Heat exchanger of water chilling unit

Abstract

A water chilling unit heat exchanger belongs to the technical field of heat exchangers. Comprising a shell, a coil pipe and a base, the coil pipe is arranged in the shell, and the base is arranged at the lower end of the shell; the shell comprises a shell body, a water inlet pipe, a water outlet pipe, a first connecting pipe and a second connecting pipe; a water inlet pipe, a water outlet pipe, a first connecting pipe and a second connecting pipe are arranged on the two sides of the shell body correspondingly. The two ends of the coil pipe extend out of the shell, and matching pieces are arranged at the ends of the coil pipe. According to the utility model, the coil pipe is detachably arranged on the shell, so that when the coil pipe is damaged, the matching piece can be detached, and the coil pipe can be detached; the coil pipe is made of the titanium material, so that the heat exchanger has the effect of improving corrosion resistance while maintaining heat transfer efficiency, and the structure of the coil pipe enables the heat exchanger to have the effects of improving vibration resistance and being easy to replace. The matching pieces are arranged at the ends of the coil pipes, so that the coil pipes are connected, and meanwhile the sealing performance can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and in particular relates to a heat exchanger for a chiller unit. Background Technology

[0002] Heat exchangers are widely used in heating devices, air conditioning units, generators, waste heat recovery devices, etc. In a coil-type heat exchanger, a spirally wound coil is placed inside a tank-like shell, with both ends of the coil exposed to the outside through holes in the shell. Refrigerant or coolant can circulate inside the shell, and vice versa, within the coil. Typically, the coil is fixed by welding, and the strength of the welded parts is relatively weak, making them susceptible to damage during use. In particular, the coil becomes more vulnerable to vibration transmitted from the outside to the shell, and there is a risk of internal liquid leakage to the outside due to damage to the welded joints. Since the coil is welded and fixed to the shell, if the coil is damaged, the heat exchanger must be replaced.

[0003] Therefore, there is an urgent need for a heat exchanger for chiller units to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a heat exchanger for a chiller unit to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat exchanger for a chiller unit, comprising a shell, a coil, and a base, wherein the coil is disposed inside the shell, and the base is disposed at the lower end of the shell; the shell comprises a shell body, an inlet pipe, an outlet pipe, a first connecting pipe, and a second connecting pipe; the inlet pipe, the outlet pipe, the first connecting pipe, and the second connecting pipe are respectively disposed on both sides of the shell body; the two ends of the coil extend out of the shell, and the ends of the coil are provided with mating parts.

[0006] The water inlet pipe is located at the lower part of one side of the shell body and is internally connected to the shell body; the water outlet pipe is located at the upper part of one side of the shell body and is internally connected to the shell body.

[0007] The first connecting pipe is located on the upper part of the other side of the housing body, and the first connecting pipe is internally connected to the housing body; the second connecting pipe is located on the lower part of the other side of the housing body, and the second connecting pipe is internally connected to the housing body; the first connecting pipe and the second connecting pipe are located on the same axis.

[0008] The coil is made of titanium, which has corrosion resistance and good ductility. The coil includes a winding section, an upper straight section and a lower straight section. The winding section is spirally arranged in the housing body. The upper end of the winding section is connected to the upper straight section and the lower end of the winding section is connected to the lower straight section.

[0009] The upper straight part and the lower straight part extend out of the housing body through the first connecting pipe and the second connecting pipe, respectively, and both the upper straight part and the lower straight part are connected to the mating parts.

[0010] The fitting components include a housing fitting component and a pipe fitting component. The housing fitting component is disposed between the upper straight section and the first connecting pipe, and between the upper straight section and the second connecting pipe. The pipe fitting component is disposed at the ends of the upper straight section and the lower straight section.

[0011] The housing assembly includes a housing connector, a housing nut, and a housing sealing ring; one end of the housing connector is threaded to the inner ring of the first connecting pipe and the second connecting pipe, and the other end of the housing connector is threaded to the housing nut; the housing sealing ring is fitted on the upper straight part and the lower straight part, and the housing sealing ring is located between the housing connector and the housing nut.

[0012] The pipe fittings include a pipe joint, a pipe nut, and a pipe sealing ring; the pipe joint is threaded onto the inner ring of the pipe nut; the pipe sealing ring is fitted onto the upper and lower straight parts, and is located between the pipe joint and the pipe nut.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features a removable coil mounted on the housing. When the coil is damaged, it can be removed by disassembling the mating parts. The coil is made of titanium, which maintains heat transfer efficiency while increasing corrosion resistance. The structure of the coil also increases the heat exchanger's vibration resistance and makes it easy to replace.

[0015] The end of the coil of this utility model is provided with a mating part, so that the coil can be connected while ensuring a tight seal. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a heat exchanger for a water chiller unit.

[0017] Figure 2 This is a cross-sectional schematic diagram of a heat exchanger for a water chiller unit.

[0018] In the diagram: 1. Shell; 11. Shell body; 12. Inlet pipe; 13. Outlet pipe; 14. First connecting pipe; 15. Second connecting pipe; 2. Coil; 21. Winding part; 22. Upper straight part; 23. Lower straight part; 3. Base; 4. Fitting parts; 41. Shell fitting parts; 411. Shell joint; 412. Shell nut; 413. Shell sealing ring; 42. Pipe fitting parts; 421. Pipe joint; 422. Pipe nut; 423. Pipe sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2 This utility model provides a technical solution: a heat exchanger for a chiller unit, including a shell 1, a coil 2, and a base 3. The coil 2 is disposed inside the shell 1, and the base 3 is disposed at the lower end of the shell 1. The shell 1 includes a shell body 11, an inlet pipe 12, an outlet pipe 13, a first connecting pipe 14, and a second connecting pipe 15. The inlet pipe 12, the outlet pipe 13, the first connecting pipe 14, and the second connecting pipe 15 are respectively disposed on both sides of the shell body 11. The two ends of the coil 2 extend out of the shell 1, and the end of the coil 2 is provided with a mating part 4.

[0021] The shell 1 is a hollow barrel-shaped structure made of corrosion-resistant metal material.

[0022] The water inlet pipe 12 is located at the lower part of one side of the housing body 11, and the water inlet pipe 12 is connected to the inside of the housing body 11, providing a path for the coolant to enter the housing body 11.

[0023] The water outlet pipe 13 is located on the upper part of one side of the housing body 11, and the water outlet pipe 13 is connected to the inside of the housing body 11, providing a path for the coolant to flow out.

[0024] Furthermore, the inlet pipe 12 and the outlet pipe 13 are located in opposite positions on the housing body 11, that is, the inlet pipe 12 and the outlet pipe can be located on the upper part of one side of the housing body 11 and the lower part of one side of the housing body 11, respectively.

[0025] The first connecting pipe 14 is located on the upper part of the other side of the housing body 11, and the first connecting pipe 14 is connected to the housing body 11. The first connecting pipe 14 provides a path through which the coil 2 can pass.

[0026] The second connecting pipe 15 is located on the lower part of the other side of the housing body 11, and the second connecting pipe 15 is connected to the inside of the housing body 11, providing a path through which the coil 2 can pass.

[0027] The first connecting pipe 14 and the second connecting pipe 15 are located on the same axis.

[0028] The coil 2 is connected to an external refrigerant pipeline, and the refrigerant can flow inside the coil 2.

[0029] The coil 2 includes a winding section 21, an upper straight section 22, and a lower straight section 23; the winding section 21 is spirally arranged inside the housing body 11, the upper end of the winding section 21 is connected to the upper straight section 22, and the lower end of the winding section 21 is connected to the lower straight section 23.

[0030] The coil 2 is made of titanium, which is corrosion-resistant and has good ductility. Compared to copper, which was previously used, titanium has higher corrosion resistance, extending its service life. When vibration occurs, the ductility of the titanium coil 2 reduces vibration damage to connection points or contact points with other components. Furthermore, titanium's corrosion resistance reduces the degree of corrosion when in contact with refrigerant. Titanium has higher mechanical strength than copper, allowing for a reduction in the thickness of the coil 2, resulting in higher thermal conductivity.

[0031] Furthermore, in order to enhance the strength of the coil 2, a reinforcing layer can be provided on the inner circumferential surface of the coil 2, and the inner diameter of the reinforcing layer is smaller than the inner diameter of the coil 2.

[0032] The upper straight portion 22 and the lower straight portion 23 extend out of the housing body 11 through the first connecting pipe 14 and the second connecting pipe 15, respectively, and both the upper straight portion 22 and the lower straight portion 23 are connected to the mating part 4.

[0033] When the coil 2 is wound inside the housing body 11, the outer surface of the coil 2 is in contact with the coolant received inside the housing body 11.

[0034] The fitting component 4 includes a housing fitting component 41 and a pipe fitting component 42. The housing fitting component 41 is disposed between the upper straight portion 22 and the first connecting pipe 14, and between the upper straight portion 22 and the second connecting pipe 15, so that it can seal between the upper straight portion 22 and the first connecting pipe 14, and between the lower straight portion 23 and the second connecting pipe 15. The pipe fitting component 42 is disposed at the ends of the upper straight portion 22 and the lower straight portion 23, and is used to connect with an external refrigerant pipe, so that the upper straight portion 22 and the lower straight portion 23 are sealed with the refrigerant pipe.

[0035] The housing fitting 41 includes a housing connector 411, a housing nut 412, and a housing sealing ring 413; one end of the housing connector 411 is threaded to the inner ring of the first connecting pipe 14 and the second connecting pipe 15, and the other end of the housing connector 411 is threaded to the housing nut 412; the housing sealing ring 413 is sleeved on the upper straight part 22 and the lower straight part 23, and the housing sealing ring 413 is located between the housing connector 411 and the housing nut 412.

[0036] Furthermore, the housing connector 411 and housing nut 412 press evenly against both sides of the housing sealing ring 413, and the housing sealing ring 413 seals between the upper straight part 22 and the housing connector 411 and housing nut 412, as well as between the lower straight part 23 and the housing connector 411 and housing nut 412.

[0037] The pipe fitting 42 includes a pipe joint 421, a pipe nut 422, and a pipe sealing ring 423; the pipe joint 421 is threadedly connected to the inner ring of the pipe nut 422; the pipe sealing ring 423 is sleeved on the upper straight part 22 and the lower straight part 23, and the pipe sealing ring 423 is located between the pipe joint 421 and the pipe nut 422.

[0038] Furthermore, the end of the pipe joint 421 away from the pipe nut 422 is used to connect to an external refrigerant pipe.

[0039] Furthermore, the pipe joint 421 and pipe nut 422 are pressed evenly against both sides of the pipe sealing ring 423, and the pipe sealing ring 423 seals between the upper straight part 22 and the pipe joint 421 and pipe nut 422, as well as between the lower straight part 23 and the pipe joint 421 and pipe nut 422.

[0040] The coil 2 is connected to the housing body 11 via the mating part 4. When the coil 2 is damaged, the coil 2 can be removed by removing the mating part 4.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchanger for a chiller unit, characterized in that, The device includes a housing (1), a coil (2), and a base (3). The coil (2) is installed inside the housing (1), and the base (3) is installed at the lower end of the housing (1). The housing (1) includes a housing body (11), an inlet pipe (12), an outlet pipe (13), a first connecting pipe (14), and a second connecting pipe (15). The inlet pipe (12), the outlet pipe (13), the first connecting pipe (14), and the second connecting pipe (15) are respectively installed on both sides of the housing body (11). The two ends of the coil (2) extend out of the housing (1), and the end of the coil (2) is provided with a fitting (4).

2. A heat exchanger for a chiller unit according to claim 1, characterized in that: The water inlet pipe (12) is located at the lower part of one side of the shell body (11), and the water inlet pipe (12) is connected to the shell body (11); the water outlet pipe (13) is located at the upper part of one side of the shell body (11), and the water outlet pipe (13) is connected to the shell body (11).

3. A heat exchanger for a chiller unit according to claim 1, characterized in that: The first connecting pipe (14) is located on the upper part of the other side of the housing body (11), and the first connecting pipe (14) is connected to the housing body (11); the second connecting pipe (15) is located on the lower part of the other side of the housing body (11), and the second connecting pipe (15) is connected to the housing body (11); the first connecting pipe (14) and the second connecting pipe (15) are located on the same axis.

4. A chiller heat exchanger according to claim 1, characterized in that: The coil (2) is made of titanium, which has corrosion resistance and good ductility. The coil (2) includes a winding part (21), an upper straight part (22) and a lower straight part (23). The winding part (21) is spirally arranged inside the housing body (11). The upper end of the winding part (21) is connected to the upper straight part (22), and the lower end of the winding part (21) is connected to the lower straight part (23).

5. A chiller heat exchanger according to claim 4, characterized in that: The upper straight part (22) and the lower straight part (23) extend out of the housing body (11) through the first connecting pipe (14) and the second connecting pipe (15), respectively, and both the upper straight part (22) and the lower straight part (23) are connected to the mating part (4).

6. A heat exchanger for a chiller unit according to claim 1, characterized in that: The fitting component (4) includes a housing fitting component (41) and a pipe fitting component (42). The housing fitting component (41) is disposed between the upper straight part (22) and the first connecting pipe (14) and between the upper straight part (22) and the second connecting pipe (15). The pipe fitting component (42) is disposed at the ends of the upper straight part (22) and the lower straight part (23).

7. A chiller heat exchanger according to claim 6, characterized in that: The housing fitting (41) includes a housing connector (411), a housing nut (412), and a housing sealing ring (413); one end of the housing connector (411) is threaded to the inner ring of the first connecting pipe (14) and the second connecting pipe (15), and the other end of the housing connector (411) is threaded to the housing nut (412); the housing sealing ring (413) is sleeved on the upper straight part (22) and the lower straight part (23), and the housing sealing ring (413) is located between the housing connector (411) and the housing nut (412).

8. A chiller heat exchanger according to claim 6, characterized in that: The pipe fitting (42) includes a pipe joint (421), a pipe nut (422), and a pipe sealing ring (423); the pipe joint (421) is threaded onto the inner ring of the pipe nut (422); the pipe sealing ring (423) is sleeved on the upper straight part (22) and the lower straight part (23), and the pipe sealing ring (423) is located between the pipe joint (421) and the pipe nut (422).

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