Internal and external circulation type energy-saving air conditioning unit

Abstract

The utility model discloses an internal and external circulation type energy-saving air conditioning unit, which belongs to the technical field of air conditioners and comprises a unit body, an inner air inlet frame is arranged on one side of the unit body, an outer air inlet frame is communicated with one side of the inner air inlet frame, and an exhaust frame is arranged on one side, far away from the inner air inlet frame, of the unit body. Mounting frames sleeve ports of the inner air inlet frame and the outer air inlet frame, a plurality of through holes distributed in a rectangular array are formed in the sides, away from the inner air inlet frame, of the two mounting frames, dust collection cotton and filter screens are arranged in the two mounting frames, and fixing assemblies are arranged between the inner air inlet frame and the outer air inlet frame and between the inner air inlet frame and the outer air inlet frame and between the mounting frames on the same side. The installation frame covers the end portions of the inner air inlet frame and the outer air inlet frame, the dustproof cotton is arranged on the outer side of the installation frame, the effect of preliminarily filtering air dust is achieved, the dust collection cotton and the filter screen are arranged in the installation frame, the effect of filtering air is achieved, and the dust filtering effect of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to an energy-saving air conditioning unit with internal and external circulation. Background Technology

[0002] An air conditioning unit, through a single air conditioning unit and ductwork, distributes air from the unit to various rooms, thereby replacing the air in multiple rooms and keeping the air clean. An air conditioning unit with both external and internal circulation can exchange outside air with indoor air, or vice versa. The advantage of external circulation is that it can introduce fresh air, while the advantage of internal circulation is that it can maintain stable indoor temperature and humidity, especially effective when rapid cooling or insulation is needed.

[0003] Some existing air conditioning units with internal and external circulation systems lack dust filtration structures in their air intake pipes. Air enters the unit and is filtered by its own filtration system. However, with prolonged use, this filtration system may become clogged, reducing its effectiveness and lowering the unit's overall performance. Furthermore, excessive dust can increase energy consumption. Therefore, to address these issues, we propose an energy-saving air conditioning unit with internal and external circulation systems. Utility Model Content

[0004] To solve the above problems, this utility model provides an energy-saving air conditioning unit with internal and external circulation, adopting the following technical solution:

[0005] An energy-saving air conditioning unit with internal and external circulation includes a unit body. An inner air intake frame is provided on one side of the unit body, and an outer air intake frame is connected to one side of the inner air intake frame. An exhaust frame is provided on the side of the unit body away from the inner air intake frame. Mounting frames are fitted at the ports of both the inner and outer air intake frames. Multiple through holes arranged in a rectangular array are opened on the side of both mounting frames away from the inner air intake frame. Dust-absorbing cotton and a filter screen are provided inside both mounting frames. Fixing components are provided between the inner air intake frame, the outer air intake frame, and the mounting frames on the same side. Mounting brackets are provided on the side of both mounting frames away from the inner air intake frame. Dustproof cotton is provided inside the mounting brackets. The mounting brackets and the mounting frames on the same side are fixed by bolts.

[0006] Both the inner and outer air intake frames are provided with mounting boxes on one side. Support rods are rotatably installed inside both the inner and outer air intake frames. Baffles are fixedly fitted on the side walls of the support rods. One end of each support rod in the same group passes through the mounting box on the same side. A drive assembly is provided between the side walls of the support rods in the same group that pass through the mounting box on the same side.

[0007] By adopting the above technical solution, when using the equipment, the operator places the equipment in a suitable position and fits the mounting frame onto the ports of the inner and outer air intake frames. A fixing component is provided between the inner and outer air intake frames and the mounting frame on the same side to fix the mounting frame, which helps maintain the stability of the assembly between the inner and outer air intake frames and the mounting frame on the same side. Then, the outer air intake frame is connected to the outside, while the inner air intake frame is located indoors. When internal circulation is needed, the drive component drives the support rod inside the outer air intake frame to rotate the corresponding baffles. Through the cooperation of multiple baffles, the outer air intake frame is closed. Subsequently, the drive component drives the support rod inside the inner air intake frame to rotate the corresponding baffles. Rotating 90 degrees opens the inner air intake frame, allowing the unit to operate and draw indoor air into the unit through the inner air intake frame. The side of the mounting frame furthest from the inner air intake frame is equipped with dustproof cotton, which provides initial filtration of airborne dust. The mounting frame also contains suction cotton and a filter screen for further filtration, reducing the workload on the unit's built-in filter and minimizing the possibility of blockage due to excessive dust. This helps maintain the unit's performance and reduces energy consumption. Cooled or heated air is then exhausted into the room through the exhaust frame, achieving internal recirculation.

[0008] When external air circulation is required, the drive assembly rotates the support rod inside the external air intake frame, causing the baffle in the same group to rotate 90 degrees, thus opening the external air intake frame. Subsequently, the drive assembly drives the support rod inside the internal air intake frame, causing the baffle in the same group to rotate, thus closing the internal air intake frame. Then, the unit body operates, allowing indoor air to enter the unit body through the external air intake frame. The mounting frame has dustproof cotton on the side away from the internal air intake frame, which can initially filter dust in the air. The mounting frame also has dust-collecting cotton and a filter screen, which can further filter dust in the air. Then, the cooled or heated air is discharged into the room through the exhaust frame, thus achieving the function of external air circulation.

[0009] Furthermore, the fixing assembly includes mounting blocks fixedly installed on both sides of the inner air intake frame and the outer air intake frame. Two symmetrically distributed inserts are fixedly installed on the side of each mounting frame near the inner air intake frame. The side wall of the mounting block is provided with a slot that matches the insert on the same side. The inner wall of the top and bottom of the slot is provided with a movable groove. A limit rod is slidably installed in each movable groove. A spring is fixedly connected between the opposite ends of the two limit rods on the same side and the inner wall of the movable groove on the same side. The top and bottom of the insert are provided with a limit groove that matches the limit rod on the same side.

[0010] By adopting the above technical solution, when the installation frame needs to be assembled, the operator places the installation frame onto the ports of the inner and outer air intake frames. This allows the insert block installed on the side wall of the installation frame to be placed in the slot opened on the side wall of the same-side installation block. When the insert block moves into the slot on the same side, the insert block pushes the limit rod on the same side to slide into the movable groove on the same side, and the limit rod pushes the spring on the same side to retract. When the insert block and the slot are fully engaged, the limit rod returns to its original position under the elastic force of the spring on the same side, and engages with the limit groove opened on the side wall of the insert block on the same side. This can fix the insert block and thus fix the installation frame. Through the cooperation of the insert block, slot, and limit rod, it is convenient for the operator to disassemble the installation frame later, which facilitates the cleaning of the dust collection cotton and filter screen, and helps maintain the filtration effect of the equipment.

[0011] Furthermore, two symmetrically distributed sliders are fixedly installed on the opposite sidewalls of the two limiting rods on the same side, and the inner wall of the movable groove is provided with a groove that matches the slider on the same side.

[0012] By adopting the above technical solution, when the limiting rod slides in the same side movable groove, the limiting rod, along with the slider, slides in the same side sliding groove. The cooperation between the slider and the sliding groove helps to maintain the stability of the limiting rod's sliding and helps to prevent the limiting rod from disengaging from the same side movable groove.

[0013] Furthermore, the drive assembly includes a driven gear fixedly sleeved on the support rod and passing through one end side wall of the mounting box on the same side. Both mounting boxes are equipped with a reduction motor. Both output shafts of the two reduction motors are fixedly sleeved with drive gears. A rack belt is provided between the drive gear and the multiple driven gears on the same side. Retaining rings are fixedly installed on both sides of the drive gear and the driven gears.

[0014] By adopting the above technical solution, the drive gear on the same side is driven to rotate by the geared motor. The drive gear drives multiple driven gears on the same side to rotate synchronously through the rack belt. The driven gears drive the support rods in the same group to rotate, and the support rods drive the baffles in the same group to rotate. This can open and close the inner air intake frame and the outer air intake frame. In addition, there are retaining rings on both sides of the drive gear and the driven gear to restrict the rack belt, which helps to prevent the rack belt from disengaging from the drive gear and the driven gear, and helps to maintain the transmission efficiency of the equipment.

[0015] Furthermore, each of the two mounting boxes is provided with a mounting plate, and two symmetrically distributed telescopic rods are fixedly installed on the inner wall of one side of each of the two mounting boxes. The ends of the two telescopic rods on the same side are fixedly connected to the side opposite to the mounting plate on the same side. Multiple rollers distributed in a linear array are rotatably installed on the side of each of the two mounting plates away from the telescopic rods on the same side, and the rollers on the same side are in contact with the side opposite to the rack belt on the same side.

[0016] By adopting the above technical solution, when the equipment drives multiple driven gears on the same side to rotate through the rack belt, the mounting plate and roller on the same side are driven by the telescopic rod to move the rack belt in the same direction synchronously, and the roller contacts the opposite side of the rack belt, which can play the role of squeezing the rack belt, which is beneficial to maintaining the stability of the meshing between the rack belt and the driven gear on the same side.

[0017] Furthermore, positioning frames are fixedly installed at the bottom and top of both the inner and outer air intake frames, and two positioning rods matching the positioning frames on the same side are fixedly installed on the side of each mounting frame closest to the inner air intake frame.

[0018] By adopting the above technical solution, the side wall of the mounting frame is provided with a positioning rod. When the mounting frame is fitted onto the inner air intake frame or the outer air intake frame, the positioning rod installed on the side wall of the mounting frame moves into the positioning frame on the same side. Through the insertion of the positioning rod and the positioning frame, the mounting frame is positioned and stabilized.

[0019] Furthermore, each of the two mounting brackets has four symmetrically distributed fixing rods fixedly installed on the side of the mounting frame near the same side, and each of the two mounting frames has a fixing groove matching the fixing rods on the side of the mounting bracket near the same side.

[0020] By adopting the above technical solution, when installing the mounting bracket and dustproof cotton, the workers will fit the mounting bracket with the mounting frame. The side wall of the mounting bracket is equipped with a fixing rod, which engages with the fixing groove opened on the opposite side of the mounting frame to position and stabilize the mounting bracket, facilitating subsequent fixing.

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

[0022] (1) In this utility model, the mounting frame is installed at the ends of the inner air intake frame and the outer air intake frame. Dustproof cotton is provided on the outside of the mounting frame to play a preliminary role in filtering air dust. The mounting frame is also equipped with dust-absorbing cotton and filter screen to achieve the effect of air intake and filtration. This is beneficial to improve the equipment's dust filtration effect and helps reduce the possibility of the filter structure inside the unit being blocked due to excessive dust. This is beneficial to maintaining the performance of the unit and reducing energy consumption.

[0023] (2) In this utility model, the inner air intake frame, the outer air intake frame and the same side mounting frame are all assembled by fixing components, and the mounting frame is assembled with the same side mounting frame by bolts, which makes it convenient for staff to disassemble and clean the filter screen, dust collection cotton and dustproof cotton, which helps to maintain the filtration effect of the equipment.

[0024] (3) In this utility model, the support rod is driven by the drive component to rotate the baffle on the same side, which can open and close the inner air intake frame and the outer air intake frame, making it convenient for the unit body to circulate internally and externally. Furthermore, the different rotation angles of the baffle can adjust the amount of air entering the unit body. Attached Figure Description

[0025] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0026] Figure 2 This utility model Figure 1 Enlarged view of A in the middle;

[0027] Figure 3 This is a structural schematic diagram of the present invention from a second perspective;

[0028] Figure 4 This is a cross-sectional view of the mounting box and mounting frame in this utility model;

[0029] Figure 5 This utility model Figure 4 Enlarged view of B in the middle;

[0030] Figure 6 This utility model Figure 4 Enlarged view of C;

[0031] Figure 7 This utility model Figure 4 Enlarged view of D;

[0032] Figure 8 This is a cross-sectional view of the inner air intake frame and the outer air intake frame in this utility model;

[0033] Figure 9 This is an exploded view of the drive component in this utility model.

[0034] Explanation of the labels in the diagram:

[0035] 1. Unit body; 2. Inner air intake frame; 3. Mounting frame; 4. Dustproof cotton; 5. Mounting bracket; 6. Mounting box; 7. Outer air intake frame; 8. Mounting block; 9. Slot; 10. Insert block; 11. Positioning frame; 12. Positioning rod; 13. Exhaust frame; 14. Gear motor; 15. Driven gear; 16. Retaining ring; 17. Support rod; 18. Mounting plate; 19. Telescopic rod; 20. Rack and pinion belt; 21. Movable groove; 22. Spring; 23. Limiting rod; 24. Fixing rod; 25. Dust-absorbing cotton; 26. Filter screen; 27. Baffle; 28. Drive gear. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] The following is in conjunction with the appendix Figure 1-9 The present invention will be described in further detail below.

[0040] Please see Figure 1-9An energy-saving air conditioning unit with internal and external circulation includes a unit body 1. An inner air intake frame 2 is located on one side of the unit body 1, and an outer air intake frame 7 is connected to one side of the inner air intake frame 2. An exhaust frame 13 is located on the side of the unit body 1 away from the inner air intake frame 2. Mounting frames 3 are fitted at the ports of both the inner air intake frame 2 and the outer air intake frame 7. Multiple through holes arranged in a rectangular array are opened on the side of each mounting frame 3 away from the inner air intake frame 2. Dust-absorbing cotton 25 and a filter screen 26 are provided inside each mounting frame 3. Fixing components are provided between the inner air intake frame 2, the outer air intake frame 7, and the mounting frame 3 on the same side. The fixing components include fixing... Mounting blocks 8 are installed on both sides of the inner air intake frame 2 and the outer air intake frame 7. Two symmetrically distributed insert blocks 10 are fixedly installed on the side of each mounting frame 3 near the inner air intake frame 2. The side wall of the mounting block 8 has slots 9 that match the insert blocks 10 on the same side. The inner wall of the top and bottom of the slot 9 has movable grooves 21. Limiting rods 23 are slidably installed in the movable grooves 21. Springs 22 are fixedly connected between the opposite ends of the two limiting rods 23 on the same side and the inner wall of the opposite side of the movable groove 21 on the same side. The top and bottom of the insert blocks 10 have limiting grooves that match the limiting rods 23 on the same side.

[0041] When using the device, the operator places it in a suitable position and fits the mounting frame 3 onto the ports of the inner air intake frame 2 and the outer air intake frame 7. This allows the insert 10 mounted on the side wall of the mounting frame 3 to be placed into the slot 9 opened on the side wall of the mounting block 8 on the same side. When the insert 10 moves into the slot 9 on the same side, the insert 10 pushes the limit rod 23 on the same side to slide into the movable groove 21 on the same side. The limit rod 23 also pushes the spring 22 on the same side to retract. After the insert 10 and the slot 9 are fully engaged, the limit rod 23 returns to its original position under the elastic force of the spring 22 on the same side, and engages with the limit groove opened on the side wall of the insert 10 on the same side. This fixes the insert 10 and thus fixes the mounting frame 3. The cooperation of the insert 10, the slot 9, and the limit rod 23 makes it easy for the operator to disassemble the mounting frame 3, which facilitates the cleaning of the dust collection cotton 25 and the filter screen 26, thus helping to maintain the filtration effect of the device.

[0042] Two symmetrically distributed sliders are fixedly installed on the opposite sidewalls of the two limit rods 23 on the same side. The inner wall of the movable groove 21 is provided with a sliding groove that matches the slider on the same side. When the limit rod 23 slides in the movable groove 21 on the same side, the limit rod 23 slides in the sliding groove on the same side with the slider. The cooperation between the slider and the sliding groove helps to maintain the stability of the sliding of the limit rod 23 and helps to prevent the limit rod 23 from disengaging from the movable groove 21 on the same side.

[0043] Positioning frames 11 are fixedly installed at the bottom and top of the inner air intake frame 2 and the outer air intake frame 7. Two positioning rods 12 that match the positioning frames 11 on the same side are fixedly installed on the side of the two mounting frames 3 near the inner air intake frame 2. The mounting frame 3 has positioning rods 12 on its side wall. When the mounting frame 3 is fitted onto the inner air intake frame 2 or the outer air intake frame 7, the positioning rods 12 installed on the side wall of the mounting frame 3 move into the positioning frames 11 on the same side. The positioning rods 12 and the positioning frames 11 are inserted to fix the mounting frame 3 in place.

[0044] Each of the two mounting frames 3 is equipped with a mounting bracket 5 on the side away from the inner air intake frame 2. Each mounting bracket 5 is equipped with a dustproof cotton 4. The mounting bracket 5 and the mounting frame 3 on the same side are fixed together by bolts. Each of the two mounting brackets 5 is fixedly installed with four symmetrically distributed fixing rods 24 on the side of the mounting frame 3 on the same side. Each of the two mounting frames 3 is provided with a fixing groove that matches the fixing rods 24 on the side of the mounting bracket 5 on the same side.

[0045] Both the inner air intake frame 2 and the outer air intake frame 7 are provided with mounting boxes 6 on one side. Support rods 17 are rotatably installed in both the inner air intake frame 2 and the outer air intake frame 7. Baffles 27 are fixedly sleeved on the side walls of the support rods 17. One end of the support rods 17 in the same group passes through the mounting box 6 on the same side. A drive assembly is provided between the side walls of the support rods 17 passing through the mounting box 6 on the same side. The drive assembly includes a driven gear 15 fixedly sleeved on the side wall of the support rod 17 passing through the mounting box 6 on the same side. Both mounting boxes 6 are provided with reduction motors 14. Drive gears 28 are fixedly sleeved on the side walls of the output shafts of the two reduction motors 14. A rack belt 20 is provided between the drive gears 28 and the multiple driven gears 15 on the same side. Retaining rings 16 are fixedly installed on both sides of the drive gears 28 and the driven gears 15.

[0046] The geared motor 14 drives the drive gear 28 on the same side to rotate. The drive gear 28 drives multiple driven gears 15 on the same side to rotate synchronously via the rack belt 20. The driven gears 15 drive the support rods 17 in the same group to rotate, and the support rods 17 drive the baffles 27 in the same group to rotate. This can open and close the inner air intake frame 2 and the outer air intake frame 7. Both the drive gear 28 and the driven gears 15 are equipped with retaining rings 16 on both sides to restrict the rack belt 20, which helps to prevent the rack belt 20 from disengaging from the drive gear 28 and the driven gears 15, thus maintaining the transmission efficiency of the equipment. Both mounting boxes 6 are equipped with mounting plates 18, and two mounting plates 18 are fixedly installed on the inner wall of one side of each mounting box 6. The telescopic rods 19 are symmetrically distributed. The ends of the two telescopic rods 19 on the same side are fixedly connected to the opposite side of the mounting plate 18 on the same side. Multiple rollers arranged in a linear array are rotatably mounted on the side of the two mounting plates 18 away from the telescopic rods 19 on the same side. The rollers on the same side are in contact with the opposite side of the rack belt 20 on the same side. When the equipment drives the multiple driven gears 15 on the same side to rotate through the rack belt 20, the telescopic rods 19 drive the mounting plate 18 and rollers on the same side to move the rack belt 20 in the same direction synchronously, and make the rollers contact the opposite side of the rack belt 20, which can play the role of squeezing the rack belt 20, which is conducive to maintaining the stability of the meshing between the rack belt 20 and the driven gears 15 on the same side.

[0047] When internal circulation is required, the drive assembly drives the support rod 17 inside the outer air intake frame 7 to rotate the baffle 27 in the same group. Through the cooperation of multiple baffles 27, the outer air intake frame 7 is closed. Then, the drive assembly drives the support rod 17 inside the inner air intake frame 2 to rotate the baffle 27 in the same group by 90 degrees, thereby opening the inner air intake frame 2. Then, the unit body 1 operates, allowing indoor air to enter the unit body 1 through the inner air intake frame 2. The mounting frame 3 is equipped with dustproof cotton 4 on the side away from the inner air intake frame 2, which can play a preliminary role in filtering dust in the air. The mounting frame 3 is also equipped with dust-absorbing cotton 25 and filter screen 26, which can further filter dust in the air. This helps to reduce the workload of the filter structure built into the unit body 1 and helps to reduce the possibility of the filter structure built into the unit body 1 becoming blocked due to excessive dust. This helps to maintain the performance of the unit body 1 and reduce energy consumption. Then, the cooled or heated air is discharged into the room through the exhaust frame 13, thus achieving the function of internal circulation.

[0048] When external circulation is required, the drive assembly drives the support rod 17 inside the external air intake frame 7 to rotate the baffle 27 in the same group by 90 degrees, which opens the external air intake frame 7. Then, the drive assembly drives the support rod 17 inside the internal air intake frame 2 to rotate the baffle 27 in the same group, which closes the internal air intake frame 2. Then, the unit body 1 operates, allowing indoor air to enter the unit body 1 through the external air intake frame 7. The mounting frame 3 is equipped with dustproof cotton 4 on the side away from the internal air intake frame 2, which can play a preliminary role in filtering dust in the air. The mounting frame 3 is also equipped with dust-absorbing cotton 25 and filter screen 26 to further filter dust in the air. Then, the cooled or heated air is discharged into the room through the exhaust frame 13, which can play the role of external circulation. The drive assembly can drive the baffle 27 to rotate, changing the angle of the baffle 27, which can adjust the amount of air entering the equipment.

[0049] The implementation principle of this utility model embodiment is as follows: When using the equipment, the operator places the equipment in a suitable position and fits the mounting frame 3 onto the ports of the inner air intake frame 2 and the outer air intake frame 7. A fixing component is provided between the inner air intake frame 2, the outer air intake frame 7, and the mounting frame 3 on the same side, which serves to fix the mounting frame 3 and helps maintain the stability of the assembly between the inner air intake frame 2, the outer air intake frame 7, and the mounting frame 3 on the same side. Then, the outer air intake frame 7 is connected to the outside, and the inner air intake frame 2 is located indoors. When internal circulation is required, the support rod 17 inside the outer air intake frame 7 is driven by the drive component to rotate the baffle 27 in the same group. Through the cooperation of multiple baffles 27, the outer air intake frame 7 is closed. Then, the support rod 17 inside the inner air intake frame 2 is driven by the drive component to rotate the baffle 27 in the same group. The baffle 27 rotates 90 degrees, thereby opening the inner air intake frame 2. Then, the unit body 1 operates, allowing indoor air to enter the unit body 1 through the inner air intake frame 2. The mounting frame 3 is equipped with dustproof cotton 4 on the side away from the inner air intake frame 2, which can play a preliminary role in filtering dust in the air. The mounting frame 3 is also equipped with dust-absorbing cotton 25 and filter screen 26, which can further filter dust in the air. This helps to reduce the workload of the filter structure built into the unit body 1, and helps to reduce the possibility of the filter structure built into the unit body 1 becoming clogged due to excessive dust. This helps to maintain the performance of the unit body 1 and reduce energy consumption. Then, the cooled or heated air is discharged into the room through the exhaust frame 13, which can play a role in internal circulation.

[0050] When external air circulation is required, the drive assembly drives the support rod 17 inside the external air intake frame 7 to rotate the baffle 27 in the same group by 90 degrees, which opens the external air intake frame 7. Then, the drive assembly drives the support rod 17 inside the internal air intake frame 2 to rotate the baffle 27 in the same group, which closes the internal air intake frame 2. Then, the unit body 1 operates, allowing indoor air to enter the unit body 1 through the external air intake frame 7. The mounting frame 3 is equipped with dustproof cotton 4 on the side away from the internal air intake frame 2, which can play a preliminary role in filtering dust in the air. The mounting frame 3 is also equipped with dust-absorbing cotton 25 and filter screen 26 to further filter dust in the air. Then, the cooled or heated air is discharged into the room through the exhaust frame 13, which can play the role of external circulation.

[0051] 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. An energy-saving air conditioning unit of internal-external circulation type, comprising a unit body (1), characterized in that: The unit body (1) is provided with an inner air intake frame (2) on one side, and an outer air intake frame (7) is connected to one side of the inner air intake frame (2). The unit body (1) is provided with an exhaust frame (13) on the side away from the inner air intake frame (2). An installation frame (3) is provided at the port of both the inner air intake frame (2) and the outer air intake frame (7). Multiple through holes in a rectangular array are opened on the side of both installation frames (3) away from the inner air intake frame (2). Dust-absorbing cotton (25) and a filter screen (26) are provided in both installation frames (3). Fixing components are provided between the inner air intake frame (2), the outer air intake frame (7), and the installation frame (3) on the same side. An installation bracket (5) is provided on the side of both installation frames (3) away from the inner air intake frame (2). Dustproof cotton (4) is provided in both installation brackets (5). The installation bracket (5) and the installation frame (3) on the same side are fixed by bolts. The inner air intake frame (2) and the outer air intake frame (7) are each provided with a mounting box (6) on one side. The inner air intake frame (2) and the outer air intake frame (7) are each rotatably installed with a support rod (17). The side wall of the support rod (17) is fixedly fitted with a baffle (27). One end of the support rod (17) in the same group passes through the mounting box (6) on the same side. A drive assembly is provided between the side wall of the support rod (17) in the same group that passes through the mounting box (6) on the same side.

2. The energy-saving air conditioning unit of the internal-external circulation type according to claim 1, characterized in that: The fixing assembly includes mounting blocks (8) fixedly installed on both sides of the inner air intake frame (2) and the outer air intake frame (7). Two symmetrically distributed insert blocks (10) are fixedly installed on the side of each mounting frame (3) near the inner air intake frame (2). The side wall of the mounting block (8) is provided with a slot (9) that matches the insert block (10) on the same side. The inner wall of the top and bottom of the slot (9) is provided with a movable groove (21). Limiting rods (23) are slidably installed in the movable grooves (21). A spring (22) is fixedly connected between the opposite end of the two limiting rods (23) on the same side and the inner wall of the opposite side of the movable groove (21) on the same side. The top and bottom of the insert block (10) are provided with limiting grooves that match the limiting rods (23) on the same side.

3. The energy-saving air conditioning unit of claim 2, wherein: Two symmetrically distributed sliders are fixedly installed on the opposite sidewalls of the two limiting rods (23) on the same side, and the inner wall of the movable groove (21) is provided with a groove that matches the slider on the same side.

4. The energy-saving air conditioning unit of claim 1, wherein: The drive assembly includes a driven gear (15) fixedly sleeved on the support rod (17) and passing through one end side wall of the mounting box (6) on the same side. Both mounting boxes (6) are equipped with a reduction motor (14). The output shaft side wall of both reduction motors (14) is fixedly sleeved with a drive gear (28). A rack belt (20) is provided between the drive gear (28) and the multiple driven gears (15) on the same side. Retaining rings (16) are fixedly installed on both sides of the drive gear (28) and the driven gears (15).

5. The energy-saving air conditioning unit of claim 4, wherein: Each of the two mounting boxes (6) is provided with a mounting plate (18). Two telescopic rods (19) are fixedly installed on the inner wall of one side of each of the two mounting boxes (6). The ends of the two telescopic rods (19) on the same side are fixedly connected to the side opposite to the mounting plate (18) on the same side. Multiple rollers arranged in a straight array are rotatably installed on the side of the two mounting plates (18) away from the telescopic rods (19) on the same side. The rollers on the same side are in contact with the side opposite to the rack belt (20) on the same side.

6. The energy-saving air conditioning unit of the internal-external circulation type according to claim 1, characterized in that: The bottom and top of the inner air intake frame (2) and the outer air intake frame (7) are both fixedly installed with positioning frames (11), and two positioning rods (12) that match the positioning frames (11) on the same side are fixedly installed on the side of the two mounting frames (3) near the inner air intake frame (2).

7. The energy-saving air conditioning unit of claim 1, wherein: Each of the two mounting brackets (5) has four symmetrically distributed fixing rods (24) fixedly installed on the side of the mounting frame (3) on the same side. Each of the two mounting frames (3) has a fixing groove that matches the fixing rods (24) on the side of the mounting bracket (5) on the same side.

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