CN111076302B - Fresh air conditioner indoor unit, fresh air conditioner and control method of fresh air conditioner - Google Patents
Fresh air conditioner indoor unit, fresh air conditioner and control method of fresh air conditioner Download PDFInfo
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- CN111076302B CN111076302B CN201911248160.7A CN201911248160A CN111076302B CN 111076302 B CN111076302 B CN 111076302B CN 201911248160 A CN201911248160 A CN 201911248160A CN 111076302 B CN111076302 B CN 111076302B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 22
- 238000011144 upstream manufacturing Methods 0.000 claims description 46
- 230000035515 penetration Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005485 electric heating Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
-
- 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
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention provides a fresh air conditioner indoor unit, a fresh air conditioner and a control method thereof. The fresh air conditioner indoor unit comprises an air conditioner shell, wherein a heat exchange core body, a fresh air channel and an indoor return air channel are arranged in the air conditioner shell, a first runner and a second runner are arranged in the heat exchange core body in a constructed mode, the first runner and the second runner are arranged independently of each other, air flows respectively arranged in the first runner and the second runner can exchange heat with each other, when the heat exchange core body needs to be dried, the return air flow in the indoor return air channel can be sequentially guided into the second runner and the first runner, and is discharged to the outside from the indoor return air channel. According to the fresh air conditioner indoor unit, the fresh air conditioner and the control method thereof, the heat of indoor return air is used for carrying out convection drying on the heat exchange core body, so that the drying effect is good, and the environment friendliness is high.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to an indoor unit of a fresh air conditioner, the fresh air conditioner and a control method of the fresh air conditioner.
Background
The heat recovery type fresh air conditioner (also called fresh air unit) is provided with a heat exchange core, heat of indoor exhaust air flow is recovered through the heat exchange core to heat fresh air flow, so that the energy utilization rate is improved, the air conditioner is more energy-saving and environment-friendly, based on the aforesaid advantages of the design, the heat recovery type fresh air conditioner is widely applied, but when the existing heat recovery type fresh air conditioner is used in an ultralow temperature environment, due to the fact that the temperature difference between the indoor exhaust air flow and the outdoor fresh air flow is large, condensation water is extremely easy to form and even frost is formed on the heat exchange core, the heat exchange efficiency of the heat exchange core is seriously reduced, particularly, the heat exchange core or paper heat exchange core such as a metal frame is corroded, softened and damaged or frosted and cracked, corresponding drying components such as an electric heater dryer are additionally arranged in the prior art, the mode is more heat radiation drying, the drying effect on the relatively low heat exchange core (such as the paper heat exchange core) is poor, and the corresponding heat exchange core is not reasonably utilized, and the environment-friendly air conditioner has poor heat return performance.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the fresh air conditioner indoor unit, the fresh air conditioner and the control method thereof, and the heat of indoor return air is used for carrying out convection drying on the heat exchange core body, so that the drying effect is better and the environment friendliness is higher.
In order to solve the above problems, the present invention provides an indoor unit of a fresh air conditioner, which comprises an air conditioner housing, wherein a heat exchange core, a fresh air duct and an indoor return air duct are arranged in the air conditioner housing, a first runner and a second runner are configured in the heat exchange core, the first runner and the second runner are arranged independently from each other, and air flows respectively provided in the first runner and the second runner can exchange heat with each other, and when the heat exchange core needs to be dried, the return air flow in the indoor return air duct can be sequentially guided into the second runner and the first runner and discharged outdoors from the indoor return air duct.
Preferably, the indoor return air duct comprises a return air upstream section aiming at an indoor return air inlet and a return air downstream section aiming at an indoor return air outlet, and the return air upstream section and the return air downstream section are communicated through the first flow channel; and/or the fresh air duct comprises a fresh air upstream section for an outdoor fresh air inlet and a fresh air downstream section for an outdoor fresh air outlet, and the fresh air upstream section and the fresh air downstream section are communicated through the second flow channel.
Preferably, a first air valve and a second air valve are arranged in the return air upstream section, the first air valve is provided with a first through position for enabling the return air upstream section to be communicated with the fresh air downstream section and a first cut-off position for enabling the return air upstream section to be cut off from the fresh air downstream section, and the second air valve is provided with a second through position for enabling the return air upstream section to be communicated with the fresh air upstream section and a second cut-off position for enabling the return air upstream section to be cut off from the fresh air upstream section.
Preferably, the outdoor fresh air inlet and the outdoor fresh air outlet are respectively provided with a third air valve and a fourth air valve, and the penetration or the cutoff of the outdoor fresh air inlet and the outdoor fresh air outlet is respectively controlled.
Preferably, at least one of the outdoor fresh air inlet, the outdoor fresh air outlet and the indoor return air inlet is correspondingly provided with a filter element; and/or the indoor return air upstream section, the fresh air upstream section and the fresh air downstream section are all provided with temperature and humidity detection devices.
Preferably, the fresh air conditioner indoor unit further comprises a heat exchanger, and the heat exchanger is arranged in the fresh air downstream section to adjust the temperature of the fresh air flow in the fresh air downstream section.
Preferably, the fresh air conditioner indoor unit further comprises an electric heating device, and the electric heating device is located in the fresh air downstream section.
Preferably, the fresh air conditioner indoor unit further comprises an indoor return air fan, and the indoor return air fan is arranged adjacent to the indoor return air outlet; and/or, still include the new trend fan, the new trend fan is adjacent outdoor new trend export sets up.
The invention also provides a fresh air conditioner which comprises the air conditioner indoor unit.
The invention also provides a control method of the fresh air conditioner, which is used for controlling the fresh air conditioner and comprises the following steps:
acquiring an operation mode of an air conditioner;
and controlling the penetration or cutoff of the fresh air duct and the indoor return air duct with the first runner and the second runner according to the acquired operation mode, and controlling the start and stop of the indoor return air fan and/or the outdoor fresh air fan.
Preferably, when the operation mode is a heat exchange core drying mode, the first air valve is controlled to be in a first through position, the second air valve is controlled to be in a second through position, the third air valve and the fourth air valve are controlled to be cut off, the indoor return air fan is controlled to be started, and the outdoor fresh air fan is controlled not to be started or to stop operation; or when the operation mode is a full fresh air mode, the first air valve is controlled to be at a first cut-off position, the second air valve is controlled to be at a second cut-off position, the third air valve and the fourth air valve are controlled to be communicated, and the indoor return air fan and the outdoor fresh air fan are controlled to be both opened; or when the operation mode is the circulating air mode, the first air valve is controlled to be in a first cut-off position, the second air valve is controlled to be in a second through position, the third air valve is controlled to be cut off, the fourth air valve is controlled to be through, and the indoor return air fan is controlled not to be started or to stop operation, and the outdoor fresh air fan is controlled to be started.
The indoor return air flow with a certain amount of heat flows through the second flow passage and the first flow passage in sequence, so that the temperatures in all flow passages in the heat exchange core body are converged, condensation or frost generated in the first flow passage or the second flow passage in a previous operation mode can be dried by utilizing the heat of the indoor return air flow, and then discharged to the outside, so that the heat recovery of the indoor return air is fully utilized to perform convection heat dissipation on the heat exchange core body, the drying efficiency and the drying speed are higher, the indoor return air can be used for drying heat exchange core bodies with various main flow materials such as metal, paper, high polymer materials and the like, and the heat of the indoor return air is not excessively high and controllable (the temperature is uncontrollable after the electric heating in the prior art has faults, and fire hazards exist), so that the technical scheme of the invention is particularly suitable for the heat exchange core bodies with flammable materials, such as the heat exchange core bodies with paper materials.
Drawings
Fig. 1 is a schematic diagram of an internal structure of an indoor unit of a fresh air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic airflow diagram of the air conditioner in a drying mode (gray arrows in the figure indicate the flowing direction of indoor return air airflow);
fig. 3 is a schematic airflow diagram of the air conditioner in the circulating air mode (black arrows in the figure indicate the flowing direction of indoor return air airflow);
fig. 4 is an airflow schematic diagram when the air conditioner is in the fresh air mode (black arrows in the figure indicate the flow direction of indoor return air airflow, and gray arrows indicate the flow direction of outdoor fresh air airflow);
FIG. 5 is a schematic diagram of a system of a fresh air conditioner according to another embodiment of the present invention (solid arrows in the figure indicate refrigerant flow direction during heating and open arrows indicate refrigerant flow direction during cooling);
fig. 6 is a schematic diagram of a system of a fresh air conditioner according to another embodiment of the present invention (the hollow arrow in the figure indicates the flow direction of the refrigerant during refrigeration).
The reference numerals are expressed as:
1. an air conditioner case; 2. a heat exchange core; 311. an indoor return air inlet; 312. an indoor return air outlet; 321. a return air upstream section; 322. a return air downstream section; 331. an outdoor fresh air inlet; 332. an outdoor fresh air outlet; 341. a fresh air upstream section; 342. a fresh air downstream section; 41. a first damper; 42. a second air valve; 43. a third damper; 44. a fourth damper; 51. a filter; 52. a temperature and humidity detection device; 6. a heat exchanger; 71. an indoor return air fan; 72. fresh air blower; 8. an electric heating device; 100. an air conditioner indoor unit; 200. an air conditioner outdoor unit; 201. a compressor; 202. an outdoor heat exchanger; 203. a throttle element; 204. and a four-way valve.
Detailed Description
Referring to fig. 1 to 6, according to an embodiment of the present invention, there is provided an indoor unit of a fresh air conditioner, including an air conditioner housing 1, a heat exchange core 2, a fresh air duct, and an indoor return air duct are provided in the air conditioner housing 1, a first flow path and a second flow path are configured in the heat exchange core 2, the first flow path and the second flow path are independently provided, and airflows respectively provided therein can exchange heat with each other, when fresh air is required to be exchanged indoors, the indoor return air duct is communicated with the first flow path, the fresh air duct is communicated with the second flow path, at this time, the indoor return air is discharged outdoors through the indoor return air duct while the outdoor fresh air is simultaneously introduced indoors through the fresh air duct, and the indoor return air flow and the outdoor fresh air flow are heat exchanged at the heat exchange core 2, the heat in the indoor return air flow is recovered by the heat exchange core 2 and is conducted to the outdoor fresh air flow, so that the temperature of the outdoor fresh air flow is increased, when the heat exchange core 2 needs to be dried, the return air flow in the indoor return air channel can be sequentially led into the second flow channel and the first flow channel and discharged to the outside from the indoor return air channel, at the moment, the indoor return air flow with a certain heat sequentially flows through the second flow channel and the first flow channel, so that the temperature in all flow channels in the heat exchange core 2 is converged, the condensation or frost generated in the first flow channel or the second flow channel in the previous operation mode can be dried by utilizing the heat of the indoor return air flow, and then the cooled return air flow is discharged to the outside, so that the heat recovery of the indoor return air is fully utilized to perform convection heat dissipation on the heat exchange core 2, the drying efficiency and the drying speed are higher, the indoor return air can be used for drying heat exchange cores made of various main stream materials such as metal, paper, high polymer materials and the like, and the heat of the indoor return air is not too high and controllable (the electric heating in the prior art has the risk of uncontrollable temperature after failure, and further has fire hidden danger), so that the technical scheme of the invention is particularly suitable for heat exchange cores made of inflammable materials, such as paper heat exchange cores. It will be appreciated that the first flow channels and the second flow channels in the heat exchange core 2 are arranged in the heat exchange core 2 in a staggered manner, so as to improve the heat exchange efficiency of the air flow in the two flow channels.
As a specific embodiment, preferably, the indoor return air duct includes a return air upstream section 321 for the indoor return air inlet 311 and a return air downstream section 322 for the indoor return air outlet 312, where the return air upstream section 321 and the return air downstream section 322 are communicated through the first flow channel; and/or, the fresh air duct comprises a fresh air upstream section 341 aiming at the outdoor fresh air inlet 331 and a fresh air downstream section 342 aiming at the outdoor fresh air outlet 332, and the fresh air upstream section 341 and the fresh air downstream section 342 are communicated through the second flow channel. It will be appreciated that the aforementioned return air upstream section 321 and return air downstream section 322 and the fresh air upstream section 341 and fresh air downstream section 342 are all defined by the location of the heat exchange core 2.
In order to facilitate the control of the penetration or interception of the indoor return air duct, the fresh air duct, the first flow channel and the second flow channel, preferably, a first air valve 41 and a second air valve 42 are provided in the return air upstream section 321, the first air valve 41 has a first penetration position for penetrating the return air upstream section 321 and the fresh air downstream section 342, and a first interception position for intercepting the return air upstream section 321 and the fresh air downstream section 342, and the second air valve 42 has a second penetration position for penetrating the return air upstream section 321 and the fresh air upstream section 341, and a second interception position for intercepting the return air upstream section 321 and the fresh air upstream section 341. Further, the outdoor fresh air inlet 331 and the outdoor fresh air outlet 332 are respectively provided with a third air valve 43 and a fourth air valve 44, and the penetration or the cutoff of the outdoor fresh air inlet 331 and the outdoor fresh air outlet 332 is controlled respectively. The first air valve 41, the second air valve 42, the third air valve 43 and the fourth air valve 44 are preferably electric control type air valves, and the specific structure types can be consistent, preferably, the first air valve 41 and the second air valve 42 are rotary air valves, and the third air valve 43 and the fourth air valve 44 are shutter air valves, so as to simultaneously control fresh air inlet quantity.
At least one of the outdoor fresh air inlet 331, the outdoor fresh air outlet 332, and the indoor return air inlet 311 is correspondingly provided with a filter element 51, the filter element 51 can adopt the same filter element such as a coarse filter screen, and a high-efficiency filter screen is preferably adopted for the filter element 51 at the outdoor fresh air outlet 332 so as to ensure the indoor quality of fresh air; and/or, the indoor return air upstream section 321, the fresh air upstream section 341 and the fresh air downstream section 342 are all provided with temperature and humidity detection devices 52, the temperature and humidity detection devices 52 are all provided with conventional temperature and humidity sensors, and the temperature and humidity detection devices are arranged to enable the air conditioner to automatically judge whether a drying mode of the heat exchange core needs to be started according to the difference between the temperature and humidity of the indoor return air and the temperature and humidity of the outdoor fresh air, for example, when the difference between the temperature value and the humidity value detected by the temperature and humidity sensors of the indoor return air upstream section 321 and the temperature value and the humidity value detected by the temperature and humidity sensors of the fresh air upstream section 341 is too large, at this time, condensation or frosting is likely to exist on the heat exchange core 2, and the drying mode of the air conditioner automatic operation heat exchange core is controlled.
It can be appreciated that the fresh air conditioner indoor unit further includes a heat exchanger 6, where the heat exchanger 6 is disposed corresponding to the outdoor fresh air outlet 332 on the indoor side, so as to heat the incoming fresh air to raise the temperature of the fresh air entering the room, thereby preventing the temperature from being too low to affect the indoor temperature and reduce the comfort of the user, and preferably, the heat exchanger 6 is disposed in the fresh air downstream section 342 to adjust the temperature of the fresh air flow in the fresh air downstream section 342, at this time, the first air valve 41 is preferably disposed in the first through position, and the indoor return air flow enters the heat exchange core of the heat exchanger 6 after passing through the return air upstream section 321, exchanges heat, and then enters the second flow channel, so as to raise the temperature of the indoor return air, and further improve the drying effect of the heat exchange core 2.
Preferably, as shown in fig. 6, the fresh air conditioner indoor unit further includes an electric heating device 8, where the electric heating device 8 is located in the fresh air downstream section 342, so as to heat the indoor return air flow when the air conditioner is in the heat exchange core drying mode, thereby improving the drying effect, and this mode is especially suitable for a case where the fresh air conditioner is a single-cooled fresh air conditioner, and at this time, the fresh air conditioner can also perform necessary fresh air temperature lifting or indoor return air drying when the temperature is low.
It will be appreciated that the fresh air conditioner indoor unit further includes an indoor return air blower 71, and the indoor return air blower 71 is disposed adjacent to the indoor return air outlet 312; and/or, a fresh air fan 72, the fresh air fan 72 being disposed adjacent to the outdoor fresh air outlet 332.
The invention also provides a fresh air conditioner, which comprises an air conditioner indoor unit 100 and an air conditioner outdoor unit 200, wherein the air conditioner indoor unit 100 is the fresh air conditioner indoor unit, the air conditioner outdoor unit 200 generally comprises a compressor 201, an outdoor heat exchanger 202 and a throttling element 203, and the compressor 201, the outdoor heat exchanger 202 and the throttling element 203 are sequentially connected between an inlet and an outlet of the heat exchanger 6 in a pipeline manner. Preferably, as shown in fig. 5, the outdoor unit 200 further includes a four-way valve 204 to provide the air conditioner with a dual conditioning function for cooling and heating, which is a conventional technology of the air conditioner, and the present invention is not particularly limited. In addition, the outdoor side of the air conditioner can be replaced by other cold sources or heat sources, such as a water chiller.
The invention also provides a control method of the fresh air conditioner, which is used for controlling the fresh air conditioner and comprises the following steps:
acquiring an operation mode of an air conditioner;
and controlling the penetration or cutoff of the fresh air duct and the indoor return air duct with the first runner and the second runner according to the acquired operation mode, and controlling the start and stop of the indoor return air fan 71 and/or the outdoor fresh air fan 72.
Specifically, as shown in fig. 2, when the operation mode is the heat exchange core drying mode, the first air valve 41 is controlled to be at the first through position, the second air valve 42 is controlled to be at the second through position, the third air valve 43 and the fourth air valve 44 are controlled to be cut off, the indoor return air fan 71 is controlled to be turned on, and the outdoor fresh air fan 72 is controlled not to be turned on or to stop operation;
or as shown in fig. 4, when the operation mode is the fresh air mode, the first air valve 41 is controlled to be at the first cut-off position, the second air valve 42 is controlled to be at the second cut-off position, the third air valve 43 and the fourth air valve 44 are controlled to be communicated, and the indoor return air fan 71 and the outdoor fresh air fan 72 are controlled to be both opened;
alternatively, as shown in fig. 3, when the operation mode is the circulating air mode, the first air valve 41 is controlled to be at the first cut-off position, the second air valve 42 is controlled to be at the second pass-through position, the third air valve 43 is controlled to be cut off, the fourth air valve 44 is controlled to be passed through, the indoor return air fan 71 is controlled not to be started or stopped, and the outdoor fresh air fan 72 is controlled to be started.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (8)
1. The fresh air conditioner indoor unit is characterized by comprising an air conditioner shell (1), wherein a heat exchange core (2), a fresh air duct and an indoor return air duct are arranged in the air conditioner shell (1), a first runner and a second runner are formed in the heat exchange core (2), the first runner and the second runner are arranged independently, and air flows respectively arranged in the first runner and the second runner can exchange heat with each other, and when the heat exchange core (2) needs to be dried, the return air flow in the indoor return air duct can be sequentially led into the second runner and the first runner and discharged outdoors from the indoor return air duct; the indoor return air duct comprises a return air upstream section (321) aiming at an indoor return air inlet (311) and a return air downstream section (322) aiming at an indoor return air outlet (312), and the return air upstream section (321) and the return air downstream section (322) are communicated through the first flow channel; the fresh air duct comprises a fresh air upstream section (341) aiming at an outdoor fresh air inlet (331) and a fresh air downstream section (342) aiming at an outdoor fresh air outlet (332), and the fresh air upstream section (341) and the fresh air downstream section (342) are communicated through the second flow channel; a first air valve (41) and a second air valve (42) are arranged in the return air upstream section (321), the first air valve (41) is provided with a first through position for enabling the return air upstream section (321) to be communicated with the fresh air downstream section (342) and a first cut-off position for enabling the return air upstream section (321) to be cut off from the fresh air downstream section (342), and the second air valve (42) is provided with a second through position for enabling the return air upstream section (321) to be communicated with the fresh air upstream section (341) and a second cut-off position for enabling the return air upstream section (321) to be cut off from the fresh air upstream section (341); and the outdoor fresh air inlet (331) and the outdoor fresh air outlet (332) are respectively provided with a third air valve (43) and a fourth air valve (44), and the penetration or the cutoff of the outdoor fresh air inlet (331) and the outdoor fresh air outlet (332) is respectively controlled.
2. The fresh air conditioner indoor unit according to claim 1, wherein at least one of the outdoor fresh air inlet (331), the outdoor fresh air outlet (332) and the indoor return air inlet (311) is correspondingly provided with a filter (51); and/or, the air return upstream section (321), the fresh air upstream section (341) and the fresh air downstream section (342) are all provided with temperature and humidity detection devices (52).
3. The fresh air conditioner indoor unit according to claim 1, further comprising a heat exchanger (6), the heat exchanger (6) being disposed in the fresh air downstream section (342) to adjust a fresh air flow temperature in the fresh air downstream section (342).
4. A fresh air conditioner indoor unit according to claim 3, further comprising an electrical heating device (8), the electrical heating device (8) being in the fresh air downstream section (342).
5. Fresh air conditioner indoor unit according to claim 1, further comprising an indoor return air fan (71), the indoor return air fan (71) being arranged adjacent to the indoor return air outlet (312); and/or, still include new trend fan (72), new trend fan (72) are adjacent outdoor new trend export (332) setting.
6. A fresh air conditioner comprising an air conditioning indoor unit (100), characterized in that the air conditioning indoor unit (100) is a fresh air conditioning indoor unit according to any one of claims 1 to 5.
7. A control method of a fresh air conditioner for controlling the fresh air conditioner of claim 6, comprising the steps of:
acquiring an operation mode of an air conditioner;
and controlling the penetration or cutoff of the fresh air duct and the indoor return air duct with the first runner and the second runner according to the acquired operation mode, and controlling the start and stop of the indoor return air fan (71) and/or the outdoor fresh air fan (72).
8. The control method according to claim 7, wherein,
when the operation mode is a heat exchange core drying mode, the first air valve (41) is controlled to be in a first through position, the second air valve (42) is controlled to be in a second through position, the third air valve (43) and the fourth air valve (44) are controlled to be cut off, the indoor return air fan (71) is controlled to be started, and the outdoor fresh air fan (72) is controlled not to be started or to stop operation; or when the operation mode is the full fresh air mode, the first air valve (41) is controlled to be at a first cut-off position, the second air valve (42) is controlled to be at a second cut-off position, the third air valve (43) and the fourth air valve (44) are controlled to be communicated, and the indoor return air fan (71) and the outdoor fresh air fan (72) are controlled to be both opened; or when the operation mode is the circulating air mode, the first air valve (41) is controlled to be in a first cut-off position, the second air valve (42) is controlled to be in a second through position, the third air valve (43) is controlled to be cut off, the fourth air valve (44) is controlled to be through, the indoor return air fan (71) is controlled not to be started or stopped to operate, and the outdoor fresh air fan (72) is controlled to be started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911248160.7A CN111076302B (en) | 2019-12-09 | 2019-12-09 | Fresh air conditioner indoor unit, fresh air conditioner and control method of fresh air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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