WO2021169087A1 - Duct-type air conditioner and operation control method therefor, and device - Google Patents

Duct-type air conditioner and operation control method therefor, and device Download PDF

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Publication number
WO2021169087A1
WO2021169087A1 PCT/CN2020/096343 CN2020096343W WO2021169087A1 WO 2021169087 A1 WO2021169087 A1 WO 2021169087A1 CN 2020096343 W CN2020096343 W CN 2020096343W WO 2021169087 A1 WO2021169087 A1 WO 2021169087A1
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Prior art keywords
outdoor
air
indoor
temperature
grille
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PCT/CN2020/096343
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French (fr)
Chinese (zh)
Inventor
任善军
徐艳荣
远义忠
毛守博
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青岛海尔空调电子有限公司
海尔智家股份有限公司
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Publication of WO2021169087A1 publication Critical patent/WO2021169087A1/en

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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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • 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
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • 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
    • 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
    • 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]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to the technical field of air conditioners, in particular to a duct type air conditioner and an operation control method and device thereof.
  • Air conditioner is a device that can adjust the temperature, humidity and other parameters of the ambient air in the building.
  • the operation mode of the air conditioner usually mainly includes heating mode and cooling mode. For example, in summer, the cooling mode is used to reduce the indoor temperature, and the heating mode is used in winter to increase the indoor temperature.
  • the air-conditioning low-pressure system (the air-conditioning low-pressure system is located behind the throttle valve in the refrigerant pipeline) has increased pressure, resulting in a smaller pressure difference between the air-conditioning high-pressure system and the air-conditioning low-pressure system (the pressure difference before and after the throttle becomes smaller), resulting in the refrigerant pipeline
  • the circulation flow rate of the intermediate refrigerant becomes smaller, which in turn leads to the deterioration of the cooling effect of the air conditioner, which cannot meet the cooling requirements of "places with high indoor temperature and low outdoor temperature".
  • the present invention is proposed to provide a duct type air conditioner and its operation control that solves or at least partially solves the problem of how to meet the refrigeration requirements of places with high indoor temperature and low outdoor temperature (such as hot pot restaurants in winter) Methods and devices.
  • an operation control method of a duct type air conditioner includes:
  • the ducted air conditioner When the ducted air conditioner is running in the cooling mode, it will regularly detect the indoor temperature and outdoor temperature;
  • the temperature difference ⁇ T between the indoor temperature and the outdoor temperature determine whether to adjust the operation mode of the duct type air conditioner; if so, control the outdoor return air grille to open and adjust the cooling mode to the air supply mode, In order to use outdoor low-temperature air to cool indoor air;
  • the temperature difference ⁇ T T -T outdoor indoor, the outdoor T and T are the indoor temperature and the indoor outdoor temperature.
  • the indoor unit further includes an indoor return air grille, which is connected to the room through a duct, so that indoor air can enter the indoor unit through the indoor return air grille. road;
  • the indoor return air grille is controlled to open and the outdoor return air grille is closed, and then the indoor temperature and the outdoor temperature are periodically detected.
  • the step of "determining whether to adjust the operation mode of the ducted air conditioner according to the temperature difference ⁇ T between the indoor temperature and the outdoor temperature” specifically includes:
  • the preset opening value is less than the maximum opening of the indoor return air grille and the outdoor return air grille
  • the ⁇ T 1 and ⁇ T 2 are the preset lower limit of the temperature difference and the upper limit of the temperature difference, respectively.
  • the method further includes:
  • each temperature difference ⁇ T is less than the preset temperature difference threshold within the certain period of time, control the indoor return air grille to open and the outdoor return air grille to close, and then determine the outdoor unit of the duct type air conditioner Whether the compressor inside is in shutdown state;
  • the compressor If the compressor is in the shutdown state, continue to determine whether the shutdown duration of the compressor reaches the preset duration threshold; if so, adjust the air supply mode to the cooling mode; if not, then during the shutdown duration After reaching the preset duration threshold, the air supply mode is adjusted to the cooling mode.
  • the method further includes:
  • a control device in a second aspect, includes a processor and a storage device.
  • the storage device is adapted to store multiple pieces of program code, and the program code is adapted to be loaded and run by the processor to execute any of the foregoing.
  • a duct type air conditioner in a third aspect, includes an indoor unit and an outdoor unit; the indoor unit includes the control device according to claim 5, and an indoor return air grille, an outdoor return air grille, and A return air temperature sensor arranged in the air duct of the indoor unit; the outdoor unit includes a compressor and an outdoor temperature sensor; the indoor return air grille is connected to the room through a duct, so that indoor air can enter the room through the indoor return air grille Machine air duct; the outdoor return air grille is connected to the outdoors through a duct, so that outdoor air can enter the indoor unit air duct through the outdoor return air grille;
  • the control device is configured to detect an indoor temperature and an outdoor temperature through the return air temperature sensor and the outdoor temperature sensor, respectively, and perform operation control of the duct type air conditioner according to the detection result.
  • the indoor unit further includes an evaporator, a return grill driving device that drives the indoor return grill and the outdoor return grill to open/close, and drives the indoor unit Motor/fan for air flow in the air duct;
  • the motor/fan are both arranged on the front side of the evaporator; or,
  • the motor/fan are both arranged on the rear side of the evaporator.
  • the present invention when the duct type air conditioner is operating in the cooling mode, it is possible to periodically determine whether to adjust the operation mode of the duct type air conditioner according to the temperature difference ⁇ T between the indoor temperature and the outdoor temperature. If it is determined that the operation mode needs to be adjusted, the cooling mode is adjusted to the air supply mode and the outdoor low-temperature air is used to cool the indoor air. Since the compressor is in a shutdown state in the air supply mode, the present invention can not only achieve the purpose of refrigeration, but also avoid problems such as wear, aging, and shortened life of the compressor due to long-term operation.
  • the present invention in order to effectively use outdoor low-temperature air to cool indoor air, the present invention also improves the structure of the indoor unit of the duct type air conditioner.
  • an outdoor return air grille is provided in the indoor unit, and the outdoor return air grille is connected to the outdoors through a duct, so that outdoor air can enter the indoor unit air duct through the outdoor return air grille.
  • the outdoor return air grille is controlled to open, and then the cooling mode is adjusted to the air supply mode.
  • the outdoor cold air enters the room through the outdoor return air grille
  • the air duct of the indoor unit finally flows into the room through the air outlet of the air duct of the indoor unit to cool the room.
  • Fig. 1 is a schematic flow chart of main steps of an operation control method of a duct type air conditioner according to an embodiment of the present invention
  • Figure 2 is a schematic diagram of the main structure of a duct type air conditioner according to an embodiment of the present invention
  • Figure 3 is a schematic diagram of the main structure of a duct type air conditioner according to another embodiment of the present invention.
  • 11 evaporator; 12: motor/fan; 13: outdoor return air grille; 131: filter screen; 14: indoor return air grille; 15: return air temperature sensor; 2: outdoor unit; 3: wall.
  • module and “processor” may include hardware, software, or a combination of both.
  • a module can include hardware circuits, various suitable sensors, communication ports, and memory, and can also include software parts, such as program codes, or a combination of software and hardware.
  • the processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor, or any other suitable processor.
  • the processor has data and/or signal processing functions.
  • the processor can be implemented in software, hardware, or a combination of the two.
  • the non-transitory computer-readable storage medium includes any suitable medium that can store program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, and so on.
  • a and/or B means all possible combinations of A and B, such as only A, only B, or A and B.
  • the term “at least one of A or B” or “at least one of A and B” has a meaning similar to “A and/or B” and may include only A, only B, or A and B.
  • the terms “a”, “this”, and “some” in the singular form may also include plural forms.
  • the current traditional air-conditioning refrigeration operation method is mainly to adjust the speed of the outdoor fan and/or reduce the heat exchange area of the outdoor heat exchanger to make the temperature of the outdoor unit as much as possible when the outdoor ambient temperature is low. Increase the pressure of the air-conditioning high-pressure system as much as possible, thereby increasing the pressure difference between the air-conditioning high-pressure system and the air-conditioning low-pressure system, promoting the circulation flow of the refrigerant in the refrigerant pipeline to increase, and improving the cooling effect of the air-conditioning.
  • this method requires the outdoor unit to operate for a long time to reduce and maintain a better cooling effect.
  • the compressor and other components in the outdoor unit are prone to wear and aging under long-term operation, resulting in reduced component life.
  • the long-term operation of the compressor will also consume a large amount of electric energy, which cannot achieve the purpose of energy saving of the air conditioner.
  • the present invention when the duct type air conditioner is operating in the cooling mode, it can be periodically determined whether to adjust the operation mode of the duct type air conditioner according to the temperature difference ⁇ T between the indoor temperature and the outdoor temperature. If it is determined that the operation mode needs to be adjusted, the cooling mode is adjusted to the air supply mode and the outdoor low-temperature air is used to cool the indoor air. Since the compressor is in a shutdown state in the air supply mode, the present invention can not only achieve the purpose of refrigeration, but also avoid problems such as wear, aging and life reduction of the compressor due to long-term operation. In order to effectively use the outdoor low-temperature air to cool the indoor air, the present invention also improves the structure of the indoor unit of the duct type air conditioner.
  • an indoor return air grille and an outdoor return air grille are provided in the indoor unit.
  • the indoor return air grille is connected to the room through the air duct so that indoor air can enter the indoor unit air duct through the indoor return air grille;
  • the outdoor return air grille is connected to the outdoor through the air pipe so that outdoor air can enter the indoor unit air through the outdoor return air grille road.
  • the present invention first controls the outdoor return air grille to open, and then adjusts the cooling mode to the air supply mode. Under the drive of the air supply mode, the outdoor cold air enters through the outdoor return air grille
  • the indoor unit air duct finally flows into the room through the air outlet of the indoor unit air duct to cool the room.
  • Fig. 1 is a schematic flow chart of the main steps of a method for controlling the operation of a duct type air conditioner according to an embodiment of the present invention.
  • the indoor unit is provided with an indoor return air grille and an outdoor return air grille.
  • the indoor return air grille is connected to the room through the air duct so that indoor air can enter the indoor unit air duct through the indoor return air grille;
  • the outdoor return air grille is connected to the outdoor through the air pipe so that outdoor air can enter the indoor unit air through the outdoor return air grille road.
  • the operation control method of the duct type air conditioner in the embodiment of the present invention mainly includes the following steps:
  • Step S101 When the duct type air conditioner is operating in the cooling mode, the indoor temperature and the outdoor temperature are regularly detected.
  • the indoor temperature refers to the temperature in the place (building) where the indoor unit of the duct type air conditioner is located
  • the outdoor temperature refers to the temperature in the place (outside the building) where the indoor unit of the duct type air conditioner is located.
  • the indoor temperature and outdoor temperature can be detected according to the following steps: after the duct type air conditioner starts the cooling mode, the indoor return air grille is controlled to open and the outdoor return air grille is closed, and then the indoor temperature is detected at regular intervals (10 minutes apart). Temperature and outdoor temperature.
  • closing the outdoor return air grille can prevent outdoor cold air from flowing into the air duct of the indoor unit and affect the temperature measurement result of the temperature detection device. Further, opening the indoor return air grille can make the air temperature in the air duct of the indoor unit closer to the indoor air temperature, so that the temperature measurement result of the temperature detection device is closer to the indoor air temperature.
  • Step S102 Determine whether to adjust the operation mode of the duct type air conditioner according to the temperature difference between the indoor temperature and the outdoor temperature.
  • determining whether to adjust the operation mode of the duct type air conditioner according to the temperature difference ⁇ T between the indoor temperature and the outdoor temperature includes:
  • ⁇ T ⁇ T 1 continue to control the opening of the indoor return air grille and the closing of the outdoor return air grille, without adjusting the operating mode of the ducted air conditioner.
  • ⁇ T 1 is the preset lower limit of temperature difference
  • ⁇ T 1 is a small value
  • ⁇ T 1 >0 which means that the indoor temperature is relatively close to the outdoor temperature.
  • An example: ⁇ T 1 5°.
  • ⁇ T ⁇ T 1 includes two cases: ⁇ T ⁇ 0 and 0 ⁇ T ⁇ T 1. The following is a detailed description of why the operation mode of the duct type air conditioner is not adjusted in these two cases.
  • ⁇ T ⁇ 0 indicates that the air conditioner is in a summer cooling state
  • the outdoor return air grille is controlled to open, so that the fresh outdoor air can enter the indoor unit air duct through the outdoor air return grille, and then enter the room through the air outlet of the indoor unit air duct.
  • T indoor is greater than the outdoor temperature T outdoor . Since the indoor temperature is generally higher than the outdoor temperature in winter, this situation indicates that the air conditioner may be in a winter cooling state. However, because the indoor temperature is relatively close to the outdoor temperature, if the outdoor cold air is used to cool the indoors, a better cooling effect cannot be achieved, so there is no need to adjust the operation mode of the air conditioner.
  • ⁇ T 2 is the preset upper limit of temperature difference
  • ⁇ T 2 is a larger value
  • ⁇ T 2 > ⁇ T 1 which means that the indoor temperature and the outdoor temperature are quite different.
  • ⁇ T> ⁇ T 2 indicates that the indoor temperature T indoor is greater than the outdoor temperature T outdoor . Since the indoor temperature is generally higher than the outdoor temperature in winter, this situation indicates that the air conditioner may be in a winter cooling state. At the same time, since the outdoor temperature T is low outside , the outdoor cold air can be used to cool the indoors to achieve a better cooling effect. Specifically, by opening the outdoor return air grille first and then adjusting the cooling mode to the air supply mode, the outdoor cold air can be sent into the indoor air duct under the drive of the air supply mode, and then enter the room through the air outlet of the indoor unit air duct. Cool down the room. In addition, in order to further improve the cooling effect of the air supply mode, the opening of the outdoor return air grille can be adjusted to the maximum.
  • ⁇ T 1 < ⁇ T < ⁇ T 2 the opening of the indoor return air grille and the outdoor return air grille are adjusted to the preset opening values respectively, and the operation mode of the duct type air conditioner is not adjusted.
  • ⁇ T 1 and ⁇ T 2 are the preset lower limit of temperature difference and upper limit of temperature difference, respectively.
  • ⁇ T is between the lower limit of temperature difference and the upper limit of temperature difference, it indicates that although the indoor temperature is close to the outdoor temperature, there is still a certain gap. . If the outdoor cold air alone is used to cool the room, it may not achieve a better cooling effect.
  • the opening of the outdoor return air grille can be adjusted to a preset opening value (such as the maximum opening). Under the effect of the pressure difference between the indoor hot air and the outdoor cold air, the outdoor cold air can flow into the indoor air duct through the outdoor return air grille. Because the natural flow of outdoor cold air is much lower than the air supply mode Under the flow rate, this method can only achieve a certain auxiliary cooling effect, so it is necessary to control the air conditioner to continue to run in the cooling mode. At the same time, the opening degree of the indoor return air grille is also adjusted to a preset opening value (for example, half of the maximum opening degree), and the indoor temperature is cooled by using the indoor circulating air.
  • a preset opening value for example, half of the maximum opening degree
  • Step S103 controlling the outdoor return air grille to open and adjusting the cooling mode to the air supply mode.
  • Step S104 Control the duct type air conditioner to continue to operate in the cooling mode.
  • the embodiment of the present invention adjusts the operation mode of the duct type air conditioner according to the temperature difference ⁇ T between the indoor temperature and the outdoor temperature. If it is determined that the operation mode needs to be adjusted, the cooling mode is adjusted to the air supply mode and the outdoor low-temperature air is used to The indoor air is cooled down. Since the compressor is in a shutdown state in the air supply mode, the embodiment of the present invention can not only achieve the purpose of refrigeration, but also avoid problems such as wear, aging, and shortened life of the compressor due to long-term operation.
  • the outdoor return air grille when the outdoor return air grille is opened, it may further include the step of analyzing the cooling effect of using outdoor cold air cooling according to the temperature difference ⁇ T between the indoor temperature and the outdoor temperature, and then judging whether to close the outdoor return air grille according to the analysis result .
  • This step specifically includes:
  • Step 1 Determine whether the temperature difference ⁇ T between the indoor temperature and the outdoor temperature detected within a certain period of time is less than a preset temperature difference threshold.
  • the preset temperature difference threshold is a temperature value less than the preset temperature difference lower limit ⁇ T 1 .
  • An example: if ⁇ T 1 5°, the preset temperature difference threshold may be 3°.
  • each temperature difference ⁇ T is less than the preset temperature difference threshold for a certain period of time (the temperature difference ⁇ T is continuously smaller than the preset temperature difference threshold), it indicates that the indoor temperature is relatively close to the outdoor temperature. If you continue to use outdoor cold air to cool the room, cooling The effect will not be further improved, and you can go to step 2 at this time; if there is a certain temperature difference ⁇ T greater than or equal to the preset temperature difference threshold for a certain period of time (the temperature difference ⁇ T is not continuously smaller than the preset temperature difference threshold), it indicates that there is still There may be a large difference between the indoor temperature and the outdoor temperature. If you continue to use outdoor cold air to cool the room, the cooling effect will be further improved. At this time, you can go to step 5.
  • Step 2 Control the opening of the indoor return air grille and the closing of the outdoor return air grille, and determine whether the compressor in the outdoor unit of the duct type air conditioner is in a shutdown state. Specifically, if the compressor is in a stopped state, go to step 3; if the compressor is in a working state, go to step 4.
  • Step 3 From the foregoing analysis, it can be seen that if the compressor is in a shutdown state, it indicates that the duct type air conditioner is operating in the air supply mode. And because the temperature difference ⁇ T between the indoor temperature and the outdoor temperature for a certain period of time is continuously smaller than the preset temperature difference threshold, if the outdoor cold air is used to cool the indoor, the cooling effect will not be further improved, so the air supply mode needs to be adjusted to the cooling mode.
  • the compressor stop time reaches the preset time threshold; if it reaches, the compressor is started and The air supply mode is adjusted to the cooling mode; if it is not reached, the air supply mode is adjusted to the cooling mode after the shutdown duration reaches the preset duration threshold.
  • Step 4 From the foregoing analysis, it can be seen that if the compressor is not in a shutdown state, it indicates that the duct type air conditioner is still running in the cooling mode. And because the temperature difference ⁇ T between the indoor temperature and the outdoor temperature for a certain period of time is continuously smaller than the preset temperature difference threshold, if you continue to use outdoor cold air to cool the room, the cooling effect will not be further improved, so the outdoor return air grille needs to be closed, and the outdoor air return grille needs to be closed at the same time. Adjust the operating mode of the ducted air conditioner.
  • Step 5 From the foregoing analysis, it can be seen that if the temperature difference ⁇ T is not continuously smaller than the preset temperature difference threshold within a certain period of time, it indicates that there may be a large difference between the indoor temperature and the outdoor temperature. Continue to use outdoor cold air to cool the room. The effect will be further improved, so there is no need to close the outdoor return grille, and there is no need to adjust the operating mode of the ducted air conditioner. For example: In the ⁇ T> ⁇ T 2 where, the duct type air conditioner continues to operate in the blowing mode; ⁇ T 1 ⁇ T ⁇ T 2 in the case of the duct type air conditioner continues to operate in the cooling mode.
  • the indoor return air grille when the ducted air conditioner is operating in heating mode, can be controlled to open and the outdoor return air grille to close, so as to prevent outdoor air from entering the indoor unit duct through the outdoor return air grille and affecting the control of the air conditioner. Thermal effect.
  • the outdoor return air grille when a fresh air instruction is received, indicating that the user has fresh air demand, can be controlled to open according to the fresh air instruction, so that outdoor fresh air can enter the indoor unit air duct through the outdoor return air grille, and then pass through the indoor unit air duct The air outlet enters the room to meet the fresh air demand of users.
  • a control device is also provided.
  • the control device may include a processor and a storage device, and the storage device is adapted to store multiple pieces of program code, and the program code is adapted to be loaded and run by the processor to execute the operation of the above-mentioned duct type air conditioner.
  • the specific steps of the operation control method of the duct type air conditioner described in the control method embodiment are shown. For specific technical details that are not disclosed, please refer to the method part of the embodiments of this specification.
  • the control device may be a server device formed by various electronic devices, a PC computer, a network cloud server, and the like.
  • a duct type air conditioner may include an indoor unit and an outdoor unit.
  • the indoor unit includes the control device described in the aforementioned control device, an indoor return air grille, an outdoor return air grille, and a return air temperature sensor arranged in the air duct of the indoor unit.
  • the outdoor unit may include a compressor and an outdoor temperature sensor.
  • the indoor return air grille is connected to the room through a duct so that indoor air can enter the indoor air duct through the indoor return air grille; the outdoor return air grille is connected to the outdoors through a duct so that outdoor air can pass through the outdoor return air grille Enter the indoor unit air duct.
  • the control device may be configured to detect the indoor temperature and the outdoor temperature through the return air temperature sensor and the outdoor temperature sensor, respectively, and perform operation control of the duct type air conditioner according to the detection result.
  • FIG. 2 is a schematic diagram of the main structure of a duct type air conditioner according to an embodiment of the present invention.
  • the duct type air conditioner includes an indoor unit and an outdoor unit 2.
  • the indoor unit may specifically include an evaporator 11, a motor/fan 12, an outdoor return air grill 13, an indoor return air grill 14, and a return air temperature sensor 15.
  • the air duct of the indoor unit air duct passes through the outdoor air return grill 13 and enters the outdoor through the wall 3.
  • a filter screen 131 is provided on the inner side of the outdoor air return grill 13 (on the side close to the wall 3), and the filter screen 131 can filter out impurities such as dust, particles, etc. contained in the outdoor air.
  • the arrow " ⁇ " indicates the air flow direction in the air duct of the indoor unit.
  • the air flow direction mainly includes the flow from the outdoor air return grille 13 to the motor/fan 12, the return air temperature sensor 15 and the evaporator 11, and the indoor return air grille 14 in turn Flow to the motor/fan 12, the return air temperature sensor 15 and the evaporator 11.
  • the motor/fan 12 mainly includes a blower motor and a fan.
  • the blower motor is used to drive the fan to rotate so as to blow the air flowing in from the outdoor return air grill 13 and the indoor return air grill 14 into the air duct of the indoor unit. .
  • the temperature of the evaporator 11 will be relatively high, so that the temperature of the air flowing through the evaporator 11 will also increase. If the motor/fan 12 is installed on the back side of the evaporator 11 (in the front-to-back direction of the air flow in the indoor unit air duct), the high-temperature air may affect the normal operation of the motor/fan 12 (such as overheating) ).
  • the embodiment of the present invention arranges the motor/fan 12 on the front side of the evaporator 11 along the air flow in the indoor unit air duct from front to back, so as to ensure that the motor /Fan 12 can operate normally in heating mode.
  • the evaporator 11 has a relatively large resistance and generates a lot of noise.
  • the air duct of the indoor unit may be relatively long (for example, the indoor space is large), so if the motor/fan 12 is arranged on the front side of the evaporator 11, it may not be able to drive the air to the outlet of the indoor unit duct. tuyere. Therefore, after considering the above problems, the installation position of the motor/fan 12 can be selected according to the application scenario of the duct type air conditioner.
  • the motor/fan 12 can be arranged on the front side of the evaporator 11 (along the air duct in the indoor unit). The direction of flow from front to back).
  • the motor/fan 12 can be arranged on the rear side of the evaporator 11 (as shown in Figure 3, along the indoor unit The air flow in the air duct is from front to back, and the motor/fan 12 is arranged on the rear side of the evaporator 11).
  • the indoor unit of the duct type air conditioner further includes a return air grill driving device (not shown in Figure 2), which is used to drive the outdoor return air grill 13 and the indoor return air grill 14 Open and close.
  • the return air grille driving device may include an outdoor return air grille drive module and an indoor return air grille drive module.
  • the outdoor return air grille drive module is used to drive the outdoor return air grille 13 to open and close, and the indoor return air grille
  • the driving module is used to drive the indoor return air grille 14 to open and close.
  • the outdoor return air grid drive module and the indoor return air grid drive module each include a stepping motor, and the corresponding return air grid is driven to open and close by the stepping motor.
  • the computer program includes computer program code
  • the computer program code may be in the form of source code, object code, executable file, or some intermediate forms.
  • the computer-readable medium may include: any entity or device, medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory, random access memory, and electrical carrier signal that can carry the computer program code. , Telecommunications signals and software distribution media, etc.
  • the content contained in the computer-readable medium can be appropriately added or deleted according to the requirements of the legislation and patent practice in the jurisdiction.
  • the computer-readable medium Does not include electrical carrier signals and telecommunication signals.
  • the embodiment of the present invention provides a method for operating a duct type air conditioner.
  • the duct type air conditioner When the duct type air conditioner is operating in the cooling mode, it can be periodically determined according to the temperature difference ⁇ T between the indoor temperature and the outdoor temperature to determine whether to adjust the operation mode of the duct type air conditioner . If it is determined that the operation mode needs to be adjusted, the cooling mode is adjusted to the air supply mode and the outdoor low-temperature air is used to cool the indoor air. Since the compressor is in a shutdown state in the air supply mode, the embodiment of the present invention can not only achieve the purpose of refrigeration, but also avoid problems such as compressor wear, aging, and shortened life due to long-term operation of the compressor.

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Abstract

The present invention relates to the technical field of air conditioners, and specifically provides a duct-type air conditioner and an operation control method therefor, and a device, aiming at solving the problem of how to meet refrigeration requirements of places having a high indoor temperature and a low outdoor temperature. On this basis, embodiments of the present invention provide an operation method for the duct-type air conditioner, which can determine, according to a temperature difference Δt between the indoor temperature and the outdoor temperature when the duct-type air conditioner operates in a refrigeration mode, whether to adjust an operation mode of the duct-type air conditioner regularly. If it is determined that the operation mode needs to be adjusted, the refrigeration mode is adjusted to an air supply mode and the indoor air is cooled by utilizing the outdoor low-temperature air. Since a compressor is in a shutdown state in the air supply mode, the method in the embodiments of the present invention can meet refrigeration requirements of places having a high indoor temperature and a low outdoor temperature, and can also avoid the problems of abrasion, aging, shortening of service life and the like caused by long-time operation of the compressor.

Description

风管式空调器及其运行控制方法、装置Duct type air conditioner and its operation control method and device 技术领域Technical field
本发明涉及空调技术领域，具体涉及一种风管式空调器及其运行控制方法、装置。The invention relates to the technical field of air conditioners, in particular to a duct type air conditioner and an operation control method and device thereof.
背景技术Background technique
空调(Air Conditioner)是一种能够调节建筑内环境空气的温度、湿度等参数的设备，空调的运行模式通常主要包括制热模式和制冷模式。例如：在夏季时采用制冷模式降低室内温度，在冬季时采用制热模式升高室内温度。但是，对于一些室内温度高室外温度低的场所(例如冬季的火锅店)的制冷需求，由于空调内冷媒管路的压力受环境温度影响，温度越高冷媒管路的压力越高，温度越低冷媒管路的压力越低，因此在“室内温度高室外温度低的场所”内，处于室外的空调高压系统(空调高压系统位于冷媒管路中节流阀前侧)压力变低，处于室内的空调低压系统(空调低压系统位于冷媒管路中节流阀后侧)压力变高，致使空调高压系统与空调低压系统的压差变小(节流阀前后压差变小)，导致冷媒管路中冷媒的循环流量变小，进而导致空调制冷效果变差，无法满足“室内温度高室外温度低的场所”的制冷需求。Air conditioner (Air Conditioner) is a device that can adjust the temperature, humidity and other parameters of the ambient air in the building. The operation mode of the air conditioner usually mainly includes heating mode and cooling mode. For example, in summer, the cooling mode is used to reduce the indoor temperature, and the heating mode is used in winter to increase the indoor temperature. However, for the refrigeration requirements of some places with high indoor temperature and low outdoor temperature (such as hot pot restaurants in winter), because the pressure of the refrigerant pipeline in the air conditioner is affected by the ambient temperature, the higher the temperature, the higher the pressure of the refrigerant pipeline, and the lower the temperature The lower the pressure of the refrigerant pipeline, the lower the pressure of the high-pressure air-conditioning system outside (the air-conditioning high-pressure system is located in front of the throttle valve in the refrigerant pipeline) in the "places with high indoor temperature and low outdoor temperature". The air-conditioning low-pressure system (the air-conditioning low-pressure system is located behind the throttle valve in the refrigerant pipeline) has increased pressure, resulting in a smaller pressure difference between the air-conditioning high-pressure system and the air-conditioning low-pressure system (the pressure difference before and after the throttle becomes smaller), resulting in the refrigerant pipeline The circulation flow rate of the intermediate refrigerant becomes smaller, which in turn leads to the deterioration of the cooling effect of the air conditioner, which cannot meet the cooling requirements of "places with high indoor temperature and low outdoor temperature".
相应地，本领域需要一种新的空调方案来解决上述问题。Correspondingly, a new air conditioning solution is needed in the art to solve the above-mentioned problems.
发明内容Summary of the invention
为了克服上述缺陷，提出了本发明，以提供解决或至少部分地解决如何满足室内温度高室外温度低的场所(例如冬季的火锅店)的制冷需求的问题的风管式空调器及其运行控制方法、装置。In order to overcome the above shortcomings, the present invention is proposed to provide a duct type air conditioner and its operation control that solves or at least partially solves the problem of how to meet the refrigeration requirements of places with high indoor temperature and low outdoor temperature (such as hot pot restaurants in winter) Methods and devices.
第一方面，提供一种风管式空调器的运行控制方法，所述风管式空调器的室内机包括室外回风栅，所述室外回风栅通过风管接入室外，以便室外空气能够通过所述室外回风栅进入室内机风道；所述运行控制方法包括：In a first aspect, an operation control method of a duct type air conditioner is provided. The indoor unit of the duct type air conditioner includes an outdoor return air grille, and the outdoor return air grille is connected to the outdoors through a duct so that the outdoor air can be Enter the indoor unit air duct through the outdoor return air grill; the operation control method includes:
当风管式空调器运行在制冷模式时，定时检测室内温度与室外温度；When the ducted air conditioner is running in the cooling mode, it will regularly detect the indoor temperature and outdoor temperature;
根据所述室内温度与室外温度的温度差ΔT，判断是否调整所述风管式空调器的运行模式；若是，则控制所述室外回风栅打开并且将所述制冷模式调整为送风模式，以便利用室外的低温空气对室内空气进行降温；According to the temperature difference ΔT between the indoor temperature and the outdoor temperature, determine whether to adjust the operation mode of the duct type air conditioner; if so, control the outdoor return air grille to open and adjust the cooling mode to the air supply mode, In order to use outdoor low-temperature air to cool indoor air;
其中，所述温度差ΔT＝T 室内-T 室外，所述T 室内和T 室外分别是室内温度与室外温度。 Wherein the temperature difference ΔT = T -T outdoor indoor, the outdoor T and T are the indoor temperature and the indoor outdoor temperature.
在上述运行控制方法的一个实施方式中，所述室内机还包括室内回风栅，所述室内回风栅通过风管接入室内，以便室内空气能够通过所述室内回风栅进入室内机风道；In one embodiment of the above-mentioned operation control method, the indoor unit further includes an indoor return air grille, which is connected to the room through a duct, so that indoor air can enter the indoor unit through the indoor return air grille. road;
“当风管式空调器运行在制冷模式时，定时检测室内温度与室外温度”的步骤具体包括："When the ducted air conditioner is running in the cooling mode, periodically detect the indoor temperature and outdoor temperature" steps specifically include:
在风管式空调器启动制冷模式后，控制所述室内回风栅打开以及所述室外回风栅关闭，随后定时检测室内温度与室外温度。After the duct type air conditioner starts the cooling mode, the indoor return air grille is controlled to open and the outdoor return air grille is closed, and then the indoor temperature and the outdoor temperature are periodically detected.
在上述运行控制方法的一个实施方式中，“根据所述室内温度与室外温度的温度差ΔT，判断是否调整所述风管式空调器的运行模式”的步骤具体包括：In one embodiment of the above-mentioned operation control method, the step of "determining whether to adjust the operation mode of the ducted air conditioner according to the temperature difference ΔT between the indoor temperature and the outdoor temperature" specifically includes:
若ΔT＜ΔT 1，则继续控制所述室内回风栅打开以及所述室外回风栅关闭，不调整所述风管式空调器的运行模式； If ΔT<ΔT 1 , continue to control the indoor return air grille to open and the outdoor return air grille to close, without adjusting the operating mode of the duct type air conditioner;
若ΔT＞ΔT 2，则控制所述室内回风栅关闭以及所述室外回风栅打开，随后将所述制冷模式调整为送风模式； If ΔT>ΔT 2 , control the indoor return air grille to close and the outdoor return air grille to open, and then adjust the cooling mode to the air supply mode;
若ΔT 1＜ΔT＜ΔT 2，则将所述室内回风栅与室外回风栅的开度分别调整至预设开度值，不调整所述风管式空调器的运行模式； If ΔT 1 &lt; ΔT &lt; ΔT 2 , adjust the opening degrees of the indoor return air grille and the outdoor return air grille to preset opening values respectively, and do not adjust the operating mode of the duct type air conditioner;
其中，所述预设开度值小于所述室内回风栅与室外回风栅的最大开度，所述ΔT 1和ΔT 2分别是预设的温差下限和温差上限。 Wherein, the preset opening value is less than the maximum opening of the indoor return air grille and the outdoor return air grille, and the ΔT 1 and ΔT 2 are the preset lower limit of the temperature difference and the upper limit of the temperature difference, respectively.
在上述运行控制方法的一个实施方式中，在所述室外回风栅打开后，所述方法还包括：In an embodiment of the foregoing operation control method, after the outdoor return air grille is opened, the method further includes:
判断在一定时长内检测到的室内温度与室外温度的温度差ΔT是否均小于预设的温差阈值；Determine whether the temperature difference ΔT between the indoor temperature and the outdoor temperature detected within a certain period of time is less than a preset temperature difference threshold;
若在所述一定时长内每个温度差ΔT均小于预设的温差阈值，则控制所述室内回风栅打开以及所述室外回风栅关闭，随后判断所述风管式空调器的室外机内的压缩机是否处于停机状态；If each temperature difference ΔT is less than the preset temperature difference threshold within the certain period of time, control the indoor return air grille to open and the outdoor return air grille to close, and then determine the outdoor unit of the duct type air conditioner Whether the compressor inside is in shutdown state;
若所述压缩机处于停机状态，则继续判断所述压缩机的停机 时长是否达到预设的时长阈值；若是，则将所述送风模式调整为制冷模式；若否，则在所述停机时长达到预设的时长阈值之后，再将所述送风模式调整为制冷模式。If the compressor is in the shutdown state, continue to determine whether the shutdown duration of the compressor reaches the preset duration threshold; if so, adjust the air supply mode to the cooling mode; if not, then during the shutdown duration After reaching the preset duration threshold, the air supply mode is adjusted to the cooling mode.
在上述运行控制方法的一个实施方式中，当ΔT＜0时，判断是否接收到新风指令；若是，则根据所述新风指令控制所述室外回风栅打开。In one embodiment of the above-mentioned operation control method, when ΔT<0, it is determined whether a fresh air instruction is received; if so, the outdoor return air grille is controlled to open according to the fresh air instruction.
在上述运行控制方法的一个实施方式中，所述方法还包括：In an embodiment of the above-mentioned operation control method, the method further includes:
当风管式空调器运行在制热模式时，控制所述室内回风栅打开以及所述室外回风栅关闭；When the duct type air conditioner is operating in the heating mode, controlling the indoor return air grille to open and the outdoor return air grille to close;
判断是否接收到新风指令；若是，则根据所述新风指令控制所述室外回风栅打开。It is determined whether a fresh air instruction is received; if so, the outdoor return air grille is controlled to open according to the fresh air instruction.
第二方面，提供一种控制装置，该控制装置包括处理器和存储装置，所述存储装置适于存储多条程序代码，所述程序代码适于由所述处理器加载并运行以执行上述任一项实施方式所述的风管式空调器的运行控制方法。In a second aspect, a control device is provided. The control device includes a processor and a storage device. The storage device is adapted to store multiple pieces of program code, and the program code is adapted to be loaded and run by the processor to execute any of the foregoing. An operation control method of a duct type air conditioner according to an embodiment.
第三方面，提供一种风管式空调器，该风管式空调器包括室内机和室外机；所述室内机包括权利要求5所述的控制装置以及室内回风栅、室外回风栅与设置在室内机风道内的回风温度传感器；所述室外机包括压缩机与室外温度传感器；所述室内回风栅通过风管接入室内，以便室内空气能够通过所述室内回风栅进入室内机风道；所述室外回风栅通过风管接入室外，以便室外空气能够通过所述室外回风栅进入室内机风道；In a third aspect, a duct type air conditioner is provided. The duct type air conditioner includes an indoor unit and an outdoor unit; the indoor unit includes the control device according to claim 5, and an indoor return air grille, an outdoor return air grille, and A return air temperature sensor arranged in the air duct of the indoor unit; the outdoor unit includes a compressor and an outdoor temperature sensor; the indoor return air grille is connected to the room through a duct, so that indoor air can enter the room through the indoor return air grille Machine air duct; the outdoor return air grille is connected to the outdoors through a duct, so that outdoor air can enter the indoor unit air duct through the outdoor return air grille;
所述控制装置被配置成分别通过所述回风温度传感器与所述室外温度传感器检测室内温度与室外温度并且根据检测结果进行风管式空调器的运行控制。The control device is configured to detect an indoor temperature and an outdoor temperature through the return air temperature sensor and the outdoor temperature sensor, respectively, and perform operation control of the duct type air conditioner according to the detection result.
在上述风管式空调器的一个实施方式中，所述室内机还包括蒸发器、驱动所述室内回风栅以及室外回风栅打开/关闭的回风栅驱动装置，以及驱动所述室内机风道内空气流动的电机/风扇；In one embodiment of the above-mentioned duct type air conditioner, the indoor unit further includes an evaporator, a return grill driving device that drives the indoor return grill and the outdoor return grill to open/close, and drives the indoor unit Motor/fan for air flow in the air duct;
在沿着所述室内机风道内空气流动由前至后的方向上，所述电机/风扇均设置在所述蒸发器的前侧；或者，In a front-to-back direction along the air flow in the indoor unit air duct, the motor/fan are both arranged on the front side of the evaporator; or,
在沿着所述室内机风道内空气流动由前至后的方向上，所述电机/风扇均设置在所述蒸发器的后侧。In a front-to-rear direction along the air flow in the indoor unit air duct, the motor/fan are both arranged on the rear side of the evaporator.
本发明上述一个或多个技术方案，至少具有如下一种或多种有益效果：The above one or more technical solutions of the present invention have at least one or more of the following beneficial effects:
在实施本发明的技术方案中，当风管式空调器运行在制冷模式时可以定时地根据室内温度与室外温度的温度差ΔT，判断是否调整风管式空调器的运行模式。如果判断为需要调整运行模式，则将制冷模式调整为送风模式并利用室外的低温空气对室内空气进行降温。由于在送风模式下压缩机处于停机状态，因而本发明既可以达到制冷的目的，还可以避免压缩机由于长时间运行，导致的磨损、老化、寿命减短等问题。In implementing the technical solution of the present invention, when the duct type air conditioner is operating in the cooling mode, it is possible to periodically determine whether to adjust the operation mode of the duct type air conditioner according to the temperature difference ΔT between the indoor temperature and the outdoor temperature. If it is determined that the operation mode needs to be adjusted, the cooling mode is adjusted to the air supply mode and the outdoor low-temperature air is used to cool the indoor air. Since the compressor is in a shutdown state in the air supply mode, the present invention can not only achieve the purpose of refrigeration, but also avoid problems such as wear, aging, and shortened life of the compressor due to long-term operation.
进一步，在实施本发明的技术方案中，为了能够有效利用室外的低温空气对室内空气进行降温，本发明还对风管式空调器的室内机做了结构改进。具体而言，在室内机内设置室外回风栅，室外回风栅通过风管接入室外，以便室外空气能够通过室外回风栅进入室内机风道。在判断出需要将制冷模式调整为送风模式时，先控制室外回风栅打开，再将制冷模式调整为送风模式，在送风模式的驱动下，室外冷空气通过室外回风栅进入室内机风道，最后通过室内机风道的出风口流入室内，对室内进行降温。Furthermore, in implementing the technical solution of the present invention, in order to effectively use outdoor low-temperature air to cool indoor air, the present invention also improves the structure of the indoor unit of the duct type air conditioner. Specifically, an outdoor return air grille is provided in the indoor unit, and the outdoor return air grille is connected to the outdoors through a duct, so that outdoor air can enter the indoor unit air duct through the outdoor return air grille. When it is judged that the cooling mode needs to be adjusted to the air supply mode, the outdoor return air grille is controlled to open, and then the cooling mode is adjusted to the air supply mode. Driven by the air supply mode, the outdoor cold air enters the room through the outdoor return air grille The air duct of the indoor unit finally flows into the room through the air outlet of the air duct of the indoor unit to cool the room.
附图说明Description of the drawings
下面参照附图来描述本发明的具体实施方式，附图中：The specific embodiments of the present invention are described below with reference to the accompanying drawings, in which:
图1是根据本发明的一个实施例的风管式空调器的运行控制方法主要步骤流程示意图；Fig. 1 is a schematic flow chart of main steps of an operation control method of a duct type air conditioner according to an embodiment of the present invention;
图2是根据本发明的一个实施例的风管式空调器的主要结构示意图；Figure 2 is a schematic diagram of the main structure of a duct type air conditioner according to an embodiment of the present invention;
图3是根据本发明的另一个实施例的风管式空调器的主要结构示意图Figure 3 is a schematic diagram of the main structure of a duct type air conditioner according to another embodiment of the present invention
附图标记列表：List of reference signs:
11：蒸发器；12：电机/风扇；13：室外回风栅；131：过滤网；14：室内回风栅；15：回风温度传感器；2：室外机；3：墙体。11: evaporator; 12: motor/fan; 13: outdoor return air grille; 131: filter screen; 14: indoor return air grille; 15: return air temperature sensor; 2: outdoor unit; 3: wall.
具体实施方式Detailed ways
下面参照附图来描述本发明的一些实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。Hereinafter, some embodiments of the present invention will be described with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.
在本发明的描述中，“模块”、“处理器”可以包括硬件、软件或者两者的组合。一个模块可以包括硬件电路，各种合适的感应器，通信端口，存储器，也可以包括软件部分，比如程序代码，也可以是软件和硬件的组合。处理器可以是中央处理器、微处理器、图像处理器、数字信号处理器或者其他任何合适的处理器。处理器具有数据和/或信号处理功能。处理器可以以软件方式实现、硬件方式实现或者二者结合方式实现。非暂时性的计算机可读存储介质包括任何合适的可存储程序代码的介质，比如磁碟、硬盘、光碟、闪存、只读存储器、随机存取存储器等等。术语“A和/或B”表示所有可能的A与B的组合，比如只是A、只是B或者A和B。术语“至少一个A或B”或者“A和B中的至少一个”含义与“A和/或B”类似，可以包括只是A、只是B或者A和B。单数形式的术语“一个”、“这个”、“某个”也可以包含复数形式。In the description of the present invention, "module" and "processor" may include hardware, software, or a combination of both. A module can include hardware circuits, various suitable sensors, communication ports, and memory, and can also include software parts, such as program codes, or a combination of software and hardware. The processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor, or any other suitable processor. The processor has data and/or signal processing functions. The processor can be implemented in software, hardware, or a combination of the two. The non-transitory computer-readable storage medium includes any suitable medium that can store program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, and so on. The term "A and/or B" means all possible combinations of A and B, such as only A, only B, or A and B. The term "at least one of A or B" or "at least one of A and B" has a meaning similar to "A and/or B" and may include only A, only B, or A and B. The terms "a", "this", and "some" in the singular form may also include plural forms.
对于一些室内温度高室外温度低的场所(例如冬季的火锅店)的制冷需求，由于空调内冷媒管路的压力受环境温度影响，温度越高冷媒管路的压力越高，温度越低冷媒管路的压力越低，因此在“室内温度高室外温度低的场所”内，处于室外的空调高压系统压力变低，处于室内的空调低压系统压力变高，致使空调高压系统与空调低压系统的压差变小，导致冷媒管路中冷媒的循环流量变小，进而导致空调制冷效果变差。为解决上述问题，目前传统的空调制冷运行方法主要是，通过调整室外风机的转速和/或减小室外换热器的换热面积，来使室外机的温度在室外环境温度较低时尽可能升高，进而使空调高压系统的压力尽可能增大，从而增大空调高压系统与空调低压系统的压差，促使冷媒管路中冷媒的循环流量变大，提高空调制冷效果。但是这种方法需要室外机长时间运行才能降低以及维持较好的制冷效果，室外机内的压缩机等部件在长时间运行下很容易磨损、老化，致使部件寿命降低。此外，压缩机长时间运行也会消耗较大的电能，无法实现空调节能的目的。For the refrigeration requirements of some places with high indoor temperature and low outdoor temperature (such as hot pot restaurants in winter), because the pressure of the refrigerant pipeline in the air conditioner is affected by the ambient temperature, the higher the temperature, the higher the pressure of the refrigerant pipeline, and the lower the temperature. The lower the pressure of the road, the lower the pressure of the high-pressure air-conditioning system outside and the higher the pressure of the low-pressure air-conditioning system in the room in the “places with high indoor temperature and low outdoor temperature”. The smaller the difference, the smaller the circulating flow of the refrigerant in the refrigerant pipeline, and the worse the cooling effect of the air conditioner. In order to solve the above problems, the current traditional air-conditioning refrigeration operation method is mainly to adjust the speed of the outdoor fan and/or reduce the heat exchange area of the outdoor heat exchanger to make the temperature of the outdoor unit as much as possible when the outdoor ambient temperature is low. Increase the pressure of the air-conditioning high-pressure system as much as possible, thereby increasing the pressure difference between the air-conditioning high-pressure system and the air-conditioning low-pressure system, promoting the circulation flow of the refrigerant in the refrigerant pipeline to increase, and improving the cooling effect of the air-conditioning. However, this method requires the outdoor unit to operate for a long time to reduce and maintain a better cooling effect. The compressor and other components in the outdoor unit are prone to wear and aging under long-term operation, resulting in reduced component life. In addition, the long-term operation of the compressor will also consume a large amount of electric energy, which cannot achieve the purpose of energy saving of the air conditioner.
在本发明实施例中，当风管式空调器运行在制冷模式时可以定时地根据室内温度与室外温度的温度差ΔT，判断是否调整风管式空调器的运行模式。如果判断为需要调整运行模式，则将制冷模式调整为送 风模式并利用室外的低温空气对室内空气进行降温。由于在送风模式下压缩机处于停机状态，因而本发明既可以达到制冷的目的，还可以避免压缩机由于长时间运行导致的磨损、老化和寿命降低等问题。为了能够有效利用室外的低温空气对室内空气进行降温，本发明还对风管式空调器的室内机做了结构改进。具体而言，在室内机内设置室内回风栅和室外回风栅。室内回风栅通过风管接入室内，以便室内空气能够通过室内回风栅进入室内机风道；室外回风栅通过风管接入室外，以便室外空气能够通过室外回风栅进入室内机风道。本发明在判断出需要将制冷模式调整为送风模式时，先控制室外回风栅打开，再将制冷模式调整为送风模式，在送风模式驱动下，室外冷空气通过室外回风栅进入室内机风道，最后通过室内机风道的出风口流入室内，对室内进行降温。In the embodiment of the present invention, when the duct type air conditioner is operating in the cooling mode, it can be periodically determined whether to adjust the operation mode of the duct type air conditioner according to the temperature difference ΔT between the indoor temperature and the outdoor temperature. If it is determined that the operation mode needs to be adjusted, the cooling mode is adjusted to the air supply mode and the outdoor low-temperature air is used to cool the indoor air. Since the compressor is in a shutdown state in the air supply mode, the present invention can not only achieve the purpose of refrigeration, but also avoid problems such as wear, aging and life reduction of the compressor due to long-term operation. In order to effectively use the outdoor low-temperature air to cool the indoor air, the present invention also improves the structure of the indoor unit of the duct type air conditioner. Specifically, an indoor return air grille and an outdoor return air grille are provided in the indoor unit. The indoor return air grille is connected to the room through the air duct so that indoor air can enter the indoor unit air duct through the indoor return air grille; the outdoor return air grille is connected to the outdoor through the air pipe so that outdoor air can enter the indoor unit air through the outdoor return air grille road. When it is judged that the cooling mode needs to be adjusted to the air supply mode, the present invention first controls the outdoor return air grille to open, and then adjusts the cooling mode to the air supply mode. Under the drive of the air supply mode, the outdoor cold air enters through the outdoor return air grille The indoor unit air duct finally flows into the room through the air outlet of the indoor unit air duct to cool the room.
参阅附图1，图1是根据本发明的一个实施例的风管式空调器的运行控制方法的主要步骤流程示意图。在本实施例中室内机内设置有室内回风栅和室外回风栅。室内回风栅通过风管接入室内，以便室内空气能够通过室内回风栅进入室内机风道；室外回风栅通过风管接入室外，以便室外空气能够通过室外回风栅进入室内机风道。如图1所示，本发明实施例中风管式空调器的运行控制方法主要包括以下步骤：Referring to Fig. 1, Fig. 1 is a schematic flow chart of the main steps of a method for controlling the operation of a duct type air conditioner according to an embodiment of the present invention. In this embodiment, the indoor unit is provided with an indoor return air grille and an outdoor return air grille. The indoor return air grille is connected to the room through the air duct so that indoor air can enter the indoor unit air duct through the indoor return air grille; the outdoor return air grille is connected to the outdoor through the air pipe so that outdoor air can enter the indoor unit air through the outdoor return air grille road. As shown in Fig. 1, the operation control method of the duct type air conditioner in the embodiment of the present invention mainly includes the following steps:
步骤S101：当风管式空调器运行在制冷模式时，定时检测室内温度与室外温度。Step S101: When the duct type air conditioner is operating in the cooling mode, the indoor temperature and the outdoor temperature are regularly detected.
室内温度指的是风管式空调器的室内机所在场所(建筑物)内的温度，室外温度指的是风管式空调器的室内机所在场所(建筑物外)的温度。The indoor temperature refers to the temperature in the place (building) where the indoor unit of the duct type air conditioner is located, and the outdoor temperature refers to the temperature in the place (outside the building) where the indoor unit of the duct type air conditioner is located.
在一个实施方式中，可以按照以下步骤检测室内温度与室外温度：在风管式空调器启动制冷模式后，控制室内回风栅打开以及室外回风栅关闭，随后定时(间隔10分钟)检测室内温度与室外温度。In one embodiment, the indoor temperature and outdoor temperature can be detected according to the following steps: after the duct type air conditioner starts the cooling mode, the indoor return air grille is controlled to open and the outdoor return air grille is closed, and then the indoor temperature is detected at regular intervals (10 minutes apart). Temperature and outdoor temperature.
在利用设置于室内机风道内的温度检测装置如温度传感器测温时，关闭室外回风栅，可以避免室外冷空气流入室内机风道，影响温度检测装置的测温结果。进一步，打开室内回风栅，可以使室内机风道内的空气温度更加接近于室内的空气温度，从而使温度检测装置的测温结果会更加接近于室内的空气温度。When using a temperature detection device such as a temperature sensor installed in the air duct of the indoor unit to measure temperature, closing the outdoor return air grille can prevent outdoor cold air from flowing into the air duct of the indoor unit and affect the temperature measurement result of the temperature detection device. Further, opening the indoor return air grille can make the air temperature in the air duct of the indoor unit closer to the indoor air temperature, so that the temperature measurement result of the temperature detection device is closer to the indoor air temperature.
步骤S102：根据室内温度与室外温度的温度差，判断是否调整风管式空调器的运行模式。其中，室内温度与室外温度的温度差 ΔT＝T 室内-T 室外，T 室内和T 室外分别是室内温度与室外温度。具体地，若判断为需要调整运行模式，则转至步骤S103；若判断为不需要调整运行模式，则转至步骤S104。 Step S102: Determine whether to adjust the operation mode of the duct type air conditioner according to the temperature difference between the indoor temperature and the outdoor temperature. Wherein the temperature difference between the indoor temperature and outdoor temperature ΔT = T in the indoor outdoor -T, T are the indoor and outdoor T indoor temperature and outdoor temperature. Specifically, if it is determined that the operation mode needs to be adjusted, then go to step S103; if it is determined that the operation mode does not need to be adjusted, then go to step S104.
在一个实施方式中，根据室内温度与室外温度的温度差ΔT，判断是否调整风管式空调器的运行模式，具体包括：In one embodiment, determining whether to adjust the operation mode of the duct type air conditioner according to the temperature difference ΔT between the indoor temperature and the outdoor temperature includes:
(1)若ΔT＜ΔT 1，则继续控制室内回风栅打开以及室外回风栅关闭，不调整风管式空调器的运行模式。其中，ΔT 1是预设的温差下限，ΔT 1是一个较小的数值且ΔT 1＞0，表示室内温度与室外温度比较接近。一个例子：ΔT 1＝5°。ΔT＜ΔT 1包括ΔT＜0以及0＜ΔT＜ΔT 1两种情况，下面分别对这两种情况为何不调整风管式空调器的运行模式作具体说明。 (1) If ΔT<ΔT 1 , continue to control the opening of the indoor return air grille and the closing of the outdoor return air grille, without adjusting the operating mode of the ducted air conditioner. Among them, ΔT 1 is the preset lower limit of temperature difference, ΔT 1 is a small value and ΔT 1 >0, which means that the indoor temperature is relatively close to the outdoor temperature. An example: ΔT 1 =5°. ΔT<ΔT 1 includes two cases: ΔT<0 and 0<ΔT<ΔT 1. The following is a detailed description of why the operation mode of the duct type air conditioner is not adjusted in these two cases.
若ΔT＜0，则表明室内温度T 室内小于室外温度T 室外，由于在夏季室内温度一般要低于室外温度，因而这种情况表明空调可能处于夏季制冷状态。由前述分析可知，在夏季制冷时不存在由于温度的影响导致的空调高压系统压力变低以及空调低压系统压力变高，进而导致空调制冷效果变差的问题，因此，也就不需要调整空调的运行模式。进一步，在一个实施方式中，由于ΔT＜0表明空调处于夏季制冷状态，因而还可以判断是否接收到新风指令；若接收到新风指令，表明用户有新风(fresh air)需求，则可以根据新风指令控制室外回风栅打开，使得室外的新鲜空气能够通过室外回风栅进入室内机风道，进而通过室内机风道的出风口进入室内。 If ΔT<0, it indicates that the indoor temperature T indoor is lower than the outdoor temperature T outdoor . Since the indoor temperature is generally lower than the outdoor temperature in summer, this situation indicates that the air conditioner may be in a cooling state in summer. From the foregoing analysis, it can be seen that there is no problem of lower air-conditioning high-pressure system pressure and higher air-conditioning low-pressure system pressure caused by the influence of temperature during summer cooling, which will lead to the deterioration of the air-conditioning refrigeration effect. Therefore, there is no need to adjust the air-conditioning system. Operating mode. Further, in one embodiment, since ΔT<0 indicates that the air conditioner is in a summer cooling state, it can also be judged whether a fresh air command is received; if a fresh air command is received, it indicates that the user has a fresh air demand, according to the fresh air command The outdoor return air grille is controlled to open, so that the fresh outdoor air can enter the indoor unit air duct through the outdoor air return grille, and then enter the room through the air outlet of the indoor unit air duct.
若0＜ΔT＜ΔT 1，则表明室内温度T 室内大于室外温度T 室外，由于在冬季室内温度一般要高于室外温度，因而这种情况表明空调可能处于冬季制冷状态。但是，由于室内温度与室外温度比较接近，如果利用室外冷空气对室内进行降温，达不到较好的制冷效果，因此不需要调整空调的运行模式。 If 0<ΔT<ΔT 1 , it means that the indoor temperature T indoor is greater than the outdoor temperature T outdoor . Since the indoor temperature is generally higher than the outdoor temperature in winter, this situation indicates that the air conditioner may be in a winter cooling state. However, because the indoor temperature is relatively close to the outdoor temperature, if the outdoor cold air is used to cool the indoors, a better cooling effect cannot be achieved, so there is no need to adjust the operation mode of the air conditioner.
(2)若ΔT＞ΔT 2，则控制室内回风栅关闭以及室外回风栅打开，随后将制冷模式调整为送风模式。其中，ΔT 2是预设的温差上限，ΔT 2是一个较大的数值且ΔT 2＞ΔT 1，表示室内温度与室外温度相差比较大。一个例子：若ΔT 2＝12°。 (2) If ΔT>ΔT 2 , control the indoor return air grille to close and the outdoor return air grille to open, and then adjust the cooling mode to the air supply mode. Among them, ΔT 2 is the preset upper limit of temperature difference, ΔT 2 is a larger value and ΔT 2 >ΔT 1 , which means that the indoor temperature and the outdoor temperature are quite different. An example: if ΔT 2 =12°.
ΔT＞ΔT 2则表明室内温度T 室内大于室外温度T 室外，由于在冬季室内温度一般要高于室外温度，因而这种情况表明空调可能处于冬季制冷状态。同时，由于室外温度T 室外较低，因而可以利用室外冷空气对 室内进行降温，以达到较好的制冷效果。具体是，先打开室外回风栅再将制冷模式调整为送风模式，就可以在送风模式的驱动下将室外冷空气送入室内风道，进而通过室内机风道的出风口进入室内，对室内进行降温。此外，为了进一步提高送风模式的制冷效果，可以将室外回风栅的开度调整至最大。 ΔT>ΔT 2 indicates that the indoor temperature T indoor is greater than the outdoor temperature T outdoor . Since the indoor temperature is generally higher than the outdoor temperature in winter, this situation indicates that the air conditioner may be in a winter cooling state. At the same time, since the outdoor temperature T is low outside , the outdoor cold air can be used to cool the indoors to achieve a better cooling effect. Specifically, by opening the outdoor return air grille first and then adjusting the cooling mode to the air supply mode, the outdoor cold air can be sent into the indoor air duct under the drive of the air supply mode, and then enter the room through the air outlet of the indoor unit air duct. Cool down the room. In addition, in order to further improve the cooling effect of the air supply mode, the opening of the outdoor return air grille can be adjusted to the maximum.
(3)若ΔT 1＜ΔT＜ΔT 2，则将室内回风栅与室外回风栅的开度分别调整至预设开度值，不调整风管式空调器的运行模式。由前述分析可知，ΔT 1和ΔT 2分别是预设的温差下限和温差上限，当温差ΔT处于温差下限和温差上限之间时，表明虽然室内温度与室外温度比较接近，但仍有一定的差距。如果单独利用室外冷空气对室内进行降温，可能达不到较好的制冷效果。基于空气流动的原理可知，热空气气压低，冷空气气压高，冷空气会流向热空气，因而在这种情况时可以将室外回风栅的开度调整至预设开度值(如最大开度的一半)，在室内热空气与室外冷空气的压差的作用下，室外冷空气可以通过室外回风栅流入室内风道，由于室外冷空气的自然流动量要远远低于送风模式下的流动量，这种方法只能达到一定的辅助制冷效果，因此需要控制空调继续运行在制冷模式。同时，将室内回风栅的开度也调整至预设开度值(如最大开度的一半)，利用室内循环的空气进行室内降温。 (3) If ΔT 1 &lt; ΔT &lt; ΔT 2 , the opening of the indoor return air grille and the outdoor return air grille are adjusted to the preset opening values respectively, and the operation mode of the duct type air conditioner is not adjusted. From the foregoing analysis, it can be seen that ΔT 1 and ΔT 2 are the preset lower limit of temperature difference and upper limit of temperature difference, respectively. When the temperature difference ΔT is between the lower limit of temperature difference and the upper limit of temperature difference, it indicates that although the indoor temperature is close to the outdoor temperature, there is still a certain gap. . If the outdoor cold air alone is used to cool the room, it may not achieve a better cooling effect. Based on the principle of air flow, the hot air pressure is low, the cold air pressure is high, and the cold air will flow to the hot air. Therefore, in this case, the opening of the outdoor return air grille can be adjusted to a preset opening value (such as the maximum opening). Under the effect of the pressure difference between the indoor hot air and the outdoor cold air, the outdoor cold air can flow into the indoor air duct through the outdoor return air grille. Because the natural flow of outdoor cold air is much lower than the air supply mode Under the flow rate, this method can only achieve a certain auxiliary cooling effect, so it is necessary to control the air conditioner to continue to run in the cooling mode. At the same time, the opening degree of the indoor return air grille is also adjusted to a preset opening value (for example, half of the maximum opening degree), and the indoor temperature is cooled by using the indoor circulating air.
步骤S103：控制室外回风栅打开并且将制冷模式调整为送风模式。Step S103: controlling the outdoor return air grille to open and adjusting the cooling mode to the air supply mode.
步骤S104：控制风管式空调器继续在制冷模式下运行。Step S104: Control the duct type air conditioner to continue to operate in the cooling mode.
本发明实施例根据室内温度与室外温度的温度差ΔT，来调整风管式空调器的运行模式，如果判断为需要调整运行模式，则将制冷模式调整为送风模式并利用室外的低温空气对室内空气进行降温。由于在送风模式下压缩机处于停机状态，因而本发明实施例既可以达到制冷的目的，还可以避免压缩机由于长时间运行导致的磨损、老化、寿命减短等问题。The embodiment of the present invention adjusts the operation mode of the duct type air conditioner according to the temperature difference ΔT between the indoor temperature and the outdoor temperature. If it is determined that the operation mode needs to be adjusted, the cooling mode is adjusted to the air supply mode and the outdoor low-temperature air is used to The indoor air is cooled down. Since the compressor is in a shutdown state in the air supply mode, the embodiment of the present invention can not only achieve the purpose of refrigeration, but also avoid problems such as wear, aging, and shortened life of the compressor due to long-term operation.
在一个实施方式中，当室外回风栅打开后，还可以包括根据室内温度与室外温度的温度差ΔT分析利用室外冷空气制冷的制冷效果，进而根据分析结果判断是否关闭室外回风栅的步骤。该步骤具体包括：In one embodiment, when the outdoor return air grille is opened, it may further include the step of analyzing the cooling effect of using outdoor cold air cooling according to the temperature difference ΔT between the indoor temperature and the outdoor temperature, and then judging whether to close the outdoor return air grille according to the analysis result . This step specifically includes:
步骤1：判断在一定时长内检测到的室内温度与室外温度的温度差ΔT是否均小于预设的温差阈值。其中，预设的温差阈值是一个小 于预设的温差下限ΔT 1的温度值。一个例子：若ΔT 1＝5°，预设的温差阈值可以是3°。 Step 1: Determine whether the temperature difference ΔT between the indoor temperature and the outdoor temperature detected within a certain period of time is less than a preset temperature difference threshold. Wherein, the preset temperature difference threshold is a temperature value less than the preset temperature difference lower limit ΔT 1 . An example: if ΔT 1 =5°, the preset temperature difference threshold may be 3°.
若一定时长内每个温度差ΔT均小于预设的温差阈值(温度差ΔT连续小于预设的温差阈值)，表明室内温度与室外温度比较接近，如果继续利用室外冷空气对室内进行降温，制冷效果不会进一步提高，此时可以转至步骤2；若一定时长内存在某个温度差ΔT大于或等于预设的温差阈值的情况(温度差ΔT没有连续小于预设的温差阈值)，表明仍存在室内温度与室外温度相差比较大的可能，如果继续利用室外冷空气对室内进行降温，制冷效果会进一步提高，此时可以转至步骤5。If each temperature difference ΔT is less than the preset temperature difference threshold for a certain period of time (the temperature difference ΔT is continuously smaller than the preset temperature difference threshold), it indicates that the indoor temperature is relatively close to the outdoor temperature. If you continue to use outdoor cold air to cool the room, cooling The effect will not be further improved, and you can go to step 2 at this time; if there is a certain temperature difference ΔT greater than or equal to the preset temperature difference threshold for a certain period of time (the temperature difference ΔT is not continuously smaller than the preset temperature difference threshold), it indicates that there is still There may be a large difference between the indoor temperature and the outdoor temperature. If you continue to use outdoor cold air to cool the room, the cooling effect will be further improved. At this time, you can go to step 5.
步骤2：控制室内回风栅打开以及室外回风栅关闭，判断风管式空调器的室外机内的压缩机是否处于停机状态。具体地，若压缩机处于停机状态，则转至步骤3；若压缩机处于工作状态，则转至步骤4。Step 2: Control the opening of the indoor return air grille and the closing of the outdoor return air grille, and determine whether the compressor in the outdoor unit of the duct type air conditioner is in a shutdown state. Specifically, if the compressor is in a stopped state, go to step 3; if the compressor is in a working state, go to step 4.
步骤3：由前述分析可知，若压缩机处于停机状态，则表明风管式空调器运行在送风模式。并且由于一定时长室内温度与室外温度的温度差ΔT连续小于预设的温差阈值，如果继续利用室外冷空气对室内进行降温，制冷效果不会进一步提高，因此需要将送风模式调整为制冷模式。Step 3: From the foregoing analysis, it can be seen that if the compressor is in a shutdown state, it indicates that the duct type air conditioner is operating in the air supply mode. And because the temperature difference ΔT between the indoor temperature and the outdoor temperature for a certain period of time is continuously smaller than the preset temperature difference threshold, if the outdoor cold air is used to cool the indoor, the cooling effect will not be further improved, so the air supply mode needs to be adjusted to the cooling mode.
进一步，为了防止由于频繁启停导致的压缩机损坏，在将送风模式调整为制冷模式之前，还可以先判断压缩机的停机时长是否达到预设的时长阈值；若达到，则启动压缩机并将送风模式调整为制冷模式；若未达到，则在停机时长达到预设的时长阈值之后，再将送风模式调整为制冷模式。Furthermore, in order to prevent the compressor from being damaged due to frequent start and stop, before adjusting the air supply mode to the cooling mode, it can also be judged whether the compressor stop time reaches the preset time threshold; if it reaches, the compressor is started and The air supply mode is adjusted to the cooling mode; if it is not reached, the air supply mode is adjusted to the cooling mode after the shutdown duration reaches the preset duration threshold.
步骤4：由前述分析可知，若压缩机没有处于停机状态，则表明风管式空调器仍然运行在制冷模式。并且由于一定时长室内温度与室外温度的温度差ΔT连续小于预设的温差阈值，如果继续利用室外冷空气对室内进行降温，制冷效果不会进一步提高，因此需要将室外回风栅关闭，同时不调整风管式空调器的运行模式。Step 4: From the foregoing analysis, it can be seen that if the compressor is not in a shutdown state, it indicates that the duct type air conditioner is still running in the cooling mode. And because the temperature difference ΔT between the indoor temperature and the outdoor temperature for a certain period of time is continuously smaller than the preset temperature difference threshold, if you continue to use outdoor cold air to cool the room, the cooling effect will not be further improved, so the outdoor return air grille needs to be closed, and the outdoor air return grille needs to be closed at the same time. Adjust the operating mode of the ducted air conditioner.
步骤5：由前述分析可知，如果在一定时长内温度差ΔT没有连续小于预设的温差阈值，表明可能存在室内温度与室外温度相差比较大的情况，继续利用室外冷空气对室内进行降温，制冷效果会进一步提高，因此不需要关闭室外回风栅，也不需要调整风管式空调器的运行 模式。例如：在ΔT＞ΔT 2的情况下，风管式空调器继续运行在送风模式；在ΔT 1＜ΔT＜ΔT 2的情况下，风管式空调器继续运行在制冷模式。 Step 5: From the foregoing analysis, it can be seen that if the temperature difference ΔT is not continuously smaller than the preset temperature difference threshold within a certain period of time, it indicates that there may be a large difference between the indoor temperature and the outdoor temperature. Continue to use outdoor cold air to cool the room. The effect will be further improved, so there is no need to close the outdoor return grille, and there is no need to adjust the operating mode of the ducted air conditioner. For example: In the ΔT> ΔT 2 where, the duct type air conditioner continues to operate in the blowing mode; ΔT 1 <ΔT <ΔT 2 in the case of the duct type air conditioner continues to operate in the cooling mode.
在一个实施方式中，当风管式空调器运行在制热模式时，可以控制室内回风栅打开以及室外回风栅关闭，避免室外空气通过室外回风栅进入室内机风道影响空调的制热效果。但是，当接收到新风指令时，表明用户有新风需求，则可以根据新风指令控制室外回风栅打开，使得室外的新鲜空气能够通过室外回风栅进入室内机风道，进而通过室内机风道的出风口进入室内，满足用户的新风需求。In one embodiment, when the ducted air conditioner is operating in heating mode, the indoor return air grille can be controlled to open and the outdoor return air grille to close, so as to prevent outdoor air from entering the indoor unit duct through the outdoor return air grille and affecting the control of the air conditioner. Thermal effect. However, when a fresh air instruction is received, indicating that the user has fresh air demand, the outdoor return air grille can be controlled to open according to the fresh air instruction, so that outdoor fresh air can enter the indoor unit air duct through the outdoor return air grille, and then pass through the indoor unit air duct The air outlet enters the room to meet the fresh air demand of users.
需要指出的是，尽管上述实施例中将各个步骤按照特定的先后顺序进行了描述，但是本领域技术人员可以理解，为了实现本发明的效果，不同的步骤之间并非必须按照这样的顺序执行，其可以同时(并行)执行或以其他顺序执行，这些变化都在本发明的保护范围之内。It should be pointed out that although the various steps are described in a specific sequence in the above embodiments, those skilled in the art can understand that in order to achieve the effects of the present invention, different steps do not have to be executed in this order. They can be executed simultaneously (parallel) or in other sequences, and these changes are all within the protection scope of the present invention.
在本发明的再一个实施例中，还提供了一种控制装置。在该控制装置实施例中，控制装置可以包括处理器和存储装置，存储装置适于存储多条程序代码，所述程序代码适于由处理器加载并运行以执行上述风管式空调器的运行控制方法实施例所述的风管式空调器的运行控制方法的具体步骤。为了便于说明，仅示出了与本说明书实施例相关的部分，具体技术细节未揭示的，请参照本说明书实施例方法部分。该控制装置，可以是包括各种电子设备形成的服务器设备，PC电脑、网络云服务器等。In yet another embodiment of the present invention, a control device is also provided. In this embodiment of the control device, the control device may include a processor and a storage device, and the storage device is adapted to store multiple pieces of program code, and the program code is adapted to be loaded and run by the processor to execute the operation of the above-mentioned duct type air conditioner. The specific steps of the operation control method of the duct type air conditioner described in the control method embodiment. For ease of description, only the parts related to the embodiments of this specification are shown. For specific technical details that are not disclosed, please refer to the method part of the embodiments of this specification. The control device may be a server device formed by various electronic devices, a PC computer, a network cloud server, and the like.
在本发明的再一个实施例中，还提供了一种风管式空调器。在该风管式空调器实施例中，风管式空调器可以包括室内机和室外机。室内机包括上述控制装置所述的控制装置以及室内回风栅、室外回风栅与设置在室内机风道内的回风温度传感器。室外机可以包括压缩机与室外温度传感器。具体而言，室内回风栅通过风管接入室内，以便室内空气能够通过室内回风栅进入室内机风道；室外回风栅通过风管接入室外，以便室外空气能够通过室外回风栅进入室内机风道。控制装置可以被配置成分别通过回风温度传感器与室外温度传感器检测室内温度与室外温度并且根据检测结果进行风管式空调器运行控制。In still another embodiment of the present invention, a duct type air conditioner is also provided. In this embodiment of the duct type air conditioner, the duct type air conditioner may include an indoor unit and an outdoor unit. The indoor unit includes the control device described in the aforementioned control device, an indoor return air grille, an outdoor return air grille, and a return air temperature sensor arranged in the air duct of the indoor unit. The outdoor unit may include a compressor and an outdoor temperature sensor. Specifically, the indoor return air grille is connected to the room through a duct so that indoor air can enter the indoor air duct through the indoor return air grille; the outdoor return air grille is connected to the outdoors through a duct so that outdoor air can pass through the outdoor return air grille Enter the indoor unit air duct. The control device may be configured to detect the indoor temperature and the outdoor temperature through the return air temperature sensor and the outdoor temperature sensor, respectively, and perform operation control of the duct type air conditioner according to the detection result.
参阅附图2，图2是根据本发明一个实施例的风管式空调器的主要结构示意图。如图2所示，风管式空调器包括室内机和室外机2。室内机具体可以包括蒸发器11、电机/风扇12、室外回风栅13、室内回 风栅14与回风温度传感器15。室内机风道的风管通过室外回风栅13穿过墙体3进入室外。室外回风栅13的内侧(靠近墙体3的一侧)设置有过滤网131，过滤网131可以滤除室外空气中夹杂的灰尘、颗粒物等杂质。箭头“→”表示室内机风道内的空气流动方向，该空气流动方向主要包括由室外回风栅13依次流向电机/风扇12、回风温度传感器15与蒸发器11，由室内回风栅14依次流向电机/风扇12、回风温度传感器15与蒸发器11。Referring to Figure 2, Figure 2 is a schematic diagram of the main structure of a duct type air conditioner according to an embodiment of the present invention. As shown in FIG. 2, the duct type air conditioner includes an indoor unit and an outdoor unit 2. The indoor unit may specifically include an evaporator 11, a motor/fan 12, an outdoor return air grill 13, an indoor return air grill 14, and a return air temperature sensor 15. The air duct of the indoor unit air duct passes through the outdoor air return grill 13 and enters the outdoor through the wall 3. A filter screen 131 is provided on the inner side of the outdoor air return grill 13 (on the side close to the wall 3), and the filter screen 131 can filter out impurities such as dust, particles, etc. contained in the outdoor air. The arrow "→" indicates the air flow direction in the air duct of the indoor unit. The air flow direction mainly includes the flow from the outdoor air return grille 13 to the motor/fan 12, the return air temperature sensor 15 and the evaporator 11, and the indoor return air grille 14 in turn Flow to the motor/fan 12, the return air temperature sensor 15 and the evaporator 11.
在本实施例中，电机/风扇12主要包括送风电机与风扇，送风电机用于驱动风扇转动，以将从室外回风栅13与室内回风栅14流入的空气吹向室内机风道内。当风管式空调器运行在制热模式时，蒸发器11的温度会比较高，这样流经蒸发器11后的空气温度也会增大。如果将电机/风扇12设置在蒸发器11的后侧(沿着室内机风道内空气流动由前至后的方向)，那么高温的空气可能会影响电机/风扇12的正常运行(如发生过热现象)。为了克服上述问题，如图2所示，本发明实施例在沿着室内机风道内空气流动由前至后的方向上，将电机/风扇12均设置在蒸发器11的前侧，从而保证电机/风扇12在制热模式能够正常运行。In this embodiment, the motor/fan 12 mainly includes a blower motor and a fan. The blower motor is used to drive the fan to rotate so as to blow the air flowing in from the outdoor return air grill 13 and the indoor return air grill 14 into the air duct of the indoor unit. . When the duct type air conditioner operates in the heating mode, the temperature of the evaporator 11 will be relatively high, so that the temperature of the air flowing through the evaporator 11 will also increase. If the motor/fan 12 is installed on the back side of the evaporator 11 (in the front-to-back direction of the air flow in the indoor unit air duct), the high-temperature air may affect the normal operation of the motor/fan 12 (such as overheating) ). In order to overcome the above problems, as shown in FIG. 2, the embodiment of the present invention arranges the motor/fan 12 on the front side of the evaporator 11 along the air flow in the indoor unit air duct from front to back, so as to ensure that the motor /Fan 12 can operate normally in heating mode.
进一步，如果将电机/风扇12设置在蒸发器11的前侧(沿着室内机风道内空气流动由前至后的方向)，由于蒸发器11的阻力较大，会产生很大的噪声。同时，在实际应用中，室内机风道可能会比较长(如室内空间较大)，那么将电机/风扇12设置在蒸发器11的前侧，可能无法将空气驱动至室内机风道的出风口。因此，在考虑到上述问题后，可以根据风管式空调器的应用场景选择电机/风扇12的安装位置。具体而言，对于室内机风道比较短或者对风管式空调器的运行噪音要求比较低的应用场景，可以将电机/风扇12设置在蒸发器11的前侧(沿着室内机风道内空气流动由前至后的方向)。对于室内机风道比较长或者对风管式空调器的运行噪音要求比较高的应用场景，可以将电机/风扇12设置在蒸发器11的后侧(如图3所示，在沿着室内机风道内空气流动由前至后的方向上，将电机/风扇12设置在蒸发器11的后侧)。Furthermore, if the motor/fan 12 is arranged on the front side of the evaporator 11 (in the front-to-rear direction of the air flow in the indoor unit air duct), the evaporator 11 has a relatively large resistance and generates a lot of noise. At the same time, in practical applications, the air duct of the indoor unit may be relatively long (for example, the indoor space is large), so if the motor/fan 12 is arranged on the front side of the evaporator 11, it may not be able to drive the air to the outlet of the indoor unit duct. tuyere. Therefore, after considering the above problems, the installation position of the motor/fan 12 can be selected according to the application scenario of the duct type air conditioner. Specifically, for application scenarios where the air duct of the indoor unit is relatively short or the operating noise of the ducted air conditioner is relatively low, the motor/fan 12 can be arranged on the front side of the evaporator 11 (along the air duct in the indoor unit). The direction of flow from front to back). For application scenarios where the air duct of the indoor unit is relatively long or the operating noise of the ducted air conditioner is relatively high, the motor/fan 12 can be arranged on the rear side of the evaporator 11 (as shown in Figure 3, along the indoor unit The air flow in the air duct is from front to back, and the motor/fan 12 is arranged on the rear side of the evaporator 11).
在本实施例中，风管式空调器的室内机还包括回风栅驱动装置(图2未示出)，该回风栅驱动装置用于驱动室外回风栅13与室内回风栅14进行打开与关闭。在一个实施方式中，回风栅驱动装置可以包括室外回风栅驱动模块与室内回风栅驱动模块，室外回风栅驱动模块用于驱 动室外回风栅13进行打开与关闭，室内回风栅驱动模块用于驱动室内回风栅14进行打开与关闭。一个例子：室外回风栅驱动模块与室内回风栅驱动模块分别包括一个步进电机(Stepping Motor)，通过该步进电机驱动各自对应的回风栅打开与关闭。要说明的是，虽然本发明仅提供了采用步进电机驱动回风栅打开与关闭这一个实施方式，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这一个具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以采用其他驱动装置来控制回风栅打开与关闭，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。In this embodiment, the indoor unit of the duct type air conditioner further includes a return air grill driving device (not shown in Figure 2), which is used to drive the outdoor return air grill 13 and the indoor return air grill 14 Open and close. In an embodiment, the return air grille driving device may include an outdoor return air grille drive module and an indoor return air grille drive module. The outdoor return air grille drive module is used to drive the outdoor return air grille 13 to open and close, and the indoor return air grille The driving module is used to drive the indoor return air grille 14 to open and close. An example: the outdoor return air grid drive module and the indoor return air grid drive module each include a stepping motor, and the corresponding return air grid is driven to open and close by the stepping motor. It should be noted that although the present invention only provides an embodiment of using a stepper motor to drive the return air grille to open and close, it is easy for those skilled in the art to understand that the scope of protection of the present invention is obviously not limited to this specific one. Implementation mode. Without departing from the principle of the present invention, those skilled in the art can use other driving devices to control the opening and closing of the return air grille, and the technical solutions after these modifications or replacements will fall within the protection scope of the present invention.
要说明的是，本发明实施例中的蒸发器和压缩机等部件均是本领域中的常规部件，为了描述简洁，在此不再对这些部件的具体实现功能做具体描述。It should be noted that the components such as the evaporator and the compressor in the embodiment of the present invention are conventional components in the field. For the sake of concise description, the specific implementation functions of these components will not be described in detail here.
本领域技术人员能够理解的是，发明实现上述一实施例的方法中的全部或部分流程，也可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一计算机可读存储介质中，该计算机程序在被处理器执行时，可实现上述各个方法实施例的步骤。其中，所述计算机程序包括计算机程序代码，所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读介质可以包括：能够携带所述计算机程序代码的任何实体或装置、介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器、随机存取存储器、电载波信号、电信信号以及软件分发介质等。需要说明的是，所述计算机可读介质包含的内容可以根据司法管辖区内立法和专利实践的要求进行适当的增减，例如在某些司法管辖区，根据立法和专利实践，计算机可读介质不包括电载波信号和电信信号。Those skilled in the art can understand that all or part of the process in the method of implementing the above-mentioned embodiment of the invention can also be completed by instructing relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage. In the medium, when the computer program is executed by the processor, the steps of the foregoing method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms. The computer-readable medium may include: any entity or device, medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory, random access memory, and electrical carrier signal that can carry the computer program code. , Telecommunications signals and software distribution media, etc. It should be noted that the content contained in the computer-readable medium can be appropriately added or deleted according to the requirements of the legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to the legislation and patent practice, the computer-readable medium Does not include electrical carrier signals and telecommunication signals.
本发明实施例提供风管式空调器的运行方法，在风管式空调器运行在制冷模式时可以定时地根据室内温度与室外温度的温度差ΔT，判断是否调整风管式空调器的运行模式。如果判断为需要调整运行模式，则将制冷模式调整为送风模式并利用室外的低温空气对室内空气进行降温。由于在送风模式下压缩机处于停机状态，因而本发明实施例既可以达到制冷的目的，还可以避免由于压缩机长时间运行导致的压缩机磨损、老化和寿命减短等问题。The embodiment of the present invention provides a method for operating a duct type air conditioner. When the duct type air conditioner is operating in the cooling mode, it can be periodically determined according to the temperature difference ΔT between the indoor temperature and the outdoor temperature to determine whether to adjust the operation mode of the duct type air conditioner . If it is determined that the operation mode needs to be adjusted, the cooling mode is adjusted to the air supply mode and the outdoor low-temperature air is used to cool the indoor air. Since the compressor is in a shutdown state in the air supply mode, the embodiment of the present invention can not only achieve the purpose of refrigeration, but also avoid problems such as compressor wear, aging, and shortened life due to long-term operation of the compressor.
至此，已经结合附图所示的一个实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。So far, the technical solution of the present invention has been described in conjunction with an embodiment shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (9)

  1. 一种风管式空调器的运行控制方法，其特征在于，所述风管式空调器的室内机包括室外回风栅，所述室外回风栅通过风管接入室外，以便室外空气能够通过所述室外回风栅进入室内机风道；An operation control method of a duct type air conditioner is characterized in that the indoor unit of the duct type air conditioner comprises an outdoor return air grille, and the outdoor return air grille is connected to the outdoors through a wind pipe so that outdoor air can pass through The outdoor return air grille enters the air duct of the indoor unit;
    所述运行控制方法包括：The operation control method includes:
    当风管式空调器运行在制冷模式时，定时检测室内温度与室外温度；When the ducted air conditioner is running in the cooling mode, it will regularly detect the indoor temperature and outdoor temperature;
    根据所述室内温度与室外温度的温度差ΔT，判断是否调整所述风管式空调器的运行模式；若是，则控制所述室外回风栅打开并且将所述制冷模式调整为送风模式，以便利用室外的低温空气对室内空气进行降温；According to the temperature difference ΔT between the indoor temperature and the outdoor temperature, determine whether to adjust the operation mode of the duct type air conditioner; if so, control the outdoor return air grille to open and adjust the cooling mode to the air supply mode, In order to use outdoor low-temperature air to cool indoor air;
    其中，所述温度差ΔT＝T 室内-T 室外，所述T 室内和T 室外分别是室内温度与室外温度。 Wherein the temperature difference ΔT = T -T outdoor indoor, the outdoor T and T are the indoor temperature and the indoor outdoor temperature.
  2. 根据权利要求1所述的风管式空调器的运行控制方法，其特征在于，所述室内机还包括室内回风栅，所述室内回风栅通过风管接入室内，以便室内空气能够通过所述室内回风栅进入室内机风道；The operation control method of a duct type air conditioner according to claim 1, wherein the indoor unit further comprises an indoor return air grille, and the indoor return air grille is connected to the room through a duct so that indoor air can pass through The indoor return air grille enters the air duct of the indoor unit;
    “当风管式空调器运行在制冷模式时，定时检测室内温度与室外温度”的步骤具体包括："When the ducted air conditioner is running in the cooling mode, periodically detect the indoor temperature and outdoor temperature" steps specifically include:
    在风管式空调器启动制冷模式后，控制所述室内回风栅打开以及所述室外回风栅关闭，随后定时检测室内温度与室外温度。After the duct type air conditioner starts the cooling mode, the indoor return air grille is controlled to open and the outdoor return air grille is closed, and then the indoor temperature and the outdoor temperature are periodically detected.
  3. 根据权利要求2所述的风管式空调器的运行控制方法，其特征在于，“根据所述室内温度与室外温度的温度差ΔT，判断是否调整所述风管式空调器的运行模式”的步骤具体包括：The operation control method of the air duct type air conditioner according to claim 2, characterized in that, “according to the temperature difference ΔT between the indoor temperature and the outdoor temperature, it is determined whether to adjust the operation mode of the air duct type air conditioner” The specific steps include:
    若ΔT＜ΔT 1，则继续控制所述室内回风栅打开以及所述室外回风栅关闭，不调整所述风管式空调器的运行模式； If ΔT<ΔT 1 , continue to control the indoor return air grille to open and the outdoor return air grille to close, without adjusting the operating mode of the duct type air conditioner;
    若ΔT＞ΔT 2，则控制所述室内回风栅关闭以及所述室外回风栅打开，随后将所述制冷模式调整为送风模式； If ΔT>ΔT 2 , control the indoor return air grille to close and the outdoor return air grille to open, and then adjust the cooling mode to the air supply mode;
    若ΔT 1＜ΔT＜ΔT 2，则将所述室内回风栅与室外回风栅的开度分别调整至预设开度值，不调整所述风管式空调器的运行模式； If ΔT 1 &lt; ΔT &lt; ΔT 2 , adjust the opening degrees of the indoor return air grille and the outdoor return air grille to preset opening values respectively, and do not adjust the operating mode of the duct type air conditioner;
    其中，所述预设开度值小于所述室内回风栅与室外回风栅的最大开度，所述ΔT 1和ΔT 2分别是预设的温差下限和温差上限。 Wherein, the preset opening value is less than the maximum opening of the indoor return air grille and the outdoor return air grille, and the ΔT 1 and ΔT 2 are the preset lower limit of the temperature difference and the upper limit of the temperature difference, respectively.
  4. 根据权利要求3所述的风管式空调器的运行控制方法，其特征在于，在所述室外回风栅打开后，所述方法还包括：The operation control method of a duct type air conditioner according to claim 3, wherein after the outdoor return air grille is opened, the method further comprises:
    判断在一定时长内检测到的室内温度与室外温度的温度差ΔT是否均小于预设的温差阈值；Determine whether the temperature difference ΔT between the indoor temperature and the outdoor temperature detected within a certain period of time is less than a preset temperature difference threshold;
    若在所述一定时长内每个温度差ΔT均小于预设的温差阈值，则控制所述室内回风栅打开以及所述室外回风栅关闭，随后判断所述风管式空调器的室外机内的压缩机是否处于停机状态；If each temperature difference ΔT is less than the preset temperature difference threshold within the certain period of time, control the indoor return air grille to open and the outdoor return air grille to close, and then determine the outdoor unit of the duct type air conditioner Whether the compressor inside is in shutdown state;
    若所述压缩机处于停机状态，则继续判断所述压缩机的停机时长是否达到预设的时长阈值；若是，则将所述送风模式调整为制冷模式；若否，则在所述停机时长达到预设的时长阈值之后，再将所述送风模式调整为制冷模式。If the compressor is in the shutdown state, continue to determine whether the shutdown duration of the compressor reaches the preset duration threshold; if so, adjust the air supply mode to the cooling mode; if not, then during the shutdown duration After reaching the preset duration threshold, the air supply mode is adjusted to the cooling mode.
  5. 根据权利要求3所述的风管式空调器的运行控制方法，其特征在于，所述方法还包括：The operation control method of a duct type air conditioner according to claim 3, wherein the method further comprises:
    当ΔT＜0时，判断是否接收到新风指令；若是，则根据所述新风指令控制所述室外回风栅打开。When ΔT<0, it is determined whether a fresh air instruction is received; if so, the outdoor return air grille is controlled to open according to the fresh air instruction.
  6. 根据权利要求1至5中任一项所述的风管式空调器的运行控制方法，其特征在于，所述方法还包括：The operation control method of a duct type air conditioner according to any one of claims 1 to 5, wherein the method further comprises:
    当风管式空调器运行在制热模式时，控制所述室内回风栅打开以及所述室外回风栅关闭；When the duct type air conditioner is operating in the heating mode, controlling the indoor return air grille to open and the outdoor return air grille to close;
    判断是否接收到新风指令；若是，则根据所述新风指令控制所述室外回风栅打开。It is determined whether a fresh air instruction is received; if so, the outdoor return air grille is controlled to open according to the fresh air instruction.
  7. 一种控制装置，包括处理器和存储装置，所述存储装置适于存储多条程序代码，其特征在于，所述程序代码适于由所述处理器加载并运行以执行权利要求1至6中任一项所述的风管式空调器的运行控制方法。A control device, comprising a processor and a storage device, the storage device is adapted to store a plurality of program codes, characterized in that the program code is adapted to be loaded and run by the processor to execute claims 1 to 6 The operation control method of any one of the duct type air conditioners.
  8. 一种风管式空调器，其特征在于，所述风管式空调器包括室内机和室外机；所述室内机包括权利要求7所述的控制装置以及室内回风栅、室外回风栅与设置在室内机风道内的回风温度传感器；所述室外机包括 压缩机与室外温度传感器；所述室内回风栅通过风管接入室内，以便室内空气能够通过所述室内回风栅进入室内机风道；所述室外回风栅通过风管接入室外，以便室外空气能够通过所述室外回风栅进入室内机风道；A duct type air conditioner, characterized in that the duct type air conditioner comprises an indoor unit and an outdoor unit; the indoor unit comprises the control device according to claim 7 and an indoor return air grille, an outdoor return air grille and A return air temperature sensor arranged in the air duct of the indoor unit; the outdoor unit includes a compressor and an outdoor temperature sensor; the indoor return air grille is connected to the room through a duct, so that indoor air can enter the room through the indoor return air grille Machine air duct; the outdoor return air grille is connected to the outdoors through a duct, so that outdoor air can enter the indoor unit air duct through the outdoor return air grille;
    所述控制装置被配置成分别通过所述回风温度传感器与所述室外温度传感器检测室内温度与室外温度并且根据检测结果进行风管式空调器的运行控制。The control device is configured to detect an indoor temperature and an outdoor temperature through the return air temperature sensor and the outdoor temperature sensor, respectively, and perform operation control of the duct type air conditioner according to the detection result.
  9. 根据权利要求8所述的风管式空调器，其特征在于，所述室内机还包括蒸发器、驱动所述室内回风栅以及室外回风栅打开/关闭的回风栅驱动装置，以及驱动所述室内机风道内空气流动的电机/风扇；The duct type air conditioner according to claim 8, wherein the indoor unit further comprises an evaporator, a return grill driving device that drives the indoor return grill and outdoor return grill to open/close, and a drive A motor/fan for air flow in the indoor unit air duct;
    在沿着所述室内机风道内空气流动由前至后的方向上，所述电机/风扇设置在所述蒸发器的前侧；或者，The motor/fan is arranged on the front side of the evaporator in a front-to-back direction along the air flow in the indoor unit air duct; or,
    在沿着所述室内机风道内空气流动由前至后的方向上，所述电机/风扇设置在所述蒸发器的后侧。The motor/fan is arranged on the rear side of the evaporator in a front-to-back direction along the air flow in the indoor unit air duct.
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