Air supply and dust removal device of heating ventilation air conditioner

Abstract

The utility model discloses an air supply and dust removal device for a heating ventilation air conditioner. The air supply and dust removal device comprises an air supply pipe, a filter plate, an access door and a dust scraping plate, according to the scheme, the access door is rotated downwards relative to the air supply pipe to expose the filter plate, and in the process of rotating the access door, the first scraping plate and the second scraping plate which abut against the filter plate can scrape and grind the windward side of the filter plate, so that accumulated dust on the filter plate falls on the inner wall of the access door or the inner wall of the air supply pipe; after the access door rotates downwards by 90 degrees to reach the maximum opening position, the first scraping plate can scrape and grind most areas on the filter plate, and the remaining areas on the filter plate are scraped and ground by the second scraping plate, that is, along with the complete opening of the access door, the windward side of the filter plate can be completely scraped and ground, and accumulated dust on the filter plate can fall on the inner wall of the access door, so that the dust on the filter plate can be completely scraped and ground. And the filter plate is dedusted on the premise that the ventilation pipeline does not need to be disassembled, and the influence of dust deposition on the filter plate on the energy consumption of the air conditioner is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy saving of heating, ventilation and air conditioning, in particular to an air supply and dust removal device for heating, ventilation and air conditioning. Background Art

[0002] The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. Due to its excellent performance, it is widely used in major supermarkets and office buildings. In order to adjust the internal ambient temperature of the building, it is necessary to lay the corresponding air supply duct in the building so that the cold air or hot air generated by the central air conditioner can be delivered to the interior of the building faster and more evenly. During use, due to dust and impurities in the ambient air, it is necessary to add a dustproof net inside the air supply duct to prevent excessive dust from adhering to the inner wall of the air supply duct. However, the dustproof net is easily blocked by dust, etc., and the staff needs to stop the machine to disassemble and clean it, which is time-consuming and laborious. Utility Model Content

[0003] In view of this, the utility model provides a HVAC air supply dust removal device, which can expose the filter plate by rotating the inspection door downward relative to the air supply duct. In the process of rotating the inspection door, the first scraper and the second scraper abutting the filter plate can scrape the windward surface of the filter plate, so that the accumulated dust on the filter plate falls on the inner wall of the inspection door or the inner wall of the air supply duct. After the inspection door is rotated downward by ninety degrees to reach the maximum opening position, the first scraper can scrape most of the area on the filter plate, and the remaining area on the filter plate is scraped by the second scraper. That is, as the inspection door is fully opened, the windward surface of the filter plate can be completely scraped, and the accumulated dust on the filter plate can fall on the inner wall of the inspection door and fall with the opened inspection door, so as to achieve dust removal of the filter plate without disassembling the ventilation duct, thereby reducing the influence of the accumulated dust on the filter plate on the energy consumption of the air conditioner.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A heating, ventilation and air conditioning air supply and dust removal device, comprising:

[0006] An air supply pipe having a filter plate and an inspection door, wherein the inspection door is hinged to the air supply pipe and the inspection door is rotated downward to open;

[0007] A dust scraper abuts against the windward surface of the filter plate, the dust scraper comprising a first scraper fixed to the inspection door, and a second scraper fixed to both the first scraper and the inspection door; when the inspection door is closed, the first scraper overlaps with at least the upper half of the edge of the filter plate; after the inspection door is rotated ninety degrees to open, the second scraper overlaps with part of the edge of the filter plate; when the inspection door is closed and opened, the boundary between the first scraper and the second scraper overlaps with the edge of the filter plate.

[0008] Preferably, the filter plate is in the shape of a disc coaxially arranged with the air supply pipe, and the air supply pipe is threadedly connected with a mounting bolt that passes through the air supply pipe and is used for threadingly connecting the filter plate.

[0009] Preferably, the first scraper is in the shape of a semicircular ring, extending from the hinged end of the inspection door to the movable end of the inspection door, and the second scraper is in the shape of a quarter arc, extending from the hinged end of the inspection door to the midpoint of the first scraper.

[0010] Preferably, a sealing rib for clamping the filter plate is fixed to the inner wall of the inspection door, and at least a portion of the sealing rib is integrally formed with the first scraper.

[0011] Preferably, an auxiliary rib spaced apart from the sealing rib is fixed to the inner wall of the inspection door, and a dust collecting groove is formed between the sealing rib and the auxiliary rib.

[0012] Preferably, the side of the sealing rib facing away from the filter plate has a first guiding inclined surface, and the side of the auxiliary rib facing the filter plate has a second guiding inclined surface.

[0013] Preferably, a sealing cover for covering the hinged end of the inspection door is fixedly connected to the inner wall of the air supply duct.

[0014] Preferably, the inspection door is connected to the air supply duct by bolts.

[0015] It can be seen from the above technical scheme that the HVAC air supply dust removal device provided by the utility model exposes the filter plate by rotating the inspection door downward relative to the air supply duct. In the process of rotating the inspection door, the first scraper and the second scraper abutting the filter plate can scrape the windward surface of the filter plate, so that the accumulated dust on the filter plate falls on the inner wall of the inspection door or the inner wall of the air supply duct. After the inspection door is rotated downward by ninety degrees to reach the maximum opening position, the first scraper can scrape most of the area on the filter plate, and the remaining area on the filter plate is scraped by the second scraper. That is, as the inspection door is fully opened, the windward surface of the filter plate can be completely scraped, and the accumulated dust on the filter plate can fall on the inner wall of the inspection door and fall with the opened inspection door, so as to achieve dust removal of the filter plate without disassembling the ventilation duct, thereby reducing the influence of the accumulated dust on the filter plate on the air conditioning energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram showing the structure of a HVAC air supply and dust removal device according to an exemplary embodiment;

[0018] Figure 2 is a schematic diagram showing a dust scraper structure according to an exemplary embodiment;

[0019] Figure 3 is a schematic diagram showing the position of a dust collecting tank according to an exemplary embodiment;

[0020] Figure 4 According to an exemplary embodiment, Figure 3 The middle is an enlarged view of part A showing the position of the first guide slope.

[0021] Reference numerals:

[0022] 1. Air supply duct; 11. Inspection door; 12. Ear plate; 13. Mounting bolts; 14. Sealing cover; 2. Dust scraper plate; 21. First scraper plate; 22. Second scraper plate; 3. Sealing rib; 31. Auxiliary rib; 32. First guide slope; 33. Second guide slope; 4. Filter plate; 5. Dust collecting trough; 6. Mounting trough. DETAILED DESCRIPTION

[0023] The utility model discloses a heating and ventilation air conditioning air supply dust removal device, which can expose a filter plate by rotating an inspection door downward relative to the air supply duct. In the process of rotating the inspection door, a first scraper and a second scraper abutting against the filter plate can scrape and grind the windward surface of the filter plate, so that accumulated dust on the filter plate falls on the inner wall of the inspection door or the inner wall of the air supply duct. After the inspection door is rotated downward by ninety degrees to reach the maximum opening position, the first scraper can scrape and grind most of the area on the filter plate, and the remaining area on the filter plate is scraped and grinded by the second scraper. That is, as the inspection door is fully opened, the windward surface of the filter plate can be completely scraped and grinded, and the accumulated dust on the filter plate can fall on the inner wall of the inspection door and fall with the opened inspection door, so as to achieve dust removal on the filter plate without disassembling the ventilation duct, thereby reducing the influence of accumulated dust on the filter plate on the energy consumption of the air conditioner.

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In an exemplary embodiment of the present disclosure, a HVAC air supply and dust removal device is provided, such as Figure 1 As shown, Figure 1is a schematic diagram showing the structure of a HVAC air supply and dust removal device according to an exemplary embodiment; Figure 2 is a schematic diagram showing a dust scraper structure according to an exemplary embodiment; Figure 3 is a schematic diagram showing the position of a dust collecting tank according to an exemplary embodiment; Figure 4 According to an exemplary embodiment, Figure 4 The middle is an enlarged view of the A part showing the position of the first guide slope. Figures 1 to 4 Provide explanation.

[0026] Some specific implementation modes described below are intended to facilitate those skilled in the art to understand the present embodiment, and the present embodiment is not limited to some specific implementation modes described below.

[0027] Reference Figure 1 and Figure 2 An exemplary embodiment of the present disclosure provides a HVAC air supply and dust removal device, the HVAC air supply and dust removal device comprising:

[0028] The air supply pipe 1 has a filter plate 4 and an inspection door 11, the inspection door 11 is hinged to the air supply pipe 1, and the inspection door 11 is rotated downward to open;

[0029] The scraper plate 2 abuts against the windward surface of the filter plate 4. The scraper plate 2 includes a first scraper plate 21 fixed to the inspection door 11, and a second scraper plate 22 fixed to both the first scraper plate 21 and the inspection door 11. When the inspection door 11 is closed, the first scraper plate 21 overlaps with at least the upper half of the edge of the filter plate 4. After the inspection door 11 is rotated ninety degrees to open, the second scraper plate 22 overlaps with part of the edge of the filter plate 4. When the inspection door is closed and opened, the boundary between the first scraper plate 21 and the second scraper plate 22 overlaps with the edge of the filter plate 4.

[0030] For example, refer to Figure 1 and Figure 2 The air supply pipe 1 is in the shape of a horizontal circular tube, and the inspection door 11 is opened on the outer wall of the air supply pipe 1 and occupies the lower half of the partial circular area of ​​the air supply pipe 1 in a semi-circular shape. The inspection door 11 after closing forms part of the side wall of the air supply pipe 1. One end of the inspection door 11 is hinged to the outer wall of the air supply pipe 1, and the other end is fixedly connected to an ear plate 12. The ear plate 12 is also fixed at the corresponding position on the air supply pipe 1. The inspection door 11 and the air supply pipe 1 are connected by bolts penetrating the two ear plates 12.

[0031] When the inspection door 11 is closed, the filter plate 4 is in the shape of a disc coaxially arranged with the air supply pipe 1, the arcuate side wall of the upper part of the filter plate 4 abuts the inner wall of the air supply pipe 1, and the arcuate side wall of the lower part of the filter plate 4 abuts the inner wall of the inspection door 11, and the air supply pipe 1 is threadedly connected with mounting bolts 13 that penetrate the air supply pipe 1 and are used for threaded connection with the filter plate 4. The mounting bolts 13 are arranged along the radial direction of the air supply pipe 1 and are arranged on both sides of the air supply pipe 1 with the hinged end of the inspection door 11 (that is, the mounting bolts 13 are located on the outer wall of the air supply pipe 1 on the side of the movable end of the inspection door 11).

[0032] The gas flow direction in the air supply pipe 1 is fixed, the filter plate 4 faces the direction of the air flow as the windward side, the first scraper 21 is semicircular, and the first scraper 21 extends from the hinged end of the inspection door 11 to the movable end of the inspection door 11. When the inspection door 11 is closed, the first scraper 21 overlaps with the upper edge of the filter plate 4. When the inspection door 11 is turned downward by 90 degrees and is in the maximum open state, the first scraper 21 penetrates the filter plate from the side of the filter plate 4 close to the hinged end of the inspection door 11. 4 and extends downward; the second scraper 22 is in a quarter arc shape, and the second scraper 22 extends from the hinged end of the inspection door 11 to the midpoint of the first scraper 21. When the inspection door 11 is closed, the second scraper 22 extends from the side of the hinged end of the filter plate 4 close to the inspection door 11 to the top of the filter plate 4. When the inspection door 11 is rotated downward by ninety degrees and is in the maximum open state, the second scraper 22 overlaps with the edge of the lower half of the filter plate 4 close to the hinged end of the inspection door 11.

[0033] In this embodiment, the filter plate 4 is exposed by rotating the inspection door 11 downward relative to the air supply duct 1. During the rotation of the inspection door 11, the first scraper 21 and the second scraper 22 abutting against the filter plate 4 can scrape the windward surface of the filter plate 4, so that the dust accumulated on the filter plate 4 falls on the inner wall of the inspection door 11 or the inner wall of the air supply duct 1. After the inspection door 11 is rotated downward by ninety degrees to reach the maximum opening position, the first scraper 21 can scrape most of the area on the filter plate 4, and the remaining area on the filter plate 4 is scraped by the second scraper 22. That is, as the inspection door 11 is fully opened, the windward surface of the filter plate 4 can be completely scraped, and the dust accumulated on the filter plate 4 can fall on the inner wall of the inspection door 11 and fall with the opened inspection door 11, so as to achieve dust removal of the filter plate 4 without disassembling the ventilation duct, thereby reducing the impact of dust accumulation on the filter plate 4 on the air conditioning energy consumption.

[0034] In an exemplary embodiment of the present disclosure, referring to Figure 3 and Figure 4 A sealing rib 3 for clamping the filter plate 4 is fixed to the inner wall of the inspection door 11 , and at least a portion of the sealing rib 3 is integrally formed with the first scraper 21 .

[0035] For example, refer to Figure 3 and Figure 4The sealing rib 3 is integrally formed on the inner wall of the inspection door 11. There are two sealing ribs 3 and they are spaced apart on the inspection door 11 along the axial direction of the air supply pipe 1. A mounting groove 6 for accommodating the filter plate 4 is formed between the two sealing ribs 3. The two sealing ribs 3 are both semi-annular, and one of the sealing ribs 3 is integrally formed with the first scraper 21, that is, one of the sealing ribs 3 and the first scraper 21 together form a circular ring structure. After the inspection door 11 is closed, the filter plate 4 is located between the two sealing ribs 3, and the two end faces of the filter plate 4 respectively abut the side walls of the two sealing ribs 3.

[0036] An auxiliary rib 31 is fixed to the inner wall of the inspection door 11 and is spaced apart from the sealing rib 3. The auxiliary rib 31 is located at the end face of the inspection door 11 and is spaced apart from the sealing rib 3. The side wall of the auxiliary rib 31 facing away from the filter plate 4 is flush with the side wall of the inspection door 11 facing away from the filter plate 4. When the inspection door 11 is closed, the side wall of the auxiliary rib 31 facing away from the filter plate 4 is flush with the side wall of the air supply duct 1 facing the inspection door 11, and the top surface of the auxiliary rib 31 is flush with the inner wall of the air supply duct 1.

[0037] The space between the sealing rib 3 and the auxiliary rib 31 forms a dust collecting groove 5. After the inspection door 11 is opened, the dust scraped by the first scraper 21 and the second scraper 22 can fall into the dust collecting groove 5. After the inspection door 11 is opened to the maximum extent, the dust in the dust collecting groove 5 can be removed through the movable end of the inspection door 11. In order to enable the dust in the air supply pipe 1 to be collected in the dust collecting groove 5 more stably and efficiently, the side of the sealing rib 3 facing away from the filter plate 4 has a first guide slope 32, and the side of the auxiliary rib 31 facing the filter plate 4 has a second guide slope 33, and the first guide slope 32 and the second guide slope 33 are arranged opposite to each other. Similarly, an inclined surface (not indicated in the figure) can also be set on the side wall of the second scraper 22 facing the first scraper 21 to reduce the possibility of dust accumulation remaining at the boundary between the second scraper 22 and the filter plate 4.

[0038] In this embodiment, a sealing cover 14 for covering the hinged end of the inspection door 11 is fixedly connected to the inner wall of the air supply duct 1. The sealing cover 14 is integrally formed on the inner wall of the air supply duct 1 at the hinged end of the inspection door 11. When the inspection door 11 is closed, the sealing cover 14 fills the inside of the dust collecting groove 5, and the dust collecting groove 5 is simultaneously in contact with the sealing rib 3 and the auxiliary rib 31. In other embodiments, a sponge pad or a rubber pad can also be fixed to the side of the sealing cover 14 facing the hinged end of the inspection door 11, and the sealing effect is improved by squeezing the aforementioned rubber pad through the closed inspection door 11. Similarly, a sealing strip can also be added to the edge of the aforementioned inspection door 11 to improve air tightness.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A HVAC air supply dust removal device, characterized in that: include: An air supply pipe (1) having a filter plate (4) and an inspection door (11), wherein the inspection door (11) is hingedly connected to the air supply pipe (1), and the inspection door (11) is opened by rotating downward; A dust scraper (2) abuts against the windward surface of the filter plate (4), the dust scraper (2) comprising a first scraper (21) fixed to the inspection door (11), and a second scraper (22) fixed to both the first scraper (21) and the inspection door (11); when the inspection door (11) is closed, the first scraper (21) overlaps at least the upper half of the edge of the filter plate (4); after the inspection door (11) is rotated 90 degrees to open, the second scraper (22) overlaps part of the edge of the filter plate (4); when the inspection door (11) is closed and opened, the boundary between the first scraper (21) and the second scraper (22) overlaps the edge of the filter plate (4).

2. The HVAC air supply dust removal device according to claim 1, characterized in that: The filter plate (4) is in the shape of a disc and is arranged coaxially with the air supply pipe (1). The air supply pipe (1) is threadedly connected with a mounting bolt (13) that passes through the air supply pipe (1) and is used to threadably connect the filter plate (4).

3. The HVAC air supply dust removal device according to claim 2, characterized in that: The first scraper (21) is in the shape of a semicircular ring, and the first scraper (21) extends from the hinged end of the inspection door (11) to the movable end of the inspection door (11), and the second scraper (22) is in the shape of a quarter of a circle, and the second scraper (22) extends from the hinged end of the inspection door (11) to the midpoint of the first scraper (21).

4. The HVAC air supply and dust removal device according to claim 3, characterized in that: A sealing rib (3) for clamping the filter plate (4) is fixed to the inner wall of the inspection door (11), and at least a portion of the sealing rib (3) is integrally formed with the first scraper (21).

5. The HVAC air supply dust removal device according to claim 4, characterized in that: An auxiliary rib (31) spaced apart from the sealing rib (3) is fixed to the inner wall of the inspection door (11), and a dust collecting groove (5) is formed between the sealing rib (3) and the auxiliary rib (31).

6. The HVAC air supply dust removal device according to claim 5, characterized in that: The side of the sealing rib (3) facing away from the filter plate (4) has a first guiding inclined surface (32), and the side of the auxiliary rib (31) facing the filter plate (4) has a second guiding inclined surface (33).

7. The HVAC air supply dust removal device according to claim 1, characterized in that: A sealing cover (14) for covering the hinged end of the inspection door (11) is fixedly connected to the inner wall of the air supply pipe (1).

8. The HVAC air supply dust removal device according to claim 1, characterized in that: The inspection door (11) is bolted to the air supply pipe (1).

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