Automatic dust removal method for filter cloth of automobile air conditioner

Abstract

The invention discloses an automatic dust removal method for filter cloth of an automobile air conditioner, the method is based on a structure without dismounting the filter cloth, the original property of certain flexibility of the filter cloth is utilized, the filter cloth sequentially passes through a suction port of a vacuum pump, and dust is reversely sucked out and discharged out of an automobile. The space near the original automobile air conditioner is not occupied; in addition, the noise is very low in the automatic dust removal process, and the overall comfort of passengers cannot be affected; the service life of the air conditioner filter element is greatly prolonged, and the trouble of frequently replacing the air conditioner filter element of an automobile is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive air conditioning systems, and particularly to a method for automatically removing dust from automotive air conditioning filter cloths. Background Art

[0002] In the prior art, automotive air conditioning filter cloths are used to filter dust and impurities in the air. After long-term use, a large amount of dust will accumulate on the filter cloth, affecting the performance of the air conditioner and the air quality inside the vehicle. One of the traditional methods is to detect the dust accumulation on the filter cloth through a sensor. When the preset threshold is reached, the dust removal program is started.

[0003] The so-called dust removal program requires removing the filter cloth, or all passengers leaving the vehicle, blowing the surface of the filter cloth with high-pressure air, and using a vibrator to vibrate the filter cloth to make the dust fall off.

[0004] The fallen dust is collected by a dust suction device and stored in a dust collection box.

[0005] After the dust removal is completed, the sensor detects the dust accumulation on the filter cloth again. If the cleaning standard is not reached, the dust removal steps are repeated.

[0006] The technical solution disclosed in a patent application CN202410690852 is to remove the filter cloth and place it in a centrifuge, and stir the filter cloth during high-speed rotation to make the dust fly out.

[0007] It can be seen that the prior art all requires manual disassembly, cleaning or replacement of the filter cloth, which is cumbersome and inefficient. Therefore, it is of great significance to develop an automatic dust removal method. Summary of the Invention

[0008] The present invention is to solve the drawbacks of the prior art that the dust removal of the filter cloth is either to remove the filter cloth for cleaning, or to blow it with high-pressure air and use a vibrator to shake out the dust, which is noisy, cumbersome and inefficient. Instead, a technology is proposed that at any time, including during driving, when the sensor detects that the filter cloth needs to be cleaned, the motor for sliding the filter cloth and the vacuum pump are turned on, and the filter cloth is successively slid past the vacuum suction port to suck out the dust in the reverse direction.

[0009] The present invention is implemented as follows: In the first step, a structure for automatically removing dust from an automotive air conditioning filter cloth is first constructed. The structure is prepared as follows: The frame plane of the air conditioning intake frame is an integral plane surrounding the intake window. The filter cloth is strip-shaped and is joined end to end to form a roll. The upper and lower edges of the filter cloth are inserted into the filter cloth slots of the filter cloth strip, and then fixed by filter cloth fixing pins. The inner layer of the filter cloth and the filter cloth strip have a flat plane attached to the frame plane. The outer layer of the filter cloth is attached to the outside of the inner layer of the filter cloth, and the two are closely attached; Continuous pin holes are prepared on the filter cloth strip; Step 2: At one end of the rolled edge of the rolled filter cloth, prepare an upper large gear and a lower large gear to support the filter cloth roll. The upper teeth of the upper large gear are inserted into the pin holes above the filter cloth, and the lower teeth of the lower large gear are inserted into the pin holes below the filter cloth. The upper large gear and the lower large gear are connected to the main shaft; Step 3: Prepare a vertical frame that connects the upper cross plate and the lower cross plate. The upper shaft head and the lower shaft head of the main shaft are rotationally matched with the upper cross plate and the lower cross plate. Thus, when the main shaft rotates, it drives the filter cloth roll to rotate; Step 4: Install a motor on the lower cross plate. The small gear of the motor meshes with the lower teeth; Step 6: Fix an upper column on the upper cross plate, and fix an upper column plate at the other end of the upper column; Fix a lower column on the lower cross plate, and fix a lower column plate at the other end of the lower column; The upper column plate and the lower column plate are connected to the end of the dust suction sleeve, The dust suction sleeve is sleeved outside the main shaft, and air inlet holes are opened on the dust suction sleeve; Step 7: Fix a groove support frame on the vertical frame, which is connected to a suction groove. There is an outlet hole in the inner cavity of the suction groove, and the outlet hole is communicated with a trachea. The trachea is communicated with a vacuum pump, and the vacuum pump is also connected to an exhaust pipe; Suction holes are opened on the inner side wall of the suction groove; The filter cloth roll is sleeved between the suction groove and the dust suction sleeve; Step 8: An air flow sensor is installed closely to the filter cloth. When the air flow sensor detects that the air flow blocked by dust in the filter cloth is lower than the set value, the controller controls the vacuum pump and the motor to work. Due to the effect of negative pressure, the air flow enters through the air inlet space between the dust suction sleeve and the main shaft, and enters the inner space of the suction groove through the air inlet holes, the filter cloth, and the suction holes, and is discharged from the outlet hole, and finally discharged from the exhaust pipe. When the air flow sensor detects that the filter cloth has been cleaned, the controller controls the vacuum pump and the motor to stop running.

[0010] Both the filter cloth and the filter cloth strip are flexible.

[0011] A first pressure roller is arranged on the outside of the filter cloth roll near the upper column. At the other end of the filter cloth roll, a tension roller shaft is sleeved, and a second pressure roller is arranged on the outside of the filter cloth roll near the tension roller shaft.

[0012] The width of the connecting part of the upper column plate and the lower column plate with the dust suction sleeve is smaller than the outer diameter of the dust suction sleeve.

[0013] The diameters of the upper large gear and the lower large gear are such that when the upper teeth of the upper large gear are inserted into the pin holes above the filter cloth and the lower teeth of the lower large gear are inserted into the pin holes below the filter cloth, the inner layer of the filter cloth roll just adheres to the surface of the dust suction sleeve.

[0014] The air inlet holes opened on the dust suction sleeve are only prepared on the side opposite to the suction groove.

[0015] The suction groove is semi-circular.

[0016] An adjustment mechanism is provided in the groove support frame to adjust the distance between the suction groove and the dust suction sleeve.

[0017] This method is based on a structure that does not require the removal of the filter cloth. Utilizing the inherently flexible nature of the filter cloth, the filter cloth is sequentially passed through the suction port of the vacuum pump, and the dust is sucked out in the reverse direction and discharged outside the vehicle. Each component in the structure of the present invention is very compact and small, and does not occupy much space near the original automotive air conditioner. Moreover, the present invention generates very little noise during the automatic dust removal process and does not affect the overall comfort of the passengers. The present invention greatly extends the service life of the air conditioner filter element and reduces the trouble of frequently replacing the air conditioner filter element in the vehicle.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of embedding the filter cloth into the filter cloth card slot in a method for automatically removing dust from the filter cloth of an automotive air conditioner according to the present invention. The filter cloth and the filter cloth card slot form a flat plane to prevent air leakage at the suction port of the vacuum pump in the future. Figure 2 It is a schematic diagram of the vacuum pump sucking air in a method for automatically removing dust from the filter cloth of an automotive air conditioner according to the present invention. Among them, both the pump and the motor can use a flat shape to minimize the occupied space. Figure 3 It is a schematic diagram of three rollers in a method for automatically removing dust from the filter cloth of an automotive air conditioner according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] Reference Figures 1 to 3, implement a method for automatically removing dust from the filter cloth of an automotive air conditioner. The method includes: First step, first construct a structure for automatically removing dust from the filter cloth of an automotive air conditioner. The structure is prepared as follows: As Figure 1 shown: The frame plane 202 of the air conditioner intake frame 200 is an integral plane that surrounds the intake window 201. The filter cloth 1 is strip-shaped and is joined end to end to form a roll. The upper and lower edges of the filter cloth 1 are embedded in the filter cloth card slots 121 of the filter cloth card strip 12 and are then fixed by the filter cloth fixing pins 14. The inner layer of the filter cloth 1 and the filter cloth card strip 12 have a flat plane attached to the frame plane 202. The outer layer of the filter cloth is attached to the outside of the inner layer of the filter cloth, and the two are closely fitted; Prepare continuous pin holes 11 on the filter cloth card strip 12; Second step, as Figure 2 shown, at one end of the rolled edge of the rolled filter cloth, prepare an upper large gear 41 and a lower large gear 42 to support the filter cloth roll. The upper teeth 411 of the upper large gear 41 are embedded in the pin holes 11 above the filter cloth 1, and the lower teeth 421 of the lower large gear 42 are embedded in the pin holes 11 below the filter cloth 1. The upper large gear 41 and the lower large gear 42 are connected to the main shaft 4; This connection includes welding and bolt fastening; Third step, prepare a vertical frame 3. The vertical frame 3 connects the upper cross plate 6 and the lower cross plate 7. The upper and lower shaft heads of the main shaft 4 are rotationally matched with the upper cross plate 6 and the lower cross plate 7, such as bearings. Thus, when the main shaft 4 rotates, it drives the filter cloth roll to rotate; Fourth step, install a motor 5 on the lower cross plate 7. The small gear 51 of the motor 5 meshes with the lower teeth 421; Sixth step, fix an upper column 61 on the upper cross plate 6, and fix an upper column plate 62 at the other end of the upper column 61; Fix a lower column 71 on the lower cross plate 7, and fix a lower column plate 72 at the other end of the lower column 71; The upper column plate 62 and the lower column plate 72 are connected to the dust suction sleeve 8 at their ends; The dust suction sleeve 8 is sleeved outside the main shaft 4, and air inlet holes 81 are opened on the dust suction sleeve 8; Seventh step, fix a groove support frame 31 on the vertical frame 3, which is connected to an air suction groove 91. The space in the inner cavity of the air suction groove 91 has an outlet hole 93, and the outlet hole 93 is communicated with an air duct 94. The air duct 94 is connected to a vacuum pump 9, and the vacuum pump 9 is also connected to an exhaust pipe 95; Air suction holes 92 are opened on the inner side wall of the air suction groove 91; The filter cloth roll is sleeved between the air suction groove 91 and the dust suction sleeve 8; In the eighth step, an air flow sensor 10 is installed closely to the filter cloth 1. When the air flow sensor 10 detects that the dust in the filter cloth 1 obstructs the air flow rate to be lower than the set value, the controller controls the vacuum pump 9 and the motor 5 to work. Due to the effect of negative pressure, the air flow enters through the intake space 100 between the dust suction sleeve 8 and the main shaft 4, and passes through the intake holes 81, the filter cloth 1, and the suction holes 92 into the inner space of the suction groove 91, and is discharged from the discharge hole 93, and finally discharged from the exhaust pipe 95. When the air flow sensor 10 detects that the filter cloth 1 has been cleaned, the controller controls the vacuum pump 9 and the motor 5 to stop running.

[0023] Both the filter cloth 1 and the filter cloth clamping strip 12 are flexible. For example, the filter cloth clamping strip is made of plastic material.

[0024] As Figure 3 As shown, a first pressing roller 21 is arranged near the upper column 61 on the outer side of the filter cloth roll. At the other end of the filter cloth roll, a tensioning roller shaft 23 is sleeved, and a second pressing roller 22 is arranged on the outer side of the filter cloth roll near the tensioning roller shaft 23.

[0025] The width of the connecting part of the upper column plate 62 and the lower column plate 72 with the dust suction sleeve 8 is smaller than the outer diameter of the dust suction sleeve 8.

[0026] The diameters of the upper large gear 41 and the lower large gear 42 are such that when the upper teeth 411 of the upper large gear 41 are inserted into the pin holes on the upper surface of the filter cloth 1 and the lower teeth 421 of the lower large gear 42 are inserted into the pin holes on the lower surface of the filter cloth 1, the inner layer of the filter cloth roll just adheres to the surface of the dust suction sleeve 8.

[0027] The intake holes 81 opened on the dust suction sleeve 8 are only prepared on one side opposite to the suction groove 91.

[0028] The suction groove 91 is semi-circular.

[0029] An adjusting mechanism is arranged in the groove support frame 31 to adjust the distance between the suction groove 91 and the dust suction sleeve 8.

[0030] This method is based on a structure that does not require disassembling the filter cloth. Utilizing the property that the filter cloth originally has a certain flexibility, the filter cloth passes through the suction port of the vacuum pump in sequence, and the dust is sucked out in the reverse direction and discharged outside the vehicle. Each component in the structure of the present invention is very compact and small, and does not occupy much space near the original automotive air conditioner; moreover, the present invention generates very little noise during the automatic dust removal process and does not affect the overall comfort of the passengers; the present invention greatly extends the service life of the air conditioner filter element and reduces the trouble of frequently replacing the air conditioner filter element in the vehicle.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A method for automatic dust removal of automobile air conditioning filter cloth, characterized in that: The method comprises: The first step is to construct a structure for automatic dust removal of automobile air-conditioning filter cloth, wherein the structure is prepared as follows: the frame plane (202) of the air-conditioning air intake frame (200) is an integral plane, surrounding the air intake window (201); the filter cloth (1) is in the shape of a long strip, connected end to end to form a roll; the upper and lower sides of the filter cloth (1) are embedded in the filter cloth clamping groove (121) of the filter cloth clamping strip (12), and then fixed by the filter cloth fixing pin (14); the inner filter cloth (1) and the filter cloth clamping strip (12) have a flat surface attached to the frame plane (202); the outer filter cloth is attached to the outside of the inner filter cloth, and the two are tightly fitted; Preparing continuous pin holes (11) on the filter cloth clamping strip (12); In the second step, an upper large gear (41) and a lower large gear (42) are prepared at one end of the rolled filter cloth to support the filter cloth roll, the upper teeth (411) of the upper large gear (41) are embedded in the pin hole (11) above the filter cloth (1), and the lower teeth (421) of the lower large gear (42) are embedded in the pin hole (11) below the filter cloth (1), and the upper large gear (41) and the lower large gear (42) are connected to the main shaft (4); The third step is to prepare a stand (3), the stand (3) is connected to the upper horizontal plate (6) and the lower horizontal plate (7), and the upper shaft head and the lower shaft head of the main shaft (4) are rotatably matched with the upper horizontal plate (6) and the lower horizontal plate (7), thereby the main shaft (4) rotates, driving the filter cloth roll to rotate; Step 4: Install a motor (5) on the lower horizontal plate (7), and the pinion (51) of the motor (5) meshes with the lower gear (421); Step 6: fix the upper column (61) on the upper horizontal plate (6), and fix the upper column plate (62) on the other end of the upper column (61); A lower column (71) is fixed on the lower horizontal plate (7), and a lower column plate (72) is fixed to the other end of the lower column (71); the ends of the upper column plate (62) and the lower column plate (72) are connected to a dust suction sleeve (8); The dust suction sleeve (8) is sleeved on the outside of the main shaft (4), and an air inlet hole (81) is formed on the dust suction sleeve (8); Step 7: Fix a groove support frame (31) on the stand (3), which is connected to an air suction groove (91). The inner cavity of the air suction groove (91) has a lead-out hole (93), which is connected to an air guide pipe (94), which is connected to a vacuum pump (9), and the vacuum pump (9) is also connected to an exhaust pipe (95). An air suction hole (92) is formed on the inner wall of the air suction groove (91); The filter cloth is rolled and sleeved between the air suction groove (91) and the dust suction sleeve (8); In the eighth step, an airflow sensor (10) is installed close to the filter cloth (1). When the airflow sensor (10) detects that the dust in the filter cloth (1) blocks the airflow and the airflow rate is lower than the set value, the controller controls the vacuum pump (9) and the motor (5) to work. Due to the effect of negative pressure, the airflow enters through the air intake space (100) between the dust suction sleeve (8) and the main shaft (4), and enters the internal space of the air suction groove (91) through the air intake hole (81), the filter cloth (1), and the air suction hole (92), and is discharged from the outlet hole (93) and finally discharged from the exhaust pipe (95). When the airflow sensor (10) detects that the filter cloth (1) has been cleaned, the controller controls the vacuum pump (9) and the motor (5) to stop running.

2. The method for automatic dust removal of automobile air conditioning filter cloth according to claim 1, characterized in that: The filter cloth (1) and the filter cloth clamping strip (12) are both flexible.

3. The method for automatic dust removal of automobile air conditioning filter cloth according to claim 1, characterized in that: A first pressing roller (21) is arranged on the outer side of the filter cloth roll near the upper column (61), a tensioning roller shaft (23) is inserted into the other end of the filter cloth roll, and a second pressing roller (22) is arranged on the outer side of the filter cloth roll near the tensioning roller shaft (23).

4. The method for automatic dust removal of automobile air conditioning filter cloth according to claim 1, characterized in that: The width of the connection portion between the upper column plate (62) and the lower column plate (72) and the dust suction sleeve (8) is smaller than the outer diameter of the dust suction sleeve (8).

5. The method for automatic dust removal of automobile air conditioning filter cloth according to claim 1, characterized in that: The diameters of the upper large gear (41) and the lower large gear (42) are such that when the upper teeth (411) of the upper large gear (41) are embedded in the pin holes on the upper side of the filter cloth (1) and the lower teeth (421) of the lower large gear (42) are embedded in the pin holes on the lower side of the filter cloth (1), the inner surface of the filter cloth roll is exactly attached to the surface of the dust collection sleeve (8).

6. The method for automatic dust removal of automobile air conditioning filter cloth according to claim 1, characterized in that: The air inlet hole (81) opened on the dust suction sleeve (8) is only provided on one side opposite to the air suction groove (91).

7. The method for automatic dust removal of automobile air conditioning filter cloth according to claim 1, characterized in that: The air suction groove (91) is semicircular.

8. The method for automatic dust removal of automobile air conditioning filter cloth according to claim 1, characterized in that: An adjustment mechanism is provided in the groove support frame (31) to adjust the distance between the air suction groove (91) and the dust suction sleeve (8).

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