A fan coil unit convenient for maintenance

Abstract

The present invention relates to the technical field of fan coil units, and specifically relates to a fan coil unit that is convenient for maintenance, including an outer frame, a lower exhaust hood, and a coil main body clamped between its frames. Two groups of symmetrically distributed hanging plates are provided on the outer frame. Circular plate card slots are opened at the bottom surfaces of both ends of the hanging plates. A hoisting rod is rotatably installed on the coil main body, and a semi-circular clamping plate that cooperates with the circular plate card slot is provided at the top end of the hoisting rod. First joints are symmetrically connected to the centers of both ends of the coil main body. After the hanging plates lose the hoisting effect on the coil main body, the coil main body can slide down from the outer frame. Then, the exposed first joints can be connected to high-speed external water flow to flush and maintain the scale in the pipes of the coil main body. After the coil main body is flushed and maintained, reverse the above process to restore the cooperation state between the outer frame, the lower exhaust hood, and the coil main body. The operation process of this process is simple and the operation efficiency is relatively high.

Description

Technical Field

[0001] The present invention relates to the technical field of fan coil units, and specifically relates to a fan coil unit that is convenient for maintenance. Background Art

[0002] The fan coil unit is simply called a fan coil. It is one of the end devices of an air conditioning system composed of a small fan, a motor, and a coil (air heat exchanger), etc. When chilled water or hot water flows through the coil, heat exchange occurs with the air outside the pipe, causing the air to be cooled, dehumidified, or heated to adjust the indoor air parameters. It is a commonly used end device for cooling and heating.

[0003] At present, in the prior art, after the fan coil is used for a long time, a certain amount of water scale will accumulate on the inner wall of the coil pipe. The formation of this water scale will cause the liquid flow rate in the coil pipe to decrease, thereby affecting the overall heat and cold exchange efficiency of the fan coil. And this water scale needs to be flushed out under the action of high-speed water flow, but the air conditioning system cannot provide the high-speed water flow for cleaning the inner wall of the coil. In addition, after the fan coil is integrally installed with the end housing of the air conditioning system, the overall disassembly process is rather troublesome, and the conventional maintenance method of flushing the attached air hood cannot clean and maintain the inner wall of the coil.

[0004] Therefore, in view of the above problems, a fan coil unit that is convenient for maintenance is proposed. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve the problems that the formation of water scale will cause the liquid flow rate in the coil pipe to decrease, thereby affecting the overall heat and cold exchange efficiency of the fan coil. This water scale needs to be flushed out under the action of high-speed water flow, but the air conditioning system cannot provide the high-speed water flow for cleaning the inner wall of the coil. In addition, after the fan coil is integrally installed with the end housing of the air conditioning system, the overall disassembly process is rather troublesome, and the conventional maintenance method of flushing the attached air hood cannot clean and maintain the inner wall of the coil, a fan coil unit that is convenient for maintenance is proposed.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A fan coil unit that is convenient for maintenance according to the present invention includes an outer frame, a lower exhaust hood, and a coil main body clamped between its frames. Two groups of symmetrically distributed hanging plates are provided on the outer frame. Circular plate card slots are opened at both bottom ends of the hanging plates. A hoisting rod is rotatably installed on the coil main body, and a semi-circular clamping plate matching with the circular plate card slot is provided at the top end of the hoisting rod;

[0007] The two ends of the coil main body are symmetrically connected to a first joint at the center, and a joint card slot is opened inside the first joint;

[0008] Both ends of the coiled pipe body are provided with connecting pipe mechanisms. Each connecting pipe mechanism includes a sliding conduit slidably installed in the through hole of the first joint pipe. A sliding plate is fixedly connected to the outer wall of the sliding conduit, and the sliding plate is slidably installed between the inner walls of the joint card slots.

[0009] On the outside of the coiled pipe body, second joints for its water supply and drainage are symmetrically installed, and the second joints are slidably connected to the first joints.

[0010] Control mechanisms are installed at both ends of the coiled pipe body. Each control mechanism includes supporting side plates clamped on both sides of the first joint. A linkage plate is fixedly connected to the bottom surface of the supporting side plate, and one end of the linkage plate is linked with a hoisting rod.

[0011] Preferably, a semi-circular baffle is fixedly connected to the inner wall of the circular plate card slot. One end of the hoisting rod is fixedly connected with a semi-circular clamping plate, and the semi-circular clamping plate is clamped inside the circular plate card slot. The bottom surface of the semi-circular clamping plate contacts the top surface of the semi-circular baffle.

[0012] A first spring is sleeved on the outer wall of the sliding conduit. The first spring is fixedly connected to the side wall of the sliding plate close to the second joint. Contact rollers are symmetrically fixedly connected to the side wall of the sliding plate far from the second joint through brackets, and the contact rollers are linked with the control mechanism.

[0013] Preferably, supporting card slots are formed in the adjacent side walls of the two supporting side plates. The supporting card slots are clamped with the lower parts of the contact ends of the first joint and the second joint. Control racks are connected to the side walls of the two supporting side plates. A central gear is meshingly installed between the two control racks. The central gear is fixedly connected to the center of the bottom surface of the first joint. The two control racks are rotationally symmetric along the axis of the central gear. A rack hoisting block is slidably clamped between the inner side rails of the two control racks. The rack hoisting block is fixedly connected to the bottom surface of the first joint. Support side plates are vertically fixedly connected to the far ends of the two control racks. A side plate clamping block is fixedly connected to the end of the support side plate close to the second joint. The bottom surface of the side plate clamping block contacts a limit clamping block fixedly connected to the side wall of the second joint. A limit clamping seat is fixedly connected to the outside of the second joint, and the limit clamping seat is slidably butted with the first joint.

[0014] Preferably, an inclined surface baffle is fixedly connected to the through hole support on the top surface of the side wall of the supporting side plate. The inclined surface of the inclined surface baffle contacts the outer wall of the contact roller.

[0015] Preferably, linkage plates are fixedly connected to the bottom surfaces of the far ends of the two control racks through brackets. Sandwich circular plates are arranged at one ends of the two linkage plates. The centers of the top surfaces of the two sandwich circular plates are respectively fixedly connected to one ends of the two hoisting rods through support rods. The axis of the hoisting rod coincides with the axis of the sandwich circular plate.

[0016] Preferably, arc-shaped card slots are symmetrically formed on the inner wall of the sandwich circular plate. One end of the arc-shaped card slot coincides with the inner center of the sandwich circular plate, and the other end of the arc-shaped card slot is close to the outer wall edge of the sandwich circular plate. The arc-shaped card slot fits with the outer wall of the shaft rod at one end of the linkage plate.

[0017] Preferably, a positioning bracket is installed at the center of the bottom surface of the two sandwich circular plates through a bearing. One end of the positioning bracket is perpendicularly fixed to the end wall of the coil main body.

[0018] Preferably, a plurality of handle brackets are fixed to the side wall of the coil main body. Two adjacent handle brackets are symmetrically fixed to both sides of the positioning bracket.

[0019] Preferably, an adjustment handle is installed between the bottom surfaces of two adjacent sandwich circular plates through a bracket. The two ends of the adjustment handle are respectively fitted with the grooves at one end of two groups of same-side positioning brackets.

[0020] Preferably, a baffle card slot is formed at the center of the side wall of the second joint. An L-shaped baffle is clamped between the interiors of the baffle card slots. The inner wall of the through hole on the side wall of the L-shaped baffle coincides with the inner wall of the pipe connection of the second interface. One end of the L-shaped baffle is fixed with a second spring, and one end of the second spring is fixed to the top surface of the baffle card slot.

[0021] Advantages of the present invention:

[0022] 1. When the heat exchange efficiency of the fan coil is low and cannot be improved by cleaning the external air hood, first remove the lower exhaust air hood from the opening under the outer frame. At this time, the coil main body and the adjustment handle are completely exposed. Then, pull and rotate the adjustment handle outwards until its two ends are clamped with other handle brackets. During this process, the lifting rod and the control mechanism rotate half a week synchronously. While the supporting side plate is separated from the first joint and the second joint, the semi-circular clamping plate is separated from the semi-circular baffle. At this time, the hanging plate loses the lifting effect on the whole device, and the coil main body can slide down from the outer frame and the lower exhaust air hood. Then, the exposed first joint can be connected to the external high-speed water flow to wash and maintain the scale in the pipe of the coil main body. After the coil main body is washed and maintained, reverse the above process to restore the matching state among the outer frame, the lower exhaust air hood and the coil main body. The operation process of this process is simple and the operation efficiency is high.

[0023] 2. The first joint and the second joint are disassembled and assembled by sliding up and down. During the process of rotating the adjustment handle to disassemble the whole coil main body, the inclined surface stoppers moving away from each other cancel the extrusion force on the first spring. At this time, under the elastic force of the first spring, the whole sliding conduit contracts until one end of it can be completely hidden in the first joint, ensuring that the first spring for the pipe connection between the first joint and the second joint does not hinder the disassembly process of the coil main body.

[0024] 3. When the coil body and the first joint slide down as a whole to the second joint and disengage, the L-shaped baffle in the baffle slot loses its upward squeezing force. With the elastic force provided by the second spring, the L-shaped baffle side plate can block the pipe opening of the second joint to prevent liquid leakage in the air-conditioning system when the coil body is cleaned with external water. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 is a stereogram of the present invention;

[0027] Figure 2 It is a partially enlarged stereoscopic view of the outer frame and the hanging plate of the present invention;

[0028] Figure 3 is a stereoscopic diagram of the cooperation between the coil body and the second joint in the present invention;

[0029] Figure 4 It is a three-dimensional diagram of the partial structure of the coil body in the present invention when viewed from above;

[0030] Figure 5 It is a three-dimensional diagram of the linkage between the hanging rod and the adjusting handle in the present invention;

[0031] Figure 6 is a partially cutaway perspective view of the first joint in the present invention;

[0032] Figure 7 It is a three-dimensional diagram of the connecting pipe mechanism in the present invention;

[0033] Figure 8 is a three-dimensional diagram of the control mechanism of the present invention;

[0034] Figure 9 It is a partially cutaway stereoscopic view of the second joint in the present invention.

[0035] Legend:

[0036] 1. Outer frame; 2. Lower exhaust hood; 3. Coil body; 4. Hanging plate; 5. Connecting pipe mechanism; 6. Second joint; 7. Lifting rod; 8. Control mechanism; 9. Adjustment handle; 10. L-shaped baffle;

[0037] 31. first joint; 32. joint slot; 33. positioning bracket; 34. handle frame; 35. circular slot;

[0038] 41. round plate slot; 42. semicircular baffle;

[0039] 51. Sliding duct; 52. Slide plate; 53. First spring; 54. Contact roller;

[0040] 61. Limit clamping seat; 62. Limit clamping block; 63. Baffle card slot;

[0041] 71. Semi-circular clamping plate; 72. Sandwich core circular plate; 73. Arc card slot;

[0042] 81. Central gear; 82. Control rack; 83. Rack lifting block; 84. Supporting side plate; 85. Supporting card slot; 86. Side plate clamping block; 87. Inclined plane stop block; 88. Linking plate;

[0043] 101. Second spring. Specific embodiments

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] The following gives specific embodiments.

[0046] Please refer to Figure 1 - Figure 9 , the present invention provides an outer frame 1, a lower exhaust hood 2 and a coil main body 3 clamped between its frames. There are two groups of symmetrically distributed hanging plates 4 on the outer frame 1. Circular plate card slots 41 are opened at the bottom ends of both ends of the hanging plate 4. A lifting rod 7 is rotatably installed on the coil main body 3, and a semi-circular clamping plate 71 matching the circular plate card slot 41 is provided at the top end of the lifting rod 7;

[0047] The two ends of the coil main body 3 are symmetrically connected to a first joint 31 at the center, and a joint card slot 32 is opened inside the first joint 31;

[0048] Please refer to Figure 1 , Figure 4 and Figure 6 , the outer frame 1 is fixed inside the air-conditioning system shell. The lower exhaust hood 2 plays a role in guiding air for the opening below it. When the heat exchange efficiency of the coil main body 3 is reduced to the point where it cannot be improved by cleaning the external air hood, after the coil main body 3 is separately removed, the scale inside its pipes is cleaned. The first joint 31 serves as a structure for the water flow inside the coil main body 3 to be connected or contacted, and is docked with the water circulation structure inside the air-conditioning system through its pipeline;

[0049] Both ends of the coil main body 3 are provided with connecting pipe mechanisms 5. The connecting pipe mechanism 5 includes a sliding conduit 51 slidably installed in the pipe through-hole of the first joint 31. The outer wall of the sliding conduit 51 is fixedly connected with a sliding plate 52, and the sliding plate 52 is slidably installed between the inner walls of the joint slot 32;

[0050] Symmetrically installed outside the coil main body 3 are second joints 6 for its water supply and drainage, and the second joint 6 is slidably connected to the first joint 31;

[0051] Control mechanisms 8 are installed at both ends of the coil main body 3. The control mechanism 8 includes supporting side plates 84 clamped on both sides of the first joint 31. The bottom surface of the supporting side plate 84 is fixedly connected with a linkage plate 88, and one end of the linkage plate 88 is linked with the lifting rod 7.

[0052] Further, as Figure 5 、 Figure 6 、 Figure 7 and Figure 8 shown, a semi-circular baffle 42 is fixedly connected to the inner wall of the circular plate slot 41. One end of the lifting rod 7 is fixedly connected with a semi-circular clamping plate 71. The semi-circular clamping plate 71 is clamped inside the circular plate slot 41, and the bottom surface of the semi-circular clamping plate 71 contacts the top surface of the semi-circular baffle 42;

[0053] The hanging plate 4 is clamped and engaged with the lifting rod 7 through the contact between the semi-circular baffle 42 on the inner wall of the circular plate slot 41 and the bottom surface of the semi-circular clamping plate 71 fixed at one end of the lifting rod 7, realizing the mutual lifting between the hanging plate 4 and the lifting rod 7. The lifting rod 7 is clamped on the top of the coil main body 3 through the circular slot 35. At this time, the hanging plate 4 hoists and fixes the coil main body 3. When the coil main body 3 needs to be disassembled, the lifting rod 7 is rotated half a circle under the cooperation of the parts of the control mechanism 8, so that the semi-circular clamping plate 71 is separated from the semi-circular baffle 42. At this time, the hanging plate 4 loses the lifting effect on the whole of the coil main body 3 and the lifting rod 7, and the coil main body 3 can be separated from the outer frame 1 and the lower exhaust hood 2.

[0054] A first spring 53 is sleeved on the outer wall of the sliding conduit 51. The first spring 53 is fixedly connected with the side wall of the sliding plate 52 close to the second joint 6. The side wall of the sliding plate 52 far from the second joint 6 is symmetrically fixedly connected with contact rollers 54 through brackets, and the contact rollers 54 are linked with the control mechanism 8.

[0055] The sliding conduit 51, which is slidably installed between the inner walls of the joint slot 32 in cooperation with the skateboard 52, can have an elastic force towards the pipe connection of the second joint 6 under the elastic force provided by the first spring 53. And under the interference fit of the sliding conduit 51, the tightness of the joint after the pipe connection between the first joint 31 and the second joint 6 is ensured. When it is necessary to disassemble the coiled pipe main body 3, it is necessary to cooperate with the contact roller 54 and the control mechanism 8 to provide a contraction force for the first spring 53, and make the sliding conduit 51 completely hidden in the joint slot 32, so that the pipe connecting mechanism 5 will not cause structural obstacles during the disassembly process of the coiled pipe main body 3.

[0056] Further, as Figure 4 and Figure 8 shown, the adjacent side walls of the two supporting side plates 84 are both provided with supporting slots 85, and the supporting slots 85 are clamped with each other below the contact ends of the first joint 31 and the second joint 6. The side walls of the two supporting side plates 84 are both butted with control racks 82, and a central gear 81 is meshed and installed between the two control racks 82. The central gear 81 is fixedly connected to the center of the bottom surface of the first joint 31. The two control racks 82 are rotationally symmetric along the axis of the central gear 81. A rack lifting block 83 is slidably clamped between the inner walls of the side rails of the two control racks 82. The rack lifting block 83 is fixedly connected to the bottom surface of the first joint 31. The far ends of the two control racks 82 are both vertically fixedly connected with supporting side plates 84. A side plate clamping block 86 is fixedly connected to the end of the supporting side plate 84 close to the second joint 6. The bottom surface of the side plate clamping block 86 contacts the limit clamping block 62. A limit clamping seat 61 is fixedly connected to the outside of the second joint 6, and the limit clamping seat 61 is slidably butted with the first joint 31.

[0057] Under the linkage action of the central gear 81, the two control racks 82 can only perform synchronous reverse displacement movements. Among them, the rack lifting block 83 realizes the lifting function of the first joint 31 on the control rack 82 while not interfering with this movement, and further realizes the lifting function of the overall control mechanism 8. When the supporting side plate 84 at one end of the control rack 82 is clamped with the lower parts of the first joint 31 and the second joint 6 through the supporting slot 85, the side plate clamping block 86 is butted with the limit clamping block 62, causing an obstacle to the up and down displacement. At this time, the coiled pipe main body 3 as a whole cannot move down. When it is necessary to disassemble the coiled pipe main body 3, it is necessary to provide a force for the control racks 82 to move away from each other until the supporting slot 85, the side plate clamping block 86 are separated from the first joint 31, the second joint 6 and the limit clamping block 62, and then the coiled pipe main body 3 can move down as a whole. The upper limit of the coiled pipe main body 3 is limited by the mutual clamping of the upper limit clamping seat 61 on the second joint 6 and the outer wall above the first joint 31.

[0058] Further, as Figure 6 shown, an inclined surface stop block 87 is fixedly connected to the through hole bracket on the top surface of the side wall of the supporting side plate 84, and the inclined surface of the inclined surface stop block 87 contacts the outer wall of the contact roller 54.

[0059] When the side supporting side plates 84 on both sides are squeezed against each other to the extreme, the inclined surface of the inclined surface stopper 87 contacts the contact roller 54. At this time, the first spring 53 contracts, and the sliding conduit 51 is docked with the second joint 6. When disassembling the coil body 3, the side supporting side plates 84 on both sides move away from each other. At this time, the inclined surface stopper 87 loses the squeezing force on the contact roller 54, and the sliding conduit 51 and the sliding plate 52 move away from the second joint 6 under the elastic force of the first spring 53. At this time, the sliding conduit 51 is completely contracted and will not hinder the disassembly of the first joint 31 and the second joint 6.

[0060] Further, as Figure 4 and Figure 8 shown, the bottom surfaces of the far ends of the two control racks 82 are fixedly connected with linkage plates 88 through brackets. One ends of the two linkage plates 88 are respectively provided with sandwich circular plates 72. The centers of the top surfaces of the two sandwich circular plates 72 are fixedly connected with one ends of two lifting rods 7 through support rods. The axis of the lifting rod 7 coincides with the axis of the sandwich circular plate 72. Arc-shaped card slots 73 are symmetrically formed on the inner wall of the sandwich circular plate 72. One end of the arc-shaped card slot 73 coincides with the inner center of the sandwich circular plate 72, and the other end of the arc-shaped card slot 73 is close to the outer wall edge of the sandwich circular plate 72. The arc-shaped card slot 73 fits with the outer wall of the shaft rod at one end of the linkage plate 88. The centers of the bottom surfaces of the two sandwich circular plates 72 are installed with a positioning bracket 33 through a bearing. One end of the positioning bracket 33 is perpendicularly and fixedly connected with the end wall of the coil body 3.

[0061] The sandwich circular plate 72 forms an integral body under the cooperation of the lifting rod 7 and the positioning bracket 33 and can rotate synchronously. The sandwich circular plate 72 is slidably fitted with one end of the linkage plate 88 fixed on the control rack 82 through the arc-shaped card slot 73 thereon. When the whole lifting rod 7 is rotated until one end of the linkage plate 88 coincides with the end close to its center in the arc-shaped card slot 73, the two control racks 82 move away from each other. At this time, the coil body 3 can be disassembled. When the lifting rod 7 is rotated until one end of the linkage plate 88 coincides with the end close to its outer circumference in the arc-shaped card slot 73, the two control racks 82 move closer to each other. At this time, the control mechanism 8 resumes the limiting and supporting function between the first joint 31 and the second joint 6.

[0062] Further, as Figure 3 、 Figure 4 and Figure 5 shown, a plurality of handle brackets 34 are fixedly connected to the side wall of the coil body 3. Adjacent two handle brackets are symmetrically fixedly connected to both sides of the positioning bracket 33. An adjusting handle 9 is installed between the bottom surfaces of adjacent two sandwich circular plates 72 through a bracket. The two ends of the adjusting handle 9 are respectively fitted with the grooves at one end of two groups of same-side positioning brackets 33.

[0063] Pull the outer rotating adjustment handle 9 until its rotating shaft is clamped with the other handle bracket 34. During this process, the hoisting rod 7 and the control mechanism 8 rotate synchronously for half a turn, and the two side positioning brackets 33 can limit the position of this half-turn rotation.

[0064] Further, as Figure 9 shown, a baffle slot 63 is provided at the center of the side wall of the second joint 6. An L-shaped baffle 10 is clamped between the interiors of the baffle slot 63. The inner wall of the side wall through hole of the L-shaped baffle 10 coincides with the inner wall of the pipe connection of the second interface. One end of the L-shaped baffle 10 is fixedly connected with a second spring 101, and one end of the second spring 101 is fixedly connected with the top surface of the baffle slot 63.

[0065] During the process that the coil main body 3 and the first joint 31 slide down as a whole until they are separated from the second joint 6, the L-shaped baffle 10 in the baffle slot 63 loses the upward extrusion force. Under the cooperation of the elastic force provided by the second spring 101, the side plate of the L-shaped baffle 10 can block the pipe orifice of the second joint 6, preventing the liquid in the air-conditioning system from leaking when the coil main body 3 is externally cleaned with water.

[0066] Working principle: When the coil main body 3 needs to be disassembled, first remove the lower exhaust hood 2 from below the outer frame 1. At this time, the coil main body 3 and the control mechanism 8 are completely exposed. Then, fill the support under the coil main body 3 to stably support the coil main body 3 during the disassembly process, and reduce the frictional resistance during the overall rotation of the hoisting rod 7 by reducing the frictional force between the semi-circular baffle 42 and the semi-circular clamping plate 71. Then, pull out and rotate the adjustment handle 9 half a turn, so that the rotating shafts at both ends are engaged with the end face grooves of the other handle brackets 34. At this time, the hoisting rod 7 has rotated half a turn as a whole, and there is no longer a structural obstruction between the semi-circular clamping plate 71 and the semi-circular baffle 42. At this time, the hoisting rod 7 can be completely disengaged from the circular plate slot 41, and the hanging plate 4 loses the hoisting effect on the coil main body 3. At this time, remove the filler under the coil main body 3, and the coil main body 3 can gradually move down until it is completely separated from the outer frame 1. During the process of rotating the adjustment handle 9, the sandwich circular plate 72 rotates half a turn synchronously. One end of the linkage plate 88 moves from the arc-shaped slot 73 near the outer circumference of the sandwich circular plate 72 to near its center, so that the two linkage plates 88 and the control rack 82 and the supporting side plate 84 linked to them move outwards synchronously. The supporting side plate 84 is engaged and supported with the first joint 31, the second joint 6 and the limit block 62 through the supporting slot 85 and the side plate block 86, so that the control mechanism 8 as a whole loses the function of clamping and limiting between the first joint 31 and the second joint 6. During this process, the inclined surface block 87 also gradually loses the extrusion force on the contact roller 54. As a result, the sliding conduit 51 and the sliding plate 52 move away from the position where the second joint 6 is located under the elastic force of the first spring 53, and move until the sliding conduit 51 is completely hidden in the pipe through hole inner wall of the joint slot 32. This ensures that the sliding conduit 51 used for docking when removing the filler under the coil main body 3 will not hinder the overall downward movement of the coil main body 3. During the overall downward movement of the coil main body 3, the L-shaped baffle 10 in the baffle slot 63 loses the upward extrusion force. With the elastic force provided by the second spring 101, the side plate of the L-shaped baffle 10 can block the pipe orifice of the second joint 6, and after it is separated from the lower exhaust hood 2, connect it to the high-flow water pipe outside to clean the scale in its pipe. After the scale in the pipe of the coil main body 3 is cleaned, push the coil main body 3 upwards as a whole from below. After the outer wall above the first joint 31 is docked with the limit seat 61, operate the above steps in reverse. While the hanging plate 4 resumes the hoisting effect on the coil main body 3, the pipe connecting mechanism 5 can also ensure the stable docking of the pipes between the first joint 31 and the second joint 6.

[0067] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A fan coil unit that is easy to maintain, comprising an outer frame (1), a lower exhaust hood (2) and a coil unit body (3) clamped between the frames, wherein the outer frame (1) is provided with two sets of symmetrically distributed hanging plates (4), characterized in that: The bottom surfaces of both ends of the hanging plate (4) are provided with circular plate slots (41); a hanging rod (7) is rotatably mounted on the coil body (3); and a semicircular clip (71) matching the circular plate slots (41) is provided at the top of the hanging rod (7); The two ends of the coil body (3) are centrally symmetrically connected with first joints (31), and a joint slot (32) is provided inside the first joint (31); Both ends of the coil body (3) are provided with a pipe connecting mechanism (5), the pipe connecting mechanism (5) comprising a sliding guide tube (51) slidably mounted in a pipe through hole of the first joint (31), a slide plate (52) being fixedly connected to an outer wall of the sliding guide tube (51), and the slide plate (52) being slidably mounted between the inner walls of the joint slot (32); A second joint (6) for water supply and drainage is symmetrically mounted outside the coil body (3), and the second joint (6) is slidably connected to the first joint (31); Control mechanisms (8) are installed at both ends of the coil body (3), and the control mechanism (8) includes supporting side plates (84) clamped on both sides of the first joint (31), and the bottom surface of the supporting side plate (84) is fixedly connected to a linkage plate (88), and one end of the linkage plate (88) is linked to the hanging rod (7).

2. The fan coil unit that is easy to maintain according to claim 1 is characterized in that: A semicircular baffle (42) is fixedly connected to the inner wall of the circular plate slot (41), and a semicircular clamping plate (71) is fixedly connected to one end of the hanging rod (7). The semicircular clamping plate (71) is clamped inside the circular plate slot (41), and the bottom surface of the semicircular clamping plate (71) contacts the top surface of the semicircular baffle (42); The outer wall of the sliding guide tube (51) is sleeved with a first spring (53), the first spring (53) being fixedly connected to the side wall of the sliding plate (52) close to the second joint (6), and the side wall of the sliding plate (52) away from the second joint (6) being symmetrically fixedly connected to a contact roller (54) via a bracket, the contact roller (54) being linked to the control mechanism (8).

3. The fan coil unit that is easy to maintain according to claim 2 is characterized in that: Adjacent side walls of the two supporting side plates (84) are provided with supporting slots (85), the supporting slots (85) are mutually clamped with each other below the contact ends of the first joint (31) and the second joint (6), the side walls of the two supporting side plates (84) are butted with control racks (82), a central gear (81) is meshedly installed between the two control racks (82), the central gear (81) is fixedly connected to the center of the bottom surface of the first joint (31), the two control racks (82) are rotationally symmetrical along the axis of the central gear (81), and the side rails of the two control racks (82) are A rack hanging block (83) is slidably mounted between the inner walls, the rack hanging block (83) is fixedly connected to the bottom surface of the first joint (31), the ends away from the two control racks (82) are vertically fixedly connected to supporting side plates (84), the end of the supporting side plate (84) close to the second joint (6) is fixedly connected to a side plate clamping block (86), the bottom surface of the side plate clamping block (86) is in contact with a limit clamping block (62) fixedly connected to the side wall of the second joint (6), the outside of the second joint (6) is fixedly connected to a limit clamping seat (61), and the limit clamping seat (61) is slidably docked with the first joint (31).

4. The fan coil unit that is easy to maintain according to claim 3 is characterized in that: A through-hole bracket on the top surface of the side wall of the supporting side plate (84) is fixedly connected with an inclined surface stopper (87), and the inclined surface of the inclined surface stopper (87) contacts the outer wall of the contact roller (54).

5. The fan coil unit that is easy to maintain according to claim 4 is characterized in that: A sandwich circular plate (72) is provided at one end of each of the two linkage plates (88); the centers of the top surfaces of the two sandwich circular plates (72) are fixedly connected to one end of two hanging rods (7) via support rods, respectively; and the axis of the hanging rod (7) coincides with the axis of the sandwich circular plate (72).

6. The fan coil unit that is easy to maintain according to claim 5, characterized in that: The inner wall of the sandwich circular plate (72) is symmetrically provided with arc-shaped slots (73), one end of the arc-shaped slot (73) coincides with the inner center of the sandwich circular plate (72), the other end of the arc-shaped slot (73) is close to the outer wall edge of the sandwich circular plate (72), and the arc-shaped slot (73) fits with the outer wall of the shaft rod at one end of the linkage plate (88).

7. The fan coil unit that is easy to maintain according to claim 6 is characterized in that: A positioning bracket (33) is installed at the center of the bottom surface of the two x sandwich circular plates (72) via a bearing, and one end of the positioning bracket (33) is vertically fixed to the end wall of the coil body (3).

8. The fan coil unit that is easy to maintain according to claim 7, characterized in that: A plurality of handle frames (34) are fixedly connected to the side wall of the coil body (3), and two adjacent handle frames are symmetrically fixedly connected to the two sides of the positioning bracket (33).

9. The fan coil unit that is easy to maintain according to claim 8, characterized in that: An adjustment handle (9) is installed between the bottom surfaces of two adjacent sandwich circular plates (72) via a bracket, and two ends of the adjustment handle (9) are respectively fitted with grooves at one end of two sets of positioning brackets (33) on the same side.

10. The fan coil unit that is easy to maintain according to claim 1, characterized in that: A baffle plate slot (63) is provided at the centre of the side wall of the second joint (6), an L-shaped baffle plate (10) is clamped inside the baffle plate slot (63), the inner wall of the side wall through hole of the L-shaped baffle plate (10) coincides with the inner wall of the pipe through hole of the second interface, a second spring (101) is fixedly connected to one end of the L-shaped baffle plate (10), and one end of the second spring (101) is fixedly connected to the top surface of the baffle plate slot (63).

Images