CN109237638B - Outdoor unit capable of removing filth blockage of heat exchanger and control method - Google Patents

Outdoor unit capable of removing filth blockage of heat exchanger and control method Download PDF

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Publication number
CN109237638B
CN109237638B CN201810948543.4A CN201810948543A CN109237638B CN 109237638 B CN109237638 B CN 109237638B CN 201810948543 A CN201810948543 A CN 201810948543A CN 109237638 B CN109237638 B CN 109237638B
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CN
China
Prior art keywords
heat exchanger
fan
brush
guide rail
fins
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CN201810948543.4A
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Chinese (zh)
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CN109237638A (en
Inventor
黄昌成
桂涛
田宇
柯彬彬
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201810948543.4A priority Critical patent/CN109237638B/en
Publication of CN109237638A publication Critical patent/CN109237638A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14Heat exchangers specially adapted for separate outdoor units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32Responding to malfunctions or emergencies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28GCLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00Non-rotary, e.g. reciprocated, appliances
    • F28G1/02Non-rotary, e.g. reciprocated, appliances having brushes

Abstract

The invention provides an outdoor unit capable of removing filth blockage of a heat exchanger and a control method, wherein the outdoor unit comprises: a heat exchanger (1) and a fan (2); the cleaning device (3) can be driven by the fan (2) to move so as to clean the heat exchanger (1). The invention effectively solves the problem that the dirt of the heat exchanger of the outdoor unit of the air conditioner is difficult to remove, ensures that the air conditioning system can normally exchange heat, and ensures that the running performance of the air conditioning system can be kept stable for a long time. When removing dirt, can remove dirt without shutting down, realize the effect of removing dirt without shutting down, improved user's travelling comfort.

Description

Outdoor unit capable of removing filth blockage of heat exchanger and control method
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an outdoor unit capable of removing filth blockage of a heat exchanger and a control method.
Background
At present, a fin heat exchanger is mostly adopted in an air conditioning system as a main heat exchange part, and the gaps among fins are small, so that filth blockage is easy to occur. Especially, the outdoor unit has more dust in the air, so that the fins are easy to be fouled to cause the reduction of the heat exchange effect of the fins, the overall performance of an air conditioning system is influenced, and the outdoor unit is difficult to clean because the outdoor unit is close to a building wall when being installed.
The existing users basically do not require an air conditioner cleaner to clean the fins of the air conditioner external unit, so that the construction difficulty is high, the cost is high, and the fins need to be cleaned regularly. Therefore, the automatic cleaning device for the fin heat exchanger is designed, and the problem of filth blockage removal of the fin heat exchanger of the air conditioner outdoor unit can be solved.
Patent No. CN202392903U issued in prior art patent of outdoor unit of air conditioner and air conditioner discloses a defrosting device, which uses a driving device to drive a cleaning brush to remove frost on a heat exchanger. The device is only used for removing frost layer, cannot be used for removing dirt of fins, and the driving device is driven independently. Patent No. CN102564215B issued in the prior art of "cleaning device for heat exchanger and air conditioner having the same" discloses a method for cleaning a heat exchanger by spraying cleaning water onto the heat exchanger, wherein the cleaning effect is inferior to that of cleaning with a brush, except that the cleaning water is sprayed onto the heat exchanger.
the invention provides an outdoor unit capable of removing filth blockage of a heat exchanger and a control method, which are researched and designed for solving the technical problems that the fin heat exchanger of the outdoor unit of the air conditioner in the prior art is easy to get filth, so that the heat exchange effect of fins is reduced, the filth is difficult to clean, the overall performance of an air conditioning system is influenced and the like.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the heat exchanger of the outdoor unit of the air conditioner in the prior art is difficult to remove dirt, so as to provide an outdoor unit and a control method capable of removing dirt blockage of the heat exchanger.
The invention provides an outdoor unit capable of removing filth blockage of a heat exchanger, which comprises:
A heat exchanger and a fan;
and the cleaning device can be driven by the fan to move so as to clean the heat exchanger.
preferably, the first and second electrodes are formed of a metal,
The cleaning device comprises a brush capable of moving along the extending direction of the heat exchanger, the heat exchanger is a finned heat exchanger and comprises fins, and the brush can move to clean the fins of the finned heat exchanger.
Preferably, the first and second electrodes are formed of a metal,
the brush is attached to the wall surface of the heat exchanger, and the shape of the brush is matched with that of the wall surface of the heat exchanger.
Preferably, the first and second electrodes are formed of a metal,
The cleaning device further comprises a power guide rail which is arranged on the heat exchanger and extends along the extending direction of the heat exchanger, the power guide rail is connected with the brush, and the power guide rail can be driven by the fan to further drive the brush to move.
preferably, the first and second electrodes are formed of a metal,
the fan is a reversible fan, the power guide rail cannot be driven to move when the fan rotates forwards, and the power guide rail can be driven to move when the fan rotates backwards.
preferably, the first and second electrodes are formed of a metal,
when the fan rotates reversely, the wind can be blown out towards the heat exchanger.
Preferably, the first and second electrodes are formed of a metal,
the reversible fan further comprises a motor support, fan blades and a reversible motor, wherein the reversible motor is arranged on the motor support, one end of the reversible motor is connected with the fan blades, and the other end of the reversible motor is connected with the power guide rail.
preferably, the first and second electrodes are formed of a metal,
the power guide rail comprises a flywheel and a chain, the flywheel is connected with the other end of the reversible motor, the chain is connected with the brush, the flywheel does not drive the chain to move when the reversible motor rotates forwards, and the flywheel drives the chain to move to drive the brush to move when the reversible motor rotates backwards.
Preferably, the first and second electrodes are formed of a metal,
The cleaning device further comprises a first guide rail and a second guide rail, the first guide rail is connected with one end of the heat exchanger, the second guide rail is connected with the other end of the heat exchanger, one end of the brush is clamped in the first guide rail, the other end of the brush is clamped in the second guide rail, and therefore the brush can slide along the guide directions of the first guide rail and the second guide rail.
preferably, the first and second electrodes are formed of a metal,
a water tank which can be used for collecting condensed water is arranged at the lower part of the heat exchanger,
the cleaning device further comprises a communicating water pipe communicated with the inside of the water tank, a water pump connected with the communicating water pipe and an injection water pipe arranged at the upper end of the heat exchanger, wherein the injection water pipe is communicated with the communicating water pipe so as to guide collected condensed water to the injection water pipe and inject the condensed water onto the heat exchanger through the injection water pipe.
preferably, the first and second electrodes are formed of a metal,
The heat exchanger is arranged on the chassis and supported by the chassis; the water tank is connected and arranged on the chassis; when including the motor support, the motor support set up in on the water tank.
The invention also provides a control method for cleaning filth blockage of the outdoor unit heat exchanger, which is used for cleaning the filth blockage of the heat exchanger by using the outdoor unit capable of cleaning filth blockage of the heat exchanger.
preferably, the first and second electrodes are formed of a metal,
the method comprises a detection and judgment step, a detection and judgment step and a judgment step, wherein the detection and judgment step is used for detecting and judging whether the fins of the heat exchanger are dirty and blocked;
A control step, when the fan is a reversible fan and the fins of the heat exchanger are detected and judged to be dirty and blocked, the fan is controlled to be reversed, the brush is started to move so as to clean the fins of the heat exchanger, and the fan blows air towards the heat exchanger; and when detecting and judging that the heat exchanger fin is not dirty and blocked, controlling the fan to rotate forward, enabling the brush not to move, and enabling the fan to blow towards the direction departing from the heat exchanger.
Preferably, the first and second electrodes are formed of a metal,
and after the brush moves for T1 time, starting a water pump to supply water to the water injection pipe so as to clean the fins of the heat exchanger, and after the water pump is started for T2 time, closing the water pump and stopping the cleaning action on the fins of the heat exchanger.
preferably, the first and second electrodes are formed of a metal,
when the brush cleans the fins of the heat exchanger, controlling the water tank to stop collecting the condensed water of the heat exchanger; and when the fins of the heat exchanger are not cleaned, controlling the water tank to be opened to collect condensed water of the heat exchanger.
The outdoor unit capable of clearing heat exchanger filth blockage and the control method provided by the invention have the following beneficial effects:
1. according to the invention, the cleaning device capable of being driven by the fan is arranged, and the cleaning device can be driven to clean the heat exchanger when the fan runs, so that dirt on the fin heat exchanger of the air conditioner outdoor unit is effectively removed, the heat exchanger is prevented from being clogged, the problem that the dirt of the heat exchanger of the air conditioner outdoor unit is difficult to remove is effectively solved, the normal heat exchange of the air conditioner system is ensured, and the running performance of the air conditioner system can be maintained stably for a long time. While removing dirt, the dirt can be removed without stopping the machine, so that the effect of removing dirt without stopping the machine is realized, and the use comfort of a user is improved;
2. The brush is arranged on the fin heat exchanger, and the brush is driven by the output power of the fan to scrape off dirt and foreign matters on the fins; recovered condensed water is sprayed on the fins to further clean the fins, and meanwhile, reverse air blowing is performed in cooperation with a reverse fan to blow dirty and blocked foreign matters among the fins out.
Drawings
fig. 1 is a schematic structural view of an outdoor unit capable of removing filth from a heat exchanger according to the present invention;
Fig. 2 is a control schematic diagram of an outdoor unit capable of removing filth in a heat exchanger according to the present invention.
The reference numbers in the figures denote:
1. A heat exchanger; 2. a fan; 21. a motor bracket; 22. a fan blade; 23. a reversible motor; 3. a cleaning device; 30. a brush; 31. a first guide rail; 32. a second guide rail; 33. a power rail; 41. a water tank; 42. the water pipe is communicated; 43. a water pump; 44. a spray water pipe; 5. a chassis.
Detailed Description
As shown in fig. 1-2, the present invention provides an outdoor unit capable of removing filth blockage of a heat exchanger, comprising:
A heat exchanger 1 and a fan 2;
And the cleaning device 3 can be driven by the fan 2 to move so as to clean the heat exchanger 1. According to the invention, the cleaning device capable of being driven by the fan is arranged, and the cleaning device can be driven to clean the heat exchanger when the fan runs, so that dirt on the fin heat exchanger of the air conditioner outdoor unit is effectively removed, the heat exchanger is prevented from being clogged, the problem that the dirt of the heat exchanger of the air conditioner outdoor unit is difficult to remove is effectively solved, the normal heat exchange of the air conditioner system is ensured, and the running performance of the air conditioner system can be maintained stably for a long time. When removing dirt, can remove dirt without shutting down, realize the effect of removing dirt without shutting down, improved user's travelling comfort.
Preferably, the first and second electrodes are formed of a metal,
The cleaning device 3 comprises a brush 30 which is movable along the extension direction of the heat exchanger 1 (preferably the extension direction is the height direction), the heat exchanger 1 is a finned heat exchanger and comprises fins, and the brush 30 is movable to clean the fins of the finned heat exchanger. The cleaning device is a specific preferred structural form of the cleaning device, namely, the brush is adopted and can move along the extension direction of the heat exchanger, so that the brush preferably moves along the height direction (up-and-down movement) of the heat exchanger to clean the fins of the heat exchanger, the cleaning effect on the fins of the heat exchanger can be improved, the filth blockage of the fins of the heat exchanger is effectively removed, the automatic cleaning effect can be realized by driving the heat exchanger by the fan, and the service life of the heat exchanger is prolonged.
preferably, the first and second electrodes are formed of a metal,
as shown in fig. 2, the brush 30 is attached to the wall surface of the heat exchanger 1, and the shape of the brush 30 is adapted to the shape of the wall surface of the heat exchanger 1. This is a particularly preferred form of construction of the brush according to the invention, since the heat exchanger is shaped in a substantially L-shaped cross-section, the brush can preferably be arranged in a strip shape also substantially L-shaped, extending from one end of the heat exchanger to the other, i.e. from the left end to the right end of the heat exchanger, which enables effective cleaning of the heat exchanger from the left end to the right end during its up-and-down movement, further improving the cleaning effect of the dirt plug.
Preferably, the first and second electrodes are formed of a metal,
the cleaning device 3 further comprises a power guide rail 33 which is arranged on the heat exchanger 1 and extends along the extending direction of the heat exchanger 1, the power guide rail 33 is connected with the brush 30, and the power guide rail 33 can be driven by the fan 2 to further drive the brush 30 to move. The power guide rail is fixedly connected with the brush, the power guide rail is in sliding connection with the heat exchanger, the power guide rail slides on the heat exchanger to drive the brush to do up-and-down cleaning movement, so that power is effectively transmitted, and the brush is driven to move.
Preferably, the first and second electrodes are formed of a metal,
The fan 2 is a reversible fan, and when the fan 2 rotates forwards, the power guide rail 33 cannot be driven to move, and when the fan 2 rotates backwards, the power guide rail 33 can be driven to move. The fan adopts a reversible fan, the reversible fan can rotate forwards and reversely, the air enters the fan from the heat exchanger and is blown out again when the fan rotates forwards, the air is blown out from one side of the heat exchanger when the fan rotates reversely, the power guide rail is not driven to move when the fan rotates forwards and the fan rotates reversely, so that the fan can move uncleanly without a brush when heating normally or refrigerating normally, and can be cleaned when dirty blockage is serious and the fan needs to be cleaned, and the outdoor unit does not need to be closed at the moment, and does not need to be stopped when dirty is removed, thereby realizing the effect of removing the dirty without stopping the machine. When removing dirty, because of the fan can reverse the operation, consequently remove dirty while the unit need not to shut down.
preferably, the first and second electrodes are formed of a metal,
When the fan 2 is reversed, the wind can be blown out toward the heat exchanger 1. Can also blow off wind towards the direction of heat exchanger through the fan reversal, can make can not only clean the heat exchanger through the brush when the fan reverses outside, can also blow out the impurity such as the dust that will clean out or on the fin through blowing of fan and blow off the off-premises station, further improved clear effect effectively, improved the cleanliness factor.
When the reversible motor rotates forwards, the power guide rail cannot be driven to operate. When dirt and filth on the fins need to be cleaned, the motor can reversely rotate to drive the power guide rail to rotate. When the power guide rail runs, the brush is driven to move up and down, the left guide rail and the right guide rail ensure that the brush runs up and down stably, and dirt on the fins is cleaned.
preferably, the first and second electrodes are formed of a metal,
The reversible fan further comprises a motor support 21, fan blades 22 and a reversible motor 23, wherein the reversible motor 23 is arranged on the motor support 21, one end of the reversible motor 23 is connected with the fan blades 22, and the other end of the reversible motor 23 is connected with the power guide rail 33.
The fan is characterized in that the motor support is used for supporting the motor and the fan blades, the motor is used for controlling whether the fan blades can rotate forwards or backwards, one end of two ends of the motor is connected with the fan blades and can drive the fan blades to rotate, the other end of the motor is connected with the power guide rail and can drive the power guide rail to move, and the brush is driven to move to complete the cleaning function.
Preferably, the first and second electrodes are formed of a metal,
the power rail 33 includes a flywheel and a chain, the flywheel is connected to the other end of the reversible motor 23, the chain is connected to the brush 30, the flywheel does not drive the chain to move when the reversible motor 23 rotates forward, and the flywheel drives the chain to move to drive the brush 30 to move when the reversible motor 23 rotates backward. The power guide rail is preferably in a specific structural form, the flywheel is connected with the reversible motor, the flywheel is connected with the chain, the chain is connected with the brush, the brush is finally driven to move through the chain, the structural form of the flywheel and the chain is adopted for transmission, the flywheel cannot be driven to operate when the fan rotates forwards, the flywheel can be driven to operate when the fan rotates backwards, the chain is arranged on the flywheel and connected with the brush, the chain is driven when the flywheel operates, and the brush is driven to move upwards and downwards by the chain. And further realize the technical effect that the fan is positively transmitted, can not drive the brush to move, and can only drive the brush to move by reverse rotation.
Preferably, the first and second electrodes are formed of a metal,
the cleaning device 3 further includes a first guide rail 31 connected to one end of the heat exchanger 1, and a second guide rail 32 connected to the other end of the heat exchanger 1, wherein one end of the brush 30 is engaged with the first guide rail 31, and the other end of the brush 30 is engaged with the second guide rail 32, so that the brush 30 can slide along the guide directions of the first guide rail 31 and the second guide rail 32. The guiding direction is preferably along the height direction of the heat exchanger. The first guide rail and the second guide rail can effectively guide the movement of the brush, and the phenomena of deflection and the like in the movement process are prevented.
the two tail ends of the finned heat exchanger are respectively provided with a guide rail, namely a left guide rail (a first guide rail 31) and a right guide rail (a second guide rail 32), the brushes are arranged on the left guide rail, the right guide rail and the power guide rail, when the power guide rail operates, the brushes are driven to move up and down, the left guide rail and the right guide rail ensure that the brushes stably run up and down, and dirt and dust on fins are cleaned.
Preferably, the first and second electrodes are formed of a metal,
the lower position of the heat exchanger 1 is also provided with a water tank 41 which can be used to collect the condensed water,
the cleaning device 3 further comprises a communication water pipe 42 communicated with the inside of the water tank 41, a water pump 43 connected with the communication water pipe 42, and a spray water pipe 44 arranged at the upper end of the heat exchanger 1, wherein the spray water pipe 44 is communicated with the communication water pipe 42 so as to guide the collected condensed water to the spray water pipe 44 and spray the condensed water onto the heat exchanger 1 through the spray water pipe 44.
The water tank through setting up can collect the comdenstion water effectively to through intercommunication water pipe, water pump and injection water pipe, can be effectively with the comdenstion water pump sending of collecting to the heat exchanger upper end in order to spray, carry out the cleaning action to the fin of heat exchanger, can further clean the fin effectively, the water tank is responsible for collecting the comdenstion water of interior machine or outer machine. The water pump provides power for the condensed water, the water in the water tank is conveyed to the spraying water pipe, and the water is sprayed out of the spraying water pipe and flows onto the fins to further clean the fins. The fan blade can be realized blowing dirt off the fin to the reversal motor drive.
the water tank and the fin heat exchanger are positioned on one side of the chassis, the water tank collects condensed water of the fin heat exchanger of the indoor unit or the outdoor unit, and the water tank is provided with a motor support and a small water pump. The top of the fin heat exchanger is provided with a spraying water pipe which is connected with a water pump through a communicating water pipe, the water pump is placed on the water tank, the water inlet of the water pump is directly connected with the water tank, and the water outlet of the water pump is connected with the water pipe.
Preferably, the first and second electrodes are formed of a metal,
the heat exchanger comprises a base plate 5, wherein the heat exchanger 1 is arranged on the base plate 5 and is supported by the base plate 5; the water tank 41 is connected and arranged on the chassis 5; when the motor bracket 21 is included, the motor bracket 21 is disposed on the water tank 41.
this is the preferred form of construction of the invention, and can be used to support all components such as heat exchangers, motors, water tanks, fans, etc. by virtue of the structure of the chassis, and the motor bracket is arranged on the water tank, indirectly by virtue of the supporting action of the chassis.
The invention also provides a control method for cleaning filth blockage of the outdoor unit heat exchanger, which is used for cleaning the filth blockage of the heat exchanger by using the outdoor unit capable of cleaning filth blockage of the heat exchanger. Through setting up the cleaning device that can be driven by the fan, can drive this cleaning device when running through the fan and clean the heat exchanger, effectively clear away the dirt on the outer quick-witted fin heat exchanger of air conditioner, prevent that the heat exchanger is dirty stifled, effectively solve air condensing units heat exchanger dirt and be difficult to clear away the problem, guarantee air conditioning system and can normally the heat transfer, make air conditioning system operating behavior can remain stable for a long time. When removing dirt, can remove dirt without shutting down, realize the effect of removing dirt without shutting down, improved user's travelling comfort.
Preferably, the first and second electrodes are formed of a metal,
the method comprises a detection and judgment step, a detection and judgment step and a judgment step, wherein the detection and judgment step is used for detecting and judging whether the fins of the heat exchanger are dirty and blocked;
A control step, when the fan 2 is a reversible fan and when the fins of the heat exchanger are detected and judged to be dirty and blocked, the fan is controlled to be reversed, the brush is started to move so as to clean the fins of the heat exchanger, and the fan blows air towards the heat exchanger; and when detecting and judging that the heat exchanger fins are not dirty and blocked, controlling the fan to rotate forwards, keeping the brush from moving, and blowing towards the direction departing from the heat exchanger 1 by the fan.
The invention is the preferred cleaning mode of the outdoor unit for cleaning the heat exchanger filth blockage, namely, the cleaning effect on the heat exchanger fins can be effectively controlled only by adjusting the reverse rotation of the fan when the filth blockage is realized, the normal heating or refrigeration can be kept by the forward rotation of the fan when the filth blockage is not caused, the control operation is simple and convenient, the intelligent degree is high, the filth is greatly clear, and the use comfort of users is improved.
Preferably, the first and second electrodes are formed of a metal,
and after the brush moves for T1 time, starting the water pump 43 to supply water to the spray water pipe 44 and further clean the fins of the heat exchanger, and after the water pump 43 is started for T2 time, closing the water pump 43 and stopping the cleaning action on the fins of the heat exchanger. The method is a further control step for removing the filth blockage by the movement of the brush, namely, the fins are cleaned by spraying condensed water after the cleaning time is T1, the cleaning effect is improved by the effect of cleaning and cleaning the fins in combination with the cleaning mode of the brush, the water pump is turned off after the washing is carried out for a period of time T2 to stop cleaning, the brush can be used for cleaning for a period of time T3, and then the cleaning step is turned off to recover to the normal refrigeration or heating step.
the machine set detects that the fins are dirty and blocked, a dirt removing mode is started, the motor rotates reversely, the brush moves up and down under the driving of the power guide rail to clean dirt and dirt on the fins, the time T1 is shortened, the water pump is started to convey water in the small water tank to the injection pipes, and the water flows out of the injection pipes to the fins to clean the dirt and dirt on the fins. And T2, stopping the water pump. And in the time of T3, the fan rotates forwards, and the unit exits the dirt removing mode.
preferably, the first and second electrodes are formed of a metal,
when the brush cleans the fins of the heat exchanger, controlling the water tank to stop collecting the condensed water of the heat exchanger; and when the fins of the heat exchanger are not cleaned, controlling the water tank to be opened to collect condensed water of the heat exchanger. Therefore, the collected condensed water is effectively ensured not to be dirty water flowing down during cleaning, and because the clean dirty water is dirty and does not need to be collected or has no cleaning effect, the collecting action of closing the water tank during cleaning is realized (the specific action comprises the steps of opening a water tank cover and the like); after cleaning, the condensed water is collected during normal heating or refrigeration so as to be used in other aspects such as cleaning, the recycling rate is improved, and the cleaning effect is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. an outdoor unit capable of removing filth blockage of a heat exchanger is characterized in that: the method comprises the following steps:
a heat exchanger (1) and a fan (2);
The cleaning device (3) can be driven by the fan (2) to move so as to clean the heat exchanger (1); the cleaning device (3) comprises a brush (30) capable of moving along the extending direction of the heat exchanger (1) and a power guide rail (33) which is arranged on the heat exchanger (1) and extends along the extending direction of the heat exchanger (1), the fan (2) is a reversible fan, the power guide rail (33) cannot be driven to move when the fan (2) rotates forwards, the power guide rail (33) can be driven to move when the fan (2) rotates backwards, and wind can be blown out towards the direction of the heat exchanger (1) when the fan (2) rotates backwards; the reversible fan further comprises a motor support (21), fan blades (22) and a reversible motor (23), wherein the reversible motor (23) is arranged on the motor support (21), one end of the reversible motor (23) is connected with the fan blades (22), and the other end of the reversible motor (23) is connected with the power guide rail (33);
The power guide rail (33) comprises a flywheel and a chain, the flywheel is connected with the other end of the reversible motor (23), the chain is connected with the brush (30), the chain is not driven by the flywheel to move when the reversible motor (23) rotates forwards, and the chain is driven by the flywheel to move to drive the brush (30) to move when the reversible motor (23) rotates backwards.
2. The outdoor unit of claim 1, wherein:
The heat exchanger (1) is a finned heat exchanger, comprises fins, and the brush (30) is movable to clean the fins of the finned heat exchanger.
3. the outdoor unit of claim 2, wherein:
The brush (30) is attached to the wall surface of the heat exchanger (1), and the shape of the brush (30) is matched with the shape of the wall surface of the heat exchanger (1).
4. The outdoor unit of any one of claims 1 to 3, wherein:
The cleaning device (3) further comprises a first guide rail (31) and a second guide rail (32), wherein the first guide rail (31) is connected with one end of the heat exchanger (1), the second guide rail (32) is connected with the other end of the heat exchanger (1), one end of the brush (30) is clamped in the first guide rail (31), the other end of the brush (30) is clamped in the second guide rail (32), and therefore the brush (30) can slide along the guide directions of the first guide rail (31) and the second guide rail (32).
5. the outdoor unit of any one of claims 1 to 3, wherein:
a water tank (41) which can be used for collecting condensed water is arranged at the lower part of the heat exchanger (1),
the cleaning device (3) further comprises a communication water pipe (42) communicated with the inside of the water tank (41), a water pump (43) connected with the communication water pipe (42), and a spraying water pipe (44) arranged at the upper end of the heat exchanger (1), wherein the spraying water pipe (44) is communicated with the communication water pipe (42) so as to guide collected condensed water to the spraying water pipe (44) and spray the condensed water onto the heat exchanger (1) through the spraying water pipe (44).
6. the outdoor unit of claim 5, wherein:
The heat exchanger is characterized by further comprising a chassis (5), wherein the heat exchanger (1) is arranged on the chassis (5) and is supported by the chassis (5); the water tank (41) is connected and arranged on the chassis (5); the motor support (21) is arranged on the water tank (41).
7. a control method for removing filth blockage of an outdoor unit heat exchanger is characterized by comprising the following steps: the outdoor unit of any one of claims 1 to 6, which is capable of removing the heat exchanger fouling, is used for removing the heat exchanger fouling.
8. The control method according to claim 7, characterized in that:
The method comprises a detection and judgment step, a detection and judgment step and a judgment step, wherein the detection and judgment step is used for detecting and judging whether the fins of the heat exchanger are dirty and blocked;
A control step, when the fan (2) is a reversible fan and the fins of the heat exchanger are detected and judged to be dirty and blocked, the fan is controlled to be reversed, the brush is started to move so as to clean the fins of the heat exchanger, and the fan blows air towards the heat exchanger; and when detecting and judging that the heat exchanger fins are not dirty and blocked, controlling the fan to rotate forward, enabling the brush not to move, and blowing towards the direction departing from the heat exchanger (1) by the fan.
9. the control method according to claim 8, characterized in that:
When the lower part of the heat exchanger (1) is also provided with a water tank (41) which can be used for collecting condensed water,
the cleaning device (3) further comprises a communication water pipe (42) communicated with the inside of the water tank (41), a water pump (43) connected with the communication water pipe (42), and a spraying water pipe (44) arranged at the upper end of the heat exchanger (1), wherein when the spraying water pipe (44) is communicated with the communication water pipe (42):
and after the brush moves for T1 time, starting a water pump (43) to supply water to the spray water pipe (44) so as to clean the fins of the heat exchanger, and after the water pump (43) is started for T2 time, closing the water pump (43) and stopping the cleaning action on the fins of the heat exchanger.
10. the control method according to claim 8, characterized in that:
When the brush cleans the fins of the heat exchanger, controlling the water tank to stop collecting the condensed water of the heat exchanger; and when the fins of the heat exchanger are not cleaned, controlling the water tank to be opened to collect condensed water of the heat exchanger.
CN201810948543.4A 2018-08-20 2018-08-20 Outdoor unit capable of removing filth blockage of heat exchanger and control method Active CN109237638B (en)

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