Coil pipe type heat exchanger capable of automatically adjusting speed

Abstract

The utility model discloses a coil pipe type heat exchanger capable of automatically adjusting the speed, and relates to the technical field of fluid conveying and heat exchange. The coil pipe type heat exchanger comprises a heat exchanger body and an adjusting mechanism, the adjusting mechanism comprises a connecting pipe, an impeller, a lead screw, a balancing weight, a transmission assembly and a valve plate, the connecting pipe is provided with an opening and an in-pipe space communicated with the opening, and when the medium flow is normal, the balancing weight is located at the lower position, and the valve plate is located at the first position; and when the medium flow is increased, the impeller rotates quickly to drive the lead screw to rotate quickly, and the balancing weight rises to the upper position and pulls the transmission assembly to drive the valve plate to be located at the second position. And the angle of the valve plate is automatically adjusted by monitoring the flow, so that the retention time of a medium in the coil pipe is ensured, and the heat is fully transferred.

Description

Technical Field

[0001] This utility model relates to the technical field of fluid transport and heat exchange, and in particular to a coil heat exchanger with an automatically adjustable rate. Background Technology

[0002] The inlet flow rate of existing coil heat exchangers cannot be flexibly adjusted according to actual operating conditions. When the inlet flow rate is too fast, the residence time of the hot and cold media in the coil is shortened, the heat transfer is insufficient, resulting in poor heat exchange effect and failing to meet the precise requirements for heat exchange effect. Utility Model Content

[0003] In view of this, the present invention provides a coil heat exchanger with an automatically adjustable rate to solve the technical problem that existing coil heat exchangers cannot flexibly adjust according to the actual inlet flow rate.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] This utility model employs an automatically adjustable coil-type heat exchanger, comprising a heat exchanger body and an adjusting mechanism. The adjusting mechanism includes a connecting pipe, an impeller, a lead screw, a counterweight, a transmission assembly, and a valve plate. The connecting pipe has an opening and an internal space communicating with the opening. The impeller is placed within the internal space, and one end of the impeller is fixedly connected to the lead screw. The other end of the lead screw is fixedly connected to the wall of the connecting pipe. The inner wall of the counterweight is threaded, and the counterweight meshes with the lead screw. One end of the transmission assembly is rotatably connected to the counterweight. The other end of the transmission assembly is rotatably connected to the valve plate. When the medium flow rate is normal, the impeller rotates, driving the lead screw to rotate. The force exerted by the lead screw on the counterweight is equal to the weight of the counterweight itself. The counterweight is dynamically balanced and is in the lower position. The counterweight pulls the transmission assembly, causing the valve plate to be in the first position. When the medium flow rate increases, the impeller rotates faster, driving the lead screw to rotate faster. The counterweight rises to the upper position, and the counterweight pulls the transmission assembly, causing the valve plate to be in the second position.

[0006] In one embodiment, the transmission assembly includes a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod are rotatably connected via the mounting shaft, the other end of the first connecting rod is rotatably connected to the counterweight via the mounting shaft, and the other end of the second connecting rod is rotatably connected to the valve plate via the mounting shaft.

[0007] In one embodiment, the sidewall of the connecting pipe is provided with a mounting groove, and the impeller is disposed in the mounting groove.

[0008] In one embodiment, the impeller is positioned below the counterweight.

[0009] In one embodiment, the coil heat exchanger further includes an impeller shroud, which is disposed above the impeller and fixedly connected to the inner wall of the connecting pipe, the width of which is half the diameter of the impeller.

[0010] In one embodiment, the coil heat exchanger further includes a mounting rod, the two ends of which are fixedly connected to the inner walls of the two sides of the connecting pipe, the first connecting rod being rotatably connected to the mounting rod, the first connecting rod having a connecting hole, and the mounting rod passing through the connecting hole so that the counterweight drives the first connecting rod to move along a fixed axis.

[0011] Implementing the embodiments of this utility model will have at least the following beneficial effects:

[0012] This invention employs an automatically adjustable-rate coil-type heat exchanger. When the medium flow rate is normal, the impeller rotates, driving the lead screw to rotate. The force exerted by the lead screw on the counterweight is equal to the counterweight's own weight, resulting in dynamic balance. The counterweight is in the lower position, and it pulls the transmission assembly, causing the valve plate to move to the first position. When the medium flow rate increases, the impeller rotates faster, driving the lead screw to rotate faster, causing the counterweight to rise to the upper position. The counterweight then pulls the transmission assembly, causing the valve plate to move to the second position. Automatic adjustment of the valve plate angle is achieved by monitoring the flow rate, ensuring the medium's residence time within the coil and maximizing heat transfer. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view of a coil heat exchanger with an automatically adjustable rate in one embodiment;

[0015] Figure 2 This is an overall side view with the counterweight in the lower position and the valve plate in the first position.

[0016] Figure 3 for Figure 2 A cross-sectional view along direction AA as shown;

[0017] Figure 4 for Figure 3 A partial schematic diagram of part B shown;

[0018] Figure 5 Overall side view with the counterweight in the top position and the valve plate in the second position;

[0019] Figure 6 for Figure 5 A cross-sectional view along the CC direction as shown;

[0020] Figure 7 for Figure 6 A partial schematic diagram of part D shown;

[0021] Figure 8 A side view of the cleaning mechanism in one embodiment;

[0022] Figure 9 for Figure 8 The cross-sectional view along the EE direction is shown.

[0023] Among them: 1. Heat exchanger body;

[0024] 2. Adjustment mechanism;

[0025] 21. Connecting pipe; 211. Opening; 212. Internal space of the pipe; 213. Mounting groove

[0026] 22. Impeller; 23. Lead screw;

[0027] 24. Counterweight; 241. Thread

[0028] 25. Transmission assembly; 251. First connecting rod; 252. Second connecting rod; 253. Mounting rod; 254. Connecting hole;

[0029] 26. Valve plate; 27. Impeller cover. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] It should be noted that the various connection methods involved in this invention can be arbitrary unless otherwise specified. For example, fixed connections can be achieved by bolts and nuts for detachable fixing, welding, or integral molding, etc. Sliding connections can be achieved by grooves or guide rails of various shapes, and rotating connections can be achieved by hinges, shafts, etc. Any existing method that can achieve the corresponding connection relationship is acceptable.

[0034] The following is combined Figures 1-9 The following description further explains the coil-type heat exchanger with an automatically adjustable rate that relates to this utility model.

[0035] In this embodiment, as Figures 1-9 As shown, an automatically adjustable coil heat exchanger includes a heat exchanger body 1 and an adjusting mechanism 2. The adjusting mechanism 2 includes a connecting pipe 21, an impeller 22, a lead screw 23, a counterweight 24, a transmission assembly 25, and a valve plate 26. The connecting pipe 21 has an opening 211 and an inner space 212 communicating with the opening 211. The impeller 22 is placed in the inner space 212. The impeller 22 is fixedly connected to one end of the lead screw 23, and the other end of the lead screw 23 is fixedly connected to the wall of the connecting pipe 21. The inner wall of the counterweight 24 is provided with a thread 241, and the counterweight 24 meshes with the lead screw 23. One end of the transmission assembly 25 is rotatably connected to the counterweight 24, and the other end of the transmission assembly 25 is rotatably connected to the valve plate 26. When the medium flow rate is normal, the impeller 22 rotates, driving the lead screw 23 to rotate. The force exerted by the lead screw 23 on the counterweight 24 is equal to the weight of the counterweight 24 itself. The counterweight 24 is dynamically balanced and is in the lower position. The counterweight 24 pulls the transmission assembly 25, causing the valve plate 26 to be in the first position. When the medium flow rate increases, the impeller 22 rotates faster, driving the lead screw 23 to rotate faster. The counterweight 24 rises to the upper position, and the counterweight 24 pulls the transmission assembly 25, causing the valve plate 26 to be in the second position.

[0036] It should be noted that the helix angle of the lead screw thread is larger than that of common threads, and is not a common angle.

[0037] In this embodiment, when the medium flow rate is normal, the impeller 22 rotates, driving the lead screw 23 to rotate. The force exerted by the lead screw 23 on the counterweight 24 is equal to the weight of the counterweight 24 itself, resulting in dynamic balance of the counterweight 24. The counterweight 24 is in the lower position, and it pulls the transmission assembly 25 to move the valve plate 26 to the first position. When the medium flow rate increases, the impeller 22 rotates faster, driving the lead screw 23 to rotate faster, causing the counterweight 24 to rise to the upper position. The counterweight 24 then pulls the transmission assembly 25 to move the valve plate 26 to the second position. By monitoring the flow rate, the angle of the valve plate 26 is automatically adjusted to ensure the residence time of the medium in the coil, thus maximizing heat transfer.

[0038] In one embodiment, such as Figure 4 As shown, the transmission assembly 25 includes a first connecting rod 251 and a second connecting rod 252. One end of the first connecting rod 251 and one end of the second connecting rod 252 are rotatably connected via the mounting shaft. The other end of the first connecting rod 251 is rotatably connected to the counterweight 24 via the mounting shaft. The other end of the second connecting rod 252 is rotatably connected to the valve plate 26 via the mounting shaft. This allows the counterweight 24 to drive the transmission assembly 25 to move, thereby causing the valve plate 26 to rotate.

[0039] In one embodiment, such as Figure 6 As shown, the side wall of the connecting pipe 21 is provided with a mounting groove 213, and the impeller 22 is disposed in the mounting groove 213. The mounting groove 213 increases the internal accommodating space of the connecting pipe 21 while keeping the medium flow area unchanged.

[0040] In this embodiment, the impeller 22 is positioned below the counterweight 24. When the medium flow rate is normal, the weight of the counterweight 24 and the force exerted on the counterweight 24 by the lead screw 23 maintain a dynamic balance, causing the valve plate 26 to be in the first position. When the medium flow rate increases, the counterweight 24 moves upward under the action of the lead screw 23, causing the valve plate 26 to be in the second position, thus realizing automatic adjustment of the valve plate 26 under different flow rates.

[0041] In one embodiment, such as Figure 9 As shown, the coil-type heat exchanger also includes an impeller shroud 27, which is disposed above the impeller 22 and fixedly connected to the inner wall of the connecting pipe 21. The width of the impeller shroud 27 is half the diameter of the impeller 22. This reduces the direct impact of the medium on the impeller 22 and also allows for monitoring changes in the medium flow rate.

[0042] In this embodiment, the coil-type heat exchanger further includes a mounting rod 253, with both ends of the mounting rod 253 fixedly connected to the inner walls of both sides of the connecting pipe 21. The first connecting rod 251 is rotatably connected to the mounting rod 253, and the first connecting rod 251 has a connecting hole 254 through which the mounting rod 253 passes, allowing the counterweight 24 to drive the first connecting rod 251 to rotate along a fixed axis. This allows the counterweight 24 to move upwards or downwards, leveraging the fixed axis to close or open the valve plate 26.

[0043] It should be noted that the valve plate 26 is not completely closed, and the first link 251 and the second link 252 are not on the same straight line.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A coil-type heat exchanger with automatically adjustable rate, characterized in that, The coil-type heat exchanger includes a heat exchanger body and an adjustment mechanism. The adjustment mechanism includes a connecting pipe, an impeller, a lead screw, a counterweight, a transmission assembly, and a valve plate. The connecting pipe has an opening and an internal space communicating with the opening. The valve plate is rotatably connected to the inner wall of the connecting pipe to adjust the flow rate of the connecting pipe. The impeller is placed in the internal space of the pipe. One end of the lead screw is coaxially and fixedly connected to the impeller, and the other end is fixedly connected to the wall of the connecting pipe. The lead screw extends radially along the connecting pipe. The inner wall of the counterweight is provided with a thread that can mesh with the lead screw. One end of the transmission assembly is rotatably connected to the counterweight, and the other end of the transmission assembly is rotatably connected to the valve plate, so that the transmission assembly drives the valve plate from a first position to a second position. When the medium flow rate is normal, the counterweight is in the lower position and the valve plate is in the first position; when the medium flow rate increases, the impeller rotates faster, which drives the lead screw to rotate faster, the counterweight rises to the upper position, and the counterweight pulls the transmission assembly to drive the valve plate to the second position.

2. The coil-type heat exchanger according to claim 1, characterized in that, The transmission assembly includes a first connecting rod and a second connecting rod. One end of the first connecting rod is rotatably connected to the end of the second connecting rod via a mounting shaft. The other end of the first connecting rod is rotatably connected to the counterweight via a mounting shaft. The end of the second connecting rod away from the first connecting rod is rotatably connected to the valve plate via a mounting shaft.

3. The coil-type heat exchanger according to claim 1, characterized in that, The connecting pipe has a mounting groove on its side wall, and the impeller is disposed in the mounting groove.

4. The coil-type heat exchanger according to claim 1, characterized in that, The impeller is positioned below the counterweight.

5. The coil-type heat exchanger according to claim 1, characterized in that, The coil heat exchanger also includes an impeller cover, which is disposed above the impeller and fixedly connected to the inner wall of the connecting pipe. The impeller cover is semi-circular.

6. The coil-type heat exchanger according to claim 2, characterized in that, The coil-type heat exchanger also includes a mounting rod, the two ends of which are fixedly connected to the inner walls of the two sides of the connecting pipe. The first connecting rod is rotatably connected to the mounting rod, and the first connecting rod is provided with a connecting hole. The mounting rod passes through the connecting hole so that the counterweight drives the first connecting rod to rotate along a fixed axis.

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