 31 is controlled to simultaneously communicate the fresh air flow channel air inlet section 41 with the high-efficiency total heat exchange core 2 and the low-efficiency total heat exchange core 1, the second air valve 32 is controlled to simultaneously communicate the return air flow channel air inlet section 51 with the high-efficiency total heat exchange core 2 and the low-efficiency total heat exchange core 1, wherein h is the total heat exchange core 2Inner partIs the enthalpy value, h, of the return air flow at the indoor sideOuter coverIs the enthalpy value, h, of the fresh air flow outside the chambery1Is a first predetermined enthalpy value, hy2Is the second preset enthalpy value. Therefore, the heat exchange air port structure can reasonably select the heat exchange core bodies participating in heat exchange according to the enthalpy values and the temperature differences of the air flows at the indoor side and the outdoor side, so that the exchange efficiency is reduced and the wind resistance of a unit is reduced when the enthalpy value difference is low; when the enthalpy value is poor, certain wind resistance is increased, the exchange efficiency is improved, efficient utilization of energy is realized, and cost is effectively reduced.
The invention also provides an air conditioner, in particular to a cabinet air conditioner with a fresh air introducing function or a refrigerating unit such as a fresh air fan and the like requiring a fresh air system, which comprises the heat exchange air port structure.
The invention also provides a control method of the heat exchange tuyere structure, which is used for the heat exchange tuyere structure and comprises the following steps:
the temperature T of the indoor side return air flow of the heat exchange air port structure is obtained through the corresponding temperature and humidity sensor 6Inner partHumidity and humiditydTemperature T of fresh air flow at inner and outer sidesOuter coverHumidity dOuter coverAnd based on the obtained TInner part、dInner part、TOuter cover、dOuter coverCalculating to obtain the enthalpy value h of the indoor return air flowInner partAnd enthalpy h of fresh air flow outside the roomOuter cover；
Judgment hInner part-hOuter coverAnd a first predetermined enthalpy value hy1And a second predetermined enthalpy value hy2The magnitude relationship of (1);
and controlling the communication direction of the first air valve 31 and the second air valve 32 according to the size relation.
In some embodiments, controlling the communication direction of the first and second dampers 31 and 32 according to the magnitude relationship includes:
when (h)Inner part-hOuter cover)≤hy1When the air conditioner is used, the first air valve 31 is controlled to communicate the fresh air channel air inlet section 41 with the low-efficiency total heat exchange core 1, and the second air valve 32 is controlled to communicate the return air channel air inlet section 51 with the low-efficiency total heat exchange core 1;
when h is generatedy1≤(hInner part-hOuter cover)＜hy2When the air conditioner is used, the first air valve 31 is controlled to communicate the fresh air channel air inlet section 41 with the high-efficiency total heat exchange core 2, and the second air valve 32 is controlled to communicate the return air channel air inlet section 51 with the high-efficiency total heat exchange core 2;
when (h)Inner part-hOuter cover)≥hy2When the air conditioner is used, the first air valve 31 is controlled to communicate the fresh air flow channel air inlet section 41 with the high-efficiency total heat exchange core 2 and the low-efficiency total heat exchange core 1 at the same time, and the second air valve 32 is controlled to communicate the return air flow channel air inlet section 51 with the high-efficiency total heat exchange core 2 and the low-efficiency total heat exchange core 1 at the same time.
In some embodiments, hy1＝xhOuter coverAnd x is more than or equal to 0.35 and less than or equal to 0.45; and/or, hy2＝yhOuter cover，0.55≤y≤0.65。
One control mode of the present invention is further described below in conjunction with fig. 5.
Detecting the temperature (T inside/T outside) and the humidity (d inside/d outside) at an indoor/outer air port, calculating the enthalpy (h inside/h outside), if the enthalpy (h inside-h outside)/h inside (h inside) is less than 40%, starting the low-efficiency core body mode, opening an o-q outlet by a first air valve 31, turning a second air valve 32 to the o-q outlet, and carrying out total heat exchange between fresh air and return air in a low-efficiency total heat exchange core body; if the conditions that the air flow rate is more than or equal to 40 percent (in-h-out)/in-h is less than 60 percent are met, the high-efficiency core body mode is started, the o-p outlet is opened by the first air valve 31, the o-p outlet is opened by the second air valve 32, and the fresh air and the return air are subjected to total heat exchange in the high-efficiency total heat exchange core body; if the requirement (in h-out) in/in h is more than or equal to 60 percent, the double-core mode is started, the first air valve 31 opens the outlet o-p-q, the second air valve 32 opens the outlet o-p-q, and the fresh air and the return air are subjected to total heat exchange in the high-efficiency and low-efficiency total heat exchange core body simultaneously. And (3) after the system operates for a preset time (T), continuously and circularly detecting the temperature (Tinside/Toutside) and the humidity (d inside/d outside) at the indoor/outer air opening, and calculating the enthalpy value (hIn/hEx). The control system shuts down the computer if receiving the ending instruction; and if the ending instruction is not received, continuing to run for the set time (t).
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (8)
1. The heat exchange tuyere structure is characterized by comprising a fresh air flow channel, a return air flow channel, a low-efficiency total heat exchange core body (1) and a high-efficiency total heat exchange core body (2), wherein the fresh air flow channel and the return air flow channel respectively have air flows which can be controlled to carry out heat exchange through the low-efficiency total heat exchange core body (1) and/or carry out heat exchange through the high-efficiency total heat exchange core body (2).
2. The heat exchange tuyere structure of claim 1, further comprising a first air valve (31) and a second air valve (32), wherein the first air valve (31) is used for controlling the air inlet section (41) of the fresh air flow channel to communicate with at least one of the low-efficiency total heat exchange core (1) and the high-efficiency total heat exchange core (2), and the second air valve (32) is used for controlling the air inlet section (51) of the return air flow channel to communicate with at least one of the low-efficiency total heat exchange core (1) and the high-efficiency total heat exchange core (2).
3. The heat-exchanging tuyere structure according to claim 2, wherein the first damper (31) is a fan-shaped damper; and/or the second air valve (32) is a fan-shaped air valve.
4. The heat-exchanging tuyere structure of claim 2, further comprising a control part configured to: when (h)Inner part-hOuter cover)≤hy1When the heat exchanger is used, the first air valve (31) is controlled to communicate the fresh air channel air inlet section (41) with the low-efficiency total heat exchange core (1), and the second air valve (32) is controlled to communicate the return air channel air inlet section (51) with the low-efficiency total heat exchange core (1); when h is generatedy1≤(hInner part-hOuter cover)＜hy2When the air conditioner is used, the first air valve (31) is controlled to communicate the fresh air channel air inlet section (41) with the high-efficiency total heat exchange core (2), and the second air valve (32) is controlled to communicate the return air channel air inlet section (51) with the high-efficiency total heat exchange core (2); when (h)Inner part-hOuter cover)≥hy2When the fresh air channel is in use, the first air valve (31) is controlled to enable the fresh air channel air inlet section (41) to be simultaneously communicated with the high air channelThe effective total heat exchange core body (2) is communicated with the ineffective total heat exchange core body (1), the second air valve (32) is controlled to simultaneously communicate the air inlet section (51) of the return air flow channel with the effective total heat exchange core body (2) and the ineffective total heat exchange core body (1), wherein h isInner partIs the enthalpy value, h, of the return air flow at the indoor sideOuter coverIs the enthalpy value, h, of the fresh air flow outside the chambery1Is a first predetermined enthalpy value, hy2Is the second preset enthalpy value.
5. An air conditioner characterized by comprising the heat-exchange tuyere structure of any one of claims 1 to 4.
6. A control method of a heat-exchanging tuyere structure, for controlling the heat-exchanging tuyere structure of any one of claims 2 to 4, comprising the steps of:
obtaining the temperature T of the indoor side return air flow of the heat exchange air port structureInner partHumidity and humiditydTemperature T of fresh air flow at inner and outer sidesOuter coverHumidity dOuter coverAnd based on the obtained TInner part、dInner part、TOuter cover、dOuter coverCalculating to obtain the enthalpy value h of the indoor return air flowInner partAnd enthalpy h of fresh air flow outside the roomOuter cover；
Judgment (h)Inner part-hOuter cover) And a first predetermined enthalpy value hy1And a second predetermined enthalpy value hy2The magnitude relationship of (1);
and controlling the communication direction of the first air valve (31) and the second air valve (32) according to the size relation.
7. The control method according to claim 6, wherein controlling the communication direction of the first and second dampers (31, 32) according to the magnitude relation includes:
when (h)Inner part-hOuter cover)≤hy1When the heat exchanger is used, the first air valve (31) is controlled to communicate the fresh air flow channel air inlet section (41) with the low-efficiency total heat exchange core body (1), and the second air valve (32) is controlled to communicate the return air flow channel air inlet section (51) with the low-efficiency total heat exchange core bodyThe low-efficiency total heat exchange cores (1) are communicated;
when h is generatedy1≤(hInner part-hOuter cover)＜hy2When the air conditioner is used, the first air valve (31) is controlled to communicate the fresh air channel air inlet section (41) with the high-efficiency total heat exchange core (2), and the second air valve (32) is controlled to communicate the return air channel air inlet section (51) with the high-efficiency total heat exchange core (2);
when (h)Inner part-hOuter cover)≥hy2When, control first blast gate (31) will new trend runner air inlet section (41) simultaneously with high-efficient total heat exchange core (2) and the total heat exchange core of inefficiency (1) intercommunication, control second blast gate (32) will return air runner air inlet section (51) simultaneously with high-efficient total heat exchange core (2) and the total heat exchange core of inefficiency (1) intercommunication.
8. Control method according to claim 7, characterized in that hy1＝xhOuter coverAnd x is more than or equal to 0.35 and less than or equal to 0.45; and/or, hy2＝yhOuter cover，0.55≤y≤0.65。
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