A high-efficiency and easy-to-clean sewage source heat pump and its heat exchanger

Abstract

The present invention relates to the field of sewage heat exchange technology, and in particular to a high-efficiency and easy-to-clean sewage source heat pump and a heat exchanger thereof. A heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump comprises a shell, two positioning assemblies and a plurality of heat exchange tubes. The heat exchange tubes are installed in the shell. The positioning assembly comprises a positioning plate and a mounting plate. The mounting plate is provided with a mounting groove with a vortex structure. The end of the heat exchange tube is slidably installed in the mounting groove. The positioning plate is provided with a plurality of limiting tubes. The limiting tubes are arranged in a one-to-one correspondence with the heat exchange tubes. The limiting tubes pass through the mounting groove along a first direction and extend into the heat exchange tubes arranged correspondingly thereto. The heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump of the present invention cooperates by providing a shell, two positioning assemblies and a plurality of heat exchange tubes. When it is necessary to clean the outer surface of the heat exchange tube, it is only necessary to disassemble the positioning plate so that the heat exchange tube is in a semi-disassembled state on the mounting plate, thereby improving the convenience of installation and disassembly of the heat exchange tube.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage heat exchange, and in particular to a high-efficiency and easy-to-clean sewage source heat pump and a heat exchanger thereof. Background Art

[0002] The sewage source heat pump system uses sewage (domestic wastewater, industrial wastewater, mine water, river and lake water, industrial equipment cooling water, and wastewater discharged from production processes) to exchange heat with intermediate water through a sewage heat exchanger. The intermediate water enters the heat pump host. The host consumes a small amount of electricity and "extracts" low-quality energy from water resources in winter, supplying it to the indoor heating system and domestic hot water system through the pipeline network; in summer, it takes away the indoor heat and releases it into the sewage to cool the room and produce domestic hot water.

[0003] The heat exchangers used in sewage-source heat pump units are mostly shell-and-tube heat exchangers. However, since the heat source is sewage, although it is filtered before heat exchange, it still contains small particles of impurities and oil, which can cause scaling on the outer surface of the heat exchange tubes during the long heat exchange process. Existing cleaning methods mostly require disassembling the heat exchanger for cleaning, but the multiple heat exchange tubes are blocked by each other and difficult to move, making it difficult to fully clean the impurities attached to the heat exchange tubes, resulting in poor cleaning results and seriously affecting heat exchange efficiency. Summary of the Invention

[0004] The present invention provides an efficient and easy-to-clean sewage source heat pump and a heat exchanger thereof, so as to solve the problem that when cleaning the heat exchanger used in the existing sewage source heat pump unit, both ends of the heat exchange tubes are fixed, multiple heat exchange tubes block each other, and the cleaning effect is poor.

[0005] The heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump of the present invention adopts the following technical solution: a heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump comprises a shell, two positioning assemblies and a plurality of heat exchange tubes; the shell is arranged in a horizontal direction, and the axial direction of the shell is referred to as a first direction; the heat exchange tubes are arranged in the shell along the first direction, and the two ends of the heat exchange tubes are connected; the two positioning assemblies are respectively located at the two ends of the shell in the first direction and are detachably connected to the shell; the positioning assembly comprises a positioning plate and a mounting plate, which are sequentially arranged in the shell along the first direction and are both coaxial with the shell, and the positioning plate is located on the mounting plate in the first direction. A side that is upward and away from the heat exchange tube and is detachably connected to the mounting plate; a mounting groove with a vortex structure is provided on the mounting plate, and the plane where the vortex line of the mounting groove is located is a vertical plane, and the end of the heat exchange tube is slidably installed in the mounting groove, and multiple heat exchange tubes are arranged in sequence along the extension direction of the vortex line of the mounting groove; multiple limiting tubes are provided on the positioning plate, and the multiple limiting tubes are all arranged along the first direction and penetrate the positioning plate in the first direction; the limiting tube is located on the side of the positioning plate close to the mounting plate in the first direction, and the limiting tube and the heat exchange tube are arranged one by one, and the limiting tube passes through the mounting groove along the first direction and extends into the heat exchange tube corresponding to it.

[0006] Furthermore, the distribution length of the plurality of heat exchange tubes sequentially arranged along the extension direction of the spiral line of the installation groove is shorter than the length of the spiral line of the installation groove.

[0007] Furthermore, a water inlet and a water outlet are provided on the shell; the shell is detachably connected to a front pipe box and a rear pipe box at both ends along the first direction, and a first chamber and a second chamber independent of each other are provided in the front pipe box, and in the vertical direction, the first chamber is located on the upper side of the second chamber; a liquid inlet is provided on the first chamber, and a liquid outlet is provided on the second chamber.

[0008] Furthermore, a partition is provided in the front pipe box, and the first chamber and the second chamber are separated by the partition.

[0009] Furthermore, a plurality of through slots are provided on the mounting plate, and the through slots are arranged in one-to-one correspondence with the heat exchange tubes, and each through slot is connected to the corresponding heat exchange tube; the limiting tube includes a first tube section and a second tube section, and the positioning plate, the first tube section and the second tube section are fixedly connected in sequence in the first direction and are connected to each other, the first tube section is located on the side of the second tube section away from the heat exchange tube in the first direction, and the diameter of the first tube section is larger than the diameter of the second tube section; the first tube section is inserted into the through slot, and the second tube section is inserted into the heat exchange tube after passing through the mounting slot.

[0010] Furthermore, the mounting groove includes a first groove section and a second groove section, which are arranged sequentially in the first direction and are connected to each other; the first groove section is located on the side of the second groove section close to the positioning plate in the first direction; the heat exchange tube includes a tube body and two protrusions, the tube body and the two protrusions are both tubular structures, and the two protrusions are respectively fixedly installed at both ends of the tube body along the first direction, the protrusion is slidably installed in the first groove section, and the tube body is slidably installed in the second groove section.

[0011] Furthermore, the mounting groove has a first end and a second end, the first end spirally extends outward around the axis of the mounting groove in the first direction to the second end, and the first end is located on the side of the second end close to the vortex center of the mounting groove; a connecting groove is provided on the mounting disk, the connecting groove is arranged along the radial direction of the mounting disk, and the connecting groove is connected to the second end of the mounting groove; a sealing block is detachably installed on the connecting groove of the mounting disk.

[0012] Furthermore, a flow guide is provided in the shell, which is located between two mounting disks, and the flow guide includes multiple guide plates and multiple guide rods; the multiple guide plates are arranged in sequence along the first direction in the shell and are coaxial with the shell, and the guide plates are provided with guide grooves that pass through along the first direction, and the guide grooves have the same shape as the mounting grooves; the heat exchange tubes pass through the guide grooves on the multiple guide plates in sequence along the first direction; the multiple guide rods are all arranged along the first direction, one end of the guide rod is installed on one of the mounting disks, and the other end of the guide rod passes through the multiple guide plates in sequence along the first direction and is connected to the other mounting disk, and the guide rod is located at the second end of the mounting groove on the side away from the first end of the mounting groove in the radial direction of the mounting disk.

[0013] Furthermore, the guide member also includes a guide rod; the guide rod is arranged along the first direction and is coaxial with the shell, one end of the guide rod is installed on one of the mounting plates, and the other end of the guide rod passes through multiple guide plates in sequence along the first direction and is connected to another mounting plate; the multiple guide plates are evenly divided into multiple first plates and multiple second plates arranged in sequence along the first direction, and the first plates and the second plates are alternately distributed in sequence in the first direction; the water inlet and the water outlet are arranged in sequence in the first direction, and are respectively located on both sides of the multiple guide plates in the first direction, and a plurality of first blocks are provided on the guide rod, the first blocks are arranged in one-to-one correspondence with the first plates, and the first blocks are located on the side of the first plate away from the water inlet in the first direction; a plurality of second blocks are provided on the guide rod, the second blocks are arranged in one-to-one correspondence with the second plates, and the second blocks are located on the side of the second plate away from the water inlet in the first direction.

[0014] The present invention also provides a high-efficiency and easy-to-clean sewage source heat pump, comprising the above-mentioned heat exchanger of the high-efficiency and easy-to-clean sewage source heat pump.

[0015] The beneficial effects of the present invention are as follows: a heat exchanger of an efficient and easy-to-clean sewage source heat pump of the present invention is coordinated by providing a shell, two positioning assemblies and a plurality of heat exchange tubes. When the outer surface of the heat exchange tube needs to be cleaned, the positioning plate and the shell are first unlocked, and then the positioning plate and the mounting plate are unlocked. The unlocked heat exchange tube can slide arbitrarily in the mounting groove along the extension direction of its spiral line, so that the multiple heat exchange tubes no longer block each other, which is convenient for operators to clean. Moreover, it is only necessary to remove the positioning plate so that the heat exchange tube is in a semi-disassembled state on the mounting plate, which greatly improves the convenience of installing and disassembling the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a heat exchanger for a high-efficiency and easy-to-clean sewage source heat pump according to the present invention;

[0018] Figure 2 A side view of the overall structure of an embodiment of a heat exchanger for a high-efficiency and easy-to-clean sewage source heat pump according to the present invention;

[0019] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0020] Figure 4 A schematic diagram of a partial structure of an embodiment of a heat exchanger for a high-efficiency and easy-to-clean sewage-source heat pump according to the present invention;

[0021] Figure 5 This is a partial structural exploded view of an embodiment of a heat exchanger for a high-efficiency and easy-to-clean sewage-source heat pump according to the present invention;

[0022] Figure 6 This is a diagram showing a state in which heat exchange tubes of an embodiment of a heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump according to the present invention are installed on a mounting plate;

[0023] Figure 7 A schematic diagram of a mounting plate of an embodiment of a heat exchanger for a high-efficiency and easy-to-clean sewage source heat pump according to the present invention;

[0024] Figure 8 for Figure 7 Cross-sectional view at the middle BB;

[0025] Figure 9This is a schematic diagram of a positioning plate of an embodiment of a heat exchanger for a high-efficiency and easy-to-clean sewage source heat pump according to the present invention.

[0026] In the figure: 100, housing; 101, water inlet; 102, water outlet; 110, front pipe box; 111, partition; 112, first chamber; 113, second chamber; 114, liquid inlet; 115, liquid outlet; 120, rear pipe box; 200, positioning assembly; 210, positioning plate; 211, limiting pipe; 212, first pipe section; 213, second pipe section; 220, mounting plate; 221, mounting plate Grooving; 222, through groove; 223, first groove section; 224, second groove section; 225, connecting groove; 226, blocking block; 300, heat exchange tube; 310, tube body; 320, protrusion; 400, guide member; 410, guide plate; 411, guide groove; 412, first plate; 413, second plate; 420, guide rod; 421, first stopper; 430, guide rod; 431, second stopper. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] An embodiment of a heat exchanger for a high-efficiency and easy-to-clean sewage source heat pump according to the present invention is as follows: Figures 1 to 9 shown.

[0029] A heat exchanger for a high-efficiency, easy-to-clean sewage-source heat pump includes a housing 100, two positioning assemblies 200, and multiple heat exchange tubes 300. The housing 100 is arranged horizontally, with the axial direction of the housing 100 referred to as the first direction. The heat exchange tubes 300 are arranged within the housing 100 along the first direction, with both ends of the heat exchange tubes 300 connected. The two positioning assemblies 200 are located at either end of the housing 100 in the first direction and are detachably connected to the housing 100.

[0030] The positioning assembly 200 includes a positioning disk 210 and a mounting disk 220. The positioning disk 210 and the mounting disk 220 are arranged in sequence along the first direction in the housing 100 and are both coaxial with the housing 100. The positioning disk 210 is located on the side of the mounting disk 220 away from the heat exchange tube 300 in the first direction. A mounting groove 221 with a vortex structure is provided on the mounting disk 220, and the plane where the vortex line of the mounting groove 221 is located is a vertical plane. The end of the heat exchange tube 300 is slidably installed in the mounting groove 221. Multiple heat exchange tubes 300 are arranged in sequence along the extension direction of the vortex line of the mounting groove 221, and the multiple heat exchange tubes 300 abut against each other, thereby making the multiple heat exchange tubes 300 spiral. The positioning disk 210 is detachably connected to the mounting disk 220, and multiple limiting tubes 211 are provided on the positioning disk 210. The multiple limiting tubes 211 are all arranged along the first direction and pass through the positioning disk 210 in the first direction. The limiting tube 211 is located on one side of the positioning plate 210 close to the mounting plate 220 in the first direction. The limiting tube 211 is arranged in a one-to-one correspondence with the heat exchange tube 300. The limiting tube 211 passes through the mounting groove 221 along the first direction and extends into the heat exchange tube 300 arranged correspondingly thereto.

[0031] Specifically, the positioning plate 210 is mounted on the housing 100 via a flange. The positioning plate 210 and the mounting plate 220 are connected via bolts.

[0032] Furthermore, the distribution length of the plurality of heat exchange tubes 300 sequentially arranged along the extension direction of the spiral line of the installation groove 221 is shorter than the spiral line length of the installation groove 221. That is, the heat exchange tubes 300 do not fill the installation groove 221, leaving room for the heat exchange tubes 300 to slide in the installation groove 221.

[0033] In this embodiment, a shell 100, two positioning assemblies 200 and a plurality of heat exchange tubes 300 are provided. When installing the heat exchange tubes 300, the plurality of heat exchange tubes 300 are arranged in sequence along the extension direction of the spiral line of the installation groove 221. Then, the limiting tube 211 on the positioning plate 210 is aligned with the heat exchange tube 300 correspondingly provided therewith, so that the limiting tube 211 is connected with the interior of the heat exchange tube 300. Then, the positioning plate 210 and the installation plate 220 are temporarily fixed by bolts to complete the installation of the heat exchange tube 300. The installed heat exchange tube 300 will be restricted by the limiting tube 211 and cannot slide along the extension direction of its spiral line in the installation groove 221. Then, the positioning plate 210 is installed in the shell 100 by bolts. After the installation is completed, the heat exchange operation can be carried out.

[0034] When the outer surface of the heat exchange tube 300 needs to be cleaned, the positioning plate 210 and the mounting plate 220 are used together. The positioning plate 210 and the shell 100 are first unlocked, and then the positioning plate 210 and the mounting plate 220 are unlocked. After unlocking, the heat exchange tube 300 can slide arbitrarily in the mounting groove 221 along the extension direction of its spiral line, so that multiple heat exchange tubes 300 no longer block each other, which is convenient for operators to clean. Moreover, it is only necessary to remove the positioning plate 210 so that the heat exchange tube 300 is in a semi-disassembled state on the mounting plate 220, which greatly improves the convenience of installation and disassembly of the heat exchange tube 300.

[0035] In a further embodiment, a water inlet 101 and a water outlet 102 are provided on the shell 100, and sewage can be fed into the shell 100 through the water inlet 101 and flow out through the water outlet 102. The shell 100 is detachably connected to a front pipe box 110 and a rear pipe box 120 at both ends along the first direction. A partition 111 is provided in the front pipe box 110, which divides the front pipe box 110 into a first chamber 112 and a second chamber 113. The first chamber 112 and the second chamber 113 are independent of each other, and in the vertical direction, the first chamber 112 is located above the second chamber 113. A liquid inlet 114 is provided on the first chamber 112, and a liquid outlet 115 is provided on the second chamber 113.

[0036] Specifically, the front pipe box 110 and the rear pipe box 120 are both connected to the housing 100 through flanges.

[0037] During use, the heat exchange medium is sent into the first chamber 112 from the liquid inlet 114. Since the limiting tube 211 passes through in the first direction, the heat exchange medium entering the first chamber 112 will enter the limiting tube 211 of the positioning plate 210, which is in the upper half of the first chamber 112 in the vertical direction. Then, the heat exchange medium will enter the interior of the heat exchange tube 300 from the limiting tube 211, and flow from the interior of the heat exchange tube 300 to the rear pipe box 120. The heat exchange medium entering the rear pipe box 120 will then pass through the limiting tube 211 of the positioning plate 210, which is in the lower half of the second chamber 113 in the vertical direction, in the reverse direction, and enter the second chamber 113 after passing through this part of the heat exchange tube 300, and finally flow out from the liquid outlet 115.

[0038] At the same time, sewage is fed into the housing 100 through the water inlet 101. The sewage, whose temperature is higher than that of the heat exchange medium, flows through the housing 100 and finally flows out through the water outlet 102. During this process, the sewage, isolated and heat-conducted by the heat exchange tubes 300, exchanges heat with the heat exchange medium inside the heat exchange tubes 300, achieving heat exchange between the two fluids.

[0039] Specifically, the mounting plate 220 is provided with a plurality of through slots 222, each corresponding to a heat exchange tube 300. Each through slot 222 is connected to its corresponding heat exchange tube 300. The positioning tube 211 includes a first tube segment 212 and a second tube segment 213. The positioning plate 210, the first tube segment 212, and the second tube segment 213 are fixedly connected in sequence along a first direction and are interconnected. The first tube segment 212 is located on the side of the second tube segment 213 that is farther away from the heat exchange tube 300 in the first direction. The diameter of the first tube segment 212 is larger than that of the second tube segment 213. The first tube segment 212 is inserted into the through slot 222, and the second tube segment 213 passes through the mounting slot 221 and is inserted into the heat exchange tube 300.

[0040] The through-slot 222 is provided to limit the position of the first pipe segment 212. After the first pipe segment 212 is inserted into the through-slot 222 and the second pipe segment 213 is inserted into the heat exchange tube 300, the first and second pipe segments 212, 213 can be connected to the heat exchange tube 300. For example, the heat exchange medium in the first chamber 112 of the front pipe box 110 will flow from the positioning plate 210 through the first and second pipe segments 212, 213, and into the interior of the heat exchange tube 300. Furthermore, the first and second pipe segments 212, 213 can also prevent the heat exchange tube 300 from sliding within the mounting groove 221 along the direction of the spiral line of the mounting groove 221.

[0041] More specifically, the mounting groove 221 has a T-shaped cross-section perpendicular to the first direction. The mounting groove 221 includes a first groove section 223 and a second groove section 224, which are arranged sequentially in the first direction and interconnected. The first groove section 223 is located on the side of the second groove section 224 that is closer to the positioning plate 210 in the first direction. The heat exchange tube 300 includes a tube body 310 and two protrusions 320. Both the tube body 310 and the two protrusions 320 are tubular structures. The two protrusions 320 are fixedly mounted at both ends of the tube body 310 along the first direction. The two protrusions 320 are integrally formed with the tube body 310. The protrusions 320 are slidably mounted within the first groove section 223, and the tube body 310 is slidably mounted within the second groove section 224.

[0042] By configuring the mounting groove 221 as the first groove section 223 and the second groove section 224 , the heat exchange tube 300 can be limited in the first direction to prevent the heat exchange tube 300 from being separated from the mounting plate 220 .

[0043] Furthermore, the mounting groove 221 has a first end and a second end. The first end spirally extends outward about the axis of the mounting groove 221 in the first direction to the second end, and the first end is located on the side of the second end closer to the spiral center of the mounting groove 221. The mounting plate 220 is provided with a connecting groove 225, which is arranged in a radial direction of the mounting plate 220 and communicates with the second end of the mounting groove 221. A blocking block 226 is detachably mounted on the connecting groove 225 of the mounting plate 220.

[0044] Specifically, the blocking block 226 is installed in the connecting groove 225 of the mounting plate 220 by means of bolts.

[0045] By providing the connecting groove 225, when installing the heat exchange tube 300, the heat exchange tube 300 is slid from the connecting groove 225 into the second end of the installation groove 221, and then the heat exchange tube 300 is slid from the second end of the installation groove 221 toward the first end of the installation groove 221 until the heat exchange tube 300 reaches the first end of the installation groove 221. Thereafter, multiple heat exchange tubes 300 are sequentially installed from the connecting groove 225 into the installation groove 221, and the heat exchange tubes 300 correspond one to one with the through grooves 222. After installation is completed, the second end of the installation groove 221 is blocked with the blocking block 226 to prevent the heat exchange tube 300 from detaching from the mounting plate 220.

[0046] In a further embodiment, a flow guide 400 is disposed within the housing 100 and is located between the two mounting plates 220. The flow guide 400 includes a plurality of flow guide plates 410 and a plurality of flow guide rods 420. The plurality of flow guide plates 410 are sequentially spaced along a first direction within the housing 100 and are coaxial with the housing 100. The outer peripheral walls of the flow guide plates 410 abut against the inner peripheral walls of the housing 100. The flow guide plates 410 are provided with flow guide grooves 411 extending along the first direction. The flow guide grooves 411 are vortex-shaped and have the same shape as the mounting grooves 221. The heat exchange tubes 300 sequentially pass through the flow guide grooves 411 of the plurality of flow guide plates 410 along the first direction. The plurality of flow guide rods 420 are each disposed along the first direction. One end of the flow guide rod 420 is fixedly mounted to one of the mounting plates 220, while the other end of the flow guide rod 420 sequentially passes through the plurality of flow guide plates 410 along the first direction and is then fixedly connected to the other mounting plate 220. The guide rod 420 is located at the second end of the mounting groove 221 and away from the first end of the mounting groove 221 in the radial direction of the mounting plate 220. A plurality of guide rods 420 are evenly distributed in the housing 100 around the first direction.

[0047] Specifically, four guide plates 410 are provided, and six guide rods 420 are provided. The guide groove 411 has a third end and a fourth end. The third end spirally extends outward around the axis of the guide groove 411 in the first direction to the fourth end. The third end is located on a side of the fourth end close to the spiral center of the guide groove 411.

[0048] In this embodiment, the guide plate 410 is provided to guide the sewage entering the shell 100 , thereby increasing the flow time of the sewage inside the shell 100 and improving the heat exchange effect between the sewage and the heat exchange medium inside the heat exchange tube 300 .

[0049] In another possible embodiment, the flow guide 400 further includes a guide rod 430. The guide rod 430 is arranged along the first direction and coaxial with the housing 100. The guide rod 430 is located in the middle of the flow guide plate 410. One end of the guide rod 430 is fixedly mounted on one of the mounting plates 220, and the other end of the guide rod 430 passes through the plurality of flow guide plates 410 in sequence along the first direction and is then fixedly connected to another mounting plate 220.

[0050] The multiple guide plates 410 are evenly divided into multiple first plates 412 and multiple second plates 413 arranged sequentially along a first direction, with the first plates 412 and second plates 413 alternately arranged in the first direction. The water inlet 101 and the water outlet 102 are arranged sequentially along the first direction and are located on either side of the multiple guide plates 410 in the first direction. The water inlet 101 is located on the side of the water outlet 102 in the first direction that is closer to the head pipe box 110 and is located below the water outlet 102. This maximizes the time that sewage flows within the housing 100 and improves heat exchange.

[0051] The guide rod 420 is provided with a plurality of first stops 421, each of which corresponds to the first plate 412. The first stops 421 are located on a side of the first plate 412 that is away from the water inlet 101 in the first direction. The guide rod 430 is provided with a plurality of second stops 431, each of which corresponds to the second plate 413. The second stops 431 are located on a side of the second plate 413 that is away from the water inlet 101 in the first direction.

[0052] In this embodiment, a first stopper 421 is provided on the guide rod 420, and a second stopper 431 is provided on the guide rod 430. After the sewage enters the housing 100 from the side of the water inlet 101, the first stopper 421 will limit the first plate 412 when the sewage passes through the first plate 412. When the sewage hits the first plate 412, the third end of the first plate 412 can be deformed relative to its fourth end along the first direction toward the side away from the water inlet 101, so that the sewage can be guided from the four sides of the first plate 412 to the center under the action of the first plate 412 and the first stopper 421. When the sewage hits the second plate 413, the fourth end of the second plate 413 can be deformed relative to its third end along the first direction toward the side away from the water inlet 101, so that the sewage can be guided from the middle of the second plate 413 to the surrounding areas under the action of the second plate 413 and the second stopper 431. In the process of the sewage passing through the first plate 412 and the second plate 413 alternately distributed in the first direction, the sewage is alternately guided, further improving the heat exchange effect between the sewage and the heat exchange medium inside the heat exchange tube 300.

[0053] In combination with the above embodiment, the specific working process is as follows:

[0054] When installing the heat exchange tube 300, slide the heat exchange tube 300 from the connecting groove 225 into the second end of the mounting groove 221. Then, slide the heat exchange tube 300 from the second end of the mounting groove 221 toward the first end of the mounting groove 221 until the heat exchange tube 300 reaches the first end of the mounting groove 221. Then, install multiple heat exchange tubes 300 from the connecting groove 225 into the mounting groove 221 in sequence, ensuring that the heat exchange tubes 300 correspond one to one with the through grooves 222. After installation is complete, use the blocking block 226 to block the second end of the mounting groove 221 to prevent the heat exchange tube 300 from detaching from the mounting plate 220. Then, install the guide plate 410, guide rod 420, and guide rod 430.

[0055] Then align the limiting tube 211 on the positioning plate 210 with the corresponding heat exchange tube 300, so that the limiting tube 211 is connected to the interior of the heat exchange tube 300, and then use bolts to temporarily fix the positioning plate 210 and the mounting plate 220 to complete the installation of the heat exchange tube 300. The installed heat exchange tube 300 will be restricted by the limiting tube 211 and cannot slide along the extension direction of its spiral line in the mounting groove 221. Then use bolts to install the positioning plate 210 in the shell 100. After the installation is completed, the heat exchange operation can be carried out.

[0056] The heat exchange medium is sent into the first chamber 112 from the liquid inlet 114. Since the limiting tube 211 passes through in the first direction, the heat exchange medium entering the first chamber 112 will enter the limiting tube 211 of the positioning plate 210, which is in the upper half of the first chamber 112 in the vertical direction. Then, the heat exchange medium will enter the interior of the heat exchange tube 300 from the limiting tube 211, and flow from the interior of the heat exchange tube 300 to the rear pipe box 120. The heat exchange medium entering the rear pipe box 120 then passes in the opposite direction through the limiting tube 211 of the positioning plate 210, which is in the lower half of the second chamber 113 in the vertical direction, and enters the second chamber 113 after passing through this part of the heat exchange tube 300, and finally flows out from the liquid outlet 115.

[0057] At the same time, sewage is fed into the housing 100 through the water inlet 101. The sewage, whose temperature is higher than that of the heat exchange medium, flows through the housing 100 and finally flows out through the water outlet 102. During this process, the sewage, isolated and heat-conducted by the heat exchange tubes 300, exchanges heat with the heat exchange medium inside the heat exchange tubes 300, achieving heat exchange between the two fluids.

[0058] When the outer surface of the heat exchange tube 300 needs to be cleaned, the front tube box 110 and the rear tube box 120 are first disassembled, and then the positioning plate 210 and the shell 100 are unlocked. Figure 4 As shown, the internal structure of the shell 100 is taken out. Then the inside of the heat exchange tube 300 can be cleaned.

[0059] Then, the positioning plate 210 and the mounting plate 220 are unlocked. After being unlocked, the heat exchange tube 300 can slide freely in the mounting groove 221 along the extension direction of its spiral line, so that multiple heat exchange tubes 300 no longer block each other, making it convenient for operators to clean the outside of the heat exchange tube 300. Moreover, it is only necessary to remove the positioning plate 210 so that the heat exchange tube 300 is in a semi-disassembled state on the mounting plate 220, which greatly improves the convenience of installation and removal of the heat exchange tube 300.

[0060] The present invention also provides a high-efficiency and easy-to-clean sewage source heat pump. A high-efficiency and easy-to-clean sewage source heat pump includes the above-mentioned heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump, and also includes a sewage pump, an intermediate pump, a heat pump unit and a terminal pump. Among them, the sewage pump is used to lift sewage and transport the sewage to the heat exchanger. The intermediate pump is used to transport the heat exchange medium (generally clean water) to the heat pump unit, and then return it to the heat exchanger after completing the heat transfer. The heat pump unit mainly includes an evaporator and a condenser, which is responsible for achieving heating and cooling. The terminal pump is used to transport the sewage at the end to the terminal. The sewage pump, intermediate pump, heat pump unit and terminal pump are not shown in the drawings and are all prior art, so no further details will be given here.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency and easy-to-clean heat exchanger for a sewage source heat pump, characterized by: The heat exchanger comprises a shell, two positioning assemblies and a plurality of heat exchange tubes; the shell is arranged in a horizontal direction, and the axial direction of the shell is referred to as a first direction; the heat exchange tube is arranged in the shell along the first direction, and both ends of the heat exchange tube are connected; the two positioning assemblies are respectively located at both ends of the shell in the first direction and are detachably connected to the shell; the positioning assembly comprises a positioning plate and a mounting plate, which are sequentially arranged in the shell along the first direction and are coaxial with the shell, the positioning plate is located on the side of the mounting plate away from the heat exchange tube in the first direction, and is detachably connected to the mounting plate; a mounting groove with a vortex structure is provided on the mounting plate, and the mounting plate is installed The plane where the groove vortex line is located is a vertical plane, and the end of the heat exchange tube is slidably installed in the installation groove, and multiple heat exchange tubes are arranged in sequence along the extension direction of the installation groove vortex line; a plurality of limiting tubes are provided on the positioning plate, and the plurality of limiting tubes are arranged along the first direction and penetrate the positioning plate in the first direction; the limiting tube is located on the side of the positioning plate close to the mounting plate in the first direction, and the limiting tube and the heat exchange tube are arranged one by one, and the limiting tube passes through the mounting groove along the first direction and extends into the heat exchange tube corresponding to it; a plurality of through slots are provided on the mounting plate, and the through slots are arranged one by one corresponding to the heat exchange tube, and each through slot corresponds to it The heat exchange pipe is connected; the limiting pipe includes a first pipe section and a second pipe section, the positioning plate, the first pipe section and the second pipe section are fixedly connected in sequence in the first direction and are connected to each other, the first pipe section is located on the side of the second pipe section away from the heat exchange pipe in the first direction, and the diameter of the first pipe section is larger than the diameter of the second pipe section; the first pipe section is inserted into the through groove, and the second pipe section is inserted into the heat exchange pipe after passing through the installation groove; the installation groove includes a first groove section and a second groove section, the first groove section and the second groove section are arranged in sequence in the first direction and are connected to each other; the first groove section is located on the side of the second groove section close to the positioning plate in the first direction; the heat exchange pipe package The invention comprises a tube body and two protrusions, both of which are tubular structures, and the two protrusions are fixedly mounted on the two ends of the tube body along the first direction, the protrusions are slidably mounted in the first groove section, and the tube body is slidably mounted in the second groove section; the mounting groove has a first end and a second end, the first end spirally extends outward around the axis of the mounting groove in the first direction to the second end, and the first end is located on the side of the second end close to the vortex center of the mounting groove; a connecting groove is provided on the mounting disk, the connecting groove is arranged along the radial direction of the mounting disk, and the connecting groove is connected to the second end of the mounting groove; a blocking block is detachably mounted on the connecting groove of the mounting disk.

2. The heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump according to claim 1, characterized in that: The distribution length of the plurality of heat exchange tubes sequentially arranged along the extension direction of the spiral line of the installation groove is shorter than the length of the spiral line of the installation groove.

3. The heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump according to claim 1, characterized in that: A water inlet and a water outlet are provided on the shell; the shell is detachably connected to a front pipe box and a rear pipe box at both ends along the first direction, and a first chamber and a second chamber independent of each other are provided in the front pipe box, and in the vertical direction, the first chamber is located on the upper side of the second chamber; a liquid inlet is provided on the first chamber, and a liquid outlet is provided on the second chamber.

4. The heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump according to claim 3, characterized in that: A partition is provided in the front pipe box, and the first chamber and the second chamber are separated by the partition.

5. The heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump according to claim 1, characterized in that: A flow guide is provided in the shell, and the flow guide is located between the two mounting disks. The flow guide includes multiple guide plates and multiple guide rods; the multiple guide plates are arranged in sequence along the first direction in the shell and are coaxial with the shell, and a flow guide groove is provided on the guide plate that passes through the first direction, and the flow guide groove has the same shape as the mounting groove; the heat exchange tube passes through the guide grooves on the multiple guide plates in sequence along the first direction; the multiple guide rods are all arranged along the first direction, one end of the guide rod is installed on one of the mounting disks, and the other end of the guide rod passes through the multiple guide plates in sequence along the first direction and is connected to the other mounting disk, and the second end of the guide rod is located at the side of the first end of the mounting groove away from the first end of the mounting groove in the radial direction of the mounting disk.

6. The heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump according to claim 5, characterized in that: The guide member also includes a guide rod; the guide rod is arranged along the first direction and is coaxial with the shell, one end of the guide rod is installed on one of the mounting plates, and the other end of the guide rod passes through multiple guide plates in sequence along the first direction and is connected to another mounting plate; the multiple guide plates are evenly divided into multiple first plates and multiple second plates arranged in sequence along the first direction, and the first plates and the second plates are alternately distributed in sequence in the first direction; the water inlet and the water outlet are arranged in sequence in the first direction, and are respectively located on both sides of the multiple guide plates in the first direction, and a plurality of first blocks are provided on the guide rod, the first blocks are arranged in one-to-one correspondence with the first plates, and the first block is located on the side of the first plate away from the water inlet in the first direction; a plurality of second blocks are provided on the guide rod, the second blocks are arranged in one-to-one correspondence with the second plates, and the second block is located on the side of the second plate away from the water inlet in the first direction.

7. A high-efficiency and easy-to-clean sewage source heat pump, comprising a heat exchanger of a high-efficiency and easy-to-clean sewage source heat pump according to any one of claims 1 to 6.

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