Fresh air conditioner outdoor unit capable of automatically removing dust and control method thereof

Abstract

The invention discloses an automatic deashing fresh air conditioner outdoor unit which comprises a shell and a fresh air module, the shell is fixedly connected to one side of an external air conditioner outdoor unit, a mounting cavity is formed in the shell, and the fresh air module is fixedly connected in the shell and located in the mounting cavity; the fresh air module is provided with a filter screen and an ash removal unit, and the filter screen is fixedly arranged at the air inlet end of the fresh air module; the dust removal unit is fixedly arranged on the fresh air module, the dust removal unit is used for sweeping dust on the filter screen, the invention further discloses a control method of the fresh air conditioner outdoor unit capable of automatically removing dust, the dust removal unit is controlled to sweep dust on the filter screen through the control method, and the filter screen is convenient to clean.

Description

Technical Field

[0001] This invention relates to the field of fresh air conditioning technology, and in particular to an automatic dust removal outdoor unit for fresh air conditioning and its control method. Background Technology

[0002] Fresh air conditioners are air conditioners that can optimize indoor air quality. They typically have a fresh air unit installed on one side of the outdoor unit to achieve the fresh air function. This means that the fresh air unit is exposed to the external environment, so there is a risk that the fresh air ducts will accumulate willow catkins and leaves, and there is even a risk that insects and small animals may enter the fresh air ducts. In the current technology, a filter is installed at the air inlet, but this method is not convenient for cleaning and maintenance. Therefore, there is an urgent need for a fresh air conditioner with a filter that is easy to clean and maintain. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an automatic dust removal outdoor unit for fresh air conditioning and its control method. The dust removal unit can remove dust from the filter, thereby facilitating the cleaning and maintenance of the filter and preventing the accumulation of dust and foreign objects on the filter, avoiding blockage and promoting the normal use of the fresh air function.

[0004] Correspondingly, an automatic dust removal fresh air air conditioner outdoor unit includes a housing and a fresh air module. The housing is fixedly connected to one side of the outdoor air conditioner unit. An installation chamber is provided inside the housing. The fresh air module is fixedly connected inside the housing and located inside the installation chamber.

[0005] The fresh air module is equipped with a filter and a dust removal unit, with the filter fixed at the air inlet of the fresh air module;

[0006] The dust removal unit is fixed on the fresh air module and is used to remove dust from the filter screen.

[0007] Preferably, the fresh air module includes a volute and a fresh air unit. The volute is fixedly connected inside the outer casing and located in the installation chamber. The volute has an air outlet and a perforated part. The volute is connected to an external duct through the air outlet. The perforated part is located on one side of the volute and serves as the air inlet of the fresh air module. A filter is fixedly connected to the volute and covers the perforated part. A dust removal unit is fixedly connected to the side of the volute with the perforated part. The fresh air unit is fixedly connected inside the volute.

[0008] Preferably, the fresh air unit includes a fan and a fan blade. The fan is fixedly connected inside the volute and located at the center of the volute. The output end of the fan is provided with a connecting shaft. The fan blade is fixedly connected to the outer peripheral wall of the connecting shaft and the fan blade is arranged circumferentially around the axis of the connecting shaft.

[0009] Preferably, the outer casing is fixed to one side of the outdoor unit of the air conditioner by screws, and the volute is fixed inside the outer casing by screws.

[0010] Preferably, a rubber pad is provided between the volute and the outer shell.

[0011] Preferably, the dust removal unit includes a stepper motor and a dust sweeping rod. The stepper motor is fixedly connected to the side of the air conditioner outdoor unit facing away from the volute. One side of the filter screen has a through hole for the output end of the stepper motor to pass through. The output end of the stepper motor is fixedly connected to the dust sweeping rod. The dust sweeping rod is located on the side of the filter screen facing away from the volute. The side of the dust sweeping rod near the filter screen has bristles that abut against the filter screen.

[0012] Preferably, a drainage groove is provided at the bottom inside the outer casing.

[0013] Preferably, the outer casing has an air intake grille and a handle on the top of the outer casing.

[0014] Correspondingly, a control method for an automatic dust removal fresh air conditioner outdoor unit is provided for controlling the aforementioned automatic dust removal fresh air conditioner outdoor unit, including a first preset time T1, a second preset time T2, a first dust removal action, and a second dust removal action. The first dust removal action is that the dust removal unit rotates 360 degrees forward and then rotates 360 degrees in the opposite direction to reset. The second dust removal action is that the dust removal unit rotates 1080 degrees forward and then rotates 1080 degrees in the opposite direction to reset.

[0015] When the fresh air conditioner is turned on, and the interval between the last time the fresh air conditioner is turned on or the last time the dust cleaning action is performed is greater than or equal to the first preset time T1, then the first dust cleaning action is performed; when the fresh air conditioner is turned off, and the continuous running time of the fresh air conditioner or the interval between the last time the dust cleaning action is performed is greater than or equal to the second preset time T2, then the second dust cleaning action is performed.

[0016] Preferably, the first preset time T1 is 8 hours, the second preset time T2 is 24 hours, the first preset angle is 360 degrees, and the second preset angle is 1080 degrees.

[0017] The beneficial effects of this invention are:

[0018] This invention can remove dust from the filter screen through a dust removal unit, thereby facilitating the cleaning and maintenance of the filter screen and preventing the accumulation of dust and foreign objects on the filter screen, thus avoiding blockage and promoting the normal use of the fresh air function. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is an installation diagram of the outdoor unit of the fresh air conditioner with automatic dust removal in this invention;

[0021] Figure 2 This is a front view of the outdoor unit of the fresh air conditioner with automatic dust removal in this invention;

[0022] Figure 3 This is a front view of the internal structure of the outdoor unit of the automatic dust removal fresh air conditioner in this invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the volute of the outdoor unit of the automatic dust removal fresh air conditioner in this invention;

[0024] Figure 5 This is a rear view of the internal structure of the outdoor unit of the automatic dust removal fresh air conditioner in this invention;

[0025] Figure 6 This is an exploded view of the fresh air module of the outdoor unit of the automatic dust removal fresh air conditioner in this invention;

[0026] Figure 7 This is a schematic diagram of the filter structure of the outdoor unit of the fresh air conditioner with automatic dust removal in this invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of the outer casing of the outdoor unit of the automatic dust removal fresh air conditioner in this invention;

[0028] Figure 9 This is a flowchart of the control method for the outdoor unit of the fresh air conditioner with automatic dust removal in this invention.

[0029] In the attached diagram,

[0030] 1. Outer shell; 11. Installation chamber; 12. Drainage groove; 13. Air inlet grille; 14. Handle; 2. Fresh air module; 21. Volute; 211. Air outlet; 212. Hollowed-out section; 213. Filter screen; 2131. Through hole; 22. Fresh air unit; 221. Fan; 222. Connecting shaft; 223. Fan blade; 23. Dust removal unit; 231. Stepper motor; 232. Dust removal rod; 3. Rubber pad. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Figure 1 This is an installation diagram of the outdoor unit of the fresh air conditioner with automatic dust removal in this invention; Figure 2This is a front view of the outdoor unit of the fresh air conditioner with automatic dust removal in this invention; Figure 3 This is a front view of the internal structure of the outdoor unit of the automatic dust removal fresh air conditioner in this invention; Figure 4 This is a schematic diagram of the internal structure of the volute of the outdoor unit of the automatic dust removal fresh air conditioner in this invention; Figure 5 This is a rear view of the internal structure of the outdoor unit of the automatic dust removal fresh air conditioner in this invention; Figure 6 This is an exploded view of the fresh air module of the outdoor unit of the automatic dust removal fresh air conditioner in this invention; Figure 7 This is a schematic diagram of the filter structure of the outdoor unit of the fresh air conditioner with automatic dust removal in this invention; Figure 8 This is a schematic diagram of the internal structure of the outdoor unit of the automatic dust removal fresh air conditioner in this invention. Please refer to... Figure 1-8 An automatic dust removal fresh air conditioner outdoor unit includes a housing 1 and a fresh air module 2. The housing 1 is fixedly connected to one side of the outdoor air conditioner unit. The housing 1 has an installation chamber 11 inside. The fresh air module 2 is fixedly connected inside the housing 1 and located inside the installation chamber 11. The fresh air module 2 is provided with a filter 213 and a dust removal unit 23. The filter 213 is fixedly installed at the air inlet end of the fresh air module 2. The dust removal unit 23 is fixedly installed on the fresh air module 2 and is used to remove dust from the filter 213.

[0033] It should be noted that this embodiment is for a fresh air conditioner with a fresh air function, wherein the fresh air conditioner has the function of turning on fresh air.

[0034] In practical use, filter 213 can help the fresh air conditioner filter out debris such as willow catkins and leaves, and also prevent the risk of insects and small animals entering. In this embodiment, filter 213 is a layer of metal wire mesh, and the mesh count can be adapted to the actual working needs. However, in long-term continuous use, it is not convenient to clean and maintain filter 213. Since the fresh air module 2 is connected inside the outer casing 1, and the outer casing 1 is connected to the outdoor unit of the air conditioner, it is particularly inconvenient to clean and maintain the outdoor unit, especially for high-positioned outdoor units. Therefore, filter 213 can be cleaned through the dust removal unit 23. The specific cleaning steps and control methods are as follows:

[0035] It should be noted that the fresh air conditioner is controlled by a control module, which uses a PLC controller familiar to those skilled in the art, and will not be described in detail here.

[0036] Preferably, the fresh air module 2 includes a volute 21 and a fresh air unit 22. The volute 21 is fixedly connected inside the outer casing 1 and located in the installation chamber 11. The volute 21 is provided with an air outlet 211 and a hollow part 212. The volute 21 is connected to an external pipe through the air outlet 211. The hollow part 212 is located on one side of the volute 21 and is the air inlet of the fresh air module 2. The filter screen 213 is fixedly connected to the volute 21 and covers the hollow part 212. The dust removal unit 23 is fixedly connected to the side of the volute 21 with the hollow part 212. The fresh air unit 22 is fixedly connected inside the volute 21.

[0037] Through the above design, external air enters the volute 21 through the hollow part 212 through the negative pressure generated by the fresh air unit 22 and is finally delivered to the room. The indoor air is finally delivered to the external duct through the air outlet 211 and discharged to the outside. The filter screen 213 covers the hollow part 212, which can further prevent debris or insects from entering the volute 21 when the fresh air is turned on and causing blockage. In addition, the dust cleaning unit 23 can also clean the filter screen 213, extend the maintenance cycle of the filter screen 213, and extend the service life of the filter screen 213. It should be noted that, as a preferred embodiment of this embodiment, the hollow part 212 is located on the side of the volute 21 away from the external air conditioner outdoor unit, which is conducive to the air flow.

[0038] Preferably, the fresh air unit 22 includes a fan 221 and a fan blade 223. The fan 221 is fixedly connected inside the volute 21 and located at the center of the volute 21. The output end of the fan 221 is provided with a connecting shaft 222. The fan blade 223 is fixedly connected to the outer peripheral wall of the connecting shaft 222 and the fan blade 223 is arranged circumferentially around the axis of the connecting shaft 222.

[0039] In this embodiment, after the fan 221 is started, it will drive the connecting shaft 222 to rotate, and the connecting shaft 222 will drive the fan blade 223 to rotate, thereby generating negative pressure to achieve ventilation and realize the fresh air function.

[0040] Preferably, the outer casing 1 is fixed to one side of the outdoor unit of the air conditioner by screws, and the volute 21 is fixed inside the outer casing 1 by screws.

[0041] In this embodiment, the volute 21 is fixed inside the outer casing 1 by screws. Specifically, the outer casing 1 has a flange edge with a buckle and mounting holes. The outer casing 1 can be snapped onto one side of the outdoor unit of the air conditioner by the buckle to achieve initial positioning and fixation, and then further tightened to one side of the outdoor unit of the air conditioner by screws. On the other hand, the outer casing 1 has a mounting part for installing the volute 21. The volute 21 has ears that match the mounting part. The volute 21 is locked inside the outer casing 1 by screws passing through the ears and the mounting part in sequence, thereby improving the stability of the volute 21.

[0042] Preferably, a rubber pad 3 is provided between the volute 21 and the outer shell 1.

[0043] In this embodiment, the rubber pad 3 is specifically located between the ear and the mounting part. The screw passes through the ear, the rubber pad 3 and the outer shell 1 in sequence, thereby locking the volute 21 inside the outer shell 1. The rubber pad 3 can reduce the noise generated by the resonance of the outer shell 1, thus playing a noise reduction role.

[0044] Preferably, the dust removal unit 23 includes a stepper motor 231 and a dust sweeping rod 232. The stepper motor 231 is fixedly connected to the side of the volute 21 facing away from the external air conditioner unit. The filter screen 213 has a through hole 2131 on one side for the output end of the stepper motor 231 to pass through. The output end of the stepper motor 231 is fixedly connected to the dust sweeping rod 232. The dust sweeping rod 232 is located on the side of the filter screen 213 facing away from the volute 21. The side of the dust sweeping rod 232 near the filter screen 213 has bristles that abut against the filter screen 213.

[0045] Through the above design, the sweeping angle of the sweeping rod 232 can be controlled by the stepper motor 231, and the length of the sweeping rod 232 is sufficient to cover all the mesh holes of the filter screen 213 in one direction. This ensures that the sweeping rod 232 can sweep all the mesh holes of the filter screen 213 once when it sweeps around the filter screen 213. The bristles of the sweeping rod 232 are made of wear-resistant bristles, and the bristles are pre-pressed and attached to the surface of the filter screen 213, which is beneficial to the sweeping force of the bristles on the filter screen 213.

[0046] Preferably, a drainage groove 12 is provided at the bottom inside the outer casing 1.

[0047] In this embodiment, the drainage trough 12 is located below the filter screen 213 and the dust removal unit 23. Therefore, the drainage trough 12 can not only drain the cooling water, but also carry away the dust swept off by the filter screen 213 through the cooling water.

[0048] Preferably, the outer casing 1 is provided with an air inlet grille 13, and the top of the outer casing 1 is provided with a handle 14.

[0049] In this embodiment, the air intake grille of the outer casing 1 facilitates the entry of external air into the outer casing 1, and the negative pressure generated by the fresh air unit 22 in the volute 21 achieves ventilation, while the handle 14 facilitates the operator to move the entire outer casing 1 and install the outer casing 1 on one side of the air conditioner outdoor unit.

[0050] Example 2: Please see Figure 9A control method for an automatic dust removal fresh air conditioner outdoor unit, used to control the dust removal function of the automatic dust removal fresh air conditioner outdoor unit of Embodiment 1, includes a first preset time T1, a second preset time T2, a first dust removal action and a second dust removal action. The first dust removal action is that the dust removal unit 23 rotates 360 degrees in the forward direction and then rotates 360 degrees in the reverse direction to reset. The second dust removal action is that the dust removal unit 23 rotates 1080 degrees in the forward direction and then rotates 1080 degrees in the reverse direction to reset.

[0051] When the fresh air conditioner is turned on, and the interval between the last time the fresh air conditioner is turned on or the last time the dust cleaning action is performed is greater than or equal to the first preset time T1, then the first dust cleaning action is performed; when the fresh air conditioner is turned off, and the continuous running time of the fresh air conditioner or the interval between the last time the dust cleaning action is performed is greater than or equal to the second preset time T2, then the second dust cleaning action is performed.

[0052] When the fresh air conditioner receives a command to turn on the fresh air function, the control module first checks whether the actual interval since the last fresh air function was turned on or since the last dust removal exceeds a preset time T1. It should be noted that the control module uses a PLC controller as described in Embodiment 1, which is well known to those skilled in the art and will not be elaborated here. If the preset time T1 is exceeded, a first dust removal action is performed; if not, no dust removal action is performed. When the fresh air function is turned off or the air conditioner is turned off, the control module checks whether the actual interval since the last fresh air function was turned on or since the last dust removal action was started exceeds a preset time T2. If so, a second dust removal action is performed; if not, no dust removal action is performed. In addition, the control module calculates the operating duration of the fresh air function. If the operating duration of the fresh air function exceeds the preset time T2, and no dust removal action has been performed during the operating duration of the fresh air function, the control module controls the dust removal unit 23 to perform a first dust removal action, and after the first dust removal action is completed, the record of the operating duration of the fresh air function is cleared.

[0053] Preferably, the first preset time T1 is 8 hours, the second preset time T2 is 24 hours, the first preset angle is 360 degrees, and the second preset angle is 1080 degrees.

[0054] In this embodiment, the first preset time T1 is 8 hours and the second preset time T2 is 24 hours, but T1 and T2 can be adjusted according to actual needs.

[0055] Therefore, the specific dust removal actions in this embodiment are as follows:

[0056] The first dust removal action involves the dust removal unit 23 rotating 360 degrees clockwise to perform a full circumference cleaning of the filter screen 213, followed by a 360-degree counterclockwise rotation to perform a reverse full circumference cleaning of the filter screen 213. The second dust removal action involves the dust removal unit 23 rotating 1080 degrees clockwise to perform a three-circumference cleaning of the filter screen 213, followed by a 1080-degree counterclockwise rotation to perform a reverse three-circumference cleaning of the filter screen 213. This ensures that the dust on the filter screen 213 is removed according to the actual situation when the fresh air conditioner is turned on and off, ensuring that the filter screen 213 remains clean when the fresh air conditioner is turned on and when it is turned off, thus improving the overall cleanliness of the filter screen 213.

[0057] Furthermore, the above provides a detailed description of an automatic dust removal outdoor unit for a fresh air conditioner and its control method provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An automatic dust-removing outdoor unit for a fresh air conditioner, characterized in that, It includes a housing (1) and a fresh air module (2). The housing (1) is fixedly connected to one side of the outdoor unit of the air conditioner. The housing (1) has an installation chamber (11). The fresh air module (2) is fixedly connected to the housing (1) and located in the installation chamber (11). The fresh air module (2) is provided with a filter (213) and a dust removal unit (23), and the filter (213) is fixed at the air inlet end of the fresh air module (2); The dust removal unit (23) is fixed on the fresh air module (2) and is used to remove dust from the filter screen (213).

2. The automatic dust removal outdoor unit of a fresh air conditioner as described in claim 1, characterized in that, The fresh air module (2) includes a volute (21) and a fresh air unit (22). The volute (21) is fixedly connected inside the outer shell (1) and located inside the installation chamber (11). The volute (21) is provided with an air outlet (211) and a hollow part (212). The volute (21) is connected to an external pipe through the air outlet (211). The hollow part (212) is located on one side of the volute (21) and is the air inlet of the fresh air module (2). The filter (213) is fixedly connected to the volute (21) and covers the hollow part (212). The dust removal unit (23) is fixedly connected to the side of the volute (21) where the hollow part (212) is located. The fresh air unit (22) is fixedly connected inside the volute (21).

3. The automatic dust removal outdoor unit of a fresh air conditioner as described in claim 2, characterized in that, The fresh air unit (22) includes a fan (221) and a fan blade (223). The fan (221) is fixedly connected inside the volute (21) and located at the center of the volute (21). The output end of the fan (221) is provided with a connecting shaft (222). The fan blade (223) is fixedly connected to the outer peripheral wall of the connecting shaft (222) and the fan blade (223) is arranged circumferentially around the axis of the connecting shaft (222).

4. The automatic dust removal outdoor unit of a fresh air conditioner as described in claim 2, characterized in that, The outer casing (1) is fixed to one side of the outdoor unit of the air conditioner by screws, and the volute (21) is fixed inside the outer casing (1) by screws.

5. The automatic dust removal outdoor unit of a fresh air conditioner as described in claim 4, characterized in that, A rubber pad (3) is provided between the volute (21) and the outer shell (1).

6. The automatic dust removal outdoor unit of a fresh air conditioner as described in claim 2, characterized in that, The dust removal unit (23) includes a stepper motor (231) and a dust removal rod (232). The stepper motor (231) is fixedly connected to the side of the volute (21) facing away from the external air conditioning unit. The filter screen (213) has a through hole (2131) on one side for the output end of the stepper motor (231) to pass through. The output end of the stepper motor (231) is fixedly connected to the dust removal rod (232). The dust removal rod (232) is located on the side of the filter screen (213) facing away from the volute (21). The side of the dust removal rod (232) near the filter screen (213) has bristles, and the bristles abut against the filter screen (213).

7. The automatic dust removal outdoor unit of a fresh air conditioner as described in claim 1, characterized in that, A drainage groove (12) is provided at the bottom inside the outer casing (1).

8. The automatic dust removal outdoor unit of a fresh air conditioner as described in claim 1, characterized in that, The outer casing (1) is provided with an air intake grille (13), and the top of the outer casing (1) is provided with a handle (14).

9. A control method for an automatic dust removal outdoor unit of a fresh air conditioning system, characterized in that, The fresh air conditioner outdoor unit for controlling the automatic dust removal of any one of the above claims 1-9 includes a first preset time T1, a second preset time T2, a first dust removal action and a second dust removal action. The first dust removal action is that the dust removal unit (23) rotates 360 degrees in the forward direction and then rotates 360 degrees in the reverse direction to reset. The second dust removal action is that the dust removal unit (23) rotates 1080 degrees in the forward direction and then rotates 1080 degrees in the reverse direction to reset. When the fresh air conditioner is turned on, and the interval between the last time the fresh air conditioner was turned on or the last time the dust cleaning action was performed is greater than or equal to the first preset time T1, the first dust cleaning action is performed once; when the fresh air conditioner is turned off, and the continuous running time of the fresh air conditioner or the interval between the last time the dust cleaning action was performed is greater than or equal to the second preset time T2, the second dust cleaning action is performed once.

10. The control method for the automatic dust removal outdoor unit of a fresh air conditioner according to claim 9, characterized in that, The first preset time T1 is 8 hours, the second preset time T2 is 24 hours, the first preset angle is 360 degrees, and the second preset angle is 1080 degrees.

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