WO2020192070A1 - 空调器清洁装置、清洁方法及空调器 - Google Patents

空调器清洁装置、清洁方法及空调器 Download PDF

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Publication number
WO2020192070A1
WO2020192070A1 PCT/CN2019/109433 CN2019109433W WO2020192070A1 WO 2020192070 A1 WO2020192070 A1 WO 2020192070A1 CN 2019109433 W CN2019109433 W CN 2019109433W WO 2020192070 A1 WO2020192070 A1 WO 2020192070A1
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WIPO (PCT)
Prior art keywords
air
heat exchanger
fresh air
air conditioner
indoor
Prior art date
Application number
PCT/CN2019/109433
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
胡宽宏
王美
梁义庚
黄锦伦
金海元
王朝新
陈圣文
Original Assignee
珠海格力电器股份有限公司
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Publication date
Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Priority to EP19920963.6A priority Critical patent/EP3879192B1/de
Publication of WO2020192070A1 publication Critical patent/WO2020192070A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • 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
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus

Definitions

  • This application belongs to the technical field of air conditioner cleaning, and specifically relates to an air conditioner cleaning device, cleaning method, and air conditioner.
  • the existing air conditioner cleaning method is to achieve the cleaning of the air conditioner by condensation-defrosting, but the condensation process is mainly completed by condensing the water vapor in the indoor air.
  • the air conditioner When the air conditioner is running in a dry environment, there is less moisture in the air. , Can not meet the water demand for condensation, resulting in slow condensation speed, and the cleaning function of the air conditioner is restricted.
  • the air conditioner When the existing air conditioner indoor unit is cleaned, during the frosting process, the air conditioner operates in the cooling mode, and the indoor heat exchanger absorbs heat. The moisture in the air condenses and frosts on the surface of the indoor heat exchanger. During this process, the frosted air is condensed. The circulating air is directly taken from the air conditioner itself. The circulating air is the indoor circulating air. However, in winter, the indoor air temperature is higher than that of the outdoor. The direct blowing of high-temperature wind will reduce the rate of frosting and even reduce the frost on the surface of the indoor heat exchanger. The ice melted and fell off. During the defrosting process, the air conditioner switches to heating mode, and the indoor heat exchanger dissipates heat and melts the frost on its surface. However, in summer, the indoor air temperature is lower than that of the outdoors, and low temperature wind blowing in will reduce the defrosting rate, even Freeze the frost again.
  • the prior art air conditioner cleaning device has a problem of low cleaning efficiency.
  • the present application provides an air conditioner cleaning device, a cleaning method, and an air conditioner.
  • the air conditioner includes a heat exchanger, and the air conditioner cleaning device includes:
  • Fresh air blower the fresh air blower can deliver fresh air to the room, and can send air to the heat exchanger.
  • the heat exchanger includes an indoor heat exchanger, and the fresh air blower can be used to blow air to the indoor heat exchanger.
  • the fresh air fan is provided with a fresh air channel and an air outlet channel, and the fresh air fan has at least the following working modes:
  • the air After the air enters the new fan through the fresh air channel, it flows through the air outlet channel and is transported to the indoor heat exchanger.
  • the fresh air duct is connected with an outdoor fresh air pipe and/or a first indoor return air pipe; the outdoor fresh air pipe is connected to the outside and is used to introduce fresh air from the outside, and the first indoor return air pipe is connected to the room and is used for Introduce return air from the room.
  • the air conditioner cleaning device further includes a humidifying component, and the humidifying component is used to increase the humidity of the fresh air blower to the indoor heat exchanger.
  • the humidifying component includes a humidifying device and a water storage tank, the humidifying device is arranged in the fresh air passage, the humidifying device is used to increase the humidity of the air flowing through the fresh air passage, and the water storage tank is used to provide a water source to the humidifying device.
  • the humidifying device includes any one or more of a humidifying membrane, a permeable membrane, and an atomizer.
  • the air conditioner further includes a water receiving tray, and the air outlet passage runs through the water receiving tray to supply air to the indoor heat exchanger.
  • a waterproof baffle is provided in the water receiving pan, and the waterproof baffle is used to prevent condensed water from entering the air outlet channel.
  • the waterproof baffle is installed above the air outlet channel through a supporting column.
  • the edge of the air outlet channel is also provided with a water retaining edge protruding from the bottom of the water receiving tray.
  • the drain pan is provided with a drain hole and an overflow hole; the drain hole is connected to the drain pipe.
  • the end of the drain pipe includes a water storage tank drain pipe, the water storage tank drain pipe is connected to the water storage tank, and the water storage tank drain pipe injects the condensed water in the water receiving tray into the water storage tank.
  • the end of the drain pipe further includes an outdoor drain pipe, the outdoor drain pipe is connected to the outdoors, and the outdoor drain pipe drains the condensed water in the drain pan to the outdoors.
  • the drain pipe is provided with a drain solenoid valve, and the drain solenoid valve controls whether the condensed water in the drain pan flows into the water storage tank drain pipe and/or the outdoor drain pipe.
  • a filter purification device is provided on the drain pipe of the water storage tank, and the filter purification device filters the condensed water.
  • the water storage tank is also provided with an artificial water injection port, which is used to add water to the water storage tank.
  • the auxiliary temperature adjustment component is further included, and the auxiliary temperature adjustment component is arranged in the fresh air passage for adjusting the temperature of the air flowing through the fresh air passage.
  • the auxiliary temperature adjustment component includes one or two of a semiconductor refrigeration chip and an electric heating element.
  • the air conditioner further includes an outdoor heat exchanger, and the fresh air blower is also provided with an exhaust air passage, which is used for the fresh air blower to supply air to the outdoor heat exchanger.
  • the fresh air fan is provided with a mounting box, the fresh air channel and the exhaust air channel are arranged in the mounting box, and the fresh air channel and the exhaust air channel are separated by a fixed partition.
  • the semiconductor refrigeration fins are arranged on the fixed partitions, and the two ends of the semiconductor refrigeration fins are respectively placed in the fresh air channel and the exhaust channel; after the semiconductor refrigeration fin is energized, one end cools and the other end heats; the direction of the current is changed, The cooling end and the heating end are interchanged.
  • the fresh air blower is also provided with an exhaust duct, the fresh air duct is connected with a fresh air duct, the fresh air duct is connected to the outside, and the exhaust duct is connected with a second indoor return duct and an exhaust duct, and the second indoor return air
  • the air inlet of the pipe is connected to the room
  • the air outlet of the second indoor return air pipe is connected to the fresh air channel
  • the exhaust pipe is connected to the outdoor heat exchanger to supply air to the outdoor heat exchanger.
  • the fresh air channel and the exhaust air channel are arranged in the installation box and separated by a movable partition; the movable partition is opened, the fresh air channel is connected with the exhaust channel, and the indoor air passes through the second indoor return air duct, The exhaust passage enters the fresh air passage, the movable partition is closed, the fresh air passage is separated from the exhaust passage, and the indoor air is discharged to the outside through the second indoor return duct, exhaust duct, and exhaust duct.
  • a cleaning method is implemented using the above-mentioned air conditioner cleaning device.
  • the heat exchanger when the heat exchanger includes an indoor heat exchanger, it includes:
  • the air conditioner is running in the cooling mode and enters the frosting process of the indoor heat exchanger;
  • the fresh air blower is running to send air to the indoor heat exchanger to accelerate the frosting of the indoor heat exchanger;
  • Defrosting process The air conditioner runs under heating conditions and enters the defrosting process of the indoor heat exchanger; the fresh air blower operates to send air to the indoor heat exchanger to speed up the defrosting of the indoor heat exchanger.
  • the heat exchanger when the heat exchanger includes an indoor heat exchanger, it includes:
  • the air conditioner is running in the cooling mode and enters the frosting process of the indoor heat exchanger;
  • the fresh air blower is running to send air to the indoor heat exchanger to accelerate the frosting of the indoor heat exchanger;
  • the air conditioner is running under heating conditions to defrost the indoor heat exchanger.
  • the heat exchanger when the heat exchanger includes an indoor heat exchanger, it includes:
  • the air conditioner is running under refrigerating conditions to frost the indoor heat exchanger
  • Defrosting process The air conditioner runs under heating conditions and enters the defrosting process of the indoor heat exchanger; the fresh air blower operates to send air to the indoor heat exchanger to speed up the defrosting of the indoor heat exchanger.
  • the cleaning method further includes: during the frosting process, the humidifying component is operated to increase the humidity of the fresh air blower.
  • the fresh air blower operates and the steps of supplying air to the indoor heat exchanger include:
  • the fresh air blower When T inside ⁇ T outside , the fresh air blower introduces return air from the room through the first indoor return air duct or the second indoor return air duct.
  • the fresh air blower is running and the steps of supplying air to the indoor heat exchanger include:
  • the fresh air blower When T inside > T outside , the fresh air blower introduces return air from the room through the first indoor return air duct or the second indoor return air duct.
  • the cleaning method further includes: during the frosting process, starting the auxiliary temperature adjustment component to reduce the temperature of the fresh air blower to the indoor heat exchanger.
  • the cleaning method further includes: during the defrosting process, starting the auxiliary temperature adjustment component to increase the temperature of the fresh air blower to the indoor heat exchanger.
  • An air conditioner adopts the above-mentioned air conditioner cleaning device.
  • the air conditioner cleaning device, cleaning method, and air conditioner provided in this application have at least the following beneficial effects:
  • This application can be used for the self-cleaning of outdoor heat exchangers. It adopts the form of frosting and defrosting to clean the surface of the heat exchanger and automatically cleans. It has no loss to equipment, high cleaning efficiency and good cleaning effect.
  • the dual-channel selective air induction of the fresh air blower makes full use of the temperature difference between indoor and outdoor air.
  • frosting choose lower temperature air and when defrosting, choose higher temperature air to speed up the frosting and defrosting process and improve the air conditioner's performance.
  • Self-cleaning efficiency is the highest temperature air to speed up the frosting and defrosting process and improve the air conditioner's performance.
  • the humidification and cooling of the frosting airflow and the heating of the defrosting airflow are realized, which can speed up the frosting and defrosting process and improve the self-cleaning efficiency of the air conditioner.
  • Figure 1 is a schematic structural diagram of a cleaning device for an air conditioner according to Embodiment 1 of the application;
  • FIG. 2 is a schematic diagram of a partial structure of a cleaning device for an air conditioner according to Embodiment 1 of the application;
  • FIG. 3 is a schematic structural diagram of a cleaning device for an air conditioner according to Embodiment 2 of the application;
  • FIG. 4 is a schematic structural diagram of an outdoor heat exchanger of an air conditioner cleaning device according to an embodiment of the application.
  • FIG. 5 is a schematic diagram of the structure of the water receiving tray of the air conditioner cleaning device according to the embodiment of the application;
  • FIG. 6 is a schematic diagram of the structure of the water receiving tray and the indoor evaporator of the air conditioner cleaning device according to the embodiment of the application.
  • an air conditioner cleaning device is provided in Embodiment 1 of the present application.
  • the air conditioner includes a heat exchanger, and the air conditioner cleaning device includes a fresh air blower 1, which can deliver fresh air to the room. And can send air to the heat exchanger.
  • the air conditioner cleaning device of this embodiment adopts the form of frosting and defrosting to perform self-cleaning of the air conditioner heat exchanger.
  • the cleaning device of this embodiment uses a fresh air blower to supply air during the frosting and defrosting process of the heat exchanger, and does not rely on the air circulation circuit of the air conditioner itself.
  • the fresh air blower can choose to draw air from indoor or outdoor to create more favorable conditions for the frosting or defrosting of the heat exchanger, thereby improving the quality and efficiency of the frosting and defrosting of the heat exchanger, and improving the self-cleaning of the heat exchanger Effect and efficiency.
  • air supply through the new fan is more conducive to humidification and temperature adjustment of frosting or defrosting wind, and further improving the quality and efficiency of frosting and defrosting.
  • the heat exchanger includes an indoor heat exchanger 2 (ie, an evaporator), and the fresh fan 1 can blow air to the indoor heat exchanger 2.
  • the air conditioner cleaning device is used for self-cleaning of the indoor heat exchanger 2.
  • the fresh air blower 1 is provided with a fresh air passage 4 and an air outlet passage 5.
  • the fresh air passage 4 is used for the fresh air blower 1 to enter air
  • the air outlet passage 5 is used for the fresh air blower 1 to send air to the indoor heat exchanger 2.
  • the fresh air blower 1 has at least the following working modes: air enters the fresh air blower 1 through the fresh air passage 4, and then flows through the air outlet passage 5 to be transported to the indoor heat exchanger 2, and the air can enter the room after passing through the indoor heat exchanger 2.
  • fresh air fans are often used for air purification independent of air conditioners. They can circulate indoor air, maximize indoor air replacement, and make up for the inability of ordinary air conditioners to introduce fresh air into the room. .
  • the fresh air blower 1 of this embodiment introduces air into the fresh air passage 4 and then blows the air to the indoor heat exchanger 2 from the air outlet passage 5.
  • the air conditioner may further include a water receiving pan 10, which is used for collecting and storing condensed water generated during normal operation of the heat exchanger of the air conditioner.
  • the air outlet channel 5 can penetrate the water receiving tray 10 to send air to the indoor heat exchanger 2.
  • the edge of the air outlet channel 5 is provided with a leak-proof structure to prevent the condensed water in the drain pan 10 from leaking into the fresh fan 1.
  • the fresh air duct 4 is connected with an outdoor fresh air pipe 6 and/or a first indoor return air pipe 7; the outdoor fresh air pipe 6 is connected to the outside and is used to introduce fresh air from outside, and the first indoor return air pipe 7 is connected Indoor, used to introduce return air from indoor.
  • the fresh air passage 4 is the air inlet of the fresh air blower 1, and the outdoor fresh air duct 6 and the first indoor return air duct 7 are the two air introduction directions.
  • the frosting of indoor heat exchanger 2 is not only affected by air humidity, but also by air temperature. High air temperature is not conducive to frosting, and even high-temperature air will delay the frosting process and blow the frost layer on the surface of the heat exchanger. Change, blow off. On the contrary, low air temperature is not conducive to defrosting. Therefore, in this embodiment, the suitability of the ambient temperature is fully considered.
  • the fresh air blower 1 is provided with two indoor and outdoor air inlets, and it is possible to determine which side to draw air from according to the indoor and outdoor ambient temperature and air humidity.
  • the air conditioner cleaning device in this embodiment also includes a humidifying component 3 for increasing the humidity of the air supplied by the fresh air blower 1.
  • the moisture in the air blown to the indoor heat exchanger 2 increases, and the surface condensation of the indoor heat exchanger 2 increases, which can accelerate the indoor Frosting of heat exchanger 2.
  • the humidifying component 3 includes a humidifying device 9 and a water storage tank 8.
  • the humidifying device 9 is installed in the fresh air passage 4.
  • the humidifying device 9 includes any one or more of a humidifying membrane, a permeable membrane, and an atomizer.
  • the humidifying device 9 is used to increase the humidity of the air flowing through the fresh air passage 4, and the water storage tank 8 is used to provide a water source to the humidifying device 9.
  • the water storage tank 8 can be made into two water supply modes: internal circulation water supply and external injection water supply.
  • the internal circulation water supply mode relies on the condensate dripping from the heat exchanger. Please also refer to FIG. 5.
  • a water receiving tray 10 is arranged under the indoor heat exchanger 2, and the air outlet channel 5 penetrates the water receiving tray 10 to supply air to the indoor heat exchanger 2.
  • a waterproof baffle 22 is provided in the water receiving tray 10, and the waterproof baffle 22 is used to prevent condensation water from entering the air outlet channel 5.
  • the waterproof baffle 22 is installed above the air outlet channel 5 through the supporting column 23, and the condensation water on the surface of the indoor heat exchanger 2 falls on the waterproof baffle 22.
  • the waterproof baffle 22 can be set with a slope with one side high and the other low. , Easy to drain.
  • the edge of the air outlet channel 5 is also provided with a water retaining edge 24 protruding from the bottom of the water receiving tray 10.
  • the water retaining edge 24 can prevent the water in the water receiving tray 10 from pouring into the air outlet channel 5.
  • a drain hole 25 and an overflow hole 26 are also provided inside the water receiving tray 10; the drain hole 25 is connected to the drain pipe 11, and the condensed water is recovered to the water storage tank 8 or directly discharged outdoors.
  • the overflow hole 26 is used to drain the condensed water when the drain hole 25 is blocked, and its drain is set higher than the drain hole 25 so that the condensed water enters the drain hole 25 preferentially.
  • the end of the drain pipe 11 includes a water storage tank drain pipe 12, the water storage tank drain pipe 12 is connected to the water storage tank 8, and the water storage tank drain pipe 12 injects the condensed water in the water receiving tray 10 into the water storage tank 8.
  • the end of the drain pipe 11 also includes an outdoor drain pipe 13, which is connected to the outdoors, and the outdoor drain pipe 13 drains the condensed water in the drain pan 10 to the outside.
  • the drain pipe 11 is provided with a drain solenoid valve. The drain solenoid valve controls whether the condensed water in the drain pan 10 flows into the water storage tank drain pipe 12 and/or the outdoor drain pipe 13.
  • the drain solenoid valve preferentially controls the condensate water to pass through the water storage tank drain pipe 12
  • the water storage tank 8 is injected, and when the water storage tank 8 is full, the drain solenoid valve controls the condensed water to stop flowing into the water storage tank drain pipe 12, and instead flows to the outdoors through the outdoor drain pipe 13.
  • the air outlet channel 5 is a rectangular opening
  • the indoor heat exchanger 2 has a rectangular plate shape
  • the air outlet channel 5 may have a rectangular, circular, square, long trough shape, and the like.
  • the indoor heat exchanger 2 can be an arc-shaped arc-shaped indoor heat exchanger 27, the air outlet channel 5 adopts a long trough-type air outlet 28, and the arc-shaped indoor heat exchanger 27 is vertically arranged in the water receiving tray 10
  • the air outlet channel 5 is not within the dripping range of the condensed water of the arc-shaped indoor heat exchanger 27, and only a water retaining edge 24 is provided around the air outlet channel 5 to prevent the entry of condensate water.
  • a filter purification device is provided on the water storage tank drain pipe 12.
  • the filter purification device filters the condensate water.
  • the condensate water injected into the water storage tank 8 is purified and can be passed through the display module and program Set a timing to remind users to clean the filter purification device.
  • the water storage tank 8 is provided with an artificial water injection port, which is used to add water to the water storage tank 8.
  • the water storage tank 8 can also be designed as a detachable structure, and the water storage tank 8 can be removed when filling water.
  • the water storage tank 8 can also comprehensively use the above two water supply modes. Further, a water volume sensor may be provided in the water storage tank 8 to detect the water volume in the water storage tank 8, and send a control signal according to the water volume result to control the drainage solenoid valve to replenish water, or to remind manual water injection.
  • the cleaning device in order to regulate the temperature of the air supplied by the fresh air blower 1, the cleaning device further includes an auxiliary temperature adjustment assembly 14 which is arranged in the fresh air passage 4 and is used for the temperature of the air flowing through the fresh air passage 4.
  • the auxiliary temperature adjustment component 14 includes one or two of semiconductor refrigeration fins and electric heating elements.
  • the cleaning device of this embodiment can also be improved as follows while realizing self-cleaning of the outdoor heat exchanger 15.
  • the fresh air blower 1 is further provided with an exhaust air passage 16 which is used for the fresh air blower 1 to send air to the outdoor heat exchanger 15.
  • the air inlet of the fresh air blower 1 is provided with a mounting box 20.
  • the fresh air channel 4 and the exhaust air channel 16 are both arranged in the mounting box.
  • the fresh air channel 4 and the exhaust air channel 16 are separated by a fixed partition 21, and the fresh air channel 4 and the exhaust air The channels 16 do not communicate with each other.
  • Corresponding humidification components 3 and auxiliary temperature adjustment components 14 can also be arranged in the exhaust duct 16 to increase the humidity of the frosting wind of the outdoor heat exchanger 15, reduce the temperature of the frosting wind, accelerate the frosting of the outdoor heat exchanger 15, or increase The temperature of the defrosting wind speeds up the defrosting of the outdoor heat exchanger 15.
  • the semiconductor refrigeration sheet is arranged on the fixed partition 21, and the two ends of the semiconductor refrigeration sheet are respectively placed in the fresh air channel 4 and the exhaust channel 16; according to the characteristics of the semiconductor refrigeration sheet (that is, the semiconductor material Tie effect). After the semiconductor refrigeration chip is energized, one end is cooled and the other end is heated; changing the direction of the current, the cooling end and the heating end are interchanged.
  • the indoor heat exchanger 2 When the indoor heat exchanger 2 is frosted, the semiconductor refrigeration fins in the fresh air channel 4 cool, and the fresh air temperature is reduced; when defrosting, the current direction of the semiconductor refrigeration fins changes, and the semiconductor refrigeration fins heat; similarly, the outdoor heat exchanger 15 is frosted When the semiconductor refrigeration fins cool, when defrosting, the semiconductor refrigeration fins heat.
  • the air conditioner self-cleaning device of this embodiment uses a fresh air blower to achieve selective air induction, achieves high-efficiency frosting and defrosting with minimal energy consumption, improves the cleaning efficiency of the air conditioner, and has a shorter cleaning cycle.
  • the humidification component increases the air humidity to improve the frosting efficiency, and the indoor unit condensate is recycled and humidified to accelerate the frosting.
  • the air intake on the indoor side can be designed in the exhaust system, and the air exhaust system directly removes the indoor air from the outdoors.
  • the existing structure of the fresh air blower 1 can be fully utilized to realize the fresh air blower 1 from the room. Of the wind.
  • the fresh air blower 1 of the second embodiment of the present application is further provided with an exhaust air duct 16, the fresh air duct 4 is connected to an outdoor fresh air duct 6, the outdoor fresh air duct 6 is connected to the outdoors, and the fresh air duct 1 passes through the outdoor fresh air duct 6 Introduce fresh air from outside.
  • the exhaust channel 16 is connected with a second indoor return air pipe 17 and an exhaust pipe 18.
  • the air inlet of the second indoor return air pipe 17 is connected to the room, and the air outlet is connected to the fresh air channel 4, and the second indoor return air pipe 17 can The indoor air is introduced into the fresh air blower 1; the exhaust pipe 18 is connected to the outdoor heat exchanger 15 to supply air to the outdoor heat exchanger 15.
  • the fresh air passage 4 and the exhaust air passage 16 are arranged in the installation box and separated by a movable partition 19; the movable partition 19 is opened, the fresh air passage 4 and the exhaust passage 16 are connected, and the indoor air passes through the second indoor return air duct 17 , The exhaust air passage 16 enters the fresh air passage 4, the movable partition 19 is closed, the fresh air passage 4 is separated from the exhaust passage 16, and the indoor air is discharged to the outside through the second indoor return duct 17, the exhaust duct 16, and the exhaust duct 18. .
  • the outdoor fresh air pipe 6, the first indoor return air pipe 7, the second indoor return air pipe 17, and the exhaust air pipe 18 in the first and second embodiments can all be equipped with electromagnetic valves to control on and off.
  • the air conditioner cleaning device of this embodiment uses the existing structure of the fresh air blower to controllably connect the fresh air channel and the exhaust air channel through a movable structure, which can realize the cleaning work of the indoor heat exchanger and the outdoor heat exchanger without causing problems. Destroy the structure of the new fan to ensure the realization of the inherent performance of the new fan.
  • the present application also provides a cleaning method using the above-mentioned air conditioner cleaning device.
  • the cleaning method includes:
  • Step one is to receive a cleaning instruction; the cleaning instruction can be issued by manual control, or it can be issued periodically after the air conditioner autonomously monitors the operating time.
  • the cleaning instruction can be issued by manual control, or it can be issued periodically after the air conditioner autonomously monitors the operating time.
  • Step two frosting process: control the air conditioner to run in the cooling mode and enter the frosting process of the indoor heat exchanger 2. At this time, the surface temperature of the indoor heat exchanger 2 is below zero, and the moisture in the air condenses on its surface;
  • the fresh air blower 1 When T inside > T outside , such as in winter, the fresh air blower 1 introduces fresh air from the outside through the outdoor fresh air duct 6.
  • the fresh air blower 1 When T inside ⁇ T outside , such as summer, the fresh air blower 1 introduces return air from the room through the first indoor return air duct 7 or the second indoor return air duct 17.
  • the humidifying component 3 operates to increase the humidity of the air supplied by the fresh air blower 1, and the auxiliary temperature adjustment component 14 is activated to reduce the temperature of the air supplied by the fresh air machine 1 and accelerate the frosting of the indoor heat exchanger 2.
  • Step three check the frosting result.
  • the frosting result can be judged by detecting the temperature of the inner tube of the indoor heat exchanger 2 or monitoring the cooling operation time. Specifically, the inner tube temperature reaches the lower limit temperature of frosting, such as -18°C ⁇ 20°C, or the cooling operation time reaches the set time , Such as 180s, when the above conditions are reached, it can be judged that the frosting is complete.
  • Step four defrosting process: the air conditioner runs under heating conditions and enters the defrosting process of the indoor heat exchanger 2; when cleaning the indoor unit, the air deflector needs to be adjusted in advance to avoid direct blowing on the human body.
  • the fresh air blower 1 runs and sends air to the indoor heat exchanger 2 to accelerate the defrosting of the indoor heat exchanger 2, and compare the indoor temperature T inside with the outdoor temperature T outside ;
  • fresh air blower 1 When T inside ⁇ T outside , such as summer, fresh air blower 1 introduces fresh air from outside through outdoor fresh air duct 6;
  • the fresh air blower 1 When T inside > T outside , such as in winter, the fresh air blower 1 introduces return air from the room through the first indoor return air duct 7 or the second indoor return air duct 17.
  • the auxiliary temperature adjustment component 14 is activated to increase the temperature of the air supplied by the fresh fan 1.
  • the defrosting process can also be judged by detecting the temperature of the inner tube or monitoring the heating running time. Specifically, the inner tube temperature reaches the upper defrosting temperature of 50°C or the heating running time is 360 to 600s.
  • the fresh air blower may only participate in one of the processes of frosting or defrosting, or may participate in both processes of frosting or defrosting.
  • the cleaning method of this embodiment can use the air conditioner cleaning device of the present application to realize the cleaning of indoor heat exchangers or indoor heat exchangers, with high cleaning efficiency, energy saving and environmental protection.
  • An air conditioner adopts the air conditioner cleaning device of the present application.

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