CN216481676U

CN216481676U - Air conditioner self-cleaning system

Info

Publication number: CN216481676U
Application number: CN202122701119.XU
Authority: CN
Inventors: 袁占彪; 罗攀; 曹振
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-11-06
Filing date: 2021-11-06
Publication date: 2022-05-10
Anticipated expiration: 2031-11-06

Abstract

The utility model relates to an air conditioner self-cleaning system, comprising: the refrigerant circulating system comprises a compressor, a first heat exchanger and a second heat exchanger, and the compressor, the first heat exchanger and the second heat exchanger are all communicated on a refrigerant passage to form a refrigerant circulating loop; and the variable frequency switch device is arranged on the refrigerant passage and is used for controlling the on-off frequency of the refrigerant passage. The refrigerant channel is controlled by the variable frequency switch device to be continuously switched between a conducting state and a stopping state according to a certain frequency to form pressure shock waves, and the pressure shock waves are transmitted to the first heat exchanger and/or the second heat exchanger, so that the first heat exchanger and/or the second heat exchanger vibrate, dust falls off, and the purpose of self-cleaning is achieved. The structure is simple, and the realization cost is low.

Description

Air conditioner self-cleaning system

Technical Field

The utility model relates to the technical field of air conditioner cleaning, in particular to an air conditioner self-cleaning system and an air conditioner self-cleaning method.

Background

After the air conditioning system is used for a long time, a large amount of dust can be deposited on the heat exchanger, so that the heat exchange efficiency of the heat exchanger is influenced, and the dust is doped in cold air or hot air fed into a room. In order to clean dust on the heat exchanger, a vibration device can be additionally arranged in the air conditioning system, vibration is transmitted to the heat exchanger by the vibration device, and the dust falls off in the vibration process of the heat exchanger, so that the purpose of cleaning the heat exchanger is achieved. This method requires an additional vibration device as a vibration source, resulting in a complicated structure of the air conditioning system.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air conditioner self-cleaning system aiming at the problem that the structure of an air conditioner system is complex when the self-cleaning of a heat exchanger is realized, so that the structure is simplified.

An air conditioner self-cleaning system comprising:

the refrigerant circulating system comprises a compressor, a first heat exchanger and a second heat exchanger, and the compressor, the first heat exchanger and the second heat exchanger are all communicated on a refrigerant passage to form a refrigerant circulating loop;

and the variable frequency switch device is arranged on the refrigerant passage and is used for controlling the on-off frequency of the refrigerant passage.

The technical scheme provides an air conditioner self-cleaning system, the variable frequency switch device is directly arranged on the refrigerant passage, the refrigerant passage is controlled to be continuously switched between a conducting state and a cut-off state according to a certain frequency through the variable frequency switch device, pressure shock waves are formed, and the pressure shock waves are transmitted to the first heat exchanger and/or the second heat exchanger, so that the first heat exchanger and/or the second heat exchanger vibrate, dust falls off, and the purpose of self-cleaning is achieved. The structure is simple, and the realization cost is low.

In one embodiment, the variable frequency switching device is located between the discharge port of the compressor and the first heat exchanger.

In one embodiment, the refrigerant circulation system further comprises a four-way valve, two water ports of the four-way valve are respectively communicated with an air inlet and an air outlet of the compressor, and the other two water ports of the four-way valve are respectively communicated with the first heat exchanger and the second heat exchanger, so that the refrigerant circulation system capable of refrigerating and heating is formed;

the frequency conversion switch device is positioned on a refrigerant passage communicated between the exhaust port of the compressor and the four-way valve.

In one embodiment, the frequency conversion switch device includes a pressure chamber having an inlet and an outlet to form a pressure channel, the pressure channel is communicated with the refrigerant channel, the frequency conversion switch device further includes a valve structure for controlling the pressure channel to open and close, a pressure detection device is disposed on the frequency conversion switch device, the pressure detection device is used for detecting the pressure in the pressure chamber, and the pressure detection device is electrically connected to the frequency conversion switch device.

In one embodiment, the frequency conversion switch device is provided with a pressure cavity, the pressure cavity is provided with an inlet and an outlet to form a pressure channel, the pressure channel is communicated with the refrigerant channel, the frequency conversion switch device further comprises a swinging unit and a driving unit, the swinging unit is arranged in the pressure cavity and comprises a sealing plug, and the driving unit is used for driving the swinging unit to swing in the pressure cavity so that the sealing plug can be switched between a first position and a second position;

when the plug is located at the first position, the plug stops the pressure channel plug, and when the plug is located at the second position, the pressure channel is communicated.

In one embodiment, the cross-sectional shape of the plug conforms to the shape of the outlet of the pressure chamber;

and/or the outlet of the pressure cavity faces to a first direction, a plane perpendicular to the first direction is a reference plane, the sealing plug is in a disc shape and moves on a plane parallel to the reference plane when swinging.

In one embodiment, the driving unit includes a high-frequency switching power supply and a coil, the high-frequency switching power supply is electrically connected with the coil, the plug is located in a magnetic field range generated when the coil is electrified, and the plug receives magnetic attraction force in the magnetic field for switching from the second position to the first position when the coil is electrified.

In one embodiment, the variable frequency switch device further comprises an elastic resetting piece, wherein the elastic resetting piece is arranged between the pressure cavity wall and the blocking plug and is used for providing a resetting force for resetting the blocking plug from the first position to the second position.

In one embodiment, the first heat exchanger and/or the second heat exchanger comprise a shell, a heat exchange tube and a fin arranged on the heat exchange tube, the fin is arranged in the shell, and two ends of the heat exchange tube are both communicated with the refrigerant channel;

the shell is provided with an air inlet for air to be heated to enter, and a cover plate is movably arranged at the air inlet;

the shell is further provided with a dust removal opening, the dust removal opening is provided with a dust removal pipeline, and the shell is internally provided with a dust removal fan which is used for blowing dust falling from the fins to the dust removal opening.

In one embodiment, a vibration detection device is arranged on the first heat exchanger and/or the second heat exchanger, the vibration detection device is electrically connected with the variable frequency switch device, and the vibration detection device is electrically connected with the compressor.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a system diagram of a self-cleaning system of an air conditioner according to the present embodiment;

fig. 2 is a schematic structural diagram of the variable frequency switching device in this embodiment;

fig. 3 is a schematic structural diagram of the first heat exchanger according to the present embodiment;

fig. 4 is a flowchart illustrating a self-cleaning method of an air conditioner according to the present embodiment.

Description of reference numerals:

10. an air conditioning self-cleaning system; 11. a compressor; 12. a first heat exchanger; 121. a housing; 122. opening a dust removal port; 123. a cover plate; 124. an air inlet; 13. a second heat exchanger; 14. a four-way valve; 15. a throttling device; 16. a refrigerant passage; 17. a variable frequency switching device; 171. a pressure chamber; 172. a pressure detection device; 173. a swing unit; 174. blocking; 175. a drive unit; 1751. a high frequency switching power supply; 1752. a coil; 176. an elastic reset member; 18. a vibration detecting device.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in FIG. 1, in one embodiment, there is provided an air conditioning self-cleaning system 10, comprising:

the refrigerant circulating system comprises a compressor 11, a first heat exchanger 12 and a second heat exchanger 13, wherein the compressor 11, the first heat exchanger 12 and the second heat exchanger 13 are all communicated on a refrigerant passage 16 to form a refrigerant circulating loop;

and the variable frequency switch device 17 is arranged on the refrigerant passage 16 and used for controlling the on-off frequency of the refrigerant passage 16.

According to the self-cleaning system 10 for the air conditioner, the variable frequency switch device 17 is directly arranged on the refrigerant passage 16, the refrigerant passage 16 is controlled to be continuously switched between a conducting state and a stopping state according to a certain frequency through the variable frequency switch device 17, pressure shock waves are formed, and the pressure shock waves are transmitted to the first heat exchanger 12 and/or the second heat exchanger 13, so that the first heat exchanger 12 and/or the second heat exchanger 13 vibrate, dust falls off, and the purpose of self-cleaning is achieved. The structure is simple, and the realization cost is low.

In particular, the operating frequency of the variable frequency switching device 17 and the operating frequency of the compressor 11 are adjustable. By changing the operating frequency of the variable frequency switching device 17 and the operating frequency of the compressor 11, the frequency of switching the on/off state and the cut-off state of the refrigerant passage 16 can be adjusted.

In actual use, the amplitude of the fins in the first heat exchanger 12 and/or the second heat exchanger 13 can be maximized by changing the operating frequency of the variable frequency switching device 17 and the operating frequency of the compressor 11. Then, when the amplitude of the fins is maximum, the operating frequency of the variable frequency switch device 17 and the operating frequency of the compressor 11 are kept for a period of time, so that dust on the fins is vibrated down, and the purpose of self-cleaning is achieved.

Further, as shown in fig. 1, in one embodiment, the variable frequency switching device 17 is located between the discharge port of the compressor 11 and the first heat exchanger 12. The inverter switching device 17 directly controls the flow of the refrigerant discharged from the discharge port of the compressor 11, so that the pressure shock wave can be transmitted downstream to the first heat exchanger 12 and/or the second heat exchanger 13.

Alternatively, in other embodiments, the variable frequency switch device 17 may be disposed at other positions on the refrigerant passage 16, as long as it can intermittently allow the refrigerant to enter the first heat exchanger 12 and/or the second heat exchanger 13 by controlling on/off of the refrigerant passage 16, so as to cause the first heat exchanger 12 and/or the second heat exchanger 13 to vibrate.

More specifically, as shown in fig. 1, in an embodiment, the refrigerant circulation system further includes a four-way valve 14, two water inlets of the four-way valve 14 are respectively communicated with an air inlet and an air outlet of the compressor 11, and the other two water inlets of the four-way valve 14 are respectively communicated with the first heat exchanger 12 and the second heat exchanger 13, so as to form a refrigerant circulation system capable of performing both cooling and heating;

the variable frequency switching device 17 is located on a refrigerant passage 16 communicating between the discharge port of the compressor 11 and the four-way valve 14.

As shown in fig. 1, in case of refrigeration, the first heat exchanger 12 is a condenser, and the second heat exchanger 13 is an evaporator. When the first heat exchanger 12 needs to be cleaned, the four-way valve 14 is switched to enable the refrigerant circulating system to enter a refrigeration mode, and the refrigerant controlled by the variable frequency switch device 17 firstly reaches the first heat exchanger 12 and then passes through the second heat exchanger 13. The pressure shock wave in the refrigerant passage 16 brought by the variable frequency switch device 17 mainly affects the first heat exchanger 12, so that the first heat exchanger 12 can fully vibrate and clean dust.

When the second heat exchanger 13 needs to be cleaned, the four-way valve 14 is switched to enable the refrigerant circulating system to enter a heating membrane mode, and the refrigerant controlled by the variable frequency switch device 17 firstly reaches the second heat exchanger 13 and then passes through the first heat exchanger 12. The pressure shock wave in the refrigerant passage 16 brought by the variable frequency switching device 17 mainly affects the second heat exchanger 13, so that the second heat exchanger 13 can fully vibrate to clean dust.

In other words, the heat exchanger needing to be cleaned in a key manner is acquired according to the needs of the user, and then the state of the four-way valve 14 is switched, so that the heat exchanger which passes through the frequency conversion switching device 17 first is the heat exchanger needing to be cleaned in a key manner when the refrigerant circulates.

Further, in one embodiment, as shown in fig. 1, the frequency conversion switch device 17 has a pressure chamber 171 therein, and the pressure chamber 171 has an inlet and an outlet, forming a pressure channel, and the pressure channel is communicated with the refrigerant channel. The variable frequency switching device 17 further comprises a valve body structure for controlling the switching of the pressure channel. When the refrigerant flows through the refrigerant channel, the refrigerant enters the pressure chamber 171 from the inlet and flows out of the pressure chamber 171 from the outlet. The valve body structure indirectly controls the on-off state of the refrigerant channel by controlling the on-off state of the pressure channel.

Further, as shown in fig. 1, a pressure detection device 172 is disposed on the variable frequency switch device 17, the pressure detection device 172 is used for detecting the pressure in the pressure chamber 171, and the pressure detection device 172 is electrically connected to the variable frequency switch device 17.

Based on the pressure shock wave formed by the refrigerant channel being switched on and off, the pressure in the refrigerant channel is sometimes higher and sometimes lower, and in order to ensure that the pressure in the refrigerant channel is within a safe range, the pressure detection device 172 is arranged on the variable frequency switch device 17.

In the initial stage of self-cleaning, the frequency conversion switch device 17 is first closed, the refrigerant passage 16 is cut off, and the frequency conversion switch device 17 is not opened until the pressure value in the pressure chamber 171 reaches 80% of the protection value. During the self-cleaning process, the throttle device 15 in the refrigerant circulation circuit is adjusted to the maximum opening.

Specifically, in one embodiment, as shown in fig. 2, the variable frequency switch device 17 further includes a swinging unit 173 and a driving unit 175, the swinging unit 173 is disposed in the pressure chamber 171, and the swinging unit 173 includes a stopper 174, and the driving unit 175 is configured to drive the swinging unit 173 to swing in the pressure chamber 171, so that the stopper 174 can be switched between a first position and a second position;

when the plug 174 is in the first position, the plug 174 blocks the pressure channel, and when the plug 174 is in the second position, the pressure channel is open.

It is understood that the valve body structure includes the swing unit 173 and the driving unit 175.

During the process of the swing unit 173 continuously swinging back and forth, the pressure channel is continuously switched between the on state and the off state.

Further specifically, in one embodiment, the driving unit 175 can provide the swing unit 173 with a force that causes the swing unit 173 to switch from the second position to the first position. When the force applied by the driving unit 175 to the swinging unit 173 is removed, the swinging unit 173 can be switched from the first position to the second position by the force of its own weight.

Alternatively, in another embodiment, the driving unit 175 can provide the swing unit 173 with a force that causes the swing unit 173 to switch from the first position to the second position. When the force applied by the driving unit 175 to the swinging unit 173 is removed, the swinging unit 173 can be switched from the second position to the first position by the force of its own weight.

Therefore, the driving unit 175 is continuously turned on and off, so that the refrigerant passage 16 is continuously switched between the on state and the off state.

Alternatively, in still other embodiments, the driving unit 175 can provide a force to the swing unit 173 to switch from the second position to the first position, and the swing unit 173 can provide a force to switch from the first position to the second position. The driving unit 175 directly drives the swinging unit 173 to swing back and forth between the first position and the second position.

Specifically, as shown in fig. 2, in one embodiment, the driving unit 175 includes a high frequency switching power supply 1751 and a coil 1752, the high frequency switching power supply 1751 is electrically connected to the coil 1752, the plug 174 is located within a range of a magnetic field generated when the coil 1752 is energized, and the plug 174 is subjected to a magnetic attraction force in the magnetic field when the coil 1752 is energized, and the magnetic attraction force is switched from the second position to the first position.

The high frequency switching power supply 1751 can input a constantly changing electric field into the coil 1752 according to different frequencies, so that the coil 1752 generates a magnetic field according to a certain frequency. The plug 174 switches from the second position to the first position when the coil 1752 generates a magnetic field. When the coil 1752 does not generate a magnetic field, the plug 174 returns to the first position. By adjusting the operating frequency of the high frequency switching power supply 1751, the frequency at which the coil 1752 generates a magnetic field can be controlled.

By continuously changing the operating frequency of the high-frequency switching power supply 1751 and the operating frequency of the compressor 11, the operating frequency f1max of the high-frequency switching power supply 1751 and the operating frequency f2max of the compressor 11 can be obtained when the amplitude of the fins on the first heat exchanger 12 and/or the second heat exchanger 13 is maximum. During the self-cleaning process, the high-frequency switching power supply 1751 is operated at a frequency f1max, and the compressor 11 is operated at a frequency f2 max.

Further, in one embodiment, as shown in fig. 2, the variable frequency switch device 17 further includes an elastic restoring member 176, and the elastic restoring member 176 is disposed between the cavity wall of the pressure cavity 171 and the blocking plug 174 for providing a restoring force for the blocking plug 174 to restore from the first position to the second position.

In one embodiment, as shown in fig. 2, when the coil 1752 is de-energized and no magnetic field is generated, the resilient return member 176 returns the plug 174 to the second position.

More specifically, in one embodiment, as shown in FIG. 2, the cross-sectional shape of the plug 174 conforms to the shape of the outlet of the pressure chamber 171. So that when the plug 174 is moved to the outlet of the pressure chamber 171, the outlet of the pressure chamber 171 can be plugged, thereby closing off the pressure channel.

Further, as shown in fig. 2, in one embodiment, the outlet of the pressure chamber 171 is oriented in a first direction, a plane perpendicular to the first direction is a reference plane, the plug 174 has a disk shape, and the plug 174 moves on a plane parallel to the reference plane when swinging.

The disk-shaped stopper 174 receives less resistance from the refrigerant when switching the state between the first position and the second position, and the state switching is more flexible.

Specifically, in one embodiment, as shown in fig. 2, the swing unit 173 includes a swing rod, one end of the swing rod is hinged to the wall of the pressure chamber 171, the other end of the swing rod is connected to the sealing plug 174, and the length direction of the swing rod is perpendicular to the axial direction of the sealing plug 174.

Further, when the variable frequency switch device 17 is operated for a period of time, so that dust on the first heat exchanger 12 and/or the second heat exchanger 13 falls off, the fan in the first heat exchanger 12 and/or the second heat exchanger 13 can be operated with the largest wind shield, and dust can be blown out of the heat exchanger.

When the first heat exchanger 12 and/or the second heat exchanger 13 are located in an environment where it is inconvenient to blow out dust directly, such as indoors, the dust may be blown toward a characteristic area, as shown in fig. 3.

Specifically, in one embodiment, as shown in fig. 3, the first heat exchanger 12 and/or the second heat exchanger 13 includes a casing 121, a heat exchange tube and a fin disposed on the heat exchange tube, the fin is disposed in the casing 121, and both ends of the heat exchange tube are communicated with the refrigerant passage 16;

the housing 121 is further provided with a dust removal opening 122, the dust removal opening 122 is provided with a dust removal pipeline (not shown in the figure), and the housing 121 is provided with a dust removal fan (not shown in the figure) for blowing dust falling from the fins to the dust removal opening 122.

So that the dust blown out from the dust removal opening 122 is guided to a target area by the dust removal duct.

Further, in an embodiment, the dust removing opening 122 is located on a left side wall or a right side wall of the housing 121, and a dust removing inlet is further disposed on the housing 121 opposite to the dust removing opening 122, so that when the dust removing fan is started, air circulation can be performed to take away dust.

Further, as shown in fig. 3, in an embodiment, the housing 121 is provided with an air inlet 124 for allowing air to be heated to enter, and a cover plate 123 is movably disposed at the air inlet 124.

During normal cooling or heating, the cover 123 is opened, so that air can enter the housing 121 from the air inlet 124. During the self-cleaning process, the cover plate 123 is closed to block the air inlet 124, so as to prevent dust from leaking out of the air inlet 124 to the outside of the housing 121.

Further, as shown in fig. 1, in an embodiment, a vibration detection device 18 is disposed on the first heat exchanger 12 and/or the second heat exchanger 13, the vibration detection device 18 is electrically connected to the variable frequency switching device 17, and the vibration detection device 18 is electrically connected to the compressor 11.

The vibration detection device 18 is used for detecting the vibration condition of the heat exchanger needing self-cleaning. As described above, in order to obtain the maximum time of the fin amplitude, the operating frequency of the variable frequency switch device 17 and the operating frequency of the compressor 11, in the self-cleaning initial stage, the operating frequency of the variable frequency switch device 17 and the operating frequency of the compressor 11 may be continuously adjusted, and the vibration condition of the heat exchanger to be self-cleaned is synchronously obtained through the vibration detection device 18. Thus, the operating frequency f1max of the variable frequency switching device 17 and the operating frequency f2max of the compressor 11 are recognized when the vibration amplitude of the fins is maximized in the heat exchanger that needs to be self-cleaned.

Further, in still another embodiment, there is provided an air conditioner self-cleaning method, including the steps of:

controlled by a self-cleaning instruction, and a refrigerant is intermittently introduced into a heat exchanger to be cleaned in the air conditioning system.

According to the scheme, the refrigerant is intermittently introduced into the heat exchanger to be cleaned in the air conditioning system through the controlled self-cleaning instruction, the refrigerant forms pressure shock waves in the process of introducing the refrigerant into the evaporator in an intermittent mode, and the heat exchanger vibrates under the action of the pressure shock waves, so that dust on the heat exchanger falls off, and the purpose of self-cleaning is achieved.

Further, in order to improve the self-cleaning efficiency, the frequency of intermittently introducing the refrigerant into the heat exchanger to be cleaned in the air conditioning system may be set to an optimal value. And when the optimal value is the maximum amplitude of the fins in the heat exchanger to be cleaned, the frequency of discontinuously introducing the refrigerant into the heat exchanger to be cleaned in the air conditioning system.

Specifically, in one embodiment, the interval frequency of intermittently introducing the refrigerant into the heat exchanger to be cleaned in the air conditioning system is F1;

obtaining a value Fmax of the interval frequency F1 when the amplitude of the fins in the heat exchanger is maximum;

and intermittently inputting the refrigerant into the heat exchanger in a mode that the interval frequency F1 is Fmax.

As shown in fig. 4, the specific way of obtaining Fmax may be as follows:

continuously adjusting the operating frequency of the variable frequency switching device 17 and the operating frequency of the compressor 11, and synchronously collecting the amplitude of the fins in the heat exchanger to be self-cleaned;

and when the maximum amplitude of the fins in the heat exchanger to be self-cleaned is obtained, the operating frequency f1max of the variable frequency switching device 17 and the operating frequency f2max of the compressor 11 are obtained.

The variable frequency switching device 17 is then controlled to operate at a frequency f1max and the compressor 11 at a frequency f2 max.

Further, in one embodiment, the air conditioning system is the air conditioning self-cleaning system 10 described above;

the step of intermittently introducing the refrigerant into the heat exchanger to be cleaned in the air conditioning system under the control of the self-cleaning instruction comprises the following steps:

under the control of a self-cleaning command, adjusting a throttling device 15 between the first heat exchanger 12 and the second heat exchanger 13 to a maximum opening degree;

the pressure value in the pressure chamber 171 is detected and the frequency-changing switching device 17 is activated when the pressure value in the pressure chamber 171 reaches 80% of the protective value.

The frequency conversion switch device 17 operates according to a certain frequency to realize the intermittent on-off of the refrigerant passage 16, so that the refrigerant is intermittently introduced into the heat exchanger needing self-cleaning.

Further, in an embodiment, the air conditioning system is the above air conditioning self-cleaning system 10, and during cooling, the first heat exchanger 12 is a condenser, and the second heat exchanger 13 is an evaporator;

the method comprises the following steps before the refrigerant is discontinuously introduced into a heat exchanger to be cleaned in the air conditioning system:

if the heat exchanger to be cleaned is the first heat exchanger 12, switching the air conditioning system to a refrigeration mode;

if the heat exchanger to be cleaned is the second heat exchanger 13, the air conditioning system is switched to the heating mode.

When the air conditioning system is switched to the refrigeration mode, the refrigerant passing through the variable frequency switch device 17 first reaches the first heat exchanger 12; when the air conditioning system is switched to the heating mode, the refrigerant passing through the frequency conversion switching device 17 first reaches the second heat exchanger 13.

Further, if the first heat exchanger 12 is located outdoors, after the first heat exchanger 12 is vibrated, the fan of the first heat exchanger 12 may be adjusted to a maximum windshield, and the vibrated dust may be directly blown outdoors.

Further, in an embodiment, if the second heat exchanger 13 is located indoors, the cover plate 123 on the second heat exchanger 13 may be adjusted to a state of blocking the air inlet 124 when the second heat exchanger 13 vibrates. And after the second heat exchanger 13 is vibrated, starting the dust removal fan to discharge the vibrated dust to a target area from the dust removal pipeline.

Further, how to judge that the vibration of the first heat exchanger 12 and/or the second heat exchanger 13 is completed may be performed by detecting whether the operation time length of the variable frequency switch device 17 reaches a preset time length T1 according to a target frequency, for example, the frequency f1max, and if the preset time length is reached, it is proved that the vibration time length reaches the standard, and the dust on the first heat exchanger 12 and/or the second heat exchanger 13 is substantially dropped.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An air conditioner self-cleaning system, comprising:

2. An air conditioner self-cleaning system as claimed in claim 1, wherein said variable frequency switching device is located between the discharge of said compressor and said first heat exchanger.

3. The self-cleaning system of claim 2, wherein the refrigerant circulating system further comprises a four-way valve, two water ports of the four-way valve are respectively communicated with the air inlet and the air outlet of the compressor, and the other two water ports of the four-way valve are respectively communicated with the first heat exchanger and the second heat exchanger, so as to form a refrigerant circulating system capable of refrigerating and heating;

4. The self-cleaning system of claim 1, wherein the frequency conversion switch device further comprises a pressure chamber having an inlet and an outlet to form a pressure channel, the pressure channel is connected to the refrigerant passage, the frequency conversion switch device further comprises a valve body structure for controlling the pressure channel to open and close, the frequency conversion switch device is provided with a pressure detection device for detecting the pressure in the pressure chamber, and the pressure detection device is electrically connected to the frequency conversion switch device.

5. An air conditioner self-cleaning system as claimed in claim 1, wherein the inverter switching device is provided with a pressure chamber having an inlet and an outlet to form a pressure channel, the pressure channel is communicated with the refrigerant passage, the inverter switching device further comprises a swinging unit and a driving unit, the swinging unit is arranged in the pressure chamber, the swinging unit comprises a sealing plug, and the driving unit is used for driving the swinging unit to swing in the pressure chamber, so that the sealing plug can be switched between a first position and a second position;

6. An air conditioning self-cleaning system according to claim 5, wherein the cross-sectional shape of said plug conforms to the outlet shape of said pressure chamber;

7. An air conditioner self-cleaning system according to claim 5, wherein said driving unit comprises a high frequency switching power supply and a coil, said high frequency switching power supply is electrically connected with said coil, said stopper is located within a range of a magnetic field generated when said coil is energized, and said stopper receives a magnetic attraction in said magnetic field for switching from said second position to said first position when said coil is energized.

8. An air conditioner self-cleaning system as claimed in claim 5, wherein said variable frequency switch device further comprises an elastic reset member disposed between said pressure chamber wall and said blocking plug for providing a reset force to said blocking plug from said first position to said second position.

9. An air conditioner self-cleaning system as claimed in any one of claims 1 to 8, wherein the first heat exchanger and/or the second heat exchanger comprises a shell, a heat exchange tube and a fin arranged on the heat exchange tube, the fin is arranged in the shell, and both ends of the heat exchange tube are communicated with the refrigerant channel;

10. An air conditioner self-cleaning system according to any one of claims 1 to 8, wherein a vibration detection device is arranged on the first heat exchanger and/or the second heat exchanger, the vibration detection device is electrically connected with the variable frequency switch device, and the vibration detection device is electrically connected with the compressor.