Evaporator and heat pump system

Abstract

The utility model belongs to the technical field of electric appliances, and particularly relates to an evaporator and a heat pump system. The evaporator comprises a shell and multiple sets of circulation pipelines, the multiple sets of circulation pipelines are connected with the shell, each set of circulation pipeline comprises a heat exchange pipeline, a liquid inlet pipe and an air outlet pipe, the heat exchange pipelines communicate between the liquid inlet pipes and the air outlet pipes and are arranged in the shell, and the liquid inlet pipes and the air outlet pipes are located outside the shell; the liquid inlet pipes are arranged in the middle of the shell, and the air outlet pipes are arranged at the two ends of the shell in the vertical direction respectively. According to the evaporator and the heat pump system, the heat exchange efficiency of the refrigerant is improved.

Description

Technical Field

[0001] This application belongs to the field of electrical technology, specifically relating to an evaporator and a heat pump system. Background Technology

[0002] A heat pump water heater is a device that uses heat pump technology to heat water. The working principle of a heat pump water heater is to extract low-temperature heat energy from environmental heat sources (such as water and air) through components such as compressor, evaporator, heat exchanger, insulated water tank and electronic automatic controller, and then convert it into high-temperature heat energy and release it into the circulating medium (such as water and air) as a high-temperature heat source output.

[0003] The evaporator of the heat pump water heater in the related technology includes a shell and a heat exchange pipe installed inside the shell. One end of the heat exchange pipe is provided with a liquid inlet pipe and the other end is provided with a gas outlet pipe. Both the liquid inlet pipe and the gas outlet pipe are located outside the shell. Low-temperature refrigerant enters the heat exchange pipe through the liquid inlet pipe and exchanges heat with the outside air, thereby causing the refrigerant to evaporate and absorb heat, so that the refrigerant forms a low-temperature, low-pressure gas and is discharged from the gas outlet pipe.

[0004] However, when the heat pump water heater system is operating under high load, the refrigerant flows through a single heat exchange pipe, which may lead to uneven flow distribution, causing some of the refrigerant to overheat and thus reducing the heat exchange efficiency of the refrigerant. Utility Model Content

[0005] This application provides an evaporator and heat pump system to solve the technical problem in the related art where the refrigerant flows in a single heat exchange pipe in the evaporator, thereby reducing the refrigerant heat exchange efficiency.

[0006] On one hand, this application provides an evaporator, including a shell and multiple sets of circulation pipelines. The multiple sets of circulation pipelines are all connected to the shell. Each set of circulation pipelines includes a heat exchange pipeline, a liquid inlet pipe and an air outlet pipe. The heat exchange pipeline is connected between the liquid inlet pipe and the air outlet pipe. The heat exchange pipeline is disposed inside the shell. The liquid inlet pipe and the air outlet pipe are both located outside the shell. Multiple liquid inlet pipes are disposed in the middle of the shell, and multiple air outlet pipes are respectively disposed at both ends of the shell in the vertical direction.

[0007] In some embodiments, the plurality of liquid inlet pipes and the plurality of gas outlet pipes are all disposed on the same side of the housing.

[0008] In some embodiments, an inlet connector is further included, which is used to connect the plurality of inlet pipes.

[0009] In some embodiments, the liquid inlet connector includes a liquid inlet branch pipe, a first connector, and a liquid inlet connecting pipe. The liquid inlet branch pipe is provided on each of the plurality of liquid inlet pipes. The ends of the plurality of liquid inlet branch pipes away from the liquid inlet pipes are connected to one end of the first connector, and the liquid inlet connecting pipe is connected to the other end of the first connector.

[0010] In some embodiments, the plurality of liquid inlet diversion pipes are arranged in an "L" shape.

[0011] In some embodiments, an exhaust connector is further included for connecting the plurality of exhaust pipes.

[0012] In some embodiments, the vent connector includes a vent splitter pipe, a second connector, and a vent connecting pipe. The vent splitter pipe is connected to a plurality of vent pipes. The vent splitter pipe is connected to one end of the second connector, and the vent connecting pipe is connected to the other end of the second connector.

[0013] In some embodiments, the plurality of the exhaust manifolds are arranged in an "L" shape, and the exhaust manifolds at the top of the housing and the exhaust manifolds at the bottom of the housing are arranged symmetrically.

[0014] In some embodiments, the heat exchange pipe includes a plurality of pipe bodies connected end to end, and all the pipe bodies are arranged horizontally within the housing.

[0015] On the other hand, this application provides a heat pump system, including a heat pump system body, wherein the heat pump system body includes the evaporator.

[0016] This application provides an evaporator and a heat pump system. The evaporator provided by this application, by employing multiple sets of circulation pipes, can more evenly distribute the refrigerant flow, reduce localized hot spots, thereby improving the heat exchange efficiency of the evaporator and indirectly improving the heating efficiency of the heat pump water heater. Under different operating conditions, the multiple sets of circulation pipes allow for more flexible adjustment of the refrigerant flow, ensuring stable operation of the entire heat pump system under various loads. In low-temperature environments, the multiple sets of circulation pipes can reduce the refrigerant residence time in the pipes, lowering the risk of freezing, especially in winter or cold regions. The use of multiple sets of circulation pipes improves the heat exchange efficiency of the heat pump water heater. Efficiency allows heat pump systems to achieve the same heating effect with lower energy consumption, thereby reducing operating costs. The setup of multiple circulation pipelines can utilize refrigerant more effectively, reduce ineffective refrigerant circulation in the system, and improve refrigerant utilization. When the heat pump system operates in a low-temperature environment, the evaporator may experience frost. In this case, by switching the refrigerant flow direction, the refrigerant flows in along the outlet pipe and is discharged along the inlet pipe through the heat exchange pipe. The high-temperature refrigerant can defrost the evaporator, and the high-temperature refrigerant can defrost simultaneously from both ends of the shell in the vertical direction towards the middle of the shell, thereby making the evaporator defrost more thoroughly and improving the defrosting efficiency of the evaporator. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 This is a schematic diagram of the structure of the evaporator provided in the embodiments of this application;

[0019] Figure 2 for Figure 1 A schematic diagram of the circulation pipeline, liquid inlet connector, and gas outlet connector in the diagram;

[0020] Figure 3 for Figure 1 Schematic diagram of the heat exchange pipeline in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of a heat pump system provided in an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100. Shell;

[0024] 200. Circulation pipeline; 210. Heat exchange pipeline; 211. Pipe body; 220. Liquid inlet pipe; 230. Gas outlet pipe;

[0025] 300, Liquid inlet connector; 310, Liquid inlet branch pipe; 311, First connecting pipe; 312, Second connecting pipe; 320, First connector; 330, Liquid inlet connector;

[0026] 400. Exhaust connector; 410. Exhaust branch pipe; 411. Third connecting pipe; 412. Fourth connecting pipe; 413. Fifth connecting pipe; 420. Second connector; 430. Exhaust connector;

[0027] 500. Heat pump system body; 510. Compressor; 520. Heat exchanger; 530. Valve body.

[0028] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0030] The evaporator of the heat pump water heater in the related technology includes a shell and a heat exchange pipe installed inside the shell. One end of the heat exchange pipe is provided with a liquid inlet pipe and the other end is provided with a gas outlet pipe. Both the liquid inlet pipe and the gas outlet pipe are located outside the shell. Low-temperature refrigerant enters the heat exchange pipe through the liquid inlet pipe and exchanges heat with the outside air, thereby causing the refrigerant to evaporate and absorb heat, so that the refrigerant forms a low-temperature, low-pressure gas and is discharged from the gas outlet pipe.

[0031] However, when the demand for hot water is high, such as in winter or when a large number of users use hot water simultaneously, the heat pump water heater system needs to provide more heat, leading to an increased load. In this case, the refrigerant flows through a single heat exchange pipe. If the length and diameter of the pipe are inconsistent, the flow rate and distribution of the refrigerant in the pipe may be uneven. In this case, the refrigerant may have more pressure loss in the longer or narrower pipe sections, which may lead to uneven flow distribution. This causes some refrigerant to overheat due to slow flow rate, while some refrigerant to not undergo heat exchange due to fast flow rate, thereby reducing the heat exchange efficiency of the refrigerant.

[0032] To address the aforementioned technical problems, this application provides an evaporator and a heat pump system. The heat pump system delivers refrigerant to the inlet connecting pipe and then, through a first connector, distributes the refrigerant into two separate inlet branch pipes. This allows the refrigerant to enter the evaporator via two separate heat exchange pipes, shortening the length of a single heat exchange pipe. Furthermore, because the two inlet branch pipes have identical shapes, the refrigerant flows uniformly within both heat exchange pipes, maintaining the same flow velocity and improving the heat exchange efficiency of the refrigerant within the evaporator, thereby indirectly improving the heating efficiency of the heat pump system. After heat exchange within the two heat exchange pipes, the refrigerant is output along the outlet pipes at the top and bottom of the casing. It then converges in the outlet connecting pipe via the two outlet branch pipes and the second connector, and is delivered to other components of the heat pump system through the outlet connecting pipe. Because the two outlet branch pipes have identical shapes, the refrigerant maintains the same flow velocity within both outlet branch pipes, ensuring the same flow velocity in the outlet connecting pipe and indirectly improving the heating efficiency of the refrigerant. The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0033] Combination Figure 1 and Figure 2 An evaporator includes a shell 100 and multiple sets of circulation pipes 200. The multiple sets of circulation pipes 200 are all connected to the shell 100. Each set of circulation pipes 200 includes a heat exchange pipe 210, a liquid inlet pipe 220, and an exhaust pipe 230. The heat exchange pipe 210 is connected between the liquid inlet pipe 220 and the exhaust pipe 230. The heat exchange pipe 210 is located inside the shell 100. The liquid inlet pipe 220 and the exhaust pipe 230 are located outside the shell 100. The multiple liquid inlet pipes 220 are located in the middle of the shell 100, and the multiple exhaust pipes 230 are respectively located at both ends of the shell 100 in the vertical direction.

[0034] By adopting the above technical solution and using multiple sets of circulation pipes 200, the refrigerant flow can be distributed more evenly, reducing local hot spots and thus improving the heat exchange efficiency of the evaporator, indirectly improving the heating efficiency of the heat pump water heater. Under different operating conditions, the multiple sets of circulation pipes 200 can more flexibly adjust the refrigerant flow, ensuring stable operation of the entire heat pump system under various loads. In low-temperature environments, the multiple sets of circulation pipes 200 can reduce the refrigerant residence time in the pipes, lowering the risk of freezing, especially in winter or cold regions. Because the use of multiple sets of circulation pipes 200 improves the heat exchange efficiency of the heat pump water heater, the heat pump system can... Achieving the same heating effect with lower energy consumption reduces operating costs; the multiple sets of circulation pipes 200 can utilize refrigerant more effectively, reduce ineffective refrigerant circulation in the system, and improve refrigerant utilization; when the heat pump system is running in a low-temperature environment, the evaporator may experience frost. At this time, by switching the refrigerant flow direction, the refrigerant flows in along the outlet pipe 230 and is discharged along the inlet pipe 220 through the heat exchange pipe 210. The high-temperature refrigerant can defrost the evaporator, and the high-temperature refrigerant can defrost simultaneously from both ends of the shell 100 in the vertical direction toward the middle of the shell 100, thereby making the evaporator defrost more thoroughly and improving the defrosting efficiency of the evaporator.

[0035] Combination Figure 1 and Figure 2 Multiple liquid inlet pipes 220 and multiple air outlet pipes 230 are all located on the same side of the housing 100.

[0036] Combination Figure 1 and Figure 2 In this embodiment, the circulation pipeline 200 is provided in two sets. The liquid inlet pipe 220 of the two sets of circulation pipelines 200 is located in the middle of the housing 100, and the air outlet pipe 230 of the two sets of circulation pipelines 200 is located at both ends of the housing 100 in the vertical direction.

[0037] In this embodiment, the liquid inlet pipes 220 of the two sets of circulation pipes 200 are sequentially arranged in the middle of the housing 100 along the height direction of the housing 100. The upper liquid inlet pipe 220 is connected to the air outlet pipe 230 at the top of the housing 100 through a heat exchange pipe 210, and the lower liquid inlet pipe 220 is connected to the air outlet pipe 230 at the bottom of the housing 100 through a heat exchange pipe 210. Both the liquid inlet pipe 220 and the air outlet pipe 230 are arranged in the horizontal direction.

[0038] By adopting the above technical solution, and by setting the liquid inlet pipe 220 and the gas outlet pipe 230 on the same side of the housing 100, it is convenient to connect the liquid inlet pipe 220 and the gas outlet pipe 230 to other components of the heat pump system. By setting two sets of circulation pipes 200, the refrigerant of one set of circulation pipes 200 can enter along the liquid inlet pipe 220 in the middle of the housing 100 and be discharged through the gas outlet pipe 230 at the top of the housing 100, while the refrigerant of the other set of circulation pipes 200 can enter along the liquid inlet pipe 220 in the middle of the housing 100 and be discharged through the gas outlet pipe 230 at the bottom of the housing 100. This makes the refrigerant distribution uniform, improves the heat exchange efficiency of the refrigerant, and thus indirectly improves the heating efficiency of the heat pump system.

[0039] Combination Figure 1 and Figure 2 The evaporator also includes a liquid inlet connector 300, which is used to connect multiple liquid inlet pipes 220.

[0040] By adopting the above technical solution and using the liquid inlet connector 300, the refrigerant can be uniformly delivered to the liquid inlet connector 300, and then diverted to the two liquid inlet pipes 220. This eliminates the need for numerous pipelines to deliver the refrigerant, thus simplifying the structure of the heat pump system and reducing its complexity. The use of fewer pipelines makes installation simpler and faster, reduces the points requiring maintenance inspection, lowers maintenance difficulty and workload, and means fewer leakage points, improving the system's sealing and reliability. Furthermore, the single-path flow of the refrigerant through the liquid inlet connector 300 ensures that the refrigerant flows consistently into the multiple sets of circulation pipes 200 and through the evaporator, helping to maintain uniform pressure and flow rate inside the evaporator.

[0041] Combination Figure 1 and Figure 2 The liquid inlet connector 300 includes a liquid inlet diversion pipe 310, a first connector 320, and a liquid inlet connecting pipe 330. Each of the multiple liquid inlet pipes 220 is provided with a liquid inlet diversion pipe 310. The ends of the multiple liquid inlet diversion pipes 310 away from the liquid inlet pipes 220 are connected to one end of the first connector 320, and the liquid inlet connecting pipe 330 is connected to the other end of the first connector 320.

[0042] In this embodiment, there are two liquid inlet diversion pipes 310, one first connector 320, and one liquid inlet connecting pipe 330. The two liquid inlet diversion pipes 310 are respectively connected to two liquid inlet pipes 220, and the two liquid inlet diversion pipes 310 are simultaneously connected to one end of the first connector 320. The liquid inlet connecting pipe 330 is arranged in a "U" shape.

[0043] By adopting the above technical solution, when the refrigerant flows into the liquid inlet connecting pipe 330, the refrigerant can flow through the first connector 320 and multiple liquid inlet branch pipes 310 into multiple liquid inlet pipes 220, thereby allowing the refrigerant to be diverted into the evaporator. The simple structure of the liquid inlet branch pipe 310, the first connector 320 and the liquid inlet connecting pipe 330 improves the diversion effect of the refrigerant. Furthermore, the arrangement of multiple liquid inlet branch pipes 310 and the first connector 320 ensures that the refrigerant in the liquid inlet connecting pipe 330 maintains the same flow rate when entering the multiple liquid inlet branch pipes 310, thereby making the refrigerant flow rate more uniform.

[0044] Combination Figure 1 and Figure 2 Multiple liquid inlet diversion pipes 310 are all arranged in an "L" shape.

[0045] In this embodiment, the "L"-shaped liquid inlet diversion pipe 310 includes a first connecting pipe 311 and a second connecting pipe 312. One end of the first connecting pipe 311 is connected to the liquid inlet pipe 220, and the other end is connected to one end of the second connecting pipe 312. The other end of the second connecting pipe 312 is connected to the first connector 320. The first connecting pipe 311 is arranged in a horizontal direction, and the second connecting pipe 312 is arranged in a vertical direction. The first connecting pipe 311 is perpendicular to the second connecting pipe 312, and the second connecting pipe 312 extends toward the bottom of the housing 100. The distance between the two first connecting pipes 311 is greater than the distance between the two second connecting pipes 312.

[0046] By adopting the above technical solution, and setting the shape of the multiple liquid inlet manifolds 310 to "L" shape, the refrigerant can maintain the same flow rate when flowing in the multiple liquid inlet manifolds 310, thereby maintaining the same flow rate when the refrigerant enters the evaporator, and maintaining the same flow rate of the refrigerant in the multiple sets of circulation pipes 200. Furthermore, it achieves uniform distribution of the refrigerant in the multiple sets of circulation pipes 200, thereby further improving the heat exchange efficiency of the refrigerant when flowing in the multiple circulation pipes 200, and thus indirectly improving the heating efficiency of the refrigerant.

[0047] Combination Figure 1 and Figure 2 The evaporator also includes an exhaust connector 400, which is used to connect multiple exhaust pipes 230.

[0048] By adopting the above technical solution and using the outlet connector 400, the refrigerant output from multiple outlet pipes 230 can be uniformly transported to the outlet connector 400, and then transported to other components of the heat pump system. This eliminates the need for numerous pipelines for refrigerant transport, simplifying the structure and reducing the complexity of the heat pump system. Fewer pipelines also make installation easier and faster, reducing the number of points requiring maintenance inspection, lowering maintenance difficulty and workload. Furthermore, fewer pipelines mean fewer leak points, improving the system's sealing and reliability. The single-path flow of the refrigerant through the outlet connector 400 ensures that the refrigerant flows consistently to other components of the heat pump system, helping to maintain uniform refrigerant pressure and flow rate within these components.

[0049] Combination Figure 1 and Figure 2 The air outlet connector 400 includes an air outlet diverter pipe 410, a second connector 420, and an air outlet connecting pipe 430. The multiple air outlet pipes 230 are all connected to the air outlet diverter pipe 410. The multiple air outlet diverter pipes 410 are all connected to one end of the second connector 420, and the air outlet connecting pipe 430 is connected to the other end of the second connector 420.

[0050] In this embodiment, there are two exhaust split pipes 410, which are respectively connected to two exhaust pipes 230. There is one second connector 420, and both exhaust split pipes 410 are simultaneously connected to one end of the second connector 420. The exhaust connecting pipe 430 is arranged in an inverted "U" shape.

[0051] By adopting the above technical solution, when the refrigerant flows into the multiple outlet diversion pipes 410, the refrigerant can flow into the outlet connecting pipe 430 through the second connector 420, so that the refrigerant that has undergone heat exchange can be uniformly transported to other components of the heat pump system. The simple structure of the outlet diversion pipes 410, the second connector 420 and the outlet connecting pipe 430 improves the refrigerant transport effect. Furthermore, the arrangement of multiple outlet diversion pipes 410 and the second connector 420 ensures that the refrigerant entering the outlet connecting pipe 430 maintains the same flow rate, thereby making the refrigerant flow rate more uniform.

[0052] Combination Figure 1 and Figure 2 Multiple air outlet split pipes 410 are arranged in an "L" shape, and the air outlet split pipes 410 at the top of the housing 100 and the air outlet split pipes 410 at the bottom of the housing 100 are arranged symmetrically.

[0053] In this embodiment, the lower gas outlet diversion pipe 410 includes a third connecting pipe 411 and a fourth connecting pipe 412. One end of the third connecting pipe 411 is connected to the gas outlet pipe 230, and the other end is connected to one end of the fourth connecting pipe 412. The other end of the fourth connecting pipe 412 is connected to the second connector 420. The third connecting pipe 411 of the lower gas outlet diversion pipe 410 is arranged in a horizontal direction, and the fourth connecting pipe 412 of the lower gas outlet diversion pipe 410 extends in a vertical direction toward the liquid inlet pipe 220.

[0054] In this embodiment, the upper gas outlet diversion pipe 410 also includes a third connecting pipe 411 and a fourth connecting pipe 412. One end of the third connecting pipe 411 is connected to the gas outlet pipe 230, and the other end is connected to one end of the fourth connecting pipe 412. The other end of the fourth connecting pipe 412 is connected to a fifth connecting pipe 413, and the other end of the fifth connecting pipe 413 is connected to the second connector 420. The third connecting pipe 411 of the upper gas outlet diversion pipe 410 is arranged in a horizontal direction, the fourth connecting pipe 412 of the upper gas outlet diversion pipe 410 extends in a vertical direction toward the liquid inlet pipe 220, and the fifth connecting pipe 413 is arranged in an arc shape. The concave part of the arc-shaped fifth connecting pipe 413 is arranged toward the position of the gas outlet pipe 230.

[0055] By adopting the above technical solution, by setting the shape of multiple outlet split pipes 410 to "L" shape, the refrigerant can maintain the same flow rate when flowing in multiple outlet split pipes 410, thereby ensuring that the refrigerant maintains the same flow rate when entering other components of the heat pump system, and further improving the heating efficiency of the refrigerant after heat exchange.

[0056] Combination Figure 1 and Figure 3 The heat exchange pipe 210 includes multiple pipe bodies 211, which are connected end to end, and all multiple pipe bodies 211 are arranged horizontally inside the shell 100.

[0057] In this embodiment, the number of pipes 211 can be adjusted as needed; adjacent pipes 211 are connected end to end by bends.

[0058] By adopting the above technical solution, multiple tubes 211 are arranged horizontally inside the shell 100, making them arranged in a straight line. This makes the airflow inside the evaporator more uniform, further improving the heat exchange efficiency of the refrigerant and thus improving the utilization efficiency of the evaporator. Furthermore, arranging multiple tubes 211 horizontally facilitates the processing of the multiple tubes 211 and improves the production efficiency of the heat exchange pipes 210.

[0059] Combination Figures 1 to 4A heat pump system includes a heat pump system body 500, which includes an evaporator according to any of the above embodiments.

[0060] The specific structure of the evaporator has been described in detail in the above embodiments, and will not be repeated here.

[0061] In this embodiment, the heat pump system is a heat pump water heater; in other embodiments, the heat pump system may also be a heat pump air conditioner.

[0062] In this embodiment, the heat pump system body 500 also includes a compressor 510, a heat exchanger 520, and a valve body 530. The evaporator, compressor 510, valve body 530, and heat exchanger 520 are interconnected. See [reference needed] Figure 4 As indicated by the solid arrow, low-temperature, low-pressure liquid refrigerant enters the evaporator. In the evaporator, the refrigerant absorbs heat from the surrounding environment and evaporates into a low-temperature, low-pressure gas. This low-temperature, low-pressure refrigerant gas is drawn into the compressor 510. The compressor 510 increases the pressure and temperature of the refrigerant through mechanical compression, transforming it into a high-temperature, high-pressure gas. The compressed high-temperature, high-pressure refrigerant gas is then transported to the heat exchanger 520, which heats the water in the water tank. (See also...) Figure 4 The dotted arrows indicate that when the heat pump system is operating in a low-temperature environment, the evaporator may experience frost. In this case, by switching the flow direction of the refrigerant, the refrigerant flows in along the outlet pipe 230 and is discharged through the heat exchange pipe 210 along the liquid inlet pipe 220. The high-temperature refrigerant can defrost the evaporator, and the high-temperature refrigerant can simultaneously defrost from the top and bottom of the shell 100 towards the middle of the shell 100, thereby making the defrosting of the evaporator more thorough and improving the defrosting efficiency of the evaporator.

[0063] The heat pump system delivers refrigerant to the inlet connector 330, and then splits it into two streams via the first connector 320, delivering the refrigerant to two separate inlet branch pipes 310. This allows the refrigerant to enter the evaporator through the heat exchange pipes 210 in two separate streams, shortening the length of each individual heat exchange pipe 210. Furthermore, because the two inlet branch pipes 310 are identical in shape, the refrigerant flows uniformly within both heat exchange pipes 210, maintaining the same flow velocity. This improves the heat exchange efficiency of the refrigerant within the evaporator, thereby indirectly enhancing the heat pump system's performance. The system's heating efficiency is improved. After the refrigerant completes heat exchange in the two heat exchange pipes 210, it can be output along the outlet pipes 230 at the top and bottom of the shell 100, and converge in the outlet connecting pipe 430 through the two outlet branch pipes 410 and the second connector 420. It is then transported to other components of the heat pump system through the outlet connecting pipe 430. Because the two outlet branch pipes 410 have the same shape, the refrigerant maintains the same flow rate in the two outlet branch pipes 410, thereby ensuring that the refrigerant in the outlet connecting pipe 430 has the same flow rate, which indirectly improves the heating efficiency of the refrigerant.

[0064] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An evaporator, characterized in that, The device includes a housing (100) and multiple sets of circulation pipes (200). The multiple sets of circulation pipes (200) are all connected to the housing (100). Each set of circulation pipes (200) includes a heat exchange pipe (210), a liquid inlet pipe (220), and an air outlet pipe (230). The heat exchange pipe (210) is connected between the liquid inlet pipe (220) and the air outlet pipe (230). The heat exchange pipe (210) is located inside the housing (100). The liquid inlet pipe (220) and the air outlet pipe (230) are both located outside the housing (100). Multiple liquid inlet pipes (220) are located in the middle of the housing (100), and multiple air outlet pipes (230) are respectively located at both ends of the housing (100) in the vertical direction.

2. The evaporator according to claim 1, characterized in that, The plurality of liquid inlet pipes (220) and the plurality of gas outlet pipes (230) are all disposed on the same side of the housing (100).

3. The evaporator according to claim 1, characterized in that, It also includes a liquid inlet connector (300) for connecting the plurality of liquid inlet pipes (220).

4. The evaporator according to claim 3, characterized in that, The liquid inlet connector (300) includes a liquid inlet branch pipe (310), a first connector (320), and a liquid inlet connecting pipe (330). The liquid inlet branch pipe (310) is provided on each of the multiple liquid inlet pipes (220). The ends of the multiple liquid inlet branch pipes (310) away from the liquid inlet pipes (220) are connected to one end of the first connector (320), and the liquid inlet connecting pipe (330) is connected to the other end of the first connector (320).

5. The evaporator according to claim 4, characterized in that, All of the aforementioned liquid inlet diversion pipes (310) are arranged in an "L" shape.

6. The evaporator according to any one of claims 1-5, characterized in that, It also includes an exhaust connector (400) for connecting the plurality of exhaust pipes (230).

7. The evaporator according to claim 6, characterized in that, The air outlet connector (400) includes an air outlet splitter pipe (410), a second connector (420), and an air outlet connecting pipe (430). The multiple air outlet pipes (230) are all connected to the air outlet splitter pipe (410). The multiple air outlet splitter pipes (410) are all connected to one end of the second connector (420), and the air outlet connecting pipe (430) is connected to the other end of the second connector (420).

8. The evaporator according to claim 7, characterized in that, The multiple exhaust pipes (410) are all arranged in an "L" shape, and the exhaust pipes (410) at the top of the housing (100) and the exhaust pipes (410) at the bottom of the housing (100) are arranged symmetrically.

9. The evaporator according to any one of claims 1-5, characterized in that, The heat exchange pipe (210) includes multiple pipe bodies (211), which are connected end to end, and all multiple pipe bodies (211) are arranged horizontally inside the shell (100).

10. A heat pump system, characterized in that, It includes a heat pump system body (500), which includes an evaporator as described in any one of claims 1-9.

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