An evaporator
By employing a two-support plate structure and a staggered outlet design in the evaporator, the problem of uneven coolant distribution is solved, achieving uniform coolant distribution, improving the evaporator's refrigeration efficiency and flow stability, and reducing processing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU LUQIAO SANXING EVAPORATOR CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-29
AI Technical Summary
In traditional evaporators with multiple parallel flow paths, the coolant distribution is uneven, resulting in poor heat dissipation and an inability to meet large cooling capacity requirements.
It adopts a two-support plate structure, with several heat dissipation fins and heat exchange pipes. The coolant is diverted through the liquid inlet pipe to form an "S"-shaped flow channel. The staggered liquid outlet and the combination of inclined and straight pipes are used to achieve uniform distribution of coolant.
It improves the evaporator's refrigeration efficiency, reduces flow resistance and processing costs, enhances flow stability, and simplifies the manufacturing process.
Smart Images
Figure CN224302380U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of evaporator technology, and specifically refers to an evaporator. Background Technology
[0002] The evaporator is a very important component among the four major refrigeration components. By installing an expansion valve at the inlet of the evaporator, the high-temperature and high-pressure liquid refrigerant is throttled through the small orifice of the expansion valve and becomes a low-temperature and low-pressure mist refrigerant. This refrigerant flows in the heat exchange tubes of the evaporator and absorbs heat, evaporating into a gaseous state, thereby achieving the purpose of lowering the temperature.
[0003] In traditional evaporator designs, to meet high cooling capacity requirements or optimize heat dissipation area distribution, a multi-parallel flow path structure is often adopted. This involves distributing the refrigerant into four or more parallel flow paths using a liquid distribution device. However, if the expansion valve distributes the coolant into more than four flow paths, uneven distribution can easily occur. This results in an inability to evenly distribute the coolant within subsequent flow paths, leading to poor heat dissipation performance in large multi-flow-path evaporators that fail to meet actual needs. Utility Model Content
[0004] The purpose of this invention is to provide an evaporator that allows the coolant in the evaporator to first undergo liquid-liquid evaporation, then merge and further separate for subsequent evaporation, and can more evenly distribute the coolant in the pipeline to improve refrigeration efficiency.
[0005] The purpose of this utility model is achieved as follows:
[0006] An evaporator includes two support plates, with a plurality of parallel heat dissipation fins disposed between the two support plates. Four or more sets of heat exchange pipes penetrating the heat dissipation fins are disposed between the two support plates. Each support plate has a plurality of liquid inlets and a plurality of liquid outlets, with each liquid inlet connected to one end of a plurality of heat exchange pipes and each liquid outlet connected to the other end of a plurality of heat exchange pipes. A liquid collecting seat connected to a return pipe is disposed on the support plate and is connected to the plurality of liquid outlets. Two sets of heat dissipation pipes penetrating the heat dissipation fins are disposed between the two support plates, with the ends of the two heat dissipation pipes extending beyond the outer ends of the two support plates. A liquid inlet pipe is disposed on one side of each support plate, with the end of the liquid inlet pipe connected to the ends of the two heat dissipation pipes via a front distribution pipe. The other ends of the two heat dissipation pipes are connected to a vapor-liquid pipe via a liquid collecting pipe, and the end of the vapor-liquid pipe is connected to the plurality of liquid inlets via a rear distribution pipe.
[0007] The present invention is further configured such that the support plate includes a left support plate and a right support plate, the heat exchange pipeline includes a heat dissipation pipe that passes through the left support plate, the right support plate and a number of heat dissipation fins, the outer end of the heat dissipation pipe extending out of the left support plate or the right support plate is connected to another heat dissipation pipe through a connecting bend, and the heat exchange pipeline forms an "S" shaped flow channel.
[0008] The present invention is further configured such that the number of heat exchange pipelines is eight sets, and the liquid outlets are arranged in two rows, with four sets of liquid outlets in each row, and the liquid outlets in adjacent upper and lower rows are staggered left and right.
[0009] The present invention is further configured such that the connecting bend includes an inclined pipe and a straight pipe connected to the corresponding heat dissipation pipe ends.
[0010] The present invention is further configured such that a pressure indicator is connected to the side wall of the return pipe.
[0011] The outstanding and beneficial technical effects of this utility model compared to the prior art are:
[0012] 1. The evaporator provided by this utility model utilizes the liquid inlet pipe to split into two sets of heat dissipation pipes and pass through the heat dissipation fins, so as to achieve priority evaporation of the coolant in the liquid inlet pipe, and reduce the liquid coolant content by merging the coolant entering the vapor-liquid pipe, thereby achieving staged distribution of refrigerant. Then, through the liquid distribution pipe, it can achieve uniform distribution of the refrigeration machine, thereby greatly improving the evaporation efficiency.
[0013] 2. In this utility model, the heat exchange pipeline is formed by connecting the ends of the heat dissipation pipes that pass through the left support plate, the right support plate, and several heat dissipation fins through the connecting bend pipes, which provides convenience for subsequent pipeline installation and is more convenient to manufacture.
[0014] 3. This utility model further adopts staggered distribution of liquid outlets to avoid pressure interference when adjacent pipelines backflow, thereby improving the overall flow stability.
[0015] 4. This utility model further adopts a combination design of inclined tube and straight tube to reduce the flow resistance at the bend and avoid local pressure loss. At the same time, the structure is simple, which is convenient for mass production and reduces processing costs. Attached Figure Description
[0016] Figure 1 This is the front view of this utility model;
[0017] Figure 2 This is the right view of this utility model;
[0018] Figure 3 This is the left view of this utility model;
[0019] Figure label:
[0020] 1-Support plate; 10-Heat dissipation fins; 11-Inlet; 12-Outlet; 13-Left support tube; 14-Right support plate; 15-Heat dissipation tube;
[0021] 2-Heat exchange piping;
[0022] 3-Collection base; 30-Return pipe; 31-Pressure indicator;
[0023] 4-Heat dissipation piping;
[0024] 5-Inlet pipe; 50-Pre-dispensing pipe;
[0025] 6-Vacuum-Liquid Pipe; 60-Collection Pipe; 61-Rear Distributor Pipe;
[0026] 7-Connecting bend; 70-Inclined pipe; 71-Straight pipe. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1 — Figure 3 :
[0028] An evaporator includes two support plates 1, with a plurality of parallel heat dissipation fins 10 disposed between the two support plates 1. Four or more sets of heat exchange pipes 2 are disposed between the two support plates 1 and penetrate the heat dissipation fins 10. Each support plate 1 has a plurality of liquid inlets 11 and a plurality of liquid outlets 12, with each liquid inlet 11 connected to one end of a plurality of heat exchange pipes 2 and each liquid outlet 12 connected to the other end of a plurality of heat exchange pipes 2. A liquid collection seat connected to a return pipe 30 is disposed on each support plate 1. 3. The liquid collection base 3 is connected to several liquid outlets 12. Two sets of heat dissipation pipes 4 are provided between the two support plates 1, which pass through several heat dissipation fins 10. The ends of the two heat dissipation pipes 4 extend out of the outer ends of the two support plates 1. A liquid inlet pipe 5 is provided on one side of the support plate 1. The end of the liquid inlet pipe 5 is connected to the end of the two heat dissipation pipes 4 through the front liquid distribution pipe 50. The other end of the two heat dissipation pipes 4 is connected to the vapor-liquid pipe 6 through the liquid collection pipe 60. The end of the vapor-liquid pipe 6 is connected to several liquid inlets 11 through the rear liquid distribution pipe 61.
[0029] During implementation, the inlet pipe 5 is split into two via the front distributor pipe 50, and the coolant enters the two heat dissipation pipes 4 for preferential evaporation. The coolant that evaporates first contains more coolant gas, which then merges in the collector pipe 60 and enters the gas-liquid pipe 6. The rear distributor pipe 61 connects to each inlet port 11, at which point the coolant is a mixture of gas and liquid states, thus allowing the coolant entering the heat exchange pipes to be more evenly distributed and improving cooling efficiency.
[0030] Preferably, the support plate 1 includes a left support plate 13 and a right support plate 14, and the heat exchange pipeline 2 includes a heat dissipation pipe 15 that passes through the left support plate 13, the right support plate 14 and a plurality of heat dissipation fins 10. The outer end of the heat dissipation pipe 15 extending out of the left support plate 13 or the right support plate 14 is connected to another heat dissipation pipe 15 through a connecting bend 7, and the heat exchange pipeline 2 forms an "S" shaped flow channel.
[0031] In the above structure, the heat exchange pipeline and the heat dissipation pipeline are both heat dissipation pipes 15 that pass through the left support plate 13, the right support plate 14 and several heat dissipation fins 10. The heat dissipation pipes 15 are pre-installed, and the heat exchange pipeline and the heat dissipation pipeline are connected at the end of the heat dissipation pipe 15 by a connecting bend 7, which realizes the formation of each pipeline and provides greater convenience for installation.
[0032] In addition, both the liquid inlet and outlet are located on the left support plate 13, and both the front and rear liquid distribution pipes are located on one side of the left support plate 13. That is, the heat exchange pipes and heat dissipation pipes penetrate the heat dissipation fins multiple times and are ultimately located on this side of the left support plate 13, facilitating the assembly, debugging, and use of the evaporator.
[0033] Preferably, the number of heat exchange pipelines 2 is eight sets, and the liquid outlets 12 are arranged in two rows, with four sets of liquid outlets 12 in each row, and the liquid outlets 12 in adjacent upper and lower rows are staggered left and right.
[0034] During implementation, staggered outlets are used to avoid pressure interference during backflow from adjacent pipelines, thereby improving overall flow stability.
[0035] Preferably, the connecting bend 7 includes an inclined pipe 70 and a straight pipe 71 connected to the corresponding ends of the heat dissipation pipe 15. The combination design of the inclined pipe and the straight pipe reduces the flow resistance at the bend, avoids local pressure loss, and has a simple structure, which is convenient for mass production and reduces processing costs.
[0036] Preferably, a pressure indicator 31 is connected to the side wall of the return pipe 30 for viewing the coolant pressure in the return pipe.
[0037] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.
Claims
1. An evaporator comprising two support plates (1) with a plurality of parallel heat dissipation fins (10) disposed between the two support plates (1), characterized in that, Four or more sets of heat exchange pipes (2) are provided between the two support plates (1) and penetrate the heat dissipation fins (10). The support plates (1) are provided with several liquid inlets (11) and several liquid outlets (12). The liquid inlets (11) are connected to one end of the heat exchange pipes (2), and the liquid outlets (12) are connected to the other end of the heat exchange pipes (2). The support plates (1) are provided with a liquid collection seat (3) connected to a return pipe (30), and the liquid collection seat (3) is connected to the liquid outlets (12). Two sets of heat dissipation pipes (4) are provided between the support plates (1) and pass through several heat dissipation fins (10). The ends of the two heat dissipation pipes (4) extend out of the outer ends of the two support plates (1). A liquid inlet pipe (5) is provided on one side of the support plate (1). The end of the liquid inlet pipe (5) is connected to the end of the two heat dissipation pipes (4) through the front liquid distribution pipe (50). The other end of the two heat dissipation pipes (4) is connected to a vapor-liquid pipe (6) through a liquid collection pipe (60). The end of the vapor-liquid pipe (6) is connected to several liquid inlets (11) through the rear liquid distribution pipe (61).
2. An evaporator according to claim 1, characterized in that, The support plate (1) includes a left support plate (13) and a right support plate (14). The heat exchange pipeline (2) includes a heat dissipation pipe (15) that passes through the left support plate (13), the right support plate (14) and several heat dissipation fins (10). The outer end of the heat dissipation pipe (15) extending out of the left support plate (13) or the right support plate (14) is connected to another heat dissipation pipe (15) through a connecting bend (7). The heat exchange pipeline (2) forms an "S" shaped flow channel.
3. An evaporator according to claim 2, characterized in that, The number of heat exchange pipelines (2) is eight, and the liquid outlets (12) are arranged in two rows, with four sets of liquid outlets (12) in each row. The liquid outlets (12) in the adjacent upper and lower rows are staggered.
4. An evaporator according to claim 2, characterized in that, The connecting bend (7) includes an inclined pipe (70) and a straight pipe (71) connected to the end of the corresponding heat dissipation pipe (15).
5. An evaporator according to claim 1, characterized in that, A pressure indicator (31) is connected to the side wall of the return pipe (30).