CN110906502A - Self-cleaning system of air conditioner heat exchanger and air conditioning unit - Google Patents
Self-cleaning system of air conditioner heat exchanger and air conditioning unit Download PDFInfo
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- CN110906502A CN110906502A CN201911059956.8A CN201911059956A CN110906502A CN 110906502 A CN110906502 A CN 110906502A CN 201911059956 A CN201911059956 A CN 201911059956A CN 110906502 A CN110906502 A CN 110906502A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/003—Control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to an air conditioner heat exchanger self-cleaning system and an air conditioning unit, wherein the system comprises: a cleaning mechanism for cleaning a heat exchanger, the heat exchanger comprising an evaporator, and/or a condenser; temperature detection means for detecting the discharge temperature of the compressor; and the controller is used for judging whether the heat exchanger is dirty or not according to the exhaust temperature and controlling the cleaning mechanism to clean the heat exchanger when judging that the heat exchanger is dirty or not. The technical scheme that this embodiment provided judges whether the heat exchanger is dirty stifled through the exhaust temperature who detects the compressor to control clean mechanism and wash the heat exchanger when the heat exchanger is dirty stifled, thereby realized the automatic washing of heat exchanger, guaranteed the heat transfer effect of heat exchanger, prolonged air conditioning unit's life, reduced artifical cost of maintenance.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner heat exchanger self-cleaning system and an air conditioning unit.
Background
In the air conditioner and refrigeration industry, the air conditioner heat exchanger is often dirty and blocked, so that the exhaust temperature is too high, and the service life of a compressor is influenced.
Because the outdoor unit of the air conditioner needs to be installed outdoors and is influenced by the air environment, various kinds of dust and particles are more, when the outdoor unit of the air conditioner runs, the dust and the particles are attached to the surfaces of the condenser fins, the heat exchange effect is influenced, and when the outdoor unit of the air conditioner is seriously clogged, the exhaust temperature of the unit is overhigh, and the compressor is damaged.
Meanwhile, an air conditioner indoor unit is installed indoors, dust is attached to the surface of an evaporator fin, when the evaporator is dirty and blocked, the refrigeration effect is directly influenced, the suction pressure is too low, the operation of a compressor is influenced, and the service life of the air conditioner unit is also limited.
Disclosure of Invention
In view of this, the present invention provides a self-cleaning system for an air conditioning heat exchanger and an air conditioning unit, so as to solve the problem that the air conditioning heat exchanger is easily clogged.
According to a first aspect of embodiments of the present invention, there is provided an air conditioner heat exchanger self-cleaning system, including:
a cleaning mechanism for cleaning a heat exchanger, the heat exchanger comprising an evaporator, and/or a condenser;
temperature detection means for detecting the discharge temperature of the compressor;
and the controller is used for judging whether the heat exchanger is dirty or not according to the exhaust temperature and controlling the cleaning mechanism to clean the heat exchanger when judging that the heat exchanger is dirty or not.
Preferably, the system further comprises:
the dust detection device is used for detecting dust information on the heat exchanger;
the controller is specifically configured to determine whether the heat exchanger is dirty or not according to the exhaust temperature or the dust information, and control the cleaning mechanism to clean the heat exchanger when it is determined that the heat exchanger is dirty or not.
Preferably, the cleaning mechanism comprises:
the first cleaning mechanism is used for cleaning the indoor heat exchanger;
the second cleaning mechanism is used for cleaning the outdoor heat exchanger;
the first cleaning mechanism is communicated with the second cleaning mechanism.
Preferably, the first cleaning mechanism includes:
the indoor drainage flushing device is arranged above the indoor heat exchanger;
and the indoor water receiving tray is arranged at the bottom of the indoor heat exchanger.
Preferably, the second cleaning mechanism includes:
the outdoor drainage flushing device is arranged above the outdoor heat exchanger and is communicated with the indoor water receiving tray through a flow guide pipeline;
and the outdoor water receiving tray is arranged at the bottom of the outdoor heat exchanger and is communicated with the indoor water receiving tray through a flow guide pipeline.
Preferably, the bottom of the indoor water pan and/or the outdoor water pan is provided with a sewage discharge pipeline.
According to a second aspect of the embodiments of the present invention, there is provided an air conditioning unit, including:
a compressor, a heat exchanger, a four-way valve, a first throttling component, a second throttling component, and,
the self-cleaning system of the air conditioner heat exchanger.
Preferably, the heat exchanger comprises an indoor heat exchanger and an outdoor heat exchanger;
the indoor heat exchanger and the outdoor heat exchanger comprise an upper layer of independent heat exchanger and a lower layer of independent heat exchanger.
Preferably, inlets of the upper and lower layers of heat exchangers of the indoor unit heat exchanger are communicated through a first electromagnetic valve and then connected with an outlet of the outdoor unit heat exchanger through a first throttling component;
and outlets of the upper layer heat exchanger and the lower layer heat exchanger of the indoor unit heat exchanger are communicated through a second electromagnetic valve and then are connected with an inlet of the compressor through a third electromagnetic valve.
Preferably, inlets of the upper and lower heat exchangers of the outdoor heat exchanger are connected with an outlet of the compressor after being communicated through a fourth electromagnetic valve;
and outlets of the upper layer heat exchanger and the lower layer heat exchanger of the outdoor unit heat exchanger are communicated through a fifth electromagnetic valve and then are connected with an inlet of the indoor unit heat exchanger through a first throttling component.
Preferably, an inlet of the upper heat exchanger of the indoor unit heat exchanger is connected with an outlet of the upper heat exchanger of the outdoor unit heat exchanger through a second throttling component and a sixth electromagnetic valve which are connected in series.
Preferably, a first inlet of the four-way valve is connected with an outlet of the compressor through a seventh electromagnetic valve;
a second inlet of the four-way valve is connected with an outlet of the indoor heat exchanger through an eighth electromagnetic valve;
a first outlet of the four-way valve is connected with an inlet of the compressor through a ninth electromagnetic valve;
and a second outlet of the four-way valve is connected with an inlet of the outdoor heat exchanger through a tenth electromagnetic valve.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
whether the heat exchanger is dirty and blocked is judged by detecting the exhaust temperature of the compressor, and the cleaning mechanism is controlled to clean the heat exchanger when the heat exchanger is dirty and blocked, so that the automatic cleaning of the heat exchanger is realized, the heat exchange effect of the heat exchanger is ensured, the service life of the air conditioning unit is prolonged, and the manual maintenance cost is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic block diagram of an air conditioning heat exchanger self-cleaning system shown in accordance with an exemplary embodiment;
fig. 2 is a schematic diagram illustrating a configuration of an air conditioning unit according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Fig. 1 is a schematic block diagram illustrating a self-cleaning system of an air conditioner heat exchanger according to an exemplary embodiment, the system, as shown in fig. 1, including:
a cleaning mechanism 101 for cleaning a heat exchanger, the heat exchanger comprising an evaporator, and/or a condenser;
a temperature detection device 102 for detecting the discharge temperature of the compressor;
and the controller 103 is configured to determine whether the heat exchanger is dirty or not according to the exhaust temperature, and control the cleaning mechanism 101 to clean the heat exchanger when it is determined that the heat exchanger is dirty or not.
Preferably, the temperature detection device is a temperature sensing bulb and is arranged at the position of an exhaust port of the compressor.
The controller includes but is not limited to: singlechip, microprocessor, PLC controller, DSP controller, FPGA controller etc..
It should be noted that the controller determines whether the heat exchanger is dirty or not according to the exhaust temperature, specifically, if the exhaust temperature is higher than a threshold value, it determines that the heat exchanger is dirty or not. The threshold is set based on historical empirical values or experimental data.
It can be understood that the technical scheme that this embodiment provided judges whether the heat exchanger is dirty stifled through the exhaust temperature who detects the compressor to control clean mechanism and wash the heat exchanger when the heat exchanger is dirty stifled, thereby realized the automatic washing of heat exchanger, guaranteed the heat transfer effect of heat exchanger, prolonged air conditioning unit's life, reduced artifical cost of maintenance.
Referring to fig. 2, preferably, the system further comprises:
the dust detection device is used for detecting dust information on the heat exchanger;
the controller is specifically configured to determine whether the heat exchanger is dirty or not according to the exhaust temperature or the dust information, and control the cleaning mechanism to clean the heat exchanger when it is determined that the heat exchanger is dirty or not.
Referring to fig. 2, preferably, the dust detection device includes a first dust detection device 15 and a second dust detection device 14, which are respectively disposed on the top of the indoor heat exchanger and the top of the outdoor heat exchanger, so that when dust remains in the indoor heat exchanger and the outdoor heat exchanger, the controller can start the cleaning mechanism to clean, and thus the cleaning effect is ensured.
Preferably, the cleaning mechanism comprises:
the first cleaning mechanism is used for cleaning the indoor heat exchanger;
the second cleaning mechanism is used for cleaning the outdoor heat exchanger;
the first cleaning mechanism is communicated with the second cleaning mechanism.
Preferably, the first cleaning mechanism includes:
the indoor drainage flushing device 10 is arranged above the indoor heat exchanger;
and the indoor water receiving tray is arranged at the bottom of the indoor heat exchanger.
Preferably, the second cleaning mechanism includes:
the outdoor drainage flushing device 11 is arranged above the outdoor heat exchanger and is communicated with the indoor water receiving tray through a flow guide pipeline;
and the outdoor water receiving tray is arranged at the bottom of the outdoor heat exchanger and is communicated with the indoor water receiving tray through a flow guide pipeline.
Preferably, the indoor drain flushing device 10 and the outdoor drain flushing device 11 have the same structure and are both shower nozzles.
Preferably, the bottom of the indoor water pan and/or the outdoor water pan is provided with a sewage discharge pipeline.
Referring to fig. 2, preferably, a first drain pipe 12 is provided at the bottom of the indoor water pan, and a second drain pipe 13 is provided at the bottom of the outdoor water pan.
For convenience of understanding, the outdoor heat exchanger is taken as a condenser, and the indoor heat exchanger is taken as an evaporator as an example, and the working principle of the self-cleaning system of the air conditioner heat exchanger provided by the embodiment is explained as follows:
after the air conditioning unit is used for a period of time, dust is accumulated on the surface of a condenser fin of the outdoor unit and is blocked, so that the refrigerating effect is deteriorated, the exhaust temperature of the compressor is overhigh, and the service life of the compressor is influenced; at this moment, the controller on the main board sends a control instruction, the outdoor drainage flushing device 11 is started, condensed water generated by the evaporator of the indoor unit flushes and removes dust on the surface of the condenser fin of the outdoor unit through the outdoor drainage flushing device 11, due to the action of gravity, the dust falls into the outdoor water receiving tray along with the downward flowing of the condensed water, and after being filtered by the outdoor water receiving tray, the dirt of the dust is drained away through the second sewage discharge pipeline 13, so that the purpose of automatically cleaning the condenser fin and removing dust on the surface is achieved.
The clean water after being filtered by the outdoor water receiving tray can be used for scouring and dedusting the surface of an evaporator fin of the indoor unit through the indoor drainage scouring device 10, due to the action of gravity, dust falls into the indoor water receiving tray along with the downward flow of condensed water, the dust is discharged through the first sewage discharge pipeline 12 after being filtered by the indoor water receiving tray, the filtered clean water can be used for scouring and dedusting the surface of a condenser fin of the outdoor unit through the outdoor drainage scouring device 11, the indoor drainage scouring device 10 and the outdoor drainage scouring device 11 work circularly, the purpose of bidirectional dedusting and self-cleaning is achieved, resources are reasonably and effectively utilized, and the energy-saving and environment-friendly effects are achieved.
Fig. 2 is a schematic structural view illustrating an air conditioning unit according to an exemplary embodiment, the air conditioning unit, as shown in fig. 2, including:
a compressor, a heat exchanger, a four-way valve, a first throttling part 18, a second throttling part 17, and,
the self-cleaning system of the air conditioner heat exchanger.
It can be understood that the technical scheme that this embodiment provided judges whether the heat exchanger is dirty stifled through the exhaust temperature who detects the compressor to control clean mechanism and wash the heat exchanger when the heat exchanger is dirty stifled, thereby realized the automatic washing of heat exchanger, guaranteed the heat transfer effect of heat exchanger, prolonged air conditioning unit's life, reduced artifical cost of maintenance.
Preferably, the heat exchanger comprises an indoor heat exchanger and an outdoor heat exchanger;
the indoor heat exchanger and the outdoor heat exchanger comprise an upper layer of independent heat exchanger and a lower layer of independent heat exchanger.
Preferably, inlets of upper and lower layers of heat exchangers of the indoor unit heat exchanger are communicated through a first electromagnetic valve 9 and then connected with an outlet of the outdoor unit heat exchanger through a first throttling component 18;
and outlets of upper and lower layers of heat exchangers of the indoor unit heat exchanger are communicated through a second electromagnetic valve 5 and then are connected with an inlet of the compressor through a third electromagnetic valve 6.
Preferably, inlets of the upper and lower heat exchangers of the outdoor heat exchanger are connected with an outlet of the compressor after being communicated through a fourth electromagnetic valve 3;
and outlets of the upper layer heat exchanger and the lower layer heat exchanger of the outdoor heat exchanger are communicated through a fifth electromagnetic valve 7 and then are connected with an inlet of the indoor heat exchanger through a first throttling component 18.
Preferably, the inlet of the upper heat exchanger of the indoor heat exchanger is connected with the outlet of the upper heat exchanger of the outdoor heat exchanger through the second throttling element 17 and the sixth electromagnetic valve 8 which are connected in series.
Preferably, a first inlet a of the four-way valve is connected with an outlet of the compressor through a seventh solenoid valve 1;
a second inlet C of the four-way valve is connected with an outlet of the indoor heat exchanger through an eighth electromagnetic valve 4;
a first outlet B of the four-way valve is connected with an inlet of the compressor through a ninth electromagnetic valve 16;
and a second outlet D of the four-way valve is connected with an inlet of the outdoor heat exchanger through a tenth electromagnetic valve 2.
For convenience of understanding, the outdoor heat exchanger is taken as a condenser, and the indoor heat exchanger is taken as an evaporator as an example, and the operation principle of the air conditioning unit provided by the embodiment is explained as follows:
under the normal condition, under the refrigeration working condition of the air conditioning unit, a high-temperature and high-pressure gas-liquid mixture discharged from an exhaust port of a compressor enters a condenser, the upper layer and the lower layer of the condenser are independent, the upper part of the condenser can refrigerate and thermally fluorinate frost, a controller controls a fourth electromagnetic valve 3 to be opened, a seventh electromagnetic valve 1 and a tenth electromagnetic valve 2 to be closed, the whole condenser is not shunted at the moment, the condenser is used as an integrated condenser, the high-temperature and high-pressure gas-liquid mixture is changed into low-temperature and high-pressure liquid to be discharged and enter a first throttling part 18 after being condensed by the condenser, the controller controls a fifth electromagnetic valve 7 to be opened at the moment, a sixth electromagnetic valve 8 to be closed, the low-temperature and high-pressure liquid is changed into low-temperature and low-pressure gas-liquid mixture to enter an evaporator after passing through the, and the low-temperature low-pressure gas is changed, at the moment, the controller controls the second electromagnetic valve 5 and the third electromagnetic valve 6 to be opened, the eighth electromagnetic valve 4 and the ninth electromagnetic valve 16 to be closed, and the low-temperature low-pressure gas enters the compressor through the air suction port of the compressor, so that a refrigeration cycle system is completed.
After the air conditioning unit is used for a period of time, dust is accumulated on the surface of a condenser fin of the outdoor unit and is blocked, so that the refrigerating effect is deteriorated, the exhaust temperature of the compressor is overhigh, and the service life of the compressor is influenced; at this moment, the controller on the main board sends a control instruction, the outdoor drainage flushing device 11 is started, condensed water generated by the evaporator of the indoor unit flushes and removes dust on the surface of the condenser fin of the outdoor unit through the outdoor drainage flushing device 11, due to the action of gravity, the dust falls into the outdoor water receiving tray along with the downward flowing of the condensed water, and after being filtered by the outdoor water receiving tray, the dirt of the dust is drained away through the second sewage discharge pipeline 13, so that the purpose of automatically cleaning the condenser fin and removing dust on the surface is achieved.
The clean water after being filtered by the outdoor water receiving tray can be used for scouring and dedusting the surface of an evaporator fin of the indoor unit through the indoor drainage scouring device 10, due to the action of gravity, dust falls into the indoor water receiving tray along with the downward flow of condensed water, the dust is discharged through the first sewage discharge pipeline 12 after being filtered by the indoor water receiving tray, the filtered clean water can be used for scouring and dedusting the surface of a condenser fin of the outdoor unit through the outdoor drainage scouring device 11, the indoor drainage scouring device 10 and the outdoor drainage scouring device 11 work circularly, the purpose of bidirectional dedusting and self-cleaning is achieved, resources are reasonably and effectively utilized, and the energy-saving and environment-friendly effects are achieved.
When the first dust detection device 15 arranged above the evaporator and the second dust detection device 14 arranged above the condenser detect that dust is left, or when the temperature sensing bulb detects that the exhaust temperature of the compressor is higher than a threshold value, the controller sends a control instruction, a two-stage thermal fluorination frost dedusting mode is started, because the evaporator of the indoor unit and the condenser of the outdoor unit are divided into an upper layer and a lower layer which are independent, the two layers work independently, the lower system refrigerates, the upper system carries out thermal fluorination frost, and the condensed water generated by instant defrosting after frosting generated on the condenser is used for scouring and dedusting the surfaces of fins of the evaporator and the condenser through the indoor drainage scouring device 10 and the outdoor drainage scouring device 11 for the second time, so that the dust is thoroughly and cleanly removed.
It should be noted that when the two-stage thermal defrosting and dedusting mode is started, at this time, the fourth electromagnetic valve 3, the second electromagnetic valve 5, the fifth electromagnetic valve 7 and the first electromagnetic valve 9 are closed, the seventh electromagnetic valve 1, the tenth electromagnetic valve 2, the eighth electromagnetic valve 4, the third electromagnetic valve 6, the sixth electromagnetic valve 8 and the ninth electromagnetic valve 16 are opened, the high-temperature and high-pressure gas-liquid mixture enters the four-way valve from the exhaust port of the compressor through the seventh electromagnetic valve 1, enters from the port a of the four-way valve, exits from the port C of the four-way valve, and enters the evaporator of the indoor unit through the eighth electromagnetic valve 4, at this time, the evaporator of the indoor unit becomes a condenser for use, which is equivalent to the function of the condenser, the high-temperature and high-pressure gas-liquid mixture becomes a low-temperature and high-pressure gas-liquid mixture after being condensed, and becomes a low-, at the moment, the condenser is changed into an evaporator for use, which is equivalent to the action of the evaporator, the surface of the fin forms a frosting phenomenon rapidly, after the low-temperature and low-pressure gas-liquid mixture is evaporated, the low-temperature and low-pressure gas enters from a D port of the four-way valve through a tenth electromagnetic valve 2, the gas comes out from a B port of the four-way valve and returns to an air suction port of the compressor through a ninth electromagnetic valve 16, at the moment, the circulation process of the four-way valve reversing thermal fluorination frost is completed, at the moment, the upper half part of the condenser is used for refrigerating, the lower half part of the condenser is used for heating, and similarly, the upper half part of the evaporator is used.
When the surface of the condenser fin is frosted seriously, the refrigeration effect is influenced, at the moment, the four-way valve is required to be reversed to carry out hot fluorination defrosting, high-temperature liquid generated by the compressor enters the condenser after being reversed by the four-way valve, and the frosting attached to the surface of the condenser fin is melted instantly to generate condensed water; at the moment, the controller starts the four-way valve to change the direction, at the moment, the fourth electromagnetic valve 3, the second electromagnetic valve 5, the fifth electromagnetic valve 7 and the first electromagnetic valve 9 are closed, the seventh electromagnetic valve 1, the tenth electromagnetic valve 2, the eighth electromagnetic valve 4, the third electromagnetic valve 6, the sixth electromagnetic valve 8 and the ninth electromagnetic valve 16 are opened, the high-temperature and high-pressure gas-liquid mixture flows out from the exhaust port of the compressor, enters the port A of the four-way valve through the seventh electromagnetic valve 1, flows out from the port D of the four-way valve, enters the condenser through the tenth electromagnetic valve 2, is condensed on the condenser to become a low-temperature and high-pressure gas-liquid mixture, flows out from the condenser, enters the second throttling part 17 through the sixth electromagnetic valve 8, is throttled to become a low-temperature and low-pressure gas-liquid mixture, enters the evaporator, is evaporated to become low-temperature and low-pressure, returns to the air suction port of the compressor through the ninth electromagnetic valve 16, and completes the process of refrigerating and hot fluorination frost. At the moment, frost formed on the surfaces of fins of the condenser is instantly formed into condensed water, due to the action of gravity and the opening of an outdoor drainage flushing device 11, the condensed water carries residual dust to flow downwards together and fall into an outdoor water receiving tray, the dust and dirt are discharged through a second sewage discharge pipeline 13 after being filtered by the outdoor water receiving tray, the purpose of automatically cleaning the surfaces of the fins of the condenser is achieved, filtered clean water can also flush and remove dust on the surfaces of the fins of an evaporator of an indoor unit through an indoor drainage flushing device 10, the dust and dirt can flow downwards along with the action of gravity and fall into the indoor water receiving tray, the dust and dirt can be discharged through a first sewage discharge pipeline 12 after being filtered by the indoor water receiving tray, and the filtered clean water can again flush and remove the surfaces of the fins of the condenser of the outdoor unit through the outdoor drainage flushing device 11 and work in a cycle of the indoor drainage flushing device 10 and the outdoor drainage flushing device 11 in the, the purpose of bidirectional dust removal and self cleaning is achieved.
In summary, according to the technical scheme provided by this embodiment, when the condenser is dirty and blocked, the condensed water generated by the evaporator can be recycled to flush and remove dust on the surface of the heat exchanger fin, so as to achieve the purpose of self-cleaning; when the evaporator is dirty and blocked, the four-way valve reversing technology automatic switching system is adopted, the indoor unit evaporator is changed into a condenser, the outdoor unit condenser is changed into an evaporator, and the generated condensed water can be recycled to wash and remove dust on the surface of the fins of the indoor unit heat exchanger, so that the purpose of self-cleaning is achieved; the indoor unit and the outdoor unit can have self-cleaning capability at the same time, whether a secondary dust removal mode is started or not can be judged according to the exhaust temperature of the compressor and the dust detection device, the cleaning is clean and thorough, the environment is protected, the energy is saved, the user experience degree is good, and the satisfaction degree is high.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. An air conditioner heat exchanger self-cleaning system, comprising:
a cleaning mechanism for cleaning a heat exchanger, the heat exchanger comprising an evaporator, and/or a condenser;
temperature detection means for detecting the discharge temperature of the compressor;
and the controller is used for judging whether the heat exchanger is dirty or not according to the exhaust temperature and controlling the cleaning mechanism to clean the heat exchanger when judging that the heat exchanger is dirty or not.
2. The system of claim 1, further comprising:
the dust detection device is used for detecting dust information on the heat exchanger;
the controller is specifically configured to determine whether the heat exchanger is dirty or not according to the exhaust temperature or the dust information, and control the cleaning mechanism to clean the heat exchanger when it is determined that the heat exchanger is dirty or not.
3. The system of claim 1, wherein the cleaning mechanism comprises:
the first cleaning mechanism is used for cleaning the indoor heat exchanger;
the second cleaning mechanism is used for cleaning the outdoor heat exchanger;
the first cleaning mechanism is communicated with the second cleaning mechanism.
4. The system of claim 3, wherein the first cleaning mechanism comprises:
the indoor drainage flushing device is arranged above the indoor heat exchanger;
and the indoor water receiving tray is arranged at the bottom of the indoor heat exchanger.
5. The system of claim 4, wherein the second cleaning mechanism comprises:
the outdoor drainage flushing device is arranged above the outdoor heat exchanger and is communicated with the indoor water receiving tray through a flow guide pipeline;
and the outdoor water receiving tray is arranged at the bottom of the outdoor heat exchanger and is communicated with the indoor water receiving tray through a flow guide pipeline.
6. The system of claim 5,
and a sewage discharge pipeline is arranged at the bottom of the indoor water receiving tray and/or the outdoor water receiving tray.
7. An air conditioning assembly, comprising:
a compressor, a heat exchanger, a four-way valve, a first throttling component, a second throttling component, and,
the self-cleaning system of the air conditioner heat exchanger as set forth in any one of claims 1 to 6.
8. Air conditioning assembly according to claim 7,
the heat exchanger comprises an indoor heat exchanger and an outdoor heat exchanger;
the indoor heat exchanger and the outdoor heat exchanger comprise an upper layer of independent heat exchanger and a lower layer of independent heat exchanger.
9. Air conditioning assembly according to claim 8,
inlets of upper and lower layers of heat exchangers of the indoor unit heat exchanger are communicated through a first electromagnetic valve and then are connected with an outlet of the outdoor unit heat exchanger through a first throttling component;
and outlets of the upper layer heat exchanger and the lower layer heat exchanger of the indoor unit heat exchanger are communicated through a second electromagnetic valve and then are connected with an inlet of the compressor through a third electromagnetic valve.
10. Air conditioning assembly according to claim 9,
inlets of an upper layer heat exchanger and a lower layer heat exchanger of the outdoor unit heat exchanger are communicated through a fourth electromagnetic valve and then are connected with an outlet of the compressor;
and outlets of the upper layer heat exchanger and the lower layer heat exchanger of the outdoor unit heat exchanger are communicated through a fifth electromagnetic valve and then are connected with an inlet of the indoor unit heat exchanger through a first throttling component.
11. Air conditioning assembly according to claim 10,
and an inlet of an upper heat exchanger of the indoor unit heat exchanger is connected with an outlet of an upper heat exchanger of the outdoor unit heat exchanger through a second throttling component and a sixth electromagnetic valve which are connected in series.
12. Air conditioning assembly according to claim 11,
a first inlet of the four-way valve is connected with an outlet of the compressor through a seventh electromagnetic valve;
a second inlet of the four-way valve is connected with an outlet of the indoor heat exchanger through an eighth electromagnetic valve;
a first outlet of the four-way valve is connected with an inlet of the compressor through a ninth electromagnetic valve;
and a second outlet of the four-way valve is connected with an inlet of the outdoor heat exchanger through a tenth electromagnetic valve.
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