Air energy bundling sleeve heat exchanger

Abstract

The utility model discloses an air energy bundling double-pipe heat exchanger. A liquid inlet and a liquid outlet are formed in the side portions of the two ends of a spiral pipe respectively. The two ends of the spiral pipe are external thread ports; a plurality of capillary tubes are arranged in the spiral pipe in a surrounding mode, and the two ends of each capillary tube are provided with a refrigerant inlet port and a refrigerant outlet port in a welded mode. A locking nut is arranged to be matched with each of the refrigerant inlet port and the refrigerant outlet port, and the refrigerant inlet port and the refrigerant outlet port are fixed in the spiral pipe in a sealed mode through the locking nuts; the heat exchanger is simple and novel in structural design, the structure which can move in a limited mode and can be detached at the two ends is arranged in the spiral pipe, the two ends are detached during cleaning, dirt is removed through medicine introduction, the heat exchange area can be effectively increased through the structure of the capillary pipes, and the heat exchange efficiency is improved. The air energy bundling double-pipe heat exchanger overcomes the defects in the prior art and is an ideal air energy bundling double-pipe heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of refrigerant heat exchange technology, and in particular to an air-source bundled tube heat exchanger. Background Technology

[0002] As is well known, in the field of refrigerant heat exchange technology, existing technologies mostly employ coil structures for heat exchange. Heat exchange is achieved by introducing refrigerant inside the coil and installing sealed pipes or compartments outside the coil. However, in the fields of air conditioning and heat pumps, the assembly quantity of such heat exchange tubes is usually small. Existing technologies, which use a structure with coils installed in a sealed compartment, result in large heat exchange components that occupy significant assembly space, causing considerable assembly difficulties in the already limited engine compartment.

[0003] Those skilled in the art have considered placing the heat exchange device inside a pipe, that is, using a shell-and-tube method, introducing refrigerant into the inner tube and placing water in the outer tube, and achieving heat exchange through the inner tube. However, although this heat exchange method is an improvement over the heat exchange chamber structure, its heat exchange efficiency still needs to be improved. Furthermore, the outer wall of the inner tube of the existing heat exchanger is prone to the accumulation of deposits. Because the heat exchanger structure is sealed, this accumulation of scale directly leads to the inability to clean it. If it is not cleaned for a long time, it will cause blockage inside the heat exchanger, greatly reducing the heat exchange efficiency. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, the present invention aims to develop an air-source bundled tube heat exchanger, which aims to reduce the heat exchange area, increase the heat exchange efficiency, and facilitate internal cleaning, thereby avoiding the accumulation of scale that could cause internal blockage and reduce the efficiency of liquid flow.

[0005] The technical solution adopted is as follows:

[0006] An air-source heat exchanger with a coiled tube includes a spiral tube with an inlet and an outlet at each end. Both ends of the spiral tube are externally threaded. Several capillary tubes are arranged inside the spiral tube, and refrigerant inlet and refrigerant outlet ports are welded to both ends of the capillary tubes. A locking nut is provided for each refrigerant inlet and refrigerant outlet port, and the locking nut seals and fixes the refrigerant inlet and refrigerant outlet ports inside the spiral tube.

[0007] Both the refrigerant inlet and outlet ports are equipped with an insertion section and a positioning section. The insertion section has an outer diameter groove through which a sealing ring is fixed. The sealing ring matches and seals against the inner wall of the spiral tube. The positioning section is used to cooperate with a lock nut for positioning.

[0008] The spiral tube is provided with a fixed seat, and the fixed seat is provided with a central protrusion, which is used to support the frame.

[0009] The inlet and outlet refrigerant ports are respectively provided with an inlet pipe and an outlet pipe, and the diameter of the inlet pipe is larger than that of the outlet pipe.

[0010] The beneficial effects of this utility model are as follows: This utility model has an inlet and an outlet respectively provided on both ends of the spiral tube; both ends of the spiral tube are externally threaded ports; several capillary tubes are arranged around the inside of the spiral tube, and both ends of the capillary tubes are welded with a refrigerant inlet port and a refrigerant outlet port; a locking nut is provided for each refrigerant inlet port and refrigerant outlet port, sealing and fixing the refrigerant inlet port and refrigerant outlet port inside the spiral tube; this utility model has a simple and novel structural design. By setting a structure that allows limited movement and can be disassembled at both ends inside the spiral tube, the scale can be removed by introducing chemicals during cleaning. The use of several capillary tubes can effectively increase the heat exchange area and improve the heat exchange efficiency. It overcomes the shortcomings of the prior art and is an ideal air-source bundled tube heat exchanger. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the welding structure of the refrigerant inlet port and the refrigerant outlet port;

[0013] Figure 3 This is a schematic diagram of the assembly structure of this utility model;

[0014] Reference numerals: 1. Spiral tube, 11. Liquid inlet, 12. Liquid outlet, 2. Fixing base, 21. Locking surface, 22. Central protrusion, 3. Capillary tube, 4. Refrigerant inlet port, 41. Inlet tube, 42. Positioning section, 43. Insertion section, 44. Outer diameter groove, 5. Refrigerant outlet port, 51. Outlet tube, 6. Locking nut. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0016] As shown in the attached figure, an air-source bundled tube heat exchanger includes a spiral tube 1. A fixing seat 2 is welded to the outside of the spiral tube 1. The fixing seat 2 is provided with a central protrusion 22. Locking surfaces 21 are provided at both ends of the central protrusion 22. The locking surfaces 21 are used to fix the tube to the side wall of the equipment, and the central protrusion 22 is used to support the tube and prevent the spiral tube 1 from having more contact with the outside, thus avoiding heat loss.

[0017] The spiral tube 1 has an inlet 11 and an outlet 12 on each of its two ends; both ends of the spiral tube 1 are provided with external threaded ports; a plurality of capillary tubes 3 are arranged around the spiral tube 1, and the ends of the capillary tubes 3 are welded with a refrigerant inlet port 4 and a refrigerant outlet port 5; a locking nut 6 is provided for each of the refrigerant inlet port 4 and the refrigerant outlet port 5, and the locking nut 6 seals and fixes the refrigerant inlet port 4 and the refrigerant outlet port 5 inside the spiral tube 1.

[0018] With the above structural design, this utility model has several independent capillary tubes inside the spiral tube, which can effectively increase the contact area between the refrigerant and the water source and effectively improve the heat exchange efficiency.

[0019] The refrigerant inlet port 4 and refrigerant outlet port 5 have the same structure. Taking the refrigerant inlet port 4 as an example, it includes an insertion section 43 and a positioning section 42. The insertion section 43 has multiple outer diameter grooves 44 spaced apart, through which a sealing ring is fixed. During assembly, the sealing ring matches and seals against the inner wall of the spiral tube 1. The refrigerant inlet port 4 is provided with an inlet pipe 41, and the refrigerant outlet port 5 is provided with an outlet pipe 51. The positioning section 42 is used to cooperate with the locking nut 6 for positioning.

[0020] When the refrigerant inlet port 4 and refrigerant outlet port 5 are connected to the capillary tube 3, as follows: Figure 1 As shown, after the capillary tube is inserted into the refrigerant inlet port 4 and the refrigerant outlet port 5, a sealed connection is achieved between the two by high-temperature brazing. The welded structure is as follows. Figure 2 As shown. In use, refrigerant is introduced through the inlet pipe 41 on the refrigerant inlet port 4 and discharged through the outlet pipe 51 on the refrigerant outlet port 5.

[0021] This invention also features easy cleaning; when cleaning, such as... Figure 2 As shown, after loosening the locking nut 6, the capillary tube 3, along with the refrigerant inlet port 4 and the refrigerant outlet port 5, can be stretched out within a certain range. Then, the descaling agent is injected into the interior through the liquid inlet port 11 or the liquid outlet port 12. After standing for a while and the internal scale softens, the dissolved substances are cleaned out from the external threaded port.

[0022] During the scale removal process, the refrigerant inlet port 4 or refrigerant outlet port 5 can be pulled by stretching and vibration to loosen the scale inside the spiral tube 1 and remove it.

[0023] Furthermore, the diameter of the inlet pipe 41 on the refrigerant inlet port 4 is larger than the diameter of the outlet pipe 51. In this case, after a metered amount of refrigerant is introduced into the capillary tube 3 from the inlet pipe 41, the pressure at the outlet end will increase because the diameter of the inlet pipe 41 is larger than the diameter of the outlet pipe 51. This effectively increases the flow rate at the end, which can effectively achieve internal high-pressure cleaning and self-cleaning, ensuring that no deposits will form inside the capillary tube 3 and cause blockage.

[0024] In summary, the present invention has a simple and novel structural design. By setting a structure with limited mobility and detachable ends inside the spiral tube 1, the scale can be removed by introducing chemicals during cleaning. The structure of several capillary tubes 3 can effectively increase the heat exchange area and improve the heat exchange efficiency. It overcomes the shortcomings of the prior art and is an ideal air-source bundled tube heat exchanger.

Claims

1. An air-source bundled tube heat exchanger, characterized in that: Including a spiral pipe, both ends of the spiral pipe are respectively provided with a liquid inlet and a liquid outlet; both ends of the spiral pipe are external threaded ports; a plurality of capillary tubes are arranged around the inside of the spiral pipe, both ends of the plurality of capillary tubes are welded with an inlet port and an outlet port; a locking nut is arranged on the inlet port and the outlet port respectively, and the locking nut seals and fixes the inlet port and the outlet port in the inside of the spiral pipe.

2. The air energy bundle tube heat exchanger according to claim 1, characterized in that: Both the inlet port and the outlet port are provided with an insertion section and a positioning section, the insertion section is provided with an outer diameter groove, a sealing ring is fixed in the outer diameter groove to match and seal with the inner wall of the spiral pipe; the positioning section is used to cooperate with the locking nut to realize positioning.

3. The air energy bundle tube heat exchanger according to claim 1, characterized in that: The spiral pipe is provided with a fixing seat, the fixing seat is provided with a middle protrusion, and the middle protrusion is used to support and arrange the support frame.

4. The air energy bundle tube heat exchanger according to claim 1, characterized in that: The inlet port and the outlet port are respectively provided with an inlet pipe and an outlet pipe, and the diameter of the inlet pipe is greater than that of the outlet pipe.

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