Water-cooled heat pump engineering unit

Abstract

The utility model belongs to water cooling heat exchange equipment technical field, concretely relates to a water cooling heat pump engineering unit. Including evaporimeter, evaporimeter includes evaporimeter cylinder, heat exchange pipe group and baffle group, baffle group and heat exchange pipe group parallelly set up, baffle group interval transversely between heat exchange pipe group and evaporimeter cylinder between the clearance of clearance and evaporimeter cylinder, condenser includes condensing cylinder, condensing pipe group and oil separation device, and oil separation device sets up on condensing pipe group top in condensing cylinder inside, two liquid storage components are arranged respectively in evaporimeter and condenser bottom, and the liquid supply pipeline is connected between two liquid storage components. The utility model is used to solve the problem that the gas-liquid uprush is easy to appear in heat pump unit. Through the utilization baffle group between evaporimeter pipe group clearance is blocked, evaporimeter pipe group and evaporimeter cylinder between the clearance is blocked, makes in evaporimeter overheat gas uprush, is blocked by baffle group, avoids the liquid gas into compressor.

Description

Technical Field

[0001] This utility model belongs to the technical field of water-cooled heat exchange equipment, specifically relating to a water-cooled heat pump engineering unit. Background Technology

[0002] A heat pump unit is a multi-functional unit capable of providing both air conditioning, heating, and cooling. Its working principle is based on the thermodynamic principles of heat exchange and compressed air. It utilizes low-grade heat energy found in nature and converts it into high-grade heat energy, thus achieving energy balance and making it a highly energy-efficient device. Water-cooled units are mainly used in areas with relatively abundant water resources. They operate stably, and in some large-scale facilities, water-cooled units are efficiently managed through centralized machine rooms, reducing maintenance complexity.

[0003] In some economical heat pump units, the number of heat exchange tubes is reduced, resulting in a decrease in the overall energy efficiency ratio. When the unit operates under overload for a long time, it will inevitably generate a lot of heat. When it accumulates to a certain extent, it can easily cause violent boiling and turbulence inside the evaporator, resulting in liquid evaporation. This causes the gas and liquid to surge upwards and enter the subsequent compressor, affecting subsequent heat exchange. Utility Model Content

[0004] To address the shortcomings of existing technologies, a water-cooled heat pump engineering unit is provided to solve the problem of gas-liquid backflow that easily occurs in heat pump units.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A water-cooled heat pump engineering unit, comprising:

[0006] An evaporator includes an evaporation cylinder, a heat exchange tube assembly, and an anti-impact plate assembly. The heat exchange tube assembly is disposed inside the evaporation cylinder, and the anti-impact plate assembly is disposed parallel to the heat exchange tube assembly. The anti-impact plate assembly is also spaced horizontally in the gaps between the heat exchange tube assemblies and in the gaps between the heat exchange tube assemblies and the evaporation cylinder.

[0007] A condenser; it includes a condenser cylinder, a condenser tube assembly, and an oil separator, wherein the condenser tube assembly is disposed inside the condenser cylinder, and the oil separator is disposed above the condenser tube assembly inside the condenser cylinder;

[0008] At least one compressor, the air inlet of which is connected to the air outlet of the evaporator, and the air outlet of which is connected to the oil separator;

[0009] Two liquid storage components are respectively disposed at the bottom of the evaporator and the condenser, and a liquid supply pipeline is connected between the two liquid storage components.

[0010] Compared with existing technologies, the above technical solutions have the following beneficial effects:

[0011] By installing anti-impact plate assemblies inside the evaporator cylinder, the gaps between the evaporator tube assemblies and between the evaporator tube assemblies and the evaporator cylinder are blocked. This ensures that when superheated gas rushes upward in the evaporator, it is promptly blocked by the anti-impact plate assemblies, preventing liquid-laden gas from entering the subsequent compressor and affecting subsequent heat exchange. The oil separator is connected to the compressor exhaust port to separate oil and gas. At the same time, the oil separator is located inside the condenser to prevent excessive pressure drop at the compressor exhaust port, which would affect energy efficiency.

[0012] Based on the above technical solution, the embodiments of this application can be further improved as follows:

[0013] In one embodiment, the anti-impact plate assembly includes:

[0014] A liquid equalization plate is disposed at the bottom of the evaporation cylinder, covering the liquid inlet of the evaporation cylinder, and the liquid equalization plate is provided with several through holes;

[0015] A plurality of first anti-impact plates are disposed on the inner wall of the evaporator cylinder, and the plurality of first anti-impact plates are spaced apart in the rising channel formed between the heat exchange tube group and the evaporator cylinder;

[0016] Several second anti-impact plates are spaced apart in the rising channel formed between the heat exchange tube groups, and are spaced apart from the liquid equalization plate.

[0017] Setting up a liquid equalization plate can serve as the first step to prevent gas and liquid from rushing upwards. Then, in the heat exchange tube group area where the gaps are relatively large and an upward channel is formed, a first anti-rush plate and a second anti-rush plate are set up to further prevent direct contact between the heat exchange tube group and the gas and liquid from rushing upwards. Setting up multiple anti-rush plates can improve the gas-liquid separation effect.

[0018] In one embodiment, a suction baffle is further included, which is located inside the evaporation cylinder and is spaced apart from the evaporator outlet.

[0019] By installing a suction baffle below the evaporator's outlet, the suction baffle further blocks the subsequent upward flow of gas and liquid. The liquid impacts the surface of the suction baffle and forms droplets that fall off, while the gas continues to rise and enters the compressor through the gap between the gas and the outlet, thus achieving gas-liquid separation and preventing liquid from entering the compressor.

[0020] In one embodiment, the condenser tube assembly includes:

[0021] Condenser tube racks are spaced apart along the length of the condenser cylinder;

[0022] The condenser tube is threaded through and fixed on the condenser tube rack;

[0023] Several liquid guide plates are arranged at intervals between the condenser tubes. The liquid guide plates are inclined, and a flow channel connecting the bottom of the condenser tube is formed between the lower end of the liquid guide plate and the condenser body.

[0024] By installing a liquid guide plate below the condenser tube, the condensate droplets can be guided to the inner wall of the condenser cylinder after falling onto the guide plate and then slide down into the cylinder, thus avoiding the formation of a liquid film on the surface of the condenser tube that would affect heat exchange.

[0025] In one embodiment, the liquid storage assembly includes:

[0026] The liquid storage tank is connected to the bottom of the condenser cylinder or evaporator cylinder;

[0027] Several connecting pipes are connected to the side wall of the liquid storage tank, and the other end of the connecting pipes is connected to the liquid supply pipeline;

[0028] An anti-vortex plate is vertically installed in the liquid storage tank.

[0029] In one embodiment, the liquid supply line includes:

[0030] An electronic expansion valve is connected to the other end of the connecting pipe near the evaporator;

[0031] The filter bucket is connected to the other end of the electronic expansion valve;

[0032] A two-way ball valve, one end of which is connected to the other end of the filter barrel, and the other end of which is connected to the connecting pipe near the condenser.

[0033] In one embodiment, it further includes an oil return pipe disposed outside the condenser, the oil return pipe being connected to the lowest point inside the oil separator;

[0034] The oil return pipe is also connected to a main oil return assembly, the other end of which is connected to the air inlet of the compressor.

[0035] The oil return pipe is used to temporarily store the oil separated in the oil separator, and the main oil return assembly is used to extract the oil from the oil return pipe and send it to the compressor for reuse.

[0036] In one embodiment, the main return oil assembly includes several pipelines and an angle valve, a dryer filter, a solenoid valve, and a sight glass connected in series from the pipelines. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of this utility model from a downward viewing angle.

[0039] Figure 2 for Figure 1 A frontal view of the structure.

[0040] Figure 3 for Figure 2 A schematic diagram of the right-side structure.

[0041] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0042] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure along the BB direction.

[0043] Figure 6 This is a cross-sectional view of the liquid storage component in this utility model.

[0044] Figure label:

[0045] 1. Evaporator; 2. Condenser; 3. Compressor; 4. Liquid receiver assembly; 5. Liquid supply line; 6. Oil return line; 7. Main oil return assembly;

[0046] 101. Evaporator shell; 102. Heat exchanger tube assembly; 103. Anti-impact plate assembly; 104. Rising channel;

[0047] 1031. Equalizing plate; 1032. First anti-impact plate; 1033. Second anti-impact plate; 1034. Suction baffle;

[0048] 201. Condenser shell; 202. Condenser tube assembly; 203. Oil separator;

[0049] 2021, Condenser rack; 2022, Condenser; 2023, Liquid guide plate;

[0050] 401. Liquid storage tank; 402. Connecting pipe; 403. Anti-vortex plate;

[0051] 501. Electronic expansion valve; 502. Filter barrel; 503. Two-way ball valve;

[0052] 701. Angle valve; 702. Dryer filter; 703. Solenoid valve; 704. Sight glass. Detailed Implementation

[0053] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0054] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0055] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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.

[0058] like Figure 1-6 As shown, the water-cooled heat pump engineering unit provided by this utility model includes: an evaporator 1, a condenser 2, at least one compressor 3, and two liquid storage components 4.

[0059] like Figure 5As shown, the evaporator 1 includes an evaporator cylinder 101, a heat exchange tube assembly 102, and an anti-impact plate assembly 103. The two ends of the evaporator cylinder 101 are sealed by tube sheets, and the bottom of the tube sheets is set at a target position such as the ground by foot plates. The heat exchange tube assembly 102 is disposed inside the evaporator cylinder 101, specifically located below the interior of the evaporator cylinder 101. The anti-impact plate assembly 103 is arranged parallel to the heat exchange tube assembly 102, and is horizontally spaced in the gaps between the heat exchange tube assemblies 102 and between the heat exchange tube assemblies 102 and the evaporator cylinder 101. The horizontally spaced anti-impact plate assembly 103 can block the liquid entrained in the upward-rushing gas, and the anti-impact plate assembly 103 is arranged in the gaps between the heat exchange tube assemblies 102 and between the heat exchange tube assemblies 102 and the evaporator cylinder 101.

[0060] The condenser 2 includes a condenser cylinder 201, a condenser tube assembly 202, and an oil separator 203. The condenser tube assembly 202 is located inside the condenser cylinder 201, and the oil separator 203 is located inside the condenser cylinder 201 above the condenser tube assembly 202. The oil separator 203 is connected to the exhaust port of the compressor 3 and can separate oil and gas. At the same time, the oil separator 203 is located inside the condenser 2 to avoid excessive pressure drop at the exhaust port of the compressor 3, which would affect energy efficiency.

[0061] In this embodiment, two compressors 3 are provided. The two compressors 3 are respectively installed on the top of the condenser 2 and the evaporator 1. The air inlets of the two compressors 3 are connected to the air outlet of the evaporator 1 through pipes, and the air outlets of the two compressors 3 are connected to the oil separator 203 in the condenser 2 through pipes.

[0062] Two liquid storage components 4 are respectively disposed at the bottom of the evaporator 1 and the condenser 2. A liquid supply pipe 5 is connected between the two liquid storage components 4. The liquid condensed in the condenser 2 passes through the liquid storage component 4 at its bottom and the liquid supply pipe 5 in sequence, and then enters the evaporator 1 through the liquid storage component 4 at the bottom of the evaporator 1.

[0063] By installing an anti-impact plate assembly 103 inside the evaporator cylinder 101 of the evaporator 1, the anti-impact plate assembly 103 blocks the gap between the evaporator tubes and the gap between the evaporator tubes and the evaporator cylinder 101. This ensures that when overheated gas rushes upward in the evaporator 1, it can be blocked by the anti-impact plate assembly 103 in time, preventing liquid-laden gas from entering the subsequent compressor 3 and thus affecting the subsequent heat exchange.

[0064] In this embodiment, the anti-impact plate group 103 includes: a liquid equalization plate 1031, a first anti-impact plate 1032, and a second anti-impact plate 1033.

[0065] A liquid leveling plate 1031 is disposed at the bottom of the evaporation cylinder 101, covering the liquid inlet of the evaporation cylinder 101. The liquid leveling plate 1031 is provided with several through holes. The liquid leveling plate 1031 is located at the center of the bottom of the cylinder. The heat exchange tube assembly 102 includes two sets, which are symmetrically arranged around the center of the evaporation cylinder 101, resulting in a gap between the two heat exchange tube assemblies 102. A second anti-impact plate 1033 is disposed in the rising channel 104 formed by the gap between the two heat exchange tube assemblies 102. The second anti-impact plate 1033 is spaced apart from the lower liquid leveling plate 1031. Several second anti-impact plates 1033 can be provided. In this embodiment, one second anti-impact plate 1033 is provided, which is spaced apart from the lower liquid leveling plate 1031.

[0066] In this embodiment, four first anti-impact plates 1032 are provided, specifically located on the inner wall of the evaporator cylinder 101. Several first anti-impact plates 1032 are spaced apart in the rising channel 104 formed between the heat exchange tube assembly 102 and the evaporator cylinder 101. Since a certain gap needs to be left between the heat exchange tube assembly 102 and the evaporator cylinder 101, two first anti-impact plates 1032 are spaced apart in the channel formed between the heat exchange tube assembly 102 and the evaporator cylinder 101.

[0067] By setting up the liquid equalization plate 1031, the first step of preventing gas and liquid from rushing upward can be achieved. Then, in the heat exchange tube group 102 area, where the gap is relatively large, a first anti-rush plate 1032 and a second anti-rush plate 1033 are set in the rising channel 104 to further avoid direct contact with the heat exchange tube group 102 and the formation of gas and liquid rushing upward. Setting up multiple anti-rush plates can improve the gas-liquid separation effect.

[0068] To further ensure the gas-liquid separation effect, a suction baffle 1034 is also included. The suction baffle 1034 is horizontally placed and located inside the evaporator cylinder 101, and is fixedly connected to the inner wall of the evaporator cylinder 101. The suction baffle 1034 is spaced apart from the outlet of the evaporator 1. By setting the suction baffle 1034 below the outlet of the evaporator 1, the suction baffle 1034 further blocks the subsequent upward rushing gas and liquid. The liquid impacts the surface of the suction baffle 1034 and forms droplets that fall down, while the gas continues to rise and enters the compressor 3 through the gap between the suction baffle and the outlet, thereby achieving gas-liquid separation and preventing liquid from entering the compressor 3.

[0069] To ensure the heat exchange effect of the condenser 2, the condenser tube assembly 202 includes: several condenser tube racks 2021, several condenser tubes 2022, and several liquid guide plates 2023.

[0070] Condensing tube racks 2021 are spaced apart along the length of the condensing cylinder 201. Several condensing tubes 2022 are fixed and inserted through multiple condensing tube racks 2021. Liquid guide plates 2023 are spaced apart vertically between the condensing tubes 2022. The liquid guide plates 2023 are inclined. The lower end of the liquid guide plate 2023 is spaced apart from the condensing cylinder 201 to form a flow channel connecting the bottom of the condensing cylinder 201. By setting the liquid guide plates 2023 below the condensing tubes 2022, the condensate droplets falling on the liquid guide plates 2023 can be guided to the inner wall of the condensing cylinder 201 and slide down into the cylinder, avoiding the formation of a liquid film on the surface of the condensing tubes 2022 that would affect heat exchange.

[0071] In this embodiment, two liquid storage components 4 are provided. The two liquid storage components 4 are respectively provided at the bottom of the evaporation cylinder 101 of the evaporator 1 and the bottom of the condensation cylinder 201 of the condenser 2. The liquid storage component 4 includes: a liquid storage tank 401 and two connecting pipes 402.

[0072] The liquid storage tanks 401 in the two liquid storage components 4 are respectively connected to the bottom of the condenser cylinder 201 or the evaporator cylinder 101, and the two connecting pipes 402 are connected to the side wall of the liquid storage tank 401. The other end of the connecting pipe 402 is connected to the liquid supply pipeline 5. By setting the two connecting pipes 402, the function of diverting and reducing pressure can be achieved.

[0073] Meanwhile, an anti-vortex plate 403 is also provided in the liquid storage tank 401, and the anti-vortex plate 403 is vertically arranged in the liquid storage tank 401.

[0074] Specifically, the liquid supply pipeline 5 includes: an electronic expansion valve 501, a filter tank 502, a two-way ball valve 503, and a pipeline that connects the electronic expansion valve 501, the filter tank 502 and the two-way ball valve 503 in sequence. The two ends of the pipeline are connected to the connecting pipes 402 in the two liquid storage components 4 through flanges.

[0075] Specifically, the electronic expansion valve 501 is connected to the other end of the connecting pipe 402 near the evaporator 1, the filter barrel 502 is connected to the other end of the electronic expansion valve 501, one end of the two-way ball valve 503 is connected to the other end of the filter barrel 502, and the other end is connected to the connecting pipe 402 near the condenser 2.

[0076] like Figure 4 As shown, it also includes an oil return pipe 6 located outside the condenser 2. The oil return pipe 6 is connected to the lowest point inside the oil separator 203. A main oil return assembly 7 is also connected to the oil return pipe 6. The other end of the main oil return assembly 7 is connected to the air inlet end of the compressor 3.

[0077] The oil return pipe 6 is used to temporarily store the oil separated in the oil separator 203, and at the same time, the main oil return assembly 7 is used to extract the oil in the oil return pipe 6 and send it to the compressor 3 for reuse.

[0078] The main return oil assembly 7 includes several pipelines and, in sequence, an angle valve 701, a dryer filter 702, a solenoid valve 703, and a sight glass 704 connected in series with the pipelines.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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. Such 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 utility model.

Claims

1. A water-cooled heat pump engineering unit, characterized in that, include: An evaporator includes an evaporation cylinder, a heat exchange tube assembly, and an anti-impact plate assembly. The heat exchange tube assembly is disposed inside the evaporation cylinder, and the anti-impact plate assembly is disposed parallel to the heat exchange tube assembly. The anti-impact plate assembly is also spaced horizontally in the gaps between the heat exchange tube assemblies and in the gaps between the heat exchange tube assemblies and the evaporation cylinder. A condenser; it includes a condenser cylinder, a condenser tube assembly, and an oil separator, wherein the condenser tube assembly is disposed inside the condenser cylinder, and the oil separator is disposed above the condenser tube assembly inside the condenser cylinder; At least one compressor, the air inlet of which is connected to the air outlet of the evaporator, and the air outlet of which is connected to the oil separator; Two liquid storage components are respectively disposed at the bottom of the evaporator and the condenser, and a liquid supply pipeline is connected between the two liquid storage components.

2. The water-cooled heat pump unit according to claim 1, characterized in that, The anti-impact plate assembly includes: A liquid equalization plate is disposed at the bottom of the evaporation cylinder, covering the liquid inlet of the evaporation cylinder, and the liquid equalization plate is provided with several through holes; A plurality of first anti-impact plates are disposed on the inner wall of the evaporator cylinder, and the plurality of first anti-impact plates are spaced apart in the rising channel formed between the heat exchange tube group and the evaporator cylinder; Several second anti-impact plates are spaced apart in the rising channel formed between the heat exchange tube groups, and are spaced apart from the liquid equalization plate.

3. The water cooled heat pump chiller package of claim 2, wherein, It also includes an air intake baffle, which is located inside the evaporator cylinder and is spaced apart from the evaporator outlet.

4. The water cooled heat pump chiller package of claim 1, wherein, The condenser tube assembly includes: Condenser tube racks are spaced apart along the length of the condenser cylinder; The condenser tube is threaded through and fixed on the condenser tube rack; Several liquid guide plates are arranged at intervals between the condenser tubes. The liquid guide plates are inclined, and a flow channel connecting the bottom of the condenser tube is formed between the lower end of the liquid guide plate and the condenser body.

5. The water cooled heat pump chiller package of claim 1, wherein, The liquid storage component includes: The liquid storage tank is connected to the bottom of the condenser cylinder or evaporator cylinder; Several connecting pipes are connected to the side wall of the liquid storage tank, and the other end of the connecting pipes is connected to the liquid supply pipeline; An anti-vortex plate is vertically installed in the liquid storage tank.

6. The water-cooled heat pump engineering unit according to claim 5, characterized in that, The liquid supply pipeline includes: An electronic expansion valve is connected to the other end of the connecting pipe near the evaporator; The filter bucket is connected to the other end of the electronic expansion valve; A two-way ball valve, one end of which is connected to the other end of the filter barrel, and the other end of which is connected to the connecting pipe near the condenser.

7. The water cooled heat pump chiller package of claim 1, wherein, It also includes an oil return pipe located outside the condenser, which is connected to the lowest point inside the oil separator. The oil return pipe is also connected to a main oil return assembly, the other end of which is connected to the air inlet of the compressor.

8. The water cooled heat pump chiller package of claim 7, wherein, The main return oil assembly includes several pipelines and, in sequence, an angle valve, a dryer filter, a solenoid valve, and a sight glass connected in series with the pipelines.

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