Direct expansion type air conditioning unit

Abstract

The utility model discloses a direct expansion type air conditioning unit, which belongs to the field of direct expansion type air conditioning units and comprises a base and a unit body arranged above the base, an air inlet frame is arranged on one side of the unit body, an air outlet frame is arranged at the top of the unit body, and protective frames are sleeved on the side walls of one ends of the air inlet frame and the air outlet frame far away from the unit body. Splicing grooves matched with the air inlet frame and the air outlet frame are formed in the sides, close to the unit body, of the two protection frames correspondingly. The end, away from the unit body, of the air inlet frame and the end, away from the unit body, of the air outlet frame are sleeved with the protection frame, the dust prevention assembly is arranged on the side, away from the unit body, of the protection frame, the preliminary dust prevention effect is achieved, dust prevention cotton is detachable and convenient to replace and clean, and the dust prevention effect of equipment can be kept; and the effect of further filtering air dust is achieved, and the dustproof effect of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of direct expansion air conditioning units, and more specifically, to a direct expansion air conditioning unit. Background Technology

[0002] Direct expansion air conditioning units encompass various types of air conditioning products, such as unitary air conditioners, ceiling air conditioners, ceiling-mounted ducted air conditioners, multi-split systems, and rooftop air conditioners. They also include dehumidifiers and precision air conditioners. Simply put, a direct expansion air conditioning unit is a unit with its own compressor. Because the liquid refrigerant in its refrigeration system evaporates directly in its evaporator coil, it absorbs heat from the air outside the coil to achieve cooling, hence the name.

[0003] Most existing direct expansion air conditioning units only use simple filter screens to filter the air entering the unit for dust prevention. Over time, this method leads to a large accumulation of dust on the filter screen, which may reduce the air intake efficiency and, in severe cases, affect the unit's operation. Therefore, to solve the above problems, we propose a direct expansion air conditioning unit. Utility Model Content

[0004] To solve the above problems, this utility model provides a direct expansion air conditioning unit, which adopts the following technical solution:

[0005] A direct expansion air conditioning unit includes a base and a unit body disposed on the base. An air inlet frame is provided on one side of the unit body, and an air outlet frame is provided on the top of the unit body. Protective frames are fitted on the sidewalls of the air inlet frame and the air outlet frame away from the unit body. The two protective frames have splicing grooves that match the air inlet frame and the air outlet frame respectively on the side of the two protective frames away from the unit body. Multiple through holes distributed in a rectangular array are provided on the side of the two protective frames away from the unit body. Filter screens and dust-absorbing cotton are provided inside the two protective frames. Fixing components are provided between the air inlet frame, the air outlet frame and the protective frame on the same side. Dustproof components are provided on the side of the two protective frames away from the unit body.

[0006] The base has drive wheels at each of its four corners, shock-absorbing components between the drive wheels and the base, two symmetrically distributed storage slots at the base, and a support component at the bottom.

[0007] By adopting the above technical solution, when using the equipment, the operator places the two protective frames at the ends of the air inlet and outlet frames away from the unit body, respectively, so that the splicing slots opened on one side of the protective frames fit into the side walls of the air inlet and outlet frames, which can achieve the initial installation of the protective frames. The air inlet frame, outlet frame, and the protective frame bracket on the same side are fixedly assembled by fixing components. Dustproof components are provided on the side of the protective frames away from the unit body, which plays a preliminary role in dust prevention. In addition, dust-absorbing cotton and filter screens are provided inside both protective frames to further filter dust in the air, which helps to improve the dust prevention efficiency of the equipment.

[0008] After the protective frame is installed, workers can move the equipment using the drive wheels to easily adjust its placement. A shock-absorbing component between the drive wheels and the base provides cushioning and helps maintain stability during movement. Once the equipment is in place, the support components can lift the base and the entire unit, lifting the drive wheels off the ground and providing stable support. As the unit operates, air enters through the intake frame. Dustproof components, dust-absorbing cotton, and filters filter dust from the air. The compressed air is then discharged through the exhaust frame. The dustproof components at the exhaust port prevent dust from entering the equipment when it is not in use, achieving a dust-proof effect.

[0009] Furthermore, the fixing assembly includes insert blocks fixedly installed on both sides of the two protective frames near the end of the unit body. Mounting blocks are fixedly installed on both sides of the air inlet and outlet frames. Each mounting block has a slot on the side away from the unit body that matches the insert block on the same side. A movable groove is formed on the inner wall of one side of the slot. A fixing block is slidably installed in each movable groove. A second spring is fixedly connected between the inner wall of the fixing block on the side away from the insert block and the inner wall of the movable groove on the same side. A fixing groove matching the fixing block on the side of the insert block near the second spring on the same side is formed. A toggle rod is fixedly installed on the side of the fixing block away from the filter screen on the same side. The toggle rod extends through the movable groove on the side away from the fixing block on the same side. Limiting blocks are fixedly installed on both sides of the fixing block near the end of the second spring on the same side. A limiting groove matching the limiting block is formed on the inner wall of the movable groove.

[0010] By adopting the above technical solution, the workers place the two protective frames at the ends of the air inlet and outlet frames away from the unit body, respectively. The splicing slots on one side of the protective frames are fitted onto the side walls of the air inlet and outlet frames, respectively. The insert blocks installed on the side walls of the protective frames are placed into the slots on the side walls of the mounting blocks on the same side. The insert blocks push the fixing blocks on the same side to slide into the movable slots on the same side, and the fixing blocks push the second spring on the same side to retract. When the insert blocks and the slots on the same side engage, the fixing blocks return to their original positions under the elastic force of the second spring on the same side, and engage with the fixing slots on the side walls of the insert blocks on the same side. This effectively fixes the insert blocks, thereby achieving the purpose of fixing... The protective frame serves two purposes: when the fixed block slides within the movable groove on the same side, the fixed block with the limiting block slides within the limiting groove on the same side. The cooperation between the limiting block and the limiting groove helps maintain the stability of the fixed block's sliding within the movable groove and prevents it from detaching from the movable groove. When the protective frame needs to be disassembled, the operator pushes the fixed block on the same side into the movable groove using a lever, thereby disengaging the fixed block from the insert block on the same side. This allows the insert block to be disassembled from the slot on the same side, facilitating the subsequent cleaning of the filter screen and dust-collecting cotton inside the protective frame and maintaining the equipment's filtration efficiency.

[0011] Furthermore, two symmetrically distributed support blocks are fixedly installed on both sides of the air inlet frame and the air outlet frame, and four symmetrically distributed positioning rods are fixedly installed on the side of the two protective frames near the unit body. The side wall of the support block is provided with positioning holes that match the positioning rods on the same side.

[0012] By adopting the above technical solution, when the splicing groove opened on one side of the protective frame is respectively fitted onto the side wall of the air inlet frame and the air outlet frame, the end of the protective frame is installed in the positioning hole opened on the side wall of the support block on the same side and slides. Through the cooperation of the positioning rod and the support block, the positioning of the protective frame is restricted, which helps to improve the accuracy of the installation of the protective frame.

[0013] Furthermore, the dustproof component includes a mounting bracket fixedly installed on the side of the two protective frames away from the unit body. Dustproof cotton is slidably installed inside each mounting bracket. Slider blocks are fixedly installed on both sides of the dustproof cotton. The inner walls of the two mounting brackets are provided with sliding grooves that match the sliders on the same side.

[0014] By adopting the above technical solution, the protective frame away from the unit body is equipped with dustproof cotton, which absorbs and filters dust in the air. The dustproof cotton and the mounting bracket on the same side are fixed by a slider and a groove, which makes it easy for staff to disassemble and clean the dustproof cotton, thus helping to maintain the dustproof effect of the equipment.

[0015] Furthermore, the shock absorption assembly includes shock absorbers disposed at the four corners of the bottom of the base, each shock absorber having a first spring sleeved on the side wall of its telescopic shaft, and the end of the shock absorber's telescopic shaft being connected to the top of the drive wheel on the same side.

[0016] By adopting the above technical solution, when the staff drives the equipment to move by driving the drive wheel, the first spring absorbs the vibration force generated when the equipment moves, and then the shock absorber counteracts the rebound force generated by the first spring in the same group, achieving the effect of shock absorption and buffering, which helps to maintain the stability of the equipment movement.

[0017] Furthermore, the support assembly includes two support plates disposed below the base. Two symmetrically distributed cylinders are fixedly installed on the inner walls of the top of each of the two storage slots. The piston shaft ends of the two cylinders on the same side are fixedly connected to the top of the support plate on the same side. Stabilizing plates are fixedly installed on both sides of the two support plates. Anti-slip pads are provided at the bottom of the support plates and stabilizing plates.

[0018] By adopting the above technical solution, when the equipment moves to a suitable position, the cylinder drives the support plate and the stabilizing plate on the same side to descend synchronously, so that the support plate and the stabilizing plate contact the ground. As the base and the unit body rise under the action of the reverse force of the cylinder, the drive wheel is lifted off the ground. Through the cooperation of the cylinder, the support plate and the stabilizing plate, the equipment can be supported and stabilized.

[0019] Furthermore, four symmetrically distributed baffles are fixedly installed on the side of each of the two filter screens near the unit body. The baffles and the protective frame on the same side are fixed together by bolts. Positioning blocks are fixedly installed on both sides of the two filter screens. Positioning grooves matching the positioning blocks on the same side are opened on the inner wall of the two protective frames.

[0020] By adopting the above technical solution, the staff places the filter screen inside the protective frame, so that the positioning blocks installed on both sides of the filter screen slide in the positioning grooves opened inside the protective frame on the same side. The cooperation between the positioning blocks and the positioning grooves helps to maintain the accuracy of the filter screen installation. After the filter screen is positioned, the cooperation between the stop block and the bolt can fix the filter screen, which is convenient for subsequent disassembly and cleaning of the filter screen and helps to maintain the dustproof filtration effect of the equipment.

[0021] In summary, this utility model has the following beneficial technical effects:

[0022] (1) In this utility model, the air inlet frame and the air outlet frame are fitted with protective frames at the ends away from the unit body. The protective frames at the ends away from the unit body play a preliminary dust prevention role through the setting of dustproof components. The dustproof cotton is detachable, which is convenient for replacement and cleaning, and helps to maintain the dustproof effect of the equipment. In addition, the protective frames are equipped with filter screens and dust-absorbing cotton to further filter air dust, which helps to improve the dustproof effect of the equipment.

[0023] (2) In this utility model, the air inlet frame, the air outlet frame and the protective frame on the same side are fixed together by a fixing component, which makes it easy for staff to disassemble and clean the filter screen and dust-absorbing cotton inside the protective frame, and helps to maintain the dustproof effect of the equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This utility model Figure 1 Enlarged view of A in the middle;

[0026] Figure 3 This utility model Figure 1 Enlarged view of B in the middle;

[0027] Figure 4 This is a cross-sectional view of the mounting block in this utility model;

[0028] Figure 5 This utility model Figure 4 Enlarged view of C in the middle;

[0029] Figure 6 This is a cross-sectional view of the air intake frame and the protective frame in this utility model;

[0030] Figure 7 This is a cross-sectional view of the base in this utility model.

[0031] Explanation of the labels in the diagram:

[0032] 1. Base; 2. Unit body; 3. Air inlet frame; 4. Protective frame; 5. Mounting bracket; 6. Dustproof cotton; 7. Mounting block; 8. Air outlet frame; 9. Shock absorber; 10. Support plate; 11. First spring; 12. Insert block; 13. Slider; 14. Support block; 15. Positioning rod; 16. Movable groove; 17. Second spring; 18. Slot; 19. Fixing block; 20. Filter screen; 21. Positioning block; 22. Dust-absorbing cotton; 23. Splicing groove; 24. Cylinder; 25. Storage groove. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following is in conjunction with the appendix Figure 1-7 The present invention will be described in further detail below.

[0037] Please see Figure 1-7A direct expansion air conditioning unit includes a base 1 and a unit body 2 disposed above the base 1. An air inlet frame 3 is provided on one side of the unit body 2, and an air outlet frame 8 is provided on the top of the unit body 2. Protective frames 4 are fitted onto the sidewalls of the air inlet frame 3 and the air outlet frame 8 away from the unit body 2. The side of each protective frame 4 near the unit body 2 has a splicing groove 23 that matches the air inlet frame 3 and the air outlet frame 8. Multiple through holes arranged in a rectangular array are provided on the side of each protective frame 4 away from the unit body 2. A filter screen 20 and a dust-absorbing cotton 22 are provided inside each protective frame 4. Fixing components are provided between the air inlet frame 3, the air outlet frame 8, and the protective frame 4 on the same side. The fixing components include inserts 12 fixedly installed on both sides of the two protective frames 4 near the end of the unit body 2. The air inlet frame 3 and the air outlet frame 8 are fixed on both sides. The mounting block 7 is installed. On the side of the mounting block 7 away from the unit body 2, there is a slot 18 that matches the plug block 12 on the same side. The inner wall of one side of the slot 18 has a movable groove 16. A fixed block 19 is slidably installed in the movable groove 16. A second spring 17 is fixedly connected between the inner wall of the fixed block 19 away from the plug block 12 and the side opposite to the movable groove 16 on the same side. The plug block 12 has a fixed groove that matches the fixed block 19 on the same side near the second spring 17 on the same side. A toggle rod is fixedly installed on the side of the fixed block 19 away from the filter screen 20 on the same side. The toggle rod passes through the movable groove 16 on the same side on the side away from the fixed block 19. Limit blocks are fixedly installed on both sides of the end of the fixed block 19 near the second spring 17 on the same side. A limit groove that matches the limit block on the same side is opened on the inner wall of the movable groove 16.

[0038] Each of the two filter screens 20 has four symmetrically distributed baffles fixedly installed on the side near the unit body 2. The baffles and the protective frame 4 on the same side are fixed with bolts. Positioning blocks 21 are fixedly installed on both sides of the two filter screens 20. The inner wall of the two protective frames 4 is provided with positioning grooves that match the positioning blocks 21 on the same side.

[0039] When using the equipment, the operator places the filter screen 20 inside the protective frame 4, so that the positioning blocks 21 installed on both sides of the filter screen 20 slide in the positioning grooves opened inside the protective frame 4 on the same side. The cooperation between the positioning blocks 21 and the positioning grooves helps to maintain the accuracy of the filter screen 20 installation. After the filter screen 20 is positioned, the cooperation between the stop block and the bolt can fix the filter screen 20, which is convenient for subsequent disassembly and cleaning of the filter screen 20 and helps to maintain the dustproof filtration effect of the equipment.

[0040] After the filter screen 20 is installed, the staff places the two protective frames 4 at the ends of the air inlet frame 3 and air outlet frame 8 away from the unit body 2, respectively, so that the splicing grooves 23 opened on one side of the protective frame 4 fit onto the side walls of the air inlet frame 3 and air outlet frame 8, which can achieve the initial installation of the protective frame 4. The insert block 12 installed on the side wall of the protective frame 4 is placed in the slot 18 opened on the side wall of the mounting block 7 on the same side, and the insert block 12 pushes the fixing block 19 on the same side to slide into the movable groove 16 on the same side, and the fixing block 19 pushes the second spring 17 on the same side to retract. When the insert block 12 and the slot 18 on the same side are engaged, the fixing block 19 returns to its original position under the elastic force of the second spring 17 on the same side, and the fixing block 19 engages with the fixing groove opened on the side wall of the insert block 12 on the same side, which can achieve the purpose of fixing the insert block 12. The function of 2 is to fix the protective frame 4. When the fixing block 19 slides in the movable groove 16 on the same side, the fixing block 19 with the limiting block slides in the limiting groove on the same side. The cooperation between the limiting block and the limiting groove helps to maintain the stability of the fixing block 19 sliding in the movable groove 16 and helps to prevent the fixing block 19 from leaving the movable groove 16 on the same side. When it is necessary to disassemble the protective frame 4, the operator pushes the fixing block 19 on the same side into the movable groove 16 by using the lever, thereby disengaging the fixing block 19 from the insert block 12 on the same side. This allows the insert block 12 to be disengaged from the slot 18 on the same side, thus disassembling the protective frame 4. This facilitates the subsequent cleaning of the filter screen 20 and the dust collection cotton 22 inside the protective frame 4, which helps to maintain the filtration effect of the equipment.

[0041] Two symmetrically distributed support blocks 14 are fixedly installed on both sides of the air inlet frame 3 and the air outlet frame 8. Four symmetrically distributed positioning rods 15 are fixedly installed on the side of the two protective frames 4 near the unit body 2. The side wall of the support block 14 is provided with positioning holes that match the positioning rods 15 on the same side. When the splicing groove 23 opened on one side of the protective frame 4 is respectively fitted onto the side wall of the air inlet frame 3 and the air outlet frame 8, the end of the protective frame 4 is installed on the positioning rod 15 and slides into the positioning hole opened on the side wall of the support block 14 on the same side. Through the cooperation of the positioning rod 15 and the support block 14, the positioning of the protective frame 4 is restricted, which helps to improve the installation accuracy of the protective frame 4.

[0042] Dustproof components are provided on the side of each of the two protective frames 4 away from the unit body 2. The dustproof components include mounting brackets 5 fixedly installed on the side of the two protective frames 4 away from the unit body 2. Dustproof cotton 6 is slidably installed in the mounting brackets 5. Slider blocks 13 are fixedly installed on both sides of the dustproof cotton 6. The inner walls of the two mounting brackets 5 are provided with sliding grooves that match the slider blocks 13 on the same side. The dustproof cotton 6 on the side of the protective frame 4 away from the unit body 2 plays the role of absorbing and filtering dust in the air. The dustproof cotton 6 and the mounting brackets on the same side are fixed together by the slider blocks 13 and the sliding grooves, which makes it easy for the staff to disassemble and clean the dustproof cotton 6, and helps to maintain the dustproof effect of the equipment.

[0043] The base 1 has drive wheels at each of its four corners. A shock-absorbing assembly is provided between the drive wheels and the base 1. The shock-absorbing assembly includes shock absorbers 9 located at the four corners of the base 1. Each shock absorber 9 has a first spring 11 sleeved on the side wall of its telescopic shaft. The end of the telescopic shaft of the shock absorber 9 is connected to the top of the drive wheel on the same side. When the operator drives the equipment to move by the drive wheels, the first spring 11 absorbs the vibration force generated by the movement of the equipment. Then, the shock absorber 9 counteracts the rebound force generated by the first spring 11 in the same group, achieving the effect of shock absorption and buffering, which helps to maintain the stability of the equipment movement.

[0044] The base 1 has two symmetrically distributed storage slots 25 at its bottom. A support assembly is provided at the bottom of the base 1, including two support plates 10 positioned below the base 1. Two symmetrically distributed cylinders 24 are fixedly installed on the inner walls of the tops of each of the two storage slots 25. The piston shaft ends of the two cylinders 24 on the same side are fixedly connected to the top of the support plate 10 on the same side. Stabilizing plates are fixedly installed on both sides of the two support plates 10. Anti-slip pads are provided at the bottom of both the support plates 10 and the stabilizing plates. When the equipment moves to a suitable position, the cylinders 24 drive the support plates 10 and stabilizing plates on the same side to descend synchronously, bringing them into contact with the ground. As the base 1 and the unit body 2 rise under the reverse force of the cylinder 24, the drive wheel is lifted off the ground. Through the cooperation of the cylinder 24, the support plate 10 and the stabilizing plate, the equipment can be supported and stabilized. After the equipment is supported, air enters the unit body 2 through the air inlet frame 3. The dustproof components, dust-absorbing cotton 22 and filter screen 20 can filter the dust in the air. The air is compressed inside the unit body 2 and then discharged through the air outlet frame 8. The dustproof components at the outlet frame 8 help to prevent dust from entering the equipment when it is not in use, thus achieving the effect of dust prevention.

[0045] The implementation principle of this utility model embodiment is as follows: When using the equipment, the operator places the two protective frames 4 at the ends of the air inlet frame 3 and the air outlet frame 8 away from the unit body 2, respectively, so that the splicing groove 23 opened on one side of the protective frame 4 is respectively fitted onto the side wall of the air inlet frame 3 and the air outlet frame 8, which can play the role of initial installation of the protective frame 4. The air inlet frame 3, the air outlet frame 8 and the bracket of the protective frame 4 on the same side are fixedly assembled by the fixing components. The side of the protective frame 4 away from the unit body 2 is provided with dustproof components, which play the role of initial dust prevention. In addition, both protective frames 4 are provided with dust-absorbing cotton 22 and filter screen 20, which further filter the dust in the air and improve the dust prevention efficiency of the equipment.

[0046] After the protective frame 4 is installed, the equipment can be moved by the drive wheels, making it easy to adjust the placement of the equipment. A shock-absorbing component is installed between the drive wheels and the base 1 to achieve a shock-absorbing and buffering effect, which helps maintain the stability of the equipment movement. When the equipment is moved to its placement location, the support component can drive the base 1 to lift the entire unit body 2, thus lifting the drive wheels off the ground and providing stable support for the unit body 2, which helps maintain the stability of the unit body 2 during use. Subsequently, as the unit body 2 operates, air enters the interior of the unit body 2 through the air inlet frame 3. The dustproof component, dust-absorbing cotton 22, and filter screen 20 filter dust from the air. The air is compressed inside the unit body 2 and then discharged through the air outlet frame 8. The dustproof component at the outlet frame 8 helps prevent dust from entering the equipment when it is not in use, achieving a dustproof effect.

[0047] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A direct expansion air conditioning unit comprising a base (1) and a unit body (2) disposed above the base (1), characterized in that: The machine set body (2) one side is equipped with the air inlet frame (3), the machine set body (2) top is equipped with the air outlet frame (8), the air inlet frame (3) and air outlet frame (8) are away from the end side wall of machine set body (2) are equipped with the protective frame (4), two the protective frame (4) are close to the side of machine set body (2) respectively be equipped with with air inlet frame (3) and air outlet frame (8) matching splicing groove (23), two the protective frame (4) are away from the side of machine set body (2) all be equipped with multiple rectangular array distribution's through -hole, two the protective frame (4) all be equipped with filter screen (20) and dust absorption cotton (22), the air inlet frame (3) and air outlet frame (8) and same side the protective frame (4) between all be equipped with fixed component, two the protective frame (4) are away from the side of machine set body (2) all be equipped with dustproof component; The base (1) bottom end four corners are equipped with driving wheel, the driving wheel and the base (1) bottom end between all be equipped with damping component, the base (1) bottom end is equipped with two symmetrically distributed storage groove (25), the base (1) bottom is equipped with support component.

2. A direct expansion air handling unit as set forth in claim 1, further characterized by: The fixed component includes the plug-in block (12) fixedly installed on the two protective frame (4) close to the end two sides of machine set body (2), the air inlet frame (3) and air outlet frame (8) both sides are all fixedly installed with mounting block (7), the mounting block (7) is away from the side of machine set body (2) all be equipped with with the plug-in block (12) on the same side matching plug-in groove (18), the plug-in groove (18) one side inner wall is equipped with movable slot (16), the movable slot (16) all be equipped with fixed block (19) in sliding, the fixed block (19) is away from the side of the plug-in block (12) on the same side with the inner wall of the movable slot (16) on the opposite side all are fixedly connected with second spring (17), the plug-in block (12) is close to the side of the second spring (17) on the same side is equipped with with the fixed block (19) on the same side matching fixed slot, the fixed block (19) is away from the side of the filter screen (20) on the same side all be equipped with with the movable rod, the movable rod is away from the side of the fixed block (19) on the same side penetrates the movable slot (16) on the same side, the fixed block (19) is close to the end two sides of the second spring (17) on the same side all be equipped with with the movable slot (16) inner wall matching limit block, the limit slot.

3. The direct expansion air handling unit of claim 1, wherein: The air inlet frame (3) and air outlet frame (8) both sides are all fixedly installed with two symmetrically distributed support block (14), two the protective frame (4) close to the side of machine set body (2) all be equipped with four symmetrically distributed positioning rod (15), the support block (14) side wall is equipped with with the positioning rod (15) on the same side matching positioning hole.

4. The direct expansion air handling unit of claim 1, wherein: The dustproof component includes the mounting bracket (5) fixedly installed on the two protective frame (4) away from the side of machine set body (2), the mounting bracket (5) all be equipped with dustproof cotton (6) in sliding, the dustproof cotton (6) both sides all be equipped with sliding block (13), two the mounting bracket (5) inner wall is equipped with with the sliding block (13) on the same side matching sliding slot.

5. A direct expansion air handling unit as set forth in claim 1, further characterized by: The damping assembly comprises dampers (9) arranged at the four corners of the bottom end of the base (1), the side walls of the telescopic shafts of the dampers (9) are sleeved with first springs (11), and the end portions of the telescopic shafts of the dampers (9) are connected with the top ends of the driving wheels on the same side.

6. A direct expansion air handling unit as set forth in claim 1, further characterized by: The supporting assembly comprises two supporting plates (10) arranged below the base (1), the inner walls of the top ends of the two receiving grooves (25) are fixedly provided with two air cylinders (24) which are symmetrically distributed, the end portions of the piston shafts of the two air cylinders (24) on the same side are fixedly connected with the top ends of the supporting plates (10) on the same side, the two supporting plates (10) are fixedly provided with stable plates on the two sides, and the bottom ends of the supporting plates (10) and the stable plates are provided with anti-skid pads.

7. A direct expansion air handling unit as set forth in claim 1, further characterized by: The two filtering screens (20) are fixedly provided with four symmetrically distributed stop blocks on one side close to the machine body (2), the stop blocks and the protective frames (4) on the same side are fixed through bolts, the two filtering screens (20) are fixedly provided with positioning blocks (21) on the two sides, and the inner walls of the two protective frames (4) are provided with positioning grooves matched with the positioning blocks (21) on the same side.

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