A spiral wound pipe heat exchanger for a heat pump evaporator system
By using the variable pitch design and guide vane structure of the spiral wound tube heat exchanger, the problems of blockage and low heat transfer efficiency in the heat pump evaporation system are solved, achieving high-efficiency heat transfer and a compact structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HANZUN COOLING & HEATING EQUIP CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-02
AI Technical Summary
In existing heat pump evaporation systems, plate or shell-and-tube heat exchangers are prone to clogging and have high maintenance costs. The spiral winding structure has poor adaptability to gas-liquid two-phase flow, low heat transfer efficiency, and large size.
It adopts a spiral wound tube heat exchanger, combined with a variable pitch design and guide vanes to form a secondary vortex, and uses a porous medium distributor to achieve flow self-balancing, resulting in a compact overall structure.
It improves heat transfer efficiency, extends cleaning cycle, reduces two-phase flow pulsation, and reduces equipment size.
Smart Images
Figure CN224316468U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tubular heat exchanger technology, and specifically to a spiral wound tubular heat exchanger for a heat pump evaporation system. Background Technology
[0002] Existing heat pump evaporation systems mostly use plate or shell-and-tube heat exchangers, which have the following problems: traditional heat exchangers are prone to clogging in media containing particles or high viscosity, resulting in high maintenance costs; shell-and-tube heat exchangers are large in size and have low heat transfer efficiency; existing spiral winding structures have poor adaptability to gas-liquid two-phase flow and are prone to generating flow dead zones. Utility Model Content
[0003] To achieve the above objectives, this utility model provides the following technical solution:
[0004] A spiral wound tube heat exchanger for a heat pump evaporation system includes an outer tube body and an inner tube body. Multiple spiral wound tubes are arranged between the outer and inner tube bodies. The front end of each spiral wound tube is connected to a front straight tube, and the rear end of each spiral wound tube is connected to a rear straight tube. A central manifold is arranged inside the inner tube body. Multiple first inner tubes and multiple second inner tubes are arranged on the central manifold. The front end of the central manifold is connected to a first flow guiding device, and the rear end is connected to a second flow guiding device. The multiple front straight tubes are connected to the first flow guiding device, and the multiple rear straight tubes are connected to the second flow guiding device. The first flow guiding device is connected to a first water pump, and the second flow guiding device is connected to a second water pump.
[0005] Preferably, the central manifold is connected in series with the first and second diversion devices via pipes.
[0006] Preferably, the support frame is mounted on the outer shell of the outer tube, the first flow guiding device is connected to the first water pump via a pipe, and the second flow guiding device is connected to the second water pump via a pipe.
[0007] Preferably, multiple front straight pipes are internally connected to the spiral wound pipe, and multiple rear straight pipes are internally connected to the spiral wound pipe.
[0008] Compared with the prior art, the present invention has the following beneficial effects:
[0009] 1. The variable pitch design, combined with the guide vanes, generates secondary vortices in the fluid, thereby improving the heat transfer coefficient;
[0010] 2. Micro-vortex protrusions delay scaling and extend the cleaning cycle;
[0011] 3. The porous media splitter achieves flow self-balancing and reduces two-phase flow pulsation;
[0012] 4. The overall structure is compact, reducing internal space compared to traditional equipment. Attached Figure Description
[0013] Figure 1 This is the front view of the present invention;
[0014] Figure 2 This is a front view of the internal structure of this utility model;
[0015] Figure 3 This is a top view of the internal structure of this utility model;
[0016] Figure 4 This is the left view of the present invention.
[0017] Figure reference numerals: 1. Outer pipe; 2. Support frame; 3. Rear straight pipe; 4. Second flow guiding device; 5. Second water pump; 6. First water pump; 7. Spiral wound pipe; 8. First inner pipe; 9. Front straight pipe; 10. Central manifold; 11. Second inner pipe; 12. Inner pipe; 13. First flow guiding device. Detailed Implementation
[0018] 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.
[0019] like Figure 1-4 As shown, a spiral wound tube heat exchanger for a heat pump evaporation system includes an outer tube body 1 and an inner tube body 12. Multiple spiral wound tubes 7 are arranged between the outer tube body 1 and the inner tube body 12. The front end of each spiral wound tube 7 is connected to a front straight tube 9, and the rear end of each spiral wound tube 7 is connected to a rear straight tube 3. A central manifold 10 is arranged inside the inner tube body 12. Multiple first inner tubes 8 and multiple second inner tubes 11 are arranged on the central manifold 10. The front end of the central manifold 10 is connected to a first flow guiding device 13, and the rear end is connected to a second flow guiding device 4. The multiple front straight tubes 9 are connected to the first flow guiding device 13, and the multiple rear straight tubes 3 are connected to the second flow guiding device 4. The first flow guiding device 13 is connected to a first water pump 6, and the second flow guiding device 4 is connected to a second water pump 5.
[0020] The support frame 2 is set on the outer shell of the outer tube 1. The first flow guiding device 13 is connected to the first water pump 6 through a pipe, and the second flow guiding device 4 is connected to the second water pump 5 through a pipe. Multiple front straight pipes 9 are internally connected to the spiral wound pipe 7, and multiple rear straight pipes 3 are internally connected to the spiral wound pipe 7.
[0021] In use, water flows through the first water pump 6 into the first guide device 13. The first guide device 13 guides the water flow into multiple front straight pipes 9 and the central collector pipe 10. The water flow enters the spiral winding pipe 7 through the multiple front straight pipes 9. The central collector pipe 7 can guide the water flow into the spiral winding pipe 7 through multiple first inner pipes 8 and second inner pipes 11. The water flow then enters the rear straight pipe 3 through the spiral winding pipe 7. The straight pipe 3 connects with the second guide device 4, and the water flow is then discharged by the second water pump 5.
[0022] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0024] 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 spiral wound tube heat exchanger for a heat pump evaporation system, comprising an outer tube body (1) and an inner tube body (12), characterized in that: Multiple spiral wound pipes (7) are arranged between the outer pipe body (1) and the inner pipe body (12). The front end of the spiral wound pipe (7) is connected to the front straight pipe (9), and the rear end of the spiral wound pipe (7) is connected to the rear straight pipe (3). A central flow collector (10) is arranged inside the inner pipe body (12). Multiple first inner pipes (8) and multiple second inner pipes (11) are arranged on the central flow collector (10). The front end of the central flow collector (10) is connected to the first flow guide device (13), and the rear end is connected to the second flow guide device (4). The multiple front straight pipes (9) are connected to the first flow guide device (13), and the multiple rear straight pipes (3) are connected to the second flow guide device (4). The first flow guide device (13) is connected to the first water pump (6), and the second flow guide device (4) is connected to the second water pump (5).
2. A spiral wound tube heat exchanger for a heat pump evaporation system according to claim 1, characterized in that: The central manifold (10) is connected in series with the first flow guiding device (13) and the second flow guiding device (4) via pipes.
3. A spiral wound tube heat exchanger for a heat pump evaporation system according to claim 1, characterized in that: The support frame (2) is set on the outer shell of the outer tube (1). The first flow guiding device (13) is connected to the first water pump (6) through a pipe, and the second flow guiding device (4) is connected to the second water pump (5) through a pipe.
4. A spiral wound tube heat exchanger for a heat pump evaporation system according to claim 1, characterized in that: Multiple front straight tubes (9) are internally connected to the spiral wound tube (7), and multiple rear straight tubes (3) are internally connected to the spiral wound tube (7).